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MONITORING PROCEDURES FOR DOUBLE WALL TANKS TANK MONITORING: The Underground storage tanks are monitored using an approved continuous monitoring system (see below). This system is able to detect the presence of a leak in the primary as well as secondary containment through the use of a Wet (liquid filled) or a Dry annular space and submerged liquid level sensor. The operator will maintain a daily log that charts the operating status of the monitoring system. If a alarm conditions occurs, the dealer will call Service Station Services at 800-887-8009 (24 hour) immediately. Response to the alarm condition will occur within 24 hours. If the alarm condition is NOT the result of an equipment failure, then Shell will repair the tank system in accordance with all local and state requirements. If the alarm condition is the result of an equipment failure, Shell will repair the equipment as required and ensure that it is functioning properly. MONITORING SYSTEM: The following continuous monitoring system is used at this facility: RONAN X76LVC (product tanks), RONAN (waste oil tank) The monitoring will be preformed on site by the authorized personnel below. INVENTORY RECONCILIATION: Daily product inventory reconciliation will be completed by the Shell Dealer at the facility. 1) Approved meters for tank inputs and withdrawals. 2) Inventory reconciliation which exceeds an allowable measurement error "plus 0.15 percent of throughput" at any time during a 30-day period shall require further investigations: Tank Size Allowable Measurement Error less than 4000 gal. 25 gallons 4000 to 8000 gal. 50 gallons 8000 to 12,000 gal. 75 gallons 12,000 gal. or more 100 gallons Should inventory reconciliation indicate a loss greater than specified, the investigative steps outlined in California Administrative Code, Title 23 Waters, Subchapter 16 Underground Tank Regulations, Article 4, Section 2644(F), will be implemented. PREVENTATIVE MAINTENANCE: The monitoring equipment shall be inspected and certified annually. Maintenance will be performed annually or as needed. All work performed to the monitoring system will be in accordance to the manufacturers recommendations. VISUAL MONITORING of the tank monitor alarm box is performed daily by the dealer or a designated employee. Please see the attached site map for the location of all equipment and forms for keeping monitoring records at the site. The electronic monitoring devices are maintained accordins to manufacturer's recommendations. The dealer will also perform inventory reconciliation according to the procedure outlined in the Inventory reconciliation section of this plan. Training will be given which includes information regarding: how to self test the electronic monitoring equipment, what the equipment monitors, how to tell when the alarm goes off, how to perform inventory reconciliation, record keeping requirements and procedures to follow in the event of alarm activation, leak, suspected leak, or other emergency. TRAINING Tank operators are trained on the proper operations of the monitoring equipment per the manufacturer's instructions. RESPONSIBLE SHELL PERSONNEL: The following personnel are responsible for performing monitoring or maintaining the equipment. NAME TITLE PHONE Randy Carroll Manager Day 209-957-5398 24hr 209-957-6612 Jeff Granberry Project Engineer Work 510-675-6145 Home 510-673-0753 Jeff Byram District Engineer Work 510-675-6146 Home 510-674-9413 Dan T. Kirk Environmental Engineer Work 510-675-6168 Home 510-283-8573 See also "Shell Leak Response Plan"