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• • MONITORING AND REPORTING PROGRAM -3- RE-MANUFACTURING LTD, RENTAL MACHINERY CO., INC., AND STANLEY S. MOORE CLOSURE OF SURFACE IMPOUNDMENT AS CLASS I LANDFILL SAN JOAQUIN COUNTY a. a report that demonstrates pursuant to §2550.8(k)(7) of Chapter 15 that a source other than the WNW caused the evidence of a release, or that the evidence resulted from an error in sampling, analysis, or evaluation, or from natural variation in ground water, surface water, or the unsaturated zone; or b. an amended Report of Waste Discharge for the establishment of an evaluation monitoring program,pursuant to §2550.9 of Chapter 15, to assess the nature and extent of the release from WMUs and to design a corrective action program meeting the requirements of§2550.10 of Chapter 15. Within 180 days of determining statistically significant evidence of a release, the owner shall submit an engineering feasibility study pursuant to §2550.8(k)(6) for corrective action program necessary to meet the requirements of§2550.10 of Chapter 15. SAMPLING AND ANALYSIS PLAN A Sampling and Analysis Plan shall be submitted to Board staff by 1 June 1995 for approval. The sampling and analysis plan shall include specific methods for surface water and ground water quality sample collection, handling, chain of custody control, analytical procedures, and field and laboratory quality assurance and quality control. PROPOSED GROUND WATER MONITORING PROGRAM The owner shall submit by 1 September 1995, a proposed revised ground water monitoring system and program. The water quality monitoring system and program shall be sufficient to demonstrate compliance,or lack thereof, with the Water Quality Protection Standard. Existing water quality monitoring stations and data can be proposed for incorporation in the revised monitoring system and program. The proposal shall include: 1. Proposed conceptual design and location of water quality monitoring points including those at the point of compliance (§2550.7); 2. Proposed monitoring parameters,constituents of concern, and their monitoring frequencies (§2550.7 and §2550.8); 3. Proposed concentration limits and/or methods for establishing concentration limits (§2550.4); and, 4. Proposed statistical methods for determining statistically significant evidence for a release from WMUs.