Lorentz Barrel and Drum (LBD) Superfund Site-
Department of the Army, U.S. Army Corps of Engineers | Published July 12, 2016
This is a non-personal services contract to provide continued execution of Lorentz Barrel and Drum (LBD) Superfund Site Remediation, through the Focused Feasibility Study, EK Pilot Study located in San Jose, California. The Government shall not exercise any supervision or control over the contract service providers performing the services herein. Such contract service providers shall be accountable solely to the primary contractor who, in turn is responsible to the Government. Basic Services: The Contractor shall provide all qualified personnel, management, supervision, materials, and other items and non-personal services necessary to perform the treatability design study for Electro-kinetic enhancement of in-situ chemical oxidation remediation process as defined in this Performance Work Statement (PWS). No work shall be accomplished beyond what is specified in this PWS unless specifically directed by the Contracting Officer.
5.2 Kick-Off Meeting: The Contractor shall attend a Project kick-off meeting or teleconference within 30 days of contract award to discuss task requirements and expectations.
5.3 Task 1- Project Planning Meeting Within two weeks of contract award, a planning meeting (conference call) shall be held, attended by the Contractor, USACE, USEPA and the FS Contractor. The purpose of the meeting is to facilitate development of the project SAP. Discussions will include: historical data, conceptual site model, potential source areas. The general strategy and logistics for implementing the TRIAD-type investigation will be discussed and agreed upon by the project team. The Contractor shall provide a project schedule and meeting summary within 5 days after the meeting.
5.4 Task 2- Single Dipole (Heating) Pilot Test This task is modified as a result of changing the oxidant from permanganate to persulfate. The use of persulfate requires an activation step that was not needed when permanganate was assumed to be the oxidant of choice. In addition, it has been found that soil moisture content at the site is adequate, and a saturation stage of this test will not be necessary. The primary data need for this test is now to determine the time necessary for heating the treatment zone to the target activation temperature. Voltage and temperature distribution will also be evaluated. This test will demonstrate whether the overall engineering approach is suitable to the site and whether acceptable rates on oxidant transport and activation heating can be achieved.
During implementation of the field work, the Contractor shall provide electronic correspondence to the USACE and EPA technical team at least weekly to provide status and results of testing. At the end of each phase, the Government will direct the Contractor to proceed with the next phase, if it is determined to be appropriate to satisfy project objectives.
5.4.1 Task 2a - System DesignThe Contractor shall develop the layout of the monitoring system for the heating test and the details of construction and performance of the test. The design shall be documented in a Work Plan Addendum, which shall be provided in draft and final editions. This addendum is expected to be brief; less than 20 pages. It is initially assumed that the electrode configuration used in the previously performed conductivity test will be used, and will be sufficient to heat the soil to the target temperature. To accomplish heating, the electrodes must be switched from DC power to AC power. The conclusions of the laboratory work identified some uncertainty as to whether the materials of the electrodes used in the conductivity test will be effective for the heating test. The design plan shall include the possibility of performing a second run of the heating test using a different material in the electrodes.
5.4.2 Task 2b - Construction PhaseThe Contractor shall install 10 three-stage voltage/temperature monitoring probes and provide all tanks, pumps, piping, power supply, control systems, and instrumentation necessary to complete the heating test. This task shall include mobilization costs and disposal of all waste materials. In addition, during construction of the probes, the Contractor shall collect the site baseline soil and groundwater samples. Quantities of samples, analytical methods, and other procedures shall be in accordance with the existing sampling and analysis plan.
5.4.3 Task 2c - Field Testing PhaseThe field testing includes application of AC power to heat the treatment zone to a target temperature for activation of the oxidation. Data from the voltage/temperature probes shall be collected to characterize the 3-dimentional distribution of the electric field and the temperature. The work plan addendum developed under Task 2a shall include criteria for determining completion of the soil heating.
5.4.5 Task 2e - Single Dipole (Heating) Pilot Test ReportFollowing completion of the field work, the Contractor shall submit a letter report of the findings as specified in Technical Exhibit 2. The report shall summarize the site activities, present the data gathered, and discuss impacts of the data to the subsequent full-scale pilot test.
