HomeMy WebLinkAbout1.01 Supplemental Application MaterialsIHC-Scott
Revised Floodploin Development
Permit Norrotive for Rifle Pit #1
Avgusl2022
Prepored by
SsGM
I l8 West Sixth Street, Suite 200
Glenwood Springs, CO 8l ó01
970.94s.1004
Revised Floodploin Development Permit Norrotive for Rifle Pit # I August 2022
Revised Floodploin Development
Permit Norrotive for Rifle Pit # I
IHC-ScOTT
Prepored By
ÉMr
Richord (Ch¡p) Fisher, P.E.
QC Reviewed By
Angelo B. Fowler, P.E.
SGM Project 201 9 -341 .002
Revised Floodploin Developmenl Permit Norrotive for Rifle Pit #l August 2022
Toble of Contents
1.0 Project Description....................
2.4 Engineering ond Floodploin Anolysis......
3.0 Proof of Ownership ond Stoiemenl of Auihority
4.0 Anolysis of LUDC Article 3..............
4.1 Seciion 3-30.I.4 Use Resirictions in lhe Floodploin Ovedoy......
4.2 Section 3-301.8 Generol Stondords...............
4.3 Section 3-301,C Specific Stondords.......
4.4 Section 3-30,l.D Floodwoy
4.5
4.6
4.7
4.8
6.1
6.2
ó.3
6.4
Section 3-301
Seclion 3-301
Seclion 3-301
Section 3-301
Seclion
Section
Section
.E Stondords for Areos of Shollow Flooding
.F Properlies Removed from the Floodploin by Fill ..
.G Alterotion of o Wotercourse .........
.H Stondords for Criticol Focilities
5.0 Anolysis of LUDC Article 4
5.1 Section 4-102 Applicobility of Common Review Procedures.........'....'
5.2 Section 4-.l09.C Review Criterio of Development in the IO0-yeor Floodploin
5.f.1 Anolysis of Section 4-109.C..l
5.2..:;. Anolysis of Section 4-1A9.C.2
5.?.3 Anolysis of Section 4-109.C.3
5.2.4 Anolysis of Section 4-109.C.4
5.2.5 Anolysis of Section 4-109.C.5
Ë r"I l.Anolysis of Section 4-109.C.6..
5"';".7 Anolysis of Section 4-109.C.7
5.2.& Ancrlysis of Sectìon 4-,l09.C.8
5.2"V Anolysis of SecÌion 4-109.C.9
5.2.1ï) Anolysis of Seclion 4-1A9.C..l0..............
5.3 Section 4-2U Applicotion Moteriols ...........
5.4 Section 4-2A3.O Floodploin Ancrlysis............
ó.0 Anolysis of LUDC Article 2..
Section 7-203.A Minimum SeÌbsck
7-203.8 Struclures Permitted in Seibock
7-2A3.C Slructures ond Activity Prohibited in Setbock
7-2A3.D Complionce with Stote ond Federol Lows.....
7.0 Engineer's Conioct lnformotion ..
s
Revised Floodploin Development Permit Norrotive for Rifle Pit # I August 2022
Atlochnrent
Attochment
Attochmenl
Atlochment
A.
8..
C.
D.
.......4
Aitochment E...........
B
C
D
.E
s 2
Revised Floodploin Development Permit Norrotive for Rifle Pit #l August 2022
1.0 Project Description
IHC Scott (Scott, the "Applicant") is seeking a Floodplain Development Permit for a
commercial gravel pit (Rifle Gravel Pit #1; "Project") to be located on a 58.7-acre parcel
immediately north of lnterstate 70 between the Towns of Rifle and Silt. The parcel is
located off County Road (CR) 346, accessed from the Mamm Creek l-70 interchange. The
entire projectwoutd be located on one parcel(Parcel lÐ#217908300103), owned by Scott.
The parcel is currently vacant, with no structures or active land management activity. The
parcel has been historically used as irrigated pasture for cattle grazing for several years
and receives irrigation water via a tailwater ditch but has not received intentional irrigation
water application since Scott acquired the parcel in2019. The parcel continues to be used
on an occasional and incidental basis for cattle grazing while Scott develops the plans for
the commercial gravel Pit.
The proposed development would be a wet mining operation where the topsoil and mineral
over.burden would be removed and stockpiled for onsite use or sale as topsoil and clean
fill respectively, and the underlying saturated alluvial gravels would be excavated in a
saturated state. Excavation would be accomplished using a long-reach excavator located
on the upper rim of the excavated pit. No dewatering nor groundwater pumping would
occur with this proposed mining development, and the excavated pit would fill with
groundwater to become a pond as mining progresses through the site.
IHC-Scott retained SGM to prepare a Floodplain Development Permit and this narrative,
along with the listed attachments, addresses all technical and engineering requirements
fromlhe pertinent sections of the Garfield County Land Use Development Code (LUDC).
2.0 Engineering ond Floodploin Anolysis
SGM developed engineering drawings (Attachment A) to quantify the extents and
quantities of disturbance and extracted materials from the Project area..An estimated 100-
yearfloodplain and floodway delineation with base flood elevation (BFE1) were determined
by SGM to address the pertinent sections of the LUDC. The effective FEMA study area
(Panel 08020513608 dated 1211511977) covering the project area shows a Zone A
iloodplain, which is an unstudied approximate floodplain delineation. The 1O0-year flood
eveni of the Colorado River was modeled to determine a base flood elevation and
floodplain delineation. The Floodplain Engineering Report (Attachment B) discusses the
methodology used to determine the base flood elevation in the vicinity of the Project area
as well as the floodplain and floodway delineations. The modeled floodplain and floodway
delineations determined by SGM are clearly defined and labeled in the engineering
drawings (Attachment A).
3.0 Proof of Ownership ond Stotement of Authority
Attachment C contains the statement of authority, title commitment dated 91812020, and
the certification of mineral rights owner research form.
1g1 Base flood elevation (BFE) is the water surface elevation during the 10O-year flood event.
Revised Floodplcin Development Permit Norrotive for Rifle Pit #l Augusi 2022
4.0 Anolysis of LUDC Article 3
4.1 Section 3-301.4 Use Restrictions in the Floodplain Overlay
4.2
Per Table 3-301 in the LUDC, a gravel mine is permitted in the 1O0-year floodplain but not
permitted in the floodway. Sheet 3 of Attachment A shows that the 1O0-year floodplain
covers a portion of the Scott parcel and the Project area. The floodway does not cover
any portion of the parcel.
Section 3-301.8 General Standards
A proposed mobile or prefabricated office/scale-house building is to be placed outside of
the floodplain, within the designated "Operations Area" shown on Sheets 6 & 7 of
Attachment A. As a precaution against the unlikely case of shallow inundation, SGM
recommends that any structures be anchored to reinforced concrete caissons and built
with a lowest finished floor elevation (FFE) of 5385.14', or 1-foot above the BFE, in the
vicinity of the operations pad area.
No permanent structures or hazardous material storage areas will be placed within the
actively mined gravel pit area, the floodplain, or the floodway. No new or replacement
water supply or sanitary sewer systems are proposed to be installed at the gravel pit area.
Drinking water will be delivered to the site.
4.3
4.4
Scott will contract with a vault-and-haul vendor to provide wastewater (and hand-washing
water) services. Scott will have a trailer outfitted with two restrooms for staff. This trailer
will have one 2,000-gallon tank to capture waste from the toilet and handwashing facilities.
A high-level float alarm will also be installed and notify Scott when the tank needs to be
pumped. The handwashing facilities will be designed to receive potable water (treated).
An on-site waste disposal system is not feasible due to the constrained available site area
for gravel mining and operations because of the presence of protected Water of the United
States2 on the parcel.
Section 3-301.C Specific Standards
There are no defined BFE's in the vicinity of the parcel; the effective FEMA panel covering
the project area shows aZone A floodplain, which is an unstudied approximate floodplain
delineation. The 1O0-year flood event of the Colorado River was modeled to determine a
base flood elevation and floodplain delineation.
There are no proposed structures to be constructed or placed inside the modeled
floodplain or floodway.
Section 3-301.D Floodway
This section of the LUDC does not apply as neither the parcel nor the Project is located
within the estimated extents of the floodway, Sheet 3 of Attachment A shows the floodway
delineation is approximately 0.2-miles away from the northern parcel boundary at its
closest approach.
2Õ
2 https://www.epa.qov/wotus/about-waters-united-states
Revised Floodploin Developmenl Permit Norrative for Rifle Pit #l August 2022
4.5
4,6
4.7
4.8
5.0
5.1
5.2
Section 3-301.E Standards for Areas of Shallow Flooding
The parcel is partially covered Special Flood Hazard Area (SFHA), designated as Zone A,
which is an unstudied approximate floodplain boundary. See the analysis in Section 4.2
of this narrative for SGM's recommendation for protection against shallow inundation.
section 3-301.F Properties Removed from the Floodplain by Fill
The proposed berm and other modifications of the site have been modeled to show a no-
rise of the BFE, which is detailed in the Floodplain Engineering Report (Attachment B).
Section 3-301.G Alteration of a Watercourse
This section does not apply, no watercourse shall be changed with the proposed Project.
Section 3-301.H Standards for Gritical Facilities
This section does not apply because the proposed Project does not meet the definition of
a criticalfacility.
Anolysis of LUDC Article 4
Section 4-102 Applicability of Common Review Procedures
SGM has engaged the County staff throughout the permitting process and held a specific
pre-applicatiın conference meeting to address the Land Use Change and Floodplain
Development Permit apPlication.
Mailed notice will be sent to neighbors (see the mailing list in Attachment C) following
submittal of this application to the County'
Section 4-109.C Review Criteria of Development in the 100-year Floodplain
5.2.1 Analysis of Section 4'109'C.1
Danger to life and property from flooding or erosion damage will be mitigated by use of
the perimeter berm. Safe access to the parcel will be provided with improved paving on
appioximalely 3,252linear feet of County Rd 346 and a paved driveway from the county
road to enter the Project site, per CDOT Access Permit #320024 (Attachment D)'
5.2.2 Analysis of Section 4'109.C.2
The perimeter berm will mitigate flooding risk and minimize danger to life and property
damage inside the Project area. The berm shall be constructed at least S-feet high with
2:1 revegetated side-slopes along the parcel's boundary and have a footprint of at least
25-feet iñ width. The top-of-berm elevation is therefore no less than 1-foot above the BFE.
The berm is designed to sustain the hydrodynamic forces and shear stresses exerted by
the 1gg-year flood event and prevent inundation inside the parcel. ln addition, there is no
predicted significant increase in the BFE because of the Project; therefore, no adverse
ilooding impãcts to adjacent properties will result from the proposed development (see
Attachment B).
5.2.3 Analysis of Section 4'109.C.3
The parcet is susceptible to inundation, but that risk will be mitigated with the perimeter
berm (discussed above and detailed in Attachment A). Hydrodynamic parameters in the
3t2
Revised Floodplcin Development Permit Norrotive for Rifle Pit #l August 2022
vicinity of the Project during the 100-year storm event (1O0-year flood) have been modeled
and are summarized in Table 2 in Attachment B. Velocities and shear stresses are
expected to be less than 3 feet per second (fps) and 1 pound per square foot (psf),
respectively. Under those conditions, the hydrodynamic and hydrostatic forces are
considered insufficient to breach or erode the perimeter berm as designed.
Predicted velocities during the 100-year flood will not be sufficient to carry materials from
the parcel to neighboring and/or downstream properties. The perimeter berm is designed
to withstand the hydrodynamic and hydrostatic forces of the 10O-year flood and will further
prevent materialfrom being carried off-site onto other properties.
5.2.4 Analysis of Section 4-109.C.4
The proposed use of the parcel as a gravel mining and extraction site is pending approval
of a Land Use Change application by Garfield County and the adequacy of proposed uses
are addressed in that application. Adjacent properties have similar uses that seem to be
compatible with this development. Future development of adjacent properties with more
restrictive uses is unlikely due to floodplain inundation in the vicinity.
5.2.5 Analysis of Section 4-109.C.5
Access to the parcel from County Road 346 (CR-346) is to be developed according to
CDOT Access Permit #320024, included as Attachment D. The proposed access point
from CR 346 is outslde of the modeled floodplain.
5.2.6 Analysis of Section 4-109.C.6
Neither the existing nor proposed condition of the parcel will have public utilities, paved
streets, bridges, or any other government services that will iequire repair after a flood
event. On-site drinking water will be delivered, and sewerage will be collected in a vault-
and-haul type of system and pumped regularly by a contracted servioe.
5.2.7 Analysis of Section 4-109.C.7
The average water velocity at the site during the 1O0-year flood is expected to be 2.7-fps
with a depth of 3.2-feet and shear stress of 0.6-psf (see Table 2 in Attachment B).
5.2.8 Analysis of Section 4-109.C.8
Does not apply as the Parcel is not a waterfront location
5.2.9 Analysis of Section 4-109.C.9
There is no alternative location for mining and gravel extraction on the Parcel. The
operations pad and scale-house/office are shown to be located-outside of the floodplain.
5.2.10 Analysis of Section 4-109.C.10
The parcel is located within a Residential Medium High (Res MH) area and adjacent to
the Urban Growth Area for Silt, CO, according to the Garfield County 2030 Comprehensive
Plan. The Res MH areas in the county are expected to be developed at a density of
between 1 dwelling unit (du) per 6 acres and 1 du per 2 acres; however, due to the area
around the project site being within the designated 100 -year floodplain (as shown on the
future land use map) it is unlikely to be developed with residential uses. The proposed
development of the parcel does not include any housing or dwelling units as the parcel
will be used for gravel mining and extraction. Pending approval of the Land Use Change
4g
Revised Floodploin Development Permit Norrotive for Rifle Pit # I August 2022
5.3
5.4
ó.0
6.1
application by Garfield County, the proposed development and use of the parcel will be
coherent with the County's zoning designation'
Section 4-201 Application Materials
Scott has developed all required materials of a Floodplain Development Permit submittal
for the proposed Rifle Pit #1 Project as Attachments A'E'
Section 4-203.0 Floodplain Analysis
The extent of the 1O0-year floodplain and floodway are clearly labeled in Attachment A.
The area designated for a potential office/scale-house site, fuel storage, and other
operational appurtenances labeled "Operations Area" is outside of the modeled 1OO-year
floodplain.
Watercourses and natural drainage on the Parcel will be altered by placement of the
perimeter berm to prevent floodwaters from entering the Project area, as well as to prevent
any material or sediment from leaving the site with storm runoff. An engineering report is
included as Attachment B which certifies that the perimeter berm or any other proposed
activity associated with the Project will not raise the BFE.
The changes to drainage on the parcel will not negatively impact neighboring properties
because the perimeter berm will prevent stormwater runoff from leaving the parcel. The
wet-mining process will minimally impact the equilibrium of the water table due to
evaporation and pumping water for dust suppression on-site. The Project will not result in
any direct impacts to wetlands or Waters of the US as proposed (see Attachment A for
extents and quantities of disturbance).
Anolysis of LUDC Article Z
Section 7-203.A Minimum Setback
This code section identifies the datum for the 3S-foot setback to be the Typical and
Ordinary High-Water Mark (TOWHM), which is not readily identifiable for wetland areas,
so the proposed Project was developed assuming the extent of wetlands as being the
setback datum. The wetlands on the Parcel were exhaustively studied and a detailed
wetland boundary was determined by SGM though vegetation surveys and soil studies
and documented in a USACE Aquatic Resource Delineation Report and Boundary
Confirmation Request (Attachment E; note this report has been submitted to the US Army
Corps of Engineers and is currently under review).
Scott is requesting a variance from the 35-foot setback requirement for protection of water
bodies and instead proposes a setback of 25-feet from the extent of wetlands. The
perimeter berm, detailed in Attachment A, will be constructed outside of this 25-foot
boundary and will provide a physical barrier to any wetland disturbance, given that the
proposed berm has an overall width of at least 2S-feet. Any mining activities associated
with the Project will be effectively no less than 50 feet from any wetland areas on the
parcel.
Section 7-203.8 Structures Permitted in Setback
The perimeter berm is a flood control structure that will be placed inside the 35-foot
setback. See Attachment A for detail drawings of the proposed perimeter berm.
5
6.2
s
6.4
Revised Floodploin Development Permit Norrotive for Rifle Pit # I August 2022
6.3 Section 7-203.C Structures and Actlvlty Prohlblted in Setback
No disturbance, other than construction of the perimeter berm (which is a flood control
structure), is proposed within the 35-foot setback.
Section 7-203.D Compliance with State and Federal Laws
The Project was developed to comply with all applicable state and federal laws and avoids
all disturbance and direct impacts to wetland areas and Waters of the US. The US Army
Corps of Engineers has been consulted as part of the planning phase of the Project. A
permit application was submitted to the Colorado Division of Reclamation and Mine Safety
(DRMS) on 04118122.
Evaporation water losses resulting from the exposure of groundwater during gravel mining
will be augmented in a Substitute Water Supply Plan approved by the Colorado Division
of Water Resources (DWR) State Engineer's Office (SEO) and can be provided to the
County at their request.
7.0 Engineer's Contoct Informotion
lf you have any questions regarding the materials submitted with the Floodplain
Development Permit Application for the Rifle Pit #1 project, contact Chip Fisher at (303)
7 46-2549 and chipf(Osqm-inc. com.
Sincerely,M
Richard (Ch
Ê
ip) l-isher, P.E
g 6
Revised Floodploin Development Permit Ncrrotive for Rifle Pit #l August 2022
Attochment A
Engineering Drawings
ø A
nö9¡a3EIı.qI'aoamÔEÈí(o9ıã8Eg Fctr, ıcıs r;tØ9 -'ıt=7-ô .Eggs9óıoÈì-()b) 31oıc¡-Eo)d.c=()-(UocooqoTO=oa:Èh=fLı(EL(J=fLoECo'/er Sheetriil::DE No.ø 131'1 - Cover Sheet2 - Notes & E:rthwork Quontity Estimotes3 - Floodp oin Viciniiy Mop4 - Existing C,:nditions5 - ReclomotÌor Plon6 - N¡inìng Prcaressìon Exhibit - 30%7 - f/ining PrcAression Exhibii - 60%I - Mining Prcgressìon Exhibit - 100%9 - Erosion Control Plon'10 - Erosion Conlrol Detoils'1 1 - Typicol l\,linerol Stroto12 - fypicol Gr¡vel Processirg Loyout13 - Spill Prewntion Contro & ContoinmentSheet lndexuNcc 1-800-922-1987(SPCC) Detoiìxn*rtbÚr,Cal¡*on¡c¡ffiSGM118'uVest Sixth Street, Suite 200Glenwood Springs, CO 81601970.945.1004wwv/.sgm-inc.comRichard (Chip) F sher, P.E. 57906IHC-Scott, lnc. dba Scotl Contracting, lnc.Permit Set (Not For Construction)Chris Hurley tLegal Counsel)Proiect EnqineerAugust 2022Project Contacts9200 East Mineral AveSuite #400Centennid, CO 80112churley@ihG@tt.com (720\ 889-4402troberts@ihGcott.com (303) 790-9100angief@gminc.com (970)384-9027alexn@sgm-inc.com (970)384-9004ch¡pf@slm-inc.com (970)384-9098Chr¡s HurleyTony RobertsAngie Fowler, t.E.Alex NeesR¡chard F¡sher, P.EIHC-Sr:ott, lnc. dba Scott Contract¡ng, lnc.Rifle P¡t Gravel Pat#1Permìtting ond engiñeerinl desígn supporl for o grovel mining Flonwith the following jurìsdielons:* Gorfield CountyLond Use Cl^oñqeFloodploin Development P-.rmit* Colorodo Divisicr of Reclomolion, Vining, SofetyVicirity MapÌ-J.T.Sf¡*¡"lProjectScope of Work112 Permil (Hord-ock M¡n ô9):l-70;ç-,II
rb:Notes & Earthwor*Quantity Estimatesd: 132+L=Èı(EL(,EfLodd(Ec-o-Þ c;;o.==()-oocooqro(J=TO(Í)EEeOH?a8EOËËEooË+rFoË;=qË=brÈEARTHWORK OUANTMY ESTIMATE TABLEPROPERTY AREAPERYTTTED ÁREAAFFEC'TED I.AI{DS(ÀK"A. UMm OF DTSruRBED ÂREA)OVERBURDEN REMOVALæ.7O (2,557,171)19,6J (8ns,209) |1s.æ (827,a22) |13.17 (573,862) |63,i62 (cur, sorl)I pRopERN BOUNDÄRI SURI/EÍED El SCM, NOTED tN A SURIEY M P flAlED 12/13/2019. SEE SHEET ¡+ FOR AN Ð(SnNG CoNDmONS MAP.I BouNtMRt coNTANtNG Att AFfECTED l¡t{Ds Ar{D A}l tsotATED 0.65 ACRE (27,5E6 Ð vlEIl¡ND AREA r}iAT ut! Nor BE AFFECIED.I AtrowAEtE AREA FOR DlsruRB NCE AND l¡tNrNc RÊLATED ACÌMT|ES (ALSO SHOH{ ^S ìl) " lN PLANS). SEE SHEEI 5,I AVERAGE DEPTH OF CUT ÀSSUMED AT 3 Ft. GEOÍECHNTCAL ENGìNEER'S BORTNGS SHOW OVERBURDEN DEPTH VARIES 1 - 5 FT ACROSS SITEAND APPROXIMATELY 0.5 FT OF THE OVERBURDEN COMPRISED OF TOPSOIL. MUCH OF THIS AREA WLL BE MINED BUT THE WEILAND SLOPEAREA WILL BE RECLA]MED PER GARFIELD COUNTY LUDC 7-1O02.H.2.I BERMS TO PROVIDE NOTSE AND VISUAL BARR|ER. SEE DETATL A/6 0N SHEET 6- Tllls wLL BE RECLAIMED AS AN UPLANDS AREÁ.I ScALE HOUSE, FUEL SIORAGE, PARKING, AND OFFICE. CONSTRUCTED AS 1 FT OF CDOÍ CLASS 6 ROAD BASE INMAX.6" LIFTS AND COMPACTED TO 952 PROCTOR DENSITY.BERMSOPERATIONS AREAGRAVEL ÐfiRACIION AREA(fooz coMPLm)_ 3OZ COMPLETE_ 602 COMPLETEROAD BASE FOR IIORKING AREASTVÍI{IN AFFECIED TANOS3.e0 (16e,67s) |1.s3 (E4,2E2) |3.72 (161,8s4) |7.+3 (323,7oa) |1s.11 (6s8,144) |(FrLL, SOrL)(F|LL, cL 6)1 4,5553,03712.J9 (539,514) | 292,810 (CtT, CRAVII) | GRAVEL ÐOR CIION AREA Y{fT}llN lllE ÆFECIED IANDS, ASSUMING A 5¡1 SLOPE rcR ESnM TON oF GRAVE- QIANTmES.a7,a43 (CUT, GRAVEL)175,686 (ctÍ, GRAVEL)I MINED AREA AND VOLUME, ESÎMATE AT 3OZ COMPLTTE. SÊE SHEEI 6.I MINED AREA AND VOLUME, ESIIMA'TE AT 60% COMPLÉTE. SEE SHEEI 7.UPLAND RECLATIAIION AREAJ.eo (1se,67e) |TVEII¡ND RECLA¡IAÎON ARFAo.7e (34,548) |RECIAMED PoND sURFÂcE AREA 12.s6 (s,l7,oJ,+) I N/ARECTAI'AION AND REVEGEÍATION:i. Átr REctÁÀrATtoN slt ¡.r pRocEED AccoRDrNc ro cARFtEtD couNTy LUDC sEcloN 7-1002,H 'cRAvEL MINEÐíRAcTroN - REct t¡AroN.'2. SEED|NG SHOULD OCCUR tN I rE-F tL TO pREVEìfr SEEDS FROM GER)¡|NA'IING rN SUMMER/E RLY-F Lr Al{DOESilCCåÎNq AS WEI.T AS TO PREVENI SEEDS FROM FREEZING IN WNTER.5. DRIL! SEEDING UI.T BE TMUZEDÌIIROUGHOT'T ITIE PRO'ECT UFEnME, Ð(CEPT WHERE HAND-PLACEIIENr ISNECESSART (E.c. COI{TANERTZED Wm¡ND SÍOCK). BRO DC¡SÎ SEEDTNG (OR HYDROSEEDTNG) VilLL BE USED ONLYAS NECESSARI FOR SPOT COVERAGE IF DRITI-SEEDING IS IMPRACNCâL IN ISOLAÎÊD ARE¡S.,+. SEEDING SHOUI"D BE APPUED lN CONCERI WITH A STERIUZED IM)ROMULCH TO STABIUZE soll SURFåCES UñnLGERMINATION COIT},IENCES WHIlr REDUCING VÚEED ESTAAUSHMENT.5. SEEDING MAÎERIAL AI{O APPUC,A'ÍION RÀIES TO BE USED FOR RECtAilAflON SHâII BE AS USTED IN TABTTS 1 AI{D2 FOR DRIII SEEDING. APPUCAIION RITTES SIIOUI.O BE IþUBI.TD FOR BROADCASÍ OR HþROSEEDING SEEDINC.TABLE 1 - UPLAND SEEDING AND PTANTING MIXr couMoN N^r¡E sctEñîFrc Ì{AvE v RlErY FoRv Pts (lBs/rcRElt20 oRc¡uñ) GR ss uctrus GLorER l ¡s toca.rY ^vAual'! ilrNctl 5.620 tE¡lBll ffiEATCRTSS PIS@PYRi l SIllHl Æ þC¡lrY AV ltÂBtE Soo-FoBrlre 3.0æ nffi PHLIUT¡ PRÆEIEE rS þCA|LY AVAIjAT &Xs t.8,lO IE DOr nflE majft gÐCnsfElNll Æ rcC{rY AVAIÂ8|,E qJxH 7.2TABLE 2 - WEÍLAND SEEDING AND PLANTING MIX: COMUON }.¡A¡¡E SCIEMNNC NA¡'E VARIEIY FORT¡ PtS IT-BS,/ÁCRÐT-- sFE Rtr F UæmRJSH m GI¡tlER T rlDUilD æUECIÊD SEEo 9{ru8 O.05-- cñoTE ulr.ou sAlrt Et¡qj coxl t{EFúzED sfoo( (s $P) sruB I @NrAilERPm 5 Sa.FL-- gALltC RUSI| JUrCl¡S B LÌETF rS þC¡I.LY AVAtÂ4r SOo-FoñI|XC 0.8-- ilERÆH SECE C¡RE( ilE*ASCE{SF rS þCAILY AVAtÁ8tE $D-FmÎ{G t.8-- B€t(E s&E ffi ulrout^ æFANm íæx (10 N) RHzosrcE 1 traNBm5sQ.Í.-- cusERED nE¡ SC06E CåREX FR|EGR CTS rS LOC|I.LY AVAUALE $rFOñr¡l{G l2-- c¡r Fu¡cPs ilRs sEM)pL€cnE ârERrcsG wmÊtr¿ED sÎo(t( (€o Ì¡) Rfltrmrus I col{fANERm5so.FL6,ff),1(Ftu- CDOI CL 6) | TOTAL Ai¡orJNT OF RO D BASE (MtN. 3' IHICK) REQUIRED TO ESÌABUSH WORKING St RF^CE FOLIOwING OVERBURDEN REI¡OVÁL lN THEAFFECTED I¡}¡DS. QUA¡MTY ESNMAIEÍ) FROI¡ REQUIRED AREA FOR OPERAIIONS AREA PLUS WERBURDEN REMOr'AL AREÀ2,J9O (nU, TOPSO|L) | Upt-áND D|SruRBANCE (pER GARFTET-D COUNTY LUDC 7-',tæ2.H.2) REVEGETAIED nTrH UPLAND SEED AND PLAI{TING MIX (IA8|E 1).6J7 (nl'I, TOPSOTL)I poND WEILAND SLOPE RECWMED Wfn 0.5 FT OF TOPSO|L GENERATED FROM O/ERBURDB'I REI,O/ L fflHlN AFFECIEÐ t-Al{D(p¡R o¡nner-o couNTY LUDC 7-1æ2.H.2, At{D REVEGETA'ÍED WfÌH WEIIAND SEED AND PLA'IING MIX oÄBLr 2).I POND WA1ER SURFACE,ÄREA AFTER COMPI,EITON AI.ID RECI.A¡'ÀTION OF GRAVEL MINE IN ÆTECTED AREÀEROSION CONTROL NOTES:1. IIIE RNT PIT LOCATON IVII.I IIAVE A STORI¡YIA1ER PERMIT I1IAT IVILL BE IMPITMENTTD DURING MINING IHC-SCOTTCO¡¡IRACNNG ìIII.L FOIIøI ALL REOUIRED PERTIIT GUIDEUNES AND REGUI.ATIONS.1.1. WEÊKLY AllD MOi{THLY lNsPÊgllONS ill.r BE ooNDUCIED PER PERlrlT REQUIREMENÍS; INSPECIION DocuMÐ{lA'llONIUIT ALWA.TS BE UA¡NTAINED AND AVAII.^AI.E AT THE ON-SIE SC¡TT HOUSE.z. E¡RrltEt{ BERMS ARoUND 'rHE pRopÊRty, ^s |DENnF|ED oN 'mE puNs, ÌvtLL BE BU|LT PER oErAL V6 oN sHEEr 8,COMPASTED IN PI.ACE, AND REVÉGEÌATED IS IHEY ARE CONSIRUSIED.2.f. .fHE BERMS WI.I gE SEEDED AFIER CONSIRUCTION ACCORDING 'fO IHE UPTAND PI.AI{TING AI{D SEED MIX OABLE 1).2.2. 'IHE BERI¡S TÍl.r AISO CONTAIN ÆI SÎORM RUNOFF WTIHIN ACTMÊ IIINING ARE¡S.3. RJEL STORED ON-SllE w[r BE CONTA¡NED lN A DOUBI.E-IYAI TANI( lN ACCORDAI.¡CE WIH SrAIE REQUIRETTENTS. 1HESESTANÍIARDS Wl'I ÍEEf THOSE IN IHE SÍTE_SPECIRC SPCC Pt¡¡{ TO BE DEVELOPÐ A¡{D STA¡PED BI A UCENSEDPROFESSIOML tr¡GINEER.5.1. 'IIIE TAI{KS AÌ{D STORAGE AREA Y{ILL BE INSPECTED Y{EEKLY Æ.ID OSSER/ATIONS LOGGED IN ACCORDANCE V'ITH STA'IEREGUtAfIONS.3.2. SEE DErAlL K/¡3 ON SHEEI lJ FOR A ryprc¡L DEf rL OF A SPIII PREVET{Í|ON At{D COiIrAillNAltON CONIROL (SPCC)CONCRETE PAD.ESNMATED CONSTRUCTION SCHEDULEJVL'í 2022 - ST RT OF Sm PREP (tDA STAlfiC, OÆRBURDEN REMOTAI- At{D BERM CONSIRUCTION).AIJGUST 2022 - SÍART OF MINING OPERATONS AT{D CONCURRT}II RECI.AI'AT|ON ÁS MINING PROGRESSES.DECEMBER 2025 10 2027 - END OF MININC OPERATIONS I} RECLAMATION (UTE OF MINE ESTIITAIED A1 3-5 \CARS).
P¡ðTèd:I l:24 dPaôld Mlþslôná: P.misrtÑdrotsñ¡hM)RPTRPFl+/t./2tPcilr'il 3èlESGM118 Wesl Sixth Street,Gl€nwood Springs, CO970.945.'t004www.sgm-inc.comSuite 20081601IHC-Scott, lnc. dbaScott Contractlng, lnc.Rifle Pit Gravel Pit #1I,ñ3ı"å-å<Fo='ı-gG)fzIoU¡Tr¡C)l'lQn> o(nz-Eorc)znFzoH n",;f¡ffibaa-ázmÞú)-<B=8-l ÈvQzc6=Br={_, Ø c)ì'.(À1þiiic)nnnxwIrcçã5-.-omÇ-lfqrrT=-rY6\!Iir.iGostoôEJı'U)ooı-
i lr28 NPrcjd MlEtone Pôñt h (N6t Fór 6mMon)R€vlslon B2mx.-'@oo-4o:cIÞIHC-Scott, lnc. dbaScott Contracting, lnc.Rifle Pit Gravel Pit #1-¡ESGM118 West Sixth Street, Suite 200Glenwood Springs, CO 81601www.sgm-inc.com970.94s.1004__lt,i,l¿.1z:::ì\'../-.'.' ..'.:--¡=0cII:IoA=Içzov?i/ ìIi;l.,"1'. --.i.--'òi ).. ld^:./.'.i "..--- V / ,:, jY 7\.¿/i,tou)zoz-z?z:!o=qç2f.)'\ri-zzI- -l-'-\lË[{ 3ì-îÈı.-zz<! '-.lrt.-.-^..fi!i¡=IçzxnôIoj-=flr... ãã1oI@oczÃi--.. -:, II ''ì'.ì,ooa!tzo92bç!ilt9trlzs.oci'?. -1---..i '. -,. II¡€tz@cxéçzoczIIlþo./:'.ì.:l'lI/C\Q.=lEãQ¡aBIPzur€E9olôdö>h4=9ñ;¡co€z=zcØTileCooñÞJ<t,ooı-
I l:29 ^MÞbJd Mll€slûnÊ: Þ.mh $r (Ñd Fden.hdø'ESGM1'18 West Sixth Street,Glenwood Springs, CO970.945.1004www.sgminc.comSuite 200B1 601IHC-Scott, lnc. dbaScott Gontracting, lnc.Rifle Pit Gravel Pit #1noa.0fDÉof1tñ.Yz3(JtoèilJ:H-o¡Ëe-z6È*f¡Sdt1:ñt=ãf;ä ã':f,tbr Èl"- ln¡* iEE.rEirHbEFÈçÞn-'.\I ì-| .-..Ì-,, ,,.. ::j'1IIt--t-!\. \'jÌç=:ts¿2-çÉYtrø"ãl;Q>^Y^q{E Þ-Q øçotrHÄts{z Lt¿ot-:o ¿19o-. :,..,:- .. .' ,;frN:oø <r <mià ã1, 6ã=Ø nf n='À z zmi oÕ oÔ9. -d,'3= ôú aÈ¡ -- frø; =ë Ëöô >^ u^EçV:I¿_ãið2 eã 2'aàÉxFxç i,m2ê? ?oryiz Uz Za >=3È*r trra4 +';l 'I::iriu,,Il?9lotrio-r1AäËIMı2i€t,¡LIcþtilaØooı-
Prcjd Mlþsloñe: P€mlt$l{NdFde.dhcúo)Pemit Sètt4/11/2213o);zgm=4dd!-ıgsı'={IHC-Scott, lnc. dbaScott Contracting, lnc.Rifle Pit Gravel Pit #1ESGM118 West Sixth Street, Suite 200Glenwood Springs, CO 81601970.945.1004www.sgm-inc.comcrooonc@oksUNitÈHTÉE*8H-=ççB;R!È6édsE¿ZÊÊ¿iVmpz ñ r< I^ ox à a4 xöÐ$s:ãË*!si:ÉEEz1-=Ë-É-frci \,_ ø zoe=âreEmÉ*Êäiã =:6 sãj =i ç ÌlEãSA Z_ıhçp 9- N! ¡ ¿X o'- !Ø zo t¿ oz9ð"' ;- ñ! a! io ô IÈ rr ñ Ê->ø>-- ıg 6-nñh3;o ¡l1n¡so¿óÍ"!r<iooa{=ãJOH3ZøôdHØ3Éd-0@ZatBofzniñr"f22'ziIzØf5qPç''zAç5FTn Olo^ño\¡Y.-Eàø ı'2E -Pea t2ã< vØcı +-ëz. ñ'4> á22I ooÉ:Ël8e^> Ô1f9)->=Ez<'ãtlo>Ieèqcfn;<>a*9.=n9^g'r>ı-i8SËZuaãae<r+=r==3ÞFÈ+,¿{lRëtr txg-qñd ÕEãE=ıEI<ç=02Éô)@Ø> aZË6pHr¡Þþ-.m<'-ñs ñT=g!ıtrriiNOÉ>a(zJlnlfz:t!z!zIoz12É-ıri=x¡EP.Ø>.ozEçâøz=i2"4,U'f¡It-{ızt¡tIutzìÃ0Ø.¿bqPç4gzÉ2<>!zoãqE2ñ.,0lc)2+ô!I-ð@nH.øOPÈ>Ð@<ËãðqçHt ',I9=do!<AAã.ã4..llI___ __ __ i rlì1.\Il.'ql.!tiiio..ail2Çéa.=q!q=q7oAT4ñz-J1. : ',rztz=zzizPÃØz:oo€:I<Fz¿1Þã¡:xñaa'a';Ì.iÌ..ù.ç;ozoilii,c¡:Io:o6)ı!=ı'(t)ÕoôcØTi.ilee:l.iÉ:'ol<!oCJrñÃ=sñbÐocño
1 1:29 dProlel MlþslurE; p.mûet(ñd I órhlhcrônlrlìlÊrlrlElt/11 /21R¡vi¡íon B2Rev¡¡ionlÍildt l¡t_t_IESGM118 West Sixth Streot, Su¡te 200Glcnwood Spr¡ngs, CO 81601970.945.1 004www.sûmlnc.cofn{IHC-Scott, lnc. dbaScott Contracting, lnc.Rifle Pit Gravel Pit #1nml,+3g_u:.d8iıf?/Ef,¡tjN:ÞÈ<i Ø 4= I Ã6 bôr r l; ; xr IÉ- ñ m l I !â hE3;=EEËÃB.4ì166ñoE!iPãrs;iø-ù=øEH.-E6 4 F r- Ide=tstl-=Þ!Ëi=i:ËlË2ø 4 -'i , {e Þxã x3: tiTE!Ètróm^''Y:e=ÊreEHÊ s +E *:*ã9- O Or t ùnç1É=!ÈeË:9lz;tïl;ãããEñ zi=âÃip +HS - N! ¡ >ito o F ¡ =+¡398ñ -dî=*nt I+ıEr3; -9¿t-Fñ*iË> z8 ào, j 3 ri EqQ <i> B YClÐ4\T-88*=Jî2a=zTzq.zoloTçFz=ÞoÈIØ<ı=1I>l¡." F20ÞtØ<odT)(mx'tt2Iz6'9utrqmrô¿23oÐlrroC)Erq('nFIz3r<F=2âØmc)Iozr¡I14zIz!Ðoz= ul1;^¡.o-ıñØPËäûzY4>i¿>oz¡íF@oãoÉiçza---" . i'ÌIIìì>=trz<'==u^> I*o=q-@<¡ Qç;P ËFro-t<>çãQgg.'ì1i./aIp-Tii\*l¿ezÐazaA¡Ë¡hP-c$89trU1_aı:zrfrôEÉE>¡ôØ24i{I:/\-IIooqíì' {Pì:ı*>nxz,-HÊ30ã'E9eåùó@aËh¡â<Ôz=Åg>z10.uI>r'.':..{i.'ioo!=ı'(,oo_oc!t)IÍôçÉ8<2c |rIoc:oIT-2o8i-4zi\æ=ØzÍ-òtcÐúm=iÕ1ZF
1 1:29 ilSSGM118 West Sixth Street, Suite 200Glenwood Springs, CO 81601970.945.1004www.sgm-inc.comIHC-Scott, lnc. dbaScott Contracting, lnc.Rifle Pit Gravel Pit #1PóJd Mlblon€: Pôdnw(NdForøn3hdonl=f.J@1'ı@ı9,.Imx=.qoos@RPF/11/2t1^aðq- -z*ñø9oE-o!-<r¡P>k¡ gN:'EEsrããPPr rl t !2 ß¡3ıåådËeãrrlE=sr¡ËP= r> > ¡ Fã o¡ ¡ = x"'rm<Es2à"FÞ.i 4., a n Í3pi"ËE-ÐF<!Ëà16=ñH'Eó-.oe=ÊrË^ ,"1 I "ö r< ı =99s9F'd z¿ o -' r= = n9ã9çoãËÎçe3r p1 i Bfi:EËsz9d¿tFËü.=! -9 0 GI ¡r N a->,.:- "9BIIE€t,=fVARIES17-22 Ff5ont, , _'_ -,-_-;12qIo@c.;, I@tt,t¡c):JozalI-to>oEo5åıñzÉIÃ@zJIi.-",.,,--.1'i." " 'lIaITI'ì Ïè-ô_|1rlicøIoÍNx=rz<'=iYåqro-<ìÞ!gtII\",è,iÌ:ì,i:., :'\q-ÃoeF0l<!o.. hE\ Pd\..^cIIIl\zIz.E5zoÍ¿¡-qI:Jñ6,ıEJ.oØÕoo-
1tr t:29 AMl9-3+ I -Rfl¿PúÞ¡oject Mileslone vsmi sl (Nol ror &ñshdMlSSGM1'18 Wast Sixth Street,Glenwood Springs, CO970.945.1004www.sgmlnc.comSuite 20081601IHC-Scott, lnc. dbaScott Contracting, lnc.Rifle Pit Gravel Pit #1mdgoolãllÐfd?(o3i*==ì-!!¡.!!ibi!¡ e t =l!k^Ëffã :tr Zà Z3 12>=¡ oØ ¡f æ= lçà -., --ñ >o >o lzueÇ il én én lãBËË 8- =f .Ë lPã9ìÁ 9¿ ïñ rñ lpznÉ' .)'- T -F lz¿:gtr -fJ Þs t-i;E ¡c çs:q lfiãsã Fç ãå ä5=- øà >+ r"ìYr È irrO t ìØ Øvö qsð ð+= òn? ,ñ<Èè==zQ>o bNT -¡ Tñ -tq'\lz_o!ã/\=' ,¿iI -zü ¡,:-J!ir:9nzj_ -oN) -I"tl.lt"I4{{ì.z'o!jr!¿ü!t11d"{E=,ÃtgJi'Itt).+=ãP=o' 9uiþã¡aÀ 2oaøa ı6e=otE esÉ- ìo-;ã=eIñ¡¡, j'g€=ìì.JÀãN-!!N:r!ÃtFZzIfámz'oHI=tl.G_oi,,{Pz_@1otj\-::::-.cøI
l1:29 ilPójd Miþ3bn6: Pôdn s {Ñd Fot tuhdonlIIIR€vlslon B2Rêv¡sloû¿1mıt2.oãooÞoıooFo3c{IHC-Scott, lnc. dbaScott Contracting, lnc.Rifle Pit Gravel Pit #lESGMI 18 West Si)dh Street, Suite 200Glenwood Springs, CO 81601970.945.1004www.sgm-inc.comNoIET!vhIooozioc-ø50¡F=toøI-l¡leac73C)Itl^occ)Ir¡=z6,o2a¡,-t^å-IrztIz:{Ø
Plott.d:I 1:2ePþld MIBþnôl Pffi [ h ßor F4tuu@lSSGM118 West Sixth Stroot. Su¡to 200Glenwood SpdnEs, CO 81601970.945.1004www.sgm-lnc.00mIHC-Scott, lnc. dbaScott Contracting, lnc.Rifle Pit Gravel Pit #1-{E!t==qo<tIo-s#7VARIES17'-22'VARIES1'-7'-0.5'z3!û3,Pü=sËã3ðc)ç|t)--loz.nt+t/,IØ-lozrn@monoc)XVARIES1.5'-5Éfrmf¡tr--1o-o(tor?y<OmrFz.r^¡\1>=iT>Ð<Or(nzor(n
I 1:30 AMt9-341P¡Õjêcl Mileslone: Pém I ser (NolFÕrcoôshdÙonl1IN)1tð+oıI-ıg.ò@ot-ıësogcIHC-Scott, lnc. dbaScott Contracting, lnc.Rifle Pit Gravel Pit #1ffiSGM118 West S¡xth Street, Su¡te 200Glenwood Springs, CO 81601970.945.1004www.sgm-inc.com(!i:,ìrjtl:.t''- tçf! .:l.'&,"!-irla:;tt,t224I:t-- 11a'a' ì.',nl.'l¡,")1!c)t-c,7¿mt-Itnoc,m(naz6)çoc-{(zJZZîr\.ltt>T> c)>zoz r -u(,¡O C -U-l Ø) 7l^(na T ôi()t,t = xri r-. >9-^ !1 09åc" \o;E¡ Ëå>,rm X L )Jı¡i¡i ıttz-anú oz'-a nl_!-l mr!== qE#tr Q ¡Õ- -LOm u)Ã1.10',,aIItt¿ILlr,-1tt4*Ifiü?-t,I¡T
Ëa.?€tË==E!EEgOggaãEtsËËo<¿o'îEoø,ììIÊoo(joìotsooOE-o-Þ ci;d.c_rEocooq?t¡()ËTO=()Ø+h=fLı(ELo=fLq)ESrill Prevenlion Conlrol&Contãinmem (SPCC)Detaíl13I:13]€ No.PLAN VIEW2,000 GALSTEEL DOUBLE WALLFUEL STORAGE TANK4.00'12,000 GALSTEEL DOUBLE WALLFUEL STORAGE TANKSKIDSKIDsEcïoN ttEwl,lOTE: SEE THE SITE-SPECIFIC SPCC FOR MOREDEIAII..ED INR)RMAT|ON ^ND M'RRATI¡E.aò sflLL pREvENnoN coNFroL & coNTATNMENT (spcc) DErALitSKID_MOUNTEDSTEEL DOUBLE WALLFUEL STORAGE TANKCAPACITY = 2,000 GAL\v¡r.T.s.
Revised Floodploin Development Permit Norrotive for Rifle Pit # I August 2022
AÌToch ment B
Floodplain Engineering RePort
Bs
IHC-Scott
Floodploin Engineering Report
Moy 2022
Prepored by
SSGM
1 l8 West Síxth Street, Suite 200
Glenwood Springs, CO 8ló0,l
970.945.10A4
Floodploin Engineering Report Moy 2022
Floodploin Engineering Report
IHC-SCOTT
Prepored By
Ê{.
Richord (Chip) Fisher, P.E.
QC Reviewed By
Angelo B. Fowler, P.E.
SGM Project 201 9 -341 .OO2
,'. {/
Floodplcin Engineering Report Mcly 2022
Toble of Contents
1.0 ProjectDescrìption...............
2.4 HEC-RAS Model lnputs
2.1 Flow qnd Boundory Conditions..,....
2.2 Existing Condilions Geometry
2.3 ProposedCondiiionsGeometry.......
3.0 HEC-RAS Model Results
4.4 HEC-RAS FloodwcyEncroochment...........
5.0 No-Rise Certificotion
ó.0 Engineer's Contoct lnformotion .
Appendix 4 ..............
1
1
1
1
I
4
5
'7
7
A
s
Floodploin Engineering RePort Mcy 2022
1 .0 Project Description
IHC Scott, lnc. (dba IHC Scott Contracting, lnc.) (Scott), a construction and gravel
mining firm based in Centennial, CO, purchased a 58.7-acre parcel (Property) located in
unincırporated Rifl e, CO (Garfield County Parcel No. 2 1 7-908-300-1 03). The ¡r_oposed
Rifle Pit #1 is just north of lnterstate 70 (l-70), roughly 1-mile northeast of the Rifle
Airport. Scott ietained SGM to prepare a Floodplain Development Permit application for
the proposed 19.63-acre gravel mining project known as Rifle PA #1. Development of the
site will entail mining of sand and gravel. There are no residential construction activities
planned for the site. An estimated 10O-year floodplain delineation, base flood elevation,
and floodway delineation were determined by SGM to quantify flood impacts of the Rifle
Pit #1 project on neighboring properties. The effective FEMA study area (Panel
0g02051COOB Oated 1211511977) covering the project area shows a Zone A floodplain,
which is an unstudied approximate floodplain delineation. The 1O0-year flood event of
the Colorado River was modeled to determine a base flood elevation and floodplain
delineation. This narrative summarizes the results of the HEC'RAS model developed to
predict the extents of the 10O-year floodplain and any impacts to the base flood (BFE)
resulting from the proposed Rifle Pit #1 project.
2.0 HEC-RAS Model lnPuts
2.1 Flow and Boundary Conditions
The CWCB analyzed hydrology of the Colorado River Basin and determined that the
1gg-year (1%) flow in the vicinity of the Rifle Pit #1 project area is projected to be
34,900 c/s (cubic feet per second) which was used as the steady-state flow in both
existing and proposed conditions of the model. The boundary condition for both existing
and próposed conditions was set to a Normal Depth at the downstream cross-section
(River Station 175063.0) with a slope (s) of 0.225o/o, ãs determined from L|DAR
elevations.
2.2 Existing Conditions Geometry
Existing conditions were derived from Garfield County LiDAR topography. The HEG-
RRS eiist¡ng condition geometry (i.e., cross'sections, riverbank locations, ineffective
flow areas, ánd river thalweg) is shown in Figure 1. An existing gravel pit, just west of the
Rifle Pit #1 project area, was modeled as an obstruction after analyzing aerial imagery
that shows the pit does not fill with water.
