SITE INFORMATION AND CORRESPONDENCE

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Messrs. Shareghi and Tedoose - 2 - 14 June 2007 permit cannot be written without an antidegradation analysis, and groundwater data is critical information in that analysis. During the same meeting, staff was informed that a new water treatment plant has been constructed adjacent to the existing plant. We understand that you plan to begin operating the new plant shortly, and will decommission the old plant. While we hope to work cooperatively with Mountain House CSD, please remember that failure to submit a complete RWD and obtain WDRs for the WTP is a continued violation of California Water Code Sections 13260, 13264, and 13265. The 31 May 2007 Mountain House Water Treatment Plant Project correspondence prepared by the Mountain House CSD, states a groundwater monitoring well installation workplan has been prepared and submitted under a separate cover letter. In the 5 June 2007 meeting, staff was informed the workplan was submitted. We have not received the workplan. By 21 June 2007, Mountain House CSD shall submit the groundwater monitoring well installation workplan. By 14 September 2007, Mountain House CSD shall submit a complete RWD for the WTP. The RWD shall include an analysis of groundwater conditions at the WTP and include at least two sampling events that occur at least two weeks apart. To characterize groundwater quality, the groundwater monitoring wells shall be sampled on a monthly basis once installed until WDRs are issued for the facility. The list of analytes to be monitored will be determined based on the Groundwater Monitoring Well Installation Workplan and staffs comments on the workplan. To initiate the WDR process, please submit an RWD. The RWD consists of the enclosed Form 200, a technical report that will serve as your response to Sections VI and VII of Form 200, and an application fee. The technical report must, at a minimum, address all items listed on the enclosed sheet entitled "Additional Information Requirements" and must be prepared under the supervision of a California Registered Engineer. The RWD shall also include any additional information required to explain the site-specific processes. Please include a check made out to "State Water Resources Control Board" in the amount of $872. If you have any questions, or wish to schedule a meeting to discuss these issues, please telephone Tim O'Brien at (916) 464-4616 or me at (916) 464-4732. WENDY WYELS Environmental Program Manager Enc: Additional Information Requirements Form 200 26 May 2006, Failure to Submit a Report of Waste Discharge correspondence 26 May 2006, Record of Communication W 1 usMObdenTSan JoaqulnWuunialn Houu\SWeghi 6 June 07.da