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o>r r • THE STATE Department of Environmental 011-1LASKL'1 GOVERNOR SEAN PARNELL RECEIVED FEB 0 7 2014 February 4, 2014 A0GCC Certified Mail, Return Receipt Requested Article No.: 7012 2210 0002 1216 2391 Wayne Svejnoha BLM — Division of Resources 222 W 7th Ave, #13 Anchorage, Alaska 99513 Conservation Division of Spill Prevention and Response Contaminated Sites Program File: 320.38.010 SCANNED 0 2 2014 Re: Potentiall Responsible Party Notice Letter and Information Request NPRA Legacy Wells - General Hazard ID: 26125 Ledger Code: 14339387 Dear Mr. Svejnoha: 610 University Ave. Fairbanks, Alaska 99709-3643 Main: 907.451.2181 Fax: 907.451.5105 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 0 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: C 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.httn 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 Sveinoha Enclosure: 0 3 • ADEC Information Request Concerning Contaminated Sites BLM Legacy Wells Dispute letter date July 11, 2013 February 4, 2014 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 GASPAR\CS\Contarr nmted Site Files (38)\320 National Petro Reserve Area\320.38.010 NPRA Legacy Wells General\2-2-2014 Letter\PRP Letter All Wells.doe% 0 0 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. THE STATE July 11, 2013 'ALASKA GOVERNOR SEAN PARNELL Wayne Svejnoha Supervisory Minerals & Energy Specialist 222 W 7th Avenue, #13 Anchorage, Alaska 99513 Re: BLM Legacy Wells Dispute Dear Mr. Svejnoha: Department of Environmental Conservation Division of Spill Prevention and Response Contaminated Sites Program 610 University Ave. Fairbanks, Alaska 99709-3643 Main: 907.451.2181 Fax: 907.451.2155 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 Alaslm. 2013 Legacy Weiss 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 ACIGC 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 arc 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 of 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 Waited 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. 1 Wayne Sve noha ? July 11, 2013 Y The.BLN-1 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 fu=e xvhen 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) 'chis 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 Sl 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 CERCL-A 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 Characte-rizatiowlteportandcleanup-Alas,under-l-fi-AAC7iis`required. -- ----- - -- — --------- - DEC recommends that BLM incorporate into the strategic pian 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. G:\SPAR\CS\federal F2cilitie3\Ci%ih2n 1-cdcrrt Agr=ics\DOl\B[.Ni\1'roiens\lxgAey Wells\7 11 13 Luter to KIN on lxbxy wells.doex Wayne Svejnoha 3 0 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, y' 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 Jolie 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 GASI'AR\CS\Fedcrrl Fo61ibLy\Gvi6n Falctul AgcnnCs\DOI\BI.N1\Proitcts\lA'6.1' q W03\7 11 1314tur to Aim\I on Ug2cy Wclls.doex Well Name operator I RP I Land Simpson Core Test #5 1! Na 1 BLM Simpson Core Test #6 US Na I BLM Simpson Core Test #7 us Na 1 Bl. M Sin son Core Test 98 US Navy 113LM Si son Core Test #9 U5 Na I BLM Sinwson Core Test #1f) U.S Navy! BLM Core Test #11 AOGCC Subsurlaca I BLM Core Test #12 FUSNa a I BLM Core Test #16 a I BLM Core Test #17 US Na 1 BLM Core Test 018 US Na I BLM Core Test #19 US Na 1 BLM t Core Test #20 US Navy 1 BLM i Gore Test #21 2S Na 1 BLM I Core Test #22 US Na 111•LM I Core Test dnlf fluids left in hole i BLM Core Test �#2vy I BLhA n CareTest #25 US Na Y I BLM K Core #1 US Navy i BLM 1 -t- *1 SPAR Response with Legacy Wells Lisl.xlsx 2013 Risk Ity CSP Status I Fito tllHazid Rolea5e7 Nnne f+lone IYOMWil Low RNooe ane None Unused, Unused, I None Unused, i None Uncased, None None None None (None Unknown Unknown Page 1 of 14 •I AOGCC Subsurlaca AOGCC Surface SPAR W arkgroup Notes Status Status Need HRR, PA, S1 no data no data Need HRR. PA. SI no data no data Need PA ind drill fluid assessnsenl & workplan drillin 11uids left in hole no data Need PA ind drill fluid assessment & work an drilling fluids left in hole no data Need PA incl drill Ifusd assessment & work Ian dnlf fluids left in hole no data Need PA ncf drill fluid assessmcnf &work Ian dnllxs fluids tett rn hale no data well skelch provided by Need PA ind drill fluid BLM not