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City of Campbell State of California STORM WATER REGULATIONS This Notice is to inform you of existing Storm Water Quality Regulations NPDES Construction General Permit Construction projects disturbing an area of one acre or more are required to comply with: State of California “General National Pollutant Discharge Elimination System (NPDES) Permit for Discharges Associated with Construction Activities” (“Construction General Permit”) Compliance with this permit requires ALL of the following: • Applicant to submit a Notice of Intent (NOI) and pay an annual payment during the project’s construction period to : State Water Resources Board – see website below for fee schedule • preparation of a Storm Water Pollution Prevention Plan • use of City Approved Best Management Practices (BMP’s) to control storm water runoff, • BMP inspection and maintenance by applicant to determine adequacy and maintenance • File a Notice of Termination upon completion of construction. For copies of the Construction General Permit, the NOI, and additional permit and fee information consult the State Water Resources Control Board website at: POST-CONSTRUCTION STORMWATER QUALITY REGULATIONS (C.3) In order to comply with the City’s State-issued NPDES permit, No. 01-119, Campbell & other public agencies in the Santa Clara Valley are required to place additional Conditions of Approval related to storm water quality control on certain development projects. Non-exempt projects creating or replacing one acre or more of impervious surface may be subject to Hydromodification Management Plan (HMP) requirements (designed to control volume and duration of storm water runoff to prevent erosion of creeks and streams) depending on the project’s location within the City of Campbell. ---PAGE BREAK--- City of Campbell Projects belonging to the following land use categories, on public or private land, creating or replacing 5,000 sq. ft. or more of combined impervious surface area, including roofs, must incorporate Low Impact Design (LID) engineered stormwater treatment measures. These measures are State mandated to prevent pollutants from being washed into creeks and streams by storm water runoff from new and re-development sites. • Gas stations • Auto wrecking yards • Loading docks • Vehicle or equipment maintenance areas including washing and repair • Outdoor o Storage or handling of hazardous waste o Manufacturing o Food handling o Animal care o Horticultural activities o Industrial & commercial uses where pollutant loading cannot be mitigated through other post-construction source control and site design practices All other Non-exempt projects, on public or private land, creating or replacing 10,000 sq. ft. or more of impervious surface, including roof area, must incorporate Low Impact Design (LID) engineered stormwater treatment measures. Exempt projects are defined as: • Construction of one single-family home, which is not part of a larger common plan of development, with the incorporation of appropriate pollutant source control and design measures, and using landscaping to treat runoff from house-associated impervious surfaces such as from roofs, patios, driveways, sidewalks and similar surfaces • Sidewalks, bicycle lanes, trails, bridge accessories, guardrails, and landscape features • Routine maintenance and repair including roof or exterior surface replacement, pavement resurfacing, repaving and road pavement structural section rehabilitation within the existing footprint, and other reconstruction work within a public street or road right-of-way where both sides of that right-of-way are developed Conditions of approval will include the use and maintenance of BMP’s for site design and storm water treatment, which must be designed per approved numeric sizing criteria. General guidance on the selection and implementation of BMP’s and Storm Water Pollution Prevention Plans can be found on the California Storm Water Quality Association (CASQA) website at LID treatment measures can be found in the C.3 Storm Water Handbook – June 2016 For information contact: Roger Storz - (408) 866-2190 - [EMAIL REDACTED] Doris Quai Hoi - (408) 866-2157 - [EMAIL REDACTED]