HomeMy WebLinkAbout3.0 CorrespondenceOil & Gas Department
Katy Middleton
To: Fred Jarman, Planning Depatmient Director
From: Katy Middleton
Date: June 8, 2007
Re: Oil & Gas review of `Williams Production RMT Co. Cottonwood Compressor Station to
Webster Hill 24 Inch Gathering Line" May 2007 Right -of -Way Application
Fred,
I have reviewed the Williams Production Right -of -Way Application and have constructed
the following comments:
• 15 — Emergency Response Plan — Sec. II 2.a.4
o Several contacts were not included in the Regulatory Notification
description. Add the following contacts:
• Emergency Control Center — 911
• Colorado Oil & Gas Conservation Commission — Jaime Adkins (970) 285-9000
• Garfield County Assist County Manager — Jesse Smith (970) 309-5440
• Garfield County Public Health - Jim Rada — (970) 625-5200 ext. 8113
• Garfield County Oil & Gas Department — Judy Jordan — (970) 625-0973 ext. 2006
• 15 — Emergency Response Plan — Sec. II 2.b.1
o The emergency plan states that WPC personnel should be contacted in the
event of a fire. The Oil & Gas department would advise that the Emergency
Control Center (Fire Department & Sheriff Department) should be
contacted immediately. A delay in notify the Emergency Control Center may
result in time lost and increased damage.
If you have any questions, please do not hesitate to call me.
Sincerely,
Katy Middleton
Garfield County Oil & Gas Department
(970) 625-5691
June 22, 2007 Sent Via UPS Overnight Mail
Mr. Fred Jarman
Garfield County Board of County Commissioners
108 East 8th Street, Fourth Floor
Glenwood Springs, CO 81601
Re: Reclamation (Revegetation) Bond — Cottonwood Compressor
Station to Webster Hill 24 Inch Gathering Line
Safeco Insurance Company Bond No.: 6470867
$272,500.00
Dear Mr. Jarman:
Williams.
EXPLORATION & PRODUCTION
Williams Production RMT Company
Tower 3, Suite 1000
1515 Arapahoe Street
Denver, CO 80202
303/572-3900 main
303/629-8281 fax
Enclosed please find original Reclamation (Revegetation) bond referenced above
concerning the Cottonwood Compressor Station to Webster Hill 24 Inch (lathering Line
for $272,500.00 dated effective June 27, 2007
Should you nced further information or have any questions, please do not hesitate to
contact me at my direct number (303) 606-4355.
Thank you for your cooperation.
Sincerely,
WILLIAMS PRODUCTION RMT COMPANY
k
tti E. Rives
Administrative Assistant Senior
PER:pr
Enclosures
cc: (W/Encl.)
Yhil Vaughan@Phil Vaughan Construction Mgmt.,, via e-mail pdf CI pvcm@hughes.net
Tom Fiore via e-mail pdf ("i Tom.Fiorc@williams.com
Bond File 6470867
Bond No,; 6470867
RECLAMATION (REVEGETATION) BOND
KNOW ALL MEN BY THESE PRESENTS, that the undersigned Hargath. Inc.
as Principal and Safeco Insurance Company of
America as Surety are held and firmly bound unto Board of County
Commissioners of Garfield County, Colorado, as Obligee in the penal sum of Ivo Hundred Seventy
Two Thousand Five Hundred & No/100--0272,500.00) for the payment of which,
well and truly to be made the said principal and the said Surety, bind themselves, their heirs,
executors, administrators, successors and assigns, jointly and severally, firmly by these presents.
WHEREAS, the Principal has applied for a Garfield County Administrative Pennit and
Garfield County has required a revegetation bond securing Principal's performance under the
Garfield County Weed Management Plan and the principal's "Rehabilitation Plan — Cottonwood
Compressor Station to Webster Hill 24 inch gathering line" as a condition of approval of the
Garfield County Administrative Permit.
NOW, THEREFORE, if such permit is granted and if the Principal shall faithfully
perform its duties under the terms of the permit, then this obligation shall be null and void,
otherwise to remain in full force and effect.
PROVIDED, that if Suretyshall so elect, this bond maybe cancelled as to subsequent
liability by giving thirty (30) days notice in writing to both the Principal and Obligee.
IN WITNESS WHEREOF, the Principal and Surety have hereunto set their hands and
scale this 19th day of June , 2007. The effective date ofthis bond is
June 27th , 2007.
(Seal)
BARGATH, INC.
9a
Ralph A. Hill, Chairman of the Board
Surety:
Safeco Insurance Company of America
Melissa Haddick, 9 L
Attorney-in-fact
Safeco
e
POWER
OF ATTORNEY
Selem insurance Convenes
PO Box 34525
some, WA l0124.1526
No. 5713
KNOW ALL BY THESE PRESENTS:
Thal SAFECO INSURANCE COMPANY OF AMERICA and GENERAL INSURANCE COMPANY OF AMERICA, each ■ Washington corporation, does each
hereby appoint
••••••••"•^•'•"""'DONALD R. GIBSON; MELISSA HADDICK; JACOUELINE KIRK; JOE MARTINEZ; TANNIS MATTSON; TERRI MORRISON;
SANDRA PARKER; CURTIS WILLEFORD; Houston, Texas """""""" '•""""""'•""""""'
Its bus snd lawful attorney(s)-in-fad, with NI authority to exeeule On its behalf fidelity and surety bonds or undertakings and other document' o1 e ekufter
character Issued in the course of its business, and to bind the rospad ve company thereby.
111 WITNESS WHEREOF, SAFECO INSURANCE COMPANY OF AMERICA and GENERAL INSURANCE COMPANY OF AMERICA have each executed and
attested these presents
r the
•Cit[,dsanu ,(ii(ecrf�Ok_l
STEPHANIE DALEY-WATSON, SECRETARY
3rd
day d Auouat ' 2005
MIKE PETERS, PRESIDENT, SURETY
CERTIFICATE
Exusct from du Ey-LOwe 01 SAFECO INSURANCE COMPANY OF AMERICA
end of GENERAL INSURANCE COMPANY OF AMERICA:
'Article V, Section 13. - FOELITY AND SURETY BONDS ... the PnallenL any We President, the Sturm, and any Assistem Vice President appointed for that
purpose by the *fiber in serge of surely operations, shall each have solitarily to eppoht indheduW u adomeye-iwsct or under outer 'pp/update rues with
suthadty to execute on behalf of the Company fiddly and surety bonds and other doavnanb of stroller character Issued by die company M the mune of tea
business... On any Instrument making or evidencing such appointment, the stratum may be affixed by 10celmlie. On any instrument conferrals such authority
or an any bond or undertaking of the company, the seal, ora facsimile thereof, may be Impressed or affixed or in any other manner reproduced; provided,
however, that the Beal shal not be necessary lo the vatduy of any such Instalment or undedaldng.'
Extract from ■ Raoloibn of the Board of Diredoa of SAFECO INSURANCE COMPANY OF AMERICA
and «GENERAL INSURANCE COMPANY DF AMERICA adopted July 20, 1070.
'On any certificate executed by the Sedately or an assistant eaoutery of to Company eatkg out.
d) The provisions of Arad. V, Section 13d By -Lows, and
01) A copy of the powerof-ettornsy appointment, executed pursuant thereto, end
(111) Cerlifykig that said power-of-slausy appointment Is In full for and affect,
the stgnsiun o1 the certifying officer may be by tacelmib, end the seal of Ihe Company may be a facsimile thereof.'
I, Stephanie Daley -Watson. Sunshiny of SAFECO INSURANCE COMPANY OF AMERICA and of GENERAL INSURANCE COMPANY OF AMERICA, do
hereby certify that the foregoing extracts of the By -Lows end of ■ Resolution of the Board of Directors o1 these corporations, and of 1 Power of Attorney issued
pursuing thereto, ere true end correct. and that both the Sy-Lawa, the Resolution and the Powe of Attorney ere set In full fora end effect.
IN WITNESS WHEREOF, 1 have hereunto tot my rend and affixed the facsimile seal of said corporation
this 19th day of June 2007
9-0974/05 4/05
1
STEPHANIE DALEY-WATSON, SECRETARY
Salam and IM Salem logo am nglalarad lredemanu of Salam Corpomien.
wag PDF
ERO Resources Corp.
1842 Clarkson Street
Denver, CO 80218
(303) 830-1188
Fax: 830-1199
Denver • Boise
www.eroresources.com
era(a?eroresources.com
April 5, 2007
Mr. Michael Gardner
Senior Environmental Specialist
Williams Production RMT
1058 County Road 215
Parachute, CO 81635
RE: 24 -inch Bargath Gathering Pipeline Project
Dear Mr. Gardner:
On February 13, 2007 and April 3, 2007 ERO Resources reviewed proposed stream
crossings associated with the proposed construction of Bargath Gathering Pipeline
Project by Williams located in the Parachute District, north of the Colorado River.
The project consists of one 24 -inch pipeline that will be constructed in the spring
2007. Five potentially jurisdictional drainages, including Balzac Gulch, would be
crossed by the pipeline. The pipeline will also cross two unnamed tributaries that
appear to be non jurisdictional because they have no apparent surface connection to
any waters of the U.S.
Activities involving the discharge of dredged and fill material into waters of the U.S.
are subject to the U.S. Army Corps of Engineers jurisdiction under Section 404 of the
Clean Water Act. It is our understanding that the pipeline crossing of the drainages
would involve conventional open trench construction.
The crossing of the five drainages with the pipeline is authorized by Nationwide
Permit (NWP) 12 for utility activities through March 18, 2012. In our opinion,
Williams does not need to submit a PCN to the Corps for this work because it will not
involve mechanized land clearing in a forested wetland, will not exceed 500 feet in
length in waters of the U.S., will not result in the permanent loss of more than 0.10
acre of waters of the U.S., and will not run parallel to the streambed. In order for the
work to be authorized under NWP 12, the specific and general NWP conditions must
be followed. Please note the following conditions that are the most likely to apply:
• Side cast material from the trench excavation cannot be placed in such a
manner that it is dispersed by currents or other forces (i.e., do not side cast
into the channel of a live stream).
• Any exposed slopes and stream banks must be stabilized immediately upon
completion of the utility line crossing of each waterbody (i.e., revegetate).
• Perform the work during low flows.
• Determine that the work will not adversely affect any federally listed
species.
Consultants in
Nonni Rosanna;
and tine Envronmenl
Michael Gardner
Williams Production RMT
Page 2
March 31, 2007
Regional conditions for the State of Colorado have been proposed. Regional
conditions would affect NWP 12 regulations. If the regional conditions are
implemented as proposed, utility line crossings will require a PCN if the utility line
crosses a wetland or perennial drainage, regardless of impact amounts. The regional
conditions would also require placement of a horizontal marker that delineates the
existing ground elevation if temporary fill is to be placed in a wetland.
If you have any questions, please do not hesitate to contact me.