consistent with assessment & work Ian AOGCC or BLM data no data Need PA ind drill fluid assessment & work Ian dnflin fluids left in hole no data Need PA and 51 ind 13611 fluid assessment. workplan rid sampling stressed debfis, partially as blowout and fire rove elated site areas Need PA incl drill fluid assessment & workplan dn lling fluids left in hole no data geed PA ind drill fluid assessment & wOTk Ian drij I ing fluids teff in hole no data Need PA incl dfifl nutd assessment & work Ian drillin fluids left m hole no data Need PA incl drill fluid assessment & work Ian drillin ituids left in hole no data Need HRR. PA, SI no data no data Need PA incl drill fluid assessment & work Ian drillin fluids felt in hole ria data Need PA incl dnll fluid assessment & work larx drillin fluids left in hole no data Need PA incl drill fluid assessment & work Ian drillin fluids Teff in hole no data Need PA ind dnll fluid drflfing fluids and ball assessment & Workplan peen hammer left in hole no data overshot, drill collar, rock revegelated —131 Need HRR, PA bit, and N -reds left in hole can't find it Review Report as PA. No evidence of sheen, stressed veg, or drilling Not abandoned, waste on surface. Veg ----_— , ,raw,, plunaed to surface site not cleared •I SPAR Response with Legacy Wells LisLxlsx Page 2 of 14 is • vi nce o BLM 2013 Risk Historic AOGCC Subsurface AOGCC Surface Well Name Operator I RP I Land Mgr Priority CSP Status file #IHazid Release? SPAR Workgroup Notes Status Status plugging operations inadequate and Wellhead tell as Umiat 43 US Navy I BLM I FUDS None pending dos 335.38.00113092 Yes. see file 'Plugged by BLM in 2004 incomplete historic site? plugging operations inadequate and Wellhead left as Umiat #4 US Navy I BLM / FUDS None pending dos 335.38.001!3079 Yes, see file Plugged by BLM in 2004 incomplete historic site? plugging operations inadequate and Wellhead left as Umial 98 US NaMy I BLM I FUDS None pendinq dos 335.38.001/3D81 'Yes, see_ _file Plugged BLM in 2004 incomplete historic sile? plugging operations inadequate and Wellhead left as Umiat #1'0 US Navyj BLM_I FUDS None pendingdos 335.38.00113082 Yes, see fila Plu ed by BLM in 2004 incomplete historic site? Need HRR, PA, SI with sampling. Drilling mud assessment. Surface Plugged to 7868'. Drilling Cleanup. Photos - evidence mud and diesel to Awuna #1 USGS I BLM Medium None None Yes of erosion into lake surface. > 100 _Pylons Need HRR, PA, SI with sampling. Drilling mud Wood , metal, assessment. Surface Plugged to 2039'. Diesel plastic debris. Fast Simpson #1 USGS I BLM Low None None Yes Cleanup. to surface. >10D Pylons Need HRR, PA, SI with Wood and metal Drilling mud assessment debris. Pylons - Photos straw areas of no Plugged to 2047'. Diesel Tankage for lk ' #1 USGS / 8LM Low None None Yes ve elation. to surface. flammable fluids Need HRR. PA, SI wdh sampling. Drilling mud assessment. Surface Plugged to 1400'. Drilling Wood and metal Koluktak #1 USGS I BLM Low None None LYes Cleanup. mud & diesel to surface debris Pylons Need HRR, PA, SI with sampling. Drilling mud assessment. Surface Plugged to 1894'. Diesel Wood and metal Ku am 91 USGS I BLM Low None None Unknown Cleanup. to surface debris. Pylons Need HRR, PA, Sl with sampling_ Drilling mud assessment_ Surface Plugged to 4464'. Drilling Wood & metal Kuyanak #1 USGS I BLM Low None None Yes Clean mud & diesel to surface debris. Pylons Need HRR, PA, SI with sampling. Drilling mud assessment. Surface Cleanup. Photos show Plugged to 1840'. Diesel Plastic and metal Lisburne 41 USGS I BLM Low None None Yes stained soil to surface debris. Need HRR, PA, SI with sampling. Drilling mud assessment. Surface Plugged to 8192'. Drilling Wood and metal North Iii ok $1 USGS I BLM Low None INone Yes Cleanup. mud & diesel to surface debris - Page 2 of 14 is • Well Name Peard South Meade #1 1 RP 1 Land 1BLM BLM #1 4USGS ! BLM SPAR Response with Legacy Wells Usl.xlsx ;013 Risk &W CSP Status File XlHazkl T Page 3 of 14 AOGCC Subsurface AOGCC Surface WAR Workgroup Notes Status r Status � deed HERR, PA SI with iampling. Dining mud rssessment- Surface ;leanup. Site photos show areas of stressed iegetalion. No issues Plugged to 2232'. Diesel Wood and metal soled in USGS re ort. to surface debris. Pylons Need HRR, PA, SI with sampling_ Drilling mud assessment Surface Plugged to 2026'. Diesel Wood and metal Cleanup. to surface debris. P Ions Add to She list. Need HRR, PA, SI with sampling. Drilling mud