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KPDES Stormwater Permit for Highway Construction
 

KPDES Stormwater Permit for Highway Construction

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  • Environmental Stormwater Program Quarterly Management Meeting July 10, 2006

KPDES Stormwater Permit for Highway Construction KPDES Stormwater Permit for Highway Construction Presentation Transcript

  • KPDES Role of the Design Engineer Experiences from the Field 2008 Standard Specifications The future – KYG50 permit EPA Perspectives ACEC-KY FHWA KYTC August 2008 Partnering Conference
  • Experiences from the Field
    • Project had a CAP requirement that called for protection of sensitive waters
    • Managed a project against the odds to protect “the Blind Cave Shrimp” an endangered species
    District 3 - KY 259 Edmonson County
    • Challenges …
    • 30 + inches of rain
    • Highly erodeable Soils
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  • KPDES BMP Plan Template
    • Implement the requirements of Permit KYR10 for all projects that disturb One or more acre of ground.
    • Items marked (1) are to be completed by project manager/design engineer
    • After letting, District and Contractor complete items marked (2) and (3) and NOI
  • Page 3 - Items marked (1) 7. a general statement about the existing soil cover and erodability of the soils.
    • The place in the BMP Plan to enumerate the soil conditions in relation to erosion and sediment controls.
  • Page 3 - Items marked (1)
    • Project managers are expected to see that streams that require extra protection are identified.
    9. and 10. TMDL review – look for ORW streams or 303(d) listed streams
  • Page 3 - Items marked (1) 9. and 10. TMDL review – look for ORW streams or 303(d) listed streams
    • Extra provisions for erosion and sediment control
  • Environmental GIS Viewer http://kytcgis.ky.gov/enviro/viewer.htm
  • Results ………. Sensitive Water
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  • Reasonable quantities of each probable erosion and/or silt control feature, methods or practice for bid purposes.
  • Plan Quantities Accuracy is Important for Permanent Seed and Protect UNIT QUANTITY ITEM DESCRIPTION CODE EACH Three times per construction season per trap CLEAN SILT TRAP TYPE “B” 2707 SQ. YD. Square yards as recommended by the Project Team TEMPORARY SEEDING AND PROTECTION 5953 TON Tons of 20-10-10 fertilizer to cover the entire seeded and protected area at the rate of 11.5 lbs per 1000 sq. ft. TOP DRESSING FERTILIZER 5966 SQ. YD. Square yards as recommended by the Project Team SPECIAL SEEDING CROWN FETCH 5989 SQ. YD. Square yards to cover entire disturbed area. (minus the stabilized area) SEEDING AND PROTECTION 5985 SQ. YD. Square yards for site specific solutions. SODDING 5990 SQ. YD. Square yards to line permanent ditches plus areas recommended by the Project Team EROSION CONTROL BLANKET 5950 LIN. FT. Linear feet equal to one half length of project. TEMPORARY DITCH 2159 LIN. FT. Once CLEAN TEMPORARY SILT FENCE 2709 LIN. FT. Linear feet equal to one half length of project. TEMPORARY SILT FENCE 2701 CU. YD. Once CLEAN SEDIMENTATION BASIN 2712 CU. YD. Sufficient cubic yards for site specific solutions if appropriate. SEDIMANTATION BASIN 2711 EACH Three times per construction season per trap CLEAN SILT TRAP TYPE “C” 20497NS843 EACH One per acre disturbed (rural) Three per acre disturbed (urban) SILT TRAP TYPE “C” 20496NS843 EACH Two per acre disturbed SILT TRAP TYPE “B” 2704 EACH Three times per construction season per trap CLEAN SILT TRAP TYPE “A” 2706 EACH Two per acre disturbed SILT TRAP TYPE “A” 2703 SQ. YD. Square Yards to cover the entire disturbed area once. TEMPORARY MULCH 5952
  • The reason for developing an ECP is to provide information and/or Site Specific Solutions which the Contractor and the Resident Engineer can use to develop and maintain a BMP Plan which will comply with the KPDES permit.
  • 2008 Standard Specifications
    • Apply to all contracts awarded after Jan 1, 2008
    • Topsoil – unless it is addressed in the contract, it probably won’t be saved or used.
    • Consider temporary easements to stockpile topsoil.
