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n <br />Sampling was performed in accordance with procedures described in the Field Investigation <br />Work Plan (reference Anyendix A). The investigation Work Plan is based on the EPA one time <br />sampling and analysis event publication. Analytical results from samples taken were organized <br />by constituents (per property) and a statistical analysis performed (based on normal distribution <br />assumptions) to compare the upper limit value of an 80 percent confidence interval to regulatory <br />threshold values established by Title 22, California Code of Regulations (CCR), for each <br />constituent. The California hazardous threshold values used for California Administrative <br />Manual (CAM) 17 Metals were the Total Threshold Limit Concentration (TTLC) and Soluble <br />Threshold Limit Concentration Values (STLC) per Title 22 CCR. The table below lists the types <br />of analysis performed and the types of samples analyzed. A <br />ppgridix F contains laboratory <br />analytical result reports and chain-of-custody/laboratory request forms. <br />EPA Test Method <br />Parameter/Characteristic <br />Sample <br />Type <br />EPA test method <br />8015M, (C6 -C44 <br />Total Petroleum Hydrocarbons <br />Discrete <br />carbon chain <br />identification <br />EPA test method <br />Cd, Cr, Ni, Pb, and Zn (CAM 5 <br />Discrete <br />6010/7471 <br />metals) <br />EPA test method <br />CAM 17 metals <br />Discrete <br />6010/7471 <br />EPA test method <br />Semi -volatile organic <br />Discrete <br />8270C <br />compounds (PAHs) <br />EPA test method <br />Volatile organic compounds <br />Discrete <br />8260B <br />EPA test method <br />Organochlorine pesticides and <br />8082 <br />polychlorinated biphenyls <br />Discrete <br />(PCBs) <br />EPA test method <br />Dioxins/furans <br />Discrete <br />8290 <br />EPA test method <br />(WET) (SPLP/STLC) <br />Discrete <br />6010/7471 <br />The following tables extracted from Appendix G contain the results of metals testing and <br />statistical analysis for lead for each of the properties and for the overall Site. An analysis <br />for each of the analytes is located in the tables that make up Appendix G. <br />