assessment. Surface Cleanup. Od reported bubbling to the surface within reserve pit in 1982. Oily residue and sheen observed adjacent to east side of reserve pil, down hole material at the Plugged to 1875. Diesel Wood and metal surface to surface debris. P ons Add to Site list. Need HRR, PA, S) with sampl'uig. Drilling mud assessment - Surface Cleanup. Reserve pit berm had breaches anowirrg water to exit. Oil - stained sediment was observed above the Plugged to 1478'. Diesel Wood and metal waterline of the I. to surface debris. Site photos may show hydrocarbon sheen on Plugged to 2600'. Drilling Wood and metal water in well cellar mud & diesel to surface debris. Pylons Add to Site list. Need HRR, PA, SI with sampling. Drilling mud assessment. Surface Cleanup. Berms have been breached an allow water to flow out of reserve piUllare pit. Rising bubbles of ail observed in Hare pit 1484. Photos Show Plugged to 1825'. Diesel Metal debris. ra.. v-1 v.nnnralinn to Surface ... 0 •I SPAR Response with Legacy Wells Lisl.xlsx Page 4 of 114 0 0 vi encs o BLM 2013 Risk Historic AOGCC Subsurface AOGCC Surface Well Name Operator 1 RP f Land Mgr Priority CSP Status File #fHazld Release? SPAR Workgroup Motes Status Status Need HRR, PA, Sl wrlh sampling. Drilling mud assessment Surface Cleanup. Breaches in berm allow water to flow into and out of reserve pit, sheen on Plugged to 2700' Diesel Wood and metal West Dease #1 USGS l BLM Low None None Yes surface water in well cellar to surface debns. Pylons Add to Site list. Need HRR,. PA, SI with sampling. Drilling mud assessment. Surface Cleanup. Water flows into the pits through breaches on the eastern berm and out of the pits through breaches on the northern and western berms. Downhole material Plugged to 228'9'. Drilling Wood and metal South Harrison Bay #1 USGS f BLAB Low None None es Present at surface mud & diesel to surface debris. Add to Site list. Need HRR, PA, SI with sampliing. Drilling mud assessment. Surface Cleanup. Stressed vegetation noted and apparent in site pholos. Plugged to 2443'. Drilling West Fish Creek #1 USGS 1 BLM Low None None Yes Drilling mud around well mud & diesel to surface Pylons Need HRR, PA, SI with sampling. Drilling mud assessment, Surface Cleanup. High TPH Plugged to 1977'_ Drilling wellhead sticking concentrations underneath mud under plugs. Diesel up. Wood debris. Fast Simpson #2 USGS 1 BLM I Low _ Active 300.38.10912691 Yes, see file the rig inundation to surface Pylons South Barrow 94 US NavyiNorth Slope Bono None None None Unknown Need Surface Status completed gas well - no data South Barrow #5 USAF - BLM Unknown None None None. Unknown Need Surface Status completed gas well no data South Barrow #& US Na /Norlh Sto Burg None None None Unknown Need HRR, PA, St no data no data South Barrow #9 US NavyfNarih Slop2 Boro None None None Unknown Need HRR, PA, Sl no data no data _ South Barrow #10 US Navyfflorlh Sto Bora None None None Unknown Need Surface Status com ted gas well no data South Barrow It12 US Na /North Slope Baro None None None Unknown Need HRR, PA. Sl no data no data BLM well skMh not consistent with AOGCC South Barrow #14 US NavyMorth Sloe Boro None None one Unknown Nsed HRR. PA, St data no data Need PA ind drill fluid well left filled with drilling South Barrow #16 US NavyiNotih Slope Bora None None None Unknown assessment & workplan mud and diesel no data Need PA incl drill !turd tubing in well. no perfs, Soulh Barrow 017 US Na /North Sloe 13ora None None None jUnknown assessment & work fan I unknown fluid, I no data Page 4 of 114 0 0 SPAR Response with Legacy Wells Lisl.xisx Page 5 of 14 •I E CYfuu .v v AOGCC Subsurface A Surlaco TEHILM T013 Risk CSP Stilus File #IHaaid Historic Rekeasa7 SFAR YUnrkgroup Nates 5latus at US $1<ntus Well Name flperatar f RP f Land Mgriority Unknown Need Surface Status corn feted as well no data 5aulh Barrow #18 US Na INorlh Slo a Bora None None None Unknown Need HRR, PA, St no data no data Walak a #1 USGS! Unknown None None None rsg 890`. Multiple cement plugs of unknown volume. Shallowest None None Unknown _ Need HRR, PA, SI SOD' no dada Gubik #1 US Na d Ur#cnown Low Add to Site list. Need HRR. PA. SI with sampling. csg Q SOD' Well blowout Drilling mud assessment. from zone al 1SOT during Surface Cleanup. Photos plugging operations show disturbed/ slashed Plugging never completed after blowout. no data Gub* #2 US Na ! Unknown Low None Nora es areas two downhole Dement plugs of unknown