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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.SAM P L ES 1 Sample beneath each dispenser <br /> E][PIPING SOIL SAMPLES 1 Sample every 20 lineal feet <br /> DISPENSER & PIPING STOCKPILE SAMPLES 2 Samples every 50 cubic yards <br /> Tri-Regional Recommendations <br /> Appendix A <br /> TABLE #2 RECOMMENDED MINIMUM VERIFICATION ANALYSES <br /> FOR UNDERGROUND STORAGE TANK INVESTIGATIONS <br /> Tank <br /> BTEX VOCs Semi- <br /> Gasoline Diesel VOCs Oil& PCBs Total Title <br /> Samples Contents by by b Grease b Lead b <br /> Required Carbon by 8015M by Y Y Y <br /> 8021 B 82606 Metals <br /> q (Ran a or 826013 8015M or (1) 8(7jC by 1664A 8082 7421 (3) <br /> Range) 82608 2 <br /> Unknown <br /> (C4 C36uel ������ <br /> Gasoline(C4-C20) <br /> Diesel(C10-C36) EK] x F <br /> Jet Fuel/Kerosene( <br /> C9-C20) <br /> Heating COil j(C10 � XF <br /> Stoddard Solvent ❑❑�❑�❑ <br /> (CS-C20) ❑❑ X <br /> Non-Chlorinated <br /> Chlorinated <br /> ��������� <br /> �� Unknown Oolntents F—x ]F— IF x]E:K:1E:K::1EK1=� <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 />