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HomeMy WebLinkAboutTakotna PDR concept design October 15, 1999Sent By:Alaska Energy and Engineering,;907 349 8001;Oct-13-99 2:57PM;Page 1/15To:DOE ENGINEERING At:2694685 *--. Alaska Energy and Engineering,Inc. PO Box 111405 Anchorage,AK 99511-1405 907-349-0100 Phone 907-349-8001 FAX sstassel@micronet,net Facsimile Transmittal from: Alaska Eneray and Engineering,Inc. te TOyWr6 [foe Wem 69.wee[erFrom:Steven J.Stassel Date:October,,1999 re:[atotra PJe Pages:+O pAgr2 pec BEAce: OD Urgent OO For Your Info.ter Review OD Please Comment ©Please Reply |AE 'FAR ADO|MOUAC Jued A pws. - If you do not recelve all pages,please call 907-349-0100 Sent By:Alaska Energy and Engineering,;907 349 8001;Oct-13-99 2:58PM;Page 2/15 Alaska Energy and Engineering,Inc.Mailing Address -P.O.Box 111205 1217 East Klatt Road,Suite AAnchorage,AK 99511-1405 Ne (907)349-0100349-8001 fax July 16,1998 Mr.Eric Marchegiani,Manager of EngineeringDepartmentofCommunityandRegionalAffairsDivisionofEnergy 333 West 4th Avenue,Suite 220 Anchorage,AK 99501-2341 Subject:Praliminary Design and Construction Cost EstimateTakotnaIASDBulkFuelUpgrade Dear Mr.Marchegiani: Enclosed please find the draft copy of the above referenced report.The study presentsaplanforupgradeoftheIditarodAreaSchoolDistrictschoolfuelstoragefacility,including a short term storage facility at Sterling Landing.The concept design does notincludethecommunityofTakotnafuelstoragefacilities,at this time.Additional sitedataisrequiredtocompletethecommunitywideconsolidation/upgrade plan.DuringthesitevisitinFebruary,snow cover on the ground,tanks,and dikes prevented athoroughreviewofthefacilitiesandsiteconditions.A final site visit will be conductedthissummer.The final concept design report will include both the IASD andcommunityfacilities, The total construction cost for the [ASD school and short term storage facility at SterlingLandingisestimatedat$468,376. \f you have any questions or need any other additional information,please call me at(907)349-0100,or fax your comments to (907)349-8001. Sincerely, Alaskz,Energy angEngineering,Inc. <,fos-Steven J.Stassel,P. President attachments:as noted Sent By:Alaska Energy and Engineering,;907 349 8001;Oct-13-99 2:58PM;Page 3/15 {ASD Takotna School Bulk Fuel July 15,1998 DRAFT -Upgrade Concept Design Alaska Energy and Engineering 1.0 INTRODUCTION This report has been prepared by Alaska Energy and Engineering,Inc.(AEE)fortheDivisionofEnergy,DCRA.The purpose of this study is to provide a conceptdesignandconstructioncostestimatefortheupgradeoftheIditarodAreaSchoolDistrict(IASD)school heating fuel storage facility in the community ofTakotna,The participants in the this phase of the project include only the [ASDschoo The proposed tank farm project will comply with current State and Federal codes'and regulations and will: *provide short-term fuel storage capacity at the Sterling Landing on theKuskokwimrivertoreceivefuelbybargefortransferbytrucktoTakotna; *upgrade the [ASD school fuel storage facility at Takotna A site investigation was performed by Steve Stassel of AEE from February 25 to26,1998.Existing tanks were examined to determine suitability for reuse.Potential sites were examined and topographic surveys performed.Due toextensivesnowcover,not all data was visibly accessible.The followingcommunitymemberswerecontactedtodiscusstheprojectandobtaininformationduringthesitevisit: e David Shelborne,|ASD Maintenance 524-0333 e Dick Newton,Takotna Community Association 298-2211 Prior to the field investigation,available information was obtained and analyzed,including aerial photographs,community profile,survey plats,engineeringStudies,Corps of Engineers Wetlands and flood information,and other relevantata.) During the field investigation the ground was frozen and covered with snow.Anadditionalsitevisitwillbeperformedduringthesummerof1998toobtainadditionalinformationtodetermineifageotechnicalinvestigationisrequiredandtoverifyfielddataobtained. 