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WFiLIUrvtrvYin�.�riinu ' <br /> M,-Ir- 15 '93 03: 19PM ULRR INC. � P.9/16 <br /> SAMPLIING PROTOCOL FOR ROUTINE TANK RWAOVALS <br /> flf <br /> The following rcpreasnts minimum sampling criterion required for closure compliance Soil samples collected ahtU be ?� <br /> representative of native sails beneath the tank's invert (tank's bottom) at a collection depth not to exceod 2 - 4 fact, If <br /> eantaminatioa is documented during closure, an Unauthorized Release Notification must be completed and submitted �t <br /> within five (5) working days pursuant to California Health A Safety Code, Section 25295. r <br /> WATER=1 PRESENT IN THE TANK PIT <br /> TANK TANK SIZE MDingUM NUMBER LOCATION OF SOIL SAMPLES <br /> # (Oallont) of SOIL SAMPLES <br /> t 1,000 1 per Task Fill OR Pump End of Tank tl <br /> 1,000 - 10,000 2 per Tank i at each End of Tank <br /> n 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 /> PIPIN SOIL SAMPLES I Sample every 20 lineal feet fl <br /> '1 <br /> TANK do PIPING STOCKPILE SAMPLES 2 Samples every 50 cubic yards <br /> WATER IS PRESEh7 IN TANK PIT <br /> TANK TANK SIZE MRQMUM NUMBER LOCATION of SOIL MINIMUM NUMBER of j <br /> # (Gallons) of SOIL SAMPLES SAMPLES WATER SAMPLES <br /> a 10,000 From wall neat to tank <br /> Single Tank 2 ends at toill groundwater I <br /> interface <br /> i 10,000 OR From wall am to tank { <br /> Tank Cluster 4 ends at soiV I <br /> groustdwater interfact <br /> SLAB PRESEA7 IN THE TANK PIT <br /> Soll samples shall be obtained beneath the slab within native soils. Penetration through the obstruction will be required in <br /> order to collect the samples. (Physical removal of the obsuustion will allow sampling according to the above eonditiona.) <br /> TANK TANK SIZE <br /> MINIMUM NUMBER LOCATION of SOIL SAMPLES <br /> M (Gallons) of SOIL SANTLES <br /> c 1000 3 t Tank Center and Enda OR Sides of Tank <br /> r <br /> 11000 - 10,000 5 per Tank Center and Ends OR Sides of Tank <br /> i 10,000 5 OR Mors per Tank Ends and Middle and generally spaced along <br /> the length of the Tank <br /> EH 23 047 (Revised 7/10/42) Page 7 <br />