Post-Construction Storm Water Management Program: Planning, Design, Construction, and Operation. Presenters:
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1 Post-Construction Storm Water Management Program: Planning, Design, Construction, and Operation Presenters: Environment, Health & Safety (EH&S) Kimberly O Connell, UC San Diego April 2014 (draft) Charlotte Strem, UCOP Lisa Moretti, UC Davis Courtney Trask, UC Santa Cruz
2 The University of California, Office of the President is a Registered Provider with The American Institute of Architects Continuing Education Systems. Credit earned on completion of this program will be reported to CES Records for AIA members. Certificates of Completion for non-aia members are available on request. This program is registered with the AIA/CES for continuing professional education. As such, it does not include content that may be deemed or construed to be an approval or endorsement by the AIA of any material of construction or any method or manner of handling, using, distributing, or dealing in any material or product. Questions related to specific materials, methods, and services will be addressed at the conclusion of this presentation.
3 Learning Objectives Identify the new Municipal Separate Sewer System (MS4) Phase II permit regulations for new development and redevelopment projects. Identify your role and the roles of other campus staff in meeting post-construction storm water permit requirements and in reducing storm water pollution. Prevent storm water pollution and impacts to the watershed. Learn how to effectively reduce risk of litigation or fines.
4 Training Outline Phase II Small MS4 Storm Water Permit Overview Post Construction Storm Water Management Requirements Example Projects Alternative Post-Construction Storm Water Management Program Campus Staff Roles and Responsibilities Connection with LRDPs and CEQA Campus Construction Design Standards Operation and Maintenance Requirements Campus Discussion
5 Introduction Changes in storm water regulations Urban storm water runoff is a source of impairment in CA How can we treat storm water as a resource and also protect water quality of receiving water bodies? What are the consequences of not managing storm water runoff?
6 Phase II Small Municipal Separate Storm Sewer System (MS4) Permit Purpose: Prevent storm water pollution Utilize storm water as a resource Components of the Phase II Small MS4 Permit: Education and Outreach Public Involvement and Participation Illicit Discharge Detection and Elimination Pollution Prevention/Good Housekeeping Construction Site Runoff Control Post-Construction Storm Water Management Program Program Effectiveness Assessment and Improvement
7 Post-Construction vs. Construction Post-Construction Storm Water Management: Construction Storm Water Management: Post-construction storm water management requires: - Planning - Design - Construction - Operation & Maintenance This presentation does not cover SWPPPs and construction BMPs.
8 Post Construction Storm Water Design Management Program Section F.5.g. of the Small Non-Traditional MS4 Permit Requirements Planning for storm water for new construction Designing and constructing storm water features in accordance with MS4 permit requirements Operating and maintaining storm water features in accordance with their design
9 Post Construction Storm Water Design Standards Applicability Applies to: projects that create and/or replace 2,500 square feet or more of impervious surface Effective: July 1, 2014 Photo source:
10 Project Exemptions Regulated projects that have been designed, approved, and funded prior to July 1, 2014 Interior remodels Routine maintenance or repair projects such as: Maintenance, repair, and replacement work on existing underground utilities Building roof or exterior wall surface replacement Pavement or asphalt resurfacing within the existing footprint Sidewalk replacement within an existing footprint Routine replacement/repair of damaged pavement/asphalt
11 For Projects that create and/or replace: < 2,500 sq. ft. impervious surface Between 2,500 and 5,000 sq. ft. impervious surface area > 5,000 sq. ft. impervious surface area No Storm Water Management Required Implement one or more Site Design Measures A Regulated Project LID Design Standards Required
12 Site Design Measures and Low Impact Development Site Design Measures reduce project site runoff Low Impact Development (LID) is a land development approach that manages storm water by preserving or re-creating landscape features that treat storm water as a resource. Jess S Jackson Sustainable Winery Building grassy swale allows storm water to infiltrate. Disconnection of drain spouts at Veterinary Medicine Instructional Facility.
