Title
143rd Street and LaGrange Road Intersection Improvements - Underground Orphan Storage Tank Removal
History
During the course of work undertaken for the watermain relocation project associated with the 143rd Street and LaGrange Road Intersection Improvement project, certain contaminated soils were encountered which required special handling and disposal. In addition to special soils, an undocumented liquid underground storage tank (Orphan Tank) was discovered which requires removal and disposal.
The Orphan Tank discovered at the southeast corner of 143rd Street and LaGrange Road appears to be approximately 700 gallons in size and is partially filled with water. The location of the Orphan Tank is in conflict with future structures at this location. The most efficient means of accommodating the planned construction required of the upcoming improvements is the advance removal of the tank.
This location is also the site of reported petroleum leaking underground storage tank (LUST) releases from former Citgo and 7-Eleven Service Station operations. Known contamination is present at the location of the Orphan Tank, presumably the result of the reported LUST incidents. Therefore, it is likely that the Office of State Fire Marshall (OSFM) will require that a release report be filed with the Illinois Emergency Management Agency (IEMA) when the UST is removed.
During the course of previous advance work requiring environmental oversight, management and special soils disposal, environmental assessment and oversight services were requested and provided by V3 Engineers and Consultants and special soils disposal services were requested and provided by RAMSCO, INC. Staff finds the work and associated fees for previously performed work by both firms reasonable and their service professional and timely.
In an effort to expedite this work and contain the professional and construction costs associated with this unanticipated work, Staff requested quotes from bot...
Click here for full text