PinalAirparkWater&SewerUtilityAssessment
DibbleProjectNo.:101207.02
February2013
PreparedFor:
7500NorthDreamyDrawDriveSuite200Phoenix,Arizona85020P.602.957.1155F.602.957.2838www.dibblecorp.com
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TableofContents
I. AirportDescription.......................................................................................................................................1II. ProjectGoalsandDescription.......................................................................................................................1III. Water&SewerInfrastructureIndex.............................................................................................................3
A. WaterDistributionNetwork.............................................................................................................................................31. WaterSystemInventory...........................................................................................................................................32. WaterDistributionNetworkPhotos.........................................................................................................................5
B. SewerSystemNetwork.....................................................................................................................................................71. SewerSystemInventory...........................................................................................................................................72. SewerSystemPhotos................................................................................................................................................7
IV. VulnerabilityAssessment.............................................................................................................................8A. LifeSafety&PublicHealthConcerns................................................................................................................................8
1. FireProtection/NonPotableConnection................................................................................................................82. WastewaterCollection..............................................................................................................................................9
B. SystemRedundancy&Reliability......................................................................................................................................91. WaterSupply.............................................................................................................................................................92. WaterStorage.........................................................................................................................................................103. BoosterPumpingCapacity......................................................................................................................................104. WaterDistributionSystemIntegrity.......................................................................................................................105. SewerSystem..........................................................................................................................................................10
C. Maintenance/Rehabilitation/Replacement.................................................................................................................10D. CapacityforExpansion....................................................................................................................................................11
V. Recommendations.....................................................................................................................................11
ListofFiguresFigure1AirportOverviewDrawing................................................................................................................................................2
ListofTablesTable1WaterSystemInventory....................................................................................................................................................3Table2SewerSystemInventory....................................................................................................................................................7Table3Recommendations..........................................................................................................................................................12
AppendicesAppendixAUtilityMapping,AsBuilts,OtherUtilityDataAppendixBInventoryofWaterInfrastructure&VulnerabilityAssessmentAppendixCInventoryofSewerInfrastructure&VulnerabilityAssessmentAppendixDEngineersOpinionofProbableCapitalCost
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I. AirportDescriptionPinalAirpark(AirportorMZJ)issituatedapproximatelyfivemilesnorthwestoftheTownofMaranaandapproximately30milesnorthwestoftheCityofTucson,Arizona.TheAirportisapproximatelyonemilewest of Interstate 10, just north of the Pinal/Pima County line. The elevation of the Airport isapproximately1,891feetaboveMeanSeaLevel(MSL). WhilePinalAirpark isownedbyPinalCounty,theAirportiscurrentlyleasedtoMaranaAerospaceSolutions.Pinal Airpark primarily serves as an aircraft storage andmaintenance facility forMarana AerospaceSolutions, but other users such as theDepartment ofDefense,ArizonaArmyNationalGuard, and aflighttrainingschoolutilizethefacilityaswell. TheAirport isheavilysecuredandmonitored24hoursdaily,and isnotcurrentlyconsideredapublicuse facility. The20112015NationalPlanof IntegratedAirportSystems(NPIAS)classifiesMZJasaGeneralAviationAirport.The airfield consistsofone asphalt concretepavement runway (1230) approximately6,850 longby150wide.Therunwayisservedbyoneparalleltaxiway,andfourconnectingtaxiways.AllfacilitiescanbeseenintheAirportLayoutDrawing(assubmittedbySFCEngineeringCompany1991)inAppendixA.Anaerial imageof thesite titled,AirportOverviewDrawing, is includedaspage2of thisreport.ThecurrentAirportReferenceCode(ARC)forMZJisApproachCategory/DesignGroupDV.
II. ProjectGoalsandDescriptionThePinalAirparkwaterandwastewaterutilitieswilleventuallytransitionfromoperation,maintenanceandmanagementbytheonsitetenanttooperationandmaintenanceandmanagementbyPinalCounty.In advance of the transition, Pinal County desires to complete a system inventory and vulnerabilityassessmentoftheexistinginfrastructuresystems.
The intentof this assessment is todocument the current condition andoperationof thewater andwastewatersystemsandtoprovideguidancefordevelopingaprioritizedapproachandconceptualcostsforsystemanalysesandimprovements.Thegoalsofthisstudyareto:
Indextheexistingwater&sewerinfrastructure Assessthevulnerabilityofthewater&sewerinfrastructure Providerecommendationsforfutureactions
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III. Water&SewerInfrastructureIndexMapping provided byMarana Aerospace Solutions (MAS)was used to index the existingwater andsewernetworks.The listwassupplementedwith informationgatheredduringasitevisitattendedbyrepresentatives from Dibble Engineering, Pinal County, andMAS on August 30, 2012. ThemappingprovidedisincludedinAppendixA.
A. WaterDistributionNetworkTheexistingwatersystem,asdescribedbythecurrenttenantsoperatingstaffandschematicdrawings,generally consists of two (2) active wells, a storage reservoir, three (3) booster pumps, ahydropneumatic tankandaircompressor,achlorinedisinfection system,approximately23,000 linearfeet of six to twelveinch distributionmains, and approximately 35 fire hydrants. Annual and dailydemands of the water network were not available at the time of this assessment and were notevaluated.
1. WaterSystemInventoryThedistributionnetworkoperatingpressureasobservedduring thesitevisitandasexplainedby theAirportoperationsstaffrangesapproximatelybetween3050psi.Onewellfeedsasteeltankreservoir.Boosterpumpsdrawfromthereservoirtoahydropneumatictankandthentothedistributionpiping.Asecondwellthatproducesnonpotablewaterconnectstotheyardpipingbetweenthereservoirandthepumphouse,butisisolatedbyaclosedgatevalve.Table1belowprovidesamorepreciseinventoryofthesystem.
Table1WaterSystemInventory
Item Description YearofInstallation
WellNo.1
Well#1produces750gpmofnonpotablewaterthatcontainshighnitratelevels.ADWRRegistrationNo.55617486.ThepumpisaFairbanksMorseverticalturbine,100HP,220/440Volt,3Phase.
1942
WellNo.2Well#2wascappedin1992andisnolongerinuse.ADWRRegistrationNo.55617487.
1942
WellNo.3
Well#3istheprimarywellthatservestheAirportandproduces250gpm.ADWRRegistrationNo.55533158.Inapproximately2009anewpump,motor,andcasinglinerwereinstalled.ThesubmersiblepumpisSimmonsmanufacture,460Volt,60Amp.
1992
BoosterPumps
The20HP,220/440VoltmotorsareFairbanksMorsemanufacture.ThepumpsareAmericanMarshcentrifugalpumps,eachratedfor670gpmat81feetofTotalDynamicHead(TDH).Thepumpsaresetforaminimumruntimeof2minutes.
Unknown(motors)2002(pumps)
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ReservoirThe250,000galloncapacitysteeltankreservoirwasmanufacturedbyBrownTankandSteel,Phoenix,Arizona
1984
YardPiping
Thepipingbetweenthereservoirandthepumphouseandthebetweenthepumphouseandthehydropneumatictankisweldedsteelpipe.Originalpipingisstillinuseaswellasnewpipingthatwasreplacedasrecentlyas1992withtheinstallationofWellNo.3.