Sincerely,
Clint Henke
Natural Resource Specialist
03200 projects\3203 williams rmt - parachute\bargath and crawford pipelines \letters-reports\proposed bargath pipeline authorization.doc <<P
April 5, 2007
Mr. Michael Gardner
Senior Environmental Specialist
Williams Production RMT
1058 County Road 215
Parachute, CO 81635
Re: Bargath Gathering Pipeline, and Webster -Hill and Rabbit Brush Compressor Stations
Dear Mr. Gardner:
On February 13, 2007, an ERO Resources Corporation (ERO) representative
reviewed potential wetlands and 3 stream crossings east of Balzac Gulch along the
proposed 24 -inch Bargath Pipeline alignment and Webster -Hill compressor station for
the purpose of assessing needs for 404 permitting. On April 3, 2007, an ERO
representative reviewed the Rabbit Brush compressor station location and 1 stream
crossing from the 24 -inch Bargath Pipeline west of Balzac Gulch. The proposed
pipeline and compressor stations are associated with a natural gas development in the
Parachute District (District) of western Colorado and are located within the Grand
Valley field of the District, north of the Colorado River.
It appears that construction of the 24 -inch Bargath pipeline will be authorized
under Nationwide Permit (NWP) 12. The two compressor stations (Webster -Hill and
Rabbit Brush) will not require 404 permitting because neither will impact any
wetlands or waters of the U.S.
Based on the 2007 site visits, a review of USGS Quadrangles, and previous ERO
field visits, ERO determined the following:
Rabbit Brush Compressor Station
• The proposed site was staked at the time of the April 2007 site visit.
• No wetlands or waters of the U.S. subject to Corps jurisdiction under Section
404 of the CWA occur on the site.
Webster -Hill Compressor Station
• The corners of the proposed site were staked at the time of the February 2007
site visit.
• No wetlands or waters of the U.S. subject to Corps jurisdiction under Section
404 of the CWA occur on the site.
• An isolated small stock pond that serves as a detention basin for runoff and
sediment from a nearby road occurs on the site. This small stock pond does
not have a defined outlet and Lacks a connection to any waters of the U.S.
Mr. Michael Gardner Page 2
Williams Production RMT April 4, 2007
• The stock pond occurs at the head of a gulch that is not a water of the U.S.
The gulch lacks a streambed, the bottom is dominated by upland vegetation
common to the adjacent areas (e.g., sagebrush), and lacks an ordinary high
water mark (OHWM).
Drainages along Bargath Pipeline (west of Webster -Hill)
• The 24 -inch Bargath Pipeline crosses five potentially jurisdictional drainages
(Figure 1).
• The five jurisdictional drainages were assessed on site on February 13, 2007
and April 4, 2007. The drainages were determined to be jurisdictional waters
of the U.S. because each have defined streambeds, OHWM, and surface
connections to the Colorado River.
• Balzac Gulch (shown as Drainage 4 on Figure 1) was assessed. Balzac Gulch
is a water of the U.S. because of its defined streambed and OHWM and has a
surface connection to the Colorado River. The proposed pipeline crossing of
Balzac Gulch was not accessible; therefore, it was assumed that Balzac Gulch
would have similar characteristics at the proposed pipeline crossing.
• Two unnamed tributaries immediately west of the proposed Webster -Hill
compressor station were reviewed. These tributaries are isolated, end in ponds
north of Interstate 70, do not have a surface connection to the Colorado River,
and are not depicted on the USGS quadrangle.
Figure 1 illustrates numbered locations of each stream crossing relative to the
proposed 24 -inch Bargath pipeline. Table I lists each stream crossing and
corresponds by number with crossings illustrated in Figure I.
404 Permitting
New nationwide permits are effective as of March 19, 2007 (FR 72, No. 47, 3-12-
07); and are available at: http://www.hq.usace.army.mil/cepa/releases/nwpermits.htm.
National changes proposed for NWP 12 for utility line crossings were not
implemented under the new regulations; however, regional conditions for the State of
Colorado, including changes to NWP 12, have been proposed.
Currently, NWP 12 does not require a pre -construction notification (PCN) for
pipeline crossings that do not result in the loss of greater than 1/2 acre of wetlands or
waters of the U.S., pipelines that do not involve mechanized land clearing of a forested
wetland; pipelines that are less than 500 feet in length in waters of the U.S., pipelines
that result in the permanent loss of less than 1/10 acre of wetlands, or pipelines that do
not run parallel to a streambed. However, under the proposed regional conditions,
pipelines that cross perennial streams or wetlands will require a PCN prior to any
construction activities.
ERO believes that construction of the 24 -inch Bargath pipeline is authorized under
NWP 12 and will not require submittal of a PCN to the Corps according to current
Mr. Michael Gardner Page 3
Williams Production RMT April 4, 2007
Corps regulations. A letter documenting justification for authorization under NWP 12
has been attached.
If you have any questions concerning this project, please feel free to call.
Sincerely,
Clint Henke
Natural Resource Specialist
Attachments
Mr. Michael Gardner
Williams Production RMT
Table 1. Drainage crossings for 24 -inch Baraath eline.
Page 4
April 4, 2007
ERO
Site
ID
Williams
Pro posed
p
Component
Date
Reviewed
Water
Type
Estimated
Drainage
Width
(feet)
Drainage
Involved
in
Activity
Activity
Type
Surface
Connection
to WUS?
Name of
Drainage
it
Connects
to?
1,2
24 -inch
Gathering
Pipeline
2/13/07
Ephemeral
1.0
Unnamed
Pipeline
Y
Colorado
River
3
24 -inch
Gathering
Pipeline
2/13/07
Ephemeral
1.0
Unnamed
Pipeline
Y
Colorado
River
4
24 -inch
Gathering
Pipeline
2/13/07
Intermittent
2.0
Balzac
Gulch
Pipeline
Y
Colorado
River
5
24 -inch
Gathering
Pipeline
2/13/07
Ephemeral
2.0
Unnamed
Pipeline
Y
Colorado
River
Items in Red- 6/8/07 PVCMI Reply
June 06, 2007
Mr. Fred Jarman
Garfield County Planning
108 8'h Street, Suite 401
Glenwood Springs, CO 81601
RE: Review of Pipeline Development Plan and Compressor Station for Bargath, Inc.
Dear Fred:
This office has performed a review of the documents provided for the Pipeline Development Plan
for Bargath, Inc. The submittal was found to be thorough and well organized. The following
comments, questions, or concerns were generated:
1. Pipeline crossings within the plan sheets state that crossings should happen at, "...low flow
period, if possible". The Nationwide Permit 12 requires that it happen at low flow. The
statement, "if possible" should be removed from the details.
Reply: We agree that the Nationwide Permit 12 will guide the work to be done within areas
under the U.S. Army Corp of Engineers jurisdiction. The attached ERO letter dated 4/5/07
details the requirements to be met.
2. The pipeline passes beneath an overhead power line between Sta. 107+71 and Sta. 109+72.
Issues with equipment and overhead clearance and power line appurtenances are not discussed.
The Applicant should coordinate with the power company to verify.
Reply: Please see Tab 22- Construction Management Plan of our application packet. Page 21 -
"Health and Safety' of the Construction Management Plan notes:
"Health and Safety - The following health and safety measures shall be made a
requirement of the pipeline construction work:
• Special precautions shall be taken when working on pipeline segments parallel to,
crossing or near high voltage overhead electric power transmission lines. These
precautions shall include:
o Measuring the pipe -to -ground voltages on pipe sections each day at the
commencement of work, prior to work involving pipe contact and when
directed by a qualified person.
o Rubber tired vehicles operating on a common pipeline and powerline ROW
area shall be strap grounded to mitigate capacitive coupling. Grounding shall
be made using a metal chain or conductive strap connected to the vehicle
frame and contacting the ground.
o Vehicles shall not be refueled on or near an electric powerline ROW.
o The pipeline contractor shall coordinate with affected utilities to avoid utility
disruptions."
Bargath, Inc.
Page 2 of 4
June 6, 2007
Full compliance with OSHA regulations are noted within the contract documents.
29 CFR 1926 Subpart K, Electrical, OSHA Standard 1926.550(a)(15) and other
sections within the regulations note that a mimimum of 10 feet must be
maintained between equipment and energized overhead power lines.
1926.550(a)(15)(i-ii) additionally notes that lines rated over 50kV., minimum
clearance between the lines and any part of the crane or load shall be 10 feet
plus 0.4 inch for each 1 kV., or twice the length of the line insulator, but never
less than 10 feet.
Additional safety precautions will include warning signage on both sides of the
overhead power line alerting personnel of energized overhead powerlines.
3. Whether or not any of the jurisdictional drainages also have mapped floodplains is not
discussed. Garfield County flood plain permits may be required.
Reply: The ERO letter dated 4/5/07 notes that four of the drainages are ephemeral and that
Balzac Gulch is intermittent. I spoke with Clint Henke with ERO 011 6/8/07 regarding this
question of floodplains. Clint and I agree that these drainages have not been mapped by FEMA
and I have verified such on the FEMA mapping website. Additionally, the installation of buried
utilities within any drainage does not effect the flood elevation, as this is a temporary
disturbance of the drainage and this piping is immediately backfilled. This disturbance is
regulated through the NWP 12 noted above in question #1. ERO noted that this is consistent
with their work in other jurisdictions as well. 1 have additionally reviewed section 6.00 of the
Garfield County Zoning Regulations "Floodplain Regulations" and find that the activity of
utility installation, below grade of the bottom of a drainage, does not require a floodplain
development permit in Garfield County.
4. Several roads will be inaccessible during construction- of the pipeline crossings. It is not
discussed what roads will require access to be maintained and means of doing so.
Reply: The roadways to be directly impacted within this project are all roads on private
property. Safety barriers will he maintained to ensure the safety of workmen and workmen
traveling on private property. County Road #246 will be bored and this traffic will not be
impacted.
5. A CDOT permit will be required.
Reply: Please find attached a letter to Fred Jarman dated 6/7/07 requesting an amendment to
delete the 12" Rulison jumper line that would have required a boring of 1-70 and a Special Use
Permit from CDOT. This permit is no longer required.
6. It is not clear whether or not the Bureau of Land Management has the authority to give
approvals for construction on the lands of the United States Naval Oil Shale Reserve.
Reply: Naval Oil Shale Reserve -1 -Properties East of Parachute, CO and Naval Oil Shale
Reserve -3- Anvil Points Oil Shale and Research Facility was transferred to the U.S. Department
of Interior via U.S. Senator Ben Campbell legislation in the late 1990's.
MOUNTAIN CROSS ENGINEERING, INC.
Civil and Environmental Consulting and Design
826 1/2 Grand Avenue, Glenwood Springs. CO 81601
P: 970.945.5544 F: 970.945.5558 www.mountaincross-eng.com
Bargath, Inc.
Page 3 of 4
June 6, 2007
It appears that Parcel numbers 2173-222-00-951 and 2175-082-00-953, noted on sheets 3, 4 and
5 of the alignment sheets within Tab 2, are noted as U.S. Naval Oil Shale Reserve but have
indeed been transferred to the U.S. Department of Interior.
