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• SAMPLING PROTOCOL FOR ROUTINE PIPING/DISPENSER REMOVAL/REPLACEMENT <br /> The following represents minimum sampling criterion required for closure compliance. Soil samples collected shall be <br /> representative of native soils beneath the tank's invert (tank's bottom) at a collection depth not to exceed 2 - 4 feet. If <br /> contamination is documented during closure,an Unauthorized Release Notification must be completed and submitted within five(5) <br /> working days pursuant to California Health&Safety Code,Section 25295. <br /> DISPENSER PIPING AND STOCKPILE SAMPLES <br /> DISPENSER SAMPLES 1 Sample beneath each dispenser <br /> PIPING SOIL SAMPLES 1 Sample every 20 lineal feet <br /> DISPENSER & PIPING STOCKPILE SAMPLES 2 Samples every 50 cubic yards <br /> Tri-Regional Recommendations / V (/4 <br /> Appendix A <br /> TABLE #2 RECOMMENDED MINIMUM VERIFICATION ANALYSES <br /> FOR UNDERGROUND STORAGE TANK INVESTIGATIONS <br /> Tank Gasoline Diesel BTEX VOCs VOCs Oil& PCBs Total Title <br /> Samples Contents by by 22 <br /> by 8015M by by Grease by Lead by <br /> Required (Carbon or 826013 8015M 80218 821) 8270C by 1664A 8082 7421 Metals <br /> Range) (1) (s) <br /> 826o13 (2) <br /> IL -it <br /> Unknownuel <br /> C4-C36 <br /> Gasoline(C4-C20) <br /> Diesel(C10-C36) <br /> Jet Fuel/Kerosene] <br /> (C9-C20) <br /> Heating C Oil(Cl <br /> 32) <br /> Stoddard Solvent F F F7❑ <br /> (C8-C20) X X �❑ <br /> Non-Chlorinated <br /> Chlorinated <br /> Solvents <br /> =1 <br /> Unknown Contents L��EKI=I:K]E:EE::K::I=x <br /> Notes: <br /> 1. EPA Method 8260B analyses must include all analytes listed in the method plus fuel oxygenates methyl-tertiary-butyl ether <br /> (MTBE),diisopropyl ether(DIPE),ethyl-tertiary-butyl ether(EtBE),tertiary-amyl-methyl ether(TAME),tertiary-butanol (TBA), <br /> methanol and ethanol and fuel additives 1,2-dichloroethane(1,2-DCA)and ethylene dibromide(EDB or 1,2-dibromoethane). <br /> 2. If pentachlorophenol (PCP) is identified, analyze the soil and/or water sample for dioxins and furans by EPA Method 8290 <br /> and pesticides by EPA Method 8081 A. <br /> 3. Method 6010B may be used for all the following metals, for which individual AA methods are required: Antimony&Arsenic <br /> by 7062, Cadmium by 7131A, Lead by 7421, Mercury by 7471A, Nickel by 7521,Selenium by 7742, and Thallium by 7841. <br /> 4. Non-proprietary, performance based analytical methods may be used with approval of Regional Board staff. <br /> Revised 8/8/06 <br /> 3 <br />