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HomeMy WebLinkAbout1.19 Geohydrology ReportGeohydrology Report PDC Energy Piceance Centralized Soil Treatment Facility OLSSON ASSOCIATES OA Project No. 011 -2627 760 Horizon Drive, Suite 102 1 Grand Junction, CO 81506 1 TEL 970.263.7800 1 FAX 970.263.7456 GEOLOGY AND HYDROLOGY PDC CENTRALIZED SOIL TREATMENT FACILITY GARFIELD COUNTY, COLORADO PREPARED FOR: PDC ENERGY 1775 SHERMAN ST, STE 3000 DENVER, CO 80203 PH: (303) 860 -5800 CONTACT: RANDALL FERGUSON PREPARED BY: OLSSON ASSOCIATES 4690 TABLE MOUNTAIN DRIVE GOLDEN, CO PH: (303) 237 -2072 CONTACT: BEN BAUGH MARCH, 2012 OLSSON ASSOCIATES PROJECT No. 011 -2627 Table of Contents 1.0 SITE GEOLOGY 1 2.0 SITE HYDROLOGY 1 2.1 Groundwater Wells Within a 1.0 Mile Radius 1 2.2 Hydrologic Properties 1 3.0 SURFACE WATER FEATURES WITHIN A 2.0 MILE RADIUS 2 4.0 EXISTING QUALITY OF GROUNDWATER 2 5.0 EVALUATION FOR POTENTIAL IMPACTS TO GROUNDWATER AND NEARBY SURFACE WATERS 3 6.0 SOURCES 3 List of Tables Table 1- State Registered Groundwater Wells Within 1.0 Mile Radius of the Proposed Piceance Centralized Soil Treatment Facility Table 2- COGCC Water Quality Data for the Area List of Figures Figure 1- Geology in Proximity to the Proposed Site Location Figure 2- State Registered Wells Map within 1.0 Mile Radius Figure 3- Surface Water Map within 2.0 Mile Radius Figure 4- Floodplain Map of the Colorado River 1.0 SITE GEOLOGY According to available geologic information, surficial deposits within the area of the proposed site consist of young terrace and fan gravels of Grand Mesa (Qg). Grain size is typified by glacial and non - glacial pebble, cobble and boulder gravel within a sandy matrix. Grains are often imbricated and textural maturity ranges from moderately to well sorted, and subrounded to rounded grain surfaces. Parent material is derived from assorted sedimentary of the Wasatch formation from high topography to the north and averages five feet to 200 feet thick (Yeend and Donnell, 1968). Nearby water well boring logs report these sediments to be approximately 70 feet thick northeast of this area and 30 feet thick southeast of this area. Bedrock is comprised of the tertiary Wasatch Formation (Tw) consisting of red, gray, and purple to lavender shale and clay. The upper most member of the Wasatch Formation, the Shire Member, likely makes up the bedrock beneath the site, and is dominated by red claystone with minor fine to coarse grained sandstone lenses (Yeend and Donnell, 1968). Boring logs for water wells northeast of the proposed Site report the Wasatch Formation at 70 feet below ground surface (Table 1) and boring logs for water wells southwest of the proposed Site report red clays at 26 to 30 feet below ground surface. 2.0 SITE HYDROLOGY 2.1 Groundwater Wells Within a 1.0 Mile Radius Boring logs exist for three permitted water wells (permit numbers 61348 and 254154) 0.5 miles to 0.9 miles (191475) northeast of the Site, one water well (279215) 0.75 miles south of the proposed Site and four water wells (40191, 64545, 124680 and 239431) approximately 0.75 miles southwest of the proposed Site (Figure 2). Depth to groundwater at the time of drilling for the wells to the northeast ranged from 15 feet (1970) to 55 feet (2004) below ground surface (fbgs). Depth to groundwater for the water well south of the proposed Site was 32 fbgs (1992). Depth to groundwater for the four water wells southwest of the proposed Site at the time of drilling ranged from 12 fbgs (1983) to 22 fbgs (2002). Use codes for these water wells, total depths, plain casing intervals, perforated casing intervals, constant yield and lithological comments are included in Table 1. Well construction and test reports can be found at the Colorado Division of Water Resources website. 