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WASTE DISCHARGE REQUIREMENTS ORDER NO.R5-2003-0049 -18- FORWARD INC.AND ALLIED WASTE INDUSTRIES FOR OPERATION OF FORWARD CLASS fl LANDFILL SAN JOAQUIN COUNTY 5. Construction shall proceed only after all applicable construction quality assurance plans have been approved by Executive Officer. 6. Following the.completion of construction of a Unit or portion of a Unit, and prior to discharge onto the newly constructed liner system, the final documentation required in §20324(d)(1)(C) of Title 27 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 geologgist: It shall contain sufficient information and test results to verify haat construction was in accordance with the design plans and specifications, and with the prescriptive standards and performance goals of Title 27. Testing shall include a liner leak detection test conducted after installation of the drainage layer and the operations layer. 7. 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 liner system. 8. If monitoring reveals substantial or progressive increases of leachate generation above the design leachate flow volume by the Unit or portion of the Unit, such that the depth of fluid on any portion of the LCRS (excluding the leachate removal pump sump) exceeds 30 cm, the Discharger shall immediately notify the Board in writing within seven days. The notification shall include a timetable for remedial or corrective action necessary to achieve compliance with the leachate depth.limitation.. 9. Any WMU that will not receive waste over the winter rainy season (November 1 through March 30)shall be graded to shed stormwater(at least a 3% grade), maintained to prevent ponding and have an enhanced intermediate cover installed. The enhanced intermediate cover shall.consists of one foot of clayey soil.compacted to achieve a hydraulic conductivity of 10-5 cm/sec or some other equivalent hydraulic barrier overlain by an erosion layer composed of one foot of loosely compacted soil. 10. Closed landfill modules shall be graded to at least a three-percent(3%) grade and maintained to prevent ponding. E. D1ETFCTION MONITORING SPECIFICATIONS 1. The Discharger shall comply with the detection monitoring program provisions of Title 27 for groundwater, surface water, soil-pore gas, and the unsaturated zone, and in accordance with Monitoring and Reporting Program No. R5-2003-0049. 2. The Discharger shat I provide Board staff a minimum of one week notification prior to commencing any field activities related to the installation, repair, or abandonment of H d 0 H090£££9 '0N/99:£l 'iS/H: t 1900 O l WNW Wpad