2.3 Proposed Gonditions Geometry
Proposed conditions were developed in AutoCAD to reflect the mining operation phase
of the project and inserted in the L|DAR surface to create a hybrid surface. The HEC-
RAS proposed condition geometry is shown in Figure 2.The Rifle Pit #1 project was
modeled as an obstruction within the perimeter berm to prevent flow from entering the pit
and erroneously decreasing the WSE in the model. The engineering drawings dated
April 14, 2022, show a mining plan that covers much less area inside the Property than
the proposed conditions surface used in the HEC-RAS model. As such, the HEC-RAS
model results are more conservative (i.e., showing more disturbance inside the
floodplain) and are valid for the current mining plan.
s 1
Floodplcin Eng''reering Reportf,Aoy* 2422Figure 1. Map showing LIDAR topography of the Existing Condition and the model cross secflons (light green lines), river thalweg (blue line), and the leftand right banks of the Colorado River (red dots).2sþ70
Floodploin Engineering ReportMoy 2022Figure 2. Map shawing hybrid AuIoCAD/L¡DAR topography of the Proposed Condition and the model cross secfions (light green lines), river thalweg (blueline) and the left and right banks of the river (red dots).g3
Floodploin Engineering Reporl M<:y 2A22
3.0 HEC-RAS Model Results
A hydraulic modelwas developed using HEC-RAS to simulate flooding effects during the
1O0-year flood event both before and after the proposed mining operation. Hydraulic
stresses were analyzed to determine appropriate erosion control and structural
characteristics of the earthen berm to withstand flood conditions. The difference between
[te existing and proposed water surface elevatlons (WSE) was computed as the rlse, ln
units of feet. A summary of the HEC-RAS model results provided in Table 1.
Table 1. Summary of HEC-RAS model results of the existing and proposed water surface elevations (WSE)
and the computed rise (í.e., difference between exrsfing and proposed WSE) at each model cross-secfion,
denoted by its station along the river thalweg.
ln the proposed condition geometry (Error! Reference saurce not found.), cross-secfrbns 22688.22 and
073A.67 intersect the proposed Rifle Pit #1 (earthen berm and mining pit). Velocity, hydraulic depth, and
shear sfress were computed at these cross secfions as well as the nearest upstream and downstrealn cross
secfions.
Table 2 below summarizes the model results of the cross-sections that closely capture the
proposed Rifle Pit #1 topography. Appendix A provides more detailed model results for
each cross-section.
Table 2. HEC-RAS model results of velocity. hydraulic depth, and shear sfress of the left-over bank regions
in the model cross-secfions nearesf the proposed Rifle Pit #1 project area.
4s
River Cross-Sectlon
ffr)
Exlstlng WSE
(fÐ
Proposed WSE
tfÐ
Rlse
(fr)
30902.14 5412.3 0.05412.3
29650.64 5409.4 5409.4 0.0
29s00 Bridoe Bridqe N/A
29427.62 5406.2 s406.2 0.0
27494.84 5400.4 5400.4 0.0
26255.61 5397.1 5397.1 0.0
25219.46 5393. r 5393.r 0.0
24r0r.0r 5389.9 s389.9 0.0
22688.22 5385.4 5385.4 0.0
20730.67 5379.1 5379.i 0.0
r 9398.23 5325.5 5325.5 0.0
17708.26 53/r.8 537i.8 0.0
rs834.35 s3ó5.ó 53ó5.ó 0.0
r 39r 5.69 5359.ó 5359.ó 0.0
of Wsler Surfoce Elevqlion Rise
River Cross-Seclion
(n)
Velocily
(ftls)
Hydroulic Depth
(fr)
Sheqr Slress
(fr)
24r0t.01 2.0 2.8 o.4
22688.22+2.8 2.6 o.7
20730.67'r 2.7 3.2 0.ó
r 9398.23 2.4 3.5 0.5
Veloc , Hydroulic , qnd Sheor Stress
I Cross-sections intersecting the proposed Rifle Pit #1 project area.
Floodploin Engineering Report May 2022
4.0 HEC-RAS Floodwoy Encroochment
SGM used the same HEC-RAS modelto implement an encroachment analysis, where
the effective flow area in the model has been incrementally decreased until the predicted
water surface elevations at each modeled cross-section increased by 0.5 feet (known as
the predicted surcharge), as described in Rule 8 of 2 CCR 408-1.
An encroachment analysis was used to estimate the floodway, using an iterative process
of decreasing the effective flow area at each modeled cross-section by starting
downstream at River Station 13915.69 and moving upstream. Some cross-sections
showed no change in water surface elevation (WSE), so the floodway delineation is
approximated as the stream bank at those cross-sections. Left and Right Offsets for the
floodway delineations are summarized below in Error! Reference source notfound. and o
verlaid with the model geometry and topography in Figure 3.
TabÌe 3. Summary of teft and right offset sfaflons for the floodway encroachment at each model cross-
section, as well as the predicted surcharge (feet), or the artificial rise in WSE due to encroachment of the
banks toward the river thalweg.
Righl Bqnk
Slqlion
(fi)
Right Floodwoy
Slolion
(fr)
Predicted
Surchorge
(fi)
RÍver Cross-
Seclion
tft)
lett Floodwoy
Slolion
(fr)
Lett Bonk
Slqtion
(fi)
2317.12 2421.92 0.501597.59 1956.9530902.14
808.4r 0.0033ó.82 798.4029650.64 326.82
Bridoe Bridoe Bridqe 0.0029500Bridoe
982.50 992.50 0.503só.90 366.?O2?427.62
2104.84 0.501401.12 2094.8427494.84 731.93
2547.44 2557.44 0.509s0.92 1974.1826255.61
3r 53.62 0.281974.18 2s47.4425219.46 r39r .78
0.502483.80 2953.56 3982.0424101.0r r590.08
398r.04 50r 8.53 0.502402.O2 3158.2422688.22
55r 0.5ó 0.504559.40 5003.5320730.67 3270.79
0.504964.81 5448.s6 s944.O3r9398.23 30r 2.3s
s984.03 575r.30 0.503589.2s 538ó.7017708.26
4882.42 -0.r03052.93 3062.93 4872.42r5834.35
3731.21 3741.21 0.50r 39r 5.69 r 935.r 3 r945.r3
Encroochmenl Anq is Summo
tt 5
Floodploin Eng neering Reportl,Aay'2C22tdrFloodplainFloodwayFigure 3. Encraachment Analysis resu/fs map showing the floodway (pink line) and tne flaodplain (black) oielineatianste6
Floodploin Engineering Report May 2022
5.0 No-Rise Certificotion
The proposed Rifle Pit #1 project will result in no ríse to the WSE during the 100-yr flood
known as the base flood elevation (BFE). Furthermore, the prooosed Rifle Pit #1 is also
outside of the floodway, which satisfies requirements of Garfield County Land Use
Development Code (LUDC) Sections 3-301 and4-203 (O). An earthen berm built at2H:1V
slope to a height of 5-ft above ground elevation, seeded with native vegetation blend and
stabilized with erosion control blankets surrounding the proposed Rifle Pit #1 project area
will withstand the hydrostatic and hydrodynamic stresses during the 100-yr flood.
6.0 Engineer's Contoct Informotion
lf you have any questions regarding this Floodplain Engineering Report for the Rifle Pit
#1 project, contact Chip Fisher at (303) 746-2549 and chipf@sqm-inc.com.
Sincerely,
ÉM
Richard (Ch
f
ip) Fisher, P.E.
7s
Floodploin Engineering Report May 2022
AA
Detailed Model Results
s A
Floodplain Engineering Report - Appendix A May 2422
HEGRAS Plan:River: Colorado River Rsach: S¡tg 1 PF1
Resch Rivêr Sta P¡ofil€O lotâl M¡n Ch Él W.S. Elsv CritW.S.E.G. Elev E.G. Slooê Vel Chnl Flow Area Too Wdth Frcudê # Chl
(cb)(fr)lírl lftt (ft)&/n)(ff.16)(sq ft)lft|
S¡te I 30902.14 PF'I 34900.0 5404.0 5412.3 5412.5 0.0 4.99 14256.0 2639.3 0.3'l
Site 1 29650.64 PF1 34900.0 5400.0 5409.4 5406.4 5410.7 0.0 9.17 3806.1 431.7 0.54
Sitê 1 29500 Brido€
Site 1 29427.62 PF'I 34900.0 5400.0 5406.2 5406.2 5409.1 0.0 13.76 2536.7 435.3 1.00
Slte l 2749É..84 PF,I 34900.0 5394.0 5400.4 5400.8 0.0 5.83 9099.6 1989.1
Sitê I 26255.61 PF1 34900.0 5390.5 5397.1 5397.8 0.0 7.92 7603.5 2397.0 0.60
S¡te 1 25219.46 PF1 34900.0 5388.0 5393.1 5393.6 0.0 7.74 8065.2 2482.7 0.64
S¡tê I 24101.O1 PFI 34900.0 5384.0 5389.9 5390.2 0.0 5.54 10742.4 3287.2 0.45
Sit€ 1 22688.22 PFI 34900.0 5380.8 5385.4 5385.8 0.0 6.93 11072.7 4U9.'l 0.63
S¡tè I 20730.67 PF1 34900.0 5374.S 5379.1 5379.3 0.0 5.19 1'1372.2 3465.4 0.49
S¡te'l 19398.23 PF1 34900.0 5372.4 5375.5 5375.7 0.0 4.14 13616.5 4038.0 0.43
Sltê I 47704.26 PF1 34900.0 5366.0 5371.8 5372.O 0.0 4.90 '10922.9 2547.9 o.44
Site l 15834.35 PF1 34900.0 5361.9 5365-6 5366.1 0.0 5.93 6972.2 2816_5 0.6'l
Sile I '13915.6S PF1 34900.0 5353.8 5359.6 5358.1 5359.9 0.0 4.86 8147.4 2500.3 o.44
A-1
E.G, Elev (ft)54r 2.53 Element Lcft OB Chonnol Riqht OB
Vel Head (ft)0.19 Wt. n-Val.0.070 0.035 0.070
W.S. Elev (ft)5412.34 Reach Len. (ft)1356.00 1251.50 946.00
CritW.S. (ft)Flow Area (sq ft)7438.50 2950.46 3866.98
E.G. Slope (ftlft)0.000837 Area (sq ft)7438.50 2950.46 3866.98
Q Total (cfs)34900.00 Flow (cfs)13152.40 '14721.71 7025.89
Top Width (ft)2639.26 Top Width (fr)1521.88 360.1 7 757.21
Vel Total (fVs)2.45 Avg. Vel. (fVs)1.77 4.99 1.82
Max Ghl Dpth (ft)8.34 Hydr. Depth (ft)4.89 8.r9 5.11
Conv. Total (cfs)1206009.0 Conv. (cfs)454496.1 508725.5 242787.5
Lensth Wtd. (ft)1240.44 Wetted Per. (ft)1523.23 360.49 760.21
Min Ch El(ft)5404.00 Shear (lb/sq fr)0.26 0.43 0.27
Alpha 2.06 Stream Power (lb/ft s)0.45 2.14 0.48
Frctn Loss (ft)1.69 Cum Volume (acre-ft)2259.83 1241.74 88.17
748.32 300.04 20.11
Fkxrcl¡rlain Errgirreerirrg Report - Apperrdix A
Plan Colorado River Sito 1 RS; 30902,14 Profìle: PF 1
C&ELoss(ft)0.1'l Cum SA (acres)
Plan:Colorado River Site 1 RS: 29650.64 Profile: PF 1
Plan:Colorado River Site 1 RS: 29500 BR U Proflle: PF 1
ît[ay 2Q22
E.G. Elev (ft)5410.73 Element Left OB Channel Riqht OB
VelHead (ft)1.31 Wt. n-Val 0.035
W.S. Elev (ft)5409.43 Reach Len. (ft)10.00 10.00 10.00
CritW.S. (ft)5406.35 Flow Arêâ (sq ft)3806.1 4
E.G. Slope (ft/ft)0.002587 Area (sq ft)3806.14
Q Total (cfs)34900.00 Flow (cfs)34900.00
Top Width (ft)431.69 Top Width (ft)431.69
Vel Total (ft/s)9.17 Avg. Vel. (fVs)9.17
Max Chl Dpth (ft)9.42 Hydr. Depth (ft)8.82
Conv. Total (cfs)686135.0 Conv. (cfs)686135.0
Lensth Wtd. (ft)10.00 Wetted Per. (ft)435.00
Min Ch EI(ft)5400.00 Shear (lb/sq ft)1.41
Alpha 1.00 Stream Power (lb/ft s)12.96
Frctn Loss (ft)2144.05 't144.68 46.'t8
C&ELoss(ft)
0.03
0.05
Cum Volume (acre-ft)
Cum SA (acres)724.64 288.67 1l.89
E.G. Elev (ft)5410.65 Element Left OB Channel Right OB
Vel Head (ft)1.47 Wt. n-Val.0.035
W.S. Elev (fr)5409.1 I Reach Len. (ft)195.00 195.00 195.00
CritW.S. (ft)5406.53 Flow Area (sq ft)3593.1 6
E.G. Slope (ft/ft)0.003544 Area (sq ft)3593.1 6
Q Total (cfs)34900.00 Flow (cfs)34900.00
Top Width (ft)418.62
Vel Total (fVs)9.71
lgp__wiottr (tt)
Avq. Vel. (ftls)
418.62
9.71
Max Chl Dpth (ft)9.19 Hydr. Depth (ft)8.58
Conv. Total (cfs)586246.7 Conv. (cfs)586246.7
Length Wtd. (fr)195.00 Wetted Per. (ft)476.94
Min Ch El(ft)1.67
Alphâ
5400.00
1.00
Shear (lb/sq ft)
Stream Power (lblft s)16.19
Frcl.n Luss (fl)0.93 Cum Volumê (acre-ft)2144.05 1143.83 46.1 I
C&ELoss(ft)0.21 Cum SA (acres)724.64 288.57 11.89
A-2
Riqht OBElementLeft OB ChannelE.G. Elev (ft)5409.51
0.070 0.035Vel Head (ft)2.16 Wt. n-Val.
18.O2Reach Len. (ft)18.02 18.02W.S. Elev (ft)5407.36
2.21 2963.345406.34 Flow Area (sq ft)CritW.S. (ft)
Area (sq ft)2.21 2963.34E.G. Slope (ftfft)0.006786
o.77 34899.2334900.00 Flow (cfs)Q Total (cfs)
Top Width (ft)28.22 433.42Top Width (ft)461.64
0.35 11.7811.77 Avg. Vel. (ff/s)VelTotal (fUs)
Hvdr. Depth (ft)0.08 6.84Max Chl Dpth (ft)7.36
9.3 423663.8423673.1 Conv. (cfs)Conv. Total (cfs)
28.41 479.53Lensth Wtd. (ft)18.02 Wetted Per. (ft)
2.625400.00 Shear (lb/sq ft)0.03Min Ch El (ft)
0.01 30.83AlPha1.00 Stream Power (lblft s)
46.18Cum Volume (acre-ft)2144.O4 1129.16Frctn Loss (ft)0.15
724.57 286.66 11.89C&ELoss(ft)0.24 Cum SA (acres)
Floodplain Ëngineering Report - Appendix A
Plan Colorado River Site 1 RS:29500 BR D Profile: PF 1
Plan:Colorado River Site I RS:29427.62 Profile: PF 1
Plan: Existing2 Colorado River Site 1 RS: 27494.84 Profile: PF 1
May 2022
Risht OBElementLeft OB ChannelE.G. Elev (ft)5409.1 3
0.0352.94 Wt. n-Val.Vel Head (fi)
Reach Len. (ft)1192.00 1932.78 2126.00W.S. Elev (ft)5406.19
2536.745406.19 Flow Area (sq ft)CritW.S. (ft)
2536.74E.G. Slope (flfl)0.010064 Area (sq ft)
34900.0034900.00 Flow (cfs)Q Total (cfs)
435.26Top Width (fr)435.26 Top Width (ft)
13.7613.76 Avq. Vel. (fr/s)VelTotal (fVs)
5.83Max Chl Dpth (ft)6.19 Hydr. Depth (ft)
347881.4Conv. (cfs)Conv. Total (cfs)347881.4
436.951821.69 Wetted Per. (ft)Length Wtd. (ft)
Shear (lb/sq ft)3.65Min Ch El(fr)5400.00
50.1 I1.00 Stream Power (lb/ft s)Alpha
46.1 ICum Volume (acre-ft)2144.04 1128.02Frctn Loss (ft)6.26
724.57 286.48 11.891.28 Cum SA (acres)C&ELoss(ft)
E.G. Elev (fr)5400.76 Element Left OB Channel Right OB
Vel Head (ft)0.39 Wt. n-Val.0.070 0.035 0.070
W.S. Elev (ft)5400.37 Reach Len. {ft)1158.00 1239.23 '1263.00
CritW.S. (fr)Flow Area (sq ft)4894.15 4186.94 18.54
E.G. Slope (ft/ft)0.001716 Area (sq ft)4894.15 4186.94 18.54
Q Total (cfs)34900.00 Flow (cfs)10474.15 24399.92 25.93
Top Width (ft)1989.06 Top Width (ft)1287.26 693.72 8.08
Vel Total (fUs)3.84 Avg. Vel. (fl/s)2.14 5.83 1.40
Max Chl Dpth (ft)6.46 Hvdr. Depth (ft)3.80 6.04 2.29
Conv. Total (cfs)842407.4 Conv. (cfs)252822.3 588959.2 625.9
Lenqth Wtd. (ft)1214.79 Wetted Per. (ft)1289.19 694.23 9.24
Min Ch El(ft)5394.00 Shear (lb/sq ft)0.41 0.65 0.21
AlPha 1.71 Stream Power (lblft s)0.87 3.77 0.30
Frctn Loss (ft)2.92 Cum Volume (acre-ft)2077.08 978.85 45.72
C&ELoss(ft)0.03 Cum SA (acres)706.95 261.44 11.69
A-3
E,G. Elev (ft)5397.81 Element Loft OB Channel Right OB
VelHead (ft)o.71 Wt. n-Val.0,070 0.035
Reach Len. (ft)1050.00 I 036.1 5 981.00W.S. Elev (ft)
CritW.S. (ft)
5397.1 0
Flow Area (sq ft)4528.64 3074.86
E.G. Slope (ftlft)0.003607 Area (sq ft)4528.64 3074.86
Q Total (cfs)34900.00 Flow (cfs)10531.85 24368.15
ïop Width (ft)2397.04 Top Width (ft)1836.69 560.35
Vel Total (fr/s)4.59 Avg. Vel. (fVs)2.33 7.92
Max Chl Dpth (ft)6.57 Hydr. Depth (ft)2.47 5.49
Conv. Total (cfs)581124.2 Conv. (cfs)175367.1 405757.1
Length Wtd. (ft)1 035.04 Wetted Per. (ft)1837.99 561.12
Min Ch El(ft)5390.53 Shear (lb/sq ft)0.55 1.23
Alpha 2.16 Stream Power (lbfft s)1.29 9.78
Frctn Loss (ft)4.11 Cum Volume (acre-ft)1951 .83 875.56 45.46
Flood¡rlairt Errgineerirrg Report - AppenrJix A
Plan Colorsdo River Site 1 RS: 26255,61 Profile; PF 1
C&ELoss 0.05 Cum SA (acres)
Plan:Colorado River Site 1 RS: 25219.46 Profile: PF 1
Plan:Colorado River Site 1 RS: 24101.01 Profile: PF I
May 2022
665,43 243.60 11.57
E.G. Elev (ft)5393.65 Element Left OB Channel Risht OB
Vel Head (ft)0.53 Wt. n-Val.0.070 0.035 0.070
W.S. Elev (ft)5393.'t2 Reach Len. (ft)I 167.00 I 1 18.45 1053.00
CritW.S. (ft)Flow Area (sq ft)3974.24 2161.75 I 929.1 I
E.G. Slope (ftlft)0.004389 Area (sq fr)3974.24 2161.75 1929.18
Q Total (cfs)34900.00 FIow (cfs)11213.86 16815.01 6871 .1 3
Top Width (fr)2482.74 Top Width (ft)1534.97 469.76 478.00
Vel Total (ft/s)4.33 Avo. Vel. (fUs)2.82 7.78 3.56
Max Chl Dpth (ft)7.12 Hydr. Depth (ft)2.59 4.60 4.04
Conv. Total (cfs)526778.8 Conv. (cfs)169261.4 253804.9 103712.5
Length Wtd. (ft)1129.41 Wetted Per. (ft)1536.54 470.06 478.67
Min Ch El(fr)5388.00 Shear (lb/sq ft)0.71 1,26 1.10
Alpha 1.83 Stream Power (lb/ft s)2.O0 9.80 3.93
Frctn Loss (ft)813.28 23.73
C&ELoss(ft)
3.42
0.07
Cum Volume (acre-ft)
Cum SA (acres)
1849.35
624.79 231.35 6.19
E.G. Elev (fr)5390.16 Element Left OB Channel Right OB
Vel Head (ft)0.31 Wt. n-Val.0.070 0.035 0.070
W.S. Elev (ft)5389.85 Reach Len. (ft)1473.0Q 1412.79 111r.00
CritW.S. (ft)Flow Area (sq ft)6932.86 380s.82 3.76
E.G. Slope (fUft)0.002215 Area (sq ft)6932.86 3805.82 3.76
Q Total (cfs)34900.00 Flow (cfs)13813.37 21083.22 3.42
Top Width (ft)3287.24 Top Width (ft)2460.70 822.80 3.74
Vel Total (fUs)3.25 Avs. Vel. (ff/s)1.99 5.54 0.91
Max Chl Dpth (ft)6.10 Hydr. Depth (ft)2.82 4.63 1.01
Conv. Total (cfs)7415'18.9 Conv. (cfs)293492.1 447954.2 72.6
Length Wtd. (ft)1444.68 Wetted Per. (ft)2461.74 824.44 4.33
Min Ch El(ft)5383.97
Alpha 1.91 Stream Power (lb/ft s)
Shear ft)0.39
0.78
0.64
3.54
0.12
0.11
Frctn Loss (ft)4.42 Cum Volume (acre-ft)1703.25 736.66 0.37
C&ELoss(ft)0.00 Cum SA (acres)571.27 214.75 0.37
A-4
E.G. Elev (ft)5385.75 Element Left OB Channel Right OB
Vel Head (ft)0.31 Wt. n-Val.0.070 0.035 0.070
W.S. Elev (ft)5385.44 Reach Len. (ft)1763.00 1957.55 2135.00
CritW.S. (ft)Flow Area (sq ft)9381.75 1689.59 1.40
E.G. Slope (flft)0.004503 Area (sq ft)9381.75 1689.59 1.40
Q Total (cfs)34900.00 Flow (cfs)23183.79 11714.82 't.40
Top Width (ft)4549.10 Top Width (ft)4103.38 444.13 1.59
Vel Total (fVs)3.15 Avs. Vel. (fUs)2.47 6.93 1.00
Max Chl Dpth (ft)5.44 Hydr. Depth (ft)2.29 3.80 0.88
Conv. Total (cfs)520111.4 Conv. (cfs)345505.8 174584.8 20.9
Length Wtd. (ft)'1819.93 Wetted Per. (ft)4105.57 444.97 2.37
Min Ch El (ft)5380.75 Shear (lb/sq ft)0.64 1.07 0.17
Alpha 2.O3 Stream Power (lb/ft s)1.59 7.40 0.17
Frctn Loss (ft)6.43 Cum Volume (acre-ft)1427.41 647.55 0.30
C&ELoss(ft)0.04 Cum SA (acres)460.29 194.2'l 0.30
Floodplain Engineering Report - Appendix A
Plan: Existing2 Colorado River Site 1 RS: 2268822 Profile: PF I
Plan: Existing2 Colorado River Site 1 RS: 20730.67 Profile: PF 1
Plan:Colorado River Site I RS: 19398.23 Profile: PF 1
May 2022
E.G. Elev (fr)5379.29 Element Left OB Channel Right OB
Vel Head (ft)0.19 Wt. n-Val.0.070 0.035 0.070
W.S. Elev (ft)5379.1 0 Reach Len. (ft)1430.00 1332.44 1200.00
CritW.S. (ft)Flow Area (sq ft)9692.43 1678.11 1.66
E.G. Slope (fVft)0.002843 Area (sq ft)9692.43 1678.11 1.66
Q Total (cfs)34900.00 Flow (cfs)26195.08 8703.58 1.34
Top Width (fr)3465.37 Top Width (ft)2979.13 483.75 2.48
Vel Total (fls)3.07 Avq. Vel. (ft/s)2.70 5.19 0.81
Max Chl Dpth (ft)7.10 Hydr. Depth (ft)3.25 3.47 0.67
Conv. Total (cfs)654494.4 Conv. (cfs)491247.3 163221.9 25.1
Length Wtd. (ft)1407.83 Wetted Per. (ft)2981.29 483.92 2.76
Min Ch El (ft)5374.88 Shear (lb/sq ft)0.58 0.62 0.11
Alpha 1.29 Stream Power (lb/ft s)1.56 3.19 0.09
Frctn Loss (ft)3.60 Cum Volume (acre-ft)1041.41 571.88 0.23
C&ELoss(ft)0.o2 Cum SA (acres)316.96 173.36 0.20
E.G. Elev (ft)5375.67 Element Left OB Channel Risht OB
Vel Head (ft)0.12 Wt. n-Val.0.070 0.03s 0.070
W.S. Elev (ft)5375.54 Reach Len. (ft)1603.00 1689.97 1773.00
CritW.S. (ft)Flow Area (sq ft)I 1887.98 1726.70 1.83
E.G. Slope (ftlft)0.002315 Area (sq ft)1 1887.98 1726.70 1.83
Q Total (cfs)34900.00 Flow (cfs)27747.O5 7151 .50 1.46
Top Width (ft)4038.04 Top Width (ft)3438.84 597.33 1.87
Vel Total (ft/s)2.56 Avg. Vel. (fUs)2.33 4.14 0.80
Max Chl Dpth (ft)7.57 Hydr. Depth (ft)3.46 2.89 0.98
Gonv. Total (cfs)725334.6 Conv. (cfs)576673.2 148631.1 30.3
Length Wtd. (ft)1627.88 Wetted Per. (ft)3443.19 598.09 2.66
Min Ch El(ft)5372.00 Shear (lb/sq ft)0.50 0.42 0.10
Alpha 1.19 Stream Power (lb/ft s)1.16 1.73 0.08
Frctn Loss (ft)3.64 Cum Volume (acre-ft)687.1 I 519.80 0.18
C&ELoss(ft)0.01 Cum SA (acres)211.62 156.83 0.14
A-5
E.O. Elev (ft)Elêmênt
Wt. n-Val.
Lcft OB
0.070
Rlght OB
0.070
5372.02
0.21
Channcl
0.035VelHead (ft)
W.S. Elev (ft)5371.81 Reach Len. (ft)2036.00 1873.91 2008.00
CritW.S. (ft)Flow Area (sq ft)8307.43 2613.22 2.28
E.G. Slope (ftfft)0.002164 Area (sq ft)8307.43 2613.22 2.28
Q Total (cfs)34900.00 Flow (cfs)22085.83 12812.57 1.60
Top Wdth (ft)2547.92 Top Wldth (ft)1878.96 667.70 1.26
Vel Total (fUs)3.20 Avg. Vel. (ft/s)2.66 4.90 0.70
Max Chl Dpth (ft)7.78 Hydr. Depth (ft)4.42 3.91 1.81
Conv. Total (cfs)750235.0 Conv. (cfs)474772.6 275428.O 34.4
Lenqth Wtd. (ft)1932.91 Wetted Per. (ft)1880.55 668.06 3.82
Min Ch El (ft)5366.00 Shear (lb/sq ft)0.60 0.53 0.08
Alpha 1.30 Stream Power (lblft s)1.59 2.59 0.06
Frctn Loss (ft)5.89 Cum Volume (acre-ft)315.59 435.62 0.10
C&ELoss(ft)0.03 Cum SA (acres)113.77 132.29 0.07
Floodplain Engineering Report - Appendix A
Plrn Colorodo Rivcr Sitc 1 RS: 17708.26 Profile: PF 1
Plan Colorado River Site 1 RS: 15834.35 Profile: PF 1
Plan:Colorado River Site I RS: 13915.69 Profile: PF 1
May 2022
E.G. Elev (ft)5366.1 0 Element Left OB Channel Riqht OB
Vel Head (ft)0.50 Wt. n-Val 0.070 0.035
W.S. Elev (ft)5365.60 Reach Len. (ft)2339.00 1918.66 1085.00
CritW.S. (ft)Flow Area (sq ft)1642.86 5329.35
E.G. Slope (fUft)0.004607 Area (sq ft)1642.86 5329.35
Q Total (cfs)34900.00 Flow (cfs)3321.21 31578.79
Top Width (ft)2816.48 Top Width (ft)1011.20 1805.29
Vel Total (fVs)5.01 Avg. Vel. (fl/s)2.02 5.93
Max Chl Dpth (ft)3.69 Hydr. Depth (ft)1.62 2.95
Conv. Total (cfs)514208.8 Conv. (cfs)48934.0 465274.9
Lensth Wtd. (ft)1952.79
Min Ch El(ft)5361.91
Alpha 1.28 Stream Power (lb/ft s)
l4þ!e9 Per. (ft)
Shear (lb/sq ft)
1011.76
0.47
0.94
1807.23
0.85
5.03
Frctn Loss (ft)6.10 Cum Volume (acre-ft)83.05 264.78 0.04
C&ELoss(ft)0.05 Cum SA (acres)46.23 79.09 0.05
E.G. Elev (ft)5359.95 Element Left OB Channel Risht OB
Vel Head (ft)0.35 Wt. n-Val.0.070 0.035 0.070
W.S. Elev (ft)5359.60 Reach Len. (ft)
CritW.S. (ft)5358.08 Flow Area (sq ft)1450.64 6693.24 3.56
E.G. Slope (fvft)0.002255 Area (sq ft)1450.64 6693.24 3.56
Q Total (cfs)34900.00 Flow (cfs)2353.24 32543.53 3.23
Top Width (ft)2500.29 Top Width (ft)710.56 1786.08 3.65
Vel Total (flls)4.28 Avq. Vel. (fUs)1.62 4.86 0.91
Max Chl Dpth (ft)5.85 Hydr. Depth (ft)2.04 3.75 0.98
Conv. Total (cfs)73491 8.6 Conv. (cfs)49554.1 685296.4 68.1
Lensth Wtd. (ft)Wefted Per. (ft)710.60 1787.16 4,16
Min Ch El(ft)5353.75 Shear (lb/sq ft)0.29 0.53 0.12
Alpha 1.21 Stream Power (lblft s)o.47 2.56 0.11
Frötn Loss (ff)Cum Volume (acre-ft)
C&ELoss(ft)Cum SA (acres)
A-6
Floodplain Engineering Report - Appendix A May 2A22
Colorado River Plan: Existing2 511412020
RS = 30902.14
.07 _t_.035 .07
5422
-t-
541
541
co
(ú
(,
lrJ
541
541
541
0 500 1 000 1 500 2000 2500 3000 3500
Colorado River
Station (ft)
Plan: Existing2 511412020
RS = 29650.64
.07 -t-035 .o7
54'.!1
54
541
541
co
(ú
-9
lrJ
Station (ft)
Legend
EGPFl
WSPFl
#
Ground
a
Bank Sta
Legend
EGPFl
WSPFI
Crit PF I
#
Ground
a
Bank Sta
0 200 400 600 800 I 000 1200 1400
A-7
Floodplain Engineering Report - Appendix A May 2Q22
Colorado River Plan: Exlstlng2 511412020
RS = 29500 tsR l-70 Bridge over Colorado River
07 -t-.035 -t_07
5420
'l -r
541 5
co
(ú
-9lrl
541
0 200 400 600 800 1000
Station (ft)
Colorado River Plan: Existing2 511412020
RS = 29500 BR l-70 Bridge over Colorado River
1200 1400
07 -t-035 .07 =l
541 1-
54'l
541
541
C
.9
(ú
c)
uJ
54 1
I
400
Station (ft)
Legend
EGPFl
WSPFI
'- +-- --
Crit PF 1
--{--Ground
a
Bank Sta
I
Legend
EGPFI
WSPFl
-'.- ---+--
Crit PF 1
+
Ground
a
Bank Sta
0 200 600 800 I 000 1200 1400
A-8
Floodplain Engineering Report - Appendix A \Aay 2422
Colorado River Plan: Existing2
RS= 29427.62
5t14t2020
07 -t_035 -t-.07
5414
-t--r
541
541
c
.9
(ú
-9ul
5400
800 1000 1200 14000200400600
Colorado River
Station (ft)
Plan: Existing2
RS = 27494.84
-l-
5t1412020
.07 .035 -l-.07-t-1
Legend
EGPFl
WSPFl
#
Ground
a
Bank Sta
c
.9
(ú
-9lrJ
541
0
Station (ft)
Legend
EGPFl
WSPFI
.'-'''--'.-+.'.'.' '.- -''
Crit PF 1
+
Ground
a
Bank Sta
500 I 000 1500 2000 2500
A-9
Flooclplain Engineering Report - Appendix A Mav 2022
Colorado River Plan: Existing2 511412020
07
RS = 26255.61
-t-.035 .07
5440 'T'
co
G'
-9t¡J
541
0 500 I 000 I 500 2000 2500 3000 3500
Colorado River
Station (ft)
Plan: Existing2
RS = 25219.46
-t_
5114t2020
.47 1 ,035 ,07
rË
co
Ë
-guJ
54 1
0 2000
Station (ft)
Legend
EGPFl
WSPFl
#
Ground
a
Bank Sta
Legend
EGPFl
WSPFl
+
Ground
a
Bank Sta
1000 3000 4000
A-10
Floodplain Engineering Report - Appendix A N/'ay 2022
Colorado River Plan: Existing2 511412020
RS = 24101.01
.07 æs--+-otl
Legend
EGPFl
WSPFl
+
Ground
a
Bank Sta
c
.9
(ú
-9lrJ
54 1
5390
0 1000 2000 3000 4000
Station (ft)
Colorado River Plan: Existing2 511412020
RS=22688.22
5000
.07 -t-ossl.-.oz+l-t-
co
(ú
_9
uJ
54 1
0 3000
Station (ft)
Legend
EGPFl
WSPFl
#
Ground
o
Bank Sta
1 000 2000 4000 5000 6000
A-11
Floodplain Engineering Report - Appendix A May 20'22
Colorado River Plan: Exlstlng2 511412020
H$ = 20730.ti7
.07 -t-.oss 'f-.oz"l1-
c
.9
(ft
-9tll
54
5370
0 1000 2000 3000
Station (ft)
Colorado River Plan: Existing2
RS = 19398.23
4000 5000 6000
5t14t2020
.o7 -t-.oss*þozl1
541 0
.9
(It
o
uJ
0 3000 4000
Station (ft)
Legend
EGPFl
WSPFl
+
Ground
a
Bank Sta
Legend
EGPFl
WSPFl
+
Ground
a
Bank Sta
1 000 2000 5000 6000 7000
A-12
Floodplain Engineering Report - Appendix A May 2A22
Colorado River Plan: Existing2 511412020
RS = 17708.26
.o7 .ossf*.ot-"1
5430
541
co
(û
-9
IJJ
0 1 000 2000 3000 4000 5000
Station (ft)
Colorado River Plan: Existing2 511412020
RS = 15834.35
6000 7000
.o7 .035 JI
ö
7
5380
c
.9
(ú
otr
0
Station (ft)
Legend
EGPFl
WSPFl
#
Ground
a
Bank Sta
Legend
EGPFl
WSPFl
-_--{-Ground
o
Bank Sta
1000 2000 3000 4000 5000
A-13
Floodplain Engineering Report - Appendix A May 2022
Colorado River Plan: Existing2
R$ = 13015.69
-t.
5t1412020
.07 1 035
7
co
(!
-9uJ
0 I 000 2000
Station (ft)
3000 4000
Legend
EGPFl
WSPFl
--- -.'. +---*'-'.'
Crit PF 'l
#
Ground
a
Bank Sta
A-14
Floodplain Engineering Report - Appendix A May 2422
HEGRAS Plan:River: Colorado R¡ver Reach: S¡te'l PF,I
Reach River Sta Profile O Total Min Ch El w.S. Elev CritW.S.E.G. Elev E.G. Slooo Vel Chnl Flw Areâ Top Width Froude # Chl
(cfs)(ft)tftì tfr)lfrl (ñ/fr)(fr/s)lso fi|lftl
Site 1 30902.14 PFl 34900-0 5404.0 5412.3 5412.5 0.0 5.00 14244.1 2641.0 0.31
S¡tê I 23650.64 PFl 34900-0 5400.0 5409.4 5406.4 5410.7 0.0 9.17 3806.1 431.7 0.54
S¡te I 29500 Bridge
S¡tê 1 29427.42 PF1 34900.0 5400.0 5406.2 5406.2 5409.1 0.0 13.75 2538.0 435.3 1.00
Slte 1 2749!,.U PF1 34900.0 5394_0 5400-4 5400.8 0.0 5.85 9057.0 1988.9 o.42
S¡te I 2A255.4'l PFl 34900.0 53S0.5 5397-1 5397.8 0.0 7.93 7604.5 2396.3 0.60
Sile 1 25219.48 PF1 34900.0 5388.0 5393.1 5393.6 0.0 7.80 8060-1 2481.8 0.64
Sile 1 2 101.01 PF1 34900.0 5384.0 5389.9 5390.2 0.0 5.53 10767.'l 3290.2 0.45
Silê I 22688.22 PF1 34900.0 5380.8 5385.4 5385.8 0.0 6.95 101 18.4 3654.6 0.63
Süê I 2fJ790.67 PF1 34900.0 5374.€5379.1 5379.3 0.0 5.18 1 1396.7 3505.0 0.49
S¡tê 'l 19398.23 PF1 34900.0 5372.4 5375.5 5375.6 0_0 4.'t2 13583.7 4022.9 0.43
S¡te 1 17708.26 PF,I 34900.0 5366.0 5371.8 5372.0 0.0 4.47 10968.8 2550_1 0.43
Sitô I 15834.35 PFl 34900.0 5361.9 5365.6 5366.1 0.0 5.33 6965.2 2814.3 0.61
Site 1 13915.69 PFl 34900.0 5353.7 5359.6 5358.1 5359.9 0.0 4.86 8149.5 2491.9 0.44
A-15
E.G. Elev (ft)5412.53 Elëmênt LèIt OB Chânnêl Rlght OB
Vel Head (ft)0.19 Wt. n-Val.0.070 0.035 0.070
W.S. Elev (ft)5412.34 Reach Len. (ft)1356.00 1251 .50 946.00
CritW.S. (ft)Flow Area (sq ft)7426.19 2950.85 3867.08
E.G. Slope (fUft)0.000840 Area (sq ft)7426.'t9 29s0.85 3867.08
Q Total (cfs)34900.00 Flow (cfs)13121.90 14743.20 7034.90
Top Width (ft)2641.05 Top Wldth (ft)1523.66 360.1 7 757.21
Vel Total (fUs)2.45 Avg. Vel. (fVs)1.77 5.00 1.82
Max Chl Dpth (ft)8.34 Hydr. Depth (ft)4.87 8.19 5.11
Conv. Total (cfs)1204513.0 Conv. (cfs)452879.5 508836.0 242797.4
Length Wtd. (ft)1240.36 Wetted Per. (ft)1525.06 360.49 760.22
Min Ch El(ft)5404.00 Shear (lb/sq ft)o.26 0.43 0.27
Alpha 2.06 Stream Power (lb/ft s)0.45 2.14 0.49
Frctn Loss (ft)1.69 Cum Volume (acre-ft)2226.64 1240.44 87.86
C&ELoss(ft)0.1'l Cum SA (acres)715.85 300.03 20.12
Floodplain Englneerlng Report - Appendix A
Plan:Colorado Rivcr Sitc 1 RS: 30902.14 Profile: PF 1
Plan:Colorado River Site 1 RS:29650.64 Profile: PF 1
Plan: Proposed2 Colorado River Site I RS:29500 BR U Profile: PF 1
l,i'ay 2022
E.G. Elev (ft)54'tO.73 Element Left OB Channel Riqht OB
Vel Head (ft)1.31 Wt. n-Val.0.035
W.S. Elev (ft)5409.43 Reach Len. (ft)10.00 10.00 10.00
CritW.S. (ft)5406.35 Flow Area (sq ft)3806.14
E.G. Slope (ft/fr)0.002587 Area (sq ft)3806.14
Q Total (cfs)34900.00 Flow (cfs)34900.00
Top Width (ft)431.69 Top Width (ft)431.69
Vel Total (fVs)9.17 Avg. Vel. (fVs)9.17
Max Chl Dpth (ft)9.42 Hydr. Depth (ft)8.82
Conv. Total (cfs)686r 35.0 Conv. (cfs)686135.0
Lensth Wtd. (fr)10.00 435.00
Min Ch El (ft)5400.00
Wetted Per (ft)
Shear (lb/sq fr)1.41
Alpha 1.00 Stream Power (lb/ft s)12.96
Frctn Loss (ft)0.03 Cum Volume (acre-ft)2111.05 1143.37 45.87
C&ELoss(ft)0.05 Cum SA (acres)692.14 288.66 11.90
E.G. Elev (ft)5410.65 Element Left OB Channel Riqht OB
Vel Head (ft)1.47 Wt. n-Val.0.035
W.S. Elev (ft)5409. I I Reach Len. (ft)195.00 195.00 195.00
CritW.S. (ft)5406.53 Flow Area (sq ft)3593.16
E.G. Slope (ftJfr)0.003544 Areâ (sq ft)3593.1 6
Q Total (cfs)34900.00 Flow (cfs)34900.00
Top Width (ft)418.62 Top Width (ft)418.62
Vel Total (fUs)9.71 Avg. Vel. (fr/s)9.71
Max Chl Dpth (ft)9.19 Hydr. Depth (ft)8.58
Conv. Total (cfs)586246.7 Conv. (cfs)586246.7
Length Wtd. (ft)195.00 Wetted Per. (ft)476.94
Min Ch El (ft)5400.00 Shear (lb/sq ft)1.67
Alpha 1.00 Stream Power (lblft s)16.19
Frctn Loss (ft)0.93 Cum Volume (acre-ft)2111.05 1142.52 45.87
C&ELoss(ft)0.21 Cum SA (acres)692.14 288.56 11.90
A-16
Riqht OBElementLeft OB ChannelE.G. Elev (ft)5409.51
0.070 0.0352.16 Wt. n-Val.Vel Head (ft)
Reach Len. (ft)18.02 18.02 18.02W.S. Elev (ft)5407.36
2.10 2961.655406.34 Flow Area (sq ft)CritW.S. (ft)
Area (sq ft)2.10 2961.65E.G. Slope (fVft)0.006797
0.72 34899.2834900.00 Flow (cfs)Q Total (cfs)
Top Width (ft)27.15 433.38Top Width (ft)460.53
0.34 11.7811.78 Avg. Vel. (ftls)VelTotal (ft/s)
0.08 6.83Max Chl Dpth (ft)7.35 Hydr. Depth (ft)
423294.2423303.0 Conv. (cfs)8.8Conv. Total (cfs)
27.34 479.47Lenqth Wtd. (ft)18.02 Wetted Per. (ft)
Shear (lb/sq ft)0.03 2.62Min Ch El (ft)5400.00
0.01 30.891.00 Stream Power (lblft s)Alpha
45.87Cum Volume (acre-ft)2111.O5 1127.85Frctn Loss (ft)0.15
692.08 286.65 11.900.23 Cum SA (acres)C&ELoss(ft)
Floodplain Engineering Report - Appendix A
Plan:Colorado River Site 1 RS: 29500 BR D Profile: PF I
Plan:Colorado River Site 1 RS: 29427.62 Profile: PF 1
Plan: Proposed2 Colorado River Site I RS: 27494.84 Profile: PF 1
May 2422
Riqht OBElementLeft OB ChannelE.G. Elev (ft)5409.13
0.0352.94 Wt. n-Val.Vel Head (ft)
1 192.00 1932.78 2126.00W.S. Elev (ft)5406.1 9 Reach Len. (ft)
2538.O25406.1 I Flow Area (sq ft)CritW.S. (ft)
2538.O2E.G. Slope (fVft)0.010048 Area (sq ft)
34900.0034900.00 FIow (cfs)Q Total (cfs)
435.29Top Width (ft)435.29 Top Width (ft)
13.75Avs. Vel. (fl/s)Vel Total (fVs)13.75
5.83Max Chl Dpth (ft)6.19 Hydr. Depth (ft)
Conv. (cfs)348159.0Conv. Total (cfs)348159.0
436.981822.27 Wetted Per. (ft)Length Wtd. (ft)
Shear (lb/sq ft)3.64Min Ch El(ft)5400.00
50.1 01.00 Stream Power (lb/ft s)Alpha
2111.O5 1126.71 45.87Frctn Loss (ft)6.32 Cum Volume (acre-ft)
286.47 11.901.27 Cum SA (acres)692.07C&ELoss(ft)
E.G. Elev (ft)5400.76 Element Left OB Channel Right OB
Vel Head (ft)0.39 Wt. n-Val.0.070 0.035 0.070
W.S. Elev (ft)5400.36 Reach Len. (ft)1 158.00 1239.23 1263.00
CritW.S. (ft)Flow Area (sq ft)4861.16 4177.35 18.47
E.G. Slope (fUft)0.001737 Area (sq ft)4861.16 4177.35 18.47
Q Total (cfs)34900.00 Flow (cfs)10420.06 24453.99 25.95
Top Width (ft)r 988.92 Top Width (ft)1287.13 693.72 8.07
VelTotal (fVs)3.85 Avg. Vel. (fr/s)2.14 5.85 1.41
Max Ghl Dpth (ft)6.45 Hvdr. Depth (fi)3.78 6.02 2.29
Conv. Total (cfs)837333.6 Conv. (cfs)250001.9 586709.1 622.6
Lensth Wtd. (ft)1214.72 Wetted Per. (ft)1289.08 694.24 9.23
Min Ch El (ft)5394.00 Shear (lb/sq ft)0.41 0.65 0.22
Alpha 1.71 Stream Power (lb/ft s)0.88 3.82 0.30
Frctn Loss (ft)2.95 Cum Volume (acre-ft)2044.53 977.73 45.42
C&ELoss(ft)0.03 Cum SA (acres)674.46 261.42 11.70
A-17
E.G. Elev (ft)5397.78 Elêmênt Lêft OB Channcl Rlght OB
Vel Head (ft)0.71 Wt. n-Val.0.070 0.035
W.S. Elev (ft)5397.07 Reach Len. (ft)1050.00 1 036.1 5 981.00
CritW.9. (ft)Flow Area (sq fl)4547.55 3050.94
E.G. Slope (ftfft)0.003637 Area (sq ft)4547.55 3056.94
Q Total (cfs)34900.00 Flow (cfs)10650.84 24249.15
Top Wldth (fr)2396.30 Top Width (ft)1836.46 559.84
VelTotal (ft/s)4.59 Avs. Vel. (fVs)2.34 7.93
Max Chl Dpth (ft)6.54 Hvdr. Depth (ft)5.462.48
Conv. Total (cfs)578683.9 Conv. (cfs)176603.8 402080.1
Lensth Wtd. (ft)1035.'t2 Wetted Per. (ft)1837.77 560.58
Min Ch El (ft)5390.53 Shear (lb/sq ft)0.56 1.24
Alpha 2.16 Stream Power (lb/ft s)1.32 9.82
Frctn Loss (ft)4.10 Cum Volume (acre-ft)1919.47 874.83 45.1 6
C&ELoss(ft)0.05 Cum SA (acres)632.94 243.59 11.58
Floodplain Engineering Report - Appendix A
Plan:Colorado River Site 1 RS: 26255.61 Profile: PF 1
Plan:Colorado River Site 1 RS: 25219.46 Profile: PF 1
Plan:Colorado River Site 1 RS: 24101.01 Profile: PF 1
May 2022
E.G. Elev (ft)5393.63 Element Left OB Channel Riqht OB
Vel Head (ft)0.54 Wt. n-Val.0.070 0.035 0.070
W.S. Elev (ft)5393.09 Reach Len. (ft)'t 167.00 1118.45 1053.00
CritW.S. (ft)Flow Area (sq ft)3947.71 2'196.65 1915.77
E.G. Slope (fUft)0.00432s Area (sq ft)3947.71 2196.65 1915.77
Q Total (cfs)34900.00 Flow (cfs)11015.23 17142.44 6742.32
Top Width (ft)2481.76 Top Width (ft)1534,O7 469.76 477.93
Vel Total (ft/s)4.33 Avg. Vel. (fl/s)2.79 7.80 3.52
Max Chl Dpth (ft)7.09 Hydr. Depth (ft)2.57 4.68 4.O1
Conv. Total (cfs)530694.1 Conv. (cfs)167499.1 260670.3 102524.6
Lensth Wtd. (ft)
Min Ch El (ft)
1129"40
5388.00
Wetted Per. (ft)
Shear (lb/sq ft)
1535.65
0.69
470.06
1.26
478.59
1.08
Alpha 1.85 Stream Power (lb/ft s)1,94 9.85 3.80
Frctn Loss (ft)3.39 Cum Volume (acre-ft)'t 817.09 812.35 23.58
C&ELoss(ft)0.07 Cum SA (acres)592.32 23't.35 6.20
E.G. Elev (ft)5390.'t8 Element Left OB Channel Right OB
VelHead (ft)0.31 Wt. n-Val.0.070 0.035 0.070
W.S. Elev (ft)5389.86 Reach Len. (ft)1473.OO 1412.79 11 11.00
CritW.S. (ft)Flow Area (sq ft)6950.58 3812.73 3.74
E.G. Slope (fvft)0.002201 Area (sq ft)6950.58 3812.73 3.74
Q Total (cfs)34900.00 Flow (cfs)13817.05 2't079.60 3.36
Top Width (ft)3290.17 Top Width (ft)2463.58 822.80 3.79
Vel Total (ft/s)3.24 Avg. Vel. (fr/s)1.99 5.53 0.90
Max Chl Dpth (ft)6.11 Hydr. Depth (ft)2.82 4.63 0.99
Conv. Total (cfs)743889.4 Conv. (cfs)294508.8 449309.1 71.5
Lensth Wtd. (ft)1444.67 Wetted Per. (ft)2464.64 824.45 4.37
Min Ch El(ft)5383.97 Shear (lb/sq ft)0.39 0.64 0.12
Alpha 1.91 Stream Power (lblft s)0.77 3.51 0.11
Frctn Loss (ft)4.42 Cum Volume (acre-ft)1671.10 735.20 0.38
C&ELoss(ft)0.00 Cum SA (acres)538.77 214.75 0.38
A-18
Riqht OBElementLeft OB ChannelE.G. Elev (ft)5385.76
0.070 0.035 0.070Vel Head (ft)0.33 Wt. n-Val.