Conversations and negotiations between Williams Production RMT Co. landmen and the U.S.
BLM have confirmed the details of this ownership. We have mailed notice to the U.S. Naval
Oil Shale Reserve in c/o the U.S. Department of Energy office in Land Junction simply
because the federal agencies have not updated the files of the Garfield County Assessor's office.
7. An agreement with the Bureau of Land Management has not been executed.
Reply: This is correct. The SF 299 was submitted to the U.S. BLM on 3/13107 and is attached
in Tab 7. After the license is approved by the BLM a copy of this will be submitted to Garfield
County for their files.
8. To mitigate building movement and settlement, the recommendations of the geotechnical
engineer are that the buildings be built on piers. The use planned for the buildings may not
allow movement and may be required to be built with pier foundations.
Reply: We will follow the recommendations of Geotechnical Engineering Group in regards to
construction of the Rabbit Brush and Webster Hill compressor stations. Each of the buildings
has building permit applications under review by the Garfield County Building Department.
9. The application does not discuss whether or not sewer and water facilities will be necessary for
any employees.
Reply: The compressor stations will be unmanned facilities with one employee reviewing the
facility daily. There will be a portable toilet on-site and water will not be supplied on-site.
10. The traffic impacts discuss construction traffic, which is temporary in nature. The application
should discuss the post construction traffic anticipated and the impacts that traffic will have on
the surrounding roads.
Reply: The compressor stations will he unmanned facilities with one employee reviewing the
facility daily. During maintenance, one additional service truck and employee will he on-site.
This would equal 4 average daily trips to each of the compressor stations. All of these trips will
access CDOT Highway 6 & 24.
11. In the noise analysis, the decibel levels at the eastern property line have not been detailed.
Reply: Please see Tab 23- Review Criteria. Attached within is the HFP noise model prediction
dated 4/30/07 for the Webster Hill Compressor Station. A schematic on page 7 of the report
notes that the phase 2 expansion of the station will maintain less than 65 dB(A) 350 feet from
the facility. The outline noted within this diagram as "Property Line" is incorrect. This is the
lease line. of the facility. The distance between the lease line and the W.F. Clough property line
is actually in excess of 1,000 feet in all directions.
Also attached within is the HFP noise model prediction dated 4/30/07 for the Rabbit Brush
Compressor Station. A schematic on page 7 of the report notes that the phase 2 expansion of the
station will maintain less than 65 dB(A) 350 feet from the facility. The outline noted within this
diagram as "Property Line" is incorrect. This is the lease line of the facility. The distance
MOUNTAIN CROSS ENGINEERING, INC.
Civil and Environmental Consulting and Design
826 V2 Grand Avenue, Glenwood Springs, CO 81601
P: 970.945.5544 F: 970.945.5558 www.mountaincross-eng.com
Bargath, Inc.
Page 4 of 4
June 6, 2007
between the lease line and the ExxonMobil property line is actually in excess of 500 feet in all
directions.
Feel free to call if any of the above needs clarification or if you have any questions or comments.
Sincerely,
Mountain Cross Engineering, Inc.
Chris Hale, PE
MOUNTAIN CROSS ENGINEERING, INC.
Civil and Environmental Consulting and Design
826 %z Grand Avenue, Glenwood Springs, CO 81601
P: 970.945.5544 F: 970.945.5558 www.mountaincross-eng.com
Jvne 06, 2007
Mr. Fred Jarman 1002
Garfield County Planning S 0rrt t r
108 8th Street, Suite 401
Glenwood Springs, CO 8160 1
MOUNTAIN CROSS
ENGINEERING, INC.
CIVIL AND ENVIRONMENTAL CONSULTING AND DESIGN
RE: Review of Pipeline Development Plan and Compressor Station for Bargath, Inc.
Dear Fred:
This office has performed a review of the documents provided for the Pipeline Development Plan
for Bargath, Inc. The submittal was found to be thorough and well organized. The following
comments, questions, or concerns were generated:
1. Pipeline crossings within the plan sheets state that crossings should happen at, "...low flow
period, if possible". The Nationwide Permit 12 requires that it happen at low flow. The
statement, "if possible" should be removed from the details.
2. The pipeline passes beneath an overhead power line between Sta. 107+71 and Sta. 109+72.
Issues with equipment and overhead clearance and power line appurtenances are not discussed.
The Applicant should coordinate with the power company to verify.
3. Whether or not any of the jurisdictional drainages also have mapped floodplains is not
discussed. Garfield County flood plain permits may be required.
4. Several roads will be inaccessible during construction of the pipeline crossings. It is not
discussed what roads will require access to be maintained and means of doing so.
5. A CDOT permit will be required.
6. It is not clear whether or not the Bureau of Land Management has the authority to give
approvals for construction on the lands of the United States Naval Oil Shale Reserve.
7. An agreement with the Bureau of Land Management has not been executed.
8. To mitigate building movement and settlement, the recommendations of the geotechnical
engineer are that the buildings be built on piers. The use planned for the buildings may not
allow movement and may be required to be built with pier foundations.
9. The application does not discuss whether or not sewer and water facilities will be necessary for
any employees.
10. The traffic impacts discuss construction traffic, which is temporary in nature. The application
should discuss the post construction traffic anticipated and the impacts that traffic will have on
the surrounding roads.
11. In the noise analysis, the decibel levels at the eastern property line have not been detailed.
Feel free to call if any of the above needs clarification or if you have any questions or comments.
Sincere]
.Vlounta
(
n Cross Enginerin Inc.
'Chris Hale, PE
826 1/2 Grand Avenue • Glenwood Springs, CO 81601
PH: 970.945.5544 • FAX: 970.945.5558 • www.mountaincross-eng.com
PVCMI
Land Planning Division
1038 County Road 323
Rifle, CO 81650
Ph. 970-625-5350
Fax 970-625-4522
Email: pvcm@hughes.net
Project: Cottonwood Compressor Station to Webster Hill 24" Gathering Line.
Submittal Item Tab 20- Listing of Adjacent Property Owners adjacent to or within
200 feet of the proposed right-of-way 9.07.05 (2).
The following is a list of landowners adjacent to or within 200' of the proposed right-of-
way for the Cottonwood Compressor Station to Webster Hill 24" Gathering Line.
Private landowners are identified by Assessor's Parcel Number and public lands are listed
by address. This information is accurate as of 4/30/07.
Garfield County planning staff has made a determination that only surface owners are to
be identified and notified regarding the proposed right-of-way.
Jl. Parcel #2407-061-00-139
Exxon Mobil Corporation
Attn. Exxon Co. U.S.A.
PO Box 53
Houston, TX 77001-0053
J 2. Parcel #2173-331-00-007
f3.
Mobil Oil Corp
Attn: Tax Dept.
PO Box 53
Houston, TX 77001
Parcel #2173-352-00-016
Puckett Land Company 60% & Tosco Corporation 40%
5460 Quebec St. Ste. 250
Greenwood Vlg, CO 80111-1917
Page 1 of 4
f4. US Highway 6&24/Interstate 70 Right -of -Way
c/o Colorado Department of Transportation
4201 E. Arkansas Avenue
Denver, CO 80222
J5. Parcel #2173-222-00-951
U.S. Naval Oil Shale Reserve
c/o US Department of Energy
Mr. Tom Pauling
2597 B % Road
Grand Junction, CO 81503
J6. Parcel #2173-253-00-035
Douglas A. & Beverly A. Teter
4949 County Road 309
Parachute, CO 81635-9109
J7. Parcel #2173-251-00-022
Harry L. & Rhonda K. Naugle
PO Box 829
Rifle, CO 81650-0829
18. Parcel #2175-082-00-953
U.S. Naval Oil Shale Reserve
c/o US Department of Energy
Mr. Tom Pauling
2597 B % Road
Grand Junction, CO 81503
J9. Parcel #2175-301-00-056
Todd Lee Peters
P.O. Box 2009
Rifle, CO 81650
J10. Parcel #2175-194-00-961
Bureau of Land Management
50629 Highway 6 &24
Glenwood Springs, CO 81601
Page 2 of 4
J11.Parcel #2175-211-00-022
W.F. Clough
P.O. Box 686
Rifle, CO 81650-0686
J12. Garfield County Road #246
c/o Garfield County Road & Bridge
P.O. Box 426
Rifle, CO 81650
J13.
Parcel #2175-202-00-962
Bureau of Land Management
50629 Highway 6 &24
Glenwood Springs, CO 81601
J14. Parcel #2175-201-00-187
Garfield County
108 8th St Ste 213
Glenwood Springs, CO 81601
J15. Parcel #2175-143-00-108
Rulison Gas Company, LLC
c/o Logan & Firmin Inc.
3615 S Huron St, Ste 200
Englewood, CO 80110
J16. Parcel #2175-281-00-023
W.F. Clough
PO Box 686
Rifle, CO 81650-0686
J17. Union Pacific Railroad Company
Property Tax
1400 Douglas, Stop 1640
Omaha, NE 68179-1640
Page 3 of 4
Please contact me with any questions.
Sincerely,
Philip B. Vaughan
President
PVCMI
Page 4 of 4
Project Information
Project #
Arch. Project #
Title
Address
Bargath, Inc. Cottonwood Compressor Station to Webster
Hill 24" Gathering Line
City, State, Zip Parachute/Rifle, CO
Country USA
From
Contact
Company
Address
City, State, Zip
Country
Phone
Fax
Philip Vaughan
Phil Vaughan Construction
Management, Inc.
1038 County Road 323
Rifle, CO 81650
USA
970-625-5350
970-625-4522
Transmittal
Transmittal
Transmittal #
Issue Date 5/4/07
Subject Submittal Copies
To
Contact
Company
Address
City, State, Zip
Country
Phone
Fax
Fred Jarman
Garfield County Building & Planning Dept.
108 8'h Street, 4th floor
Glenwood Springs, CO 81601
USA
970-945-8212
Copies and Remarks
Submit
Resubmit
Copies For Distribution
Copies For Approval
RECEIVED
MAY 0 4 2007
GARF it.LD COUNTY
BUILDING & PLANNING
Sender
Remarks
Fred,
Please find attached 8 copies of our Bargath, Inc. Cottonwood
Compressor Station to Webster Hill 24" Gathering Line.
As we discussed at our meeting with you on 1/17/07 we will do and
plan on the following:
1. Garfield County Planning office agreed that the determination
of completeness will be issued within 14 days of application
submission.
2. Upon determination of completeness from Garfield County,
we will mail a copy of the entire gathering line application to each
of the surface owners that Bargath, Inc. has agreements with for
the installation of this gathering line. Proof of delivery to each will
be provided to Garfield County.
3. As per our 11/7/07 meeting, prior to or on May 11, 2007, we
will post 2 signs noting the pending application.
1 sign to be located at U.S. Hwy. 6&24 at the Cottonwood
Compressor Station turn-off and one sign to be located on Anvil
Points road at the pipeline crossing.
