Final Strategic Project Implementation PlanGambell, St . Lawrence Island, AlaskaContract No. DACA85 -98-D-0007Delivery Order No. 18, Task 1December 2000Prepared for :Native Village of GambellP.O. Box 90Gambell, Alaska 99742Prepared by :Montgomery Watson4100 Spenard RoadAnchorage, Alaska 99517sTable of ContentsAcronyms .................... ..Introduction ........ ...... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . .1The SPIP .. .. ....................................... . ... ...................................... .................................... ....... . 1Approach ........................ . . . . . . . . . . . ..... . ..... . . . . . . . . . . . ................... .................... . ..... . ......... . . . . . . . .. . . . . . . .1Location ................ . .. .. .. .. . . .. . . . . . . . .. . . . . . . . . . .. .. . . . . . . . . . . .. .. . . .. .. .. ................. . ... . .. .. . . .. . . .. . . .. .. . . .. . . . . . . .. . . . . . 2Site History .. ... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. .. .. .. . . . .. . . . . . . . . . . . . . . . . . . . . . ..................... 2Site Descriptions ....... ........................................... ......... ..... ... ................ .. ................ .................... ... 4Site 1A, Army Landing Area .... ........................... . ....... .. .. . . . . . . . . .. .. .. .. .. .... .......... .. .. ........ ......... . 4Site 1B, North Beach/Air Force Landing Area ......................... . . ............................... . . . . . ...... . 4Site 1C, North Beach . .. .. .. . . . . . . . . . . .. .. .. .. ... . .. .. .. .. .. . . .. .. .. .. . . ....................... . .. .. .. ... . .. .. .. ... . .. .. . . . . .. .. .. .4Site 2, Former Military Housing/Operations Burial Site .. .. ... . .. .. .. .. .. .. . . . . . . .. . . . . . . . . .. . . . . . . . . . . . . . . . . . 4Site 3A, Former Communications Facility Burial Area . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5Site 4E, Western Face of Sevuokuk Mountain . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5Site 5, Former Tramway Site ..... . . .. .. .... .. .. .. .. .. .... .. .. .... .. .. .. . . . . .. . . . . . . . . . . . . . . . . .. .. .. .. .. . . . . .. .. .. .. .. .. .. .. . . 5Site 6, Military Landfill .................................. .. . ............... .............. ...... ............ ................ ..... . 5Site 7, Former Military Power Facility ....... .. . . .............................. ....................................... .. 6Site 8, Small Arms Ammunition Burial Site . . . . . . . . ............................. .... . . . ... . . . . . ....... . . . . . . . . . . . ... . . 6Site 8A, Eastern Edge Of Runway . . . . . . . . . . . . .. . . . . .. .. .. ..... . .. .... .. .. .. . . .. .. .. . . . . .. .. . . .. .. .. . . . . . . . . .. . . . .6Site 8B, West Beach, Old Gambell Village Site . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . 6Site 8C, Navy Landfill .... .. .. .. .. .. .. .. .. . . .. .. .. .. .. .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. .. .. .. .. . . . . . . . . . . . . . . . . .. .. .. .. .. 6Si te 13, Former Radar Power Station ..................... ...... .. .. .. .. .. .. .... .. .. ............. . . . .. .. ................ .. 7Site 15, Troutman Lake Debris Burial Site ............. . ................................ .................... ......... . 7Site 16, Gambell Municipal Building Site .. . ................. ............. ......... .... ..... ......... ........... . 7Site 17, Air Force Landfill . . . . . . . . . . . .. . . .. .. .. .. . . .. .. . . .. . . .. .. .. .. .. ......... . .. ... . .. .. .. .. .. . . .. .. .. ... . .. . . . . . . . . . . . . .. .. 7Site 18, Former Main Camp . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . .. .. .. ... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7Site 19, Diatomaceous Earth . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8Site 20, Schoolyard . . . . . .. .. ... . .. .... .. .. .. . . . . .. .. .. .. .. .. . ... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. .. .. . . .. . . . . . 8Site 21, Toe of Sevuokuk Mountain .................. .... ........ .. .. .. .. . . . . .. ...... .. . ......... .. .. .. .. .......... .... .. . 8Site 22, Former CAA Housing . . . .. ... . ... . ..................... .............................. ................ . .. .. . . .. .. ... . 8Site 23, Debris from High School Construction .. . . .. .. .. .. .. .. ......... . ... . .. . . . . . . . . .. .. . . ..... . . . . . . . . .. . .. .. .. 8Site 24, South of Municipal Building . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9Site 25, Village of Gambell, South Housing Units . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9Costs.............. ...... .............................. ... ............................ .............................. ......................... ..... .10References .... ............................ ............................... ................................ . . .......................... ........ .15Gambell Strategic Project Implementation Plan - FinalPagei1189098.180101/6 .2.2December2000List of Figures1Gambell Vicinity Map ....... . .. .. .. .. .. .. . . . . . . . . . . . . . . . . . . . .. . . . . . .. .. ... . ........... . ......... . .. ... . .. .. .. .. .. .. .. .. .. . . . .. . .. . 32 Gambell Site Map . .. .. .. .. .. . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . .. .. .. .. .. .. .. .. .. .. . . .. .. . .. . . . .. . . . . . . . . . . . . . . . . . . . . . . .113 Historical Photographic Documentation . . . . . . . . . . . . . . . . . . . . . . . . .. .. . . .. . . .. . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12List of TablesCleanup of Former Department of Defense Facilities ...... .. .. .. .......... .. .............. .. ................. .13AppendicesAppendix A Community SurveysSurvey Summary TablePriority ListSummary . Location MapsExample of Survey QuestionnaireAppendix B Geophysical Report - July 2000Appendix C Asbestos Survey Field NotesAppendix D Future Construction InformationAppendix E Removal Cost EstimationsGambell Strategic Project Implementation Plan - Final Page ii1189098.18010116.2 .2December2000AcronymsACMAir ForceArmyATVBLMCAADERPDoDFUDSIRANALEMPNavyRISPIPUSAEDasbestos-containing material(s)United States Air ForceUnited States Armyall-terrain vehicleBureau of Land ManagementCivil Aeronautics AdministrationDefense Environmental Restoration ProgramDepartment of Defenseformerly used defense sites'Native Village of Gambell, Indian Restoration ActNative American Lands Environmental Mitigation ProgramUnited States Navyremedial investigationStrategic Project Implementation PlanUnited States Army Engineer Division, HuntsvilleGambell Strategic Project Implementation Plan - Final Page iii1189098.180101/6.2 .2December2000INTRODUCTIONThe Native Village of Gambell (IRA) entered into an cooperative agreement with theDepartment of Defense (DoD) under the Native American Lands Environmental MitigationProgram (NALEMP) . This agreement includes the development of a Strategic ProjectImplementation Plan (SPIP) .THE SPIP• Identifies DoD impacts• Discusses how DoD activities affects land use• Provides a time frame for anticipated land development• Proposes desired remediation of DoD-impacted areas• Estimates the cost of remedial activities• Prioritizes the remedial actionsThe SPIP is a tool to express tribal members' ideas and concerns to the DoD, and will serve as abasis for further discussions with the DoD regarding military impacts to Gambell . The SPIPdoes not guarantee that any DoD money will be available to perform removal actions at Gambell .APPROACHA community survey was performed in cooperation with the Native Village of Gambell (IRA) tosolicit information from community members regarding the whereabouts of remaining militarydebris, primarily buried debris . The survey forms included a site map of the Gambell area(Appendix A) and were completed by the survey participants to better locate the areas inquestion . The surveys were compiled, a priority list completed (Appendix A), and theinformation combined with information gathered through previous remedial investigations and,removal actions . Previous restoration activities were performed under the DefenseEnvironmental Restoration Program (DERP) for Formerly Used Defense Sites (FUDS) andmanaged by the United States Army Engineer District, Alaska .To aid in the development of the SPIP, a geophysical investigation of several sites identified inthe community survey was performed in the summer of 2000 (Golder, 2000) . Seven sites wereinvestigated covering an area of approximately 13 acres . The purpose of the geophysicalinvestigation was to confirm the presence and estimate the quantity of suspected buried metallicdebris resulting from military activity . The results of the geophysical investigation were used inthe SPIP to help estimate cost of remediation (Appendix B) .Montgomery Watson completed a visual inspection of nine former Civilian AeronauticsAdministration (CAA) buildings to identify the possibility of the presence of friable asbestos .Seven of the buildings are currently being occupied by local native residents . The field notes arelocated in Appendix C .Gambell Strategic Project Implementation Plan - Final Page IDecember 2000LOCATIONGambell is located off the coast of western Alaska (Figure 1) on the northwest tip of St .Lawrence Island in the western portion of the Bering Sea, approximately 200 air miles southwestof Nome, Alaska . The island is accessible by boat or regularly scheduled or charteredcommercial airline from the city of Nome . Gambell is 39 air miles from the Siberian ChukotskPeninsula. The village of Gambell is built on a gravel spit that projects northward and westwardfrom the Island . The location of the site is 63 degrees 47 minutes north latitude and 171 degrees43 minutes west longitude, in Township 20 South, Range 67 West, Kateel River Meridian .SITE HISTORYThe Gambell area was used by the United States Army (Army), United States Navy (Navy), andUnited States Air Force (Air Force) from approximately 1948 until the late 1950s . Variousfacilities around the village of Gambell were constructed to provide housing, communications,and other military functions . The Air Force operated an Aircraft Control and Warning Station asearly as 1948, but the site was abandoned about 1956 when a similar facility was constructed atNortheast Cape on the northeast end of St . Lawrence Island . The Army operated a base atGambell that reportedly supported several hundred personnel . A search of historical recordsfailed to yield base plans or site information from the Army Installation . However, according toWinfred James, a local Gambell resident, the Army was active in Gambell from 1954 to 1957 .Information regarding Navy activities at Gambell is sparse ; however, their presence in Gambellis known to have occurred during the beginning the cold war .Extensive background research into Navy activities at Gambell yielded no pertinent information .Air Force property was transferred to the Bureau of Land Management (BLM) in 1962, andArmy property was transferred to the BLM in 1963 . All DoD structures were demolished,burned, or scavenged, and the debris buried on site .Today, as a result of the Alaska Native Claims Settlement Act of 1971, St . Lawrence Island isheld jointly by Sivuqaq, Inc . in Gambell and Savoonga Native Corporation in Savoonga . Landnot owned by Alaska Natives on St . Lawrence Island is limited to state lands used for airstripsand related facilities . The area around the village of Gambell is classified as a FUDS under theDERP .Gambell Strategic Project Implementation Plan - Final Page 2December 2000JOB No . 1189098.040101TIME: 15-DEC-2000 10.46FN-E : 5.\Cod\ Proj\ueace\ gambeN\geowrkpln \fgl .dgn_lrnb el I,it . Lawrence Islandi.~t. ift^t3 Lauenoe~IslandAfi"~r~AJ~ttN'P"Ok~WN7G~ao~gMONTGOMERY WATSONAnchorage , AlaskaRSOURCE : U . S . Geological SurveyReston , Virginia 22092, 1976St . Lawrence , AlaskaN6265 - W16830 ,60x210Surveyed 1948, Compiled 1957Minor Revisions 1974Scale 1 :250,000 Contour Interval 100'TFIGURE 1U .S . ARMY ENGINEER DISTRICT, ALASKAGAMBELL, ST. LAWRENCE ISLAND, ALASKASTRATEGIC PROJECT IMPLEMENTATION PLANVICINITY MAP - GAMBELL.~ r . t' -44SITE DESCRIPTIONSThis section presents the sites (areas of concern) identified by the community survey (AppendixA) as being impacted by former DoD activities, the primary focus being buried debris and areaswhich have been identified for future land development (Appendix D) . The site descriptions arepresented in numerical order for clarity . Table 1 lists the sites in order of community priority,provides a brief site description, and presents the preferred remedial alternative and its estimatedcost . Figure 2 shows the site boundaries, areas of concern identified in the community surveyforms, and locations of geophysical anomalies . Figure 3 presents historical photographs ofGambell showing the locations of the former military sites and areas where there is a potentialfor buried material .SITE 1 A , ARMY LANDING AREASite IA, the Army Landing Area, is located in the central portion of North Beach where twowell-established all-terrain vehicle (ATV) roads intersect . It is located east of an area that iscurrently used to beach whaling boats . Near the intersection of the two ATV roads, there is asubstantial amount of buried metallic debris, primarily Marsten matting, which continues to beexposed and reclaimed by the shifting gravels along the beach area . This site also includes ahalf-buried crane. The debris presents a physical hazard to ATV and snowmobile traffic .SITE 1 B , NORTH BEACH/AIR FORCE LANDING AREASite 1B, the former Air Force Landing Area, is located adjacent to a beach berm approximately1,900 feet east of the southeast corner of Site IA . As with Site 1A, it is believed that there is asubstantial amount of Marsten matting and other buried metallic debris remaining at the site .Portions of buried debris are exposed periodically as the gravel beach deposits shift . This areareceives a large amount of ATV traffic due to its proximity to the bird rookeries, which areutilized by the villagers for both subsistence and tourism activities . The debris presents aphysical hazard to ATV and snowmobile traffic .SITE 1C, NORTH BEACHThis site runs the majority of the length of North Beach and consists of underwater metallicdebris located just offshore . The majority of the debris is thought to be Marsten matting used toconstruct the two landing areas, Sites 1A and 113 . Community survey information also noted thatmiscellaneous metallic debris, such as wire and drums, were disposed at the shoreline . NorthBeach is the primary area used for launching boats in Gambell . The underwater debris presents apotential physical hazard to villagers while launching and returning to shore .SITE 2, FORMER MILITARY HOUSING/ OPERATIONS BURIAL SITEThis site is located approximately 600 feet south of Area 1B . A partially-buried concrete padremains on site and presents a physical hazard for ATV and snowmobile traffic .Gambell Strategic Project Implementation Plan - Final Page 4December 2000SITE 3A, FORMER COMMUNICATIONS FACILITY BURIAL AREAThe former Communications Facility is located approximately 700 feet southeast of Site 1B, and750 feet northeast of Site 2 . Items that were reportedly buried in the area include : two Jameswayhuts ; a 15-kilowatt power plant containing auxiliary generators, transformers, oils, fuels, andbatteries ; and approximately 5- to 10-gallon glass carboys of sulfuric acid (E&E, 1993) . Resultsfrom a 1994 geophysical survey of the site indicate the presence of buried debris (Golder, 1994) .Buried debris in this area presents a potential physical hazard (e .g., sinkholes) to villagers whouse the area for subsistence activities associated with the nearby bird rookeries .SITE 4E , WESTERN FACE OF SEVUOKUK MOUNTAINThis area consists of the steeply sloped western face of Sevuokuk Mountain . The area containsvarious types of cabling used to support military activities at the summit . The debris represents aphysical hazard to villagers who use the area for subsistence activities .SITE 5, FORMER TRAMWAY SITESite 5 is located approximately 1,900 feet southeast of the former military power facility and isimmediately adjacent to the new village water supply . In 1997, Montgomery Watson conductedan investigation of two large geophysical anomalies north-northwest of the Village well house .Debris was removed or identified as not being an environmental or human health threat . Onesmaller geophysical anomaly remains just north of the well house (MW, 1997) . This site isthought to contain buried transformers and wire . The presence of buried debris at Site 5 maypose a hazard to the village water supply .SITE 6 , MILITARY LANDFILLThis site is located north of the Gambell High School and east of the new housing area . URSCorporation reported there to be approximately 3,000 drums filled with human waste buried atSite 6 during military activities at Gambell (E&E, 1992) . The barrels containing human wastewere reportedly treated with lime prior to final sealing, and then buried underneath a thin soilcovering (URS, 1985a) . During a 1994 Remedial Investigation (RI), a geophysical survey of thesite confirmed the presence of substantial subsurface metallic debris (Golder, 1994) . In 2000,additional geophysical surveys were performed to support the SPIP at Grids H, K, and M, eachof which partially overlaps Site 6 (Figure 2) . Anomalies associated with Grids H and K arewithin the original boundaries of Site 6, while anomalies at Grid M are outside the originalboundaries of Site 6 (Golder, 1994 ; 2000) . For simplicity, the geophysical survey Grids H, K,and M have been combined with and are now referred to collectively as Site 6 .The Bering Straits Regional Housing Authority is proposing to construct 8 to 10 additionalhouses east of the existing homes located adjacent to Site 6 in the near future (Appendix D) .This would place them in the vicinity of Site 6 and the buried debris . The buried debris maypose difficulties in the construction of planned and future housing projects in the vicinity .Gambell Strategic Project Implementation Plan - Final Page 5December 2000SITE 7, FORMER MILITARY POWER FACILITYThis facility was reportedly buried north of the Municipal Building in an estimated 375- by 85foot area .Geophysical surveys performed in 1994 and 2000 suggest that there is buried ferrous materialremaining at the site (Golder, 1994 ; 2000) . The City of Gambell is planning the construction ofa fire hall in the immediate vicinity of Site 7 . Buried debris may underlay the area proposed fordevelopment and hinder the construction efforts .SITE 8, SMALL ARMS AMMUNITION BURIAL SITEThis area is located approximately 1,500 feet south of Troutman Lake near the natural ridge ofthe shoreline . The United States Army Engineer Division, Huntsville (USAED) removedapproximately 800 30-caliber rounds in the summer of 2000 (USAED, 2000) . An areaapproximately 15 feet square by 3 feet deep is thought to contain additional small arms roundsand associated metallic debris, such as empty ammunition cans, all of which are intermingledwith the beach gravels .Site 8A, Eastern Edge Of RunwayThis area is located immediately east of the current runway . The construction of the originalrunway by the military used Marsten matting to stabilize the soils . The current runway, nowowned and maintained by the Alaska Department of Transportation and Public Facilities,overlays the original runway and Marsten matting . Large sections of the Marsten matting haverecently been exposed due to severe weather events . This area is heavily traveled by ATV andsnowmobile traffic ; the exposed matting presents a physical hazard .Site 8B , West Beach, Old Gambell Village SiteThis area is located just south of what is commonly referred to as Old Gambell Village .Miscellaneous metallic debris, including numerous 55-gallon drums and a Jeep, has been buriedat this site . The presence of buried and partially-exposed debris at this site poses a physicalhazard to villagers who actively excavate the area .Site 8C, Navy LandfillThis area is located northwest of the former Civil Aeronautics Administration (CAA) housingand south of the village landfill . The landfill was thought to have been constructed during Navyactivities in Gambell, when they utilized the former CAA housing . It was inspected during the2000 field visit and was suspected to contain some asbestos-containing materials (ACM) .Gambell Strategic Project Implementation Plan - FinalPage 6December 2000SITE 13, FORMER RADAR POWER STATIONThis area is located east of the unnamed pond just south of Troutman Lake . The radar powerstation consisted of two wooden Quonset huts, one long wooden building, and a number of 150foot towers that were reportedly demolished and buried on-site (E&E, 1993) . Geophysicalsurvey data collected in 1994 indicates the presence of buried debris (Golder, 1994 ; MW, 1995).SITE 15 , TROUTMAN LAKE DEBRIS BURIAL SITEThis area is located along the northern edge of Troutman Lake . Marsten matting, wire, 55-gallondrums, and other metallic debris can be seen from the shoreline of the lake on a calm day . In thespring of 2000, the USAED performed a geophysical survey over a 144-acre area of the northernedge of the lake, focusing specifically on unexploded ordnance . The presence of miscellaneousmetallic debris was confirmed . (USAED, 2000) . It is estimated that less than 1-ton of metallicdebris is present in Troutman Lake along its northern shore . The debris presents a physicalhazard to those who recreate on and in the lake during the summer months .SITE 16 , GAMBELL MUNICIPAL BUILDING SITEThis site consists of a 35- by 55-foot area of stained gravel, located immediately west of theMunicipal Building . The staining is most evident after a rainfall event . It is uncertain whetherthe staining is from military actions, village activities, or a combination of both . However,historical photographs of the area show this area to have been heavily used by the military .Surface and subsurface soils samples collected during the 1994 RI confirm the presence ofpetroleum contamination . The presence of the contaminated soils may hinder futuredevelopment of the area by the Village of Gambell .SITE 17 , AIR FORCE LANDFILLThis site is located immediately south of Site IA and immediately north of Site 6 . There are twolandfills in this area , which contain materials that were regularly burned and covered (E&E,1993 ). During the 1994 RI , a geophysical survey of the site indicated the presence of subsurfacemetallic debris and disturbed ground (Golder, 1994; MW, 1995). Due to its proximity to NorthBeach , this area is prone to severe weather events . The buried debris has the potential to becomeexposed and present a physical hazard to ATV and snowmobile traffic .SITE 18, FORMER MAIN CAMPThis area is adjacent to the northeast end of Troutman Lake and extends from the location of thecurrent Municipal Building east to the High School . There were reportedly ten 25,000-gallonfuel tanks located at the site during military activities . Geophysical survey information collectedduring the 1994 RI indicates the presence of buried metallic debris (Golder, 1994 ; MW, 1995) .Due to its proximity to Troutman Lake, the site is subject to extreme weather events and burieddebris has the potential to become exposed and present a physical hazard to ATV andsnowmobile traffic .Gambell Strategic Project Implementation Plan - Final Page 7December 2000SITE 19 , DIATOMACEOUS EARTHThis area is located east of Site 18, adjacent to the northern edge of Troutman Lake .Diatomaceous earth was left buried in-place from the former military water treatment facility .The area is subject to erosion from storm events associated with Troutman Lake and ATV trafficalong a well-established trail that extends along the northern edge of the lake . As thediatomaceous earth becomes exposed, it becomes a physical hazard for ATV traffic due to itsphysical dissimilarity with the surrounding, gravelly soils .SITE 20 , SCHOOLYARDThis site is located just northeast of the former main camp . The schoolyard contains two rubblepiles that consist primarily of concrete rubble and rebar, plus one semi-exposed concrete slab .These present a physical hazard for the children attending school, as well as a physical hazard forATV and snowmobile traffic .SITE 21 , TOE OF SEVUOKUK MOUNTAINThe area located at the toe of Sevuokuk Mountain, just southwest of Site 5, it is thought thatmiscellaneous wire and metallic debris was buried in this area during military activitiesconsisting of the construction and subsequent decommissioning of the tramway that served theAir Force radar site at the top of Sevuokuk Mountain . The presence of buried debris at this siteposes a physical hazard to villagers who actively excavate the area .SITE 22 , FORMER CAA HOUSINGThe former CAA housing is located near the northeastern edge of what is commonly referred toas Old Gambell . The CAA housing consists of six homes and one lodge originally built as aweather data collection facility to help guide Russian pilots during World War II . The housingwas also used by the Navy and Army in the cold war era during their efforts to lay submarinedetection cable off Gambell . It is unclear when the CAA housing was transferred to the currentowners . The primary concern regarding the CAA housing is that of asbestos-containingmaterials commonly used in homes of this era .SITE 23 , DEBRIS FROM HIGH SCHOOL CONSTRUCTIONThis area is located due east of the Gambell landfill and consists of metallic debris unearthedduring the construction of the Gambell High School . The area is said to be 150-feet long, 70 feetwide, and 20-feet deep . The cost impact to the City of Gambell will result from the reduction ofspace available in the city landfill, now occupied by the military debris . Currently, this site doesnot present a physical hazard ; however, the potential for the debris to become exposed in thefuture and pose a physical collision hazard does exist .Gambell Strategic Project Implementation Plan - Final Page 8December 2000SITE 24, SOUTH OF MUNICIPAL BUILDINGThis area is located south of the Municipal Building along the northern shore of Troutman Lake .A geophysical survey of the area was conducted in the summer of 2000 (Grid J), and subsurfaceanomalies consistent with metallic debris were found . The area is subject to erosion from stormevents associated with Troutman Lake, and ATV traffic along a well-established trail thatextends along the northern edge of the lake . If exposed, the buried debris would pose a physicalhazard for ATV and snowmobile traffic .SITE 25 , VILLAGE OF GAMBELL, SOUTH HOUSING UNITSThis area is located between the three rows of the south housing units . During Village SafeWater (VSW) construction in 1997, oily soils were encountered at the permafrost interface .Historical aerial photographs identify areas of disturbed ground, a former trench and a former pitin the vicinity where the oily soils were encountered (Figure 3, Photo 7) . Site 25 has not beenformally investigated and the type and extent of contamination has not been quantified .However, the presence of contaminated soils at the permafrost interface poses a potential threatto the water supply of the houses in the affected area .Gambell Strategic Project Implementation Plan - Final Page 9December 2000COSTSThe costs estimated (Appendix E) for the SPIP are in year 2000 dollars and are inclusive ofadministrative, engineering and construction costs . Unit cost rates presented in Table 1 are basedon a one-time mobilization effort, utilization of shared resources, and are inclusive of allproposed removal actions . Due to the remote location of the site, multiple mobilization effortswould increase the costs of remedial activities substantially . Each additional mobilization wouldcost roughly the same as a one-time mobilization for all proposed removal actions . Thus, tomaximize the effectiveness of the removal actions while minimizing overall project costs, a onetime field effort was used for estimating purposes .In general buried debris would be excavated and segregated into recyclable metallic debris, nonhazardous debris, hazardous debris, and asbestos containing material . All excavated debriswould be shipped off-site via barge for either recycling or disposal in an approved landfill .Petroleum contaminated soils would be treated on site and the excavation back-filled with localfill material.With proper training, most of the projects included in the SPIP could be performed by residentsof Gambell . It is estimated that up to 30 Gambell community members could be employed tosupport the remedial activities . Potential types of employment positions include :• Environmental Technicians• Equipment Operators / Construction Workers• Asbestos Abatement and Inspection• Solid Waste Handling• Hazardous Waste HandlingGambell Strategic Project Implementation Plan - FinalPage10December 2000WESTRUNWAYSCALE IN FEET0asi. s~1200SMALL ARMS AMMUNITION BURIAL SITE10I8A8"~Zp ...BERING SEA~$p0000OLD GAMBELL -ap024_..i^m,OULAKEMUNICIPAL°p ,pWATER TREATMENT --_ .'