What is a Manufactured Gas Plant (MGP)?
A. During the 1800s, in many towns and cities across the United States, manufactured gas was produced from materials such as coal and oil. The fuel produced at an MGP was used to light homes, businesses and street lamps. Prior to World War II, more than 5,000 such plants existed throughout the country, particularly in cities and towns in the Midwest and East. When the interstate pipeline introduced natural gas to the area in the 1950s, MGP’s rapidly disappeared.
Where is the site located?
A. The Site is located at the intersection of North Franklin Boulevard and Old Turnpike , Pleasantville, Atlantic County, NJ.
How was the MGP site affected?
A. The operations of the Pleasantville former MGP left by-products at the site. The site is being cleaned up under today’s environmental standards.
How is South Jersey Gas responsible
A. South Jersey Gas assumed environmental liabilities associated with the site when we acquired the Atlantic City Gas Company in 1951.
What work was completed?
A. SJG investigated the site for the presence of byproducts from the MGP process. All activities were completed in accordance with the NJDEP Technical Requirements for Site Remediation and under the oversight of the site’s Licensed Site Remediation Professional (LSRP). Impacts to soil and groundwater were identified as part of the findings of the investigation.
An interim remedial measure (IRM) was completed in May 2016 on Block 132 Lot 11 that included the excavation of MGP impacted material on the Ole Hansen property.
An additional IRM was completed in May 2017 on Block 103, Lot 27 that included the excavation of MGP impacted material. Two buildings were removed on Block 131, Lots 1 and 2. A Remedial Action Work Plan was submitted to the NJDEP.
From 2018 through 2019, South Jersey Gas removed an existing structure on site (storage garage) and subsurface infrastructure related to the former plant’s operations. Excavation and in-situ stabilization (use of stabilization materials) were conducted on approximately 150,000 tons of impacted soils.
Following the completion of soil remediation, all areas impacted were restored in accordance with City and County requirements.
- Public property within the remediation footprint: All sidewalks, public walkways, and curbing were replaced, as well as underground facilities including gas, water, and the storm water and sanitary sewer collection systems. Futhermore, South Jersey Gas donated a portion of property to the City utilized to realign the intersection of North Franklin Boulevard and Old Turnpike to increase vehicular line of site.
- Private property within the remediation footptrint: The South Jersey Gas Service Center is being modified to include customer parking spaces and a handicap ramp. Other excavation areas were restored with clean fill, compacted, graded, and covered with stone.
Above ground electric, cable, and telecommunications facilities will be returned to the original location by the utility providers at a later date.
A South Jersey Gas contractor will return in the Spring to complete final seeding and landscaping of designated areas.
Is drinking water affected?
A. No. The City of Pleasantville public water supply is not affected.
Will South Jersey Gas continue to perform monitoring of and report its groundwater data to the NJDEP?
A. Yes. South Jersey Gas has a series of groundwater monitoring wells that it will continue to sample quarterly. Once results from the groundwater analysis verify the system is protecting the surrounding groundwater as intended, sample frequency will likely be reduced to annually.
What are the contaminants of concern?
A. Contamination associated with historic MGP operations was detected in both saturated and unsaturated soils. The contaminants of concern that were detected include the volatile organic compounds (VOCs), semi-volatile organic compounds (SVOCs), and select inorganic constituents (IOCs):
VOCs – benzene, ethylbenzene, styrene, and xylenes
SVOCs – benzo(a)anthracene, benzo(a)pyrene, benzo(b)fluoranthene, benzo(k)fluoranthene, chrysene, dibenzo(a,h)anthracene, fluoranthene, fluorene, indeno(1,2,3-cd)pyrene, 2-methylnaphthalene, and naphthalene
IOCs: aluminum, arsenic, cadmium, cyanide, lead, manganese, and mercury
The contaminants of concern were detected in concentrations above the NJDEP soil cleanup criteria.