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• UNSCANNED, OVERSIZED MATERIALS AVAILABLE: ��- 0/6 FILE # / 03 /O To Request any /all of the above information, please contact: Alaska Oil and Gas Conservation Commission 333 W. 7th Ave., Suite 100 Anchorage, Alaska 99501 Direct (907) 793 -1225 Fax (907) 276 -7542 II — o�La of ?It THE STATE Department of Environmental �?�` �' ' °fALASI 1k Conservation Division of Spill Prevention and Response C GOVERNOR SEAN P A R N E L L Contaminated Sites Program Om e. 610 University Ave. ALAB"" Fairbanks,Alaska 99709-3643 RECEIVED Main:907.451.2181 Fax:907.451.5105 FEB 072014 File: 320.38.010 February 4, 2014 A0000 Certified Mail, Return Receipt Requested Article No.: 7012 2210 0002 1216 2391 Wayne Svejnoha BLM—Division of Resources SH S P 014 222 W 7th Ave, #13 Anchorage,Alaska 99513 Re: Potentiall Responsible Party Notice Letter and Information Request NPRA Legacy Wells - General Hazard ID: 26125 Ledger Code: 14339387 Dear Mr. Svejnoha: This letter is to advise you that the Alaska Department of Environmental Conservation (ADEC) has identified the 136 legacy wells within the National Petroleum Reserve in Alaska (NPRA) as potential contaminated sites. Some of these wells require extensive cleanup of oil and other hazardous substances released to the environment. Since you are identified as a current or past owner and/or operator of these sites,please be advised you may be financially responsible or liable for the investigation and /or cleanup of any hazardous substance contamination that might be present. Alaska Statute 46.03.822 establishes who is liable for contamination. Records available to the ADEC indicate that you meet one or more of the following criteria: » owned or controlled the hazardous substance at the time of its release; » own(ed) or operate(d) the property or facility from which the release occurred; » owned or operated property at which the hazardous substance came to be located;and » arranged for transport, disposal or treatment of hazardous substances that were released. Site History From 1944 through 1982 the US Government drilled 136 wells to explore for oil and gas resources in the NPRA. It is our understanding that other federal agencies and some private companies may have operated or managed these sites in the past. We have also been informed that 23 of these well have been conveyed to public and private entities. The ADEC currently lists 14 of the 136 legacy wells on our database of contaminated sites. The Bureau of Land Management (BLM) is identified as the responsible party for the following sites. Wayne Svejnoha 2 February 4,2014 • BLM Cape Halkett Drill Site (File # 300.38.108) • BLM East Simpson#2 (File # 300.38.109) • BLM East Teshekpuk Drill Site (File # 300.38.110) The U.S. Army Corps of Engineers,under the Formerly Used Defense Sites program,is working with ADEC under the Defense States Memorandum of Agreement on cleanup actions at the 11 Umiat test well sites. BLM is identified as the landowner in our records, and as such is identified as a potentially responsible party in addition to the Department of Defense: • Umiat Test Wells 1-11 (File # 335.38.001) The information contained in these files is part of the public record. Our databases are accessible on the Internet at: http://dec.alaska.gov/spar/csp/db_search.htm Additional Actions Needed ADEC sent a letter on July 11, 2013,identifying an additional 15 legacy well sites with confirmed releases (enclosed). As stated in the letter,ADEC recommends that BLM develop a plan to address known, suspected,and unknown releases at the legacy well sites,in coordination with the appropriate regulatory agencies. We expected a response to this letter before now. Please respond to this letter within 30 days. After we receive and review your response we will determine what additional actions will be taken regarding each site with known or suspected contamination. In addition,with your response,please complete and return the enclosed questionnaire requesting more information about past operators. In accordance with Alaska Statute Title 46,ADEC is authorized to provide regulatory oversight for any contamination response efforts initiated by the responsible party. However,if response actions by the responsible party are not satisfactory to ADEC,we may then assume the lead role in the investigation and cleanup efforts. In the event that State response actions are necessary, the responsible parties may be held financially liable for any response actions taken by the