FIELD DOCUMENTS - Laserfiche WebLink

Home Browse Search

• Preliminary Environmental Assessment Report Pittman Elementary School,Stockton,CA December 10,2003 Page 8 analyzed for hexavalent chromium by EPA Method 7196A upon receipt of the total chromium analytical results. The second surface sample was analyzed for organochlorine pesticides by EPA Method 8081A and CAM 17 Metals by EPA Methods 6010B and 7471A. The eight discrete background surface samples were analyzed for CAM 17 Metals by EPA Methods 6010B and 7471A. In addition, an equipment blank sample was collected and analyzed for CAM 17 Metals by EPA Methods 6010B and 7471A and organochlorine pesticides by EPA Method 8081 A. Laboratory analytical methods for the constituents of interest are presented in Table 1, below. Severn Trent Laboratories, Inc., a California-certified laboratory, performed all analyses. f(aIL4.5 Table 1 —Laborator Anal tical Methods awn Areaocation Sample Matrix Number of Discrete Constituents Method De th Sam les Anal ses 0-0.5 feet bgs soil IS 15 Or anochlorine Pesticides 8081A 5 CAM 17 Metals 6010B/7471A 4 Arsenic 6010B ion per 1-acre 4 Hexavalent Chromium 7196A acres) 2-2.5 feet bgs soil 15 1 Or anochlonne Pesticides 8081A 2 CAM 17 Metals 601013/7471A 2 Arsenic 6010B 2 Hexavalent Chromium 7196A Second sample 0-0.5 and soil I shallow, I Organochlorine Pesticides 8081A 2-2.5 feet bgs l dee eld I CAM 17 Metals 6010B/747I A Background samples 0-0.5 feet bgs soil 8 8 CAM 17 Metals 6010B/7471A 8 Hexavalent Chromium 7196A Equipment blank water 1 I Or anochlorine Pesticides 808IA 1 CAM 17 Metals 601013/7471 A 6.2 STRUCTURE DRIPLINE SAMPLES Soil samples were collected from four locations around each building, except for the rehabilitation center, one house, and one garage. Soil samples were collected from seven locations around the rehab center located along E. Park Street. Soil samples were collected from five locations around House 1 (Figure 4, Appendix A). Soil samples were collected from three locations around Garage 1 (Figure 4, Appendix A). In addition, paint chip samples were collected at three locations around the warehouse buildings. All surface soil samples were analyzed for lead by EPA Method 6010B. Thirty subsurface soil samples were analyzed for lead by EPA Method 6010B based on the surface sample analytical results. The three paint chip samples were analyzed for lead by EPA Method 3050-7420. In addition, an equipment blank (rinsate) sample for the soil sampling equipment was collected and analyzed for lead by EPA Method 601013. Laboratory analytical methods for the constituents of interest are presented in Table 2, on the next page. Severn Trent Laboratories, Inc., a California-certified laboratory, performed the soil analyses. LA Testing, a California-certified laboratory,performed the paint chip analyses 1 +.� CONDO