Montana Department of Environmental Quality About Us Permitting & Operator Assistance Public Participation

Tanks, Waste & Recycling

Permitting and Operator Assistance

Solid Waste Forms

Hazardous Waste Forms

Reporting Forms

Montana Hazardous Waste Annual/Biennial Reporting

  Format
Annual Hazardous Waste (HW) Report for Exports of HW to a Foreign Country Example and Instructions Annual Hazardous Waste Report for Exports of Hazardous Waste to a Foreign Country Example and Instructions Adobe format Annual Hazardous Waste Report for Exports of Hazardous Waste to a Foreign Country Example and Instructions Word format
  Format
Annual Montana Commercial Transfer Facility Report Reminder Annual Montana Commercial Transfer Facility Report Reminder  
Annual Montana Commercial Transfer Facility Report Template Annual Montana Commercial Transfer Facility Report Template Adobe format  
  Format
Cover Memo for the Montana 2020 Large and Small Quantity Hazardous Waste Generator Report Montana 2020 Large or Small Quantity Hazardous Wste Generator Report Cover Letter  
Instructions for completing the Montana 2020 Large and Small Quantity Hazardous Waste Generator Report Form Montana 2020 Instructions for Completing the Large or Small Quantity Hazardous Waste Generator Report Form  
2020 Large and Small Quantity Hazardous Waste Generator Report Form 2020 Large or Small Quantity Hazardous Waste Generator Report Form Annual Hazardous Waste Report for Exports of Hazardous Waste to a Foreign Country Example and Instructions Word format      
Example of a Completed 2020 Large and Small Quantity Hazardous Waste Generator Report Form Example of a Completed Large or Small Quantity Hazardous Waste Generator Report Form  
  Format
Cover Memo for the Montana 2020 TSD Facility Annual Report Montana 2020 Annual Hazardous Waste Permitted Facility Report Cover Letter  
Instructions for completing the Montana 2020 TSD Facility Annual Report Form Montana 2020 Instructions for Completing the TSD Facility Annual Hazardous Waste Report Form  
2020 Facility Annual TSD Report Form Montana 2020 Annual Facility Annual TSD Report Form Annual Hazardous Waste Report for Exports of Hazardous Waste to a Foreign Country Example and Instructions Word format  

Fees: 

Annual Registration Maintenance - $200.00, if generator is maintaining large or small quantity status, and

Per Ton Fees starting January 1, 2014 and each year thereafter:

  • As-Generated Hazardous Waste:  $20.00 per ton and/or
  • Remediation Hazardous Waste:    $15.00 per ton, maximum of $25,000 per year.

Note:  The $200.00 annual registration maintenance fee covers the first 1.3 tons generated.  If as-generated and remediation wastes are both generated, then an applicable percentage of the 1.3 tons will be deducted from each waste total to calculate the amount of the fee.

Electronic Funds Transfer Payment Option Instructions

Please submit any completed forms to: 

Waste & Underground Tank Management Bureau
Hazardous Waste Section
P.O. Box 200901
Helena MT 59620-0901
.

Fee:

One-Time Registration - $225.00 only for those opting to be a large or small quantity generator, required upon submission of Notification of RCRA Subtitle C Activity Form (EPA Form 8700-12)

Electronic Funds Transfer Payment Option Instructions

General Format
Notification of RCRA Subtitle C Activity Form (EPA Form 8700-12) Notification of Regulated Waste Activity PDF document
RCRA Hazardous Waste Part A Permit Application (EPA Form 8700-23) RCRA Hazardous Waste Part A Permit Applicaton PDF document
To obtain an EPA Identification Number, complete the applicable EPA 8700 form listed above and send to the Hazardous Waste Program.  (Address listed at top of page.)
Hazardous Waste Transporter Format
Registration Form - Pages 1-2 Hazardous Waste Transporter Registration Form PDF document
Service List Form - Page 3 Hazardous Waste Transporter Service List Form PDF document
Termination Form - Page 4 Hazardous Waste Transporter Termination Form PDF document
Halogenated Solvent User Format
Halogenated Solvent User Registration Halogenated Solvent User Registration Form PDF document


Please submit any completed forms to: 

Waste & Underground Tank Management Bureau
Hazardous Waste Section
P.O. Box 200901
Helena MT 59620-0901

Please click here to download the free Adobe Reader to view PDF documents.

