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PACIFIC ENVIRONMENTAL SYSTEMS, LLC <br /> Periodic Integrity Test Certificate <br /> P.O. Boa 576231. Modesto, CA 95357 Telephone: (209) 549-2451/209-499-6692cell <br /> Email: <br /> Client: Caltrans Stockton Maintenance Yard Contact : Tony Lertora,Maint.Manaaer <br /> Address: 1604 South B Street Phone No.: 209-942-6020 <br /> City/State/Zip; Stockton,CA 95206 Date of Test: 6-7-2019 <br /> Product Stored: Unleaded Gasoline for vehicle fifling <br /> Tank Information(Brand/gallonage/Fuel Stored/UL or other serialff/miscellaneous) <br /> ConVault/6000 aals/Unt.Gas/U"M297653AJL2085 Concrete-encased steel AST/22vrs old/(8/1989) <br /> Description of Secondary Containment Inteeral Secondary Containment <br /> Date of Test 6-7-2019 Test Supervisor(s) Todd McWhorter <br /> METHOD OF PERIODIC INTEGRITY TEST-Primary XX Secondary XX <br /> 1. Steel Thickness Test(in accordance with API-653 and/or STI SP001 (e edition)-Readings Steel <br /> Thickness UL142 min.. inJAve Steel thickness=. in.as tested <br /> 2. Inert Gas Blanket <br /> Gas Used: Nitrogen_; CO2:_; Other(specify) <br /> Air Pressure-Test ; Vacuum Test XX <br /> Initial Reading(document psi/Hg readings) 5 He Time 8:15am <br /> End Readings (document psi/Hg readings) 511a Time 9:15am <br /> Duration of Test- %drop <br /> 3. Sonar-Test Y_N(document db readings) Duration_ <br /> 4. Caiuc*visual)model Lorex MC81845/interstitial_(Result: P/F) Pass <br /> 5. Hydro-Carbon Sensor(probe)model OMNTEC BOA-- (Result: P/F) Pass <br /> 6. Hydrology(Water Column) (inches of water column readings) <br /> Duration %Drop Results(P/F) <br /> 7. Other: Inspect Vessel& secondary containment. AST clearance is 6 inches above Door.CRDM <br /> present, no evidence of lealdne product from primary vessel, system accessible for inspection:No <br /> product in secondary.Upon impection,no evidence of weld breaks,Punctures,structural cracic%or other <br /> structural damaee to the fault. AST is anchored to concrete floor :PASS <br /> TEST RESULTS <br /> 1°'-Stage: <br /> Pass XX Fail_(quantify)SENSOR DETECTS NO PRODUCT,NOR LEAKS FROM PRIMARY <br /> TANK INTO SECONDARY CONTAINMENT <br /> 2° Stage: <br /> Pass XX Fail_(quantify) NO VISUAL EVIDENCE OF PRODUCT INTHE SECONDARY <br /> NOR OF ANY OTHER LEAKS &NO DECAY ON VACUUM LEVELS FOR VACUUM TEST <br /> FOR 1 ITR. <br /> Comments section data on file <br /> Next Scheduled Periodic Integrity Test Q6-7-2039 7- (/r_ <br /> 'Y✓'L r�rl^ Pacific Environmental Systems,Representative <br /> STI SP001 Certified Inspector No.: AST 135013 <br />