THE WYOMING Storage Tank Program

THE WYOMINGTHE WYOMING

Storage Storage Tank ProgramTank Program

BEFORE THE PROGRAMBEFORE THE PROGRAM

Tanks were installed without corrosion Tanks were installed without corrosion protectionprotection

Filling was done without concern about Filling was done without concern about overfillingoverfilling

Lines often leaked without being detected Lines often leaked without being detected because inventory was not carefully because inventory was not carefully checkedchecked

RESULTING IN:RESULTING IN: Inventory losses due to leakageInventory losses due to leakage Explosions caused by vaporsExplosions caused by vapors Contaminated water suppliesContaminated water supplies Vapors in basements, storm sewers and Vapors in basements, storm sewers and

utilitiesutilities Cancer and other serious health problemsCancer and other serious health problems Financial Ruin for those responsible for TanksFinancial Ruin for those responsible for Tanks

The Wyoming Water Quality Division, Storage Tank Program, 122 West 25th Street, The Wyoming Water Quality Division, Storage Tank Program, 122 West 25th Street, Cheyenne, WY 82002 (307) 777-7095 and (307) 777-5973 (FAX) and Cheyenne, WY 82002 (307) 777-7095 and (307) 777-5973 (FAX) and [email protected]@missc.state.wy.us

FOR MORE INFORMATION...

You will find references to Wyoming You will find references to Wyoming State regulations and statutes in State regulations and statutes in

this space >>this space >> Each of those references has a link Each of those references has a link

to the actual text of those rules and to the actual text of those rules and statutes. On the next screen you statutes. On the next screen you will find the “Requirements for will find the “Requirements for Underground Storage Tanks”. Each Underground Storage Tanks”. Each of those requirements has a link to of those requirements has a link to allow you to start viewing at any of allow you to start viewing at any of them. This presentation is them. This presentation is designed to be viewed without designed to be viewed without sound. sound.

Requirements for Requirements for Underground Storage Underground Storage TanksTanks

Annual Registration Annual Fee Leak Detection for all Tanks Leak Detection for all Connected Lines Minimum Site Assessment Financial Responsibility Corrosion Protection Spill Prevention Equipment Overfill Prevention Equipment Permanent Abandonment of Out of Service Tanks Reporting and Investigation of Suspected Releases

REQUIRED BY ARTICLE 14, ENVIRONMENTAL QUALITY ACT AND CHAPTER 17

Annual Annual RegistrationRegistrationName and Address of Name and Address of

Owner/OperatorOwner/OperatorLocation, size, & types of Location, size, & types of

TanksTanksType of Substance StoredType of Substance Stored

The Wyoming Water Quality Division, AUST Program, 122 West 25th Street, Cheyenne, The Wyoming Water Quality Division, AUST Program, 122 West 25th Street, Cheyenne, WY 82002 (307) 777-7095 (307) 777-5973 (FAX) and [email protected] 82002 (307) 777-7095 (307) 777-5973 (FAX) and [email protected]

FOR MORE INFO...

REQUIRED BY W.S. 35-11-1425 and CHAPTER 17, SECTION 7 (B)

Tank FeesTank Fees Underground tanks: Underground tanks:

• Owners pay $200.00 per tank per yearOwners pay $200.00 per tank per year Out of Service Tanks: Out of Service Tanks:

• Owners pay until removedOwners pay until removed Aboveground tanks under 5000 gallons:Aboveground tanks under 5000 gallons:

• Owners pay $50.00 per tank per yearOwners pay $50.00 per tank per year Aboveground tanks over 5000 gallons:Aboveground tanks over 5000 gallons:

• Owners pay $200.00 per tank per yearOwners pay $200.00 per tank per year

REQUIRED BY W.S. 35-11-1425

Leak DetectionLeak Detection At least one method of leak At least one method of leak

detection is required for the detection is required for the Underground Storage Tank itself.Underground Storage Tank itself.

– And…And…

At least one method of leak At least one method of leak detection is required for any detection is required for any underground lines attached to the underground lines attached to the tank.tank.

