ACAT FOIA Repository 12

Proposed Plan for Remedial ActionGambell Formerly Used Defense SiteSt. Lawrence Island, AlaskaAgendan Welcome/Introductions7:00 pm7:10 pmn Questions7:40 pmBREAK8:00 – 8:15 pmn Safety Around Ammunition 8:15 pmn Questions8:30 pmn Open Discussion9:00 pmn Adjournment10:00 pmn Proposed Plan OverviewJuly 21, 2004Public MeetingGambell, AK2Proposed PlanPublic Process under CERCLAn Summarizes all sites evaluated duringn Conduct a Public Meeting to present anthe investigation process, includingsites proposed for No Further Actionn Describes environmental conditionsn Describes cleanup alternativesconsideredn Presents recommended cleanupalternativesn Requests public comment3Evaluation Criterian Overall protection of human health and theenvironmentn Compliance with regulationsn Short term effectivenessn Long term effectiveness and permanencen Reduction of toxicity, mobility, and volumen Implementabilityn Costn Community acceptancen State acceptance5overview of the Proposed Plan and receiveoral or written commentsn Hold a 30-day Public Comment Periodn Consider and respond to comments inResponsiveness Summaryn Prepare Decision Document whichdescribes the final selected remedyn Publish Public Notice for the Decision4DocumentCleanup Levelsn Soil and groundwater cleanup levels arerisk-based and designed to be protectiveof human health and the environmentn All Sitesn ADEC Table B Soil Cleanup Levels, Under 40Inch Zone, Ingestion pathwayn Sites 5 and 12n ADEC Table B Soil Cleanup Levels, Under 40Inch Zone, Migration to Groundwater Pathway6n ADEC Table C Groundwater Cleanup LevelsF10AK069603_08.10_0017_a200-1e1Preferred AlternativesPreferred Alternatives (con’t)n Recommendations:n Recommendations:n Remove arsenic-contaminated gravelfrom under former concrete pad (Site 7)n Remove exposed metal debris from theAirfield (Site 8A)n Remove small arms ammunition fromthe Beach Burial Site (Site 8D)n Remove lead-contaminated soil fromsouth of Troutman Lake (Site 12)n Collect an additional groundwater samplefrom the Village Water Supply andsurrounding Monitoring Wells (Site 5)n No Further Action at remaining Sites74B4E4A5BERING SEA11910WestBeachBering SeaFormerCommunicationsFacilityArmy Landfills4B17Former Military36Burial SiteMilitary2Drum Storage LandfillArea27 FormerVillageFormer7 Power4EWater4A Quonset HutsFacilityCableSupply2625A25BDebrisS. Housing 16Low20Drainage8B24Area518FormerBuried21Debris19Buried TramwayFormer15Diatomaceous DebrisMain4D FormerEarthCampTransformersHighSchoolCityHall Washeteria1120ni9 AsphaltDrumsN12±to14Troutman LaketiocaA irstr ip138AMarstonMattingmu8DN1000010002000 Feet9500³Site 7 – Military Power FacilityPreferred AlternativeFormerAir ForceRadar Site1BCAAHousing4C28Air ForceLanding Area1A224DOld VillageAreaTroutman Lake8AArmy Landing Area23 Debris fromHigh School8C Navy Landfill050010Air Force Tr ail23Army Trail1B2772625B 25A 16 202624188B19 2115Airs tripNorth Beach1CSevuokuk Mountain1A176ns Cable Route1C22Com238C8101000 FeetSB27-1SB27-2³SB27-3³HouseQ. BuildingMetal FreightContainers (former)Site 7#n Concrete pad removed in 2003SS41#SS40n Underlying gravels contained elevated levels ofarsenic attributed to wood preservative fromthe buried support timbersn Maximum arsenic concentration is 34.9 mg/kgn ADEC cleanup level is 5.5 mg/kgMW 26#³ SB7-18ðSB17³Concrete Slab(removed 2003)MW2407SL001 # ð07SL002 # # # 07SL00407SL003MW 25³ð SB7-20##07SL005#n Excavate arsenic-contaminated gravelSB7-19³FuelPipelineMW27ðn Transport off-site to permitted landfill111221314151617183Site 8A - Airport RunwayMarsten Mattingn Remove exposed metallic debrisfrom east side of runwayn Transport and dispose off-site at apermitted landfill or recycling facility1920212223244Site 8D - Beach Ammunition DumpPreferred Alternativen Excavate pits and separate smallarms rounds from the graveln Transport and dispose off-site at apermitted landfill2526Site 12 - North Nayvaghat LakesDisposal Site Preferred Alternativen Excavate lead-contaminated soiln Transport off-site to permittedhazardous waste landfill (lower 48)n Surface soils contain Leadn Maximum concentration 