Laserfiche WebLink
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 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 ANK SIZE MINIMUM kDABER LOCATION OF SOltl§<PLES <br /> # ( ons) of SOIL SAMP <br /> < 1,000 1 per Tank Fill OR Pum End of Tank <br /> 1,000- 10,000 2 Tank 1 at each End of Tank <br /> > 10,000 3 or More E�n d Middle OR generally <br /> per Tank ced g the length of the Tank <br /> !# <br /> i PIPING AND STOCKPILE e <br /> 1 <br /> PIPING SOIL SAMPLES I Sample every 20 lineal feet <br /> I <br /> TANK&PIPING STOCKPILE SAMPLES 2 Samples every 50 cubic yards <br /> i <br /> WATER IS PRESENT IN TANK PIT <br /> f <br /> TANK ! NK SIZE MIN 'v NUMBER LOCATION of SOIL, MINIMUM NUMBER <br /> # P (G ons) SAMPLES SAMPLES of WATER SAMPLES <br /> t < 10, 2 frorn wall next to tank <br /> Single 3 ends at soillgroundwater I <br /> i <br /> interface& I below tank <br /> ! > 10,000 O 4 from wall next to tank <br /> I ends at soillgroundwater <br /> I Tank Cluster 5 or more interface& I below each I <br /> k <br /> SLAB PRESENT IN THE TANK PIT <br /> Soil samples 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 /> TANKNNOK SIZE MI IMUM NUMBER LOCATION of SOIL SAI LES <br /> # ns) of S L SAMPLES <br /> < 1, 3 er T Center and Ends OR Sides of T j <br /> 1,000- 10, 5 Er Tank <br /> Center and Ends OR Sides of Tank <br /> > 10,000 5 OR More per T Ends and Middle and generally spaced <br /> along the length of the Tank <br /> EH 23 046(Revised 08/13199) Page 7 <br />