REMOVAL 2002 CLOSURE IN PLACE - Laserfiche WebLink

Home Browse Search

SAMPLING PROTOCOL FOR ROUTINE TANK REMOVALS The fallowing represents minimum sampling criterion required for closure compliance. Soil samples collected shall be representative of native soils beneath the tank's invert(tank's bottom) at a collection depth not to exceed 2-4 feet. If contamination is documented during closure, an Unauthorized Release Notification must be completed and submitted within five(5)working days pursuant to California Health& Safety Code, Section 25295. WATER NOT PRESENT IN THE TANK PIT TANK TANK SIZE MINIMUM NUMBER LOCATION OF SOIL SAMPLES k (Gallons) of SOIL SAMPLES < 1.000 I er Tank Fill OR Pump End of Tank 1,000- 10,000 2 er Tank 1 at each End of Tank L7 > 10,000 3 or More Ends and Middle OR generETank per Tank spaced along the length of th :j PIPING AND STOCKPILE =TANK SAMPLES 1 Sam le eve 20 lineal feet ING STOCKPILE SAMPLES 2 Samples every 50 cubic yards WATER IS PRESENT IN TANK PIT I TANK TANK SIZE MINIMUM NUMBER LOCATION of SOIL MINIMUM NUMBER k (Gallons) of SOIL SAMPLES SAMPLES of WATER SAMPLES < 10,000 2 from wall next to rank Single Tank 3 ends at soil/groundwater 1 interface& 1 below tank > 10,000 OR 4 from wall next to tank ! Tank Cluster ends at soil/groundwater 5 or more interface& 1 below each 1 tank I SLAB PRESENT IN THE TANK PIT Soil samples shall be obtained beneath the slab within native soils. Penetration through the obstruction will be required in order to collect the samples. (Physical removal of the obstruction wilt allow sampling according to the above conditions.) rTANKfTANK SIZE MINIMUM NUMBER LOCATION of SOIL SAMPLES llons) of SOIL SAMPLES 1,000 3 r Tank Center and Ends OR Sides of Tank 00- 10,000 5 er Tank Centerand EndsOR Sides of Tank 10,000 5 OR More per Tank Ends and Middle and generally spaced along the length of the Tank EH 23 046(Revised 08/13/99) Page 7