The URL can be used to link to this page

Home My WebLink AboutSoil & Site Evaluation 12.08.202Engineering, Inc. CTVII,/GEOTËCHNICAL December 8,2022 Kevin L. Patrick 0197 Prospector Road, Suite 21044 Aspen, Colorado 81611 (970) 920.1030 patríck@waterlaw.com RE: Soil and Site Evaluation OWTS - 3 Bedroom ResÍdence Account R008776, Parcel 239 I 3040500 I 1002 Skipper Drive, Carbondale,CO 81623 Lot l, Stirling Ranch PUD Garfi eld County, Colorado Project No.2t-3550 RECEMED .,r*ill"^iFiåi,'.r,ï#;iT Dear Kevin, On September 2,2021, we visited your property on Lot l, Stirling Ranch PUD, at 1002 Skipper Drive, Carbondale,CO 81623, in Garfield County, Colorado. The purpose of our site visits was to select an area on the property for the proposed Soil Treatment Area. During the site visit, your excavator Ryan lvy, dug two profile holes. The OWTS is for a proposed 3-bedroom residence. It will consist of a 1O00-gallons, three-compartments concrete septic tank by Valley Precast with an effluent filter, and an Orenco Pump assembly, and the Soil Treatment Area will consist of 60 Quick 4 Plus, St¿ndard Infiltrator Chambers in a bed configuration with a 3-foot sand filter and pressure dosing. Revised site plan by Amos Underwood, PBR Workshop, and the information provided through recent emails, were used as basis for the septic system design and for the present relocation of the septic tank and the STA. Directions to the site from the Carbondale exit on CO- 82 are as follows: continue East on CO-82 for 3.8 mi to Catherine Store Road, turn left on Catherine Store Road, continue for 2.3 mi turn right on Co Rd 102, right on La Casita Road, right on Skipper Drive, continue to the end of the road. The lot is accessed via access easement west from the Skipper Drive cul-de-sac. Preliminary lnvestigation tr Address: 1002 Skipper Drive, Cørbondale, CO 81623. tl Legal Description; Lot I, Stirling Ranch PUD, Garfield County, Colorado. tr Existing Structures: There were no exísting structures on the lot. tr Location of existing and proposed wells on property: There are no wells on the property. It is services by public water. n Garfield County Environmental Health Department records: There were no old record. The property wos vacant. a tr Topography: The topography of the leachfield site is moderate with an overage slope of about I to 2 percent. Drainage is to the west. P.O. Box 724,Eagle, CO 81631 Tel. 970-390-0307 www.LKPEngineerine.com Patrick Res- 1002 Skipper Drive December 8,2022 ?age 2 of 4 Project 21-3550 a Soil Dat¿: The profile holes were observed on August 10, 2021. The soil exposed in the profile holeswas asþllows: ProfrJe HoIe #I 0 to I.0feet tapsoil 1.0 to 6þet whifish, sondy, silty clqt with some cobb.le^s No ground water encountered Prqfrle HoleNa 2 0 to L0 feet topsoil with roots 1,0 to 1.5 feet bloclqt clay 1.5 to 4þetwhitish, sandy, silty cløy with cobbles and boulders No ground water encountered A soil sample takenfrom Profile Hole I at 49-inches was classified as Type 3, LTAR: 0.35 gpd/sf CLAY LOAM Due to large boulders ond cobbles in Profile hole 2, 3 feet deep søndfilter and pressure dísnibution is recommended. tr Location of applicable setbacks in Table 7-l Reconnaissance tr Landscape position: The proposed STA will be located in the Summit/Shoulder Slope P o sition northw e st from the propo sed re sidenc e (down gradient) n Topography: The topogroplry of the proposed leachfield site ís relatively flaL The rows of infiltrators in the bed wíll run along the contours. n Vegetation: The vegetation within the proposed leachfield síte consisted of