Leak Detection Methods - Leak Detection Methods - Tanks Tanks

Manual Tank Gauging Inventory Control Tank Tightness Testing Automatic Tank Gauging Statistical Inventory Reconciliation Interstitial Monitoring Vapor Monitoring Wells Groundwater Monitoring Wells

REQUIRED BY CHAPTER 17 SECTION 14(a)

deq:

Need a Hotlink on each of these

deq:

Need a Hotlink on each of these

MANUAL TANK GAUGINGMANUAL TANK GAUGING

Manual Tank Gauging or Manual Inventory Manual Tank Gauging or Manual Inventory Control alone for tanks under 1000 gallonsControl alone for tanks under 1000 gallons

Manual Inventory Control & Tank Manual Inventory Control & Tank Tightness Testing for tanks of 1000 to Tightness Testing for tanks of 1000 to 2000 gallons2000 gallons

Tank Tightness TestingTank Tightness Testing• OverfillOverfill• UnderfillUnderfill• TracerTracer

REQUIREMENTS FOR THIS METHOD ARE IN CHAPTER 17 SECTION 16(b)

MANUAL TANK MANUAL TANK GAUGINGGAUGING

Requires Shut-in of Tank for a minimum of Requires Shut-in of Tank for a minimum of 36 hours and up to 58 hours depending on 36 hours and up to 58 hours depending on size of the tanksize of the tank

Stick Readings taken twice at the beginning Stick Readings taken twice at the beginning of the shut-in period and twice at the end of of the shut-in period and twice at the end of the shut-in periodthe shut-in period

Stick Readings must be accurate to 1/8”Stick Readings must be accurate to 1/8” Must be done once a weekMust be done once a week Usually done on small waste oil tanksUsually done on small waste oil tanks

REQUIREMENTS FOR THIS METHOD ARE IN CHAPTER 17 SECTION 16 (b)

INVENTORY INVENTORY CONTROLCONTROL

At least seven stick readings per month At least seven stick readings per month and one stick reading for every day of and one stick reading for every day of active useactive use

Deliveries preceded by two stick Deliveries preceded by two stick readings and ended with two stick readings and ended with two stick readingsreadings

Reconciled both daily and monthlyReconciled both daily and monthly Inventory must balance within 1% of Inventory must balance within 1% of

inventory flow through plus 130 gallonsinventory flow through plus 130 gallons Stick readings must be accurate to 1/8”Stick readings must be accurate to 1/8”

REQUIREMENTS FOR THIS METHOD ARE IN CHAPTER 17 SECTION 16 (a)

INVENTORY INVENTORY CONTROLCONTROL

If you are using inventory control in If you are using inventory control in conjunction with an automatic tank gauge, conjunction with an automatic tank gauge, use the automatic tank gauge instead of use the automatic tank gauge instead of sticking the tank manually.sticking the tank manually.

If you have a point of sale cash register, If you have a point of sale cash register, use the sales numbers from that system, use the sales numbers from that system, converted to gallons.converted to gallons.

You must close both your sales numbers You must close both your sales numbers and your delivery numbers at the same and your delivery numbers at the same time each day.time each day.

TANK TIGHTNESS TESTINGTANK TIGHTNESS TESTING

Provided by an outside companyProvided by an outside company Types:Types:

• UnderfillUnderfill• OverfillOverfill• UllageUllage• Tracer Tight SurveysTracer Tight Surveys

Underfill Tank Tightness Underfill Tank Tightness TestsTests

In the Under fill method, a probe of some type is inserted into the tank to accurately measure product level during a shut-in period.

The tank is first filled to near its capacity...

Overfill Tank Tightness Overfill Tank Tightness TestsTests

In the Over fill method, a tube is connected to the tank to accurately measure product level during a shut-in period.

The tank is first filled to the top...

Ullage Tank Tightness Ullage Tank Tightness TestsTests

In the Ullage method, the tank is pressurized with nitrogen with all the vents and product lines blocked. A microphone inside the tank is used to listen for noise caused by leaks.

