REAL ESTATE DEVELOPMENT
The CP Environmental Group (CPEG) team was hired to perform environmental, asbestos, geotechnical and underground storage tank (UST) removal services in support of the redevelopment of a one acre site consisting of four individually owned parcels into a retail pharmacy. The parcels included six buildings: a Sunoco (Mike’s) gasoline retail/service station, three automotive repair facilities (Advanced Auto Body, Winter Bottom Auto and Collision Specialties) and residential duplex with detached garage.
The Phase I ESA indicated that groundwater impacts had been previously addressed at the Mikes Sunoco, (statewide health standards for ethylbenzene, toluene, xylene, cumene and naphthalene and site specific standards for benzene and methyl tert butyl ether [MTBE]), and that eight USTs, two aboveground storage tanks and three hydraulic lifts were present at the site. A geotechnical subsurface investigation and an asbestos survey were conducted concurrently with the Phase I ESA to evaluate the site conditions for the proposed redevelopment of the site. A geophysical survey conducted as part of the Phase II ESA identified anomalies with the potential to be buried metallic objects (USTs) in addition to the eight USTs registered at the site. However, no soil or groundwater impacts were identified in samples collected during the Phase II ESA. The removal of the known UST systems and the suspected USTs was recommended.
The eight known USTs and the three hydraulic lifts were removed from the site in September 2002. Six additional USTs were uncovered on the Mike’s Sunoco portion of the site. Four USTs had previously been closed in place and filled with inert material. Of the two additional USTs uncovered, one used motor oil UST was discovered and removed during the UST removal activities (September 2002) and one used motor oil was discovered (October 25, 2002 and removed November 6, 2002) during construction activities. During the initial removal of the UST System at Mikes Sunoco, including the dispensers, soil impacts were observed in the vicinity of the dispenser system. (The Phase II investigation had not sampled in the vicinity of the dispensers because the system was still in service at that time). Soil impacted with petroleum hydrocarbons (MTBE and naphthalene) were identified in the vicinity of the dispensers and the second used motor oil UST. Approximately 244 tons of petroleum impacted soil were removed and disposed off-site.
Findings of the Underground Storage Tank Removal and Remedial Activities indicated that soil impacts that exceeded the state-wide health standards had been remediated and attainment soil samples indicated that the statewide health standards were met under Act 2.
CPEG prepared an Underground Storage Tank Removal and Remedial Activities Report for the site in accordance with DEP’s Chapter 245 regulations which was subsequently approved as submitted. DEP also granted a Release of Liability for the site to our client. Also in support of site redevelopment, CPEG provided additional services including the geotechnical subsurface investigation, and asbestos survey at the existing site structures in addition to the remedial investigation and environmental site closure to streamline the site development process.
Total cost of project: $125,800
CPEG Business Solutions… Yield Advantages
UST and hydraulic lift removal and soil remedial activities were conducted concurrent with demolition and construction activities to facilitate an aggressive site redevelopment schedule. This project was successfully completed in the required time frame only by outstanding Teamwork involving CPEG working closely with the private developer, pharmacy chain (purchaser), real estate investment trust group, PaDEP, attorneys and contractors.