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Mr. David Lieb • 3 _ • 22 July 2004 <br /> Marley Cooling Tower Facility, Stockton <br /> 3. Table 1. Demonstration System Monitoring Schedule. Phase 2 sampling. In addition to the <br /> proposed sampling, which includes sampling as required by the current NPDES permit, we <br /> request influent and effluent samples for the following parameters be collected and submitted for <br /> analyses upon reaching the full flow (either Day 10 or 13): sulfate, bicarbonate, chloride, total <br /> chromium, copper, arsenic, temperature, dissolved oxygen, residual chlorine, hardness, total <br /> suspended solids, turbidity, and total iron. We believe this will provide an additional data point <br /> and will be useful for evaluation. <br /> 4. Upon completion of the Demonstration study, operation of the groundwater extraction and <br /> treatment systems should be continued in the current mode of operation (IX and ECS systems). <br /> Please provide an estimated schedule for submittal of the Demonstration study results report to <br /> Regional Board and DTSC. <br /> 5. Based on the successful results from the Demonstration study, if SPX-Marley wishes to replace <br /> the current D{and ECS treatment systems, please note that revisions to the NPDES permit, <br /> design documents of a permanent system, operation and maintenance documents, and possibly <br /> decision documents such as the Remedial Action Plan may be required. Please check with DTSC <br /> for any modifications in the Site Remedial Action Plan(RAP) that may be required if SPX- <br /> Marley wishes to replace the existing LY and ECS treatment systems. <br /> 6. At least five days prior to start of fieldwork,please notify our office so that we may make <br /> arrangements for a site visit. <br /> This letter serves as Regional Board concurrence for implementation of the Demonstration Study <br /> Workplan contingent upon your acceptance of our comments. We look forward to reviewing the Study <br /> results, evaluation and recommendations. If you have any questions or concerns,please contact me at <br /> (916) 464-4678 or email at Talanksna rb5s.swrcb ca eov. <br /> Sudhakar Talanki, P.E. <br /> Water Resources Control Engineer <br /> cc: Mr. Mohammad,Bazargani, TRC, Concord <br /> Mr. Dan McGrade, SPX Corporation, Charlotte, North Carolina <br /> Mr. Steven Ross, DTSC, Sacramento <br /> Mr. Harlin Knoll, San Joaquin County Environmental Health Division, Stockton <br />