2135.00Reach Len. (ft)1763.00 1957.55W.S. Elev (ft)5385.43
8428.58 1688.44 1.39Flow Area (sq ft)CritW.S. (ft)
1.39Area (sq ft)8428.58 1688.44E.G. Slope (ftlft)0.004527
23'165.64 11732.96 't.4034900.00 Flow (cfs)Q Total (cfs)
r.59Top Width (ft)3208.84 444.13Top Width (ft)3654.56
2.75 6.95 1.003.45 Avg. Vel. (ftls)VelTotal (fUs)
Hvdr. Depth (ft)2.63 3.80 0.88Max Chl Dpth (ft)5.43
174383.3 20.8518707.7 Conv. (cfs)344303.6Conv. Total (cfs)
3211.26 444.98 2.37Lenqth Wtd. (ft)1819.93 Wetted Per. (ft)
1.O7 0.17Shear (lb/sq ft)0.74Min Ch El(fr)5380.75
2.04 7.45 0.17Alpha1.79 Stream Power (lb/ft s)
o.32Cum Volume (acre-ft)1411.07 645.99Frctn Loss (ft)6.45
442.86 194.21 0.310.04 Cum SA (acres)C&ELoss(ft)
Floodplain Engineering Report - Appendix A
Plan:Colorado River Site 1 RS: 22688.22 Profile: PF 1
Plan Colorado River Site I RS: 20730.67 Profile: PF 1
Plan: Proposed2 Colorado River Site 1 RS: 19398.23 Profile: PF 1
lüiay 2022
Riqht OBElementLeft OB ChannelE.G. Elev (ft)5379.28
0.070 0.035 0.0700.19 Wt. n-Val.Vel Head (ft)
1430.00 1332.44 1200.00W.S. Elev (ft)5379.09 Reach Len. (ft)
1675.51 1.65Flow Area (sq ft)9719.50CritW.S. (ft)
9719.50 1675.51 1.65E.G. Slope (fVft)0.002846 Area (sq ft)
8685.40 1.3334900.00 Flow (cfs)26213.27Q Total (cfs)
3018.75 483.75 2.47Top Width (ft)3504.97 Top Width (ft)
5.18 0.803.06 Avq. Vel. (fl/s)2.70Vel Total (fVs)
3.22 3.46 0.67Max Chl Dpth (ft)7.09 Hydr. Depth (ft)
162800.9 24.9Conv. (cfs)491346.7Conv. Total (cfs)654172.5
3020.93 483.92 2.751408.01 Wetted Per. (ft)Length Wtd. (ft)
0.11Shear {lb/sq ft)0.57 0.62Min Ch El(ft)5374.88
1.54 3.19 0.091.30 Stream Power (lbfft s)Alpha
0.24Cum Volume (acre-ft)1043.82 570.40Frctn Loss (ft)3.62
316.84 173.36 0.210.02 Cum SA (acres)C&ELoss(ft)
E.G. Elev (ft)5375.64 Element Left OB Channel Right OB
Vel Head (ft)0.12 Wt. n-Val 0.070 0.035 0.070
W.S. Elev (ft)5375.52 Reach Len. (ft)1603.00 1689.97 1773.00
CritW.S. (ft)Flow Area (sq ft)11874.22 1707.57 1.89
E.G. Slope (fUft)0.002331 Area (sq ft)11874.22 1707.57 1.89
Q Total (cfs)34900.00 Flow (cfs)27854.81 7043.63 1.56
Top Width (ft)4022.93 Top Width (ft)3423.81 597.33 1.80
Vel Total (ft/s)2.57 Avg. Vel. (fUs)2.35 4.12 0.83
Max Chl Dpth (ft)7.52 Hvdr. Depth (ft)3.47 2.86 1.05
Conv. Total (cfs)722901.5 Conv. (cfs)576970.9 145898.2 32.4
Lenqth Wtd. (ft)1627.56 Wetted Per. (ft)3428.90 598.09 2.61
Min Ch El (ft)5372.O0 Shear (lb/sq ft)0.50 o.42 0.11
AlPha 1.19 Stream Power (lb/ft s)1.18 1.71 0.09
Frctn Loss (ft)3.64 Cum Volume (acre-ft)689.38 518.66 0.19
C&ELoss(ft)0.01 Cum SA (acres)211.O9 r 56.82 0.15
A-19
E,G. Elev (ft)5372.00 ElerrrerrI Left OB Channel Risltt OB
Vel Head (ft)0.20 Wt. n-Val 0.070 0.035 0.070
W.S. Elev (ft)5371.79 Reach Len. (ft)2036.00 1873.91 2008.00
CritW.S. (ft)Flow Area (sq ft)8365.50 2600.77 2.55
E.G. Slope (fUft)o.002147 Area (sq ft)8365.s0 2600.77 2.55
Q Total (cfs)34900.00 Flow (cfs)22240.87 12657.13 2,01
Top Width (ft)2550.1 5 Top Width (ft)1880.85 667.70 1.60
Vel Total (fUs)3.18 Avs. Vel. (fUs)2.66 4.87 0.79
Max Chl Dpth (ft)7.76 Hydr. Depth (ft)4.45 3.90 1.60
Conv. Total (cfs)753201.6 Conv. (cfs)479995.9 273162.4 43.4
Lenqth Wtd. (ft)1933.27 Wetted Per. (ft)1882.43 668.37 3.57
Min Ch El(ft)5366.00 Shear (lb/sq ft)0.60 0.52 0.10
Alpha 1.29 Stream Power (lb/fr s)1.58 2.54 0.08
Frctn Loss (ft)5.87 Cum Volume (acre-ft)316.97 435.08 0.r0
C&ELoss(ft)0.03 Cum SA (acres)113.48 132.29 0.08
Floodplain Ëngineering Report - Appendix A
Colorado River Site 1 RS: 17708.26 Profile: PF 1
Plan:Colorado River Site 1 RS: '15834.35 Profile: PF 1
Plan:Colorado River Site 1 RS: 13915.69 Profile: PF 1
ïÅay 2O22
Plan
E.G. Elev (ft)5366.09 Element Left OB Channel Riqht OB
Vel Head (ft)0.50 Wt. n-Val.0.070 0.035
W.S. Elev (ft)5365.59 Reach Len. (ft)2339.00 1918.66 1085.00
CritW.S. (ft)Flow Area (sq ft)1639.42 5325.82
1639.42 5325.82E.G. Slope (ftlft)
Q Total (cfs)
0.004618
34900.00
Area (sq ft)
Flow (cfs)3317.93 31582.O7
Top Width (ft)2814.33 Top Width (ft)1009.07 1805.27
Vel Total (fUs)5.01 Avg. Vel. (fVs)2.02 5.93
Max Chl Dpth (ft)3.68 Hydr. Depth (ft)1.62 2.95
Conv. Total (cfs)513590.6 Conv. (cfs)48826.9 464763.8
Lensth Wid. (ft)1953.00 Wetted Per. (ft)1009.63 't807.21
Shear (lb/sq ft)0.47 0.85
Stream Power (lb/ft s)0.95 5.04
Min Ch El(ft)
Alpha
Frctn Loss (ft)
5361.91
1.28
6.10 Cum Volume (acre-ft)83.1 5 264.59 0.04
C&ELoss(ft)0.05 Cum SA (acres)45.94 79.09 0.05
E.G. Elev (fr)5359.94 Element Left OB Channel Risht OB
VelHead (ft)0.34 Wt. n-Val.0.070 0.035 0.070
W.S. Elev (ft)5359.60 Reach Len. (ft)
CritW.S. (ft)5358.10 Flow Area (sq ft)1457.74 6688.1 I 3.55
E.G. Slope (fVft)0.002255 Area (sq ft)'t457.74 6688.1 I 3.55
Q Total (cfs)34900.00
Top Width (ft)2491.92
!_o1v (cfs)
Top Width (ft)
2391.44
702.19
32505.35
1786.08
3.22
3.64
Vel Total (ft/s)4.28 Avq. Vel. (fl/s)1.64 4.86 0.91
Max Chl Dpth (ft)5.91 Hydr. Depth (ft)2.08 3.74 0.97
Gonv. Total (cfs)
Length Wtd. (ft)
734863.5 Conv. (cfs)
Wetted Per. (ft)
50354.7
702.24
684441.1
1787.14
67.7
4.16
Min Gh El(ft)5353.69 Shear (lb/sq ft)0.29 0.53 0.12
Alpha 't.21 Stream Power (lb/ft s)0.48 2.56 0.11
Frctn Loss (ft)Cum Volume (acre-ft)
C&ELoss(ft)Cum SA (acres)
A-20
Floodplain Engineering Report - Appendix A May 2022
Colorado River Plan: Proposed2 511412020
RS = 30902.14
.07 -t-.035 .07-t-
541
541
rË
o
(ú
_9
UJ
54
5412
541
0 500 1 000 1500 2000 2500 3000 3500
Colorado River
Station (ft)
Plan: Proposed2
RS = 29650.64
-t-
5t14t2020
.07 -t-.035 .o7
541
541
541
541
-r 1
co
(ú
-9lrJ
Station (ft)
Legend
EGPFl
WSPFl
+
Ground
a
Bank Sta
Legend
EGPFl
WSPFl
' -----+'.- -
Crit PF 1
#
Ground
a
Bank Sta
5402
0 200 400 600 800 '1000 1200 1400
A-21
Floodplain Engineering Report - Appendix A May 2022
Colorado River Plan: Proposed2 511412020
RS = 29bUU tsR l-l0 Bridge over üolorado River
.07 J-.035 _t-07-l -t-
541
€ s4,lo
-9Irl
0 200 400 600 800 1000
Station (ft)
Colorado River Plan: Proposed2 511412020
RS = 29500 BR l-70 Bridge over Colorado River
1200 1400
07 _t-.035 _t_,07
541
-t--t-
54
54
54
.9
(ú
-gt¡J
541
'trrrr l
Station (ft)
Legend
EGPFl
WSPFl
-'.'.'- '.'. '.+ -'.'..'..''.''.
Crit PF I
#
Ground
o
Bank Sta
II
I
Legend
EGPFl
WSPFl
..-- -'-'-+-- ---
Crit PF 1
+
Ground
o
Bank Sta
0 200 400 600 800 I 000 1200 r400
A-22
Floodplain Engineering Report - Appendix A May 2022
Colorado River Plan: Proposed2 511412020
RS = 29427.62
.07 .035 _t-.07
54
-t-
541
541
c
.9
o
-9uJ
0 200 400 600 800 1000 1200 1400
Colorado River
Station (ft)
Plan: Proposed2 511412020
RS = 27494.84
.07 035 -t-.07
5450 1-
Legend
EGPFl
WSPFl
#
Ground
o
Bank Sta
c
.9
(ú
-9lrJ
541
0
Station (ft)
Legend
EGPFl
WSPFl
*-----'.-+----''.'.,
Crit PF 1
#
Ground
a
Bank Sta
500 r 000 1 500 2000 2500
A-23
Floodplain Ëngineering Report - Appendix A May 2O22
Colorado River Plan: Proposed2 5l14l2O2O
RS = 26255.61
.07 .035 .07
Êo
(ú
(l,
Lrj
541
5390
0 500 1 000 1500 2000
Station (ft)
Plan: Proposed2
RS = 25219.46
-t-
2500 3000 3500
Colorado River 5t14t2020
.07 t'.035 07
541Ë
co'a
(It
d)ú
0 2000
Station (ft)
Legend
EGPFl
WS PF,I
#
Ground
o
Bank Sta
Legend
EG PF,I
WSPFl
+
Ground
a
Bank Sta
5390
1000 3000 4000
A-24
Floodplain Engineering Report - Appendix A May 2022
Colorado River Plan: Proposed2 511412020
RS = 24101.01
.o7 _t-ms=+-.otl-t-
co
(ú
-9ut
54
0 1000 2000 3000 4000
Station (ft)
Colorado River Plan: Proposed2 511412020
RS = 2268822
5000
.07 .oss"f--.oz-l
il1
Legend
EGPFl
WSPFl
#
Ground
o
Bank Sta
co
(tr
_g
uJ
5370
0 3000
Station (ft)
Legend
EGPFl
WSPFl
#
Ground
a
Bank Sta
1000 2000 4000 5000 6000
A-25
Floodplain Engineering Report - Appendix A May 2022
Colorado Rlver Plan: Proposed2 5l14l2O2O
RS = 20730.67
.07 -t-oss "f-.ozlu40'r
5420
c
.9
(ú
o
EI
5380
0 r 000 2000 3000
Station (ft)
4000 5000 6000
Colorado River Plan: Proposed2
RS = 19398.23
511412020
.07 -t_oas{<oal1
541
c
.9
(ú
-9llJ
3000 4000
Station (ft)
Legend
EGPFl
WSPFl
--{--Ground
o
Bank Sta
Legend
EGPFl
WS PF,I
#
Ground
o
Bank Sta
0 1 000 2000 5000 6000 7000
A-26
Floodplain Engineering Report - Appendix A May 2022
Colorado River Plan: Proposed2 5l14l2O2O
RS = 17708.26
.07 J-.oes-þ.oz-"11-
541
rtr
go
(!
oú
0 r 000 2000 3000 4000 5000
Station (ft)
Colorado River Plan: Proposed2 511412020
RS = 15834.35
6000 7000
07 035 -tlt
7
co
(ú
-9
UJ
Station (ft)
Legend
EGPFl
WSPFl
-------t-
Ground
a
Bank Sta
Legend
EGPFl
WSPFl
#
Ground
a
Bank Sta
1000 2000 3000 4000 5000
A-27
Floodplain Engineering Report - Appendix A May 2022
Colorado River Plan: Proposed2 511412020
RS = 13015.6e
.o7 .035
7
E
.9
(ú
-9
t¡J
0 1 000 2000
Station (ft)
3000 4000
Legend
EGPFl
WSPFl
---'. '. -- +.'.'-'. - --
Crit PF 1---------{-
Ground
a
Bank Sta
A-28
Floodplain Engineering Report - Appendix A \liay 2022
R¡vêr Rêach: Sitê 1
Rôâú R¡vê¡ Ste Proñlê W.S, Elêv Pñt DÊ[r WS E.G- Flêv ToD Wdth Act Q L€fr O Ch¿nnêl ô Rl.ht Fîô Sh L Ch Slã L chshR Enc Stâ R
Sit6 1
tñÌ lfr)rfi)(cß)
14743.20
(cfs)
7034.90
tfrì lñl tftì tn)
Stt€ 1 m9î2-14 PF2 5412,45 54 t3.56 424.33 8160.65 24671,19 2068.16 1597.59 1956.95 ?317.12 2421.52
Snå 1 29650.64 PF1 il09-43 5/10.73 431.69 34900.O0 336.82 798.40
Sltê 1 29650.64 PF2 ilog-42 0.0c 5410.73 431.69 34900.00 326.42 336.82 798.40 808.41
S[ê 1 æmo BR tJ PFl 5409.1S il10.65 414,62 34900.00 336.a2 798.40
stb 1 29f)O BR U PF2 5409.1S o.0c 5410.65 418.62 3¿qoo oo 326-42 336.A2 798.40 808.4r
Slts 1 29MO BR D PF1 5407.3€5409.51 ¿61.o9 o.75 34899.26 366.90 982.50
shl 2C500 BR D PF2 5407.3€0.0c &0s.51 433.40 34900.00 356.90 365 90 c82.50 992.50
sit8 I 25427.62 PF1 ü06.1€540S.13 435.29 u900.o0 366.90 982.50
site I )N?7 ã2 PF2 5406.1S 0.00 540S.13 436.2â 34S00.00 356.S0 366.90 982.50 c92.5n
Sfta 1 27494.A4 PFl 5400.36 t00.76 1988.92 10420.06 24453.99 25.95 1401 -12 2094.M
Sil6 1 27494.U PF2 5400.86 0.50 5401.32 1371.76 7679.25 27147.41 33.4 731-93 1401.12 2094.U 2104.U
Silê I ?6255.41 PF1 5397.07 5397.78 2396.30 10650.&24249.15 1974,18 2547.U
Silê I 26255.61 PF2 5397.57 0.50 5394.42 1590.65 7356,71 27543.29 950.92 1974-14 2il7.U 2557.44
Siiô 1 25219.46 pF1 5393-O9 5393.63 24A1.76 1101523 17142.U 6742.32 2483.80 2353.56
Sito 1 t5t19 Á6 pFt 5393.37 0.28 5394.r 0 1761 e4 12335.27 19989.61 2575-12 1391.78 2483.80 2953.56 3153-62
stb 1 24141.O1 PF .I 5389.E6 5390-l I 3290.17 138',t 7.05 2f079.60 3.36 4154.2Â 398t.M
Sliê 1 24101,O1 PF2 5390.36 o.50 5390.71 2391.96 1'1523.21 23375 09 1.7ã 1590.08 3154.24 3981.{X 3982.04
Silê I 22AAe 22 PFI 5385.43 5385.76 36#.56 23165.64 11732.ß 1.40 4559.40 5003 53
sib 1 22444,22 PF2 5385.94 0.50 5386.¿5 2603.56 19643.42 15253.69 2.90 2402.02 4559.40 5003-53 5018.53
Sito I 20730.87 PFl 5379.09 5379.28 3504.97 26?13.27 a685.40 1.33 4964.8'1 5¡140.56
Site I 20730-87 pF2 s37S.59 0.50 5379.85 2135.99 24443.64 10453.36 2.96 3270.79 4964.81 il48.56 5510.5ß
Sltâ 1 ,19398.23 PF1 5375.52 5375.64 4022.92 27855-'t2 7043.32 r.56 5386.70 5S84.03
Sitó 1 193S8.23 PF2 5376.n2 0.50 5376.19 2931.68 26lAq ¿l a710.59 3012.35 5386.70 5984.03 59,14.03
Sll. 1 lnia-2â PF1 5371.79 5372 AO 2550.1 6 22240.22 12657.77 2.01 5073.60 5741 3n
Sn. 1 1ni8.26 PF2 5372.30 050 5372-53 2153.S0 15964.22 14932.92 2.86 3549 25 5073_60 4741.30 575t.30
Sfte t 15834.35 PF1 5365-5S 5366.09 24M.29 3317.35 31582.65 3062.93 4872.42
lsg.35 PF2 5365-49 -0.f0 5366.21 1â10_39 1.50 34838.50 3052.93 3062.93 ¿472 42 Å442.42
stu1 I 391 5.69 PF1 5359.60 5359.34 2492,14 2392.54 32504.24 3.22 lø5-13 3731.21
Sitê 1 I 391 5.69 ?F2 5360.10 o.50 5360.43 1800.91 26.48 ua6a_43 5-0!1935.13 1 945.1 3 3731.21 3741.21
A-29
Element Lett OB Riqht OBChannelE.G. Elev (ft)
VelHead (ft)0.19
5412.53
Wt. n-Val.0.070 0.035 0.070
W.S. Elev (ft)54't2.34 Reach Len. (ft)1356.00 1251.50 946.00
CritW.S. (ft)Flow Area (sq ft)3867.087426.19 2950.85
E.G. Slope (ft/ft)0.000840 Area (sq ft)7426.19 2950.85 3867.08
Q Total (cfs)34900.00 Flow (cfs)7034.9013121.90 14743.20
Top Width (ft)2641.05 Top Width (ft)1523.66 360.1 7 757.21
VelTotal (ff/s)2.45 Avo. Vel. (ft/s)1.77 5.00 1.82
Max Chl Dpth (ft)8.34 Hydr. Depth (fr)4.87 8.19 5.1't
Conv. Total (cfs)1204513.0 Conv. (cfs)452879.5 508836.0 242797.4
Lensth Wtd. (ft)1240.36 Wetted Per. (ft)1525.06 360.49 760.22
Min Ch El(ft)5404.00 Shear (lb/sq ft)0.26 0.43 0.27
Alpha 2.06 Stream Power (lb/ft s)0.45 2.14 0.49
Frctn Loss (ft)1.69 Cum Volume (acre-ft)2226.7'.!1240.51 87.86
C&ELoss(fr)0.11 Cum SA (acres)715.86 300.03 20.12
Floodplain Engineering Report - Appendix A
Plan 1 Colorado River $ite 1 RS: 30902.14 Profllê: PF I
Plan:I Colorado River Site I RS: 29650.64 Profile: PF 1
Plan: FwayMl Colorado River Site I RS:29500 BR U Profile: PF I
May 2ú22
E.G. Elev (ft)5410.73 Element Left OB Channel Right OB
Vel Head (ft)1.31 Wt. n-Val.0.035
W.S. Elev (ft)5409.43 Reach Len. (ft)10.00 10.00 10.00
CritW.S. (ft)5406.35 Flow Area (sq ft)3806.14
E.G. SloÞe (ftlft)
Q Total (cfs)
0.002587
34900.00
Area (sq ft)
Flow (cfs)
3806.14
34900.00
Top Width (ft)431.69 Top Width (ft)431.69
VelTotal (fr/s)9.17 Avs. Vel. (ft/s)9.17
Max Chl Doth (ft)9.42 Hydr. Depth (ft)8.82
Conv. Total (cfs)686135.0 Conv. (cfs)686135.0
Lenoth Wtd. (ft)10.00 Wetted Per. (ft)435.00
Min Ch El(ft)5400.00
Alpha 1.00
Frctn Loss (ft)0.03
Shear (lb/sq ft)
Slfg1 Power (lb/ft s)
Cum Volume {acre-ft)2111.12 45.87
1.41
12.96
1143.44
C&ELoss(ft)0.05 Cum SA (acres)692.14 288.66 11.90
E.G. Elev (ft)5410.65 Element Left OB Channel Rloht OB
Vel Head (ft)1.47 Wt. n-Val.0.035
W.S. Elev (fr)5409.1 I Reach Len. (ft)195.00 195.00 195.00
CritW.S. (ft)5406.53 Flow Area (sq ft)3593.37
E.G. Slope (fr/fr)0.003543 Area (sq ft)3593.37
Q Total (cfs)34900.00 Flow (cfs)34900.00
Top Width (ft)418.62 Top Width (ft)418.62
Vel Total (ft/s)9.71 Avs. Vel. (ftls)9.71
Max Chl Dpth (ft)9.19 Hydr. Depth (ft)8.58
Conv. Total (cfs)586297.9 Conv. (cfs)586297.9
Lensth Wtd. (ft)195.00 Wetted Per. (ft)476.94
Min Ch El(ft)5400.00 Shear (lb/sq fr)1.67
AlPha 1.00 Stream Power (lbrfr s)16.19
l-rctn Loss (tt)0.93 Cum Volume (acre-ft)2',t11.12 'l'142.59 45.87
C&ELoss(ft)0.21 Cum SA (acres)692.'t4 288.56 11.90
A-30
E.G. Elev (ft)5409.51 Element Left OB Channel Right OB
Vel Head (ft)2.16 Wt. n-Val.0.070 0.035
W.S. Elev (ft)5407.36 Reach Len. (ft)18.02 18.02 18.02
CritW.S. (ft)5406.35 Flow Area (sq ft)2.15 2962.49
E.G. Slope (ft/ft) 0.006792 Area (sq ft)2.15 2962.49
Q Total (cfs)34900.00 Flow (cfs)0.75 34899.26
Top Width (ft)461.09 Top Width (ft)27.69 433.40
Vel Total (fUs)11.77 Avq. Vel. (ft/s)0.35 1'1.78
Max Chl Dpth (ft)7.36 Hydr. Depth (ft)0.08 6.84
Conv. Total (cfs)423488.1 Conv. (cfs)9.0 423479.0
Length Wtd. (ft)18.02 Wetted Per. (ft)27.87 479.50
Min Ch El (ft)5400.00 Shear (lb/sq ft)0.03 2.62
Alpha 1.00 Stream Power (lb/ft s)0.01 30.86
Frctn Loss (ft)0.r5 Cum Volume (acre-ft)2111.12 1127.92 45.87
C&ELoss(ft)0.23 Cum SA (acres)692.08 286.65 11.90
Floodplain Engineering Report - Appendix A
Plan 1 Colorado River Site 1 RS: 29500 BR D Profile: PF 1
Plan:Colorado River Site 1 RS: 29427.62 Profile: PF I
Plan 1 Colorado River Site 1 RS: 27494.84 Profile: PF 1
May 2A22
E.G. Elev (ft)5409.13 Element Left OB Channel Right OB
VelHead (ft)2.94 Wt. n-Val.0.035
W.S. Elev (ft)5406.19 Reach Len. (ft)1 192.00 1932.78 2126.00
CritW.S. (ft)5406.1 I Flow Area (sq ft)2538.02
E.G. Slope (fUft)0.010048 Area (sq ft)2538.02
Q Total (cfs)34900.00 Flow (cfs)34900.00
Top Width (ft)435.29 Top Width (ft)435.29
Vel Total (fVs)13.75 Avg. Vel. (ft/s)13.75
Max Chl Dpth (ft)6.19 Hydr. Depth (ft)5.83
Conv. Total (cfs)348159.0 Conv. (cfs)348159.0
Lensth Wtd. (ft)1822.27 Wetted Per. (ft)436.98
Min Ch El(ft)5400.00 Shear (lb/sq ft)3.64
Alpha 1.00 Stream Power (lb/ft s)50.1 0
Frctn Loss (ft)6.32 Cum Volume (acre-ft)2111 .11 1126.78 45.87
C&ELoss(ft)1.27 Cum SA (acres)692.07 286.47 1r.90
E.G. Elev (ft)5400.76 Element Left OB Channel Risht OB
Vel Head (ft)0.39 Wt. n-Val 0.070 0.035 0.070
W.S. Elev (ft)5400.36 Reach Len. (ft)1 158.00 1239.23 1263.00
CritW.S. (ft)Flow Area (sq ft)4861 .1 6 4177.35 18.47
E.G. Slope (fUft)o.o0't737 Area (sq ft)4861.16 4177.35 18.47
Q Total (cfs)34900.00 Flow (cfs)10420.06 24453.99 25.95
Top Width (ft)1988.92 Top Width (ft)1287.13 693.72 8.07
Vel Total (ft/s)3.85 Avq. Vel. (ftls)2.14 5.85 1.41
Max Chl Dpth (ft)6.45 Hydr. Depth (ft)3.78 6.02 2.29
Conv. Total (cfs)837333.6 Conv. (cfs)250001.9 586709.1 622.6
Length Wtd. (ft)1214.72 Wetted Per. (ft)1289.08 694.24 9.23
Min Ch El (ft)5394.00 Shear (lb/sq ft)0.41 0.65 0.22
Alpha 1.71 Stream Power (lblft s)0.88 3.82 0.30
Frctn Loss (ft)2.95 Cum Volume (acre-ft)2044.60 977.80 45.42
C&ELoss(ft)0.03 Cum SA (acres)674.46 261.42 11.70
A-31
E,G. Elcv (ft)5397.78 Element Lêft OB Channêl Rl0ht oB
Vel Head (ft)0.71 Wt. n-Val.0.070 0.035
W.S. Elev {fr)5397.07 Reach Len. (fi)1050.00 1 036.1 5 981.00
CritW.S. (ft)Flow Area (sq ft)4547.55 3056.94
E.G. Slope (ftlft)0.003637 Area (sq ft)4547.55 3056.94
Q Total (cfs)34900.00 Flow (cfs)10650.84 24249.15
Top Width (ft)2396.30 Top Width (ft)1836.46 559.84
VelTotal (ft/s)4.59 Avq. Vel. (fUs)2.34 7.93
Max Chl Dpth (ft)6.54 Hydr. Dêpth (ft)2.48 5.46
Conv. Total (cfs)578683.9 Conv. (cfs)176603.8 402080.1
Length Wtd. (ft)1035.12 Wetted Per. (ft)1837.77 560.58
Min Ch El (fr)5390.53 Shear (lb/sq ft)0.56 1.24
Alpha 2.16 Stream Power (lblft s)1.32 9.82
Frctn Loss (ft)4.10 Cum Volume (acre-ft)1919.54 874.90 45.16
C&ELoss(ft)0.05 Cum SA (acres)632.94 243.55 11.58
Floodplain Enginecring Report - Appendix A
Plan:1 Colorado River Site I RS: 26255.81 Profile: PF 1
Plan:1 Colorado River Site I RS: 25219.46 Profile: PF 1
Plan:1 Colorado River Site 1 RS: 24101.01 Profile: PF 1
May 2022
E.G. EIev (ft)5393.63 Element Left OB Channel Right OB
Vel Head (ft)0.54
W.S. Elev (ft)5393.09
Wt. n-Val.
Reach Len. (ft)
0.070
1167.00
0.035
1118.45
0.070
1053.00
CritW.S. (ft)Flow Area (sq ft)3547.71 2196.65 191s.77
0.004325 Area (sq fr)3947.71 2196.65 1915.77E.G. Slopg (fUft)_
Q Total (cfs)34900.00 Flow (cfs)11015.23 17142.44 6742.32
Top Width (ft)2481.76 Top Width (ft)1534.07 469.76 477.93
VelTotal (fVs)4.33 Avs. Vel. (fUs)2.79 7.80 3.52
Max Chl Dpth (ft)7.09 Hydr. Depth (ft)2.57 4.68 4.01
Conv. Total (cfs)530694.'l Conv. (cfs)167499.'1 260670.3 102524.6
Lensth Wtd. (ft)1129.40 Wetted Per. (ft)1535.65 470.06 478.59
Min Ch El(ft)5388.00 Shear (lb/sq ft)0.69 1.26 1.08
Alpha 1.85 Stream Power (lb/ft s)1.94 9.85 3.80
Frctn Loss (ft)3.39 Cum Volume (acre-ft)1817.15 812.41 23,58
C&ELoss(ft)0.07 Cum SA (acres)592.32 231.35 6.20
E.G. Elev (fr)5390.1 I Element Left OB Channel Risht OB
Vel Head (ft)0.31 Wt. n-Val.0.070 0.035 0.070
W.S. Elev (ft)5389.86 Reach Len. (ft)1473.00 1412.79 1111.00
CritW.S. (ft)Flow Area (sq fr)6950.58 3812.73 3.74
E.G. Slope (fUft)0.002201 Area (sq ft)6950.58 3812.73 3.74
Flow (cfs)13817.05 21079.60 3.36Q Total (cfs)
Top Width (ft)
34900.00
3290.17 Top Width (ft)2463.58 822.80 3.79
Vel Total (ft/s)3.24 Avs. Vel. (fVs)1.99 5.53 0.90
Max Chl Dpth (ft)6.11 Hydr. Depth (ft)2.82 4.63 0.99
294508.8 449309.1 71.5Conv. Total (cfs)
Lensth Wtd. (ft)
743889.4
1444.67
Conv. (cfs)
Wetted Per. (ft)2464.64 824.45 4.37
Min Ch El(fr)5383.97 Shear (lb/sq ft)0.39 0,64 0.12
Alpha 1.91 Stream Power (lblft s)0.77 3.51 0.11
Frctn Loss (ft)4.42 Cum Volume (acre-ft)1671.17 735.26 0.38
Cum SA (acres)538.77 214.75 0.38C&ELoss(fi)0.00
A-32
Left OB Channel Risht OBE.G. Elev (ft)5385.76 Element
Wt. n-Val.0.070 0.035 0.070Vel Head (ft)0.33
1763.00 19s7.55 2135.00W.S. Elev (ft)5385.43 Reach Len. (ft)
Flow Area (sq ft)8428.58 1688.44 1.39CritW.S. (ft)
8428.s8 1688.44 1.390.004527 Area (sq ft)E.G. Slope (fVft)
Flow (cfs)23165.64 11732.96 1.40Q Total (cfs)34900.00
3208.84 444.13 1.593654.56 Top Width (ft)Top Width (ft)
Avq. Vel. (fVs)2.75 6.95 1.00Vel Total (fVs)3.45
3.80 0.885.43 Hydr. Depth (ft)2.63Max Chl Dpth (ft)
Conv. (cfs)344303.6 174383.3 20.8Conv. Total (cfs)518707.7
2.371819.93 Wetted Per. (ft)3211.26 444.98Length Wtd. (ft)
0.74 1.07 0.17Min Ch El (ft)5380.75 Shear (lb/sq ft)
0.17Stream Power (lb/ft s)2.O4 7.45Alpha1.79
1411.14 646.05 0.32Frctn Loss (ft)6.45 Cum Volume (acre-ft)
Cum SA (acres)442.86 194.21 0.31C&ELoss(ft)0.04
Floodplain Ëngineering Report - Appendix A
Plan 'l Colorado River Site I RS: 22688.22 Profile: PF 1
Plan:Colorado River Site I RS: 20730.67 Profile: PF 1
Plan:I Colorado River Site 1 RS: 19398.23 Profile: PF'1
\liay 2022
Left OB Channel Risht OBE.G. Elev (ft)5379.28 Element
Wt. n-Val.0.070 0.035 0.070Vel Head (ft)0.19
1332.44 1200.005379.09 Reach Len. (ft)1430.00W.S. Elev (ft)
9719.50 167s.51 1.65CritW.S. (ft)Flow Area (sq ft)
1675.51 1.650.002846 Area (sq ft)9719.50E.G. Slope (fUft)
26213.27 8685.40 1.33Q Total (cfs)34900.00 Flow (cfs)
483.75 2.473504.97 Top Width (ft)3018.75Top Width (ft)
2.70 5.18 0.80Vel Total (fVs)3.06 Avg. Vel. (fVs)
0.677.09 Hydr. Depth (ft)3.22 3.46Max Chl Dpth (ft)
491346.7 '162800.9 24.9Conv. Total (cfs)654172.5 Conv. (cfs)
Wetted Per. (ft)3020.93 483.92 2.75Length Wtd. (ft)1408.01
0.57 0.62 0.115374.88 Shear (lb/sq ft)Min Ch El (ft)
Stream Power (lb/ft s)1.54 3.'19 0.09Alpha1.30
1043.89 570.47 0.243.62 Cum Volume (acre-ft)Frctn Loss (ft)
Cum SA (acres)316.84 173.36 0.21C&ELoss(ft)0.02
Channel Riqht OB5375.64 Element Left OBE.G. Elev (ft)
0.070 0.035 0.070Vel Head (ft)0.12 Wt. n-Val
Reach Len. (ft)1603.00 1689.97 1773.00W.S. Elev (ft)5375.52
11872.55 1707.28 1.89Flow Area (sq ft)CritW.S. (ft)
Area (sq ft)11872.55 1707.28 r.89E.G. Slope (fUft)0.002332
7043.32 1.5634900.00 Flow (cfs)27855.12Q Total (cfs)
3423.79 597.33 1.80Top Width (ft)4022.92 Top Width (ft)
0.83Avs. Vel. (fVs)2.35 4.13Vel Total (fVs)2.57
3.47 2.86 1.05Max Chl Dpth (ft)7.52 Hydr. Depth (ft)
Conv. (cfs)576837.4 145856.6 32.3Conv. Total (cfs)722726.4
598.09 2.611627.56 Wetted Per. (ft)3428.88Length Wtd. (ft)
0.50 0.42 0.11Min Ch El(ft)5372.00 Shear (lb/sq ft)
0.091.19 Stream Power (lbfft s)1.18 1.71Alpha
689.47 5'18.73 0.19Frctn Loss (ft)3.64 Cum Volume (acre-ft)
Cum SA (acres)211.09 156.82 0.15C&ELoss(ft)0.01
A-33
E.G. Elev (ft)5372.00 Elenrent Left OB Ch¿rrnel Risht OB
Vel Head (ft)0.20 Wt. n-Val.0.070 0.035 0.070
W.S. Elev (ft)5371.79 Reach Len. (ft)2036.00 1873.91 2008.00
CritW.S. (ft)Flow Area (sq ft)8368.25 2601.75 2.56
E.G. Slope {ftlft)0.002145 Area (sq ft)8368.25 2601.75 2.56
Q Total (cfs)34900.00 Flow (cfs)2.O122240.22 12657.77
Top Width (ft)2550.16 Top Width (ft)1880.86 667.70 1.60
Vel Total (fr/s)3.18 Avq. Vel. (fUs)0.792.66 4.87
Max Chl Dpth (ft)7.76 Hydr. Depth (ft)4.45 3.90 1.60
Conv. Total (cfs)7s3635.3 Conv. (cfs)480258.2 273333.6 43.4
Length Wtd. (ft)1933.26 Wetted Per. (ft)1882.44 668.37 3.57
Min Ch El (ft)5366.00 Shear (lb/sq ft)0.60 0.52 0.10
Alpha 1.29 Stream Power (lb/ft s)1.58 2.54 0.08
Frctn Loss (ft)5.87 Cum Volume (acre-ft)317.04 435.14 0.10
C&ELoss(ft)0.03 Cum SA (acres)113.49 132.29 0.08
Floodplain Engineering Report - Appendix A
Plan Colorado River Site 1 R5: 17700.26 Profllê: PF 1
Plan:1 Colorado River Site 1 RS: 15834.35 Profile: PF 1
Plan: FwayMl Colorado River Site 1 RS: 13915.69 Profile: PF 1
May 2rJ22
E.G. Elev (ft)5366.09 Element Left OB Channel Risht OB
Vel Head (ft)0.50 Wt. n-Val.0.070 0.035
W.S. Elev (ft)5365.59 Reach Len. (ft)2339.00 1918.66 1085.00
CritW.S. (ft)Flow Area (sq ft)1638.93 5324.94
E.G. Slope (fUft)
Q Total (cfs)
0.004620
34900.00
Area (sq ft)
Flow (cfs)
1638.93
3317.35
5324.94
31582.65
Top Width (ft)2814.29 Top Width (ft)1009.03 1805.26
VelTotal (fVs)5.01 Avs. Vel. (ft/s)2.02 5.93
Max Chl Dpth (ft)3.68 Hydr. Depth (ft)1.62 2.95
Conv. Total (cfs)513440.2 Conv. (cfs)48804.0 464636.2
Length Wtd. (ft)1953.01 Wetted Per. (ft)1009.59 1807.21
Min Ch El(ft)
Alpha
Frctn Loss (ft)6.10
5361.91
1.28
Shear (lb/sq ft)
lJ¡eam Power (lb/ft s)
Cum Volume {acre-ft)
0.47
0.95
83.1 8
0.85
5.04
264.64 0.04
C&ELoss(ft)0.05 Cum SA (acres)45.95 79.09 0.05
E.G. Elev (ft)5359.94 Element Left OB Channel Rioht OB
VelHead (ft)0.34 Wt. n-Val.0.070 0.035 0.070
W.S. Elev (ft)5359.60 Reach Len. (ft)
CritW.S. (ft)5358.1 0 Flow Area (sq ft)1459.11 6691.67 3.55
E.G. Slope (fUfr)0.002251 Area (sq ft)1459.11 6691.67 3.55
Q Total (cfs)34900.00 Flow (cfs)2392.54 32504.24 3.22
Top Width (ft)2492.14 Top Width (ft)702.41 1786.08 3.65
Vel Total (ft/s)4.28 Avs. Vel. (fl/s)'1.64 4.86 0.91
Max Chl Dpth (ft)5.91 Hydr. Depth (ft)2.08 3.75 0.97
Conv. Total (cfs)735527.1 Conv. (cfs)50423.4 685035.7 67.9
Length Wtd. (ft)Wetted Per. (ft)702.45 1787.'t4 4.16
Min Ch El(ft)5353.69 Shear (lb/sq ft)0.29 0.53 o.12
Alpha 't.21 Stream Power (lblft s)0.48 2.56 0.'t1
Frctn Loss (tt)Cum Volume (acre-ft)
C&ELoss(ft)Cum SA (acres)
A-34
Floodplain Engineering Report - Appendix A\i'ay 2022Colorado River Plan: 1) Existing2 511412020 2) FwayMl 911412020.07.03502000LegendEGPF2-FwayMlWSPF2-FwayMlEG PF'l - Existing2EGPFl-FwayMlWSPFl-Existing2WSPFl-FwayMlCritPF2-FwayMlGritPFl-FwayMlCritPFl-Existing2GroundaBank StaEncroachment1 000(ft)30004000A-35
Floodplain Engineering Report - Appendix AMay 2O22Colorado River Plan: 1) Existing2 511412020 2) FwayMl 911412020.07.035.0754'l5454154154102000LegendEGPF2-FwayMlWSPF2-FrvaytllEGPFl--wayM1EGPFl-Exbting2WSPFl-FwayMlWSPFl-Existing2GroundoBank StaEncroâchmert50010001500(ft)250030003500A-36
Floodplain Engineering Report - Appendix AMay 2422Colorado River Plan: 1) Existing2 511412020 2) FwayMl 911412020.07.03507541u5415410800LegendEGPFl-Existing2EGPFl-FwayMlEGPF2-FwayMlWSPFl-FwayMlWSPFl-Existing2WSPF2-FwayMlCritPFl-Existing2CritPFl-FwayMlCritPF2-FwayMlGroundaBank Sta200400600(ft)1 00012001400A-37
Floodplain Engineering Report - Appendix A\Aay 2022Colorado RiverPlan: 1) Existing2 511412020 2) FwayMl 911412020l-70 Bridge over Colorado River.47.035.o7LegendEGPF2-FwayMlEGPFl-Existir¡g2EG PF'1 - FwayMlWSPF2-Fwayl/1WSPFl-Fwayl/1541WSPFl-Existing2CritPFl-Existirg2.-----...*--.---¡-.---...--.... -....CritPFl-FwayMl.-*-'. "----"-?" --. '"..*- -.-CritPF2-FwayMlGroundaBank Stag: 5410800200400600(ft)I 00012001400A-38
Floodplain Engineering Report - Appendix A\/'ay 2022Colorado River Plan: 1) Existing2 5l'1412020 2) FwayMl 911412020l-70 Bridge over Colorado River.07.035.0754154il145415410800LegendEGPFl-Existing2EGPFI-FwayMlÊGPF 2 - FwayMlWSPFl-Existing2WSPFl-FwayMlWSPF2-FwayMlCritPFl-FwayMlCritPF2-FwayMlCritPFl-Existing2GroundaBank StaEncroachment200400600(ft)I 00012001400A-39
Floodplain Engineering Report - Appendix AMay 2O22Colorado River Plan: 1) Existing2 511412A20 2) FwayMl 911412020.o7.035.o7541il125410800[¡gendEGPFl-ExistirB2EGPFl-FwaylrllEGPF2-FwayMlWSPFl-Fwaylll..............................¿.............-.-... ......CritPFl-FwayMlWSPF2-FwayMl'..'. ----------- ? --..- --...--'-C¡itPF 2 - FwayMlCritPFl-Existing2WSPFl-Existirg2GroundaBank Sta200400600(ft)I 00012001400A-40
Floodplain Engineering Report - Appendix AMay 2422Colorado River Plan: l) Existing2 511412020 2) FwayMl 911412020.0703507540LegendEGPF2-FwayMlWSPF2-FwayMlEGPFl-Existing2EGPFl-FwayMlWS PF 'l - Existing2WSPFI-FwayMlGroundoBank StaEncroachment5001 000(ft)1 50020002500A-41
Floodplain Engineering Report - Appendix AMay 2422Colorado River Plan: 1) Existing2 511412020 2) FwayMl 911412020.07.035.0702000LegendEGPF2-FwayMlEGPFI-Existirg2EGPFl-FwayMlWSPF2-FwaylJlWSPFl-Ëxisting2WSPFl-FwaylVllGroundoBank StaEncroachment5001000I 500(ft)250030003500A-42
Floodplain Engineering Report - Appendix A$llay 2022Colorado River Plan: 1) Existing2 5114l2O2O 2) FwayMl 911412020.07035.0754102000LegendEGPF 2 - FwayMlEGPFl-Existing2EGPFl-FwayMlWSPF2-FwayMlWSPFl-Existing2WSPFl-FwayMlGroundOBank StaEncroachment1000(ft)30004000A-43
Floodplain Engineering Report - Appendix AMay 2022Colorado River Plan: 1) Existing2 511412020 2) FwayMl 911412020.07.035.07legendEGPF2-Fwayi/1WSPF2-FwayùllEGPFl-FwayMlEGPFl-Existirg2WSPFl-Fwayl/1WSPFl-Existing2GroundaBank StaEncrcachment5410I 0002000(ft)300040005000A-44
Floodplain Engineering Report - Appendix AMay 2022Colorado River Plan: 1) Existing2 511412020 2) FwayMl 911412020.07.035.075403000LegendEGPF2-FwayMlWSPF2-FwayMlEGPFl-FwayMlEGPFI-Existing2WSPFl-Existing2WSPFl-FwayMlGroundaBank StaEncroachment10002000(ft)400050006000A-45
Floodplain Engineering Report - Aopendix AMay 2022Colorad¡ River Plan: 1) Existing2 511412020 2)FwayMl 91141202007.035 .07LegendEGPF2-FwayMlWS PF 2 -FwaylÅ1EGPFI-Existirg2EGPFl-FwayMlWS PF'1 - Existing2WSPFl-FwayMlGroundaBank StaEncroachment03000(ft)5340I 0002000400050006000A-46
Floodplain Engineering Report - Appendix AMay 2022Colorado River Plan: 1) Existing2 511412020 2) FwayMl 911412020.07.035.0754104000LegendEGPF2-FwayMlWSPF2-FwayMlEGPFl-Existing2EGPFI-FwayMlWSPFl-Existing2WSPFl-FwayMlGroundaBank StaEncroachment100020003000(ft)500060007000A-47
Floodplain Engineering F.eport - Appendix AMay 2022Colorado River Plan: 1) Existing2 511412020 2)FwayVl 911412020.07.035 .07EGPF 2 - FwayllllWSPF2-FwayülEG PF'l - Existirg2EGPFl-Fwayül1WSPFl-Existing2WSPFI-FwayMlGroundoBank StaEncroachment04000Legend1 00020003000(ft)500060007000A-48
Floodplain Engineering Report - Appendix AMay 2022Colorado River Plan: 1) Existing2 511412020 2) FwayMl 911412020.07.0350LegendEGPF 2 - FwayMlEGPFl-Existing2EGPFl-FwayMlWSPFl-Existing2WSPFl-FwayMlWSPF2-FwayMlGroundaBank StaEncroachment10002000(fr)300040005000A-49
Revised Floodploin Development Permit Norrotive for Rifle Pit # 1 August 2022
Attoch ent c
Warranty Deed
Title Agreement
Statement of Authority
Certification of Mineral Ownership Research
Neighbor Mailing List
Letter of Authorization
Point of Contact at IHC-Scott
ctt
92ı393 0911tr2019 01:41:05 PM Page I of 6
Jean Alþerico, Garlield County, Colorado
Rec Fee: $38.00 Doc Fee: $270,00 eRecorded
Rccording Rcqucstcd By Ånd
lVhen Rccorded ltail Tot
M¿rk.A. Me¡'cr, Esq.
