SU0005025 SSNL - Laserfiche WebLink

Home Browse Search

� u September 9,2005 NOA Project Number: E05039B L 4.5 Well Water Sample Collection,Handling, and Transportation The sample for nitrate was collected in a sterile plastic container,the sample for DBCP was collected in two sterile glass vials. The samples were then transported on ice and remained under chain of custody to Precision Enviro-Tech,Stockton. 4.6 Chain of Custody The Chain of Custody document has been included in the appendix of this report. 5.0 SOIL PROFILE AND GEOLOGIC INFORMATION The Site is depicted on the USGS Preliminary Geologic Map of San Francisco - San Jose Quadrangle as within the Quaternary Riverbank Formation. Quaternary Riverbank Formation- weathered reddish gravel, sand, and silt forming clearly recognizable alluvial terraces and fans (Plate 7). The surface and near surface soils located at the Site are reported by the San Joaquin County Soil Survey L to be composed of,Madera sandy loam, 0-2% slopes (Plate 8) (USDA, 1992). Table 3 presents some selected properties of these soils: Table 3. ` San Joaquin County Soil Survey Selected Soil Properties of On-Site Soils. Soil Name Depth Unified Soil Classification Salinity Soil Perme- Septic tank and Map (in) mmhos/cm Reaction ability absorption Symbol pH (in/hr) fields L Chloak 0-19 Coarse sandy loam,SM <2 5.6-6.5 2.0-6.0 Sever:peres coarse 1944 Sandy day loam,sandy loam, <2 6.1-7.3 0.2-.60 slowly sandy loam, SC-SM SC 0-2% 4455 Fine sandy loam,SM <2 6.6-7.3 2.0-6.0 slopes,127 55-64 Loamy coarse sand,SM <2 6.6-7.3 6.0-20 Madera 0-19: Sandy loam;SM <2 5.6-7.3 2.0-6.0 Severe: J sandy loam, 19-23: Sandy clay loam;SC <2 6.1 -7.3 0.2-0.6 cemented V` 0-2% 23-29: Clay,clay loam;CL,CH,SC <2 6.6-8.4 <0.06 pan,peres sl29-60: Indurated <2 slowly. fNote:The table descriptions do not necessarily reflect site-specific sod properties. ` 5.1 Soil Boring Locations iA total of four soil borings were advanced on the Site, all to a depth of approximately three feet. L 6 .*44 L