ARCHIVED REPORTS_XR0010449 - Laserfiche WebLink

Home Browse Search

Geological Technics Inc Page 5 g g Ripon Milling Inc I • Report-Groundwater Investigation Project No 253 2 July 31, 1995 A chain of custody document, listing all samples collected, accompanied the samples from field to laboratory, thereby providing a means to track their movement and insure their integrity 1.3 Soil and Groundwater Sample Analyses Based on field screening observations three soil samples including one from the capillary fringe was submitted to Sherwood Laboratories of Hilmar (State Certified Laboratory #1400) and analyzed for benzene, toluene, ethylbenzene and xylene (BTEX by EPA method 8020), and diesel range petroleum hydrocarbons analyses I (TPH-Diesel by EPA method 3540/8015m) Table 1 summarizes the soil sample laboratory data and detection limits The laboratory analytical reports are attached in Appendix B ITable 1 Soil Sample Analyses March 7, 1995 Boring depth Benzene Toluene Ethyl Xylene TPH- TPH-µg/kg µg/kg benzene µg/kg Gasoline Diesel Vg/kg mg/kg mg/kg . MW-1 16-165' ND(<0 3) ND(<0 3) ND (<0 3) ND(<0 3) ND (<1) ND(<5) I MW-1 21-215' ND(<0 3) ND(<0 3) ND (<0 3) ND(<0 3) ND (<1) ND(<5) MW-1 26-26 5' 1 ND(<0 3) 1 ND(<0 3) ND (<0 3) ND(<0 3) ND (<1) ND(<5) ND=non detect (detection limits are in parentheses) Water samples were tested at Sherwood for BTEX using EPA method 602 and TPH- Diesel using EPA method 3510/8015(m) Table 2 summarizes the groundwater sample laboratory data and detection limits The laboratory analytical reports are attached in Appendix B Table 2 Groundwater Sample Analyses Well Date Benzene Toluene Ethyl Xylene TPH- TPH- µg/1 µg/1 benzene µg/l Gasoline Diesel µ /l µ /l µ /l MW-1 03/13/95 2 ND(<0 3) ND(<0 3) 2 ND(<50) ND (<50) MW-1 i 06/15/95 1 06 2 ND(<0 3) 1 ND(<50) ND(<50) ND=non detect (detection limits are in parentheses) I