Hubbard, T.D. Reger, R.D. 2010 map sheets, table and vector digital data Preliminary Interpretive Report PIR 2009-6B Fairbanks, Alaska - USA State of Alaska, Department of Natural Resources, Division of Geological & Geophysical Surveys 4 sheets, 1:63,360 scale http://www.dggs.alaska.gov/pubs/id/19742 The engineering-geologic map is derived electronically, using Geographic Information System (GIS) software, from the surficial-geologic map of the second segment of the proposed natural gas pipeline corridor through the upper Tanana valley, a 12-mi-wide (19.3-km-wide) area that straddles the Alaska Highway through the upper Tanana River valley from the Robertson River eastward to near Tetlin Junction in the Tanacross Quadrangle (Reger and Hubbard, PIR 2009-6A). Surficial-geologic units were initially identified by interpretation of false-color ~1:65,000-scale infrared aerial photographs taken in July 1978, August 1980, and August 1981 and locally verified by field checking in 2007 and 2008. The map shows the distribution of surficial-geologic and bedrock units grouped genetically with common properties that are typically significant for engineering applications. This map is a part of ADGGS's Alaska Natural Gas Pipeline Geology and Geohazards project, mapping the geology, geohazards, and resources along the Alaska Highway between Robertson River and Tetlin Junction. The study was done in anticipation of the proposed natural gas pipeline along the Alaska Highway corridor, to further the geologic understanding of the area and, as a basis for evaluating geohazards and resources for proposed infrastructure. The layers listed below are present as ArcGIS shape files. To enhance print quality, this publication utilized a vector topography data set. The topography data set is not included with this release. The DGGS metadata standard extends the FGDC standard to also include several elements that are required to facilitate our internal data management. These elements relate individual data items to a common dataset. Attribute information for the following layers (entities) is included in this metadata file under the "Entity_and_Attribute_Information" section. A codeset file titled, PIR2009-6B_codeset.pdf, contains the table explaining the properties of each engineering-geologic unit. There are two layers. Each layer is listed and described in detail under its own heading starting "Entity_Type_Label." Layers include: >eng_geol polygons of engineering-geologic map units >border outline shape of the study area 2008 2009 ground condition Complete As needed -144.0000 -142.5000 63.7415 63.1661 ISO 19115 Topic Category geoscientificInformation Alaska Division of Geological & Geophysical Surveys Alluvial Deposits Colluvial Deposits Construction Materials Crushed Gravel Crushed Rock Climate Change Engineering Engineering Geology Floodplain Floods Gasline Geologic Hazards Geologic Map Geologic Materials Icings Land Subsidence Landslide Liquefaction Materials Site Permafrost Proposed Natural Gas Pipeline Sand & Gravel Subsidence Surficial Geology Transportation Corridor Unconsolidated Deposits Alaska Division of Geological & Geophysical Surveys Alaska Highway Corridor Alaska Range Alaska, State of Dot Lake Robertson River Tanacross Tanacross Quadrangle Taylor Highway Tok Tok River Alaska Division of Geological & Geophysical Surveys Pleistocene Quaternary Holocene This report, map, and/or dataset is available directly from the State of Alaska, Department of Natural Resources, Division of Geological & Geophysical Surveys (see contact information below). Any hard copies or published datasets utilizing these datasets shall clearly indicate their source. If the user has modified the data in any way, the user is obligated to describe the types of modifications the user has made. The user specifically agrees not to misrepresent these datasets, nor to imply that changes made by the user were approved by the State of Alaska, Department of Natural Resources, Division of Geological & Geophysical Surveys. The State of Alaska makes no express or implied warranties (including warranties for merchantability and fitness) with respect to the character, functions, or capabilities of the electronic data or products or their appropriateness for any user's purposes. In no event will the State of Alaska be liable for any incidental, indirect, special, consequential, or other damages suffered by the user or any other person or entity whether from the use of the electronic services or products or any failure thereof or otherwise. In no event will the State of Alaska's liability to the Requestor or anyone else exceed the fee paid for the electronic service or product. State of Alaska, Department of Natural Resources, Division of Geological & Geophysical Surveys GIS Data Manager/Cartographer mailing and physical