depth Mone None Unknown Need MR. PA. Sl and volume no data Grandstand #1 US Navy 1 Unknown None Add to Site list. Need HRR. PA, SI with sampling. Dnliing mud assessment. Surface Cleanup Sediment from the reserve pit was excavated and spread over the pad to drill a 2nd well at this location, Upon completion of the 2nd well. the sediment was pushed back into ft reserve pit.. Area does not appear to be revegetaling. perhaps from the presence property plugged but no of drilling mud at the data on abandonment None None Yes surface status no data W 7 Foran #1 " USGS I Unknown Low on Site list. Need HRR, PA, SI with sampling. Drilling mud assessment. Surface Cleanup. Slressed vegetation, photos show plugged, but not open csg; metal & Active 306.3$.108f2689 Yes. see file site underwater abandoned at surface corwsele debris under 5' of water, Cape Halken #1 " US Na (Unknown Low None Unknown !Need HRR, PA. SI es to 27' open C_s Min a Veloei #1 U5 Na f t3LM one None csg @ 31" 280' of drill pipe, drill collar, and Core Unknown Need HRR. PA, SL barrel left rn hole. neve etaled Ournalik Core #i US Na / BLM None -No obsery None !None Page 5 of 14 •I E SPAR Response with Legacy Wells Lisi.xlsx Page 6 of 14 • • WI F3nCe Q BLM 2013 Risk Historic AOGCC Subsurface ADGCC Surface Well Name Operator t RP I Land Mgr Priority CSP Status File #IHazid Release? SPAR Workgroup Notes Status Status Need HRR, PA, Workplan for St with Sampling. Drilling Mud Assessment. Surface Cleanup. Photos show debris, stressed No csg. 15' of drift pipe Oumalik Care #2 US Navy 1 ULM Low None None yes ve elation and rock hit left in hole. no data Need HRR, PA, Workplan for Si with Sampling open csg & other Drillip) Mud Assessment. piping sticking out Surface Cleanup_ Reports of ground; wood, of debris, drilling muds on melat, conciele Oumalik Core 011 US Navy t BLM Low None None Yes surface (__q to 9'. debris open csg sticking out of ground; wood & metal 0umalik Core #12 US Navy I BLM Low None None No Need HRR, PA, SI no data —__—debris _„ debris buried by landslide. Need HRR, PA, St, Well not no dala on Sentinel Hill #1 US Navy 1 BLM Low None None Unknown ap panent in site Rholos Csq to 3t1'. underwater status Need IQR, PA, SI. No evidence of sheen, open crag slightly stressed veg, or drilling above ground waste on surface. Veg 37' of csg, drilling fluids level; wood and S imp son Core Test #1 US Navy 1 BLM Low None None No appears healthy lett in hole metal debris Need HRR, PA, St. No evidence of sheen, stressed veg, or drilling waste on surface_ Veg 76'01 Csg, drilling fluids Simpson Core Test #2 US Navy I BLM Low None None No appears healthy left in hate no data Need HRR. PA, Sl. No evidence of sheen, stressed veg, or drilling waste an surface. Veg 61' of csg, drilling fluids Sim sun Core Test #3 US Navy I BLM Low None None No appears healthy left in hole no data Need HRR, PA, St. No evidence of sheen, stressed veg, ordrilling waste on surface. Veg --60' of crag, drilling fluids Sim eson Core Test #4 US Nayy t BLM Low Norse None No apecars healthy left in hole no data Need HRR, PA, St. No evidence of sheen, stressed veg, or drilling waste on surface. Veg csg cemented @25% open csg sticking Songsoncore Test #13 US Na 1 BLM Low None None No appears health dritin fluids IeR in hole_ out of round Need HRR, PA, SI. Vegetated, no evidence of crag cemented @2D'; open csg sticking Simpson Core Test #14 US Navy ! BLM Low None None No release. drillin fluids left in hole out of ground Page 6 of 14 • • SPAR Response with Legacy Wells Lisl.xlsx ism son Core Fest #26 t=vrdence or Medium AOGCC Subsur(aen ADGGC Surface 13LM 2013 Risk CSP Status File WHazid Historic Retease7 SPAR Wwkgroup Notes Status Status Well Name operator r RP 1 Land Mgr Priority Unko Need HRR, PA. SL US Na ! $LM open casing None Nave Vegetated. no eV4dence of cog set shallow; drilling slicking nut of Low No release- fluids left in hole round Simpson Core Teri #14a US Na !BLM Low None None & weilhead slick Need HRR. PA, SI crude nil left in hole open casing Need HIR, PA, Workplan Vegetated, no e+wdence of csg cemented 12181; slicking out of openrigd ng No release. drillingfluid left in hole round Simoson Care Tesl #15 US Na !BLM Low None None d wooden cellar, Need HRR, PP, SL Sate a9 r�110'. dolling fluids wood 8 metal ism son Core Fest #26 US Na ! BLM Medium None None res Sim san Core Test 027 US Na J 13LM IJone None None Unko Sim son Gore Test #28 US Na ! $LM Low None Nave Yes clmnnnn