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0. <br /> 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 22 <br /> Required Carbon by8015M by 8021 B 8260B by Grease by Lead by Metals <br /> or 82608 8015M or (1) 8270C by 1664A 8082 7421 <br /> Range) (2) <br /> 82608 (3) <br /> Unknown(C4-C36)uel ,[ �� -1 11 X � <br /> IE � � �� <br /> - Gasoline(C4-C20) X <br /> �-J Diesel(C10-C36) �®®®����� <br /> F-1 Jet Fuel/Kerosene �� X ��( ����� <br /> C9-C20 Il_ <br /> (� <br /> Heating C Oil(C10- X ��������� <br /> Stoddard Solvent <br /> (C8-C20) <br /> C8C20 aced) <br /> Non-Chlorinated �❑�a <br /> Chlorinated <br /> Solvents X X rr�� <br /> C� Unknown�ontents L X X I[ X <br /> Notes: 1 <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 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 />