2.0 EXISTING FACILITIES -FUNCTION AND CAPACITY The school net bulk fuel storage capacity,based on 90%of the gross tank shellcapacity,is provided in the following table: EXISTING NET*FUEL STORAGE CAPACITY Facility Unleaded Heating Fuel School N/A 15,000 gallons Total N/A 15,000 gallons *Net capacity is based on 90%of tank shell dimensions toaccountforactualuseablefuelinthetank. JASD School.The school tank fuel facility consists of one 10,000 gallonundergroundstoragetank(UST),and 7 day tanks of various sizes.The UST islocatedadjacenttotheschoolbuildingandisusedtostoredieselfuelforheatingtheschoolbuildingsandforbackupelectricgeneration.The gross capacity of Page 1 of 7 Sent By:Alaska Energy and Engineering,;907 349 8001;Oct-13-99 2:58PM;Page 4/15 {ASD Takotna School Bulk Fuel July 15,1998DRAFT-Upgrade Concept Design Alaska Energy and Engineering the facility is 15,000 gallons.The UST tank is filled by hose from the TCA fueltruck,Fuel is transferred to the day tanks by fuel hose. Sterling Landing Temporary Storage.There are a total of ten tanks located atSterlingLanding.All fuel for Takotna,the surrounding mines,and the Air ForceLARSstationisdeliveredbybargetoSterlingLandingandtransferredbytheTCAfueltruck.The gross capacity of the tanks located at Sterling Landing is127,700 gallons. 3.0 CURRENT FUEL CONSUMPTION Annual fuel consumption information was obtained for the school district.Thefollowingtableshowsthebreakdownoffuelconsumptionfortheschool. CURRENT ANNUAL FUEL CONSUMPTIONFacilityUnieadedHeatingFuel School _N/A 45,000 gallons Total 15,000 gallons 3.1.Planned Infrastructure Improvements Mr.David Shelborne with the Iditarod Area Schoo!District was contacted regarding proposed or future upgrades to the existing facility.Mr.Shelborneindicatedthatthecommunityiscurrently#10 on the waiting list for a new school. 3.2.Tank Capacity Requirements It is important to provide sufficient tank capacity to meet the near term needs oftheschoo!and provide sufficient capacity for future growth.In order toaccommodateanincreaseinschool]heating fuel consumption,two 10,000 gallonhorizontaltanksareincludedintheconceptdesign.Space in the dike for a thirdfuture10,000 gallon tank is also provided. PROPOSED NET TANK CAPACITY VERSUS CONSUMPTIONacilityAnnualUse”Capacity™*Heating Fuel 15,000 gallons 19,000 gallons Total 15,000 gallons 19,000 gallons *"Current or estimated near-term use based on planned development.**Net capacity (90%of gross shell capacity)of proposed tank farms asconfiguredinthecurrentdesign(does not include future third tank). 4.0 PROPOSED PROJECT DESCRIPTION Two separate facilities are required to meet the IASD school fuel storage needs:one facility located at Sterling Landing to receive fuel by barge,and one at theschool!site in Takotna. The Sterling Landing facility will provide sufficient short term storage capacity foroffloadingfuelbargedeliveriesofheatingfueltomeettheneedsoftheschool Page 2 of 7 Sent By:Alaska Energy and Engineering,;907 349 8001;Oct-13-99 2:59PM;Page 5/15 IASD Takotna Schoo!Bulk Fuel July 15,1998 ORAFT -Upgrade Concept Design Alaska Eneray and Engineering district.Fuel will be transferred into the Takotna by fuel truck and stored in theproposedschooltankfarmfacility. The project Concept Design Drawings are attached. Sterling Landing: The bulk storage/transfer facility located at Sterling Landing will receive fuel bybargeforshorttermstorage.The facility will consist of two 10,000 gallonhorizontalskidmountedtankslocatedinalinedearthendike.Space for a future10,000 gallon tank is also provided.Secondary containment will be providedadjacenttothetanksforloadingheatingfuelintothefueltruck.The facility willbeenclosedbyasecurityfence. School Tank Farm: The school tank farm will replace the existing UST tank and provide fuel foremergencyelectricgenerationandschoolbuildingheat. The facility includes two 10,000 gallon horizontal skid mounted tanks located in alinedearthendike.Space for a future 10,000 gallon tank is also provided.Thetankswillbetopfillandwillbefittedwithspillcatchmentbasins,and mechanicalfilllimiters.A 2”schedule 80 below grade distribution pipeline will provide fuel tothepackageddaytankslocatedattheschooloutbuildings. 