Hoffinan Nies Dtve & Mcycr LLP
t350 S. Roslyn Streel, Suite 100
l)envcr, CCI 801I I
GE:IERAL WÀRRTTNTY DEED ,
TI"IIS GENERÅL WÂRfu\NTY ÐEEÐ is d¡ted as of Scptember / 3, 2019, belwc*n
I,iÂLONE RÂ,\¡CH, LLC, a Colora*o limitcd liability comp¡rny: ¡rntl R & B R¡\NCI'I, I,LC, u
Colorudo limitcd liability compûny {collcctivcly, "Gnntoi'), a¡¡¿ SCOTT CONÏRÂCTINü,
trNC", a Colorado coqporation ('Gnrntce], whosc add¡ess is 9200 E. Minerrl Avcnuc, #{00,
Centennial, Colorado 80 1 12.
Wl'l'NÊSS, thut Grantor, for and in con*idcration of thc sum cf Tcn Doll¿rs ($10"0Û) eurd
othcr good and valuåblc eonsidcration, thc reccipt arrd sufüciency of which is bcrcby
acknorvlcdged, has granted, bargaincd, ¡old and convcycd, and by thcsc pluscnts docs gra$t,
bargain, selt, convey a¡rd confirm unto Õrantes, its successors and assigns forct'c.r, all of that
certain real prcpcrry in thc Counqv of Garñcld, Statc of Colorado thåt is lcgally describcd on
Þxhibit A attschcd herero and incorporated hcrein by this rcfcrsnce {thc'*Pro¡rcrty"};
'fCIüETtlER \¡rith ail and singutar of (ira¡rtor's riglrt, title and intercst in aad lo eascneüts,
rights-of-rvuy, dcvelopmcnt rightsr appurfcüå¡lccs and hcreditûm*nts appertåitdng Ío or otherrr'ise
b*neliring or usecl in connection thereof; ¡nd all water a¡ld r¡ater riglrts, all miner¡l rigltts for oil
and gas (io rtrc extent ou'ned by Crontor), and all sand, gravcl and rights in and to any sand and
graoãt lc*atcd ât, ôn or untlcr lhe Propcrly; and thc revcrsion and reversions. rem¿furder ¿nd
iemainelers, rent$, i:i$ues and profîts thcrcof; ¿r¡d all lhe sstate, right, title, iRterest, claim and
denland 1çhatsscvcr Of Grantor, eithcr in l¡w or cquity, of, in snd to thc ¿bcvc'bargained Property;
Tt IIAYE ÅND TO HOLP rlre Property nnto Gr¿¡rtee, its sutxessors and assigns fbrever,
Esch ûrantor, for itsclf ¿rnd its successors and assågns, does covenant and agrce tlut it shall and
rvill rvarrant and tbr*,cr dcfend thc Propcrty in the quict zurd peaccablc possessiou by çraûtee, its
succcss$rs and a.ssigns, against ¿ll and cvcry për$on or pcrson$ wbo lawñ¡lly clalms thc rvhole o¡
¡!"ny part rhcrc,r¡l, sub¡ee: t<l thosc itsm.ç :i*l fr¡rth on Exhibla B attaehsd he¡eto and incorporated
herein.
I Signcuure frges Fe{low}
I *nii Jj't'
Datð z$
Reeording Rcqueslcd ll¡' Ånd
\Yhen llccortlcd llail'l'o:
\tark;1. $l*¡,er. [:q.
lloflhrar¡ Nics l)ar'ç & \'lc¡,cr LLI,
515{l S. Rosl¡'n Srruct, Suits l0tl
l)cnvcr. tl() !t{}l I I
Ðst$
$z
ç EN E Rr\ L \['¡l RR.¡\){'l'\' l}[El)
'l'lllS üU)-flitL\L \\¡Ål(|t.,\N'l'Y l)lil:l) is ¡i¿rtud u-s r¡l'Sr:ptcrlbcr /1, fAlÇ. bcrç,ccn
N'I,ù|,ONE llAN{'ll. LL{', ¡r (lolorado linritcel liabilitl,corÌr[]nn)'. ¡urrt lì & 11 R.'\NCI¡, Ll.Lt, a
{'al¡rr¡rln li*rited liahilit¡' ü{}r¡tFän}, icollcctivcly. "(irantor''}. and SCO'l-l' CON'|"R,,\(:'¡"1:\¡G.
INLì.. ¿r Colorado t:('lrp{}t¡¡tiort {"(ìruntec"). *'hosc *ddrcss is ÇX}û li. trlincral ¿\vcr¡ur.r. rj4{}0.
CenL:¡lnial. Colo¡ado 801 l:.
Wll-r\*[SS. thnt ürantor. hrr ant{ in considemtion of'tlre sur¡r *l'"l"elr Dr¡ll¿rr.s (Slf¡,*th and
cthcr go<.rtl ¡rn¡l v¡rhrahlc consiclcrntion. thc rccci¡rt altd sufììcienc,"- ol' *,hicl¡ is lrcrchl'
aekrtort'l*tlgeci. l¡¡.s tr¡nted. bar¡lainctl, soltl and ccnvc¡,cd. and b¡, thesc prcscnts does gñurt.
l:nrgain. scll" co¡tvel' and ct¡¡llinl¡ u¡¡to (ir¡¡ntcc, ils suuçcssors lrncl assigrrs ftrrcvcr. atl of that
t:crtain rcal propctr¡- in the C*utrty ol'(iarlìelcl, Strrte oi'('oloratkr tlr¡rt is iegnll,r" dcscrilrc¡l eln
trxl'rihi¡ ,{ ;ttt¡cl'¡e(l ltcrela and irrcor¡rcr¿rtcd hercin ll¡' this relwe¡rcc qtlrc "Pnr¡crry"};
'l'O{i¡ì"¡'ll¡1R n'ith all nnil sittgularof ürnntrr's right. titlc nncl irrtcrest ir¡ arnt tr:rrser¡¡{:¡rts,
rigltts-ul'-rvlr¡'. dcvclutlrnr'¡lt rights. np¡rrrrfcnanccs ¡¡¡lri hcrcriit¡lrrents nppelt{rining to ilr rrtlrcr*,isc
bcncfìting ¡¡r r.tscti in cc¡tnr-clion the¡eol: *¡¡d all \v&lcr ¡nct rr,¡rtcr ri-uhts. all nrineral rights fbr oil
;rntl gas {Ìo thc c}itrttt o\\'tlcd Lr,r' (iriurlor}. ¡urel *ll sarril. gmr,el nnd rights in ;¡ncl to i¡n}' sanc'l atrd
gruvr"'l l¡lc;¡t{ql itt, o¡ì or t¡ndcr thc l'rapert¡': rucl the rer,*rsion a¡rd reversicrrs. rcnraindcr ;url
rs:nai¡¡rlcrs. rulìts. isst:cs lrntl pnrtrls tlrcrcol'l ;tnd all lhe ilstatc. tight. ritlc. intrtrc.sl. rluiln ¡rr¡et
ricrn¿r¡¡¿l *,hûlsn¡i\,er rJ'{ìr:urtor, cithcr in larv or r:rlr¡it},, ot-. in n¡rd to {he al:ove-llar¡¡;rilterl l¡ro¡rurt¡,:
'¡'(¡ ¡1.'\Vl: ÅNl) l'(] I ¡ot.D tlt* Pr*¡xrtv r¡nlo {irnnL:c" its sr¡c,ccssür's a¡rd assigns lìrrcl'er.
lj¿clr (ir'¡lltor. lnr itscll'¿r¡td its succùs-tors ¡¡r¡d rsrigns. drres cûr'ctrnnt and ågrec th¡t it sh¡ll ¡r¡¡tl
ri-ill rt'arra¡u antl firrr:r'er dct'*ntl thc l'ropcrt¡ ir: thc quiet irntl Fl¡ct:nlrlc posscssion L.:¡, Crantce. its
TllrJcçs$ors und :tssigtts, ag*inst ¡ll ;¡nel everT ¡rer"\.)¡ì *r p{r}ü}Ì¡}i *'hn lau,li¡ll¡, ,;lainrs the lvh*lç *1,
lrl:' l!ilrt lheru*l-. st¡tl.irct tc thase itenr* s*t tilrtlt o¡r l:rhibit ll :rllaclrcd hercro anrl ine*r¡:cnrtcd
hcr:in.
'ffi 6*aluroYa
;:: i
f.Tigartlm'r, Prrgi:,i l:oÍ îov' J
It\i $lI'NliSS \VltHRllOIr, thc unrlersigncd hus exæut<xl this General \Vananly llecd on
behalf of Granlor as of the date lìnst above written.
MALONË I{ÂNCI{, I..I,C,
a Colo¡ado linrited liabiliry cstrìp¡uly
¿-
Sidney I its Manager
sr,u.Ë or J[issiscipßi
Cí)IJNTY or Lrnar
ïhe l'uegoing instrurneRt r\Jas acknowledged trelbre me this I lå .tny of $cpte mbcr, 20 I 9.
by Sidney H. L'lalone. as Manager of lvfalone lìa¡rch. l-1.C, ¿ tlolor:ado li¡nite¿l liability cCImpùny.
)
)
l
I seel
By
N
ss
$fitncss m¡'
lnfy
a
a
aI
a
,}
N WI'["Ì\IESS \YIìEREOF. tlre undersigned has execr¡ted this üeneral Warranty Deed on
buhalf of $nmtor $s of the dare first above rwittcn.
R &, 8 R{NCII, LLC,
a Colorado limited liability cCImpåny
.,By
McC l, its Manager
s"ralli or.lhi{s¡g1g¡
CoIJNT'Y or l^anar
'l"he ferregoing instrument wås acknCIwledgcd befbre me rhis llt*u,V ol Scprcrnber.20l9.
by Robert l¡. McConnelt, as Manager of R & B llanch, LLLì, a Coloradcl limited liability company,
Witncss rny hand ancloflÌcinl scal.
-J" t ûtr
*o(îÞ't'u6Jls I
l
)
)
ss:
N,{1,
a
3
EXHllllT ¡l
J'o (iencrnl \l'¡rrrun¡¡' Dccd
L-qsBLDç:süp"!ls!:
TÕWNSHIP S SOUTH. RANGE 92 \ñ/EST OF THË 6TH P.M.,
SECTION I. S1l2 SW 114
SECTION 17: NE 1/4 NW 1/4 ANÐ NW l/4 NW 114
LESS AND EXCEPT¡NG THË FOLLOWING TRACTS OF LAND PRËVIOUSLY
CONVEYEÛ AND RECORDED:
1. A TRACT OF LAND LOCATED IN THE SW 1I4 SW 1/4 SECTION 8, ANÐ THE
NW1I4 NW 1/4 SECTION 1?. CONVEYED BY GEORGE YULE BY WARRANTY DEED
RECORDED APRIL 17. 1893 IN BOOK 32 AT PAGE 425.
2. A TRACT OF LAND LYING IN THE SE CORNER OF THE NE 1/4 NW 114 QF
SECTION 17 AS GRANTEO TO SCHOOL ÐISTRrcT 27 OF GARFIELD COUNTY BY
\.VARRANTY DEEü ÛATED OCTOBER 10. 18S1. RECORDED OCTOBER 12, 1891 IN
BOOK 25 AT PAGE 188
3, A TRACT OF LAND LYING f N THE SE 1/4 SW 1/4 SECTION 8, ANÐ N 1I2 N\¡/ 1/4
SECTION 17 COMPRISING ¡NTERSTATE HIGH!ryAY 70 R"O.W.. INCLUDING: THAT
PART OF THE N 1/2 NW 1I4 SECTITN f 7 CONVËYËD TO THE BOARO OF COUNTY
COMMISSIONERS CIF THE COUNTY OF GARFIELD. STATE OF COLORADO AND
STATE DEPARTMENT OF HIGHWAYS, DIVISION OF HIGHWAYS, STATE OF
COLORADO BY COURT ORDER RECORDED FEBRUARY 24,1977 IN EOOK 493 AT
PAGE 768.
4, THAT PORT¡ON OF THE NË1I4 NW1I4 AND NW1I4 NW1I4 OF SECîION 17,
TO\ÅNSHIP 6 SOUTH. RANGE 92 WEST. SITUATE SOUTHERLY OF THE
INTERSTATE H¡GHWAY 7O RIGHT OF WAY, AS CCINVEYED TO JACQUE COUEY
BURRIS BY SPECIAL WARRANTY ÐEED RECORDED OCTOBER 4, 1gg1 IN BOOK
814 AT PAGE 812.
COUNTY OF GARFIELD.
STATE OF COLORADO
4
r:XHIBT'T B
'l"r¡ (icnernl \l'rrrnnlv l)ccd
!lett¡¡itteei |rxr.ept i ons
1. TAXES AND ASSESSh4ENTS FOR THE YEAR 2019 AND SUBSËQUENT
YEARS. A LIEN, NOT YET DUE OR PAYABLE"
2, ANY AND ALL RIGHTS OF A ÞITCH COMPANY RELATING TO THE LAST
CHANCE DITCH TRAVERSING SUBJECT PROPERTY. INCLUDING BUT NOT
LIMITED TO DITCH MAINTENANCE AND ACCËSS RIGHTS TO LANDS ADJO¡NING
THE DITCH OR CANAL"
3. NOTV./ITHSTANDING THE INSURING CLAUSES OF THE POLICY, THE
COMPANY DOES NOT INSURE AGAINST LOSS OR DAMAGE BY REASON OF A
LACK OF A RIGHT OF PHYSICAL ACCESS TO AND FROM THE LAND.
4. RIGHT OF THE PROPRIETOR OF A VEIN OR LODE TO EXTRACT AND
REMOVE HIS ORE THEREFROM. SHOULN THE SAME BE FOUND TO PENETRATE
OR INTERSECT THË PREMISËS HEREBY GRANTED, AND A RIGHT OF !À/AY FOR
DITCHES OR CANALS CONSTRUCTED BY THE AUTHORITY OF THE UNITET
STATES, AS RESERVED IN UNITED STATES PATENT RECORDED MARCH 05.
1906 IN BOÛK 56 AT PAGE 537.
5. RESERVATION OF ONË.HALF INTËRËST IN ALL OIL. GAS ANÞ OTHER
MINERALS AS ËVIDENCEÞ IN INSTRUMENT RECORÐED MARCH ?7. 1972 IN
BOOK 428 AT PAGE 459, AND ANY ANO ALL ASSIGNMENTS THEREOF OR
INTERESTS THEREIN.
6. ALL OIL, GAS. HYDROCARBONS AND OTHER MINERALS. TOGETHER WITH
SO MUCH OF THE SURFACE AS MAY BE NECESSARY FOR THE CONVËNIENT
lvllNlNG oR EXTRAÇTION oF SAME. AND TOGETHËR, FURTHER, THË RIGHT oF
INGRESS AND EGRESS FOR THE PURPOSES OF PROSPECTING FOR,
DEVËLOPING AND PRODUCING SAMÊ, AS RESERVED IN INSTRUMENTS
RECORDED FEBRUARY 13, 1973 IN BOOK 440 AT PAGE 469, AND ANY AND ALL
ASSIGNMENTS THEREOF OR INTËRESTS THEREIN.
V. NO RIGHT OR RIGI.ITS OF ACCESS TO AND FROM THË HIGHWAY AS
EVIDENCED IN RULE AND ORDER RËTÜRöËü ËËBRUARY 24, 1977 IN EOOK 493
AT PAGE 768.
B. OIL AND GAS LEASË RECORDED NOVEMBER 02, 1982, IN BOOK 612 AT
PAGE 973, AND ANY AND ALL ASSIGNMËNTS THEREOF OR INTERESTS
ÏHEREIN-
5
g. RESERVATION OF ALL OIL SHALE, KEROGEN, SHALE OIL. CCIAL, OIL,
GAS, FI.SSIONABLE MATERIAL AN ALL OTHER MINERALS OF ANY KIND OR
NATURE AS EVIDENCEÐ BY SPECIAL WARRANry DEEÐ RECORDEÐ
NOVFMBER 03, 1989 IN BCIOK 766 AT PAGE 317, AND ANY AND ALL
ASSIGNMENTS THEREOF OR INTËRESTS THEREIN"
10. TERMS, CONDIT¡ONS, PROVISION$, BURDEN$ AND OBLIGATIONS AS SET
FORTH IN WATER WELL SHARING AGREEMENT RECORDED JUNE 05. 2OOg
UNDER RECEPTION NO. 769Û89.
11, ANY INORËASE OR DËCREASË IN THE AREA OF THE LAND ANÞ ANY
ADVERSE CLAIM TO ANY FORTION OF THË LAND WHICH HAS BEËN CREATED
BY OR CAUSED BY ACCRETION OR RELICTION, WHETHER NATURAL OR
ARTIFICIAL: AND THE EFFECT OF THE GAIN OR LOSS OF AREA BY ACCRETION
OR RELICTION UPON THË MARKETABILITY OF THË TITLË OF THE LAND.
12. THE FACTS. RIGHTS, INTERE.STS OR CI.A¡MS WH]CH MAY EXIST OR
ARISE BY REASON OF THE FOLLOIIVING FACT SHOWN TN ALTAINSPS LAND
TITLE SURVEY CERTIFIEÐ AUGU$T 08, 2019 PREPAREÛ BY SHAWN BINION,
P"t.s. #38200. oN EEHALF OF SGM lNC., JOB #2019-341,001:
a. FENCE LINES D0 NOT COINCIDE $llTH THË PROPERTY
BOUNDARIES
[End of Exhibit B]
6
(TD.1000)
Conllde'nl¡ûl Oocumont
Tha fom puriJo¡ cssonliùl mûrk0l lnt&mu¡üt !t tho cû$ry û*l¡q$or !û Ulour3 &ccur$0, ftjr åfld rr!¡lodm t*B08Ím0nß t0. û¡l ¡ropgrlt. Th¡t
diíirûåql i3 ri0l rsoðrdÊd. ¡ê ¡ro$l cûr**:llJ" å¡)S B û$l ¡vrl¡ü¡ lor pr¡blb tnãpocli0n
ThÞ dedÍ¡tþn nr¡¡l lr¡ aolqpldad lÈd donod bv ¡ñhor tho grrl}lr {ra&¡l or lmnrco fbúy¡4. ù.¡esio.t !. ?, 3, 5|d I t!ì$f bt
compaoîÊd lFrûl¡ffi1 by a üird party" ¡¡¡h a¡ ¡ lüG ro.r?¡nT or doclng ngant, fürlisr rvilh dotâals ôl ll* Irt lûstl¡on. Ths å¡ün&bry ôho{¡ld
confirm lcø,rrcy befura dgning.
Thê hrm ig rçq¡irtd rùfi çorvoysne{t daâtngnfs [rg pre]Hnt0d fcr rr]0orclrg, ll t]*r lom 6 nol cÕmflotüd ¡nd ¡ubmtêd, :hc ccrr.rty
8SßSÍtûr nry 36r{ noðC$. I ttlo eofiìFñ.tod snd r¡ünad l0frn ð Êot rüËr¡fûGd to ñ0 il¡!û¡¡Ê. uilh¡Þ tû düyÊ út natice, l}* €É noor tnst
¡tnpoge å pendly ol $e5.00 sr 0.S49!v' {û,ffûe5l od $rr r¡lc 0ricc. whi:ãerr*r ir grcttar.
Addtbn¡l irl0rfiûúûa ù: ãt thÊ pJrpô*€. rÊquü. tfiltn:s, åñC l6e*l ol c¿.yldånliÈlty råü$ßrt,'0 thlç lârw! åre ıulljFsl Íì Cdoråft lgt'c*d
Stell-&t ¡dio.?} $g'td.i0¿, t$.5-1?t.5. ånç S!'t3.lSA
t. Á.ðdror* mú'ct io¡al dccnþcr: ol lhê ri!&l Fropðrt!¡ rdd: Þcs!å dt n6.. uBË P.0. 8or n¡tnbe.¡
MÅtoile ñA¡¡tH, s'Lt. Ço 0r6st
t [Çcrøc*iniutn I tln*ll,unr: a* Ctorr¡rsrci¡l
Uss v¡cånl L*rN Cntst
3. û[tÊst ü06¡!rpt
Ðrtû nl Csttråçt ¡f dËory¡t thr1 dnlÊ d
,r. TûtÊ! rale trl¡e: lnelid¡n0 rJ¡ reel *rìt pe8{nål Sropoûy ¡2,¡00p0OOü
CoÞïsrtod Èice Ut dfTÈm{it kom l¡nsl $¡ls priÞo¡ 3?rtm,000,00
3. fu*l *ry porrenåi pmporT r*clud6d då thû tr*n8ag¡ûfr lhel nılffi¡¡ly flìssç!8 lh8 !û!¡rl tð¡s pfiãg. Penc*nlp*prfv rË¡)' lrÍlu#o bl¡l ,t
fltl li'ntqd lô ñaöiin0rT g tqúi}nmt wi}r:lså, çr4åplþn0l spdlnnc06. olnctranii de¡rçoÍ, furnthrrc. Ðr ütâng th*l Ðû,uld rrol
Itf¡cslv lf8Ãftrr ltllþ lhs re¡rl Falany {¡ttr¡$à iíd¡l¡}ñÍl p,lgrê¡ ¡l ñoæ¡Ë¡ryl.
ÐÈ8criûl¡oG Âæro$ms¡!É Yil,¡¿
9*ßo{€ì 9:OFcety Tgl¡l:
l'l n* pc*:;no$ Frsp+rty i9 |'lûÉ *ro srtjrt lurchlrê $nce wil be e1Ëulrtlct lo bê lor lbü rðål prctsity-
6. )d $s t#!âl t*Þ6 prc* i,ldude n trñds F r¡ch¡noÊ ol addüçri* rûÊl çr p{rr$sr¡rl ¡rroparr-* fl vor fiJ to
$
s
$
s
¡
3!¡i¡ı
lhn r*ðl prqrrÐ.puchllcd? l,{srk 'na" il ûdy ü pürtiel itl8rÊ¡{ ;{¡ lroirtü f:rÍìlrås*d
inlürgsl f¡JrrùsrrêJ:16
BurdËç ifi rtfi ËÕ{rt¡rxttiðlr}
Privsls iF*r Sale Þ¡ or,Yyrert
ñ6n{*ñ*rÌtâlir}fi,;
íl tfå. o..lû f¡t a¡tFfürlmût6 I'nÞô ol ll'€ goodÊ or Ëorvloor ¡¡Ê ol lhc dnlË ü! dÕ{¡nû.
tt'fÊr, dlts lti¡s tràngictsr .firdv* s T&d*:¡ndec l3S ç*dç Soühn t0ût? C Ysa
W*r'10il'*. rllorÈlt,r:
Elv* [ lt lt"r.
È. lr $js ¡r tr¡nsgclifrp bctá,!Ên rgþq<r<l pðrl*å *r s,t{sJthlgoc6s? ?hß rrçlúde6 fsæñs *onfrsçlåd b]'dürd or rnar4ûgë *r b,¡¡¡nq€ç
&tll*tes, ü !h&gr s¡"qJsiûtod pirr !o th6 rrrnsðcti¡n I ver ffi ruo
å, Plcn*e rrnrlt ly¡* ol :;rX;
fi
r0. Cùtt( åny 0l üó l0lqfiinû lhål åpdy 1ç fr¡ arrnCûon of frs çnpto.srnûnÎß ði th$ l¡mn cÉ pr¡rchå¡4'
E ,.o D ç*o+teo I ct*o I arweø* f] rnn Ü "or' I sar,"go
üt IlßlllilllffiIillll]lÊorm l06S chfung'roçr}fflrn0ß'rpl -eÛl9 hlml üQ$136/6 l4ä'/}9r'
at glü F.op€rty ir {r*¡rc*d. ÉFar! crrpl*lô th* tdo'tr'tt4:
od tæncrrg: {Chûc¡{ ¡ll¡ lhtl ûFF*Y}
i¡ÕnË {å¡¡€3tt or ceth €qüåñt tttJ
Ns¡$$f0€tûs L€ndff fgovgrütl0nl'b&çt$d or {t*"¡*r¡liû.tsl }nn¡( ¡08rl:
Ngü,!'Èifål0 Tllt Ptrly lñonsonvsnllûnô, k.ld*. o.9,. rdtttvo, lr4fd, or ¡rqu8ñÌðtì4cl
6ctor gb(r¡qr otÊånod ¡t lflcrtgtfln drocdy lrøt lhe 3êalürj
lLåã¡rnsd lh4s ¡¡nr¡r¡d nn Frirt'r1Í nû*qegs¡
ComLtnatjcr¡ il Õthtr: Pltaec er¡lrin
Iã, l€tåi a¡rru¡rt fintfroÈ<l
13. trnllr:
H
Vari¡lfc St¡trlins inl[r6Êt rd¡ 9f
Fixoet lr{Ëtst f8ta
Lcngtth ol lir*
Sslloofl Ptymânl
It
Yã4 l'¡o ll t0â. 6nþiJnl lt0.00 {}uç â¡l*
1 ¡¡.
ll r¡¡¡lrd. tt*rø¿ ¡p¿cily
t5 1v¡!; ¡i¡"t Íd4ci1d*nt tFlûröel ob.¡¡i¡?Ëd fl Ðffi¡$n*so r¡rill¡ tl'is lrån$åtlbir? [ vcr fJt{o
For pra¡:cs,tíns @!t thûñ raÈ¡doffjnl {Be¡lcn¡tint c d6t å{, üË: r¡nülå fûrrly JrtrıhÊd. loíynhsrB{c. ðpúûrlrÛfÎts, åñd ctñd0m¡niumð} É1tåtå
öÕrnÞlslt qucflionr t S'l t if spplcab{*. OtF*sv*8ú. sk* l0 ljg !0 comr{ste-
16. ûic dr* pw*truæ Fec€ inclt de å lrûñ.h'fs ór ¡c*ÉEå tè8? fl Var fil *o
ll yer, kanchi* ill qû8*t0 fçe var*?
l¡. ü¡d lhc pwsrt¡ð p,rcc irwch* un irslall¡lur:! ¡ûrd (*ttl!åËt? fJ Vee fil m
ll yer. drte tl coÊtrael:
l8 ll lh¡ç w¡3 å râc¡nl llnd rlle. wûr nn s¡.¡i:e in:peelon of tl* prcparry cø!ö.xtexl þ llra àuyer FiS. lt tlìÈ etÛF ìt?filvar f]t'to
flo'|.rrðr¡S. Plû6,9* lnelÃttì iñì'åddllþn$l .fì*tÍt¡ãlLlï conc{Trñôt:hs ñfl1ü yoü ñû}'racl it imF€rllr3:-
)'åvk rn7 ll.rct Êpdyi
! setie, *rgletsd 6uun rrrrtnonl
I I Sell¡r cûr¡ff6|r¡rtsHlJ $¡tectnt l¡Ìnnr ol llnnnclng
1* $lnçceñ!h.i{tûyof 1/e/ft
ilnvc *1 ol lhc pàrlieü lo
Grtn:ûsiBry*rJ
cmirTnAcll)¡ß. ll{c. A cÖLÕRÀDt
ïrolr
By:
LON SClr{rilAcr¡ER, pRE$oeMr
2û. Áll lun¡r* çt{f64FûîE OnCn {lnx b¡t*, trcpa¡ty rr*rrst}3ît. !tc.i .çg¡urjinq tllr proport¡'*oub !c r:¡¡larJ to:
9COTT CollrRÂcrlllg, lllc. A çoLoftAOO CORPORAIIOI{
!bË lrfn5ðÉôrì r6n thu
i I a, Gr¡ntorlSeltcri
{tôâfi0n|, grd *:iude sn &tdre{q sild å rtsylilìs ¡*tÔ(rs nuÛùe¡
9e0O E" till¡*EFAL AVÊ., s¡¡Oo, CtÌ'¡TgÌ'ltllÂL. CO g0¡12
Pñonr: {3O3l2t9.Ogl,0 Ëmall
trntÍcl infa¡nt*,!e* ¿ tßpt {¡ñtdttfili{l' lftl tc{.ftly A1Íes3ðf ånú ?r*ül!tåt uto oaly' tt etnrÆ' brltç¡ $äh quselþnf r**ârdñ* lfis fo'm'
|:foFc¡ty vülJllíûn, e¡t LToPa?ly l8¡( ¡tllÛ{rn8liÙo.
furm l0€8 *lornl,rcxordrlls,'rB! ãl,lg.hlr.630t36?ô {{57r97}
F LAND TITLE GUARANTEE COMPANY
LandTtte
Cl l{ nl\Tf.F |.fril¡sNT
'-.!ìir" rlft-.
Date:July 28,2022
Subject: Attached Title Policy/Guarantee
Enclosed please find your product insurlng the property located at MALONE RANCH, SILT, CO 81650.
lf you have any inquiries or require further assistance, please contact George Rietsch at (303) 850-4151 or
grietsch@ltgc.com
Chain of T¡lle Documents:
Garfield county recorded 09/13/2019 under reception no.
925393
Property lnformation Binder
CONDITIONS AND STIPULATIONS
1. Definition of Terms
The following terms when used in this Binder mean:
(a) "Land": The land described, specifically or by reference, in this Binder and improvements affixed
thereto which by law constitute real property;
(b) "Public Records"; those records which impart constructive notice of matters relating to said land;
(c) "Date": the effective date;
(d) "the Assured": the party or parties named as the Assured in this Binder, or in a supplemental writing
executed by the Company;
(e) "the Company" means Old Republic National Title lnsurance Company, a Minnesota stock company.
2. Exclusions from Coverage of this Binder
The company assumes no liability including cost of defense by reason of the following:
(a) Taxes or assessments which are not shown as existing,liens by the records of any taxing authority that' ' levies taxes or assessments on real property or by the Public Records; taxes and assessments not yet
due or payable and special assessments not yet certified to the Treasurer's office.
(b) Unpatented mining claims; reservations or exceptions in patents or in Acts authorizing the issuance
thereof; water rights, claims or title to water.
(c) Title to any property beyond the lines of the Land, or title to streets, roads, avenues, lanes, ways or
waterways on which such land abuts, or the right to maintain therein vaults, lunnels, ramps, or any
other strúcture or improvement; or any rights or easements therein unless such property, rights or
easements are expressly and specifically set forth in said description'
(d) Mechanic's lien(s), judgment(s) or other lien(s).
(e) Defects, liens, encumbrances, adverse claims or other matters: (a) created, suffered o.r agreed lo by' '
the Assured;(b) not known to the Company, not recorded in the Public Records as of the Date, but
known to the Assured as ofthe Date; or (c) attaching or creating subsequent to the Date.
3. Prosecution of Actions
2.
The Company shall have the right at its own costs to institute and prosecute any action or proceeding
or do any oth'er act which in its opinion may be necessary or desirable to establish or confirm the
matters herein assured; and the Company may take any appropriate action under the terms of this
Binder, whether or not it shall be liable thereunder and shall not thereby concede liability or waive any
provision hereof.
ln all cases where the Company does not institute and prosecute any action or proceeding, the
Assured shall permit the Company lo use, at its option, the name of the Assured for this purpose.
Whenever requested by the Company, the Assured shall give the Company all reasonable aid in
prosecuting such action or proceeding, and the Company shall reimburse the Assured for any expense
so incurred.
4. Notice of Loss - Limitation of Action
A statement in writing of any loss or damage for which it is claimed the Company is liable under this Binder
shall be furnished to the Co-mpany within sixty days after such loss or damage shall have been determined,
and no right of action shall accrué to the Assured under this Binder until thirty Qgys atter such statement shall
have been furnished, and no recovery shall be had by the Assured under this Binder unless action shall be
commenced lhereon with two years after expiration of the thirty day period. Failure to furnish the statement
of loss or damage or to commênce the action within the time herinbefore specified, shall be conclusive bar
against maintenance by the Assured of any action under this Binder.
5. Option to Pay, Settle or Compromise Claims
The Company shall have the option to pay, settle or compromise for or in the name of the Assured any claim
which could result in loss to the Assured within the coverage of this Binder, or lo pay the full amount of this
Blnder, Such payment or lender ol paymenl ol the full arnounl of the Binder shall ternlinate all liability ol lhe
Company hereunder.
6. Limitation of Liability. Payment of Loss
(a) The liability of the Company under this Binder shall be limited to the amount of actual loss sustained by
the Assured because of reliance upon the assurances herein set forth, but in no event shall the liability
exceed the amount of the liability sÌated on the face page hereof.
(b) The Company will pay all costs imposed upon the Assured in litigation carried on by the Company for
the Assured, and all costs and attorneys' fees in litigation carried on by the Assured with the written
authorization of the Company.
(c) No claim for loss or damages shall arise or be maintainable under this Binder (1) if the Company after
having received nolice of any alleged defect, lien or encumbrance not shown as an Exception or
excluded herein removes such defect, lien or encumbrance within a reasonable time after receipt of
such notice, or (2) for liability voluntarily assumed by the Assured in settling any claim or suit without
written consent of the Company.
(d) All payments under this Binder, except for attorney's fees as provided for in paragraph 6(b) thereof,
shall reduce the amount of the liability hereunder pro tanto, and no payment shall be made without
producing this Binder or an acceplable copy thereof for endorsement of the payment unless the Binder
bc lost or dcstroyed, in which case proof of the loss or destruction shall be furnlshed to the satisfactlon
of the Company.
(e) When liability has been definitely fixed in accordance with the conditions of this Binder, the loss or
damage shall be payable within thirty days thereafter.
7. Subrogation Upon Payment or Settlement
Whenever the Company shall have settled a claim under this Binder, all right of subrogation shall vest in the
Company unaffected by any act of the Assured, and it shall be subrogated to and be entitled to all rights and
remedies which the Assured would have had against any person or property in respect to the claim had this
Binder not been issued. lf the payment does not cover the loss of the Assured, the Company shall be
subrogated to the rights and remedies in the proportion which the payment bears to the amount of said loss.
The Assured, if requested by the Company, shall transfer 1o the Company all rights and remedies against any
person or property necessary in order to perfect the right of subrogation, and shall permil the Company to use
the name of the Assured in any transaction or litigation involving the rights or remedies.
8. Binder Entire Contract
Any action or actions or rights of action that the Assured may have or may bring against the Company arising
out of the subject matter hereof must be based on the provisions of this Binder. No provision or condition of
this Binder can be waived or changed except by a writing endorsed or attached hereto signed by the President,
a Vice President, the Secretary, an Assistant Secretary or other validating officer of the Company.
9. Notices. Where Sent
All notices required to be given the Company and any statement in writing required to be furnished the
Company shall be addressed to it at 400 Second Avenue South, Minneapolis, Minnesota 55401 , (612) 371-
1111.
10. Arbitration
Unless prohibited by applicable law, either the Company or the insured may demand arbitration pursuant to the
Title lnsurance Arbitration Rules of the American Arbitration Association.
ANTI-FRAUD STATEMENT: Pursuant to CRS 10-1-128(6)(a), it is unlawful to knowingly provide false,
incomplete or misleading facts or information to an insurance company for the purpose of defrauding or
attempting to defraud the company. Penalties may include imprisonment, fines, denial of insurance and civil
damages. Any insurance company or agent of an insurance company who knowingly provides false,
incomplete, or misleading facts or information to a policyholder or claimant for the purpose of defrauding or
attempting to defraud the policyholder or claimant with regard to a settlement or award payable from insurance
proceeds shall be reported to the Colorado division of insurance within the department of regulatory agencies.
This anti-fraud statement is affixed and made a part of this policy'
Copyright 2}O6-2}22American Land Title Association. All rights reserved. The use of this form is restricted to
ALTA licensees and ALTA members in good standing as of the date of use. All other uses are prohibited.
Reprinted under license from the American Land Title Association.
lssued by:
Land Tiüe Guarantee Company t'ffi
":'"..'o'.{.r1,å.hft
Ql¡ irrugur Hr{urfig ra¡ÁMfl ¿E {ffi gilf
t Ì"J¡1i r'ßrf.r'iÌ
di.l ihiir ,ìr.$ -(rr¡l ,liiil L'l*5. tíiiÈttí! !,gJl
rlå.ìlì ìíí;
-
ÀMER¡CÂN3033 East First Avenue Su¡ts 600
Denver, Colorado 80206 L,{ND TITLE
303-321-1 880 Àslocr^TloN
løfrr^í,s ffi
Craig B. Rants, Senior Vice President
Old Republic NationalT¡tle Insurance Company
PROPERTY INFORMATION BINDER
Order Number: A85630'1 9055 Policy No. : Pl8630'l 9055.22486671
Liability:
Fee:
$50,000.00
$500.00
Subject lo the exclusions from coverage, the limits of liability and other provisions of the Gonditions and
Stipulations hereto annexed and made a part of this Binder,
OLD REPUBLIC NATIONAL TITLE INSURANCE COMPANY a Corporation, herein called the Company,
GUARANTEES
IHC SCOTT, INC., A MICHIGAN CORPORATION
Herein called the Assured, aga¡nst loss, not exceeding the liability amount stated above, which the assured
shall sustain by reason of any incorrectness in the assurance which the Company hereby g¡ves that,
according to the public records as of
July 08, 2022 al5:00 P,M,
1. Title to said estate or ¡nterest at the date hereof is vested in:
IHC SCOTT, INC., A MICHIGAN CORPORATION SUCCESSOR BY MERGER TO SCOTT CONTRACTING, INC
A COLORADO CORPORATION
2. The estate or interest in the land hereinafter described or referred to covered by this Binder :
A FEE SIMPLE
3. The Land referred to in this Binder is described as follows:
TOWNSHIP 6 SOUTH, RANGE 92 WEST OF THE 6TH P.M.,
SECTION 8: S1/2 SW 1/4
SECTION 17: NE 1/4 NW 1/4 AND NW 1/4 NW 1/,4
LESS,AND EXCEPTING THE FOLLOWING TRACTS OF LAND PREVIOUSLY CONVEYED AND RECORDED:
1. A TRACT OF LAND LOCATED IN THE SW 1/4 SW 1/4 SECTION 8, AND THE NW1/4 NW 1/4 SECTION 17,
CONVEYED BY GEORGE YULE BY WARRANTY DEED RECORDED APRIL 1 7, 1 893 IN BOOK 32 AT PAGE 425.
2. A TRACT OF LAND LYING IN THE SE CORNER OF THE NE 1/4 NW 1/4 OF SECTION 17 AS GRANTED TO
SCHOOL DISTRICT 27 OF GARFIELD COUNTY BY WARRANTY DEED DATED OCTOBER 10, 1891,
RECORDED OCTOBER 12,1891 IN BOOK 25 AT PAGE 1gg.
Old Republic NationalT¡tle lnsurance Company
PROPERTY INFORMATION BINDER
Order Number: A856301 9055 Pof icy No.: Pl863019055.22486671
3. A TRACT OF LAND LYING IN THE SE 1i4 SW 1/4 SECTION 8, AND N 1/2 NW 1/4 SECTION 17 COMPRISING
INTERSTATE HIGHWAY 70 R.O,W,, INCLUDING:
THAT PART OF THE N 1/2 NW 1/4 SECTION 17 CONVEYED TO THE BOARD OF COUNTY COMMISSIONERS
OF THE COUNTY OF GARFIELD, STATE OF COLORADO AND STATE DEPARTMENT OF HIGHWAYS,
DIVISION OF HIGHWAYS, STATE OF COLORADO BY COURT ORDER RECORDED FEBRUARY 24,1977 IN
BOOK 493 AT PAGE 768.
4. THAT PORTION OF THE NE1/4NW1/4 AND NW1/4NW1/4 OF SECTION 17, TOWNSHIP 6 SOUTH, RANGE 92
WEST, SITUATE SOUTHERLY OF THE INTERSTATE HIGHWAY 70 RIGHT OF WAY, AS CONVEYED TO
JACQUE COUEY BURRIS BY SPECIAL WARRANTY DEED RECORDED OCTOBER 4, 1991 IN BOOK 814 AT
PAGE 812.
COUNTY OF GARFIELD,
STATE OF COLORADO.
4. The following documents affect the land:
1. ANY AND ALL RIGHTS OF A DITCH COMPANY RELATING TO THE LAST CHANCE DITCH TRAVERSING
SUBJECT PROPERTY, INCLUDING BUT NOT LIMITED TO DITCH MAINTENANCE AND ACCESS RIGHTS
TO LANDS ADJOINING THE DITCH OR CANAL.
2. NOTWITHSTANDING THE INSURING CLAUSES OF THE POLICY, THE COMPANY DOES NOT INSURE
AGAINST LOSS OR DAMAGE BY REASON OF A LACK OF A RIGHT OF PHYSICAL ACCESS TO AND FROM
THE LAND.
NOTE: ACCESS TO THE SUBJECT PROPERTY lS LIMITED TO THE TERMS, CONDITIONS AND
PROVISIONS OF COLORADO DEPARTMENT OF TRANSPORTATION ACCESS PERMIT NO. 320024
3. RIGHT OF THE PROPRIETOR OF A VEIN OR LODE TO EXTRACT AND REMOVE HIS ORE THEREFROM,
SHOULD THE SAME BE FOUND TO PENETRATE OR INTERSECT THE PREMISES HEREBY GRANTED,
AND A RIGHT OF WAY FOR DITCHES OR CANALS CONSTRUCTED BY THE AUTHORITY OF THE UNITED
STATES, AS RESERVED IN UNITED STATES PATENT RECORDED MARCH 05, 1906 IN BOOK 56 AT PAGE
537.
4. RESERVATION OF ONE-HALF INTEREST IN ALL OIL, GAS AND OTHER MINERALS AS EVIDENCED IN
INSTRUMENT RECORDED MARCH 27,1972IN BOOK 428 AT PAGE 459, AND ANY AND ALL
ASSIGNMENTS THEREOF OR INTERESTS THEREIN.
5. ALL OIL, GAS, HYDROCARBONS AND OTHER MINERALS, TOGETHER WITH SO MUCH OF THE
SURFACE AS MAY BE NECESSARY FOR THE CONVENIENT MINING OR EXTRACTION OF SAME, AND
TOGETHER, FURTHER, THE RIGHT OF INGRESS AND EGRESS FOR THE PURPOSES OF PROSPECTING
FOR, DEVELOPING AND PRODUCING SAME, AS RESERVED IN INSTRUMENTS RECORDED FEBRUARY
13, 1973 IN BOOK 440 AT PAGE 469, AND ANY AND ALL ASSIGNMENTS THEREOF OR INTERESTS
THEREIN.
6. NO RIGHT OR RIGHTS OF ACCESS TO AND FROM THE HIGHWAY AS EVIDENCED IN RULE AND ORDER
RECORDED FEBRUARY 24,1977 IN BOOK 493 AT PAGE Z69.
NOTE:ACCESS TO THE SUBJECT PROPERTY lS LIMITED TO THE TERMS, CONDITIONS AND
PROVISIONS OF COLORADO DEPARTMENT OF TRANSPORTATION ACCESS PERMIT NO. 320024
7. OIL AND GAS LEASE RECORDED NOVEMBER 02,1982,IN BOOK 612 AT PAGE 973, AND ANY AND ALL
ASSIGNMENTS THEREOF OR INTERESTS THEREIN.
Old Republic NationalTitle Insurance Company
PROPERTY INFORMATION BINDER
Order Number: A856301 9055 Policy No. : Pl8630 1 9055.22486671
I RESERVATION OF ALL OIL SHALE, KEROGEN, SHALE OIL, COAL, OIL, GAS, FISSIONABLE MATERIAL AN
ALL OTHER MINERALS OF ANY KIND OR NATURE AS EVIDENCED BY SPECIAL WARRANTY DEED
RECORDED NOVEMBER 03, 1989 IN BOOK 766 AT PAGE 317, AND ANY AND ALL ASSIGNMENTS
THEREOF OR INTERESTS THEREIN.
9. TERMS, CONDITIONS, PROVISIONS, BURDENS AND OBLIGATIONS AS SET FORTH IN WATER WELL
SHARING AGREEMENT RECORDED JUNE 05,2OO9 UNDER RECEPTION NO. 769089.
10. ANY INCREASE OR DECREASE IN THE AREA OF THE LAND AND ANY ADVERSE CLAIM TO ANY
PORTION OF THE LAND WHICH HAS BEEN CREATED BY OR CAUSED BY ACCRETION OR RELICTION,
WHETHER NATURAL OR ARTIFICIAL; AND THE EFFECT OF THE GAIN OR LOSS OF AREA BY
ACCRETION OR RELICTION UPON THE MARKETABILITY OF THE TITLE OF THE LAND.
NOTE:THIS BINDER DOES NOT REFLECT THE STATUS OF TITLE TO WATER RIGHTS OR
REPRESENTATION OF SAID RIGHTS, RECORDED OR NOT.
NOTE:THIS COMMITMENT lS NOT A REPORT OR REPRESENTATION AS TO MINERAL INTERESTS, AND
SHOULD NOT BE USED, OR RELIED UPON, IN CONNECTION WITH THE NOTICE REQUIREMENTS THAT
ARE SET FORTH IN CRS 24-65.5-103.
NOTE: ADDITIONAL UPDATES TO THE EFFECTIVE DATE OF THE BINDER MAY BE REQUESTED BY THE
PROPOSED INSURED. ONE UPDATE IS INCLUDED WITH THIS BINDER AT NO ADDITIONAL COST. ANY
ADDITIONAL UPDATES WILL BE ISSUED AT THE COST OF $125 PER UPDATE. FOR EACH UPDATE
PROVIDED, A REVISED BINDER WILL BE ISSUED SHOWING A NEW EFFECTIVE DATE AND ANY
MATTERS RECORDED SINCE THE EFFECTIVE DATE OF THE PREVIOUS BINDER.
THIS PRODUCT WILL ONLY BE UPDATED FOR 24 MONTHS FOLLOWING THE EFFECTIVE DATE OF THE
ORIGINAL BINDER.
llll tlþl,ltllfiT']tlt'L*l *l'l,Tl¡li'h{1"P,{i lÈi l'S'{" li lt t
Reoeptionil: Í16910
@7 l1112øi2 Ø2.:33:41 Þrl J.ea¡ì Âlb¡r.l.co1 or 1 Reå Fee:$13.9Q.qq9.Ëeq,.Q,.9p çARF¡ELE cð.UNlY c9.
5TATEMENT Of AUTTIORITY
Fursuant io C.ß.S: $38-30-1.7?,'the.undersþned executes this Stat€men!
"of
Authórity o. n åehalf qf
ll,lc soott, ino. (dba Scott' Gon.t¡-actinS, llrc" )a Coþado Ccporgt¡on_ . _. (corporatiori, limited
l¡iibitity company, general partnerrshþ, registe red li.rnited.ll¿bility parinershìp¡ regiitered limited l¡ðb¡titY
l'im ited ps ft ne rship, limlted Pa rtneiÊs h¡p assqciatibn,Eevern m ent age nt¡ .trust or other), ðÍ q ntity. othef
tha¡ an.índlvidual, capaålè of holdind tilte.tp rÊsl properfy. (!tu ufntitf), ôrrd state6 äs follows:
The nåfte of the Ëritity is'rHc lnc.-ç€ot
and is forrned ùdder the laws of
'lhe maillnþ address fioithe Eht¡tY'ü
The nårne.anifloiposition of.the pêrson.authoríZcdto è¡ecute imtrsmenls.conveylirg, oncuñheqing or
otheftuise effecrin$ ti.tle to.real píoperty on:þshaFqf the Entily is lefn of Ad¡ninigtt*tlon
T.he.limitatioss upon the zuthoriti¡gf thc.person.nâmçd.åbove or.holdïng thê positíoa described aboræ
to.binil the Entitv are es fiollsws {if no limÊtatiolts, insert'"ilone'?)NOnd
OthÊr mãRèrs.concêrning the manner in Which'thé fntity deals'*¡ith.any intarest ¡n'real proferty are {if
nootheirRatte.¿þaVethissêdbn-blank): ,, ,, ., '. ... -..'.. .... ,
EXEcUIEÐth¡, f ¡:,y'ø zq-3L.
2
Neme (prinled):
Title (if anyll
The fÞr
by
f,U.^I o5TAT.É OF'
COUNTYOF
lss
was ack¡ov¡tedge.d before rne th¡s 4* daf of
oir behalfpf
20]3
'a
witness .ny riand and *Mhg, e{My cominissioir exprrèb:
J rnut"¡ I
R¡rrucnp¡nru*c
IIOTA'{Y PT¡ELIÆ.sl¡rr orcoloRÁDo
NOTAfîr$æ10/;A1623/-
¡rY cfl tril8sþr{ ÐeiRÊt.¡{AY e&4
Garfield Coaa,ty
[sÉAL¡
iilbrary FubHc)
Garlield County
CTiRTTFICATION OF ùI¡:\¡ERAL OW¡YH,R RESEÅRCH
Thìs larm is to åe conpleted and submitted wi?h øny applicotian tar a Lond Use Chdnge Permit.