The ullage is the space in the tank above the product level...

Tracer Tight Tank SurveysTracer Tight Tank Surveys

About a week later, the tester returns to try and find the tracer in the soils around tank tanks and/or lines.

In the Tracer Tight method the product in the tank is first “inoculated” with a very volatile organic tracer, which is not normally present in fuel.

Automatic Tank Automatic Tank GaugesGauges

Measure only the volume of product in Measure only the volume of product in the tank. Cannot determine if lines the tank. Cannot determine if lines are intact and cannot detect holes are intact and cannot detect holes above the product surfaceabove the product surface

Two Types:Two Types:• Earlier Types shut-in the tank once a dayEarlier Types shut-in the tank once a day• Continuous Statistical Leak DetectionContinuous Statistical Leak Detection

Must detect a 0.2 gallons per hour leakMust detect a 0.2 gallons per hour leak Three Types of Detectors:Three Types of Detectors:

REQUIREMENTS FOR THIS METHOD ARE IN CHAPTER 17 SECTION 16 (d)

AutomaticAutomatic Tank Tank GaugesGauges

Product Level

Magnetic Float on Rigid Tape

Magnets

Sensor Detects Torque in Tape to Float



Sensor Measures Sensor Measures Buoyancy ForceBuoyancy Force

Glass Float Shaped to Account for the Round Tank

Product Level



Product Level

Ultrasonic Ultrasonic TransmitterTransmitter

Sensor Receives Ultrasonic Sensor Receives Ultrasonic Wave and Determines Wave and Determines Product LevelProduct Level


Automatic Tank GaugesAutomatic Tank Gauges

You must haveYou must have one one passing result for each passing result for each month...month...

You must keep those records for three years.You must keep those records for three years. The passing result should be the highest The passing result should be the highest

passing result for the month.passing result for the month. If you cannot obtain one passing result in a If you cannot obtain one passing result in a

month, you must declare as suspected month, you must declare as suspected release. release.

You must also do You must also do Inventory Control or or another equivalent method along with an another equivalent method along with an ATG.ATG.


Statistical Inventory Statistical Inventory ReconciliationReconciliationREQUIREMENTS FOR THIS METHOD ARE IN CHAPTER 17 SECTION 16 (h)

This method requires that all of the measurements made for Manual Inventory Control be taken on a daily basis…...

And… the results are sent out to a Consulting firm for statistical analysis by a qualified professional who uses a third party verified method.

Statistical Inventory Statistical Inventory ReconciliationReconciliationREQUIREMENTS FOR THIS METHOD ARE IN CHAPTER 17 SECTION 16 (h)

If the SIR Company cannot produce a conclusive pass or fail, they report an inconclusive result...

If you receive an inconclusive result, you must audit your records and resubmit your records to the SIR Company to attempt to achieve a conclusive result.

If you receive an inconclusive result, and that cannot be reconciled, you don’t have a valid leak detection method for that month

Interstitial MonitoringInterstitial Monitoring

Monitoring of the space Monitoring of the space between the two shells between the two shells of a double wall tank of a double wall tank for both products and for both products and waterwater

REQUIREMENTS FOR THIS METHOD ARE IN CHAPTER 17 SECTION 16 (g)

Interstitial MonitoringInterstitial Monitoring

If your interstitial monitoring device indicates that product has escaped from your tank, you must declare a suspected release.

If your interstitial space is disabled because it is full of rainwater or a cable is broken, you do not have a valid leak detection method for that month.

REQUIREMENTS FOR THIS METHOD ARE IN CHAPTER 17 SECTION 16 (g)

Vapor Monitoring Vapor Monitoring WellsWells

Tank BasinTank BasinTankTank

Water Water TableTable

Monitoring WellsMonitoring Wells

Wells must be monitored Wells must be monitored for vapors at least monthlyfor vapors at least monthly

REQUIREMENTS FOR THIS METHOD ARE IN CHAPTER 17 SECTION 16 (e)

Vapor Monitoring WellsVapor Monitoring Wells

Cannot be used on any site which is Cannot be used on any site which is already contaminated in such a way as already contaminated in such a way as to prevent detection of any new release.to prevent detection of any new release.

