2010-115 (2) - Laserfiche WebLink

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SCOPE OF SERVICES TASK 1.0 - PREPARATION OF WORK PLANS MEETINGS AND INITIAL RESPONSE CDM will prepare work plans for evaluation monitoring pursuant to Chapter 62-701.510 (7), F.A.C. including, as requested by FDEP, plans to further evaluate the nature of contamination in the C-5 Canal. The monitoring plan will propose locations for surface water samples and wells that will be installed as requested by FDEP. The monitoring plan will also include lists of parameters for groundwater and surface water analyses. After approval from SWDD, the plan will be sent to FDEP for approval. Based on discussions with FDEP, the work described in Task 2 -will be proposed in the work plans Included in Task 1 are two meetings with SWDD, one meeting with FDEP in Orlando, and general assistance and support in initial response. Revisions to the monitoring plan requested by FDEP and responding to Requests for Additional Information (RAI) are not included in this Scope of Services. CDM reserves the right to request additional compensation should FDEP request revisions to the monitoring plan or issue an RAI. TASK 2.0 - MONITORING WELL INSTALLATION AND SAMPLING OVERSIGHT In accordance with FDEP-approved plans (see Task 1), CDM will install up to six shallow monitoring wells to the north of Segment 1. Three compliance wells will be installed south of the C-5 Canal 100 feet north of the edge of waste. Three wells will also be installed north of the C- 5 Canal to assess the extent of contamination north of the canal. Shallow monitoring wells will be up to 20 feet deep and screened from approximately 10 feet below land surface (bls) to 20 feet bls using 0.01 -inch machine -slotted screens with size 20/30 sand packs. Boreholes will be advanced using hollow stem augers. Actual depths will be selected in the field based on descriptions of drill cuttings and water level measurements made during drilling. Wells will be developed by pumping and surging until field parameters stabilize and withdrawn water is free of sand and silt. Drill cuttings and development fluids will be containerized and transported to a storage area designated by SWDD and disposed of by SWDD. Each well will be completed with a concrete pad and aluminum protective casing. Locations and measuring point elevations will be surveyed by a registered surveyor. CDM will collect groundwater samples from up to nine shallow monitoring wells (MW -1S, MW -2S, MW -3S, and the six new wells) and up to five surface water samples. Groundwater samples will be analyzed for iron, chlorides, total dissolved solids (TDS), sodium, ammonia, nickel, arsenic, hardness. These analytes have been detected in wells MW -1S, MW -2S, and MW - 3S in recent years. Surface water samples will be analyzed for the same analytes and for algae/bacteria speciation. Samples will be collected in accordance with FDEP protocols and analyzed by certified laboratories. TASK 3.0 - DATA EVALUATION AND REPORTING CDM will review and evaluate the results of historical monitoring and the results of the investigations described above. A report will be prepared and will include the following: CM A-2 1127e7.aoc.