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The following is an itemized list of RCRA hazardous waste violations that have not been addressed for PNP Stockton #80 as of May 19, 2021. Open violations from October 101 2019 inspection and all of the following information: (A) material of construction; (B) material thickness and the method used to determine the thickness; (C) description of tank system piping (material, diameter); (D) description of any internal and external pumps; and (E) sketch or drawing of tank including dimensions. (3) documented age of the tank system (if tank was previously used), if available, (otherwise, an estimate of the age); (4) description and evaluation of any leak detection equipment; (5) description and evaluation of any corrosion protection equipment, devices, or material; (6) description and evaluation of any spill prevention or overfill equipment; (7) description and evaluation of secondary containment for the tank system (secondary containment must meet minimum standards as specified in subsections 0)(1) through 0)(3) of this section) including applicable secondary containment for ancillary equipment as required in subsection 66265.193(0; (8) hazardous characteristics of the waste(s) that have been or will be handled; (9) prior to placing a new tank system or component in use, an independent, qualified installation inspector or an independent, qualified, professional engineer, registered in California, either of whom is trained and experienced in the proper installation of tank systems, shall inspect the system or component for the presence of any of the following items and document in writing the results of the inspection: (A) weld cracks or breaks; (B) scrapes of protective coatings; (C) corrosion; (D) any structural damage or inadequate construction or installation such as cracks, punctures, damaged fittings. All discrepancies shall be documented in the assessment and remedied before the tank system is placed in use. (10) all new tanks and ancillary equipment shall be tested for tightness prior to being placed in use. The results of the test(s) shall be documented in this assessment. Tank system integrity or leak test requirements must be in compliance with all local requirements. Prior to conducting a tank system integrity test or leak test, contact local agency staff for local requirements. (11) estimated remaining service life of the tank system based on findings of subsections (k)(1) through (k)(10), Title 22 California Code of Regulations section 66265.1920) (1) tank system must have secondary containment capable of containing 100 percent of the contents of the tank and ancillary piping volume; and (2) if the tank system is exposed to precipitation, the secondary containment system must have sufficient capacity, in addition to that required in subsection 0)(1) of this section, to contain run-on and infiltration from a 25 -year, 24-hour rainfall event; (3) tank system secondary containment shall be provided with a leak detection system that is designed and operated so that it will detect either the failure of the primary and secondary containment structure or any release of hazardous waste or accumulated liquid in the secondary containment system within 24 hours, or at the earliest practicable time it the existing detection technology or site conditions will not allow detection of a release within 24 hours. Title 22 California Code of Regulations section 66265.193(f) (f) Ancillary equipment shall be provided with full secondary containment (e.g., trench, jacketing, double -walled piping) that meets the requirements of subsections (b) and (c) of this section except for: (1) aboveground piping (exclusive of flanges, joints, valves, and connections) that are visually inspected for leaks on a daily basis; (2) welded flanges, welded joints, and welded connections that are visually inspected for leaks on a daily basis; (3) sealless or magnetic coupling pumps and sealless valves, that are visually inspected for leaks on a daily basis; and (4) pressurized aboveground piping systems with automatic shut-off devices (e.g., excess flow check valves, flow metering shutdown devices, loss of pressure actuated shut-off devices) that are visually inspected for leaks on a daily basis. CORRECTIVE ACTION: Have a qualified Professional Engineer update the tank assessment and add the missing sections. Provide a corrective action statement and support ing documentation to the San Joaquin County Page 3 of 4