2.2 Hydrologic Properties The shallow aquifer for the area of the proposed Site consists of young terrace and fan gravels of the Grand Mesa formation (Figure 1) as mapped by Yeend and Donnell (1968). The estimated groundwater flow direction is likely to be sub - parallel with the Colorado River, flowing south - southwest approximately 1500 feet south of the proposed Site. Saturated hydraulic conductivity (ksat) for gravel- sand -silt mixtures is known to range from ksat 10 -3 to 10 -6 centimeters per second (cm /s). For gravel and sand mixtures with little to no fine grained material, these sediments generally have a hydraulic conductivity of ksat 10-2 cm /s. 1 Within the area of the proposed Site, the Custom Soil Resource Report for Rile Area, Colorado, Parts of Garfield and Mesa Counties, reports Arvada loam to a depth of more than 80 inches for a typical soil profile and a Ksat value between 4.23 x 10 -5 cm /s and 1.4 x 10 -4 cm /s. The Arvada loam exists in the central area of the proposed Site. Badland soil comprises the western and part of the northern area of the proposed Site and is reported with a thickness of 0 -3 inches for a typical section, is composed of weathered bedrock and is typified by a Ksat value between zero and 1.4 x 10-4 cm /s. The Nihill channery loam makes up most of the eastern portion of the proposed Site, has a depth of more than 80 inches and a Ksat between 4.23 x 10-4 cm /s to 4.23 x 10 -3 cm /s. Dann et al. (2009) used a variety of methods to characterize hydraulic properties in an alluvial gravel vadose zone similar to that of the surficial material expected for the proposed Site and report site - averaged estimates of saturated hydraulic conductivity between 4.16 x 10 -4 cm /s for samples with more fine grains and 4.5 x 10-3 cm /s for samples with sandy grains. Unsaturated hydraulic conductivity was calculated as high as 2.08 x 10-2 cm /s for sandy gravels when near saturation. Site specific field tests are needed in order to determine the actual permeability, hydraulic conductivity, flow rate and calculation of a potentiometric surface at the proposed Site location. Percolation tests were completed at the proposed Site location and these results will provide additional insight into the hydraulic conductivity expected in the shallow subsurface of the proposed Site location. 3.0 SURFACE WATER FEATURES WITHIN A 2.0 MILE RADIUS The most significant surface water feature in proximity to the proposed Site is the Colorado River, and flows south - southwest approximately 1500 feet south of the proposed Site (Figure 3). The closest stream channel to the proposed Site location is an ephemeral stream that drains an unnamed canyon directly to the north. Named drainages within two miles of the proposed Site location include Balzac Gulch less than one mile to the northeast, Cache Creek approximately 1.8 miles to the east, and Cottonwood Creek approximately 1.5 miles south of the proposed Site (Figure 3). There are no surface water bodies or stream channels located within the boundaries of the proposed Site location. The extent of the Colorado River floodplain is shown in Figure 4. The southwest corner of the proposed Site location is approximately 800 feet from the Colorado River floodplain. The rest of the southern boundary of the proposed Site location would exist between 1100 and 1300 feet from the Colorado River floodplain. The western portion of the proposed Site sits partially on alluvial fan deposits that were deposited from the drainage located north of the proposed Site. Alluvial fans commonly consist of silt, sand, and gravel, and can experience surface drainage constrained in either ephemeral stream channels or as sheet flow during high precipitation events. 4.0 EXISTING QUALITY OF GROUNDWATER The Colorado Oil and Gas Conservation Commission has public water quality data for eight samples located in an adjacent section (Section 36, T6S, R95W) to the area of the proposed Site location. This data is provided as Table 2. Hydrocarbon constituents were not reported in any of the samples collected. As shown on Table 2, all other constituents were reported below 2 their respective Maximum Contaminant Levels (MCL) when applicable. Notably, reported Sulfate values are low and indicative of shallow aquifer Colorado River water and not water derived from the Wasatch formation, of which higher Sulfate values are expected. 