1940s1992
HydropneumaticTank
ThesteelhydropneumatictankwasmanufacturedbyAdkinsSteelMfg,isdesignedforaworkingpressureupto125psi,andwasrefurbishedin2002.AccordingtomappingdatedOctober1962,theoriginaltankhada5,000galloncapacity.
1972,2002
AirCompressorTheaircompressorforthehydropneumatictankisa3HP,beltdrivewithDaytonmotor.
Unknown
ChlorinationSystem
Thechlorinationsystemisagranularcalciumhypochloritefeedsystem,whichoperatesonatimedelaytodosechlorineaswaterispumpedtothedistributionsystem.
2002
DistributionSystemPiping
Thedistributionpipingisreportedtobecastiron.Wherelinebreakshaveoccurred,segmentshavebeenreplacedwithductileironpipe.
1940s
FireHydrants
Thehydrantsattheairportarenotofuniformmanufacture.Operationsstaffindicatedthatapproximately80%oforiginalhydrantshavebeenreplaced.Someoftheoriginalhydrantsareoutofservice.DrybarreltypehydrantmanufacturersincludeA.P.SmithMfg.Co(original),AmericanFlowControlandClow.Operationsstaffindicatedthatapproximately4flushtypehydrantsarestillinusealongtheflightline.
1940s2000s
Valves
Thedistributionsystemhasisolationgatevalvesthroughoutthenetwork.ThecheckvalveatWellNo.1wasreplaced2008.Checkvalvesatthepumphousewerereplacedinapproximately2002.
1940s2008
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2. WaterDistributionNetworkPhotos
WellNo.3Surfacecorrosionisvisibleonaboveground Yardpipingcorrosionisvisiblestainlesssteelyardpipingandvalves Hydropneumatictank
WellNo.1Notinservicedueto Boosterpump&motor highnitratelevelsinwater
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250,000gallonsteeltankreservoir 250,000gallonsteeltankreservoir
Newerhydrant Newerhydrant Originalhydrantoutofservice
Flushtypehydrant Flushtypehydrant
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B. SewerSystemNetworkThe existingwastewater system generally consists of a selfcontained stabilization/evaporationbasinsystem(onelined,combinedbasinandoneunlineddualbasinsystem),approximately38,000linearfeetof six to 12inch gravity sewers, approximately 40manholes and approximately 75 sewer cleanouts.Annualanddailyflowratesofthesewersystemwerenotavailableatthetimeofthisassessmentandwerenotevaluated.
1. SewerSystemInventoryTable2belowprovidesaninventoryofthesewercollectionanddisposalsystem.
Table2SewerSystemInventory
Item DescriptionYearof
Installation
SewerPipingSewerpipingvariesfrom6to12indiameterandisoriginal.Pipematerialisvitrifiedclaypipe(VCP),exceptwherepolyvinylchloridepipehasbeenusedinnewconstructionaftertheoriginalinstallation.
1940s
SewerManholes Manholesarebrickandmortarconstructionandareoriginal. 1940s
SewerCleanouts Cleanoutsarelocatedthroughoutthesewercollectionsystem 1940s
StabilizationPonds
Oneofthestabilizationpondshasrecentlybeenlinedwithahighdensitypolyethylene(HDPE)liner.Additionalevaluationoftheponds,includingdeterminingtheircapacityisnotpartofthissystemevaluation.
1940s2000s
2. SewerSystemPhotos
ManholedownstreamofBldgsT33&T34 Manholealongmainlinetostabilizationponds SeventhSt&CenturyBlvd
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Manholewithlittletonoflow,filledwithsediment Concretereplacementmanholelid NorthofBldgT89 NorthofBldgT89
IV. VulnerabilityAssessmentThe water and sewer infrastructure are evaluated based on the criteria discussed below. Thevulnerability of the system components are identified inAppendixB andAppendixC. The items arediscussedbelow.
A. LifeSafety&PublicHealthConcerns
Several itemsobservedraise lifesafetyandpublichealthconcernsregardingfireprotectionandwaterquality. Infrastructure identifiedwiththisvulnerability iscriticaltotheoperationofthewaterandfireprotectionsystemsandcomponentsrelatedtotheprotectionofpublichealth.
1. FireProtection/NonPotableConnectiona. Pressure
It isunknownhowthesystemwillrespondtoasubstantialfireflow.Thecurrentoperatingpressure isset intherangeof30 50psi,whichmaynotbesufficienttomeetfireprotectionrequirementsatalllocationswithinthesystem.TheArizonaDepartmentofEnvironmentalQuality,EngineeringBulletin10,Guidelines for the Construction ofWater Systems, Chapter 7.C.2 requires that public water supplysystemsmaintain20psiatall locationsandunderallconditions, includingfireflow.AppendixBofthe2012InternationalFireCodeasadoptedbyPinalCountysetsforthrequirementsforfireflow.Iftheoperatingpressureneedstobeincreasedtomeetfireprotectionorotherrequirements,thenthesystemmayexperienceanincreasedfrequencyofpipefailuresandleaks.
AWaterMasterPlan is recommended to evaluate the fire flow andpressureneeds and thecapabilityoftheexistinginfrastructuretomeetthepressurerequirements.
b. DurationThe steel tank reservoirmay not have sufficient capacity tomeet fire flow duration requirements.AppendixBofthe2012InternationalFireCodeasadoptedbyPinalCountyestablishesfireflowdurationrequirements. Ifthestoragecapacity is insufficient,thenthesystemcanbesupplementedbythe250gpmpumpingcapacityofpotablewater fromWellNo.3and the750gpmpumpingcapacityonnonpotable fromWellNo.1. Inorderto feedthenetwork fromWellNo.1,agatevalvemustbeopenedmanuallyatthepumphouse.IntroducingnonpotablewaterproducedfromWellNo.1willrenderthe
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distribution network nonpotable until the lines are flushed and disinfected and meet ArizonaDepartmentofEnvironmentalQuality(ADEQ)waterqualitystandards.Ifthetankstorageisinsufficientorifwellorboosterpumpsfail,thenadequateflowandpressuremaynotbeachievedatthehydrants.
AWaterMasterPlanthataddressesrequiredfireflowdurationandthesystemsabilitytomeetthedurationrequirementisrecommended.
c. HydrantSpacingHydranttypeandspacingmaynotbesufficienttomeetcurrentfireprotectionstandards.AppendixCofthe 2012 International Fire Code as adopted by Pinal County establishes fire hydrant spacingrequirements. The existing hydrants in the network are not of uniformmanufacture, some of thehydrantsat theAirportareoutof service,andmosthave receivedminimalmaintenance.Thismakesspare parts stocking and periodicmaintenancemore difficult and increases the potential for failureduringadverseoperating conditions. Ifexistinghydrants thatare stilloperabledonotmeet requiredhydrantspacing,thenadequatefireflowprotectionmaynotbeavailablewhereneeded.
DevelopingaWaterMasterPlanisrecommendedtoidentifyhydrantspacingrequirementsandthesystemscomplianceornoncompliancewiththatspacing.
ItisrecommendedthattheAirportadoptuniformstandardsforhydrants,suchasAWWAC502.2. WastewaterCollection
Theexistinggravitysewercollectionsystem isoperational.Typicalsewerpipelineconstructionofthe period utilized practices thatmay result in significant system leakage. Leaks can occur atseparatedjoints,missinggasketsatjoints,andatcrackedorbrokenpipes.Leachatefromaleakingsewersystemhasthepotentialtoeventuallycontaminatetheaquiferandgroundwatersupply.
