Bridge_#2001_Erosion_and_Sediment_Control_Plan.pdf

ESC PLAN TEMPLATE – INSTRUCTIONS

An ESC Plan is required on all projects when trenching is expected to exceed 50 feet or land disturbing activity is expected to exceed

600 square feet. To help plan preparers develop the narrative section of their site-specific ESC Plan, ACHD has created this ESC Plan template.

Instructions are provided for each section of this template. The plan preparer should read the instructions for each section before completing that section. Some sections may require only a brief description while others may require more explanation. Space is provided where additional information may be needed.

Title Page

- Insert project information including project name and location.

- Insert contractor/operator information including company name, mailing address, email address, and phone number.

- Insert date the ESC Plan was completed.

- Insert the estimated project start and end dates.

1 Introduction

- Insert the name of project.

- Insert the project street address (or nearest crossroads) and latitude and longitude.

TIP: Use Google Earth or a similar application to find latitude and longitude.

2 Contacts

- Insert the relevant contact information for the plan preparer, contractor/permit holder, sub-contractor(s), and RP.

- The listed RP must sign and acknowledge his or her responsibilities.

3 Scope of Work

- Insert a detailed description of the proposed construction activities.

- Insert project trenching and total disturbed area values. Include units such as ft., yds., miles, ft.2, yds.2, acres.

- Insert the sequence of events. The sequence of events must include the installation of temporary BMPs, Final Stabilization, and removal of temporary BMPs.

- Insert a list of material and potential pollutants stored on site or associated with the construction activities. The list must include petroleum/oil and sediment.

- Select if dewatering is anticipated. If dewatering is anticipated, include a Dewatering Plan with your submission. Contact

ACHD for more specific information on dewatering permitting requirements.

4 Site Assessment

- Insert a detailed description of the site.

- Select if your site has any environmentally sensitive site features.

- Insert a list of receiving waters. If no surface waters are in or adjacent to the site, assume the next closest surface water receives runoff through the storm drain system.

5 Best Management Practices

- List and describe all BMPs that are applicable on your project.

TIP: Some BMPs are applicable on all projects.

6 Inspections

- Select your site inspection frequency.

7 End of Project

8 Additional Information

- Use this space to provide any additional relevant information that may not have fit in another section.

NOTE: An ESC Plan Map/Drawing must be included with your ESC Plan submittal.

ESC Plan Map/Drawing

- Attach an ESC Plan Map/Drawing that includes the following:

▪ North Arrow, Scale, Date, and Key

▪ Property Boundaries and Lot Lines

▪ Site Drainage Pattern (e.g., topo lines or direction of flow)

▪ All Drainage Features (e.g., surface waters and storm drain inlets).

▪ Existing and Proposed Conditions

▪ Location of BMPs

▪ Material Storage and Staging Areas

TIP: Use ACHD’s Storm Drain Inlet Mapping Tool to locate inlets in and around the project area.

REVISED: JAN 2024

https://earth.google.com/web/ http://achd.maps.arcgis.com/apps/webappviewer/index.html?id=0aa46ef8164f4f0b8de46cee9aadc6b5

EROSION & SEDIMENT CONTROL

(ESC) PLAN

PROJECT

OPERATOR / PERMIT HOLDER

DATE PLAN PREPARED

ESTIMATED PROJECT DATES

Start Date: ___________________

Completion Date: ___________________

WARNING: This ESC Plan Template should only be used for projects permitted through the Ada County Highway District (ACHD). This plan does not meet Federal/State SWPPP

Requirements. Please use the EPA SWPPP Template for projects >1 acre and meeting the eligibility requirements outlined in the most current Construction General Permit.

Bridge #2001 Munger Road Over Middleton Canal

1/31/2025

10/1/2026

3/1/2027

EROSION & SEDIMENT CONTROL PLAN i

TABLE OF CONTENTS

1 Introduction

1.1 Project Name

1.2 Project Location

2 Contacts

2.1 Plan Preparer

2.2 Operator/Permit Holder

2.3 Sub-contractors

2.4 Responsible Person

3 Scope of Work

3.1 Description of Work

3.2 Land Disturbing Activity

3.3 Sequence of Activites

3.4 Materials & Potential Pollutants

3.5 Dewatering

4 Site Assessment

4.1 Site Description

4.2 Site Features

4.3 Receiving Waters

5 Best Management Practices

5.1 Erosion & Sediment Controls

5.2 Material Handling, Storage, & Disposal

5.3 Spill Prevention & Control

6 Inspections

6.1 Inspection Frequency

6.2 Maintenance & Corrective Actions

7 End of Project

7.1 Final Site Stabilization

7.2 Temporary BMP Removal

8 Additional Information

EROSION & SEDIMENT CONTROL PLAN 1

1 INTRODUCTION

The purpose of this ESC Plan is to detail how the operator plans to minimize erosion caused by stormwater runoff and to prevent sediment and other construction pollution from entering the

Boise River, its tributaries, and ACHD’s storm drain system. This ESC Plan provides project details, identifies the control measures, and describes how and when these controls will be implemented and maintained.

