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PQUIREMENTS ORDER NO. WASTE DISCHARGE R FORWARD INC. FOR CLOSURE OF FRENCH CAMP MUNICIPAL SOLID WASTE LANDFILL SAN JOAQUIN COUNTY D. CONSTRUCTION SPECIFICATIONS 1. The Discharger shall submit for Executive Officer review and approval prior to construction, design plans and specifications for closure construction, that include the a Construction Quality Assurance Plan meeting the requirements of Title 27 CCR Section 20324. 2. The landfill cover shall be constructed in accordance with the following design: The prescriptive standard design which consists of a lower compacted foundation soil layer that is a minimum of two feet thick with a minimum relative compaction of 90%. Immediately above the foundation layer, and in direct and uniform contact with it, shall be a minimum one foot thick compacted clay low-conductivity layer with a hydraulic conductive less than 10-6, which is immediately overlain with a minimum eighteen inch thick layer of loosely compacted soil satiable for vegetation. leachate collection and removal system. 3. The Discharger may propose changes to the cover system design prior to construction, provided that approved components are not eliminated,the engineering properties of the components are not substantially reduced, and the proposed liner system results in the protection of water quality equal to or greater than the design prescribed by Title 27 and this Order. The proposed changes may be made following approval by the Executive Officer. Substantive changes to the design require reevaluation as an engineered alternative and approval by the Regional Board. 4. Construction shall proceed only after all applicable construction quality assurance plans have been approved by Executive Officer. 5. Within 90 days after completion of construction of the cover,the final documentation required in Title 27 CCR Section 20324(d)(1)(C) shall be submitted to the Executive Officer for review and approval. The report shall be certified by a registered civil engineer or a certified engineering geologist. It shall contain sufficient information and test results to verify that construction was in accordance with the design plans and specifications, and with the prescriptive standards and performance goals of Title 27. 6. A third party independent of both the Discharger and the construction contractor shall perform all of the construction quality assurance monitoring and testing during the construction of a landfill final cover system. 7. Closure shall not proceed in the absence of closure waste discharge requirements.