-'---'a16p00000 0000' p0000 p°pap ppppNORThp pppp:C0 0aCc0 0000 LANDFILL NO 1HIGH SCHOOLARMY LANDFILL1994 SUMMER LAKEO U ~`~BOUNDARYNAYVAGHAOLAKEIUNNAMEDeNO.13I4 AREA\12Z "10:''d,'.-~~~~~•-i//3~F-y15,.pK'IOU~-/-!NHL\0-ARMYauoluc~!oraoae AREA20-- .J21IRAT ON GALLERYINO7 CURRENTLY UBEDI\~ 10II~11FORMERNEW NLLAGE/~11II~,iI'+-.I1.~~IIIIIIIIaD~B RWL $IIE`,/WNDING AREAl\\\~~.7A ,\ FORMER COMMUNICATIONS;FACNTY BURIAL AREAi:/Il~4.II2','`Y//~•\/.•_MIDTAAYli Housmc~~/II~_/I~ .\\\9uI/~-FORCE TRAILaJ}1FORMER AIR FORCE`~ IIII ~ ~ -r„`a, / R40M SITEY ~'-~•/i``.~11111111MONTGOMERY WATSONAnchorage , AlaskaAREAS OF CONCERN© GEOPHYSICAL SURVEY LOCATION PERFORMED IN 2000GEOPHYSICAL SURVEY LOCATION PERFORMED IN 199411C/,II'~V44LANDFILL.~~N0 .2 ~BURIEAMEA ANCHORA~O10 0000II.+i~,-at--------------NOFILLCRYCA0. HOUSING25S pp p0 o pBUILDINGppp p o o pJNLIAGE OF GAMBELL0UO0 VILLAGE WELL0p'0o ppp0'20pGEOPHYSICAL SURVEY LOCATIONPERFORMED IN 1996GEOPHYSICAL ANOMALIESFIGURE 2U .S . ARMY ENGINEER DISTRICT, ALASKAGAMBELL, ST. LAWRENCE ISLAND, ALASKASTRATEGIC PROJECT IMPLEMENTATION PLANAREAS OF CONCERN-JOB No. 1850566 .180101.N-60 Army landing area with bargea© Army landing area , off loading of drums, note marsten matting .©Tramway site (winter)og'-~I.r`"'`,r4" r ° t".err .•°~~~'0 Army camp . Closeup of potential ammunition storage adjacent to Troutman lake .~'; ' r. `' ,.. . .~ra~. ,,'a°. r+~•a v'„'{t`°t0 Army camp 1955L', *•'r~ K ' :.fi ,;.'''~ ;. ~'0 Areas of militarY presence .0 Areas of physical disturbance where there is potential for buried material (trenches,pits, depressions , mounds , and disturbed ground) and former military installationlocations . The areas of interest were com iled b the U.S. Arm To o ra hicEngineering Center from aerial photographic documentation taken in 1948,1955,1972, 1973, and 1980.FIGURE 3MONTGOMERY WATSONAnchorage , AlaskaU .S . ARMY ENGINEER DISTRICT, ALASKAGAMBELL, ST . LAWRENCE ISLAND, ALASKASTRATEGIC PROJECT IMPLEMENTATION PLANHISTORIC SITE PHOTOGRAPHSTable 1Site or Location'Description18Former main camp8A2Eastern edge of runwayFormer militaryhousin o erations burial siteFormer military power facility(includes geophysical surveyarea L)Army landing area7,16 & 71A16 & 256 & 1781135133A15ICCleanup of Former Department of Defense FacilitiesGambell Municipal BuildingSite and Village of Gambell,South Housing UnitsMilitary landfill & army landfill(includes geophysical surveysH, K, & M)Small arms ammunition burialsiteNorth beach/ Air Force landingareaFormer tramway siteMilitary ImpactEstimated Cost forRemediationBuried metallic debris,potentially buried tanks .Exposed Marsten mattingBuried concrete slab .Excavate buried debris and recycle off site .Excavate buried debris and recycle off site .Excavate concrete slab and dispose off site .$300,000$30,000Buried metallic debrisExcavate buried debris and recycle off site .$145,000Buried metallic debris andone half-buried crane.Petroleum contaminatedsoils, potential buried debris .Excavate buried debris, remove crane, andrecycle off site .Excavate buried debris, and treatcontaminated soil .$280,000Buried metallic debris andbarrels of human waste .Excavate buried debris and dispose/recycleoff site.$120,000Buried small arms munitions Excavate buried debris and dispose/recycleand associated metallicoff-site .debris .Buried metallic debris .Excavate buried debris and recycle off site .$10,000Buried debris and possibletransformers in closeproximity to village watersupplyFormer radar power stationBuried metallic debris .Former communication facility Buried wood and metallicburial areadebris, transformers, oils,fuels, batteries, and glasscarboys of sulfuric acid .Troutman Lake debris burial site Metallic debris in TroutmanLakeNorth BeachUnderwater metallic debris,(underwater debris)primarily Marsten mattin .Gambell Strategic Project Implementation Plan - FinalDesired Remediation$140,000$1,260,000$30,000Excavate buried debris and recycle off site .$37,000Excavate buried debris and recycle off site .Excavate buried debris and recycle off site .$20,000$5,000 .Raise underwater metallic debris and recycleoff-site .Raise underwater metallic debris and recycleoff-site .$20,000$40,000Page 13December 2000Table 1 (continued ) Cleanup of Former Department of Defense FacilitiesSite or Location '4EDescription19Western face of SevuokukmountainDiatomaceous earth20Schoolyard21Toe of Sevuokuk Mountain22Former CAA housing23Debris from high schoolconstruction8BWest Beach Old GambellVillage - siteNavy landfillSouth of Municipal building8C24[ (geophysical survey area J)Itemized Project Cost'Mobilization Cost'Trainin 'Total CostMilitary ImpactDesired RemediationSurface cables running along Remove cable and recycle off site .mountainside.Diatomaceous earthExcavate diatomaceous earth and dispose offsite .Concrete rubble debris piles Remove mixed concrete debris and disposewith protruding rebar andoff-site .partially-buried concreteslab .Buried metallic debris andExcavate buried debris and recycle off site .cable .Potential asbestos-containing Inspect, sample and analyze, and abatematerial .asbestos-containing materialMetallic debris excavatedExcavate buried debris and recycle off site .during construction of theGambell High School andreburied east of the villagelandfill .Buried and/or partiallyExcavate buried debris and recycle off site .ex osed metallic debris/jeep,Buried landfill material .Excavate buried material and dispose off site.Buried metallic debris.Excavate buried debris and recycle off site .--------Estimated Cost forRemediation$50,000--$5,000$195,000$5,000$50,000$240,000$10,000$25,000$5,000$3,025,000$350,000--$250,000$3,625,000-Sites are listed in order of community priority .Costs are based on shared resources between sites, if performed on an individual basis the costs will be significantly higher' Costs are for off-site education/training for up to 30 Gambell community members-- Not applicableGambellStrategicProjectImplementationPlan-FinalPage 14December 2000REFERENCESEcology and Environment , Inc . (E&E). 1992 . Inventory Report Gambell Formerly UsedContract No. DACA85- 91-D-0003 .Defense Site St . Lawrence Island , Alaska .December .Ecology and Environment, Inc . (E&E) . 1993 . Chemical Data Acquisition Plan-Site Inventory "Update-Gambell, St . Lawrence Island, Alaska-Final-Contract No . DACA85-91-D0003 .February .Golder Associates (Golder) . 1994 . Final Report-Geophysical Survey InvestigationSt. Lawrence Island, Alaska, USA . November 3 .Golder Associates (Golder) . 2000 . Draft Geophysical Survey Investigation Native AmericanLands Environmental Mitigation Program Geophysical and Cooperative AgreementSupport Gambell, St . Lawrence Island, Alaska. August 25 .Montgomery Watson (MW) . 1995 . Final Remedial Investigation Gambell St . Lawrence Island,Alaska . Contract No . DACA85-93-D-001 1, Delivery Order No. 0003. January .Montgomery Watson (MW) . 1997 . Final Investigation of Geophysical Anomaly, Gambell, St .Lawrence Island, Alaska .Montgomery Watson (MW) . 1999 . Final Phase II Remedial Investigation, Site 5, Gambell, St .Lawrence Island, Alaska .Oil Spill Consultants . 2000 . Remedial Action Report .URS Corporation (URS) . 1985a. United States Army Corps of Engineers, Alaska District .Defense Environmental Restoration Account . City of Gambell and Northeast Cape,St. Lawrence Island, Alaska Preliminary Reconnaissance : Surface and Subsurface WaterSampling, Gambell, Alaska, Contract No . DACA85-85-C-0036, Anchorage, Alaska .December .URS Corporation (URS). 1985b . United States Army Corps of Engineers Alaska District .Defense Environmental Restoration Account . City of Gambell and Northeast Cape,St. Lawrence Island, Alaska Volume 2 : Part 8 Final Environmental Assessment, ContractNo . DACA85-85-C-0036, Anchorage, Alaska . August .URS Corporation (URS) . 1986 . United States Army Corps of Engineers Alaska District .Defense Environmental Restoration Account . City of Gambell and Northeast Cape,St. Lawrence Island, Alaska Sampling Plan, Contract No . DACA85-85-C-0036,Anchorage, Alaska . March .United States Army Engineer Division , Hunstville (USAED) . 2000. Forthcoming .Gambell Strategic Project Implementation Plan - Final Page 15December 2000United States Army Engineer Research and Development Center Topographic EngineeringCenter. 2000 . GIS-Based Historical Time Sequence Analysis, Gambell Sites, Gambell,Alaska, Final . September .Gambell Strategic Project Implementation Plan - Final Page 16December 2000APPENDIX ACommunity SurveysMONTGOMERY WATSONNATIVE VILLAGE OF GAMBELLP.O. Box 99 • Gambell, Alaska 99742 • (907) 985-5346 • FAX (907) 985-50148 March 2000MEMORANDUM for : Bonnie Mclean (MW) FAX # 907-248-8884FROM : Michael Apatiki NVG IRA Council/DoD CA ManagerSUBJECT : Priorities (SPIP) Survey at Gambell1 . The priorities of the Gambell SPIP survey in January and February are listedbelow . The priorities are based on the number of first and next sites combinedfrom question number six . The next site added to the first site, that is thenumber of next site list that are the same as the first site .2 . The top priority or the first priority of the survey questonaire is Area 18 . Thenext priority is Area 2 . These two are the overall priorities . The people surveyedmostly used the geophysical investigation numbers to pinpoint their priorities .The priorities are from top to bottom .Area 18 ----------------------------------27Area 2 ----------------------------------24All Military debris in Gambell -----------17Area 7----------------------------------16Area 17------------------------------- --15Area 8 Ordnance --------------------------15Area lA---------------------------------- 12Area 16 ----------------------------------11Area 6---------------------------------- 7Area lb ---------------------------------- 5Area 5---------------------------------- 5Area 13---------------------------------- 5Ammunition under lake -------------------- 5Area 4A & 4B----------------------------- 4Area 4B ---------------------------------- 4Oily soil in village area ---------------- 4Area 1 ---------------------------------- 2Area 3, tractors ------------------------- 2Drums under the lake---- ----------------- 2All north beach ---------------------- --- 2Area 4 -------------------------- 1Area 12 ------------------------- 1Cables at mountain -------------- 1Debris east of new housing ------1Tractors , weasels---------------1Transformers , fig 1, #2---------1Electrical equipment------------1Transformer A5------------------1Mountain top--------------------1White stuff , east of Area 18----1Debris under school playground--1New village water supply area---1Area near Area 16 --------------- 1Drums / wire at historical site---14M__1q1'f_41Michael ApatikiNVG, Gambell, Ak907-985-5474"Established in 1934, dedicated to serving the members and preserving the culture:"NATIVE VILLAGE OF GAMBELLP.O. Box 99 Gambell, Alaska 99742 • (907) 985-5346 • FAX (907) 985-501428 March 2000MEMORANDUM for : Bonnie McleanFROM : Michael ApatikiSUBJECT :(MW)Telephone # 907-985-5474, FAX # 907-985-5014Steelmats / debris along North Beach and Ocean1 . Enclosed is a ahort narrative of the Gambell North Beach and the submerged debris .2 . If you have questions call me at above number .Michael ApaGambell Project ManagerGambell, Alaska"Established in 1934, dedicated to serving the members and preserving the culture"~TEELMATS/DEBRIS ALONG NORTH BEACI AND OCEAN1 . The orange mark d area indicates where the subme ged steelmats are along the watetat the North be ch of Gambell . Some Military amrunition and ordnance might be unOrKittilngook bay and other debris like drums etc .2 . The steelmats a e scattered under the water froto sea . Some s eelmats are buried like all themovement of the waves . They surfaced then is bthe shoreline to about 200 feet utther debris that is buried by thied again .3 . The depth of th water along the shoreline fromittiingook bay to Northwest Cape . isvery uniform .o 20 feet from the shore is abo8 feet deep from Kittilngook ba toNorthwest Cape .40 feet offshore is 16 feet dee1) .T4,,,,, he steelmats aid other debris is 1 feet deep t about 40 feet deep from the shotVChours on the No th Beach ._ntcalm clear day . They could5 . The steelmats c uld be located by scanning by bbe retrieved by using hooks .The ones on the shore ine could be just picked up . heother militaryebris is not likely because of s ro g currents moving it around .:hwe Cape'Kittlingo ok Bay-Boatracks__P~`Gambell66Mis~ian At a 4- 7 2-Rock11L), 615Sevuokuk MtRE R i~ e ,r- of 5arveR% ; V % a u,a.kd e b rrsu.v &ce debM•• = &ri edaft . = Uh dtrwa4r d.L . = Parf ;ally sjebrI S. -Fari~ : Seep Survey-Par~' y pe. of d eb r /SnrrrrcrWooK gay•l•./ry1•I . ~J.~~I ;~HIAI W L .~~~L'~'~'•r. .~~.A' .Ap:Au lOp tt * .~I*R72dlgI :.1 ;'r .t. 'L!''/ ~'r~fF1'fr Y r,451AMA.~pmv-af rt~e. t mutt:03 40tY•e(Dve.l0"^Ltn feu,Laksr--fad +4,1,E 2,f !n3 - - /v"AILIf kya,9l'la. .j 5he- S fewto S a rpr+e v,k h rgrdWill_. .. . ` ..bu•''la,/41pa liiLaw- c-,&A:1~repoibu.~',rJ t rl21,0.i?0•:i,..rrtf~~•r .bA•[Sr y. 10'72.1.641-k u Mt i.h' .11aa~•t•,ilk• t-anLakefy1/y•` 1 ./OfSummary of Sites Identified for lnvestigatlon /Clean up at Gambeti, AlaskaName of PersonSurveyedK MSS/ADate ofSurveyPhoneNumberell.h $ Jan loseJl I If~ '/~ 11Ilh(lAti e eira" Qrvnr, f/a cfiCr ~$fBCI Jh41'sA It2/et eone,efe-/ Tan o0A rmy hu.+'SLKNOK- oe r /974th aoKOOZ4lalitn117 Q0Uio e~J l 11~t i el/ T erSoma /oa~' ~,'era idJ Sah 0 DCarl bell yicia. Srnla_Dfums~ kllres/rxe alsi resMilitar yar.NsPC GoefoKslOrdnanctsll/Tare 00rM0VA/PtC,Ah 0 Y-/easy $j (~49&,4 2_/h/)jovn /atin PrJrr/cLa//f--wC0. JO d yBd/7/CtZ:~ /~Ora Zme` YL(/t-c'j .~y rrafia2geaMitt..au-~/iRa,nt dc-S .}~ i QInside. S1ns ;dt18Si eOut*-tToj+ I Und erou nla~ o.nd ot 1-a atourour.fai ~",-are yreu. dCras{. on ATVren 1'/reaI rea, /I9Oh 'r1pr./A .lfervoConW4Hr1ZAKy aMV /z/ DEKSCoh tJ'en Vi ranre,,. tLdCer, cs«.a__err,C3ad S, a/~,cw (r%/tc. ~QFi,3 / Area gel(aLlid47V rovesretrea r ion/ ..rr/j /2D Tci lf/o/ 7-V/.e0 WA7tH/AJ1..1>?ieo A~ cNecltfj Vi ~'us5n~r <IVreti 4 -t7de t, ii in__l,Jilufa ___ous nnTvu•i s1'F,&JA(C.~ewcK~ AConlrwkea ,AA re o.F/Ua re h ous. ny. Shinq.i~wf4.r~NesvJinreafoniYCniti.. drlenr/t1C~nf9sj J 9.04. C vv,/farm~~ConninvJcer nc/ta.6efti/ .f.