Unfortunately, vapor monitoring wells Unfortunately, vapor monitoring wells tend to be a one shot deal. Once they tend to be a one shot deal. Once they detect a leak, it may not be possible to detect a leak, it may not be possible to clean them up sufficiently that they can clean them up sufficiently that they can be used to detect a second leak later.be used to detect a second leak later.

Groundwater Groundwater Monitoring WellsMonitoring Wells

Tank BasinTank BasinTankTank

Water Water TableTable

Monitoring WellsMonitoring Wells

Wells must be monitored at Wells must be monitored at least monthly for free productleast monthly for free product

REQUIREMENTS FOR THIS METHOD ARE IN CHAPTER 17 SECTION 16 (f)

Leak Detection Leak Detection Methods - LinesMethods - Lines

Pressurized LinesPressurized Lines• Pressure Check of the Lines - AnnuallyPressure Check of the Lines - Annually• Automatic Line Leak Detector (ALLD)Automatic Line Leak Detector (ALLD)• Annual Check of the ALLDAnnual Check of the ALLD

Suction LinesSuction Lines Exposed LinesExposed Lines

The Wyoming Water Quality Division, AUST Program, 122 West 25th Street, Cheyenne, WY 82002 (307) 777-7095 (307) 777-5973 (FAX) and [email protected]

FOR MORE INFORMATION...

REQUIRED BY CHAPTER 17 SECTION 14 (b)

PRESSURIZED LINESPRESSURIZED LINES

All systems which use pressurized lines All systems which use pressurized lines must have an automatic line leak must have an automatic line leak detector (ALLD)detector (ALLD)

REQUIRED BY CHAPTER 17 SECTION 14 (b) and SECTION 17

ALLDSOLENOID VALVE

ALLD’s only detect leaks between the solenoid valve in the dispenser and the ALLD itself

All ALLD’s must detect any leak of 3 gallons per hour at 10 psi within one hour

Tank

SUCTION LINESSUCTION LINES

All systems which use suction pumps AND All systems which use suction pumps AND have no pressure on the lines. These systems have no pressure on the lines. These systems cannot have to have an (ALLD)cannot have to have an (ALLD)

SEE CHAPTER 17 SECTION 14 (b)(ii)

Systems which have only one check valve are exempt from release detection requirements (Exempt Suction)Systems which have a second check valve are not exempt (US Suction)

Tank

CHECK VALVE

Minimum Site Minimum Site AssessmentAssessment

Number of Drill holes or Test Pits depends on size Number of Drill holes or Test Pits depends on size and number of tanksand number of tanks

May be met during removal or replacement of a tankMay be met during removal or replacement of a tank

Tanks installed before Sept 22, 1988 AND in use Tanks installed before Sept 22, 1988 AND in use after September 22, 1988 were required to have an after September 22, 1988 were required to have an MSA by December 22, 1998MSA by December 22, 1998

Tank Basin Drill hole or test pit

REQUIREMENTS FOR MSA’S ARE IN CHAPTER 17 SECTION 27

Financial Financial AssuranceAssurance

$1,000,000 liability per release$1,000,000 liability per release• (Federal Requirement)(Federal Requirement)• $30,000 deductible$30,000 deductible

Compliance with the AUST Program Compliance with the AUST Program makes a site eligible for the:makes a site eligible for the:• Wyoming Corrective Action AccountWyoming Corrective Action Account• Wyoming Financial Responsibility Wyoming Financial Responsibility

AccountAccount

REQUIRED BY W.S. 35-11-1428

CORRECTIVE ACTION CORRECTIVE ACTION ACCOUNTACCOUNT

Pays 100% of the cleanup cost of a Pays 100% of the cleanup cost of a release from a regulated tank systemrelease from a regulated tank system

The DEQ contracts directly for cleanupThe DEQ contracts directly for cleanup No deductibleNo deductible Major funding from a set aside equal Major funding from a set aside equal

to 1 cent per gallon of fuel taxesto 1 cent per gallon of fuel taxes Wyoming is the only State with this Wyoming is the only State with this

type of coverage.type of coverage.