Mineral interests may be severed from surface rlght ¡nt€rests in real property. C.R.5. S 24"65.3"101, eÌ teq,
requires notification to mineral owner$ when a landowner applies for an application for development from a
local governrnent, At such, the landowner must resêarch the curent owners of mlneral interests for the
propertY.
Ihe Garfleld County Land Use and Oevelopment Code of 2013 ("LUDC"| Seclion 4"101t81(tltbXrtl requires
written notice to owners of mineratinterests in the subject property in açcordance with C"R.5. $ 24-65,5-101,
et seg, 'as tuch o$rner$ can be identified through the records in the office of the Clerk and Recorder or
Assessor. or thraugh other meãni." This form is proof of applicanfs compliance with the Colorado Revised
St¡tutes ¡nd the LUDC,
The undersigned applicant certifies that minerðl or¡yners have been researdred for the xrbject property ði
requlred puËuãnt to C,R.S. $ 24-65.5-10L, et seq,and Sectlon 4.f0f {E}(fl(bX{l of the Garfirld County lånd
Use and Oevelopment Code, as amended. ¡ a result of that res€arch, the undersigned applicant certifies
the followlng(Piease lnltlal on lhe hlønk llne next to tft€ statcmeût that accurotety rcfleas the result al
reseorchl:
-
lown the ent¡re miner¿l estðte relative to the:ubject proBerty; or
X Minerals are owned by the pårt¡er listed below
The names and addresse s of any and all mineralowners i.dentified are provided below tattach additional pðges
as nccessary):
United of
I ¿clnowledge I reviewed C.R.S. f 24-65.5-101, ef teq, and I am ln compllance wlth sald statue and thc
TUDC
l
f{ame of Mineral Ouner Malllng Addrcs¡ of Mlncral Owner
Sweenet's. lnc"Unltnown
J. Genlry. F, Gentry P,O. 6ox 1300. Rifle. Colorado 81650
Mervall Couev. Kellv Couev 6275 Co¡,¡nlv Rd. 3f 5. Silt. Colorado 81652
Nolica address unknorvn
Appllcanf* Slgnature D¡te
Zt 7 L
6t1812020 Garfield CounÇ Land Explorer
Accounl
Num Moiling Address
Garfield Gounty Land Explorer
Porcel Physicol Address Owner
217907100292 Not ovoiloble SILT
217908100527 Nol ovoiloble SILT
ISLAND PARK LLC R0243ó3
SHIDELEROSA LLLP R2309ó3
COLORADO RIVER RANCH,
LLC
R023384
REX ROBINSON RANCH LLC
&R023 I 38
scon CoNTRACTING lNc R023405
23I I MEADOWLARK LANE GLENWOOD SPRINGS, CO
8r ó0r
l4r r couNTY RoAD 3l ó stLT, cO 8r ó52
I O MUSTANG DRIVE NEW CASTLE, CO 81647
5473 N CRESCENT RIDGE DRIVE TUCSON , AZ 85718
92OO E MINERAL AVENUE #4OO CENTENNIAL, CO
80r r2
217908200101
217908300102 Not ovoiloble SILT
21 7908300103 Not ovoiloble SILT
ROW Not ovoiloble null
6073346 COUNÏY RD
SILT
1t1
rHcscorTI
{
Juty 1E, 2022
Gtenn Hartmann
Principal Planner
Garfield County Cornmunity Development Department
108 8th Street, Suite 4tl1
Gtenwood Sprinç, CO 81ó01
Re: Letter of Authorization for trtlPA-05-22-8894
Dear Mr. Hartmann,
Thls tetter ls ln fotlow up to your NTC Letter for the above-referenced apptication, and
speclflcatty ltem #2 ln that letter. Tony Roberts, Vlce President of Operations, and
Chrls Hurley, Corporate Cornsel, wltl represent the appllcant ln any proceedlng
required to process the apptication; howev€r, representatlves of SGfvl may provlde
support to tûr. Roberts or Mr. Hurtey during said proceedings.
5incerety,
tHc scoTT
Terrl Priday
Vlce Presldent of Admlntstration and Operatlonal Support
Ân Equcl Oppo+{wnity Enrployrr
lOf0f, tå:.Ì Of;'r (Ët[!: 9OAO 1.Ulfl;û0 lIriGLtlVi}Ol] iÐg,tìlll. ¡rl{SCOrr.(Õtr. l3tf-rçt.eliìe
rHc
Juty f 8, 2022
Gtenn Hartmann
Principat Ptanner
Garfietd County Community Devetopment Department
108 8th Street, Suite 4{}1
Glenwood Springs, CO 81601
Re: Letter of Authorization for MIPA'05'22'8894
Dear Mr. Hartmann,
Thls tetter ls ln fottow up to your NTC Letter for the above-referenced apptication, and
spectflcatty ttem #2 ln that tetter. Tony Roberts, Vlce President of Operations, and
Chrls Hurtey, Corporate Counsel, wilt represent the appllcant ln any proceedlng
required to process the apptication; however, representatlves of SGM may provlde
support to lvtr. Roberts or iÄr. Hurtey during said groceedings.
Sincerety,
rHc scoTT
Terrl Prlday
Vlce Presldent of Admlnlstrâtlon and Operatlonal Support
An [gucl Opportunity Enrplopr
103o3 lâ!r oFT cf,tËr{ coÂo, sulTÊ iot I t?içttlvçoÞ co so¡ I ? I l;-lcs(oIÍ,col* I 303.7e0.91oo
Revised Floodploin Development Permit Norrotive for Rifle Pit #l August 2022
Attochment D
CDOT Access Permit #320024
s D
aSCOTT CONTRACTING INC.cDor AccEss PERMTï #320024RIFLE GRAVEL PIT NO. 1PROJECT ENGINEERJAKE LIVERMORE, P.E. 57241OWNER/APPLICANTSHEET NO.INDEX OF sHEFTsTnu sHÊnSTNMÐNSGENERAT NOTESsuwÀRY or ÆPRoxrMlE auaNnES (sAa|ÌYP|CA SÊCnONSDETÀISGEOMENY PNPN & PROTIEDRTVEWAY ¡t.AN AND PROFItr'InAFflC CONrnOrSTORM WAftR MNAGEMTNT PhN (SWMP)EROSION CONÍROLSIGNING & S'IRFF.¡GcRoss sEcÍoNsWB5O ÍURNING MOVEM€MSCOIT CONÌRACTING INC92OO EAST MINERAL AVE, SUTTE 4OOCENÌENNTAL, CO 80112I2ô7I9ll12-1617r &2021-2526.2A293G3l32TABUIATION OF LENGTHUÆORSRUC¡JRE3252 F15E34 flSANONRW RECOffiUMONtA 2+Æ - ÍA 35+00STRIPINGWM CREEK ROAD - STA Js+OOPROJECT TOCATION MAPN.T.S.Sdion 8 & 17, Twrohip ó South, Ronge 92 Wet óth PrimeMer¡diohCONSTRUCTION PLANSJANUARY 2O2IuNcc 1-800-922-19A7Proiæt No.,/CodeShdñ!ñb€r 'lCônt6d lñlôrmdtidPrcid Enginæ(PRO.IECT STÀRIED: / /ACCEmD: / /As ConslrucledRd¡sd:SSGMI l8 West Si{h StÊt Suite 200Glenwæd Springl CO 8ì601970,915.10C/ M.sgminc.comffilscqrrlmln¡thc@OOOl-amn,,tar F¡la lnla¡mdia¡Ptiñùtè:1/26/2021br Modificdion Doh: l/2ól2021Dûùìng File Nom€: Rifl*¡rRdrrrdmìñÂu@dve¡. 2020 Scole: A6ShmSGM Proid No.: 2019441.OO2Ovolity Cdþ[ RN
PLANNUMBER- M-510-¡- M-60't-tE M-100-1- M-100-2- M-20}-1t M-203-2E M-20F11- M-206-2r M-204-1E M*210-1E M-214-t- M-216-1- ¡t-+12-1- t¡,-412-2M STANDARDPAGENUMBERTITLESTANDARD SYMBÐLS (3 SHEETS)....-....-.--.-----. --------- ---1-3ACRONYMS AND AEBREVTAÎONS (4 SHEEIS) - -.. -... - - -,. -. - -.4-7APPROACH ìOAD6.-.---...-..... .-...........8DrrcH ÊPÊi .......-........................9SUPERELEVÅTION CRO',ÍñED AND -..-.--10-12DTVDED HTGTWA\S (3 SHEETS)SUPERELEV¡.T|ON SAEETS (2 SHEETS) .-.............. -.---.1 3-14EXCAVATION AND BACKFILL FOR S]RUC'TURES ..............1 5-16(2 SHEETS)EXCAVATTON AND BACKFTLL FoR BRTDGES (2 SHEETS) -...17-18ÌEMpoRARy EROSTON CON IROL (11 SHEETS) .--...-....-.-. 19-29|¡AL8OX STPPOFTS (2 SHEETS) .-....30-31NURSERY S-OCK DETATLS ..........................-.----. -.---.- 32sol REiEN-tON toVEìrNG (2 SHEETS) -.....-......-.-. ---33-34coNcRETE PAVEMÊNT JOTNÍS (5 SHEETS) ..-----..-........3s-39CONCRETE PAVEMENT CRACK REPAIR (4 SHÊETS)(lEtt, ts/Ð a! ær¿w z .Ør9)STRUCTURAL PLÀTE P|PE H-20 LOADTNG --.-....---..-.-..-.-...40SÛ.¡GLE CON3RETE BoX CULVERT (CAST-|N-PLACE) . -. --. -- 41-42(2 SHEETS)DOUBLE COÈ¡CRE-E BOX CUL\ERT (CAST_IN_PLACE) ....... 43-44(2 SHEETS)TRI]LE CON]RETE BOX CULVERT (CAST-IN-PLACE) ,...... 45-46(2 SHEETS)HEADWALL FOR PTPES ...-_....................-....-...-. ---..-.. 47TY?E "S' SåDDLE HEADWA-LS FOR P|PE ....-........-.--...--. 4EHEADWALLS AND PIPE OUILET PAVING ......................... 49uNGWAr.rS FOR 'rPE OR BOX CULVERTS i2 SHEETS) ... 50-51TJETAL P|PE (4 SHEETS) .............. s2-55RETNFORCED CO¡ERETE P|FE ...-..........56PRECAST CONCRETE BOX CULVERT -....-..-.--.................. 57(ÆtsÐ dlætmffi 14 zø)CoRRUGAIED POLYETHYLENE P|PE (AASHfO M294) ..-....-.... 5EAND POLYPROPYI"ENE PIPE (AASHTO M33O)POLWNYL THLORTDE ÍPVC! P|PE (AASHTC, M304) ............"s9S'IEEL REINFORCED POLYEIHYLENER|æED PIPE (AASHTO MP 20)60CONCRETE ÁND METAL END SECT|ONS -.--.-----.-.---...--..... 61TRAVERSABLE END SECÍIOIJS AND SAFETY GRA'ÍES ....-.. 62_64i3 sHEErs)NLET, TYPE C .................... ..........6sINTTI. TYPE DPLANNUMBERE M-606-1M STANDARDÏÏLEPAGENUMBERPLANNUMBERfl s-612-1- s-613-1E 5-615-1E 5-614-6r s-630-2MIDWEST GLARDRAIL SYSIEM TYPE 3 W-BEAM ..............79_9731 TNCHES l.1s SHEEÍS)(Æb,9a AV t4ffil 4 An)cuARDtArL TYPE 7 F-SHAPE EARRTER {4 SHEETS) .----...-98-101PRECAST T'PE 7 CONCRETE BAFRTER (3 SHEETS) ........+eF+€+(Æt/rsÐ 4t'1¿/6tts/ 4 .m)GUARDIAIL TYPE 9 SINOLE S-OPE BARPIER ..,............105-115(11 SH=Ers')(ÆrSElÐ Ay AlPdl,5 20þ)wRE FENCES AND GAIES (3 SHEETS) -.-.--.--...-.-.-...-.116-118cHArN L|NK FENCE (3 SHEETS) ....-..119-121BARRTER FENCE ............-...-.---........-122DEER FENCE, GA]ES, AND GAÀIE RAMPS (5 S¡-EETS)...... +2}-+27(ÆttsÐ av tr.r E 2aÐ)Ptc(Ef sNow FENoE .............. ..,......126ROAD CLOSURE GAIE (9 SHEETS)........----.------. --------1 29-1f,7cuRB RAMPS (10 SHEETS)......... .-.-13a-147cuR8s, GUTTERS, ANo STDEWALXS (4 SHEETS) .. -. - - -- -- - -. I 48-1 51CATTLE GUARD (2 SHEETS) ...........152-153DEER GUARD (2 SHEETS) -..--..-..--.-154-155RUMBLE STRTPS (3 SHEETS) -...--....156-1saSAND BARREL ARRAYS (2 SHEETS)........-.-........---....¡59-',160EMBANXMENT PRotECfOR ÍYPE 3 .....-..............-....--.....161EMBANKMENT PRo ÍECTOR fYPE 5 ................... --. -.........162S STANDARDPAGETITLENUMBERDEL¡NEATOR INSTALLAÎONS (E SHEETS) ....ROADWAY LIGHTìNG 16 SHEETS)(Êrg2 ø/ sPE1aæ -74 nÐ)ALERNAÎVE ROADWAY LIGHTING 14 SIEETS)(ìtÊU lstÐ ¿Y sPÌmÆn,re mm)GROUND S|GN PLACEMENT (2 SHEETS) -..--.-CLASS ì SIGNS .....,..1E9CLASS lt STONS ---.---.--.--------.--......-.190CLASS ilt S|GNS (3 SHEETS) .---.-...191-193EREAK-AWAY S|GN SUPPÕRT DETAILS ..-............-..--..194-195FOR CLASS ilt STGNS (2 SHEETS)coNcREIE F00.I1NGS ÂñD SIGN ISLANDS ........-....-.--..-196-197FOR CLASS ilr S|GNS (2 SHEETS)TUBULAR S]EEL S|GN SUPPORT DEÍAILS (7 SHEE-S) -----196-204(s.lffigm atl .t |*//u?r 2¿ nn ar s-ır1-1â)....-. --. -.. .:71- t7E......-......9!!-€Ë- M-203-12E M-206-1- M-606-13E M-606-14E M-606-15-t M-607-1- t¡-607-2- M-607-3- M-607-4- M-607-10E M-607-15E M-60E-1E M-609-1E M-6:1-1- M-6'1-2E M-6'4-1E M-6-4-2- M-6-5-1- M-6-5-2E M-6-6-1E M-6?O-t= ;t-620-2E M-620-r1E M-620-12E M-629-tI 5-614-1I 5-614-2E 5-614-3E 5-614-4E 5-614-5...... --.,,. -187-r 88ALL OF IHE M&S STANDARD PLANS, AS SUPPLEMEN'ÍEDAND REIISED, APPLY TO THIS PROJECT VITIEN USEDBY DESIGNATED PAY I'ÍEM OR SUBSIDIARY IIEM.THE M&S STANDARD PLANS USED TO DESIGN THIS PROJECT AREINDICA]ED BY A MARKED BOX T, ,ND \IILL BE ATTACHED TO .IHEPLANS. ALL lHE O]HER M&S STANDARD PLANS ARE S1ILL EUGIBI.TFOR CONSTRrcTON IF APPROVED BY AN APPROPRIAÏE CDOT ENGINEER...æÆèMARKER ASSEMBLY INSTALLAÎONS ...,...2O7MILEPOST SIGN DETAIL FOR HIGH SNOW AREAS ...............208S]RUCIURE NUMBER ìNS-TALLAIloN (2 SFEETS) .-,-.,-,-,..209-210FLASHTNG BEACON AND SIGN TNSTALLATToNS (4 SHEE-) ,2r1-214TYPICAL POLE MOUNT SIGN INSTALLATONS ...-..................2'15CONCRETE BARRIER SIGN POSf INSTALLATONS ............216_217(2 sHEE'ts)(lE,Êø ar grmÆP 4 zz)TyprcAL MULft-stGN tNSTALLATTONS ...-.................-.....-- 218TYPICAL IRAFF|C SIGNAL 30'-75' DoU3LE MAST ÂRl"tS .-..219-22365'-75'SINGLE MAST ARMS (5 SHEETS)ALIERNAfIVE IRAFFIC SIGNAL ........224-22725'-55'SrNGrr MAST ARMS (4 SHEETS)TEMPORARY SPAN WRE STGNALS (13 SHEETS) ...........-22A-24OoABTNET FoUNDAIION DETATL (4 SHEETS) - -,,........... -.. 241-244TRAFFIC LOOP AND MISCELLANEOUS SIGNAL DETALS .....245-252(E SHEETS)PEDESTAL POLE S|GNÀLS (2 SHEEIS) ................. -... -.253-254PEDESIRIAN PUSH EUTTON POST ASSEMBLY DETAI-S(htâ|t, /9,Êv al ue//Pr2¿ 2o2o)srAÏtc srGN MoNoTUEE STRUCTURES il2 SHEEISI ....--.255-266OYNAMIC SIGN MONOTUBE STRUCTURES (¡4 SHEE-S) .....267-280PAVEMENT MARKTNGS (9 SHEETS) .-..-.-.----.--.---..-..--. 2E1-289(Æ'ßÐ Al rød. ,Z mm)TRAFFTC CON]ROLS FOR HIGHWAY CoNSIRUCTO¡I .--...-.290-313(24 SHEEÍS)BARRTCADES, DRUMS, CONCRETE BARRTERS ('TEMPj. ..-...........31 4AND VERÏCAL PANELSFLASHTNG EEACON (PORTAELE) DETAILS --..... .-.-..-.-----..-.-515s IEEL S|GN SUPPORT (IEMPORARY) lNSfÀLLAnON -..-. -.. -3',16-31 7DETAILS (2 SHEETS)PORÍABLE RUMBLE STRTPS (ÍEMPoRARY) (2 SHEEÍS) ...--Jl&-319EMERGENCY PULL-OFF AREA (IEMPORARY) -... -. --....-........ -^ 320ROLLING ROADBLOCKS(J SHÊETS)FOR ÍRAFF|C CoNTROL,...----.---. 321-323INVERTED SIPHON......163r s-614-EE 5-614-9E 3-614-22ú s-614-40E 5-6'14-41E 5-614-42E 5-614-43E 5-614-44E 5-614-45E 5-614-10- s-614-11- s-614-12E 5-614-14E 5-614-20E 5-614-21E M-601-2E M-601-3E M-60F4E M-601-10E M-601-11E M-601-12E M-601-20E M_60F1- M-603-2E M-603-3Et s-614-404F|ELD LABORATORY CLASS 1 --..--.-..........-.... ------........ 164F|ELo LABORATORY CLASS 2 (2 SHEETS) --..-..-....-.,..165-166F|ELD OFFTCE CLASS 1 ....--...-. .......-.167F|ELD OFFTCE CLASS 2 ....-.--,-- .......-.166SLRVEY MONUMENTS (2 SHEETS) --...169-170E M-605-5- M-60!6I M-60]-10- M-60Ft2E 5-614-50E 5-614-60r s-627-1r s-ô30-1E M-604-10E M-604-11E M-604-12E M-604-13E M-60,+-20E M-604-25- M-605-1E 5-630-3E 5-650-4E 5-630-5E 5-630-6- s-630-7,,ffiCOLORADODEPARTMENT OF TRANSPORTATIONM&S STANDARDS PLANS LISTJuly 31 , 2019Revised on September 30, 2O2OProiect No.,/CoiethdNumhe' acDoT ACCESS ?ERMI #320024SÍANDARD PI.ANSJIDrcw¡ By:lJtSh€d Subsllfu ConslrucledESGMI l8 West Sidh SÍd Suile 200elenwood Springs, Cı 8lóo-970.945.10O4 ww.sgm-inc.comSCOTTDoÈOOCômb'ilêr Filê lntôrmdt ônPtiúùte 1¡26/21Lol lüodif¡colion Doþ:'/2ó,/2021DEw¡nq FileNome RiÍ.PirRdeeÄdñ nAecodver. 2020 Sole: AóShowrSGM Proid Nc.: 2019¡41.002'lolivCod€l: tN
DIVISION 1OO - GENERAL PROVISIONS1. ALL MATERIALS, EQUIPMENI, INSTALLATION AND CONS'IRUCÍION WITHIN THE STATE HIGHWAY ROW SHALL BE INACCORDANCE WITH THE LATEST EDITION OF THE FOLLOWING STANDARD REFERENCES AS APPLICABLE:CDOT MATERIALS MANUALCDOT CONSTRUCTON MANUALCDOT STANOARD SPECIFICATIONS FOR ROAD AND ERIDGE CONSTRUCTION, LATEST EDITIONCDOT STANDARD SPECIAL PROVISIONS, AS APPLICABLE TO PROJECTcDoT SÍANOARD PLANS (M&S STANDARDS)FHWA MANUAL oN UNIFoRM TRAFFIC CoNTROL DEVICES (MUTCD) FOR SÍREETS AND HIGHWAYS AND THE COLORADOSUPPLEMENI -fHERETOAASHTO ROADSIDE DESIGN GUIOE2. ACCESS CONSTRUCTION WITHIN HIGHWAY ROW AND ATL HIGHWAY IMPROVEMENTS SHALL COMPLY WITH THE ACCESS PERMITAND ÑOTICE TO PROCEED (NfP). A COPY OF THE PERMIT AND NTP SHALL BE AVAILABLE ON THE CONSfRUCTION STTEAT ALL TIMES.3. THE PERMITTEE SHALL COMPLETE ALL WORK IN THE CDOT RIGHT OF WAY WTHIN 45 CATENDAR DAYS AND WITHIN ASINGLE CONSTRUCTION SEASON UNLESS OfHERWISE NOTEO IN THE NOTICE TO PROCEED.4. THE CONTRACTOR SHALL PROVIDE ON_SIÍE SANITARY FACILITIES UNLESS FACILITIES ARE ALREAOY PROVIDED THAT ARERF¡SONÀBLY CLOSÊ TO THE CONSTRUCTION SITE.5. THE CONTRACTOR SHAIT MAINTAIN ACCESS TO AFFECTED PROPERIY OWNERS AT ALL TIMES DURING CONSÌRUCTION AT NOADDITIONAL COST.THE CONTRACTOR SHALL LIMIT CONSTRUCTION ACfIVITIES TO THOSE AREAS WITHIN 'I}lE LIMITS OF DISTURBANCE AS SHOWNON -THE PLANS, AND WÍTHIN THE BOUNDARY OF fHE PUBLIC RIGHT OF WAY. ANY DISTURBANCE 8ÐYOND THESE LIMITSSHALL BE RESTORED TO ORIGINAL CONDITION BY THE CONTRACIOR AT THE CONTRACTOR'S Ð(PENSE. CONSTRUCTIONACTìVITIES INCLUDE THE PARKING OF VEHICLES OR EOUIPMENT, DISPOSAL OF LITTÊR, AND ANY OTHER ACTION WHICHWOULO ALTER EXISTNG CONDTTIONS. THE CONTRACÍOR SHALL NOT PARK ANY VEHICLES OR EOUIPMENT IN CDOI RIGI-ITOF WAY6. ALL EXISTING ACCESSES SHALL REMAIN OPEN fO TRAFFIC THROUGHOUT CONSÍRUCTION, WI'IH THE EXCEPIION OF MINORCLOSURES OF LESS THAN ONE HOUR. THE CONTRACIOR SHALL REOUEST APPROVAL FROM THE ENGINEER FOR ALLMINOR CLOSURES PER TRAFFIC CONTROL PLAN - GENERAL SPECIAL PROVISIONS.7. THERE IS A POTÊN'NAL FOR ENCOUNTERING PETROLEUM CONTAMINATED MATERIALS ON THE PROJECI. IF ENCOUNTERED,THE CONÍRACTOR SHALL FOLLOW SECTION 250 OF THE STANDARD SPECIFICATIONS FOR ROAD ANO BRIDGE CONSIRUCTION.8. THE CONTRACTOR SHALL PROTECT ALL WORK AREAS AND FACILITIES FROM WAÍER AT ALL TIMES. AREAS AND FACILITIESSUBJECTEO TO FLOODING SHALL BE PROMPTLY DEWATERED AND RESTORED AT NO COST TO fHE PROJECT.S. CONTROL OF SURFACE RUNOFF AND THE REPAIR OF DAMAGES RESULTING FROM RUNOFF IS SOLELY THE RESPONSIBILITYOFÌHE CONTRACTOR. THE COST TO CONTROL SURFACE RUNOFF OR REPAIR DAMAGES WILL NOT BE PAID FORSEPARATELY, BUT SHALL BE INCLUDED IN THE WORK.10. THE CONTRACTOR SHALL KEEP EXISTING DRAINAGE S'IRUCTURES FUNCTIONAL AND MÀINTAIN DRAINAGE TO THOSESTRUCTURES. MAINTAINING DRAINAGE WLL NOf BE PAID FOR SEPARATELY, BUT SHALL BE INCLUDED IN THE WORK.11, THE CONTRACÍOR SHALL PROTECT ALL EXISTING SURVÉI MONUMENTS DESIGNATED TO REMAIN FROM DAMAGE DURINGCONSTRUCTION OPERATIONS. ANY MONUMENTS DISTURBED BY THE CONTRACTOR ]}IAf ARE NOT DESIGNATED FORRELOCÀTION SHALL BE RES T AT THE CONTRACIOR'S EXPENSE. THE CONÍRACTOR SHALL NO-IE THOSE MONUMENÍS INTHE FIELD PRIOR IO CONSTRUCTION.12. THE CONTRACToR SHALL HAVE: ONE COPY OF THE PLANS AND REVIEWED SHOP DRAWINGS AND oNE COPY oF THECONSTRUCÌION SPECIFICATIONS FOR THE PROJECT AT THE JOB SI'TE AT ALL TIMES.13. ALL MATERIALS AND WORKMANSHIP SHALL BE SUBJECT fO INSPECTION BY THE COLORADO DEPARÍMENÍ OFTRANSPORATION (CDOT), OR ÍHEIR ASSIGNED REPRESENTATIVE- CDOT AND THEIR ASSIGNED REPRESENTATìVES RESERVETHE RIGHT TO ACCEPT OR REJECÍ ANY SUCH MAÍERIALS ANÐ WORKMANSHIP THAT DO NOT CONFORM TO THE PLANS ANDSPECIFICATIONS USTED HERE¡N. REQUIRED QUALIfY CERTIFICATIONS AND OOCUMENTATION SHALL BE SUBMITTED fO CDOTAND THEIR REPRESENTATIVES PRIOR TO PLACEMENT OR USE OF THE MATERIAL.NO, PRIVÀTENO,wc^tNg, ESÎ}tÁNNO BORINGNO P.E.NEEDEDNO ASCE3ASYES, PUBUCYES,HôÞtôm tY6,Ð(cEEDSfLs, æRtNgYES, P.E.NEEDEDYES,¡¡ASCEmPROJECT IIWOLVES CONSIRUCTION CONTRÁCÍ SITH A PUBUC ENNTYPRqIESI ¡NVOLVË PRIMARILY IIORIZONII CONsIKUçIIUN NU rutsSNtr rMrw mrrcrlY tHE coNstRucnoN oF autlD['tcsÐ(CAVAION FOO'TPRNT EXCEE)S z-FEET DEPIH Á¡¡O IS A CONIIGUOUS1,o00-SQIIARE fEEr; ORINVOLVES UNLMY BORINGPROIECÍ REQUIRÊS IIIE DESIGN SERVICES OF A UCENSEDPROFESSIOML ENGINEER (P,E.)REQUIRED TO I¡¡Ef OR EXCEEO THE ASCE J8 STANÍURD?9-t.5-IgZ-8-ß-A9-1,5-t02-6AR9-1.¡-t 9z-6.E.C.t-A9-1.5-102-9- ì,5- l 02-6,8.D9-1.5-105-21I2sJE+SUMI¡A1. THIS PROJECf DOES NOT MEET THE CONDÍTIONS FOR A "SUBSURFACE UTILITY ENGINEERING-REQUIREO PROJECT," AS SETFORTH tN THE 8/8/201E COLORADO STÀTE LAW. REFER rO tHE "COLORADO REVTSED STATUTES (CRS) 20lE TIILE9_1.5-102 sUBsURFAcE UTILITY ENGINEERING (SUE) REOUIRED PRoJECT COMPLìÀNCE CHECKLIST" TABLE FOR REFERENCETO THESE CONDITIONS.2. UTILITIES ARE DEPIC'ÍED ON THESE PLANS IN ACCORDANCE WITH THEIR ACHIEVED "QUALITY LEVELS,' AS DEFINED IN THEAMERICAN SOCIETY OF CIVIL ENGINEERS (ASCE) DOCUMENT ASCE 38, "STÀNDARD GUIDELINES FOR IHE COLLECTION ANDDEPICTION OF EXISÎNG SUBSURFACE UNLMY DATA." LOCATION OF EXISTING UTILIÍIES IS DEPICTED ACCORDING TO THEBEST AVAÌLABLE INFORMATON, ARE NOT GUARANTEED TO BE ALL INCLUSTVE, AND REPRESENT COND¡TIONS AT THE TIME OFDATA COLLECTION. PRIOR fO CONSTRUCTION, CONTRACTOR SHALL VERIFY Ð(ISTING UTILITIES WTH THE UTILITY NO'TIflCAÍIONCENTER OF COLORADO (UNCC) AND/OR UTILIIY COMPANIES. ALL COSTS ASSOCIATED WITH FIELD VERIFICATìON OFLOCA-TION AND DEPTHS OF UTIUTIES FOR DAMAGE PREVENTION SHALL BE BORNE BY-THE CONTRACÍOR AND SHALL BECOMPLTTED PRIOR TO THE COMMENCEMENT OF ANY CONSTRUCTION. THE CONTRACTOR SHALL IMMEDIATELY NOTry THEENGINEER OF ANY ÐISCREPAÑCIES OR NEWLY ACQUIRED UÍIUTY DATA.3. UTILITY QUALITY LEVELS ARE GENÊRALLY DEFINED BELOW. REFER 10 ASCE 38 FOR MORE INFORMATION:3.1 UTIL|TY oUALITI LEVEL "D" (OLD) _ A VALUE ASSIGNED TO A SUESURFACE UNDERGROUND IJI'ILITY SEGMENÎ ORUTILITY FEAÍURE, WHOSE ESTIMATED POSIÌION IS JUDGED THROUGH UNLIY RECORDS, INFORMATION FROM OTHERS(SUCH AS UNCC 811 FIELD MARKS), OR FROM VISTJAL CLUES SUCH AS PAVEMENT CUTS, OBVIOUS TRENCHES, OREXISTENCE OÊ SERVICE.3.2 UTILITY QUALITY LEVEL "C" (OLC) - A VALUE ASSIGNED TO A SUBSURFACE UTILITY SEGMENT, WHOSE ESTIMATEDPOSIÎION IS JUDGED THROUCH CORRELATING IJTILITY RECORDS OR SIMILAR EVIDENCE TO UTILITY FEAÍURES, VISIELEABOVE AND/OR BELOW GROUNO.3.4 UÍILITY QUALITY LEVEL "A" (OLA) - A VALUE ASSIGNED TO THAT PORTION OF A SUESURFACE UTILITY SEGMENT ORSUBSURFACE UTILITY FEATURE THAT IS DIRECTLY EXPOSED (OR VERIFICATION OF PREMOUSLY EXPOSED AND SURVÐÍEOuTtLmES), MEA5URED, AND wHosE LocATtoN AND DTMENSToNS ARE l'¡ED To rHE pRoJEcr SURVE/ DAltM. (E,c. ATEST HoLE OR TESI Pll.)4. RELIANCE UPON THESE DATA FOR RISK MANAGEMENT PURPOSES DURING EIDDING DO NOT RELIEVE THE EXCAVATOR ORAND/OR PROCEÐURÊSSCOPE OF WORKUTILITY INVESTIGATIONSUTILITY OUALMY LEVEL "8" (OLB)FEAÍURE WHOSE EXISTENCE ANDJUDGMENT AND WHOSÊ LOCATION- A VALUE ASSIGNED TO A SUBSURFACE UT|LMY SEGMENT OR SUBSURFACE UTILTTYPOSITION IS BASED UPON GEOPHYSICAL METHODS COMBINED WTH PROFESSIONALIS TIED TO THE PROJECT SURVE/ DATUM.UILMY OWNER FROM FO!j.OWNG ALL APPLICABLE UTILITY DAMAGE PREVENTION S'TAÍUTES, POLìCIES,DURING EXCAVATION. IT IS IMPORTANT THAT THE CONTRACÍOR IIWESTIGATES AND UNDERSTANDS THEBETWEEN THE PROJECT OWNER AND ÍHEIR ENGINEER REGARDING THE SCOPE AND LIMITS OF THELEADING TO THESE UTILIII DEPICTIONS.14. PROJECT INSPECTION AND TESTING WILL BE PROVIDED BY THE CONTRACTOR AND OVERSEEN BY THE CDOT ENGINEEROR CDOT REPRESENIATIVE. ALL ACCEPTANCE TESTING TO BE PERFORMED BY AN INDEPENOENT PARTY. COMRACTOR TOPROVIDÊ 24 HOUR NOÍICE FOR ALL REQUIRED]ESTS. SEE CDOT STANDARD SPECINCATIONS ÀND CDOI FIELD MATERIALSMANUAL FOR ADDITIONAL INFORMATIONUTlLTTIESÆjB\ws.TIIE CONTRACTOR SHALL COMPLY WITH COLORADO REVISEO STAIUIES (CRS) 2018, TITLE 9, ARTICLE 1.5,.EXCAVATIONREQUIREMENTS", WHEN EXCAVATINC OR GRADING IS PLANNED IN THE AREA OF UNDERGROUND UTLTY FACIUTIES. THECONTRACIOR SHALL NOTIFí ALL AFFECTED UTILITIES AT LEAST 'IWO (2) EUSINESS DAYS, NOT INCLUDING THE ACÍUAL DAYOF NOTICE, PRIOR TO COMMENCING SUCH OPERATIONS. fHE CONTRACTOR SHALL CONTACÎ THE UTILITY NOTIFICATIONcENfER 0F CoLORADO (UNCC) AT E11 OR 800-922-19E7, TO HAVE LOCATONS OF UNCC REGISTERED LINES MARKEDBY MEMBER COMPANIES. ALL OTHER UNDERGROUND FACILTTIES SHA]-L BE LOCATED ÐI CONIACIING THE RESPECTIVEOWNER.6. SHoULD THE coNTRAcToR ENcoUNfER UNKNoWN AND/oR ABANDONED UTILITY FACILITIES THE CONTRACTOR SHALL VERIFIWITH THE RESPECTIVE UT|LTTY OWNER THAT THE IJTILITY MATERIAL IS INACTIVE/ABANDONED BEFORE REMOVAL FROM ÌHEWORK AREA7.THE coNTRAcroR SHALL coMpLy wtrH coLoRADo REV|SED SIATUTES (cRs) 2018, TtrLE 9, AR'ncLE 1.5-103 (10), "ÀLLProiect No.,/CodeShsNumber 3CDOT ACCESS PERMIT #320024GENERAT. NOTES (1)Eng¡nær:JNDroM BylJJtADMINAs ConsirucledSSGMI I I w6t Sixth Skæ|, Süile 200Glenwæd Springs, CO 8ì ó0ì97O.945.1 OO4 ww.sgmìnc.com.uF-:.lscorr,lnil.heRev.@-O-l.amn,,rar Fila lnl¡rmalianPtirtDdêt 1/26/21lod Mod¡ficol¡o. Dob: l/2ó12021D@inE Fììe Noñe: RiflePiRdryAdninSGMPrcidNo.: 20ì9¡4ì.002ùoliÍtuiþl:RN
ìtJIì¿IIINEW UNDERGROUND FA:ILITIES, INCLUDING LATERALS UP TO THE S'TRUCTURE OR ELILDING BEING SERVED, INSTALLED ONoR A¡ER A/E/2OÌA, íUST BE ELECTION|CALLY LOCAÍABLE T'/HEN jNSrALEo."6. PROJECT SPEOFIC NOÍES:8.1 UflLlTY FI:LD INVESTEATICN wÀS PERFORMED PER THE FoLLo\4lNG DATES/WEAIHER: NOVEMBER 21ST, 2020, wTHCOt¡ -EMPERATURES AND CLEAR SKY. EXISÎING UÍILITV CONDI-IONS MAY HAVE CHANGED AFIER ]HIS DAÍE,8.2 UIUTY INVESTIGATION EOLIPMENÍ UTILIZÊD AS FoLLOWS: WAX-MITROTECH VL0C3-5000E.3 UÎUTY FI:LD INFORI¿ATION WAS RECORDED 8Y THE SGU. INC. SURVFI DEPARIMENT.4.4 UILITY LINES THAT FERE UNABLE lO ACHIÊVE QLB AS FOLLOWS: URSA OPERATI',¡G COMPANY LLC SIAFF MARKEDTHEIR NON_POTABLE WATER AND NÂTURAL GAS FACIU¡ES UPOr/ COORDINAÎON DISCUSSIONS WTTH Sqú íAFF.6.5 XCEL ENERGY HIGH PRESSURE GAS FACILIIIES ARE NO'I SI-OWN ON THE PLAN SHEETS BECAUSE -HEY AREAPPROXIII¡A'TELY 1,OO) FEET OUTSIDE OF THE PROJECT LIMÍS PER XCEL ENERGY STAFF. THESE FACILITIES ARE INPROXIU|TY Tt fH€ PìOJECT LIMITS ANO WERE LIST:O ON THE UNCC 811 SUE flCKEr AS Á RESPECT|TE UTILmYMEMBR. HOLY CROS EÀERGY FACIITIES ARE ALL OVERHFAD ELECTRIC LINES IN PROXIMfT fO TIIS PRO"ECI. THESEFACILI¡ES ARE IN PFOXMMY TO THE PROJECT UMITS ÂND WERE LISTED ON THE UNCC 811 SUE TICKET ÀS ARESPECNVE UTILITY I'EMBER.úlJlY m[ns lfÍ{t t/ENtTY oF PaôlEcÍ ur¡lliRECORDSRECEÍIEDYESYEStEs\tsCONTACT EMA-JASOI{.SIiARPECCENÏURYUNK.coMsPtc¡< RooHolYcRoss.coMTRAVISOKASERSDRAXE.COMPAT,ILR.HEAI.DOXCELENERGI.CovCONTåCTPHONE(s70)324-42û(s70)917-5521(e70)947- 1 349(303)57 r -32A5CÖ¡ÍACT ll¡qüEJASON SHARPEst ^¡{t}lA Ptct( RoTRAVIS J KAISERruL HEALDI.'TIUIY TYPEFIAER, TELEPHONEET-ECIRICGAS SIEAT¡,YfATER?HI PRESSURE GASABBREVIATIONc{[J(HÈENURSAX'ELORGAI{IZATION l{A¡¡ECENIURYUNKHOLY CROSS ENERGIURSA OPERÃNNCCOMPANY [CXCEL B{ERO/fERMIIS1. THE CON-RÂCT.]R IS RESPONSBLE FOR OBTAINING AL- R'QUIRED PERMÍS AND DEV:LOPING THE MEIHODS O:COMPLIAI.ICE WTH'fHOg PEIMfÍS FOF ALL CONSTRUCTION ACTIVIIIES ON THE PROJECT.2. WOR( AC]IVITIES SI-ÀLL ADHERE TO 'N-E PERMANENT AND TEMPORARY LIMITS SHOWN ON 'THE PL.ANS SET, AS AI.JTHORIZEDIN PERMITS, RISH'TS OF WAYS AND EASEMENTS FOR TIE PROJECT.DIVIS ON 2OO EARTHWORKl.EROSION COÑTROL MEASURES MUST 8E IMPLEMENTED BEFORE CONSTRUCTION AND GRADING CPERATIONS 8EGN.CON_RACTOR,S VEHISLES AND EQUIPMENÍ SHALL BE WASHED AND FREE OF SOIL AND DEERIS CAPAELE OF TRANSPORTINGNOXICUS WEED SEE]S ÐR RDOTS FRO{ OTHER AREAS BEFOR: BEING BROUGHÍ ON THE PROJEC'T SfÌE.SEPARATELY, BUT SHALL BE INCLUDED IN THE EARTHWORK ITEM. \4ATER SHALL BE USED AS A DUST P,ALLI¡ÍI\E WIiEREREOUIRED. LOiATON SHALL BE AS DIRECTED BY IHE ENGINEER.FINE GRAINED SOILS _ AASHTO'_99COARSE GRAINED SOILS - AASH'IO T-IO.TYPE OF CÔMPACTION FOR'ÊIIS PROJECT WLL BE:(SIANDARD PRocToR)180 (MOD|FTED PROCTOR)11.WATER FOR COMPACÍION WLL NOT BE PAID FOR SEPARÂÍELY BtJT SHALL BE INCLUDED IN]HE WC€I:.I2.MOISTURE-DENSIY CONTROL WILL BE REQUìRED FOR THE FUII DEPTH Oa THOSE EMBANKMENïS, rÂ3REGA-i: BASECOURSE (SPECIAL), AND AGGREGA]E BASE COURSE (CL 6) ON'IHIS PROJECT:DEPTH OF MCXSTURE_DENSMY CONIROL FOR IHIS PROJECT SHALL BE AS FOLLOWS:FULL DEPTH OF ALL EMBANKMENTS AND EÑGINEERED FILLSBASES OF CUTS AND FÌLL 6 INCHESFULL DEPTH OF EMBANKMENT SECTIONS USED FOR DITCHES AND CHANNEL CHANGESIS.PROOF ROLLING OF fHE SUBORADE WILL NOT 8E MEASURED AND PAIO FOR SEPARATELY. BUT SH¡¿L BE IÌ.¡CLUDED INTHE Iì/ORK.DIVISION 4OO PAVEIVENT1. A PRE-PAVE TONFERENCE SHALL 8E HELD PRIOR TO START OF PAVIñG. ATTENDEES SHALL INCLUO: :l-E C0ÍtTRAC-IÐR,ENGINEER, AND TESTING PERS0NN:L ASSIGNED TO THE PROJECT.2. fHE CONTRAC-oR SHALL SUBMIT CONCRETE JOIÑTING PLAN PRIOR TO THE PRE-PAVING CONFERENCE. COI{CRETEPAVEMENT JOIñT REOUIREMENTS gIALL BE lN ACCORDANCE Wl-rH CDOT M-412-1. LONGITUDINAL JOl.lS SHÀLL BE T'ITH¡Nô INCHES OF LANE LINES. CDOI REGION 3 MATERIALS UNIT RECOMMENDED JOINT DESIGN IS AS FC-T.trWS:ÍRANSVERS€ JOIÑT SPACING @ 12 FEETSLAB WTDTH .......... @ 13 FEErDOVIEL S|ZE ......... @ ',t.25 INCHES3. PAVING AND PLACEMENÍ OF BASE COURSE SHALL NOT BEGIN UNT¡L 'THE ENGINEER HAS APPROIÆÐ :HE SJB€P.ADE. IHESUEGRADE SHALL BE PROOF ROLLED AND APPROVED BY THE ENGINEER PRIOR TO THE PLACEMENT c: ANY SUBSECTJENTSTRUCTURAL LAYERS. ARE¡S THAT DEFORM UNDER HEA\¡/ WHEEL LOADS AS DFTERMINED BY IHE EÈGN:ER ÂFE NO-STABLE ANO SHALL BE REMOVED AND REPLACED TO ACHIEVE A STÀ8LE SUEGRADE. THE EÑGINE:R SI-]ALL ÀPPìOVE THETYPE AND WEIGHT OF THE VEHICL: TO BE USED FOR THE PROOF ROLL PER CDOT 2O3.O7.1H8 CO\ÍRACTOR SHALLPROVIDE ALL EQUIPMENT AND LAB3R NECESSARY FOR THE PROOF ROLL. PROOF ROLLING WLL NOI E' PÂID FORSEPARATELY. 8UT SHALL 8E INCLUDED IN IHE WORK,4. FOR APPROXIMAÏE PLAN OUANTITIES OF PAVEMENT MATERIALS, THE FOLLO'íING RA-TES OF APPLICATI':N WERE USED:TAC< CoAT EMULSTFTED ASPHALT (SLOW-SEn|ñG)..........."..... @ 0.1 GALS/SO. YD.(DILUTE¡)FT.14. EXCAVATION REQUIRED FOR COMFACTION OF BASES OF CUTS AND FìLLS WILL NO-r BE PAID FOR :EÞARA'TE-Y, 8UT WILLBE INCLUOED IN THE IVORK.15, THE CONTRACTOR SHALL PROVID: SHOULDERING MATERIAL FLUSH WITH THE EDGE OF PAVEMENT ÀS SHo¡VH N THEÎYPICAL SECTION. IF ADDIÍIONAL GRADING IS REQUIRED AI'T}IE ENO OF fHE PRO.JECT TO B.ISURE ]HE, TT SHALL BEDONE BY THE CONTRACTOR Af I¡D ADDITIONAL COST TO NIE PROJECT.16. THE THICKNESS 0F TOPSOIL SHALL BE 4 INCHES AT LOCATION SHOWN lN THE PLANS. ToPSq: lS nEQURED ANDSHALL 8E GENERATED WTHIN TI-E PROJECf LIMITS FROM THE BEST AVAIT.ABLE MATERIAL AS APPR3r':O EY THEENGINEER. TOPSOIL SHALL BE STRIPPED AND STORED SEPARATELY DURING CONSTRUC-TION ACTVTTES IN LOOqTONSAPPROVED BY THE ENGINEER. TOPSOIL SHALL BE PLACED ON AREAS TO BE RECLAIMED JUST 'RIOR IO SOLCONDTIONING, RESEEDING AND MULCHING TO MINIMIZE COMPACTION FROM COÑSTRUCTIOÑ EOUIPMEN-.17. ANY OPÉN Ð(CAVATION LEFT UN^TTENDED SMLL BE BARRICADED OR FENCED OFF BY THE CONTRACIOR.2. CLEÂRING ANO GRUEBIIG SI-IALL INCLI,ÐE REMOVAL OF ALL 'TRASI- AND DEBRIS WITHIN ]HE PIOJECT LIMITS. ALL SURFACEOBJECTS, TREES, ÍREE STUIVPS, ROoTS, BUSHES. LAI\DSCAPING A\D oTHER PROTRUoINC OBSTRUCTIONS WlTl'llN THELIMITS OF CUTS ANI FI-LS SHALL BE CLEARED AND GRUEBEB, INCLUDING MOWING ^S REQUIFED. ÀL! OTHER TREES ANDBUSHES SHÁIL BE PROIECTED.J. THE CON_RACTÐR STIALT FIELD VERIFY EXISTING PAVEI4EN| ELEVATIONS PRIOR TO COMMENCING REMOVAL, PL¡NING ANOPAVING O:ERATIONS. ANY DÊr'¡ATION OR DISCREPANCY SHALL AE BROUGHT TO THE ATTENTION OF THE ENGINEER.4. ALL REMOVALS SHALL EECOUE THE PFOPERTY OF THE CONTRACÍOR UNLESS OTHERWISE INDICATED ¡N THE PLANS ANDPRO.JECI SPECINCATIONS. fH: CONTRADTOR SHALL PÊOPERLY DISPOSE OF ALL MATERIALS.BTTUMTNoUS PAV8MENT.................. .-.....-.- @ 147 LBS. / CU.AGGREGATE BASE COURSE (CLASS 3)................. @ f33 LBS./ CU.AGGREGATE BASE COURSE (C[.ASS 6)................. @ 133 LBS./ CU.FTFT5. IN THE F/EI\T THAT PROJECI PERSONNEL ENCOUNTER UNKNO'/VN SOIL AND/OR GROUNÐWA'TER CONTAMINATIO¡ICONSÏRUCTON ACTIVITIE SHOULD CEÀSE IMMED¡ATELY AND THE FROCEDURES OUILII'¡ED IN THE CDO'T S'TANDARDSPECINCAIIONS SECTION 25C SHAL 8: FOLLOWED.6. DUST COi¡TROL SHALL BE TFE RESPONSIBILITY OF THE COñTRACTOR. THE COST OF THIS wOR( 'ivlLL NOi BE PAID FOR5. DILUTÊD EMULSIFIED ASPHALf FOR IACK COAT SHALL CONSISI OF 1 PARÍ EMULSIFIED ASPHALT (SLCU_SETTNù) Ah] IPART '/TATER.6. A TAC|( COAÍ 0F EMULSTFTED ASPi{ALT (SL0W-SEn|NG) SHALL BE APPLTED Af fHE FOLLoW|NG -OCÀTC\S:BEFORE PLACING NEW PAVEMEÌJT OVER EXISTING PAVEMENTALONG THE FACE OF ALL EXISTNG PAVEMEÑT. AND ALL SURFACES AGAINST WHICH ASPHALT IS TD BE PLÀCEDBEIWEEN FAVEMENT COURSESPrc ect No./CodeShsN¡mbs 4cDoT ACCESS PERMTT #320024G:NERAT NOTES {2)l ElóJrJfDrcw¡ By:ADMINShd Sub3al:fu ConsiructedOSGMI 18 w6t S¡il' Shæt, Suile 20,1Glenwæd Sprirgs, CO 8ìó01970.945.1004 ww.sgm.inc..om"ffi_scorr:.ru'l¡'l-heOOùiñDe: l/2ê/21td Modficoliôn DoÞ: ì/'2ó,/2021Dwirg Fil€ N!ñe: RifleP¡RdwAdniiAuldod V€r- ?020SGM PrcidNo.: 2019-341.0t2Goli! Córrcl:RN