4.1 Site Sterling Landing: The Sterling Landing facility is located approximately 23 roads miles south ofTakotna.The tank farm site is approximately 100 feet north of the KuskokwimRiver.The area sets high on the side of hill about 35 feet above the riverelevation,The land at Sterling Landing is owned by the State of Alaska,Department of Natural Resources (DNR).ONR has provided site control to theTakotnaCommunityAssociationforafuelstoragefacilityfortemporarystorage.Site control for the IASD facility is required. There is no available flood data for the landing.Based on extrapolation of available flood data for McGrath,and information provided by Dick Newton,thefloodhazardisconsideredlow.The tank farm pad elevation is approximately 30feethigherthantheriverbankattheendoftheroad.The tank farm area is ©generally level with slight drainage southerly towards the Kuskokwim River.ThelocationoftheproposedtankfarmsiteisindicatedondrawingM3. School Tank Farm: The existing school tank farm site is above the 100 year floodplain;therefore,noadditionalsiteelevationorprotectivestructuresarerequiredtomeetfloodmitigationrequirements.The location of the proposed tank farm site is indicatedondrawingM1, e A Certificate to Plat has not yet been prepared,but based on preliminaryinformation,the proposed site is owned by the IASD. Page 3 of 7 Sent By:Alaska Energy and Engineering,;907 349 8001;Oct-13-89 2:59PM;Page 6/15 IASD Takotna School Bulk Fuel July 15,1998DRAFT-Upgrade Concept Design Alaska Energy and Engineering 4.2 Secondary Containment -The Uniform Fire Code and E.P.A.regulations require fuel tanks to be equippedwithsecondarycontainment.This typically can be accomplished by either usingsmallcapacity(less than 12,000 gallon)double wall tanks with overfill preventionmeasures,or a secondary containment structure (dike)that is capable of holdingthecontentsofthelargesttankplussufficientfreeboard(usually 6”to 12")toholdaccumulatedprecipitation. Sterling Landing: Based upon the availability of earth moving equipment and local fill,an earthendikewithamembranelinerwasdeterminedtobethemostcosteffectivemeans of providing secondary containment.The dike will be lined with a membranelinercompatiblewith#1 heating fuel.A non-woven geotextile fabric will beinstalledaboveandbelowthelinertopreventpunctureanddamageanda4”deep layer of gravel cover will be placed over the liner.A 4”deep cellularconfinementgridwillbeinstalledoverthelinerontheinteriordikewallstohold the fill in place on the side slopes. A lined earthen berm will be constructed at the fuel truck loading area.The bermwillbelinedwithamembranelinerthatiscompatiblewith#1 heating fuel andprotectedinthesamemannerasthemaindikeliner.The front portion of thedikedareawillhaveageogrid"slab”for parking the truck and the back partionwillbedepressedtocreateanimpoundbasinsizedtocontainthecontentsofonecompartmentofthefueltruck(about 1000 gallons.) School Tank Farm: Based upon the availability of earth moving equipment and local fill,an earthendikewithamembranelinerwasdeterminedtobethemostcosteffectivemeans of providing secondary containment.The dike will be lined with a membranelinercompatiblewith#1 heating fuel.A non-woven geotextile fabric will beinstalledaboveandbelowthelinertopreventpunctureanddamageanda4°deep layer of gravel cover will be placed over the liner.A 4”deep cellularconfinementgridwillbeinstalledoverthelinerontheinteriordikewallstoholdthefillinplaceonthesideslopes. 