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Apr 07 08 10:58a Sandra Barnhart 2098458586 p.6 <br /> I <br /> a <br /> SAMPLING PROTOCOL FOR ROUTINE PIPINGIDISPENSER REMOVAUREPLACEMENT <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) of 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 Califcmia 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 <br /> (Carbon by 8015M by 802!6 . 82608 by Grease by Lead by 22 <br /> (Ran @ or 82606 801sm 2 (6} 8270C by 16s4A 8082 7421 metals <br /> 9 82608 (2) (3) <br /> Unknown Fuel <br /> C4-C36 X X X X <br /> Gasoline(C4-C20) X X X <br /> Diesel(C1+0-C36) X X X <br /> Jet Fuel/Kerosene <br /> C9-C20 X X <br /> Heating Oil(C10- <br /> C32) X X <br /> Stoddard Solvent <br /> (c8-C20) X X <br /> Non-Chlorinated <br /> Chlorinated <br /> Solvents X X <br /> Waste Oil or ,( <br /> Unknown Contents El=x X X X X <br /> Notes: <br /> 1. EPA Method 82606 analyses must include all analytes listed in the method plus fuel oxygenates methyl-tertiary-butyl ether <br /> (MTBE),diisopropyl ether(RIPE),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-dibrornoethane). <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 60108 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 />