Asset Management Stormwater Management Facilities and Wetlands

Transcription

1 Maryland Department of Transportation State Highway Administration Asset Management Stormwater Management Facilities and Wetlands Sonal Sanghavi, P.E. Acting Director, Office of Environmental Design July

2 Presentation Outline Environmental Management Programs - Stormwater Management Facilities - Wetlands What does Asset Management mean in context of Stormwater and Wetlands? Integration of Asset Management into other disciplines Environment and Maintenance

3 Asset Management Primary Objectives Identify and track assets throughout their lifecycles Identify - what assets do we own Locate - where are these assets Inspect - what condition are they in Maintain have more planned less unplanned maintenance Remediate - have a rational long-term plan for retrofits, upgrades and replacements Manage - technical and financial commitment to long-term performance & improvement

4 Asset Management Building the Foundation Inventory Condition Assessment Maintenance Remediation Work Plan Budget $ System Updates Cyclical Inspections & GIS Updates Condition Monitoring

5 Stormwater Management Facilities Program To maintain and enhance performance, safety and aesthetics To comply with NPDES permit requirements: - Identify and Inspect SWM Facilities - Perform routine maintenance within 1 year - Identify and perform required repair work - Re-inspect each facility at least once every 3 years To meet SHA Business Goal: - By the year % of SHA SWM facilities will be functionally adequate

6 Stormwater Management Facilities Program Steps Towards meeting our Objectives: Inventory and Condition Assessment - Data Collection/Storage Tools - GPS, Geodatabase, digital data collection using hand held computers, field/office editing tool - Performance based rating Data Analysis and Decision Making - Response based rating - Maintenance Categorization - Minor, Major, Retrofit - Data Analysis Tools - Web-based facility Viewer - Maintenance and Construction Performance Tracking - Business Plan Goal Innovative Management Approach - Design, Build, Maintain and Operate (DBOM)

7 Inventory and Condition Assessment Build a preliminary database based on existing records Conduct field verification/addition and inspections Develop a digital inventory Build a comprehensive GIS model of drainage systems Assign performance based rating

8 Condition Assessment Two-tier Rating System Performance-based Rating structural integrity functionality 40 inspection parameters rated on a scale of 1 to 5 Overall inspection rating assigned for each facility A-E Response-based Rating priority for maintenance and remediation I - VI

9 SHA Response Rating I II III IV V VI No Response Required schedule for multi-year inspection Minor Maintenance perform as necessary to sustain facility performance. Major Maintenance or Repair is needed to return the site to original functionality within the existing footprint of the facility. Structural defects require repair and/or restoration Retrofit Design is required on-site or at another location, if facility cannot be returned to its original functionality within its existing footprint Immediate Response is mandatory to address any public safety hazards regardless of the functionality of the facility Abandonment of the facility when the facility is not maintainable and will not provide sufficient benefits if retrofitted due to the lack of access for construction and maintenance, limited space or minimum impervious area treated

10 Data Analysis and Decision Making Review inspection data for site conditions, performance Prioritize facilities into categories: Maintenance, Repair, & Remediation Evaluate data for resource management and decision-making Assign response based rating

11 I No action required

12 II Routine Maintenance Trash & debris Vegetation

13 III Major Maintenance Erosion Vegetation Ponding Access

14 SWM Facilities Maintenance Work Order Template SWM facility inventory information Performance inspection comments Inspection Rating Summary SHA Action Rating Recommended maintenance action list Marked up SWM As-Built Plans and Photographs

15 IV Retrofits Embankment Failure Treatment Failure Failed Infiltration

16 Retrofit Design and Construction Converting an existing failed facility into a different type of facility

17 Tracking and Performance Measurement SHA Business Plan Goal By 2010, maintain functional adequacy of Storm Water facilities at 90% % % % % Retrofit Design / Functional Enhancement Major Maintenance Repair Number of SWM Facilities % % % 63 6% % % % % % % % % % % % 95 6% % Functioning as Designed Year