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Fairbanks AK 99709-3707 (907) 451-5029 (907) 451-5020 (907) 451-5050 dggspubs@alaska.gov You may view our web site at http://www.dggs.alaska.gov for the latest information on available data.Please e-mail your questions and data requests when possible since our web site and e-mail address will remain current even if our phone number and mailing address change. This research was supported by Alaska State Capital Improvement Projects funding. The authors gratefully acknowledge the helpful review by De Anne Stevens, and able cartographic assistance by Patricia Gallagher, Garrett Speeter, Gail Davidson and Rachel Westbrook. Trent Hubbard was project manager during completion of the project. Field work and preparation for field work was carried out under the direction of Diana Solie. Her leadership was greatly appreciated. Microsoft Windows XP SP2, ArcGIS 9.+ Reger, R.D. Hubbard, T.D. Carver, G.C. 2011 document, map sheets and vector digital data Preliminary Interpretive Report PIR 2009-6A Fairbanks, AK, USA State of Alaska, Department of Natural Resources, Division of Geological & Geophysical Surveys 4 sheets. 1:63,360 scale http://www.dggs.alaska.gov/pubs/id/19741 Reger, R.D. Hubbard, T.D. 2010 document, map sheets and vector digital data Preliminary Interpretive Report PIR 2009-6C Fairbanks, Alaska - USA State of Alaska, Department of Natural Resources, Division of Geological & Geophysical Surveys 4 sheets, 1:63,360 scale http://www.dggs.alaska.gov/pubs/id/19743 Reger, R.D. Stevens, D.S.P. Solie, D.N. 2008 documents, map sheets and vector digital data Preliminary Interpretive Report PIR 2008-3A Fairbanks, AK, USA Alaska Division of Geological & Geophysical Surveys 2 sheets, scale 1:63,360 http://www.dggs.alaska.gov/pubs/id/17961 Reger, R.D. Solie, D.N. 2008 document map sheets and vector digital data Preliminary Interpretive Report PIR 2008-3B Fairbanks, AK, USA Alaska Division of Geological & Geophysical Surveys 2 sheets, scale 1:63,360 http://www.dggs.alaska.gov/pubs/id/17981 Reger, R.D. Solie, D.N. 2009 document, map sheets and vector digital data Preliminary Interpretive Report PIR 2008-3C Fairbanks, AK, USA State of Alaska, Department of Natural Resources, Division of Geological & Geophysical Surveys 10 p., 2 sheets, scale 1:63,360 http://www.dggs.alaska.gov/pubs/id/17621 Carver, G.A. Bemis, S.P. Solie, D.N. Castonguay, S.R. Obermiller, K.E. 2010 document Preliminary Interpretive Report PIR 2010-1 Fairbanks, Alaska Alaska Division of Geological & Geophysical Surveys 42 p. http://www.dggs.alaska.gov/pubs/id/21121 Carver, G.A. Bemis, S.P. Solie, D.N. Obermiller, K.E. 200812 document Preliminary Interpretive Report PIR 2008-3D Fairbanks, Alaska Alaska Division of Geological & Geophysical Surveys 32 p. http://www.dggs.alaska.gov/pubs/id/17901 Reger, R.D. Hubbard, T.D. 200910 abstract Geological Society of America Abstracts with Programs vol. 41, No. 7 Boulder, CO Geological Society of America p. 637 Hubbard, T.D., Reger, R.D. 201010 abstract Geological Society of America Abstracts with Programs vol. 42, No. 5 Boulder, CO Geological Society of America 703 p. Abstract on p. 310 Surficial geology was initially mapped interpreting ~1:65,000-scale, false-color, infrared aerial photographs taken in July 1978, August 1980, and July 1983 and plotting unit boundaries on acetate overlays. Verification of photo mapping was accomplished during the 2008 field season. Engineering-geologic map units were derived from the surficial-geologic map (PIR 2009-6A). Physical properties of engineering-geologic map units are interpretive, based on extrapolation from verified localities and from previously published reports and data. Potential geologic hazards are inferred from the typical physical properties of map units, including sediment texture and ground-ice content, surface drainage, seasonal frost susceptibility, permafrost and thaw stability, slope stability, suitability for construction, potential engineering considerations and typical topographic settings. An engineering geologic map unit may include one or more surficial units but each surficial unit is only assigned to one engineering map unit. Except for a few test pits, no subsurface investigations or laboratory analyses were performed for this publication. The reader is cautioned that this map is intended only as a general guide, and that unevaluated geologic resources and hazards may be present. Detailed geotechnical investigations should be conducted prior to utilization of any map units for engineering purposes. The interpretations presented in this report have undergone two technical reviews by geologists familiar with the subject of the report and the geology of the map area. We incorporated the reviewer's suggestions into the final draft when deemed appropriate. All polygon features were derived from the surficial geologic map topology data set. These data were topologically validated using the ESRI ArcGIS 9+ .Polygon topology is present and clean and validated on the engineering geology data set using the ESRI ArcGIS 9+ software prior