KEMRON was under contract to this petroleum refining and marketing company for site investigations and remediation of soil and groundwater contamination at a facility in Bayonne, New Jersey. KEMRON prepared and conducted a sampling plan to address both soil and ground water lead contamination at the site. The plan was prepared using the New Jersey Administration Code (N.J.A.C.) Part 7, Chapter 26E.
The purpose of the sampling event was to:
- establish a contaminant gradient for the soils
- collect ground water samples from the down-gradient monitor wells to determine if the ground water was contaminated
Low flow sampling methodology was used to both purge and sample the ground water from the three monitor wells. The low flow collection method attempts to simulate the aquifer conditions by pumping ground water from the monitor well at a flow rate comparable to the aquifers recharge rate. This was accomplished by setting the intake velocity of the sampling pump to a flow rate that limits drawdown inside the well casing. By simulating the recharge rate, the ground water was not dissolving any additional sediments or other aquifer material. Water parameters were collected at selected intervals and tabulated in the daily log notebook.
KEMRON evaluated innovative remediation approaches and because of the nature of the contamination (low levels of heavy metals, predominantly lead, in soil), was able to reduce the amount of soil to be remediated.
The first phase of activity involved the evaluation of remedial alternatives, the selection of the costeffective alternative, and the development of the Remedial Action Workplan. The second phase of activity involved developing the design of the cost-effective remedy, implementing the cost-effective remedy, and post-remedial monitoring. The third phase of activities involved preparing a Draft and Final Remedial Investigation Report, a Classification Exception Area proposal and a Remedial Action Report.
By evaluating innovative remediation approaches, KEMRON saved the client between 5 and 10% of initially estimated remediation costs.
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A historical diesel fuel leak from a pipeline resulted in a free product plume over an area of five acres at this terminal site in Georgia. KEMRON installed groundwater monitoring wells at the site in order to define the extent of the free floating petroleum and initiated a quarterly sampling program to define the extent of the dissolved petroleum constituents. KEMRON performed routine maintenance of the existing product recovery systems and designed an expanded program involving the design and installation of product recovery trenches at the site. The trench recovery system eliminated season grass kills which occurred on an adjacent property during rising water table conditions. KEMRON designed a groundwater remediation system and performed operation and maintenance of the system. In addition, product-only pumps were installed in one day to address a sudden subsurface release.
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KEMRON completed O&M activities at a Superfund site, located south of Marietta, Ohio. The transition from the previous contractor was managed efficiently with no downtime for operations. The site consisted of three inactive waste disposal areas (North Landfill, Site A and B) and a former phenol production unit area. The disposal units and the former phenol production area were located within the confines of two operating chemical plants. The primary contaminants of concern were dioxin, furans, benzene and chlorobenzene.
KEMRON employed two full-time and two part-time personnel, who were responsible for all daily O&M activities and acted as liaisons to the local operating plants. KEMRON maintained and operated a leachate collection system; performed routine gas vent maintenance and groundwater monitoring activities; provided site security; ensured compliance of neighboring facilities with site health & safety requirements when working on the property; interfaced with regulatory agency personnel; provide mowing/cleaning/and general maintenance of client property and equipment; provided response services for spills, releases and related issues; and supervise subcontractors in specialized maintenance activities.
Numerous special projects have been completed by KEMRON on the site in support of planned remedial activities. These projects have included: preparation of a comprehensive site Health & Safety Manual; filtration, solidification and consolidation of wastewater and sludges contained in the 150 drums stored on site; inventorying, packaging and disposing of IDW and site chemicals; collection of over 400 discrete soil samples from the former phenol production area for furan analysis. Investigation of adjoining property planned for acquisition by the client; upgrading of site facilities with installation of new office and decontamination trailers; comprehensive groundwater monitoring well inventory and upgrade plan for over 120 wells.
KEMRON also provided support on remediation of radioactive slags and metal owned by the client on an adjoining property. Work included preparation of a site sampling grid and collection of over 80 soil samples for analysis of radioactive constituents. KEMRON also provided assessment, containerization, testing and shipping of 90 – 4 cubic yard containers (360 yards) of radioactive material. Activities also included over packing drums and containers of radioactive waste where the containers had deteriorated.
KEMRON provided engineering and contractor services during the closure of the North Landfill and assumed the role of facility liaison for plant and agency personnel to the client’s project personnel and contractors. KEMRON commissioned the new leachate collection system and pump station installed during the closure. KEMRON authored the Operation & Maintenance Plan for the closed North Landfill.The O&M Plan described all activities and documentation required for the site. The plan conformed to site and EPA Region V requirements and was reviewed and approved by the regulatory agencies.
KEMRON installed an operated a groundwater remediation system at the site. Approximately 50 acres of the facility is impacted by a groundwater plume, with monochlorobenzene, benzene and phenol as the primary constituents of concern. Three separate source areas are controlled with extracted water treated at an operating chemical plant wastewater treatment facility. Monitored natural attenuation was used as the remedy for fringe areas of the plume extending south toward the lower terrace of the Ohio River.
KEMRON installed 25 new stainless steel recovery wells, 11 new piezometers and 4 new recovery wells. Also, two recovery wells and one large production well were abandoned. Eighteen of the new recovery wells were operated in conjunction with two existing wells to form a hydraulic barrier along the southern edge of a closed disposal unit. The hydraulic barrier wells were powered by pneumatic pumps, operated by a control system installed by KEMRON. Pneumatic pumping systems were utilized for groundwater recovery from 3 other wells located at waste disposal units on the northern portion of the property. Groundwater recovery in the highly productive river aquifer was accomplished by the installation of four new wells equipped with electric submersible pumps. These wells were operated in conjunction with one existing recovery well, with new piping, electric, and control systems installed by KEMRON.
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