To Whom lt May Concern:

The Montana Department of Environmental Quality (DEO) has prepared the followingenvironmental assessment as required by law in ARM 17.4.607(2) and ARM 17,4.609(2). Thisproject involves installing (1) 20,000 gallon Xexes Fiberglass Reinforce Plastic (FRP) doublewalled underground storage tank storing gasoline and (1) two compartment 20,000 gallon total(12K,8K) Xexes FRP double walled underground storage tanks storing gasoline and dieselwith associated secondarily contained AO Smith or Ameron FRP underground piping at TownPump Butte #5 located at 3280 Nettie, Butte, MT, 59701.

The DEQ prepares environmental assessments to inform interested government agencies,public groups, or individuals of a proposed action and to determine whether or not the actionmay have a significant effect on the human or natural environment. This environmentalassessment will be circulated for seven days. After the seven-day comment period, DEQ willdecide what action to take regarding this permit.

lf you care to comment on this proposed project or the attached environmental assessment,please write or emailthe Permitting & Compliance Division. Comments must be in writing andmust be received by July 27,2011. Our email address is ustprogram@mt.gov and our mailingaddress is P.O. Box 200901, Helena, MT, 59620-0901.

Sincerely,

SA"*^Sb,l,u'<teztShasta SteinwedenUnderground Storage Tank Section Environmental SpecialistWaste and Underground Tank Management Bureau

enc: EnvironmentalAssessment

O/O NAME: Town Pump Inc FACILITY NO: 50 - 151-87

PERMIT NO: 12-0005 DATE OF APPLICATION: June, 24 2OLL

PERSON PREPARING EA: Shasta Steinweden COUNTY: Silver Bow

LOCATION: 3280 Nettie, Butte, MT, 59701

FACILITY NAME: Town Pump Butte #5 EA COMPLETED: iluJ-y, 13 2011

DESCRIPTION OF PROPOSED ACTION: The purpose of this action is to install (1) 20,000gallon xerxes Fiberglass Reinforced Plastic (FRP) double walled underground storagetank storing gasoline fuel and (1) two compartment 20,000 gallon total (L2K,8K)Xerxes FRP doubfe wa11ed underground storage tanks storing gasoline and diesel wit,hassociated secondarily contained AO Smith or Ameron FRP underground piping. Eachtank will use a tank probe and secondary containment monitoring for leak detection.Pj-pe leak detection will be secondary containment monitoring with electronic lineleak detection.DESCRIPTION OF THE BENEFITS AND PURPOSE OF THE PROPOSED ACTION: Purpose is toinstall new tanks and piping creating a new refueling staLion. The benefits includemore fuel choices.

A: Significant unavoidable impactsB: Potential significant impacts mi-tigated based upon license condit,j-onsC: Insignificant as proposed

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1. TOPOGRAPHY: Are thereunusual geologic features?will the surface featureschanqed?

X Location is currently acommercial property(previously a gas station)located at 3280 Nettie,Bubte MT. There are noknown or report,ed unusualgeologic features. Thetanks and associatedpiping will be buriedunderground whileappurtenanL eguipment isabove ground. Generaltopography will notchange; surface featureswill be consErucEedconsistent with retailpetroleum re-fuelingfacilities.

2. GEOLOGY AND SOIL QUALITY,STABILITY AND MOISTURE: ATCfragile, compacti-bIe orunstable soils present? Arethere special reclamationconsiderations?

x There are no known specialreclamation considerationsfor the project site norare any fragile orunstable soils identifiedto the reviewer.

WATER QUALITY, QUANTITY AND3.DISTRIBUTION: Are important

x Important water resourcesare present. There are 8

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surface or groundwaterresources present? Is therepotential for violation ofambient, water qualitystandards, drinking watermaximum contaminant levels,or degradation of waterguality?

public water supplies anddistribution systemslocated within 3 mil-es ofthe proposed site.Tramway Gulch, ReeseCanyon, and Silver BowCreek are ]ocated within 3

miles of the proposedsite. Potential violationof ambient water guatitystandards, drinking watermaximum conEaminantlevels, or degradation ofwater quality is mitigatedby installation of doublewal1 fiberglass tanks(non-corroding) andsecondarily contained non-corroding undergroundpiping.Improper operation of thissystem would increase thepotential for vioLation ofambient water qualitystandards, drinking watermaximum contaminantIevels, and thedegradation of waterquality. Leak detectionsystems serve to mitigatethe potential impactsimmediately reducing theamount of fuel availablefor release to theenvironment.