7. THE FOLLOWING SHALL BE FURNISHED WIIH EACH BITUMINOUS PAVER:A SKI IYPE DEVICE AT LEAST 30 FEEÍ IN LENG-IHSHORT SKI OR SHOE5OO FEET OF CON'ÍROL LINE AND STAKES8. ANY TAYER OF BIIUMINOUS PAVEMENÍ TFIAT IS TO HAVE A SUCCEEDIÑG LAYER PLACED THEREON SHALL BE COMPLEÍEDTO THE FULL AVAILABLE WIDTH WITHìN ËACH PHASE OF CONS'ÍRUCTION BEFORE A SUCCEEDING LAYER IS PLACED.9. WHERE NEw PAVEMENÍ lS TO ABUT EXISTING PAVEMET¡T, THE EXISTING PAVEMENT SI-IALL BE REMOVED -rO À NFJATVERTICAL LINE USING A PAVEMENT_CUTTING SAW OR OTHER METHOD AS APPROVED BY ]HE ENGINEER. THE WORK WILLNOT 8E MEASURED AND PAID FOR SEPARATELY, 8Uf SHATL BE INCLUDED IN THE REMOVAL OF ASPHALT MA-T ITEM ORWORK,10. PRIOR 'TO PLACING IACK COAT OR BITUMINOUS PAVEMENI, IIIE PAVED SURFACE SHALL BE CLEAN, SWEEPING OROTHER CLEANING MET}IODS MAY BE REQUIRED AND WLL NOT BE PAID FOR SEPARAIELY BUT SHALL BE iNCLUDED IN THEWORK. SWEEPJNG SHALL BE DONE WÍTH A PICKUP 8ROOM.DIVISION 600 N/ISCELLANEOUS1. IF COLD WEÁTHER CONCRFTING OPERATIONS ARE ANÏCIPATED FOR THIS PROJECT. ]HESE OPERATIONS SHALL BEPERFORMED IN ACCORDANCE WITH CDOT SIANDARD SPECIFICATIONS SECTIONS 601 AND 203. 'ftIIS COST SHALL BEINCLUDED IN THE WORK.2- ALL SURVEIING NECESSARY TÔ CÔMPLFTE IHE WÔRK SHALL BE DÔNE BY ÏHÉ CÔNÌRACTÔR.3. CONSTRUCTION TRAFFIC CONÍROL SHALL CONFORM TO ]lIE MANUAL ON UNIFORM ÏRAFFIC CONTROL DEVICESCDOT M&S SIANDARDS. THE CONTRACTOR WLL BE REQUIRED TO SUBMIÌ A METHOD OF HAÑDLING TRAFFICTHE ENGINEER FOR APPROVAL FOR EACH ÁPPLICABLE PHASE OF WORK.(MUTCD) AND(MHr) ro4. PERMITTEE SHALL DESIGNATE A CERTIFIED TRAFFIC CONTROL SUPERVISOR (TCS) TO MANAGE CONSTRUCTION SIGNAGE ANDSAFETY OF OPERAÎONS DURING ACÍIVITIES WTHIN COOT RIGHT OF WAY. THE TCS SHALL BE AVAILABLE WHENEVER WORKrs lN PRoGRESS. COST FoR THE ICS SHAr.r BE CONSTDERED TNCEDENTAL TO 630-00016 TRAFFTC CONTROL (SPECTAL)ITEM5. PERMITTEE SHALL ONLY USE 'THE TRAFFIC CONTROL PLANS STAMPED WITH "NOTICE TO PROCEED PLANS _ EXHIBIT A;CDOT SHALL CONCUR WITH ALL OTHER TRAFFIC CONTROL PLANS PRIOR TO'THEM BEING USED ON 'THE HIGHWAY.6. PERMITTEE SHALL REMOVE ALL TRAFFIC CONTROL DEVICES AT THE END OF THE DAY'S CONS-IRUCTION ACTIVITIES, ONWEEKENDS AND HOLIDAYS, UNLESS OTHERWSE DIRECTED BY CDOT.7. fHE CONIRACÎOR SHALL DETERMINE WHERE TO STOCKPILE MATERIAL OR STORE EQUIPMENT FOR THE PROJECT. TRAFFICCONTROL MEASURES REOUIRED TO ACCOMMODATE MATERIAL AND EOUIPMENT STORAGE SHALT BE INCLUDED IN THE MHT.8. THE EÑGINEER OF RECORD IS RESPONSIBLE FOR ALL EROSION CONTROL ELEMENTS.9. IT IS fHE RESPONSIBILIIY OF THE PERMITIEE TO OETERMINE WHICH ENVIRONMENTAL CLEÁRANCES AND/OR REGULATIONSAPPLY TO THE PROJECT, ÀND TO OBTAIN ANY CLEARANCES ÍHAI ARE REQUIRED DIRECTLY FROM THE APPROPRIATEAGENCY PRIOR TO COMMENCIÑG WORK. PLEASE REFER TO OR REOUEST À COPY OF THE CDOT ENV]RONMENTALCLEARANCE INFORMATION SUMMART(ECIS) FOR DEI-AILS. THE ECIS MAY BE OBTAINED FROM CDOT PERMITTING OFFICËSOR MAY BE ACCESSED VIA-THE CDOT PLANNING/CONSÍRUCTION-EIWIRONMENTAL GUIDANCE WEBPAGE FAILURE TO COMPLYWÌTH REGULATORY REQUIREMENTS MAY RESULT IN SUSPENSION OR REVOCATION OF YOUR CDOT PERMTT. OR ENFORCEMENTACTIONS BY OTHER AGENCIES.10. ALL DISCHARGES ARE SUBJECT TO THE PROVISIONS OF THE COLORADO WATER QUALITY ACT AND THE COLORADODISCHARGE PERMIT REGUtATloNs. PRoHIBIIED DISCHARGES INCLUDE SUBSTANCES SUCH AS: WASH WATER, PAINT,AUTOMOTVE FLUIDS, SOLVENTS, OILS, OR SOAPS.UNLESS OTHERWISE IDENÍIFIED BY COOT Oiì THE COLORADO DEPARTMENI OF PUBLIC HEALTH AND ENVIRONMENTAL(CDPHE) WATER QUALITY coNTRoL DIVISIoN (wQcD) As SIGNIFICANT SoURcËs oF PoLLUTANTS To THE WATERS oF THESIATE, 'I]IE FOLLOUNG DISCÈùARGES TO STORMWATER SYSTEMS ARE ALLOWEO WNHOUT A COLORADO DISCHARGE PERMITSISTEM PERMIT: LANDSCAPE lRRlGATloN, DIVERTED STREÁM FLOWS, UNCONTAMINAÍEÐ GROUNDWATER INFILTRATIoN fOSEPARATE STORM SEWERS, DISCHARGES FROM POTAALE WATER SOURCES, FOUNDATION DRAINS, AIR CONDIÍIONCONDENSATION, IRRIGAÍION WATER, SPRINGS, FOOTING DRAINS, WATER LINE FLUSHING, FLOWS FROM RIPARIAN HABITATSAND WETLANOS, AND FLOW FROM FIRE FIGH]ING ACTIVITIES.ANY OTHER DISCHARGES, INCLUDIÑG STORMV'/AÍER DISCHARGES FROM INDUSTRIAL FACIUTY OR CONSTRUCTION SITES, MAYREQUIRE COLORADO DISCHAROE PERMIT SYSIEM PERMITS FROM CDPHE BEFORE WORK BEGINS.Proiect No.,/CodeshærNuñbs 5cDoT ACCESS PERMII #320024GENERAT- NOIES (3)IJLDrcM By:JLAs ConstructedESGMI ì I West Sinh Skd, Su¡le 200Glenwæd Springl CO 8ì ó0ì97O.945.1 OO4 ww.sgminc.comSCOTTl¡il.hRa.OComoule¡ File lnformotion?tiñDe:1/26/21lolMod¡ficol¡or OoÞr l/2ól2o21D'wing Fih Noûe: RiflePiRdwrAdñinAded v€¡. 2020 Sole: A ShwnsGM Proi¿d No.: 2019341.002&olitu Cdlþl:RN
PROJÈCI TOÎA¡Sß æflsTPN55255ût500682424rI1118å3215226É749?36.00119.00¿2q5s11cRel(Â5 CONSIPIANNOADWAYBR1D6EÂs coNsTASCONST PIA'{PUN2ã5S227 t25500s0064242450,940,94d-s418832152?661493:É.0r19.0046295811IINITLFsvrÂCYRRCY$GÂÞAYÄcÁcÀcLBïor\5vSYl¡EÀsÉt¡{sCONIIACT llEllhwJói As¡håltMåeÌ¡êlRffivâlof Grourd SìrnJf, cl ðrs;Ti€d !¡c¿vàtion:omh.¡åt¡rh b¿ddìt4kp¡leÌ@5o¡lÊ¿osioñ lo¡Coî€r&l?àrhoutÈror¡on Control l\¡nnaroÐr lÈCivlìêed¡n! lilãSveìb¡l Cildit{mlrsMulchl¡Rlwæd Fræ)Mulch Taf,iiffffAtrrepk tàseCourls{Cla5s 6)Hot Mir ÂÈÞlBlr{6r¡d¡nÊ5X} ¡751 lPG64-281côncrdr Þwnl t6lnch)Concrete Þwmt i8-lnch)LB lnch iêinforced Cons* Pireta.lôá Rdnlúcëd cðtrcrEb€ñd kdÐ;¡E[ Þône¡ (Clès$ ]];leel SìÊn S!lood l:-ln.h ÊâLrndl{Êort â¡d Eorl{Èl¡rafr¡c Cohr¡ol fsÞ&lslìC9NTÌÆT'TËM IÛ.202.o5026¿D2.00:202ù2-ô0810203.t0000203-01594080{o¿072ó4-002!02ð8.000022Ð8.000¡5208-00207?:?-0ûm62 i2-O00322:3.0004¡2:3-00rÌ61304 û6000493.34752{:2.00600¿:2-00800503-O11aO603.i)50r8€14-0001 1614.Ð1S036e7{O004630.00016hoiect No./Codesh*Nlmbã 6cDoT AccEss PERMTT #320024sAoI dlShftre.]JLDrcwñ By:itShd S!bd:mfu CorstrucfedSSGMI 18 V/esl S¡Íh Skd, Suile 200Glenwæd Sprinqs, CO 8l ó0 ì970.945.1004 ww.sgm.inccomSCOTTlni'@OO(lômÕ'nêr Filê lntırmdti'hPà^tùøtet 1,¡26/216d ^1adili<øtb¡ hþ: 1 /26/202:Drcwinq File None RillePirRdwrAJñhMdVã.2020 5ole: A5hæ¡SGM Prôied Nd: 2019-341.OO2eol¡ry Cdtd: PN
ECR 346 PROPOSED TYPICAL SECTION:SCALE: 1" = 10'IIII2.0' GRAVELSHOULDER20.0'20.o'2.0' GRAVELSHOULDER13.0'13.0'E:1GRADINGT(rrP.) \[''1 GRADING(rYP.)1 .O%2.O%4-rNcH ABC (Ct SS4-|NCH ABC (CLASS 6)6-INCHABC (CLASS 6)GRAVEL PAVEMENTPAVEMENTDEPTH OF GRAVEL UNKNOWNCR 346 EXISTNG TYPICAL SECTION:SCALE: 1" = 10'ftor.o'., sÊED & MULcHCONCRETE DRIVEWAY TYPICAL SECÍION:SCALE: 1" = 10'CLI1.0'GRAVELSHOULDER13.O'13.0'1.O'GRAVELSHOULDERABC (CIASS 6)CONCRETEtrorro'r, SEED & MUL.HPAVEMENT6-|NCH ABC (CLASS 6)CR 346 PROPOSED TYPICAL SECTION:SCALE: 1" = 10'NOTES:,I. CDOT MUST APPROVE THE ASPHALT AND CONCRETE MIX DESIGN PRIOR TO CONSTRUCTION. THE PERMITTEE'SENGTNEER OF RECORD SHALL COORDTNA-IE WTli THE CDOT PERMI UN|T CONTACI PERSON (970-663-6286)TO OBTAIN APPROVAL.2. BREAK PôINT ON SLOPES AND IN BOTTOMS OF DITCHES SHALL 8E ROUNDED DURING CONS]RUCÍION.Prciæt No./CodeshærNumbd 7cDoT ACCEss PERMIï #320024TYPICAI SECTIONSShereJJTDroM By:JLAs ConsirucledgSGMI 18 w*t S¡ih Stæ|, Suiie 200Glenwood Springl CO 8ìó0197O.945.1 OO4 ww-sgminccoñSCOTTìnil.OOCômn'úêr Filê lñtôrmdliônPññùÉ:1/26/21blModìfrcol¡or &Þ: l/2ó1202ìD'wlnq Fll€ Nome RifePRdwlAdniîAeødve¡. 2020 Scole: AsslomSGMPrcidNo.: 2019-34ì.002eoli!turþl:RN
trsAwct TÐOSNÍG ÀSPIIALT20.o'6.0'6.0'coNcREÌEPA\ÆMENT CIYP)-INCH CONCREIEPA!€UÊNtABC,+-lNcHAACPA\jEMENËctAss 612 UFÎS OF SX 75 64-UASPHÁLÎ-CONCREIË IRANSÍIION DEÎALSC L¡r N.T.S.SX 75 6¡+-28SX 75 6,+-2813'ABC Ct SS 6,6PH¡LT DRTVEWAY PAìÆME}ÍT DETALSCrtl.E: N,T.S.Peiæt No./Codeshd!ùmbq IcDol ACCESS PERMTT #320024DETAII-SStudureEn9¡.æ.:llrDrown By:JLAs ConskuctedOSGMI ì I West S¡dh Skæt, Suite 200Glenwcod Springs, CO 8ló0ì970.945.1004 M.sgm-inc.com"å/'scoTTin*':7*lnil.Dob@OComouter File lnformotianP4ñ De: . /2U21ld^4odiffcdio DoÞ: l/2ól2021Drdìng F¡le Nore: Ri¡eFûRdry4dr¡nÀtr@d v€r. :Ð20 S.ol€: Æ SrMSôM Pro¡d Nc.: 20ì99ì.002Oolity Cotul: RtJ
trGrophic ScolelnFeet: I"='l00'El*eSlsRólFpfi:l@Iìolz ÜI -Llt/t/I l3-=--Ê_1L@qNn+no.- F _, I+ --å-¡-o_- *----*- -i++ROAD 346 CENTERLTNE (Ct)Proiæt No./CodeshdNumbs 9cDoT ACCESS PERMTT #320024GEOMETRY PI¡N (I)I nf 3JLxtShd sùbsl:GEOMAs ConstrucfedSSGMI l8 W6l S¡íh Sld, Suite 200Glenwæd Springs, CO 8ló0ì97O.945.100Á. www.sgm-inc.comSCOTTlñit.DobRcv.OCômıutêr F¡lê tnfÕrmdtiôñPddDe. l/26/21tdtüodificdion DoÞ: l2l/2020Dtw¡na File Nome: RllêPifRdq€æmAeod Var. 2020 Scola: k Shown
Grophic ScolelnFeet: l"=100'oq---¿--*olc,|l+lôlûl\5Ll-q ----r-¿!olololol+lFI-..1dlt:r--+,.-Y+ -k--4i------+-ÈUNTY ROAD J46 CENTERLINE (CL)Proiecl No./CcdesdNumhg ì0cDoT ACCEss PERMTT #320024GEOMEIRY PLAN (2)ShdureEnginæñlJtDrown By:¡LGEOMAs Corelructedbied:SSGMI ' I Wst S¡xlh Str€et, Soile 200Gleowood Springs, CO 8ló0ì970.945.100,1 ww.sgm-inc.comltruscorrì'lnii.DoleOOOLodi¡odiffdliÞn DoÞ: l2l2202cDw;ñs F¡|. N.ner RiflCÞRdqtuAtr@d V€-. ?020SGM Prcid No.: 20ì9-341.002Avolilyaodrc: N
tçGrophic Scole0 50 r00 200F#-iln Fæt: l" ='ì00'COUNTY ROAD 346 CEN-IERLINE12CUM/E TABLEDELTAT 1a' 27"4'06' 15"17 52'15"15' 54' 58"BEARINGs8757'20"EsE6'31'1 4"EN7T40'32"ENlJ52'05'$rCHORD2401a'252.32'1736.48'0-55'TANGENT120.11'126.24'878.90'0.28'LENGIH240.19'252.37'1743.54'u_5bRADIUS5964.0E'3523.22'5589.95'2.00'CURVEc1c3c4z*Fê1011ACCESS DRIVEWAY CENTERLINE (CL)LINE IABlr: AUGNMENTSEND PI. (N,E)1 626JJ0.81,2378959.661 626330.65,2378967.251 62631E-60,2379240.991 62631 2.1 9,2J79503.961 626J1 4.09,237962E.0J1 626325.62,2379857.511 626341 .77 ,23aOO7 1 .1 01 626352.32,234O 1 45.421 626360.57,238024S.431 626EE4.07,2381990-941 626E26.46,2381 555.691 626833.40,2381554.89START PT. (N,E)1 626352.9 4,237 427 6.7 51 626330.81,2376959.661 626320.64,237 9207.221 62631 2.OA,237 9493.231 62631 2. I 9,2379503.961 62631 4.09,2379628.031 626325.62,2579E57.5 11 626341 .77 ,23AOO71 .101 626352.32,23801 85.821 626848.66.2381 91 5.901 626698.75,23E1 606.E41 626627.00,2381 555.55LENGIH683.27'7-59'33.84'10.73'124.O9'229.77'21+-19'115-21'64.14'82.98'137.5E'6.43'BEARINGsEE oE'37'Es88'46'34"Es86-28'07"EN89'2s'38"EN89'07'26"ENA7'07'22"8N85.40'31 "ENE4'44'44"EN8?36'39"EN64:44'24"EN21'49'34vN5'54'36"WLINEL1aL3L4L5L6L7LALS110L1'1L12XProiect No.,/Codeshær Nunbs 'l 1cDoT ACCEss PERMTT #320024GEOMEÏRY PIAN (3)5ub6d Sh*:3ol3EnginænitI.JLShd S!¡EdlGEOMAs ConslrucbdESGMI18 Wst S¡ñh Std, Suib 200Glenwood Springs, CO 8ló0ì970.9 45.1 0O4 M.'gñ.inc.com/tl7lscorrìm'ùle@OOaôm^"i-r Filà lñlôrñdtiôñPnñ ùÈ 1 /26/21Lod iô.¿ilidúoâ Doþt 1 2/7 / 2020D6rìng Fib Noñe: R¡flêPilkwyGonAulæodv€r- 2020 kolè: ÆShowSGM Proid No.: 201 9-341 .002Guolily Conbl: RN
trhoiea No./CodeShsNumber 12cDot AccEss PERMTT #320024P|AN & PROFfl-E (ì)JJIEng¡nær:Droø 8y:JIAs ConÉructedgSGMI I 8 \ rest Sixtlì Shæt, Suite 200Glenwood Springs, CO 81ó0ì970.945.1004 ww.sgmjnc.comJÆISCOTTi.,. -lnirOOO- - - I-QLB--T-QL8---r oLB- - - l-oLB(-ôñarfer Fib lñtôrmdtiònGrophic Scoleln Fæl: l' = 50'0 25 50 100Irrt--icoNc.sE6rl.lsr)(56E TON)T_ OLB_QL8-oL8PA\Er¡Elfr (1898o/ER 6-|NCH Á8C (CL6)SHOUI.¡ER4-|NCH A8C (CL6) (15 îON)346 CLEr. Edg. of RoodOF COIICREIEOi SHOUI..DER.+-rNcH ABc (cL6) (ls TON)rRÁ¡{smoN (srE DErÀL)(57 Sr ÁSPHALT)x-SHOULDERSTÀ2+,ta.12CONSIRU¿"llONeo@+J53005J905JE5U3I, 5JE5FINISHÐ GRADE0.18n53AO ---5580Ð(SIING GRADE55755J75SCALE:HoRZ: 1"=5t'VER-T:1'=10'srTg2+002+5A3+OO3+50,++00++505+005+l) 8+OOCOUW ROAD 346 CL PROFIT.E6+507+OO7+5t)8+0O8+50s+oo 9+25ooqñoÉe3d:-aHrooqñ6óoqôioo\-@Ðmooq-ðnoouì-onoó6Éodtsoo886îBFì.i\cioooÐoooorÈ:o@oofsEE3Ên i/toooollcioooóooocio1oooalnilDe:1/2ö/21Lon ^MiÍi<otiû Oote: 1 2/7 /2)2ODowiñq File Noñ€: Rille,FRdq+PAulocod V€r. 2C20 Scolo: As ShoqSGM Proiæ No.: 201934ì.002Ololiry aonbl R.,l
Proiect No.,/CodeshdNùñhq I 3NP-OLDcDoT ACCESS PERMTT #320024P|.AN & PROFil.E (2)IJLEnginær:Drcwn By:JJtAs ConslrucledESGMI l8 Wst S¡xth St@|, Suib 200Glenwood Springs, CO 8ìó0ì970.945.1004 w.sgminc.comNP-eLo_,/-/iscorrmlnit.OOO-(-ômôulêr l-ílÞ lñtôrmdliônDñinq File Nome: RìfleP¡lRdwrPPPàù ùte: 1 /26/21Lod^4odifi6lion hÞ: l217/2020Aulcodv€r. 2020 kole: ÀshonSGM Proied No.: 201 9.341 .002tuoliry Conbl: RN5,+ô CL(f6 roN)oF coNcREÍEEr. Edgo ofEr. 3o-lnch,t-lNcH AacOF SHOUT-DER(î6s sr)ÂSPHÂLT539553905395EXSNNC GRÁDE5390538555AOp375|:oo538s53AOSCALE:n5O-INCH RCPCULìÆMHORZ: 1i=50']GRADE (FC)VERT: f i=1O'9+25 9+t)10+0010+501 1+00I t+5012+00't2+50 13+00COUNIY ROÁD 5¡I5 CL PROFILE13+501,++00'1,++5()1 5+0015+5016+00 16+25qúiogsfrBøo0oÐo0'! úioo:rioÞooqúioooo-s3oo\r;ooooooo+:ooq+oÐooolENPgB8oo\rioÑFqÉi6o0!ì riootriooñ1düB irioooñ:Éioooqrioool r;ooqñoÐ6ooñìñs6ñooù?ñoo't .,Jo0iìñlnFæt:I"=50'Grophic Scole,r-rNcH ABC (CL6) (rJo/s 55.19'L11+70.,+OSTA1 Io/so/s rJ,oo'L8-tNCHPCo/sstÀAP$Àsr)(605 roN)PNTI t +118.1 1RAD PNII 1+65.9130. CULVERTo/s r5.00'L12+01.O1PÎ32-t1'LPC15.99'LPAVEUE'¡I (2022o/ER 6-|NCH ABC (CL6)o/s r7.96'LAP
EIP<iect lro./Codesld ññbd 1¿IIPIAN & PROFil.E (3)cDoT ACCESS PERMIT #320024ILsfrd SubsllrAs ConstructedSSGMì l8 W6l S¡íh Srd. Su¡le 200Glenwæd SprñgE CO 8ló01970.945.100¿ ww.sgminc-com'ry:iSCOTTtr.,l¡ì1.heRev.@OOOComouter File lnformolionNP-ûLDDûwing Fih Mñe: RillePiRdryPP0s roN),+-tNcH A8CPA\EMENT (1950 SY)OER 6-|NCH A8C (CL6) (5E+ TON)E-INCHã.¡-70 tlBt-70 ll8EDGE OF4-rNcH ABc (cL6) (15 lON)ÊdE6 of RoodEr.RCPEt.SHOUI.-DEREDGE OF SIIOULDERcR 3+65:t955:t9055E555E0s37ãrúi5595559'554555æF7516+mf 6+50't7-001 7+5018r{Ot8+5019+0019+50 20+00COUNTY ROAD J,+6 CL PROFII-E20+502t+(x)2r+5022+OO22+æ23+00F€GMDE (FG)Ð(ISIING GMDEsc¡{.E:FIORZ: l"=50'VERT: 1"=10'JO-INCH RCPCULVERTÐ(STINGa.ulñNúoFÐÌñtsooÐoóonÈtsóoÐoo(ìñF@@Ð6FúIB irt-ñN6ónoqñ6neñF@ondqoF!6ooóideBiioo|:ñ6rot;i9oñBú'tsts(ì <to@€nooÈont(jo@6Ðon<ioæQÐ6aldoooq<;oÐ66N-doÐEE6ooq<ioóÉÞPgoæon6qúioúúqúto@o\don6qút66PtiñÞe. 1/26/21Los ModificÈl¡o1 tuþ: l2122020Aulocodver- 2ü0 Scole: AsShownSGM Prcid No.: 2019-341.æ2Guol'ty tubl R!
IshdNunbø 'l 5Proiect No.,/Code_ _ NP_CÍLDNP_QLDNP-OLD4 ol55ub6d5h*:ln Fæl l" = 50'GrophicCDOT ACCESS PERMIT #320024PIAN & PROFTLE {4)JIEnginæilJrShd Slbsêllfu ConslrucledSSGM118 wesl Sixlh Stæt, Suite 200Glenwood SpringE CO 8ìó0197O.945.1OC/' M.sgminc.comSCOTTìnit.,+-rNcH ABC (CL6) (16 roN)R-O.W.sHouL¡EREr. Edg. of R@dùle@-O(-Comouter File lnformolionPtiù ùÈ: 1 /26/21;GMProid No.: 2019-34ì.002eoliv cdbl RNAdcodv€r. 2020 Scols: A6ShMb$Modiftcol¡o. tuþ: l2l7/2O20DwìnsF¡leNofre Rìlle?HdryPPE(. Jo-lnchCR 3,+6 CLP VEXENT (2022 s0ovER 6-|NCH ABC (CL6) (ôos rON)3o-lnch CMPA-NCHsHout¡ER,f-rNcH ABC (CL6) (16 TON)EDGE OFEDCE OFt-70 *Es,aoo539555905385s5%r?rlÌ5¡lO055955J905J85FINISHED GRADEo-17'i.itt,Ð(SNNG CRADEHORZ: 1"=50'VERI: 1"=10'3o-tNcH cuPCULVER'T23+0023+5f'21+OO2¡t+5025+0025+5026+00 26+50 27+OOCôUNW RôÁD 3,46 CL PROFILF27+5028+OO28+5t)29+0029+503{)+00qdooedooËrfÈËPB'! ú;qdiooo6:digs.:doÐ9Sqdooqó6oo=oãÉBi;oooooedldËrd9Bidf?do8fiN-fimefioafrmooNOndiø@PS.!óoo-ñooooqñ00o@qño@ogolññ6ooorqñFælño+\ñ
EPROPOSEDGrophic ScoleDRIVÉVAY(sEE DRTVEWAY P|-AN & PRoFILE)FËldI6-tNCHGRAVELSHOULDERPA\EMENT (i4i,t sl)G-rNcH ABc (cL6) (.+:'2 TON)4-INCH Aæo ToN)ln Feet: l'= 50'Coñcrota*-_-NP-OLD---]]-.:---+-3¡t6 CLOF CONCRETE,+-INCHEt. 3o-lnchEND CONSTRUCIIONSHOULDERABC (cL6) (il ToN)OF SHOUI.DEREND TYPICALE . Edgc of RoodsTÀ35+00.005,1Ð05.+00H53e5 ÉUedoFINISHED GRADE5390GRADE (EG)5Jð5 ----- *SCALE:HORZ: 1"=50'VERT. f"=rO,\.:-ÐlsltNcJO-INCH RCPCULVERT3580,ioJO+0050+5031+003t+5032+0052+50 33+00COUNTY RO D 5/+6 CL PROFTE33+503¡++003.++5035+00 55+25ogdooo:6:oonoaÈoEB69oi6ú¡ d;'q dio@4oiøooqoio@ooo:d;o€690o:o6ol o;odf;ËoooqdiónooFEdPEHıesËß iríoodFúì dioo.l: dioo:dDPrjeci l.lo./CodeshærNlnbs 1 ócDoT ACCESS PERMTT #320024P|-AN & PROFil.E (5)LDroM By:J-As ConslructedSSGMI l8 West Sixth Shæt, Suite 200Glenwood Springs, CC 8ìó0197O.945.10O4 M-€m-inc.com,,'nry¡rscorri;ät'ï'lnit.OOComouter File lnformolionhntDoÈ:todi¡od¡ficdci Doþ: lt,/7/2020Dowinq File N.úe: RifletFRdq+PSMPro¡dN..: 20ì9i¿ì.092Golitu Coñbl:Rt¡
tIIzIÐÞIIzIa0IIIr'jiiSTA.f +,+.l.t329.t9'R!N: 53E6.15'IIIz!¡Þ-0I +57.JE28.82'RtN 55E6.15'NOIE¡1. CONÌRACÎOR 10 RESHÁFE DfrcH ASNECESSARI TO PROVIDE ADEOUA1E FLOWTHROUGH lE'CULIERÍS.2. P|PE t-ENGm, SLOPE SrAïONS, OfïSEfS,AND IIi{VERTS ARE TO END OF PIPECONCRETE VATI.EIP t{ vrfl}ilN cDol R.o.w.F4 SlÄ"1+30.06Þvr ÊrEv-5389.90oqo+IK=+241CRADE (FG)5¡[0O539553905JE55.+{X)53955J905Ja5SCALE:VERI: 1"=20'ı. RCPqGR^DE (EG)'r+00.28 1+20 1+60DRN/ÉIÙAY CL PROFILE:2+00ô@6o': úiúÐo'! ú;o@oñoildonooo1<io@6ldioProiect No./CodeNo:Code:Sheet Number: 17CDOT ACCESS PERMIT #320024DRIVEWAY PIAN & PROFITESubsd Shæh:loflStuclureNumberclJr.)rown Bv:JJI.;hd subsel:As ConstructedNo Revis¡ons:Revised:SSGMI 18 Wsr Sixth Std, Suite 200Glenwood Springs, CO 81ô01970.945.10C4 ww.sgmjnc.comPCSTA.o/s 9¡1.92'LsfÀo/s 53.2/LPCCSTÀo/sl+159.35'of59¿9'olRCP ORCP Oo.oFIBEGINDRTVÉTAYo/s 0.00'Er, EdgcAc6EDGE^ccEssEr. 50'PCSTÀo/sSCOTTlnitCohhe¡lsDRrtiÉïú Y GEOMEIRI - CURVE TABI,.ECHORD LENGTH42.34'1 4.00'34.19'RAÐIUS POINTNsS1 4'00"EN4A05'45"EN1 {07'26"Es65.33'Os"EDELTA00a30'4J"005- 1 4'1 7"055.29'06"09J28'02"RADIUS245.24153-lE'36.72'43.7 4'LENGfH42-37'14.00'15.5b71.35'CURVE #c2c3c4DobRev.O--Computer File lnlormot¡on1 /tA/)1tosl Modìf¡cdion Doþ: 12/7/2020Drow¡nq File NomelRi{lêPirÐwoyPPAtuod ver. 2020 Scole: As Shown unih: EnolishSGMProiætNo.: 2019-341.002 GuıliþCônhôl: RN
Projecl No./CoC:sl-d Nümbd 'l 6cDoT ACCESS PERMÏ #320024TRAFFIC CONïRO|" (l)ttEnginær:Drown By:JIfcfu ConsirucledTAPERSSGMI l8 Wðr s¡xtl- Sked, S0ile 203Glenwd Sprirgs, CO 8ì ó0ì97O.9¿5.1 OO4 M-sgminc..om10'scolTlnir.Dob@OO-Grophic Scole- - - NP_QLD -!:-013---l_QL8*__T_OLB-.rLÞ___T-QLB-oLB---tofNP_Q-DEdg.OLDNP____NP_QLD___CR 5,+6 CLNP-OLO_--NP_QLD.fEMPORÁRITRÆHC SreNÂLCOUif'Y MD J.6-l<-..>miroaaCTIANNEUZING D[\1CEs0' sP crNc (r!P.)NP*OLD _ _ -- - NP-QLD _+.->(24xJ6)(36x36)w20-1(36X3e)NP-atD - - -_ - NP-OLD _---T-QLB--_T -QLB---T-OLB- - - T-qFEFær:_t,:50trs _- - I_QLBW20-¡+(56xJ6)f#'llffdllnroltâR10-6Er. Wotêr Linc2. IMUZE SAI¡E 'IRÁFFIC CONIROL CINFIGURANON WHENCONSIRLCNNG WESIBOUND TANE+->_uLú___l_cLB- ----llF- ----i-9---QLB--*T*QLB***--018---T-OLB---T-018-__TNOTES:1. AII 1RAFFIC CONIROL TO BE PER CDOT 5-630-1,s-630-2 Ar{D THE MI,ICDG-mlßr-Es¿illoRR'{ rnrnc coNrRoN- s¡elO DRUMm woRKzoNEComoule¡ File lnformolionPtiñùÉ:1/2ê/21LdMod¡f¡d¡or Doþ: ì71012020DEwiog File N.ñe iilb?ffidwrTrcffic Co.trclAul*od vêr. 2020 Scole: Às SlenSGM PrcidNo.: 2019.341.0(¿Grolito Cdb[ RN
EProiect No.,/CodeshæiNuñbs 19cDoT ACCESS PERMTT #320024TRAFFTC CONTROT- (2)By:JJIJ.JtAs Constructed9sovI l8 West Sìih Shæt, Suite 200Glenwood Springs, CO 8ìó01970.945.1004 ww.sgmìnc.coñ-rmlscorri,,,ùleOOOComouler File lnformolionlrì*Þae'. 1/26/2\bd^ed¡ffcation hÞ: l2l10/2020Dowins Fìl€ None RìÍeP¡RdryTGí¡c CoitôlAdocodve'. 2020 Scole: AsShmSGM P.o¡d No.r 2019-341.002auolit cdbl RNltt-70 wBCOUNIY ROAD 5.16NP-QLDNP-OLÐo-\NP-OLONP.OLDNP-ftD___NP-OLD----NP-OLD---- - - N%=ûtÐNP_QLDCR 3,f6- - NP-QLD_ _ NP_QLD--+\-- - - NP_OLD---Np-oLD--_iì-"-:l-:---NP-oLo---Np-eLD---NP-QLD---NP-oLD---NP-QLD---rY__uLD\\ - - - NP-QLD- - - ñp-ciio- - - NP-oLD - - - NP-QLD - - - NP-QLD- - -Grophic ScoleitNP_QLDNP_OLD++ROAD J46X- X-X-X-X_X_Feet: lcR 346NOTES:1. ATI ÌRAÍT|C CONTROL TO BE PER CDof S-6JO-1,s-630-2 AND'fHE MUICD2. IMUZE SAT¡E TRÆFIC CONIROL CONFIGURATION WHENCONSIRUC'IING WESÎBOUND I¡NEtExr-HfitrJ'Rlo*{ rnornc cor{TRoL srcNO DRUUW woRK¿oNE- - - NP-OLD- - - NP-OLo - - -- _ - NP_QLD _ - - NP_QLD- _ _
rl1P'oiect No./CodeSlæ.Numhq 20TRAFRC CONTROT. (3)CDOT ACCESS PERMIT #320024"LLDrcM 8y:ILtafu Con¡tructedSSGMI I I W6t Sixth Srd, Suile 200GÞnwæd Sprinss, CO 8ìó0ì970.945.1004 M.sgm-inc.com1truis€oTTl"m'ln¡1.DdeRev.-O-Comn,¡tar F¡lp l¡form¡tianNOIES:1. Àl ïRAtFlC CONTROL TO È pER CDOT 5-630-1,s-6J0-2 At¡D tHE MUÎCD2. IMUZE S{¡E TRAFFIC COÀfTROL CONFIôURAÎON IYHENCONSTRUCTING IIESIEOUND LANE)c€Þpf icGroìtCOUNTY ROAD 3¡+6--x--X--xìlllCR 3,16NP-QLONP-OLC++---NP=QLD-__I]P-{LD.- - - Np-eLD - - - Np-f,r' - - -- IìF:.t¡3 -- - -¡,F--S.,3 - - - ,ÌF.3..8 - - - ilF-..r,3-- -l -- lS SrgT:--l=t2Lt-70 tvB\NP_QLCNP_OLDl*fIl_+-III",_il'"-lJ'NP_ALDNP_QLDNP_GLDNP_OLD---NP_QLDNP-QLD40'n o-ñr D - - - NP-QLD - - -.|¡-!'L-D - - - NP-oLD - - - NP-QLD - -N;-OtD- - -NP-oLD - - - NP-qLu- - - NP-QLD- - -NP-OLD- -_ _ NP_QLDNP_OLD---NP_OLDNP_QLDNP_QLD1(X,' TAPER.lO'500'5{x)'I_)Þ-l/ couñrv RoÀ1 3¡+6tt----l¡---<-++J.t---x --x___X -_X __X -_XüEfr-ffi*,ffif*{ rumc coNTnoL srcl. DRUMm rrcRKzoNECR J¡t6(36xr8)(36x38)til:¿o-+(36X38)(36x36)t-70 ÍlBSIOPaaaPÂúDotet 1/?6/21LodModilicol¡ol tub: l2lì0,/?020Aukod V€r- 2e0 S.ole: .As SlomSGM Proid M.: 2019341.OO2Goliry cdbl RN
Er. STE DESCR¡PTIONThe Conlroclor sholl compfy with oll CDOT conlrocluql requ¡rements ossociqted wilh the CDPS-SCP on this prcject. The SWMPAdmin¡slrolor sholl updote lo reflecl curent project s¡te condit¡ons.A. PROJECT SITE LOCAÍON: S. M¡dlond Ave. from 27th Slreel to êMile Rd. Glenwood Springs, Gorf¡eld County. COPROJECT SITÊ DESCRIPTION: The p@jecl includes rood reconslrucl¡on, ond conslruclign of o new occess drivewoy on the northside of CR 34ó. The ex¡sling grqvel roodwqy will be reploced ìn k¡nd with concrete pqvemenl.B.@:Cleoring ond grubbìng {divewoy)Roodwoy Excqvot¡on/Grodin gRoodwoy Concrete PovingDrìvewqy Concrele PqvingShoulderingResloroiionC. ACRES OF DISfURBANCE:Totol oreq of conslruci¡on site {lOC): 4,0 ocresTotol oreq of proposed disturbonce {LDA): 3.19 ocresTotol oreo of seeding: 0,94 ocresTolol oreo of imperyious surfoce: 2.23 ocreslotol qreo of NEw imperyious surfoce: 2.25 ocres {0.02 ocre increose)EXISTINGSOILDATA: FromUSDAwebSoilSurvey: Hqloqueptsll9.2Td.HeldtCloyLodñ(47.7%,OlneyLoom(33.1%)D. EXISIING VEGEfAnON, INCLUDING PERCENI COVER: During design the SWMP Adm¡nisirolor lor Design in consultot¡on with lheEng¡neer willde'term¡ne if the SWMP Adminislrolor for Design or the SWMP Adminìsfotorwillconduct the Vegelotion Tronseclsos oullined in Chopler 4.1 1.2 of lhe CDOT Erosion Control ond slomwoter Quolily Guìde.Pre-Conslrucl¡on Dote of suryey: - %Density: -Descriprion of existing vegetotion:Mqp or toble showing trqnsect locolions in SwMP notebook tob l7:Post-Construclion Dote of suruey: - %Density: -Descr¡ption of ex¡sting vegelol¡on: Dqte of CDPS-SCP Closure: -Mop or toble showìng tronsecl locqtions in SWMP nolebook tob l7:8.@seetheero5ioncont¡olqnd5it9lqyoUtplqnsforlimi.lsofdi5tUrbqnce'C.l!B4!l2E.l:UL NPI!!!See lhe erosìon conlrolond site loyouf plons for lim¡is ot dislurbonce.D. LOCATION OF ALL SIRUCÍURAL BMPS IDENTIFIED lN THE SWMP Slructurol BMP'S ore locoled on lhe eros¡on confol plons.E. LOCATION OF NON-STRUCTURAL BMPS AS APPLICABLE lN IHE SWMP Non-Slruclurol BMP'5 ore locoted on the erosion controlplons.F. SPR¡NGS, STREAMS, WEILANDS AND OTHER SURFACE WATER NAc. PROTECTION OF TREES, SHRUBS, CUTTURAL RESOURCES AND MATURE VEGETAÍION Trees qnd vegelol¡on lo be prolecled will beos directed by CDOt ond w¡ll be idenlified ol lhe preconstruct¡on conference orinitiol conshuciion meeling,H. AREAS IjSED FOR STORING AND S,IOCKPITING OF MATERIALS, STAGING AREAS (f¡e|d tTo¡Ielfue|inq,e|cI oNd BATCH PLAN.ÍSThese oreos will be identified by the conlroctor ond subjecl to qpprovol by CDOT.3.@A. SWMP ADMINISTRAIOR FOR DESIGN:Conlocl lntmot¡on970-945-1 004 / ong¡ef @sgm-¡nc.comNqme/litleAng¡e towlel P,E. / woter Quolity Engineer!]@¡!tb¡gl!gþI fotç9!$Igctio4: (45 defined ìn Subsecl¡on 208J The Controctor sholldes¡gnote o SWMP Admin¡strolorforConslruclìon upon co-permitee of lhe permit. The SWMP Adminisfotor sholl become the operotor for lhe SWMP ond o$umeresponsibility for oll design chonges lo lhe SWMP ìmplemenlqtion qnd moinlenonce in occordonce to 208.03, the SWMP shollremoìn the property of CDOI. The SWMP Adm¡nislrotor for Conslruclion sholl be responsible for lmplemenling, mq¡nloiningond revising SWMP, including the title qnd conlocl ¡nfomolion. The octivil¡es ond responsibilities of lhe SWMP Adm¡nistrqtorfor Construclìon sholl oddress oll qspecls of the projecl's SWMP. {updqte the infomqtion below for eoch newSWMPAdm¡nìslrolor for Construction) {Copy of TECS Cerlificotion must qlso be included in the SWMP.}B.For o complete list of oll stomwoler outfolls see lhe droinoge tobulot¡on sheets within the plqn set.2. Nomes of receiving woter(sJ on sile: NA3. Ultimote receiving woler: Colorodo RiverHorizonlol dislonce neoresl woler of lhe slote is from p@jecl: 3'l0O feetl. NON-STORMWAIER DISCHARGES: Polenl¡ol dewotedng' of excovqlions for construction of reto¡ning wolls ond culverlextensionsALLOWABLE: Refer lo CDPHE Low Risk D¡schorge Guidonce Document of tJnconlom¡noled Groundwo'ler lo LondhttÞs://M.colorodo.qov/Þocific/siies/defoult/files/wQ%20LOw%20RlSK%20Gw.odf*lf groundwoter does not meet woler quolity stondords for receiving woter o seporole CDPS Dewoierìng pemìt shqll beobtoìned by the Conlroctor from CDPHE ¡n occordonce with subsections 107-02 ond I 07.25.2. SÍTE IúAP COMPONENTS:Pre-construclionA. PROJECT CONSTRUCIION POÍENTIAI SIIE BOUNDARIES Construction boundories ore generolly contoined wilh¡n fie |imiß ofd¡sturbonce qreos. Equipment ond moteriol sloging moy olso occur on exisling groveled ond disturbed oreos within theproperty limits. See lhe erosion control ond site loyoul plqns for qdd¡lionol ¡nformof¡on.Enginær ApprovolStort DqteCêrlificotìlon #Contocl lnfomofion (phom & amoil)Nqme/I¡tbC. EROSION COñTROL INSPECTOR: lAs defined in Subsection 208) The Controclor moy des¡gnofe qn Erosion Conlrol lnspeclor.The Erosion Control lnspector shqll complete dulies in occordonce wilh subsection 208.03 (c) (Copy of TECS Certificot¡on muslolso be ¡ncluded in the SWMP,)¡1. SIORJIIWAIER MANAGEMENI CONÍROU¡ FlRllI CONSIRUCTION ACtlVlllESTHE CONTRACTOR SHATI PERFORM THE FOIIOWING:A. POTENTIAL POLLUTANT SOURCESEvoluote. idenlify locote ond describe oll polent¡ol sources of pollutonls ot the sile in occordonce wilh subseclion 107.25CDPS-SCP ond ploce ¡n the SWMP nolebook. All control meosures reloted lo polentiol pollulonts sholl be shown on lheSwMP sìte mop by the Conlroctors swMP Admin¡strotor for Conslruct¡on.B. OFFSÍTE DRAINAGE f RUN ON WATERIDescdbe and rgcord conlrol meosures on lhe SWMP Site Mop thqt hqve þeen implemenled lo oddress off sile run-onwoter in occordonce wìlh subsection 208.03.C, VEHICTETRACKING PAD/VEHICLETRACKINGCONTROLConlrol meosures shqll be Ìmplemenled in occordqnce with subseclion 208.04.E.POTENTIAL POLLUIANTS SOURCES:shqll prepqre o l¡st of qll potentiolBSEjyING]!¿JEE:locotiôns: Côlôrôdo RivêrSee First Conslrucl¡on Activilies under Poleniiol Pollutont Sources. The SWMP Administrotorpollutonts ond lhe¡r locolions in occordonce with subsect¡gn 107.25.F.OutfollProject No./CodeShætNumber 21CDOT ACCESS PERMIT #320024swMP (r)tubd Sh€êb:I ôf 5ShtrENumbecJJLEngn€€r:D€M gy:JJLShÉet Subs6t:SWMPAs ConstructedNo R€v¡sions:Rwisd:SSGM'1 II West S¡nh St@t, Suite 200clenwood Springs, CO 81601970.945.1004 ww.sgm-inc.@mSCOTTlnit.ComhøßDatèO-Cômôrltêr F¡lê lnfômâl¡ônP¡ìnt Oate: 1/26/21Læt Modiiøtion Oat€: 12nl2020D€dng File Name: RiflePit-Rdry-SWMPtul@dv€r. 2020 5@16: Asshwn;GM Prcjd No.: 2019-341.002Quality Conht RN
ID. PERIÀ'iEIERCOI.,TROLì. Perimelerconlrolsoll be estcbl¡shed qs the f¡ßt ¡tem on the SWMP to prevenl lhe potenl¡ol for pollulonts leoving lheconsfrLcl¡on site boundoñes, er¡ìering lhe stormwoter droinoge system, or dischqrging lo stqte wole6. Perimeler controlsholl be in occordonce wilh subsecticn 208.04,2. Perime ter control nqy consist of berms, s¡lt fence, erciion logs, existing londforms, or other :oñfrol meosur€s osqppfoved5. pu¡lNc CONSTRT¡CT|ONRES'ONSlBlLlTl:S OF THE SWMP Acln¡nis-rolor for ConstructionfheSrvMPiso"livìngcocumenl"iaqtisconlinuouslyreviewedondmodifiedthroughoullheconsfruci¡onphosing. DJringconslruclion,the following items shqll be odded, updqled, or omended os needed by the SWMP Âdministrotor for ConsÌruction in occardonce withsubsectìon 208.03.Durìng .onstrucfion, indicqte how iterc thq- hoE not been oddresæd during design ore being hondled in construction. lf ¡lems oreco!ergd ¡n lhe lerplote or otherseclions oi lhe SwMP, ind¡cole belowwhol section lhe d¡scussion tokes ploce.À STOCIeILE |,IANAGEMENT Shol be done in occordonce with subsæ'tion 107.25 qnd 208.07.B- CONCRETEWÀSHOUT:ConcreÌ3woshortwoterorwoslefromfieldloboroloriesondpovingequipmenlshoubeconloinedinocccrdorce with subsection ?08.05.C. SAW CUTTING: shtrll be dore ¡n occordonce with subseciion 1O7.25,2æ.01,2O8.O5.D. SfREEISWEEPING: sholl be done in occordonce with subseclion 208.04.6. INSPECTIONSÀ lnspecl¡ons sholl be in ocærdoice wilh subseclion 208.03 (cj.7. CONIROI TAEA:IU¡E MAINIB{ANCEÀ Mo¡nlenonce sholl be il æcordonce with subseclion 208,04 (f).8. RECOTD XEEPINGA Records shqll be kepl ¡n occorconce witl- subsection 208.03 ld).t. INIERIM, PETMANËNT SIAIIUZATION od LONG IERM STOR vltlATEn MANAGEI,IENIThe Colhoclorshdl complywilh fllint"rim slqbilzotion qnd pemqænt sfobil¡zolion requ¡remenls in occordonce wilh subsecl¡on208.04{eJ.A. SEEDII.E PLANSeeding v/ill be reqL¡red for ú estiroted 0.ç4 ocres of disluóed oreo within ïhe project lim¡ls wh¡ch ore nol surfocec. Thefolbwing seeding mixture is based on Gorfieid County Specificol¡ons. llË Controclor sholl vedty wilh lhe CÕunty tho- lhis seedingmix is opproprÍole fq pþjecl-The lollo\ing t/pes ond rotes sholl be used:LBS. PLS PERACREt7-o16,010.o10.o10.010.06.05.0ã04.0LOLOzo1.025.OBOTAJ'¡ICAI NAMEOryzops¡s HymcnoacsFcatuco ldohænsisChrysothomnG N@aroususPsudor€gnerlo S¡rcoto ln8moPsudorsgn€rio SÉcqtqPoscopyrum Sm¡thäLeymus C¡nereusA.temesio TrideñtotoPoo SecundoBoutelous Curlipendulostìpo ComotoBoule¡ouo Grocif,sHilorio JomesiiE mus Elymoidos@MMONNAMElr¡dion Ricrgrcæl&ho FcacucRobbilbru!hB€ordl68 Blu€bunch lvhætgns9Bl!ecunch \¡eheotgrqssWeslern WheotgrossBosh WildryeMounloin SogeSondberg's BluegrÈssSide-Ooh GrômoNèeCle ond -hreolBlle GromoGqlletoBott.brush SquircltoílfolAtB. SEEDING APPLICATION: Dfill seed 0.25 inch to 0.5 inch ¡nlo the so¡|. ln smoll oræs not qccessible fo o drill, l-fnd bødcet orhydroseedoldcublelherqleondr.ke0.25¡nchlo0.5¡nchinlothesoilpersbsectÌon2l2. So¡lcompqctbnsnolbemin¡mized for qreos where permqnenl slobilizql¡on willbe och¡eved lhrough "egeto'tive cover.C. MULCHING APPLICATION: Apply o m nimum of 2lons of cert¡fred weed free notive hoy ot2112lús ol ceñigc €ed fræshow per ocre oñd ¡n occordonce wilh Section 213, ond mechqn¡colly crjmp it ìnto lhe soilin ccmbinol¡$ wlh on orgcn¡cmulch lockifier.l. Pdcr to winter shutdown or the summer seeding window closure: L¡ncomp¡eled slopes sholl be muldEd wiah 21oß ofmulching (weed free) per qcre, mechon¡cqlly crimped into the lopso¡l in combinqtion with qn orgonic mubh tockifis persubseclions 208 ond 213.D. !!.EçIALE.EçI.U!Eq4.E¡ID,:l. Due lo high foilure rotes, hydroieeding will not be ollowed for pemonenl slobilizotion.E. SOlt CONDnONNG AND FERTILIZER REQUIREMENTS: Minimum requ¡rements for oll d¡siurbonces lo rec"ive =ed ng f not¡vÈ).5o¡l ccñditioner poid td os ttem 21 2-So¡l Condilior¡ng (AcÊ)Sproy on Añendænt(lbs/ære)>2:l rloFet onv35C0Compost lc\6/ocre)All orær <2:l{l/2 inch depth)¿5Humole{lbs/ocret200Bìologicolnulriert orgon cbosed fedifÈsllbs/ocre)*300'E¡ologicol nufienl shqll not exceed 8€€ (N-P-KJ,Humole sholl be in occotdonce lo2'2.02. Humole ond composl shol olso be opproved by Gorfield Cowly.F. SOII RETENTION COVERING: On slopes ond ditches requ¡ring o blonkel or lurf reìnforcemenl mot {tm), the tr¡qn<"i/lm sholl bepbced ir lieu o' mulch ond mulch tùckilier ond ploced ofler seed¡ng (nqtive). see Erosion Conhol Plon fcr blqnkef/lrmlæolions.G. RESEEDING OPERA'IlONS/CORRECTVÊ STABILIZATIONPrjor lo pqrtiol occeptqnce.l. Seeded oreqs sholl be reviewed dJring the 7 doy inspect¡ons by the SWMP Administrotor for Conslrrcl¡cn ord orEros¡ø Conlrol lnspeciorfor bore roils coused by surfoce orwind e.osion. 3ore ıreos coused oy lurfoce or gully erosion,bloM owoy mulch, etc. sholl be r+groded, seeded, ond hove the desigroted mulching opplied os lEësy, ol n3oddiUonol cosl lo lhe project.2. The ConlEclor sholl moìnto¡n seed¡ng/mu¡ch/lockifier/blqnket/TRM, mow lo control weedi or oppll he¡bicide loconlrolweeds in lhe seeded orec unt¡l Pqrt¡ql Acceptonce of lhe stomKter consfuclion rcrk.I 0. Pnþt to PtoJEct ¡lNAt accEPlANcEA. Porliol Acceptonce sholl be in occord¡nce wilh subsection I 07.25 (d), 208.1 0 ond 21 4.04. At the Forlisl A€epronce of lf¡ep@ject, it sholl be delemined by the SWMP Administrotor for Conslruclion o¡d lhe Eng¡neerwhich Þmporory conlrolreqsures sholl r"mo¡n unlil 70% revegelolion is estobl¡shed or which sholl be Emoved.B. At the end of the pþject, oll diÌch chÊcks sholl either cons¡st of lemporory eros¡on logs lor equivo¡entl or pemonent rip{p.C. Allslom droins sl'oll be cleoned prior to the Finol Acceptonce of the projecl. Work sholl be ¡ncluded ¡n 203 Cleor Culvff.II. NARRATIVESCg¡tgl l¡lælure lÁqlÌlxer Durlnq Conthucllon:l. CentrolmeqsurenqrotiveshovebænincludedfortheCDOfSiondqrdSpecilicqt¡onsondSJondqrdPlonM-æ8ondv-21óobng with ony non-slondord contrcl meosures opproved duñng the design process, lf o Non-Slondord Cmtrûl UeosuE notinsluded in lhe SWMP is proposed ord opproved by lhe Eng¡neer the SWMP Admìnisfrotor for Consl¡ucäF sholl Co thefcllowing: Plqce on "X" in the column fq non+londord ond complete o Norslondord Conirol ¡.4eqsure ìpecif¡cqtìon ondNonqlive covering the whol, when, whse ond why the conlrol meosure is be¡ng used shqll be odd to ìhe !W.!tP. lheoppropriote "x" sholl olso be oddec 10 lhe implemenlotion phqsefs).2. The SWMP Admin¡strqlor for Conslruclion sholl ploce on "X" in the column ln tjse On Site when the æ1tÞl reqsure hosbeen ¡nstollel.3. A "P" in the ¡n¡liol Activities Cdumn indicoles lhol lhe conTrol meosure sholl be jnstolled before coElructic. qclivifslorts. Locol¡ons ond quonlities u,ill be discu$ed during lhe Env¡ronmentql Pre-construction Conferenc3 'difi l¡e ReoitnolWoler Pollut¡on Conlrol Monqger.Project Ho./Cod:sl-e ñumbs 22CDOT ACCESS PERMIT #320024swMP (2)Subst She€ts:2olaStuctuENumbeßJJLEnqinær:DEM By:JJLShæl Subst:swúPAs ConslructedNo R€vis¡ons:SSGM1 1 I West S¡xth Street, Suite 200Glenw@d Springs, CO 81601970.945.1004 w.sgm-inc.@mSCOTTlnit.CohhenßDebRev.@OOuomÕuter l-fe lnlomatonPrint Date: 1/2tl21Lal Moditì€lbn Dâb: 127l2J20D@ing File Name: RifleP¡tsRlrfSWMPAtud V€'. 2020 Scelå: ASShMSGM PÞjedNd: 2019-341.0,12Clelity Control Rt¡
