New York State Department of Transportation Storm Water Pollution Prevention Plan (SWPPP)

New York State Department of Transportation Storm Water Pollution Prevention Plan (SWPPP)

P.I.N. Project Title

STORMWATER POLLUTION PREVENTION PLAN (SWPPP)

FOR DOT PROJECTS

month year

P.I.N.

PROJECT TITLE

MUNICIPALITY

COUNTY

Table of Contents

1. Introduction

(1)Scope of the Project

(2)Location of Project (Narrative)

(3)Project Type and Size

(4)Project Description

(5)Cultural Resources

1. Project Maps and Plans

(1)Location Map

(2)Soil Maps

(3)Erosion Control Plans

(4)Existing and Proposed Subcatchment Maps

1. Project Soils

(1)NRCS Soil Map @ project location

(2)Soil Types

(3)Discussion of Soil Characteristics and Soil Erosion Hazard Potential:

1. Construction Phasing

(1)Sequence of Construction Activities

(2)Special Notes Covering Construction Sequence

1. Erosion and Sediment Control Measures

(1)Erosion Control Plan

(2)Applicable Standard Sheets and Special Details

(3)Permanent Erosion and Sediment Control Measures

(4)Installation Sequence

(5)Maintenance Schedule

(6)SWPPP Implementation Responsibilities

1. Existing Watershed Information

(1)Table of Receiving Waterbodies

(2)Existing Watershed(s) Table

1. Green Infrastructure

(1)Reduction of Impervious Cover

(2)Runoff Reduction Techniques

1. Post Construction Stormwater Control Practices

(1)Table of Post Construction Practices

(2)Post Construction Practices Plan

(3)Hydraulic Analysis of Stormwater Control Practices Including Pre-Development and Post-Development Conditions

(4)Maintenance Table of Post-construction Stormwater Control Practices

1. Appendix

(A) Location Map

(B) NRCS Soil Map w/ Area of Disturbance

(C) Erosion & Sediment Control Plans, Details, Notes

(D) Hydrologic Analysis

(E) Miscellaneous Forms

May include, but not limited to, the following:

1. Notice of Intent
2. CONR 5 – SPDES Permit Certification Form
3. CONR 6 – SPDES Design Phase Certification
4. CONR 8 – SWPPP Revision Form
5. MURK 6 – SPDES Stormwater Inspection Report
6. HC 209 – Notice to Disturb Greater Than 5 Acres of Soil
7. HC 210 – Notice to Reduce Frequency of Site Inspections

(F) Cultural Resource Information

1. Introduction

(Boilerplate)

A stormwater management assessment has been conducted for the proposed project in order to protect the waters of the State of New York from the adverse impacts of stormwater runoff. This report presents an analysis of the project in accordance with the New York State Department of Environmental Conservation SPDES General Permit for Stormwater Discharges from Construction Activity Permit No. GP-0-10-001(Double check permit # to be sure it is current)and the New York State Stormwater Management Design Manual. As required, the Stormwater Pollution Prevention Plan is designed, where appropriate, to incorporate green infrastructure techniques that preserve natural resources and utilize the existing hydrology of the site, provide runoff reduction practices, water quality treatment practices, apply volume and peak control practices for channel protection, overbank flood control, and extreme flood control as appropriate.

(Boilerplate, except insert area of disturbance and state whether the project is exempt from any of the post-construction stormwater controls – see HDM Chapter 8, Appendix B for discussion of these exemptions)

In accordance with Appendix B, Table 2 of the SPDES General Permit for Construction Activity, GP-0-10-001, road construction or reconstruction projects that involve a soil disturbance of one or more acres require the preparation of a full SWPPP that includes post-construction stormwater management practices. In total, approximately x.xx acres of soil disturbance is expected during the construction of this project. Therefore, this project requires the development of a full SWPPP, including erosion and sediment controls, green infrastructure site planning techniques, runoff reduction volume practices and post-construction stormwater management practices.

