OPERATION & MAINTENANCE MANUAL

Choose an item.

Manual prepared: Month/Year

DFI No.	Dxxxxx

Water Quality Manhole DFI No.	Dxxxxx

(if applicable)

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

Identification

Drainage Facility ID (DFI):	Dxxxxx
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 for stormwater ponds.

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.

Facility location type: Choose an item.

Flow direction: [note cardinal direction]

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

Facility Summary

The pond size is based on storage volume, the bottom and top surface areas and the depth are used for this measurement.

The bottom area and top area of the pond is:

Bottom Area (sq. ft.)	Top Area (sq. ft.)
XXX	XXX

Top Width

Bottom Length Top Length Bottom Width

The depth of the pond is the vertical distance measured from the bottom of the pond to the top. The slope of the pond sides is presented by a vertical distance (rise) followed by the horizontal distance (run).

Depth and side slopes:

Depth (feet)
XXX

Side Slope
Rise (feet)	XXX
Run (feet)	XXX

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 3: [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:

☐ Detention Pond (Op Plan A)	☐ WQ Bioretention Pond (Op Plan B)	☐ WQ Extended Detention Dry Pond (Op Plan C)	☐ WQ Detention Pond/Biofiltration Swale Combo (Op Plan D)
A standard operational plan illustrates the general facility footprint configuration and explains the purpose of each facility component. Operational plans (A,B,C,D) are provided in the Standard Operation Manual.

See Appendix A for the site specific operational plan.

Key Features/Items:

This facility is classified as a:

☐ Dry Pond	☐ Wet Pond
The pond is wet during storm events and dries during periods of no precipitation.	The pond has constant presence of water year round. A portion of the pond dries during periods of no precipitation.

This facility includes a high flow bypass component:

☐ No	☐ Yes
There is no bypass component. High flows drains into and through the facility	There is a bypass component. Only low/small flows drain into the pond. High flows are diverted around the pond using a bypass component

This facility includes a proprietary structure(s):

☐ No	☐ Yes (DXXXXX)
There are no proprietary structures associated with this facility.	A proprietary structure is used in the operation of this facility. The proprietary structure is a/an: describe

Operational Components

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 Ponds (implemented May 2019) 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 in the table below.

Table 1: Stormwater Pond Components	ID #
Upstream Manholes/Structures
Pre-treatment Manhole Type: describe	☐
Water Quality Manhole Type: describe	☐
Flow Splitter Manhole (Weir/Orifice)	☐
Standard Manhole	☐
Sediment Basin/Forebay	☐
Forebay Dewatering Riser Pipe (outlet)	☐
Facility Inlet
Pavement Sheet Flow	☐
Inlet Pipe(s)	☐
Open Channel Inlet	☐
Riprap Pad (Energy Dissipater)	☐
Ground Cover
Grass Bottom	☐
Grass Side Slopes	☐
Granular Drain Rock	☐
Plantings	☐
Underground Components
Geotextile Fabric: Specify Type	☐
Impermeable Liner	☐
Water Quality Mix	☐
Perforated Pipe	☐
Bottom Marker (ex. Porous Pavers)	☐

Flow Spreader
Anchored Board (midpoint of pond or every 50 feet along pond bottom)	☐
Other: describe	☐
Facility Outlet
Catch Basin with Grate	☐
Outlet Pipe(s)	☐
Outlet/Flow Control Structure	☐
Auxiliary Outlet	☐
Hazmat Control Valve: Specify make/model	☐
Outfall Type
Waterbody (Creek/Lake/Ocean)	☐ C ☐ L ☐ O
Ditch	☐
Storm Drain System	☐
Outfall Components
Riprap Pad	☐
Riprap Bank Protection	☐

Maintenance

Maintenance Frequency/Maintain Records

Inspect annually, preferably prior to the rainy season.

Clean and maintain as necessary. Refer to Activity 125 in the Maintenance Guide 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 Ponds:

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

Table 2 (Maintenance of Stormwater Ponds): Contains maintenance information for ponds

The Maintenance Guide can be viewed here:

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

Limitations

There are access limitations for this facility:

☐ No	☐ Yes
There are (no, light, med., heavy) duty porous pavers installed in this pond.

Ponds are designed to allow equipment access along the bottom if an access grid is installed. If an access grid is NOT installed, vehicles entering the pond can create depressions (tire ruts), damage vegetation, or damage structural components (e.g. flow spreaders). These conditions may result in poor treatment and drainage performance.

If no access grid then: Equipment wheels should be kept on the tops and side slopes. Mower arms may be run along the pond bottom.

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 Dxxxxx

[BLANK]

Appendix B – Project Contract Plans

Contents:

Site Specific Subset of Project Contract Plan XXV-XX

[BLANK]

Appendix C – Manufacturer’s Operation & Maintenance Manuals

This appendix contains the Operation & Maintenance Manual for any proprietary structures.