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May - 22 . 2003 4: 15PM Gla 0 <br /> r Environmental No . 0354 P . 6 <br /> SAMPLING PROTOCOL FOR ROU'T'INE 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 contamination <br /> Is documented during closure,an Unauthorized Release Notification must be completed and submitted within five(5)working days <br /> pursuant to California Health&Safety Code,Section 25295. <br /> WATER NOT!PRESENT IN THE TANK PIT <br /> TANK TANK SIZE MINIMUM NUMBER LOCATION OF SOIL SAMPLES <br /> # (Gallons) of SOIL SAMPLES <br /> < 1,000 I =Tank Fill OR Pum EndofTsu* <br /> 11000- 10,000 2 per Tarek 1 at each End of Tank <br /> > 10,000 3 or More Eads and Middle OR generally <br /> per Tank spaced alaag the length of the Tank <br /> e <br /> PIPING AND STOCKFELE <br /> PIPING SOIL,SAMPLES 1 Sam le eve 20 lineal feet <br /> TANK&PIPING STOCKPILE SAMPLES 2 Samples every 50 cubic yards <br /> W, ATER IS PRESENT IN TANK PIT <br /> TANK TANK SIZE MINIMUM NUMBER LOCATION of SOIL MINIMUM <br /> # (Gallons) of SOIL SAMPLES SAMPLES of WATER SAMPLES <br /> < 10,000 2 from wall next to tank <br /> Single Tank 3 earls at soil/groundwater I <br /> interfte&1 below tank <br /> 4 from wall text to tank <br /> Tank Cluster a 9 k Chis (?R ends et solUgroundwater <br /> ter 3 or more interface& a below each $ <br /> I( tank <br /> I <br /> SLAB PRESENT IN THE TANK PIT <br /> Soil samples shall be obtained beneath the slab within native soils. Penetration through the obsuution 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=0 3 r Tank Center and Ends OR Sidesof Tank <br /> 1,000- 10 <br /> 000 6 ver Tank Center And Ends OR Sides of Tank <br /> > 10,000 5 OR More per Tank Ends and Middle and generally spaced <br /> along the length of the Tank <br /> EH 23 046(Revised 08/13199) Page 7 <br />