We will also mail a notice to all property owners within 200 feet
of the right-of-way via certified mail.
5/4/07 Page 1 of 2
Transmittal Items
Return
Corrected Prints
Transmittal
4. Referral agencies have 18 days to reply to Garfield County
after the application is deemed complete by Garfield County.
5. Garfield County has 28 days to approve or conditionally
approve an individual pipeline development plan. Failure to
approve or conditionally approve in this timeline results in the
application being considered approved.
6. No permit will be issued for 14 days after this determination to
allow for a "Call up" by the Garfield County Commissioners if
they would have interest in holding a public meeting regarding
the application. 9.07.09
Please find attached a copy of the proposed sign to be posted
and a copy of the mailing notice to adjacent property owners for
your review and approval.
I would be happy to meet with Planning staff to review over the
application and to answer any questions.
Thanks again for your assistance.
Sincerely,
Phil Vaughan
Item Description Quantity Transmitted For
Bargath, Inc.- Cottonwood Compressor Station to Webster 8
Hill 24" Gathering Line- Development Plan Review for Right -
of -Way Application 2007
5/4/07
Action
Page 2 of 2
Project Information
Project #
Arch. Project #
Title
Address
Bargath, Inc. Cottonwood Compressor Station to Webster
Hill 24" Gathering Line
City, State, Zip Parachute/Rifle, CO
Country USA
From
Contact
Company
Address
City, State, Zip
Country
Phone
Fax
Philip Vaughan
Phil Vaughan Construction
Management, Inc.
1038 County Road 323
Rifle, CO 81650
USA
970-625-5350
970-625-4522
Transmittal
Transmittal
Transmittal #
Issue Date
Subject
5/9/07
Additional
Submittal Item
To
Contact
Company
Address
City, State, Zip
Country
Phone
Fax
Fred Jarman
Garfield County Building & Planning Dept.
108 8th Street, 4th floor
Glenwood Springs, CO 81601
USA
970-945-8212
Copies and Remarks
Submit
Resubmit
Return
Copies For Distribution Sender
Copies For Approval
Corrected Prints
Remarks
Fred,
Please find attached 8 copies of the fugitive dust permit for our
Bargath, Inc. Cottonwood Compressor Station to Webster Hill 24"
Gathering Line.
Please insert the attached item into Tab 7- Regulatory Permit
Requirements. This item is already noted within the introduction
matrix but was not included in the hard copy of the application
submitted to your office on 5/4/07.
Thanks again for your assistance.
Sincerely,
Phil Vaughan
5/11/07
Page 1 of 2
Transmittal Items
Transmittal
Item Description Quantity Transmitted For
Bargath, Inc: Cottonwood Compressor Station to Webster 8
Hill 24" Gathering Line- Tab 7 Additional Submittal
Action
5/11/07 Page2of2
STATE OF COLORADO
COLORADO DEPARTMENT OF PUBLIC HEALTH AND ENVIRONMENT
AIR POLLUTION CONTROL DIVISION
TELEPHONE: (303) 692-3150
CONSTRUCTION PERMIT
X9`'4
PERMIT NO: 07GA0179L
DATE ISSUED: April 16, 2007
•Li' h
ISSUED TO: WILLIAMS PRODUCTION RMT-cO
Y '>
\`, FINAL APPROVAL
THE SOURCE TO WHICH THIS PERMIT APPLIES IS DESCRIBED AND LOCATED AS FOLLOWS:
Land development project known as, Cottonwood 24" pipeline, located in Section 34, 6S, 95W,
Garfield County, Colorado.
THE SPECIFIC EQUIPMENT OR ACTIVITY SUBJECT TO THIS PERMIT INCLUDES THE FOLLOWING:
Overlot grading and associated construction activities.
THIS PERMIT IS GRANTED SUBJECT TO ALL RULES AND REGULATIONS OF THE COLORADO AIR
QUALITY CONTROL COMMISSION AND THE COLORADO AIR POLLUTION PREVENTION AND
CONTROL ACT C.R.S. (25-7-101 et seq), TO THOSE GENERAL TERMS AND CONDITIONS INCLUDED
IN THIS DOCUMENT AND THE FOLLOWING SPECIFIC TERMS AND CONDITIONS:
1. The fugitive particulate emission control measures listed on the attached page (as proposed in the
Fugitive Dust Control Plan submitted to the Division) shall be applied to the fugitive particulate emission
producing sources as required by Regulation No. 1.
2. This permit shall expire on 111112007.
By: ., By:6
Michae Harri , P.E. R K Hancock III, P.E.
Permit Engineer
AIRS ID: 046/0030/001
Unit Leader
Page 1 of 3
WILLIAMS PRODUCTION RMT CO
Permit No. 07GA0179L
Final Approval
Colorado Department of Public Health and Environment
Air Pollution Control Division
PARTICULATE EMISSIONS CONTROL PLAN
THE FOLLOWING PARTICULATE EMISSIONS CONTROL MEASURES SHALL BE USED FOR
ENFORCEMENT PURPOSES ON THE SOURCES COVERED BY THIS PERMIT, AS REQUIRED BY THE
AIR QUALITY CONTROL COMMISSION REGULATION NO 1. THIS SOURCE IS SUBJECT TO THE
FOLLOWING EMISSION GUIDELINES:
a. All Activities - Visible emissions not to exceed 20%, no off -property transport of visible emissions.
b. Haul Roads - No off -property transport of visible emissions shall apply to on-site haul roads, the nuisance
guidelines shall apply to off-site haul roads.
c. Haul Trucks - There shall be no off -property transport of visible emissions from haul trucks when
operating on the property of the owner or operator. There shall be no off -vehicle transport of visible
emissions from the material in the haul trucks when operating off of the property of the owner or operator.
Control Measures
1. All unpaved roads and other disturbed surface areas on site shall be watered as necessary to prevent
off -property transport of visible fugitive particulate emissions.
2. Vehicle speed on all unpaved roads and disturbed areas shall not exceed a maximum of 30 mph.
Speed limit signs shall be posted.
3. All disturbed surface areas shall be revegetated according to the information submitted by the applicant
with the permit application.
4. Surface area disturbed shall be minimized as described in the information submitted by the applicant
with the permit application.
5. Gravel entryways shall be utilized to prevent mud and dirt carryout onto paved surfaces. Any mud and
dirt carryout onto paved surfaces shall be cleaned up daily.
6. No earth work activities shall be performed when the wind speed exceeds 30 miles per hour.
AIRS ID: 046/0030/001 Page 2 of 3
WILLIAMS PRODUCTION RMT CO
Permit No. 07GA0179L
Final Approval
Colorado Department of Public Health and Environment
Air Pollution Control Division
GENERAL TERMS AND CONDITIONS: (IMPORTANT! READ ITEMS 5, 6, 7 AND 8)
This permit is issued in reliance upon the accuracy and completeness of information supplied by the applicant
and is conditioned upon conduct of the activity, or construction, installation and operation of the source, in
accordance with this information and with representations made by the applicant or applicant's agents. It is
valid only for the equipment and operations or activity specifically identified on the permit.
2. Unless specifically stated otherwise, the general and specific conditions contained in this permit have been
determined by the APCD to be necessary to assure compliance with the provisions of Section 25-7-114.5(7)(a),
C.R.S.
3. Each and every condition of this permit is a material part hereof and is not severable. Any challenge to or
appeal of, a condition hereof shall constitute a rejection of the entire permit and upon such occurrence, this
permit shall be deemed denied ab initio. This permit may be revoked at any time prior to final approval by the
Air Pollution Control Division (APCD) on grounds set forth in the Colorado Air Quality Control Act and
regulations of the Air Quality Control Commission (AQCC), including failure to meet any express term or
condition of the permit. If the Division denies a permit, conditions imposed upon a permit are contested by the
applicant, or the Division revokes a permit, the applicant or owner or operator of a source may request a
hearing before the AQCC for review of the Division's action.
4. This permit and any required attachments must be retained and made available for inspection upon request at
the location set forth herein. With respect to a portable source that is moved to a new location, a copy of the
Relocation Notice (required by law to be submitted to the APCD whenever a portable source is relocated)
should be attached to this permit. The permit may be reissued to a new owner by the APCD as provided in
AQCC Regulation No. 3, Part 8, Section II.B. upon a request for transfer of ownership and the submittal of a
revised APEN and the required fee.
5. Issuance (initial approval) of an emission permit does not provide "final" authority for this activity or operation of
this source. Final approval of the permit must be secured from the APCD in writing in accordance with the
provisions of 25-7-114.5(12)(a) C.R.S. and AQCC Regulation No. 3, Part 8, Section 111.0. Final approval cannot
be granted until the operation or activity commences and has been verified by the APCD as conforming in all
respects with the conditions of the permit. If the APCD,so determines, it will provide written documentation of
such final approval, which does constitute "final" authority to operate. Compliance with the permit conditions
must be demonstrated within 180 days after commencement of operation.
6. THIS PERMIT AUTOMATICALLY EXPIRES IF you (1) do not commence construction or operation within 18
months after either the date of issuance of this permit or the date on which such construction or activity was
scheduled to commence as set forth in the permit, whichever is later; (2) discontinue construction fora period of
18 months' or more; or (3) do not complete construction within a reasonable time ofthe estimated completion
date. Extensions of the expiration date may be granted by the APCD upon a showing of good cause by the
permittee prior to the expiration date.
7. YOU MUST notify the APCD at least thirty days (fifteen days for portable sources) prior to
commencement of the permitted operation or activity. Failure to do so is a violation of Section 25-7-
114.5(12)(a), C.R.S. and AQCC Regulation No. 3, Part B, Section IILG.1., and can result in the revocation of the
permit. You must demonstrate compliance with the permit conditions within 180 days after commencement of
operation as stated in condition 5.
8. Section 25-7-114.7(2)(a), C.R.S. requires that all sources required to file an Air Pollution Emission Notice
(APEN) must pay an annual fee to cover the costs of inspections and administration. If a source or activity is to
be discontinued, the owner must notify the Division in writing requesting a cancellation of the permit. Upon
notification, annual fee billing will terminate.
9. Violation of the terms of a permit or of the provisions of the Colorado Air Pollution Prevention and control Act or
the regulations of the AQCC may result in administrative, civil or criminal enforcement actions under Sections
25-7-115 (enforcement), -121 (injunctions), -122 (civil penalties), -122.1 (criminal penalties), C.R.S. •
AIRS ID: 046/0030/001 Page 3 of 3
February 22, 2007
Mr. Roland Hea
Colorado Department of Public Health and Environment
Air Pollution Control Division
Construction Permit Section
4300 Cherry Creek Drive South, APCD-SS-B1
Denver, Colorado 80246-1530
Re: Cottonwood 24" and Crawford 20" Pipelines
Fugitive Dust APEN and Control Plan Submittal
Dear Mr. Hea:
.P%:.-QQP_ tot 02-2.1,
CraAarl 2 o - I nJ. PI 4�«.
