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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 rds <br /> Tri-Regional Recommendations <br /> Appendix A <br /> TABLE#2 RECOMMENDED MINIMUM VERIFICATIO ANALYSES <br /> FOR UNDERGROUND STORAGE TANK INV TIGATIONS <br /> Tank Gasoline Diesel Oil& PCBs Total BTEX VOCs Title <br /> 8OCs <br /> Samples Contents by 8015M by by by by Grease by Lead by 22 <br /> Required (Carbon or8260B 8015M 021B 82608 82700 by 166"4A 8082 7421 Metals <br /> Range) 8260B (1 (2) (3) <br /> Unknown Fuel X X X X <br /> C4-C36 <br /> Gasoline(C4-C20) X X X <br /> Diesel(C10-C36) X X <br /> Jet Fuel/Kerosene X X <br /> C9-C20 <br /> Heating Oil(Cl <br /> 0- X X <br /> C32 <br /> Stoddard Solvent <br /> (C8-C20) X X <br /> Non-Chlorinate <br /> Chlorin ed X X <br /> SON is <br /> 4 <br /> U nown Contents aste Oil or X X X X X X X <br /> Notes: <br /> 1. EPA ethod 82608 analyses must include all analytes listed in the method plus fuel oxygenates methyl-tertiary-butyl ether <br /> (M E),diisopropyl ether(DIPS),ethyl-tertiary-butyl ether(EtBE),tertiary-amyl-methyl ether(TAME),tertiary-butanol(TBA), <br /> thanol 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 /> evised 8/3/07 <br /> 3 <br />