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C. Non -clad ste k [Section 2635 (a) (2) (A)] <br />(1) Cathodic protection provided for entire tank, piping and components (nuts, bolts, <br />washers, etc.). <br />(2) Field installed cathodic protection systems designed and certified as adequate by a <br />corrosion specialist. <br />(3) Impressed current systems to be inspected no less than every 60 days. <br />D. Alternate construction for new underground storage tanks containing motor vehicles fuel [Section 2633]. <br />(1) Monitoring and response plan [Section 2634]. <br />(2) Underground storage tank composed of.... <br />(a) Fiberglass reinforced plastic. <br />(b) Cathodically protected steel. <br />(c) Steel clad with fiberglass reinforced plastic. <br />(d) Other material that complies with section 2631 and 2632. <br />(3) Floor of leak interception and detection system constructed on a firm base and sloped to <br />a collection sump (use of membrane liners comply with section 2631 (d) (6) <br />requirements.) <br />(4) Access casings installed in the collection sump of the secondary containment system with <br />backfill in the interstitial space. The access casing shall meet all of the following: <br />Designed and installed to allow the liquid to flow into the casing. <br />Sized to allow removal of collected liquid and able to withstand all anticipated applied <br />stresses. <br />Constructed of material that will not be structurally weakened. <br />Screened along entire vertical zone of permeable material. <br />Capable of preventing leakage of any hazardous substance from the casing. <br />Extend to the ground surface and covered with a locked waterproof cap. <br />Capable of meeting S.J. Co. EHD Well Standards. <br />Leak interception and detection system shall prevent the leaked hazardous substance <br />from entering ground water. <br />14. INTERSTITIAL SPACE MONITORING <br />A. Visual monitoring [Section 2632 (c) (1)] <br />(� (a) Exterior surface and floor beneath tank monitored by direct viewing <br />(b) Daily visual inspections <br />(c) Liquid level in tank to be recorded at time of inspection <br />(d) If liquid observed around or beneath primary tank, owner will determine if an unauthorized release <br />has occurred. <br />B. Mechanical or electronic monitoring [Section 2632 (c) (2)] <br />(a) Continuous monitoring system connected to an audible and visual alarm system. <br />Gol <br />