4.3 Tanks Sterling Landing: Two new 10,000 gallon single wall tanks will be installed for short term storage of#1 heating fuel.The tanks will be shop built horizontal welded steel tanks builtandlabeledinaccordancewithUL142andequippedwillsteelsaddleandskidfoundations.The tanks will be equipped with normal vents,emergency vents,level gauges,and high limit alarms. The tank skids will be placed on 4x12 treated timber mudsills at grade.Thetimberswillbesizedtolimitsoilbearingpressureto1,500 pounds per square foot. Page 4 of 7 Sent By:Alaska Energy and Engineering,;907 349 8001;Oct-13-99 2:59PM;Page 7/15 IASD Takatna School Bulk Fuel July 15,1998 DRAFT -Upgrade Concept Design Alaska Energy and Engineering Schoo]Tank Farm: -Two new 10,000 gallon single wall tanks will be installed for storage of #1heatingfuel.The tanks will be shop built horizontal welded steel tanks built andlabeledinaccordancewithUL142andequippedwillsteelsaddleandskidfoundations.The tanks will be equipped with normal vents,emergency vents,level gauges,float-type mechanical fill limiters,spill catchment basins,and high limit alarms. The tank skids will be placed on 4x12 treated timber mudsills at grade.The timbers will be sized to limit soil bearing pressure to 1,500 pounds per square foot. 4.4 Piping/Valves/Pumps/Accessories All 2”diameter and smaller above-grade piping will be schedule 80 black steel.All below-grade piping will be schedule 80 steel with a high density polyethylenecoatingandcathodicprotection.Above-grade piping will be installed on treatedtimbersleepersandsecuredwithsteelpipestraps.All piping joints will beweldedorflangedexceptforconnectionstopumpswhichmaybethreaded.Sufficient flanged joints will be provided to allow service of pumps and otherdevices.All connections to pumps and tanks will be made with stainless steelflexibleconnectors.Each isolated section of piping will be provided withpressurerelievingdevicestoaccountforthermalexpansionofproductcausedbytemperaturefluctuations.Provisions for movement of the piping caused bythermalexpansionandcontractionwillalsobeincluded.All valves will be steelbodyindustrialgradevalvesintendedforusewithfuels. Sterling Landing: The tanks will be bottom fill via a common fill/withdraw piping manifold.BulktransferswillbefromthecommonfillAvithdrawmanifoldusingafuelratedhoseequippedwithadry-connect fitting to fill the tanker. School Tank Farm: The tanks will be top fill,The hose connection points will be equipped with a 5gallontankmountedspillcatchmentbasinwithlockabletop. The tanks will be manifolded together with 2”piping.Fuel will be transferred totheschoolandoutbuildingsusinga2”diameter below-grade pipeline.Newpackageddaytankswillbeprovidedfortheoutbuildings.The day tanks will beequippedwithasuctionpump,automatic controls,level gauges,fuel filters,andredundantoverfillprotectiondevicesandalarms.A normally closed solenoidvalvewillbeinstalledinsidetheschooltankfarmandwillbeinterlockedwiththe day tank controls to prevent accidental discharge.The day tanks will fillautomaticallyasrequiredtomeetdemand. 45 Security All bulk storage dike and truck loading areas will be enclosed by chain link fencewithabarbedwiretop.Two access gates will be provided into each fencedenclosure,All valves will be provided with lockable handles to prevent theft and vandalism. Page 5 of 7 Sent By:Alaska Energy and Engineering,;907 349 8001;Oct-13-99 3:00PM;Page 8/15 IASD Takotna School Bulk Fuel July 15,1998 DRAFT -Upgrade Concept Design Alaska Energy and Engineering 5.0 PERMITTING A Plan Review permit from the State Fire Marshal is required.Final stampeddesigndrawingsarerequiredtobesubmittedforreviewandapprovalpriorto construction. The pipeline to the schoo!and out buildings will be routed on school property;therefore,easements should not be required.A letter of non-objection may berequiredfromeithertheschooldistrictortheDepartmentofEducation. 