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DocuSign Envelope ID: 109A31 B0-29AD-4F2B-8257-8D55D4FF0808 <br /> Proposal for RI—Waste Characterization,Groundwater and Landfill Gas Monitoring <br /> Hillsborough Dump <br /> ID No. NONCD0000483 <br /> Z Task Orders 483 DP-13 and 14 <br /> S&ME Project No.4305-17-061 E <br /> Make sure the static pressure shows a reading of zero on the instruments with this feature, prior to <br /> taking the first sample. <br /> Step 2—Connect the instrument tubing to the landfill gas monitoring well cap fitted with a valve. Purge <br /> sample tubing for at least one minute prior to taking readings, <br /> Step 3—Record the initial readings prior to recording the stabilized readings.A stable reading is one that <br /> does not vary more than 0.5 percent by volume on the instrument's scale. <br /> Step 4—Record the stabilized readings. <br /> Step 5—Disconnect the tubing and turn the valve to the off position. <br /> Step G—Proceed to the next landfill soil gas probe and repeat Steps 2—5. <br /> Field logs will be maintained and will include at a minimum: <br /> Names of persons conducting the evaluation; <br /> Brief description of weather conditions(possible impacts on data:windy, nearby exhaust from vehicles, <br /> etc.); <br /> Date and time began/ended; <br /> Ambient temperature, humidity, and barometric pressure readings at least hourly; <br /> Verification of field instrument calibration; <br /> Additional field calibration as needed for changing field conditions; <br /> Duplicate readings from at least one background and two probes; <br /> Detection limit of each instrument used; <br /> A table that includes sample location,readings, and notations of other things that may affect the results <br /> (e.g.water trap,filters, increasing barometric pressure,significant change in temperature,etc.). <br /> Subtask E Project Management, Coordination &Support <br /> Project Management,Coordination and Support services include: <br /> Provide project management and technical support to field staff, <br /> Field and laboratory data quality review. <br /> Provide project management and communication with Orange County and NCDEQ. <br /> Task 483DP-14 Compile Report <br /> S&ME will compile a letter report titled Remedial Investigation— Waste Characterization and Monitoring of <br /> Groundwater and Subsurface Landfill Gas that includes the findings of the items listed above for the scope of <br /> services. The following sections and information will be included in the report. <br /> Explanation of services performed and the findings. <br /> A section concerning any variations from the work plan or the 50Ps. <br /> Boring logs describing materials encountered,depth of material, PID screening measurements,and sample <br /> locations. <br /> GPS coordinates of all boring locations. <br /> Tables summarizing laboratory data. <br /> Figures presenting sample locations and selected analytical results. <br /> Copies of original field notes. <br /> January 16, 2020 5 <br />