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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 <br /> ( 5 ) 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 /> TABLE #2 RECOMMENDED MINIMUM VERIFICATION ANALYSES <br /> FOR UNDERGROUND STORAGE TANK INVESTIGATIONS <br /> TANK TANK TPH -G TPH - D BTX & E CL HC TOTAL MTBE OXYGENATES METALS PCB <br /> # CONTENTS LEAD (MTBE , TBA , DIPS , ICAP/AES 8270 <br /> 8015 8015 8020 8010 8020 ETBE , TAME) or 8080 <br /> 8260 8260 8260 8240 7420 8260 <br /> 8260 7421 1 , 2 DCA & EDB AA <br /> 8260 <br /> LEADED GAS X X X X <br /> UNL GAS X X X <br /> DIESEL X X <br /> KEROSENE X X X <br /> LINK FUEL X X X X X <br /> PROD . OIL X X X <br /> CHLOR , <br /> SOLVENTS X X X <br /> NONCHLOR <br /> SOLVENTS X X X <br /> WASTE \USED OIL <br /> OR <br /> UNKNOWN X X X X X X X <br /> CONTENTS <br /> Notes - <br /> 1 . <br /> otes :1 . EPA Method 8260B analyses must include all analytes listed in the method plus fuel oxygenates methyl - <br /> tertiary- butyl ether ( MTBE ) , diisopropyl ether ( DIPE ) , ethyl -tertiary-butyl ether ( EtBE ) , tertiary-amyl -methyl <br /> ether (TAME ) , tertiary- butanol (TBA ) , methanol and ethanol and fuel additives 1 , 2 -dichloroethane ( 1 , 2 - DCA) <br /> 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 <br /> Method 8290 and pesticides by EPA Method 8081A . <br /> 3 , METALS ICAP or AA Inductively Coupled Plasma Atomic Emission Spectrometry 6010 or Atomic Absorption <br /> Spectrometry 7000 . Metals : Cadmium , Chromium III and VI , Lead , Zinc and Nickel . <br /> 4 . Non - proprietary , performance based analytical methods may be used with approval of Regional Board staff. <br /> Revised 07- 17-2014 <br /> 5 <br />