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Westrum Development Corporation — CMA was contracted to investigate a two (2) city block area located in Atlantic City. This investigation included performing a ground penetrating radar survey across the site, installing test pits and soil borings around the location of eighteen (18) suspected UST locations. Eleven (11) USTs were found to exist at the site and seven (7) USTs were found to be leaking. CMA performed the delineation of the leaking UST locations and developed a remedial strategy and cost estimate for remediating the oil impacts determined to exist on-site. Presently, this site is being considered for NJDEP Brownfields Funding. Remediation is pending the outcome of the Brownfields determination.

Numerous Groundwater and Soil Remediation Projects — CMA has performed over 100 groundwater and soil remediation projects located at residential homes and commercial properties throughout the State of New Jersey. A majority of these projects were performed in response to leaking underground No. 2 oil tanks at residential homes and/or commercial businesses. Over 80% of these projects were performed where insurance claims were involved and underwritten by numerous insurance companies. These projects typically involved obtaining the appropriate permits, design and installation of a structural support system for the on-site buildings, excavation and disposal of oil impacted soil, de-watering groundwater, treatment and discharge of oil impacted groundwater, soil and groundwater sample collection, backfilling excavated areas, restoring the property to prior condition and generating remedial action reports to obtain a letter of “No Further Action” for the property.

Multi-million Dollar In-situ Air Sparge and Soil Vapor Extraction System — Project Director for the installation of a multi-well soil vapor extraction and air sparging system at JFK Airport. The system consisted of 42 horizontal and 38 vertical soil vacuum extraction (HSVE) and horizontal air sparging (HAS) wells. Instrumental in the design, installation and development of these wells to meet the remedial objective of the in-situ treatment of a Jet fuel plume encompassing approximately 60 acres.

Large Oil Spill — Project Manager for an 800,000-gallon oil spill on the Delaware River. Managed 115 men and associated equipment, needed to cleanup a 5-mile section of the Delaware River along the Delaware State shoreline.

Griffith Energy Company, Site Acquisitions — Performed evaluation of previously collected analytical and site characterization data for numerous sites throughout Delaware, Maryland and West Virginia. Following this comprehensive review, additional remedial investigative work was proposed and implemented at each site to close data gaps required in determining future remedial alternative cost estimates at each site. Remedial cost estimates were then prepared and used to determined monetary amounts to be left in escrow during the property sale. CMA then implemented remedial investigations and remedial actions at these bulk fuel transfer facilities.

Drum Excavation Project — Managed a drum excavation/sampling project. Directed the removal of over 100 drums of unknown contents. The contents were sampled, characterized and disposed of properly. A contamination assessment of the surrounding soils was performed to determine the extent of any soil and groundwater contamination.

Design and Installation Horizontal Injection Well system — Managed the design and installation of a horizontal injection well system. The remedial objective for this project was to design and install a horizontal well to produce a hydraulic barrier to contain and BTEX plume and enhance the collection efforts of an existing vertical well recovery system.

ISRA Remedial Investigation — Managed investigation of a printing facility located in Northern New Jersey. The project involved developing a sampling plan, implementation of a soil and groundwater investigation and UST removal.

Gasoline Service Stations — Managed the removal and closure of NJDEP certified USTs at numerous service stations and regulated bulk fuel facilities. Closure activities included remedial cleanups associated with leaking USTs and ASTs. Soil and groundwater investigations were implemented to determine the size and shape of the impacted matrices. Based on the analytical and site characterization, data collected in the field remedial alternatives were evaluated and chosen. Remedial strategies included excavation, sparge and vent, ozone injection coupled with natural attenuation and groundwater monitoring. Projects involved obtaining the appropriate permits, design and installation of structural support systems for intrusive dig operations and/or on-site and off-site building support, excavation and disposal of impacted soil (if removed), de-watering groundwater (if excavated), treatment and discharge of gasoline impacted groundwater (during excavation activities or utilizing a pump and treat system), soil and groundwater sample collection, backfilling excavated areas, restoring impacted properties to prior condition and generating remedial action reports to obtain a letter of “No Further Action” for the properties in question.

Expert Witness/Leak Investigation — Lead the investigation for a major insurance company. The investigation focused on determining the cause to an 8,000-gallon No 2-oil spill.

Superfund Site, Milford, Delaware — Lead manager for the design, installation and operation and maintenance of an air sparge (AS) and soil vapor extraction (SVE) system consisting of over 100 AS wells and 80 SVE wells.