sparce wild grass, cocti, sage brush, and juniper trees. There were also basalt roclcs on the surface. The site surroundíng the leachfieldwas similar. n Natural and cultural features: According to the Stirling Ranch Website: "The ranch is located on a high mesa overlooking the Roaring Fork Valley colled Missouri Heights. Missourí Heights was settled hack in the 1800's by ranching pioneers. They planted potatoes, hay, wheat, alfalfa, and barley, and raised beef cattle and sheep. That is still the case for ø few ranches today. The plateau is dotted by old patato cellars and school houses. The historíc Missouri Heights Schoolhouse, near Stirling Ranch's entrence, hosts meetings and events." P.O. Box 724,Eagle,CO 8l 63 I Tel. 970-390-0307 www.LKPEngineering.com Patrick Res- 1002 Skipper Drive Dçcember 8,2422 Page 3 of 4 Proiect 2l-3550 a a tr Current and historic land use: The current use is residential and ranching. Prior use was ranching. Det¿iled Soil Investigation ü Visual and tactile evaluation of two or more soil profile test pit excavation; Two profile holes were dug, observed, and logged and visual and tactile evaluation test was done. tr Percolation tests plus one or more soil profile holes or one or more profile test pit excavations: Three pro{ile holes were observed and logged on September 2,2021. Report and Site Plan tr Name, address, telephone number, email address, and credentials and qualification of individual who conducted site evaluation: This site evaluationwas completed fut Luíza Petrovska, PE, of LW Engíneering, Inc. LKP Engineering, Inc., is located qt 67 Rohins Egg Lane, Eagle, Colorado. The phone number ís 970-390-0307 and Luiza's email is luiza(Ò,lkpens.com Dates of preliminary and detailed evaluation: A graphic soil log, to scale: Anached Setback distances in Table 7-1: Main House September 2, 2021 lltell Potable water Structure with basement Structure w/o basement PL Lake Surface tlater Intermiltent Irrigøtion lateral Septic Tank Tank n/a >10'>5 >5'-80'NPL n/a n/a STA n/a >25',>20'>10'-75'NPL n/a n/a -I T' Setback distances in Table 7-2: Items l-4, obsewed. No groundwater encountered. A drawing (to scale) with complete property boundary lines on rninimum of 8.5 x 11" Label profile test pitsltroles North Arrow Graphic scale Horizontal and vertical reference points ofproposed STA Contours OR slope direction and oá slope Location of any visible or known unsuitable, disturbed, or compacted soilsI The proposed elevation of the infiltrative surface of the STA from benchmark or ground surface Anticipated construction related issues: Large, basalt boulders n n u n n n P.O. Box 724, Eagle, CO I I 63 I Tel. 970-390-0307 www.LKPEngineering.com Patrick Res- 1002 Skipper Drive Deçembçr 8,2022 Page 4 of4 Project 21-3550 The graphic soil log is appended to this report. LKP Engineeringr lnc. Assessment of known or foreseeable land use changes expected to affect the system performance: None lmown. Narrative explaining difficulties encountered during site evaluation: n0ne .Sllttft:''ffi, i *-:.fl ' lztostzozz'":()', 'Åv,::'äÅweryt*tff' LuizaPçtrovska' PE Enclosure Jr_wP X4-LKPL202 l\2 1-3550SOIL-SITE-EVAL:BED-PRESS-3FT-SAND.DOÇX P.O. Box 724, Eagle, CO I I 63 I Tel. 970-390-0307 www.LKPEngineerine'com DA'IE OBSER\ÆD: Scptcmbq 2,2O21 EIEVAÏION: Profile Eole f I DEPfI] Æsr s Yu B o L s Aìt P L E DESCflPNON tr 'IATERIALAND SA'IPIE LæANOî,I LABOßATORY TEST RESIILI.5 RETIARKS ı -to -tã n I TopsoÍl Whítísh, sondy, sílt¡t-claY wìth some cobbles, at48" CIAY LOAM, Type 3 Landscape Position: SummiUShouldel Slope Shape: LL Vegelation: juniper