The CP Environmental Group (CPEG) team conducted Phase I and Phase II Environmental Site Assessments, Ground–Penetrating Radar (GPR) Survey, Storage Tank Closure, Remediation and NESHAP Asbestos Survey on a 1.47 acre parcel. A Health and Safety Plan was prepared and followed for all intrusive activities. Removed three previously abandoned gasoline USTs and petroleum impacted soils from a former UST basin documented in a Corrective Action Completion Report (CACR).
The three gasoline USTs (two 500-gallon and one 1,000-gallon) were discovered near the southwest corner of the site during site redevelopment for the retail pharmacy in June and July 2001. Approximately 690 tons of impacted soil was removed from the UST area in 2001. Analytical results indicated that the petroleum impacts (benzene) had been remediated to below state action levels with the exception of a lead concentration in one sample, EP-South SW (8’).
Additional delineation of the lead impact and the excavation of additional material were conducted at IEPA request. The Addendum to the CACR, dated September 2003, documented collection of six additional soil samples from three locations along the southern property boundary in the vicinity of the former UST excavation. The soil borings were advanced south, southeast and southwest of the verification soil sample that had been found to contain elevated lead. Soil samples were collected for analysis from 8 feet below ground surface (bgs) and 16 feet bgs in each of the three borings. These depths correlate with the depth of EP-South SW (8’) and the bottom of the boring to assess for vertical migration. Analytical results of the lead analysis indicated that the lead impacts identified in soil sample EP-South SW (8’) was limited to a small portion of the former UST basin excavation sidewall. Additional soil was excavated during October 2004 to remove the soil containing elevated lead and the results are documented in a CACR addendum dated November 23, 2004. Site Closure was obtained under TACO, with a No Further Remediation letter issued by IEPA in February 2005.
TolTest/CPEG addressed environmental issues so that the developer could proceed with the redevelopment of the site with the least possible delay to the construction schedule. Additional soil impact delineation in 2003 and additional soil remediation was completed in 2004. Work efforts directed in the best interest of the client with concentration on timeliness, quality and cost control.
Total cost of project: $129,670