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Home My WebLink AboutOWTS Report GARFIELD COUNTY OWTS REPORT 6208 COUNTY ROAD 309 PARACHUTE, COLORADO May 2021 Prepared by 118 West Sixth Street, Suite 200 Glenwood Springs, CO 81601 970.945.1004 970.945.5948 fax 2 GARFIELD COUNTY OWTS REPORT 6208 COUNTY ROAD 309 PARACHUTE, COLORADO REVIEWED BY 05/11/2021 3 TABLE OF CONTENTS 1.0 Introduction 5 2.0 Preliminary Investigation 5 2.1 Property Information 5 2.2 Public Health Agency Records 5 2.3 Topography 5 2.4 Soil Data 6 2.5 Location of Physical Features 6 2.6 Additional Information 6 2.7 Landscape Position 6 2.8 Natural and Cultural Features 6 2.9 Current and Historic Land Use 6 3.0 Detailed Soil Investigation 6 3.1 Visual Evaluation 7 3.2 Tactile Evaluation 7 4.0 Recommendations 8 4 LIST IN APPENDIX Appendix Drawing C.1.001 Drawing C.1.002 NRCS Soils Map NRCS Absorption Field Soils Data TP-1 Trench Photo TP-1 Trench Photo TP-2 Trench Photo TP-2 Trench Photo SGM Soil Observation Logs SGM Soil Texture by Feel 5 1.0 Introduction The subject property has an existing individual septic disposal system (ISDS). Review of the property indicates the existing leach field (soil treatment area) has failed, causing the existing septic tank to overflow. The existing system has been taken out of use and a porta-potty placed on site for use until the system is repaired. The existing septic tank has been pumped and removed prior to issuance of a permit in accordance with approval from the County’s Department of Environmental Health Administrator. The proposed design follows Garfield County’s Regulation 43 for installation of a new system to replace the existing failed system. This report describes results of a preliminary investigation, reconnaissance, and detailed soil evaluation to support design of the Onsite Wastewater Treatment System (OWTS) repair for the property located at 6208 County Road 309, Parachute, Colorado. SGM personnel contributing to this report are: · Terry Bendetti - PE/CPOW Certified Competent Technician/NAWT Certified Designer 2.0 Preliminary Investigation 2.1 Property Information Physical Address: 6208 County Road 309, Parachute, Colorad. Legal Description: Section 31 Township:6 Range: 94 E1/2SESW. Account No. R270096, Parcel 217531300025. Existing Structures: One existing farm/ranch residential wood frame structure with the following: · Constructed in 1935. · 1,551 gross living area. · Two bedrooms. · One bath. · Two story. Domestic Water: Provided by a spring to the south of the property. The spring is located greater than the minimum setback requirements found in Table 7-1 of the County’s Regulation No. 43. 2.2 Public Health Agency Records Search of Garfield County’s Public Records did not find an existing permit for this residence. 2.3 Topography Topography in the vicinity of the OWTS slopes towards the northwest at grades of between 3.0 to 5.0 percent. The slope shape is CL (Concave Linear) towards the northwest. 6 2.4 Soil Data According to the Natural Resources Conservation Service Web Soil Survey the soils are classified as map unit 56, Potts loam, having 6 to 12 percent slopes. The grades agree with field observations. Pots loam has a very limited rating for septic tank absorption fields due to the slow movement of water. 2.5 Location of Physical Features Physical features on the subject property that will require minimum horizontal setbacks are shown in the following Table. All distances are in feet. Spring Structure with Footing Drains Property Lines Intermittent Irrigation Cut Bank Septic Tank Septic Tank 50 5 10 10 10 -- Effluent Line 50 N/A 10 10 10 -- STA 100 20 10 25 25 5 Minimum required setbacks for all physical features have been met or exceeded with design of the OWTS repair. 2.6 Additional Information a. Easements: Williams Production has an access easement adjacent to the west property boundary as shown on sheet C.1.001. b. Floodplain Maps: According to FEMA (Federal Emergency Management Agency), there is no flood mapping for the area of concern where the OWTS will be replaced. 2.7 Landscape Position The landscape position for the STA is considered summit and will not be impacted by stormwater drainage. The slope shape is concave – linear (CL) towards the northwest property corner. 2.8 Natural and Cultural Features No natural or cultural features were identified in the site reconnaissance. 2.9 Current and Historic Land Use The subject project is in Garfield County’s Rural zone district, which is for Agricultural and other uses. Current and historic land use has been agricultural, its future use is expected to also be agricultural. 