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ORDER N0.R5-2018-0017 17 CONDITIONAL WAIVER OF WASTE DISCHARGE REQUIREMENTS FOR DISASTER-RELATED WASTES WITHIN THE CENTRAL VALLEY REGION surface impoundments shall be diverted from the location of the temporary surface impoundment through implementation of MMs/BMPs for storm water control and conveyance. 4. Liquid hazardous wastes or"restricted hazardous wastes" shall not be discharged to temporary waste piles or temporary surface impoundments. 5. When applicable, owners/operators of temporary surface impoundments not located at a regulated waste disposal facility shall obtain coverage under the General Permit for Storm Water Discharges Associated with Construction Activities, and prepare a Storm Water Pollution Prevention Plan to obtain coverage under this Conditional Waiver. 6. Owners/operators of temporary surface impoundments not on regulated facilities shall ensure that only disaster related waste streams are discharged into temporary surface impoundments. 7. All visible portions of synthetic liner systems in temporary surface impoundments shall be inspected weekly, or daily as necessary, until all free liquid is removed from the surface impoundment as part of closure.a If, during the active life of the temporary surface impoundment, the wastes are removed and the bottom of the impoundment is cleaned down to the liner, an inspection shall be made of the bottom of the liner prior to refilling the impoundment. 8. Owners/operators of temporary surface impoundments not on regulated facilities shall post at least one clearly visible sign listing the following minimum information: a) project name, b) brief project description, and c) operator name and phone number. The sign or signs shall be in English and any other language common in the local community to more effectively communicate the minimum contact information. The sign(s) shall be maintained as required to keep them legible and shall remain in place while temporary surface impoundments remain on site. 9. Wastes discharged to temporary surface impoundments not at regulated waste management or disposal facilities, together with any materials used to contain the temporary surface impoundments, shall be removed from the site as expeditiously as possible and the site shall be restored to its original state. 10.Owners/operators of temporary surface impoundments not on regulated facilities shall submit a Notice of Termination to the Central Valley Water Board within 10 working days of completing removal of all disaster related wastes and restoring the site to its original condition. The Notice of Termination shall contain the information listed in Attachment B of this Conditional Waiver. e See Health 8 Sat. Code, §25122.7. See Cal.Code Regs.,tit.27,§21400,subd. (a).