13 Site Design Measures Projects that create and/or replace between 2,500 and 5,000 sq. ft. of impervious surface must implement one or more of the following: 1) Stream Setbacks and Buffers 2) Soil Quality Improvement and Maintenance 3) Tree Planting and Preservation 4) Rooftop and Impervious Area Disconnections 5) Porous Pavement 6) Green Roofs 7) Vegetated Swales 8) Rain Barrels and Cisterns
14 Site Design Measures OPTION 1 On project site OPTION 2 Off project site but within campus and in same watershed OPTION 3 Combination of on-site and off-site Options for implementing site design measures on project site or at another location on campus within the same watershed varies from campus to campus. Please work with your campus storm water manager.
15 Site Design Measures 1) Stream Setbacks and Buffers A vegetated area that exists or is established to protect a natural water system Drawing Source:
16 Site Design Measures 2) Soil Quality Improvement Improvement and maintenance of soil through soil amendments and creation of microbial communities Photo source: Wikipedia "compost"
17 Site Design Measures 3) Tree Planting and Preservation Planting and preservation of healthy, established trees (deciduous and evergreen) Photo from Flickr- user"woodleywonderworks"
18 Site Design Measures 4) Rooftop and Impervious Area Disconnection Rerouting of rooftop/impervious areas from storm drainage system and into rain barrels, cisterns or permeable areas UC San Diego Photo source:
19 Site Design Measures 5) Porous or Pervious Pavement Pavement that allows runoff to pass through it, thereby reducing runoff and filtering pollutants, and slowing storm water flow Photo source: ja.wikipedia.org "pervious pavement
20 Site Design Measures 6) Green Roofs Vegetative layer growing on a roof (rooftop garden) that absorbs rain, filters pollutants, and decreases storm water runoff Green roof on Keeling Apartments at UC San Diego
21 Site Design Measures 7) Vegetated Swales Vegetated, open channel designed to treat and attenuate storm water Photo taken by UCB
22 Site Design Measures 8) Rain Barrels and Cisterns System that collects and stores storm water runoff from roofs or other impervious surfaces for reuse Photo source: Rain barrel and planter box system at Scripps Institution of Oceanography
23 LID Design Standards (Low Impact Development) Required for Regulated Projects defined as projects that create and/or replace 5,000 sq. ft. or more of impervious surface: Site Design Measures Source Control Measures Numeric Sizing Criteria for Storm Water Retention and Treatment Storm Water Treatment and Hydromodification Management Measures
24 LID Design Standards Source Control Measures Source control measures should be designed, constructed, inspected, and operated to control pollution-generating activities and sources, such as: Spills or leaks Floor drains Building and grounds maintenance Fuel dispensing areas Food service operations Storage of solid waste Vehicle and equipment cleaning Vehicle and equipment maintenance Indoor/outdoor pest control Fire Sprinkler Test Water Source control measures should be designed consistent with California Stormwater Quality Association s (CASQA) Stormwater BMP Handbook for New Development/ Redevelopment. For O&M procedures, consult CASQA s Stormwater BMP Handbook for Municipalities.
25 LID Design Standards Source Control Measures (continued) Source control measures should be designed, constructed, inspected, and operated to control pollution-generating activities and sources, such as: Pools, decorative fountains, and other water features Parking/storage area maintenance Loading docks Outdoor storage of equipment or materials Drain or wash water from boiler drain lines, condensate drain lines, rooftop equipment, drainage sumps, and other sources Non-storm water discharges Source control measures should be designed consistent with California Stormwater Quality Association s (CASQA) Stormwater BMP Handbook for New Development/ Redevelopment. For O&M procedures, consult CASQA s Stormwater BMP Handbook for Municipalities.
