Contamination Assessment

HSW has provided environmental and engineering consulting services to Lockheed Martin Missiles & Fire Control (LMMFC) since 1988. Services have included multiple site characterization and remediation projects under RCRA and state consent order programs, as well as accelerated site characterizations during due diligence programs, prior to one of the largest transfers of environmentally-impacted properties in the U.S.  Site characterization including detailed analyses of soil and water quality has been conducted for more than 50 SWMUs and AOCs, including six industrial landfills, one ordnance testing area, several remote industrial manufacturing areas, and several solvent release locations within the main plant manufacturing areas.

HSW has made extensive use of direct push technology (DPT) sampling with field and mobile-lab analyses to rapidly delineate impacted areas. After initial delineation, permanent monitor wells have been optimally located, installed, and sampled. HSW has conducted routine groundwater sampling of more than 200 monitoring wells for more than 10 years.

HSW’s water and soil quality sampling has also included collection, analysis, and statistical evaluation of background samples.  HSW has obtained FDEP approval of background concentrations exceeding Florida Cleanup Target Levels in soil for numerous metals, and for aluminum, iron and manganese in groundwater.

HSW has completed pilot tests and designed and installed groundwater and soil vapor remediation systems at the facility. We facilitate operation and maintenance of a comprehensive main plant system that receives and treats VOC-impacted groundwater from four locations around the plant, including two horizontal wells that HSW designed, and directed installation of, under the industrial plant building for source control.

HSW designed, installed and operated an air sparge system for VOC-impacted groundwater source removal.  Following six months of sparging in 2010, concentrations have decreased in all but two wells and the objective of source removal has been achieved. 

In July 2008, LMMFC made a decision to expand their existing groundwater cleanup strategies to the leading edge of a contaminant plume.  HSW provided cost and effectiveness comparisons between a traditional pump and treat (P&T) system and a self-sustaining, solar-powered P&T system for hydraulic control with disposal to a gravity-fed exfiltration gallery. LMMFC decided to install the solar-powered system. The system incorporates the five core elements of Green Remediation as outlined in the EPA’s August 2009 Greener Cleanups Principal (Air, Water, Materials & Waste, Energy, and Land & Ecosystems).  HSW services included remedial investigation, design, and construction in 2009, and O&M, groundwater sampling and groundwater modeling services in 2010. The solar-powered P&T system is energy self-sustaining and monitored remotely, thereby maximizing the elements of green remediation.