18 Innovative Management Approach Stormwater Management DBOM - Design, Build, Operate, Maintain Engineer and Construction Contractor Team Pilot Contract to Determine Effectiveness of DBOM (1 County ~ 100 facilities) Achieve 100% of Facilities Functioning as Designed Establish Routine Maintenance Activities to Reduce Need for Retrofits 3-Year Program, all facilities brought to functioning level in 3 years

19 Wetlands/Stream Mitigation Monitoring Program To monitor and maintain wetland and stream mitigation/stewardship sites to ensure longterm success To comply with Federal and State permit requirements: - Mitigate for wetland/waterways impacts due to highway construction - Perform extensive monitoring for 5 years - Identify and perform required repair work - Report and Re-inspect annually To meet SHA Business Goals: - Environmental Compliance - Ensure 100% permit compliance on every project by mitigation of required wetland and waters impacts - Environmental Stewardship - By 2011, create 200 acres of wetlands and 5 miles of stream restoration

20 Wetland Mitigation Monitoring System (WMMS) Web-based application to track, manage and store wetland and stream mitigation sites monitoring data in a centralized system Accessed by Regulatory Agencies, SHA and our consultants Central Repository for all monitored sites and potential mitigation sites at watershed level

21 WMMS Map Server Easy Access to Data Graphical zoom to Site aerial views Information Panel Selected Site Documents Site Findings Photos Permits Multiple users Allows consultants the ability to submit data/reports Allows regulatory agencies to view data and details Features built in QA/QC and publishing options notification when new documents are available Customized Queries and Data Views Centralized system Faster Turnaround for custom reports Development and Maintenance Cost Cost is reduced through the use of the Virtual Earth service No need to maintain vast aerial coverage data of the state

22 Summary Management of green assets is integral in taking a watershed approach and meeting progressively stringent environmental regulations Builds trust with the regulatory agencies through demonstrated successes Improved and streamlined processes through pilots projects and lessons learned Team of Experts - areas of GIS, Database Management, Stormwater Management / Wetland Design, Environmental Regulations Need substantial resources financial and human Full support and commitment from SHA Senior Management

23 In Closing Managing our assets to improve Maryland s Environment

24 BLANK SLIDE

25 Slides for extended discussions on Watershed Approach

26 Conventional Approach to Stormwater Management Focused on Point of Discharge point where stormwater leaves the property lines Treat and manage stormwater generated within the rights-of-way Stormwater Management provided to meet regulatory requirements Water Quantity Management Water Quality Management Groundwater Recharge Regulatory requirements consider watershed needs, but do not proactively address them Typically provided using conventional stormwater practices such as ponds, infiltration practices, etc.

27 Conventional Approach to Wetlands/Waterways Clean Water Act Sections 401, 402 and 404 are not streamlined, though the intent is to protect the water resources and ecosystem Avoidance, minimization and mitigation processes focused on direct impacts Mitigation is typically in-kind not necessarily the best result for the ecosystem

28 Conventional Approach Addresses roadway needs, but not necessarily watershed needs Advantages: Provides regulatory protection Use of standard design practices More control on time and costs Disadvantages: Does not help towards watershed recovery Mitigation may not address watershed impairments Mitigation may not be sustainable, more expensive in the long run Not practical in addressing the expected TMDL requirements We need to look beyond just our roadway and rights-of-way.

29 Green Highways: Watershed Approach Is a concept that recognizes that highways coexist with other land uses in watersheds, and a collaborative approach provides an opportunity for highway agencies to plan and deliver the most cost-effective protection, even improvement, to watersheds

30 Green Highways: Watershed Approach Principles 1. Deliver transportation projects and address watershed-wide needs 2. Benefit multiple stakeholders such as highway agencies and environmental protection agencies to achieve better than before 3. Flexible approaches to implement and meet the desired goals of regulatory programs 4. Cost effective approaches to derive watershed benefits 5. Promote integrated water and habitat resource protection (i.e. Storm Water and Watershed plans) 6. Use collaboration and partnerships to deliver watershed improvements

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32 Bladensburg Northwest Branch Wetland / Stream Project sites