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1. Version, Date. 1, 15 Jun 07 (BK)

2. Purpose. This procedure establishes the processes for installation and maintenance of oil water separators (OWSs), which are used to remove fuels, lubricants and solids from stormwater and washwater. 3. Applicability

a. Audience. This procedure applies to Facilities Engineering and Acquisition Department (FEAD) personnel, who are responsible for construction oversight for new OWS systems as well as contract oversight for existing OWS. This procedure is primarily for the Designated Government Representative (DGR) Utilities personnel responsible for scheduling OWS cleanout, and Facilities and Logistics Services Section (FLSS) personnel, responsible for requested repair of OWSs. b. Scope. This procedure applies to all OWSs aboard Marine Corps Base (MCB) Quantico. This procedure encompasses OWS maintenance measures (clean out and repair), as well as those implemented during new construction activities. 4. Definitions. this procedure: The following definitions are provided to support

a. Oil Water Separator (OWS) ­ a device used to remove floating fuels and lubricants from stormwater and washwater that would otherwise be flushed into the storm or sanitary sewer system or receiving channels. b. Spill Prevention, Control and Countermeasure (SPCC) Plan Plan covering the release of hazardous substances as defined in the Clean Water Act. c. Coalescer plates/screens - This provides a suitable surface for oil droplets to meet and grow (coalesce) into larger droplets. As oil droplets grow in size the buoyancy of the droplets increases. In this way the oil will form a layer that can be separated from the water by skimming action before the water is reused or discharged. Any heavy solids present in the water being treated, or sludge, in theory should fall into the sludge compartment of the OWS unit. d. Emulsification ­ The suspension of one liquid in another, for example, oil in water. An example of a detergent that creates this

U:\NREA BRANCH\B 0463_EMS\EMS DATA\ESOPs\Final ESOPs\7 Oil Water Separator\Oil Water Separator ESOP 15 Jun 07.doc

Oil and Water Separators ESOP

effect is the Dawn brand of detergent, "it cuts through grease", i.e. through emulsification. 5. Responsible Parties. The following parties in the Facilities Division (G-5) are responsible for OWS procurement and maintenance processes at MCB, Quantico: a. Natural Resource and Environmental Affairs Branch (NREA) (1) Water Program Manager (2) Spill Program Manager b. Public Works Branch (PWB) (1) Facilities Engineering & Acquisition Department (FEAD) (a) Project Management Engineering Section, In House Design (PME(D)) (b) Project Management Engineering Section, Construction (PME(C)) (c) Facility Support Contracts Section (FSC) (2) Designated Government Representative (DGR) Utilities (3) Facilities and Logistics Services Support (FLSS) c. Contractors performing activities requiring OWS installation or cleanout 6. Procedures (Instructions for Operational Control) for new construction. The following shall be implemented where an OWS may assist in the protection of the Base stormwater sewage system, surface water bodies (ponds, lakes, rivers, or streams), and the Base sewage treatment system: a. Any proposed facility that may impact water quality due to potential discharge of petroleum constituents to the stormwater or sanitary sewage systems should include consideration for an oil water separator. Examples of such facilities that may require an OWS include carwashes, automobile maintenance facilities, and fuel farms. b. NREA Water Program Manager will be consulted during the planning phase for any proposed facility that may impact water quality due to potential discharge of petroleum constituents to the stormwater or sanitary sewage systems. c. PME(D) will evaluate facility designs submitted by architecture and engineering firms. The architecture and engineering