UST Operator Training

New:  Are you having trouble logging into TankHelper II? Please click here for instructions  

 

Tank Helper Online Training Course

Tank Helper 2

TankHelper II Testimonials

  • Larry Knowles - Property Management Supervisor, Lazydays RV "The Arizona State Department of Environmental Quality has recommended your course and indicates successful completion would satisfy training requirements for these requirements. There is no identified training available in the state of Arizona."

  • Ben Thomas - Ben Thomas Associates, Inc. "TankHelper II is a great way for Montana UST operators to learn only what's relevant and stay focused on what's important. Plus it's creative and interactive so it reinforces critical concepts. On-line learning is here to stay and I applaud the Montana DEQ for being one of the first states to venture into this exciting new territory."

  • Trent Biggers - Town Pump "TankHelper II Training was very informative & specific to our locations needs. It was also great to train on-line and at our own pace."  

  • Michael Hayes, Michael's Convenience Stores Inc. "The Montana TankHelper II online training is easy, concise and informative. The information is well thought out, presented in a user-friendly format and is easily accessible on the internet. The training is very adaptable to my locations and is an essential part of our management plan.  Thank you!"

  • Steve Scherr - Operations Training Manager, VDOT Learning Center Training Academy  "I reviewed the Montana DEQ TankHelper II Program and I found that all aspects of the program were excellent and hit the mark for those individuals responsible for fuel sites. In fact MT DEQ's program will assist in developing our program for fuel sites.  I highly recommend it. "

  • Todd Skartved - Big Bear Repair, Butte Mt - "The new tank helper for operator training was an easy step by step training module. It was very informative and would help any person with the basic elements of an UST system."

  


Montana DEQ UST Operator Training Manuals and Quizzes

      OPERATOR A

Questions? Please contact the UST Section at:

406-444-5300 or  dequstprogram@mt.gov

UST Facility/Owner Information

Non-Permitted Tanks

The Department has not issued either an operating permit/tag or a conditional operating tag for the UST systems identified in the file below. It is a substantial violation to fill these UST systems.

Please contact the department at (406) 444-5300 if you believe any tank system listed here is listed in error. List may be subject to daily changes.

DO NOT FILL List  -  updated as changes occur



 

 

NOTE: Montana law prohibits use of this information as a mailing list for unsolicited mass mailings, house calls or distributions or telephone calls. Section 2-6-109, MCA "Prohibition on distribution of mailing lists -- exceptions -- penalty," provides in relevant part as follows:

(1)(b) a list of persons prepared by the agency may not be used as a mailing list except by the agency or another agency without first securing the permission of those on the list.

(9) a person violating the provisions of subsection (1)(b) is guilty of a misdemeanor.

Proceed with downloading the following facility  information only after reading and understanding the restrictions on use of the information stated above.

Adobe Reader is required to view these files, you can download a free version online.

 

NOTE:  If a facility has not had an inspection, they will not be included in the summaries.   If you need information about one of these facilities, please go to the DEQ Data Search Tools, Underground Storage Tanks and search for this facility.

All Facilities List  was last updated June 4, 2021.

 

The individual county Facility Summary Sheets were last updated on June 25, 2021.  Please email DEQUSTPROGRAM@mt.gov or call 465-5693 if you have questions.

Facility summary sheets listed
by county
Beaverhead Flathead McCone Roosevelt
Big Horn Gallatin Meagher Rosebud
Blaine Garfield Mineral Sanders
Broadwater Glacier Missoula Sheridan
Carbon Golden Valley Musselshell Silver Bow
Carter Granite Park Stillwater
Cascade Hill Petroleum Sweet Grass
Chouteau Jefferson Phillips Teton 
Custer Judith Basin Pondera Toole
Daniels Lake Powder River Treasure
Dawson Lewis & Clark Powell Valley
Deer Lodge Liberty Prairie Wheatland
Fallon Lincoln Ravalli Wibaux
Fergus Madison Richland Yellowstone

UST Notification and Registration

UST Owners/Operators Must Notify the DEQ when:

  • Starting a New Underground Storage Tank Facility
  • Installing or Modifying Tanks or Piping
  • Changing or Amending Facility, Tank and/or Ownership Information
  • Placing a Tank into Inactive or Active Status
  • Changing the Substance in a Tank
  • Found Tanks

