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Home My WebLink About1.06 Response to standards pump test water quality testW. Page Spracher 341 Homestead Road Glenwood Springs, CO 81601 Garfield County Building & Planning Dept. 108 8th Street Suite 401 Glenwood Springs, CO 81601 Attention: David Pesnichak RE: ADU Application Garfield County File No. GAPA 8374 Enclosed, please find the Final Engineering Report on the Water Quality & Production. I have also provided additional information as requested. Access to the County Road and Average Daily Trips Access to County Road 115 is via Homestead Ranch HOA Road and a short section of the BLM existing Road. Mountain Services provided you with a copy of Homestead's plat. The BLM Road is utilized by High Aspen Ranch HOA and Homestead HOA and the general public. ADT The Average Daily trips generated by this project will be 9.57 per your chart 7-107. The ROW is 60 feet wide and the actual road width is approximately 30 feet wide. This appears to meet your requirements. Impact Analysis The project is simply a 660 square foot residential unit in an existing structure. The impact will be similar to a 1 bedroom residential unit. The subdivision, when approved in the 1970s, allowed for a caretaker unit and was approved or allowable by Garfield County. You were previously provided a copy of the original covenants. Grading and Drainage The building drains to the driveway ditch that has been in place since the house was built. This is a relatively flat site and the existing building where the ADU is being built has not generated problems or erosion. It has been in place for over eight years. A topo is provided. You have a survey showing the location of improvements as well. {A0078874/l Waste Water Management A new septic system will be built for the ADU. There is adequate room and the ADU is over 600+ feet from the well. A perc test will be performed in the spring. The main house is on a septic system and has performed adequately for 20+ years. Improvement & Development Agreement I would like to request a waiver of this requirement. 1A0078874 1 1 j P.O. Box 1908 1011 Grand Avenue Glenwood Springs, CO 81602 / Z414C4NELL4 4140 4S5OCWTE5, INC. ENGINEERING CONSULTr4NT5 January 11, 2016 Page Spracher 341 Homestead Rd. Glenwood Springs, CO 81601 RE: Spracher Well Pump Test Dear Page: (970) 945-5700 (970) 945-1253 Fax At your request, Zancanella and Associates monitored the pump test of the well on your property at 341 Homestead Road, Glenwood Springs, Colorado. Samuelson Pump Co. conducted the 4 - hour pump test on the well on December 2, 2015. The well was drilled under Well Permit #102611. We have summarized the pump test data below. Water quality samples were collected and shipped to ACZ Laboratories in Steamboat Springs, Colorado for laboratory analysis. Well Construction The well is situated in the SE1/4 of the NE1/4 of Section 36, Township 6 South, Range 88 West, 6th P.M. at a point 3090 FSL and 940 FEL of Section 36, as shown in Figure 1. The well was completed on July 17, 1978 to a total depth of 80 feet by Golden Eagle Drilling Corporation. Information about the well construction was obtained from the Well Completion and Pump Installation Report (attached) on file with from the State Engineer's Office. The well was drilled with a hole diameter of 7 7/8 inches from 0 to 28 feet. Steel