Aconditionassessmentof theexisting sewer system is recommended to identify locationsofleaksandbrokenpipes.
ASewerMasterPlan isrecommendedtobedevelopedtoensurepipesizes,slopes,andcoveraresufficientfortheneedsoftheAirport.
B. SystemRedundancy&ReliabilityThe system was also evaluated for redundancy and its reliability to meet required demands.Infrastructureidentifiedwiththisvulnerabilityisnecessaryforthesystemtocontinueoperationsduringfailureelsewhereinthesystem.
1. WaterSupplyCurrently,thesystem issuppliedbyonewellthatproducespotablewater,WellNo.3.Asecondwell,WellNo.1, isavailable,butproducesnonpotablewaterwhich, if introduced to thenetwork,wouldresultinnoncompliancewithADEQdrinkingwaterqualityregulations.
AWaterMasterPlan is recommended thataddresses redundancyof thenetwork,whichmayincludeasecondpotablewaterwellthatprovidesaredundantwatersupply.
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2. WaterStorageThesystemhasonesteeltankreservoir.Withoutdemanddataormetering,theadequacyoftheexistingstoragetanktomeetdiurnalsupplyandfireflowdurationdemandrequirementsisunknown.
A Water Master Plan is recommended that addresses the adequacy of the water storagereservoirtomeetcurrentdomesticandfireflowdemands.3. BoosterPumpingCapacity
Threeboosterpumpsprovideforredundantoperationifpumpfailureoccursorifonepumpisremovedformaintenance.Capacity for thepumps tomeet fire flowpressure requirements isunknownat thistime. As the booster pump system continues to age, obtaining and stocking replacement partswillbecomeincreasinglymoredifficult.Thepumpmotorsareacrossthelinetypewhichcausemorestressonthepumpshaftthansoftstartertypepumpmotorsthatareavailabletoday.
AWaterMasterPlanisrecommendedtodetermineboosterpumpingcapacityneeds. Anewboosterpumpstationwithcomponentsthatmeetcurrentstandardsisrecommended.
4. WaterDistributionSystemIntegrity
Sufficientloopingandisolationabilitymaybepresenttoallowisolationintheeventofmainbreaks. AWaterMasterPlan is recommended todetermine the capabilityof theexistingnetwork to
deliver required domestic and fire flow demands. Frequency of pipe failures in the existingsystemmayincreaseastheoperatingpressureofthesystemisincreased.5. SewerSystem
Gravitysewerstypicallydonothaveredundancy,andamaintenanceprogramshouldbedevelopedandimplemented toensureproperoperation.A conditionassessment is recommended todetermine thereliabilityofthesewernetwork,thatthesystemisfreeofclogs,debrisandcanconveywastewaterflowwithouthindrance.
C. Maintenance/Rehabilitation/ReplacementInordertoprovideareliablewatersystemandsewersystem,newandexistinginfrastructuremustbemaintained.Muchoftheexistingwaterandsewerinfrastructurehasmetorexceededitsdesignlifeandshouldbereplaced.Componentssuchasthewell,storagetank,andboosterpumpstationarecriticaltotheoperationofthewatersystemandshouldbemaintainedandreliable.Componentssuchashydrantsandpipingcanbereplacedmoreeasilyintheeventthatafailureoccursorapipebreaks.Anoperationsandmaintenanceprogram shouldbeprepared thatoutlinesmechanicalcomponents tobeexercised,linestobeflushed,andpipestobereplacedtoassistinprovidingareliablenetwork.
A standard maintenance, condition assessment, and rehabilitation/replacement program isrecommendedforallinfrastructure.Theprogramshouldinclude:
o Periodicconditionassessmento Operatingequipmentefficiencyevaluationo Regularandperiodicmaintenanceprogramo Standardizedrecordkeepingprocedures,includingoperatorchecklists
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D. CapacityforExpansionConsiderationshouldbegiventotheAirportsplansforgrowthandexpansion.Ifportionsoftheexistingnetworkrequirereplacement,then itcanbecosteffectivetoperformsystemupgradesforcapacityatthetimeofrepairsandreplacements.KnowingwhatthefutureplansforgrowtharefortheAirport isneededtoplanhowtomeetthefutureneedsofthefacility.
AWaterMasterPlanisrecommendedthataddressesthecapacityoforexpansionstotheexistingsystemtomeetthefuturedemandsandneedsoftheAirport.
ASewerMasterPlanisrecommendedthataddressesthecapacityoforexpansionstotheexistingsystemtomeetthefuturedemandsandneedsoftheAirport.
V. RecommendationsThis report indexes the existing infrastructure and assesses the risk of not taking action on variouscomponentsofthenetwork.Recommendationshavebeendevelopedbasedonthevulnerabilityofthesystemsincludingconsiderationofpotentiallifesafetyconcerns.Therecommendationshavebeengivenpriorityratingsofrecommendedactionsthatandcanbeaccomplishedtogether.Note that thewater and sewer systems are currently in operation and do not appear to have anyimmediate catastrophic vulnerabilities as pumps have been replaced and aremaintained, piping hasbeenreplacedasneeded,sewermanholesthatareinusearenotmissingbricksandhavemortarstillinplace.Inordertoavoidcatastrophicfailuresinthesystem,itisrecommendedthattheCountynotdelayfurtherassessmentoftheinfrastructureandmakeupgradesbasedontheprioritylistbelow.Table3on the followingpage summarizes theproposed recommendationswith conceptual costs foreachpriority group. The conceptual capital costof each recommendation is itemized inAppendixC.Priorityratingsaredefinedasfollows:
A=Immediate B=ShortTerm C=LongerTerm
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Table3Recommendations
RecommendationNo.
Priority DescriptionCapitalCost
1 A
PrepareWaterMasterPlanofAirportwithhydraulicmodelingoftheexistinginfrastructureandfutureexpansionofwaterdistributionnetwork,includingfireprotectionneeds.Valverimsandtopofnutelevationsshouldbesurveyedtodevelopanaccuratemapofexistinginfrastructure.Aspartofthemodelingeffort,performhydrantflowteststodeterminethecapacityofthenetworkandiftheexistinginfrastructuremeetsrequiredfireflowrequirements.Leakagetestsshouldalsobeperformedtoidentifywhichportionsofthenetworkexperienceexcessiveleaking.ThemasterplanshouldalsoincludepreparationofstandardstobeadoptedbytheAirparkforfuturerepairs,replacements,andotherimprovements.ThewaterdistributionnetworkshouldcomplywithADEQBulletin10andthe2012InternationalFireCode.
$200k
2 B
WellRedundancyProvideasecondwellthatproducespotablewaterormodifyortreattheexistingWellNo.1toproducepotablewater,AmericanWaterWorksAssociation(AWWA)A100.
$300k
3 B
BoosterPumpFacilityTheboosterpumpfacilityandappurtenances,includingpumps,motors,valves,piping,hydropneumatictank,chlorinationsystemhaveexceededareasonabledesignlifeforamaintainedsystem.Sincethefacilityisoperational,theneedforreplacementisnotimmediate,butshouldbeplannedforinthenearfuture.ThenewpumpstationshouldmeettheappropriateAWWAStandards.