Oil and Water Separators ESOP

firms will determine the need and size of oil water separators in their facility designs. d. FEAD communicates the construction activities on Base to the DGR Utilities and NREA. NREA will evaluate the adequacy of the OWS in design and identify if the Base's Stormwater Pollution Prevention Permit and Plan would require modification. e. During the construction of OWS separators, it is imperative that the contractors know utility locations. Utilities are located for the purpose of tying the OWS systems into sewage lines and for avoiding impacts to other utilities (i.e. natural gas, water, telecommunications, electricity, etc.). FLSS locates utilities for construction contract activities. This is initiated when a contractor submits an excavation permit request form to DGR. f. PME(C) conducts periodic inspections throughout contract execution, to ensure the work is being performed as contracted. Upon completion of construction activities, the PME(C) office performs a walk-through visual inspection with support from FLSS Shop 20 to ensure the final product or end state meets contract requirements, and that the contractor makes any needed corrections prior to contract close-out. g. At the time that this procedure was prepared, 18 OWS systems existed on Base, 15 of which discharge to the Base sanitary sewage system. The three OWS systems located at the Motor­T wash rack (Tank 3016), the Fuel Farm (Tank 27263), and the Engineer Test Site (Tank 28000) require monitoring because they discharge to the storm sewer system, and ultimately the Potomac River. h. An inventory of existing OWS systems is provided as Attachment 15-1. As OWS systems are added or removed from the Base, the inventory is required to be modified in the Integrated Spill Management plan, Base Stormwater Pollution Prevention Plan, and the existing OWS cleanout contract administered by FSC. 7. Procedures (Instructions for Operational Control) for Maintenance. a. General

(1) All of the existing Base OWS systems are designed to be essentially "self-functioning"; they receive oily water, separate the oil through differences in density, and discharge the treated water automatically through gravity fed flow. Control or operation of the separation process by Quantico personnel is not necessary or feasible. (2) It should be noted that chemicals will not be stored or used near OWS systems. Detergents which are not approved for use if introduced to an OWS system, can cause the emulsification of oil and grease, creating the potential for a release to the storm or sewage systems. Contact NREA at 784-4030 for additional information on


Oil and Water Separators ESOP

authorized and unauthorized detergents, or if unauthorized detergents are released into the storm or sewage system. (3) Proper operation of an OWS system is largely dependent upon adequate maintenance. Maintenance of the OWSs, as addressed by this procedure, consists primarily of clean out and repair of the OWSs, in order to control flow rates and types of materials entering the systems. (4) All cleanout of Base OWS systems is performed by OWS companies, contracted by FSC. Because each OWS receives wastewater from unique sources and in varying quantities, cleanout schedules will be unique to each OWS system. However, contracted OWS maintenance companies are required to perform inspections and cleanout of all OWS systems on an annual basis, at a minimum. b. Annual Inspection and Clean Out. The contractors responsible for OWSs, under contract by FSC, should perform the following activities at least once per year on each OWS: (1) The contractors shall inspect each OWS to determine if repair is required, per conditions in their work statement (requirements may vary slightly from year to year as regulations are amended). Inspection reports (Attachment 15-2) shall be provided to the appropriate contracting representative within FSC, one week afterwards. (2) The contractor will be responsible for the collection and analysis of oily liquid from OWS systems, as specified in their contract. Typically this involves using on-site qualitative procedures, and when those indicate that the tested materials may be classified as hazardous waste, a verification sample will collected and a verification test shall be performed. (3) The contractor will remove accumulated oil and remaining water. Sludge, debris, and other solids will be removed from the OWSs and sedimentation basins using a vacuum truck. Other equipment will be used as appropriate. A properly licensed/permitted contractor will be used to remove and transport the oil, water, sludge, and solids to an appropriately permitted disposal facility. (4) Remove and clean the coalescer plates/screens (if present) by spraying with water. (5) Clean the interior of the separator with high-pressure water spray. The FSC contracting representative will confirm that OWS contractor's inspection reports have been received for all OWS on Base, and that the contractor has performed the required annual clean out by the end of each fiscal year.