The general contractor and subcontractors performing any activity that involves soil
disturbance will be required to comply with the terms and conditions of the SWPPP for
the project identified as a condition of authorization to discharge stormwater. The
Contractor shall provide signed certifications (Form CONR 5) for itself and all applicable
subcontractors at the preconstruction meeting. These signed certifications shall be
included as part of the SWPPP. The SPDES General Permit and SWPPP must be kept
on file at the NYSDOT Project Field Office.

As required by the conditions described in the SPDES general permit, the SWPPP shall
be kept current and changes made to reflect changes in the design, construction, and
operation or in the maintenance of the project.

The complete set of construction drawings and specifications are provided as separate documents; however, they should be considered an integral component of the SWPPP and are referenced throughout this document.

(Copy from Chapter 1 of the Design Report)

(1)Scope of the Project:The project will address safety and infrastructure problems along this section of Route 9P attributed to the deteriorating condition of the existing bridge.

(Copy from Chapter 1 of the Design Report)

(2)Location of Project:The project extends from a point on the south approach just north of the Stewarts shop on the east side of Route 9P, across the lake to the intersection of Route 9P and Crescent Avenue, approximately 0.85 km to the north. The project straddles the border between the City of Saratoga Springs on the north side of the bridge and the Town of Saratoga on the south side of the bridge. Development patterns on each side of the lake are identical with a patchwork of commercial and residential uses blending together. Refer to the Location Map in Appendix A.

(Check to see if the project falls in either a TMDL watershed or discharges into a 303(d) listed waterbody)

This project is not located within a TMDL watershed and does not discharge into a 303(d) listed water.

Table 1 - Location Table

Approximate Coordinate Position @ Center of Project
Latitude / 73° 43’19”W
Longitude / 43° 3’ 15”N

(Copy from Chapter 1 of the Design Report)

(3)Project Type and Size: The project is expected to progress as aBridge Replacement Project and the project work area is approximately 1.89 acres.

(Copy from Chapter 1 of the Design Report)

(4)Project Description:The proposed transportation project under consideration will address the reconstruction of the bridge carrying NYS Route 9P over the Saratoga Lake outlet, located in the Town of Saratoga and the City of Saratoga Springs in Saratoga County. The project begins on the south approach to the bridge, just north of the Stewarts on the east side of 9P and continues across the span, up the hill, to the intersection of NYS Route 9P and Crescent Avenue. The work consists of reconstruction of the north and south approaches and the bridge itself, construction of closed drainage on both sides of the bridge and expansion of an existing drainage swale on the north side of the bridge to provide water quality treatment for roadway runoff. During construction, traffic will be maintained via an offsite detour. The existing structure will be demolished and a new structure will be constructed at the original location.

(Discussion of Cultural Resource issues and process for the project)

(5)Cultural Resources:National Historic Preservation Act (Section 106 Process/Section 110) - The existing bridge has been identified as a National Register Eligible (NRE) resource. A Cultural Resource Survey (CRS) has been completed and results have been received. The Historic American Engineering Record (HAER)has been completed. New York State has made an effect determination of"adverse effect". A Memorandum of Agreement (MOA) has been completed and approved by New York State Historic Preservation Officer, New York State Department of Transportation and Federal Highway Administration.

Section 4(f) - Since the existing bridge is eligible for the National Register of Historic Places, the requirements of Section 4(f) are applicable. Additionally, Section 4(f) applies to the use of state parkland adjacent to the bridge structure at the Saratoga Lake State Boat Launch. This project satisfies the requirements of FHWA's March 1, 2005 Section 4(f) Policy Paper and qualifies for two Programmatic Section 4(f) Evaluations and Approvals. The FHWA New York Division has reviewed the two Programmatic Section 4(f) Evaluations and this project's Draft Design Report; the FHWA has concurred with the Programmatic 4(f) Evaluations.

Refer tothe Finding Documentation andtheMOA in Appendix F.