1.1 PROJECT NAME

Project Name: ________________________________________________________________

1.2 PROJECT LOCATION

Street Address: _______________________________________________________________

City/State/Zip: ________________________________________________________________

Latitude: _____________________________ Longitude: ____________________________

2 CONTACTS

2.1 PLAN PREPARER

Contact Name: ________________________________________________________________

Company Name: ______________________________________________________________

Street Address: _______________________________________________________________

City/State/Zip: ________________________________________________________________

Email: _______________________________ Phone: ______________________________

2.2 OPERATOR/PERMIT HOLDER

Contact Name: ________________________________________________________________

Company Name: ______________________________________________________________

Street Address: _______________________________________________________________

City/State/Zip: ________________________________________________________________

Email: _______________________________ Phone: ______________________________

2.3 SUB-CONTRACTORS

Contact Name: ________________________________________________________________

Company Name: ______________________________________________________________

Street Address: _______________________________________________________________

City/State/Zip: ________________________________________________________________

Email: _______________________________ Phone: ______________________________

Bridge #2001 Munger Road Over Middleton Canal

North Munger Road - Floating Feather Rd to Catamaran Way

Star, Idaho, 83669

43º 42' 26.6'' N -116º 30' 11.6'' W

Spencer Savage, PE

David Evans and Associates

9175 West Black Eagle Drive

Boise, Idaho 83709 spencer.savage@deainc.com 208-900-9049

EROSION & SEDIMENT CONTROL PLAN 2

2.4 RESPONSIBLE PERSON

The listed Responsible Person (RP) has direct, day-to-day control over site activities. The RP shall serve as the 24-hour point-of-contact for all stormwater quality related issues. ACHD will be notified if the RP changes.

Contact Name: ________________________________________________________________

Company Name: ______________________________________________________________

Street Address: _______________________________________________________________

City/State/Zip: ________________________________________________________________

Email: _______________________________ Phone: ______________________________

RP Certification: _______________________ Expiration Date: _______________________

By signing below, the RP acknowledges that he or she has reviewed this ESC Plan and understands his or her responsibilities.

Signature: _________________________________________________ Date: ____________

3 SCOPE OF WORK

3.1 DESCRIPTION OF WORK

3.2 LAND DISTURBING ACTIVITY

All construction activity will stay within the limits of disturbance. Land disturbing activity, material staging, or any other activity related to construction in the right-of-way outside the permitted area may be deemed a violation. Disturbance limits are identified on the attached ESC map/drawing.

Length of Trenching: ______________________________

Total Disturbed Area: ______________________________

The primary purpose of the project is to replace the existing bridge that spans Middleton Canal on Munger Road with a pre-cast concrete box culvert. The existing bridge will be removed including the abutments, girders, and portions of the adjacent roadway. Installation of the new structure will include pre-cast box culvert sections, cast-in-place (CIP) wing walls, CIP apron and cutoff wall, riprap aprons, and roadway reconstruction on the northern and southern sides of the structure. An existing culvert for a minor irrigation supply lateral located ~50 feet north of the Middleton Canal structure will also be extended and riprap aprons will be added to both ends.

N/A

0.35 acres

EROSION & SEDIMENT CONTROL PLAN 3

3.3 SEQUENCE OF ACTIVITES

Work Activity Schedule

3.4 MATERIALS & POTENTIAL POLLUTANTS

Material or Potential Pollutant

Source of Pollutant

3.5 DEWATERING

If dewatering is anticipated, a Dewatering Plan will be attached to this ESC Plan. In no way does this ESC Plan alone allow the operator to discharge surplus water into the storm drain system. If discharging surplus water into the storm drain system is required, both a Dewatering Plan and a Dewatering Permit Application will be submitted to ACHD for review and approval.

▪ Is dewatering anticipated?

☐ Yes ☐ No

4 SITE ASSESSMENT

4.1 SITE DESCRIPTION

Mobilization (equipment transport, etc.)

