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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 Sens <br /> r826 <br /> VOCs Title <br /> Gasoline Diesel VOCs Oil8 PCBs Total <br /> Samples Contents by SO15M by by by Grease by Lead by 22 <br /> Required (Carbon 82608 Metals <br /> Range) or 82606 8015M (1) 8`7 C by 1664A 8082 7421 (3) <br /> g ) <br /> un(kCnown <br /> 4-C36 uel ��=� X � <br /> Gasolin���������� <br /> Diesel(C10-C36) ��X FX X <br /> Jet Fuel/Kerosene X X <br /> C9-C20 <br /> Heating C Oil(C10- 'Xj X ������ <br /> Stoddard Solvent <br /> Non-Chlorinated IIIILL��..JJJIII <br /> Cd X_ X_ <br /> Solvents <br /> X00 X �0�0000 <br /> waste Gil or <br /> Unknown Con[en[s <br /> Notes: <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(ELBE),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 8/3/07 <br /> 3 <br />