ANTIETAM CREEK WATERSHED RESTORATION ?· i ANTIETAM CREEK WATERSHED RESTORATION PLAN September 17, 2012…

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<ul><li><p>i </p><p>ANTIETAMCREEKWATERSHEDRESTORATIONPLAN</p><p>September17,2012</p><p>Creationofthiswatershedplanwasacooperativeeffortby:</p><p>TheWashingtonCountySoilConservationDistrictTheBoardofCountyCommissionersofWashingtonCounty</p><p>TheAntietamCreekWatershedAllianceTheCanaanValleyInstitute</p><p>andMarylandDepartmentoftheEnvironment</p><p>ScienceServicesAdministrationTMDLImplementationDivision</p><p>Photoby:JenGoellnetzhttp://www.flickr.com/photos/goellnitz/4609441907</p></li><li><p>i </p><p>TableofContents</p><p>1.INTRODUCTION.............................................................................................................................. 1</p><p>2.WATERSHEDCHARACTERIZATION................................................................................................. 52.1LandUse.............................................................................................................................................72.2Geology ..............................................................................................................................................92.3HistoricalandRecreationalSignificance ..........................................................................................15</p><p>3.WATERQUALITY........................................................................................................................... 173.1WaterQualityStandards..................................................................................................................173.2TMDLSummaries .............................................................................................................................18</p><p>3.2.1Sediment................................................................................................................................203.2.2Bacteria ..................................................................................................................................233.2.3ChesapeakeBayTMDL...........................................................................................................24</p><p>3.3WaterQualityObjectivesandGoals ................................................................................................25</p><p>4.NONPOINTSOURCEINVENTORY(CRITERIONA)........................................................................ 274.1Sediment ..........................................................................................................................................274.2Bacteria ............................................................................................................................................34</p><p>5.NONPOINTSOURCEMANAGEMENT(CRITERIONB) .................................................................. 405.1Sediment ..........................................................................................................................................405.2Bacteria ............................................................................................................................................435.3PotentialTreatmentTechnologies(CriterionC) ..............................................................................46</p><p>6.TECHNICALANDFINANCIALASSISTANCE/BENEFITS(CRITERIOND)........................................... 496.1TechnicalAssistanceNeedsandPartners ........................................................................................496.2FinancialAssistanceNeeds ..............................................................................................................49</p><p>7.INFORMATION,EDUCATIONANDPUBLICPARTICIPATION(CRITERIAE) .................................... 55</p><p>8.IMPLEMENTATIONSCHEDULEANDMILESTONES(CRITERIAF/G) .............................................. 598.1PhaseI(20122017) .........................................................................................................................598.2PhaseII(20182025) ........................................................................................................................61</p><p>9.LOADREDUCTIONEVALUATION(CRITERIONH).......................................................................... 629.1StreamSegmentCriterionforBiology .............................................................................................63</p><p>10.MONITORING(CRITERIONI) ...................................................................................................... 6410.1PhaseIMonitoringPlan .................................................................................................................6410.2PhaseIIMonitoringPlan ................................................................................................................66</p><p>REFERENCES: .................................................................................................................................... 