OPERATION & MAINTENANCE MANUAL

Choose an item.

Manual prepared: Month YYYY

DFI No.	Dxxxxx

Figure 1: DFI No. Dxxxxx, looking [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.

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

(Complete this section for detention tanks and manifold detention systems only. Delete this section if facility is a vault)

The length, width, and depth of the detention tank is based on the dimensions referenced in Figure #Figure 4. The depth is the vertical distance measured from the bottom of the detention facility to the rim of the access opening.

The dimensions of the detention facility are:

Facility Type	Length (feet)	Depth (feet)	Number of tanks/pipes	Tank/Pipe Diameter (inches)
Choose an item.	XXX	XXX	XXX	XXX

Figure 3: Reference dimensions for a detention tank

Figure 4: Reference dimensions for a manifold detention system

(Complete this section for detention vaults only. Delete this section if facility is a detention tank or manifold system)

The length, width, and depth of the detention vault are based on the dimensions referenced in Figure #. The depth is the vertical distance measured from the bottom of the detention vault to the rim of the access opening.

The dimensions of the detention vault are:

Length (feet)	Width (feet)	Depth (feet)
XXX	XXX	XXX

Figure 5: Reference dimensions for a detention vault

Site Specific Information: Add site specific information that is not standard to the Operation Manual. This can include a description of the Haz Mat and/or ventilation components for the facility.

Facility Access

Maintenance access to the facility:

☐Roadside pad	☐Roadside shoulder
☐Access road with Gate	☐Access road without Gate
☐Confined Space Entry	☐Lane Closure needed

Figure 6: [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:

☐ Operational Plan A Detention Tank	☐ Operational Plan B Detention Vault	☐ Operational Plan C Manifold Detention System
A standard operational plan illustrates the general facility footprint configuration and explains the purpose of each facility component. Operational plans (A, B, C) are provided in the Standard Operation Manual.

See Appendix A for the site specific operational plan.

Key Features/Items:

☐	This facility has a bypass component (T2). T2 is a(n):

☐ Weir type flow splitter	☐ Orifice type flow splitter	☐ Other: Describe type

☐	This facility has a Pre-treatment Manhole (T1). T1 is a(n):

☐ ODOT Pollution control manhole
☐ CDS (Continuous Deflective Separator)
☐ Downstream Defender
☐ Stormceptor
☐ Bayfilter

Include manufacturer’s Operaion and Maintenance manual as part of this document. Attach as Appendix C.

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 detention tanks/vaults, 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: Detention Tank/Vault Components	ID #
Manholes
Pre-Treatment Manhole	☐
Flow Splitter Manhole	☐
Flow Control Manhole	☐
Standard Manhole	☐
Sump	☐
Facility Inlet
Inlet Pipe (list diameter – material type)	☐
Facility Structures
Main Tank/Vault	☐
Additional Back-Up Tank	☐
Manifold Pipe (list diameter – material type)	☐
Connecting Pipe (list diameter – material type)	☐
Access Opening	☐
Facility Outlet
Outlet Flow Control	☐
Drainage Mechanism	☐
Outlet Pipe (list diameter – material type)	☐
Outfall Type
Outfall (Waterbody, Creek/Lake/Ocean)	☐C ☐L ☐O
Ditch	☐
Storm Drain System	☐
Outfall Components
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 detention tanks or vaults:

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

Table 6 (Detention Vaults): Contains maintenance information for detention vaults

Table 7 (Detention Tanks): Contains maintenance information for detention tanks and large diameter pipe

For this facility,

☐ Jet Rodding is allowed	☐ Jet rodding in NOT allowed

The Maintenance Guide can be viewed here:

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

Limitations

Care should be taken when vehicles enter the facility to prevent the creation of depressions (tire ruts) and limit damage to vegetation and structural components. Maintenance vehicles should remain upon provided access areas.

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

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Appendix B – Project Contract Plans

Contents:

Site Specific Subset of Project Contract Plan XXV-XX

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Appendix C – Proprietary Manufacturer’s O&M Manual

Contents:

Manufacturer’s Operation & Maintenance Manual

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