SITE INFORMATION AND CORRESPONDENCE_2004-2019

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On June 25`' and June 27`h , 2007, almost another year later from the Aqua Science Engineers last report of testing, URS Group, Inc. had BlaineTech Services, Inc. do additional testing of the domestic wells. The samples obtained by URS Group, Inc. were submitted to Curtis & Thompkins Laboratories in Berkeley, CA for analyzation. With just a couple of exceptions the concentrations were generally consistent with the previous sampling. I attach page 5 and 6 of the URS report under Groundwater Monitoring Results for your information. The conclusion of URS's report,page 5 and 6, and also the attached Figure 3 of URS's monitoring results are attached as well. As can been seen from their report(all parties have the full report), MTBE on all monitoring sites were below the secondary 5.Oppb with the exception of Monitoring Well MW-16 (off site). Further, the above secondary sites were just four(4) domestic wells; 17821, 17926; 1933, & 17950, respectively. As noted by URS those wells were as follows: 17821 38 17926 16 17933 7.2 17950 43 and, the prior test of those particular wells(see ASE Domestic Well Report above) as follows: 17821 36 17926 42 17933 2.7 17950 43 so, as to the above four wells, which are above the secondary limits, two went down. The exception is 17933 which went up only slightly from 2.7 to 7.2. The last one was almost the same(17821 with 38 & 36 respectfully). Therefore,a careful look at the history of the testing of the monitoring wells conclusively indicates a clearly defined reduction in concentrations with only three left with any real significant accumulations to monitor. In light of the history of the testing of the site,both on site and off, the request and recommendation to install additional groundwater monitoring wells to define the lateral and vertical impacted groundwater as stated on page 6 of URS's report seems a waste of resources and unnecessary expense which will probably not result in any more useful information and or that will help alleviate the last areas of concern. Also, in the near past, your agency(Regional)agreed with Mr. Guinta that full monitoring each quarter of each well was not necessary any longer; please see letter of James Barton attached hereto. Although the consider- ation of Mr. Barton was well appreciated and did help the expense, other current monitoring needs to be further reduced. Finding the so-called"plume"which I believe is the purpose of your lateral and vertical proposed additional test drilling will not likely produce any valid remedial information. Given enough time,the last of the small concentrations will likely restore them- selves to safe levels without the necessity of further remedial events. As you know, the small amount of deviation shown in the recent test results is normal and 2