comprehensive site investigation and remediation objectives report

y Dalhart Avenue to the west, Normantown Road to the north, Illinois Route 53 to the east and
Alexander Circle to the south.
2.7 PREVIOUS SITE INVESTIGATIONS
The subsequent evaluations included within this CSI/ROR rely in part upon documentation of
investigations conducted by others. The documentation from prior historic site investigations—
primarily ERS—was reviewed for use in characterizing identified recognized environmental
conditions (RECs), but were not performed under the direction of V3 staff or the Licensed
Professional Engineer (LPE). The following sections summarize the results from multiple
investigations performed at the Site. The available information was reviewed by V3 and
summarized to provide historical context and support characterization of RECs at the Site.
Available analytical data collected during previous investigations are summarized and provided
in Tables 1.1. Sample locations are shown on Figure 3.2.
Copies of all available documentation related to the investigations summarized below are
located in Appendix A.
2.7.1 SITE INVESTIGATION COMPLETION REPORT, FORMER CLARK STORE
(EAST ADJACENT PROPERTY) SITE INVESTIGATION COMPLETION REPORT,
AUGUST 2007
On August 20, 2007 ERS of Illinois, Inc. submitted a Site Investigation Completion Report
(SICR) to the IEPA Leaking Underground Storage Program (LUST) for a former Clark Station
(now an active Phillips 66 service station) located at 645 North Independence Boulevard (IL
Route 53). The SCIR addressed diesel and gasoline impacts (Incident # 20041221) discovered
during a Site Investigation of the east adjacent property.
ERS advanced eight soils borings at the former Clark gas station and three soil borings off-site
to delineate and address impacts to soil and groundwater associated with a leaking
underground storage tank. Two of the borings (MW-9 and MW-10) were advanced and
converted into permanent monitoring wells on the east side of the Spartans’ Square Shopping
Center. Only well MW-10 is located in the Spartans’ Square Remediation Site. Analytical
results indicated that the concentrations of polynuclear aromatic hydrocarbons (PNAs) in
groundwater samples collected from both locations exceeded ROs for Class I groundwater.
See Appendix A.1 for investigation documentation.
The IEPA LUST on-line database currently identifies the property as Sandhu Petroleum, Inc.
and the LUST incident is still open. A Site Investigation Stage 3 Plan and Budget was approved
by IEPA with modifications in March 2009.
2.7.2 PHASE I ENVIRONMENTAL SITE ASSESSMENT, FEBRUARY 2008
V3 prepared a Phase I Environmental Site Assessment on the Site in February 2008 for the
Village of Romeoville. The report meets the American Society of Testing and Materials (ASTM)
Standard Practice for Environmental Site Assessments: Phase I Environmental Site
Assessment Process (Standard E1527-05) and the U.S. EPA November 1, 2005 Standards and
Comprehensive Site Investigation Report V3 Companies, 10
Spartans’ Square Shopping Center May 2010