Core Tesl #29 US Navy! BLM Low Norte No No Simpson Core Test 030 US Na 1 !BLM Core Test #30a JUS,Navy 1 BLM Low `None f'tone n Gore Test #31 JUS Navy/ BLM None Page 7o(14 photos appear to show oil at surface, from a natural csg Q 350'. Completed in oil seep, seep, also drilling mud in oil well Open perfs. At 1welhead sticking sacks on the tundra one lime capable of up_ metal debris PI u ed b BLM in 2004. unassisled flow. and rustingbarrels 'Need HRR, PA, St. Site photos appear to show Oil csg cemented at surface, from a natural @i02;dnllutg fluids nn oily ground; csg seep- Plugged by BLM in including diesel and & weilhead slick vin 2004 crude nil left in hole out of ground Need HIR, PA, Workplan for Sl with Sampling- openrigd ng ❑rilling Mud Assessment . out grouunnd in Surface Cleanup. Site d wooden cellar, photos appear to show a p le of drilling mud about a9 r�110'. dolling fluids wood 8 metal 160 feel tram the welt tell in hole debris. Solid waste Need HRR, PA, Sl_ No evidence of sheen, stressed veg, or dri" waste on surface. Veg csg cemented at 1S2'; open csg. Wood a ears healthy dnknq fluids lett in hole and metal debris Need HRR, PA, SI. frilling mud at surface. but well is also in the middle of a large in oil seep; Open oil seep and surrounded by cog sticking up; pooled oil. Plugged by BLNI csg cemented A150'; wood & metal see Holes in 20514- drillin fluids left in hole detail on oily ground; tog Need HRR. PA, Sl. Well is wellhead slick in the middle of a large oil seep and surrounded by csg cemented at 100% out of ground. pooled oil. Plugged by 131. dulling mud left in hole. wellhead leaking see noses in 2004 gas blowout at 423' gas Need HRR, PA, St. Leaky valve replaced in 2001, little evidence of contamination following valve on city ground; rig replacement- Plugged by csg cemented at 100'; & wellhead stick see notes BLM in 20174 iddifing fluids, left in hole out o1 round SPAR Response with Legacy Wells List.xlsx Page 8 of 14 • • yr enco o BLM 2013 Risk Historic AOGCC Subsurface AOGCC Surface Well Name Operator f RP f Land Mgr Priority CSP Status File glHasid Release? SPAR Workgroup Notes Status Status Need HRR PA, Workplan csg Cemented at for Sl with Sampling. 1028', cement plugs a1 Drilling Mud Assessment. 6387' and 5520'. Fish in Surface Cleanup. Drilling hole, drilling fluids Iefs in No data. Open Simpson Test Welt #1 ak US Navy1 BLM Low None INone yes muds near wellhead hale casing Need HRR, PA, Workplan for Sl with Sampling. Dolling Mud Assessment. Surface Cleanup Also Wellhead sticking evidence of a natural seep- above ground, Tar sheens in the summer ST from 2552 to 3018. wood, melel, and months. BLM is concerned csg @2915. Slotted liner concrete debris. Fish Creek #1 US Navy I BLM Medium None None Yes about exposure to wildlife to TO. Completed oil well Rusting barrels Need HRR, PA, Workplan for SI with Sampling. rasing cemented at 48; Drilling Mud Assessment. gas 0mv and explosion Surface Cleanup. Small gas while drilling at 863'; hole leak in wellhead flange, will Filled with fresh water to Wolf Creek 91 US Navy f BLM Low None Nano No flow if the valve iso en 330' No data. csg cemented a[ 53';hole left tilted with fresh water, Wolf Creek 02 US Navy 1 BLM Low Noire None No Need HRR. PA. Sl. fish in hole csg cemented at 107'; No data bridge plugs from 1447 to 1735 and from 554 to Wolf Creek #3 US Nayy I BLM Low None None No Meed HRR, PA, SI. 661, No data Add to Site list. Need HRR, PA, SI with sampling. csg slicking out of Drilling mud assessment ground with wood Surface Cleanup. Sheen on plug on top; solid surface water in well cellar, csg cemented at 30'; drill waste; wood hundreds of drums indicate pipe, drilling mud and debris; about 200 Skull Cliff Core test #1 US NaMy I BLM High None None Yes polential for cornlamrna[ion diesel left in hole nisling barrels Need HRR, PA, SI. Two open csg, wood drums are floating on a building; pylons; pond near the well. csg cemented at 1000', wood & metal Kaolak 01 US Navy I BLM t ow None jNone lNo Potential for hurried landfill. fdriltingluidsieftin hole debris Page 8 of 14 • • SPAR Response with Legacy Wells Lisl.xlsx 181-11119013 Risk Well Name Operator f RP ! land Mgr Priorlty CSP Status File 1NHazid #1 1 U Navy 19LM #1 JUS Navy/ umatik Ill US Na I BLM Low None None as[ Oumalik #i US Na !BLM Low None None #1 N East Topagoruk #1 USN l BLM Knifeblade #1 US Navy! BLM Page 9 of 14 Subsurface `AOGCC Surface SPAR Workgroup Notes Status Add