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• Semi-volatile organic compounds (SVOCs) including polycyclic/polynuclear aromatic hydrocarbons(PAHs/PNAs) • Fumigants ethylene dibromide (EDB) and 1,2-dibromo-3-chloro propane (DBCP) • Ammonia • Total phosphorus Modified Title 22 §64433 general minerals suite: - Sulfate - Nitrate Chloride- Total dissolved solids (TDS) Water samples for VOC (including fumigant) analysis will be collected with the low- flow pump at a rate of 100 ml/min or less, and carefully transferred to VOAs (with the appropriate preservative), ensuring the absence of headspace. All samples will be labeled, sealed and stored on ice (4C) according to laboratory requirements. Samples for diesel-range and heavier hydrocarbons, semi-volatile and non-volatile constituents may be collected at flow rates of 1 liter/min, and transferred into their appropriate containers (with preservatives as required), labeled and stored on ice (4C) for delivery to the laboratory. Non-disposable sampling equipment will be decontaminated between wells by washing with a non-phosphate detergent, rinsed twice with tap water and final-rinsed with deionized or distilled water. One rinsate blank will be collected and analyzed per sampling event. One duplicate groundwater sample will be collected and analyzed for every ten submitted for the same analysis. One trip blank (per sampling event), prepared by the laboratory, will accompany the groundwater samples back to the laboratory. Standard chain-of-custody protocols will be employed for sample identification and transfer of possession. Field personnel will be mindful of short holding times, and ensure samples are delivered to the laboratory in sufficient time for extraction and analysis. Analyses for the constituents listed above will be as follows: • VOCs: EPA Method 8260B • TPH-cc: EPA Method 8015B • As and Hg: EPA Method 6010B • Cr VI: EPA Method 218.6 • SVOCs(incl. PAHs/PNAs): EPA Method 8270C • Fumigants (EDB, DBCP): EPA Method 504.1 • Ammonia: Standard Method(SM)4500 NH3 B/C(EPA 350.2) • Total phosphorus(P): SM 4500 P B/E(EPA 365.3) • Sulfate (SO4),Nitrate(NO3) and Chloride(Cl): EPA Method 300.0 • Total Dissolved Solids(TDS): SM 2540C(EPA 160.1) Purge water will be stored in labeled drums until laboratory results have been received, at which time the groundwater and drums will be disposed in conformance with appropriate regulations.