comprehensive site investigation and remediation objectives report

‣ The Village of Romeoville maintains a limited groundwater ordinance which prohibits
the use of groundwater for potable purposes (See Figure 2.2). To exclude the
groundwater ingestion route, the ordinance, accepted by IEPA for use an institutional
control, will be invoked as a groundwater use restriction at the Site and adjoining
properties and will move the compliance point to the Site boundaries.
• Maintain barriers to exclude exposure routes as applicable to specified areas of
ingestion and inhalation, as necessary.
[Note: At this time it is anticipated that soil are isolated and limited and will be excavated
and disposed to avoid the need for engineered barriers to exclude industrial-commercial
soil ingestion and inhalation exposure pathways.
As per Section 742.310(b), the soil ingestion route may be excluded if an appropriate
engineered barrier, as set forth in Subpart K, is installed.
The No Further Remediation (NFR) letter will require current and future property owners to
maintain the integrity of any specified barriers, as well as restrict all subsurface construction to
qualified personnel (i.e., in accordance with applicable OSHA regulations) as applicable to the
specified areas. Section 742.320 specifies the conditions under which the groundwater
ingestion exposure route may be excluded.
At this time it anticipated that the identified ROs, along with the described remedial measures,
will be proposed in a future Remedial Action Plan (RAP) to address and exclude exposure
routes at the Site:
Active Remediation
Active remediation is anticipated to address the identified soil saturation PCE location. In
addition, excavation will eliminate the Tier 1 ROs exceedances identified at the following sample
locations:
• SM-GP-108,
• SM-GP-107, and
• SM-GP-08.
Based on the approval of Tier 1 and 2 evaluations and the successful implementation of
remedial measures and institutional controls, the Site can qualify for comprehensive NFR letter
determination.
Comprehensive Site Investigation Report V3 Companies, 30
Spartans’ Square Shopping Center May 2010