Facility:

Owner Changes:

Tank Product Change:

UST Owners/Operators Must Submit Annual Tank Registration Fees

  • Owners and operators of federally regulated systems which have not been properly closed according to Administrative Rules of Montana (ARM) 17.56.702 must pay an annual tank registration fee to the department for each tank owned or operated by the owner or operator. This tank registration fee is $36 for USTs equal to or less than 1,100 gallons capacity and $108 for USTs over 1,100 gallons capacity. Above-ground storage tanks (ASTs) with underground piping are subject to the same tank registration fees based on the AST size. Tank registration fees are handled by the Department of Revenue's eStop program, you may contact them at (406) 444-6900.

NOTE:  Montana law prohibits use of this information as a mailing list for unsolicited mass mailings, house calls or distributions or telephone calls. Section 2-6-109, MCA "Prohibition on distribution of mailing lists -- exceptions -- penalty," provides in relevant part as follows:

(1)(b) a list of persons prepared by the agency may not be used as a mailing list except by the agency or another agency without first securing the permission of those on the list.

(9) a person violating the provisions of subsection (1)(b) is guilty of a misdemeanor.

Proceed with downloading the following UST information only after reading and understanding the restrictions on use of the information stated above.

List of Federally Regulated UST systems, both active and/or inactive (download files do not include state regulated UST systems, e.g., underground piping associated with above ground tanks and USTs deregulated under Senate Bill 386 that do not meet the federal definition).
 
Facility tank count by active and inactive number of tanks  -  USTList.pdf (PDF format)  - last updated 6/29/2021.
 
Public Record.pdf (PDF format) - updated April 26, 2021

For site-specific UST compliance information, please contact us by email  DEQUSTPROGRAM@mt.gov or call the office at (406) 444-5300.

UST Facility Operating Permit Status

This list may be used in conjunction with the Non Permitted Tank List to determine which UST systems have a current Operating Permit and tag(s). The following tank systems are listed by county and include the status of the UST systems Operating Permit and tag(s). All regulated UST systems that have a current Operating Permit and tag may lawfully be filled. 

UST Facility Operating Permit Status List  -  last updated 6/28/2021  Please note that dates for Inactive Facilities May Not Be Accurate.
When a person buys property, they are buying responsibility for any existing contamination as well. LET THE BUYER BEWARE

For information on discovered tanks click here:  Discovered Tanks

Who does what with USTs at DEQ:

Non-regulated UST systems:

  • Farm or residential tanks (often, heating oil) for consumptive use on the property and
  • Less than 1,100 gallon capacity and
  • Installed before April 27, 1995

Even though these tanks are not regulated, any contamination they may have caused is regulated. LET THE BUYER BEWARE

Regulated UST systems:

  • Any commercial underground storage tank
  • Any farm or residential underground storage tank installed after April 27, 1995
  • Any underground piping attached to aboveground tanks

If the tanks are gone:

The possibility of contamination is the chief concern. If the USTs were registered with the department and properly closed, the UST section may have record of the tank removal and copies of the sampling results. If not, a Phase II site assessment conducted by an environmental consultant offers the best protection.

A site assessment is only as good as the sampling. If the contamination is found on the property, it won't matter what previous results indicated. The contamination will need to be cleaned up.

If the tank(s) are still there and are not operational:

If the property houses tanks that were not properly closed in place, the department will require the owner to pull them and sample for contamination.

Compliance with UST regulations should be considered when buying land. Yet the first concern remains "Is the ground or groundwater contaminated?" Compliance with closure requirements will not alter that ground truth.

If a release is discovered, compliance may impact access to Petroleum Tank Release Compensation Funds (PTRCF.) The UST section may be able to determine whether violations exist, but only the PTRCB can determine whether those violations impact eligibility.

In many cases, the UST section cannot determine from information in the file whether they regulate a tank system or whether it is in compliance. If the tank was not registered with the department or if use was discontinued before November of 1988, we may have no information about the tank at all.