South Jersey Gas Company, New Jersey, Manufactured Gas Plant — Subsurface remedial investigations at numerous former manufactured gas plant (MGP) sites. Investigations involved: (1.) soil borings to delineate both DNAPL and LNAPL through the unsaturated and saturated zones, (2.) groundwater screening borings installed for the delineation of groundwater impacts, (3.) installation of permanent monitoring wells for groundwater sampling and long-term groundwater monitoring, (4.) the advancement of geotechnical soil borings to obtain subsurface characteristics for potentially implementing future excavation activities at the sites and (5.) collection of site characteristic data including soil hydraulic properties for use in determining remedial alternatives for the sites. Supervised data reduction in complying with NJDEP technical requirements for preparation of Remedial Investigation Reports (RIRs).

Upon completion of the field investigations, data was utilized to compose Remedial Action Workplans (RAWPs) for each site in preparation for submittal to the State of New Jersey on behalf of the client. RAWPs involving intrusive activities included air monitoring requirements. Shared in enforcement and implementation of air monitoring protocols. Assisted in performing over-site during and data reduction following the implementation of chosen remedial strategies. Assisted in the submittal of the Remedial Action Reports (RARs) to the NJDEP.

Confidential Client, New Jersey — Utilization of previously collected analytical data in the design, installation and compliance monitoring of a free-phase hydrocarbon recovery groundwater remediation system.

Vapor Intrusion Study, Precious Hearts Daycare, New Jersey — Conducted Indoor Air Sampling to evaluate indoor air quality at proposed daycare location. Indoor and ambient samples were collected in accordance to NJDEP Vapor Guidance documents. Sampling was conducted over a 24-hour time frame using 6-Liter Summa canisters analyzed for USEPA Method TO-15. A report outlining investigative activities including Indoor Air Building Surveys and Sampling Forms was prepared and submitted to fulfill New Jersey licensing requirements.

Mining Operation, Confidential Client, New Jersey — Conducted subsurface delineations for petroleum related compounds for both soils and groundwater at a variety of sites. These areas were distributed over a large number of properties and declared Areas of Concern (AOCs) during the sale of a mining exploration company. Analytical data was then utilized in the preparation of RAWPs for each AOC.

Groundwater Modeling, Confidential Client, New Jersey — Setup and calibration of a 2-dimensional fate and transport model (Bioplume II) to evaluate natural attenuation as a remedial alternative for a large groundwater plume (3,500 ft.) existing within a residential area. Modeling illustrated to the DEP that natural attenuation was occurring, reducing the concentrations of the constituents that existed above the groundwater cleanup criteria. Modeling efforts allowed the client to take a passive rather than active role in groundwater remediation

Landfill, Confidential Client, New Jersey — Conducted subsurface delineations for groundwater and soils at several former un-regulated landfills for a variety of site-specific chemical constituents. Analytical data collected was utilized in the preparation of RAWPs for each site.

South Jersey Gas Company, New Jersey — Implementation of a pilot test study to obtain the necessary parameters for the design of a dewatering system for a remedial action dig. Supervised the installation of sheet pile in the form of a box and a well network (12 wells) that consisted of locations inside and outside of this sheeted area. Wells were set at varying depths within the multi-layered lithologies that existed below the site. A 36 hr. pump test was then performed to obtain data that verified the following: (1.) leakage coefficient of the sheet piling, (2.) hydraulic connection between the varying soil lithologies, (3.) draw-down as a function of time within the multi-layered system and (4.) volumetric flow values required to reach the benchmark excavation depths.

Real-time flow data collected (via. pump test) was input into a 3-dimensional groundwater model (Visual Modflow), which had previously calibrated to static conditions. Model calibration was then carried out under transient conditions (simulating the pump tests draw-down within the sheets as a function of time). Following this transient calibration, dewatering simulations were run on the full-scale sheet-pile design. Modeling outputs predicted the number of extraction wells, the depths of their screens and the necessary pumping rates required to dewater the 180 ft. diameter cofferdam sheet-pile design. The sheeted dig required that the water table be lowered 27 ft. and held for a period of approx. 6 months.

Utility Company, Confidential Client, New Jersey — Setup and calibration of a groundwater model (Visual Modflow) for a remedial alternative analysis evaluation. Input parameters were obtained from previous remedial investigations carried out at the site. Numerous simulations were performed for groundwater dewatering scenarios within the site area to access the feasibility of soil removal within the saturated zone. Modeling was performed to determine the number of extraction wells required and their pumping rates to obtain the soil benchmarks needed to remove impacted material. Another variable altered and therefore examined in the model was the lithological layer in which the sheet piling was set (depth sheets were driven). Difficulty was added to the modeling efforts with the fact that a portion of the material needed to be removed existed on the bottom of a large river system.

