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Engineering Documents

Documents and Links
Here you will can find different websites and documents related to past and current engineering business.  To use this page, click the relevant heading and select the desired link or document. You may have to manually open the document from your computer's downloads folder in order to view it.
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Document Center

The Document Center provides easy access to public documents. Click on one of the categories below to see related documents or use the search function.

Categories always sorted by seq (sub-categories sorted within each category)
Documents sorted by _RECORDID in Descending Order within category

Illinois EPA Documents4 documents

  • Illinois EPA Permit #IL0066818 dated 08/05/15 for Combined Sewer Overflows
    document _recordid 3068
  • Illinois Environmental Protection Agency
    document _recordid 2983
  • 2014-2015 Annual NPDES Permit for Stormwater Discharges from Municipal Separate Storm Sewer Systems (MS4) Report
    document _recordid 2981
  • Hinsdale Long Term Control Plan Monitoring Report May 2014 - May 2015
    document _recordid 2966

Notices1 document

  • Oak Street Bridge Project Site
    document _recordid 3065

Useful Resources4 documents

  • 30-year NOAA Rainfall data for Chicago O'Hare
    document _recordid 3078
  • Illinois Department of Transportation
    document _recordid 2984
  • Hinsdale Benchmarks
    document _recordid 2603
  • DuPage County Stormwater Management Division webpage
    document _recordid 2601

Floodplain Information6 documents

  • Letters of Map Amendment (LOMA)
    document _recordid 2979
  • National Flood Hazard Layer
    document _recordid 2978
    Displays effective flood hazards and Letters of Map Change
  • Changes Since Last FIRM (CSLF) Map
    document _recordid 2977
  • Preliminary Flood Insurance Rate Maps
    document _recordid 2976
  • Effective Flood Insurance Rate Maps
    document _recordid 2975
    Letters of Map Change are not incorporated
  • Flood Insurance & the National Flood Insurance Program
    document _recordid 2973