When the department learns of a tank's existence we will require that it be permanently and properly closed and that the ground beneath it be sampled for contamination. The owner of the property will be responsible for cleaning up the contamination under the direction of the PRS. LET THE BUYER BEWARE

A found or non-notified tank is considered "active" until the owner asks the department in writing to place the system into inactive status. The owner then has 90 days to empty the tank and 12 months to permanently and properly close it. For more information about inactive status and the Inactive Status Form visit the Inactive Status page (scroll down to UST permitting, Closures, Inactive, and Installations and select Inactive Status, Permament Closure, and Change in Service). PTRCB eligibility requires that an owner of a newly found tank submit a permit application to the UST section to pull the tank within 30 days of discovering it.

If the tank(s) are still there and operational:

The possibility of contamination should be considered. The owner of the property is responsible for cleaning up contamination regardless of who caused it and when. A Phase II site assessment conducted by an environmental consultant offers the best protection. LET THE BUYER BEWARE

Compliance issues at operational facilities are addressed through third-party Compliance Inspections and Operating Permits. Look to see when the Operating Permit expires on the following website, UST Facility Operating Permit Status.  

It is unlawful to fill or dispense product from UST systems lacking an operating permit. In order to receive and maintain an operating permit, owners or operators of underground storage tank systems must obtain a compliance inspection of each tank system and a subsequent inspection every three years. Issuance of an operating permit is based on a compliance inspection that indicates that the UST is in compliance with Montana's operation and maintenance requirements.

Compliance inspections will be conducted by private-sector inspectors licensed by DEQ. State and local UST program staff may conduct inspections as part of their oversight duties, or may conduct inspections to follow-up on complaints.

NOTE: Routine line- and tank-tightness tests and corrosion-prevention system tests are also needed.

State of Montana Underground Storage Tank Applications https://deq.mt.gov/files/land/UST/Documents/PDFfiles/USTPermit_Application.pdf

 

 

 

Issuance of an operating permit is based on a compliance inspection that indicates that the UST is in compliance with Montana's operation and maintenance requirements.

Licensed private inspectors conduct the compliance inspections of operating underground storage tanks to determine compliance with spill, overfill, corrosion protection, release detection and recordkeeping requirements. They also verify that all tanks are registered, have the proper tags and operating permit, and meet upgrade requirements.

The department and designated local governmental unit inspectors will provide oversight of the licensed compliance inspectors.


Compliance Inspector Reference Manual

Compliance Inspector Reference Manual
 

Duties of Compliance Inspectors

Pre-Inspection

The inspector should be knowledgeable of a site before conducting the inspection. Important background information includes such things as

  1. the exact site location,
  2. the type of equipment in place (how many tanks, suction or pressure piping, type of overfill devices, etc.),
  3. compliance history,
  4. responsible party (owner vs. operator),
  5. fee and registration status,
  6. permit review/fee status (if applicable), and
  7. on-site contact (essential for un-manned sites).

Inspection

All regulated underground storage tank facilities must be inspected every 3 years. The principal responsibilities of the compliance inspector during the inspection are to assess compliance with the following regulatory requirements:

  1. UST registration/notification/tags;
  2. UST upgrade requirements;
  3. Leak detection system operation, maintenance, testing, recordkeeping; and
  4. Corrosion system operation, maintenance, testing and recordkeeping.

Each inspector will be initially provided with several inspection forms. The inspection form will also be provided in electronic format. In addition to completing the inspection form, the inspector is expected to educate the owner or operator so that the facility's compliance is improved.  The inspector must review the inspection form with the owner/operator and discuss any violations or problem areas.

Post Inspection

Following an inspection, compliance inspectors must:

  1. Immediately notify the Department of any release discovered during the inspection;
  2. Identify methods to correct violations;
  3. Obtain the owner's or operator's signature on the inspection report; and
  4. Provide a copy of the inspection report to the DEQ within 10 days of the inspection date.

DEQ will review the inspection report and determine whether a violation has occurred. The inspector is expected to provide all reports to DEQ for this determination. The inspector may fix the deficiency and note it has been fixed on the inspection report. Inspections must be conducted at least 90 days before the expiration date of the operating permit to allow time to correct deficiencies. This correction timeframe should allow Petrofund eligibility to remain intact in most cases.