SET UP BY W.S. 35-11-1425

Financial Responsibility Financial Responsibility AccountAccount

Pays only after a judgement is Pays only after a judgement is rendered against the owner or rendered against the owner or operator of the siteoperator of the site

Pays the first $1,000,000 of any Pays the first $1,000,000 of any judgementjudgement

$30,000 deductible$30,000 deductible Meets the Federal Financial Meets the Federal Financial

Assurance RequirementAssurance Requirement

SET UP BY W.S. 35-11-1427

1998 UPGRADES1998 UPGRADES

Overfill ProtectionOverfill ProtectionSpill PreventionSpill PreventionCorrosion Corrosion PreventionPrevention

REQUIRED BY CHAPTER 17, SECTION 5 AND SECTION 6

Overfill Prevention Overfill Prevention EquipmentEquipment

Three Types of Overfill Prevention:Three Types of Overfill Prevention:

Butterfly Valve in Fill TubeButterfly Valve in Fill Tube

Check Valve in Vent LinesCheck Valve in Vent Lines

Automatic Alarm SystemAutomatic Alarm System

SEE CHAPTER 17 SECTION 5 (C)(I)(B)

Spill Prevention Spill Prevention EquipmentEquipment

TankTank

FILL TUBEFILL TUBESPILL BUCKETSPILL BUCKET

A spill bucket is designed to catch spills during the filling of the tank

SEE CHAPTER 17 SEC 5(C)(I)(A)

Corrosion Corrosion PreventionPrevention Non Corrodable Tanks and LinesNon Corrodable Tanks and Lines

Steel Tanks and LinesSteel Tanks and Lines• Sacrificial anode cathodic protectionSacrificial anode cathodic protection• Impressed Current cathodic protectionImpressed Current cathodic protection• Fiberglass CladingFiberglass Clading• LiningLining

SEE CHAPTER 17 SEC 5(A)

Corrosion Corrosion PreventionPreventionNon Corrodable TanksNon Corrodable Tanks

NON-CORRODABLE TANKS NON-CORRODABLE TANKS ARE MADE ENTIRELY OF ARE MADE ENTIRELY OF FIBERGLASS REINFORCED FIBERGLASS REINFORCED PLASTIC PLASTIC OR...

SEE CHAPTER 17 SEC 5 (A)(I)

THEY ARE MADE OF STEEL THEY ARE MADE OF STEEL WHICH HAS BEEN WHICH HAS BEEN COMPLETELY CLAD WITH A COMPLETELY CLAD WITH A SECOND TANK MADE OF SECOND TANK MADE OF FIBERGLASS REINFORCED FIBERGLASS REINFORCED PLASTICPLASTIC

(COMPOSIT STEEL/FIBERGLASS TANK)

Corrosion PreventionCorrosion PreventionComposite Steel/Fiberglass Composite Steel/Fiberglass TanksTanks

STEEL TANK SHELLSTEEL TANK SHELL

FIBERGLASS SHELLFIBERGLASS SHELL

Composite Tanks may or Composite Tanks may or may not have an may not have an interstitial space between interstitial space between the steel and the fiberglass the steel and the fiberglass shellsshells

The fiberglass shell is more than a coating, it is a complete tank in and of itself.

