City of Stockton / San Joaquin County

Stormwater Quality Control Criteria Plan (SWQCCP)

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Compare each cited field to the official PDF before relying on it. What this means

Joint Stockton/SJC SWQCCP March 2025 FULL FINAL. Pipeline excerpt repair removed 4 unlocated citation(s).

Fields not found in document: design_criteria.design_storm_return_periods_years, design_criteria.required_hydrologic_hydraulic_software, document_metadata.state_code, document_metadata.version_or_edition, document_metadata.adoption_or_effective_date, document_metadata.last_revised_date

Other manuals in California: Alameda Countywide Clean Water Program (ACCWP) / City of Fremont, California, California Department of Transportation (Caltrans), California Department of Transportation (Caltrans), City of Anaheim, City of Bakersfield, City of Chula Vista, City of Long Beach, City of Oakland, City of Sacramento, City of San Diego, City of San Francisco, City of San Jose / Santa Clara Valley (SCVURPPP), City of Santa Barbara, City of Santa Rosa, County of Los Angeles, County of Orange, Fresno Metropolitan Flood Control District, Riverside County, San Bernardino County, Tahoe Regional Planning Agency (Lake Tahoe Region)

Document Metadata

Jurisdiction level

Special District

“City of Stockton and San Joaquin County”
FAQ / applicability

State

Not found in document

No evidence cited

Version / edition

Not found in document

No evidence cited

Adoption / effective date

Not found in document

No evidence cited

Last revised date

Not found in document

No evidence cited

Relationship to state manual

independent

“Regionwide Permit / Statewide Trash Amendments”
Background

Design Criteria

Design storm return periods (years)

Not found in document

No evidence cited

Water quality volume method

Priority Projects must meet Volume Reduction Requirement (VRR): reduce post-project runoff to at or below pre-project volumes for the 0.51-inch storm depth (average 85th percentile). VRR is independent of Stormwater Quality Design Volume (SQDV) / Stormwater Quality Design Flow (SQDF). Also apply site design, source, volume reduction, and treatment controls (bioretention, infiltration, extended detention, etc.).

“project runoff volumes for the 0.51-inch storm depth, which is the average 85th”
Section 5.2 VRR

Peak flow calculation method(s)

Volume Reduction Requirement hydrology (pre vs post for 0.51-inch storm), SQDV / SQDF treatment sizing (Appendix T-0), LID treatment control design worksheets

“VRR is a separate and independent requirement from the Stormwater Quality Design Volume (SQDV)”
Section 5

Hydrologic/hydraulic software

Not found in document

No evidence cited

Approved BMP categories

Site design controls, Source controls, Volume reduction measures (VRMs), Bioretention, Infiltration basin / trench, Extended detention basin, Treatment controls

“Bioretention / Infiltration Basin / Extended Detention Basin”
Chapter 6 fact sheets