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Home My WebLink About20200129.tiff z SOti LOGIC April 26, 2019 AGPROfessionals, LLC 3050 67th Avenue, Suite 200 Greeley, Colorado 80634 Attn: Ms . Kelsey Bruxvoort Re: Geology Report Lot 3 , Union Colony Subdivision 470 East 18th Street, Greeley Weld County, Colorado Soilogic Project # 19- 1107 Ms. Bruxvoort: Soilogic, Inc. (Soilogic) personnel have completed the geologic evaluation you requested for the above referenced parcel. Our evaluation was completed through review of mapped and published information concerning site soil and groundwater conditions. A list of the references reviewed is included with this report. M The subject property includes a total of approximately five (5) acres located in a portion of the Southeast y of the Southwest 1 of Section 9 , Township 5 North, Range 65 West of the 6th Principal Meridian, located at 470 East 18th Street in Greeley, Weld County, Colorado . We understand an existing equipment building is currently present on-site and the majority of the remaining lot is currently being utilized for hay production , We understand plans are in place to maintain the existing hay farming and utilize the existing equipment building as a diesel repair service. We understand construction of a single family residence on the subject lot may also be completed. We expect the proposed residential structure will be lightly-loaded 1 or 2-story wood frame structure constructed over full basements where subsurface conditions permit. Foundations loads for the structure are expected to be light, with continuous wall loads less than 3 .5 kips per lineal foot and individual column loads less than 75 kips . Based on aerial photography, the majority of the site appears to be vegetated in grasses and contains a small irrigation ditch running along the east property line on the north portion of the property which bisects the lot in an east west direction. The site gently Soilogicv Inc, 3522 Draft Horse Court • Loveland, CO 80538 a (970) 535-6144 Geology Report Lot 3, Union Colony Subdivision 470 East 18th Street, Greeley, Weld County, Colorado Soilogie Project # 19- 1107 2 slopes downward to the south/southeast with the maximum difference in ground surface elevation across the parcel estimated to be on the order of approximately two (2) feet based on review of topographic maps of the area, The included soil type delineation diagram outlines those soil groupings identified at the site by Weld County Soil Conservation Service ( C ) maps . SCS descriptions of those soil types are included with this report. In general , the near surface soils at this site consist of low plasticity sandy loam to sandy clay loam from the Otero Sandy Loam and Olney Fine Sandy Loam series . The near surface site soils appear to consist of eolian deposits andlor mixed deposit outwash from the Pleistocene geologic period . Geologic maps of the area indicate the overburden soils are underlain by the Laramie bedrock formation consisting of shale, claystone and sandstone from the Upper Cretaceous period. Mapped information indicates the property is not in an area identified as being flood prone and would be expected to have groundwater at depths ranging from approximately 10 to 20 below ground surface , According to SCS data, the depth to bedrock would be expected to be greater than 6 feet. Based on our review of the site as outlined above, we expect the near surface soils could be used for support of lightly loaded structures . Although not anticipated, deep foundation systems could be employed if heavy foundation loads are anticipated or if moderately to highly expansive soils and/or bedrock are encountered within close proximity to proposed foundation bearing elevations. Based on our review of published maps, the subject parcel does not fall within those areas identified as having economically recoverable sand and gravel, or metallic mineral resources , The subject property falls within oil and gas