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` k <br /> Monitoring Report Compliance Chec -list <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 <br /> (Sept 93/Aug 97) Monitoring Parameter,and COCs <br /> (if required) samples and analyzed? <br /> in. Have any groundwater concentration X See comments below. <br /> limits been exceeded? If yes;identify <br /> in comments. <br /> n. Is there a description and graphical X <br /> presentation of groundwater flow <br /> direction and gradient? <br /> o. Monitoring Wells: Is there a X <br /> description,method,and time <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 /> VOCs detected in MW-5 include Freon 12 and PCE. PCE has an increasing trend and was measured at <br /> 3.94µg/1. Laboratory reporting limits are higher this quarter than in 4th Quarter 1999, and in fact exceed <br /> some water quality goals for certain constiittents (eg. The laboratory RL for benzene is 2.00 µg/1,whereas <br /> the primary MCL for benzene is 1 µg/1). The analytical method used for the VOC analyses is 8260A this <br /> quarter; however it was 8260B during the 4th Quarter of 1999. Laboratory should analyse for VOCs using <br /> method 8260B with the lower reporting limits when possible. Attachment D to the WDRs indicates the <br /> VOC constituents that are to be included for analyses and these include: Acetone. acetonitrile, acrolein, <br /> acrylonitrile, allyl chloride. These compounds were included in the 4Q99 lab report,but not in the 1 Q99 lab <br /> report. County should discuss with the consultant and lab. <br /> RWQCB Staff Signature: <br /> Date: 5-//o `azo <br />