$1.0M
4 B
HydrantReplacementProgramTheAirporthasseveraltypesofhydrantsthroughoutthedistributionnetwork,severalofwhicharenolongeroperational.AhydrantreplacementprogramshouldbedevelopedtobringthespacingandtypeoffunctionalhydrantsintocompliancewiththeWaterMasterPlan.DrybarrelhydrantsshouldcomplywithAWWAC502.
$300k
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5 C
Valve&WaterLineReplacementProgramValvesthatarenolongeroperationalshouldbereplacedtobringthenetworkintocompliancewiththeWaterMasterPlansothattheisolationneedsoftheAirportaremet.Astheagingwaterlinesinthedistributionnetworkfail,aplanshouldbedevelopedtoreplacetheinfrastructurepriortofailure.Planningwaterlineshutdownsforreplacementistypicallylessdisruptiveandlesscostlythanrepairingwaterlinebreaksastheyoccur.Forexample,theCountymayimplementareplacementprogramthatreplaces10%oftheexistinginfrastructureeachyearfor10yearsuntil.Alternatively,theCountymaydesiretoincludewatermainreplacementandupsizingbasedonthefutureneedsdescribedintheWaterMasterPlan.
$3M(maybe
brokenintoamultiyearprogram)
6 C
Expansion/FutureGrowthAdditionalwaterdistributionshouldbeconstructedtomeetthefutureexpansionoftheAirpark.TheexpansionoftheAirparkwaterdistributionnetworkshouldbeoutlinedintheWaterMasterPlanandbebasedontheAirportMasterPlan.Infrastructureneededforexpansionmayinclude:
Increasingdistributionsystemcapability Additionalboosterpumpingcapacityand
associatedinfrastructure(disinfection,hydropneumatictank,etc.)
Additionalstoragecapacity Additionalsupplycapacity(newwells)
TBD
7 C
TankConditionAssessmentAirportstaffhaveindicatedthatthesteelstoragetankhasnotbeeninspectedorleaktestedsinceinstallation.Thetankshouldhaveaconditionassessmentperformed,includingtheconditionofthecoatingandaleaktestinaccordancewithAWWAManualM42.AnoperationandmaintenanceprogramshouldbeimplementedinaccordancewithAWWAM42.
$60k
8 A
ValveExercise&HydrantFlushingProgramAnoperationandmaintenanceprogramforvalveexercisingandhydrantflushingshouldbeimplementedinaccordancewithmanufacturerrecommendations,AWWAC502,andAWWAC509.
$10k/year
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9 A
SewerConditionAssessment Theexistingsewermanholesandcleanoutsshould
besurveyedwithrimandinvertelevationsidentifiedtodevelopanaccuratemapofexistinginfrastructure.
TheexistingsewernetworkofpipesandmanholesshouldbeinspectedandassessedusingNasscosPipelineAssessmentandCertificationProgram(PACP).
Performahydraulicanalysistodeterminethecapacityoftheexistingsewernetwork.
$200k
10 A
SewerMasterPlan InconjunctionwiththeWaterMasterPlan,aSewerMasterPlanshouldbepreparedtoensurepipesizes,slopes,andcoveraresufficientforcurrentandfutureneedsoftheAirport.ExistingandfuturesewerconstructionshouldcomplywithArizonaAdministrativeCode(AAC),Title18,Chapter9.ThecollectionanddisposalsystemshouldbeconfirmedforcompliancewiththeAAC,Title18,Chapter9,Articles1and3.
$100k
11 B
SewerRepair/Maintenance/AbandonmentAprogramshouldbepreparedtoaddresstherecommendationsfromtheSewerConditionAssessmentandtheSewerMasterPlan.TheCountymaydesiretoallocatefundstoperformapercentageofthetotalrecommendedworkeachyearsimilartotheValve&WaterLineReplacementProgram.
Repair&replacesewersegmentsandmanholesasneededbasedonSewerConditionAssessment,includingpipethatisoutofgrade.
RemovedebrisandaccumulatedsolidsfrommanholesandsewersasobservedduringSewerConditionAssessment.
AbandonexistingsewersthatarenotinuseandareneededpertheSewerMasterPlan.
TBD
The next steps the County should take to ensure safe and reliablewater and sewer systems are toprepareWaterand SewerMasterPlans.Understanding the current capabilitiesand capacitiesof thewaterand sewer systems isneeded toproperlypreparemasterplanand toconfirm that thecurrentfacilityandfireprotectionrequirementscanbemetbytheexistinginfrastructure.
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APPENDIXAUtilityMapping,AsBuilts,OtherUtilityData
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APPENDIXBInventoryofWaterInfrastructure&VulnerabilityAssessment
LifeSafety/PublicHealth
Redundancy/Reliability
Maintenance/CapacityforExpansion
NotinUse
OcotilloBlvd&DarrBlvd 6"watermain 6"maintotheeast(ACP) X Cut,plugandabandonpipeinplaceWatermeter Notinuse X Removemeter&vault
6"watermainfromintersectionNWtoPumpHouse
TeeaftermetersplitsflowtonetworkandtopumpTheAirparkdistributionnetworkisbedependentonthewellwatersupply.Notethatthisportionofthenetworkdoesnothaveanyapparentservices.
X
Cut,plugandabandonpipeinplace6"&8"watermainfromintersectionwestandNWtoSWsideofPumpHouseand12"x12"x10"x8"cross
Feedtoformerhousingandmeter,includesasinglefirehydrant
XCut,plugandabandonpipeinplaceatcross
WellPump(Primary) Well#2Well#2wascappedin1992andisnolongerinuse X X ConfirmwellabandonmentisrecordedwithADWR
andiscompliantwithenvironmentalstandards
Pump(Well#3)
460V,60A,submersiblepumpnewpump,motorandlinerinstalled2009,yields250gpm
Ifwellpumporappurtenancesfail,thenAirparkdistributionnetworkwillbewithoutapotablewatersupply
X X X Confirmwellissufficienttomeetdemandsofnetwork.Considerdrillingsecondarywellthatispotable.
Abovegroundpiping pipingandboltsshowcorrosion X X X Remove&replace12"belowgroundpiping pipingfeeds250,000gallonstoragetank X X X Remove&replace
PumpHouse Well#1
Well#1isbackuptothenetwork,thewatercontainshighnitratesandisthereforenotpotable.TheWell#1pipingisconnectedtothedistributionnetworkatateeoutsideoftheboosterpumphouse.Separationisprovidedbyaninlinegatevalvesetatgradeatthetee.
IntheeventWell#3isdisabledorinsufficienttosupplyfireflowdemands,Well#1mayneedtobeused.
X X
Aseparatewellortreatmenttothiswellthatmeetspotablewaterrequirementsshouldbeconsideredasaredundantsource.Anisolationandflushingplanshouldbedevelopedintheeventnonpotablewaterentersthedistributionnetwork.Theseparationbygatevalveshouldbeevaluatedforcrosscontaminationcompliance.
Pump(Well#1) Yields750gpm X
PumpHouseStructureThestructureisoriginalwithsomerepairs/modifications Thebuildingmaynotmeetcurrentbuildingcodes. X X
Remove&replacethepumphouse
Boosterpumps
Theoriginalpumpswerereplacedinapproximately2002,thecenterpumpwasrebuiltin2012.
X X X
Pumpmotors
Theoriginal20HPpumpmotorsareinuseandarerebuiltasneeded
Thepumpsarenotequippedwithsoftstartmotors,whichcreatesapotentiallyunsafeconditionwithpumpsstartingatfulltorque.
