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RECEIVED <br /> JUN 21 2018 <br /> #' <br /> CGRS <br /> SOLUTIONS DELIVERED ENVIRONMENTAL HEALTH <br /> DEPARTMENT <br /> • <br /> iota <br /> rNNA-ED LEAK DETECTION <br /> June 19, 2018 <br /> Site Location <br /> Arco <br /> 2050 Crestwood Ave. <br /> Manteca, CA 95336 <br /> Subject: Work Plan for IOTA VaporTite Pre and Final ELD Testing Services <br /> To Whom It May Concern: <br /> CGRS is pleased to present you with this work plan for pre and final enhanced leak detection (ELD) testing <br /> services for your project at the above referenced location. CGRS will utilize the iota VaporTite V005 (LG 113) to <br /> perform the final ELD post installation test as required by the State of California. This test method has been <br /> evaluated by the California State Water Resource Control Board and determined to meet the performance <br /> requirements for post installation ELD testing(see LG 162-3 attached). <br /> O Pre Testing will be performed on the primary containment portion of the fueling system with the IOTA <br /> test method while the tank top and product, vent and vapor piping is exposed, prior to backfilling. Any <br /> problems encountered during the pre-testing will be addressed by the installation contractor and <br /> retested by CGRS the testing crew. <br /> O Final ELD testing will be performed on all primary fuel containment system components once the fueling <br /> system has been completed (everything below grade surface) backfilled, concrete poured, and the <br /> system is essentially ready to receive fuel. This will provide the installation contractor, general <br /> contractor, design engineer, site owner and operator with third party certification that the system is <br /> "vapor tight" before it ever receives fuel. <br /> CGRS holds a current California Contractors License with a Hazardous Materials endorsement. All final ELD <br /> testing will be performed by a certified IOTA technician holding a current California Tank Tester license. <br /> If you have any questions regarding any aspect of this work plan, please don't hesitate to contact me at 1-800- <br /> 288-2657. <br /> Sincerely, <br /> Chris Murphy <br /> Director of CA Operations <br /> CGRS, Inc. <br /> 1301 Academy Ct. <br /> 800.288.2657 1 Fort Collins,CO 80524 <br />