5.5 Task 3 - Full-Scale Pilot Test System Installation The Contractor shall complete installation of the full scale pilot system as currently specified below and in the existing work plan with the exception that the electrode array shall be reduced. It is now required that only two additional electrodes shall be installed under Task 3.
5.5.1 Task 3a - System DesignSimilarly to Task 2a, the Contractor shall prepare a Work Plan Addendum to finalize the pilot system layout design and operating requirements. This plan shall also be brief, and prepared in draft and final editions.
5.5.2 Task 3b - System InstallationThe Contractor shall install the two additional electrodes, power supply, and all appurtenances necessary to conduct the full-scale pilot test as specified here and in the Work Plan Addendum. The Contractor shall mobilize all staff, materials, and equipment necessary to install the pilot test system. The Contractor shall arrange for all utility hook-ups to provide an operational system.
In addition to monitoring points specifically required for the pilot test, the Contractor shall install two (2) groundwater monitoring wells to depths approximately 35 feet bgs. The screen interval shall be 10 feet in length starting from the top of the B Aquifer. These wells will be used by EPA following the test to observe the effects of the treatment at the pilot test location on concentrations in the groundwater following the test. The contractor shall collect groundwater samples from these wells as specified in Section 5.8.
During system installation, weekly progress reports shall be provided to USACE and EPA via electronic mail as specified in Technical Exhibit 2. The reports shall identify activities performed during the week, schedule status, coordination issues, difficulties encountered, and any directions given.
5.6 Task 4 - Report of Findings The Contractor shall prepare the Report of Findings which shall include• Description of all site activities• General system performance discussion• Operating parameters and system control issues• Power demand• Oxidant supply rate• VOC reduction achieved• Recommended O&M requirements for full-scale implementation.• Any other information that may be important to the development of the conceptual full-scale design and cost in the Feasibility Study.The Report shall be prepared and delivered in draft, draft-final, and final editions as specified in Technical Exhibit 2.
5.7 Option 1 - Full-Scale Pilot Test System Operation The contractor shall operate the full-scale pilot test system as specified here and in the Work Plan
5.7.1 Option 1a - System Operation. Under this sub-task the Contractor shall perform all inspections, maintenance, system adjustments, oxidant additions, and data collection to operate the system for 90 consecutive days. The operation activities shall be performed as specified and scheduled in the work plan, unless otherwise coordinated through USACE, EPA, and approved by the COR.
The Contractor shall provide bi-weekly status reports via e-mail as specified in Technical Exhibit 2. These reports shall provide content similar to that of the system installation reports and shall include, as an attachment, any sampling data as it becomes available.
5.8 Option 2- Sampling and analysis. Soil and groundwater samples shall be collected to demonstrate the degree of contaminant reduction during the 90-day operation. For this subtask the Contractor shall perform/provide all sample collection, laboratory analysis, data management, and data validation.
Soil sampling shall be accomplished using a DPT rig to collect samples at locations identified in the work plan. Two soil sampling events shall be accomplished in Task 3; one during operation, and a final event three months after operation. Quantities of samples shall be as planned in the initial Work Plan. The analytical suite shall also remain the same, except that the method for analysis of manganese shall be replaced by an appropriate method to evaluate persulfate concentration.Groundwater samples shall be collected from the two monitoring wells installed under Task 3b. Three groundwater sampling events shall be accomplished; one baseline event before operation, one event immediately following the operation period, and a final event three months after operation. In each event, 2 primary samples shall be analyzed for each of the following analytes: volatile organics, total organic carbon, and metals. Quality control samples shall be collected in accordance with the accepted Sampling and Analysis Plan.Option 3 - Field testing Phase - Alternative ElectrodesIn the event that the electrodes used in the first attempted heating test were not capable of providing adequate heating under AC power, the Contractor shall repeat the test with electrodes of an alternative material as specified in the work plan addendum.