State. Alaska Statutes 46.04.010 and 46.08.070 establish cost recovery procedures for certain costs,including oversight activities,incurred by the State in responding to pollution incidents. If you are determined to be a responsible or liable party,ADEC may bill you at a later date for our expenditures associated with this pollution incident. Expenses for which we may seek reimbursement include: Staff time associated with general or technical assistance;work plan review;project oversight;general project management;legal services;interest;travel;equipment and supplies;and any contracting costs. Pursuant to Alaska Statute 46.08.075,the State may also file liens against all property owned by a person who is responsible or liable for State expenditures. Please respond in writing within thirty (30) days from the date of this letter addressing your intended actions with respect to this pollution incident. If you believe someone else is responsible for this pollution incident (e.g.,a past owner or operation of the site) or if you have any questions concerning this matter,please contact Mr. Fred Vreeman at (907) 451-2181. The attached"ADEC Information Request" describes the minimum information expected in your response. Additional information may needed to evaluate the risks and responses required at each legacy well site. Sincerely, Fred Vreeman Environmental Program Manager G:\SPAR\CS\Contaminated Site Files(38)\320 National Petro Reserve Area\320.38.010 NPRA Legacy Wells General\2-2-2014 Letter\PRP Letter All Wells.docx Wayne Svejnoha 3 February 4,2014 Enclosure: ADEC Information Request Concerning Contaminated Sites BLM Legacy Wells Dispute letter date July 11, 2013 cc: Bud Cribley, Director,Bureau of Land Management Steven Cohn, Deputy Director, Bureau of Land Management Jolie Pollet, Branch Chief,Bureau of Land Management Robert Brumbaugh, Geologist,Bureau of Land Management Michael McCrum, Environmental Engineer, Bureau of Land Management Larry Hartig, Commissioner,Alaska Department of Environmental Conservation Lynn Kent, Deputy Commissioner,Alaska Department of Environmental Conservation Kristen Ryan, Director,Alaska Department of Environmental Conservation Lori Aldrich,Program Manager,Alaska Department of Environmental Conservation Steve Bainbridge,Program Manager,Alaska Department of Environmental Conservation Jennifer Roberts, Program Manager,Alaska Department of Environmental Conservation ADEC Response Fund Administration • G:\SPAR\CS\Contaminated Site Files(38)\320 National Petro Reserve Area\320.38.010 NPRA Legacy Wells General\2-2-2014 Letter\PRP Letter All Wells.docx ADEC INFORMATION REQUEST Concerning a contaminated site(s) Re: Legacy Well Sites in and near the National Petroleum Reserve, Alaska (NPRA) Please precede each answer with the number of the question to which it corresponds. Please direct any questions concerning this information request to Fred Vreeman, Contaminated Sites Program, 610 University Avenue,Fairbanks,AK 99709; Phone: 907-451-2181. Thank you for your cooperation. 1. Provide name and company affiliation of the person answering the questionnaire. 2. Provide copies of all studies, reports, and supporting information (including preaquisition assessments and work done on behalf of other parties)which you have knowledge of which address past and/or present environmental conditions at the site. Identify the name, title, address, and phone number of the party(s) who are responsible for preparing the studies or information. Information which has been previously submitted to ADEC need not be submitted again(unless specifically requested in a subsequent communication) if you can provide the name of the office (and name and title of the DEC officer if known)to whom the report was previously provided. 3. Provide a description of any ongoing or planned investigations or cleanup work at the site. Identify the names, titles and phone numbers of the individuals responsible for preparing the studies or information. 4. Provide a description of known releases at the site (date of occurrence, quantity released,type of substance released, etc.) and a description of corrective measures that were taken. Provide information on any suspected releases which may have or are occurring. 