(�, —QIP. 200 oat.
Williams
EXPLORATION & PRODUCTION
Tower 3, Suite 1000
1515 Arapahoe Street
Denver, CO 80202
303/572-3900
303/629-8282 fax
Williams Production RMT Company (Williams) is submitting the attached land development Air
Pollution Emission Notices (APENs) and fugitive dust control plans as required by Colorado
Regulation 1. Williams is planning to install two segments of a .natural gas gathering pipeline
along the routes noted in the attached area map, all of which will be located in Garfield County.
There will not be any excavated material hauled away from the disturbed areas. The disturbed
area is estimated to be approximately 103 acres for the Cottonwood segment and 167 acres for
the Crawford Trail segment, which requires the submittal of the land development APEN and
fugitive dust control plan. The Cottonwood segment is proposed to begin on July 9, 2007 and is
estimated to be complete by September 28, 2007. The Crawford Trail segment is proposed to
begin on June 18, 2007 and is estimated to be complete by October 29, 2007. The contents of
the application are included in two appendices as outlined below:
Appendix
A
B
C
Description
Permit Application and Land Development APENs
Project Area Map
Project Specification Record
Williams requests that the Division invoice Williams for the APEN fees associated with this
project along with the application processing fees. As the technical contact for this project, I will
be available to answer any questions you may have regarding the information contained in this
submittal. Please feel free to contact me at the letterhead address above, directly by phone at
303.606.4366 or by email at rick.matar@williams.com.
Sincerely,
Wiles Production RMT Company
r
t I RC/t
Rick Matar
Air Quality Practice Leader
Enclosure
Appendix A
Permit Application Form
and
Land Development APENs
Air Pollution Control Division Construction Permit Application
PLEASE READ INSTRUCTIONS ON REVERSE SIDE.
1. Permit to be issued to: Williams Production RMT Company
2. Mailing Address: 1515 Arapahoe Street
Tower 3, Suite 1000
Denver, CO 80202
3. General Nature of Business: Exploration and Production of Natural Gas
SIC code (if known) 1311
4. Air Pollution Source Description: Construction equipment will prepare two pipeline routes prior to the installation of
(List permit numbers if existing source, the pipelines. The pipelines will be installed and disturbed area will be reclaimed.
attach additional pages if needed) Is this a Portable Unit? No
5. Source Location Address (Include Location Map) If portable, include the initial location and home base location
Please see attached site area map.
6. Reason for Application: (Check all that apply)
A/ New or Previously Unreported Source Administrative Permit Amendments
❑ Modification of Existing Source ❑ Transfer of Ownership (Complete Section 9 & 10 below)
• Request for Synthetic Minor Permit ❑ Company Name Change Section
(Complete 9 below)
❑ Other: ❑ Other:
7. Projected S Date:
Signatur of Legally Authorized Person of Company listed in Section 1 Date Signed
Rick Matar, Air Quality Practice Leader Phone: 303.606.4366
Type or Print Name and Official Title of Person Signing Above Fax: 303.629.8285
8. Check appropriate box if you want:
0 Copy of preliminary analysis conducted by Division
y To review a draft of the permit prior to issuance
These sections are to be completed only if a company name change or transfer of ownership has occurred.
9. Permit previously issued to:
10. Transfer of Ownership Information
Effective Date of Permit Transfer:
As responsible party for the emission source(s) listed above, I certify that the business associated with this source has been
sold, and agree to transfer the permit to said party.
Signature of Legally Authorized Person of Company listed in Section 9 Date Signed
Phone:
Type or Print Name and Official Title' of Person Signing Above Fax:
Mail completed application, APENs, and filing fee to:
Colorado Department of Public Health and Environment
Air Pollution Control Division
4300 Cherry Creek Drive South, APCD-SS-Bl
Denver, Colorado 80246-1530
httu://www.cduhe.state.co.us/ap/stationary.html
Phone: (303) 692-3150
Petr oc.A A,,...,cr 1(111
Colorado Department of Public Health and Environment Page 1 of 3
Air Pollution Control Division
- LAND DEVELOPMENT -
Air Pollutant Emission Notice (APEN) — and — Application for Construction Permit
® New Facility ❑ Transfer of Ownership * ❑ Change in Production ❑ No Change (APEN Update Only)
All sections of this APEN and application must be completed prior to submittal to the Division for both new and
existing facilities. An application with missing information may be determined incomplete and may result in
longer engineer processing times.
* Note: For transfer of ownership or company name change of a permit, you must also submit a Construction
Permit Application form.
Permit Number AIRS Number
Company Name:
Billing Address:
Person to Contact:
Email Address:
Williams Production RMT Company
1515 Arapahoe Street, Tower 3 Zip Code: 80202
Suite 1000
Denver, CO
Rick Matar Phone Number: 303.606.4366
rick.matar(2D,williams.com Fax Number: 303.629.8285
Please provide description of the activity: (Also, please provide a site map)
Construction activities to prepare area for pipeline installation. The project will consist of two pipeline segments
being constructed within near proximity to each other. See attached map for site details.
Project Name & Location: Cottonwood 24" Pipeline
(Begin) County: Garfield Section: 34 Township: 6S
(End) County: Garfield Section: 14 Township:
Total area of land in project:
103.3 Acres
Range: 95W
6S Range: 94W
Date earthmoving will — Commence: — 07/09/2007 Stop: — 09/28/2007
Total area subject to earthmoving:
Total disturbed area at any one time:
Area to be paved (roads, parking lots): 0
Date paving will be completed:
103.3
103.3
Estimated time to complete entire project (includes buildings)
List any known or suspected contaminates in the soil:
NA
Acres
Acres
Acres
— 3 months
Brief description of how the project development will occur (attach an additional page if necessary):
Construction equipment will prepare the pipeline route prior to the installation of the pipeline. The pipeline will
be installed and the disturbed area will be reclaimed as necessary.
Revised September 2004 http://www.cdphe.state.co.us/ap/stationary.html
Colorado Department of Public Health and Environment Page 2 of 3
Air Pollution Control Division
- LAND DEVELOPMENT -
FUGITIVE DUST CONTROL PLAN FOR LAND DEVELOPMENT
(This must be submitted with the Air Pollutant Emission Notice -and -Application for Emission Permit)
Regulation No. I requires that a fugitive dust control plan be submitted by applicants whose source / activity results in fugitive
dust emissions. The control plan must enable the source to minimize emissions of fugitive dust to a level that is technologically
feasible and economically reasonable. If the control plan is not adequate in minimizing emissions a revised control plan may be
required. The control plan (if acceptable to the Division) will.be used for enforcement purposes on the sources.
Please check the dust control measures which you propose for your activity. The Division will enforce the control measures
checked. Use separate sheets if more space is needed. Also note items with an asterisk (*). This indicates those measures which
will probably be required.
I. Control of Unpaved Roads on Site
® Watering
O Frequent (Watering Frequency of 2 or More Times Per Day)
® As Needed
❑ Application of Chemical Stabilizer
O Vehicle Speed Control
Speeds limited to 25 mph maximum. Speed limit signs must be posted.
(Generally 30 mph is maximum approvable speed on site.)
❑ Gravelling
II. Control of Disturbed Surface Areas on Site
El Watering
❑ Frequent (Watering Frequency of 2 or More Times Per Day)
❑ As Needed
❑ Application of Chemical Stabilizer
❑ Vehicle Speed Control
Speeds Limited To MPH Maximum. Speed Limit Signs Must Be Posted.
O Revegetation Revegetation Must Occur Within One Year Of Soil Disturbance
El Seeding with mulch
❑ Seeding without mulch
❑ Furrows at right angle to prevailing wind
Depth of furrows Inches (must be greater than 6")
❑ Compaction Of Disturbed Soil On A Daily Basis To Within 90 % Of Maximum Compaction
(As determined by a Proctor Test).
❑ Foundation areas only; or
❑ All disturbed soil.
❑ Wind Breaks
Type: (Example: Snow Fence, Silt Fence, etc.)
❑ Synthetic Or Natural Cover For Steep Slopes.
Type: (Netting, Mulching, etc.)
Revised September 2004 http://www.cdphe.state.co.us/ap/stationary.html
Colorado Department of Public Health and Environment
Air Pollution Control Division
- LAND DEVELOPMENT -
III. Prevention Of Mud And Dirt Carried Out Onto Paved Surfaces.
Prevention
O Gravel Entry Ways
O Washing Vehicle Wheels
O Other:
❑ Cleanup of Paved Areas Frequency: - Times Per Day
❑ Street Sweeper
❑ Hose With Water
❑ Other:
Additional Sources of Emissions
List any other sources of emissions or control methods
Non -road mobile sources as well as support vehicles. Dust emissions will mainly be controlled through speed control
and watering as needed for these sources.
Signature of Legally Authorized Person (not a vendor or consultant) Date
Rick Matar Air Quality Practice Leader
Name (please print) Title
•
Check the appropriate box if you want:
® Copy of the Preliminary Analysis conducted by the Division
® To review a draft of the permit prior to issuance
(Checking any of these boxes may result in au increased fee and/or processing time)
Send this form along with $119.96 to:
Telephone: (303) 692-3150
Small Business Assistance Program
(303) 692-3148
Small Business Ombudsman
(303) 692-2135
Colorado Department of Public Health and Environment
Air Pollution Control Division
APCD-SS-Bl
4300 Cherry Creek Drive South
Denver, CO 80246-1530
Revised September 2004 http://www.cdphestate.co.us/ap/stationary.html
Appendix B
Project Area Map
Appendix C
Project Specification Record
PROJECT NO. 61060.00 WILLIAMS PRODUCTION RMT
SPECIFICATION NO. AAZ-101 RABBIT BRUSH/WEBSTER IIILL/CRAWFORD TRAIL
SPECIFICATION NAME: SITE PREPARATION AND GARFIELD COUNTY. CO
EARTHWORK' '
. Issue status and revisions to this package are listed below. Each time the package is changed, after
the-itevisionB (For=Bid) issueonlythe Record Page • and new or revised -pages are issued.
Revision 0, (Conformed for Purchase) shall be issued in its entirety. The new or revised pages
form an integral part of the specification.
The Revision Description column gives a brief description of the issue status and changes.
The information "contained herein is the property of Harris Group Inc (Fiarris'Groil )' nd is
congfdered to be confidential and proprietary.:The recipient of this info tion shall not
reptdtluce this information or disclose Or reveal it to,a ootherparty without'Haris Group's written'
consent. ;All copies or reproductions made by recipient shall be logged and returned to Harris
Group with the information originally received, if requested. The package and accompanying
documents and drawing`s to which this Record Page is affixed is to be immediately returned to
Harts Group upon demand.
III. The original issue of this specification Was reviewed as noted by; the following initials: Revisions
to this s'pecificat on are issued under the noted approved authority.
Riw. NO.
DATE
"'•PREP.AREDT.'
AM'PROVED,137C.