Utility Company, Confidential Client, New Jersey — Field team leader, technical advisor and large managerial role for a subsurface remedial investigation at a former manufactured gas plant site. Investigation involved: (1.) Preliminary construction and running of a groundwater model to determine the potential size of the groundwater plume and what properties lay within this area of impacted groundwater so that they would be included in a water survey mail-out, (2.) soil borings to delineate both DNAPL and LNAPL through the unsaturated and saturated zones, (3.) groundwater screening borings installed for the delineation of groundwater impacts, (4.) collection of hydraulic conductivity data via constant head tests on various screenings from varying depths (lithologies) and (5.) the installation of permanent monitoring wells for groundwater sampling and long-term groundwater monitoring.

Constructed a regional groundwater model utilizing Visual Modflow in an attempt to simulate groundwater flow and fluid hydraulics within a watershed containing a 3,000 ft. contaminant plume. This comprehensive model utilized the data collected during the ongoing remedial investigation (soil lithologies, soil hydraulic properties, groundwater flow gradients etc.). The modeled simulation also included flow boundaries such as river systems, industrial production wells and municipal production wells. Groundwater modeling was utilized to facilitate the on-going large scale groundwater investigation in which the direction and depth of the 3,000 ft. plume containing multiple compounds of concern was being delineated. Modeling also was used to separate other contributing sources from the client’s through groundwater flow hydraulics within the aquifer matrix. Potential groundwater receptors were also identified with the model utilizing travel velocities of the constituents under investigation.

Provided over-all project management for all decisions made in the field based on the client’s needs. Attended meetings at the DEP as a technical liaison for the client throughout the remedial investigation. Supervising data reduction and report construction in complying with NJDEP technical requirements for preparation of the RIR.

Utility Company, Confidential Client, New Jersey — Manager of a former manufactured gas plant site, management duties included: (1.) over-site of large scale remedial action dig taking place at the site, (2.) construction and filing for a CEA document for a 3,500 ft. plume traveling through a residential area, (3.) identification of potential receptors (property well owners, municipal wells etc.) and over-seeing groundwater sampling of these receptors, (4.) liaison for the client with the DEP regarding actions to be taken by the client to assure all property well owners are provided with well alternatives (city water hookup, treatment systems, etc.) and (5.) set-up of additional investigations required by the DEP for the client to obtain natural attenuation as a remedial alternative for groundwater impacts.

South Jersey Gas Company, New Jersey — Setup and calibration of a groundwater model (Visual Modflow) to observe the effects a large scale dewatering construction effort (1 million gallons a day) would have on an area of impacted groundwater. Responsible for determining additional data (hydraulic conductivity of important lithologies, additional permanent monitoring wells for water level measurements, etc.) needed to be collected for the client for model inputs. Dewatering depths and schedules for the construction project were provided by the contractors (number of well extraction points, depth of construction activities etc.) and simulated in the model for a period of nine months. Served as a technical advisor for the client on potential capture times and concentrations, during meetings with the New Jersey Bureau of Water Allocations, Department of Environmental Protection and with the property owners and construction managers in charge of the construction effort. Served as a team member in the creation of a groundwater-sampling plan to monitor plume migration and potential active remediation work-plan for worst-case concentration capture scenarios. Also performed additional contaminant modeling for impacts associated with the property owner, unrelated to the client.

PROJECT EXPERIENCE

The projects listed below are projects performed by CMA staff members and show the wide range of experience and expertise CMA’s staff has acquired over the years.

REVEL Hotel & Casino — CMA performed the remediation of groundwater and associated soils at the REVEL Hotel & Casino site. The twenty (20) acre site was suspected of containing thirteen (13) Underground Storage Tanks (USTs). CMA was contracted to remove thirteen (13) USTs. During the project, CMA discovered an additional three (3) USTs. Upon completing the removal of sixteen (16) USTs, nine (9) USTs were found to be leaking. CMA was contracted to remediate the nine (9) leaking UST areas. CMA excavated over 12,000 tons of oil-impacted soil while operating three (3) groundwater treatment systems to clean up oil impacted groundwater at the nine (9) leaking UST locations. Upon completion of the project, a letter of “No Further Action” was issued for this work.