to Site list. Need HRR, PA, SI with sampling. open flange Q Drilling mud assessment. Surface Cleanup. Drilling Gas well. Open ports. ground level. Mud pile overgrown with Drilling fluids and Metal & wood v , etallon and lichen tubulars lett in hole debris Need HRR, PA, SI. No evidence of sheen, stressed veg, or drilling csg cemented at 502'; open casing slicking out of waste on surface. Veg plug at 3470 to 3511'; ground. Wood appears heall drilling nuids left in hole debris. Open casing below Add to Site list. Need HRR, ground level. PA, SI with sampling- Revegetated. Drilling mud assessment. Numerous metal Surface Cleanup. Debris csg partially cemented at I support structures and drilling muds. Stressed 2762'. Plug at 2543% sticking up. vegetation Dridin mud left in hole Concrete debris, plate welded to pipe: l' of pipe rsg cemented at 1100'. sticking up - Need HRR. PA. SI. Drig fluids left in hole Wooden debris. Add to Site list. Need HRR, PA, SI with sampling. Driving mud assessment. open csg broken Surface Cleanup. Downhole material present csg cemented at 6073'. off and sticking up: at surface, area mostly original hole drilled to wood, metal, revegetated. Diesel still 7154'& junk len; concrete and other occupies the ground sidetrack hole left wilh debris. rusting dreulatioir lines. drillina fluids barrel Add to Site list. Need HRR, PA, SI with sampling. Dolling mud assessment. Surface Cleanup. Pile of tsg 10 1100'; pkig al open casing drilling muds is next to the 1049% drilling mud below sticking up. Wood, teller. No offical reserve pit plug: unknown fluids in metal, and glass noted o en hole debris. open casing Need HRR, PA, SI. BLM sticking up. Wood, stales that there was no metal, and glass debris at this site in 2012. csg cemented at 420% debris - •I 0 SPAR Response with Legacy Welts Lisl.xlsx Paye 10 of 14 0 0 w once a BLM 2013 Risk Historic AOGCC Subsurface AOGCC Surface Well Name Operator I RP f Land Mgr Priority CSP Status File #IHazid Release? SPAR Workgroup Notes Status v F Status open casing sticking up. Wood, metal, & concrete debris rusting Need NRR, PA, SI. Reports barrels. One indicate solid waste csg cemented to 45';fish marked flammable Knileblade #2 US Navy I BLM Low None None No drums in hole hazard. open casing slicking up; metal & Krideblade #2a US Navy 1 BLM Low None None No Need HRR, PA, SI. csq cemented at 38% concrete debris Need HRR, PA, SI including learning assessment. Site partially No wellhead. submerged intermittently csg cemented at 80; Metal. Solid waste North Simpson Test Wel 4 US N2n I BLM Low None None No during the summer dri0ing fluids left in hole ? No dala crude wellhead. Need HRR, PA, St. Surface csg cemented at 685'; Wood and metal Umiat 01 US Navy J BLM I FUDS Medium Cleanup co 335.38.00113090 Yes, see file Cleanup drillinq fluids left in bole debris No wellhead. Gravel pad partially csg cemented a1486; revegelaled wood Need HRR, PA, SI. Surface cement plug from 440 to debris and pipe Umiat #i t US Na I BLM I FURS Low pending dos 335.38.00113083 Yes, see file Clea 490'; sticking u csg cemented at 7206'; vVefNwad- Gravel various plugs from 8250' pad revegetaled 7 South Sirnpson 01 US Navy I BLM Low None None Yes Need HRR, PA, SI. to surface No data Add to Site list. Need HRR, PA, SI with sampling. Drilling mud assessment. Surface Cleanup. Large quantifies of ferrous oxide, zinc oxide, zinc carbonate, and barium sulfate were added to drilling muds. Stains apparent in photos. BLM field camp an site. Walls between the reserve and Pare pits have eroded. Wellhead and Water flows into surface gravel pad. ? No Wook #1 USGS I BLM Low lNone Name Yes water during break22L no data data Paye 10 of 14 0 0 SPAR Response with Legacy Wells Lrsl.xlsx BLM 2x13 Risk Well Name 10porator I RP I Land Mgr Priority CSP Status I File #IHazid Arca- Barrow Cure #1 US Na l til.M Avak 01 US Navy I BLM Barrow Bi R' #1 US Na I BLM Barrow Cafe Rig Test 91 US Na I BLM #2 I US Navy I BLM #1JUS N,a I BLM H' h NOr1e None Test Well #1 US Test Well #2 US Barrow Test Wetl #31115 Na IN©r1h Slo c Bora IAedium None None Unknown Page 11 of 14 Subsurface -FAOGCC Surface SPAR IWorkgfoup Notes Status _ ___ araiu5 Need HRR, PA, SI. Surface Cleanup, Photo CIMG0218 csg cemented at 53` shows area of disturbed tubing hung to 708': hole open casing vegetation that should be heft filled with drilling mud slicking up; wood & investi algid durin Sf and diesel metal debris open casing Need HRR. PA, St. Surface csg cemeoled at BIF. sticking up; wood & Cleanu-. lu set at 1348' metal debris Not abandoned, site not cleared, Need HRR, PA, SI. Surface open casing 7? No Cleanup no data data Not abandoned, site not cleared, Need HRR. PA, SI. 