OPERATION & MAINTENANCE MANUAL

Choose an item.

Manual prepared: Month YYYY

DFI No.	Dxxxx

Figure 1: DFI No. Dxxxx, looking [cardinal direction]

Identification

Drainage Facility ID (DFI):	Dxxxx
Facility Type:	Choose an item.
Construction Drawings:	(V-File Numbers) XXV-XX
Location:	District: XX Highway No.: XXX Mile Post: XXX to XXX, [side]

Manual Purpose

The purpose of this manual is to outline inspection needs and summarize maintenance actions.

Facility Location

The location map below details the facility location. The highway, mile posts, side streets, access location, and stormwater flow directions are noted on the map. NOTE: Mile posts are based off of the V-File, and may vary from TransGIS mile posts.

Facility location type: Choose an item.

Flow direction: [note cardinal direction]

Figure 2: [ODOT Geo-Environmental to insert facility location map]

Facility Summary

The width is measured perpendicular to the edge of pavement and is equivalent to the flow length. The length is measured parallel to the edge of pavement and is equivalent to the length of the contributing impervious area.

The length and width of the applicable facility components are:

Component	Length (feet)	Width (feet)
Filter Strip	XXX	XXX
Bioslope	XXX	XXX

Figure 3: Filter Strip Section

The slope of the facility is presented by a vertical distance (rise) followed by the horizontal distance (run).

Side Slope	Rise (feet)	Run (feet)
Filter Strip	XXX	XXX
Bioslope	XXX	XXX

Figure 4: BioSlope Section

Site Specific Information: Add site specific information that is not standard to the Operation Manual

Facility Access

Maintenance access to the facility:

☐Roadside pad	☐Roadside shoulder
☐Access road with Gate	☐Access road without Gate

Figure 5: [insert post construction facility access photo and caption text]

Operational Components / Maintenance Items

Classification and Standard Operational (Op) Plan:

This facility is classified as a:

☐ Filter Strip (Op Plan A) A filter strip consists of a vegetated or media slope located parallel to the edge of pavement. It maintains sheet flow of stormwater runoff over the width of the strip.	☐ Bioslope (Op Plan B) A bioslope consists of a filter strip and treatment zone. It is a flow-through stormwater treatment facility located along roadside embankments.
A standard operational plan illustrates the general facility footprint configuration and explains the purpose of each facility component. Operational plans (A, B) are provided in the Standard Operation Manual.

See Appendix A for the site specific operational plan.

Operational Components

Filter strips and bioslopes have many components that assist with treatment, conveyance, and infiltration of stormwater runoff. The components in use can vary depending on the facility design. The facility components table (Table 1) highlights the applicable components for this facility. The component is in use when the box contains an “x” (e.g. ☒ ).

The Standard Operation Manual for Water Quality Filter Strips and Bioslopes (implemented October 2018) outlines facility operation, typical footprint configuration, and component definitions and details. A link to the manual is attached to the feature marker in TransGIS.

https://gis.odot.state.or.us/TransGIS/

Maintenance Items

Operational components marked in Table 1 should be inspected and maintained according to Section 7. Each facility component is defined and detailed in the Standard Operation Manual using the associated ID number indicated below.

Table 1: Bioslope/Filter Strip Components	ID #
Facility Inlet
Pavement Sheet Flow	☐
Shoulder Aggregate	☐
Ground Cover
Vegetated Slope	☐
Aggregate Media Slope	☐
Underground Components
Water Quality Mix	☐
Ecology Mix	☐
Granular Drain Backfill Material	☐
Geotextile Fabric	☐
Geocell Grid	☐
Structures
Curb/Berm	☐
Check Dam	☐
Cleanout	☐
Facility Outlet
Perforated Drain Pipe	☐
Open Slope Outlet	☐
Open Channel Outlet	☐
Storm Drain Outlet Pipe	☐
Outfall Type
Waterbody (Creek/Lake/Ocean)	☐ C ☐ L ☐ O
Outfall Channel	☐
Storm Drain System	☐
Outfall Components
Pervious Berm	☐
Riprap Pad	☐

Maintenance

Maintenance Frequency/Maintain Records

Inspect annually, preferably prior to the rainy season.

Clean and maintain as necessary. Refer to Activity 125 for conditions when maintenance is needed.

Keep a record of inspections, maintenance, and repairs.

Maintenance Guide/Maintenance Actions

The ODOT Maintenance Guide lists the standard maintenance actions for water quality facilities under Activity 125.

Standard maintenance tables describe the maintenance component, the potential defect or problem, the condition when maintenance is needed, and the recommended maintenance to correct the problem. Use the following tables to maintain ODOT filter strips and bioslopes:

Table 1 (General Maintenance): Contains general maintenance and inspection guidelines that are applicable to all ODOT water quality facilities

Table 4 (Water Quality Filter Strips)

Table 5 (Water Quality Bioslopes)

The Maintenance Guide can be viewed here:

http://transnet.odot.state.or.us/hwy/MaintOPs/Pages/Maintenance%20Guide.aspx

Limitations

Filter strips and bioslopes are NOT designed to allow the use of heavy equipment. Vehicles entering the facility can create depressions (tire ruts), damage vegetation, and damage structural components (e.g. flow spreaders). These conditions may result in poor treatment and drainage performance.

Waste Disposal

Material removed from the facility is defined as waste by the Department of Environmental Quality (DEQ). Refer to the road waste section of the ODOT Maintenance Yard Environmental Management System (EMS) Policy and Procedures Manual for disposal options:

http://www.oregon.gov/ODOT/Maintenance/Documents/ems_manual.pdf

Contact any of the following for more detailed information about management of waste materials found on site:

ODOT Materials Management Coordinator	(503) 731-8493

ODOT Statewide Hazmat Coordinator	(503) 667-7442

ODOT Region 1 Hazmat Coordinator	(503) 731-8290

ODOT Region 2 Hazmat Coordinator	(503) 986-2647

ODOT Region 3 Hazmat Coordinator	(541) 957-3594

ODOT Region 4 Hazmat Coordinator	(541) 388-6186

ODOT Region 5 Hazmat Coordinator	(541) 963-1590

ODEQ Northwest Region Office	(503) 229-5263

Appendix A – Site Specific Operational Plan

Contents:

Operational Plan: DFI Dxxxx

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Appendix B – Project Contract Plans

Contents:

Site Specific Subset of Project Contract Plan XXV-XX

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