Oil and Water Separators ESOP

The NREA Water Program Manager will coordinate with the FSC contracting representative to obtain the contractor's inspection report and clean out confirmation for the OWSs that drain to the storm sewer at the end of each fiscal year. c. Clean out

For all OWSs, the frequency of clean-out will vary according to OWS usage. Clean out consists of the following: (1) Pump out remaining water and clean inside of the separator compartment. (2) Remove accumulated oil/grease when the level of accumulated oil approaches 1/3 of the diameter of the separator (i.e. 25% of the separator volume). Although some OWSs can function at oil levels up to 50% of separator volume, the 25% level provides capacity for spill events. (3) Remove sludge/debris when the thickness of sludge accumulated in the bottom of the OWS reaches approximately one foot. (4) Clean coalescer plates/screens following oil spills or heavy rainfalls, or based upon results of visual inspections. (5) Additionally, remove debris, including sludge and sediment, from catch basins and drainage ditches/channels draining to the OWSs. Cleaning these areas minimizes the amount of sediment and debris entering the OWS system. FSC will perform random checks of the OWSs throughout the year to ensure that clean out is being performed properly in a timely manner by the contractor. (6) In addition to the annual clean-out of OWS systems, any Base personnel who discover the need for additional OWS cleanout will call DGR. DGR will then notify FSC to schedule the clean out with the OWS contractor. (7) DGR will notify NREA if there is a potential for an overflow that could contaminate surface waters or could cause a reportable quantity spill. The NREA Water Program and Spill Program Managers will then determine if surface water and sediment sampling are required. d. Repair

(1) Repairs may be noted in the OWS contractor's inspection reports of the OWSs (Attachment 15-2) or via a Work Request submitted by Base personnel.


Oil and Water Separators ESOP

(2) If repairs need to be made on an OWS, FSC will notify DGR who will submit a Work Request to FLSS. If the repair is not within FLSS's capability, then the repair request is sent to FEAD. (3) If FLSS performs the repair, DGR will verify that the repair was completed. If a contractor performs the repair, the appropriate contract representative will verify the repair was completed. 8. Inspection and Corrective Action

a. Proper operation of OWSs requires periodic monitoring to assess the sludge and oil levels in the OWSs. Units with OWS should monitor the following items: (1) Sludge level in OWS (2) Accumulated oil level in OWS (3) Condition of inlet drains (4) Evidence of oil or solids in effluent (5) General condition of OWS (The specifications listed in paragraph 7.c(1)-(5) may be referenced.) b. Inspections of each OWS and ancillary equipment will be performed at a minimum annually by contractors. An example Inspection Report is included as Attachment 15-2. c. The FSC contract representative will ensure that inspections, clean out, and applicable corrective actions are completed by contractors. d. DGR will ensure that any requested repairs to be performed by FLSS are completed. 9. Internal Communication a. b. New Construction Activities. Refer to Paragraph 6. Refer to Paragraph 7.

Clean out or repair of OWS systems.

c. Customer complaints. DGR Utilities notifies FSC, who initiate action from contractors who service the OWS systems. 10. Training/Awareness

a. Stormwater Pollution Prevention Training is provided by the NREA Water Program Manager to the target audience mentioned in paragraph 3.


Oil and Water Separators ESOP

b. NREA Training Coordinator facilitates training on this ESOP, to the target audience mentioned in paragraph 3.a. c. Additional training is required for contractors servicing OWS systems and is specified in their statement of work, as a requirement of the contract. 11. Emergency Preparedness and Response

a. If an OWS device failure occurs, notify the Base Fire Department if a release is suspected and notify the DGR immediately thereafter. The Fire Department will then notify the NREA Spill Program Manager after the initial assessment and response. b. Contain leaks if it can be done so safely by shutting off valves to the sanitary sewage system or berming off the stormwater sewage system and associated outfalls. Note, this should only be done if the individual has had Basic Spill Prevention, Control and Countermeasures Training and is familiar with the valve mechanism(s). c. DGR will assess if the sanitary or stormwater sewage systems can be shut to prevent damage to the Base sanitary sewage system, Base water treatment system or surface water bodies, respectively. d. If the release is from an OWS system that flows to the stormwater sewage system DGR subsequently manages the release in coordination with the NREA Spill and Water Program Managers. If it is to the sanitary sewer system, the cleanup is performed strictly under the guidance of DGR Utilities. e. NREA Branch Hazardous Waste personnel document the release and any corrective actions and maintain the documentation at the NREA office. 12. References and Related Documents. relevant to this procedure: a. b. b. c. d. e. f. USEPA Safe Drinking Water Act USEPA Clean Water Act Virginia Uniform Statewide Building Code MCB, Quantico Stormwater Pollution Prevention Plan, April 2006 MCB Quantico Integrated Spill Management Plan, 2007 MCB Quantico Oil Water Separators, Attachment 15-1 Oil Water Separator Inspection Report, Attachment 15-2 The following references are