trees, cac'ti, sage, grass, basalt rocks Shapo: prismatic, blocky Grade: moderate Consistence; ftiable, firm \-fyps 3, LTAR = 0.35 gpd/sf <357o Rock (>2mm) equally gritty and smooth, 1"-2" ribbonRefusol @ 6 feet No Ground Woter Encountered T¡EGEND: tr - 2-înch O.D. Calîfotnîo Llncr SunplcI - Bulk SarnPlcI)D - Noturol Dry DasltY (Pcf ItC - Noturd lloÍetura Contat (Z) -2U) - Parcæt Posshg No. 2AO S/cveU - Uquìd LlmítPl - Ploetîcþ lndexCW - &ound vatæ I,TP ENGINEEBING, INC.SI'BST'NFACE EXPIORATION If}G P'oÆf n:2r-5550 ffiÆ ra:Prof-l ÐATE æSERVED: Scptenrbcr 2,2O21 ELEVAIIOI,I: Profile Eole f 2 TEPNIntr s Y H B o L s A H P L E ÐESOflPNON æ HATMIAL AND SAHPLE LOCANO$I LAEORAIORY ïEST RESULIS RE'IÆRS _to -15 _m Topsoíl Blocky cloy WhitÍsh, sílty, cobbles ond sondy, cloy wîth boulders Landscape Position: SummiVShouHet Slope Shape: LL Vegetation: juniper trees, cac't¡, sage, grass, basaft rocks Shape: prismatic, bloc*y Grâdê: moderaté Consistence: fiable, firm Refi,tsol @ 4 feet on bouldets No Ground Woter Encountered I,BGENDI tr - Z-lnú O.t). ColÍfo¡nlø lJnç SønpleI - Bulk SatnpleDD - Natural Dry D*rslty (pcf) llî - Î,løturat ltolstarc Contæt (Z) -2OO - Pcrcat Paælng Nd 2(þ SlcveU - LîEtíd UmitPl - Plostlclty lndexCJY - Ground tatç I.TP ENGIIITEEßING, INC.SUBST'NFACE EXPTORATIOT{ IOG FWr t&:2t-3550 ,nEm:Prof-2 Pump Selection for a Pressurized System - single Fam¡ly Residence Project 21355O Patdok I 1002 Skipper Drivq CaÈondale Pa¡emeteÉ Oi$lErge iqsffibv SÞe TmnÐort Lmgth T€nspod P¡pe Clas Tßnsport Lire Size Distribul¡ng Valvo Mod€l Mã Elavatim Lilt Manifold t€ngth Manibld Pipe Cl6s Manitu{d Pipe 6¡ze Number of LateEls per cell LåtsEl Lenglh LateEl P¡pe Clñ Latord Pipe SÈo Oriñæ Size ffiæSpdng R6¡dù¿ll.l€ad Flof, Melêr Calculadons M¡n¡rum Flor Rds ps Ormæ Numbd of Oriñæs per Zme lot8l Flw Rate per Zoæ Nmber of Lâte¡ãls ps¡ Zoæ % Flw Diñercntial tsll-ast Orifæ TEnsport l¡elæily Frictional Head Loases 2.00 inches 3{t H 40 1.5O ¡ncñes Nmo 5 feet 8.5 fæt 10 1.50 inclEs I 62 fæt 40 l.5O inchos 118 ¡nches 4 teel 5 fæt Nmê ¡nches 0 leet % Þs 0.¡ß 6,1 27.7 1 o.7 1.1 gpm gpm 100 80 ooILrôÞdtúo¿ I t (úc o IE -o Loss thrcr4h Di8drafge Loss in TEnsport L¡ss thrcugh \,fah6 LGB ¡n Mânitu[d Loss in l¡tmls Loss tho¡¡gh Fbrme{ef 'A¡l¡lon'FrictÌon LM Pipe Volúmcs 1.5 1.1 0,0 0.1 0-t 0_o 0.0 frst feet f*t fest fæl fæt fe6t Vol ofTBnsport Lim Vol of Maúidd \/o¡ of L¡tôrals pêr Zqe Total \,blume minimum Pump Requ¡rements 3.2 gals 0.9 gals æ-2 g8l5 30.3 gals Dæign Flw Ralo Tot8l Dymmic l-lead 27.7 l3_1 gÌpm fæt 0 .PumpDda 10 20 30 40 Net D¡scharge (gpm) 50 60 70 Lsse@ Pump çurve: Pump Opümå¡¡ange: op.rail@oinr, o*$ot, 80 PF50O5 High Hsd Efluorf Pump 50 GPM, 1¡2HP 11 5f2æV 1 ø 601+2, 2@ ngL ø îfr 1z ONSITELOT 1, STRLNGRANCH PUD1m2 SKIPPER mlwCÆBONDAIEGÁRFIÊLD COUW. COLOfìmPATRICK/WENDEL RESIDENCEcrDa/effiEngÍneering, Ine.P.O-tuz4re.æalñTdotM7w.fficfiUGìc i::r:rs . ë i';$1';'!5zmÍon,¡'làiseH¡3a7mrriı ÐOrmr .fdıP-lnÞl-^-'ln>ômcnzz1çnG)7>Z^LMYCÐmJ-{n9ozmBooIIIIIII'I_l5lotãlØIXl¿Dlmil9tolzlxthf4lol¿4Iôøâ*,Ë ãscs:sþxoEffiffi.?r,,. åiã5 '\ Ë¡ñt/ lI] ¡,lËååffik,l= r1::___{rE å åã'g ìtÉ-.E.*ÞFß;Eèq 9ÉPãIq8EIä¡åaË!¡fE;:eÈã-È:!il!gåååËËË¡åËËË*'Èe åå:E¡ç14'imä'ìEãffiËåËËËiiåffiffiËËËãgËåT€Þì990¿.íËir!¡¡cÊåI¡tIIIIdÌe ge¡r¡:rÈÈ €Ei¡ È:¡E :åEË Eã¡ã åÈË: ?rÉi ii:¡:¡! EÌ8:Êã¡Ëã;ãi:¡ gE;!ËË: ËftE.EE Ei"lË ËrE'- -È!¡ãqÈçðrËÊÉ¡ñËãe:TË¡i'åiãii i åruffir¡gffi¡ ¡'i'ËË åE'å$ ååfl Ëåå ãtr ËËËiÊãÊ'E'ååEË'åÊiËi¡ã¡ãåãEåiååå¡i-¡ÈÊ:9ÊãåEËåtıa9åEEãËå:#! !ãÈiþËiu,,,*E¡iË$;: tc9aErç:!6! 3ÉlI-1=2elt.i'Ê,Gaf-ì"slE2Ããıcqã#ëg2a:>q*s;¿2ö*;*Fovî,\-.,ûë!ai4i¡tti!llit¡i;!:.l',it t!rfðffi,|#i¡iiïi$'ff#Tiiiri'll