CONIIOL MEASURE U,IPTEMEMANON PHASEPERMANEI{Is¡ABtuzAlloNlMlERUrlAcllvlfrEsxxxxIBDINMATacflvmEsxxxxINUSEONsrlEM.ÍANDAiD orTlor NON-SIANDARDM-208M-208M-208M-208M-æ8M-204M-208M-æ8M-208M-208M-208M-60ì-ì 2M-208M-208NARRAIIVEFence lploslic) sholl be ploced iñ combìñotion wilh erosion logs to prevent encroochment of cons'frucf¡on lroffic ond sed¡menliñlo slole woteß priorlo stort ol conslruclion dislurbonces. Fence {plosticJ sholl be ploced odjocent to the wêllonds: eþsion logssholl be ploced between the plostic fence ond d¡slurbonce oreo. Logs sholl be p¡qced to direct f¡os owoy f¡om or f¡lter wolerrunning into wetlonds from dÌsfurbonce oreos.Fence (plqsfic) sholl be used in oreos ¡ndicqled ¡n the pìons to prevent e¡croochment of constuction troffìc ond sedimeñt for theÞrotecäon of môlure trees ônd/orexisting loñdscdping priorto slorl of consl¡uctìon dislurlconces.Ploced ¡n ditches immed¡oiely upon coñpletion of d¡ìch grdding lo reduce velocity of runoff in ditch. For existing ditches, plocepdor lo stort of co-struclion disturbonces.Monulocfured rlom droin in¡el protecïon ploced prior to conshuction dìsturbonces os detoiled in M-æ8-ì, to prolecl exisfing¡nlets orimmediotely !pon completion of new inlets to prevenl sedimenl from enteriôg ìhe inlel lhroughout conshuclion.Erosion logs or oggregqte bqgs ploced oround ìnlel grote to prevenl sed¡menl from entering inlet. Plqce prior to conslruclìondisturbonces lo prolect exisling inlels or immediotely upoñ completion of new inlets.Ploced qt moulh of culverl inlets ond overtop of culvèrt ot inlet o¡d outþl where disturbonce moy be occuding odjoceñt to pipelo prevent sediment loden woler lrom entedñg pìpe ordro¡noge. Ploce pñor to slort of constuctioñ disturbonces,Ploced oround inlel grote or slope ond ditch poving lo prevent sediment from enledng inlet. Ploce p¡iorto storl of constructiondislurbonces.Ploced withi¡ spec¡fied dislonce, in occordonce wiih subseclìon æ8.06, frcm loe To contd¡n sed¡menf oround stockp¡le.'Aggregote bogs ore eosily moved ond reploced for occe$ during lhe work doy, Ploce øiorlo slort of stockp¡le, ìncreose conkolos slockpile ¡ncreoses size.Ploce pr¡or to slope/embonkmenl work to coplure sed¡ment ond protecl ond delineote undislurbed oreos. *Con be used loslockpile lopso¡l for sofvoge.Ploced priorlo construclion commeñcing lo oddre$ poìenl¡ol run{n woterftom offsile, ond to divert oround d¡sluabed oreo.'Con be used to stockpile toÞso¡l forsqlvoge.Ploced on the conlour of o slope 1o coñlqiñ ond slow down coñskuclion runoff. Ploce pdorlo stort of consirucl¡oñ disturbonces.lJsed lo coplure sed¡menl loden runoff from d¡studced oreos < 5 ocres dudng consfructjon. Ploce pñorto slort of conslruciiond¡sturÞonces. OuÌlets thqt withdrqw woter from or neor lhe sudoce moy be ¡nslolled when d¡schorg¡ng tfom bosins ondimpoundmenls.Ploced os o condu¡t or chute lo droin runotf down slope ond to prevenl ercs¡on of slope.Moteriol ploced os en€rgy d¡ss¡potor to prevenl erosioô ol outlel sfructure.Construction control, used forwoste monogemenl of concrete ond concrete equipmenl cleoning. Ploce priorto slort of concretedctivitìes-Source conkol, ploced lo prevent trochng of sed¡menl from d¡lurbed oreo lo offsile sudoce. Ploce pdor to slorl of conshucliondisturbonces.Constructed eorv in prcject, øior lo storm sewer/ditches ond in occordonce with 208.051p) to copture stom ilow. Outlelsiructure ond/or outfoll sholl be modified for teñporqry sediment coñlrol using qn opproved non-slondord deloi'. Outlels lhotwiìhdrowwoterfrom or neorlhe surfoce shqll be instolled whe¡ dischq.ging from bqs¡ñs ond ¡mpoundments, unbss ¡nfeos¡bleSholl be done in such o monnerto p¡evenl polent¡ol pollutonts from enleÍing stote woleß.Conslructed over streom or dÌo¡noge to prevent dirchorge ot pollulonh from construclion equipmeni into woter.Ploced to d¡vert cleon surfoce or ground woler oround d¡slurbonce oreo to prevent it from mixing with construction runoff.APPUCAIION,CONITOIIAEASUREPROfECT'¡ON OF EX¡SIING WFILANDSFence lp/osf¡cl ond ercsion logsPROTECNON OF EXSNNG IREES/LANDSCAPINGFence lplosl'b)CHECK DAMIDITCH CHECKErcs¡on log, $it bem, $t dikq rock check ddmStorm DE¡n lniet Proteclion ìn Paved Roodwoys (TWe 1,2 ond 3 os shown on M-208-1. slÊef 5 of 1 lìStom Droin ln/et Proteclion ,n Nqfive Seed Areas (M4USiondord inleis lype C ond D)CUIVERT INIEI/OUNET PROTECNONErcsion iogs, oggregofe bogsNPE C, IYPE D AND NPE ¡3 PROTEC¡ONE/osion iogs, oggrêgote bogg erosion bo/esSÍOCKPILE PROTECNONTempo.ory bem, ercs¡o, lo95 oggregote bogs'TOE OF FILI PROÍ6CIIONEtdion logt túpddry bem, s¡lf fencq topso¡l wind¡ow*PERIMEIFR CONIROLE¡ogbn iogs, s¡]f fencq ¡emporory betñ, lopsoil windrcwrSEDIMENI COMROL/SIOPE CONIROTSilt fence. erosioñ logs|Efr PORARY SEDIilENT TRAPEMBANKMENI PROTECNON OR TEMPORARY SLOPE DRAiNOUITETPROTECNONRiøoo or opproved olherCONCREÆ WASHOUTI n-graund or f obticote dVEHICLE TRACKING PADEng¡neered SED,MENI 8,qSlNDEWAIER'NGlconirocto¡ is respons¡ble fot obto¡n¡ng o peñ¡t frcmColorôdo DèpdÍlment of Heolth ond Environñent.)TEMPORARY STRE,AM CROSSINGCLEAN WATER DIVERSIoNOfHERS¡lllçIulAleeûol ¡óeS!! fhof moy be potenäolv used on the prcject for erosion ond sed¡ment control; proclices moy include, but ore not limiled to;PrÕject No./CodeShætNumber 23CDOT ACCESS PERMIT #320024swMP (3)Sub$t Shâåk:3ôf5StudeNumbßEn9rnêer:JJLDEm By:JJLSh6êt Subst:SWMPAs Constructedtuvisd:ESGM1II West Sixth St@t, Suite 200Glenwood Spri¡gs, CO 8'1601970.945.1004 M.sgmìnc.æmSCOTTlnit-Daþ-uomouler Frle lnlomãlþnPàilDe: 112ffi1Las Modif€tion Oab: 12il2020D€wru File Name: RinePiþRdry-SWMPMffid V6r. 2020Sølâ: As ShilnSGM Prcied No.: 201W1.002Oudto Conbl:RN
INON-STRUCTURÀL Conkol Mæsures lhot mcy be potentiolly used on the p'oject for erosion ond sed¡ment ccnlrol; pEct¡ces moy include, but øe not fm¡ted lo:ConirolMeosure locoiions ore ndicoled on the SWMP S¡te Mop^4eo5ures. -he entire memorqrdum con oe fcund qt: hlþ!://'w,colorodo.Eov/Þoclflc/¡ll,e5/delqull/flle5/Veqetqllve%208uñer7¿0Memo,pdlBMP/CONINOI MEAIIURE PHASINGPEIMANENIslaEtUzaÎoNxxxxrNTÉil ^ACTIVÍTIESxINMAIACÍVMESxINUSEONSITEt-STANDARD d'x' fdt{oN-STA'IDÀRDM-208M-208ñ{-21 óÀ1-2ì¿NARRATIVEFinish ng compon€ni forfillering sedimenl]qde¡ runofi ficm d¡slurbonce oreo. Areo wilh¡n CDOf ROw or temporory eosement tobe identiied on SwMP prior io conshuclion slorling-Exisling o'creoled lfidfoms moy be used os o conhol meosure il they prevenl sed¡menl from entefing or leov¡ng lhe d¡sturbonceoreo. lf o londfotr cÍecls flow ofwolerlo o conaenkoled oulfoll point, the outloll poinl sholl be protected Ìo prevent erosion.Areq to be ìdentifièc on SWMP prior to consttuclicn sforl ng.Prio. lo embonkmen'wo* commencing, existing topsoil sholl be srroped 1o o depth of 4 inches orosspecified, oñd ploced instoclqc¡les orw¡ndr.Þs. upon completion of fnol grod¡ng, topsoil sholl be evenly distñbuted over embonkmeñt lo o depth of 4inches oros specifed.Temporory stobilizo'lion of dìslurbonce ond to minimize wind ond erosion.Temporory stobilizolion used for overwiñtering of dislurbonce oru5ed lo conlrol erosion fororeos scheduled ior luiureconslruclon.Not to be used in or€o5 of coñceñlroted flows, i-e. dilch lines. To be for eilher lnterim or Pqmoent Stob¡l¡zotÞn ploced os osurfoceccverforer6ioñconkol. Moybeusedossurfocecoverwhenwork¡sleñporo.ilyholredondosopprovedbylheEñgiæerfor stockpile.Inlerim or Permonenl Slob¡lizotion ploced os o sudoce coverfor eros¡on control ond or seeding estoblshmen-. To bernslolled 05lnterim Slcb¡lizolion c5 o surfoce coverwhen wor< is tempororily hdlted ond os opproved by lhe EngiæerlnleÍm or t¡nol StobilÊotion ploced os o surloce coverfq erosion coñlrol oñd orseeding estodishment. lo be instolled oslemporor/ surfoce cDverwhen work is lempororily holled ond os opproved by the EngineerFinol Sìobilizotion cf ciislurbonce ond lo reduce runoff oñd co¡lrol erosion on dislurbed oreos.Finol Stobilizotion cf ciisturbonce ond lo reduce runoff o¡d conlrol eros¡on on d¡sturbed oreos.Finol Slobilizolion cf dislurbonce ond lo reduce ruñoff ond conlrol eros¡on oñ d¡slurbed oreos. Ploced in chonnels or on slopes forerosìon ccnlrol, chcrnel l¡ner ond seeding esloblshmenf.Source control, used lo remove sedimenl lrocked onlo poved suÈoces ond to prevent sedimenl from entering droinoge syslem.Sweep doily ond ot tle end of the consjruction shitl os æeded. l.:¡ck brooñs sholl ñol be Þemilled.APPI.ICATþN,BMP/CONTIC)IiIEAIIURE. V'EGEIANVE 8U:FÊR SIRIPFeâce lplaslic)G CADiNG ^PPUCATiONS ltÀND:ORMJTOPSO/L MANAGE¡/ENT SIOCKFLE/S¿LVAGEWnd@w ot slockpíle5Uq:ACE ROUGHEMNG / GFAD NG 'IECHN.QUE:SEEDiNG ITFMPORARY]BCNDED FIBER MAIRJX oI MLLCHING IIíYDRAULICISt øw ü Hay MU'-CHI^IULC¡-. TACKlntnSPRAY-ON TULCH 8¡ANKEI lNol to be used in oÞos ofc@centrofgd flowg ¡.e. d¡fcn l¡é.)SEED'NG PERMAN€NI INATIV€/so,L RFÍENION BrA\KFr ISRE,III/RF RE'NFORCEMENI MAI IRMISreepingCTI'ERProject No./CodeSh€Numk 24CDOT ACCESS PERMIT #320024swvP (4)Subst Shê€ts:4 of 5StruduENumbeßEn9¡n€er:JJLDmm By:JJLSh€d Subs€t:SWMPAs ConstructedNo Revisions:Revisd:SSGM1 18 West SixÚ1 street, suite 200clènwood Springs, CO 81601970.945.t004 Msgm-inc.com,ffi:TSCOTTmt'ln¡t.DâteRev,@OO-uomDUter l-rle lnlorma¡onPrint Date; 1!26/21Last Modiføt.n Datê: 1Ul202!DEúng File Nile: RfePiþRdry-SWMPAuto6dv€r. 2020 Scelð: AsshownSGlt¡ Prcjed No.: 2019¡41.m2Orality tonfdr RN
12. IABUI.AIION OT STORMWAIER QUANTIIIESA. BMP sediment removol ond disposol bul shqll be poid for os:208 Removol ond D¡sposol of Sedimenl (Equipment) ond 2018RemovqlondDisposolofSed¡menf(Lobor). AllotherBMPmoinlenonceshollbeinc¡uded¡nthecostoflheBMPDevìce.B, lt is eslimoled lhol 5 hou6 combinol¡on looder {8G125 hoßepower} moy be requ¡red for miscelloneous eros¡on controlwork osdirected by fhe Engineer, work sholl be poid for qs: 203 Combinot¡on Looder.C. Estoblishment of seeded oreos will not be poid for seporolely, but sholl be included ¡n lhe work. This sholl include weed control,reseeding/mulch/tqckifier..lolqlOuqntlty50050068212600.94o.940.91t8aPmq¡er¡lStob5rotloñ500o.94o.94o.94r88liHmCoút52lnlüqlCtr3t-500óa21,15?qyUnltHourCYCYIFEochDqyAcreTBO6cdpllonCoñbindiion tooderTopso¡lStockpile TopsoilEros¡on LooTvoe ì fl2 ¡nchlConcrele Woshoul SlfuclureErosion Confol Monogement {ECM)Seeding (Nolive)Soil CondäionìngMulch¡ng fweed Free)Mulch TockifierPqt li.n203{159420740205207-00210,o8-0m2208-000¿s20a{0'2072Ì 2{000ó212"4[032213-000032 r 3-000ór.11 is onl¡cipoìed lhot odditionol control meqsures qnd control meosure quontit¡es nol shown on the SWMP Site Mops sholl be requiredon the p@jecl for uñforeseen conditions ond replocemenl of ilems thol oæ beyond lheir useful seNice l¡fe, see subsect¡on 208.03 ondæ8.04. Quorìlll¡es for qll conlfol meq¡ures ¡hown obovè ore esllmqled, qnd hqve been lncreqsed fof unfdeæn condllions qndnmolconhol mæsure llle expecloncy. Quontities sholl be odjusled occord¡ng to the condil¡ons encountered ¡n the field os direcledond opproved by lhe Engineer. Poyment sholl be for lhe ocluol woft compleled ond moteriol used.'*Pqy ltem 20&00071 is incìuded for onlicipoled moìntenonce of vehicle trocking pods bosed on lhe sery¡ce lile of the controlmeosure in the field. The use ol ihe moterjol sholl be directed ond opproved by the Eng¡neer.**'FlA refeß to CDOfs Force Accounl Poy llems.13. BIoLOGIC lMPACflt ond DEWAIERINGA. !g!@NUEN!AL!UE4çI!;I . Wetlond lmpocts: NO2. Slreom¡mpocls: p3. Threolened ond Endongered Species: \þ!9B. .QEWÂIEEj!.ç. (Not Covered Under the CDPHE Low Risk Guidonce Document of Uncontominoted Groundwqter to Lond):l. Dewqlering: Refer lo other environmentol perm¡ts in occordonce with subseclion 107.02 ond lhe permits conlo¡ned ¡n Tob ló ofthe SWMP.14. NOIESA. Trqcked veh¡cles will nol be ollowed onlo lhe poved porlion of CR 34ó or poved roods. fres of vehicles lhol will use lhe lhepoved porl¡on of CR34ó sholl be cleoned before lroveling on qspholt surfoces. Sweeping shoìl be perfomed 10 mointoin cleonpoved surfoces.Project No./CodeSheetNumÞr 25CDOT ACCESS PERMIT #320024swMP (5)structuæNumbe6Enq¡nærlJJLDÉm By:JJLSh€d Subs€t:SWPAs ConstructedNo Rsvbions:gSGM1 1 I West S¡xth Street, Suite 200Glenwæd Springs, CO 81601970.945.1004 M.sgm-inc.@mSCOTThit.cômmenßDâteO(ìomôulêr F¡lê lnfômâl¡ônPrintDaþ: 1/26/21Lâst Moditi€tion Dab: 127120æDÉwing F¡le Name: RifePiÈRdry€wMPAtred Vs. 2020
Prcþct No.,/CodestÈerNrhbs ?ô1ol3JlrEROSION CONTROT (r)cDoT ACCESS PERMTT #320024Drcwn By:lLShæl Subsel:ECfu ConslrucedSSGMI l8 W6l Siíh Skæ|, Suiie 200Glenwæd Spr¡ngr CO 8ló0197).945.1OO4 wsgminc.com,/=!scoTT;i=;'lnil.heRcv.@OOC:)Comouler File lnformolion- _ - NP_OLD- - - NP-oLD J----ÑF',--&B- ---QLRT_OLBs,àOLB-OLE3,$CR.OLB-018óEdgrEII_OLBNP_OLD---NP_OLD-_-I]P_QLD---NP_OLD---NG'rophic Scole(332 LF)LOGS-oLB-*-50ÞLB-QnEFæl:f:-OLB_OLB5375_QLBGlwlofEdgc.QLBNP-OLD _ -coulfû RO¡D 3+6+-n-_tlx_ x_ x_ x_ x_x_LOGSLF)53ÊDE¡. wotcr Unc- I_OLB -;-OLBT,OLBÏ_QLBlocsT_QLÊ---r-oLB---T-QL8- - - T.QLB3.+6 CLFIEI..D FT ATL BMP'S.3. BI¡P LOCAÎONS SHOIYN ARE APPROTIMAIE,+. QTjANImES SHOV|I ÂRE APPROX|I¡AÌE. CO¡ÍTRACTOR lOUMTS OF-q- o¡smuaro rnr¡LOGSx-x_t{olEs:1. AIT EROSION COITIROL BMP,S TO E PER CDOT M-208-I2. BI¡P'S ARE t{OT DR yf¡t T0 SC t"EKËY- - EROSTO¡I LOGSLãn Nkd,itri<diq Oote: 1 2/7 /2020D'wi¡q Fil€ Notre: RilloFiRdq{Gio¡ ConrolAukodvê.. 2020 S:olê: ÆS.MsGM Proid Nc.: 2019J41.m2Orolily Cùtu|: Rll
IProiecr No./CodeShdNumb¿¡ 27sobd shd:ECCDOT ACCESS PERMIT #320024EROSTON CONTROT (2)lJrE¡gi¡æiDrcM 8y:JILFæt: I---NP-QLD_--NP_QLOAs ConsiructedgSGMI l8 west Sixlh Stel, Suite 200Glenwood Springs, CO 8ìó0ì97O.945.1 OO4 ww.3gm.inc.com:i l= ,.----=*SCOTTìniî.NP-QLDNP-QLDNP_OLDDole@OOPáúùtêt 1/26/21br^aodiffcol¡ô¡ tuÞ: l217/2020Drdìns Fllê Nofre: Rìllê?HdryEc¡on CoñholAdoıdv€r. 2020 Søle: ÀShownSGMPrcidNo.r 2019¡41.002Quol¡ry turol RNos3 LF)t-70 wBLOGSCR 3,+6 CL- NP-OLD - -(717 tF)(728 tt). UMÍTS OF-u- oslnuBED IREALOGSLOGSNOTES:1. Atl EROSTON CONIROL BMP'S TO BE PER CtþT lr-204-12. BMP'S ARE NOT DRAIYN TO SCAITJ. BMP LOCAÎONS SHOÍIN ÂRE APPROXIIIAIE,f. QtnNmlES SHO{N ARE APPROXII¡I¡AIE. CONIRACTOR lORET¡ FIT AI BMP'S.KEYEROSION LOGSGrophic ScoleCR J¡+6LOCSLÐ---NP-oLD---.19.5:7
Poi*t No./C:deshdNumhd ZgsÞdurcsubdshd:INP/¿ QLDrÉ-ot-ot-70 {acDoT ACCESS PERMTT #320024EROSTON CONTROI (3)XLEnginæiDrôwn By:IJLShd Subsl:ECAs ConstructedgSGMI ì I west S¡ih Sheet, suile 200Glenwood Springs, CO 8'ló0ì970.945.1 0O4 w.rgm-iñc..omEROS¡ON LOGSo15 rf)- - NP-oL0 ---NP-QLD---_ - _ NP_OLD- _ NP-QLDSCOTTln¡r.NP-QLDNP-OLDNP-OLDNP_OLDDoleOO-li ..ü--'....*........--lnFeeÌ:l"=50'Grophic Scole50NP-QLD -NP-QLD - _(703 rÐLOCSComoutcr File lnformalicnPáñÞet 1/26!216n Lt.di$@lio. DoÞt 1 U7 /2C2ODwìng File Noær RìflêPifRdwr€G¡on ConholAukodv€.. 2020 Sole: Á¡shownLOGSLÐNP-OLD - - - NP-OLC - - - ñP-0LD - -_ __F_ _-l--lKÃ'EROSION LOGSUMÍTS OFDEIRUBED AREANO1ES:1, ATI EROSION CONIROL 8MP'S TO BE PER CDOI M-208-12. BMP.S ARÊ NOT DRAW{ TO SC^T3. BMP LOCAÎONS SHOIYI{ ARE ¡PPPOXIMIIE4. QUANTÍES SHOWN ARE APPROXIIåTE. CONTRACroR IOFIEI.D ÍIT AII AMP'S.LOGSCR J,l6(reE LÐIr-70 wÉSGMProidNo.: 20ì9-341.00?A.olity Contol: RN
ùöGrophic Scole0 25 50 100l-_---l-lln Fæf I" = 50'EX|SNNG YIELDYÛtH SÍOP S|GN.É.ofPrctætionD¡rbict'IoRl-1(Joì(50')_L -\i'tì'-otB .- _ _.r_oLB \- I-OLÞ\--%'ro¿â ---¡ _O(B _Guordrcilf-OLg - .-l_REM0Æ/REP|^CE ExrsflNGSGN WTTH STOP SIGN.-NP-ÕLD-_-_ NP-QLD - --NP-OLD_--ôoÉ!&o=Rt-1(30I3o')EPOTY PAVETTEi¡TSOUD YVHflE EDGEUNE, 6-INCH, 12-FT TANES(11,500 r"ÐNOTES:1. SIGNS TO 8E lNSrAUrD PER CDOT 5-614-1, S-51i+-2, S-61+-E AltDut TcD.2. CENIERUNE DOUBI.E YILLOVÍ A¡\¡D EDGELINE SOUD t$nE PAì/EMEN'l¡ RKINGS fO BE NSrAI-ED ON CR 3/+6 FROM M¡¡rM CREEK ROAD TO.ÍIIE END OF THE PROPOSED CONCRË]E PAIEMENT.3. Ar! PAVET¡ENT MâRKINGS TO BE INSÍ^I'I-ED PER CDOT 5-627-Ii+. THE CO¡¡TNrcfOR SHAI.I CONTÄCT CTþT PRqJECI MAI{ÄCER AND ENGINEEROF RECORD, AT ITAST IIYO WEEKS PRIOR TO SCHEDUI..E SIRIPING. lHEPERMfTÌEE VTIII 8E RESPONSIBI.E FOR ANI CORRECNONS REQUIRED UPONFINÂL INS;PECNON OF'ÍIIE ACCESS.EPOTY PAVEI¡ENTSOUD DOUBLE YEIOÍí, ¡ÞINCH X 4-lNcH x 4-NCH(5654 LÐSTOPSTOPProiect No./CodeNo.:Code:Shd Number: 29CDOT ACCESS PERMIT #320024SIGNING & STRIPINGAs ConslructedNo Revisions:Reviæd:SSGM1 l8 w6l S¡dh Skeet, Slite 200Glenwæd Springs, CO 8ló0ì97O.945.1004 w.€m-inc.comSCOTTl¡al.CommenhDtrRev.OclO-ComDuler F¡le lnformotìonPrintD#:1/26/21tos Modilicotion D#: 1/2512021Drcwinq File Nome:Autød Ver. 2020 Scole: As Shown Unib: EnglishSGM Prô¡d No.:20t9J4ì.O02Ouôl¡þ Côntrol:RN
EJ538553A05575lrEs55E05375s3855¡ao53755385l53E553805J7555a553E05575539053E555805J90sJA5il80)sJ60-203+00.00o20H:1'=20'V:1"=10'-20o20H:1"=20'V:1"=10'5375-20s+00.@20h:1'=2C'V:1"=f0'-206+æ,00o20H:1"=2€f V:t'=10'4+m.mi5JE5 i55805JE6-207+(þû'20H:1'=20'V:1"=10'5J7553905:tE555EO53905JE55J60-20a+üt.(þ020H:1"=20'V:1"=10'559)5J755590-20o20H:1"=20'V:1"=10'-20o20l:1'-2Ð' V:t "-1 0',+æ¡0to+@.005J90,l\\I5385 '''5385_l{25380s.lao-20ll+OO.m020H:1"=2O'V:1"=1O'-20t2+@.00-20fs+dt (xt20H:1"=2O'V:1"=10'-20t4+oo.00æl:1 '=21' V:1 "= 1 0'H:1"=20' V:1"=10'5390Iilc-:=Þ--ì--539055455Ja55360-20t5+o0.o020H:1"=2O'V:1"=1O'-201t+00.00o20H:1-=20'V:1-=10'Æ\"*w-2017+OO.æ020-20le+æ.ooÆH:1"=20' V:1"=10'H:1"=20'V:1"=10'55905390 i - Ì'53905J9053E5534!¡538555855560-20t9.ioo¡020H:1"=20'V:1-=10'E3a{t5J805580-20æ+00.00o20l:1"=20'V:1"=10'-202f+oo¡0020H:1--20"V:1"-10'-2022+00.@2tH:1"=2û' V:l-=10'Poþct No.,/Codesh#Numbd 30CDOT ACCESS PERMIT #3æ024cRcss sEcItoNs [])Sub6d Shæh:l:lìIlÐrcM 8y:ItXSEC'Tfu ConshucledSSGMI l8 W6r S¡íh Srrei Suile 200Glenwæd Spr¡ngs, CO 8ló01970.945.10O4 w.€m.inc.comSCOTTlñit.DoÞ@OOC-Comouter File lnformoticn)id Wt I /26!21ß Mo¿iÊdioi hE 1U7/2C2OhwiñE File Noæ: RifleERdryXSECItukod V€.. 2020 $ol¿: À sÀunSSM PrcidNa: 201991.002GJol¡ry Csb[ RN
I5590558555805395539053855J9553905385rl55951-- I5395539053855595559055855595559055E5*"il I I53905390 I5385559553905J65539555905JA55385-202t+o.00020H:'1"=20'V:1"=10'-20020H:1 "=20' V:'l "=1 0'-20omH:1"=20'V:'1'=10'-2025+00.00020H:1"=20'V:1'=10'25+{þ.002,1+0O.0OIi5395II,-5:t90-411--!20H:1"=20'V:1'=10'5585-20lo+oo.00o20H:1"=20'V:1"=10'-20o20H:1"=20'V:1'=10'-2026+üt O0020H:1"=20'V:'1"=10'-202e+o.00zr+û,@;rI<ì5395 ,s¡90 t irÌi.!-20tl+O.00o20H:1"=20'V:1"=.|0'-20¡i¡+æ.00020H:1"=20'V:1"=10'-203,:t+O.00qm-20020H:1"=20'V:1"=10'5tt+00.00H:1"=2O'V:1"=1O'II5390l5585s580-'t2033+7C.lO-too -EoH:1"=20'Vr1"=10'-60-,+o-20o20Project No./Codeshæt Númbq 3 lcDoT ACCESS PERMIT #320024cRoss sEcTloNs (2)Enginæi.lJrDrcwn 8y:JJTShd Subst:ßECAs Constructed6SGMI 18 Wët S¡ih Skeel, Suite 200Glenwood Springs, CO 8ìó01970.945.1004 ww.sgminc.comSCOTTlnil.heO-Oi-File lnformolionPân Det 1 /26/21bdModiffcolio¡ tuþ: l217/2020Dwìnq Filê Noñè: Ri¡ePilrdqxsEclSGM Prcid No.r 2019¡4ì.002ùol¡ry tubI RN
9'Proiecl No./CodeNó.:Ccde:Sheg Numbe': 26SkudreNumberRO D 3¡t6cDoT ACCESS PERMTT #320024WEsO TURNING MOVEMENTJlt)rcwn 8y:JILiheet Subsd:ÌURNAs ConslrucledNo Revisioß:Revised:SSCt'lI I I Wesl S¡ilh Shd, Suile 200Glenwæd Sprin6 CO 81ó01970.915.1 OO4 w,rgñìnc.coñSCOTTlnú.DtrRev.@-OlnFeet:I"=30'Grophic Scoleóot-70 wEComouter Ele ln{o¡motionDdei 1tost Modifi@fion Dole: 12/11 /2020Drowing F¡le Ncme:RiNePiÐwyATAulo@d Vã. 2020 Scde: As Sho*n Unih: E¡ol¡shSGMProiedNo.: 2019-341.002 Ouol¡ÞCo¡iol: PN
Revised Floodploin Development Permit Norrotive for Rifle Pit # I August 2022
Attoch ntE
Comprehensive Wetland Delineation Report & Boundary Confirmation Request to USACE
USACE Boundary Confirmation from Tyler Adams
s E
sPK# 2020-00772
Cnnrnrchr:nr¡ivc Wctlanr:J Deiineatiorr Report tt
Reqi.resi for Boundai'y Confirmation
Rifle Ciravel Pit #t
Garfieid Ccunty, Caicræcjo
Prepar*d fer:
U,S Arnry Cclrps r.:f I ngirrcrrs
Colararlo Vrlest Reguiatory ûffiee
Ålbuquerque District, Regulatory llir¡isinn
4ü0 Road Avenue, Raant724
6rand Juneticn, Cclorado 815CIL-2563
r)-^^^-^,J L"..r-¡siJclrcr,r ¡,Jy"
5ÇM, inc.
75Q 6r*nd Aventic, Sr¡ite 200
Grand Junction, C* 815û1
lhe Sc*ti
97ûü East Mineral ,Â,ve, Suíte 40û
CentEnr¡ial, Cü 8ü132
Fe L:rua ry 28. 2C22
SsGrr'l
7-419 34LAA2
www.sgm-tnc.com
Rifle Grovel Pit #7
Wetl o nd De li neati on Re po rt
Februory 2022
Comprehensive Wetland Delineation Report &
Request for Boundary Confirmation
Rifle Grovel Pit #7
lsPK# 2020-001721
Garfield County, Colorado
Prepared for:
U.S. Army Corps of Engineers
Colorado West Regulatory Office
Albuquerque District, Regulatory Division
400 Rood Avenue, Room 224
Grand Junction, Colorado 81501-2563
Prepared by:
SGM, lnc.
259 Grand Avenue, Suite 200
Grand Junction, CO 81501
Submitted to:
Colorado West Regulatory Office
U.S. Army Corps of Engineers
400 Rood Avenue, Room224
Grand Junction, Colorado 81-501-2563
IHC Scott
9200 East MineralAve, Suite 400
Centennial, CO 80LL2
Rifle Grovel Pit #L
Wetlø n d Del i n eotion Re po rt
February 2022
Contents
1. APPLICANT AND SITE INFORMATION.........
L.1. Background
1.2. Current Submittal
1.3. Project lnformation ,
2. PROJECT DESCRIPTION....
2.L. Consultation History
3. PROJECT AREA DESCRIPTION..
4.
3.L. Landowner Contact lnformation
WETLAN D & WATE RS DE LI N EATI ON ................
4.1.. Description of Desktop Review and Preliminary Area Evaluation
4.1.1. National Wetland lnventory Review.......
.4.L.2.. SSURGO Soil Review.
4.2. Description of Field Delineation Procedure
4"3. Site Hydrology
4.4. Preliminary Results within lnvestigation Area.........
4.4.1. Tailwater Ditch (R3UBHx)
4,4.2. Emergent Wetlands (PEM)
4.4.3. Table 1. Summary of Waters of the U.S. and Wetlands in lnvestigation Area ..
5. FEDERALLY LISTED THREATENED OR ENDANGERED SPECIES......
5.L. lmpacts to Bald and Golden Eagles
5.2. lmpacts to lndian 1ands,.,..........
5.3. Cultural Resources.
6. REFERENCES............
List of Figures
Figure 1: Vicinity Map............
Figure 2: Topographic Map......
Figure 3: National Wetlands lnventory ...
Figure 4: SSURGO Soil Type
Figure 5: Comprehensive Delineation Study Design ................
Figure 6: Delineated Aquatic Resources...
List of Appendices
APPENDIX A; WETLAND DELINEATION AND MINE DESIGN PLANS...
APPENDIX B: WETLAND DETERMINATION DATA FORMS..
APPENDIX C: PHOTOLOG ................
APPENDIX D: CLASS III CULTURAL REPORT
L
T
..2
..3
..4
..7
..8
..9
T2
12
t2
13
L4
18
1.8
19
79
21
24
26
26
26
27
10
TL
16
L7
22
23
APPENDIX E: BOREHOLE DATA
il
Rifle Grovel Pit #7
Wetlond Delineation Report
FebruorY 2022
1. AppucANT AND Sr¡ lruronMATloN
IHC Scott (formerly Scott Contracting lnc.) requested that SGM delineate all potential wetlands and
other Waters of the U.S. for a gravel pit development project in Garfield County, Colorado. The
project would be new development, located on the site of an existing cattle pasture which has been
irrigated up until 2O2t. The parcel is divided by an irrigation tailwater d¡tch that carries agricultural
return flows to a discharge point on the Colorado River. IHC Scott is proposing partial development
of the parcel, with the intention of confining the pit infrastructure to upland portions of the property
and entirely avoiding direct impacts to jurisdictional wetlands and Waters of the U.S. (WoUS) on the
property. There are anticipated to be no regulated impacts as a result of the proposed activity. The
conceptual outline of the proposed development is discussed in this report, but is not addressed in
depth report.
This report has been prepared in accordance with regulatory guidance for submíttal to the U.S. Army
Corps of Engineers (USACE) to request a wetland boundary confirmation without accompanying
jurisdictional determination, A No Permit Required letter is not requested at this time. This report
has been submitted to assist in planning and communication between IHC Scott and regulatory
agencies, primarily the USACE, but also Garfield County.
1.1. Background
A standard Aquatic Resource Delineation Report (ARDR) was submitted to the USACE, Colorado
West Regulatory Office, on August 13, 202L. The ARDR was based on standard delineation
protocols, including the establishment of eight data points with accompanying soil pits and wetland
determination data forms (WDDFs), located in places where the wetland boundary was judged to
be particularly representat¡ve and/or visually inconclusive. The presence or absence of hydric soil
indicators were critical in making boundary determinations, given that the site is generally covered
with facultative vegetation and that hydrology is both subtle and heavily altered by historic grazing
and irrigation return flows.
The ARDR was reviewed by USACE Senior Project Manager Travis Morse, and he requested a site
visít to further evaluate the findings. The site visit was conducted on August L7 ,202L. As a result of
the site visit, the USACE made the following observations:
o The site qualifies as a "Difficult Wetland Situation", based on the assumed presence of
Problematic Hydric Soils, as described in the Arid West Regional Supplement.
o The Problematic Hydric Soils designation is based on NRCS soil mapping of alkaline soils in
portions of the project area, as well as the observed presence of alkaline deposits in soils
throughout the project area.
o ln moderately alkaline or greater conditions, hydric soil indicators are not a reliable indicator
of wetland condition. Therefore, hydric soil indicators should not be relied upon to delineate
the wetlands at this site.
o Given the size of the site, the subtle variations in conditions, and the extent of potential
wetlands, USACE requested a Comprehensive Delineation effort, incorporating regularly-
spaced transects, soil pits, & data forms. Soil pH testing was also requested to assess the
presence and extent of soil alkalinity.
t
Rifle Grøvel Pit #7
Wetl a n d De li neation Re po rt
Februory 2022
The findings of the August 13,2OZI ARDR were rejected, and a resubmittal was requested
that would use the transect-based approach and incorporate Problematic Hydric Soils
procedure into the boundary determinations.
a
1.2. Current Submittal
SGM has now completed the requested Comprehensive Delineation of the site, incorporating 1-8
transects and L88 WDDFs, as well as pH testing at all points to determine whether Problematic
Hydric Soil conditions are present, and applying those procedures to wetland determinations
wherever the data support it.
^t
fh¡c +imà SGM is FôA uesti na ¡ Ela¡¡n¡{arr, l^rtinn nf tha mrnnar{ rrratlrnr{c nn tha cifa The
purpose of the Boundary Confirmation is to assist IHC Scott's planning efforts, to ensure that the
mining plan in development does not impact wetlands or otherwise require a Section 404 permit,
and to inform the application to Garfield County's Community Development department for a Land
Use Change permit. Note that Garfield Countv has specificallv requested the Boundarv Confirmation
from the USACE, since the Community Development department relies on USACE expertise in
determining the presence and extent of wetlands when applying County-level wetland protection
standards.
2
Rifle Gravel Pit #7
Wetlond Deli neotion Re port
FebruorY 2022
o
1.3. Project Information
o Proiect Name:
Rifle Gravel Pit #1
o Armv Corps Action lD:
sPK-2020-OOt72
o Proiect Soonsor:
Tony Roberts
Vice President of Operations
IHC Scott
Phone: 720-889-4442
Emai I : troberts@scottcontracti ng.com
Agent:
SGM, lnc.
c/o Alex Nees
259 Grand Avenue, Suite 200
Grand Junction, CO 81501
Emaíl : alexn@sgm-inc.com
a Proiect D escriotion
New Gravel Pit Development, using wet
mining technique
o Nature of Activitv:
Excavation and processing of material, site
access road construction, and ancillary site
development
Regulatorv Action:
Boundary confirmation request
ESA Coordination:
No potential to cause effect from boundary
confirmation request
a
a Tribal Con sultations:
None required at this time
W¡ld & Scenic Rivers:
None
Water Qualitv Certification :
No regulatory action at this time
Legal Description of Proiect Area:
Section 8, Township 6 South, Range 92
West,
6th Principal Meridian
Latitude/Lonsitude of Wetlands:
39.535387" Latitude,
-LO7 .692775' Longitu de
Aquatic Resources:
18.28 acres of wetlands
1.13 acres of non-wetland WoUS (an
irrigation tailwater ditch)
LocalWaterwav Name:
Colorado River
Hvdrolosic Unit Codes:
CO 140L00050603, Dry Hollow Creek-
Colorado River
Historic Properties:
No potentialto cause effect
a
a
a
a
o
o
o
a
o
3
Rifle Gravel Pit #7
Wetla nd De li neation Re port
February 2022
2, Pno¡ecr Drscnlpr¡oru
IHC Scott is proposing to construct a new gravel pit development project in Garfield County,
Colorado. The project would be new development, located on the site of a cattle pasture receiving
irrigation return flows; the pastures are not intentionally irrigated at this time but have been in the
recent past (Figures 1 and 2). The applicant is proposing partial development of the parcel, with the
intention of confining the pit ¡nfrastructure only to upland portions of the property (generally the
eastern portion), and entirely avoiding direct impacts to jurisdictional wetlands and WoUS
(generally on the western portion of the property).
The subsurface conditions are typical of gravel pits and aggregate mines in the Colorado River
floodplain: the surface layer consists of between one and seven feet of alluvially-deposited fine
sediments (primarily silts and clays), overlying 17-22 feet of alluvial gravels. Shallow groundwater,
connected to the water table of the Colorado River, saturates the gravels and is generally present
throughout the project site at a depth of between one and five feet. These assessments are based
on exploratory subsurface drilling work from 2008 (Appendix E).
The proposed development would be a wet mining operation. ln wet mining operations of the type
IHC Scott proposes, the overburden is removed and stockpiled for onsite use or sale as topsoil, and
the saturated alluvial gravels are excavated in their saturated state using a long-reach excavator.
No dewatering activity or groundwater pumping occurs, and the excavated pit fills with
groundwater to become a pond as mining progresses through the site. This is in contrast to a typical
aggregate mine operation, where dewatering (generally through pumping) lowers the groundwater
and then the pit is excavated with machinery in the bottom of the pit, and after operations are
complete the dewatering stops and the pit is allowed to fill with groundwater to become a pond.