Ail
Issued Foy Client Review
PROJECT NO. 61060.00 WILLIAMS PRODUCTION RMT
SPECIFICATION NO. AAZ-101 RABBIT BRUSH/WEBSTER HILL/CRAWFORD TRAIL
SPECIFICATION NAME: SITE PREPARATION AND GARFIELD COUNTY, CO
EARTHWORK
TABLE OF CONTENTS
1.0 GENERAL
2.0 MATERIALS
3.0 EXECUTION
(i:4n 61060Wocsbu-101-site prep & eanhwork\aaz- SECTION 2.0,11X
101.spc-reva.eoc)
9 -Feb -07
at
PROJECT NO. 61060.00 WILLIAMS PRODUCTION RMT
SPECIFICATION NO. AAZ-101 RABBIT BRUSH/WEBSTER HILL/CRAWFORD TRAIL
SPECIFICATION NAME: SITE PREPARATION AND GARFIELD COUNTY, CO
EARTHWORK
1.0 GENERAL
1.1 Summary
This Specification covers the supply of all labor, equipment, materials and
services necessary to perform the excavating, trenching, filling, embankment
construction, backfilling, compacting, grading, and related items necessary to
complete the work indicated or specified at the Rabbit Brush, Webster Hill and
Crawford Trail Compressor Stations.
1.1.2 Work covered by other Specifications include: Cast -in-place concrete, BAZ-101.
1.1.3 Definitions:
1.1.3.1 For Project Definitions, see the Project Description and Criteria.
1.1.3.2 Fill: Material placed above the elevation of the original (existing)
ground surface after stripping or above the bottom of excavation.
1.1.3.3 Borrow: Earth materials obtained from sources other than
excavations or stockpiles within the area to be graded by Contractor.
1.1.3.4 Clearing: The removal of trees, shrubs, and other vegetation above
the existing grade surface.
1.1.3.5 Dike: A berm that will be required to hold water.
1.1.3.6 Excavation: Material removed (cut) below the elevation of the
original (existing) ground surface.
1.1.3.7 Grubbing: The removal of roots, shrubs, and other vegetation to a
depth below the ground surface.
1.1.3.8 Stripping: Excavation of any overlying layer of material to expose
material of a different type, use or class.
1.1.3.9 Subgrade: The surface layer of earth on which structures, pavements,
railroads, or other surfacing materials, except topsoil, are to be
placed.
1.1.3.10 Topsoil: The final surface layer of earth material intended to support
vegetation.
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9 -Feb -07
1.2 Project Conditions
1.2.1 Data from the subsurface investigation report prepared by Geotechnical
Engineering Group, Inc. was used as the basis of design and is attached as
reference for the Contractor. Conditions are intended as representations and are
not intended as warranties of accuracy or continuity between soil borings.
Owner is not responsible for interpretations or conclusions drawn from this data
by the Contractor.
1.2.2 Lines and grades shall be as indicated. Owner will furnish benchmarks to permit
Contractor to lay out and construct the Work properly.
1.2.3 Carefully maintain all bench marks, monuments, and other reference points and
replace as directed by Owner if disturbed or destroyed.
1.2.4 Existing Utilities:
Locate existing underground utilities in areas of excavation work. If utilities are
indicated to remain in place, provide adequate means of support and protection
during earthwork operations.
1.2.4.1 Should uncharted or incorrectly charted piping or other utilities be
encountered during excavation, consult owner immediately for
directions. Cooperate with Owner and utilities companies in keeping
respective services and facilities in operation. Repair damaged
utilities to satisfaction of utility owner.
1.2.4.2 Do not interrupt existing utility service to facilities occupied by
Owner or others, except when permitted in writing by the Owner and
then only after acceptable temporary utility services have been
provided.
1.2.4.3 Provide a minimum of 48 -hours' notice to Owner, and receive written
notice to proceed before interruption of any utility.
1.2.4.4 Adequately protect from damage all active utilities and remove or
relocate only as indicated.
1.2.4.5 Report inactive and abandoned utilities encountered in excavating and
grading operations. Remove, plug, or cap as directed by the Owner.
1.2.5 Water for moisture conditioning of soil for compaction and roadway cleanup
shall be at Contractor's expense.
1.3 Submittals and Apjrovals
1.3.1 Test Reports
The Contractor shall submit the following test results to the Owner's
Representative.
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1.3.1.1 Test reports confirming that borrow material meets the requirements
of this Specification.
1.3.1.2 Soil replacement and compaction test reports confirming that
subgrade, backfill and fill under roadways and foundations meet the
requirements of this Specification.
1.3.2 When excavation, trenching, and shoring in compliance with local, state, or
federal safety regulations such as "OSHA Part 1926" or successor regulations,
require design by a registered professional engineer, submit copies of design
calculations and notes for sloping, benching, support systems, shield systems,
and other protective systems prepared by or under the supervision of a
professional engineer legally authorized to practice in the jurisdiction where the
Project is located.
1.3.3 Dewatering Plan and Sheeting and Shoring Excavation Plan.
1.3.4 Submit proposed erosion control products that meet requirements of these
Specifications.
1.3.5 Approvals
Owner will accept work as complete only after all materials have been properly
placed to the lines and grades indicated on the drawings and the independent
testing agency has confirmed all inspection and testing has met the requirement
of this Specification.
1.3.6 Deviations
Contractor shall describe in specific detail any deviation in his proposed scope of
supply from this Specification. The cost reduction associated with this deviation
shall also be given for each specific case.
1.4 Quality Assurance
1.4.1 Sampling and Testing:
1.4.1.1 Tests to determine conformance with all requirements of this
Specification for quality and properties of all Contractor -secured
materials, including borrow materials (both on or off -Site) proposed
for use, shall be performed by an independent, commercial laboratory
retained and compensated by the Contractor, and approved by the
Owner.
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1.4.1.2 Quality control testing shall be performed during construction by a
qualified independent testing laboratory retained and compensated by
the Contractor and approved by the Owner.
SECTION 2.0, PAGE 3 - 9 -Feb -07
ID
1.4.2 Applicable Standards:
American Society for Testing and Materials (ASTM, Equivalent AASHTO
Standards may be substituted as approved):
C88 - Test Method for Soundness of Aggregates by Use of Sodium
Sulfate or Magnesium Sulfate.
D698 - Test Method for Laboratory Compaction Characteristics of Soil
Using Standard Effort (12,400 ft-lbf/ft3).
D977 — Emulsified Asphalt
D1241 - Materials for Soil -Aggregate Subbase, Base, and Surface
Courses.
D2922 - Test Methods for Density of Soil and Soil -Aggregate in Place
by Nuclear Methods (Shallow Depth).
D3017 - Test Method for Moisture Content of Soil and Rock in Place by
Nuclear Methods (Shallow Depth).
D4253 - Test Method for Maximum Index Density and Unit Weight of
Soils Using a Vibratory Table.
D4254 - Test Method for Minimum Index Density and Unit Weight of
Soils and Calculation of Relative Density.
D4318 - Test Method for Liquid Limit, Plastic Limit, and Plasticity
Index of Soils.
D4546 - Test Methods for One -Dimensional Swell/Settlement Potential
of Cohesive Soils.
Occupational Safety and Health Administration (OSHA)
Part 1926 - Safety and Health Regulations for Construction.
U.S. Department of Interior, Bureau of Reclamation (USBR):
Earth Manual, 2nd Edition, Designation E-12, Relative Density of
Cohesionless Soils, Altemate Method.
Colorado Department of Transportation Standard Specifications.
1.4.3 Conflicting Requirements
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If there is a conflict between any of the requirements of this Specification and
OSHA or any other applicable statute, ordinance or code, then the requirement
which is most stringent or has governing jurisdiction shall apply. Contractor will
not be liable for factors over which he has no control. Any such conflicts shall
be brought to the Owner's attention.
SECTION 2.0, PAGE 4 9 -Feb -07
2.0 MATERIALS
2.1 Materials Encountered
2.1.1 Onsite materials suitable for use in embankment and fill include material that is
free of refuse, debris, roots, organic matter, frozen matter, and which is free of
rock or stone having any dimension greater than 2 inches or other material that
might prevent proper compaction or cause the completed fill or embankment to
have insufficient bearing capacity for the expected superimposed loads.
2.1.2 Materials unsuitable for use in embankment and fill are soils having insufficient
strength or stability as determined by soils engineer and include all material that
contains debris, roots, organic matter, frozen matter, gravel, stone, rock, or shale
particles (with any dimension greater than 2 inches or other materials that are
determined by the soils engineer as too wet or otherwise unsuitable for providing
a stable subgrade or stable foundation for structures.
2.2 Non -frost Susceptible Material
2.2.1 For non -frost susceptible material, provide structural fill modified to have less
than 5 percent (5%) passing a #200 sieve and a maximum size of 1".
2.3 Backfill Material
2.3.1 General backfill material shall be suitable on-site material as approved by the
geotechnical engineer and/or Structural fill (CDOT Class 5).
2.3.2 Structural fill (CDOT Class 5) shall be used where indicated on the drawings.
2.3.3 Material shall be free of roots or other organic matter, refuse, ashes, cinders,
frozen earth, or other unsuitable material as described previously.
2.3.4 Use suitable material sufficiently friable for embankment to provide a dense mass
free of voids and capable of satisfactory compaction.
2.3.5 Moisture content shall be that required to obtain specified' compaction of the soil.
Perform moisture curing by wetting or drying of the material as required to attain
required compaction criteria.
2.4 Low Permeable Material
Low permeable material shall be suitable on-site material as approved by the
geotechnical engineer.
2.5 Road Surfacing
2.5.1 Road base shall be Class 5, complying with CDOT Standard Specification for
construction.
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SECTION 10, PAGE 5 9 -Feb -07
2.6 Flowable Backfill
2.6.1 Flowable Backfill shall comply with CDOT Standard Specification for
Construction.
2.7 Granular Material
2.7.1 Crushed stone, gravel, or bedding material graded as follows:
3/4" — 100%
1/2" — 60-100%
No4-0-5%
2.8 Riprap Material
2.8.1 Course aggregate material graded as follows:
8" — 100%
6" — 35-80%
I" — 0-20%
2.9 Erosion Control Materials
2.9.1 Materials for erosion control shall meet the requirements of CDOT Standard
Specification for Construction.
2.10 Geotextile Fabric
2.10.1 Geotextile fabric shall be HP370 woven geotextile as manufactured by Mirafi, or
approved equal.
3.0 EXECUTION
3.1 Construction Survey
Contractor shall be responsible for all construction surveying required for all earthwork
operations and drainage structures. Horizontal and vertical control shall be based upon
project grid and benchmark, as shown on the plot plan and grading drawings.
3.2 Site Environmental Control
3.2.1 Environmental control shall comply with State of Colorado laws and local codes,
and requirements of agencies having jurisdiction.