fields identified as having the potential for economically recoverable resources . Active wells tapping the referenced fields exist. within a quarter mile to the north of the referenced parcel. We expect the existing active well sites could continue to be utilized to extract oil and gas resources that may exist beneath the subject property and through directional drilling procedures such that further development of the subject parcel would not impede recovery. Geology Report Lot 3 , Union Colony Subdivision 470 East 18th Street, Greeley, Weld County, Colorado Soilogic Project # 19- 1107 3 We understand a portable restroom is proposed as the sewage disposal system for the subject lot. If anOn-Site Wastewater Treatment System (OWTS) is determined to be necessary, we expect conventional septic system construction could be completed across the subject lot, based on review of SCS maps of the area. Soils possessing Long-Term Acceptance Rates (LTAR) of 030 or less would require an engineered septic system design. A site specific evaluation would be required to better evaluate the Long-Term Acceptance Rate (LTAR) of the near surface soils and depth to bedrock and groundwater in proposed Soil Treatment Areas ( TA). During our review of available site data, we did not identify other potential geologic hazards as outlined in H.B . 1041 . We appreciate the opportunity to be of service to you on this project. If we cn be of further service to you in any way or if you have any questions concerning the enclosed information, please do not hesitate to contact us. Very Truly Yours, Soilogic, Inc. Reviewed by: sits/ 416.+ , . d �� * ■ Jo �I i +� a-i 73 fj; me .1 § 'M ' s i e i ,lN spegai \weft NAL teir Josh Schmidt Wolf von Car oit , RE. Engineering Technician Principal Engineer Geology Report Lot 3, Union Colony Subdivision 470 East 18th Street, Greeley, Weld County, Colorado Soilogic Project # 19- 1107 4 REFERENCES 1 . Colton R..E. and Harold R. Fitch, 1974, Map Showing Potential Sources of Gravel and Crushed-Rock A gre ate, in the Boulder-Fort ollins-Greeley Area, Front Rang Urban Corridor, Colorado : I.T. S . Geological Survey Miscellaneous Investigation Series Map I-855 -D. 2 . Cotton I ..I3 . , 1978, Geologic Map of the Boulder-Fort Collins-Greeley Area, Colorado: U. S . Geological Survey Miscellaneous Investigation Series Map I-955 -G. 3 . Hershey LA. and Schneider, Jr. P.A. , 1972, Geologic Map of the Lower Cache La Poudre River Basin, North-Central Colorado : U. S. Geological Survey Miscellaneous Investigation Series Map 1-687 . 4. Hillier D. and Schneider, Jr. P .A. , 1979 , Depth to the Water Table in the Boulder-Fort CollinsaGreelev Area, Fro Froae -Urban Corridor, Colorado: U. S . Geological. Survey Miscellaneous Investigation Series Map 1-855-I. . United States Department of Agriculture Soil Conservation Service and Forest Service in Cooperation with Colorado Agricultural Experiment Station, 1980, Soil Survey of Weld County Area, Colorado, Maps 239-812/3 . 6. Schneider, Jr. P. A. , 1983 Shallow Groundwater in the Boulder-Fort Collins-Greeley Area, Front Range Urban Corridor, Colorado 1975 - 77 : U. S . Geological Survey Water Resources Investigations Report 83-4058 . 7 . Soil Survey Staff, Natural Resources Conservation Service, United States Department of Agriculture. Web Soil Survey. Available online at http ://websoilsurveysnrcs.usda. gov accessed (April 24, 2019). 8 , Colorado Oil and Gas Commission, Department of Natural Resources, 2019 https ://cogccmap. state. co.usico a c_gis_online. Accessed 26 April 2019. Soil Map—Weld County, Colorado, Southern Part it KriTDD 527820 527840 a 527B80 5279CQ 527920 527g40 50950 A 7 �- L •` f - A 1 li J , ., _ • .. .._ . _ ___ _ __ _ _ _ • __a , s__ '4,-. ..m.,ek ___ _„•,,e _ zi - !t I F1 I R y L i, 1 IIlb - . 4% _ I ' i 41 t. `4 4 i f_ it an p U I i 4 -T4 0 i WM 11741 se II _ . fI I it lk- ' 4iits., ar ¶ will is 3 • ' 4 -a. -tern itut 4 ' nillims. _ * t aZ�lrw A IFl ,4 I I M 0 if o 0 ill . — P J J 7 ti me I III c -I Ili IN! 41 A i i i le I t i t _ 1-- 0 el_. . a i * Lit _ 63 S �.