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5-27-04; 8=43AM; ;925 551 7888 # 29/ 34 <br /> 0310512004 13:59 2094683433 FIFTH FLOOR PAGE 11 <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 nor to exceed 2-4 feet. If contantznat on <br /> is documentcd during closure; an Unauthorized Release Notification must be completW and submitted within five(5)working days <br /> pursuant to California Health&SO4 Code,Section 25295. <br /> WATER NOT PRESENT IN Tm TAA%ac 1'IT <br /> TANK TANK SIZE MINIMUM NUMBER LOCATION OF SOIL SAMPLES <br /> Y (Gallons) of SOIL SAMPLES <br /> 1 < 1,000 1 er Tank Fill OR Pum End of Tank <br /> 1,000- 10,000 2 per Tank I at each End of Tank <br /> > 10,000 3 or More lards anti giddle OR generally , <br /> per Tank spaced along the length of the Tank <br /> �® PIPIiYG AND STOCKPILE <br /> PIPING SOIL SAMPLES I Sample every 20 lineal feet <br /> 61 TANK&PIPING STOCKPILE SAMPLPS 2 Samples every SQ cubic yards <br /> WATER IS PRESENT-IN TANK PIT <br /> NK TANK SIZE MINIMUM NUMBER TION of SOIL MINIMUM NUMBER <br /> TANK <br /> (Gallons) of SOIL.SAMPLES SAMPLES of WATER SAMPLES <br /> < l0.Ot10 2 from wall next to tank <br /> Single Tank 3 enols at sQ111gr6uudwater 1 <br /> lmerfaae& 1 below tante <br /> 4 Ftotn will next to tank <br /> > 10,000 OR rods at seii/groundwater <br /> Tank ClusterL lt=k <br /> 5 or more irftcc&I below eecb 1 <br /> SLAB PRESENT IN THE TANK PIT 1 <br /> Soil samples shall be obtained beneath the slab within native soils. Penetration through the obstruction will be required iR order to <br /> collect the samples. (Physical removal of the obscrueaon will allow sampling accordlW to the above conditions.) <br /> TANK' TANK SIZES MINIMUM NUMBER LOCATLON of SOIL,SAM'TANK' <br /> (Gallons) of SOIL SAMPLES <br /> < 1,000 3 per Tank Center and Ends OR Sidcs of Tank <br /> 1,000- 10,000 S per Tank Center and Ends OR Sides of Tank <br /> > 10,000 S OR More per Tank Ends and Middle and generally spaced <br /> along the length of the Tank <br /> EH 23 046(Revised 06/13199) Page 7 <br />