68</p></li><li><p>ii </p><p>LISTOFFIGURES:Figure1AntietamCreekWatershedlocation.................................................................................................................4Figure2AntietamCreekSubwatersheds.......................................................................................................................6Figure3LandUseMapofAntietam ................................................................................................................................8Figure4DistributionofAntietamCreekGeologicFormations .....................................................................................10Figure5DistributionofAntietamCreekHydrologicsoils .............................................................................................13Figure6DistributionofAntietamCreeksoils ...............................................................................................................14Figure7SedimentTMDLSegmentation ........................................................................................................................19Figure8MBSSandBacteriaSamplingstations..............................................................................................................22Figure9AntietamCreekWatershedStreamDesignations............................................................................................26Figure10LittleAntietamCreekSite#1........................................................................................................................28Figure11MainStemAntietamCreek,Site#2 .............................................................................................................29Figure12SmithsburgWastewaterTreatmentPlantsite,(UrbanStreamRestoration) ...............................................30Figure13LittleAntietamCreekatGreensburgRoad(Lettere,inFigure17) ..............................................................32Figure14MapofPrioritySitesIdentifiedforStreamRestoration*.............................................................................33Figure15LocationofSepticSystems............................................................................................................................36Figure16Locationofreplacedsepticsystems .............................................................................................................37Figure17LocationofDairyOperations ........................................................................................................................39Figure18MapofprioritysubwatershedsforbacteriaBMPimplementation .............................................................45Figure19SynopticSurveySites....................................................................................................................................67LISTOFTABLES:Table1MaximumPracticableReductionScenario(2009BacteriaTMDL) ....................................................................3Table2PollutantsidentifiedinTMDL ............................................................................................................................7Table3ApplicableWaterQualityStandardsforBacteria.............................................................................................17Table4CurrentestimatedBaselineLoadsandTMDLsforsedimentforeachloadsourcecategoryintheMarylandportionofAntietamCreekWatershed.(MDE2008)......................................................................................................20Table5TMDLIBIandSSDIScores(MDE2008).............................................................................................................21Table6CurrentestimatedBaselineLoadsandTMDLsforfecalcoliformin9subwatershedsintheMarylandPortionofAntietamCreek.(BacteriaTMDL2009) ......................................................................................................................23Table7AnnualAverageTMDLLoadingCaps ................................................................................................................24Table8EstimationofMDnonpointsourcesedimentcontributionsfromTMDL.......................................................27Table9Estimatedstreamerosioncontributionsfrom15sitesonAntietamCreek. ...................................................31Table10TMDLBaselineloadsandreductionsforallsectors.......................................................................................34Table11AntietamCreekLivestockCensus..................................................................................................................38Table12SedimentReductionsfromNonPointSourcesduringperiodofTMDLdevelopmentto2012 .....................40Table13NonPointSourceStrategyfor2017..............................................................................................................41Table14NonPointSourceStrategytomeetTMDLin2025........................................................................................41Table15UrbanStrategytomeetTMDLin2025 .........................................................................................................42Table16EvaluationofreductionstomeetTMDL.........................................................................................................42Table17BacteriaBMPsReductionEfficiencies............................................................................................................43Table18BMPScheduleforBacterialMitigation..........................................................................................................44Table19FailingSepticsStrategytomeetTMDLin2025 .............................................................................................44Table20AgricultureBestManagementPracticesandCosts ........................................................................................50Table21:UrbanBMPsthatcanbeimplementedtoachievetheurbansedimentreductions. ......................................51Table22FundingSources(Existing/Potential)...............................................................................................................53Table23StakeholderOutreachStrategyfortheAntietamCreekWatershedPlan......................................................55Table24StakeholdersIdentifiedintheAntietamCreekWatershed,February2012 ...................................................56LISTOFAPPENDICIES:</p><p>AppendixAMD2008AntietamCreekSedimentTMDL...............................................................................................69AppendixBMD2009AntietamCreekFecalBacteriaTMDL70AppendixCSedimentCalculationWorksheetExample..71AppendixDBankErosionHazardIndex/NearBankStressMethodology..72AppendixEMinnesotaPollutionControlAgencyPaper.81</p></li><li><p>iii </p><p>LISTOFABBREVIATIONS:ACWA AntietamCreekWatershedAllianceAg AgricultureBEHI BankErodibilityHazardIndexBIBI BenthicIndexofBioticIntegrityBMP BestManagementPracticeBRF BayRestorationFund,StateofMarylandChesapeakeBayBST BacteriaSourceTrackingCBOD CarbonaceousBiologicalOxygenDemandCOMAR CodeofMarylandRegulationsCVI CanaanValleyInstituteCWA CleanWaterActDNRF MDDepartmentofNaturalResourcesInlandFisheriesDOC DissolvedOrganicCarbonDPW WashingtonCountyDivisionofPublicWorksEOF EdgeofFieldEOS EdgeofStreamFIBI FishIndexofBioticIntegrityGIS GeographicInformationSystemgpm gallonsperminuteLA LoadAllocationsMACS MarylandAgriculturalWaterQualityCostShareProgramMAST MarylandAssessmentScenarioToolMBSS MarylandBiologicalStreamSurveyMDA MarylandDepartmentofAgricultureMDE MarylandDepartmentoftheEnvironmentmg/L milligramsperliterMPN MostProbablyNumberMS4 MunicipalSeparateStormSewerSystemNBOD NitrogenousBiologicalOxygenDemandNPDES NationalPollutantDischargeEliminationSystemNPS NonPointSourceNRCS NaturalResourcesConservationServiceTMDLs TotalMaximumDailyLoadsTN TotalNitrogenTP TotalPhosphorustpy tonsperyearTSS TotalSuspendedSolidsUSEPA UnitedStatesEnvironmentalProtectionAgencyVADCR VirginiaDepartmentofConservationandRecreationVADEQ VirginiaDepartmentofEnvironmentalQualityWCSCD WashingtonCountySoilConservationDistrictWLA WasteLoadAllocationsWIP ChesapeakeBayWatershedImplementationPlanWRP WatershedRestorationPlan</p></li><li><p>iv </p><p>ACKNOWLEDGEMENTSTheAntietamCreekWatershedRestorationPlanwasdevelopedwithcooperationandinputfromstate,localandprivateagenciesthatrepresenttheinterestsoftheAntietamCreekWatershed.Organization RepresentativesTheWashingtonCountySoil ElmerWeibley,CPESC,DistrictManager, ConservationDistrict MikeStoner,ConservationTechnician WashingtonCounty,MD JosephKrobothIII,P.E.,P.L.S.,Director,DivisionofPublicWorksBoardofCountyCommissioners JuliePippel,Director,DivisionofEnvironmentalManagement AlexanderReed,WatershedEngineerCityofHagerstown RodneyTissue,P.E,CityEngineer AntietamCreekWatershedAlliance DaveBiserCanaanValleyInstitute KristenMielcarekMarylandDepartmentoftheEnvironment KenShanks,GregorioSandiWaterQualityProtectionandRestoration ProgramMarylandDepartmentoftheEnvironment QuentinForrestFieldEvaluationDivision ThisprojectwasfundedinpartbytheUSEnvironmentalProtectionAgency(EPA),RegionIIIWaterQualityAssistanceGrantCP973423.AlthoughthisprojectisfundedinpartbytheEPA,itdoesnotnecessarilyreflecttheopinionorpositionoftheEPA.</p></li><li><p>1 </p><p>1.IntroductionIn1996,theAntietamCreek(MDSegment02140502)wasplacedonMarylands303(d)listforsediment,then fecalcoliform(2002),andimpactstobiologicalcommunities(2002).ATotalMaximumDailyLoad(TMDL)forsediment</p><p>wasdevelopedandapprovedfortheAntietamwatershedin2008withasubsequentTMDLforBacteriadevelopedin</p><p>2009.</p><p>TheheadwatersoftheAntietamCreekoriginateinPennsylvaniasMichauxStateForest.TheEastBranchdescends</p><p>fromSouthMountainnearWaynesboroflowingoverafivefootweirattheWaynesboroCountryClub.TheWest</p><p>BranchoriginatesnearMontAlto.ThebranchesjoinjustnorthoftheMasonDixonLinetoformthemainstemofthe</p><p>Antietam.Approximately5%ofthetotalwatershediscoveredbywater(i.e.streams,ponds,lakes,etc.)anddrains</p><p>intothePotomacRiverinMaryland.(Figure1)</p><p>PurposeThisplanwillincorporatephasedmitigationstrategiestoeliminatesedimentandbacterialimpairmentsassociated</p><p>withnonpointsourcesandtomonitortheeffectsofmitigationeffortsonbiologicalcommunities.Thisdocument</p><p>providesacomprehensiveWatershedRestorationPlan(WRP)forAntietamCreekwithrespecttoNonPointSources</p><p>(NPS)ofsedimentandfecalcoliform.Thewatershedreceivesloadsfrombot...</p></li></ul>

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