26 For projects that create and/or replace >5,000 sq. ft. For all Regulated Projects, Low Impact Development Design Standards required. If impervious surfaces increase by.less than 50%.greater than 50% Existing Building = 12,000 sq ft Existing Building = 12,000 sq ft Building Expansion to 17,500 sq. ft. Runoff from NEW impervious area must be treated Building Expansion to 21,000 sq. ft. Runoff from existing and new impervious area must be treated
27 LID Design Standards Site Design Measures Infiltrate the 85 th percentile rainfall event as determined in the Numeric Sizing Criteria methods using Site Design Measures. Use the Post-Construction Water Balance Calculator to verify that the 85 th percentile event has been captured Determine if there is remaining runoff to be addressed. If remaining runoff needs to be addressed, then SW Treatment/ Hydromodification is required through bioretention or equivalent
28 LID Design Standards Storm Water Treatment and Retention Storm water treatment and retention must be designed to evapotranspire, infiltrate, harvest/use and/or biotreat storm water using one of the following sizing criteria : Volumetric criteria: For detention basins, retention basins, and infiltration areas Flow-based criteria: For swales, sand filters, and screening devices Photos source: CASQA BMP manual for New Development and Redevelopment
29 LID Design Standards SW Treatment/ Hydromodification Bioretention: Facilities designed to infiltrate, evapotranspire, and/or biotreat runoff. Specific guidelines outlined in MS4 permit Section F.5.g.2.d. CASQA s BMP Stormwater Handbooks and the Central Coast Low Impact Development Initiative are great resources!
30 Bioretention Examples Parking structure bioretention UC San Diego Medical Center Parking lot bioretention
31 Bioretention Examples Housing Area at Eleanor Roosevelt College, UC San Diego
32 Alternatives to Bioretention Planter Boxes/Tree Wells Proprietary Devices such as Modular Wetland Systems
33 Sample Projects (>5,000 sq. ft.) Existing building before expansion project Prior to construction: 5,000 sq. ft. impervious surface
34 Sample Projects (>5,000 sq. ft.) > 50% increase of Impervious Area Expanded Building New Parking Lot New construction: 12,000 sq. ft. impervious surface
35 Sample Projects (>5,000 sq. ft.) > 50% increase of Impervious Area Expanded Building New Parking Lot Disconnected drainspouts Bioretention Area Bioswale Area New construction: 12,000 sq. ft. impervious surface
36 Sample Projects: Parking Lot Retrofits Before: After:
37 Alternative Post-Construction Storm Water Management Program Multi-benefit projects can propose alternative plans if they address water quality as well as one or more of the following: Water supply Flood control Habitat enhancement Open space preservation Recreation Climate change Requires public comment period and approval of RWQCB.
38 Post-Construction Requirements Summary Between 2,500 and 5,000 sq. ft. impervious surface area > 5,000 sq. ft. impervious surface area Implement one or more Site Design Measures A Regulated Project LID Design Standards Required
39 Roles and Responsibilities Capital Planners/Project proponents - Include $ in project budget for storm water solution (may be equipment, landscape materials) Physical Planners - Anticipate space needs of storm water solutions for campus as a whole, and individual projects. Environmental Planners - Reflect storm water regulations in environmental document analysis. Provide campus wide and project hydrologic info.
40 Roles and Responsibilities Design Team - Do project specific calculations of storm water runoff. Design projects to meet storm water regs. Consult with and inform Operations and Maintenance as to maintenance requirements of any proposed solution. Project managers, construction managers and inspectors Verify requirements are incorporated into specifications for project design and into construction specifications. Transmit design and relevant documentation to campus storm water manager. Inform environmental & campus planners of storm water solutions. Verify storm water solutions are built in accordance with specifications. Communicate maintenance requirements to grounds or facility manager.