to export to shape file format. This dataset includes shapefiles that contain information about the mapped and interpreted engineering-geologic deposits in the map area distinguishable at a scale of 1:63,360. Subsurface data were not available for use in creating the shapefiles, other than about 10-15 soil pits dug to depths no more than 1.3 m, observations of exposures in gravel pits, highway cuts, and river banks, and drillhole data from geotechnical reports written by the Department of Transportation and Public Facilities for highway construction projects. No analytical tests were conducted for this report. The table describes engineering properties that are generally present in the mapped surficial deposits, but local variations and exceptions are most certainly to be expected. The reader is therefore cautioned that this map is intended only as a general guide, and that unevaluated geologic resources and hazards may be present. Detailed geotechnical investigations should be conducted prior to utilization of any map units for engineering purposes. The engineering-geologic map units were derived from the surficial-geologic map (PIR 2009-6A). The surficial-geologic map contacts were first hand-drawn, using a magnifying stereoscope, onto acetate overlays registered to 1:50,000-scale (nominal) prints of digital aerial photographs. The horizontal accuracy of the surficial map unit boundary locations varies due to the scale and interpretive nature of the mapping, but is expected to be accurate to at least 15 m. The 400dpi digital air photos were orthorectified using OrthoMapper 3.6 with an RMS error generally constrained to be less than 4 pixels, equating to approximately 20 m on the ground, although some areas with rugged terrain have larger errors.The acetate overlays were individually scanned and orthorectified using OrthoMapper based on the same equations developed for generating the orthophotos. Map unit boundaries were digitized on-screen into ArcGIS from the orthorectified overlays at a scale of approximately 1:25,000, using a combination of a digital USGS topographic 1:63,360-scale map layer (DRG) and the orthophoto mosaic layer to verify the position of the lines. Total horizontal accuracy of the mapped surficial-geologic contacts is thus on the order of 25 m or better, with somewhat lesser accuracy expected in areas of rugged relief. 25 mapped engineering-geologic contacts U.S. Geological Survey 1948 map Reston, VA U.S. Geological Survey scale 1:63,360 63360 All Topo software 1948 ground condition USGS Tanacross A-4, 1948- minor revisions 1973 base map U.S. Geological Survey 1949 map Reston, VA U.S. Geological Survey scale 1:63,360 63360 All Topo software 1949 ground condition USGS Tanacross B-4, 1949- minor revisions 1994 base map U.S. Geological Survey 1948 map Reston, VA U.S. Geological Survey scale 1:63,360 63360 All Topo software 1948 ground condition USGS Tanacross B-5, 1948 minor revisions 1994 base map U.S. Geological Survey 1949 map Reston, VA U.S. Geological Survey scake 1:63,360 63360 All Topo software 1949 ground condition USGS Tanacross B-6, 1949 minor revisions 1970 base map U.S. Geological Survey 1955 map Reston, VA U.S. Geological Survey scale 1:63,360 63360 All Topo software 1955 ground condition USGS Tanacross C-6, 1955- minor revisions 1982 base map Kreig, R.A. Reger, R.D. 1982 document Geologic Report GR-66 Fairbanks, AK Alaska Division of Geological & Geophysical Surveys 149 p. paper 1982 ground condition Kreig and Reger, 1982 Contains air-photo analysis and landform soil properties for trans-Alaska oil pipeline Pewe, T.L. Reger, R.D. 1983 book chapter Guidebook GB 1 Fairbanks, AK Alaska Division of Geological & Geophysical Surveys p. 5-42 Pewe, T.L. Reger, R.D. 1983 document Guidebook GB 1 Fairbanks, AK Alaska Division of Geological & Geophysical Surveys 263 p., 1 sheet, scale 1:250,000 paper 1983 ground condition Pewe and Reger, 1983 Contains information about Quaternary geology of Tanana Valley Carter, L.D. Galloway, J.P. 1978 doc Open-file Report OFR 78-794 United States U.S. Geological Survey 26 p., 3 map sheets, scale 1:125,000 125000 paper 1978 ground condition Carter and Galloway, 1978 Engineering geologic maps at 1:125,000 Mason, O.K. Beget, J.E. 1991 journal article United States Arctic and Alpine Research v. 23, no. 4, p. 392-403. paper 1991 ground condition Mason and Beget, 1991 Holocene flooding in Tanana valley Yarie, John Viereck, Leslie Van Cleve, Keith Adams, Phyllis 1998 journal article United States BioScience v. 48, no. 9, p. 690-695. paper 1998 ground condition Yarie and others, 1998 Flooding along the Tanana River U.S. Geological Survey Unknown prints and digital files unknown U.S. Geological Survey 65000 photographic print 198008 197807 198307 ground condition AHAP Aerial Photography Aerial photography used in surficial geology map unit interpretation U.S. Geological Survey 1948 map Reston, VA U.S. Geological Survey scale 1:63,360 63360 All Topo Software 1949 ground condition USGS Tanacross A-5, 1949- minor revisions 1973 base map Digital cartography - Engineering geologic map polygons were derived from surficial geology map polygons using ArcMap 9.