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SAMPLING PROTOCOL FOR ROUTINE PIPING/DISPENSER REMOV /REPLACEMENT <br /> The following represents minimum sampling criterion required for closure compliancV oil samples collected shall be <br /> representative of native soils beneath the tank's invert (tank's bottom) ata collect' depth not to exceed 2 - 4 feet. If <br /> contamination is documented during closure, an Unauthorized Release Noi ficati must be completed and submitted within <br /> five(5)working days pursuant to California Health &Safety Code, Section 2529 . <br /> DISPENSER S PLES <br /> AT LEAST ONESA LE BELOW EACH DISPENSER <br /> PIPING AND STOCKPILE <br /> PIPING SOIL MPLES 1 Sample every 20 lineal feet <br /> DISTtSER& PIPING STOCKPILE SAMPLES 2 Samples every 50 cubic yards <br /> �f <br /> e <br /> 4 <br />