casing with a diameter of 7 inches was installed in the upper 28 feet of the well. Cement grout was placed around the casing between the depths of 0 and 20 feet to prevent surface water infiltration into the well. Drilling continued from 28 feet to 80 feet with a hole diameter of 6 1/4 inches. Steel perforated casing with a diameter of 5 9/16 inches was installed from 25 feet to 80 feet. The driller's log indicates that the well was drilled entirely in "sand, gravel and boulders". The geologic map of the Carbondale Quadrangle (Kirkham and Widmann, 2008) indicates lava flows of trachyandesite and basaltic composition. Figure 2 presents a detailed well diagram. Pump Test The static water level prior to the pump test was 12.1 feet below the top of the well casing. A pump that was already in the well was used for the test with its intake at a depth of 76 feet. This setup allowed for a maximum drawdown of 63.9 (76 minus 12.1) feet. The pump test began at 10:08 AM on December 2, 2015 and pumping ended at 2:08 PM for a full 4 hours of pumping. The test was started at a pumping rate of approximately 12.3 gallons per minute and was continuously pumped at that rate for the remainder of the test. A total of approximately 2960 gallons was pumped from the well during the test. Before the test began, a pressure transducer with a data logger was placed in the well. The transducer measured the water level in the well every minute for the duration of the test. The data has been compensated for changes in barometric pressure using another transducer located at the surface near the well. The well was also tested manually using well sounding equipment to verify the electronic data. The water level drawdown (the distance between the static water level and the water level during the pumping portion of the test) is shown in Figure 3. A maximum drawdown of 17.3 feet below the static water level was achieved during the 4 hours of pumping. This pumping level was equal to 27.1% of the total available drawdown. The well was able to sustain the 12.3 gallons per minute pumping rate as evidenced by the nearly level line of the drawdown graph shown in Figure 3 after the first 30 minutes of pumping. Recovery was monitored in the well by the transducer and by manual readings for one hour after pumping stopped. The maximum measured water level during the recovery period was 12.0 feet. The well demonstrated a normal recovery. We estimate that the well can be pumped at the rate of 12.3 gpm for extended periods. The water level during recovery is illustrated in Figure 4. Water Quality During the pump test, water samples were collected and sent to ACZ Laboratories in Steamboat Springs, Colorado for analysis. The results of those analyses are attached as Table 1. All of the analytical results are below the applicable Maximum Contaminant Levels (MCLs) as established by U.S. Environmental Protection Agency and the Colorado Department of Public Health and Environment and are considered safe levels for drinking water. Water Use It is our understanding that you intend to add one ADU that, along with the existing residence, will use water from the Spracher well. The well is permitted as and exempt domestic well on a 35 acre tract and is therefore capable of serving up to 3 single family dwellings and up to one acre of gardens and lawns. The existing structure and the ADU would comprise 2 EQRs, which are generally regarded as using 350 gallons per day each, or 700 gallons per day. Summary and Conclusions Data from the Spracher well pump test indicate that the well should be able to supply the existing residence, the proposed ADU and conservative outside watering requirements. If you have any questions, please contact our office at (970) 945-5700. Very truly yours, Zancanella & Associates, Inc. Wiley C. 