Laserfiche WebLink
' SOIL STOCKPILE SAMPLING <br />' A soil sample was collected on April 4, 1996 from the on-site stockpile it was transported <br /> chilled to Sherwood Labs on that date. The results are listed In Table 3 <br /> 1 TABLE 3 <br /> ANALYTICAL RESULTS SOIL STOCKPILE SEToluene <br />' Carmen Punta Property-Stockton <br /> Results reported m mg/Kg <br /> TRPH <br /> Sample Sampling TEPA- TPH.g Oil& Total BenzeEthyl- Xylenes <br /> [Number Date motor oil Grease Leadbenzene <br /> Soil Pile A 04/04/96 156 ND 43 90 6 NDND ND <br />' ND Not detected above the laboratory reporting lumt <br /> T'FLC for lead 1000 mg/Kg <br /> SUMMARY <br />' The last SJCPHD-EHD-required ground-water monitoring activity was conducted on April 2, <br /> 1996 Utilizing a Keck'3 interface probe, the W W Irwin, Inc staff geologist determined that <br /> Ile average, piezometric depth-to-water underlying the site was 28 19 feet bsg The water table <br /> underlying the site has risen 3 41 feet in the 4-month period since November 30, 1995 when the <br /> average depth to water was 31 60 feet bsg <br /> tThe soundings were converted using casing-top elevations previously established by RFA The <br /> elevation data were used to calculate the present ground-water flow direction and gradient by <br />' the three-point method The local flow direction on April 2, 1996 was calculated at N85°E <br /> along a virtually flat gradient of 0 0033 foot/foot (see the Ground-Water Gradient Map, Figure <br /> 3) The flow direction has shifted dust 2° to the north since November 30, 1995 when it was <br />' approximately N87°E along a gradient of 0 004 foot/foot <br /> Ground-water samples were collected from the three wells, transported on Ice under chain-of- <br /> custody, and received at Sherwood Labs on April 2, 1996 The samples were analyzed for oil <br /> & grease, diesel, gasoline, and BTEX constituents The reports of analytical results revealed <br /> wholly nondetectable concentrations of all constituents <br /> tThe monitoring wells were abandoned on April 4, 1996 under conditions of well-destruction <br /> permit no 008843 purchased from the SJCPHD-EHD on April 4, 1996 After well-covers were <br /> removed, each well was pressure-grouted (tremmied) with cement from total depth to the <br /> surface Abandonment activities were performed by V&W Drilling, Inc (C-57 License 710678) <br /> under the supervision of W W Irwin, Inc The work was witnessed by Harlin Knoll of the <br /> W W frmn, Inc <br /> Projects 33236 00&33236 01 <br /> Apnl 1996 7 <br />