3.2.2 Erosion and Sediment Control
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3.2.2.1 Temporary Erosion and Sediment Controls: Contractor shall furnish,
install, construct, and maintain temporary measures to control erosion
and minimize the siltation of intermittent streams and the pollution of
private properties. Temporary erosion and sediment control measures
shall be constructed in accordance with the drawings and in
compliance with local, state, federal, and jurisdictional agencies
SECTION 2.0, PAGE 6 9 -Feb -07
10
regulation and shall be maintained for the duration of the Project and
until such time as disturbed areas are stabilized, including successful
revegetated areas. Materials and installation shall be in accordance
with CDOT Standard Specifications for Construction.
3.2.2.2 Prior to beginning construction in a given area, all temporary erosion
and sediment control shall be in place for the area being disturbed.
3.2.2.3 Prior to commencing earthwork, install silt fence as indicated and on
the downslope side(s) of all disturbed areas,
3.2.2.4 Place sediment fence around the perimeter of soil stockpiles.
Sediment fence shall be placed perpendicular to runoff flow and
parallel to grade contours.
3.2.2.5 Silt fences shall be inspected within 24 hours after each rainfall event
or daily during periods of prolonged rainfall. Repair or replacement
shall be made immediately.
3.2.2.6 Sediment deposits shall be removed when deposits reach 0.5 times the
height of the fence.
3.2.2.7 During construction, drain inlets shall be protected against
sedimentation with acceptable barriers such as straw bales or filter
fabric.
3.2.3 Air Pollution Control
Contractor shall control airborne dust resulting from earthwork operation by
applying water or a dust control agent.
3.3 Site Preparation
3.3.1 Clearing, Grubbing, and Demolition:
3.3.1.1 Perform only in areas where earthwork or other construction
operations are to be performed.
3.3.1.2 Conduct work in a manner to prevent damage to property and to
provide for the safety of employees and others.
3.3.1.3 Protect tops, trunks, and roots of existing trees which are to remain on
the Jobsite.
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3.3.1.4 Remove all construction debris, rubbish, undergrowth and other
vegetation from Jobsite.
3.3.1.5 Remove trees and shrubs within the construction area. Remove tree
stumps and roots larger than 3 inches in diameter to a depth of at least
18 inches below existing grade elevation at all water containment
areas (dikes, ponds, and similar areas) and to a depth of at least 12
SECTION 2.0, PAGE 7 9 -Feb -07
inches below existing grade elevation at all other locations. Backfill
resulting excavations with approved material and grade to drain.
3.3.1.6 Remove existing construction to limits indicated or as required to
accommodate new construction.
3.3.2 Disposal of Debris:
3.3.2.1 Properly dispose and remove from Jobsite all debris from clearing
and grubbing. Contractor shall obtain all state and local permits
required for proper disposal.
3.3.2.2 Onsite open burning will not be permitted.
3.3.3 Disposal of Waste Materials:
3.3:3.1 . Waste Materials: Includes excess suitable materials, and materials
unsuitable for use in the Work.
3.3.3.2 Remove unsuitable materials from work area as excavated.
3.3.3.3 Keep excess suitable material segregated from unsuitable waste in the
disposal area for possible use by Others.
3.3.3.4 Properly dispose and remove from Jobsite all unsuitable materials.
Contractor shall obtain all state and local permits for proper disposal.
3.3.3.5 Deposit suitable materials in Owner -designated waste areas.
3.3.3.5.1 Spaced in lifts not exceeding 12 inches in thickness.
3.3.3.5.2 Compact by routing hauling and spreading equipment
uniformly over the surface of each lift.
3.3.3.5.3 Grade waste areas to leave them with an orderly
uniformly graded appearance and to be free draining.
Final slopes shall not be steeper than 2 horizontal to 1
vertical or as required for stability; nor shall final grades
be flatter than 1%.
3.3.3.6 Waste materials that include environmental pollutants, hazardous
substances, contaminated products, by-products, samples, or waste
materials of any kind that are regulated under environmental laws,
shall be handled and disposed of in the appropriate manner.
3.3.4 Stripping:
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3.3.4.1 Remove organic materials from all areas within the limits of the
construction area.
3.3.4.2 Scrape areas clean of all organic materials, such as brush, grass,
weeds, roots, and other material.
SECTION 2.0, PAGE 8 9 -Feb -07
ID
3.3.4.3 Strip to a sufficient depth (approximately 6 to 9 inches) to remove
excessive roots in heavy vegetation or brush areas and as required to
segregate topsoil.
3.3.4.4 Stockpile topsoil in areas to be determined by Owner. Stockpiled
topsoil shall be reasonably free of subsoil, debris, and stones larger
than 2 inches in diameter.
3.3.4.5 Dispose of waste as previously described.
3.4 Excavation and Trenching
3.4.1 General:
3.4.1.1 Excavate all materials found within the designated limits and to the
subgrade elevations indicated, regardless of material, character, and
obstruction encountered.
3.4.1.2 Perform excavation by any recognized method of good practice to
complete the Work in the most expeditious manner and in
conformance with specified requirements.
3.4.1.3 Take precautions to ensure no damage to existing facilities or
equipment, or other work.
3.4.1.4 Materials to be excavated are to be classified as:
3.4.1.4.1 Common excavation, which shall include the removal of
all materials other than rock.
3.4.1.4.2 Rock excavation which shall include igneous,
metamorphic, and sedimentary stone, hard sandstone,
hard shale or slate, and cemented conglomerates of the
above-mentioned materials encountered either in original
formations or as boulders larger than 14 cubic feet in
volume which cannot be removed by means other than
drilling and blasting or drilling and wedging.
3.4.2 Stability of Excavations
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3.4.2.1 Comply with OSHA and local codes, ordinances and requirements of
agencies having jurisdiction .
3.4.2.2 Contractor shall be responsible to design, furnish, place, maintain,
and subsequently remove, to the extent required, a system of
temporary supports for cut and cover, open cut, or trench excavations,
including bracing, dewatering, and associated items to support the
sides and ends of the excavations where excavation slopes might
endanger in-place or proposed improvements, extend beyond
construction right-of-ways, or as otherwise specified or indicated.
SEC1ION 2.0, PAGE 9 - 9 -Feb -07
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3.4.2.3 Contractor shall make his own assessment of existing conditions
including adjacent property, the possible effects of his proposed
temporary works and construction methods, and shall select and
design such support systems, methods, and details as will assure
safety to the public, adjacent property, and the completed Work.
3.4.2.4 Modify or relocate Underground Facilities, at no additional cost to
Owner, if existing Underground Facilities interfere with Contractor's
proposed method of support.
3.4.2.5 Employ caution in the areas of Underground Facilities, which shall be
exposed by hand or other excavation methods acceptable to Owner.
3.4.2.6 Perform sheeting, shoring, and bracing for trench excavation,
Underground Facilities, and for other purposes in accordance with the
safety and protection requirements.
3.4.2.7 Provide shoring, sheeting, and bracing as indicated or as needed to
meet the following requirements:
3.4.2.7.1 Prevent undermining and damage to all structures,
buildings, Underground Facilities, pavements, and slabs.
3.4.2.7.2 Design excavation support system and components to
support lateral earth pressures, unrelieved hydrostatic
pressures, utility loads, traffic and construction loads,
and building and other surcharge loads to allow the safe
and expeditious construction of the permanent structures
without movement or settlement of the ground, and to
prevent damage to or movement of adjacent buildings,
structures, Underground Facilities, and other
improvements. The design shall account for staged
removal of bracing to suit the sequence of concrete
placement for permanent structures and backfill.
3.4.2.7.3 Except as otherwise specified herein, shoring and
sheeting materials may be extracted and reused at
Contractor's option; however, Contractor shall remove
and replace any existing structure or Underground
Facility damaged during shoring and sheeting. Remove
sheeting and bracing as backfill progresses. Fill voids
left after withdrawal with sand or other approved
material.
SECI10N2.0, PAGE 10 - 9. -Feb -07
3.4.3 Trenching for Underground Utilities:
3.4.3.1 Side Walls:
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3.4.3.1.1 Make vertical or sloped within specified trench width
limitations below a plane 12 inches above topof pipe.
3.4.3.1.2 Make vertical or sloped (stepped) as required for
stability, above a plane 12 inches above top of pipe.
3.4.3.1.3 Excavate without undercutting.
3.4.3.2 Trench Depth:
3.4.3.2.1 Excavate to depth sufficient to provide the minimum
bedding requirements for the pipe being placed.
3.4.3.2.2 Do not exceed that indicated where conditions of bottom
are satisfactory.
3.4.3.3
3.4.3.2.3 Increase depth as necessary to remove unsuitable
supporting materials.
Trench Bottom:
3.4.3.3.1 Protect and maintain when suitable natural materials are
encountered.
3.4.3.3.2 Remove rock fragments and materials disturbed during
excavation or raveled from trench walls.
3.4.3.3.3 Restore to proper subgrade with trench stabilization
material when overexcavated.
3.4.3.4 Trench Width:
3.4.3.4.1 Excavate trench to a width which will permit satisfactory
jointing of the pipe and thorough tamping of bedding.
3.4.3.4.2 For single pipe installation maintain trench widths below
a plane 12 inches above top of pipe as follows:
SECRON 2.0, PAGE 11 - 9 -Feb -07
10
Trench Width
Nominal Minimum Maximum
Pipe Size
Less than Pipe OD + Pipe OD +
24" 1' 2'
24" to 60" Pipe OD + Pipe OD +
2' 4'
3.4.4.4.3 For multiple pipe installations, maintain trench widths
below a plane 12 inches above top of largest pipe as
follows:
Trench Clearances/Width
Nominal Minimum Maximum
Pipe Size From From
Outside Outside
Pipe Pipe
Less than 6" 12"
24"
24" to 60"
12" 24"
a. Above plane defined in b. and c., no maximum
limit.
b. Maximum trench width limitations shall apply in
all areas more than 3 feet from manhole or
structure walls.
c. Maximum width shall be as near the minimum
specified as can be controlled by construction
equipment and methods used.
3.4.4.5 Fill and Embanlanent Areas. Perform trenching only after compacted
fill or embanlanents have reached an elevation of not less than 1 foot
above the top of the pipe.
3.4.5 Dewatering:
3.4.5.1 Prevent surface water and subsurface or groundwater from flowing
into excavations and from flooding project site and surrounding area.
3.4.5.2 Do not allow water to accumulate in excavations. Remove water to
preserve the strength of foundation soils, to prevent softening of
foundation bottoms, undercutting footings, the instability or raveling
of excavation slopes, soil changes detrimental to stability of
subgrades, foundations and existing structures. Provide and maintain
pumps, well points, sumps, suction and discharge lines, and other
dewatering system components necessary to convey water away from
excavations.
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SECTION 24 PAGE 12 9 -Feb -07
3.4.5.3 Establish and maintain temporary drainage ditches and other
diversions outside excavation limits to convey rainwater and water
removed from excavations to collecting or runoff areas. Do not use
trench excavations as temporary drainage ditches.
3.4.5.4 Damages:
3.4.5.4.1 Contractor shall be responsible for and shall repair
without cost to Owner any damage to work in place,
other contractor's equipment, utilities, roads and adjacent
structures.
