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Blueprint for One of the Nation’s Largest SCM Maintenance Programs PA Department of Transportation
Agenda
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PennDOT Facts
• Nation’s fifth largest state maintained roadway network with 88,000+ lane miles (12’ equiv.)
• 25,000+ bridges • 120,000+ storm drain pipes • 450 stockpiles • Estimated 3,000+ SCMs*
*Includes vegetated swales
– Central Office develops overall policies – District offices provide oversight and ensure
employees are trained and have resources – County maintenance executes operations
Central Office
Regulatory Drivers
• 2010 changes to 25 Pa Code §102 – 102.8(m) – PCSM long-term operation and
maintenance requirements – All permits issued after dates below must contain a
PCSM plan w/ O&M instructions • Individual Permits after 11/2010
• General Permits (PAG-02) after 12/2012
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Regulatory Drivers
• PennDOT’s Individual Statewide MS4 Permit – Applies to urbanized areas – “Ensure that NPDES PCSM BMPs are implemented,
operated, and maintained consistent with applicable Chapter 102 regulations.”
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Current Practices
• 1 in 4 DOTs have a complete SCM inventory and inspection/maintenance plan
• For most DOTs, maintenance is performed on an as-needed basis for common indicators
• Typical practices: – removing excess sediment – revegetating ditches and
embankments – trash removal – emergency response when
impaired conveyance threatens roadway safety
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What about functionality and performance?
• Requires knowledge of the SCM’s purpose and various functional elements
• Training is essential
Where are all of the SCMs (and what are they)?
• Information rich, data poor • SCM data mostly only existed on PCSM plans • Data not centralized
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SCM Inventory
• Phase 1 – Desktop Review – Began with projects permitting circa 2006 and later – 500+ projects w/NPDES permits reviewed or
currently under review for SCMs
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• Phase 2 – Field Reconnaissance – Additional plan/data mining (add vegetated swales) – GPS locating and information gathering
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• Data collected for each SCM: – SCM type – Lat./Long. – District/County/Municipality – SR/Segment/Offset – Receiving water data – Urbanized/non-urbanized – NPDES permit data – Year constructed – ECMS number – Surface area, DA treated, IA treated – Access type/visibility
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SCM Inventory
• 1,650 SCMs have been inventoried to date – Does not include vegetated swales because
substantial additional effort – Does not include other certain types of non-
structural or restoration BMPs
• Estimated 3,000 existing SCMs in total – Includes vegetated swales and SCMs that have not
yet been geo-located
SCM Inventory
SCM Inventory
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100
200
300
400
500
600
1 2 3 4 5 6 8 9 10 11 12
SCM Totals by District and Location
SCM Totals- Urban Areas SCM Totals- Non-Urban Areas
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Wet Basin
Basin - Other
accordance with each PCSM Plan • Standardized practices needed
– inspections – maintenance – documentation
• Adding roughly 170+ SCMs per year to the inventory*
*Not including vegetated swales and restoration BMPs
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protocol – Regular maintenance cycles – Consistent documentation – Inventory procedure – Training!
• Long-term Plan – Improve efficiency – Expand data tracking – Analyze data to improve
practices
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• Condition assessment – Establishes a baseline condition and uncovers any
issues that may result in reduced effectiveness or failure of the SCM
• Visual screening – Detects existing/potential problems and their
source to determine if corrective maintenance is needed and/or if further investigation is required
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• Routine preventative maintenance
– Needs to be performed on regular cycles and can be scheduled far in advance of the work.
• Corrective maintenance – Needs are uncovered
through visual screenings, condition assessments, and preventative maintenance activities.
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Technology Implementation
• Maintenance IQ – Visualization of database and links to documents – Accessible to all w/CWOPA account – No GIS licensing – Maintenance personnel using for other applications
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data upload – Electronic payroll entry
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Questions?
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Blueprint for One of the Nation’s Largest SCM Maintenance Programs
Agenda