    • 3 seed mixtures are applied based on region of the state and mow vs. no-mow zones.
    • Plan Quantities for payment are used unless there is a 10 % deviation from reality
  • 2008 Standard Specifications
    • Require contractor to have a KEPSC qualified inspector
    • Protecting streams
    • BMPs in place before opening new areas
  • Inspection Notebook
    • Developed after our EPA 309 Letter
    • Moved the Five Day letter into the inspection process
    • Example from KY 259
    • These notebooks start with the Design Engineer
    • Residents and Contractors document using references to the plan documents through DWRs and pay estimates
  • Trends in EPSC Management
    • KYTC is increasingly engaging the contractor in taking responsibility for KPDES compliance
    • Design Build contractor holds the permit
    • KEPSC inspectors are being required
    • The national trend is to increasingly place the responsibility for NPDES compliance on the contractor
    • Standard specifications apply including the ability to charge liquidated damages
  • WWW.KEPSC.ORG
  • KPDES Permit, Where are we ?
    • KYR10 permit is expired.
    • Sept 15, 2008 - there is a chance the permits to replace KYR10 will be public noticed.
    • KYTC will manage construction that it controls under the KYG50 permit.
    • Permits managed under the KYG50 will not have to be filed with the Division of Water to obtain coverage.
    • KYTC will send DOW reports on permit activity
  • KYG50 Permit - Expired
    • Covers highway maintenance lots
    • Primarily for:
      • De-icing material management
      • Suspended solids
      • Oil and grease
    • Employs BMP Plans for facilities
    • Environmental Handbook
  • KYG50 Permit
    • This permit will be modified to include highway construction
    • Earth disturbing highway maintenance will be covered by Fact Sheets
    • Project specific permit coverage will not be required for maintenance activities
  • USEPA Perspectives - Stormwater Discharges during Construction
    • EPA is developing Effluent Limitations Guidelines as a regulation
    • Watch www.epa.gov/waterscience
    • http://cfpub.epa.gov/npdes/stormwater/cgp.cfm
  • USEPA Perspectives - Stormwater Discharges during Construction
    • Seven days notice
    • US Fish & Wildlife Service Review
    • NOI Preparer information
    • Education of employees and subcontractors
    • Maintenance - 50 % then clean out BMPs
    • Increased emphasis on stabilization and documenting progress of construction
  • USEPA Perspectives - Stormwater Discharges during Construction
    • Clarified documentation regarding Endangered Species Act compliance
    • Added documentation requirements when discharges enter TMDL streams.
    • Inspection options added to be either weekly or every two weeks + after ½ inch storms
    • The time of rest in grading has been reduced to 14 days. (KYR10 had 21 days)
  • USEPA Perspectives - Stormwater Discharges during Construction
    • Areas with 10 or more disturbed acreage, design to store the runoff volume from a 2 yr, 24 hr storm or use 3,600 cu ft storage volume per acre disturbed.
    • When one large basin can not be provided, smaller devices with equivalent volume is to be employed.
  • USEPA Perspectives - Stormwater Discharges during Construction
    • “Inspections must be performed by qualified personnel; either the operators own personnel or consultants hired to perform the inspections. The inspectors must be knowledgeable and possess the skills to assess conditions at the construction site that could impact stormwater quality and assess the effectiveness of sedimentation and erosion control measure chosen to control the quality of sites stormwater discharges.”
  • USEPA Perspectives - Stormwater Discharges during Construction
    • NOT is to be filed within 30 days of stabilization.
    • Records retention is three years after NOT is filed.
  • What to watch for ….
    • KYG50 permit re-issuance
    • “ Plan of Common Development”
    • Lexington MS4 permit
    • KYR10 permit re-issuance
      • Will apply to any work that KYTC does not “control”
    • Public Notice e-mail [email_address]
  • Aunt EP heli A Now, Just what have they been doing in Kentucky ???
  • Discussion