Supervisor, RIDEM RIPDES Permitting Program

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Presentation transcript:

Supervisor, RIDEM RIPDES Permitting Program Clear, Consistent, & Predictable Rules Unifying State and Local Soil Erosion and Sediment Control Standards for Better Outcomes Eric Beck, P.E. Supervisor, RIDEM RIPDES Permitting Program The Goal: Improve the implementation of SESC in State and Local permitting. Performance Criteria will ultimately apply to all construction sites in Rhode Island. The Result: Consistent and Clear SESC Plan Requirements. Streamlined applications, No duplication of effort, Shared responsibility for compliance and enforcement, Training for plan reviewers and inspectors (3rd party certifications – licensing)

Who Should Use the Handbook? Designers Municipal Officials Property Owners Regulatory Reviewers

Enabling Legislation for State Regulations and Local Ordinances Rhode Island General Law, Section 45, Chapter 61.2, entitled “The Smart Development for a Cleaner Bay Act of 2007” required DEM and CRMC to amend the 1993 Stormwater Design and Installation Standards Manual. *RIGL 45-61.2-2(b) passed in the 2012 allows communities to adopt the stormwater manual as local requirements:  ordinances may require compliance with the Rhode Island Stormwater Design and Installation Standards Manual for any development, redevelopment, or land disturbance. In accordance with the RIPDES MS4 General Permit , Ms4s have adopted a local ordinances that references the RISDISM and RI SESC Handbook(as amended)

The Stormwater Manual Established Eleven (11) Stormwater Management Design Standards 1. LID Site Planning and Design 2. Groundwater Recharge 3. Water Quality 4. Conveyance and Channel Protection 5. Overbank Protection 6. Redevelopment Projects 7. Pollution Prevention 8. LUHPPLs 9. Illicit Discharges 10. Construction Activity Soil Erosion, Runoff, Sedimentation, and Pollution Prevention Control Measure Requirements 11. Operation and Maintenance

Stormwater Management Plan Stormwater Site Planning, Analysis, and Design (SW Manual) Post Construction Operation and Maintenance (SW Manual) Soil Erosion, Runoff, and Sediment Control (SW Manual Standard 10, & RISESC Handbook Part D)

Stormwater Management Plan Stormwater Site Planning, Analysis, and Design (SW Manual) Post Construction Operation and Maintenance (SW Manual) Soil Erosion, Runoff, and Sediment Control (SW Manual Standard 10, & RISESC Handbook Part D)

Soil Erosion and Sediment Control Performance Criteria Are Now Aligned Part D – SESC Plans Minimum Standard 10 - SESC Minimum Standard 10 of the RISDISM is being revised to be consistent with the Performance Criteria established for Soil Erosion and Sedimentation Control Measures contained in the 2013 RIPDES Construction GP and the 2014 RI SESC Handbook. In August of 2014 the Rhode Island State Conservation Committee (RISCC) adopted the new RI SESC Handbook. The RISCC established a Technical Review Committee that met from 2012 to 2014 and implemented a Peer Review process to develop the updates.The updates included the incorporation of Performance Criteria for SESC Measures that were consistent with the EPA C&D Rule and the RIPDES Construction GP (Part D). The updated Handbook was made available for a 60-day public review and comment period (March – May 2014) and a Public Workshop was held in April of 2014.

Senior Sanitary Engineer RIDEM RIPDES Permitting Program Soil Erosion and Sediment Control Plan Performance Criteria Brian Lafaille, P.E. Senior Sanitary Engineer RIDEM RIPDES Permitting Program

Control Room of UB-110 German Submarine (1918)

Soil Erosion and Sediment Control Plan

Soil Erosion and Sediment Control Plan Format Narrative (Written Document) Site Plans ( Construction Drawings)

Soil Erosion and Sediment Control Performance Criteria Avoid and Protect Sensitive Areas and Natural Features Minimize Area of Disturbance Minimize the Disturbance of Steep Slopes Preserve Topsoil Stabilize Soils Protect Storm Drain Inlets Protect Storm Drain Outlets Establish Temporary Controls for the Protection of Post-Construction Stormwater Treatment Practices Establish Perimeter Controls and Sediment Barriers Divert or Manage Run-on from Up-gradient Areas Properly Design Construction Stormwater Conveyance Channels Retain Sediment Onsite Control Temporary Increases in Stormwater Velocity, Volume, and Peak Flows Construction Activity Pollution Prevention Control Measures Control Measure Installation, Inspections, Maintenance, and Corrective Actions

Avoid and Protect Sensitive Areas and Natural Features Example signage and fencing protecting wetland buffers and forest. Source: RI LID Site Planning and Design Guidance Manual

Minimize Area of Disturbance ~ 20 ft

Minimize Disturbance of Steep Slopes

Preserve Topsoil 4 -

Stabilize Soils

Protect Storm Drain Inlets

Protect Storm Drain Outlets

Establish Temporary Controls for the Protection of Post-Construction Stormwater Treatment Practices

Establish Perimeter Controls and Sediment Barriers

Divert or Manage Run-on from Up-gradient Areas Source: USEPA-833-R-06-004 May 2007

Properly Design Construction Stormwater Conveyance Channels Temporary Conveyance Channels must be designed to handle the 10 Year, 24 Hour Type III Design Storm

Retain Sediment Onsite Temporary Sediment Trap Temporary Sediment Basin Sediment Traps are Mandatory for Common Drainage Locations Where 1-5 Acres of Land Will Be Disturbed Sediment Basins are Mandatory for Common Drainage Locations Where >5 Acres of Land Will Be Disturbed

Control Temporary Increases in Stormwater Velocity, Volume, and Peak Flows Goal: Protect Downstream Receiving Waters, Conveyances, and Drainage Systems During Construction. In most cases the combination of all other performance criteria will be adequate. SESC Plan Preparer must evaluate the need for additional velocity, peak, and volume controls. Goal: protect downstream receiving waters, Protect receiving conveyances and drainage systems Part D.C.3. – “In most cases the combination of measures will be adequate to control temporary increases in velocities, volumes and peak flows.” examples of when it wouldn’t apply?? Designers responsibility to evaluate if additional velocity, peak and volume controls are necessary For any area >5 acres disturbed at one time the reviewing authority may require additional peak controls. Construction Sequencing, Phasing, Maintaining existing Vegetation, Re-establishing Vegetation Designer must evaluate if the 10 yr storm (10 hour residence) is adequate or larger storms must be controlled.

Construction Activity Pollution Prevention Control Measures

Control Measure Installation, Inspections, Maintenance, and Corrective Actions

Questions?