6.0 SPILL RESPONSE Because the Sterling Landing facility will have oil storage tanks in excess of 660gallonsandwillreceivedeliverybymarinevessel,it will be subject to U.S.Environmental Protection Agency and U.S.Coast Guard regulations.AnOperationsManual,Oil Spill Response Plan,and a Letter of Intent will need tobepreparedandsubmittedtotheCoastGuard.The facility will also requirepreparationofaSpillPreventionControlandCountermeasures(SPCC)plan The school tank farm facility will also have oil storage tanks in excess of 660gallons,but will not receive delivery by marine vessel;therefore,it will not besubjecttoU.S.Coast Guard regulations.The facility will not contain a grosscapacityof42,000 gallons or more;therefore,EPA Oil Spill Response Plans arenotrequired.However,the facility does require preparation of a Spill PreventionControlandCountermeasures(SPCC)plans. Spill response gear,Including sorbent material,protective safety gear,andpossiblycontainmentboomwillneedtobeprovided. 7.0 SCHEDULE Initial project site preparation and school tank farm dike construction is estimatedatapproximately3weeks.The road to Sterling Landing should be sufficiently drytohaulequipmentandmaterialinlateJune/early July.Tank and piping installationcanoccurinlateJuly,the entire project should be complete and ready foroperationbyearlyAugust. To meet this schedule,the final design should be completed and submitted to theFireMarshallbyFebruary.Procurement is required to begin in early March toensuredeliveryofmaterialsintimeforalateMay/early June sailing to SterlingLanding.The longest lead item is expected to be the 10,000 gallon tanks.Current lead time estimates vary from 6 to 8 weeks,up to 12 weeks.Because oftheshortrunwaythecostofairfreightisrelativelyhigh;therefore,virtually allmaterialsshouldbeshippedinbybargetoSterlingLanding. Page 6 of 7 Sent By:Alaska Energy and Engineering,;907 349 8001;Oct-13-99 3:00PM;Page 9/15 {ASD Takotna School Butk Fuel July 15,1898 DRAFT -Upqrade Concept Design Alaska Energy and Engineering 8.0 COST ESTIMATE The construction cost estimate has been developed based on a "modified”force-account approach utilizing a combination of local labor and certified craftsmenunderthedirectionofanexperiencedsuperintendent.The estimatedconstructioncostsdonotincluderentaloflocalheavyequipmentwhichhasbeenincludedasanin-kind contribution.The detailed construction cost estimate is attached. e School Tank Farm:$262,842 e Sterling Landing:$135,534 e__Total Construction Cost:$398,376 e Engineering and CCA:$70,000 ©Total Project Cost:$468,376 Page 7 of 7 Sent By:Alaska Energy and Engineering,;907 349 8001;Oct-13-99 3:00PM;Page 10/15 Takotna Bulk Fuel Storage Assessment Report Site Assessment:2/24/98 8.0 VILLAGE OF TAKOTNA/STERLING LANDING There are two bulk fuel facilities identified in Takotna and Sterling Landing.These include the facility in Takotna operated by Takotna Community Association (TCA)and the storage facility at Sterling Landing operated by TCA and various owners.The Takotna School has a 10,000 gallon underground storage tank operated by Iditarod Area School District (ASD).This tank is not included in the assessment. The flood hazard for Takotna and Sterling Landing is low. The airstrip is located on top of a mountain approximately 1500 feet north of Takotna School.There are no docks in this community. TCA provides electricity to the community.The power plant uses air-cooled Deutz generators;therefore,there is no potential for waste heat recovery. Sent By:Alaska Energy and Engineering,;907 349 