5. Describe the nature of past and present operations at the site. In particular, any actions that may have caused the release or threat of release at the site. Describe the physical characteristics of the site including major structures, water wells, fuel or waste storage systems, drainage or septic systems, etc. 6. Provide a list of any permits issued by the Department which relate to activities at the site and a list of RCRA identification numbers (U.S. EPA identification numbers)which may be held. 7. Identify persons to whom you leased all or a portion of the property and describe the nature of their operations. 8. Identify the person(s)who used the site for disposal of substances deposited there, if any. 9. Provide copies of manifests for any hazardous waste and/or petroleum contaminated materials taken to or from the site. 10. Provide a list of persons and their phone numbers and addresses of persons who have knowledge about the use of hazardous substances at the site. 11. Provide information regarding the existence of insurance coverage for damages resulting from releases of hazardous substances and copies of all such insurance policies, both currently in effect and in effect during the periods of activity in question. 12. Describe the acts or omissions of any person, other than your employees, agents, or those persons with whom you had a contractual relationship,that may have caused the release or threat of release of hazardous substances at the site. a. In addition, describe all precautions that you took against foreseeable acts or omissions of any such third parties. 13. Describe the care you exercised with respect to the hazardous substances found at the site. 14. Describe the physical characteristics of the site including structures, wells, drainage systems, etc. 1 � ���� To THE STATE Department of Environmental 4,417: �� a f q T A � Conservation t° 1`�j� Division of Spill Prevention and Response il'I.t Contaminated Sites Program '� GOVERNOR SEAN PARNELL O 610 University Ave. ALAS Fairbanks.Alaska 99709-3643 Main:907.451.2181 Fax:907.451.2155 July 11,2013 Wayne Svejnoha Supervisory Minerals &Energy Specialist 222 W 7th Avenue,#13 Anchorage,Alaska 99513 Re: BLM Legacy Wells Dispute Dear Mr.Svejnoha: The Alaska Department of Environmental Conservation (ADEC)—Contaminated Sites has reviewed the National Petroleum Reserve in Alaska: 2013 Legacy Wells Summary Report dated February 2013, containing updated information on the status of the 136 Legacy Wells located in the National Petroleum Reserve— Alaska (NPR-A),and the draft National Petroleum Reserve in Alaska:2013 Legacy Wells Strategic Plan dated May 2013. ADEC has also reviewed the response by the Alaska Oil and Gas Conservation Commission (AOGC). We concur with the response by AOGC and have no further comment regarding the priorities. We do have comments about the investigation and cleanup plans presented in the report. With this letter we are outlining regulatory requirements related to the environmental work that is proposed and required as part of these cleanups. ADEC is concerned that the 2013 Legacy Wells Strategic Plan prepared by the BLM does not include either assessment or the contingency for assessment of known,likely,or unknown but possible contaminant releases. In addition,BLM plans for surface cleanup of these wells should be made clear in the plan. At least one of these legacy wells has extensive PCB contamination and has resulted in a multi-year cleanup totaling tens of millions of dollars. At others, solid waste disposal practices have resulted in releases to the environment with estimated cleanup costs in the hundreds of millions. Known releases documented in the records we reviewed include crude oil,gasses,refined oil and fuel, drilling fluids that include various organics,metals,and other chemicals,and unknown contaminants from drums and other containers observed to be damaged and abandoned at the various well sites. There are 13 legacy well sites with known releases currently on the DEC contaminated sites list. Many of these are in the process of being addressed,cleaned up,and closed. From our limited records review there are 15 additional legacy well sites with confirmed releases. These should be prioritized for initial records reviews and then I added to the BLM contaminated sites list under our cooperative agreement. Suspected releases include fuel releases from operations,storage,and fuel spills at the sites,impacts to various surface water bodies from spilled fluids during drilling and breaches of containment at reserve and flare pits,continued surface runoff from drilling fluids uncontained at several sites,and down-hole substances that were ejected from the holes over time or during blowouts or drilling operations. Wayne Svejnoha ? July 11,2013 The,BLM plan to address these