X X XReplacepumpmotorswithsoftstartmotors
250,000gallontank
Thetankwasinstalledin1984.Thetankhasnotbeenleaktested,recoated,orinspectedsinceinstallation.
Iftankfailsoristakenoutofserviceformaintenance,thentheAirparkdistributionnetworkwilldependentonthewellpumpforwatersupply
X X X
5000gallonhydropneumatictank
Arefurbishedtankwasinstalledinapproximately2002.Thetankhasanairreleasevalvethatisnotinuse.
Thehydropneumatictankallowstheboosterpumpstoengageforaminimumduration.Intheeventthetankfails,thepumpswillengagetomaintainsystempressure.Withoutahydropneumatictank,thepumpwilloperateondemandresultinginshortcyclingthepumpwhich,cancauseexcessivewearonthepumpsandmotors.
X X X
Chlorinationinjectionsystem&aircompressor Installed2002 X X X
Electricalequipment
Electricalenclosures,switchesandcircuitbreakersappeartobeoriginalwithnewercontactsandstarters
X X XAnelectricalengineershouldevaluatetheconditionoftheelectricalgearandwiringtoensureoperationsmeetcurrentcoderequirements.
Valves Checkvalveshavebeenreplacedinpast10years, X X X
WaterInfrastructureInventory&AssessmentVULNERABILITY
LOCATION COMPONENT DESCRIPTION RISKIFNOACTIONISTAKEN RECOMMENDATION
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LifeSafety/PublicHealth
Redundancy/Reliability
Maintenance/CapacityforExpansion
NotinUse
WaterInfrastructureInventory&AssessmentVULNERABILITY
LOCATION COMPONENT DESCRIPTION RISKIFNOACTIONISTAKEN RECOMMENDATION
Abovegroundpiping
Pipingandboltsshowsignsofcorrosion.Thecoaltarwrapiswearingoffoftheweldedsteelpipe.
Iftheabovegroundpipingfails,thenthesupplyfromthewellandthestoragetankwillbecutoffandthedistributionnetworkwillbeoutofservice
X X X
12"watermaintonetworktoSW
12"watermainextendsSWfromPumpHousetoDarrBlvd.Nohydrantsorotherconnectionsareapparent
Thislinefeedsthedistributionnetwork.Iffailureoccurs,waterservicewillbyunavailableuntilpiperepairisperformed
X X X
12"watermaintonetworktoNW
12"watermainextendsNWfromPumpHousealongChollaBlvdtoFirstSt,NEalongFirstSttoOcotilloBlvd,thenNWalongOcotillotoadeadendeastofSecondPlace
Thislinehasnoapparentservices X
Cut,plugandabandonpipeinplace
DarrBlvdfromPumpHousetoSixthSt 10"watermainfromPumpHousetoFourthSt
ThislineishalfofalooptothelinethatservesbuildingsT21T52
Iffailureoccurs,thesystemislooped,sobuildingscanstillreceiveservice
X X
8"watermainfromFourthSttoSixthSt 8"x6"TeeatSixthStreetandDarrBlvd X X6"feedtoswimmingpooleastofThirdSt Teeoffof10"main Poolisnotinuse XWaterservicetoBldgT19 Servedby8"main X
SixthSt&SeventhStloop,NEofDarrBlvd 6"watermain
ThislinehasserviceconnectionstobuildingsT21T52,T54,T93,T96,&6hydrants
Iffailureoccurs,thesystemislooped,sobuildingscanstillreceiveservicedependingonthelocationofthebreakandisolationvalves
X X
SeventhStfromDarrBlvdtoCactusBlvd 6"watermain
ThislineservesBldsT18,T56andasinglehydrant,thenconnectstoa8"x6"TeeatSeventhSt&CactusBlvd
Iffailureoccurs,thesystemislooped,sobuildingscanstillreceiveservicedependingonthelocationofthebreakandisolationvalves
X X
CactusBlvdfromBldgT61(SecondSt)toNinthSt 8"mainNWofSeventhSt Thissegmentfeeds2hydrantsanddeadendsatNinthSt
Intheeventoffailure,thetwohydrantswillbeoutofservice
X X
8"mainSEofSeventhSt
Thissegmenthas2connectionsseveraldistributionnetworkconnections,servesseveralbuildings,includinga2storyofficebuildingandfeeds5hydrants
Iffailureoccurs,thesystemislooped,sobuildingscanstillreceiveservicedependingonthelocationofthebreakandisolationvalves
X X
8"x8"TeeatSixthStconnectsto8"watermainthatextendsSWandconnectstoaparallel8"mainSWoftheofficebldg
Iffailureoccurs,thesystemislooped,sobuildingscanstillreceiveservicedependingonthelocationofthebreakandisolationvalves
X X
8"x8"TeeatFifthStconnectsto8"watermainthatextendsNEtoCenturyBlvd
Iffailureoccurs,thesystemislooped,sobuildingscanstillreceiveservicedependingonthelocationofthebreakandisolationvalves
X X
8"x8"TeeatThirdStconnectsto8"watermainthatextendsSWandconnectstoaparallel8"mainSWofthebldgT61
Iffailureoccurs,thesystemislooped,sobuildingscanstillreceiveservicedependingonthelocationofthebreakandisolationvalves
X X
DibbleEngineering Page2of3 2/13/2013
LifeSafety/PublicHealth
Redundancy/Reliability
Maintenance/CapacityforExpansion
NotinUse
WaterInfrastructureInventory&AssessmentVULNERABILITY
LOCATION COMPONENT DESCRIPTION RISKIFNOACTIONISTAKEN RECOMMENDATION
CactusBlvdfromBldgT61(SecondSt)toTeebetweenBldgsT80andT68 8"watermain
Thissegmentservesseveralbuildings,feeds3hydrantsandispartofaloop.
Iffailureoccurs,thesystemislooped,sobuildingscanstillreceiveservicedependingonthelocationofthebreakandisolationvalves
X X
CactusBlvdfromTeebetweenBldgsT80andT68toCenturyBlvd&FirstSt 6"watermain
ThislineextendNE,theneastfromthe8"x6"TeeatBldgT61,servesBldgT70,andconnectstoand8"watermaininCenturyBlvd
Intheeventoffailure,BldgT70maybewithoutservicedependingonisolationvalvelocationsandthebreaklocation
X X
PumpHousetoTeebetweenBldgsT80andT68 12"watermain(LINEA)
Thislineconnectstothe8"watermaininCenturyBlvdata12"x8"Tee,connectstothe12"x12"x10"x8'crossatPumpHouse,andservesasinglehydrantatCenturyBlvd
Thislinefeedsthesouthwesternportionofthedistributionnetworkloop.Iffailureoccurs,watermustservetheAirparkviathewatermaininDarrBlvd
X X
CenturyBlvdfromLINEAtoThirdSt 8"watermain
Thissegmentconnectstothe12"watermainfromPumpHouse(LINEA),the6"watermainatFirstSt,andadeadendlineonSecondStfromCenturyBlvdtoDarrBlvd.Thelineserves4hydrantsanddeadendsNWofThirdSt.
IntheeventoffailureNWofFirstSt,thehydrantswillbeoutofservice.Theremainderofthelineislooped.
