K. Singh & Associates, Inc. (KSingh) was retained by the City of Racine to perform a Phase I Environmental Site Assessment (ESA) on seventeen properties along the north side of State Street. The Phase I identified three recognized environmental conditions within the subject study area. The recognized environmental conditions included a former salvage yard, a former dry cleaning facility, and a former gas station and garage with a hydraulic lift. A Phase II ESA was conducted in order to determine whether or not the recognized environmental conditions had impacted the soil and groundwater within the project area.
Sixteen soil borings were performed at the former salvage yard property. Five of the sixteen test borings were converted to groundwater monitoring wells. Soil quality test results indicated that near-surface soils were impacted with benzene, cadmium, lead, and arsenic concentrations that exceeded soil quality standards. The elevated metals contamination was detected at depths from 1 to 2.5 feet below grade. Soil contamination was not detected throughout the entire yard, but in isolated “hot spot” areas. The southern portion of the project corridor, where the gas station and hydraulic lifts were located, require significant remediation and groundwater monitoring.
Seven soil borings were performed on the former dry cleaner property. Seven soil samples were collected and submitted for laboratory testing of VOC and Stoddard Solvent. The test results collected indicated that near-surface soils were impacted with PERC, a chlorinated dry cleaning solvent. Elevated concentrations of PERC were detected in three of the test borings, at depths of 3.5 to 7.5 feet.
Based on the results of the environmental investigations, KSingh prepared remedial action plans which were approved by the WDNR. KSingh prepared Technical Specifications for the Asbestos Abatement, Environmental Remediation, and Building Demolition. Environmental Remediation activities were performed, with on-site supervision from KSingh.
Following completion of Environmental Remediation activities, KSingh completed groundwater natural attenuation assessment monitoring. Natural attenuation assessments documented that the groundwater risk for the site was successfully managed.
The site received closure from the State and has become a successful commercial development.