ARCHIVED REPORTS XR0001041 - Laserfiche WebLink

Home Browse Search

gccalTeGkxtcs!►cG Page 5 Dual Phase Extraction Pilot Test Report Project No,723 2 November 12,2004 ' • Total Organic Carbon by EPA method 9060 • Chromium by EPA method 6010B ' • Iron by EPA method 6010B A Chain of Custody was completed for all samples collected and tracked to ensure sample ' integrity The soil laboratory data are included in Appendix C and summarized in Table 1 Summary of Pre-Test Analytical Data (Appendix A) A summary of the other soil analytical data is attached in Table 3, also in Appendix A 3.2 Groundwater Groundwater samples from well MW-9 were taken by GTI staff on February 5, 2004, following the installation of the new wells The well was purged of three well volumes of ' stagnant water using a dedicated Waterra pumping system After purging was complete, a water sample was collected from the Waterra tube Care was taken to minimize sample agitation Once the sample container was filled and capped, the bottle was inverted, tapped and checked for headspace bubbles The sample container was identified and labeled with a unique designation, inserted into a foam holder and placed into an ice chest cooled to 4°C for transport to the laboratory All water purged from each monitoring well and not used as a sample was placed in a 55, gallon DOT-approved container These drums were properly labeled and stored on site until their proper disposition can be arranged The groundwater samples were submitted to Sherwood Labs (Department of Health Services ' Certification No 1400) of Hilmar, California, for analysis The samples were analyzed for • Benzene, Toluene,Ethyl Benzene and Xylene (BTEX) by EPA method 8020 • Total Petroleum Hydrocarbons as Gasoline (TPH-G)by EPA method 5030/8015(M) ' Additionaloundwater samples were also submitted to A & L West �' p ern Agricultural ' Laboratories (Department of Health Services Certification No 1657) of Modesto, California, for analysis The samples were analyzed for • PH, EC ' • General Mineral [Alkalinity (CO3, HCO3), Ca, Mg, K, Na, Fe, Mn, Cu, Zn, SO4, Cl, TDS] ' A Chain of Custody was completed for all groundwater samples collected and tracked to ensure sample integrity The groundwater laboratory data are included in Appendix C and summarized in Table 1 Summary of Pre-Test Analytical Data (Appendix A)