5.0 EVALUATION FOR POTENTIAL IMPACTS TO GROUNDWATER AND NEARBY SURFACE WATERS As stated previously, no stream channels or water bodies exist within of the proposed Site location. Based on the most recent available groundwater well data in the vicinity, groundwater at this location can be expected to occur between 22 feet and 60 feet below ground surface. Bedrock of the Wasatch Formation is expected to lie between 30 feet and 70 feet below ground surface. The Wasatch Formation consists of shales and clays, which are impermeable with very low hydraulic conductivities. Given the depth to groundwater and low hydraulic conductivity of bedrock, it is unlikely that deeper aquifers could be affected by the land treating petroleum hydrocarbon impacted material at or within twenty four inches of the surface. However, site specific data is needed to assess and confirm actual site conditions. The site will be graded such that a storm water collection basin will collect the runoff from the Site, and the moisture that infiltrates the impacted materials will be used to promote biodegradation of the impacted materials. The eastern portion of the proposed Site location lies on an alluvial fan, of which can be subject to surface drainage confined to ephemeral stream channels or as sheet flow during high precipitation events. The drainage north of the proposed Site location poses a risk to material draining into the Colorado River from the proposed Site location in the event of a high enough precipitation event and engineering controls are needed to mitigate this risk. 6.0 SOURCES Characterization and Estimation of Hydraulic Properties in an Alluvial Gravel Vadose Zone, 2009, R. Dann, M. Close, M. Flintoft, R. Hector, H. Barlow, S. Thomas and G. Francis; Vadose Zone Journal, 8:651 -663, Soil Science Society of America Geologic map of the Rulison quadrangle, Garfield County, Colorado; 1968; OFR; 68 -335; Yeend, Warren E.; Donnell, John R. USGS National Hydrologic Dataset http: / /nhd.usgs.gov/ Colorado Division of Water Resources database http: // water. state.co.us /Home /Pages /default.aspx United States Department of Agriculture (USDA) — Natural Resource Conservation Service. http: / /www.nres.usda.gov /wps /portal /nres /main /national /home Colorado Oil and Gas Conservation Commission (COGCC) http://cogcc.state.co.us/ 3 Tablles Table 1: State Registered Groundwater Wells Within 1.0 mile Radius of the Proposed Piceance Centralized Soil Treatment Facility, Groundwater Well Permit # Usecode Date Drilled Static Water Level Total Depth Plain Casing interval Perforated Casing Interval Constant Yield Lithological Comments (ft) (ft) (ft) (ft) (gpm) Wells northeast of site 254154 191475 61348 8,9 H 3 4/20/2004 11/20/1999 9/2/2004 60 `28 55 90 42 90 -1 to 90 0 to 42 -1 to 90 60 to 70 none listed 60 to 70 13 20 5+ Wasatch formation at 70' *Sand and gravel to 42' Wasatch formation at 70' Well south of site 279215 1 8 1 9/2/1992 I 32 I 80 I 0 +1 to 60 I 60 to 80 I 25+ 'Black to gray hard formation at 76' Wells southwest of site 239431 40191 124680 64545 8 8 1 G 12/15/2002 3/16/1970 3/3/1983 7/7/2006 22 15 12 20 40 40 53 20 0 to 40 0 to 20 0 to 20 NA 30 to 40 20 to 40 20 to 53 NA 15 15 10 NA Sand and gravel to 40' Red clay encountered at 30' Red clay encountered at 26' NA usecodes 1- crop irrigation H- Household use only G- Gravel pit well permit 3- Commercial 8- Domestic 9- Livestock watering ft- feet gpm- gallons per minute *28- not legible on well construction and test report NA -Not Applicable Colorado Oil Gas Conservation Commission Other Water Quality Data Garfield County, Colorado Table 2: COGCC Water Quality Data Collected Near (Section 36, T6S, R95W) the Proposed Piceance Centralized Soil Treatment Facility, , Garfield County, CO Facility ID DATE Bicarbonate as CaCO3 (MG /L) Calcium, dissolved (MG /L) Carbonate as CaCO3 (MG /L) Cation -Anion Balance ( %) Chloride (MG /L) Fluoride (MG /L) Hydroxide as CaCO3 (MG /L) Iron, total (MG /L) Magnesium, dissolved (MG /L) Manganese, dissolved (MG /L) Nitrate as N, dissolved (MG /L) MCL 6.5 -8.5 250 0.3 703125 10 703125 07/09/97 370 70.6 U 48 6 0.4 C C C C C C C