FIELD DOCUMENTS AND WORK PLANS 2000-2003

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WASTE DISCHARGE REQUIREM ORDER NO.R5-2003-XXXX . . SPXCORPORATION,MARLEY CO ING TOWER COMPANY 8 IN SITU GROUNDWTER REMEDIATION PILOT STUDY, SAN JAOQUIN COUNTY TENTATIVE (1). A narrative description of all preparatory,monitoring, sampling, and analytical testing activities for the groundwater monitoring. The narrative shall be sufficiently detailed to verify compliance with the WDR,the attached MRP, and the Standard Provisions and Reporting Requirements. The narrative shall be supported by documenting flow rates, and total volume of calcium polysulfide and ethanol injected, and parameters measured. (2). An assessment of calcium polysulfide and ethanol discharge to the aquifer, and results of all sampling; (3). Copies of all laboratory analytical report(s); (4). A calibration log verifying weekly calibration of any field monitoring instruments (e.g.,pH, dissolved oxygen meter, etc) used to obtain data; (5). An evaluation of the changes in aquifer geochemistry including the extent of hexavalent chromium reduction, assessment of changes in mobility of other metals including arsenic, and changes in sulfate. (6). An analysis of whether the injected calcium polysulfide/ethanol and any breakdown or byproducts is being captured by the extraction system or is continuing to spread; (7). Construction and proposed location details for the Phase 2 injection and temporary monitoring wells; (8). Cumulative data tables containing the water quality analytical results. 5. The Discharger shall comply with the attached MRP No. R5-2003-XXXX,which is part of this Order, and any revisions thereto as ordered by the Executive Officer. Modifications to MRP No. R5-2003-XXXX may be made to continue process monitoring if any parameter does not return to pre-injection conditions. 6. The Discharger shall comply with the"Standard Provisions and Reporting Requirements for Waste Discharge Requirements," dated 1 March 1991, which are by reference, a part of this Order. This attachment and its individual paragraphs are commonly referenced as "Standard Provision(s)." 7. The Discharger shall comply with all conditions of this Order, including timely submittal of technical and monitoring reports as directed by the Executive Officer. Violations may result in enforcement action, including Regional Board or court order requiring corrective action or imposing civil monetary liability, or in revision or rescission of this Order. 8. Should the evaluation of the pilot test data reveal adverse effects on groundwater quality due to calcium polysulfide/ethanol injection,the Discharger shall notify the Regional Board within 24 hours, followed by a written summary within two weeks. The Discharger shall clean up and abate these effects, including extraction of any byproducts. The Discharger shall provide a status summary report within two months detailing activities to implement the contingency plan.