8001;Oct-13-99 3:00PM;Page 11/15 'Takotna Bulk Fuel Storage Assessment Report Site Assessment:2/24/98 8.1 TANK FARM NUMBER 1 --TAKOTNA COMMUNITY ASSOCIATION The Takotna Community Association (TCA)bulk fuel facility consists of four horizontal tanks and one vertical tank.All tanks are single wall,welded steel construction.Tank #1 is a horizontal tank having no skids and rests directly on grade.Gravel berms have been built along the sides to support the tank.Filling is accomplished by placing a hose through the manhole in the top of the tank.This tank has a 2”threaded steel bottom valve and is gravity fed to a bulk transfer station adjacent to the power plant via 2”threaded steel pipe.Tank #2 is a horizontal,skid-mounted tank with a ladder welded to one end.This tank is equipped with two 2”bungs on top:one for venting and the other for hose filling.Heating fuel is gravity fed through a 1”bronze valve at the bottom of the tank.Tank #3 is a horizontal,skid-mounted tank;however,the saddles are not attached to the tank belly bands.On top,the tank is equipped with one 2”bung and one 3”bung.This tank Is top filled.Gas is gravity fed through a 3”valve at the bottom of the tank.Tanks #2 and #3 are piped to a Fill-Rite style dispenser.Tank #4isaverticaltankonheavytimbersatgrade.This tank is filled through a 1-1/2”bronze valve connected to the bottom of the tank by a 3x1-1/2 reducer.Heating fuel is piped from the bottom of the tank through a 3"threaded steel fire valve,a 2”threaded steel gate valve and 2”threaded steel pipe to a day tank in the water treatment plant.Tank #5 is a horizontal tank for bulk storage of #2 heating fuel for the power plant.The tank foundation could not be verified due to snow cover.The tank is equipped with a manhole and two 3”bungs on top and a 3”bottom gate valve.#2 heating fuel is gravity fed to the power plant day tank through 3”arctic pipe.To prevent the #2 fuel from gelling during cold weather,the arctic pipe runs through a culvert and warm air from heaters is blown into the culvert.The overall condition of all tanks is fair to good with the exception of Tank #1,which is dented on the bottom and needs to be painted;its overall condition is poor.All tanks are contained within earthen dikes,which appear appropriate in size,however lining could not be verified due to snow cover.Tanks #2, #3 and #4 do not have manholes.No security fencing exists around any of the tanks. A single light is provided at the dispenser.No fuel leaks were observed during the survey. TANK FARM 1,TAKOTNA,ALASKA TANK NO.DIAMETER HEIGHT/VERTICAL)GASOLINE/|CALCULATED(FT)LENGTH HORIZONTAL.HEATING CAPACITY (FT)FUEL (GALLONS) 1 10'-5”31-2”H #2HF 19800 2 6'-4"17'-2°H #1HF 4000 3 8'-0"14°-1”H GAS 5200 4 10'-0”12'-0"V #1HF 7000 5 8'-0”26'-0”H #2HF 9700 Total (gal)45700 Sent By:Alaska Energy and Engineering,;907 349 8001;Oct-13-99 3:01PM;Page 12/15 STEEP HILL UP EARTHEN DIKE NAP =) @ @RUBBERHOSE Hl La Lo)aa" 2"THREADED STEEL-= WATER TREATMENT -™4 PLANI &LAUNDRY POWER PLANT f SHOP | STEEP HILL UP-= 2”THREADED STFEL STORAGE -ts ARCTIC PIPE INCULVERTTODAYIANK IN POWER PLANT 7 EARTHEN DIKE PROVE:DOE BFA -PHASE It erMIDDLE_KUSKOKWiM CLUSTER ame mss |Smeg,2/8imeTAKOTNATANKFARM#1 nee SHCET TAKOTNA COMMUNITY ASSOCIATION TAKOTFI fos STATE OF ALASKA DEPARTMENT OF COMMUNITY &REGIONAL AFFAIRS DIVISION OF ENERGY 355 W.4th AVENUE,SUITE 220 ANCHORAGE,AK 99501 Sent By:Alaska Energy and Engineering,;907 349 8001;Oct-13-99 3:01PM;Page 13/15 Takotna Bulk Fuel Storage Assessment Report Site Assessment:2/24/98 8.2.TANK FARM NUMBER 2 -STERLING LANDING The Sterling Landing facility is a short-term storage facility for receiving barge deliveries and for transfer by tanker vehicle to Takotna,US Air Force LARS Station, and several local mines.There are nine horizontal tanks and one vertical tank at Sterling