X X
TeebetweenBldgsT80andT68atCactusBlvdtoEleventhSt,NWofBldgT62 8"watermain
Thissegmentservesnumerousbuildings,serves10hydrants,andconnectstotheDistributionnetworkatan8"x8"TeeatThirdStandan8"x8"TeeatSixthSt.An8"deadendlineextendsNEatEleventhSttoCactusBlvdanda4"inecontinuespastEleventhStreettotheDisposalPlant
Iffailureoccurs,thesystemislooped,sobuildingscanstillreceiveservicedependingonthelocationofthebreakandisolationvalves.IffailureoccursNWofSixthSt,thenbuildingsinthatareaandthe4"DisposalPlantlinewillbeoutofservice.
X X
DibbleEngineering Page3of3 2/13/2013
DibbleEngineeringFebruary2013
PinalAirparkWater&SewerUtilityAssessment
APPENDIXCInventoryofSewerInfrastructure&VulnerabilityAssessment
LifeSafety/PublicHealth
Redundancy/Reliability
Maintenance/CapacityforExpansion
NotinUse
StabilizationPondstoEleventhSt&CenturyBlvd 12"Sewer
Seweroutfalltoevaporationpondnomanholeswerevisiblealongthissegment
Sewerleakagemayhaveadverseenvironmentalimpacts,clogged,broken,oroutofgradesewersmayimpedeflowTypicalallcomponents
X XCCTVsewer,performconditionassessmentandhydraulicanalysis
CenturyBlvdEleventhSttoFifthSt 12"Sewerwithmanholes
ManholeslocatedatEleventhSt,TenthSt,NinthSt,EigthSt,SeventhSt,FifthSt
X CCTVsewer,performconditionassessmentandhydraulicanalysis
8"SewerwithcleanoutsSewerextendstoNWalongTenthStandservesBldgT61,T62&T86
X CCTVsewer,performconditionassessmentandhydraulicanalysis
8"SewerwithcleanoutSewerextendsSWalongNinthStandstubstoacleanoutnobuildingsareserved Nobuildingsareservedbythissewer
X XAbandonsewerinplace
8"Sewerwithcleanouts
SewerextendstoNWalongSeventhSttoCactusStandservesT17&T60;alsohasastubandcleanoutalongCactustoNW,butnobuildingsareserved
XCCTVsewer,performconditionassessmentandhydraulicanalysis
8"Sewer&6"Sewerwithcleanouts
FromthemanholeatCenturyBlvdandFifthSt,an8"sewerextendsSWalongFifthSttoacleanoutatCactusBlvd.Fromthecleanout,a6"lineextendssouthtoanothercleanoutandservicestoBldgT59&theOfficeBldg
XCCTVsewer,performconditionassessmentandhydraulicanalysis
CenturyBlvdatSixthSt 8"Sewerwithmanholes
SewerextendsfrommanholeatCentury&SixthStNEtoamanholeatDarrBlvd.ThislinehasonecleanoutandhasaserviceconnectiontoBldgT18
XCCTVsewer,performconditionassessmentandhydraulicanalysis
6"Sewerwithcleanouts
FromthemanholeatDarrBlvd&SixthSt,a6"sewerextendsalongDarrBlvdtoFifthSt,andservesseveralbuildingsinthearea.Thelineshave7cleanoutsandserveBldgsT19,T20,T87
XCCTVsewer,performconditionassessmentandhydraulicanalysis
CenturyBlvdfromFifthSttoThirdPl 10"Sewerwithmanholes ManholeslocatedatFourthStandThirdPl
X CCTVsewer,performconditionassessmentandhydraulicanalysis
CenturyBlvdatThirdPl 6"Sewerwithcleanouts
FromthemanholeatThirdPl,thesewerextendsNWtoCactusBlvdtoacleanout,thenwesttoadeadendcleanoutandsouthtoacleanoutandservicetoBldgT58
XCCTVsewer,performconditionassessmentandhydraulicanalysis
8"SewerwithcleanoutsFromthemanholeatThirdPl,thesewerextendsNEtoDarrBlvdtocleanout. Nobuildingsareservedbythissewer X X Abandonsewerinplace
6"Sewerwithcleanouts
Fromthe8"cleanoutatDarrBlvd,thesewerhasawyeconnectionandreducestotwo6"sewers.One6"sewercontinuestotheNEtoacleanout,thenNWtoanothercleanout.Thesecond6"lineextendsSWpastThirdStandendsatacleanoutwithoutservinganybuildings. Nobuildingsareservedbythissewer
X X
Abandonsewerinplace
CenturyBlvdfromThirdPltoFirstSt 8"Sewerwithcleanoutsandmanholes
FromthemanholeatThirdPl,thesewerextendsSEwith3cleanoutstoamanholeatSecondSt.SWofthethirdcleanoutisastubwithacleanoutthatservesnobuildings.
X CCTVsewer,performconditionassessmentandhydraulicanalysis
8"SewerwithmanholesFromthemanholeatSecondSt,thesewerextendstoamanholeatFirstSt X
CCTVsewer,performconditionassessmentandhydraulicanalysis
SanitarySewerInfrastructureInventory&Assessment
LOCATION COMPONENT DESCRIPTION RISKIFNOACTIONISTAKEN
VULNERABILITY
RECOMMENDATION
DibbleEngineering Page1of3 2/13/2013
LifeSafety/PublicHealth
Redundancy/Reliability
Maintenance/CapacityforExpansion
NotinUse
SanitarySewerInfrastructureInventory&Assessment
LOCATION COMPONENT DESCRIPTION RISKIFNOACTIONISTAKEN
VULNERABILITY
RECOMMENDATION
CenturyBlvdatSecondSt 6"Sewerwithcleanoutandmanhole
FromthemanholeatSecondSt,a6"sewerextendsNEtoacleanoutpastDarrBlvd.Fromthecleanouta6"sewerextendsNWtoamanholeandaserviceconnectiontoBldgM615(SwimmingPool) Nobuildingsareservedbythissewer
X X
Abandonsewerinplace
8"Sewerwithcleanoutandmanhole
FromthemanholeatSecondSt,an8"sewerextendsSWtoacleanout,thenamanholeSWofCactusBlvdbetweenBldgsT63&T64
X CCTVsewer,performconditionassessmentandhydraulicanalysis
6"Sewerwithcleanouts
Fromthe8"sewerSWofthemanholeatSecondSta6"sewerextensiontothewestconnectsto3cleanouts,buthasnobuildingserviceconnections Nobuildingsareservedbythissewer
X XAbandonsewerinplace
6"Sewerwithcleanout
Downstreamofthecleanoutalongthe8"sewerSWofthemanholeatSecondStisa6"sewerthatextendstotheSEtoacleanout.ThislineservesBldgsT65,T66,T98
X CCTVsewer,performconditionassessmentandhydraulicanalysis
8"SewerwithcleanoutFromthemanholeSWofCactusBlvd,an8"seweextendsNWtoacleanoutwithaservicetoBldgT74 X
CCTVsewer,performconditionassessmentandhydraulicanalysis
6"Sewerwithcleanouts
FromthemanholeSWofCactusBlvd,a6"sewerextendsSEtoFirstStwith3cleanoutsandservicestoBldgsT63,T64,T83
X CCTVsewer,performconditionassessmentandhydraulicanalysis
6"Sewerwithcleanouts
FromthemanholeSWofCactusBlvd,a6"sewerextendsSWtoacleanout,thenSEtoasecondcleanoutwithservicestoBldgT63
X CCTVsewer,performconditionassessmentandhydraulicanalysis
FirstStfromCenturyBlvdtoChollaBlvd 8"Sewerwithcleanoutandmanholes
FromthemanholeatCenturyBlvd&FirstStthesewerextendstoamanholesatDarrBlvdandChollaBlvd
X CCTVsewer,performconditionassessmentandhydraulicanalysis
6"Sewerwithcleanout
BetweenthemanholesatCenturyBlvdandDarrBlvda6"sewerextendstotheSEandterminatesatacleanoutwithoutservinganybuildings Nobuildingsareservedbythissewer
X X
Abandonsewerinplace
8"Sewerwithcleanouts
BetweenthemanholesatCenturyBlvdandDarrBlvdan8"sewerextendsfromacleanouttotheSEandterminatesatacleanoutpossiblyservingonebuilding
X CCTVsewer,performconditionassessmentandhydraulicanalysis
8"SewerwithcleanoutFromthemanholeatChollaBlvdasewerextendsSEtoacleanoutwithoutservinganybuildings Nobuildingsareservedbythissewer X X Abandonsewerinplace
DarrBlvdfromFirstSttoChollaBlvd 8"Sewerwithcleanoutsandmanhole
FromthemanholeatDarrBlvdandFirstStasewerextendsSEwith3cleanoutstoamanholeSEofthePumpHousesite.