1. Project Maps and Plans

(1)Location Map: See Appendix A

(2)Soil Maps:See Appendix B

(3)Erosion and Sediment Control Plans: See Appendix C

(4)Existing and Proposed Subcatchment Maps: See Appendix D

1. Project Soils

(Soil information can be found using ArcMap or the NRCS Web Soil Survey at

(1)NRCS Soil Map: See Appendix B

(2)Soil Types:The following soil types and hydrologic groupsare present within the projectarea of disturbance:

Table 2 – Soil Type

Soil Symbol, Name, % Slope Range / Hydrologic Group (HSG) / Texture / Character / Erosion Hazard
Potential / % within
disturbed area
DeA, Deerfield complex, 3 to 8 percent slopes / B / Loamy fine sand / Moderately well drained / *Slight / 27.5%
Ud, Udipsamments, dredged / A / Loamy sand or sand / Excessively drained / *Slight to moderate / 53.3%
WnB, Windsor Complex, 3 to 8 percent slopes / A / Loamy sand / Excessively drained / *Slight / 12.1%
WnD, Windsor Complex, 15 to 25 percent slopes / A / Loamy sand / Excessively drained / *Severe / 7.1%

(3)Discussion of Soil Characteristics and Soil Erosion Hazard Potential:There are three different soil series andtwo different hydrologic soil groups within the area of disturbance (AOD).The largest soil series within the project area is theUdipsammentssoil, which is made up of material dredged from Saratoga Lake. It is typically loamy sand or sand with layers of silty material or gravel at varying depths. Depth to bedrock is greater than 60 inches and depth to seasonal groundwater is more than 6 feet. The Deerfield complex (DeA) makes up the next largest portion of the area of disturbance. It is a loamy fine sand formed on glacial outwash plains and terraces. It is very deep, moderately well drained and the topography within this series is generally undulating. Depth to bedrock is greater than 60 inches and depth to water table is between 1.5 and 3 feet. The Windsor complex contains the remaining two soil types, WnB and WnD with the first characterized by undulating terrain and the second hilly terrain. Both subseries are loamy sand, excessively drained and formed on glacial outwash plains, kames and terraces. Depth to bedrock is greater than 60 inches and depth to seasonal groundwater is more than 6 feet.

*(The erosion hazard indicated in the table above was originally a consideration for the forestry industry, and indicates the susceptibility of a particular soil to erode in a fully exposed condition. The Department is utilizing this information to indicate areas of the project which may be of critical concern to the contractor during storm events).

1. Construction Phasing

(Consult project designers and construction staff to determine expected construction sequence)

(1)Sequence of Construction Activities:The Contractor is required by the NYSDOT to submit to the Engineer for approval, a construction/progress schedule showing the order in which the Contractor proposes to carry on the work, the date on which the work on the project will start, the major items of work (earth work, excavation, mobilization, soil erosion control measures, highway reconstruction etc.), the critical features and the completed dates for completing each task.

The Contractor’s work schedule and methods shall be consistent with the SWPPP or amended SWPPP. Once approved, the progress schedule shall become a part of the SWPPP.

The following list is a suggestedsequence of major construction activities for the project to meet the NYSDEC Phase II erosion control requirements:

1. Install erosion control measures at the beginning of construction.

1. Temporarily relocate Verizon and National Grid lines from the existing bridge to the lake bottom out of the way of construction operations. Permanently relocate the Saratoga County Sewer District’s force main from the existing bridge to the proposed location below the lake bottom.Remove existing underwater national grid electrical line from the lake bottom.

1. Prepare the existing boat launch parking area for temporary storage use.

1. Install temporary sheeting bulkheads in preparation for access from Route 9P to the lake. Set up construction barges and cranes as needed for demo of existing bridge and construction of new bridge.

1. Install permanent sheet piling at the existing boat launch dock. Clear and grub/remove trees from the existing approach embankments and build SPDES treatments, drainage, and sidewalks on the west side of the north approach. Install and maintain erosion control measures as needed.

1. After Labor Day holiday (September 6, 2010) implement detour route and close and demolish existing bridge superstructure and sub-structure. Bridge shall not be closed prior to September 7, 2010.

1. After bridge demo, install proposed piles and pier caps. Complete bridge abutments andmiscellaneous sub-structure concrete work and closure pours as needed, temperature allowing.

1. Construct bridge approaches including precast modular wall units, all under drain and closed drainage, sidewalk/shoulder widening and utility conduits as needed.