'Surface open casing 77 No Cteanu no data data Need HRR, PA, St with sampling. trilling mud assessment. Surface Cleanup. Drilling Muds on Not abandoned, site -slowly revegelatmg site not igred, More information on drilling open casing 7? No mud specifics rs being researched no data data Need 1lRR, PA, SI wdh sampling. Drilling mud wellhead leaking assessment. Surface cemented Csg to gas!? Wood & Cleanup- Cellar does not 1270;slotted liner to metal debris. Area retain water 1956': tbg to 1939 affected 50'x50' Need HRR, PA. SI. Drilling Csg cemented at mud assessment. Surface 441'.hole Iell willed with open pipe; metal & Cleanup- On mads stem water concrete debris Need HRR, PA, Sl. Drilling Csg cemented al 2260'; mud assessment- Surface periorated liner to TD. wood, metal & Cleariu . fln road s stem lin Completed well. Conerete debris Need HRR, PA, SI with sampling and workplan. Drilling mud assessment. Surface Cleanup. Drilling +csg cemented at 10461: open c5g slinking mud at surface. Sheen on hole left filled with drilling up; wood & metal surface wafer in well cell larQuids and wafer. de" 0 SPAR Response with Legacy Wells Lisl.xlsx Well Flame Operator I RP I Land Mgr BLM 201$ Risk Priority CSP Status File #ltiazid yr once oF— Historic Release? SPAR Workgroup Notes AOGCC Subsurface Salus g AOGCC Surface Status no data. Likely revegetaled. Removed from our list of wells of concern in < 50', no csg, no API#, October, 2012 Oumalik Foundation Test A US Navy I BLM None-uncased hc None None lUnknown Need HRR, PA. not in AOGCC database Monlht Meeting no data. Likely revegetated. Removed from our fist of wells of concern in < 50', no csg, no API#, October, 2012 Cumalik Foundalion Test b US Navy I BLM None-uncased hC None jNane Unknown Need HRR. PA, not in AOGCC database Monthly Meeting no data. Likely revegetated. Removed From our irsl of wells of Concern In < 50', no csg. no API#, October, 2012 Oumalik Foundation Test A US Navy I BLM None-uncased hc None lNone Unknown Need HRR. PA, not m AOGCC database Monthly Meeting no data. Likely revegetated. Removed from our list of wells of concern in < 50', no c5g. no APF#. Odubut. 2012 Oumalik Foundation Test A US Navy I BLM None-uncased ht Nune lNone Unknown Need HRR, PA, nal in AOGCC database Monthiv Meetin no data. Likely revegetaled. Removed from our Ilst of wells of con cam in < 501, no csg, no APi#. October, 2012 Oumatik Foundation Test 0 US NavyI BLM None-uncased hc None None Unknown Need HRR. PA, not in AOGCC database Moral Meeting no data. Likely revegetaled. Removed from our list of wells of concern in < 50', no csg. no API#, October, 2012 Ournalik Foundation Test 4US Navy I BLM None4xwased h_j None None Unknown I Need HRR. PA, not in AOGCC database Month Meetin Page 12 of 14 0 Page 13 of 14 SPAR Response with Legacy Wells LrsLxisx Well Name BLM 2013 Risk Operator f RP I Land Mgr Priority Historic CSP Status Fife #IHazld Rslease7 AOGCC subsurface Status �__ - -_-�� . A013CC Surface Status no dala. Likely SPAR 1Norkgroup Nates revegelaled. Removed from our list of wells of concern in < 50'. no csg, no AP IN, October, 2012 Oumalik Foundation Test US Na!q BLM None -encased h None None Unknown Need HRR. PA. not w AOGCC database MonthlyMeeiin no data. Likely revegelated. Removed from our list of wells of concern in < 501. no csg, no API#, October, 2012 Oumalik Foundalion rest U5 Na I BLM None -encased h None None Unknown Need HRR. PA, not in AOGCC database Monihl lAeeli no data. Likely revegetaled. Removed from aur fist of wells of concern in 0urn alik Foundation Test US Na 18 LM None -encased fi None None ilnknown Need HRR. PA, < 50', no csg. no API#, not in AOGCC database October, 2012 Month! Meetin no data. Likely revegetated. Removed from our list of wells of concern In < 50', no csg, no API#, October, 2012 Oumalik Foundat'Gon Test US Na I BLM None encased h Nome None Unknown Need HRR, PA, not m AOGCC database Month! Meeting property abandoned per then -applicable South Banow #7 US NEILM 2LI None None Unknown Need HRR. PA, ro erl lu ed re s no data to support proper Um -Qt 02 US N Noire Pendin Clo 335.30.001/3078 Yes, see file Plu d to surface abandonment no data to support proper Uncal #5 Ummt #9 Urrval A66 Umial #T Atiaaru