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Home My WebLink AboutFlood Plain Review Correspondencenaalfhrh K"//'eu) Colleen Wirth From: Sent: To: Cc: Subject: Attachments: Glenn Hartmann Monday, August 5,2024 2:57 PM Colleen Wirth jim@jgbsinc.com; Juliann Gornick FW:240 Rippy Lane 4012_001.pdf Hi Coll.een: This email is provided to address the fl,oodptain reference to FEMA Zone A on the Finhotm site ptan tor 240 Rippy Ln. The purpose of Staff's request for additional information was to confirm that the Appticant's site is not located within the 100-year fl.oodptain for the Cotorado River. As FEMA has not pubLished mapping for this area, Staff provided the Appl,icant with the best avaitabte information for the property in the form of Army Corp, of Engineer's Mapping competed in 1982 and 1987 (Panets C-18 & C- 19 see attached). Staff atso requested the Appticant provide additionaI surveyor confirmation on the etevation of the Appticant's buitding site. The fotl,owing reftects staff's review: The Army Corp. mapping provided graphic depiction of the 100-year ftoodptain to not inctude the generaI area of previousty existing and proposed new structures. The Army Corp. mapping inctuded surveyed elevations on the site and cross section etevations for the 100-year ftoodplain (5498 ft. & 5496 at the site) which indicate that the proposed buitding site is more than 1 ft. above the 1OO-year fl.oodptain. Jason Neat (Peak Surveying lnc.) provided the attached review of topographic information and etevations for the site, making the determination/representation that the buitding site is at an etevation of "around" 5510 ft. This etevation is wetl above the Army Corp. mapping 100-year fl,ood ptain cross sections. Based on the above, no additional information on fl.oodptain is required and no ftoodpl.ain devetopment permit needed based on a [ocation outside of and above the 100-year ftoodptain. Based on proximity to the river and the character of the riverbank, it is recommended that the property owner ful,l,y compty with the 35 ft. waterbody setback and give carefuI consideration to maintaining bank stabitization and minimizing the potential, for soit/bank erosion. Please contact me if you have any questions or need additionat information. Thanks. Gtenn Gtenn Hartmann Community Devetopment Di rector 970-945-1377 x1570 gha rtman n @ga rf ietd. co u nty. com From: Jason Neil <jason@pea ksu rveyinginc.com> Sent: Thursday, August L,2024 1:51 PM To: G lenn Hartman n <gha rtma nn @ga rfield-county.com> $ N s\ss N 1 Cc: jim @jgbsinc.com; julia nn @jgbsinc.com Subject: 240 Rippy Lane Hi Glenn, I have reviewed the sulVey prepared by Meridian Design (Kurt Olson) which shows topography at an assumed elevation of 2OO at the barn slab. Topography yields a general elevation of 181' at a point on the high water mark perpendicular to the proposed building site. The lowest adjacent grade of the proposed building site appears to be near the 198' contour while the highest adjacent grade is just over the 200' contour with a FF Elev of 20 1'. It appears there is right around L7'of. vertical above tJle high water mark and the proposed lowest adjacent grade. Thanks for the 1982 FEMA maps, that is great info. It appear thatZone X extents in that area are somewhere in between the historic building and the high water mark with zone AE being further toward the river. As I said we do not have actual elevation onsite but it appears that the cross section 5496'is horizontally close to the proposed building site. I believe this to be a L929 datum with the proposed building site