1,530 mg/kgn Applicable ADEC cleanup level is 400mg/kg27282930Troutman LakeUnnamed PondSite 12North AreaSite 8DSite 12South AreaNNorth NayvaghatLakes50005001000 Feet531Site 5 – Former TramwayPreferred Alternative321994 GW contours4.75Aquifer boundary3.4¬ Oct 1998 GW contoursNMW14ð3.54.8MW 30n Collect one additional groundwaterðsample from the Village Water SupplyWell and the surrounding MonitoringWellsn No Further Action3.74.853.64.0ArchaelogicalSite4.1ATVMW 314.95MW 28Trai l3.83.9ð 4.9ðAT VTrailMW 15ðNewVillageWell#SB34³SB36³#ðToe ofSevuokukMountain32ð MWðMW16³ SB33#MW 2950050 FeetSpring333435366Remaining Sites –Preferred AlternativeOther Sites Evaluatedn No contamination above ADEC Table Bn No Further ActionMigration to Groundwater cleanup levels and/orn Levels of Contaminants below ADECn Surface debris removed (1997, 1999)cleanup criterian Surface debris removed under previousremoval actionn Remaining buried debris ineligible forremoval using the FUDS programn NALEMP activity planned for 2004 and2005 to continue buried debris removalnSite 1A and 1B North BeachnSite 17 Army LandfillsnSite 4C and 4D Sevuokuk MtnnSite 18 Main CampnSite 8B and 8C West BeachnSite 20 SchoolyardnSite 9 Asphalt Barrel CachenSite 24 S. of Municipal BldgnSite 10 Sevuokuk Mtn TrailnSite 25A South Housing UnitsnSite 11 Communications CablenSite 25B Low Drainage AreanSite 13 Radar Power StationnSite 14 Navy Plane Crash Site37Other Sites EvaluatednSite 16 Municipal Building SiteSouthwest of ArmorynSite 26 Possible Debris BurialnSite 27 Drum Storage Area38nSite 28 Disturbed GroundOther Sites Evaluatedn No contamination above ADEC Table Bn Remaining debris not eligible for cleanupIngestion cleanup levelsn Surface debris and/or contaminated soilsremoved in 1997, 1999under the FUDS program, planned forNALEMP cleanup activitiesn Site 1C North Beach (underwater debris)n Site 15 Troutman Lake (underwater debris)n Site 2 Former Military Housingn Site 19 Diatomaceous Earthn Site 4A Former Quonset Hutsn Site 21 Toe of Sevuokuk Mountainn Site 4B Former USAF Radar Stationn Site 22 Former CAA Housingn Site 6 Military Landfilln Site 23 Debris moved from High School39TIMELINEconstruction40QUESTIONS?AUGUST 23, 2004:Public Comments DueSEPTEMBER 2004:Responsiveness SummaryOCTOBER 2004:Decision DocumentFALL/WINTER 2004:Design Remedial ActionEARLY 2005:Advertise/Select ContractorSUMMER 2005:FieldworkWINTER 2005:Draft Report41427Safety Around Military Ammunitionn Types of ammunition:n Small arms, mostly 0.30-caliber roundsn Old military items such as hand grenades mayalso be presentn Description:n Military munitions have a full metal jacket/sheathn Typically inert but 0.30-caliber rounds maycontain tracer elements.n Ammunition that has been doused in gasoline ordiesel fuel and burned, buried in high-moisturecontent gravels, or immersed in water forextended periods is unlikely to be functional 43Safety Around Military AmmunitionSafety Around Military AmmunitionNEVER TRY TOSHOOTDISCARDEDAMMUNITIONWITH A RIFLEYou could seriously injureyourself or damage yourrifle!44Safety Around Military AmmunitionNEVER TOSSAMMUNITIONINTOA FIRENEVER PLACESMALL ARMSROUNDS IN ANOVENOld rounds aren’tfirecrackers - they couldexplode and cause injury toyourself or others!Trying to dry out oldammunition is not worththe risk of explosion orstarting a fire!4546Safety Around Military AmmunitionEmergency Contact InformationIf items other than small arms ammunition arediscovered, you should immediately contact yourVillage Public Safety Officer (VPSO)City of GambellPolice Department & VPSO985-5333Do not pick up or move the item!Write down the location of thepotentially dangerous item.§ Mark the site and provide areference using known landmarksso it can be found again.§ Photograph the item, if possible§§Military Hand Grenades47Nome Alaska State Trooper Post(907) 443-2835U.S. Army 716th Ordnance CompanyFort Richardson, Alaska(907) 384-7600 or24hr Emergency Line (907) 384-7603488p"'~l;'r~ +- ~ j o~~ ~ ~ lo\""'\ ,'l\.,f1rl'1 I+Lf;) ,I.- tJP J11)(_Po;,t'-'1)r"'-"V\i~ ~lt."' tJ r:s-- ~~ rz (\f\ l ~2[r:..t_Scr1l.. "L i l j'~i.AA