4. AIR QUALITY: Will pollutantsor particulate be produced?Is the project influeneed byair quality regulations orzones (Class f airshed) ?

x Petroleum vapors wil-I bereleased at this site,however Stage I vaporrecovery will be installedEo reduce vapor releases.Natural air currents,submerged fill pipe, andvent pipes will dissipatehydrocarbon vapors Lo asafe level. The closestClass I area airshed,Anaconda- Pintler

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wilderness area, islocated over 20 miles fromthe project site.

5. DEMANDS ON ENVIRONMENTA], RE-SOURCES OF LAND, WATER, AIROR ENERGY: Will the projectuse resources that arelimited in the area? Arethere other activitiesnearby that will affect theproj ect?

This project will not useexisting environmentalresources in the localarea. There are no othernearby activitiesidentified to the reviewerthat may be impacted.

6. IMPACTS ON OTHERENVIRONMENTAL RESOURCES : ATCthere other studies, plansor projects on this tract?

-2! There are no known otherenvironmental studies orprojects on thj-s land.This parcel is in SilverBow County and is zonedfor general commercialuse. The project complieswith current zoningregulations of the area.

7. TERRESTRIAL, AVIAN, AND

AQUATIC LIFE AND HABITATS:rs there subsEantial use ofthe area by importantwildlife, birds or fish?

,{' No known use of projectsite by importantwildl-ife, birds or f ishhave been identified tothe reviewer.

8. VEGETATION COVER, QUANTITYAND QUALITY: Will vegetativecommunities be permanentlyaltered? Are any rareplants or cover typespresent?

Y A portion of the existingvegetative community willbe altered at thetank/pipe burial location;however no rare plants orcover types are reportedto this reviewer. Thislocation was previously agas st.ation

9. UNIQUE, ENDANGERED, FRAGILEOR LIMITED ENVIRONMENTALRESOURCES: Are any federallyIisted threatened orendangered species oridentified habitat present?Any wetlands? Any speciesof special concern?

x No federally listedthreatened or endangeredspecies, identifiedhabj-tats, or species ofspecial concern isidentified or reported tothe reviewer within 1 mileof the project site. Thereare designated PalustrineWetl-ands and RiverineWetland Habitats within 2

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miles of the project site.

]-0. HISTORICAL AND ARCHEOLOGICALSITE: Are any historical,archeological orpaleontological resourcespresent?

X There are l-3 listedhistorical structureslocated within the city ofButte. There are nolisted structures at theproject site. There are noknown archeological orpaleontological resourcesreported to the reviewer.

11. AESTHETICS: Is the projecton a prominent topographicalfeature? WiIl it be visiblefrom populated or scenicareas? WiIl there beexcessive noise, light orodors?

X This proposal isaesthetically compatiblewith the land use of thecurrent area. Storage tankeguipment wil-I be buriedunderground wj-thappurtenant eguipmentabove ground that will bevisible. This propertypreviously was t,helocation of a retail gasstation.

12. AGRICULTURE: Will grazinglands, irrigation waLers orcrop production be affected?

X No known impacts. Noagricultural lands arepresently in use atproject site.

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].. SOCIAL STRUCTURES AND MORES:Is some disruption of nativeor traditional lifestyles orcommunities possible?

X It is not anticipated thatthe project will disruptnative or traditionallifestyles or communities.

2. CULTT'RAL T'NIQUENESS A}IDDIVERSITY: WiIl- the acLioncause a shift in some uniqueguality of the area?

x It is not anticipated thatthe project will cause ashift in any unique qualityof the area.

3. DENSITY AND DISTRIBUTION OFPOPULATION AND HOUSING: Willthe project add to thepopulation and requireadditional housinq?

X It, is not anticipat,ed thatthe project will add to thepopulation or requireadditional housing.

4. HUMAN HEALTH & SAFETY: WilI x It is anticipated that

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this project add to healthand safety risks in thearea?

natural air currents andtank vents will dissipatethe hydrocarben vapors to asafe leveI. Leak detectioneguipment is designed todetect releases beforeserious health or safetyproblems occur.

Improper operation of thissystem could impact humanhealth and safety. Leakdetection systems andoperating requirementsmitigate this potentialimpact by immediatelyreducing the amount of fuelavailable to be releasedi-nto the environment whereit could impact health andhuman safety.