C 0.02 39.6 U U 703041 06/11/98 425 80.8 U -0.5 5 0.5 0.02 38.5 U 0.1 703042 06/11/98 309 57.9 U 0 2 0.4 0.08 32.5 U 2.04 703043 06/11/98 394 75.9 U -0.6 6 0.5 0.01 34.7 U 0.86 703045 06/11/98 383 73.2 U -0.6 10 0.4 U 34.8 U 0.9 703046 06/11/98 381 73.8 U 0.6 10 0.4 U 35 U 0.89 703127 07/09/97 309 72.9 U 5 0.2 0.02 27.2 U 703126 07/09/97 288 63.7 U 4 0.4 U 28.5 U Facility ID Nitrate/Nitrite as N, dissolved (MG /L) Nitrite as N, dissolved (MG /L) PH, LAB (PH UNITS) Potassium, dissolved (MG /L) Residue, Filterable (TDS) @180 (MG /L) Sulfate SO4 (MG /L) Sodium, dissolved (MG /L) Sum of Anions (meq /L) TDS (ratio - measured/ calculated (ratio) TDS, Calc (MG /L) Total Alkalinity (MG /L) MCL 250 6.5 -8.5 500 703125 0.53 7.6 CO CO CO N 7 0 N N N CO CO M N 490 40 48 370 703041 0.1 U 7.9 450 30 44.1 9.3 0.99 457 425 703042 2.04 U 8.2 340 10 23.3 6.6 1.05 323 309 703043 0.86 U 7.9 440 40 49.4 8.9 0.98 450 394 703045 0.9 U 8 440 50 52.4 9 0.96 458 383 703046 0.89 U 7.9 440 40 52.9 8.8 0.98 448 381 703127 0.91 7.4 430 30 35.9 309 703126 1.31 7.6 400 20 31.6 288 Data is COGCC public domain water quality dat< MG /L- milligrams per litre TDS- Total Dissolved Solids U- constituent was not detected Figures UGSG Topographic Map, Garfield County Legend ® Site Boundary Access Road Q 217335200016 (Area: 364.66 acres) Highway /Interstate Parcels County Roads 1 1 1 Miles 0 0.125 0.25 0.5 PROJECT NO 011 -2627 DRAWN BY Jenna Muham. DATE 3/28112 TOPOGRAPHIC MAP PICEANCE CENTRALIZED SOIL TREATMENT FACILITY O\.OLSSO N ASSOC LAT ES 826 21 -1/2 ROAD GRAND JUNCTION, CO 81505 TEL 970.263.7800 FAX 970.263.7456 FIGURE T -1 Geology of Rifle Area, Colorado, Parts of Garfield and Mesa Counties PDC Land Farm • eteo Ir=r!11sv11il Approximat proposed site location Qg 0.0' Scale —1000' —2000' Imagery [131e: .3.1E3.+2.011 ;i 1993 mar Image 2011 DigitalGlobe © 2011 Goggle „,age USDA Farm Service Agency 39'29'30.1ff N 10.7 "57'05.92" W clev 52080 Qal Quaternary Alluvium Gooseear Legend Eye all 810011 PROJECT NO: 011 -2627 DRAWN BY: Ben Baugh DATE: 3/8/2012 Treatment Facility Geology in Proximity to the Proposed Site Location ry OLSSON ASSOCIATES 4690 TABLE MOUNTAIN DRIVE, SUITE 200 GOLDEN, CO 80403 TEL 303 237.2072 FAX 303.237.2659 Qg Tw Quaternary Gravels Tertiary Wasatch Fm. Proposed site location Alluvial fan Inferred formation contact 0 Nearby groundwater wells G1 \-`202848 21574 O. / j] 67992 65714 75022 064071 63623 f 75777 – '-149640. 149640 r•r•�lk .48963 .19 2731061•) 227117-47848 • 98518 69622 71917 71917 112305 40645(56633 89286 463.44 71080 `< 69622_.. 201133' 166185'19569° - - Puckett Land Company 217335200016 Area: 364.66 acres r1050897. USGS Topographic Map, Garfield County 0 93 'y 5.12Y 34— 1 -mile radius indicated by dark red circle 149334 238 Legend ® Site Boundary — Highway /Interstate 217335200016 (Area: 364.66 acres) — County Roads 0 State Registered Wells Parcels020912 all mile radial circle Miles 0 0.125 0.25 0.5 PROJECT NO 011 -2627 DRAWN BY Jenne Muhlbach DATE 3/5/12 STATE REGISTERED WELLS MAP PDC LANDFARM GARFIELD COUNTY, COLORADO O\.OLSSO N ASSOC LAT ES 826 21 -1/2 ROAD GRAND JUNCTION, CO 81505 TEL 970.263.7800 FAX 970.263.7456 FIGURE W -1 Hydrology Data p ovided by USGS National Hydrog aphy Data 't•l11111Y1•ve LIMA Inri : nv ∎r_IYWAM=MEN Legend Site Boundary — Stream /River 0217335200016 (Area: 364.66 acres) Surface Water 0 Parcels Highway /Interstate Q2 mile Radius — County Roads 0 0.25 0.5 1 Miles s PROJECT NO DRAWN BY Jenna Mubibam DATE 11128111 SURFACE WATER MAP PICEANCE CENTRALIZED SOIL TREATMENT FACILITY OLSSON AS5OCtATES 826 21-1/2 ROAD GRAND JUNCTION, CO 81505 TEL 970.263.7800 FAX 970.263.7456 FIGURE SW - 1 • n,� I� 1. • • • • • • • •X, • • is ; • R • 11 5/4 / acEI 5 Bo UGSG Topog aphic Map, Garfield County tti Legend ® Site Boundary FloodPlain 217335200016 (Area: 364.66 acres) Highway /Interstate Parcels County Roads 0 750 1,500 Feet 3,000 PROJECT NO 011 -2627 DRAWN BY Jenna Mulebacb DATE 3/6/12 FLOODPLAIN MAP PICEANCE CENTRALIZED SOIL TREATMENT FACILITY ON.OLSSON A55OCLATES 826 21 -1/2 ROAD GRAND JUNCTION, CO 81505 TEL 970.263.7800 FAX 970.263.7456 FIGURE F -1