X CCTVsewer,performconditionassessmentandhydraulicanalysis
8"SewerwithcleanoutFromthemanholeSEofthePumpHouse,thesewerextendstotheeastandtermininatesatacleanout X Confirmnoservicesinusethenabandonsewerinplace
8"Sewerwithcleanout
NWofthemanholeSEofthePumpHouse,an8"sewerextendsNEfromacleanoutandterminatesatanothercleanout
XConfirmnoservicesinusethenabandonsewerinplace
8"Sewerwithmanholes
Approximatelymidwaybetweenthetwomanholes,an8"sewerextendsfromawyeconnectiontoamanholeatthePumpHousesite
XCCTVsewer,performconditionassessmentandhydraulicanalysis
6"SewerFromthemanholeatthePumpHousesite,a6"sewerextendstotheSEastoservethePumpHousesite X
CCTVsewer,performconditionassessmentandhydraulicanalysis
NinthStfromCenturyBlvdtoOcotilloBlvd 12"Sewerwithmanholes
FromthemanholeatNinthStandCenturyBlvd,thesewerextendsNEwith4manholes X
CCTVsewer,performconditionassessmentandhydraulicanalysis
8"SewerwithcleanoutsFromamanholeatDarrBlvd,asewerextendsSEwithtwocleanoutsandaservicetoBldgT55 X
CCTVsewer,performconditionassessmentandhydraulicanalysis
DibbleEngineering Page2of3 2/13/2013
LifeSafety/PublicHealth
Redundancy/Reliability
Maintenance/CapacityforExpansion
NotinUse
SanitarySewerInfrastructureInventory&Assessment
LOCATION COMPONENT DESCRIPTION RISKIFNOACTIONISTAKEN
VULNERABILITY
RECOMMENDATION
6"Sewerwithcleanouts
FromamanholeNWofChollaBlvdandNinthSt,asewerextendsSEwithtwocleanoutsandservicestoBldgsT51,T52,T54
X CCTVsewer,performconditionassessmentandhydraulicanalysis
NinthStfromOcotilloBlvdtoNE 10"Sewerwithcleanoutandmanhole
FromthemanholeatOcotillo,thesewerextendsNEpastSaguaroBlvdtoamanhole Nobuildingsareservedbythissewer X X Abandonsewerinplace
8"Sewerwithcleanoutsandmanholes
FromthemanholeonNinthSt,NEofSaguaroBlvd,thesewerextendsSEandEwith4manholesand8cleanoutswithnoserviceconnections Nobuildingsareservedbythissewer
X XAbandonsewerinplace
OcotilloBlvdfromNinthSttoSecondSt 10"Sewerwithmanholes
ThesewerextendsfromthemanholeatNinthSttotheSEwith7manholes X
CCTVsewer,performconditionassessmentandhydraulicanalysis
6"Sewerwithcleanout
FromthemanholeNWofthehorseshoeofbuildings,thesewerextendsSWtoacleanoutandservesBldgsT41T50
X CCTVsewer,performconditionassessmentandhydraulicanalysis
6"&8"Sewerwithmanholeandcleanouts
FromthemanholeNWofthehorseshoeofbuildings,thesewerextendsNEtoamanhole.FromtheNEmanholea6"sewerextendsSEtoacleanoutandservesBldgT89.FromtheNEmanholean8"sewerextendsNEtoacleanoutandthenextendsSEasa6"sewertoacleanoutwithnoserviceconnections
X
CCTVsewer,performconditionassessmentandhydraulicanalysis
6"Sewerwithcleanout
FromamanholewithinthehorseshoeatSixthSt,asewerextendsNEtoacleanoutandprovidesservicetoBldgsT33,T34,T35,T36,T53
XCCTVsewer,performconditionassessmentandhydraulicanalysis
6"SewerwithcleanoutsFromtheSEcornerofBldgT33,asewerextendsSWwith3cleanoutsandservicestoBldgsT21T32 X
CCTVsewer,performconditionassessmentandhydraulicanalysis
6"SewerwithcleanoutFromamanholeSEofthehorseshoe,asewerextendsSWtoacleanoutwithnoserviceconnections Nobuildingsareservedbythissewer X X Abandonsewerinplace
6"&8"Sewerwithmanholesandcleanouts
FromamanholeatThirdPl,an8"sewerextendsNEandSEwithmanholesandcleanoutswithnoactiveserviceconnections Nobuildingsareservedbythissewer
X XAbandonsewerinplace
6"withcleanoutFromSEofamanholeatSecondPl,asewerextendsNEtoacleanoutwithnoserviceconnections Nobuildingsareservedbythissewer X X Abandonsewerinplace
6"withcleanoutFromamanholeatSecondSt,asewerextendsNEtoacleanoutwithnoserviceconnections Nobuildingsareservedbythissewer X X Abandonsewerinplace
DibbleEngineering Page3of3 2/13/2013
DibbleEngineeringFebruary2013
PinalAirparkWater&SewerUtilityAssessment
APPENDIXDEngineersOpinionofProbableCapitalCost
ENGINEER'SOPINIONOFPROBABLECONSTRUCTIONCOST
ProjectName: PinalAirparkWater&SewerUtilityAssessment Date: 2/13/2013ProjectNumber: 101234.01 DibbleProjectNo.: 101207.02
Recommendation: 1WaterMasterPlan PreparedBy: K.Faucett
ItemNo. ItemDescription Unit Qty UnitPrice ExtendedTotal1 HydrantFlowTesting LS 1 4,000.00$ 4,000.00$2 LeakageTesting LS 1 20,000.00$ 20,000.00$3 Survey&MappingofInfrastructure LS 1 30,000.00$ 30,000.00$4 ExistingHydraulicModel LS 1 20,000.00$ 20,000.00$5 FutureHydraulicModel LS 1 40,000.00$ 40,000.00$6 Report/MasterPlan LS 1 20,000.00$ 20,000.00$
$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $
Subtotal 134,000.00$Contingency 50% 67,000.00$
TOTAL 201,000.00$
Page1of1
ENGINEER'SOPINIONOFPROBABLECONSTRUCTIONCOST
ProjectName: PinalAirparkWater&SewerUtilityAssessment Date: 2/13/2013ProjectNumber: 101234.01 DibbleProjectNo.: 101207.02
Recommendation: 2WellRedundancy PreparedBy: K.Faucett
ItemNo. ItemDescription Unit Qty UnitPrice ExtendedTotal1 WellDrilling&Casing LF 1500 100.00$ 150,000.00$2 WellPump&Motor EA 1 50,000.00$ 50,000.00$
$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $
Subtotal 200,000.00$Contingency 50% 100,000.00$
TOTAL 300,000.00$
Page1of1
ENGINEER'SOPINIONOFPROBABLECONSTRUCTIONCOST