5. COMMT,]NITY & PERSONAL INCOME:will the facility generateor degrade lncome?

Jr The project result (retailof fuel) is anticipated tohave the potential togenerate community orpersonal income in theIocal area.

6. QUANTITY AND DISTRIBUTION OF

EMPLOYMENT: Will the projectcreate, move or eliminatejobs? If so, estimate jobs.

x It is not anticipated thatthis project will create oreliminate jobs. However,the project result isreport,ed to have thepotential to create (1-2)full time positionsassociated wit,h the retailof fuel.

7. LOCAL AND STATE TAX BASEREVENUES: Will the projectcreate or eliminate taxrevenue?

x It is not anticipated thatthis project will add tothe 1ocal or state taxbase. However, it isanticipated that the retailrefueling operationassociated with thisproposal will generate

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additional local- and staUetax revenue.

DEMAND FOR GOVERNMENTSERVICES: WilI substantial-traffic be added to existingroads? Will other services(fire protection, police,schools, etc.) be needed?

x It is anticipated that theresul-t of the proposedproject will add to theIocal traffic flow alongNettie and Continental Drin Butte. other requiredservices wil-I be minimallyimpacted as a result ofthis project.

9. INDUSTRIAL, COMMERCIAL ANDAGRICULTURAL ACTIVITIES ANDPRODUCTION: will the projectadd to or alter theseactivities?

x No significant impacts toadjacent commercial oragricultural activities areanticipated that arerelated to this project.

l_0. AccEss To ANp QUALTTY OF

RECREATIONAL AND WILDERNESSACTIVITIES: Are wildernessor recreational- areas nearbyor accessed through thistract? fs thererecreational potentialwithin the t,ract?

Y Designated USFSrecreational property islocated within 5 miles ofthe project area, but isnot accessed through theproject location. It is notanticipated that thisproject site hasrecreational potential.

11. AESTHETICS: Is the projecton a prominent topographicalfeature? Will it be visiblefrom populated or scenicareas? Will there beexcessive noise, Iight orodors?

x Petroleum storage tank andpiping are buriedunderground. It is notanticipated that thisproject will change theaesthetics of the area.Currently this site is aclosed gas station.

]-2. LOCALLY ADOPTEDENVIRONMENTAL PLANS ANDGOALS: Are there state,county, city, USFS, BLM,tribal, etc., zoning ormanagement plans in effect?

x There are no known county,tribal, USFS or BLMenvironmental managementplans that would impactthis project development.The proposed project andassociated development isexpected to be inconformance with currentSilver Bow County zoningrequirements.

l-3. TRANSPORTATTON: Will- the x This project is expected to

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PUBLIC INVOLVEMENT: The department has attempted to identify interested parties tothis application and provide the opportunity for public comment. A copy of thisEnvironment,al Assessment of the proposed underground storage tank installation hasalso been posted at our website (http://www.deq.state.mt.us/ea.asp) . Substantj-vecomment may also be provided to email address at ustprogram@mt.gov

ALTERNATMS CONSIDERED: No other alternatives were presented or considered.

COMPLIANCE STATUS: This project, as permitted, will be in compliance with the USTregulat,ions. The facility must, however, be operated and maintained in accordancewith the UST rules and regulations. This facility is reguired to have a complianceinspection done within 120 days of t,he installatj-on of the tank systems.

RECOMMENDATIONS CONCERNING PREPARATION OF AN EIS: Not necessary at this tj-me basedupon the information reviewed. The project, as proposed with mandatory operatingand permiL conditions, will not have a significant environmental impact.

OTHER GROUPS OR AGENCIES CONTACTED OR WHICH MAY HAVE OVERLAPPING .JURISDICTION: ThCMontana DepartmenE of Justice, Fire Prevention and Investigation Bureau regulatesaboveground components.

INDIVIDUALS OR GROUPS CONTRIBUTING TO THIS EA: The owner, the contractor, and thepreparer of the EA.

PERMIT CONDITION EFFECTS: Permitregulations, PEI RP100-2000 and

conditions are based on Montana and federalaccepted standard engineering practices.

cc: Governor' s OfficeLegislative Environmental Policy office

Tank Location (Detail)

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project affect localtransporEation networks andtraffic flow?

minimally affectimmediately adjacent localtransportat j-on network.

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