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Hamilton Body Shop /Hamilton Towing March 27, 2012 Page 7 of 10 :14001:41111►f0 Upon receipt of the laboratory analyses, data will be reviewed and tabularized. Comparison of the data for each respective chemical constituent will be made to the Risk Integrated System of Closure (RISC) Default Closure Values for Residential and Industrial /Commercial Properties. Upon completion of the initial data review, a "Letter Report" will be prepared which presents the sample collection and analytical methodologies used during the field phase of the assessment. Copies of the sample location maps, tabulated data and comparison to RISC Default Closure Values will also be incorporated. Recommendations for any additional assessment activities will be made for review and comment. TASK 5 — Dye Trace for existing Trench Drains Depending on whether or not the identified trench drains within the buildings present at the 910 -912 S. Lafayette Blvd. and 901 -917 S. Lafayette Blvd. properties are free flowing; Wightman Petrie may be able to determine the location of discharge through the introduction of a biodegradable dye. We note that if the drains are not free flowing, and tend to back -up, then introduction of the biodegradable dye serves no purpose. At that point, it becomes more logical to wait until demolition of the building, as opposed to incurring the expense of drain cleaning. Should the drain system be confirmed as free flowing, the direction of flow of the existing municipal sanitary sewer must be determined, and an immediately downgradient manhole opened for observation. Once free flow, and a point of observation are established, the dye is introduced to the trench drain, and its presence (after delay) is documented as present, or absent, within the downgradient manhole flow. If absent, then other potential points of discharge other than the municipal sanitary sewer system exist, and should be investigated for the presence of potential contamination. SCHEDULE Wightman Petrie proposes to commence site investigation activities within one (1) week of receipt of notification to proceed, depending on weather, utility clearance and Geoprobe availability. Our Ground Penetrating Radar Survey work will be completed prior to the initiation of soil boring installation activity, and can commence immediately following the receipt of Authorization to Proceed. Once a specific date for the field component of the Phase II has been established, Wightman Petrie will notify the client. Upon mobilization, we anticipate completion of the Geoprobe sampling requiring two (2) days, although a third day may be necessary depending on the actual depth to groundwater. Laboratory analyses will be completed by Pace Analytical on standard one -week turnaround from receipt by the laboratory. Our initial discussion of results will occur within three (3) days of receipt of all laboratory analytical results. Our written "Summary Letter Report" will be submitted within two (2) weeks of the initial conference. COST ESTIMATE An ESTIMATED COST for Scope of Services, as presented herein, is summarized below. Please note that the Estimated Costs for the Phase II Reporting is based upon the submittal of a single Phase II Environmental Site Assessment Report, as opposed to property specific Phase II Reports. Phase I Updates ($1,300 /Report — two of three parcels) SUBTOTAL $2,600 802 -812 S. Lafayette Blvd. Four Soil Borings (assume 25 ft. to groundwater) 4 VOC analyses @ $95 /each $380 4 cPAH analyses @ $95 /each $380 Two Groundwater Samples 2 VOC analyses @ $95 /each $190 2 cPAH analyses @ $95 /each $190 Percent Moisture $100 Ground Penetrating Radar Survey for area of former USTs $600