CDIM’s engineers and scientists possess expert-level knowledge of the federal, state and local regulatory programs that govern water discharges from construction, development, industrial and municipal facilities. Through the effective combination of regulatory knowledge, engineering expertise and discharge reduction practices, CDIM engineers and scientists develop cost effective solutions to storm water problems. 

Our QSD/QSP/QISP trained professionals assist our clients in complying with the California CGP and IGP and with state-wide, regional or watershed MS4 permits.

CDIM provides the following storm water engineering and compliance services:

  • Designing BMPs for construction, development, industrial and municipal facilities including plans, specification, permitting and construction implementation
  • Storm water compliance database and GIS map development and maintenance
  • Preparing SWPPPs for industrial and construction projects, including evaluating results against NALs and preparing required Level I and Level II evaluations, and documenting compliance in SWRCB’s SMARTS database
  • Preparing Storm Water Control Plans that integrate LID with site design, including compliance with San Francisco's Storm Water Design Guidelines
  • Preparing defensible BAT/BCT assessments for BMPs
  • Permitting for NPDES, WDR and POTW discharges
  • Water quality objective/criteria evaluation to establish water quality based or technology based effluent limits for NPDES discharges
  • Monitoring program development and implementation, including performing inspections and sampling at client sites
  • Hydrologic and hydraulic modeling for watershed assessments, hydromodification and water collection system planning
  • Preparing required submittals and program elements to comply with MS4 permits 
  • Expert litigation support for Clean Water Act claims