Oil and Water Separators ESOP

13. Document Revision History. revisions of this SOP:

The following provides a history of

Revision Number


Revision Made By



Summary of Change and Reason


14. Document Owner. This document has been reviewed and approved by the document owner. Any revisions or future updates to the procedure will be completed by the document owner as needed. a. NREA b. Document Approval. Mr. Bruce Frizzell, Chair, EMS Core Team Document Owner. Ms. Nikki Bennett, Water Program Manager,


MCB Quantico Oil Water Separators

Tank Number System Use Location Substance Stored Estimated Capacity (gallons) 10,000 20 GPM 50 GPM 500 550 50 GPM 4,000 200 GPM Capacity of Oil Recovery Tank None 100 100 None 50 100 None 50 Tank Material Direction of Flow Status

2012 OWS 2013 OWS 2112 OWS 3016 OWS 3045 OWS 3056 OWS 3185 OWS 24007 OWS

Central Heating Plant Motor T Garage HMX-1 Motor T Wash Rack Ordnance Branch MWR Car Wash COM Officer School TBS Motor T Transport Wash Rack HMX Green Side TBS Track Vehicle Maintenance TBS Track Vehicle Maintenance

Oily Waste Oily Waste Oily Waste Oily Waste Oily Waste Oily Waste Oily Waste Oily Waste Oily Waste Oily Waste Oily Waste

Steel Steel Steel Steel Steel Steel Steel Steel

To Potomac To storm sewer system (Potomac) To sanitary sewer system To sanitary sewer system To sanitary sewer system To sanitary sewer system To sanitary sewer system To sanitary sewer system To sanitary sewer system To sanitary sewer system To sanitary sewer system

Not in use Active Active Active Not in use Active Active Active

2101 OWS 2409 OWS #1 2409 OWS #2

50 4,000

100 None (sediment basin) 550

Steel Steel

Active Active




26145 OWS 27002 OWS

Camp Upshur Wash Rack Guad Maintenance

Oily Waste Oily Waste

4,000 100 GPM

550 1,000 (sediment

Steel Steel

To sanitary sewer system To sanitary sewer system

Active Active

Attachment 15-1

U:\NREA BRANCH\B 0463_EMS\EMS DATA\ESOPs\Final ESOPs\7 Oil Water Separator\Oil Water Separator 07.doc ESOP 15 Jun

Oil and Water Separators ESOP

Tank Number

System Use Location

Substance Stored

Estimated Capacity (gallons)

27004B OWS 27054 OWS 27263 OWS 28000 OWS 2080 OWS OWS

Landfill CER Fuel Farm Engineer Test Site Hobby Shop HMX-1 White Side Hangar HMX-1 White Side Hangar HMX-1 Green Side Hangar TBS Armory

Oily Waste Oily Waste Oily Waste Oily Waste Oily Waste Fuel, AFFF Fuel, AFFF Fuel, AFFF Oily Waste

200 GPM 500 5,000 550 TBD 2,400

Capacity of Oil Recovery Tank basin) 50 None 2,000 50 TBD TBD

Tank Material

Direction of Flow


Steel Steel Steel Steel TBD TBD









OWS (2)




To sanitary sewer system To sanitary sewer system To storm water system To storm water system To sanitary sewer system To sanitary sewer system, via pump station #1 To sanitary sewer system, via pump station #2 To sanitary sewer system, via pump station #3 TBD

Not in use Active Active Not in use Active Active, new 2007 Active, new 2007 Active, new 2007 New 2007






Attachment 15-2

U:\NREA BRANCH\B 0463_EMS\EMS DATA\ESOPs\Final ESOPs\7 Oil Water Separator\Oil Water Separator 07.doc

ESOP 15 Jun


Microsoft Word - Oil Water Separator ESOP 15 Jun 07.doc

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