-.rl,L'SGSK:d t do sw..~rpe rres CGuse /,Lr0.Cl'/finlit vent, __hi __0,l~~r1~ +^ Y• ___~9Tr/,'rs~oMa .aCen-ta.w;A t4.6I24/RDILWit7dH/NbOVS~HeS~P/SHIN(.Ca,t m :~nk/Pnr e, ~nCr t,hovSi ..~L.pa ctJ reLor~ionufrti7F,rIFISH/N` SPov r 6e su+atcher, P ra ,s/a ~rcf7 /w/Yi./rrSoVYC C..-~rra 2~•a ar oi ~ rsCon crrrrn . .lt,rPCarr d/f/La (/9F/6m ou.• hri/nrea 1Impact of Debris Future Land Use ( 7) Is Debris Hazardous ? (8)(6)rusty earl -K o; lrra a con n a.c,Ye,Ye {r efta fcl. .o(~/Cal P/~ W afclOft drs b tJtJ.t/JA/cMore rI' - otrca }ionN/kn n r• tJr<S wi..C reo, 7Bead,iI ryCe of rvia Len 'Nrats, en .J .nRf/10 _T". ooIi1~C{y~t roe A l fah 6ol DK Fl6e rf'- . . Ce e.r f- $edr. s u..e.5c)-oo aref/ Tractors,Sri„ asnear~~AdVsc-Jl /i0.--Oo1I lJSite Location ( 5)vf;ns se acre469 01,Stnves, runt,td I rtis Ms leak Mat,/r/Tan ooL \na Mo +~C+ .bra6 lea,, .eed of C taw Sc4de1AeSeJm'iic.At:bC(rer. L{yec3 i b\ a. Plants ~b :rdc Confgn,n .haGa~• bef l d- Sc:hov4/a y erSovnod- purq .,4ec+ /,~ 4aof Saft.!SaLiuY.ar i -/' e/erJS ~r ~igZar~d__rxic Ckcr,ita(0.rA- Corrl~rrsra%~sg-,"rcpwadccrc , q b,YtA I~yrC,@nviro,~rr t bee,Sank e aS waSOaLA&I drvf,S,pra~farPwrj~ .c,:ri iR.e, W,'res; Cemad ar..y +a.dfufo,i CoNS, moral8,%.2,+7,!,hra yQMiIi}ary -jeepSo 'cen a a :n2.2 3hrPrix,4eWtosefirae t! s,raw, f ovb n c etres- heaL4`hazarea tJ/ke.C.~.1~reM_ PLT? ;ra wa7cl+,hf-rC arvsfia- k a f 2wt-s ,irs f/ / Z A .µ „e rf L per e a- o,ni .BiracThrfContaw .n,c .oft W d a c erseo.v c~f bra Z. C / rsT of maltledff+rvs;~. Gtreela/~r"'v"' }`o'' atLafLt LAO-O['a l ~praHuk c,.tar,LeaA z a a-5641OrCon~u~+, .nstfdn SW IMMiNborro~T~,or,re AC re at+°AIK. .0.F.se .~SPo* 7Ii'4-a~~d ~y las' .~.'llN' area la-a ds "al~ l~A-Urr~Summary of Sites Identified for Investigation /Clean up at Gambell, AlaskaName of PersonSurveyedDate ofSurveyantes7 ?an 00e . SU Dohal1 aH ow vk Wil(isan 00l Jan 00~I/ wtCY 11 Earl 00aoosh~ Wa e r l4 an ao00 Al-(E 19 Tan 00h 6IOS~A SSM aStS11 Towl 0[lL~l)iah l9 In ooi fan aO~oGgSfin dAdcrsalan bU cDescription ofDebris (3)PhoneNumberMap Location ( 5)" a rnc,y-) wI4fl 4i ^rwVf etCChants/ wewt4,Arrn.ySite Location (5)iii 4 z/ r/.4j S f /(o6' /7 1t/.aere( G;ledTrtc/rr, wearejsSts C a 9/" Lw cek4 I1,t ' 'fee,(r,n,fi'1 raetCorlruns -^ow ,Merf,a'u i,«enCcnt~ X115Uncle anrepdeer e,Weftj~,/CGend o •Fa LaF' /E. . /: l Zr 1 #/7/a--d 11-iceare eo oc~ .,caW( eA#013/ 1 &Z/7Sr / 7G4'ta 8 • ;ht7. . d-wos f'l"i ~)3 # (0ru~•e,o:ruw~swslatf~rea .Zcoor,Con ictMineet .e1•of So ;[Contaw. ;n .tcournCon waost A- +eurtl,i an e,-hvs / Cor .os,aK/snPuh. n0.~ionCc rros .ewrf• v,i'Conf&w,/ tre+,Gon ~v . rns , eh ala a rdC Arah Qh h( Oh7A~'r;nG !0a49#3/. i 1YC reoAea!'SIZard- pJ,tha Y r/, ti!~J e- 6'h tF ft7CConr~--ASH/A/sPaTSsf6 t_nazo.e o e ,#SaReiahPC8dan9 Cr~arrlf,',h iiid a ers / 8 dah9er-vcrr ;ue~s5ycon men ~1`ed`want rrtC f,Rne(~181~ l ~/3 ~ to~~&r-,L1 ichm.lCo ." nr)nafienSoaL.Castt ns rrt,t„ fvrG `kuui, wCAhS r, .e/!ratrvlVy jl .4(oa w: ..a1 `Ga4or no.. rr LifC.J.c"fr0'1R0.ck~arYe~randrva y, oily,2.,e/ / x -/1/1~`, ~aAt796,;, e. {; I ##8~°&fenaaw Said- a GA,% /an0tyfNCRImpact of Debris Future Land Use (7) Is Debris Hazardous ? (8)(6)Rustn;., afranass: cLv ' n oca rodSc oo rrhauSln ~OCa~ /ahew d 5a rheal.S- Serf yPQh'l. ~AZar~,eO a.4.rebO CraeSkfe ~ll uvs /s~- c"9/tew+Iove/fh/G isJya re,..ree ,+r tc ,ti1JR1ti,t,,jr WaO~kerlrovrifVt*-¢Son}c ih~flu :/off%n t La7~ovsi/~ if, If 0SCh i ie rka-Le,he li-Aa~vlr~kec.(1-L/1A't.Arafrj ec, ~1~1i~fZR~Fea,/147aec.~Th AZgr~fleas/ el SA ty/lea/ `ld Zarr,e .o &V.C.y,arar%f^jhu~ n A1ea AQ h eal! ,4az~greeC ihuZar{hek(ftiJdSummary of Sites Identified for Investigation /Clean up at Gambell , AlaskaName of PersonSurveyedDate ofSurvey1WOO D VtrAdnrI/K~u~IIDnUn -i14Krothe' hih a oUYo ~lMrh •hKkSook~cEMPTY 8,RREIS ~`rrns$oda*'dee r Cans_iq at . oo '/ / #/lea.2SSTQn Ooi..a a FA(sf! 1-- e-17tact-o f. 4';u n/iw f F / 1r.-ofAMMO5aCaruiw, Cabie.)o nceS oh 00San ooan o0wirt Tun-~n,ns, s-etn,Qt,~o a~, inSula¢ion~s Sbes~t~~ ~~aAn an,e r0%t1~,~ ;bHan r.A a~11 i P/d~t l~MOs /JQ/t /GM~OCS00„ aon ao?ah o'I ~An 00M 4+-WewSe /c rs~r ur,o j or nwnTan OMrlrfe•ry Lard it sd- r1#/YIN yi / /fn-cc/g,i /#~rea 18 -> / / rek/7/#02hofS~h~~rFia/~~rwsold 11il.f °~`/ti ah¢eesf a eIto,rcG/a%t i l,rrkoustain z1r~/f(TAM,AR/~rev y~, / rC,e /~4/ #8rt0. 1B~eraeast rV.ov :esl3& e. eFun ,n71-1 o7F A(04io„Se/ C ; LQhas, o%! 'ieas~Con nr a tiaraCorruS ro%'reA to d- /7~,yro„nCon yConCe .~rrnio,nc .4 r e-&,Zt,'uruMovi ;lefta '. fne"o.,oat doc-KConfifM%nal(40 ,f r U^a. iXPLe•ew/es acanters relyon ~, nR onypw ~ro~,f aza~u re.evS , nyoac /eF4 rcousr~~obsfae/e~6l fe/[b.ra)M/AOhazardSetru; hK% n of1anceR M. (^ elaSa..o oarae a /~~i/iQZarSa{tfA~iee^ Sp/c /Nf ro< soft7Y X-Z/_hra~f~ f~~,re ffa~sih~k'I/rr vlihgC ,v, unaco ., ~,%nR¢%.nof a.,aF~ /~ vs/! ^/Ira/u y has inra,dank,2 Zk a^Oily) Cthc t-an§pytus , ^ s7~~cbwroan.LofFµg2~ 11n rend eSi /#1 eaeLi le w~sr wlh 5 . oohAraCtdr6LtrVc i "r 1, ; Arc ~h dffa?Jrru5Con a,n,na/hea,n,c / oh Hey/:.+ lcrail('On#S//ie--~Qi err7Q~srCOn ars,nafionr7Qh dd/ 4QdU eSever esImpact of Debris Future Land Use (7) Is Debris Hazardous ? (8)(6)tee-Wu-0. ~~OYE' ra r0d.Cranes, Weasels,rvarfh Bta c~ranX1-1Ii K~aonlainNU13 Frames111 Jan 00~,Aar West- CRC! Arractbrs, cranes~"Site Location (5)C -111dJah oUao o H ernonl~nin a ~vd S teveh,KoonMap Location ( 5)Or nonceTah oo' Jan 00 'Tan @SDescription ofDebris (3)24in •7//Seo/rricoo ~seh~ia/~e or~asPhoneNumbera-ear' Se od, l erberry~ K: » e4"TV'If :M sraheus~ nAre a2^JCrr1u/e 4ous,n.~~7rfe.rt/iovs.H,r WO ,nrrus p;c~~~/rear9 ,'errtir,,e'/_SQ L/WAY -1Z t,Sal e'qhea. !4e1~/Y1Sa t/Sti>~~ l ;a'zar .),(/ f. ,,a e c/st aza~_ Po v/,RZA~ea /t azare /5"r YtoA2wrsc1c ~. ~heca~~ 11u1a~~Q1 4e41114AZat~Summary of Sites Identified for Investigation /Clean up at Gambell , AlaskaName of PersonSurveyedDate ofSurveyoanati 3o/sn7.Tth oog"CU rah J'rDOonoodn0OAO6OnOO_dar7Tan d O %Gerr6t~ d0iem? Jan aoZe as1a~K ita ian 0aLfWIS ~i' 27TQA 00Oazeva,4/e~+c7i'OD7Ta* QO7Ta+ 067 n 050~1~1harre llfUh00gan 00 '~ooS}) C(infon$?ai aoh$Sa„ 00h/drrrAA(-OhPhoneNumberDescription ofDebris (3)old ~ a $ e s'din /1, oo '~rLOO5C rov.$ o(k AOae orangVAS rant oMkftracfasS wa' sCranes raci»/s,t4 arurrwit xnwti t leFS ee sa ihgo rni a onoca lerirac r1, toes,ant M ~~/N/~/runts~Me ecW Itrant rmerr,W112ectt9 ..Land Picrane, /.~asterTo FoiXSrt 7rta T fd-/S9:ssf I '/. ~. /AtYra/a otcaP// 4rta1B( / o'~ ;/~laZe-S ~-' /# A d SPo . aM elavnta~hi/e eeA S !least- e! /finunder It CWeenonfZ.e4- 17 r llsFi a- /Ad /,('ancele ('duOn d a krr A'e e fa..fereCnminghu5 e~sniZa ee enear 'JAJr4 !~6C.fa f`'~~aivdRe e ore.//01C/t' aCont~M~n~i o2Con 1u~.na rohur.swrecr ~c ~X ro~:~%I inS ~0°4 a»jrZdAr°c 'ItC/taw1. rat.n ~ STA0Sr7F 7a//A '!b4e~ 1r/ _~l ~__I/'a/f/7 srla Z arJeaAnp iS_ 55Sy~e~ s ta . p"heta ~lyi _aJree~r icC.~yeR ~~~~Gird _ etiiwR 7y'/1 ru/~/tepF%SHrNYse~ rCgAlC/eon 9jayt~TV frai Ir!//r , ,'rth4r iNrqo s c e.17w9rov~5C/iee~ SI(rcc.v l~/h9S ,okr / we/esfe,Q jayoneOble r,'8reLa /B YL'aj3aeretlf,. .Y Sn W5 to t8rvsCon ranafidrl/re/ # ZZj/ecre.t e~Cer, reaf%c~Fi 1 ftreaorruff4 r..al != /#/e-2rra T Cr nefs YHers3hiec-~ .; ~rabl e rt6a.•.belkG1.od! a-i / ` Zon.# lFi lImpact of Debris Future Land Use (7) Is Debris Hazardous ? (8)(6)O#%,/ /Jrra1finwo F~,4,er,~ of L .Juri a ac rSite Location (5)aar~ai< COa~/enea/ RYrd 1~ nearf}rta (~5eew ,M7e5ifs.ce .~ .., er ,en Nes Ne. Fi #18d te 't rrugs ZIP ofDe1-6/040-Map Location (5)TSa,Are,,rya; $;rJreC tan 9raChar SekeaFis~'~OVItsnIA &rrCq/rh ea //Xh/ea ldIx07 ard- SaR zarld(~tid~jrJ/1PR/jr dt lL/ieQ/7`n d haCanc___ ___~1CQ~1~~~~oss~ DSea)7Qn Cer Q Zaazatga azorctf p.0d~'fea/eConfltacalUN /% A4;1fra i fGZ aSa~ ~o ,%azaraZA aSummary of Sites Identified for Investigation /Clean up at Gambell , AlaskaName of PersonSurveyedKAfi i Tenn0.Date ofSurveyanjQ 003OO2cV 44ev LA&Uwh t9 0oDescription ofDebris (3)'. kW4 he iFi0c/1 rL 0 r~~/7e4/ 4ZQraza/dSummary of Sites Identified for Investigation /Clean up at Gambell , AlaskaPhoneNumberDescription of Map Location (5)Debris (3)t~aG r/Cralt2,__/N/A(ao+trrv aZ i /tiUa, c e fdebris m AltIM fief wFra4A~~It`/5 e /+ewnei14d Ca,e cn .sefe'h'/eltt~e! 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W S4.aZarsQ~~i-Aye A`a reSea // a zexc6ijeQl QZCtrrle ac'02;e ll ane7o~}T cK) r.C/ern, arr+afionSt.,SSi e gC/~rh lda vinReS /° t i . 1 s9c taM sea eruesAWAY 1%eq" "'nttm•Un CrNC eah ea/~nsaenann enCon7u(Sewarash ek /lS; 7~- SSA WWiteaTf vt.+ .cn Tiau9ro .~nA MononovnfalnSl~/~ 2,o ; I V7S a°F,l4ZWIRE SPOOLSJdPvnp(t°vft~10i7~- l3W=0,0.4"f i1,11A st u.ieaI7u 1 f n j e2$arr~ 1 r.21WrielCImpact of Debris Future Land Use (7) Is Debris Hazardous ? (8)(6)wms ,atac~+`""'Q oks e~i',a J"frir :a /7Wease t/~l1{ I Ieas ooN,i/ ~etf64ISite Location (5)h eaSlazal(AZ1Rr~lIZGI/Q fe4~2ar`I _a_4- Q~'4 ~~ -S y I~~~'/~~Summary of Sites Identified for Investigation /Clean up at Gambell , AlaskaPhoneNumberI Description of I Map Location (5) I Site Location (5) I Impact of Debris ( Future Land Use (7) Is Debris Hazardous ? (8)Debris(3)(6)Lefto ver~hk-gadQisI QSZ3-1,ZoArea 1Area (aS8o! Cal eurVn t 'ofS%J#Ace,UPd ownoUnderOJSc eo caie0.~1e0.7Asstl.oa(ah 9.r.rZC(fco. S'/fretG~rco . II Gtit¢,o.Zfi4o2-soh!,_50-cal baadi(eerfD Sa arl"Lrov~-alaf91d_ Iratrptr marlLa (C2_/GAC/Can a^NSron3rd Wi9TCHEW ' Beauceeon CMVrmnrrtncbs ¢aclcrusty ea'oaa'douCiaZur11 WAY$nV~rana; 5 jror. c 4~.rH'5i7`e71 clean sarr5 ~?v__(641Mina7!f (rah .W4I-aea/fA ~Saaeal54~Sa Za/5a)q--.fy AQ ?-aAn?lvg, 5,aatO~SR{tlw Rata/e 4/IA 'L 5ea/T,vcr+sa recrea~ianFQ11 MM in I re CrC io6stac%tea /¢/, d- Sa-f 1S~r74?`y Aa 2aQZ 00'/cFaVe(CrJ' ld;iiexp/os' o~ risa' j -SSibr0Con a rw~Srta ((r reaa'N f/AME Slim ric .reap2%.VIR.o Z¢ra~73osr M4j Oo .H• r aM e/ Cra0 Yatrre/s d•Crafe5u55 :*a rcr^ 1 8tin c fartica`lS'; /-c ZNQ e-r¢wr .na ~ a0e/laz,aa/d V, I/aye_50 v i-A o ftifcssyLanz6U/ ovErX 641dC;ae--l' P~' 1~'(uv~LfGtah ~O ooW:esal~)Dear C n0lt4A,Qtea- (aerafar fSNSpSb4ton a m'na aah;~ecreaf ; oNI c +8v, 4 i erW-aZarrJek lf~ atd Sa{~1Q Z.4/_junSa un +ea1SOto /,7to/ tSa,Za/rQ;42QOkQ zardSummary of Sites Identified for Investigation /Clean up at Gambell, AlaskaName of PersonSurveyedDate ofSurveyCO(oATJKI I~IotDEit~_PhoneNumberDescription ofDebris (3)!c S oefi ' 4&Mo1o~ POMap Location (5)r.edoily Sw+t, $oiln coRolf~ k;to eea ~oc eMcnsc{we( Sfe Fib zMph-~oa~ Z,hiSite Location ( 5)an!oMO Y MooLG 7~ /(off (Impact of Debris Future Land Use (7) Is Debris Hazardous ? (8)(6)O,yOvererw ..wmSh toncRo~lyl0"- i+es lea[oa ina.w sVi a eY rtiSee G eQn, ealt14ea.'1~il1ZarOl~ ,zaZGrdNATIVE VILLAGE OF GAMBELLP .O . Box 90 Gambell, Alaska 99742(907) 985-5346 FAX (907) 985-5014The Native Village of Gambell (IRA) entered into an agreement with the Department of Defense (DOD) to prepare aStrategic Project Implementation Plan (SPIP) . This plan will form the basis for further discussions between thecommunity and DOD concerning remediation of remaining military debris in Gambell .The SPIP will identify military impacts, how these affect land use, the desired remediation, the estimated costs of theremediation actions, and a priority list for identified remediation .The completion of the SPIP will be a tool to express tribal members' ideas and concerns to DOD . It does not guaranteethat any money will be available to perform any removal action in Gambell .You are being asked today to contribute your knowledge of locations of any remaining military debris within Gambelland to discuss how military impacts affect land use .Name :Address : P.O .Phone : (907) 985BoxGambell,AK99742Would you like to be added to an information mailing list? Yes No1 . Do you have any concerns about remaining military debris in Gambell? Yes No (Thank you for your time)2 . What is your knowledge of any remaining military debris in Gambell? (Saw it being buried, have seen parts on thesurface, heard about it from someone who saw it)Surface(S)Buried3 . What kind of debris is it?1.(S) (B)(S) (B)3.(S) (B)FinalRev .1 12/23/99(B)4. Where is the debris located ? Please use the maps to mark the location .1.2.3.5 . What is the impact of this debris to you or the community?6 . Many buried sites were identified in 1994, please use the provided map and look over these sites .Add these sites to your list, which of these sites do you think should be removed :First?Next?8 . How is this debris hazardous or impact the following :FirstSiteNextSitea . Environmenta.Environmentb.Wildlifeb . Wildlifec.Peoplec . People9 . Are you willing to help locate the debris you have discussed, without cost to the IRA Counsel or DOD?Yes No10 . Remarks :Thank you for your time and information .If you have any additional information to provide or questions regarding this program, please contact :Native Village Of GambellMichael Apatiki , Project Manager985-5474WESTBEACHLEGEND10RUNWAYGEOPHYSICAL ANOMALY--- LIMIT OF GEOPHYSICAL STUDIES (1994)15SCALE IN FEET1000BERINGSEA0200 .00000000000000000O00 0 0 0 0000 °00. 00 0 ° 00 CITY0 000: 000..A---- .OLD GAMBELL-'1---------------0 OLD VILLAGE WELLSUSPECTED ORDNANCEBURIAL SITE0DSEE FIGURE 2FOR THIS AREA200VILLAGE OF GAMBELL0 00000000°TROUTMAN LAKE20 __UNICIPAL BUILDING -0 00000 0000WATER TREATMENTARMY LANDFILLI-1LANDFILL N0 .1-HIGH SCHOOLIIT2p ppOppp I rIFORMER MAIN CAMPIF1994 SUMMER LAKE•_---BOUNDARY1UNNAMEDPONDpppppp~ 0r6_LIsoul H AREA2A 1A-'r1I0LANDFILL NO.2BURIAL AREABURIAL AREANORTH AREANo"1-ARMILANDAREAI1L,fA1171.