being somewhere around 5510't. This is just based on some preliminary review and not actual field data. Let me know if you have any qr,restions at all. Thanks, Jason R. Neil, PLS Peak Surveying, Inc. PO Box 1746 110 E.3rd Street, Suite 210 Rifle, CO 81650 Phone: 97O-625-L954 Fax: 970-579-715O Cell: 970-987-1382 i ason@peaksurveyineinc. com Rifle, CO 81650 Phone (970') 625-1954 fa,r (970) 579-7150 P.O. Box 1746 2 nhholm Colleen Wirth From: Sent: To: Cc: Subject: Juliann Gornick <juliann@jgbsinc.com> Friday, August 2,2024 9:28 AM Colleen Wirth; Glenn Hartmann Jim Gornick; Ruby Cruz FW: 240 Rippy Lane Cotteen & Gtenn See the etevation ctarification from the surveyor below. This shoutd comptete your elevation request. Please advise finat permit approval and next steps to proceed. Att the Best- Jutiann Gornick-Boucher Corporate Secretary/Accou nting (970) 945-0150, Ext 1- Phone (970) 930-6073- Direct Line (970) 618-2008- Cett Phone (970)945-0151- Fax JVE2rq@@ From: Jason Neil <jason @ pea ksurveyinginc.com> Sent: Thursday, August L,2024 1:51 PM To: Glen n Ha rtma nn <gha rtmann@ga rfield-county.com> Cc: Jim Gornick <jim@jgbsinc.com>; Juliann Gornick <juliann@jgbsinc.com> Subject: 240 Rippy Lane Hi Glenn, I have reviewed the survey prepared by Meridian Design (Kurt Olson) which shows topography at an assumed elevation of 200 at the barn s1ab. Topography yields a general elevation of 181'at a point on the high water mark perpendicular to the proposed building site. The lowest adjacent grade of the proposed building site appears to be near the 198' contour while the highest adjacent grade is just over the 2OO'contour with a FF Elev of 2O1'. It appears there is right around 17'of.vertical above the high water mark and the proposed lowest adjacent grade. Thanks for the 1982 FEMA maps, that is great info. It appea-r lhatZone X extents in that area are somewhere in between the historic building and the high water mark with zone AE being further toward the river. As I said we do not have actual elevation onsite but it appears that the cross section 5496'is horizontally close to the proposed building site. I believe this to be a 1929 datum with the proposed building site being somewhere around 5510't. This is just based on some preliminary review and not actual field data. 1 ffih -lr,l I:;.r{{{*i r,irqknow f you have any questionsLet me Thanks, Jason R. Neil, PLS Peak Surveying, Inc. PO Box 1746 110 E.3rd Street, Suite 210 Rifle, CO 81650 Phone: 970-625-1954 Fax: 970-579-7LSO Cell: 970-987-L382 i ason@neaksurvevineinc. com www. peaksurvevineinc. com at all. Rifle, CO 81650 Phone (970)625-195/ Fax (970) 579-7tso P.O. Box 1746 ,l I I I 2 Colleen Wirth From: Sent: To: Subject: Glenn Hartmann Thursday, August 1,2024 12:10 PM Colleen Wirth Floodplain References on Finholm Site Plan Hi Co[[een: Thanks for conveying our questions to the Appticant regarding the Ftood Zone References on the Finhotm Site Ptan. We have been informed of their chattenges in documenting a FEMA Adopted Map for their site. As a resutt we've consutted the best avail,abte mapping which is the 1982 Cotorado River and Tributaries Fl,ood PLain Study conducted bythe Army Corps of Engineers (dated 12182and7/87). These maps show the portion of the site proposed for devetopment to be between 4 ft. and 20 ft. above the mapped 100 year-ftood etevations of 5496 and 5498. I wil,t provide copies of the retevant panets from the study (C-18 & C-19) for your files and to the Appl.icant. To futty address this issue, ptease have the Appticant provide an etevation of the buitding footprint from their