Professional Services Agreement - Indiana Finance Authority Indiana Brownsfield Program

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,tsn rt t � � ,t, 6Lr r_aPy- 1- E1- L'�eti�rrromile.wUll Assessment. i�bo�alagre�a�ro�al 4�aarxa��r �°:a�a� o e�a��a gag a�roaai �'it 1tAcri��i��M�a a Services, Former Sev ".�4 Manathon Service 'Sgion 1"raerlity in South Bend h)di m N d7_9, tl � Page 4 health and safety plan (HASP) under the Occupational Health & Safety Administration (OSHA) 29 CFR 1910.120 for review and approval of IBP staff and any applicable state and/or federal agency. All site activities will be done in accordance to the work plan and HASP designed for the project. All site activities will be done in accordance with ASTM, IDEM and USEPA applicable guidelines. Prior to removal activities, Heartland will contact the appropriate utility companies to locate and mark site underground utility conduits/lines. Off -site utilities will also be located if determined necessary. For purposes of this removal it is not anticipated that the services of a private utility locater will be necessary. The GPR survey scheduled to be completed as part of the site activities will also be utilized to assist in marking private utilities at the site. As part of environmental services provided, Heartland will conduct oversight for the removal of the UST system at the site, including the USTs and associated piping. Additionally, any residual liquids and sludge from the tanks and product lines will be cleaned and containerized for disposal prior to the removal of the USTs. It is anticipated that liquid/sludge material to be removed will not exceed 1,500-gallons. It should be noted that, according to images reviewed and a site reconnaissance by Heartland, the fuel dispensers are no longer present at the site. The areas around the historic former gasoline dispenser island areas will be explored as part of the provided UST system removal services to confirm that all former dispenser island structures have been removed. Heartland will collect confirmation samples as required by IDEM UST guidance, which require one confirmation soil sample per 20 feet of sidewall, one confirmation soil sample on the bottom of the tank pit under both ends an individual UST (for USTs less than 10,000-gallons in size), one confirmation sample per every 20 linear feet of product line, one confirmation sample underneath each fuel dispenser island, and one groundwater sample per tank pit. Field oversight activities will include coordination with the selected UST removal subcontractor and the laboratory, as well as health and safety oversight. Field oversight will also include screening of both bottom and sidewall samples. Based on field observations, Heartland will evaluate the presence of impacts to soil. Heartland will work closely with the IBP to document impacts present and will advise the IBP during the course of the UST removal should it be necessary to over -excavate encountered impacted soils within and surrounding the tank pit. Petroleum impacted soils determined to exhibit the highest petroleum impacts will be over -excavated, if determined necessary. Over -excavation of impacted soils will not exceed 1,500 tons, unless determined necessary based on field observations and further authorized by the IBP. Over -excavated soils will be removed and disposed of as impacted waste at an authorized landfill. After completion of UST removal and any necessary soil over - excavation, the UST/soil excavation pit will be backfilled with granular, compactible material and finished to grade with at least four inches of stone. Soil confirmation samples will be collected, and samples will be submitted to the laboratory under proper chain -of -custody protocol. Soil samples collected will be submitted for laboratory analysis of volatile organic compounds (VOCs) using USEPA SW-846 Method 8260, polycyclic