- --__-NAYVAGHAOLAKE~ .0NORTHBEACH00000BURIED FORMERTRAM ANCHORsFORMERINFILTRATION GALLERY/NOT CURRENTLY .USED)100BERINGSEANEW VILLAGEWATER SUPPLYSUSPE FED ORD 'ANCEBURIAL SITEFORMER MILITARY HOUSING'OPERATII NS BURIAL SITE"-,Cl A FOUiEPr.LANDING AREAAREA 4D000BAREA.1AIR FORCEER COMMUNICATIONSLITY BURIAL AREA1CABLE00100ARMYTRAIL106/SAREA 4BFORMER AIR FORCE .RADAR SITEN00NW0zMONTGOMERY WATSONAnchorage, AlaskaFIGURE 1U .S . ARMY ENGINEER DISTRICT, ALASKAGAMBELL, ST . LAWRENCE ISLAND, ALASKAPREVIOUS GEOPHYSICAL INVESTIGATIONAND ANOMALIESLi0LEGEND• GEOPHYSICAL ANOMALYr-]a o 08 a°----- LIMIT OF GEOPHYSICAL UDIESE1994#jMUNICIPAL BUILDINGWATER TREATMENTHIGH SCHOOL-,0 16I-L"EDFORMER MAIN CAMP------------0FORMER CABLE \\BURIAL AREA -ARMYLANDINGAREABERING SEABURIED FORMERTRAM ANCHORNEW VILLAGEWATER SUPPLYRDNANCEFORMER MIUTAJOPERATIONS BUAREA 1BAREA4D'IFORMFACILIFIGURE 2U .S . ARMY ENGINEER DISTRICT, ALASKAGAMBELL, ST . LAWRENCE ISLAND, ALASKAPREVIOUS . GEOPHYSICAL INVESTIGATIONAND ANOMALIES00 0000000000 000 00 0 00 00 00000000DDFIGURE 3MONTGOMERY WATSONAnchorage, AlaskaNATIVE VILLAGE OF GAMBELL, ALASKA (IRA)INTERVIEW HOUSINGLOCATION CHECK MAPAPPENDIX BGeophysical Report - July 2000MONTGOMERY WATSONGolder Associates Inc .1750 Abbott Road, Suite 200Anchorage, AK USA 99507-3443Telephone (907) 344-6001nFax (907) 344-601 1GoldenAssociatesREPORTGEOPHYSICAL SURVEY INVESTIGATIONNATIVE AMERICAN LANDSENVIRONMENTAL MITIGATION PROGRAMGEOPHYSICAL AND COOPERATIVEAGREEMENT SUPPORTGAMBELL, ST. LAWRENCE ISLAND, ALASKAPrepared for:Montgomery Watson4100 Spenard RoadAnchorage, Alaska 99517Prepared by :Golder Associates Inc .Anchorage, AlaskaAugust 25, 2000Distribution: Montgomery Watson - 3 copiesD,/F: C:\00-3q\jobs\003-5435\Gambell Geo Survey Report.docOFFICES IN AUSTRALIA, CANADA, GERMANY, HUNGARY, ITALY, SWEDEN, UNITED KINGDOM, UNITED STATESGolder Associates Inc .1750 Abbott Road, Suite 200Anchorage, AK USA 99507-3443Telephone (907) 344-6001Fax (907) 344-6011UFGolderAs sociatesAugust 25, 2000003-5435Montgomery Watson4100 Spenard RoadAnchorage, Alaska 99517-2901Attention : Bonnie McLean, Project ManagerRE: REPORT FOR GEOPHYSICAL SURVEY INVESTIGATIONGAMBELL, ALASKADear Bonnie :Please find attached three copies of our report for the Geophysical Survey Investigation atGambell, Alaska . This investigation was conducted for the Native American LandsEnvironmental Mitigation Program .Thank you very much for the opportunity to assist you with this interesting project . Pleasecall me if you have any questions or require additional information .Sincerely,GOLDER ASSOCIATES INC .Robert G. Dugan, C .P.G.Associate and Senior Engineering GeologistRGD/ljhD/F : C:\00-3q\jobs\003-5435\GamRptCvrltrl .docOFFICES IN AUSTRALIA, CANADA, GERMANY, HUNGARY, ITALY, SWEDEN, UNITED KINGDOM, UNITED STATESAugust2000-i-003-5435TABLE OF CONTENTS1 . INTRODUCTION . . . . . ... . . . . . .. . . . . . . .. . . . .. . . . . .. . . . .. . . . . .. . . . . .. . . . . .. . . . . . . . .. . . . . . . .. . . . . . .. . . . . ... . . . . . .. . . . . .. . . . . . . .. . . . .. . . . . . .12 . SURVEY AND INTERPRETATION TECHNIQUES . . . . . .. . . . . . . . .. . . . . .. . . . . . . .. . . . . . .. . . . . .. . . . . . . .. . . . . .. . . . . .22.1 Introduction . . . ... . . . . ... . . . . . . .. . . . . . .. . . . .. . . . . .. . . . .. . . . . . .. . . . .. . . . . ... . . . . . ... . . . . . . . .. . . . . . .. . . . . . .. . . . . . .. . . . . ... . . . . . .. . . . .. . . . . . . 22 .1 .1 The Survey Grid . . . ... . . . . . . .. . . .. . . . . .. . . . ... . . . . .. . . . . .. . . . . .. . . . . . ... . . . . . . . .. . . . . .. . . . . ... . . . . ... . . . . . .. . . . . . . .. . . . .. . . . . ..22.1.2 Field Hardcopy and Presentation . . .... . . . ... . . . . ... . . . . . ... . . . . . . . . . . . . . . .. . . . . . .. . . . . . . . . . . . . .. . . . . .. . . . . . . . . . . ..22.2 Ground Conductivity Surveys . . . . .. . . . . . . .. . . . .. . . . . . . . . . . .. . . . . . .... . . . . . . . . . . . . . .. . . . . .. . . . . . .. .. . . . . .. . . . . .. . . . . . .. . . . . ..22.2.1 Equipment and Software ... . . . .. . . . . .. . . . ... . . . .. . . . . .. . . . . . ..... . . . . . .. . . . . . . .. . . . . .. . . . . . .. . . . . .. . .. . . . .. . . . . . .. . . ... .22.2.2 Principles .. . . . . ... . . . . . .. . . . . . . .. . . .. . . . . . .. . . . ... . . . .. . . . . .. . . . . .. . . . . . ... . . . . . . . .. . . . . . . .. . . .... . . . . .. . . . . . .. . . . . . . .. . . . . ... . . .. . . 32.2.3 Data Acquisition . ... . . . . . ... . . .. . . . . . .. . . . . . .. .. .. . . . . .. . . . . .. . . . . ..... . . . . ... . . . . . .... . . .... . . . . .. . . . . . .. . . . . .... . . . . .. . . . .. . . 32.2 .4 Interpretation of Electromagnetic Induction Data . . ... . . . . . ... . . . .... . . . ... . . . .... . . . . ... . . . . ... . . . .. . . 42.3 Magnetometry Surveys . . . . ... . . . .. . . . .. . . . . .. . . .... . . . ... . . . . ... . . . ..... . . . . . .. . . . . . . .. . . . . ... . . . . .. . . . . .... . . . . .. . . . . . .. . . . . .. . . 42.3.1 Equipment and Software .. . . .. . . . . .. . . . ... . . . .. . . . . .. . .. . .... . . . . . . . .. . . . . . . .. . . . . .. . . . . . .. . . . . .. . . . . . . .. . . . . . .. . . . .. .. .42.3.2 Principles .. . .... . . . .. . . . . . . ... . . . . .. . . . . .. . . . .. . . . . ... . . . .. . . . . .. . . . . .... . . . . . . .. . . . . . . ... . . . .. .. . . . . .. . . . . .. . . . . . .. . . . . . . .. . . . . .. . . 42.3.3 Data Acquisition . . . . . ... . . . . .. . . . . .. . . . .. . . . . .. . . . . . .. . . . ... . . . . ... . . . . . . . ... . . . . .. . . . . . .. . . . . . . .. . . . ... . . . . . ... . . . . . .. . . . .. . . . 52.3.4 Interpretation of Magnetic Data . . . .. . . . . ... . . . . .. . . . . . .. . . . . . . .. . . . . . . .. . . . . . .. . . . . .. .. . . . ... . . . . .. . . . . . .. . . . . ... . . . 53 . SURVEYS AROUND THE VILLAGE OF GAMBELL . . . . . . .. . . . . . . .. . . . . .. . . . . . .. . . . . .. . . . . . ... . . . . . .. . . . . .. . . . .63 .1 Introduction .. . . . .. . . . . .. . . . . . ... . . . . . .. . . . . .. . . .. . . . . . .. .. . . . .. . . . .. . . . . ... . . . . . . . ... . . . . ... . . . . .. . . . . . .. . . . . . .. . . . . .... . . . . . .. . . . . .. . . . . 63.2 Site G : Army Landfill . . ... . . . . .. . . . . .. . . . .. . . . . .. . . . . . .. . . . ... . . . . .. . . . . . . . .. . . . . . . .... . . ... . . . . . .. . . : . . .. . . . . .. . . . . . . . .. . . ... . . . . . 63.3 Site H : North of New Housing Development . . . . .. . . . . . . .... . . . . . .. . .. . ... . . . . .. .. . . .... . . . . .. . . . . . .. . . . . .. . . . . .. 73 .4 Site 1 1 : East of School ... . . . . . ... . . . .. . . . . .. . . . ... . . . . . .. . . . .. . . . . . .. . . . . . . . .. . . . . . ... . . . . .. . . . . ... . . . . .. . .. . . ... . . . . . .. . . . . .. . . . . .. 83.5 Site 1 2: School Playground West of School .... . . . . ... . . . . . . . .. . . . .. . . .. . . . .. . . . . . .. . . . . .. . . . . .... . . . . . .. . . . . .. . . . . ..93 .6 Site J : South of City Building, Along North Shore of Troutman Lake .. . . . . .. . . . . . . . . . . . . . .. . . . .103 .7 Site K : Snow Fence Area ... . . . . . .. . . . .. . . . . .. . . . . ... . . . . .. . . . . .. . . . . . . . ... . . . . . ... . . . . ... . . . . .. . . . . . .. . . . . .. . . . . . . . .. . . . . .. . . . .103 .8 Site L : By Q Building .. . . . . ... . . . .. . . . . .. . . . ... . . . . . .. . . . . .. . . . . .. . . . . . . ... . . . . . . .. . . . . .... . . . ... . . . . .. . . . . ... . . . . . .. . . . . . . . . . . . .113 .9 Site M: North of Snow Fence . . . . .. . . . . .. . . . . .... . . . ... . . . . .. . . . . . ... . . . . . . . .. . . . . .... . . . .. .. . . ... . . . .... . . . . . .. .. . . ... . . . ..12List of Figure s.Figure 1 - Vicinity Map and Location of the Survey SitesFigure 2 - Magnetometry survey, Site G (Total field, nT)Figure 3 - Magnetometry survey, Site G (Vertical gradient, nT/ft)Figure 4 - EM-61 survey, Site G (Top Channel, Bottom Channel, mV)Figure 5 - EM-61 survey, Site G (Differential Channel, mV)Figure 6 - Magnetometry survey, Site H (Total field, nT)Figure 7 - Magnetometry survey, Site H (Vertical gradient, nT/ft)Figure 8 - EM-61 survey, Site H (Top Channel, Bottom Channel, mV)Figure 9 - EM-61 survey, Site H (Differential Channel, mV)Figure 10 - Magnetometry survey, Site I 1 (Total field, nT)Figure 11 - Magnetometry survey, Site I 1 (Vertical gradient, nT/ft)Figure 12 - EM-61 survey, Site I 1 (Top Channel, Bottom Channel, mV)Golder AssociatesAugust2000-ii-003-5435TABLE OF CONTENTS (continued)List of Figures (continued)Figure 13 - EM-61 survey, Site I 1 (Differential Channel, mV)Figure 14 - Magnetometry survey, Site 12 (Total field, nT)Figure 15 - Magnetometry survey, Site 1 2 (Vertical gradient, nT/ft)Figure 16 - EM-61 survey, Site 12 (Top Channel, Bottom Channel, mV)Figure 17 - EM-61 survey, Site 12 (Differential Channel, mV)Figure 18 - Magnetometry survey, Site J (Total field, nT)Figure 19 - Magnetometry survey, Site J (Vertical gradient, nT/ft)Figure 20 - EM-61 survey, Site J (Top Channel, Bottom Channel, mV)Figure 21 - EM-61 survey, Site J (Differential Channel, mV)Figure 22 - Magnetometry survey, Site K (Total field, nT)Figure 23 - Magnetometry survey, Site K (Vertical gradient, nT/ ft)Figure 24 - EM-61 survey, Site K (Top Channel, Bottom Channel, mV)Figure 25 - EM-61 survey, Site K (Differential Channel, mV)Figure 26 - Magnetometry survey, Site L (Total field, nT)Figure 27 - Magnetometry survey, Site L (Vertical gradient, nT/ft)Figure 28 - EM-61 survey, Site L (Top Channel, Bottom Channel, mV)Figure 29 - EM-61 survey, Site L (Differential Channel, mV)Figure 30 - Magnetometry survey, Site M (Total field, nT)Figure 31 - Magnetometry survey, Site M (Vertical gradient, nT/ft)Figure 32 - EM-61 survey, Site M (Top Channel, Bottom Channel, mV)Figure 33 - EM-61 survey, Site M (Differential Channel, mV)Golder AssociatesAugust2000-1-003-54351 . INTRODUCTIONGolder Associates Inc . (GAI) was requested by Montgomery Watson Alaska, to conduct ageophysical survey at Gambell, a village located on St. Lawrence Island off the west coast ofAlaska (Figure 1 ) . The geophysical investigation forms part of a larger survey undertakenby Montgomery Watson for the Native American Lands Environmental MitigationProgram administered by the U .S. Army Corps of Engineers . The project was carried outunder a subcontract agreement with Montgomery Watson .The purpose of the geophysical investigation was to delineate suspected buried metallicdebris resultingfrom military activity . The investigationused atime-domainelectromagnetic metal detector (Geonics EM- 61) and -a magnetometer .The location of the project area, in the vicinity of Gambell , is shown in Figure 1 , along withthe approximate locations of the individual survey sites .In this report the grids arediscussed in terms of their local coordinates because the surveyed coordinates were notavailable at the time of writing . The true spatial position of the grids can be found inMontgomery Watson 's report to the U .S . Army Corps of Engineers .The survey was conducted by Golder Associates between June 24th, 2000 and July 2nd, 2000using a Geonics Model EM-61 metal detector and data logger, and a Geometrics Model 858vertical gradiometer .Montgomery Watson personnel laid out the corners of the surveysites .This document describes , on a site-by -site basis, the geophysical techniques , the methods ofacquisition, the processing techniques and the results of the survey .Golder AssociatesAugust2000-2-003-54352 . SURVEY AND INTERPRETATION TECHNIQUES2.1 IntroductionAt each site, both geophysical survey techniques were used to describe the nature of thesubsurface materials and to locate the boundaries of structures . These two techniques weretime-domain electromagnetic induction and magnetometry .2.1.1 The Survey GridThe control grid at each site was set out by Montgomery Watson who placed labelledwooden stakes at each corner of the survey region . The grid lines were positioned so thatthe Y - axis was oriented approximately north to south and OE, ON was located at the southwest corner of the grid . The local magnetic declination was approximately 13° east of truenorth . At each site, data were collected along survey lines spaced 10 ft apart. Along eachsurvey line, readings were recorded continuously and the data marked at 25-ft intervals .During the surveys , a sketch map was made of the surface features such as metal debris orbuildings.2.1 .2 Field Hardcopy and PresentationA full- color field map of the gridded data was prepared following each survey . The mapwas produced using the Surfer contouring package, Version 7 .0 . Unless otherwise stated,the plot for each type of dataset was contoured using the same linear contouring interval .2 .2 Ground Conductivity Surveys2.2.1 Equipment and SoftwareThe presence of near surface electrically conductivity material was measured with theGeonics EM-61 time-domain electromagnetic metal detector . The response for both the topGolder AssociatesAugust2000-3-003-5435and bottom coil were recorded digitally on a Geonic data logger . The logger also recordedthe acquisition direction (north, east etc .), station spacing and line number . After thesurvey, all the data were downloaded to a portable computer using the Geonics program,DAT61W.EXE. Following a limited amount of data reduction , the data were output to anew file, which contained values of easting, northing , top coil response and bottom coilresponse for each measurement station . This file was transferred to the Surfer contouringpackage for presentation and analysis .2.2.2 PrinciplesElectromagnetic methods are based on the measurement of magnetic fields associated withalternating currents induced in subsurface conductors by primary magnetic fields . The EM6lcreates a pulsed primary magnetic field through a transmitter coil . The generation of thisprimary field then induces circular eddy current loops in conductive material in the earth .When the primary magnetic field is removed , the eddy current loops in the ground decay,which generates a magnetic field . The decay of this secondary magnetic field is recorded bymeasuring the induced voltage in two coils at the surface .The measured voltage isproportional to the speed of the decay of the magnetic field, which is proportional to theconductivity of the surface and subsurface material .2 .2 .3 Data AcquisitionThe EM -61 continuously transmits electromagnetic pulses and samples the associateddecaying magnetic field at 0 .25 second intervals . The decay curve is sampled at two pointsby two coils (top and bottom channels located at 36 in . and 18 in. above the ground surfacerespectively) . These coils are positioned so as to function as a spatial filter when the coilresponses are subtracted from each other . This processing helps to separate the effect ofsurface debris from that of buried debris .Data were recorded continuously along eachsurvey line and marked at 25-ft intervals . The position of the data between these markedlocations was interpolated assuming a constant surveying velocity .Golder AssociatesAugust2000-4-003-54352.2 .4 Interpretation of Electromagnetic Induction DataInterpretation of the EM data involves analysing the color contour plots for anomalies .Anomalies are defined as measurements that are above or below background values thatare not related to natural conditions or visible surface features .2 .3 Magnetometry Surveys2.3.1 Equipment and SoftwareThe total magnetic field and the vertical gradient were measured with the GeometricsModel 858 optically pumped cesium