Corrosion Corrosion PreventionPreventionCathodic Protection of Steel Cathodic Protection of Steel TanksTanks

SACRIFICIAL ANODES MUST SACRIFICIAL ANODES MUST BE CHECKED BY A CATHODIC BE CHECKED BY A CATHODIC PROTECTION TESTER ONCE PROTECTION TESTER ONCE WITHIN SIX MONTHS OF WITHIN SIX MONTHS OF INSTALLATION AND AGAIN INSTALLATION AND AGAIN ONCE EVERY THREE YEARS ONCE EVERY THREE YEARS THEREAFTERTHEREAFTER

SACRIFICIAL ANODE OR IMPRESSED CURRENT SYSTEMSSACRIFICIAL ANODE OR IMPRESSED CURRENT SYSTEMS

CATHODIC PROTECTION CATHODIC PROTECTION EXPERTS AND TESTERS MUST EXPERTS AND TESTERS MUST MEET THE QUALIFICATIONS MEET THE QUALIFICATIONS FOUND IN CHAPTER 17, FOUND IN CHAPTER 17, WATER QUALITY RULES AND WATER QUALITY RULES AND REGULATIONSREGULATIONS

CATHODIC PROTECTION CATHODIC PROTECTION SYSTEMS MUST BE SYSTEMS MUST BE DESIGNED BY A DESIGNED BY A CATHODIC PROTECTION CATHODIC PROTECTION EXPERTEXPERT

Corrosion Corrosion PreventionPreventionCathodic Protection of Steel TanksCathodic Protection of Steel Tanks

TANK

SACRIFICIAL ANODES

LINES-.85 VOLTS-.85 VOLTS-.85 VOLTS-.85 VOLTS

STI-P3 TANKS HAVE STI-P3 TANKS HAVE DIELECTRIC FITTINGDIELECTRIC FITTING

SACRIFICIAL ANODE SYSTEMSACRIFICIAL ANODE SYSTEM

POTENTENTIAL DIFFERENCES MUST BE:POTENTENTIAL DIFFERENCES MUST BE:

OR 200 MILLIVOLTS ABOVE OR 200 MILLIVOLTS ABOVE BACKGROUNDBACKGROUND

SEE CHAPTER 17 SECTION 9

Corrosion Corrosion PreventionPreventionCathodic Protection of Steel TanksCathodic Protection of Steel Tanks

TANK

NON-SACRIFICIAL ANODESNON-SACRIFICIAL ANODES

LINES

-.85 VOLTS-.85 VOLTS

OR 200 MILLIVOLTS ABOVE OR 200 MILLIVOLTS ABOVE BACKGROUND POTENTIALBACKGROUND POTENTIAL

IMPRESSED CURRENT SYSTEMIMPRESSED CURRENT SYSTEM

RECTIFIERRECTIFIER

POTENTIAL BETWEEN THE TANK, POTENTIAL BETWEEN THE TANK, LINES AND ANODES MUST BE:LINES AND ANODES MUST BE:

SEE CHAPTER 17 SECTION 9

CRITERIA REQUIRED FOR CRITERIA REQUIRED FOR CP CHECKSCP CHECKS

Must be in accordance with the Must be in accordance with the National Association of Corrosion National Association of Corrosion Engineers Standard RP-02-85, Engineers Standard RP-02-85, “Control of External Corrosion on “Control of External Corrosion on Metallic Buried, Partially Buried or Metallic Buried, Partially Buried or Submerged Liquid Storage Submerged Liquid Storage Systems”.Systems”.

SEE CHAPTER 17, SECTION 9(b), Wyoming Water Quality Rules and Regulations

CP EXPERT vs. CP CP EXPERT vs. CP TESTERTESTER

CORROSION EXPERTCORROSION EXPERT• Certified by the Certified by the

National Association National Association of Corrosion of Corrosion EngineersEngineers

• oror• A Registered A Registered

Professional Engineer Professional Engineer with education and with education and experience in experience in corrosion controlcorrosion control

CATHODIC CATHODIC PROTECTION TESTERPROTECTION TESTER• a person who can a person who can

demonstrate demonstrate understanding of the understanding of the principles and principles and measurementsmeasurements

• education and education and experience in soil experience in soil resistivity, stray resistivity, stray current, structure to current, structure to soil potential, and soil potential, and isolation measurementsisolation measurements