Install temporary BMPs.

Install traffic / pedestrian detour signs.

Remove / demolish the existing bridge and adjacent roadway.

Install new box culvert, CIP wing walls/aprons, and riprap aprons.

Install culvert extension and riprap aprons.

Reconstruct adjacent roadway (base material, pavement, striping/markings).

Remove temporary BMPs and Demobilization

Oil & Grease Heavy equipment, haul trucks, and work vehicles

Sediment Roadway excavation, box culvert subgrade preparation, general earthwork/grading

Asphalt Roadway reconstruction

Concrete Cast-in-place wing walls, aprons, and cutoff walls

Paint Re-painting roadway markings / striping

Trash / Litter / Debris General construction activities

The project is located in Star, Idaho along Munger Road and crosses Middleton Canal.

The project begins just north of the W. Floating Feather Road & Munger Road intersection and ends just south of the N Catamaran Way & Munger Road intersection.

See project plans for additional information on the project location.

EROSION & SEDIMENT CONTROL PLAN 4

4.2 SITE FEATURES

▪ Are any predevelopment grades greater than 15 percent?

☐ Yes ☐ No

▪ Will any land disturbing activities occur within 50 feet of a wetland and or other waterbody?

☐ Yes ☐ No

▪ Are any of the listed receiving waters a 303d sediment or nutrient impaired water body?

☐ Yes ☐ No

▪ Is the project site on or adjacent to an EPA or DEQ listed site of concern (e.g. Superfund or Brownfield)?

☐ Yes ☐ No

4.3 RECEIVING WATERS

Name of Waterway/Waterbody

5 BEST MANAGEMENT PRACTICES

During the entirety of this project, the permit holder and RP will use the following BMPs to minimize erosion and pollutant discharges in stormwater. These controls will be designed, installed, maintained, and removed in accordance with the manufacture specifications and specifications in

DEQ’s Idaho Catalog of Stormwater Best Management Practices.

Middleton Canal (Discharges into Mill Slough and then into Boise River)

McHenry Flume / Irrigation Supply

Private Irrigation Supply / Lateral (No Name) https://www2.deq.idaho.gov/admin/LEIA/api/document/download/14968

EROSION & SEDIMENT CONTROL PLAN 5

5.1 EROSION & SEDIMENT CONTROLS

The following BMPs will be used for the project:

Minimize disturbance area

- Minimize land disturbance activities to the extent practicable to complete the work.

- Install additional temporary BMPs as needed if land disturbance occurs beyond the project limits due to equipment access.

Good housekeeping

- Implement dumpsters and trash bins as needed and empty the containers on a routine basis to minimize the spread of trash, litter, or debris.

- Dispose of any waste material or pollutants in accordance with applicable local, state, and federal regulations.

- Clean and sweep the interior of all vehicles and equipment on a routine basis to minimize the spread of trash, litter, or debris.

- The exterior of all vehicles and equipment must be cleaned and maintained on a regular basis and free of any deleterious material.

- Maintenance materials must be kept in an orderly manner at designated areas and clearly labeled.

- Minimize the volume of stockpiled waste material and debris that is awaiting disposal. Install additional BMPs approved by ACHD around stockpiled material.

Stabilized construction entrance

- Install stabilized construction entrances to prevent track-out from the project area.

- Maintain or improve stabilized construction entrances as needed during construction.

Concrete clean-out

- Provide concrete clean-out areas at the locations shown on the project plans or within the project limits as approved by ACHD.

- Clean-out areas must not be located near drainage systems or areas surrounding irrigation ditches, streams, or open channels of any kind.

- Inspect and maintain clean-out areas on a routine basis. Remove any affected soils, materials, and concrete from the area and dispose of material at an approved landfill.

Straw wattles (perimeter control)

- Straw wattles are proposed for the project as perimeter control. Other perimeter control BMPs may be used in lieu of straw wattles as approved by ACHD.

- Install straw wattles prior to any land disturbing activities and in accordance with manufacturer's recommendations, ACHD policies, and ISPWC specifications.

- Inspect straw wattles on a routine basis. Maintain areas where sediment has built-up behind the straw wattles by removing accumulated sediment. Replace damaged sections as needed to provide proper perimeter control.

Sweep work area

- Maintain clean work areas on paved surfaces that are located within and immediately outside the project limits.

- Sweep all paved areas where track-out has occurred. Dispose of swept material in accordance with local, state, and federal regulations.