magnetometer/gradiometer . The equipment alsorecords the easting and northing of the measurement station in local grid coordinates . Afterthe survey the data are downloaded to a portable computer using the programMagMap2000 . After limited data reduction and checking, a file is sent, to the Surfercontouring package for presentation and analysis .2.3.2 PrinciplesThe cesium magnetometer measures the Earth's natural magnetic field and detectsvariations in this field caused by ferrous materials .Two types of measurements are recorded during a gradiometer survey: total field andvertical gradient . Strength or intensity of magnetic fields is measured in nanoteslas, where1 nT = 1 gamma (cgs unit) . The Earth's field is approximately 50,000 nT . The total fieldmeasurement is affected by regional changes in the magnetic field and anomalies caused byburied ferrous material . The vertical gradient data are primarily affected by near-surfacesources and provide better resolution of shallow buried objects . Vertical gradient data arenot affected by regional or diurnal variations in the magnetic field .Golder AssociatesAugust2000-5-003-54352 .3 .3 Data AcquisitionDuring the survey, the axes of each sensor were horizontal and oriented east-west . The twosensors were separated by 24 inches . Base station readings were recorded at the start andend of each site survey. No significant changes in the base station magnetic data wereobserved during the surveys, so no corrections were made for changes in the diurnal field .Measurement of vertical gradients, which are not affected by diurnal fluctuations, and totalfield measurements collected over a short period of time are sufficient for detecting anddelineating the extent of ferrous metallic objects .2.3.4 Interpretation of Magnetic DataThe shape of the distortion to the Earth's magnetic field caused by a ferrous object dependson the orientation of the object with respect to the magnetic field . Often, a characteristicsignature for magnetic anomalies caused by a ferromagnetic object is a "cross-over"anomaly . With this type of anomaly, magnetic measurements increase above background;decrease to zero or a negative value, and increase again to background values . In thenorthern hemisphere, the positive values are usually to the south of the object, the negativevalues to the north, and the zero crossing at the center of the object In areas with largeconcentrations of buried metal, such as a trench, the area behaves as a single largeferromagnetic object, with negative values near the northern edge of the buried material .The magnitude of the anomaly is dependent on the size, orientation, depth of burial, andmagnetic properties of the buried material .Golder AssociatesAugust2000-6-003-54353 . SURVEYS AROUND THE VILLAGE OF GAMBELL3 .1 IntroductionThe village of Gambell is located on the northwestern end of St . Lawrence . Gambell lies ona flat sand and gravel spit created by accreting beach ridges overlying a wave-cut bedrockplatform . The spit is composed of unconsolidated , well-rounded gravels and coarse sand ofQuaternary age derived from granitic rock .Maximum elevation is approximately 20 ftabove sea level . Most of the geology around Gambell is typified by Cretaceous graniterock. Sevuokuk Mountain is an eroded headland immediately east of Gambell that risesabruptly to a maximum elevation of 619 ft .The site has been used in the past by the United States Army, Air Force and Navy withmost impact occurring in the 1950s .3.2 Site G : Army LandfillThis site, located on the north-west shore of Nayvaghaq Lake ( Figure 1) is a suspectedformer army landfill. The area of investigation was 300 ft square and was surveyed on linesspaced at 10 it, oriented east -west. A Montgomery Watson monitoring well was locatedjust east of the survey region . The surface material was loose gravel with some patches ofvegetation.The results of the geophysical grid surveys are presented in the following figures :Figure 2 . Magnetometer Data (total magnetic field)Figure 3 . Vertical Gradient Data (vertical gradient)Figure 4 . EM Data (top and bottom channels)Figure 5 . EM Data (differential channel)There is a very slight variation in the total magnetic field across the site . The south-eastside of the site has a total field value that is approximately 200 nT higher than the south-Golder AssociatesAugust2000-7-003-5435west corner of the site . The contour interval for Figure 2 was reduced from 500 nT to 25 nTto illustrate this variation . There are two locations where the top sensor recordedanomalously low readings (40E, 90N and 200E, 30N) . These values are interpreted to beerroneous readings since similar readings were not recorded by the bottom sensor . Thevertical gradient magnetic data (Figure 3) indicates no variations across the site as observedin the data from the top, bottom, and differential channels of the EM-61 .The results of the magnetometer and TDEM surveys (Figures 4 and 5) indicate that there isno buried metallic debris in the shallow subsurface .3.3 Site H : North of New Housing DevelopmentSite H is a rectangular grid (600 ft x 150 ft with the long axis oriented east-west) locatedapproximately 175 ft north of the new housing development . The EM and magnetometerdata were collected along east-west survey lines spaced 10 ft apart. The ground conditionsat the site consisted entirely of coarse gravel . There was no metallic debris on the surface atthis site .The results of the geophysical grid surveys are shown in the following figures :Figure 6 . Magnetometer Data (total magnetic field)Figure 7. Magnetometer Data (vertical gradient)Figure 8 . EM Data (top and bottom channels)Figure 9 . EM Data (differential channel)The only region with anomalous magnetic data is located in the south-east corner of thegrid (Station 510E to 600E and ON to 80N) . This region is outlined in red in Figures 7 and 9 .The EM data also indicates that the south-east corner of the site contains conductivematerial . The anomalous region in the EM-61 differential dataset, however, is not as broadas that indicated by the magnetometry data and reveals several isolated anomalies . TwoEM anomalies, located at Stations 525E, 60N and 510E, 150N, are significantly reduced inthe differential channel . This suggests that these objects are buried immediately beneathGolder AssociatesAugust2000-8-003-5435the surface . The remainder of the region having magnetic anomalies , appears to beassociated with three buried objects located at Stations 545E, 30N ; 550E, ON; and 585E, ION .3.4 Site 1 1: East of SchoolThis site is located on the east side of the school immediately east of several above groundtanks . The survey area is 150 ft square and was surveyed along east-west lines spaced 10 ftapart . The surface material consisted primarily of gravel and contained no surface metal .The only noteworthy surface feature is a dirt mount located at Station OE, 60N .The results of the geophysical grid surveys are shown in the following figures :Figure 10. Magnetometer (total magnetic field)Figure 11 Magnetometer (vertical gradient)Figure 12. EM Data ( top and bottom channels)Figure 13. EM Data (differential channel)There is a notable variation in the total magnetic field on the southwestern side of the site(Figure 10 ) that does not appear in the vertical gradient data ( Figure 11) . This is possiblydue to metallic objects, such as the above ground tanks, immediately east of the surveyarea . The magnetic field gradient indicated an anomalous area centered on Station 15E,70N . This is the approximate location of a dirt mound .The EM data revealed several more anomalous areas .A linear anomaly oriented north-south in the EM data was identified on the eastern side of the site at Station 140E .Anomalies of this shape are characteristic of underground utilities . At two locations alongthis linear anomaly (Stations 5N and 95N) there appear to be subsurface targets notassociated with the linear feature . These features did not appear as magnetic anomaliessuggesting that although they are electrically conductive they are non-ferrous .Golder AssociatesAugust2000-9-003-5435The EM single channel data indicated two additional anomalies located at Stations 50E, 70Nand 120E, 80N . These did not appear in the differential channel data and therefore indicatethat the object is near the surface .3.5 Site 1 2: School Playground West of SchoolThis site is located west of the school near the playground . The site dimensions are 200 ftwest to east and 180 ft south to north and data were collected along east -west survey linesspaced 10 ft apartThe results of the geophysical grid surveys are shown in the following figures :Figure 14 . Magnetometer Data (total magnetic field)Figure 15 Magnetometer Data (vertical gradient)Figure 16 . EM Data (Top and bottom channels)Figure 17 . EM Data (differential channel)There were many metallic features on the surface that influenced both the magnetic and EMdata . These features, annotated on Figures 15 and 17, included various playgroundstructures, an iron pipe, a concrete pad and a large metal gate . The only region within thesite where the magnetometer data did not correlate with surface debris is in the south-eastcorner between Stations185E and 200E and south of Station 80N . The extent of themagnetometer anomaly is outlined in red in Figures 15 and 17 .The differential channel data supports the magnetometer data and indicates that the debrisis located along the eastern site boundary between Stations 20N and 75N . The regions thatare negative in this data (plotted in black , Figure 17) correspond to locations of metallicobjects at the surface or extending slightly above the surface . The strong response in thedifferential channel data in the region of the concrete pad suggests that there is possibly alarge metal object located beneath the pad .Golder AssociatesAugust2000-10-003-54353.6 Site J : South of City Building, Along North Shore of Troutman LakeThis site consisted of two sections or regions . Region 1, located in the north-east corner ofthe site, and south of the city building, is 75 ft square . Region 2, located along the northshore of Troutman Lake is 640 ft by 100 ft . Data were collected in both regions along eastwest survey lines spaced 10 ft apart .The results of the geophysical grid surveys are shown in the following figures :Figure 18 . Magnetometer Data (total magnetic field)Figure 19 Magnetometer Data (vertical gradient)Figure 20 . EM-61 Data (top and bottom channels)Figure 21 . EM-61 Data (differential channel)Region 1 did not contain any surface metallic debris, and did not have either magnetic orelectromagnetic anomalies . Region 2 contained frequent piles of surface metallic debris andother objects that affected the magnetometer and the EM-61 readings . These surfacefeatures are noted in Figures 19 and 21 .There were two magnetic anomalies that were not associated with surface features . One islocated at Station 50E, 40N and the other at Station 460E, ION . Both of these magneticanomalies are relatively weak and isolated to a small region . The E data also indicated ananomaly at the first of these locations (Station 50E, 40N) . The location of the secondmagnetic anomaly did not correlate to anomalies in the EM data . This could indicate anobject buried too deep for the EM-61 to detect .3.7 Site K : Snow Fence AreaThis site, located north of the school by the snow fence, is 325 ft by 350 ft . Data werecollected along east-west lines spaced 10 ft apart . Most of the site consisted of gravel,Golder AssociatesAugust2000-11-003-5435however the eastern region of the site still contained a snowdrift . The site extended northof the snow fence near the south-west corner of site M.The results of the geophysical grid surveys are shown in the following figures :Figure 22. Magnetometer Data (total magnetic field)Figure 23 Magnetometer Data (vertical gradient)Figure 24. EM -61 Data (top and bottom channels)Figure 25 . EM -61 Data (differential channel)The magnetometer data indicated anomalies at the far north -east corner north of the snowfence and in a linear region along Lines 5ON and 60N east of Station 230E .The highgradient reading along Line 220N and 340N resulted from failure of the top sensor . Thiscan be seen in Figure 22, by comparing the top and bottom sensor readings . The top sensorhas readings that fluctuate by tens of thousands of nT while the bottom sensor is stable . Anobject could not affect the top sensor so drastically without influencing the bottom sensor .The region of anomalous magnetic readings is outlined in red in Figures 23 and 25 .The EM data further delineates the locations and boundaries of the magnetic anomalies .The EM data indicates several isolated objects in both of the regions north of the snow fenceand in the south-east corner of the site .3 .8 Site L : By Q BuildingThis site is 320 ft by 150 ft and is located in the area surrounding building Q and the nearbysea vans . Data were collected along north -south survey lines spaced 10 ft apart .The results of the geophysical grid surveys are shown in the following figures :Figure 26. Magnetometer Data (total magnetic field)Figure 27 Magnetometer Data (vertical gradient)Figure 28 . EM-61 Data ( top and bottom channels)Figure 29. EM-61 Data (differential channel)Golder AssociatesAugust2000-12-003-5435The primary areas with high magnetic values are associated with the building and with thetwo sea vans to the east of the building . There are two weak anomalies, however, at Station320E, 50N and Station280E, ON . These regions are outlined in red in Figures 27 and 29 .Both of these locations had anomalous EM-61 values in differential mode and areinterpreted to be small, buried metallic objects .3.9 Site M : North of Snow FenceThis site is located north of the snow fence and is 300 ft by 320 ft . No surficial debris waspresent at the site . Data were collected along east-west survey lines spaced 10 ft apart.The results of the geophysical grid surveys are shown in the following figures :Figure 30. Magnetometer Data (total magnetic field)Figure 31 Magnetometer Data (vertical gradient)Figure 32. EM-61 Data (top and bottom channels)Figure 33. EM-61 Data (differential channel)The data from the top sensor contains some faulty readings along the Line 16ON betweenStations 160E and 240E . These reading are interpreted to be erroneous for the same reasonas described above . Magnetic field anomalies were found primarily in the south-east cornerof the site .In addition , there are anomalous readings at Station 30E, 160N and betweenStations 20E and 90E along the Line 310N . The magnetic field anomalies are outline in redin Figures 31 and 33 .The EM-61 confirmed the presence of a metallic object at this location and also indicated anobject at Station 160E, 170N, and in the area that is obscured in the magnetometry data bythe faulty readings .Golder AssociatesFIGURESGolder AssociatesLEGEND- LIMIT OF GEOPHYSICAL STUDIES (1994)2000 GEOPHYSICAL STUDY01200FEETbdarkjK:wrojects%2o00100354351000\93 9ta .dwgl8-24-o 1 st91x- Ii :-2400NOTE :This map was produced from data recieved from MontgomeryWatson .FIGURE1VICINITY MAP AND LOCATIONOF THE SURVEY SITEMW/GAMBELL BURIED DEBRIS/AKG o lder Associates3300-'i275-275-.25250-225-I2001115o125-I200-1751CD22I-,17sr-c15Fo1007550-50-25-25-255075100125 150 175 200225250275300002550Distance (ft)Top Sensor75100125 15 0 175Distant e (ft)200225250 275 300Bottom SensorSITE GMAGNETOMETRY SURVEYMag 858 TOTAL FIELDN0OmOOft 25 ft 50ft 75ft 100ftGEOPHYSICAL ASSESSMENTGAMBELL, ST. LAWRENCE ISLAND, AKMONTGOMERY WATSONGOLDER ASSOCIATES, INC .REDMOND, WAAugust 15, 2000' oos .s.:a nskooo I Fig . 