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City of South Bend <br />February 2, 2009 <br />Page 2 of 10 <br />PROPOSED SCOPE OF SERVICES <br />WPI will begin the site investigations by attempting to confirm whether the interior floor drains are <br />connected to the City of South Bend's municipal sewer system. WPI will place the dye tablets in the floor <br />drains and direct a large amount of water into the lines. WPI will attempt to verify the municipal <br />connection by looking for the dye in the nearby sewer manholes. If the drains connection to the <br />municipal sewer system is not verified, WPI will recommend an additional soil boring in the vicinity of the <br />drain. <br />Due to the unknown location and status of the underground storage tanks, WPI proposes to conduct a <br />ground penetrating radar (GPR) survey on certain areas of the subject properties. This survey will be <br />utilized to determine whether or not any tanks are still present, and help pinpoint sample locations by <br />potentially finding exact past locations of previously removed tanks. If any tanks are still present, WPI <br />recommends that the tanks be removed from the ground according to all applicable regulations. A <br />sampling plan for the remainder of the area may be modified once the GPR survey is completed. WPI <br />will verbally report the findings of the GPR to the City. <br />The soil and groundwater samples will be obtained by using a Geoprobe unit. The Geoprobe is a truck- <br />mounted, hydraulically activated sampling device that pushes a probe into the ground at approximately <br />four-foot intervals. Pushing of the probe can proceed to any desired depth at which soil and /or <br />groundwater samples can be collected. The soil samples will be initially scanned using a Photoionization <br />Detector (PID). Each Geoprobe location will be converted into a temporary well for the purpose of <br />collecting a groundwater sample from the upper portion of the saturated zone. The collection of <br />groundwater samples from the upper portion of the saturated zone. The collection of groundwater <br />samples will involve the insertion of a 1-inch PVC slotted screen and riser into the borehole created by <br />the Geoprobe. Once inserted, WPI will attempt to place a sand filter around the PVC screen to assist in <br />the filtering of suspended solids. A minimum of five well volumes of groundwater will be removed from <br />the well prior to initiating sampling. Once the groundwater sample has been collected, the well will be <br />allowed to recharge and a measurement of the depth to groundwater will be noted. Soil and <br />groundwater samples will be submitted to the laboratory for analysis of suspected potential <br />contaminants. WPI will coordinate with the utility location services to ensure that the proposed boring <br />locations are not located near any utilities. <br />The drums of hazardous or petroleum waste cited in the Phase I ESA reports will be further investigated <br />and properly disposed of according to the Indiana Department of Environmental Management and the <br />Environmental Protection Agency's requirements if the site owners will not remove them. WPI will <br />contact the City with a disposal plan once the drums have been assessed. <br />