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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 <br /> Appendix A <br /> TABLE#2 RECOMMENDED MINIMUM VERIFICATION ANALYSES <br /> FOR UNDERGROUND STORAGE TANK INVESTIGATIONS <br /> Tank BTEX VOCs Semi- Title <br /> Samples COntentS Gasoline Diesel b b VOCs Oil& PCBs Total <br /> Required by 8015M by y y by Grease by Lead by 22 <br /> Metals <br /> q (Carbon <br /> n or 8260B 8015M 802 f B 8(1)B 8270C by 1664A 8082 7421 <br /> (2) 3 <br /> Range) 8260B ( ) <br /> unknown <br /> (C4-C36)uel 1 11 11 <br /> Gasoline(C4-C20) Xif X X � <br /> Diesel(C10-C36) X ����� <br /> Jet Fuel/KeroseneC9-C20) IE <br /> Heating C Oil(C10-32) L <br /> Stoddard Solvent <br /> (C8-C20) <br /> �a❑F❑ <br /> Non-Chlorinated F ❑�❑ <br /> Cd X � <br /> SolventsWaste=1 <br /> Unknown COontents F X F x El �I I=x <br /> Notes. <br /> 1. EPA Method 82608 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 8081A. <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 />