known,suspected,and unknown releases at legacy well sites is notably absent from the documents presented to date. The three primary regulatory agencies that need to be involved in the plan are ADEC—Contaminated Sites,Alaska Oil&Gas Conservation Commission,and ADEC—EH/Solid Waste. Other agencies will need to be consultedas well. Below we provide recommendations for a coordinated plan using the Uniform Federal Policy for Quality Assurance Project Plans (UFP-QAPP) that will involve all of the regulatory agencies in one coordinated manner. This will allow BLM to address these sites in a consistent and coordinated project which fulfills all of the regulatory requirements so that the sites do not need to be re-visited in the future when they are closed after this project. Attached are our comments on each specific well. The acronyms used on the list include terms that are typically used in a CERCLA type investigation however they are also suitable for investigations conducted under the State of Alaska cleanup rules. These include the following; Historical Records Review (HRR) This is recommended for almost all of the well sites. Much of the information required for these reviews is already contained in various reports and appendices or in BLM files. The Historical Records Review should document the type of releases that might have occurred from drilling operations as well as historical use of the site,and should capture all available information on the drilling fluids used and any product produced or released. Preliminary Assessment(PA) This is recommended for almost all of the well sites. A Preliminary Assessment is a limited scope investigation that provides an assessment of information about a site and its surrounding area to distinguish between sites that pose little or no threat to human health or the environment and sites that require further investigation. The PA is a CERCLA defined document and typically does not require sampling. Site Inspection(SI) If the PA recommends further investigation, then an SI is necessary. The SI is a CERCLA defined document,and it is analogous to an initial report of contamination under state cleanup rules. On some legacy well drillings sites it is evident now that an SI is required just from a review of the reports. An SI investigation typically includes the collection of samples to determine what contaminants are present at the site and whether they are being released into the environment. An approved site specific workplan is required under both CERCLA and 18 AAC 75 prior to SI sampling. The SI typically is not intended to develop a full site characterization,but is limited to determining the presence or absence of a release. If contamination is found after completion of the HRR,PA,and SI then a RI/FS under CERCLA,or a Site Characterization-Report and cleanup-planitnder 18_AAC_75_is rewired. DEC recommends that BLM incorporate into the strategic plan the processes outlined in this letter. A team of agencies composed of AOGC,DEC-CS,EPA as required,and DEC-EH should address regulatory and technical requirements for these well closures. By cooperating and working together with the regulatory agencies BLM will save time and expense,and regulatory uncertainties will be avoided. The strategic plan should reference a project to prepare a generic workplan. DEC suggests that BLM utilize the generic UFP-QAPP workplan format for the required environmental work. If properly prepared,the workplan could encompass most of the investigations and cleanups required at these sites over multiple years. At other multi-site projects we have found this to be an effective way to reduce uncertainties and tisk in these types of investigations. A very small site specific FSP could then be developed as BLM approaches each drilling site. Regulatory decisions made during workplan development would provide more certainty in the planning process for cleanups. GASPAR Facilities\Civilian Fcdcrrl Agencies\DOl\NI.AI\Projects\Legacy Wei1l\7 11 13 Letter to l.l.hl on 1.egacy Wclls.docx Wayne Svejnoha 3 July 11,2013 Please review the attached list of specific sites. If you have any questions,please do not hesitate to call me at 907-451-2181 or by email at fred.vreeman@alaska.gov. I look forward to working with you as the Federal Government fulfills its requirement to clean up these well drilling sites in Alaska. Sincerely, Fred Vreeman Environmental Program Manager Enclosure: SPAR Response with Legacy Wells cc: Bud Cribley,State Director,Bureau of Land Management Steven Cohn,Deputy