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STS Consultants Ltd. Consulting Engineers 2405 Annapolis Lane, Suite 280 Minneapolis, Minnesota 55441 (612) 559-1900 March 9, 1987 Mr., Ron Backls The Shelard Group 7825 Washington Ave. S. Suite 700 Bloomington, MN 55435 STS Project 94039 Re: Rice Street Retail Center in Roseville, Minnesota Dear Mr. Backus: As requested by you on March 3, 1987, we have completed an air photo evaluation of the proposed site of the Rice Street Retail Center to be located on the west side of Rice Street north of County Road B2 in Roseville, Minnesota. During our subsurface exploration report dated October 14, 1986, several of the borings encountered soils which had an unnatural chemical odor. Subsequently, soil samples were submitted to Interpoll Laboratory for chemical testing to determine the presence of benzene, toluene, xylezne, trichloroethylene and inethyl ethyl ketone which area constituents of gasoline, diesel fuel and solvents typically or :frequently used. None of those constituents were found in tiae3 .soil samples as reported to you on November 6, 1986. In response to your most recent request, we reviewed air Photos of the site taken in 1940, 1953, 1957, 1974, 1980 ane 1985. The earliest th,vee as well as the 1980 photographs ,are available at the Wilson Library on the University of Minne- sota campus. The 1974 and 1985 photos -,re availahle at the Roseville City Mall engineering office. Based on the photo- graphs, the retail center site was used for agricultural purposes in 1940, appearing to be a partially harvested hay field in June of 1940. In 1953, the site was vacant and uncultivated. In 1957, the site had been partially developed at the east and, with tite construction of two small rectangular build- inc3s, These appear to be a gas station or service station setting based on the traffic patterns in tile) surrounding area. In the photograph two trucks were parked to the near north of the buildings. It was apparent that recent fill material had been placed within much of the area west of nice Street between County Road 82 and Tr4ansit Avenue. The fill materials did not encroa h upon the existing pond area to tile;