-- - r Virill * lir * s' 1,;! • e 4 1 I o iFt p1fl YI f i , >• '� 8 - -,• 4 yy/ a . A _ _ W41 �'aj�. y( 'II a 4 _ 1 $.. .m.` -1 ! 7 �1 i �I ` s T 1 'mil- ~' " 0 li i Sal i Nap A I k �F 40° 24' 29" W I il ,I I 4Q° 24' 29" N e27500 527820 W840 521BE0 527880 527900 WM 527940 5279E0 Maps Scale; 1:11150 if printed on A porirat (8.5" x 11") shcct 4 Ms N 0 15 30 50 93 S A0 50 10D 200 Map projection: Web Mwtabor Corner coordinates: WGS84 Edge tics: UTM Zone 13N W USDA Natural Resources Web Soil Survey 4124/2019 Conservation Service National Cooperative Soil Survey Page 1 of 3 Soil Map— eJd County, Colorado, Southern Part r MAP LEGEND MAP INFORMATION MATION Area of Interest (AOl) __ Spoil Area The soil surveys that comprise your AOI were mapped at Area of Interest (AOl ) 1 :24,000. Stony Spot Soils 65 Very Stony Spot Warning : Soil Map may not be valid at this scale. 1-1 Soil Map Unit Polygons ilk Wet Spot Enlargement of maps beyond the scale of mapping can cause ~I Soil Map Unit Lines misunderstanding of the detail of mapping and accuracy of soil Sail Map Unit Points Othe �` r line placement. The maps do not show the small areas of se Special Line Features contrasting soils that could have been shown at a more detailed Special Point Features scale_ Blowout Water Features Streams and Canals Please rely on the bar scale on each map sheet for map 1 ♦ Borrow Pit measurements . Transportation Clay Spot Source of Map : Natural Resources Conservation Service t R 1 Rails Web Soil Survey URL: ri Closed Depression c....7L-:;1 Interstate Highways Coordinate System : Web Mercator (EPSG: 3867) ravel Pit US Routes Maps from the Web Soil Survey are,based on the Web Mercator b. Gravelly Spot projection , which preserves direction and shape but distorts Major Roads distance and area . A projection that preserves area, such as the 0 Landfill Local Roads Albers equal-area conic projection , should be used if more A. Lava Flow accurate calculations of distance or area are required. Background Marsh or swamp _- Aerial Photography This product is generated from the USDA-MRCS certified data as of the version date(s) listed below. Mine or Quarry Soil Survey Area: Weld County, Colorado, Southern Part Miscellaneous Water Survey Area Data: Version 17, Sep 10, 2018 Perennial Water Soil map units are labeled (as space allows) for map scales Rock Outcrop 1 : 50,000 or larger_ Saline Spot Date(s) aerial images were photographed: ,Jul 17, 2015—Oct 2 , 2017 +4 4 Sandy Spot + The orthophoto or other base map on which the soil lines were • Severely Eroded Spot compiled and digitized probably differs from the background imagery displayed on these maps. As a result, some minor * Sinkhole shifting of map unit boundaries may be evident. Slide or Slip ay Sodic Spot USDA Natural Resources Web Soil Survey 4/24/2019 a Conservation Service National Cooperative Soil Survey Page 2 of 3 Soil Map—Weld County, Colorado, Southern Part Map Unit Legend Map Unit Symbol Map Unit Name Acres in A0i Percent of A01 46 Olney fine sandy loam, 0 to 1 0.5 10.9% percent slopes 50 Otero sandy loam, Q to 1 4.3 89. 1 % percent slopes Totals for Area of Interest 4.8 100.01% I LSDA Natural Resources Web Soil Survey 4/24/2019 agar Conservation Service National Cooperative Soil Survey Page 3 of 3 Map Unit Description: Otero sandy Iowan, 0 to 1 percent slopes---Weld County, Colorado, Southern Part Weld County, Colorado, Southern Part 50—Otero sandy loam , 0 to 1 percent slopes Map Unit Setting National map unit symbol: 362z Elevation: 4 , 700 to 5 ,250 feet Mean annual precipitation: 12 to 15 inches Mean annual air temperature: 48 to 52 degrees F Frost-free period: 130 to 180 days Farmland classification: Prime farmland if irrigated and the product of J (soil erodibility)bility) x C (climate factor) does not exceed 60 Map Unit Composition Otero and similar soils: 85 percent Minor components: 15 percent Estimates are based on observations, descriptions, and transects of the rrrapunit. Description of Otero Setting Landform: Plains Down-slope shape: Linear Across-slope shape: Linear a Parent material: Eolian deposits and/or mixed outwash Typical profile Elf - 0 to 12 inches: sandy loam H2 - 12 to 60 inches: fine sandy loam Properties and qualities Slope: 0 to 1 percent Depth to restrictive feature: More than 80 inches Natural drainage cuss: Well drained Runoff class: Very low Capacity of the most limiting layer to transmit water (Ksat): Moderately high to high (0.57 to 5 . 