State Director for Resources,Bureau of Land Management Joke Pollet,Branch Chief,Bureau of Land Management Robert Brumbaugh, Geologist,Bureau of Land Management Michael McCrum,Environmental Engineer,Bureau of Land Management Cathy Foerster,Commissioner,Alaska Oil and Gas Conservation Commission Larry Hartig,Commissioner,Alaska Department of Environmental Conservation Kristen Ryan,Director,ADEC Division of Spill Prevention and Response Steve Bainbridge,Program Manager,ADEC Contaminated Sites Program Jennifer Roberts,Program Manager,ADEC Contaminated Sites Program • G:\SPAR\CS\Federal Focilitis\C,icilian Fcxlcrsl Agencies\DOl\HL11\Projects\I.cgacy Wells\7 11 131.4.tter to 111..11 on Lq cy Wclls.docx m 2 t1 a,a� my N N m .1= v y V m m m 01 01 m co m O.A m 10 01 m m 10 m 0 m -co R `� en0 < acc C C C C 17e 2 g gg 0 0 0 a du z°H 0 0 v 0 0 a 0 0 0 0 m pm m c 2 0 .0 L .0 .oc a = L .0 0 0 0 L a - . c `f L L L z io ,to C C C ,c A Q_C1 a C V C C C c C C C L - m 1C �i a m m m a7 O y '_, a) 5 G m 91 a) al 0 N m , O y J ,h -2 -0 v v .5 g c :° g�g v us a v v E p 2 c U c c U, U d o V U 3 c = t = = E O Z �O r a.n .5 .rs c y C tU� c a 2 c c CO c o c c 01 S C ac a . 0 Oe o z. c c c 0 4 Fc co C c rE 'E g •e 'c 'C 4 i >= 0 am C 0 0 c v . 3wa 'o Cl '0 a '0 '0 '0 0.0 a C 0o C • C C C C C n C C c c c Z Z '.e:0a ,a , m n9 n1" om • a 2 a a <C s 8 ?3 o 724-22V-132 - �- ., 4 - a-- - o- Q — Qc circ L S y c c tc -off i° c a C c> o (nv)— o- g o 5 3 'E 3�2 33 •'c 3 - 1 12 •c 3 3 ' '3 c 3•� 3 3 ! m d � 6 a. 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O 2 z Z Z Z 2Z 2 Z g cl U a C a) Q) 3 0 o o a 1 U) 0) 0 V) N 61 al 2 al = Li' t =Z .c Z E Z co m m g' r s m e i z ` z z z z 0 t� o > > DD > > > pp g,— M 31') e) 0 _ Y w ; a! ak # ik YC 3 E C 0 07 Ot t h tipt� Zell O ,43 R CO CO CO m m m m Z a Oin' L L L t S3 a 3 w � (2 U, COO v) v) 3 T - - ���/ '4 THE STATE i�r,'Er2',r,ME , L 'ate O� l ltd \ Conservation _?dM L1 Division of Spill Prevention and Response e Contaminated Sites Program GOVERNOR SEAN PARNELL ®F ++,m TM- p. 610 University Ave. ALAS1' Fairbanks, Alaska 99709-3643 Main:907.451.2181 Fax:907.451.2155 July 11, 2013 ' • Wayne Svejnoha Supervisory Minerals & Energy Specialist SCANNED MAR I 1 2014 222 W 7th Avenue, #13 Anchorage,Alaska 99513 Re: BLM Legacy Wells Dispute Dear Mr. Svejnoha: The Alaska Department of Environmental Conservation (ADEC) —Contaminated Sites has reviewed the National Petroleum Reserve in Alaska: 2013 Legacy Wells Summary Report dated February 2013, containing updated information on the status of the 136 Legacy Wells located in the National Petroleum Reserve— Alaska (NPR-A), and the draft National Petroleum Reserve in Alaska: 2013 Legacy Wells Strategic Plan dated May 2013. ADEC has also reviewed the response by the Alaska Oil and Gas Conservation Commission (AOGC). We concur with the response by AOGC and have no further comment regarding the priorities. We do have comments about the investigation and cleanup plans presented in the report. With this letter we are outlining regulatory requirements related to the environmental work that is proposed and required as part of these cleanups. ADEC is concerned that the 2013 Legacy Wells Strategic Plan prepared by the BLM does not include either assessment or the contingency for assessment of known,likely, or unknown but possible contaminant releases. In addition,BLM plans for surface cleanup of these wells should be made clear in the plan. At least one of these legacy wells has extensive PCB contamination and has resulted in a multi-year cleanup totaling tens of millions of dollars. At others, solid waste disposal practices have resulted in releases to the environment with estimated cleanup costs in the hundreds of millions. Known releases documented in the records we reviewed include crude oil,gasses,refined oil and fuel, drilling fluids that include various organics,metals, and other chemicals, and unknown contaminants from drums and other containers observed to be damaged and abandoned at the various well sites. There are 13 legacy well sites with known releases currently on the DEC contaminated sites list. Many of these are in the process of being addressed, cleaned up, and closed. From our limited records review there are 15 additional legacy well sites with confirmed releases. These should be prioritized for initial records reviews and then added to the BLM contaminated sites list under our cooperative agreement. Suspected releases include fuel releases from operations, storage, and fuel spills at the sites,impacts to various