surveyor adjusted to the proper datum from the 1982187 study to confirm the location outside and above the 100-year ftoodptain. Ptease contact me with any fottow-up questions. Thanks. Gtenn Gtenn Hartmann, Ftoodplain Manger CFM Community Devetopment Director 970-945-1377 x1570 gha rtma n n@ga rfietd.cou nty.com 1 Colleen Wirth From: Sent: To: Cc: Subject: Attachments: Glenn Hartmann Thursday, August 1, 2024 12:29 PM Juliann Gornick; Colleen Wirth Jim Gornick; Ruby Cruz RE: Flood Maps- BLRE-06-24-8742 - 240 Rippy Ln - FLOODPLAIN MANAGER COMMENTS 3962_001.pdf HiJul,iann: Per our conversation a few minutes ago and my conversation with Jim yesterday, I'm attaching the key panets from the 1982 Cotorado River Fl,ood Pl,ain Study that was done by the Army Corp in 1982 & 1987. lt is our best availabte mapping and utitized for nearby subdivisions (as discussed with Jim yesterday). lt shows cross section elevations for the 100- year ftoodptain adjacent to your site. lt appears that the devetopabte portion of your site is above the 100-year fl,oodpl,ain however it is in rel,ativety ctose proximity. To best resotve the question, ptease have your surveyor shoot an etevation for the footprint of your proposed buil,ding (adjusted as necess ary for the datum used for the 1 982 fl.oodplain study) to confirm your location above and outside the 100-year ftoodptain. Thanks for providing the research information from Jason Nea[ and ptease feel free to have him give me a catt if he has any questions regarding confirming the etevation. Perhaps he atready has shot an etevation. Thanks very much for your attention to this tast detait. Ptease catl with any questions. Thanks again. Glenn Gtenn Hartmann, Ftoodptain Manager CFM Community Devel,opment Director 970-945-1377 x1570 gha rtma n n @ga rf ietd.cou nty.com From: Juliann Gornick <juliann@jgbsinc.com> Sent: Wednesday, July 3L, 20241I:25 AM To: Glenn Hartmann <ghartmann@garfield-county.com>; Colleen Wirth <cwirth@garfield-county.com> Cc: Jim Gornick <jim@jgbsinc.com>; Ruby Cruz <rubyc@stillwaterdwellings.com> Subject: FW: Flood Maps- BLRE-06-24-8742 - 240 Rippy Ln - FLOODPLAIN MANAGER COMMENTS Glenn- Per our surveyor, Jason Neil, Peak Surveying, please see screenshots below re: FEMA Ftood Maps. As you mentioned, there are no avaitabte Ftood Ptain Maps for this site. The 2"d screenshot, Plat Notes, is for the subdivision across f rom this project. They too, do not reference a FEMA Map, Ftood Line or Pane[ but instead reference the maximum water [eve[ per the Colorado Water Conservation Board. As a reminder, we are demotishing the existing structure and re-buitding in the same location on the [ot. Ptease review and advise. 1 Att the Best- Jutiann Gornick-Boucher Corporate Secretary/Accou nting (970) 945-0150, Ext 1- Phone (970) 930-6073- Direct Line (970) 618-2008- Cett Phone (970) 945-01 51 - Fax J|'5'AmslgEnffimrf,ra From: Juliann Gornick <iuliann@gornickbusiness.com> Sent: Wednesday, July 31, 20241.I:01, AM To: Juliann Gornick <iuliann@igbsinc.com> Subject: Flood Maps ffih 2 ) tll {r lil NFHL kintToo[ B li Ot"p, There is na flood map printed forthe selected locat view or download the FIRM Panef lndex for more inJ The lndex ean be found by selecting the following li http:l/msc.fema.gov/l/avail ilihdsearch? addcornmu n :08 m n a fi and expanding the Effective FIRM Products list. 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JUL 1981 ...