3.0 Detailed Soil Investigation A detailed soil investigation to determine the depth to the limiting layer and properly classify the soil type was conducted using Colorado Professionals in Onsite Wastewater (CPOW) Soil and Site 7 Evaluation methodology. Visual evaluation of two soil profile test pits were conducted in the field and textural evaluation of samples collected from each test pit were conducted at SGM’s Office. The test pits were excavated adjacent to the proposed location for the STA, see sheet C.1.001 for locations. Visual evaluation of both test pits was conducted under adequate light conditions, with the soil being in an unfrozen state. 3.1 Visual Evaluation The Client’s Contractor excavated two soil profile test pits, TP-1 and TP-2, adjacent to where the STA will be located prior to SGM being on site. Both test pits were excavated to an approximate depth of 8 feet, with no groundwater nor bedrock being encountered, nor were there visible signs of water when evaluated by SGM. Both test pits exhibited topsoil with a root zone for the first 18 inches and two layer horizons from the bottom of the topsoil zone to the bottom of each pit. Rocks with an approximate diameter of less than 3-inches were beginning to be visible between 18- to 30-inches and larger rocks with a diameter of >3-inches < 18-inches between the depths of 30- to 96-inches. However, the soil’s shape, grade and consistence for both horizons did not change. Soil samples from each pit were collected at the 4 foot depth and taken to SGM’s Office for textural analysis. Soil observation logs and photos can be found in the Appendix. All measurements are from ground surface. 3.2 Tactile Evaluation SGM conducted a Soil Texture by Feel test on the soil samples collected from each test pit per CPOW’s methodology. Gravels were present in both samples, but at a percentage less than 35%. Therefore, Table 10- 1, Section 43.10 of the Garfield County OWTS regulations was used to determine the long term application rate (LTAR) for the soil type classification. The soil texture by feel method using the CPOW Soil Texture Flow Chart was conducted on each sample. Results are shown in the following table. SAMPLE Depth from Ground Surface (ft) Does Soil Form a Ball (yes/no) Does Soil Form a Ribbon (yes/no) *Type of Ribbon Formed (Weak, Moderate, Strong) How Does the Soil Feel (Gritty/Smooth/Neither) TP-1 4.0 Yes Yes Strong Smooth TP-2 4.0 Yes Yes Strong Smooth *Weak < 1 inch; Moderate 1-2 inches; Strong > 2 inches. From the results shown in the above Table, the limiting layer would have a USDA soil classification of Silty Clay, soil type 4 or 4A. To determine the proper soil type, 4 or 4A, the USDA soil structure type and grade were used. The following Table shows the soil’s USDA structure type and grade determined for each sample. 8 SAMPLE USDA Soil Structure Type USDA Soil Structure Grade TP-1 Blocky Moderate TP-2 Blocky Moderate According to Table 10-1, section 43.10 of the Garfield County OWTS regulations, both soil types, 4 and 4A, can have a blocky USDA soil structure type, but only soil type 4 can have a moderate USDA soil structure grade. As such, the limiting layer soil type is classified as soil type 4, having a LTAR of 0.20 for treatment level 1 (TL1). The information provided in subsection 2.4 above supports this soil type classification. SGM’s worksheets for the Soil Observation Logs, Soil Texture by Feel and STA LTAR by Soil Texture, Soil Structure and Treatment Levels can be found in the Appendix. 4.0 Recommendations An OWTS for the residence with a septic tank and gravity effluent application system can be constructed at this site. The effluent from the residence will be directed to a new septic tank and STA. The site of the proposed OWTS soil treatment area will be north of the residence. The septic tank will be installed at the existing septic tank location, which exceeds the minimum required 5 foot setback between a residence with a crawl space and a septic tank. The OWTS STA site elevation is approximately 5,480 feet above sea level (NAVD 88). Sewer Pipe: Sewer pipes shall be 4-inch SDR-35 PVC pipe installed with a minimum slope of 2%. Joints shall be solvent welded. Cleanouts are required 1) within 5 feet of the existing building), 2) at spacing not to exceed 50 feet, and 3) upslope of two or more bends closer than 10 feet. All 90 degree bends shall be constructed using two 45 degree fittings. The pipe shall be properly bedded per the typical trench detail presented