surface water bodies from spilled fluids during drilling and breaches of containment at reserve and flare pits,continued surface runoff from drilling fluids uncontained at several sites, and down-hole substances that were ejected from the holes over time or during blowouts or drilling operations. Wayne Svejnoha 2 July 11, 2013 The BLM plan to address these known, suspected, and unknown releases at legacy well sites is notably absent from the documents presented to date. The three primary regulatory agencies that need to be involved in the plan are ADEC —Contaminated Sites,Alaska Oil& Gas Conservation Commission, and ADEC —EH/Solid Waste. Other agencies will need to be consulted as well. Below we provide recommendations for a coordinated plan using the Uniform Federal Policy for Quality Assurance Project Plans (UFP-QAPP) that will involve all of the regulatory agencies in one coordinated manner. This will allow BLM to address these sites in a consistent and coordinated project which fulfills all of the regulatory requirements so that the sites do not need to be re-visited in the future when they are closed after this project. Attached are our comments on each specific well. The acronyms used on the list include terms that are typically used in a CERCLA type investigation however they are also suitable for investigations conducted under the State of Alaska cleanup rules. These include the following; Historical Records Review (HRR) This is recommended for almost all of the well sites. Much of the information required for these reviews is already contained in various reports and appendices or in BLM files. The Historical Records Review should document the type of releases that might have occurred from drilling operations as well as historical use of the site, and should capture all available information on the drilling fluids used and any product produced or released. Preliminary Assessment (PA) This is recommended for almost all of the well sites. A Preliminary Assessment is a limited scope investigation that provides an assessment of information about a site and its surrounding area to distinguish between sites that pose little or no threat to human health or the environment and sites that require further investigation. The PA is a CERCLA defined document and typically does not require sampling. Site Inspection (SI) If the PA recommends further investigation, then an SI is necessary. The SI is a CERCLA defined document, and it is analogous to an initial report of contamination under state cleanup rules. On some legacy well drillings sites it is evident now that an SI is required just from a review of the reports. An SI investigation typically includes the collection of samples to determine what contaminants are present at the site and whether they are being released into the environment. An approved site specific workplan is required under both CERCLA and 18 AAC 75 prior to SI sampling. The SI typically is not intended to develop a full site characterization,but is limited to determining the presence or absence of a release. If contamination is found after completion of the HRR,PA, and SI then a RI/FS under CERCLA, or a Site Characterization Report and cleanup plan under 18 AAC 75 is required. DEC recommends that BLM incorporate into the strategic plan the processes outlined in this letter. A team of agencies composed of AOGC, DEC-CS,EPA as required,and DEC-EH should address regulatory and technical requirements for these well closures. By cooperating and working together with the regulatory agencies BLM will save time and expense, and regulatory uncertainties will be avoided. The strategic plan should reference a project to prepare a generic workplan. DEC suggests that BLM utilize the generic UFP-QAPP workplan format for the required environmental work. If properly prepared, the workplan could encompass most of the investigations and cleanups required at these sites over multiple years. At other multi-site projects we have found this to be an effective way to reduce uncertainties and risk in these types of investigations. A very small site specific FSP could then be developed as BLM approaches each drilling site. Regulatory decisions made during workplan development would provide more certainty in the planning process for cleanups. Wayne Svejnoha 3 July 11. 2013 Please review the attached list of specific sites. If you have any questions,please do not hesitate to call me at 907-451-2181 or by email at fred.vreeman @alaska.gov. I look forward to working with you as the Federal Government fulfills its requirement to clean up these well drilling sites in Alaska. 