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Monitoring Report Compliance Che list <br /> P P <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 X MW-1,MW-2, and MW-3 have <br /> (Sept 93/Aug 97) Monitoring Parameter, and COCs been dry since 1990. <br /> (if required) samples and analyzed? <br /> Increasing trends for electrical <br /> m. Have any groundwater concentration X conductivity and Nitrate found in MW- <br /> limits been exceeded? If yes, identify 4.VOCs detected in MW-5.Increasing <br /> in comments. trend for cis-1,2-Dichloroethene, <br /> Tetrachloroethene,and Vinyl Chloride. <br /> n. Is there a description and graphical Acetone detected in S13-1. <br /> presentation of groundwater flow X <br /> direction and gradient? <br /> o. Monitoring Wells: Is there a <br /> description,method,and time X <br /> of water level measurement and <br /> well recovery time? <br /> p. Purging: Is there a description X <br /> of the purging method,purge <br /> pump and its placement, and <br /> field parameters? <br /> Additional Comments and Recommendations: <br /> MW-1, MW-2, and MW-3 have not been sampled since March 1990. <br /> Gas control system running since late May 2001. <br /> High levels of chloride,nitrate and SO4 in MW-4 and MW-5. High levels of chloride and SO4 in SB-l. <br /> Acetone, chloroform, dichloroethene, dichloropropane,methyl tert-butyl ether detected in MW-5,but below <br /> concentration limits. Benzene, dichlorodifluoromethane, methylene chloride, tetrachloroethene(4.55 ppb), <br /> toluene,trichloroethane,trichlorofluoromethane, vinyl chloride(0.714 ppb),m,p-xylene, and o-xylene <br /> detected in MW-5 above concentration limits. <br /> High levels of acetone detected in SB-1 above concentration limit. <br /> Some of these constituents were detected in the field and/or trip blanks. <br /> High levels of chloride, sulfate and nitrate detected in surface water,but nearly equal upstream and <br /> downstream. <br /> RWQCB Staff Signature: <br /> Date: /zz/o/ <br />