2300-1 -II11!1I10000 nT/ft275-400 nT/ft300 nT/ft250-200 n T/ftH 100 nT/ft2250 n T/ft200,-100 nT/ft-200 nT/ft175-j-300 nT/ft-400 nT/ftc 150CU-500 nT/ft0Vertical MagneticField Gradient125--1100J'0 ft 25 ft 50 ft 75 ft 100 ft75--50-®WellSITE GMAGNETOMETRY SURVEYMag 858 GRADIENT25JII00255075f~100125150175200Nayvaghaq LakeDistance (ft)!225250275300GEOPHYSICAL ASSESSMENTGAMBELL . ST . LAWRENCE ISLAND . AKMONTGOMERY WATSONCOLDER ASSOCIATES, INC .REDMOND, WAAugust 15, 2000 1OOO 5435 t s 000Fig . 330030I27525091225-4I200200175mc 150-jm0125125-)100-Ii75 -,5025-C255075100125 150 175200225250Distance (ft)Top Channel2753000255075100125 150 175 200Distance (ft)225 250 275 300Bottom ChannelSITE GTIME DOMAIN EMEM-61 TOP AND BOTTOM CHANNELS33000<<<<0003330000<<<<Oft25 ft 50 ft 75 ft 100 ftGEOPHYSICAL ASSESSMENTGAMBELL, ST . LAWRENCE ISLAND, AKMONTGOMERY WATSONGOLDER ASSOCIATES, INC .REDMOND, WAAugust 15, 2000Fig . 490 mVi80 mV70 mV- 60 mV50 mV40 mV30 mnV20 mV10 mVnVEM-61 responseSITE GTIME DOMAIN EMEM-61 DIFFERENTIAL CHANNELWell0255075100Nayvaghaq LakeGEOPHYSICAL ASSESSMENTGAMBELL, ST . LAWRENCE ISLAND, AKMONTGOMERY WATSONGOLDER ASSOCIATES, INC .REDMOND, WAAugust 15, 2000Fig . 5125Top Sensor100c_N075J50250 25 50 75 100 125 150 175 200 225 250 275 300 325 350 375 400 425 450 475 500 525 550 575 600Distance (ft)I150-,tIIIIII125-U,0Bottom Sensorh5025100 25A50 75 100 125 150 175 200 225 250 275 300 325 350 375 400 425 450 475 500 525 550 575 600Distance (ft)SITE HMAGNETOMETRY SURVEYMag 858 TOTAL FIELD000m000000070 ft 25 ft 50 It 75 ft 100 ftGEOPHYSICAL ASSESSMENTGAMBELL, ST . LAWRENCE ISLAND, AKMONTGOMERY WATSONGOLDER ASSOCIATES, INC .REDMOND, WAAugust 15, 2000 I003-SA35 Wk 000 1 Fig . 6150-125100c 75mzS05025-0-~0 2550 75 100 125 150 175 200 225 250 275 300 325 350 375 400 425 450 475Aga401500 525 550 575 600Distance (ft)N00000N00W000000Oft25 ft 50 ft 75f1 100 ftSurface teatures/surfice debrisEM or magnetic anomalyInterpreted to be buried debrisSITE HMAGNETOMETRY SURVEYMag 858 GRADIENTGEOPHYSICAL ASSESSMENTGAMBELL , ST . LAWRENCE ISLAND, AKMONTGOMERY WATSONGOLDER ASSOCIATES, INC .REDMOND, WAAugust 15, 2000Fig . 7WITop Channel255075100 125150 175 200 225 250 275 300 325 350 375 400 425 450 475 500 525 550 575 600Distance (ft)150125(-Bottom Channeli10mc 75m02550100 125 150 175 200 22575250 275 300 325 350 375 400425 450 475500 525550 575 600Distance (ft)SITE HTIME DOMAIN EMEM-61 TOP AND BOTTOM CHANNELS330<0<w03003003CD (0000000<<<<00030 h 25tt 50ft 7511 100ftGEOPHYSICAL ASSESSMENTGAMBELL, ST . LAWRENCE ISLAND, AKMONTGOMERY WATSONGOLDER ASSOCIATES, INC .REDMOND, WAAugust 15 . 20001 003 5435 fesk 0001Fig . 8150125100.rUU 75m50i250'-0 25 50 75 100 125 150 175 200 225 250 275 300 325 350 375 400 425 450 475 500 525 550 575 600Distance (ft)SITE HTIME DOMAIN EMEM-61 DIFFERENTIAL CHANNELmONWA33EEIn~333C-000808603m33338<Oft25 ft 50 ft 75 ft 100 ft- Surface features/surfice debrisEM or magnetic anomalyInterpreted to be buried debrisGEOPHYSICAL ASSESSMENTGAMBELL, ST . LAWRENCE ISLAND, AKMONTGOMERY WATSONGOLDER ASSOCIATES, INC .REDMOND, WAAugust 15 , 2000I oosa r .Y, aoO I Fig . 9150140-1401130-130-120110-vc1 to-I100-100-go-90-88m0I120-rI-L7~Ir60-60-50-50-40-~-40-,,I30-if22010-10000-10 20 30 40 50 60 70 80 90 100 110 120 130 140 1500 10 2030 40 50 60Distance (ft)Top Sensormn-n(DCLcnN00O70 80Distance (tt)90 100 110 120 130 140 150Bottom Sensor-i0dv>Ut00cnc0 0o oO 00ft251SITE 11MAGNETOMETRY SURVEYMag 858 TOTAL FIELDGEOPHYSICAL ASSESSMENTGAMBELL , ST . LAWRENCE ISLAND, AKMONTGOMERY WATSONGOLDER ASSOCIATES, INC .REDMOND, WAAugust 15 . 20001ooo-5435 vµ oooI Fig . 101 50140-130-Suspected Utility120-110-5010000 nT/ft450 nT/ft400 nT/ft350 nT/ft300 n T /ft250 nT/ft200 n T/ft150 n T/ft100 n T/ftnT/ft0 nT/ft10900-a)cIm0 70--50 n T/ft-100 nT/ft'` -150 nT/ft-200 nT/ft-250 nT/ft-300 nT/ft-350 nT/ft-400 nT/ft-450 nT/ft-500 nT/ft-10000 nT/ftVertical MagneticField Gradient60 -i4S urf ace f eatures/ sur f ice debris30-i20-i0-0102030405060/08090Distance (ft)100110120130140150EM or magnetic anomalyInterpreted to be buried debrisSITE 11MAGNETOMETRY SURVEYMag 858 GRADIENTGEOPHYSICAL ASSESSMENTGAMBE LL . ST . L AWRENCE IS L AND . AKMONTGOMERY WATSONGOLDER ASSOCIATES, INC .REDMOND, WAAugust 15, 2000ow-„,s,,,,,o,1I Fig . 1 115~~150-_140130120'80UCCU~'~70~6II'rn"RF36050s7U, .e--I0403020+410 10 20 30 40 50 60 70 80 90 100 110 120 130 140 150 0 10 20 30 40 50 60 70 80 90 100 110 120 130 140 150Distance(ft)DistanceTop Channel(ft)Bottom ChannelSITE 11TIME DOMAIN EMEM-61 TOP AND BOTTOM CHANNELSW0N0303O3O3o3L-L-IL_1_ I- T0303O3O3.__0~ft 25 ft 50OO3ftGEOPHYSICAL ASSESSMENTGAMBELL . ST . LAWRENCE ISLAND, AKMONTGOMERY WATSONGOLDER ASSOCIATES, INC .REDMOND, WAAugust 15, 2000 10D3- 543 5 'sk000I Fig . 12Suspected Utility90 my120-r- 80 mV70 mV110760 m VI100-1iI9050 m V40mV30 mVrgig,m20mVUC10 mV0 700mVEM-61 response6050Oft40251150ftSurface features/surfice debrisEM or magnetic anomalyInterpreted to be buried debris30iInSITE 11TIME DOMAIN EMEM-61 DIFFERENTIAL CHANNELIGEOPHYSICAL ASSESSMENT01020I3040I5060I7080GAMBELL . ST . LAWRENCE ISLAND, AK90Distance (ft)100110120130140150MONTGOMERY WATSONGOLDER ASSOCIATES, INC .REDMOND, WAAugust 15 . 2000Fig . 1318170-160-'tax151413120A1 i1a 1 O 0c90a6 8080-k7060-60~4:5040-13020-1000 10 20 30 40 5060 70 80 90 100 110 120 130 140 150 160 170 180 190 200Distance (ft)010 20 30 40 50 60 70 80 90 100 110 120 130 140 150 160 170 180 190 200Distance (ft)Top SensorBottom SensorAO0O000O0HHH000 It 25 ftSITE 12MAGNETOMETRY SURVE YMag 858 TOTAL FIELDGEOPHYSICAL ASSESSMENTGAMBELL . ST. LAWRENCE ISLAND, AKMONTGOMERY WATSONGOLDER ASSOCIATES, INC .REDMOND, WAAugust 15 . 2000 1DO3.54351sk00LI Fig . 141180-1IConcrete Pad170I10000 nT/fli .16015G143iHwSurface Pipe120-400 nT/fti200 nT/ft100 nT/ft0 nT/ft-100 nT/ft-200 nT/t1110-i100--300 nT/fli-400 nT/ftC 90mur-500 nT/f180-Vertical MagneticField GradientSurface Debris70-aPlayground Equipment1; tf c5300 nT/ftoft25ft50ftS u rf ace fea t ures /su rfice d ebr isEM or magnetic anomaly401 ,1Interpreted to be buried debris30SITE 12MAGNETOMETRY SURVEYMag 858 GRADIENT2010-'I .0 10 20 30 40 50 60 70 80 90 100 110 120 130 140 150 160 170 180 190 200Distance (ft)GEOPHYSICAL ASSESSMENTGAMBELL, ST . LAWRENCE ISLAND, AKMONTGOMERY WATSONGOLDER ASSOCIATES, INC .REDMOND, WAAugust 15 , 2000 1o0.1-s .7s wk ooo I Fig . 1525i075100Distance (ft)125150175200Bottom ChannelTop ChannelSITE 12TIME DOMAIN EMEM-61 TOP AND BOTTOM CHANNELSOIVWALno)8 < o °o O° °0 0 °°3 < < < < < <°og3<3 °< 33<°00tt25ft50ttGEOPHYSICAL ASSESSMENTGAMBELL , ST . LAWRENCE ISLAND, AKMONTGOMERY WATSONGOLDER ASSOCIATES, INC .REDMOND, WAAugust 15, 2000Fig . 16180-G~'17CiConcreteSPad1000 mV900 mVi13Surface Pi800 mV700 mV600 mV12500 m V400 mV100300mV200 mVc 90ma0F 0'100EmV0 mVEM-61 response60'i50- .Oft401if2o-,50ftSurface features /surfice debrisSITE 12TIME DOMAIN EMEM-61 DIFFERENTIAL CHANNEL10-0ftEM or magnetic anomalyInterpreted to be buried debris30-?0-25102030 4050 6070 80 90 100 110 120 130 140 150 160 170 180 190 200Distance (ft)GEOPHYSICAL ASSESSMENTGAMBELL . ST . LAWRENCE ISLAND , AKMONTGOMERY WATSONGOLDER ASSOCIATES, INC .REDMOND, WAAugust 15 , 20001Oo3 5435 lack ooo I Fig . 1 7Top Sensor5025i0 25 50 75 100 125 150 175 200 225 250 275 300 325 350 375 400 425 450 475 500 525 550 575 600625Distance (ft)175-Bottom Sensor150-M0 75-5025Onf0 25 50 75 100 125 150 175 200 225 250 275 300 325 350 375 400 425 450 475 500 525 550 575 600 625FDistance (ft)Ln L"8800S0l-f-l 1 TL7 CALnCOOcng-4tf:O ft 25 ft 50 ft 75 ft 10011SITE JMAGNETOMETRY SURVEYMag 858 TOTAL FIELDGEOPHYSICAL ASSESSMENTGAMBELL , ST . LAWRENCE ISLAND . AKMONTGOMERY WATSONGOLDER ASSOCIATES, INC .REDMOND, WAI_1SeaVana5025-I0 25 50 75 100 125 150 175 200 225 250 275 300 325 350 375 400 425 450 475IPipeNBarrelI.I500 525 550575 600 625Distance (ft)00H000OHHN00OHSITE JMAGNETOMETRY SURVEYMag 858 GRADIENTAOO000HHH00OHOft 25 ft 50 ft 75 ft 100 ft- Surface features/surfice debris- EM or magnetic anomalyInterpreted to be buried debrisGEOPHYSICAL ASSESSMENTGAMBELL . ST . LAWRENCE ISLAND. AKMONTGOMERY WATSONGOLDER ASSOCIATES, INC .REDMOND, WAAugust 15, 2000 1 00- 54351eskaooI Fig . 191175--~III150-,Top Channel125-+,v 10'Vl~0 'I01III1II1III25 50 75 100 12512'515015'017520017'5260225 250 275 300 325 350 375 400 425 450 475 500 525 550 575 600 625 650Distance (ft)I175-'1II1!II1IIIIC150125-Bottom ChannelLa> 1(Impl'`25~-25 50 75 100 125 150 175 200 225 250 275 300 325 350 375 400 425 450 475 500 525 550 575 600 625 650Distance (tt)0E°o000`-<<<<<<000ALLSITE JTIME DOMAIN EMEM-61 TOP AND BOTTOM CHANNELSC000000<<<<<{0000O tt 25 It 5U It 75 ft 100 ftGEOPHYSICAL ASSESSMENTGAMBELL, ST . LAWRENCE ISLAND, AKMONTGOMERY WATSONGOLDER ASSOCIATES, INC .REDMOND, WAAugust 15, 2000 1003-5435 ~ 00DFig . 2001175-i150_SeaVan125IPipeBarrelN100UGRf„.__ , . . . . . .i-6 75y50'25i0<3250035000300375CjI003100 125150175 200 225 250 275 300 325 350 375 400 425 450 475 500 525 550 575 600 625 650Distance (ft)0 ft 25 ft003003o(00o 0 003 35C"75 ft 100 ftSurface features/surfice debrisEM or magnetic anomalyInterpreted to be buried debrisSITE JTIME DOMAIN EMEM-61 DIFFERENTIAL CHANNELGEOPHYSICAL ASSESSMENTGAMBELL. ST. LAWRENCE ISLAND . AKMONTGOMERY WATSONGOLDER ASSOCIATES, INC .REDMOND, WA350TL~~0325-325-300-300-275250-_"275--I250-225s 2009!HS•225-I4$200-175-S a)U 175-I-(a` 4.150125--150-`125-too-Erroneous Readingstoo-75-..75-50-50-25-25a25 50 75 100 125 150 175 200 225 250 275 300 3254e025 50 75 100 125 150 175 200 225 250 275 300 325Distance (ft)Distance (ft)Bottom SensorTop Sensor0CwOCD-n(DCLLnCF)OOO40O0O0ft25ft50ftt100ftSITE KMAGNETOMETRY SURVEYMag 858 TOTAL FIELDGEOPHYSICAL ASSESSMENTGAMBELL, ST . LAWRENCE ISLAND. AKMONTGOMERY WATSONGOLDER ASSOCIATES, INC .REDMOND, WAAugust 15, 2000 1003-s4351esk 000Fig . 2235+a-----!T- i X000 nT/ftR es id en300400 n T/ft3 0 0 n T/ft275-- 200 n T/ f tSnow Fence-~ 100 nT/ft2500 n T/ft---100 nT/ft225-1nT/fllip200--300 nT/ftc 175-1my IOI15$ .1125-500 nT/ftVertical MagneticField Gradient`0 ft 25 11 5011 75 ft 100 ftErroneous readings100--from top sensorS ur face feat u res/surfice debrisEM or magnetic anomalyInterpreted to be buried debris75I50-SITE KMAGNETOMETRY SURVEYMeg 858 GRADIENT25-0I 200-400 nT/ftm0255075100125150175Distance (ft)Fr200 225250-GEOPHYSICAL ASSESSMENTGAMBELL, ST . LAWRENCE ISLAND, AKMONTGOMERY WATSON275300325GOLDER ASSOCIATES, INC .REDMOND, WAAugust 15, 2000Fig . 23_~-325-E325300-300275-$350l~k~ I'250225-z200-°~c175mNcvc175Na00150-150-125-125100-10075-t50755025~250-25 50 75 100 125 150 175 200 225 250 275 300 3250r0 25 50 75 100 125 150 175 200 225 250 275 300 325Distance (ft)Distance (ft)Top ChannelBottom ChannelSITE KTIME DOMAIN EMEM-61 TOP AND BOTTOM CHANNELSmBOV1m00<03No3<WUi-- I I I LWc 0C 003 < < < 3<VW<<c0o 0o oo 0o 003 3 3 3 3<<<Oft 25 ft50h75 f1 100 ftGEOPHYSICAL ASSESSMENTGAMBELL, ST . LAWRENCE ISLAND, AKMONTGOMERY WATSONGOLDER ASSOCIATES, INC .REDMOND, WAAugust 15, 2000Fig . 24350 .i-9010 mV800 m V27I`700 mV25600 mVI500 m VI225-200-400 mVIi300 mVI200 mV100 mVi0m 17510 mVOi150--r-EM-61 respo nseI125-III1o0-Oft 25 ft 50 ft75 ft 100 f tS u rf ace featur es/ su rfi ce debr i sEM or magnetic anomalyInterpreted to be buried debris75SITE KTIME DOMAIN EMEM-61 DIFFERENTIAL CHANNELGEOPHYSICAL ASSESSMENTGAMBELL. ST . LAWRENCE ISLAND, AKMONTGOMERY WATSON2525so75100125150 175Distance (ft)200225250275300325GOLDER ASSOCIATES, INC .REDMOND, WA150-125Top100Sensor70000nT59000 nTi58000 nTX57000 nT50--56000 nT=55000 nT25-- 54000 nT0255075100125150175Distance (ft)20022525027553000 nT30052000 nT51000 nT1SG--f12514too-50000 nTi.Total Magnetic FieldiBottom Sensors=.0 ft 25 ft 50 ft 75 ft 100 ft050SITE LMAGNETOMETRY SURVEYMag 858 TOTAL FIELD25-~0GEOPHYSICAL ASSESSMENTGAMBELL . ST . LAWRENCE ISLAND, AK0255075100125150175Distance (ft)200225250275300MONTGOMERY WATSONGOLDER ASSOCIATES, INC .REDMOND, WAAugust 15, 2000 1003 .5431 teak Duo I Fig . 26150'.iII1II1II1IIIIi1I1140130120110100-90SeaVansN 70-Dd50-40-I30 ;.2o10 10 20 30 40 50 60 70 80 90 100 110 120 130 140 150 160 170 180 190 200 210 220 230 240 250 260 270 280 290 300 310 3210Distance (ft)ymCDcn0lp(D0A0-I^-iW0-i0N0-i0NO-CJ0-O7Z.07Oft25 It50 It- Surface teal ures /surfice debrisEM or magnetic anomalyInterpreted to be buried debrisSITE LMAGNETOMETRY SURVEYMag 858 GRADIENTGEOPHYSICAL ASSESSMENTGAMBELL . ST . LAWRENCE ISLAND . AKMONTGOMERY WATSONGOLDER ASSOCIATES, INC .REDMOND, WA10110 mV9017 mVop Channel800 mV700 mV600 mVs0500 mV50400 m V300 mV25200 mV100 mV0 -0?5500 mVn01-1 n0 mVDistance (ft)EM-61 response125.kBottom Channel17 ;Oft 25 ft 50 ft 75 ft 100 1150SITE LTIME DOMAIN EMEM-61 TOP AND BOTTOM CHANNELS22Q._T_._ ._.. .__Distance (ft)..GEOPHYSICAL ASSESSMENTGAMBELL , ST . LAWRENCE ISLAND, AKMONTGOMERY WATSONGOLDER ASSOCIATES, INC .REDMOND, WAAugust 15, 2000 1ODi .5 leak 000 Fig . 28IM__M140-302010Oat90Im-801 .170~"J-6-5-4030-201000i_i,,7Ti1 iiiiii10 20 30 40 50 60 70 80 90 100 110 120 130 140 150 160 170 180 190--Distance (ft)OaN3<a3CJ383.(T(A3330 0 00-mCD333a aOftaO325 ft50ftSurface features /surfice debrisEM or magnetic anomalyInterpreted to be buried debrisSITE LTIME DOMAIN EMEM-61 DIFFERENTIAL CHANNELGEOPHYSICAL ASSESSMENTGAMBELL . ST . LAWRENCE ISLAND, AKMONTGOMERY WATSONGOLDER ASSOCIATES, INC .REDMOND, WAAugust 15. 2000Fig . 