Avery brief conceptualdescription of the proposed mining plan is included here for reference. Note
that permit applications with the Division of Reclamation, Mining, and Safety (DRMS) and Garfield
County Community Development are both in process and specific operational details of this project
may be subject to change based on feedback from these agencies.
o A paved access apron would be constructed to access the project site from the lnterstate-
70 frontage road. CDOT has reviewed the plans and issued an access permit to allow for this
construction.
¡ A processing and sales facility (scale house) would be constructed at the entrance to the
project site. This would include the material stockpiles, loading chute and processor, the
scale house, vehicle parking, and the minimal facilities needed onsite staff (portable toilets,
water tank, work trailer).
o The overburden (L-7 ft of fine sediments) would be removed from the mine area. The
overburden would be used to construct a 5-ft tall perimeter berm around the mine area, to
control visual and noise impacts in accordance with Garfield County Land Use Code (LUC)
standards. The outer edge of the perimeter berm would be located 25 feet from the
boundary of any wetland areas, pending approval of a variance from the 35-foot wetland
setback in the LUC. The berm surface would be stabilized and re-seeded to control erosion.
Any remaining overburden material would be stockpiled at the processing facility for sale as
topsoil.
4
Rìfle Grovel Pit #7
Wetla nd Deli neation Re port
February 2022
a The working surface of the mine would consist of the exposed alluvial gravel surface. A long-
reach excavator stationed on the edge of the pit would excavate material to a depth of
approximately 20 feet. The pit would be full of water, forming a pond that expands as the
excavator continues to remove material, and which is in direct contact with the water table
of the Colorado River via lateral migration through the underlying permeable gravels.
Excavated material would be piled on the edge of the pond for approximately 24 hours, to
allow drainage of free water from the material and back into the pond.
Sideload dump trucks would travel to the pond edge, and would be loaded with the dried
material on a daily basis. The dump trucks would transport the dried material from the active
excavation area to the processing facility, where the material would be stockpiled for
washing, processing, and subsequent sale.
Any agricultural return flows in the tailwater d¡tch, which are est¡mated at less than 2 cfs
during peak irrigation season, would be discharged into the pond. The discharge would mix
with the alluvial aquifer waters which are exposed in the pond, and the combined waters
would migrate laterally through the underlying permeable gravels into the larger Colorado
River water table. Given the minimal flows in the ditch, the large size of the pond (estimated
at 6 acres within the first year of operation), and the highly-permeable nature of the gravel,
the agricultural return flows would have a negligible effect on water levels in the pond. As
excavation proceeds, the eastern portíons of the tailwater d¡tch, which is artificially
excavated in an upland area, would be subsumed into the expanding pond boundaries, until
under fínal conditions the discharge point would be where the ditch enters the eastern
boundary of the property.
Reclamation would proceed in concert with the excavation. A six-foot wide fringe of gentle
slopes (e.g., 5:1- slopes) would be left at the inner edge of the perimeter berm, and planted
with wetland reclamation species. The intention is for the six-foot wide fringe to be nearly
inundated during high-water periods as the water table rises, and then to be progressively
a
exposed as the water table drops during the course of the growing season. Note that this
raft reclam com ia LUC standard
intended to serve as formal wetland mitigation per USACE standards.
o At this time, the proposed mine would operate daily, with excavation and processing
occurring eight months of the year (roughly April - May) and with material sales occurring
year-round. Total recoverable volume is estimated at approximately 300,000 cubic yards of
aggregate, which is expected to support operations for between three and five years. Details
of the proposed operation have been provided to both Garfield County and the Colorado
Division of Reclamation, Mining, and Safety (DRMS). The final planning for the project is still
being developed with a land use development permit currently in review with Garfield
County and a mining plan in review with DRMS. However, under no foreseeable
circumstances would the operating area of the mine be extended into areas that have been
mapped as wetlands.
To determine regulatory authority over the proposed project, a delineation of wetlands and Waters
of the US was conducted in accordance with the USACE 1987 Wetland Delineation Manual and the
Arid West regional supplement. The site assessment included the entire parcel, although the focus
a
5
Rifle Gravel Pit #7
Wetla n d De I i neatio n Re po rt
February 2022
and the Comprehensive Delineation was on the portion of the site where development could
potentially occur, and did not extend to the small "panhandle" on the northeast corner of the
property.
There are a total of 1.13 acres of non-wetland open water within the parcel (all associated with the
artificially-excavated tailwater ditch), and a total of 18.28 acres of wetlands were delineated within
the parcel. lrrigation waters from the ditch clearly provide some portion of the hydrology supporting
the wetland complex. However, shallow groundwater associated with the Colorado River floodplain
and water table are also assumed to be partially supporting wetland conditions. No attempt has
been made to conclusively determine the extent of agricultural water support of the wetlands on
the parcel, and no discussion of jurisdictional status is included in this report. This request is solelv
for a Boundarv Confir ion of the maooed wetland areas. irresoe ctive of potential iurisdictional
status, and IHC Scott intends to avoid direct impacts to all wetlands regardless of jurisdictional
status.
Note that IHC Scott's proposed development plan does involve impacts to the tailwater ditch (see
Appendix A). These impacts would qualify as exempt activities under the Clean Water Act (CWA)
Section 404(fX1XC) exemptions for the construction and maintenance of jurisdictional ditches. This
contention is based on the following points:
¡ The tailwater ditch is a "constructed or excavated channel used to convey water," in this
case one that conveys irrigation waters from their place of use to a discharge point into
natural waters (the Colorado River). lt therefore qualifies as an irrigation ditch under 85 FR
22250.
o The purpose of IHC Scott's diversion of the ditch waters into their excavated pond is to
ensure the continued function of the ditch, which is the discharge of irrigation return flows
to receiving waters. There are no downstream users or water right holders on the ditch; IHC
Scott's obligation as owner of the ditch is to ensure that the irrigation return flows reach the
Colorado River.
o IHC Scott's revision of the ditch design would not include any areas of the ditch that currently
host abutting or adjacent wetlands. This is in recognition of the fact that the wetlands may
also be supported by natural hydrology. IHC Scott intends to alter only that portion of the
ditch that is clearly an artificial channel excavated in uplands with no adjacent wetlands (see
Appendix A). No direct impacts to any wetlands would occur as a result of the ditch work.
o Part 1 of the recapture provision (CWA Section 404(fX2)) would not apply to this work
because there is no intention to convert any area of WoUS to a use to which it was not
previously subject. There are no impacts to wetlands, no conversions of wetlands to new
uses, and no degree of piping the ditch. ln fact, the express purpose of the ditch alterations
is to avoid impacts to the wetlands while continuing tq fulfill the requirement to discharge
the lrrigation return flows.
o ln addition, Part 2 of the recapture provision (CWA Section 404(fX2))would not apply to this
work because there would be no impairment to the flow or circulation of WoUS. The natural
hydrology supporting the wetlands on the western portion of the property would not be
altered, since the proposed mine would not alter the current conditions under which shallow
groundwater passes under the site, through permeable gravels, and proceeds to
6
Rifle Gravel Pit #7
Wetla nd Deli neation Report
Februory 2022
downstream waters. ln addition, the existing agricultural waters that may be partially
supporting the wetlands would continue to be available, given their discharge into the pond
and incorporation into the shallow groundwater on the site.
This discussion tiers to and relies upon the definitions and procedures jointly laid out by the USACE
and the U.S. Environmental Protection Agency concerning the applicability of ditch exemptions (EPA
2O2O).
This report has been prepared in accordance with regulatory guidance for submittal to the USACE
to request a wetland boundary confirmation. No nationwide permit is requested at this time. This
report has been submitted to assist in planning and communication between IHC Scott and the
regulatory agencies, primarily the USACE, but also Garfield County.
1.1". Consultation History
As part of the project review, the U.S. Fish and Wildlife Service (USFWS) lPaC database was queried
for potential occurrence of Threatened, Endangered and Proposed species as well as Critical
Habitats. The project site was assessed for potential presence of listed species and habitats that are
regulated under the Endangered Species Act. The review indicated that the property contained
marginal potential for the occurrence of a single Threatened species (Ute ladies'-tresses orchid) and
known occurrence of a single Candidate species (monarch butterfly). See Section 5 for a more
detailed discussion of federally-listed species. No consultation with USFWS has been undertaken or
is proposed at this time.
A cultural resource survey has been completed for the parcel. Segments of three historic linear
resources were recorded. All were field-evaluated as not eligible, therefore a finding of "No Historic
Properties Affected" was recommended for any reasonably-foreseeable development on the
project site. The Class lll report is attached to this document as Appendix D.
7
Rifle Gravel Pit #7
Wetland Delineation Report
Februory 2022-
3. Pno¡ecrAnen Dsscn¡pr¡oru
The primary vegetation type across the Project area is historically irrigated pasturelands. Historic
aerial photography shows the parcel had been flood irrigated for many years. With changes in
utilization of the agricultural land, the extent and amount of irrigation has expanded and contracted
over the past several decades. There are irrigation ditches and irrigation flows on the parcel that at
one time were directed toward supporting pasture vegetation, and they have not been consistently
used in the last two seasons since IHC Scott acquired the property. There are also discharges from
the irrigation tailwater ditch which terminates on the property, where it discharges agricultural
water to flow in a naturalized channel to an eventual confluence with the Colorado River. These
surface inputs are contributing to the extent of wetlands on the property. However, the surface of
the parcel is also elevationally very close to the Colorado River, and it is assumed that elevated
ground waters are contributing to the support of wetlands as well.
Typical conditions in the upland part of the property. Bulrush and Juncus wetlands on the property.
The pasturelands are dominated by agricultural graminoids and ruderal weeds. There is minimal
evidence of recent seeding or other direct management, and some representatíve dominant species
include common timothy (Phleum pratense - FACU), inland saltgrass (Distichlis spicøto - FAC), alkali
sacaton {Sporobolus airoides - FAC), white goosefoot (Chenopodium olbum - FACU), and chicory
(Cichorium intybus - FACU). Russian olive (Elaeagnus qngustifolia - FAC) is a dominant component
in portions of the parcel, generally in transition areas between pastures and wetlands.
The wetland communities grade generally from east to west, from occasionally saturated areas
dominated by arctic rush (Juncus balticus - FACW), timothy, and saltgrass, through seasonally
saturated wetland meadows dominated by sedges (Corex spp.) and arrowgrass (Triglochin moritima
- OBL), and into perennially flooded marshes dominated by obligate emergent species such as
bulrush lSchoenoplecfus spp.) and cattail lTyphø løtifolial.
Using data from the nearest weather station (Rifle), recorded temperatures for the reporting period
(1910 to 2009) range from an average low of 9 dcgrcc Fahrcnhcit ("F) in January to an average high
of 90"F in July. Average annual precipitation of 11.6 inches consists primarily of winter snows, and
summertime rain precipitation events (Western RegionalClimate Center IWRCC] 2O2Ll.
8
RiÍle Gravel Pit #7
Wetlond Delineatian ßeport
Februsry 2022
3.1,. landowner Contact lnformation
The resource delineation reported here is limited strictly to the project parcel.
Co Hwy 346
silt, co 81652217908300103IHC Scott
9
Wetlond Delineation ReportFebruary 2022Rifle Gravel Pit #1Figure 1: Vicinity Map{.r P;r$¡s ú?¡f¿s $rw{s 9$}v lå$ r$llCãrft\¡l- .1.,r: r r:i ,i,¡-:-.,:1illr.."1\r ':i "lr lt;rr/ -,i,ilh.r,)ìl"{;rjr *,, - ,ll ,'rì!r¡';,' i;r1t¡ fr:., i:ì.:r;"*ïi,/f¡! fl {t¡x¡4, $rr l¡1rljT'.:l'l ,:rr::¡!t:r', ";tr.1ì. ilËtii, . .tr: lJss frlT./s,,-i.lfafmilïY[{åPÊr'k Pr ,!,,t" ¡t"j F¡*,:. .t$3 9f "rÍ$s 9?¡{Åff,. rI i',t,\itt.rlúys.+!* v)rt' ..., .ls '¡r l,fA10
Wetla nd De I i neotio n Re po rtFebruory 2022Rifle Gravel Pit #7Figure 2: Topographic Map-laiRíllofrrY¡ÊIIIIIIIßiflc Ftlls9ti¡,"rnt¡1:)s\ñ År:; {;' '/,r:1"¡{}s1;;f\¡* u*" *r sltlr'.¡jh,rJ!,(4r,r Ìy :. r:lllulyt.t- r,:,lll. [J¡:rtjlr"¡ffi *,rr"u* p.,!tö1itr. ${.}:tâlr-' !'i! tlu,rc :;t:¡î tc-"Êl:/;tlr'1.*-Ìigù¡/ -,x1r;çt"ì1it i;rr'{lå56MÐrYti:¡,illiw'.$i)tt,llirArIus6s ImCI MpF '1. t¿ .r t. .t : pr,,.ttßJ1tdI¡að'âs$tttrSiIf15n-/a¡$""1:: \*¡tatt¡.tt.t¡rüûtrlt,,:.l;Ðltss 9¡t1ITrt :,¡lJ{þlanlcr)tttCifutrGulrã
Rifle GrnvelPit #1
Wetland Delineation Report
Februøry 2A22
4. Wrr¡.nND & WATERS DEUNEAT¡oN
IHC Scott contracted with SGM for the delineation of all potential wetlands and WoUS on the parcel
to assist with project planning and development. As summarized in Section 1 and described in more
detail below, a comprehensive delineation has been performed at the request of the USACE,
incorporating 18 transects spaced at L00-ft intervals, resulting in collection of L88 WDDF data
points.
All delineations and assessments were completed by SGM's Senior Ecologist Alex Nees, a certified
wetland delineator, with the assistance of SGM's Eric Petterson, also a certified wetland delineator
4.L. Description of Desktop Review and Preliminary Area Evaluation
SGM obtained and reviewed maps, aerial photos, and soil map unit descriptions of the project area.
SGM also reviewed test bore data from 2008, describing subsurface conditions and water levels.
The entire investigation area has also been traversed on foot repeatedly and extensively, in the
course of various assessment requirements for County-level permitting and DRMS permitting. All
WoUS and potential wetland areas were evaluated within the existing parcel boundaries at the
time of the investigation. The exception is the previously-mentioned northwest extension of the
parcel, which has been assessed but not delineated. Figure 5 provides the location and extent of
the transects, which corresponds to the area included in the delineation effort.
The goal was to evaluate all WoUS and wetlands within the area of potential gravel pit operations,
in order to avoid direct impacts regardless of minor changes that are incorporated into the design
during the permitt¡ng process.
4.1.1, National Wetland Inventory Review
SGM reviewed the National Wetlands lnventory (NWl, Figure 3) which indicated the presence of
two wetland types within the parcel:
o PEMlC (Palustrine Emergent, Persistent, Seasonally Flooded)
o This includes the large majority of wetland areas
o Generally, corresponds to the wet meadows that were irrigated and grazed by cattle
o PEMlF (Palustrine Emergent, Persistent, Semipermanently Flooded)
o Limited to the western areas of the parcel
o Generally corresponds to areas of permanent surface water in the tailwater ditch
and naturalized discharge channel, dominated by bulrush and cattail
The type and extent of the PEM wetlands was generally confirmed based on the field investigation,
although the boundaries vary widely in some areas compared to on-the-ground conditions. Given
the site used to receive large volumes of irrigation waters (which are now confined to the irrigation
tailwater clitch), hydrology of these wetlands likely varies widely based on whether irrigation
waters are being applied or not. These changes are evident in the aerial photography that is
available. ln generalthe extent of PEMLF wetlands was found to be highly accurate. The extent of
PEMlC wetlands was found to be somewhat less extensive in the fíeld than what was mapped in
t2
Rifle Grovel Pit #7
Wetl o nd De I i n eotion Re po rt
February 2022
NWl. Due to the subtle and variable conditions of surface water conditions, all wetlands were
categorized simply as PEM wetland type.
ln addition to the PEM wetlands, one other WoUS type was delineated on the parcel:
o R3UBHx (Riverine, Upper Perennial, Unconsolidated Bottom, Permanently Flooded,
Excavated)
o This feature is the open water found in the tailwater ditch. The ditch was mapped
in NWI as PEMl.F, but it appears that ongoing maintenance dredging has continually
removed emergent vegetation in the majority of the channel and preserved open-
water conditions.
See Figure 3: National Wetland Indicator Map, and Figure 6: Delineated Wetlands to compare
NWI mapping to the field delineation.
4.I.2- SSURGO Soil Review
SGM reviewed the Soil Survey Geographic Database (SSURGO, Figure 4) which indicated the
presence of four soil types within the parcel. The mapped soil unit boundaries were found to be
roughly accurate, although soil texture did vary widely, likely as a result of the combination of past
agricultural treatments and historic flood deposition/scouring events.
o Halaquepts, nearly level: This soil type dominates the western half of the property. lt is a
saline soil type that experiences both a seasonal high water table and a period in which
evapotranspiration brings salts to the soil surface (USDA 2015). lt is classed as moderately
to strongly saline, and is a hydric soil type. The halaquepts on the site are likely derived
from the local loams and sandy loams, but have been modified by the high water table and
evapotranspirative demand. The reported alkalinity of this soil is Moderately to Strongly
Alkaline, qualifying it as a problematic hydric soil per the Regional Supplement to the Corps
of Engineers Wetland Delineation Manual: Arid West (USACE 2010).
o Wann sandy loam, 1-3% slopes: This soil type surrounds the eastern portion of the
tailwater ditch on the property. lt is a poorly-drained alluvial deposit that is non-saline to
slightly saline. lt is similar to the halaquepts, but does not experience the seasonal high
water table and evapotranspiration necessary to concentrate salts at the soil surface. lt is
a hydric soil type.
o Kim loam, 3-6% slopes: This soil type is limited to the northeast corner of the property. lt
is also an alluvial deposit, but is well drained and does not have a high water table. Salinity
is negligible and it is not a hydric soil type.
. Olney toam, 1-3% slopes: This soil type is limited to the southeast corner of the property.
It is very similar to Kim loam, being an alluvial deposit that is well drained and does not
have a high water table. lt may be very slightly saline. lt is not a hydric soil type.
ln summary, the soil review indicated that the project site is entirely dominated by loam deposits
overlying the alluvial gravels. The low-lying areas on the west end of the property are moderately
to strongly saline due to seasonal saturation/inundation and a strong evapotranspirative pump
that brings salts to the surface. Other portions of the site that do not experience
13
Rifle Gravel Pit #L
Wetlond Delineation Report
February 2A22
saturation/inundation are not notably saline. These mapp¡ng results were generally confirmed by
field investigations, and also correspond to the findings of some investigatory sub-surface drilling
logs (Appendix E).
4.2. Description of Field Delineation Procedure
As described in Section 1.1, the initial delineation effort and ARDR was rejected by the USACE, and
a comprehensive delineation was requested based on the challenges of the site. SGM developed a
field delineation procedure for this project in cooperation and coordination with USACE staff (T.
Morse, pers. comm Aug 2021). The wetlands and waters investigations was not conducted using
the Routine Determination Method, but was based on the Comprehensive Determination
methodology set forth in the USACE Wetland Delineation Manual (USACE !987), and was modified
based on the Regional Supplement to the Corps of Engineers Wetland Delineation Manual: Arid
West (USACE 20L0), with regard to problematic hydric soils. The delineation also incorporates the
guidance document "lnformotion Needed for Jurisdictional Determinotions - US Army Corps of
Engineers."
The comprehensive delineation was completed using the following method:
t. Nine piezometers were installed throughout the property, to a depth of lO-feet below
grade. Hydrologic data were collected from the site to determine the hydrographic gradient
underlying the site, based on observed groundwater levels as measured at the piezometers.
As expected, the absolute gradient of the groundwater elevation (not in reference to
overlying topography) runs from southeast downwards to the northwest and the Colorado
River.
2. Transects were created in a GIS at 100-foot intervals, covering the entire area of
investigation and running parallel to the hydrographic gradient and perpendicular to the
expected contour lines of the underlying groundwater surface. Eighteen (L8) transects were
required to cover the entlre project area: they were numbered Transect L through Transect
18 (T1 - T18, Figure 5).
3. Data points were established at L0O-foot intervals along each transect, using a GlS. This
results in a lO0-foot-square grid of WDDF samples across the entire area of investigation.
Data points that fell in areas of open water or unambiguous wetlands (cattail marshes and
similar) were discarded as redundant. The remaining data points were numbered from the
southeast end to the northwest end of each transect, and identified according to the
transect they were located on. Thus, the 3'd data point on the 7th transect is referred to as
T7-DP3 (Figure 5). This resulted in a total of 188 WDDF data points distributed across the
property.
4. Using a GPS with the GIS data loaded on it, the delineation team navigated to each data
point. A WWDF form was completed for each site and a wetland determination made based
on that form, in accordance with the following protocol:
a. A soil auger was used to excavate a 3-inch-diameter hole to a depth of 24 inches or
to the water table, whichever was reached first.
1.4
Rifle Grovel Pit #7
Wetl o nd De li n eoti o n Re po rt
February 2022
b. The pH of the soil was measured at depths of 2-inches, 6-inches, and occasionally
12-inches if more conclusive results were needed. Measurements were taken using
a digital pH meterwith a resolution of 0.1pH and automatictemperature calibration
(Bluelab Soil pH Pen). The pen was calíbrated using reference pH solutions on a
weekly basis during the delineation effort, and was stored in pH-neutral storage
solution when not in use. pH measurements are recorded on all WDDFs.
c. Data points where the soil returned a pH value of 7.9 or higher qualified as
"Moderately to Very Strongly Alkaline Soils" per the Arid West Manual. ln these
settings hydric indicators may not form because the alkalinity reduces the ability of
iron and manganese to enter solution and form recognizable indicators. At these
data poínts, the "Other" indicator under Problematic Hydric Soils was marked, and
soils were not further evaluated, as they were assumed to be Hydric'
d. The procedure for Problematic Hydric Soils determination was followed (USACE
2010). Data points where soil pH was 7.9 or greater were considered to be wetlands
if hydrophytic vegetation and wetland hydrology indicators were present,
regardless of the observed presence of hydric soil indicators.
e. For data points with soil pH of less than 7.9, the standard wetland delineation
protocol was followed. The soil column excavated by the auger was evaluated for
the presence of hydric indicators. The plant species at the data point were recorded
and used to determine whether hydrophytic vegetation was present, and hydrology
was evaluated using direct observation of the auger hole, in combination with
evaluation of the primary and secondary hydrology indicators.
f. ln summary, data points that indicated the presence of hydrophytic vegetation,
hydric soils OR a pH of 7.9 or greater, and wetland hydrology, were coded as
wetlands.
Based on the WDDF findings, the data points were coded as Wetland or Non-wetland in the
GlS. The delineation team then mapped the wetland boundaries displayed in Figure 6 in the
field using a sub-meter accuracy GPS, accounting for the data point findings and the totality
of observations from the site This mappins is presented in Fieure 6. and reoresents the
wetland boundaries for which SGM is seeking a Boundarv Confirmation. based on
comoliance with the Com nrehensive Determination method as mo ed oer the suidance
5
in the West ReeionalSup olement.
Of note, alpha, alpha-dipyridyl dye was applied to saturated soils on a test basis, on numerous
occasions. ln no case was the dye found to be a reliable indicator of the presence of reduced iron
in the soil, either in high-pH situations or in cases of obvious reducing conditions.
15
Wetlond Delineøtion ReportFebruory 2022Rifle Grovel Pit #7Figure 3: National Wetlands lnventoryálrg¡illrh¡ttrlfrÁ tr|¡f,¡ trhl.¡$IÅhtÅlt5åt¿ln FÌ{{trsi'f \tl th\|-' ,',.' , -, ',1 ¡t ,1.r'*l-" ,::,,:,'':'l,l ¡ -,1",;t\ttv ¡FtllliHV/I Lr/rtl¡îîdir./¡¡ j¡ii"ì" :'1r'::: -i,i.:'t.),:tål¡",, ..;,...,', i,i"¡i'i,.i r,.,Ì il. i, ,_-ì.," tr¡, i i .l. 11,fü .i .,.,ÅiNSGMtnTn(ruililil.unulm ilfinmïFrqr Pl À{-,¡lk ñrolur<¡f:,':/),'/j¡i:iI !¡ 6ã l) I É I ¡â:lllhrbryi¡|r. !: .! . '. .! 'Ì,r.'r i. t: rl¡i '-'-r.f-r, ""*dafã¡iirrr16
Rifle Grovel Pit #7Figure 4: SSURGO SoilType\ñ nr** oi l,ì!r:sTiçp;.lrn\rr ;¡i *rr Sl"rlrj fiì.Ére,t'.¡* lj*Llnîf lriçr-t*t'l-l Y;;rvtrirr¡r,'ç ¡"U!"vt tlr,aSollTÞ.fi ;, - x¡J.rq.rçrs, tå.rlYþr¡lffi * - xir lcurr.3"6* :fi*rS "l -(hrqykur, l.Sil rra¡rr* " -'.{'mnurrly!rer, l'}-i$rkrpn6SsMW etla n d De I i neotion Repo rtFebruory 2022;;.;; ''j". *,,".j'--''''"- *'"-'i -;';r¡{ Assm60 s0t ïYPtt:r'- l'. ,l ,rr¡- 1..,^ lr¡¡,L7
Rifle Gravel Pit #7
Wetland Delineation Report
Februøry 2022
4.3. Site Hydrology
The hydrology on the site, both surface and subsurface, has been the subject of intense
investigation and debate as the project has been reviewed by multiple regulatory and permitting
agencies, primarily Garfield County's Planning Department and DRMS.
This report will not recapitulate the extensive discussions of the site's hydrology. ln brief summary:
irrigation waters were discharged onto the pastures through active irrigation. The tailwater ditch
still discharges onto the property, both through seepage and direct uncontrolled discharge at its
western terminus. There are also several culverts that appear to pass stormwater andlor
agricultural return flows under lnterstate 70 and discharge onto the property at the southern edge.
ln202I, trespass irrigation flows from the property to the north were discharged for a few months
onto the project site, due to an unmaintained and breached irrigation ditch; these flows inundated
large portions of the northern half of the property, as the flows sheeted across the property to
reach and enter the main irrigation return ditch.
All these sources of surface water input interact with the naturally occurring hydrology which
consists of saturated gravels subsurface of the native soils. These saturated gravels are highly
porous and are known to be relatively thick and uniform. The saturated gravel layer is assumed to
be in direct contact with the water table of the Colorado River, and the height of subsurface
saturation is assumed to rise and fall roughly in parallel with the river flow. The subsurface
conditions are not directly connected to the surface water discharges, but the surface and
subsurface waters interact in complex ways to create the mosaic of vegetation community types
observed.
It is not possible for IHC Scott to stop the agricultural/surface water discharges onto the property,
due to existing easements and other legal rights/obligations. As has been díscussed with the USACE
on several occasions (T. Morse, pers. comm.), in the absence of a way to stop or redirect the
agricultural flows, there is no practical method for determining whether and to what extent the
wetlands may be agriculturally induced. All the wetlands on the site drain to the south and west
through a naturalized channel and thence through another ditch to reach the Colorado River. Given
the assumption of at least partially natural hydrology and the existence of downstream
connectivity, all wctlands on thc parcel are being considered potentially jurisdictional, and IHC
Scott is not requesting that the USACE make a jurisdictional determination for any of the wetlands
reported here.
4.4. Preliminary Results within Investigation Area
The site contains a complex mosaic of mesic irrigated pasture and wetlands. Generally speaking,
soil saturation and wetland character increases as one traverses the parcel from east to west. The
western regions are unambiguously wetlands, containing extensive marsh vegetation. The eastern
regions are unambiguously uplands, containing pasture grass and ruderal vegetation. The
transition between the two is complex with many intermediate conditions, and determining a
precise boundary of the wetlands is challengíng. Based on the field investigation, wetland extent
appears to be controlled by microtopography on the parcel, with wetlands occupying low-elevation
arcel from the west. A total of 18.28 acres of wetlandsareas that extend into the center of the p
18
Rifle Gravel Pit #7
Wetl o n d De li n eatio n Re port
February 2022
were delineated within the parcel, all of which are cons¡dered potentially jurisdictional and would
be avoided by IHC Scott's development plan (Figure 6, and Appendix A). 1.13 acres of non-wetland
WoUS associated with the open water of the tailwater ditch were also delineated. The tailwater
d¡tch is artificially excavated and carries irrigation waters from their point of entry on the eastern
edge of the parcel towards the discharge point along the western edge of the parcel. However the
ditch is set within the floodplain of the Colorado River and has a discharge to the Colorado River.
Based on these fa ctors the tailwater ditch has a nexus to a WoUS and Traditi onallv Navisable
Waterwav . and is considered to be potent llv iurisdictional. A wetland delineation ma p
(Figure 6) depicts the lnvestigation Area (i.e., the parcel boundaries), the wetland boundaries, and
the location of all aquatic resources noted during the survey. L88 WDDF points were established
during the survey to clarify and support the wetland boundary delineations, and the data forms
are included in Appendix B.
4.4.1. Tailwater Ditch (R3UBHxl
The tailwater ditch in this area supports and
abuts a wetland fringe as shown on Figure 6; the
wetland fringe generally occurs in the western
portions of the property. Where no abutting
wetlands are mapped, ongoing
dredging/maintenance activities, and steep
banks along the irrigation ditch have prevented
the establishment of wetland vegetation in the
ditch. The banks are clearly defined by the
artificial excavation line, transitioning directly
from open water to mesic pasture conditions.
Therefore, the ordinary high water mark
(OHWM) was delineated as the boundary for this non-wetland WoUS feature
4.4.2. Emergent Wetlands (PEM)
Areas of emergent wetlands (PEM) within the lnvestigation Area are associated with irrigation
waters and with low-lying areas that may have natural subsurface hydrology (Figure 6).
19
Rifle Grqvel Pit #7
Wetland Deli neation Report
Februory 2022
Veqetdtlôn; The wetland communities grade
generally from east to west, from mesic and
occasionally saturated areas dominated by
arctic rush (Juncus bolticus - FACW), common
timothy (Phleum protense - FACU), and inland
saltgrass (Distichlis spicota - FAC), through
seasonally saturated wetland meadows
dominated by a number of sedges (Corex spp.)
and arrowgrass (Iriglochin maritimo - OBL).
Western portions of the parcel are perennially
flooded marshes dominated by obligate
emergents such as bulrush (Schoenoplectus
spp.) and cattail (Typho lotifolial.
Soils: The soil conditions have been described in detail in Section 4.1..2 and Section 4.2.|n general,
the soil pits associated with each data point generally corresponded to the SSURGO mapping. The
majority of the mapped wetland areas are within the halaquept zone or adjacent to it. However,
the soil pH was not consistently 7.9 or greater within the halaquept zone, and a large portion of
the data point determinatÍons rested on typical hydric soil indicator presence. ln general, soils pits
inside the wetland boundary showed evidence of anaerobic, redox conditions, most commonly
with a depleted soil matrix consistent wíth the Depleted Matrix indicator (lndicator F3). Soil pits
outside the wetland boundary generally lacked hydric soil indicators within the upper 12 inches of
soil, although redox traces were commonly observed at greater depths. The observed conditions
strongly suggest that the mapped wetlands on the property are saturated or have standing water
for a signifícant portion of the growing season. Soils outside the wetland boundaries have
seasonally shallow groundwater, but not for a sufficient period to generate redox conditions within
the upper L2 inches of the soil.
Hvdroloav: At the boundary of the wetland areas, hydrology indicators were generally secondary
indicators only, including visible saturation on imagery, dry-season water table, and a positive FAC-
Neutral Test. Hydrology was obvious in areas with soil saturation and standing water. During the
course of several visits to the site, surface water and saturation was observed to be relatively stable
and constant in extent (aside from where trespass irrigation waters discharged from the property
to the north were halted when the ditches were maintained). Some areas that were mapped as
wetlands displayed cracked soils and salt crusts consistent with depressional ponding and
lndicators 86 and 811.
20
Rifle Grovel Pit #7
Wetlønd Delineotion Report
Februory 2022
4.4.3. Table 1. Summary of Waters of the U.S. and Wetlands in lnvestigation Area
Name Jurisdiction Flow Frequency Receiving
Water Proximity Size (acres)
Last Chance Tailwater Ditch
WoUS - R3UBHx
Potentially
Jurisdictional Perennial Colorado
River Tributary 1.13
TOTAL NON.WETLAND WOUS 7.73
Wetland A
PEM
Potentially
Jurisdictional Semipermanent Colorado
River Adjacent 2.05
Wetland B
PEM
Potentially
Jurisdictional Seasonal
Colorado
River Adjacent 0.1,4
Wetland C
PEM
Potentially
Jurisdictional Seasonal
Colorado
River Adjacent o.o2
Wetland D
PEM
Potentially
Jurisdictional
Seasonal to
Semipermanent
Colorado
River Adjacent 6.00
Wetland E
PEM
Potentially
Jurisdictional Semipermanent Colorado
River
Adjacent 9.86
Wetland F
PEM
Potentially
Jurisdictional Ephemeral Colorado
River Adjacent 0.27
TOTALWETUNDS 78.28
21
Rifle Grovel Fit #LFigure 5: Comprehensive Delineation Study Design!t$.r'' :\/. :.',r,,:"' ':.1-j;ì r;rt'."t ',1 ¡i;!rr": ..:l,t ;1t "î . .i; .: ' ,lt r'"1''.,Ì*SGMWetlond Delineotion ReportFebruory 2022Aüt ?Ëltll$fi ilUl$ïnil STIITF¡ll. Pl t'!n,É rt,. î't; :ø ã|}'.*lùlil-¿þ )!t')t|i)1,,.a., þttt.t lî.í,¿{{ fh 'r':ÂlÞaÁ¡r Ès,.-.-- .-,-. - -,.-22
Rifle Gravel Pit #7Figure 6: Delineated Aquatic Resources{-'m.tttfiü[0uT[ffismüsRi'le Fc Þrn¡rtWetlond Delineation ReportFebruary 2022!* 'i.¡1; :ì, i,\.ri;Xiti ":,^Ì"-r r.,1i :. 5i.r',1. !:i,1r'/:'rl-'::r,-ii' -,:li ¡,;r,I r ' r !.i - \'r !, - ¡I I -i .i - - ¡ r... j...., -'0rIifi¡.rtpd lVrllnl}Cr';rl '¡t¡,r .,r.1.'.iî 11 l;tti¡. :'rli-r iif/.';,t,å5GMtiai.¡çss i)¡1+'/ftt'I i'--"'¡l" .ì, .i.!¡ li'/trlrt.tIs-,,;..d.- ' _'.r 'Crri;'¡/:r:i;I rtu, ç*t1- :1¡,.¡.- l¡¡ 7¡lCrÈn0/ F )ı¡:¡r¡IAB
Rifle Gravel Pit #1
Wetlu n d Deli n eotio n Re po rt
February 2022
5. Fro¡Relrv Lrsreo TnRenr¡ru¡D oR ENDANGERED Spec¡es
At this time, IHC Scott is only requesting a Boundary Confírmation, with the intention of completely
avoiding impacts to the wetlands on the property. Based on this avoidance directive from IHC Scott,
SGM has not identified any other federal nexus for the project at this time. A brief discussion of
federally listed species follows here, to inform the USACE and the planning process.
Seven federally listed species and one Candidate species were evaluated for their occurrence on
or adjacent to the parcel, per the USFWS Threatened and Endangered species list prov¡ded by the
lPaC database (USFWS2022). Based on this analysis, the USFWS identified the Mexican spotted
owl (Strx occidentalis lucidal, yellow-billed cuckoo (Coccyzus omericanus), bonytail chub (6ilo
elegansl, Colorado pikeminnow (Ptychocheilus lucius), humpback chub (6ilo cypho), razorback
sucker (Xyrauchen texønusl, monarch butterfly lDonøus plexippus), and Ute Ladies'-tresses
{Spironthes diluvialis) as potentially occurring in the area.
Mexican Spotted Owl - Threatened. This species occurs in closed canopy conifer forests and
deeply incised canyons in desert habitats. The project area is outside of the range of this species,
and there are no canyons or coniferous habitats in the project area. There is no likelihood that
Mexican spotted owls forage in the project area, gÍven a lack of suitable habitat of any type. This
project would have no effect on the Mexican spotted owl or their habitats.
Yellow-billed Cuckoo - Threatened. This species occurs in dense riparian habitats with cottonwood
lPopulus deltoides) overstories with dense understory shrubs near rivers. The project area occurs
at the edges of the general range of yellow-billed cuckoo but is located outside any mature riparian
woodland habitats. The site is dominated by Russian olive and pasture conditions, and is heavily
grazed with minimal shrub cover. No mature riparian woodland/shrubland habitat suitable for the
species occurs on the parcel. There are no known occupied habitats in the near vicinity and no
records of cuckoo occurring in the greater area; it is highly unlikely that cuckoos forage in the
project area, given a lack of suitable riparian habitats. This project would have no effect on the
cuckoo or their habitats.
Colorado River Endangered Fish - Endangered. The USFWS identified the bonytail chub, Colorado
pikeminnow, humpback chub and the razorback sucker as potentially occurring or being affected
from activities on the parcel. These species occur in lower elevation, larger rivers associated with
the Colorado River. The Colorado pikeminnow and razorback sucker have mapped Critical Habitat
extending up the Colorado River to the Highway 13 bridge in Rifle. Potential activities on the parcel
would not occur in the Colorado River and would not discharge sediments into the river; the parcel
is approximately five river miles upstream from designated Critical Habitat.
The project would result in minor water depletions as a result of increased evaporative losses from
the surface of the dredged pond as compared to current conditions. IHC Scott is required to
develop a Supplementary Water Supply Plan (SWSP), which would replace those losses with
releases to the Colorado River from other water rights held by IHC Scott. As a result of the SWSP,
there would be no indirect loss in in-stream flows as a result of the project. The project would also
be required to implement a stormwater management plan, in compliance with DRMS regulations
24
Rifle Grovel Pit #7
Wetl o nd Del i n eatio n Re port
February 2022
as well as for Garfield County LUC standards. This would mitigate the risk of significant
sedimentation impacts to these fish.
Due to the requirement to provide supplementary water to offset evaporative losses, as well as
implementation of stormwater controls, it is not anticipated that the project would result in any
measurable or meaningful impacts to occupied habitats downstream or would measurably or
meaningfully impact the listed fish. Given these factors, activities on the parcel would have no
effect for the listed Colorado River endangered fish species and their Critical Habitats.
Monarch butterfly - Candidate. Candidate species are not afforded full protection under the ESA;
however, the USFWS encourages their consideration in environmental planning, and the USFWS
regulatory guidance indicates that Candidate species should be treated similarly to Proposed
Species with regard to inter-agency consultation requirements. lnformal consultation is requested
when a provisional "is likely to jeopardize" determination is reached for a Candidate species
(usFWs 1-998).
Monarch butterfly adults feed (gather nectar) from a variety of flowering plant species. However,
the monarch butterfly only lays eggs and larvae only feed on milkweeds (Asclepios spp.). The
western population overwinters in various coastal sites in central and southern California, and
central populations overwinter in Mexico. Monarchs have multiple generations during their
migrations; the second, third and fourth generations return to their northern locations in the
United States and Canada in the spring.
The project area contains migratory and overwintering habitat for the monarch butterfly. Showy
milkweed (Asclepias speciosø) is an abundant component of the vegetation in the transitional
zones along the boundaries of the wetland areas. Adult butterflies and several monarch caterpillars
were observed feeding on milkweeds at the western edge of the property. Western Colorado is
not part of a major monarch migration corridor, but the site is being used by migrating adults and
as a potential overwíntering site for the dispersed population in the area.
Proposed development would mostly occur outside the mesic/wetland meadows where the
majority of milkweed is located, therefore direct impacts to host plants and habitats would be
mostly avoided. The project would result in the complete loss of vegetation from approximately
20 acres of the property, which would result in potential direct impacts to chrysalis and caterpillars
and reduce the foraging vegetation available to adult butterflies. This may result in minor, localized
impacts to migrating monarch butterflies, and may reduce the attractiveness of the site as an egg-
laying site.
Development of the parcel is not likely to jeopardize this Candidate species, as the project may
affect individuals but is not expected to alter the species' overall range and life history patterns.
USFWS consultation is not required by ESA for Candidate species where an action is not likely to
jeopardize the species' existence.
Ute Ladies'-Tresses - Threatened. The project area occurs outside the known range of the Ute
ladies'-tresses orchid, and is a significant distance from the nearest known populations in the
Roaring Fork Valley. The parcel does contain wet meadow conditions that are potentially suitable
habitat for the specíes, although similar habitats in the Colorado River valley have been searched
25
Rifle Gravel Pit #7
Wetl a n d De li neotio n Re port
February 2022
repeatedly and no orchids have ever been located. The potential habitats on the parcel have been
incidentally evaluated by a trained and experienced orchid surveyor in the course of wetland
assessments, and no orchids have been located. However, no systematic survey meeting USFWS
standards has been undertaken on the parcel at this time. Activities on the parcel are not expected
to directly impact effective habitats since the wetland areas would be avoided, and as previously
discussed the project would not substantially change the existing hydrology that supports these
wetlands. Given the location outside of the known range, and the avoidance of impacts to
potentially-suitable habitat, activities on the parcelwould have no effect on the Ute ladies'-tresses
orchid.
5.1. lmpacts to Bald and Golden Eagles
The Bald and Golden Eagle Protection Act is a Federal statute that prohibits anyone without a
permit issued bythe Secretaryof the lnterior, from "taking" bald orgolden eagles, includingtheir
parts, nests, or eggs (16 U.S.C. 5 1532(L9)). To ensure avoidance of take, per Colorado Parks and
Wildlife guidelines for compliance with the federal statute {CPW 2O2O), human encroachment is
prohibited within 0.5 miles of active nests from December L5 through July 15.
The project is within bald eagle winter range, but no mapped nest sites occur within 1.5 miles of
the parcel boundaries. Nests are mapped farther upriver, and a roost site is mapped approximately
0.25 miles north of the parcel boundary, located on the far side of the Colorado River. During
repeated visits to the site, SGM biologists have not observed bald eagles to be present at the site
or in the vicinity. SGM recommends a determination that development on the parcel would not
result in any level of impact to bald or golden eagles.
5.2. lmpacts to lndian Lands
The project area is located on private lands; the project is not located on lndian lands
5.3. Cultural Resources
A Class lll cultural resource survey was completed by Flattops Archaeological Consultants (FAC) on
February 3 and 8, TQZL. Segments of three historic linear resources were recorded during the
survey. Allthree sites were field evaluated not eligible, so the assessment of the sites as supporting
or non-supporting was not applicable (Appendix D). FAC recommended a fínding of "No Historic
Properties Affected" for any reasonably-foreseeable configuration of the proposed project.
26
Rifle Grovel Pit #1
Wetl o n d De li n eotion Re port
February 2022
6. Rrre Re¡uces
Colorado Parks and Wildlife (CPW). 2020. Recommended Buffer Zones and Seasonal Restrictions for
Colorado Raptors (2O2Ol. Available at:
https://cpw.state.co.us/Docu ments/Wild lifeSpecies/LivinsWithWildlife/Raptor-Buffer-
Guidelines.pdf
Environmental Protection Agency (EPA). 2O2O. Joint Memorandum tothe Field between the U.S. Deportment
of the Army, Corps of Engineers ond the U.S. Environmental Protection Agency concerning exempt
construction or mointenonce of irrigotion ditches ond exempt mointenance of droinoge ditches
under Section 404 of the Cleon Woter Act. Available at:
https ://www.epa.eov/sites/defa u ltlf i les/2020-
O7ldocuments/final ditch exemption memo iulv 2020 with epa.pdf
Lichvar, R.W., D.L. Banks, W.N. Kirchner, and N.C. Melvin. 20L6. The National Wetland Plant List: 20L6
wetland ratings. Phytoneuron 2016-30: 1-17. Published 28 April 2016. ISSN 2153 733X Natural
Resource Conservation Service. 2017. SSUGO Database.
National Resource Conservation Service (NRCS). 2021. Web SoilSurvey. Available at:
https://www. nrcs.usda.gov/wps/portal/nrcs/detail/soils/survey/?cid=nr cs142p2_053627
United States Army Corps of Engineers (USACE), Environmental Laboratory. 1987. Corps of Engineers
Wetland Delineation Manual. Wetlands Research Program Technical Report Y-87-L.
USACE. 2008. Environmental Laboratory, Regional Supplement to the Corps of Engineers Wetland
Delineation Manual: Arid West Region (V.2, ERDC/EL TR-08-28). US Army Engineer Research and
Development Center. Vicksburg, MS.
USACE. 2005. Regulatory Guidance Letter No. 05-05. Ordinary High Water Mark ldentification. December 7,
2005.
United States Department of Agriculture (USDA), Soil Survey Staff. 2015. lllustrated guide to soil taxonomy,
version 2. U.S. Department of Agriculture, Natural Resources Conservation Service, National Soil
Survey Center, Lincoln, Nebraska.
USDA. 2021. U.S. Drought Monitor, July 20, 2O2L Available at:
httos : //d rouehtmon itor. u n l.ed u/M a o aoArchive.asnx. Accessed Aueust 202L.
U.S. Fish and Wildlife Service (USFWS). 1998. Endongered Species Consultotion Handbook: procedures for
conducting consultation ond conference octiv¡t¡es under Section 7 of the Endongered Species Act.
Washington, D.C. Published March 1998.
United States Fish and Wildlife Service (USFWS). 2022.lnformation for Planning and Consultation (lPaC).
Available at: https://ecos.fws.sov/ipac/. Accessed Jänuary 2022.
Western Regional Climate Center. 2019. Regional Climate Summaries. Available at:
http://www.wrcc.d ri.edu/. Accessed August 202L.
27
DEPARTMENT OF THE ARMY
U.9. ARMY CORPS OF ENGINEER,9, ALBUQUERQUE DIgTRICT
4OO ROOD AVENUE, ROOM 224
GRAND JUNCTION, CO 81501.2520
July 27,2022
Regulatory Division (SPK-2020-0017 2)
SUBJECT: Aquatic Resource Boundary Confirmation
IHC Scott
Attn: Tony Roberts
9200 E Mineral Ave
Centennial, CO 80112
tro berts@scottcontracti n o. com
Dear Mr. Roberts:
We are responding to your request for verification of an aquatic resource delineation
for the Rifle Gravel Pit #1 site. The 50.4-acre project site is located approximately 3
miles east of the Town of Rifle, directly north of lnterstate 70, within the SW % SE % of
Section 8, Township 6 South, Range 92 West, Sixth Principal Meridian, latitude
39.53368', longitude -107.69272', Garfield County, Colorado.
Based on available information, we concur with your aquatic resource delineation fsr
the site, which consists of approximately 18.28 acres of palustrine emergent wetland
and 1.13 acres of non-wetland open water (irrigation tailwater ditch), as depicted on the
enclosed February 8,2022, Delineated Aquatic Resources, prepared by SGM,
Incorporated (Enclosure 1 ).
This verification letter does not constitute a determination of jurisdiction (JD). A JD is
not required to process an application for a Department of the Army permit. lf you do not
require a JD for the site, your permit application may be processed sooner. You may
request a JD for this site at any time prior to starting work in aquatic resources,
including after a permit decision is made. To request a JD for this site, complete the
attached Reguesf for Jurisdictional Determination Form (Enclosure 2) and return it to
this office at the address listed below.
Please refer to identification number SPA-2022-OO172in any correspondence
concerning this project. lf you have any questions, please contact me at the
Northwestern Colorado Branch, 400 Rood Avenue, Room 224, Grand Junction,
Colorado 81501, by email at Tvler.R.Adams@usace.armv.mil, or telephone at
-2-
(970) 243-1199, extension 1013. To complete our Customer Service Survey, visit our
website at: https://requlatorv.ops.usace.armv.mil/customer-service-survey/
Sincerely,
Tyler R. Adams
Project Manager
NW Colorado Branch
Enclosures
cc:
Glen n Hartman n, Garfield Cou nty, o hartman n@oarfield-cou ntv.com
Lucas West, Division of Reclamation, Mining and Safety, lucas.west@state.co.us
Alex Nees, SGM, Inc., alexn@sqm-inc.com
DELI].lEATED AOtJATIC RESOURCESìifle Pit Project!- Area of lnvestigation\-r US or State H ghway\-z- County HighviayTown sh þ/lang e/SectionDelineated Wetlandsþ PEM wetlandsb Last Chance D tch LateralgSGM{ #Kl{h ¡91M*F{f,*lsen*16tsilA{;, Project Lccation!./]t )C,).2ir¡c/::r1l:a)iril,l<l( ii,,i:: cLr¡-aLea ii\,Lìraûi l\ffi'*