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MONITORING RESPONSE <br />ARCO •t COMPANYWITgrco. <br />SINGLE WALL TANKS AND SINGLE WALL LINES <br />ARCO Facility Q 133 Address <br />Tanks • Statistical Inventory Reconciliation (SIR) and Biennial Tank Integrity Testing in <br />accordance with SWRCB LG -123-1 and Section 2643 (c)(1), Article 4, <br />Title 23, CCR. <br />Lines • Automatic Pressure Line Leak Detectors and Annual Line Tightness Testing in <br />accordance with Section 2643 (d)(1) and (3), Article 4, Title 23, CCR. <br />InventoryInventory reconciliation shall be performed in compliance with the details of SWRCR <br />•,measurements for product inputs,withdrawals,• the amount <br />remaining in the tank shall be c• •-• daily. <br />a. The equipment used to take inventory readings shall be in good working order and <br />capable of measuring the product level over the full range of the tank's height to t <br />nearest one-eighth of <br />Product • be :c• :• with deliveryreceiptsby of <br />inventory volume before and after delivery. <br />D Deliveries shall be •e through a drop tube that extendsto within six inches of :, <br />tank bottom. <br />ProfessionsE Meters used for determining inputs and withdrawals shall comply with CCR, Title 4, <br />Chapter 9. Subchapter 1, *Tolerances and specifications for commercial weighing and <br />measuring devices." Meters shall be inspected by the County Department of Weights <br />and Measures or a device repairman as defined in the California Business and <br />