Agenda - Council - 01/24/2017 - Laserfiche WebLink

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City of Ramsey Proposal QTB050246 January 19, 2017 Page 2 Scope of Work For purposes of this proposal, we are assuming the following scope of services will be performed: Task 1: Phase II ESA Data obtained from the Phase II ESA will be used to determine the need for regulatory liability assurances (e.g., No Association Determination for non-petroleum related contaminants). The Phase II ESA field work is expected to take one to two days to complete.As part of the Phase II ESA, Braun Intertec will complete the following: • Clear public utilities using Gopher State One Call, and retain a utility locator to evaluate the boring locations for potential private utilities. • Advance twelve (12) soil borings at the Site with continuous soil sampling. The borings will be advanced using hydraulic probe-type drilling equipment. • Five (5) of the borings will be advanced to a depth of approximately 30 feet below ground surface (bgs), for the purpose of collecting soil and groundwater samples. The soil boring locations will be selected to assess the vicinity of potential former source areas and in up and down-gradient portions of the Site. Groundwater is expected to be present at a depth of approximately 20-25 feet below ground surface (bgs), with an assumed flow direction to the south towards the Mississippi River. • Seven (7) of the borings will be advanced to a depth of 3 feet bgs in the locations of the former dispensers, for the purpose of collecting soil samples. One soil sample will be collected from below each of the seven former dispensers. • Conduct environmental monitoring during drilling including organic vapor screening of soil samples using a photoionization detector (PID), and visual/olfactory observations of soil samples for evidence of contamination (i.e. odors, staining, intermixed debris, etc.). Collect representative soil samples and submit for analytical testing as described below. • Install a temporary monitoring well in each of the five 30-foot borings and collect groundwater samples for analytical testing as described below. Following sample collection, the boreholes will be sealed per Minnesota Department of Health (MDH) regulations. • Advance three (3) temporary soil gas probes to a depth of 5 feet bgs and collect soil gas samples using Summa Canisters. Analyze the soil gas samples as described below. • Analyze representative soil samples from the borings using standard EPA methods as follows: diesel range organics (DRO)— 12 samples; volatile organic compounds (VOCs)—5 samples; BRAUN INTERTEC