Case Studies

EWMI was contracted to perform remedial services at a pharmaceutical manufacturing facility in Groton, CT. Utilities affected by the proposed remediation were located and capped. Approximately 1,200 tons of TSCA PCB soil was excavated and live-loaded into trucks to be transported to the disposal facility. There were two additional areas of concern that needed to be excavated. The additional 200 tons of non-hazardous metal impacted soil was removed from site. Excavation areas were backfilled and restored to existing conditions. This project was completed in three months with zero safety incidents.

Located in Southeast Pennsylvania, this high volume landfill wanted to begin construction on an additional cell. A former borrow pit, capped in place to protect K087 (Coal Tar Waste), had to be removed before the cell construction could begin. EWMI was contracted to provide in-situ waste characterization, excavation, backfill and turnkey transportation & disposal services for the removal of the K087 waste. EWMI excavated, transported and disposed of approximately 18,500 tons of K087 waste and 48,000 tons of non-hazardous soil. All K087 waste was shipped via rail to Canada in Inter-modal containers. The amount of outbound waste was significant and required over 13,000 safe man hours to complete the project.

Located on a New York and New Jersey property, EWMI provided turnkey environmental and construction services that included, relocation of existing water lines, gas line and fire suppression lines to make way for a complex professionally designed support of excavation adjacent to a structure. Helical pile supports were installed to support both building and a duct bank containing sensitive fiber optic and high voltage distribution cables. Three underground storage tanks were previously abandoned with impact-ed flowable fill material. Steel sheet pile was driven around the proposed excavation and USTs to safely support the sandy soils while removing petroleum impacted soils, tanks and groundwater.

This site, nestled beneath the Goethals Bridge and along the Arthur Kill River Port, this site was abandoned and littered with large reinforced concrete building slabs, footers, foundations, debris and piers impacted with both Non-TSCA PCB’s and TSCA PCB’s. EWMI used union labor and equipment operators to delineate, break, size and removed large rebar, crush the concrete into usable grading fill and cap the site for future use as a lay down area for rehabilitation of the Goethals bridge for the Port Authority of New York and New Jersey.

A severely dilapidated wooden bulkhead was demolished and a stabilized with rip rap to rehabilitate the shoreline for later use. Each Area of Concern (AOC) was surgically excavated and carefully conveyed and staged into different waste classification stockpiles. EWMI utilized a detachable excavator bucket system to alternate between excavation AOC”s to prevent cross contamination of the PCB’s from one AOC to another. A decontamination area was constructed to wash PCB impacted attachments using a PCB bonding agent called CAPSUR®. During the course of excavations, EWMI encountered abandoned pipes containing hazardous and non-hazardous liquids. EWMI collected, drained, sheared, sized, and disposed of the piping to approved waste facilities.

Since the AOC’s were located on a parcel very close to groundwater, over 250,000 gallons of both hazardous, and non-hazardous groundwater was collected, sampled and disposed of at multiple, approved facilities. Site restoration included the capping of the entire site using the crushed concrete with a pre-approved strategic grading plan and compacted. Approximately 4,100 tons of TSCA soil was disposed of, and 2,700 tons of non-hazardous debris, and piping were disposed of.

EWMI was contracted to excavate and dispose of contaminated soils and install a soil vapor extraction system inside a hangar at a Westchester County, New York Airport. EWMI excavated ~1,700 tons of F-Listed soils from the hangar. EWMI utilized trench boxes to shore the side walls of the excavation to allow for safe installation of the SVE system piping. Pipes installed were ~300-linear feet. Manifolds were made to enable the engineer to check organic vapor levels being drawn through each pipe. Two (2) 1,000-pound carbon units were installed as part of the system. The excavation was backfilled in one-foot lifts to meet 95% compaction.

Additional tasks included the removal of an oil/water separator and neutralization pits which generated approximately 400 tons of non-hazardous soil for offsite disposal. EWMI’s transportation & disposal division managed all aspects of the F-listed and TPH contaminated soil.

EWMI was contracted to provide site remediation services at this former chemical research facility in Somerset, New Jersey. EWMI managed all phases of the project including the extensive permitting as well as multiple vendors to handle tasks such as electrical utility relocation services and onsite concrete crushing. Approximately 15,000 tons of soil and 2,000 tons of concrete was excavated, loaded, and transported offsite using EWMI’s large scale soil transportation & disposal program. EWMI saved the client $1,000,000 dollars by utilizing our transportation & disposal specialists to provide offsite treatment instead of incineration. EWMI provided the waste characterization and sampling plans to make this significant cost control measure happen for the client. As a result of this proactive approach by EWMI, the project was under budget. EWMI assisted in the installation of an SVE system and injection wells in conjunction with the environmental engineer by excavating trenches and restoring the site with specialized piping and materials.

EWMI installed a semi-permeable geotextile membrane to take the place of a concrete pad removed by EWMI. EWMI installed injection point risers for future introduction of treatment chemicals. An air sparging unit was utilized to handle and treat water from the excavation. EWMI contained the water, separated solids and met the specification for turbidity & solids while introducing water into the air sparging system.

Soil disposal was managed by railroad transportation by EWMI’s transportation & disposal division. EWMI saved the client additional money by utilizing rail instead of over-the-road trucking.

Acquisition and placement of wetland specific topsoil. The site restoration was performed in accordance with sensitive wetlands restoration workplans set forth by the NJDEP. EWMI performed this project under close supervision of the NJDEP Wetlands Mitigation Department.