on sheet C.1.002. Septic Tanks: One new septic tank will be required. The septic tank will be a 1,000-gallon, two compartment tank that will receive effluent directly from the existing residence. The tank must be on the Colorado Department of Public Health and Environment’s accepted septic tank list. Effluent will be conveyed through 4-inch piping to the soil treatment area using gravity. The tanks and lids shall conform to current County OWTS regulations. The tanks shall be installed with insulated, watertight access risers having lids that can be secured. Risers shall meet the tank manufacturer’s requirements for type and installation. The effluent filter handle shall extend to within twelve inches of the lid. The septic tank shall: 1) be located down gradient of the home, 2) have a covering of no more than 4-feet in depth, and 3) be at a location accessible for pumping and maintenance at the tank. The installer must coordinate with the Owner as to the elevation of the stub out. A septic tank having a thicker cover than 4-feet will not be allowed. Distribution Box: The distribution box shall be centered as shown on sheet C.1.001 in a manner to distribute effluent equally to the beds. The Engineer should be contacted if alignments or locations change in order to verify regulation requirements are maintained. The box, as shown, should be capable of one inlet pipe having an insertion point 1-inch above outlet openings and 3 outlet openings. 9 Soil Treatment Area: The soil treatment area was sized using criteria found in section 43.10 of Regulation 43 for a two bedroom residential home using a bed for the soil treatment area, effluent application by gravity and chambers for the distribution media. The following table summarizes sizing of the STA. No. Bedrooms Daily Design Flow (gpd) LTAR Method of Application Adjustment Factor Distribution Media Adjustment Factor STA Size (sf) No. Chambers 2 300 0.2 1.2 0.7 1,260 105 The STA shall be excavated as field conditions require using the following guidelines. 1. Two beds with 52 infiltrators per bed shall be utilized, with one bed having an extra infiltrator. 2. Beds shall be no wider than 12-feet. 3. Bed lengths shall be no greater than 52-feet. 4. A minimum of 6-feet, measured sidewall to sidewall, shall separate beds. 5. One outside bed shall have an additional infiltrator connected as shown on sheet C.1.001. 6. The infiltrative surface shall be no greater than 4-feet from the surface. 7. Bed floor shall be level. 8. Chambers shall be placed per the manufacturer’s directions. Chambers shall have a minimum square footage area of 10.8 square feet per regulation requirement 43.13. The STA shall have a final soil cover as described on sheet C.1.002. This may mean that the STA cover will need to be 16+-inches when initially placed to allow for settlement over the freeze-thaw of a winter season. The surface of the STA shall be seeded after installation of the system. A native, upland seed mix should be used. These mixes do not require irrigation and develop a growth 10 to 15 inches high. No automatic sprinkler system shall be installed over the STA. Vehicular traffic and livestock shall be kept off of the STA. No landscaping, impervious surfaces or plastic sheeting can be installed over the STA, which will reduce performance of the STA. 10 Appendix Drawing C.1.001 Drawing C.1.002 NRCS Soils Map NRCS Absorption Field Soils Data TP-1 Trench Photo TP-1 Trench Photo TP-2 Trench Photo TP-2 Trench Photo SGM Soil Observation Logs SGM Soil Texture by Feel Graphic ScaleIn Feet: 1" = 20'0102040Title:OWTS Plan ViewRevision#Dwg No.6208 County Road 309 Garfield County, ColoradoJob No.Drawn by:Date:File:PE:QC:----TLB5/8/21TLBOWTS-BMJP118 West Sixth Street, Suite 200 Glenwood Springs, CO 81601 970.945.1004 www.sgm-inc.com Date By:C.1.001 2Of :Preliminary Not For ConstructionProject Milestone:05/11/2021 ····ESTABLISH VEGETATIVE COVERNATIVE BACKFILL12" COVER OVER INFILTRATORSLEVEL FLOORGraphic ScaleIn Feet: 1" = 36'0183672Title:OWTS DetailsRevision#Dwg No.6208 County Road 309 Garfield County, ColoradoJob No.Drawn by:Date:File:PE:QC:----TLB5/8/21TLBOWTS-BMJP118 West Sixth Street, Suite 200 Glenwood Springs, CO 81601 970.945.1004 www.sgm-inc.com Date By:C.1.002 2Of :Preliminary Not For ConstructionProject Milestone:QUICK4 STANDARD MULTIPORT END CAPINFILTRATOR SYSTEMS INC.QUICK4 STANDARD CHAMBERINSPECTION PORT(EFFECTIVE)34"12"05/11/2021 NRCS Soils Map Soil Map—Rifle Area, Colorado, Parts of Garfield and Mesa Counties (Farris) Natural Resources Conservation Service Web Soil