'eek, Geologist ancanella, PE Attachments z 12015 jobs115411 sprachenspracher pump test report.docx Zancanella & Associates, Inc. 2 LOCATION MAP SCALE: 1" 2000' DRAWN BY: CHKD BY: APPD BY: BCP r.. BCP TAZ DATE: DEC. 15. 2015 SHEET: 1 OF 1 DRAWING: LocTopo.dwg PAGE SPRACHER ZANCANELLA AND ASSOC/A TES, /NC. E 6/N ER/NG CONSUL TANTS POST OFFICE BOM NOB - 1011 GRAND AVENUE GLENWOOD SPRINGS, MOIONADO 01002 (070) 045-9700 FIGURE NO. PROJECT: 15411 GROUND LEVEL PAGE SPRACHER WELL PERMIT #102611 SEiNEi 3090 FSL, 940 FEL SECTION 36 T6S, R88W, 6TH P.M. COMPLETED 7/17/78 Tertiary Lava Flows of Trachyandesite Basaltic Composition TOTAL DEPTH 80' 0 10- 20- 30- 40- 50- 60- 70- 80- L 0' TO 28' 7 7/8' HOLE DIAMETER STATIC WATER LEVEL 12.1' ON DECEMBER 2, 2015 0' TO 20' CEMENT GROUT +1' TO 28' 7' PLAIN STEEL CSG 20 LBS 28' TO 80' 6 1/4' HOLE DIAMETER 25' TO 80' 5 9/16' STEEL PERF CSG WELL DETAIL NOT TO SCALE DATE: SHEET DECEMBER 16, 2015 1 OF 1 DRAM BY: CHICO BY: APPD BY: BCP BCP TAZ PLAN NO. wallOatalLdwg PAGE SPRACHER WELL ZANCANELLA ANO ASSOCIATES INC. ENGINEERING caAarrAnt POST OFFICE Pmt 1900 - 1011 PIAND AwJAR Gtl11Sn00 SMOGS. COLORADO ma: (U1U) MD -5r00 PROJECT: 1 541 1 Manual Readings —.—Transducer Data 1 1 1 1 1 1 i th of Well = 60 ft d 0 67.9 ft below static water level c- —uidsE Zt ma setat76ft tic water level 0 0 C. 63.9 ft below 1 u 1 1 1 r 0 0 0 0 0 o o 0 0 0 N m v in up {banal mem 3Ren wo.;;aad) umopmeiq 1 1 1 1 1 0 0 0 0 0 0 0 0 1 0 Time Since Pumping Started (min) 1atic water level 67.9 ft below Manual —0— Transducer (banal aa;eM Dike;s won laa3) Axanoaaj 0 O 1 60126-777 _ - THIS FORM MUST 8E SUBMITTED WITHIN 60 DAYS OF COMPLETION OF THE WORK DESCRIBED HERE- ON. TYPE OR PRINT IN BLACK INK. COLORADO DIVISION OF WATER RESOURCES,/ 1313 Sherman Street - Room 818 Denver, Colorado 80203 WELL COMPLETION AND PUMP INSTALLATION REPORT PERMIT NUMBER 102'311 WELL OWNER -:ale .: hi'orink ADDRESS ...,ore 1321, CErbondale, Co. 31623 DATE COMPLETED July 17, WELL LOG .19 78 From To Type and Color of Material Water Loc. 0 Use Sand, h ou.1der. 80 TOTAL. DEPTH additional pages necessary to complete log. 80 772, Y. of the T- R 83 MOLE DIAMETER 7 7/8 in from 0 to 6 L/14 in from _ 28 to RECEIVED MAR 2 6 1979 MER RESOURCES Sin .114 ER V4 of Sec. 36 it 28 ft. 80 ft. in. from to ft. DRILLING METHOD -'.Diary 6th P1 CASING RECORD: Plain Casing Size 7 & kind a, from 0 to Size & kind Size -. — & kind from to Perforated Casing from to Size 5 9/143i kind •1118 Size & kind Size & kind GROUTING RECORD Material Intervals from 23to 30 from to �.., from to Ei;1eft - 20 Placement Method GRAVEL PACK: Size 3ravii Interval TEST DATA Jul .17, Date Tested , 19 Static Water Level Prior to Test Type of Test Pump Length of Test Air 0 20 minutes Sustained Yield (Metered) 2; gpm . . Final Pumping Water Level Total PUMP INSTALLATION REPORT 'ump Make ype - 'owered by HP 'ump Serial No. Rotor Serial No. )ate Installeo 'ump Intake Depth iemarks VELL