Note:   Montana law prohibits use of this information as a mailing list for unsolicited mass mailings, house calls or distributions or telephone calls. Section 2-6-109, MCA "Prohibition on distribution of mailing lists - - exceptions - - penalty," provides in relevant part as follows:

  • (1)(b) a list of persons prepared by the agency may not be used as a mailing list except by the agency or another agency without first securing the permission of those on the list.
  • (9) a person violating the provisions of subsection (1)(b) is guilty of a misdemeanor.

Disclaimer:   This list was prepared as an information source only. No endorsement of these firms or their services is given or implied. There may be other firms offering these services which at the date of this listing were not known by this agency.

Name City/State Company Name Work Phone
Cathey, Brent Billings, MT CORRPRO/CP Service (406) 248-7170
Lunder, Robert Billings, MT CORRPRO/CP Service (406) 248-7170
Salisbury ,Wayne Billings, MT CORRPRO/CP Service (406) 248-7170
Burke, Dennis Seattle, WA RCC Burke Associates (206) 528-3838
Iba, Mike Glendive, MT IBA Corrosion Control  (406) 365-6058
Engh, Robert Laurel, MT Northland Corrosion Services (406) 628-2213
Hardy, Lloyd Rigby, ID L & R Technologies (208) 745-8393
  Woodinville, WA Norton Corrosion Ltd Inc (425) 483-1616

If you would like to have your name added, removed or modified on this list, please email the UST Program or call the Montana UST Program at (406) 444-5300.

UST Permitting, Closures, Inactive, and Installations

A permit is required from DEQ for the installation or closure of underground storage tanks.

The following UST activities in Montana require a permit from DEQ:

  • Removing, closing in place, or changing in service of underground storage tanks or piping (product or vent)
  • Working on an UST system that requires excavation or cutting the concrete. This includes work on tanks, piping(product or vent), corrosion protection, automatic tank gauge (ATG), interstitial sensors, monitoring wells, lining, proving structural integrity, risers, pipes, spill and overfill.
  • Installing an overfill device that does not require excavation or cutting concrete(i.e. drop tube shut off, overfill alarm when conduit is stubbed in, and vent ball overfill device (ball vent float valves, etc.) when extractor assembly is stubbed in). NOTE: replacing an existing overfill device with the same type of device requires a permit only if cutting concrete or excavation is required.
  • Replacing or repairing a damaged spill bucket.
  • Installing a drop tube. Note: replacing a drop tube requires a permit only if cutting the concrete or excavation is required.
  • Reconstructing, abandoning, or closing monitoring wells.
  • Installing an ATG (in tank leak detection device) or interstitial sensors, whether or not the conduit and riser were previously installed.
  • Installing heat-shrink sleeves or water-tight boots to riser or flex connectors for corrosion protection.
  • Installing off-set sleeves to risers for corrosion protection. (Offset sleeves do not provide corrosion protection for flex connectors.)
  • Installing anodes on riser or flex connectors for corrosion protection.
  • Installing additional anodes or an impressed-current system on an existing UST system.
  • Installing dri-sump tubing and test equipment.
  • Providing an internal inspection of a tank.
  • Replacing a UST system component with a different model component.
  • Extending an existing vent standpipe.

The following UST activities do not require a permit:

  • Replacing a defective mechanical line leak detector with the same type device(i.e. replace screw-in mechanical line leak detector with another screw-in mechanical line leak detector.)
  • Testing tank or line tightness testing.
  • Testing line leak detector functionality.
  • Testing piping to determine if it is standard or European style suction.
  • Replacing an existing drop tube. (Requires a permit to install a new drop tube or if excavation is required).
  • Testing sump or interstitial sensor functionality.
  • Testing of ATG functionality by factory trained technician.
  • Replacing a drop tube overfill device, a vent ball (ball vent float,etc.) valve overfill device via an existing overfill alarm This does not include installing a vent ball extractor assembly. (Requires a permit to change the type of overfill device or if excavation is required.)
  • Testing of a CP system by a qualified CP tester.
  • Adjusting of a CP system rectifier by a CP tester.
  • Replacing a sensor with the same model of sensor.