SEE CHAPTER 17, SECTION 4(K) AND 4(O) Wyoming Water Quality Rules

IDEAL REPORT OF A CP IDEAL REPORT OF A CP CHECKCHECK

TANK 1: 6000 GALLON SUPERTANK 2: 10000 GALLON UNLEADEDTANK 3: 6000 GALLON PLUSTANK 4: 6000 GALLON UNLEADED

rectifier

Island

Island8

765

5

4

3

2

1

109

11 1312

161514

Facility ID 0-002357

IDEAL REPORT OF CP IDEAL REPORT OF CP CHECKCHECK

POINT ID DESCRIPTION ON OFF

1 ANODE 4 -.540 -1.063

2 ANODE 5 -.536 -1.034

3 TANK 3 -.554 -1.067

4 LINE 4 -.560 -1.098

ETC.


IDEAL REPORT OF A CP IDEAL REPORT OF A CP CHECKCHECK

Current RequiredCurrent Required Minimum AnodesMinimum Anodes Rectifier VoltageRectifier Voltage Groundbed ResistanceGroundbed Resistance Name of NACE Certified Corrosion Name of NACE Certified Corrosion

SpecialistSpecialist Rectifier DataRectifier Data


Corrosion PreventionCorrosion PreventionInterior Lining of Steel TanksInterior Lining of Steel Tanks

STEEL TANK SHELLSTEEL TANK SHELL

INTERIOR LININGINTERIOR LINING

OUT OF SERVICE OUT OF SERVICE TANKSTANKS All tanks must be removed or permanently All tanks must be removed or permanently

abandoned within one year after they are abandoned within one year after they are taken out of service.taken out of service.• This is to prevent tanks from becoming a problem This is to prevent tanks from becoming a problem

years after they are abandoned.years after they are abandoned.• Old tanks, abandoned with fuel in them have Old tanks, abandoned with fuel in them have

caused many of the problems that we have found caused many of the problems that we have found to date.to date.

Permanently abandoning a tank requires Permanently abandoning a tank requires emptying the tank and filling it with an inert emptying the tank and filling it with an inert materialmaterial

TWO METHODS OF TWO METHODS OF PERMANENTLY PERMANENTLY ABANDONING A TANKABANDONING A TANK

Remove the tank from the groundRemove the tank from the ground• Tanks must be decommissioned if removedTanks must be decommissioned if removed• Decommissioning facilities must be permittedDecommissioning facilities must be permitted• DEQ inspects all removals to determine if the DEQ inspects all removals to determine if the

site is contaminated with productssite is contaminated with products

Clean out the tank and fill with an Clean out the tank and fill with an inert materialinert material

REPORTING OF REPORTING OF SUSPECTED RELEASESSUSPECTED RELEASES

Operator must report a suspected release Operator must report a suspected release orally with 24 hours, whenever:orally with 24 hours, whenever:• there are unusual operating conditions such as there are unusual operating conditions such as

erratic behavior o dispensing equipment, water erratic behavior o dispensing equipment, water in the tank, or sudden loss of product from the in the tank, or sudden loss of product from the tank.tank.

• there is a discovery of products in the there is a discovery of products in the surrounding area, such as vapors in surrounding area, such as vapors in basements, storm drains or utility lines.basements, storm drains or utility lines.

• any monitoring result indicates a loss of any monitoring result indicates a loss of productproduct

RELEASE RELEASE INVESTIGATION INVESTIGATION AND CONFIRMATIONAND CONFIRMATION

TESTS WHEN THERE IS A SUSPECTED RELEASE, OWNERS MUST TEST BOTH….

SEE CHAPTER 17, SECTIONS 21, 16(C) AND 17(B)

THE TANKS

AND THE LINES

OWNERS MUST:

REPAIRREPLACE

UPGRADE, OR

PERMANENTLY CLOSE

ANY TANK FOR WHICH A RELEASE IS CONFIRMED

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THE WYOMING Storage Tank Program