Survey National Cooperative Soil Survey 5/7/2021 Page 1 of 34373900437399043740804374170437426043743504374440437390043739904374080437417043742604374350247700247790247880247970248060248150248240248330248420248510 247700 247790 247880 247970 248060 248150 248240 248330 248420 248510 39° 28' 57'' N 107° 56' 1'' W39° 28' 57'' N107° 55' 24'' W39° 28' 38'' N 107° 56' 1'' W39° 28' 38'' N 107° 55' 24'' WN Map projection: Web Mercator Corner coordinates: WGS84 Edge tics: UTM Zone 13N WGS84 0 150 300 600 900 Feet 0 50 100 200 300 Meters Map Scale: 1:3,990 if printed on A landscape (11" x 8.5") sheet. Soil Map may not be valid at this scale. MAP LEGEND MAP INFORMATION Area of Interest (AOI) Area of Interest (AOI) Soils Soil Map Unit Polygons Soil Map Unit Lines Soil Map Unit Points Special Point Features Blowout Borrow Pit Clay Spot Closed Depression Gravel Pit Gravelly Spot Landfill Lava Flow Marsh or swamp Mine or Quarry Miscellaneous Water Perennial Water Rock Outcrop Saline Spot Sandy Spot Severely Eroded Spot Sinkhole Slide or Slip Sodic Spot Spoil Area Stony Spot Very Stony Spot Wet Spot Other Special Line Features Water Features Streams and Canals Transportation Rails Interstate Highways US Routes Major Roads Local Roads Background Aerial Photography The soil surveys that comprise your AOI were mapped at 1:24,000. Warning: Soil Map may not be valid at this scale. Enlargement of maps beyond the scale of mapping can cause misunderstanding of the detail of mapping and accuracy of soil line placement. The maps do not show the small areas of contrasting soils that could have been shown at a more detailed scale. Please rely on the bar scale on each map sheet for map measurements. Source of Map: Natural Resources Conservation Service Web Soil Survey URL: Coordinate System: Web Mercator (EPSG:3857) Maps from the Web Soil Survey are based on the Web Mercator projection, which preserves direction and shape but distorts distance and area. A projection that preserves area, such as the Albers equal-area conic projection, should be used if more accurate calculations of distance or area are required. This product is generated from the USDA-NRCS certified data as of the version date(s) listed below. Soil Survey Area: Rifle Area, Colorado, Parts of Garfield and Mesa Counties Survey Area Data: Version 13, Jun 5, 2020 Soil map units are labeled (as space allows) for map scales 1:50,000 or larger. Date(s) aerial images were photographed: Dec 31, 2009—Oct 12, 2017 The orthophoto or other base map on which the soil lines were compiled and digitized probably differs from the background imagery displayed on these maps. As a result, some minor shifting of map unit boundaries may be evident. Soil Map—Rifle Area, Colorado, Parts of Garfield and Mesa Counties (Farris) Natural Resources Conservation Service Web Soil Survey National Cooperative Soil Survey 5/7/2021 Page 2 of 3 Map Unit Legend Map Unit Symbol Map Unit Name Acres in AOI Percent of AOI 56 Potts loam, 6 to 12 percent slopes 55.9 66.8% 58 Potts-Ildefonso complex, 12 to 25 percent slopes 16.9 20.2% 59 Potts-Ildefonso complex, 25 to 45 percent slopes 10.9 13.0% Totals for Area of Interest 83.7 100.0% Soil Map—Rifle Area, Colorado, Parts of Garfield and Mesa Counties Farris Natural Resources Conservation Service Web Soil Survey National Cooperative Soil Survey 5/7/2021 Page 3 of 3 NRCS Absorption Field Soils Data Septic Tank Absorption Fields—Rifle Area, Colorado, Parts of Garfield and Mesa Counties (Farris) Natural Resources Conservation Service Web Soil Survey National Cooperative Soil Survey 5/7/2021 Page 1 of 54373900437399043740804374170437426043743504374440437390043739904374080437417043742604374350247700247790247880247970248060248150248240248330248420248510 247700 247790 247880 247970 248060 248150 248240 248330 248420 248510 39° 28' 57'' N 107° 56' 1'' W39° 28' 57'' N107° 55' 24'' W39° 28' 38'' N 107° 56' 1'' W39° 28' 38'' N 107° 55' 24'' WN Map projection: Web Mercator Corner coordinates: WGS84 Edge tics: UTM Zone 13N WGS84 0 150 300 600 900 Feet 0 50 100 200 300 Meters Map Scale: 1:3,990 if printed on A landscape (11" x 8.5") sheet. Soil Map may not be valid at this scale. MAP LEGEND MAP INFORMATION Area of Interest (AOI) Area of Interest (AOI) Soils Soil Rating Polygons Very limited Somewhat limited Not limited Not rated or not available Soil Rating Lines Very limited Somewhat limited Not limited Not rated or not available Soil Rating Points Very limited Somewhat limited Not limited Not rated or not available Water Features Streams and Canals Transportation Rails