ProjectName: PinalAirparkWater&SewerUtilityAssessment Date: 2/13/2013ProjectNumber: 101234.01 DibbleProjectNo.: 101207.02
Recommendation: 3BoosterPumpFacility PreparedBy: K.Faucett
ItemNo. ItemDescription Unit Qty UnitPrice ExtendedTotal1 DemolitionofExistingFacility LS 1 28,000.00$ 28,000.00$2 YardPiping LF 200 150.00$ 30,000.00$3 BoosterPumps&Motors EA 3 120,000.00$ 360,000.00$4 HydropneumaticTank&Compressor EA 1 100,000.00$ 100,000.00$5 Isolation&CheckValves12" EA 6 7,000.00$ 42,000.00$6 PumpHouseStructure EA 1 100,000.00$ 100,000.00$7 DisinfectionSystem EA 1 6,500.00$ 6,500.00$
$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $
Subtotal 666,500.00$Contingency 50% 333,250.00$
TOTAL 999,750.00$
Page1of1
ENGINEER'SOPINIONOFPROBABLECONSTRUCTIONCOST
ProjectName: PinalAirparkWater&SewerUtilityAssessment Date: 2/13/2013ProjectNumber: 101234.01 DibbleProjectNo.: 101207.02
Recommendation: 4HydrantReplacementProgram PreparedBy: K.Faucett
ItemNo. ItemDescription Unit Qty UnitPrice ExtendedTotal1 FireHydrantAssembly EA 40 4,000.00$ 160,000.00$2 6"RestrainedJointDuctileIronPipe LF 600 60.00$ 36,000.00$
$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $
Subtotal 196,000.00$Contingency 50% 98,000.00$
TOTAL 294,000.00$
Page1of1
ENGINEER'SOPINIONOFPROBABLECONSTRUCTIONCOST
ProjectName: PinalAirparkWater&SewerUtilityAssessment Date: 2/13/2013ProjectNumber: 101234.01 DibbleProjectNo.: 101207.02
Recommendation: 5Valve&WaterlineReplacementProgram PreparedBy: K.Faucett
ItemNo. ItemDescription Unit Qty UnitPrice ExtendedTotal1 6"DuctileIronPipe LF 4450 60.00$ 267,000.00$2 8"DuctileIronPipe LF 11550 80.00$ 924,000.00$3 10"DuctileIronPipe LF 2650 90.00$ 238,500.00$4 12"DuctileIronPipe LF 3950 100.00$ 395,000.00$5 6"GateValve EA 12 2,000.00$ 24,000.00$6 8"GateValve EA 19 2,400.00$ 45,600.00$7 10"GateValve EA 3 2,800.00$ 8,400.00$8 12"GateValve EA 3 3,600.00$ 10,800.00$
$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $
Subtotal 1,913,300.00$Contingency 50% 956,650.00$
TOTAL 2,869,950.00$
Page1of1
ENGINEER'SOPINIONOFPROBABLECONSTRUCTIONCOST
ProjectName: PinalAirparkWater&SewerUtilityAssessment Date: 2/13/2013ProjectNumber: 101234.01 DibbleProjectNo.: 101207.02
Recommendation: 7TankConditionAssessment PreparedBy: K.Faucett
ItemNo. ItemDescription Unit Qty UnitPrice ExtendedTotal1 TankInspection&Assessment EA 1 20,000.00$ 20,000.00$2 O&MProgramforTank EA 1 30,000.00$ 30,000.00$
$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $
Subtotal 50,000.00$Contingency 20% 10,000.00$
TOTAL 60,000.00$
Page1of1
ENGINEER'SOPINIONOFPROBABLECONSTRUCTIONCOST
ProjectName: PinalAirparkWater&SewerUtilityAssessment Date: 2/13/2013ProjectNumber: 101234.01 DibbleProjectNo.: 101207.02
Recommendation: 8ValveExercise&HydrantFlushingProgram PreparedBy: K.Faucett
ItemNo. ItemDescription Unit Qty UnitPrice ExtendedTotal1 FlushHydrant EA 40 100.00$ 4,000.00$2 ExerciseValve EA 100 50.00$ 5,000.00$
$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $
Subtotal 9,000.00$Contingency 10% 900.00$
TOTAL 9,900.00$
Page1of1
ENGINEER'SOPINIONOFPROBABLECONSTRUCTIONCOST
ProjectName: PinalAirparkWater&SewerUtilityAssessment Date: 2/13/2013ProjectNumber: 101234.01 DibbleProjectNo.: 101207.02
Recommendation: 9SewerConditionAssessment PreparedBy: K.Faucett
ItemNo. ItemDescription Unit Qty UnitPrice ExtendedTotal1 Survey&AsssementofSewerPipe LF 38,000 1.00$ 38,000.00$2 Survey&AssessmentofSewerManholes EA 40 1,100.00$ 44,000.00$3 Survey&AssessmentofSewerCleanouts LS 75 400.00$ 30,000.00$4 ExistingHydraulicAnalysis LS 1 20,000.00$ 20,000.00$
$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $
Subtotal 132,000.00$Contingency 50% 66,000.00$
TOTAL 198,000.00$
Page1of1
ENGINEER'SOPINIONOFPROBABLECONSTRUCTIONCOST
ProjectName: PinalAirparkWater&SewerUtilityAssessment Date: 2/13/2013ProjectNumber: 101234.01 DibbleProjectNo.: 101207.02
Recommendation: 10SewerMasterPlan PreparedBy: K.Faucett
ItemNo. ItemDescription Unit Qty UnitPrice ExtendedTotal1 FutureHydraulicModel LS 1 38,000.00$ 38,000.00$2 Report/MasterPlan LS 1 30,000.00$ 30,000.00$
$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $
Subtotal 68,000.00$Contingency 50% 34,000.00$
TOTAL 102,000.00$
Page1of1
CoverTable of ContentsI. Airport DescriptionFigure 1: Airport Overview DrawingII. Project Goals and DescriptionIII. Water & Sewer Infrastructure IndexA. Water Distribution Network Table 1: Water System InventoryB. Sewer System NetworkTable 2: Sewer System InventoryIV. Vulnerability AssessmentA. Life Safety & Public Health ConcernsB. System Redundancy & ReliabilityC. Maintenance / Rehabilitation / ReplacementD. Capacity for ExpansionV. RecommendationsTable 3: RecommendationsAppendix A: Utility Mapping, As-Builts, Other Utility DataAppendix B: Inventory of Water Infrastructure & Vulnerability AssessmentAppendix C: Inventory of Sewer Infrastructure & Vulnerability AssessmentAppendix D: Engineer's Opinions of Probable Capital Cost