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May, 29, 2007 9; 56AM No, 0491 P. 3 <br /> SAMPLING PROTOCOL FOR ROUTINE PIPINGIDISPENSER REMOVALIREPLACEMENT <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 25285, <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 /> DISPE14SER&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 /> TankSemi- <br /> BTEK VOCs Title <br /> Gasoline Diesel VOCs OIIB PCB® Total <br /> Sampled Contents by 8018M by by by by Grease by Lead by 2z <br /> Required (Carbon or 82608 8016M 802119 $260 <br /> (1) 82700 by 1064A 8062 7421 Metals <br /> R826r t1) (2) (31 <br /> Unknown Fuel X X X X <br /> C4-036 <br /> �.:,. <br /> 17 <br /> Gasoline(C4-C20) X X ®� <br /> Diesel(C10-C36) X X X <br /> Jet F(Cosene <br /> (CO-C2 <br /> X X IF <br /> CA-020 <br /> Healing Oil(010777 77-71 <br /> - <br /> 032 <br /> - <br /> _. <br /> Stoddard Solvent <br /> (08-020) X X <br /> on-Chlorinated <br /> _,..._.,... 174 <br /> Chlorinated � X ....)( <br /> SOlvenls <br /> _. <br /> - - <br /> Waste QII Or X X X X X X <br /> Unknown COnlenlll F : <br /> Notes, <br /> 1, , EPA Method 62608 analyses must include all analytes listed in the method plus fuel oxygenates methyl-tertiary-butyl ether <br /> (MTBE),diisopropyl ether(DIPS),ethyl-tertiary-butyl ether(ELBE),tertiary-amyl-methyl ether(TAME),tertiary-butanol(TBA), <br /> methanol and ethanol and fuel additives 1,2-dichloroethene(1,2-DCA)and ethylene dibromide(EDB or 1,2-dibromoethene). <br /> 2. If pentac hfurophenol(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 />