1. Set steel beams and construct superstructure during winter time. Relocate utilities from their temporary location onto the new structure. Prepare for spring time deck and approach slab pours.

1. Pour concrete deck, approach and sidewalks and complete guide railing and any othermiscellaneous approach work.

1. Complete sign installations and pavement markings prior to opening new bridge to traffic. New bridge shall be opened prior to May 27, 2011 for Memorial Day weekend.

1. Open bridge to traffic, remove temporary detour and complete landscaping.

1. When vegetation is established, remove silt fence and any other temporary erosion control measures that remain and clean out any sedimentation in the drainage pipes and swales. Reseed/repair any areas damaged during these activities.

1. Erosion and Sediment Control Measures

(Boilerplate)

(1)Erosion Control Plan:An erosion control plan has been developed in accordance with the Department’s technical standards which are contained in the “New York Standards and Specifications for Erosion and Sediment Control”. The erosion control plan limits the amount of area exposed prior to stabilization, diverts drainage runoff from adjacent areas away from and around the construction site area, and employs various sediment control methods such as silt fence, vegetation protection barrier, check dams and turbidity curtains.

All temporary erosion and sediment controls will be inspected and maintained in accordance with Section 209 of NYSDOT's 2008 Standard Specification and all addendums.

Locations of off-site material, waste, borrow or equipment storage have not been determined during the design phase of the project. The following sections, but not limited to these sections, of the Department’s Standard Specifications address provisions for locations of off-site material, waste, borrow or equipment storage: Sections 107-08, 107-10, and 107-11.Erosion and sediment controls will be utilized as necessary for any incidental disturbances that may result from construction activities.

Construction and waste materials expected to be stored on-site consists of materials and equipment typically used to construct highways. Materials generally consist of soil, stone, guiderails, sign materials, drainage pipes, and concrete drainage structures. Equipment generally consists of heavy earth moving, paving and pavement striping equipment. The following sections, but not limited to these sections, of the Department’s Standard Specifications address provisions for construction and waste materials expected to be stored on site: Sections 104-07, and 107-12. The project's General Soil Erosion and Sediment Control Notes address provisions for construction and waste materials expected to be stored on site and additional temporary disturbances associated with the contractor’s staging and spoil areas will not result in any change to the design or function of any permanent practices described in this report.

(Briefly describe all erosion control measures to be used)

Temporary Surface Stabilization:Areas within the project limits that may be disturbed more than once during the construction activities will be stabilized using temporary seed and mulch item or as directed by the Engineer. Area’s remaining unpaved for more than five (5) days during construction operations shall be stabilized temporarily. Other areas that might need to be stabilized temporarily will be at the discretion of the Engineer.

Check Dams:Check Dams will be installed in ditches/channels at various locations marked on the plans. The check dams in this project serve two functions: 1) Reduce erosion and limit sediment transport in a channel by reducing flow velocity in the channel and 2) Provide water quality treatment for roadway runoff. Proper inspection and maintenance of the check dams will be performed as specified.

Drainage Pipe Inlet/Outlet Stabilization:As part of the permanent erosion control measure, the inlet and outlet of the culvert pipes will be provided with either stone riprap apron or an apron consisting of erosion control product with vegetation to provide the required erosion control which blends in with the surrounding natural features and topography. The location and type of stabilization to be provided is shown on project plans.

Construction Entrance:If required, a stabilized construction entrance will be constructed to access the Contractors Staging/Storage Area. This entrance/area shall conform to the NYSDOT’s Standard Specifications and Standard Sheets.

Surface Stabilization:Stabilizing of the graded surfaces will be accomplished by using various seed mix for vegetation. The item for this work shall be progressed under Item 610.0203, Establishing Turf.

Dust Control:The contractor will be required to minimize dust generation during the construction activities. Provisions such as watering, the use of cover materials, and the application of calcium chloride have proven effective in dust control and can be approved by the Engineer for use in the affected areas.

Turbidity Curtain:Turbidity curtains will be placed as shown in the contract plans or as directed by the Engineer. The turbidity curtain shall be installed to meet the current water level conditions. The protection measure will remain in place during construction of the substructures and demolition of the existing bridge.