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What’s New in Stormwater Requirements for Development Projects?

What’s New in Stormwater Requirements for Development Projects?. Jill Bicknell, P.E. EOA, Inc. New Development Workshop May 22, 2013. Outline of Presentation. C.3 Requirements Effective in FY 12-13 New Program Guidance and Tools C.3 Requirements for FY 13-14 (Regional Submittals)

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What’s New in Stormwater Requirements for Development Projects?

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  1. What’s New in Stormwater Requirements for Development Projects? Jill Bicknell, P.E. EOA, Inc. New Development Workshop May 22, 2013

  2. Outline of Presentation • C.3 Requirements Effective in FY 12-13 • New Program Guidance and Tools • C.3 Requirements for FY 13-14 (Regional Submittals) • C.3 Issues for the Next Permit • Questions and Answers

  3. The Year in Review New Requirements Took Effect onDecember 1, 2012: Special Land Use and Road Requirements for Public Projects Low Impact Development (LID) Requirementsfor Public Projects Site Design Requirements for Small Projects and Single Family Home Projects Discussions on the next Municipal Regional Permit (MRP) began!

  4. Special Land Use Requirements “Special land use categories”: Retail gasoline outlets Auto service facilities Restaurants Uncovered parking lots - stand alone or part of another use (includes top level of parking structure unless plumbed to sanitary sewer) Projects in these categories that create and/or replace 5,000 sq. ft. or more of impervious surface must implement site design, source control, and treatment measures

  5. Road and Trail Requirements C.3 requirements apply to road and trail projects that create and/or replace 10,000 sq. ft. or more of contiguous impervious surface New roads Sidewalks and bike lanes built as part of new roads Widening of existing roads with traffic lane(s) Trails >10 ft wide or < 50 ft from creek bank

  6. Road and Trail Projects NOT Regulated Roadway reconstruction; Road widening that does not add a travel lane; Sidewalks and bike lanes along existing roads; Impervious trails <10’ wide, >50’ from creek; Sidewalks, bike lanes and trails that drain to vegetated areas or made of permeable paving; Routine maintenance and repair; Pavement resurfacing within existing footprint.

  7. LID Treatment Requirements “LID treatment” is: Rainwater harvesting/reuse, Infiltration, Evapotranspiration, Or, if these are infeasible, biotreatment. Feasibility analysis (using standard forms) is required for public and private projects

  8. Effective Dates What if the project is already “in the pipeline”? Projects in the review process are exempt from requirements for LID treatment, 5,000 sq.ft. threshold, and road/trail project applicability if: Public Projects – If funding committed and construction scheduled to begin by December 1, 2012 Private Projects – Deemed complete before 12/1/09 and project applicant is “diligently pursuing the project” Deemed complete after 12/1/09 and project applicant receives final discretionary approval before 12/1/11

  9. Site Design Requirements for Small and Single Family Home Projects Provision C.3.i: Small projects > 2,500 sq. ft. and < 10,000 sq. ft. and detached single family homes > 2,500 sq. ft. must include one of six site design measures: Direct roof runoff into cisterns or rain barrels; Direct roof runoff onto vegetated areas; Direct sidewalk & patio runoff onto vegetated areas; Direct driveway & parking lot runoff onto vegetated areas; Construct sidewalks & patios with permeable surfaces; Construct bike lanes, driveways & parking lots with permeable surfaces

  10. Site Design Guidance Brochures • Brochures prepared by the Bay Area Stormwater Management Agencies Association: • Landscape Designs for Stormwater Management • Rain Gardens • Rain Barrels and Cisterns • Pervious Paving • Brochures available at:www.flowstobay.org(click on “Municipalities”, “New Development”, “Flyers”)

  11. Additional Program Guidance • Flyer: “New Stormwater Control Requirements for Projects that Create and/or Replace 2,500 to 10,000 Sq. Ft. of Impervious Surface” • C.3.i Stormwater Checklist for Small Projects • C.3 Regulated Projects Checklist • Flow Chart of C.3 / C.6 Stormwater Review Process • Hydraulic Sizing Method Worksheets • C.3 Stormwater Technical Guidance – major update in progress, to be completed end of June • Appendix L: Site Design Requirements for Small Projects – available online now

  12. C.3 Requirements for FY 13-14 • No new requirements for development projects or individual agencies • BASMAA Regional Submittals • Green Streets Pilot Project Summary Report (due 9/15/13) • Status Report on Application of Feasibility/Infeasibility Criteria(due 12/1/13)

  13. Green Streets Report • Per C.3.b, Permittees required to: • Construct 10 pilot green street/parking lot projects within Bay region by end of permit term • Conduct monitoring or modeling to show water quality benefits achieved • Report on any projects in their jurisdictions in annual reports • Collectively submit a summary of all projects completed by January 1, 2013 as part of FY 12-13 Annual Report

  14. Green Streets Report • Ten projects will be substantially completed by 12/1/14 and seven other projects are being funded/designed • SMCWPPP Projects: Donnelly Ave, Burlingame Bransten Rd, San Carlos

  15. Green Streets Report • Schedule for Completion: • Draftreportto BASMAA DevelopmentCommittee – late May 2013 • DC reps share with local programs – June/July • Reviseddraftto BASMAA DC - August • Final draftto SMCWPPP forapproval – August • Final reportto BASMAA forapproval and submittaltoWaterBoard– late August • Due date – 9/15/13

  16. Feasibility Status Report • Low impact development (LID) treatment defined as rainwater harvesting/use, infiltration, or evapotranspiration, or if those are infeasible, biotreatment • BASMAA Feasibility Criteria Report submitted to Water Board on 12/1/2010 • Beginning 12/1/2011 (12/1/2012 for public projects) – 100% LID treatment required

  17. Feasibility Status Report • Permitteesmustsubmit Status ReporttoWaterBoardby 12/1/13 containing: • Mostcommonfeasibilitycriteriaused • Barriers/constraintstoharvesting/use and infiltration, and strategiestoaddress • Proposedchangestofeasibilitycriteria • GuidancetoPermitteesfor use

  18. Feasibility Status Report • Progressto date: • BASMAA developingreportvia in-kindcontributionsfrom SMCWPPP, SCVURPPP and CCCWP and consultanthelp • Data collectioncompletedfor FY 11-12 approvedprojects; FY 12-13 data to be collected in Fall 2013 • Additionalmodelingstudiesbeingconductedoninfiltrationcapacity of bioretentionsystems in varioussoiltypes • Reportsectionsbeingdrafted

  19. Feasibility Status Report • Schedule forCompletion: • Draftreportto BASMAA DevelopmentCommittee – late June • DC reps share with local programs – July/Aug • Reviseddraftto BASMAA DC - September • Final draftto SMCWPPP forapproval – October/November • Final reportto BASMAA forapproval and submittaltoWaterBoard – late November • Due date – December 1, 2013

  20. C.3 Topics for MRP Reissuance-Water Board Issues • Regulatedprojectthreshold – dropto 5,000 sf of impervioussurface • Road reconstruction/greenstreetrequirements – changes? • SpecialProjects – changetocriteria?(basedonreview of reports) • Perviouspaving – better define design and maintenancerequirements

  21. C.3 Topics for MRP Reissuance-Water Board Issues, cont. • Bioretention – adddetailsregardingdesign, soils, planthealth/irrigation • Hydromodificationmanagementcriteriaconsistentcriteriathroughoutregion • BMP installationinspections • Conductduringconstruction, integrateintobuilding/occupancyapprovals • Takeenforcementactionifimproperinstallation

  22. Questions? JillBicknell, P.E. 408-720-8811 x1 jcbicknell@eoainc.com

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