These are the procedures owners/operators must follow to remove or close underground storage tanks and piping in Montana.

old tank coming out of the hole
  1. Be sure that the tanks are registered with the Department. The owner/operator must be current for payment of registration fees before the permit will be issued.
  2. Obtain the services of a licensed underground storage tank remover unless the owner/operator plans to close/remove the underground storage tank/piping himself.
  3. A permit application form must be completed by either the owner/operator or the licensed remover, and be returned along with the appropriate permit review fee and inspection fee (if required) to DEQ at least 30 days before the closure/removal is scheduled. If all of the information requested on the permit application is not provided or the proper fees have not been enclosed with the application, DEQ will return the application or place it in an on-hold status. A returned or on-hold application may result in delay in the permitting process.
  4. The permit fee can be calculated from the following fee schedule. Please enclose the appropriate fee with the application.

    All tanks . . . . . . . . . . . . . . $100/permit + $.02 x total gallons closed
    (Includes all commercial tanks, even if under 1,100 gallons, including used oil tanks)

    Piping only . . . . . . . . . . . . . $50 under 50 feet, $100 greater than 50 feet

    Maximum permit fee . . . . . . . . . . . . . . . . $750

    Please make checks and money orders payable to the Department of Environmental Quality.
     
  5. Owners/operators who are closing/removing their own tanks must arrange for the local licensed inspector or a Department inspector to inspect their work. An inspection fee deposit of $90 must accompany the application and the inspection dates must be tentatively scheduled on the application. The fee deposit is for a two-hour inspection. The actual inspection fee will be the fee deposit plus $45 per-hour for all hours over two hours, including travel time and inspection time
     
  6. After the DEQ reviews and approves the application, the owner/operator will be issued a permit. The permit authorizes the tank/piping removal as described in the application; however, the permit will have special conditions written on it that must be followed. A permit must be issued before removal/closure work starts.

    Part of the tank or piping removal/closure process includes conducting a site assessment to determine whether a release has occurred. This requires collecting soil or water samples that must be sent to a laboratory.  Specific requirements will be included on the permit.
  7. In addition to meeting the EPA and Montana requirements for removals/closures, the procedures must also meet all requirements set forth in the Uniform Fire Code and be approved by the state and local fire officials. Tanks must be removed unless fire officials permit filling them in-place. If removal of the tank system is physically impossible or threatens adjoining structures, fire officials may permit filling the tanks and pipes in-place. Fire official approval is necessary prior to DEQ issuing a permit. A permit and site assessment are required regardless of closure method.
  8. A permit expires six months from its date of issuance.  If the work cannot be completed within that time frame, the department may issue a written extension upon request from the installer/remover.

If you would like more information concerning permanent closure of underground storage tanks and piping, or have questions regarding the permit application procedure, email the UST Program, or call the Montana UST Program at (406) 444-5300.

To Place an Active UST system into Inactive Status

An owner or operator can place an UST system into Inactive Status by notifying the UST Section on the appropriate Notification of Inactive Status for Underground Storage Tanks Systems form that they have discontinued use of the system and wish the system to be considered inactive.

In addition, an owner/operator must:

  • Empty the tank to less than 1 inch of product (release detection is required until tank has less than 1 inch of product),
  • Cap and secure all product lines, sumps, manways, and ancillary equipment,
  • Leave vent lines open and functioning,
  • Continue to maintain corrosion protection (if applicable),
  • Continue to pay annual tank registration fees,
  • Continue to demonstrate financial responsibility by having the completed form on file at the facility,
  • Continue to have a trained Class A, Class B, and Class C Operator, and 
  • Conduct an inactive tank inspection every three years.
Rules regarding Inactive Status, Permanent Closure, and Change in Service can be found in Chapter 56, Subchapter 7, Administrative Rules of Montana

To Return an Inactive Tank System to Active Status

If an UST system has a valid Operating Permit and is in Inactive Status for 12 Months or Less

  • An owner or operator must give the department 30 days advance written notice of intent to return the UST to Active Status.

If an UST system has a valid Operating Permit and is in Inactive Status for 12 Months or More

  • An owner or operator must give the department 30 days advance written notice of intent to return the UST to Active Status, and;
  • Request a One Time Fill Permit
  • Perform a precision tank tightness test, line tightness tests and functionality tests of all mechanical and electronic release detection equipment, and submit all test results to the department. The owner or operator may return the UST system to active status only after the receipt of notice from the department indicating that the test results are satisfactory.