-/... E l ,4l4,OOO E tj415,OOO 6 EASIS OF HORIZONTAL CONTROL: THE COLO]AOO STATE PLANE COOROINATE SYSTI,M, CENIRAL ZONE, LAMSERT CONFORMA coN|c PRoJ€cIIoN. THE FoLLowING {USC A C ANO/OR USGS) TRIANGULATION STATIONS WERE USED: BASIS OF VERTICAL CONTROL. USC A GS 5EA LEVEL OATUM EASEO ON IHE FOLLOWING BENCHMARKS . CROSS S€CTION POLE FENCE IREE BRUSH o. SCRUS FoUNOATlON o. RUINS SECTION LINE FOUNO SECTION CORNER UNFOUNO S€CTION CORNER APPROX. SECTION LINE COMPILATION 8Y PHOTOGRAMI/ETRIC METHOOS FROM 6" C,FL. VERTICAL AERIAL PHOTOCRAPHY rAKEN NOV '5,r6,8r7, t982 IHIS MAP COMPLIES WITH NATIONAL MAP ACCURACY SIANDAROS PRTPAREO 8Y: ANALYTICAL SURVEYSI INC' 4167 SINTON ROAD coloRA00 sPRrNGs, c0. 80907 303 - 593-OO93 CONIOUR INTEFVAL- 2 F€ET 2nd 2nd GRID POINI - _t,rt GNAT ORDER IN 400 3rd A o X a\2? LEG END HORIZ. CONTROL V€RTICAL CONTROL SENCHMARK PHOTO CENTER NAME ORO€R CATHERINE zrd COOROJNATES x ' r,516,508.42 Y:58r,255.78 x: 1,231,566.60 Y= 523,643.1O ELEVATION 6r92.284 4869.860 NAME D -r56 4870.74 PS SCALE 2A)OO FEET 2@ -\ --u Zorg ytt! L.VL Pi0e I L. 474.5 ls 6 ,I X sq zo.g X 5474.3 +it .o .4 * so83.o 5484-6 -.,.... 5t ,7 \ 1 54 x'.. { HL it-b + X 547 5.2 5473,5 ._ 54 5Z.O* f,.g 549t.8 5492.2 Xo",g X 549t.3 l-u ooo Zone- X o Zone.AL tz.l u€rl h+ 6-\ 63r,379 t,4r4,931 a to\,- I.-/ E r,42O,OOOE r,4r9,OOOE tt4t8,0ooE r14rloooE I ,4l6,ooo ! 3( (t 6 o97036 ooo- @ @ 2 E t,42O,469 I I 554 e.5 583 N 634,rO5 E 1,41 6,2 1 5 5 54 3,2 N 632, E 1,418 ,6759.7r5 585N 634,OO4 E l,4rB,gg4 5 534l.4t N E 607 N 635,Q70 E 1,419,75? 588 N 632;628 E 1,419,8 7l 589 i N 632r565 E r,420,Ol2 590N 632',499 E 1,419,939 608N 635,3?9 E r,42O,l4l N 633,2 r0 E r,4r9,556 606 N 633,O04 E t,419,569 554 9.4 607 N 633,562 E 1,42O,652 3533,O54 t.416,46O N 584N 634,392 E l,4r71608 606 N 634,785 E 1,419,333 55 50.3 N l f -- i !| \-- i I I I ooo- 19 z ts ! T F ooo- @ z IX I I 5522.5 0 o X F I T ,4 ,lo X ooo- @ z 599 ooo @ z 3 584 N 632,319 E 1,418,o63 ,825 5S6 N 633,325 E 1,419,270 586 N 633,079 E t,4 r 8,B 40 587 N 652,632 E 1319,224 588 N 632,368 E t,419,469 589 N 652,312 E 1,419,483 590 N 632,290 E r,4 I 9, bO2 583N 632,847 E 1,416,917 N 631 588 N 632,437 E 1,4'9,691 589it 632,402 E 1,419,7t8 N 632,375 E 1,419,759 607 N 632,927 E I,420,894 E r,qat,ooo - l Zone dg x 22,t Q/?<ooOt 5490.9 J,i. 5510 Tonks ?5 .:-:'. - *61.1 fii X 5505.6 --. x 50 3.€ 7,221q. 5501.4 5 50 2.6 .. X 550 x 2,2x BASIS OF HORIZONTAL CONTROL, THE ffi STATE PLANE COORDINAIE iis-irrvr-.brr,rrnau zoNE, LaMBERT coNFoRM/ ioiriC ijnoJecrroru. THE FoLLowlNG (usc a airjroc usas) TRtANGULATToN srarloNs WERE USED' NAME ORDER COORDINATES CATHERiNE 2nd x' 1,516'508'4?Y: 581,255 78 BASIS OF VERTICAL CONTROL' SEA LEVEL DAIUM BASEO ON FOLLOWING BENCHMARKS ' A HoRtz. coNTRoL O ivERTlcaL coNTRoL GRID POINT I CROSS SECTION o POLE _ x ... -- FENCE TREE BRUSH or SCRUB FOUNoATION or RUINS SECTION LINE rouro sEcrtoru cdRltER UNFOUND SECTION CORNE APPROX. SECTION LINE COMPTLATION BY PHOTOGRAMMETRIC METH( FROM 6..C.81. VERTICAL AERIAL pHoroonapHv TAKEN NOV. 15,r6,817, 1982 THIS MAP COMPLIES WITH NATiONAL MA ACCURACY STANOARDS PREPARED BY. ANALYIICAL SURVEYS, INC. 4167 SINTON ROAD coLoRAoo SPRINGS, CO. 80907 303 - 593-O093 2000020040-l# CONTOUR INTERVAL- 2 FEET 2^d 2nd X .#" ,23r,566.6O 523,643. lO ORDER LEGEND x: I Y 3rd + *t_ I ONAT NAME D-r56 4870:74P5 BENCHMARK PHOIO CENTER usc a 6s THE ELEVATION 6t92.2A4 4869.860 SCALE IN FEET tli-- r COLORADO RIVER ANO TRIBUTARIE FLOOD .PLAIN STUDY DEPAFITMENT OFIHE ARMY s{cMilE}rlo otsnlfi, coRps 0t EilctNEERS 650 CAPITOI MAIL &{cMritEilIo, cAt-tFoRNlA 95814-4794 PREPARED FOR GARFIELD & MESA COUNTIES' CoLOR/ IN COOPERATION WITH COLORADO WATER CONSERVATION BOARI 0ENVER, C0LORAoO DECEMEER,1982 JUL - rgs? E 1,4 t7 tt24 ,o MATCH SHEET C.I8I.TOP 587 N 532,978 E 1,419,614 c-l