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10/17/2000 09:00 20946P 13 FIFTH FLOOR PAGE 07 <br /> SAMPLING PROTOCOL FOR ROUTINE TANK REMOVALS <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 conmwimdoa <br /> is documented during closure, an Unauthorized Release Notification must be completed and submitted within five(5) working days <br /> pursuant to California Health do Safety Code, Section 25295. <br /> WATER NOT PRESENT IN THE TANK PIT <br /> TANK TANK SIZE MINIMUM NUMBER LOCATION OF SOIL SAMPLES <br /> if (()aUcns) of SOIL SAMPLES <br /> c 1000 1 per Tank Fill OR Pump End of Tank <br /> i,000- 10,00D 2 per Tank 1 at each Pad of Tank <br /> > 10,000 3 or More Ends and Middle OR generally <br /> per Tank spaced along the length of the Tank <br /> PIPING AND STOCKPILE <br /> ElPIPINO SOIL SAMPLES 1 Sample every20 lineal het <br /> TANK tit. PIPING STOCKPILE SAMPLES 2 Samples every 50 cubic yards <br /> WATER IS PRESENT IN TANK PIT <br /> TANK TANK SIZE MINLVIUM NUMBER LOCATION of SOIL MINIMUM NUMBER <br /> N (Gallons) of SOIL SAMPLES SAMPLES of WATER SAMPLES <br /> < 10,000 2 from wall mw to tank <br /> Single Tank 3 eats at saWgroundwater 1 <br /> karwe do I below tank <br /> 4 9ntn wall next to tank <br /> > 10.000 OR <br /> Tank Closter S or more cads at seach 1 <br /> Interface&& I below each <br /> tank <br /> SLAB PRESENT IN THE TANK PIT <br /> Soil sarnples shall be obtained beneath the slab within native soils. Penetration through the obstruction will be required in order to <br /> collect the samples. (Physical removal of the obstruction will allow sampling according to the above conditions.) <br /> TANK TANK SIZE MINIMUM NUMBER LOCATION of SOIL SAMPLES <br /> (Gallons) of SOIL SAMPLES <br /> < 1,000 3 per Tank Center and Encs OR Sides of Tank <br /> 1,000- 10,000 5 ver Tank Cerner and Ends OR Sides of Tank <br /> > 10,000 5 OR More per Tank Ends and Middle and generally spaced <br /> along t'aee length of the Talc <br /> EH 23 046(Revised 08113199) Page 7 <br />