If an UST system does not have a valid Operating Permit and no more than 12 Months have passed since the expiration date of the last operating permit issued for the UST system

  • An owner or operator must give the department 30 days advance written notice of intent to return the UST to Active Status, and;
  • Obtain a Conditional Operating Permit from the department (expires 180 days later), and;
  • Have a compliance inspection conducted between 90 and 120 days after the Conditional Operating Permit is issued.

If an UST system does not have a valid Operating Permit and more than 12 Months have passed since the expiration date of the last operating permit issued for the UST system

  • An owner or operator must give the department 30 days advance written notice of intent to return the UST to Active Status, and;
  • Request a One Time Fill Permit for testing purposes only, and;
  • Perform a precision tank tightness test, line tightness tests and functionality tests of all mechanical and electronic release detection equipment, and submit all test results to the department. The owner or operator may return the UST system to active status only after the receipt of notice from the department indicating that the test results are satisfactory, and;
  • Obtain a Conditional Operating Permit from the department (expires 180 days later), and;
  • Have a compliance inspection conducted between 90 and 120 days after the Conditional Operating Permit is issued.

If an UST system does not have a valid Operating Permit and more than 3 years have passed since the expiration date of the last operating permit, and continuous operating and maintenance of corrosion protection cannot be demonstrated

  • An owner or operator must give the department 30 days advance written notice of intent to return the UST to Active Status, and;
  • Request a One Time Fill Permit for testing purposes only, and;
  • Show that the UST is structurally sound based upon a program-approved integrity assessment, and;
  • Perform a precision tank tightness test, line tightness tests and functionality tests of all mechanical and electronic release detection equipment, and submit all test results to the department. The owner or operator may return the UST system to active status only after the receipt of notice from the department indicating that the test results are satisfactory, and;
  • Obtain a Conditional Operating Permit from the department (expires 180 days later), and;
  • Have a compliance inspection conducted between 90 and 120 days after the Conditional Operating Permit is issued.

To Place a Tank System into Permanent Closure

At least 30 days before beginning permanent closure

  • An owner or operator must give the department advance written notice of intent to to permanently close. A closure permit application is an acceptable notification;
  • A closure permit may be obtained at DEQ, by calling (406)-444-5300, or email:  DEQUSTPROGRAM@mt.gov, and;
  • Empty and clean the UST by removing all liquids and accumulated sludge. All tanks and connected piping must be removed from the ground or, if approved by the department, filled with an inert solid material. The department does not generally approve closure in place unless removal from the ground endangers adjacent structures, and;
  • Conduct a site assessment in accordance with ARM 17.56.703.

Change in Service

Continuing use of an UST system to store a non-regulated substance is considered a change in service. After a change in service, the tank is no longer regulated. No further annual registration fees will be assessed. No compliance inspection is required

  • To complete this procedure owners or operators must notify the department at least 30 days before making a change in service, and;
  • Empty and clean the UST system by removing all liquid, accumulated sludge and all combustible and flammable vapors, and;
  • Conduct a site assessment in accordance with ARM 17.56.703.
  1. Obtain the services of a licensed installer, unless the owner/operator will conduct their own installation.
  2. A permit application form must be completed by either the owner/operator or the licensed installer and returned with the appropriate permit review fee, to DEQ at least 30 days before the installation is scheduled to begin. If all of the information requested on the permit application is not provided or the permit fee has not been enclosed with the application, DEQ may return the application or place it on hold until all information is received. A returned or on-hold application will result in a delay in the permitting process.

    The permit fee can be calculated from the following fee schedule. Please enclose the appropriate fee with the application.

    All tanks . . . . . . . . . . . $100/permit + $.02 x total gallons installed and closed
    (Includes all commercial tanks, even if under 1,100 gallons, including used oil tanks)

    Piping only . . . . . . . . $50/50 feet, greater than 50 feet $100.00 unless piping permit is associated with a major permit application

    Minor Permit Applications. . . . . . . .$50 unless associated with a major permit application

    Repairs, modifications, lining, vapor or groundwater monitoring wells at existing installation, cathodic protection at existing installation, leak investigation. . . $100/permit

    Maximum permit fee . . . . . . . . . . . . . . . . . . . . . . . $750

    Please make all checks and money orders payable to the Department of Environmental Quality - UST Section.
  3. Owners/operators who are installing their own tanks and/or piping must arrange for a Department inspector to inspect their work. An inspection fee deposit of $90 must accompany the application and inspection dates must be tentatively scheduled on the application. The fee deposit is for a 2 hour inspection. The actual inspection fee will be the fee deposit plus a $45 per hour fee for all hours over 2 hours, including travel time and inspection time.
  4. After the Department approves the application, the owner/operator will be issued a permit. The permit authorizes the installation of the tank/piping as described in the application; however, the permit may have special conditions written on it that must also be followed. A permit must be issued by the Department before installation begins.
  5. A permit expires six months from its date of issuance.  If the work cannot be completed within that time frame, the department may issue a written extension upon request from the installer/remover.