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N m O 0 0 C O d N a) U 2 a c F a 3 V c w 3 F- d z z z z Z z z co co 2 3 S x i x x II � _N O H N J L C) 0 j 0 C C C C C 0 w 0 N C C C C C C >, = R ; >- a) Z D D D D D D >- m a°) !( o N v 3 A + ,O a) to as o C a) M 0 0 0 0 0 0 0 0 CL O la) C p C C C C C C C C Z co Z Z Z Z Z Z Z Z Q' to r- C a) CL Q r Cl. In CD 0- 0 > C C C C C C C C U Z Q z z z z z z z Z Y N_ ix M T*- N z▪. 2 0 C C C C C C CD C C C C m a z z z z z z z z z z rn o 6 o O O 0 13 C O m0 CO 0 CO 0 0 m C 0_ O. O. O. O. (6 0 0 0 0 0 J CO CO U) CO a 2 .c .0 .0 .0 .c m 2 g 0 0 o 0 0 g co co J Z z z z Z J co co`) 0 2 co Q CO CO CO CO CO 0 a. O j CO U) CO CO CO I!) CO CO CO ik r- _') Lo 0) O j * * * * * * a E c t 2 t t 0 2 2 0 4t Z d a) a CO CO m CO CO m c. 3 I" .0 .0 .c .0 .0 .c m 3 Q N 00 0 00 0 0 o R w -i CO CO CO CO CO CO • FOR OFFICIAL nESTRI It 4 1 • _ • t *COPY NC57-27" ( (.1'ho ca CI 41 saiRva'r En77 Cil Unit laboratexy Fairbanks, Alaska 7OF 'c.10R7.] W5T EC), VS (Lit"rolofic pescriptior) Core .PqaPh Recovery De,13k=„4, 1 100-110 VO 4'S" clay, medium light tray, 'Upper 1 foot of the inter- val iv, silty and corctains rounded pebbles - primarily of blr,ck cheat ens gray limestone pebble inches in diameter; non-caloargous. Also contain few small shall frwente, S Silt, medidm lipht 4rtiv, moderately hard, are:Macao:7.1- also sandy, contain .L subrounded to rouned granules and pebbles (up to - inch in diameter generally amallar) of black ckert: noa-calcareous, a few amAll whits shell fragmeals, Gdbik foraminifers present, 2 110-115R 0 %tiro recovery co of a medium gl'ay, very hard, dense, non-caloareoLs claystene concretion(?) The contact Foliwoon the (ubik and Crotaonolle probably i somebere 7- ietween 110-115 ft, The olsTetene 5 n ekaraoteriltio of 1.13 Gubik, 115-120 4'0° 57ra1y cay 1ijh gay to medium grsy, :k1. cleavage; nort-calcaxeous, Vicrefeseile bent. 4 SW-210' 2'tr Slmly clay, li#e4 gla,y to medium li&t h&Aly cleavage, also n few medium light gray silty - narto.s, AaternatIon of 'beds t a few millimeters thickness o eligh t. difference of color, rather like varves in the last foN inches of the interval i non-calcareous; 'beds seproximatA.7 flat-2ying :%:.orofossilo absent, 21C-211' Writ' &may clay, ae abovc :I.crofossils absent. 6 aDo-apv loioo 10 abovo alp 12, One radiolarian 400-4),5 Sbay clay, li6ht grey to medium light gray, rathcr aeft, fair thal lcsvage, clevn,IS'e Walloas SOTL 41..-0 50 inorofoGeis absedt. F.3 4oa-intr 2)0 S:Isly clay an abo?s, rare micaceous pnrtings eilty laminae, lighf gray; nom-osleaus; 3 ncrofoosils abut riko • .— 1CP • • • Care Ti_ecoverF Dqsoription 9 408-410' 2'0 1 As , ibove, dip 1()e 010 Clay, very light gray, softer than clays above, . a faw small flecks of mica, resembles the beatonito found in some of the earlier Simpson core tests, howovor, it is not waxy and doee rot swell an nn- usual amount in water. No glass particles were noted with petrographic microscope; non-caloarsous, 0 Same as first interval of this core. 'foils absent. 10 500-510 10 5 Clay or probably mostly drilling mud, medium light gray. 5 Shaly clay and clay, light gray to medium light gray backly cleavage; non-calcareous. Two incbts of hxrd, denso, clay ironstone, medium light yellowish exay, very calcareous in part at 508t; dip Microfoseils absent. 11 800-810 100" Simistono, medium light olive gray, nearly uneonso1i- datvagy fine crains)d, vabangular to subrounded, estimated 90% white aud clear quartz, balance of material is made up of highly altered rock or dark mineral particles, chlorite and biotitos; uon-calonveo. Nicrofossils absent. 12 700-?10 10 Taaly clay, msdium light gray, backly cleavage, rare laminae and partings of very fine santl, The thickest of these an layere--2° thick—is approximately 706 and contains numerous coal particles in addition to the tart s as described in Core 11. Three grayish yellow, donso, clay ironstone concretions at 70V, 707, and 709 each about an inch thick; non- calcareous; dip 3 Nicrofossils absent. 13 800-810 9 Sandstone, medium light gray, practically unconso15.