2018-542-E DEAPR - SME Soil Boring contract for former Fairview Landfill

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DocuSign Envelope ID: FE562994- 247A- 4BEF- A63A- 074755E44AEB Proposal for Waste Disposal Area Delineation Hillsborough Dump .riiwr► ID No. NONCD0000483 rwrw Task Orders 483DP -1, 2 and 3 was less than $3,000, no competing cost was solicited. S &ME personnel will accompany the utility locator while underground utilities are being located and marked. 5&ME personnel will use a handheld GPS to lay out the proposed boring locations and will coordinate with the utility locator to identify locations where proposed borings potentially conflict with underground utilities. 1.2.2 Subtask B Waste DelMeatiort To further delineate the horizontal boundaries of the estimated waste disposal area, S &ME will use a track - mounted drill rig equipped with small - diameter hollow -stem augers to install multiple soil borings at approximately 54 boring locations (WD -1 through WD -54) shown on Figure 1. S &ME solicited cost quotations for drilling services from S &ME, Inc. and SAEDACCO. S &ME provided the lower cost for the drilling services. S &ME will perform the drilling scope of services, and S &ME's quote was used to prepare the cost estimate for this work plan. Waste boundary delineation borings will be advanced to approximately 15 feet below ground surface (bgs) or until auger refusal, whichever comes first. Borings that encounter waste will be advanced through the waste to assess waste thickness, if the thickness was not determined at adjacent locaticn(s). Subsequent borings will be offset ten feet perpendicular to and away from the waste disposal area until no waste is encountered. Borings that do not encounter waste within 15 feet of the ground surface will be offset ten feet perpendicular and closer to the waste disposal area until waste is encountered. For this proposal, an estimated two offset borings (i.e. WD- 1A, 1 B) will be installed at each of the 54 pre - determined boring locations shown on Figure 1. An approximate total of 162 waste boundary delineation borings are proposed to be advanced. All boring locations will be documented using a GPS. Followirig the waste boundary determination at each of the 54 boring locations, S &ME will collect GPS coordinates and mark the boundary location in the field with a wooden stake and numbered flagging. Surveying of a final waste boundary and other surveying services (plat preparation for Notification of an Inactive Hazardous Substance or Waste Disposal Site) will be conducted under a separate'task order, if requested. hivestigutive Derived Waste Investigative derived waste (IDW) extracted from a boring will be placed back in the boring unless groundwater was encountered. Bentonite will be used to backfill borings that intersect the water table and to fill voids in borings. Impacted materials not used as fill will be drummed. Drums containing IDW will be sealed and labeled and placed on a wooden pallet within a self - standing temporary chain -link fence near the borings. Three corners of the fence will be secured with hardware. The fourth corner will be secured with chain and a padlock to allow controlled access to the fenced area. If needed, up to four composite samples of stored IDW will be collected for laboratory analysis. See attached laboratory fees spreadsheet for proposed analyses. If it has been determined that the drummed IDW does not require off -site disposal, the IDW will be spread within the waste disposal area. If sampling results indicate the IDW is hazardous, S &ME will subcontract a waste hauler to dispose the drums off -site within 90 days after field activities are concluded. Fencing and pallets will also be removed from the site. If off -site disposal of the IDW is required, S &ME will prepare a proposal for subcontracted services to dispose of the drums and submit it to the Unit for review and approval. April 12, 2018