 ENVIRONMENTAL Project Experience - Remediation
 Environmental Remediation
Former Gas Station, Duval County, FL
This former gas station property was being redeveloped for a national fast-food chain restaurant. E Sciences completed monitoring well and soil sampling, soil excavation with an eight hour open pit air sparging event and confirmatory soil sampling, replacement monitoring well installation activities, and follow-up groundwater sampling activities. All of these activities were completed on an expedited time-frame to allow for development to occur. Additional monitoring wells were installed for Post Active Remediation Monitoring (PARM) purposes. After 1 year of PARM, the site was granted No Further Action (NFA) status.
Environmental Remediation
Former Gas Station, Polk County, FL
E Sciences prepared a Remedial Action Plan (RAP) detailing the design of an air sparging and vapor extraction remediation system for this former gas station. The remedial action (RA) system was comprised of ten (10) vertical AS wells; eight (8) horizontal VE wells; a rotary vane air compressor; a regenerative blower vacuum system, and; a remediation trailer. Recovered vapors were directed through a moisture separator followed by two 1,000-lb vapor phase carbon vessels arranged in series prior to discharge to a silencer and the atmosphere. E Sciences operated the RA system for approximately 3 years with an average run time percentage >85%. The RA system was turned off and the trailer moved off-site per the FDEP to continue site cleanup activities at another PreApproval site.
Environmental Remediation
Former Gas Station, Seminole County, FL
The remedial action (RA) system consist of in-situ air-sparging (AS) of the groundwater contamination plume to promote volatilization of the hydrocarbon contaminants and enhance biodegradation of hydrocarbons, and in-situ soil vapor extraction (SVE) for the recovery of hydrocarbon vapors for the treatment of the impacted soil in the vadose and smear zone. The AS system is comprised of a series of vertical and angled wells used to introduce air into the groundwater by means of an air compressor and piping network. The in-situ SVE is installed to capture the hydrocarbon vapors from the unsaturated soil zone using a network of horizontal SVE wells located across the site. The strategic placement of the AS and SVE wells at the property will facilitate the treatment of the groundwater and soil underneath a major roadway. Site rehabilitation is expected to take <3 years to achieve GCTLs.
Environmental Remediation
Former Manufacturing Facility, Duval County, FL
E Sciences prepared a Remedial Action Plan Addendum (RAP) to conduct a six (6) month pilot test (PT) at various locations across the site, using 2 different compounds, RegenOxTM in the shallow portion of the surficial aquifer, and 3-DMeTM and BDI PlusTM in the intermediate portion of the shallow aquifer. Additional assessment data was also completed using membrane interface probe (MIB) technology. The PT has been completed and the Report is being prepared by E Sciences.
Environmental Remediation
Multi-Family Housing Project, Hillsborough County, FL
This multi-family housing project was partially located on a historic solid waste disposal area. E Sciences prepared and submitted a Remedial Action Plan (RAP) to address petroleum and arsenic soil and groundwater impacts. Engineering and Institutional Controls (EC/IC) were implemented to allow for the affordable housing project to be completed while maintaining residential safeguards and ecologically sensitive lands. Site construction is complete and activities are occurring consisting of monthly landfill gas monitoring, and quarterly groundwater monitoring activities and reporting. E Sciences completed project milestones within the time frames allocated. E Sciences integrated cost-saving measures into the remedial design, saving the client thousands of dollars over conventional remedial methods.
Environmental Remediation
Former Auto Sales Lot, Seminole County, FL
E Sciences completed remedial activities that included the excavation and disposal of approximately 65 tons of used-oil impacted soils, abandonment of a potable water well, removal of three (3) hydraulic lifts and the associated with closure assessment report, the removal of two (2) septic tanks, and the production of a Natural Attenuation Monitoring (NAM) Plan. The NAM plan was approved by Seminole County and implemented by E Sciences. E Sciences requested No Further Action status for the site and a Site Rehabilitation Completion Order (SRCO) was issued in 2009.
Environmental Remediation
Former Dry Cleaners, St. Lucie County, FL
E Sciences is on a team providing environmental support for a hurricane-damaged strip mall located in Fort Pierce. E Sciences negotiated alternative site specific cleanup standards for PCE and those alternative standards were used to reduce the amount of source removal required. Pilot studies were performed to compare two separate subsurface injection products, the results of which will be used to develop a second pilot study to remediate the site without a formal RAP plan submittal and review process. E Sciences is working closely with the site development team to ensure that the environmental aspects of the project are coordinated closely with the construction aspects. E Sciences has maintained work ahead of the required schedule and met each regulatory deadline.
Community Park Cleanup and Revelopment
Miami-Dade County, FL
E Sciences is providing consulting services for a comprehensive approach to managing environmental site issues and advance the redevelopment of a 21.8-acre site impacted by buried solid waste, petroleum and metals in soil, and metals in groundwater. The property is currently occupied by an inactive ballfield, and operating children's daycare facility, vacant open land, and a small lake. Issues have included: management of potential methane issues with the daycare staff and the local fire department; seeking community input; integrating the remediation approach with the master planning process; identifying ecological improvements for the site and water quality improvements for the lake; working with the client to submit an EPA Brownfields Remediation Grant. Remediation strategies include source removal, continuous methane monitoring within on-site structures and quarterly methane monitoring at site perimeter, installation of a surface cap to prevent infiltration of stormwater and exposure to buried materials, and quarterly groundwater monitoring.
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