3.4.5.4.2 Contractor shall remove subgrade materials rendered
unsuitable by excessive wetting and replace with
approved backfill material.
3.5 Earthwork
3.5.1 Fill
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3.5.1.1 General:
3.5.1.1.1
The construction of "fill" shall consist of obtaining
suitable materials and placing these materials in
compacted lifts.
3.5.1.1.2 Construct fill to the subgrade contours and elevations
indicated, using approved equipment and suitable
approved materials specified above. Obtain materials
for fill construction in the following order of priority:
a. From on-site excavation.
b. From on-site stockpiles.
c. From off-site borrow areas secured by Contractor.
3.5.1.1.3 If the slope bounding the fill area is steeper than six
horizontal to one vertical, step or serrate -prior to placing
the material.
3.5.1.1.4 Do not place snow, ice, or frozen earth in fill and do not
place fill on a frozen surface, unless approved by the
Engineer.
3.5.1.1.5 Place fill material only on ground surfaces which
conforms to the following:
a. Scarified and compacted prior to placement of
first lift.
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b. Compacted prior to placement of second or
succeeding lifts.
c. Sufficiently stable to permit the fill to be
compacted.
3.5.1.2 Backfill Placement
3.5.1.2.1 Useable on-site fill material placed beneath footings,
mats, slabs and road base shall be compacted in
accordance with ASTM D698 to a minimum of 95% of
maximum dry density with a moisture content 2 to 4%
over optimum.
All other on-site fill material shall be compacted in
accordance with ASTM D698 to a minimum of 90% of
maximum dry density with a moisture content 2 to 4%
over optimum.
3.5.1.2.2 Structural fill material placed beneath footings, mats,
slabs and road base shall be compacted in accordance
with ASTM D698 to a minimum of 95% of maximum
dry density at optimum moisture content.
All other Structural fill material shall be compacted in
accordance with ASTM D698 to a minimum of 90% of
maximum dry density at optimum moisture content.
3.5.1.2.3 Road base material shall be compacted in accordance
with ASTM D698 to a minimum of 95% of maximum
dry density at optimum moisture content.
3.5.1.2.4 Low permeable material shall be compacted in
accordance with ASTM D698 to a minimum of 95% of
maximum dry density with a moisture content 2 to 4%
over optimum.
3.5.1.2.5 Place backfill and fill materials in layers not more than
8" in loose depth for material compacted by heavy
compaction equipment, and not more than 4" in loose
depth for material compacted by hand -tampers.
3.5.1.2.6 Perform any wetting or drying of the material as
required to obtain the specified density when compacted
and to maintain specified moisture content range at the
time of placement. Before compaction, uniformly apply
water to surface of subgrade or layer of soil material.
Apply water in minimum quantity as necessary to
SECTION 2.0, PAGE 14 9.Feb-01
10
prevent free water from appearing on surface during or
subsequent to compaction operations.
3.5.1.2.7 Remove and replace, or scarify and air dry soil material
that is too wet to permit compaction to specified density.
3.5.1.2.8 Stockpile or spread soil material that has been removed
because it is too wet to permit compaction. Assist
drying by discing, harrowing or pulverizing until
moisture content is reduced to a satisfactory value.
3.5.1.3 Borrow
3.5.1.3.1
Borrow, if required, to bring fill areas to the lines and
grades indicated, shall be furnished by Contractor, as
specified, at no additional cost to Owner.
3.5.1.3.2 Borrow areas shall be:
a. Arranged for by Contractor at no additional cost
to Owner.
b. Subject to approval by Owner and geotechnical
consultant.
3.5.1.3.3 Prior to incorporating borrow materials into the Project,
borrow material from each source shall be tested for
compliance with this Specification by an independent
laboratory compensated by Contractor. Contractor shall
submit copies of test results to Owner.
3.5.2 Compaction
3.5.2.1 General:
3.5.2.1.1
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Excavate or backfill as required to construct subgrades
to the elevations and grades indicated.
3.5.2.1.2 Remove all unsuitable material and replace with
acceptable fill material and perform all wetting, drying,
shaping and compacting required to prepare subgrade.
3.5.2.1.3 Exposed area to receive fill, backfill, or embankment
shall be proof -rolled to detect localized zones of
excessively wet, unstable, organic, or low bearing
capacity materials.
SECTION 2.0, PAGE 15 - 9 -Feb -07
3.5.2.2 Equipment
3.5.2.2.1 Compaction equipment shall be appropriate for the soil
materials and area being compacted. Maintain all
equipment in good repair.
3.5.2.3 Subgrade for Fills and Embankments:
3.5.2.3.1 Roughen by discing or scarifying and wet or dry top 9
inches, as required, to bond with fill or embankment.
3.5.3 Site Grading:
3.5.3.1 Excavate, fill, compact fill, and rough grade to bring Project area
outside buildings to subgrades as follows:
3.5.3.1.1 For surfaced areas, to underside of respective surfacing
or base course.
3.5.3.1.2 For planted areas, to a minimum of 6 inches below
finished grade.
3.5.4 Rough Grading:
3.5.4.1 Grade and compact all areas within the Project area, including
excavated and filled sections and adjacent transition areas, reasonably
smooth, and free from irregular surface changes.
3.5.4.2 Rough grades shall generally be not more than 0.1 foot above or 0.25
foot below those indicated.
3.5.5 Final Grading
3.5.5.1 Uniformly grade within project limits and transition to adjacent areas.
Smooth finished surface within specified tolerances. Provide smooth
transition between elevations indicated on plans.
3.5.5.1.1 Grading Outside Building Lines
Grade areas adjacent to building lines to drain away
from structures and to prevent ponding. Slope surface a
minimum of 5% for the first 10 feet away from buildings
and structures.
3.5.5.1.2 Final Grading Surface
Grade smooth and even, free of voids, compacted as
specified and to required elevation, with the following
tolerance:
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SECTION 2.0, PAGE 16 - 9 -Feb -07
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a) Tolerance for areas within 10 feet of building
shall not exceed 0.15 foot above or below
established subgrade.
b) Finished subgrade for roads, drives, and surfaced
areas shall not be lower than indicated or higher
than 0.1 foot above that indicated.
c) Finish all ditches, swales, and gutters to drain
readily.
d) Provide roundings at top and bottom of banks and
at other breaks in grade.
3.5.5.1.3 Final grades for roadways, drives, and parking areas
shall have a maximum deviation of not more than 1/2
inch in any 10 feet when tested with a 10 -foot
straightedge applied parallel with and at right angles to
the centerlines of subgrade areas.
3.5.5.1.4 Compaction
After grading, compact surfaces to the depth and
indicated percentage of maximum or relative density for
each area classification required.
3.5.6 Pipe Trench Embedment:
3.5.6.1 Pipe bedding shall use granular material as indicated on the plans.
3.5.6.2 Compact granular embedment in lifts not exceeding 12 inches in
compacted depth.
3.5.6.3 Above bedding, use suitable fill material up to sub -grade elevations as
described in "Fill Placement" section.
3.5.6.4 Backfill trenches simultaneously on both sides of pipe using hand
methods to a plane 12 inches above top of pipe.
3.5.7 Construction Runoff Control:
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3.5.7.1 Construct runoff control facilities at locations indicated on drawings
and/or this Specification.
3.5.7.2 If, during construction, Contractor alters the flow characteristics of
construction runoff such that untreated runoff is being released or the
runoff exceeds the capacity. of any of the control facilities designed
by Engineer, Contractor shall upgrade existing facilities and/or
provide new facilities designed to control construction runoff.
3.5.7.3 All upgraded or new runoff control: facilities shall be approved by
Owner's representative before implementation.
SECTION 2.0, PAGE 17 - - 9 -Feb -07
3.5.7.4 Construct silt fences at locations indicated on SWMP prepared by
Owner.
3.5.8 Topsoiling:
3.5.8.1 Topsoil Materials:
3.5.8.1.1 Shall be material excavated from within the upper 1 foot,
of on -Site excavations as directed by the Owner.
3.5.8.1.2 Contractor may furnish topsoil from off-Jobsite borrow
areas at his option and without additional cost. Off-
jobsite topsoil borrow shall be of equivalent quality and
characteristics as on-site topsoil.
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3.5.8.2 Placement:
3.5.8.2.1 Clear areas free of vegetation, rock, and other materials
that would interfere with grading and tillage operations.
3.5.8.2.2 Bond topsoil to the subgrade by scarifying the subgrade
to a depth of 2 inches.
3.5.8.2.3 Spread topsoil to a minimum depth of six (6) inches.
3.5.8.2.4 Distribute over required areas without compaction other
than that obtained with spreading equipment.
3.5.8.2.5 Grade topsoil to bring areas to grades as indicated and to
ensure that all surfaces are left in an even and properly
compacted condition and to prevent ponding of water in
depressions.
3.5.8.3 Cleanup:
3.5.8.3.1
Clean surface free of all stones or other objects larger
than 2 inches in least dimension, all roots, brush, wire,
grading stakes, and other objectionable materials.
3.5.8.3.2 Protect topsoiled areas from the elements until grass is
established: Repair eroded areas as required.
3.5.8.3.3 Keep paved areas clean and promptly remove rock and
dirt dropped upon surfacing.
SECTION 2.0, PAGE 18 9 -Feb -07
11
3.5.9 Field Quality Control
3.5.9.1 Compaction:
3.5.9.2 Contractor shall, through services of an Owner approved independent
laboratory, test all embankments, fills, and subgrades under this
Contract to determine conformance with specified density
relationships.
3.5.9.3 The method of in-place compaction testing including density and
moisture content shall be as follows:
3.5.9.3.1 Density — Cohesive materials: ASTM D2922.
3.5.9.3.2 Density — Cohesionless materials: ASTM D2922.
3.5.9.3.3 Moisture Content — ASTM D3017.
3.5.9.4 The minimum frequency of in-place compaction testing including
density and moisture content will be as follows:
3.5.9.4.1 At least one test for every 2,000 cubic yards of material
placed in a mass fill.
3.5.9.4.2 At least one test for every 200 cubic yards of fill placed
in trenches or surrounding structures.
3.5.9.4.3 At least one test for every shift of compaction operations
on a mass fill.
3.5.9.4.4 At least one test every 100 feet per lift along a roadway.
3.5.9.4.5 At least one test for every 2,500 square feet where
subgrade preparation for roadways, railroads, drives, and
parking areas is performed.
3.5.9.4.6 At least one test when Owner suspects the quality of
moisture control or effectiveness of compaction.
3.5.9.5 Fill failing to meet required densities shall be removed or scarified
and recompacted as necessary to achieve specified results.
3.5.9.6 Removal of in-place material and. replacement with approved new
material will be required if scarifying and recompaction do not
produce the required densities.
3.5.10 Subgrades:
3.5.10.1
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Owner will inspect all subgrades and fmish grades to determine
conformance with indicated lines and grades.
SECTION 2.0, PAGE 19
9 -Feb -07
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