41 Roles and Responsibilities Facility Managers - Participate in the design review process; Budget for maintenance of storm water system Grounds/Operations/Maintenance - Participate in the design review process. Coordinate with project managers on O&M issues related to optional storm water solutions. Maintain storm water system solutions Campus Storm Water Manager- Document requirements are met. Train staff. Update campus standards and design guidelines and Division I/II specifications. Verify project designs and implemented measures meet requirements
42 Storm Water Connection to LRDPs and CEQA Long Range Development Plan (LRDP) land use plan for the campus contains 4 required elements: Land Use Circulation Open Space Utilities
43 Storm Water Connection to LRDPs and CEQA Long Range Development Plan incorporates overall campus hydrology: Flood Management Water Use Water Flow Watershed Management
44 Storm Water Connection to LRDPs and CEQA LRDP EIRs Environmental Impact Reports evaluate impact of projected development for 10+ years Hydromodification Pollutant Sources/ Water Quality Soil & Water Conservation. Shoreline Erosion Advisory Service.
45 Storm Water Connection to LRDPs and CEQA CEQA Hydrology and Water Quality questions: Will the project: a) Violate any water quality standards b) Substantially deplete groundwater c) Alter drainage pattern such that erosion would occur d) Alter drainage pattern such that flooding would occur on or off site? e) Create or contribute to runoff water which would exceed existing or planned stormwater system or create polluted runoff? f) Otherwise degrade water quality? g) Relation to flood plain etc.
46 Photo source: Incorporating LID into Facility Design Construction Management Process Project Design/Contracting RFQ/RFP Contract Documents Construction Design Standards Guidelines Post-Construction Operation & Maintenance Make sure your designers and engineers are aware of the new MS4 permit requirements.
47 A Well Designed Project Starts With a Good Design Team Request for Proposal (RFP)- Request for Qualifications (RFQ) Ad for Architectural Services Preliminary Selection Criteria
48 Contract Documents Scope of Services Must meet MS4 post-construction requirements Executive Design Professional Agreement General Requirements Design Professional shall perform all services in compliance with applicable laws, codes, rules, regulations, ordinances, University policies, and Facility standards Exhibits Supplemental Requirements Article 2, 3, 4 Deliverables: Post-Construction Checklist, Calculations, and SMARTS Calculator, Operation and Maintenance Manual
49 Construction Design Standards Required documentation to demonstrate compliance with MS4 post-construction requirements Section F.5.g Calculations for existing, total new and replaced impervious surface area, total new pervious area, and calculation of Net Impervious Area Description of Source Control Measures, Site Design Measures, and Storm Water Treatment/Hydromodification Management Measures including calculations (sizing and flow) Designs for Stormwater Retention or Infiltration SMARTS Post Construction Calculator or equivalent
50 Construction Design Standards Statement of Compliance: Statement that Water Quality Treatment Performance Requirement has been met on-site, or if not achievable document how it has been met off-site Confirm information on campus-specific checklists or templates matches final project design
51 Post-Construction Operation and Maintenance O&M responsibility must be assigned through a legally enforceable agreement or mechanism Permittee must verify that systems and hydromodification controls installed are properly operated and maintained for the life of the project
52 Pictures from LID O&M Training: Operations and Maintenance Verification Program O&M Manual: Specify routine maintenance, such as: Removing accumulated sediment and debris Replacing dead vegetation Vacuuming permeable pavers Design expectations: No standing water after 72 hours Infiltration of storm water from design storm events
53 Essential Resources California Stormwater Quality Association (CASQA) - BMP Handbooks online Annual CASQA conference for AIA credit (mid Sep.) State Water Quality Control Board - Phase II Small MS4 Permit - SMARTS database - Post-Construction Water Balance Calculator
54 Campus Storm Water Specialists Contact Information Campus Contact Name Address Berkeley Aysha Massell David Scrimger Davis Lisa Moretti Irvine Dick Sun Los Angeles Gillian Marks Merced Monica Lurtz Riverside Amanda Grey Tricia Thrasher San Diego Kimberly O'Connell San Francisco Natalie Mendezona Travis Clark Santa Barbara Jodi Woods Santa Cruz Courtney Trask
55 This concludes The American Institute of Architects Continuing Education Systems Program
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