1502 WALL ST IMAGINE CHILDRENS MUSEUM 2022-08-25

List all known or suspected contaminants associated with this site in Table 1. Include contaminants previously remediated. Table 1 — Summary of Site Pollutant Constituents Constituent Location Depth Concentration (Pollutant) None N/A N/A N/A Proposed Construction Activities (1.2) Description of site development (example: subdivision): The Imagine Children's Museum is expanding to the south, replacing the existing parking lot. Some existing sidewalk and paving in the alleyway will need to be replaced in order to facilitate construction and utility connections. Description of construction activities (example: site preparation, demolition, excavation): Construction activities include demolition, site preparation, excavation, sawcutting, paving and utility connections. Description of site drainage including flow from and onto adjacent properties. Must be consistent with Site Map in Appendix A: Under existing conditions the sidewalk within the project area sheet flows into Hoyt Ave, where it flows north along the gutterline before entering the combined sewer system via a catch basin. Those conditions will be matched exactly under proposed conditions. Under existing conditions, the alleyway sheet flows runoff towards a flow line in the center of the alley, where it flows north before entering the combined sewer system. Under proposed conditions, those conditions will be matched exactly. Description of final stabilization (example: extent of revegetation, paving, landscaping): Final stabilization includes HMA paving in the alley, replacing the cement concrete sidewalks and driveways approaches, and landscaping one planter. Contaminated Site Information: Proposed activities regarding contaminated soils or groundwater (example: on-site treatment system, authorized sanitary sewer discharge): N/A