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SAMPLING PROTOCOL FOR ROUTINE PIPING/DISPENSER REMOVALIREPLACEMENT <br />Tho 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 />wonting days pursuant to California Health & Safety Code, Section 25295. <br />7 <br />DISPENSER PIPING AND STOCKPILE SAMPLES <br />DISPENSER SAMPLES <br />PIPING SOIL_ SAMPLES <br />DISPENSER & PIPING STOCKPILE SAMPLES <br />Tri -Regional Recommendations <br />Appendix A <br />1 Sample beneath each dispenser <br />1 Sample every 20 lineal feet <br />2 Samples every 50 cubic yards <br />TABLE #2 RECOMMENDED MINIMUM VERIFICATION ANALYSES <br />FOR UNDERGROUND STORAGE TANK INVESTIGATIONS <br />TankeTrx voce semi- Tule <br />Samples Contents Gasoline Diesol b b vocs Oil & PCBs Total <br />by 8018M by y y by I Grease by Lead by Metals <br />22 <br />Range) Required (Carbon <br />or 82606 8016M 80ox 8 B (1) 8270C by 1664A 8082 7421 <br />g 92609 12) (a) <br />Unknown ruel - <br />C 4-G3fi X X X X <br />-J� Gasolino (C4 -c20) X X X <br />Diesel(C10-cm) J X X X <br />Jot FueUKeroseno X - <br />Ca ( 9•CZ� j X <br />oil l (C10- -- <br />t sl X F' -x71.. <br />Stoddard Solvent <br />{CB -C10) X X <br />Non - Chlorinated <br />Chlorinated <br />Solvents %� X <br />777Waste oil or X X X X X X X <br />Unknown Contents <br />Notes: <br />1, EPA Method 826015 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 other (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 601 OB 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 7641. <br />4. Non-proprietary, performance based analytical methods may be used with approval of Regional Board staff. <br />l;ovlseKl 818106 <br />3 <br />2d W090:60 LOOS 6Z '1-00 6EZE-629—OTZ: 'ON XUA CNI 39JOd JO13ld-1 OJiSd Wil: WOJd <br />