Interstate Highways US Routes Major Roads Local Roads Background Aerial Photography The soil surveys that comprise your AOI were mapped at 1:24,000. Warning: Soil Map may not be valid at this scale. Enlargement of maps beyond the scale of mapping can cause misunderstanding of the detail of mapping and accuracy of soil line placement. The maps do not show the small areas of contrasting soils that could have been shown at a more detailed scale. Please rely on the bar scale on each map sheet for map measurements. Source of Map: Natural Resources Conservation Service Web Soil Survey URL: Coordinate System: Web Mercator (EPSG:3857) Maps from the Web Soil Survey are based on the Web Mercator projection, which preserves direction and shape but distorts distance and area. A projection that preserves area, such as the Albers equal-area conic projection, should be used if more accurate calculations of distance or area are required. This product is generated from the USDA-NRCS certified data as of the version date(s) listed below. Soil Survey Area: Rifle Area, Colorado, Parts of Garfield and Mesa Counties Survey Area Data: Version 13, Jun 5, 2020 Soil map units are labeled (as space allows) for map scales 1:50,000 or larger. Date(s) aerial images were photographed: Dec 31, 2009—Oct 12, 2017 The orthophoto or other base map on which the soil lines were compiled and digitized probably differs from the background imagery displayed on these maps. As a result, some minor shifting of map unit boundaries may be evident. Septic Tank Absorption Fields—Rifle Area, Colorado, Parts of Garfield and Mesa Counties (Farris) Natural Resources Conservation Service Web Soil Survey National Cooperative Soil Survey 5/7/2021 Page 2 of 5 Septic Tank Absorption Fields Map unit symbol Map unit name Rating Component name (percent) Rating reasons (numeric values) Acres in AOI Percent of AOI 56 Potts loam, 6 to 12 percent slopes Very limited Potts (85%)Slow water movement (1.00) 55.9 66.8% Slope (0.04) 58 Potts-Ildefonso complex, 12 to 25 percent slopes Very limited Potts (60%)Slow water movement (1.00) 16.9 20.2% Slope (1.00) Ildefonso (30%)Slope (1.00) Large stones (1.00) 59 Potts-Ildefonso complex, 25 to 45 percent slopes Very limited Potts (60%)Slope (1.00)10.9 13.0% Slow water movement (1.00) Ildefonso (30%)Slope (1.00) Large stones (1.00) Totals for Area of Interest 83.7 100.0% Rating Acres in AOI Percent of AOI Very limited 83.7 100.0% Totals for Area of Interest 83.7 100.0% Septic Tank Absorption Fields—Rifle Area, Colorado, Parts of Garfield and Mesa Counties Farris Natural Resources Conservation Service Web Soil Survey National Cooperative Soil Survey 5/7/2021 Page 3 of 5 Description Septic tank absorption fields are areas in which effluent from a septic tank is distributed into the soil through subsurface tiles or perforated pipe. Only that part of the soil between depths of 24 and 60 inches is evaluated. The ratings are based on the soil properties that affect absorption of the effluent, construction and maintenance of the system, and public health. Saturated hydraulic conductivity (Ksat), depth to a water table, ponding, depth to bedrock or a cemented pan, and flooding affect absorption of the effluent. Stones and boulders, ice, and bedrock or a cemented pan interfere with installation. Subsidence interferes with installation and maintenance. Excessive slope may cause lateral seepage and surfacing of the effluent in downslope areas. Some soils are underlain by loose sand and gravel or fractured bedrock at a depth of less than 4 feet below the distribution lines. In these soils the absorption field may not adequately filter the effluent, particularly when the system is new. As a result, the ground water may become contaminated. The ratings are both verbal and numerical. Rating class terms indicate the extent to which the soils are limited by all of the soil features that affect the specified use. "Not limited" indicates that the soil has features that are very favorable for the specified use. Good performance and very low maintenance can be expected. "Somewhat limited" indicates that the soil has features that are moderately favorable for the specified use. The limitations can be overcome or minimized by special planning, design, or installation. Fair performance and moderate maintenance can be expected. "Very limited" indicates that the soil has one or more features that are unfavorable for the specified use. The limitations generally cannot be overcome without major soil reclamation, special design, or expensive installation