TEST DATA WITH PERMANENT PUMP )ate Tested static Water Level Prior to Test _ength of Test Hours sustained yield (Metered) GPM 'umping Water Level Remarks 1— m • • WATER TABLE • • • ♦' • -r CONE OF DEPRESSION CONTRACTORS STATEMENT The undersigned, being duly sworn upon oath, deposes and says that he is the contractor of the well or pump installation described hereon; that he has read the statement made hereon; knows the content thereof, and that the same is true of his own knowledge. Signature --3 License No. 387 State of Colorado, County of Eunnnit SS Subscribed and sworn to betore me this/lay of , 19/i My Commission expires: , 19 1:`/ Notary Public 4r-9 FORM TO BE MAGE OUT IN QUADRUPLICATE: WHITE FORM must be an original copy on both sides and signed. WHITE AND GREEN copies must be filed with the Stele Engineer. PINK COPY is for the Owner and YELLOW COPY is for the Driller. Table 1 - Raw Water Quality Analysis Page Spracher Well Status N 0 CO O. N 0 0 0_ Pass ._ _ Pass 0 0 . CO '0_ Pass 0 co CO a Pass Pass Pass Pass Pass Pass L Pass co N CO as N 0 CO Pass L Pass N 0 CO as N 0 N r Pass 1 N N 0 0. N N 70 0. Pass Pass Pass N N l0 a Pass Pass ssed N VJ (0 a I Pass Pass Pass co N Ca aaaa N 0 0 N 0 0 N O7 Pass .1 Standard f Primary 1 Secondary �ta6 U-3 0 _ Cf t7SN I 250 to 0.2 0 O 0 0 0 N 0 CCCCC0 0 C r O 0 NO 0 N O 0 V In O 0 C 0.03 15 4 mremlyear 5 1.0 3 0 CI1 a 0.028 Below Detection Limit ? I- 0 CP C! 0.020__ Below Defection Limit c0 07 tO Below Detection Limit Below Detection Limit 0 0.0004 N7 O C Below Detection Limit 1 Below Defection Limit Below Detection Limit 7.8 Below Detection Limit W O = Below Detection Limit C Below Detection Limit N 0 0.35 t[f r, C C N C N Below Detection Limit O h 07 N N N ONNn+4 0 N nj 117 C] 0 7 N +I 0) 0 FS G ty +I N O 4 0.51 t 0.35 Absent gl c D c a z OS 0 = N N 0 o1a`v7w E E E E E 01rnrno�ao7070,07a70�rn07 E mg/L E E E E E E E E E E E E I mg/L as CN" rn E E rngLasN � mg/L as CaCO3 E= mg/L as CaCO3 Standard Units Standard Units °C mg/L E a UUU a a a 1 Present/Absent - Inorganic i Li c CO O C Inorganic inorganic Inorganic U 'E e0 e' 0 c 0 'E 00 E' 0 C Inorganic Inorganic 0 E CO E' 0 Inorganic 0 c CO 0 U C A e' 0 U E @ E' 0 0 C O7 E' 0 0 E CO E' 0 (Ina •anic Ina • anic Ino • anic Inorganic Cnorganic Inorganic Inorganic Inorganic 0 E CO L' 0 cc 0 'E CO E' o U C CO e' 0 C U c CO E' 0 C 0 'c CO E' 0 C U c CO E' 0 C U c CO Q' 0 cc 0 �E CO E' 0 Ina • anic Ino • anic Inorganic Radionudide [Radionuclide Radionuclide Radionudide Radionuclide Category Metal To i Metal To 22 To Metal 1 Metal co 22222 co co N o Metal 1 1D 2 (Metal _ Metal Melal Metal Nonmetal 'Nonmetal (Nonmetal _. Nonmetal Nonmetal (Oxidized Ammonia Oxidized Ammonia Wet Chemistry_ Wet Chemistry_ Pet Chemistry Wet Chemistry Wet Chemislry Wet Chemistry Wet Chemistry _ lUranium CO Z as Particle Radium Radium a a co c a Aluminum Antimony mcg•C 4 co ID m Cadmium Calcium Chromium Copper L- toa J Magnesium m ch c 2 Mercury 0 2 r to Sodium _ Thallium Zinc 'Chloride (Cyanide •5aci u. E ..e:E N Ua Z Z Alkalinity, Bicarbonate AlkalinityTotal Calcium Carbonate Conductivity, @ 25°C 1Hardness _ ILangelier Index H Temperature, Test Total Dissolved Solids G�roy_ ss Alpha Activit 'Gross Beta Activity Radium 226 Radium 228 ICaliform Bacteria Test No. rN Cry V to Co^co to 0rNCIsrN7COtiWO70...-mita N N NC*1N NNNN tO 28 29 0 N C7 132 33 34 32 t'1 CI ettoto NMN 138