29M(D33001275-275-25D--250-225-225--20D-200-175-tilgoAllAD IA175-IUCCM4m 150-0 15@125r`~"wt.1254A100Erroneous Readingsi7j550-T75 100 125 1500--~175 200 225 250 275 300Sensor(ft)Bottom02550E0U'00LnUUcnO00000N-IL_]u,O75100125Distance150175(ft)200225250275300SensorSITE MMAGNETOMETRY SURVEYMag 858 TOTAL FIELD<5mCD25~DistanceTopi;4ov0 25 500Ir425-Tmar'cn U' Cn Cn -4mOOO0O0O0O00O00U'-i0SOft 25 ft 50 f175 t1 100 ftGEOPHYSICAL ASSESSMENTGAMBELL, ST . LAWRENCE ISLAND, AKMONTGOMERY WATSONGOLDER ASSOCIATES, INC .REDMOND, WAAugust 15, 2000 1003-54351a5k000Fig . 30300-110000 nT/ft275 j400 nT/ft300 nT/ft250-200 nT/ft225-200-FmV100 nT/ftEr roneous leadingfrom top sensor0 nT/ft1 00 nT/ft:,-200 nT/ft-300 nT/tt175-400 nT/flC0-500 nT /ft50-i1,Vertical MagneticField Gradient4125-II10Oft25 ft 50 ft75 ft100 ftSurface features/surfice debris75EM or magnetic anomalyInterpreted to be buried debrisSITE MMAGNETOMETRY SURVEYMag 858 GRADIENT25-r040~2550i750:100125150175Distance (ft)200225250275300GEOPHYSICAL ASSESSMENTGAMBELL . ST . LAWRENCE ISLAND, AKMONTGOMERY WATSONGOLDER ASSOCIATES, INC .REDMOND, WAAugust 15, 2000 1003.5436 ta" 0001 Fig . 31ic24222-_ 1M10Vt 1`01l5'02550751001251501752002252502753000255075100Distance (ft)Top Channel125150175200Distance (h)225250275300Bottom ChannelSITE MTIME DOMAIN EMEM-61 TOP AND BOTTOM CHANNELSGEOPHYSICAL ASSESSMENTGAMBELL . ST . LAWRENCE ISLAND, AKMONTGOMERY WATSONOh 2E tt 50h 15ft t00h03GOLDER ASSOCIATES, INC .REDMOND, WA< < < < < < < < < <II,August 15, 2000W5 u 35- CR I Fig . 3230'.1000 mV2-`900 mVh~ 800 mV25 ;I I-.600 mV22~5 0 0 mV400 mV20i,300 mV200 mV100 mVmUCNmV0 150-EM-61 response121-1Oft 25 ft10050 ft 75 ft'100 ftSurface features/surfice debrisEM or magnetic anomalyInterpreted to be buried debrisSITE MTIME DOMAIN EMEM-61 DIFFERENTIAL CHANNEL25GEOPHYSICAL ASSESSMENTGAMBELL, ST . LAWRENCE ISLAND, AKMONTGOMERY WATSON255075100125150175Distance (ft)200225250275300GOLDER ASSOCIATES, INC .REDMOND, WAAugust 15 . 2000Fig . 33APPENDIX CAsbestos Survey Field NotesMONTGOMERY WATSONMONTGOMERY WATSONCPByDateChkd . ByDescriptionCClientG. ,0344,Porn'v~J 2A• (la-o jw ;a`,~Cc-dd ocrOCAP.o L)MONTGOMERY WATSONBy%5Chkd . ByDate• 4_ wDescriptio~,c7Lft2- r,MONTGOMERY WATSONBy `'=Date 61Chkd . By DescriptionClientShee'n~-~~~~-Job NoofMONTGOMERY WATSON41droDate_Desc riotiClient-5 %J- QSheet of-SSA-CW2IBMe.A- \Job Noodtrw,.~flyu.6vr~4,go c?L."5,100DAJc s.t0 °a' >< t1 '\(MONTGOMERY WATSONBykVW~ .d'DateDescriptionChkd . ByU S~P ~' S h eetClient,-JobNo .UC0,!)j t:. .r.,,.Jt(c---trk t au3YLU\11VJ AL4'.-~- ~rK4ne,(~ V,,u-t^sP`~MONTGOMERY WATSONByDatef ° / -A`b 'ClientChkd . By DescriptionA -Sheet _In bNo .(9fW L ~. ~r,,m 4-r %-Q.0RECYCLABLE'Rite in the Rain' - A unique All-Weather Writing paper created to shed water and enhancethe written image . It is widely used throughout the world for recording critical field data nall kinds of weather.Available in a variety of standard and customprinted case -bound field books, loose leaf,spiral and stapled notebooks, mufti-copy setsand copier paper.'Rite in the Ran' - All-Weather writing papersare also available in a wide selection of rollsand sheets for printing and photocopying.a pMMxa ofJ. L DARLING CORPORATIONTacoma, WA 98424-1017 USA(253)922.5000 FAX (253) 922-5300www.riteintherain .coma22813L -o so Is'-Z.? -avsr-FNQ4303do''Sr3. &3 ES~+L st, lc~BL45-fA -7 --cca23tsa ' ~4ll--C-~tL,iSoC .c7vurennPte- ZS',7ooj , ' xx 7600'rr%rL q pA 9 341 X25 ' 1 x c"vpQSZ, OQ05 A )4 qa=E-hV•tow4m a)Q W13) cclS-L i sSL X -.TLRlts 2'L Cs i ~fcL 1cuws,S L x W2~~'Z'%XQS IilNa -zy~C24-n,~QjQyZ i gIR4*©c \\a G d ,dam~-Z1-W-SPpNCVrte. ryaG15Cv 2- ! --off0 ~.(-28 --aoW { P (. -,,sCPt) 421~-.4~4-- ~a l,t A Q A-((\ e.A,) Va'fYvN\ ~lax.a ~S `n tee. . rY, azz 51Ws-r- ` -Wari5v,,,,,sL,Ar-(II-.. 1 .q q vs-."mcy,( . w~A.e,, QV%4Ie4l, .T IDuc t-VI A- e,4k".,V\Wa-m'-771)-v-w-n 40.,lb,Ql) . -t ror.4 4(Is xy.~wlA1~oqnC-v~L-un).a--" (1, ) O~i q Tq-v-)~crZ x , + •x ,vLLZ`f-c f-Y14 `- 'r'Id44APPENDIX DFuture Construction Information9% MONTGOMERY WATSONNative Village ofGambellMemoTo: Bonnie McLeanFrom: Michael Apatiki, DoD/NVG CA ManagerCC:7v-Date: 2/22/00Re: Planned Projects in the Village of GambellThe following is a list of planned projects in Gambell :1 . City of Gambell : Fire Hall Construction near Qemgughvik Building , possibly thesummer of 2000 . (See map for location .)2 . City of Gambell : Water Feasibility Study-drilling north new Pump House .Coc4 nc ;( rne .nber Sai~ ar; Il~nc~ m jy!!jf- sfaif in Tune3. BIA/IRR: Roads inside the village . (See map) T,4,,-' ;„ f4e- P„'dr, ~r 1 ;5years ; r, Ne -c4. FAA: no plans5 . Bering Straits Regional Housing Authority : 8-10 more houses built east of theprior houses already built .6 . VSW: no plans .I)OFFICE'ax~rnd~ LaS~tioEl N '38 87(b) 'F Mil -E=APPENDIX ERemoval Cost EstimationsAft MONTGOMERY WATSONNative Village of GambellStrategic Project Implementation No.Cleanup of Former DOD FacilitiesCast Estimate BreakdownSite or LocationDescription18Former main camp8AEastern edge of runway2Former military housingloperationburial siteFormer military power facility7, 16, & 71A16 & 256 & 178 .includes geophysical survey area LArm LandfillsArmy landing areaGambell municipal building site,South Housing UnitsMilitary landfill & army landfillMilitary ImpactBuried metallic debris,potentially buried tanks .Exposed Marsten mattingBuried concrete slab .Buried metallic debrisBuried metallic debris and onehalf buried crane,North beach/ Air Force landing areaBuried metallic debris .Former tramway siteBuried Debris and possibletransformers in close proximity13Former radar power station3A4EFormer communication facility/ burialareaTroutman take ordnance and debrisburial siteNorth beachunderwater debrisWestern edge of Sevuokuk mountain19Diatomaceous earth east of site 1820Schoolyard212223888C24Excavate buried debris, removecrane and recycle off site .Excavate buried debris, andtreat contaminated soilExcavate buried debris and .includes geophysical surveys H, K, &recycle off site .Small arms ammunition burial siteBuried small arms munitionsExcavate buried debris andand associated metallic debris . dispose/recycle off-site51Csa >Tca100Petroleum contaminated soils,Potential buried debris .Buried metallic debris .1B15Desired RemediationExcavate buried debris andrecycle off site .Excavate buried debris andrec cle off site .Excavate concrete slab anddispose off site .Excavate buried debris andrecycle off site .gto village water supplyBuried metallic debris .Buried metallic debris .Debris in Troutman lake(separate from ordnanceUnderwater metallic debris,Primarily Marstenn matting .Surface cables running alongmountainside.Diatomaceous earthConcrete rubble debris pileswithh protruding rebar andpartially buried concrete slab .concrete slabconcrete pilerubble with rebarArchaeological site at toe of Sevuoku Buried metallic debris andmountaincable ._Former CAA housingPotential asbestos containingmaterial (PACM)Debris from high school construction, Metallic debris excavatedeast of the municipal landfill .during construction of theGambell high school andreburied east of the municipallandfill .West beach archaeological siteBuried and/or partially exposedNavy landfillSouth of city building, along northshore of Troutman Lake.metallic debris/iee .Buried landfill material.Buried Metallic debris.(geophysical survey area JCosts are based on shared resources over the different remedial activities .if performed on an individual basis , the costs will be significantly highercosts have been rounded up to the neearest $5,000 incremencosts were calculated for removal of effected soils and off-site thermal treatmentcosts include $32, 000 emergency response equipment for protection of water suppltv2aEva'"'200'"a30 .5oo .a,S' c$°' 310%g_g_mZ ~a.tonnageSharedEquipmentCosts•EstimatedLabor Costby RemovalAction *Estimated Cost rfor'" o o600030,00015.00$40,77794,390Retnedlation$140,000065,00032.50$88,337$204,512$300,000100%507,5003 .75$7,078$19,665$30,00010105050520%250012,5006 .25$16,988$39,329$145,000204015150 .55100%15060022,5003,00011 .251 .50$21,235$58994$9,439$280,00020%501005--10035035 %525026,25013.13$35,675$82,591$120,000101035 %15751 .00$2,718$6,293$10,000Excavate buried debris andrecycle off site .Excavate buried debris andrecycle off site.2550310%3751,8750 .94$2,548$5,899$30,0001010350%1507500 .38$1,019$2,360$37,000'Excavate buried debris andrecycle off site.Excavate buried debris and50503109/617503,7501 .88$5,096$11,799$20,0002000 .10$272$629$5,000$12,585$20,000$25,171$40,000$50,000recycle offff site.Raise underwater metallicdebris and recycle off-siteRaise underwater metallicdebris and recycle off-siteRemove cable and recycle offsite .Excavate diatomaceous earthand dispose off site .Remove mixed concrete debrisand dispose off-site,Excavate buried debris andrecycle off site.Inspection, sampling andanalysis, and abatement ofACM .Excavate buried debris andrecycle off site .-------$1 ,260 ,000'--2 .00--4 .00$5,436$10,87210,5005 .25$14,270$33,036000 .30$815$1,888--15.082 .034 .100 .25$40,975$5,504$11,130$94862$12743$25,7691$1,573$5,000-$14,060$32,550$50,00026.25$71,349$165,18$240,000---2100----------0.671 .53-100%100%30%-20127163 .830 .150----1050052,500-2 .0001 .00$2,718$6,293$10,0001072 .5-5,0632 .53.0 .50$6,880$1,359$15,92 8$25,000-251813--Excavate buried debris andrecycle off site .--1211470Excavate buried debris andrecycle off site.Excavate and dispose off site.-$4,077150452045--5%510%4,0508,1905001,000$680$5,000$195,000$3,146$5,000Subtotal$3,025,000Itemized Project Cost'Mobilization Cost*$3,025,000TrainingTotal Cost$350,000$250,000$3,625,000ift MONTGOMERY WATSONDate :4100 Spenard RoadAnchorage, Alaska99517-2901December 15, 2000Tel : 907 248 8883Fax : 907 248 8884To: Richard JacksonFrom :Douglas QuistU.S . Army Engineer District, Alaska Re : Gambell SPIPThe following items are :I I RequestedEnclosedSent Separately viaReportSpecificationCost EstimateShop DrawingsTest ResultPrintsTest SampleOtherNo. ofCopiesDescription15Final Gambell SPIP (14 bound, 1 unbound)1Community Survey Forms1Review CommentsThis data is submitted :At your requestFor your actionFor your approvalFor your filesFor your review0 For your informationREVIEWCOMMENTSU .S . ARMY CORPS OF ENGINEERSItemNo .Drawing Sheet # ,Specific Paragraph1General2General3Table 14General5Site 6, p . 5PROJECT : DO: 18 Task 1 - Geophysical/Coop Support - Gambell, AK - NALEMPDOCUMENT : SPIP Draft and Geophysical Survey Investigation, September 2000LOCATION : Gambell, AlaskaDATE : December 8, 2000Action taken on comment by :-Bonnie McLeanREVIEWER : Richard JacksonPHONE : 907-753-5606COMMENTSREVIEW CONFERENCEDESIGN OFFICEA - comment acceptedC - correction madeW - comment withdrawn( if not , explain)(if neither , eRecommend that the geophysical surveyA - See Appendix Dreport be included as an appendix .The whole report will becolumn bound .Recommend including the completedA - Summary table and mapsinterview forms, or a summary table of thewill be in Appendix A .information contained in the forms, as anappendix .Total costs are included, but no backup orA - See Appendix E .justification for these costs is found anywherein the SPIP . Recommend cost details beincluded as an appendix or as a supplementaltable .Topographic Information Center prepared aA - Referenced inhistorical photo analysis report which containsbibliography .much visual information relevant to this SPIP .Recommend that it be at least referenced inthe bibliography, or better to include some ofthe graphics it contains in the SPIP .Paragraph indicates that BSRHA proposes toA - See Appendix C,construct additional housing adjacent to site 6 . includes :Is there any documentation such as a master1 . Firehouseplan, site plans, utility layout plans, or2 . Roadcorrespondence regarding this? Information3 . New Homessuch as this could be included as an4 . IRA Office Buildingappendix, or could be referenced in thebibliography, to support recommendations forthis site .Backcheck by :(initials)REVIEWCOMMENTSU .S . ARMY CORPS OF ENGINEERSItemNo .Drawing Sheet #,Specific Paragraph6General7Site 16, p . 78Site 22, p . 89Site 8B, p . 610Site 21, p . 811Figure 212Figure 1 Geophysical SurveyReportPROJECT : DO : 18 Task 1 - Geophysical/Coop Support - Gambell, AK - NALEMPDOCUMENT : SPIP Draft and Geophysical Survey Investigation, September 2000LOCATION : Gambell, AlaskaDATE : December 8, 2000Action taken on comment by : Bonnie McLeanREVIEWER : Richard JacksonPHONE : 907-753-5606COMMENTSREVIEW CONFERENCEDESIGN OFFICEA - comment acceptedC - correction madeW - comment withdrawn( if not, explain)if neither , ePhotographs would be helpful in depictingAsome of the sites and their potential hazardsor possible interference with futureconstruction .This area was investigated during the 1994RI . Samples indicated contamination belowcleanup levels, and the area was notsubsequently included in the Phase IIinvestigation . Is there new information whichmight support going for another look at this?Was the area more recently excavated,perhaps during utility installations?Recommend that the field survey of theasbestos in the CAA housing be included inthe SPIP as an appendix .See markup provided by COE Archaeologist,Diane HansonSee markup provided by COE Archaeologist,Diane HansonSee markup provided by COE Archaeologist,Diane HansonRefer to comment (11) aboveReplace with Site 25 .Eleven surveys indicatedstained soils were observedduring VSW improvementsexcavation between thehomes located in the centralsouthern area . This area willbe referred to as Site 24 . TheSite 16 area includes the areaaround City Hall .A - See Appendix BAAAABackcheck by :( initials)REVIEWCOMMENTSNATIVE VILLAGE OF GAMBELLItemNo .Drawing Sheet #,Specific Paragraph1Table 1, page 112Table 1, page 113Page 6, draft SPIPPROJECT : DO : 18 Task 1 -. Geophysical/Coop Support - GambellDOCUMENT : SPIP Draft and Geophysical Survey InvestigationLOCATION : Gambell, AlaskaDATE : December 8, 2000Action taken on comment by :-Bonnie McLeanREVIEWER : Mike Apatiki, CA Manager NVGPHONE : 907-985-5346COMMENTSSite or location number 5 . Former TramwaySite . The comment on this was the costwhich is $5000 seems small for a site whichcould contain dangerous transformers .Site or location number 3A, FormerCommunication Burial Area . The commentwas the same as above . The $5000 seemssmall for a site which could contain dangeroustoxic transformers .One correction to be made is on page 6 of thedraft SPIPREVIEW CONFERENCEA - comment acceptedW - comment withdrawn(if neither, explain)W - Transformer location wasexcavated in 1997 .Reference to transformersdeleted from Site 5 .A - Will recalculate to includespill response .A - Corrected . Also the IRAnew office building wasadded .DESIGN OFFICEC - correction made( if not , explain)Backcheck by:( initials)