EROSION & SEDIMENT CONTROL PLAN 6

5.2 MATERIAL HANDLING, STORAGE, & DISPOSAL

Material handling, disposal, and storage will be performed in accordance with local, state, and federal regulations and performed in a manner to prevent or reduce the discharge of pollutants to adjacent drainage systems and waterways. All material must be stored within the project limits at locations designated on the plans or in a different location approved by ACHD. Material storage in the areas surrounding drainage systems, irrigation ditches, or open channels of any kind is prohibited without proper BMPs being installed. All material stored on-site must be clearly and properly labeled.

Primary and secondary containment BMPs will be installed as needed too contain any spills or leaks. Temporary BMPs such as perimeter controls will be installed around any stockpiled material including subbase material, backfill material, or riprap.

EROSION & SEDIMENT CONTROL PLAN 7

5.3 SPILL PREVENTION & CONTROL

Required Notifications:

Agency Phone Number Notification

Stormwater Pollution Hotline

208-395-8888 Spills to the storm drain system.

Idaho Department of Environmental

Quality

208-373-0550

Notification must be made immediately if a hazardous material is spilled to surface water or to land such that there is likelihood that it will enter surface waters.

Petroleum spills to land of more than 25 gallons require notification within 24 hours. Petroleum spills of any size that causes a sheen on nearby surface water require notification within 24 hours. Spills less than 25 gallons and do not cause a sheen are only required to be reported if cleanup cannot be accomplished within 24 hours.

Idaho State Communication

Center 800-632-8000

If assistance is needed responding and to a spill or accident involving oil, gas, or hazardous material.

National Response Center

800-424-8802 Within 24 hours of an oil or chemical spill that is a reportable quantity per 40 CFR 302.

Spill prevention and control activities are required for the project. These activities include agency notifications, spill response, spill containment, and material disposal.

Information regarding agency notification and associated requirements are provided in the table below. Mobile refueling will be minimized and equipment will be transported to designated fueling areas when practical. Spill kits are required for any refueling and maintenance activities, including but not limited to checking oil, brake fluid, hydraulic fluid, radiator coolant, power steering fluid, transmission fluid, and gear oil. All refueling and maintenance activities will be performed away from areas surrounding drainage systems, irrigation ditches, streams, or open channels of any kind.

EROSION & SEDIMENT CONTROL PLAN 8

6 INSPECTIONS

During each site inspection, the RP will at a minimum check whether all BMPs are installed, operational, and working as intended to minimize pollutant discharges. The RP will also check for the presence of conditions that could lead to spills, leaks, or other accumulations of pollutants on the site. Any locations where new or modified stormwater controls are necessary will be identified during the inspection.

6.1 INSPECTION FREQUENCY

At a minimum, the RP will conduct a site inspection in accordance with one of the two schedules below:

☐ Once every seven calendar days.

☐ Once every 14 calendar days, and within 24 hours of a storm event producing 0.25 inches or greater of rain.

6.2 MAINTENANCE & CORRECTIVE ACTIONS

Specific maintenance requirements for each BMP, as well as any recommendations by the manufacturer will be followed. The RP will address any BMP failures by determining whether there was a failure in design, installation, or maintenance. The RP will perform the appropriate measures to correct the failure, including determining whether BMPs should be modified or if additional measures will be taken. The RP will immediately initiate corrections and complete such work by the close of the next business day.

7 END OF PROJECT

7.1 FINAL SITE STABILIZATION

Final site stabilization will be initiated as soon as practicable in portions of the site where construction activities have permanently ceased, but in no case more than 14 days after the construction activity in that portion of the site has stopped. Once final landscaping and/or final stabilization have been completed and the project receives final inspections approval, the conditions of this ESC Plan shall cease.

7.2 TEMPORARY BMP REMOVAL

All temporary physical BMPs will be removed after final site stabilization. All debris and sediment left on the street will be swept and removed at the end of the project.

EROSION & SEDIMENT CONTROL PLAN 9

8 ADDITIONAL INFORMATION

Based on discussions with the Middleton Mill Irrigation Company, water can be diverted from Middleton Canal to Drain 10 north of the structure (and vice versa) to assist with dewatering. Since this canal can have year-round flow, it is anticipated that water will be diverted to Drain 10 to allow for construction of Bridge #2001. The contractor must coordinate water diversion activities between Middleton Canal and Drain 10 with Middleton Mill Irrigation Company staff and ACHD personnel. The contractor is still required to use approved dewatering measures for localized groundwater during construction.