+. The map was then attributed and edited. USGS Tanacross A-4, 1948 USGS Tanacross A-5, 1949 USGS Tanacross B-4, 1949 USGS Tanacross B-5, 1948 USGS Tanacross B-6, 1949 USGS Tanacross C-6, 1955 AHAP Aerial Photography 2009 Fieldwork - Reconnaissance field work was done in July-August 2007, and additional fieldwork was complete in July-August 2008. In addition to observations from ground traverses, materials properties were observed in several soil pits that were dug using shovels to maximum depth of 1.3 meters, in hand augured holes, and by observations of exposures along river banks, highway cuts, in gravel pits and along trench walls excavated as part of active fault studies. 2008 Interpretation of engineering properties. Mapped surficial-geologic deposits were grouped according to similar engineering-geologic properties. Kreig and Reger, 1982 Pewe and Reger, 1983 Carter and Galloway, 1978 Mason and Beget, 1991 Yarie and others, 1998 2009 Metadata creation - Metadata were assembled by T.D. Hubbard to FGDC Standards using Metavist 1.2, DGGS 7.05, a data entry program for FGDC metadata with XML output. 2010 The shapefiles were edited to eliminate extraneous columns, the file originally titled outline.shp was renamed border.shp and the metadata was updated accordingly. 2011 Vector Universal Transverse Mercator 7 0.9996 -141.00000 0 500000.0 0 coordinate pair 0.0000001 0.0000001 meters eng_geology Universal Transverse Mercator 7 0.9996 -141.00000 0 500000.0 0 coordinate pair 0.0000001 0.0000001 meters border North American Datum of 1927 Clarke 1866 6378206.4 294.978698 border border.shp polygon outlining boundary of map area Alaska Division of Geological & Geophysical Surveys Shape shape of polygon outlining map boundary Alaska Division of Geological & Geophysical Surveys shape of map area eng_geol eng_geol.shp engineering geology map unit polygons Alaska Division of Geological & Geophysical Surveys map_unit Engineering geology map unit, described in text and codeset.pdf Alaska Division of Geological & Geophysical Surveys PIR2009-6B_codeset.pdf Alaska Division of Geological & Geophysical Surveys http://www.dggs.alaska.gov/metadata/PIR2009-6B_codeset.pdf State of Alaska, Department of Natural Resources, Division of Geological & Geophysical Surveys mailing and physical

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Fairbanks AK 99709-3707 USA 907-451-5020 907-451-5050 dggspubs@alaska.gov 8 am to 4:30 pm, Monday through Friday, except State holidays Please view our website (http://www.dggs.alaska.gov) for the latest information on available data. Please contact us using the e-mail address provided above when possible. The State of Alaska makes no express or implied warranties (including warranties of merchantability and fitness) with respect to the character, function, or capabilities of the electronic services or products or their appropriateness for any user's purposes. In no event will the State of Alaska be liable for any incidental, indirect, special, consequential, or other damages suffered by the user or any other person or entity whether from the use of the electronic services or products, any failure thereof, or otherwise, and in no event will the State of Alaska's liability to the requester or anyone else exceed the fee paid for the electronic service or product. The current publication may be available on paper. DGGS publications are available as free online downloads or you may purchase paper hard-copies or digital files on CD/DVD or other digital storage media by mail, phone, fax, or email from the DGGS Fairbanks office. To purchase this or other printed reports and maps, contact DGGS by phone (907-451-5020), e-mail (dggspubs@alaska.gov), or fax (907-451-5050). Payment accepted: Cash, check, money order, VISA, or MasterCard.Turn around time is 1-2 weeks unless special arrangements are made and an express fee is paid. Shipping charge will be the actual cost of postage and will be added to the total amount due. Contact us for the exact shipping ammount. see http://www.dggs.alaska.gov/pubs/id/19742 SHP http://www.dggs.alaska.gov/pubs/id/19742 Free download 20101004 Metadata manager mailing and physical

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Fairbanks AK 99709-3707 USA 907-451-5020 FGDC Content Standard for Digital Geospatial Metadata FGDC-STD-001-1998 If the user has modified this metadata file in any way, the user is obligated to describe the types of modifications the user has made. User specifically agrees not to misrepresent this metadata file, nor to imply that changes made by the user were approved by the State of Alaska, Department of Natural Resources, Division of Geological & Geophysical Surveys. http://www.dggs.alaska.gov/metadata/dggs.ext dggs metadata extensions