Landing for storing heating fuel and gasoline.Tanks #4,#5,#6,#7 and #8 are owned by TCA while tank #9 is reportedly owned by Magnuson.Fuel is brought up the Kuskokwim River and is received by extending a fuel hose from the barge to the tanks. The fuel is transferred from Sterling Landing using a 7000-gallon tanker truck owned and operated by TCA.Tank #1 is a domed end,horizontal,welded steel tank resting at grade with no skids or saddles.The tank is equipped with two 2”bungs and two 2” bronze bottom gate valves on one end.This tank has no manhole,but may have a 2” normal vent and two 4”flanges on top although this could not be verified due to snow cover.The overall condition of this tank is poor to fair.Tanks #2,#3 and #9 are 7000- gallon riveted railroad tank cars resting at grade.Tank #4 is a vertical,welded steel tank resting on a heavy timber pad at grade.The tank shell is equipped with a 4” flange and 4”steel valve,a 24”manway and a tank gauge.On top of the tank is a 20” manhole,4”flange with a 4”pressure/vacuum vent and a 4”"gauge cap.This tank has a ladder welded to the side and a handrail around the top.A 1”gooseneck runs from the top down the side of the tank.This tank was recently moved from the Air Force tankfarm nearby.This tank appaars to be in good condition.Tank #5 is a horizontal, welded steel tank with no skids or saddles and is resting at grade with log chocks.The tank is equipped with a 24”manhole on top and a ladder welded to one end.Directly beneath the ladder at the bottom of the tank is a 2”bung and 2”steel gate valve.This tank needs paint and appears to be in fair condition.Tanks #6 and #7 are horizontal welded steel tanks.The tanks are sat on bolt-on saddles,but are not fastened to the saddles.Both tanks are equipped with 3”bungs and 3”bronze gate valves.On top, the tanks are equipped with 20”manholes and 3”bungs with normal vents.These tanks appear to be in fair to good condition;however,they do require paint.Tank #8 is a horizontal welded steel tank on saddles;however,the saddles are not welded to the tank's belly-bands.The tank is equipped with a 3”bung with a 1-1/2”bronze gate valve.The tank has no manhole but may have a 3”bung on top,which could not be verified due to snow cover.Tank #10 is a horizontal welded steel tank resting directly at grade with log chocks.This is a domed end tank with no bungs on either end.The fittings could not be verified due to snow;however,it is believed to have two 3”bungs, one 2”bung and two 6”openings.The tank has a black mastic coating.This facility has no security fencing or lighting.No secondary containment was provided for any tanks except for Tanks #6 &#7,which are both contained within a single earthen dike. The capacity of the dike appeared to be adequate;however,the existence of a liner could not be verified due to snow cover.No fuel leaks were observed during the survey. Sent By:Alaska Energy and Engineering,;907 349 8001; s Takotna Bulk Fuel Storage Assessment Report Oct-13-99 3:02PM; Site Assessment:2/24/98 TANK FARM 2,STERLING LANDING TANK NO,DIAMETER HEIGHT/VERTICAL)GASOLINE/|CALCULATED (FT)LENGTH |HORIZONTAL HEATING CAPACITY (FT)FUEL (GALLONS) 1 10'-9”37'-6"H HF 25400 2 --H HE 7000 3 --H HF 7000 4 13'-1”12'-0"V GAS 12000 5 10'-6”31'-0”H HF 20000 6 8'27'-4"H HF 10200 7 8 27'-4"H HF 10200 8 7-11"14'-0”H GAS 5100 9 --H HF 7000 10 10'-1”40'H HF 23800 Total (gal)127700 Page 14/15 Sent By:Alaska Energy and Engineering,;907 349 B001 Oct-13-99 3:02PM; ww.bd Page 15/15 EARTHEN DIKE oie (FEED/ ©@ | Hd Lt|LSEE &[ enI A oO TOP OF RIVER BANK =LTee-ee-_---|aee _Wik "e DOE BFA -PHASE ill ="a ARTMENT SCOMMONITY ©REGIONAL AFFAIRSMIDDLE_KUSKOKWiM CLUSTER aneme ss |MESO arts DEPARTMENT OF CO AE 7 Tt tan Seat DIVISION OF ENERGYaaneCAMDING#2 Takotr2 1 OF 1 333 W.¢th AVENUE,SUITE 220 ANCHORAGE,AK 99501