- . dated, silty to very fine grained, primarily white and clear quarts, oubangular to sabromded, also su yellou quarts (), muscovite and biotite. Several laminae with an abundance of vitreous black coal partic/se—these particle s are slightly larcer than the rant of the sand grains. Greyish yelbv clay ironstone concretions at e09c ane. at 31W? non-calearsous. • Microfossile absent, 14 9OO..910 1DO ndstone, medium light gray. practically unconf- solidated, fine grained, primarily sutangular white quartz, some muscovite, chlorite and darker minerals or rock grains; non-caIcareous. Microfosoilo very raro. • • C0 Depth lleco ere eserintion 35 1000 -10' l ?dOa g a'' Silt ,one,, med em light gray, very soft and friable, al U''t entirely write quartz; non- calcareous. Laeeidentalium and various types of paiecypod.s (including Ino ) at 1003'. 4°6 Shaly clay and clay, medium light gray, rather poor ebaly cleavage, silty. A 2 thick layer of dull black, low grade coal or lignite at 1006' which has lines suggesting original plant structere, contains finely disseminated pyrite. Immediately ediately below the coal is a layer of pelecy ord shell fragments; clay is non - calcareous. 1 °p Interbedded silt and clay. Thin Dyers of coal at 1010 dip est. 3 M3 crofooeils rare. Lithologic Description - Ditch This description is synthesis ^d from the :,'.shed cuttings, the well geologi st' e resort and the electric log. Interval �a scrl�ti an 0®10 Tundra, ice and clay, medium light gray, also some varicolored sand, eubangezlar to aubrounded. Pelecyod shell fragments. Gabik forams rare, 10 -20' Sand, medium light grew with yellowish cast, very . fine to very coarse, subrounded to subangular, varicolored quartz, dark chart and carbon- ized wood or very low grads coal. Granules and pebbles of yellow sandstone, yellow, red and green quartzite and black chart, x elocypod fragments common. on. C-uhi1 forams rare. 20_944 Sand and clay. 40.1 00 Sand, medium light gray, fine to very coarse, granules and pebbles. Microfosstla very rare to absent. Pelecypod .fragments rare, 100 -110° Core 1 • 11(1®115 Cow 115 -120' Core 3 120.140 Clay, light gray to medium light gra,. 140 -150' Limestone, medium light gray to m edi± am gray, 13 at apuro irately .y� 140 ft., clay and. some pyrite. 150='200° Olay, very little pyrite. 2OOE -21W Core 4 210 -218 Coro 213 -250 Clay, light gray to nadiem light gray. 250 -p260° Limestone, medium dark gray and eia'stare, light olive gray. 28Om300 a Clay 300 -310 Si r q_l 310370' Clay 370-300 Clay, and a -rery mall amount of white crystalline calcite. 360-400 Clay, some light gray silt. 400 -405 gall 405 -4O Cow 3 • • Intcoval Doscrkedon 4 08-410 Core 9 410-500° Clay, light gray to medium light gray. 500-510 Core IA 510-54o1 Clay 540-550 Claystono, medium gray, small amount, very slightly calcareous, alo Clay, 550-570 Clay 570-590' Sand, medium light gray, fine, primarily white and clear quartz', rare biotite ulates, small amount of dull black coal 580-590, 590-600 Sand and clay 600-610' Core 11 610-620' Sand, medium light „Tray, fins, mostly white quartz, small amount with very calcareous cement. Also claystone (concretion?), medium light gray. 620-640' Sand, very fine, almost entirely quartz. Very rare Inoceramus -oriams 630-640'. 640-660' Clay and sand, a little coal 650-660 660-690' Sand, medium light gray, subangular to sUbrounded, fine, clear and whit. quartz 8570, coal and dark minerals 10%, mica 690-700/ Clay and sand, clay ironstone, yellowish gray 700-710° 2 710-730; Clay and sand, clay ironstone concret:0.on and very rare Inocora•us prisms 720-730 730-7E0 Sand, fine, primarily clear and white quarts 750460 Clay 760-770° Sand and clay 770-800' Sand, fine, quartz plus a little Hark chart and soma fra7ments of coal, darker grains slightly larger than ouartz, mica 800-810 Core 13 810-860 Sand, medium light gray, very fine to fine grained, small amount of yellow quarts (?), also small amount of very calcareous sandy siltztone 030-840 medium gray. 860-870 Clay and sand, Laev,dentalium fraopents common S70-880 Sand and clay, medium light gray 880-890 Clay and sand, Lazzidentalium 890-900 Sand, medium light f vary fine to fine, white quarts 90 sumo dark chart, selbangular to subrounded, Laevidentalium 900-910 Cora la 910-20 Sand, Laevi dentalium 920-950 Sand, grading downwards from fine sand to silt to clay. 950-990 Clay, clay ironstone 960-970 Laevidontalium 970-980". c" Sand, very fine to silt, annzozGTaF967713ite and clear quartz, 10 dark constituents (brown, gray and black), some oyrite 1000-1010 Core 15 1010-1020' Clay, silt, sand with mica, nyrite, Lithology of the inocoramus-ammonite zone was not recognized in this test. Fish fragments were found (very rare5 at 270-290 340-350 360-370', 510-520', 590-600 630-640 850-860 910-920, and 900-940 No oil or ga3 shows encountered, 7firet.;n41-0,-,4 Florence Robinson, Geologist January 17, 19M 4
