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l"CEIVED <br /> LIARSAN 2018 <br /> s } `' ,OAQUIN <br /> Environmental Health Department <br /> C 0 UN T Y-._�:. ENVRONIVIENTAL <br /> SAMPLING PROTOCOL FOR ROUTINE PIPINGIDISPENSER 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. <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 contamina#ion 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 /> i <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 /> DISPENSER&PIPING STOCKPILE SAMPLES 2 Samples every 50 cubic yards <br /> TABLE#2 RECOMMENDED MINIMUM VERIFICATION ANALYSES <br /> FOR UNDERGROUNb STORAGE TANK INVESTIGATIONS <br /> TANK TANK Gasoline Diesel BTEX VOCs(l) Semi- oil& PCB Total Title 22 <br /> # CONTENTS VOCS11) Grease Lead metals() <br /> 8015M 8021$608 82608 6082 7421 <br /> I 82606 8015M 82 8270C 1664A <br /> I <br /> ii <br /> Unknown Fuel <br /> i (C4-C36) X X X X <br /> t Gasoline <br /> ! (C4-C20) X X x <br /> Diesel <br /> (C10—C36) X X X <br /> Jet FueflKerosene <br /> (C$-C20) X X <br /> j pleating Oil <br /> t (C10-C32) X X <br /> Stoddard Solvent <br /> (non-chlorinated) X X S7 <br /> Ca-C20 <br /> I Chlorinated <br /> Satvenis X X <br /> ( Waste Oil or X X X <br /> Unknown Contents X X X X <br /> Notes: <br /> 1. EPA Method 82606 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(EtSE),tertiary-amyl-methyl ether(TAME),tertiary-butanol <br /> (TBA),methanol and ethanol and fuel additives 1,2-dichloroethane(1,2-DCA)and ethylene dibromide(EDB or 1,2- <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 8081 A. is <br /> t� <br /> 3. Title 22 Metals:Method 60106 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 7641. <br /> 4. Non-proprietary,performance based analytical methods may be used with approval of Regional Board staff. <br /> 6of6 <br />