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NPDES Permit

In Contra Costa, public streets and sidewalks are connected directly to water habitats through a system of storm drains, pipes, ditches and channels.  These municipal stormwater systems convey runoff that may result after rain events into local creeks, bays and/or deltas without any treatment.  Unfortunately, if municipal, industrial and construction activities are not properly managed, then stormwater systems can also bring trash, chemicals, sediment, and other pollutants to local water bodies. 

In the 1970s, the National Pollutant Discharge Elimination System (NPDES) Stormwater Permit program was created to prevent stormwater runoff from polluting surface waters.  The NPDES requires public agencies to obtain a permit before discharging untreated stormwater into waterways.  

The Contra Costa Clean Water Program's (CCCWP's) 21 agencies are Permittees in the Municipal Regional Stormwater NPDES Permit (PDF) (MRP) issued by the California Regional Water Quality Control Board for the San Francisco Bay Region (RWQCB).  This means that each Contra Costa Permittee must prohibit the discharge of anything other than rain into its jurisdiction's stormwater system.

 

(Coming Soon) Overview of New Permit Requirements in MRP 3.0

The San Francisco Bay Regional Water Quality Control Board has adopted the third reissuance of the Municipal Regional Stormwater Permit, or MRP 3.0.  This reissuance includes significant changes and additional requirements in certain provisions. Summary of key changes coming soon. 

Please note that the MRP related resources referenced in this site are in the process of being updated to reflect new permit requirements.  Stay tuned!

 

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MRP 3.0 Provisions C.2 through C.22 include requirements for one-time and ongoing activities that the Permittees must implement over the course of the Permit term, which began July 1, 2022 and extends to June 30, 2027. The table below shows some key Permit provisions and links to pages on this website that describe Program activities to assist Permittees to implement the provision.

Permit Provision

Provision Title

Relevant Pages on cccleanwater.org

Additional Notes

C.2

Municipal Operations

Municipal Operations

New requirements for Coorporation Yard SWPPPs, Best Management Practices (BMPs), and Trainings (C.2.f., C.2.h.) 

C.3

New Development and Redevelopment

C.3 Requirements: Development

 

C.3.j.

Green Infrastructure Planning and Implementation

Green Infrastructure

 

C.4

Industrial and Commercial Site Controls

Business Inspections

New requirements for Industrial and Commercial Business Inspection Plans (C.4.b.)

C.5

Illicit Discharge Detection and Elimination (IDDE)

Report Illegal Dumping and Spills

Illicit Discharges

New requirements for legal authority, spill response program, mobile sources, tracking, Enforcement Response Plans (ERP), and Municipal Separate Storm Sewer (MS4) maps (C.5.a.-f.) 

C.5.e.

Control of Mobile Sources

Mobile Cleaners and Businesses Brochure (PDF)

Carpet Cleaners Brochure (PDF)

Inventories must be updated at least annually.

C.6

Construction Site Control

Requirements for Construction

 

C.7

Public Information and Outreach

Residents/Community

 

C.7.e

Watershed Stewardship Collaborative Efforts

Volunteer

 

C.7.f.

School-Age Children Outreach

Schools

 

C.8

Water Quality Monitoring

Monitoring/Assessment

 

C.8.d.

Creek Status Monitoring

Creek Status

 

C.8.f.

Pollutants of Concern

Pollutants of Concern

 

C.9

Pesticides Toxicity Control

Yards, Gardens, and Pets

Pesticides

 

C.10

Trash Load Reduction

Trash/Litter

Trash BMPs for Businesses Brochure (PDF)

 

C.11

Mercury Controls

Pollutants of Concern

Mercury Contamination Brochure (Don’t Trash Fluorescent Bulbs (PDF)

 

C.12

Polychlorinated Biphenyls (PCBs) Controls

Pollutants of Concern

 
C.13 Copper (Cu) Controls Copper  

C.14

Bacteria Control for Impaired Water Bodies

 

Provision not relevant to CCCWP

C.15

Exempted and Conditionally Exempted Discharges

 

 

C.15.v.

Discharge Type – Swimming Pool, Hot Tub, Spa, and Fountain Water Discharges

Draining Pools and Spas Brochure (PDF)

 
C.16 Areas of Special Biological Significance   Provision not relevant to CCCWP

C.17

Discharges Associated with Unsheltered Populations and Homelessness   New
C.18 Control of Sediment Discharges in Coastal San Mateo   Provision not relevant to CCCWP
C.19 East Contra Costa County   Relevant to eastern Contra Costa municipalities (Antioch, Brentwood, Oakley, Unincorporated County, CCCFCWCD)
C.20 Cost Reporting    
C.21 Asset Management    
C.22 Annual Reporting  

Annual Reports of each Fiscal Year (July 1 through June 30) must be submitted to tSeptember 30.