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Monitoring Report Compliance CIOAist • <br /> Discharges Regulated by Title 27 and/or Part 258 <br /> RWQCB <br /> Reference Parameter Yes No N/A Reviewer Comment <br /> WDRs/MRP/ Groundwater Monitoring <br /> Standard <br /> Provisions 1. Are all groundwater Field Parameters <br /> (Sept 93/Aug 97) Monitoring Parameter, and COCs X <br /> (if required) samples and analyzed? <br /> in. Have any groundwater concentration <br /> limits been exceeded? If yes, identify X <br /> in comments. <br /> n. Is there a description and graphical <br /> presentation of groundwater flow <br /> direction and gradient? X <br /> o. Monitoring Wells: Is there a <br /> description, method, and time <br /> of water level measurement and X <br /> well recovery time? <br /> p. Purging: Is there a description <br /> of the purging method,purge X <br /> pump and its placement,and <br /> field parameters? <br /> Additional Comments and Recommendations: <br /> The groundwater elevation in OB-2 is anomalously high during the first quarter of 2001. <br /> Trends noted in the time series plots include: <br /> Sodium. Slight upward trends noted in OB-2 and OB-3, but down during last two quarters. OB-16 upward. <br /> Chloride. OB-2 downward during last 3 years. <br /> Sulfate and Chloride. Upward in OB-1, increase between 3Q and 4Q 1999. <br /> Sulfate. OB-24, OB-25 and TH-4 upward, <br /> Nitrates. Decrease noted in all wells since December 1997. <br /> Attachment D includes multiple copies of the same 2 pages. <br /> RWQCB Staff Signature: 6 l <br /> Date: 15 May 2001 <br />