R2003-93 AUTHORIZING EXECUTION OF AGREEMENT

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Decatur,City of,Mound School Bodine Project#114675 Phase II Subsurface Investigation Report August 29 2003 During the installation of borings, Bodine encountered several delays associated with the Decatur Public School District's repair and maintenance of the Local Area Network System. As a result,the sub-surface investigation had to be conducted over several days to coordinate with the individuals performing the repairs. 5.1 Field Investigation Summary: On July 28, 2003, Bodine mobilized service vehicle,personnel and equipment to the site for the purpose of completing subsurface investigations inside of the Mound School. Bodine had previously established locations based upon design drawings obtained from the Decatur Public School District, Attachment A. In addition to review of facility drawings, Bodine obtained access to the crawl space area to determine if utilities may be impacted by the installation of borings. Bodine could not identify any subgrade utilities running through the proposed boring locations. Bodine utilized a wet-cutting six inch concrete drill to penetrate the concrete slab floors for each location. After reaching the base of the concrete,the plug was removed and 6- mil polyethylene was secured to the floor to avoid impacts to interior surfaces. Bodine utilized an electric powered hammer drill and several flights of two inch stainless steel augers to advance borings inside Mound School. This equipment was selected to overcome site access limitations since this equipment can be operated within the vertical, horizontal and sma11 area limitations. 5.2 Data Collection: As borings were completed, Bodine conducted field observations of the unconsolidated geologic material and screened the cores with a PID at 6 inch intervals. During the investigation,no readings above background were indicated for any of the borings. The samples were selected from intervals which indicated the highest potential for contamination and consistent with the recommendations of the IEPA LUST Program. Since the UST was reported to contain fuel oil, Bodine selected the indicator contaminates for the IEPA LUST Program, BTEX and PAHs. Soil samples for BTEX analysis were collected first, utilizing Terracore samplers with sodium bisulfate and methanol preservation, SW-846 Method 5035/8260. The PAH samples were collected last and placed into 9 ounce laboratory certified glass containers. Sample containers were immediately sealed, labeled and placed into a cooler containing blue ice. Sample identification numbers correspond directly to the boring locations indicated on Figure 1. 8 BODINE ENVIRONMENTAL SERVICES, INC.