procedures. Poor performance and high maintenance can be expected. Numerical ratings indicate the severity of individual limitations. The ratings are shown as decimal fractions ranging from 0.01 to 1.00. They indicate gradations between the point at which a soil feature has the greatest negative impact on the use (1.00) and the point at which the soil feature is not a limitation (0.00). The map unit components listed for each map unit in the accompanying Summary by Map Unit table in Web Soil Survey or the Aggregation Report in Soil Data Viewer are determined by the aggregation method chosen. An aggregated rating class is shown for each map unit. The components listed for each map unit are only those that have the same rating class as listed for the map unit. The percent composition of each component in a particular map unit is presented to help the user better understand the percentage of each map unit that has the rating presented. Other components with different ratings may be present in each map unit. The ratings for all components, regardless of the map unit aggregated rating, can be viewed by generating the equivalent report from the Soil Reports tab in Web Soil Survey or from the Soil Data Mart site. Onsite investigation may be needed to validate these interpretations and to confirm the identity of the soil on a given site. Septic Tank Absorption Fields—Rifle Area, Colorado, Parts of Garfield and Mesa Counties Farris Natural Resources Conservation Service Web Soil Survey National Cooperative Soil Survey 5/7/2021 Page 4 of 5 Rating Options Aggregation Method: Dominant Condition Aggregation is the process by which a set of component attribute values is reduced to a single value that represents the map unit as a whole. A map unit is typically composed of one or more "components". A component is either some type of soil or some nonsoil entity, e.g., rock outcrop. For the attribute being aggregated, the first step of the aggregation process is to derive one attribute value for each of a map unit's components. From this set of component attributes, the next step of the aggregation process derives a single value that represents the map unit as a whole. Once a single value for each map unit is derived, a thematic map for soil map units can be rendered. Aggregation must be done because, on any soil map, map units are delineated but components are not. For each of a map unit's components, a corresponding percent composition is recorded. A percent composition of 60 indicates that the corresponding component typically makes up approximately 60% of the map unit. Percent composition is a critical factor in some, but not all, aggregation methods. The aggregation method "Dominant Condition" first groups like attribute values for the components in a map unit. For each group, percent composition is set to the sum of the percent composition of all components participating in that group. These groups now represent "conditions" rather than components. The attribute value associated with the group with the highest cumulative percent composition is returned. If more than one group shares the highest cumulative percent composition, the corresponding "tie-break" rule determines which value should be returned. The "tie-break" rule indicates whether the lower or higher group value should be returned in the case of a percent composition tie. The result returned by this aggregation method represents the dominant condition throughout the map unit only when no tie has occurred. Component Percent Cutoff: None Specified Components whose percent composition is below the cutoff value will not be considered. If no cutoff value is specified, all components in the database will be considered. The data for some contrasting soils of minor extent may not be in the database, and therefore are not considered. Tie-break Rule: Higher The tie-break rule indicates which value should be selected from a set of multiple candidate values, or which value should be selected in the event of a percent composition tie. Septic Tank Absorption Fields—Rifle Area, Colorado, Parts of Garfield and Mesa Counties Farris Natural Resources Conservation Service Web Soil Survey National Cooperative Soil Survey 5/7/2021 Page 5 of 5 TP-1 Trench Photos TP-2 Trench Photos SGM Soil Observation Logs SSGM eea 1Ecr· Fo. c c i S t) lJ 7 S-i WQRK ITEM • la c fi'/e )'o: I t°oJAl 'IHEEI NQ / OE ' / CAI Cl II AIED ex · PRQi #· QATF . slta /2 I J ::,. L / j I .. . - - -----1--------;---,..----,.-I V ~ <"" . l ,..,.. ' I"'. 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