CALL (812) 333-8888 FOR MORE INFORMATION OR E-MAIL info@copa.org
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CALL (812) 333-8888 FOR MORE INFORMATION OR E-MAIL info@copa.org | |||||||||||||||
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Meetings: CIC | |||||||||||||||
Citizens Information CommitteeMinutes of Public MeetingJuly 18, 1996 Attendees: Michael List, CIC Chair Meeting was called to order at 7:00 pm. Minutes for June were approved. Dan Hopkins- Report on the ABB water tower area. It is the last part of the ABB site on N. Curry Pike to be addressed. The area to be remediated is under the concrete and asphalt of the parking lot, and much utility work will be needed to complete the job , as well as the removal of concrete berms and stair cases. Prepartion work has begun, and the cleanup will continue through the summer. Much of the contamination is shallow, 6 to 12 inches deep, but some areas are up to 18 inches deep, and one area near the east railroad spur could go up to 12 feet deep. Work is to begin July 27. Four air monitors will be set up around the work area, and one will be placed in the adjacent mobile home park. Water spray will be used to get airborne contaminants from migrat ing, and if the monitors indicate too high a level, work will be suspended. Mitch Rice George Hegeman Hopkins Hopkins- Winston Thomas Update The digester tanks are basically ok and have several years of service left. The cracks are flexor cracks, and there is little seepage. The course to be followed is to monitor the cracks, and keep the water level down as far a possible. There were original ly lids for all four digesters, but only one is left. Sampling at WT - Data will be available the week of July 22. The tests were done with immunoassay kits, and volumetric estimates of the site were made. Lemon Lane - Meetings were held amongst the governmental parties, and a number of issues were discussed, and a variety of approaches to the water problem at Lemon Lane are being researched. Storm water control is central to any solution here, and relates to the size and capacity of the water treatment plant that is needed at Illinois Central Springs. Westinghouse has an idea of what they want to do here. The governmental parties intend to research a larger range of alternatives. One approach is to stop wa ter from reaching the bedrock and flowing through the system, thus reducing the volume leaving the IC Springs. With every major storm a slug of PCBs is stirred up and released through the springs. There is a base flow of 200 gallons/minute, and last May i t was as high as 10,000 gallons/minute. One approach is to find ways to keep the water from entering the system in the first place. The other idea here, and I am not to sure this is possible, is to pump water out of the catchment basin (the watershed around and including Lemon Lane, about 300 a cres), over the ridge to the next basin. We need to find out how much water gets into each of the sinks in the area before we can figure out if it is worth trying to retain it or divert it to another catchment basin. If the amount of water through the system can not be decreased, then a larger treatment plant will be needed. Storm water retention systems are being looked at. Our hydrologist suggested that a retention pond could be built in the area of the springs, to slow the rate of the water going to the proposed plant during high flow periods. It has been determined that for each 1/10th of an inch of rain that falls, 50,000 gallons of water run through the system. Iris Keisling: Hopkins: Meeting Adjourned Next Meeting Aug 29, 1996, 7:00 pm McCloskey Room |
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The Coaltion Opposed to PCB
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