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y <br />SAN �70AQUIN LOCAL. DISTRICT <br />SA"FLING PROTOCAL FOR ROUTINE TANK REMOVALS <br />The following represents minimum sampling criterion required for closure compliance. Soil <br />samples collected shall be representative of native soils beneath the tank's <br />invert [tank's bottom) at a collection depth not be exceed 2 - 4 feet. If contamination <br />is documented during closure, an Unauthorized Release notification must be filled out and <br />submitted to SJLHD within 5 days. Section 2652, CCR. <br />WATER NOT PRESENT IN THE TANK PIT <br />— -- -..__......._..._.......... -_...... --._.....................................................__......_....................._.........----....._....._._..__._....- <br />TANK SIZE 14INIMUM NUMBER OF LOCATION OF SOIL SAMPLES <br />SOIL SAMPLES <br />Less than 1000 gallons ONE per tank Fill or pump end of tank <br />00 - 10,000 gallons TWO per tank ;One at each end of tank <br />10,001 gallons and up THREE OR MORE s or <br />per tank generally spaced along <br />the length of the tank <br />V. Piping ONE EVERY 20 LINEAL FEET <br />WATER IS PRESENT IN TANK PIT <br />TANK SIZE <br />MINIMUM NO. OF LOCATION OF SOIL MINIMUM NUMBER <br />SOIL SAMPLES SAMPLES OF WATER SAMPLES <br />10,000 GALLONS <br />From wall next to <br />OR LESS <br />tank ends at soil/ <br />(Single Tank) <br />TWO groundwater. ONE <br />interface <br />GREATER THAN <br />From wall next to ONE <br />10,000 GALLONS <br />tank ends at soil/ <br />OR <br />groundwater <br />TANK CLUSTER <br />FOUR interface <br />OTHER SLPECIAL CONDI'T=ONS <br />SLAB PRESENT IN TANK PIT <br />Soil samples shall be obtained beneath the slab within native sails. Penetration through <br />the obstruction will be <br />required in order to collect the samples. (Physical removal of the <br />obstruction will then allow sampling according to the above conditions.) <br />'EH 23 047 12/88 <br />REVISED 1/89 <br />