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
Infiltration test and reports to support green infrastructure, including: Simple Infiltration Tests, Double Ring Infiltrometer Test by ASTM D3385—09, Small Pilot Infiltration Test (PIT) and Large PIT