95 in/hr) Depth to water table: More than 80 inches Frequency of flooding: None Frequency of ponding: None Calcium carbonate, maximum in profile: 10 percent Salinity, maximum in profile: Nonsaline to slightly saline (0. 0 to 4 .0 m mhosfcm) Available water storage in profile: Moderate (about 7 .7 inches ) Interpretive groups Land capability classification (irrigated) : 3e Hydrologic Soil Group: A Ecological site: Sandy Plains ( R067BY024 O) Hydric soil rating: No us[usook Natural Resources Web Soil Survey 4/24/2019 a Conservation Service National Cooperative Soil Survey Page 1 of 2 Map Unit Description: Otero sandy loam, 0 to 1 percent slopes---Weld County, Colorado , Southern Part Minor Components Haverson Percent of map unit: 8 percent Hydric soil rating: No Kim Percent of map unit: 7 percent Hydric soil rating: No Data Source Information Soil Survey Area: Weld County, Colorado, Southern Part Survey Area Data : Version 17, Sep 10, 2018 USDA Natural Resources Web Soil Survey 4/24/2019 Conservation Service National Cooperative Soil Survey Page 2 of 2 Map Unit Description : Olney fine sandy loam, 0 to 1 percent slopes---Weld County, Colorado , Southern Part Weld County, Colorado , southern Part 46—Olney fine sandy loam , 0 to 1 percent slopes Map Unit Setting National map unit symbol: 362t Elevation: 4 , 600 to 5,200 feet Mean annual precipitation: 11 to 15 inches Mean annual air temperature : 46 to 54 degrees F Frost-free period: 125 to 175 days Farmland classification: Prime farmland if irrigated and the product of I (soil erodibility) x C (climate factor) does not exceed 60 Map Unit Composition Olney and similar soils: 85 percent Minor components: 15 percent Estimates are based on observations, descriptions, and transects of the map unit. t. Description of Olney Setting Landform: Plains Dorn-slope shape: Linear Across-slope shape: Linear Parent mater/al: Mixed deposit outwash Typical profile H1 - 0 to 10 inches: fine sandy loam H2 - 10 to 20 inches: sandy clay loam H3 - 20 to 25 inches: sandy clay loam H4 - 25 to 60 inches: fine sandy loam Properties and qualities Slope: 0 to 1 percent Depth to restrictive feature: More than 80 inches Natural drainage class: Well drained Runoff class: Low Capacity of the most limiting layer to transmit water (Ksat): Moderately high to high (0.57 to 2 . 00 in/hr) Depth to water table: More than 80 inches Frequency of flooding: None Frequency of ponding: None Calcium carbonate, maximum in profile: 15 percent Salinity, maximum in profile: Nonsaline to very slightly saline (0 . 0 to 2 . 0 rnmhoslcm ) Available water storage in profile: Moderate (about 7 . 0 inches ) Interpretive groups Land capability classification (irrigated): 3e Land capability classification (nonirrigated): 4c Hydrologic Soil Group: B USDA Natural Resources Web Soil Survey 4/24/2019 al Conservation Service National Cooperative Soil Survey Page 1 of 2 Map Unit Description : Olney fine sandy loam , 0 to 1 percent slopes- --Weld County, Colorado, Southern Part Ecological site: Sandy Plains (R0678Y024 O ) Hydric soil rating: No Minor Components Zigweid Percent of map unit: 8 percent Hydric soil rating: No Vona Percent of map unit: 7 percent Hydric soil rating: No Data Source Information Soil Survey Area : Weld County, Colorado, Southern Part Survey Area Data : Version 17 , Sep 10, 2018 USDA Natural Resources Web Soil Survey 4/24/2019 a Conservation Service National Cooperative Soil Survey Page 2 of 2 Hello