Other considerations for installation:

  1. The tank and piping system must meet all the design and leak detection requirements of the Montana Underground Storage Tank Rules and Regulations.  A permit application for the modification or installation of a cathodic protection system must be accompanied by designs prepared by a corrosion expert.
  2. The tank and piping system must be tested and installed in accordance with Division VI of the Uniform Fire Code.
  3. Installation procedures must also comply with all local permit requirements and local ordinances. Check with local health and fire departments prior to completing the permit application.
  4. If the proposed installation is in an environmentally sensitive area (in, or close to, groundwater or porous soils, near private or public water wells, etc.), we recommend that the best available leak prevention systems be installed. This will help minimize the potential liability and cost of a leak in the future. These systems could include the use of double walled tanks, vaults or excavation pit liners with monitoring well and leak detectors.

If you need more information concerning the installation or modification of underground storage tanks and piping or have questions regarding the permit application procedure,  email the UST Program, or call the Montana UST Program at (406) 444-5300.

These are the procedures owners/operators must follow to obtain approval to install or modify underground storage tanks and piping in Montana.

1. Obtain the services of a licensed installer, unless the owner/operator will do their own installation.

2. A permit application form must be completed by either the owner/operator or the licensed installer and returned with the appropriate permit review fee, to DEQ at least 30 days before the installation is scheduled to begin. If all of the information requested on the permit application is not provided or the permit fee has not been enclosed with the application, DEQ may return the application or place it on hold until all information is received. A returned or on-hold application will result in a delay in the permitting process.

The permit fee can be calculated from the following fee schedule. Please enclose the appropriate fee with the application.

  • All tanks . . . . . . . . . . . $50/permit + $.01 x total gallons installed and closed (Includes all commercial tanks, even if under 1,100 gallons, including used oil tanks)
  • Piping only . . . . . . . . $25/50 feet, $200 maximum
  • Repairs, modifications, lining, vapor or groundwater monitoring wells at existing installation, cathodic protection at existing installation, leak investigation. . . $50/permit
  • Maximum permit fee . . . . . . . . . . . . . . . . . . . . . . . $750

Please make all checks and money orders payable to the Department of Environmental Quality.

3. Owners/operators who are installing their own tanks and/or piping must arrange for a Department inspector to inspect their work. An inspection fee deposit of $90 must accompany the application and inspection dates must be tentatively scheduled on the application. The fee deposit is for a 2 hour inspection. The actual inspection fee will be the fee deposit plus a $45 per hour fee for all hours over 2 hours, including travel time and inspection time.

After the Department approves the application, the owner/operator will be issued a permit allowing the installation. The permit authorizes the installation of the tank/piping as described in the application; however, the permit may have special conditions written on it that must also be followed. A permit must be issued by the Department before installation begins.

Other considerations for installation:

  • The tank and piping system must meet all the design and leak detection requirements of the Montana Underground Storage Tank Rules and Regulations.  A permit application for the modification or installation of a cathodic protection system must be accompanied by designs prepared by a corrosion expert.
  • The tank and piping system must be tested and installed in accordance with Division VI of the Uniform Fire Code.
  • Installation procedures must also comply with all local permit requirements and local ordinances. Check with local health and fire departments prior to completing the permit application.
  • If the proposed installation is in an environmentally sensitive area (in, or close to, groundwater or porous soils, near private or public water wells, etc.), we recommend that the best available leak prevention systems be installed. This will help minimize the potential liability and cost of a leak in the future. These systems could include the use of double walled tanks, vaults or excavation pit liners with monitoring well and leak detectors.

If you need more information concerning the installation or modification of underground storage tanks and piping or have questions regarding the permit application procedure,  email the UST Program, or call the Montana UST Program at (406) 444-5300.