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Home My WebLink AboutDSHW-1990-002562 - 0901a06880157944^ ::^-nFI\/FD DSHW TN 1990-20790 i jtph f^f?c':^ o\ n:^aith The Hercules Environmentai Management Program Fact ^ne'et No. 3 August 20, 1990 In March 1989, Hercules issued a continuing series of fact sheets conceming our enviroranental management program. The fact sheets described the discovery of traces of industrial solvents in ground water n^ar 4100 South and 7200 West streets. Private wells near that area were sampled and found to be clean. At that time, Hercules installed two additional monitoring wells along 4100 South, and one north of 4100 South on Hercules-o«med property. This fact sheet presents results from the new monitoring wells, and describes current and future actions. The two closest private wells that were tested last spring were re-sampled in January and March 1990. Those wells are still clean, and will be sampled on a semi-annual basis in the future. Samples from the newly-installed wells contained small amounts of some of the solvents previously detected in the test well near the intersection of 4100 South and' 7200 West streets. The off-site well, approximately 800 feet north of 4100 South street, contained TCE (trichloroethene), DCE (1,1-dichloroethene), and TCA (1,1,1-trichloroethane), although only TCE was found at a level above Federal and State drinking water standards. Hercules has completed a computer modeling study to help predict the location, concentration, and movement of the plume of ground water containing the solvents and have taken further investigative actions to delineate this ground water plume including additional on-plant and off-plant monitoring wells. Hercules is presently working with the State of Utah conceming these actions and for an appropriate solution to the problem. The source of the ground water plume is probably linked to practices that took place during the 1960s - 1970s. Since few records exist from this period, Hercules has attempted to locate a source of the solvents using geophysical, aerial methods, and have drilled and analized soil samples. All surveys conducted to-date have failed to find any indication of buried materials from which solvents could have leaked. Based on these surveys, we are speculating that solvents may have been flushed on the ground during a past manufacturing process practice, sometime before current environmental laws were enacted. Future fact sheets will provide updates 'sis these studies progress. As before, Hercules encourages the interaction of the surrounding communities, If you have any questions or comments, "or would like to be added to our mailing list, please contact one of the people below: 1 . ' • Connie Callahan Community Relations Coordinator Public Affairs Department Utah Department of Health P.O. Box 98 Bureau of Solid and Hazardous Waste Magna, Utah 84044 P.O. Box 16690 Mailstop: PA1A5 288 North 1460 West 251-1033 Salt Lake City, Utah 84116 538-6170 7083s HERCULES Hercules Incorporated P.O. Box 98 Magna, UT 84044 1ST CLASS U.S. POSTAGE PAID PERMIT NO. 41 MAGNA. UT 84044 i