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SANJO AQ U I N Environmental Health Department <br /> COUNTY* <br /> SAMPLING PROTOCOL FOR ROUTINE PIPING/DISPENSER REMOVAUREPLACEMENT <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, <br /> Samples cannot be combined into a composite sample for analysis In the field or the lab. Each sample must <br /> have a set of corresponding analytical results. If contamination is documented during closure, an Unauthorized <br /> Release Notification must be completed and submitted within five (5) working days pursuant to California Health & <br /> Safety Code, Section 25295. <br /> DISPENSER PIPING AND STOCKPILE SAMPLES <br /> DISPENSER SAMPLES 1 Sample beneath each dispenser <br /> i <br /> �( PIPING SOIL SAMPLES 1 Sample every 20 lineal feet <br /> r[ j 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 f Gasoline Diesel BTEX VOCsOl Semi• 011 & PCB Total Title 22 <br /> # CONTENTS VOCsI2I Grease Lead Metals(9) <br /> 8015M 8021E 8260E 8082 7421 <br /> 82608 8015M 8260E 8270C 1684A <br /> Unknown Fuel X X X X <br /> (C4-C38) <br /> Gasoline <br /> ^ (C4-C20) X X X <br /> X Diesel — . X= X X <br /> (C10—Citi) lII <br /> l <br /> Jet FueUKerasene <br /> (C9-C20) X X <br /> Heating Oil X X <br /> (C10-C32) <br /> Stoddard Solvent <br /> (non-chlorinated) X X <br /> ± CB-C20 � <br /> Chlorinated <br /> Sclverrta X X <br /> Waste Oil or X X X X X X X <br /> Unknown Contents <br /> I <br /> i <br /> Notes: <br /> 1 . EPA Method 82808 anslyses must Include all analytes listed In the method plus fuel oxygenates methyl-terilary-butyl ether <br /> (MTBE), diisopropyl ether (DIPE) , ethyl4ertlary-butyl ether (EtBE), tertlary-amyl-methyl ether (TAME), tsrtlary-butanol <br /> (TBA), methanol and ethanol and fuel additives 1 ,2=dichloroethans ( 1 ,2-DCA) and ethylene dibmmlde (EDB or I o2- <br /> 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 , Title 22 Metals: Method 80108 may be used for all but the following metals, for which Individual AA methods are required: <br /> Antimony & Arsenic by 7062 , Cadmium by 7131A, Lead by 7421 , Mercury by 7471A, Nickel by 7521 , Selenium by 7742, and <br /> Thallium by 7841 . <br /> 4 . Non-proprietary, performance based analytical methods may be used with approval of Regional Board staff. <br /> 5of6 <br />