Point#1 U5 US US Na I BL M US Na I BLM USGS/BLM None Pendin Hi h -PCB cleanu Active None Pendia None tPendi Mane Clo 3L5 313.00113079 335.38.00113093 Cao 335.3$.00113080 Clo 335 38 001I3091 None Yes, see file Yes, see file Yes, see file Yes. see lite No Plu ed E4 surface property plugged and abandoned pfupedy plugged and abandoned property plugged and abandoned Need HRR. PA,Plugged by properly plugged and BLM in 2009. abandoned abandonment suriaoe site remediated surface site remediated suriacx V le remediated surface site remediated Page 13 of 14 SPAR Response with Legacy Wells LrsLxlsx Page 14 of 14 0 vrcTon`ce o BLM 2813 Risk Historic AOGCC Subsurface AOGCC Surface Well Name Operator i RP 1 Land Mgr Priority CSP Status File #fFlaxid Releases SPAR Workgroup Notes Status Status Add to Site list. Need HRR, PA. SI with workplan and sampling. Chilling mud assessment. Surface Cleanup. Two large breaches on the south side of the berm allow water out of the reserve pit. Plugged properly plugged and surface site Drew Point #1 USGS 1 BLM None None None Yes by BLM in 2410. abandoned remedialed On Site list Need HRR, PA, 51 with workplan and sampling. [frilling mud assessment. Surface Cleanup. In 1976 the reserve pit berm failed and dolling muds/cutlings were released onlo the Poe of Teshekpuk Lake. Plugged by BLM in 2008. Solid waste from camp aril drilling operations buried on northern portion of pad. Erosion has exposed solid properly plugged and surface site East Teshek uk #1 US Navy 1 BLM None Active - waits 3Q0.38.11012652 Yes, see file waste. abandoned remediated Threatened by erosion. properly plugged and surface site J. W. Dalton $P USGS f BLM None None None No Plu ed b BLM in 20fl5. abandoned rernediated properly plugged and surface site South Barrow #8 USAF 1 BLM None None None Unknown Need HRR, PA, abandoned remediated properly plugged and surface sile South Bartow 911 US Na INorih Slope Bono None None None Unknown Need HRR, PA, abandoned remedialed properly plugged and surface site South Barrow 013 US Na lNerlh Slope Boro None None None Unknown Need HHR, PA, abandoned remedialed properly plugged and surface site South Barrow #15 US Na !North Sloe Boro None None None Unknown Need HRR, PA, abandoned remediated properly plugged and surface site South Barrow #19 US Na 1Nrarlh Sloe Baro None Nana None Unknown Need HRR. PA, abandoned remediated Properly plugged and surface site South Barrow 1x20 US Na Worth Slope Bora None None None Unknown Need HRR, PA, abandoned remedialed Need HRR, PA, dolling mud assessment, containment assessment, possible releases. Breaches allow wafer to flow into and aul of property plugged and surface site Watakpa #2 USGSI BLM None None lNone lyes I reserve and flare pits. labandoned irernediated Page 14 of 14 0 Explanation Page Permit Number These well numbers (typically beginning with 100) precede the beginning of the Commission. No permits were issued and no formal folder of record (information) created. Information known to the Commission through other agencies, journals, reports, news or additional historical means has been collected and entered into a database of Well History information. If specific information exists, these pages may be filed in this folder. Occasionally, the information has been obtained from a report that may deal with a general area and many wells. If or when possible, we may be able to 'point' the person interested in this specific well to one or more of these information sources. However, at best, this will be incomplete and independent research should be conducted to locate, if available, further information about a particular well site. • CDU—%. 3 p I P�14 THE p Ee al-t crit CL E Lv zcLZmeatai ofALAS KA Conservation Division of Spill Prevention and Response GOVERNOR SEAN PARNELL Contaminated Sites Program 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 scow 8 L01 4 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 indude 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. r•�CDA \re\FA,1P.n1 F.,.•:1;t;Pcri.ri1:a.,RPr1P-1 A ornrirc\nOT\RT.M\Proiects\Leeacv Wells\7 11 13 Letter to BLM on Legacy Wells.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 Jolie 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 Facilities\Civilian Federal Agencies\DOI\BLM\Projects\Legacy Wells\7 11 13 Letter to BLM on Legacy Wells.docx 2 O J U 'C a N a) N 7 C U) A d a) = -o N 0QO .) 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H a) N CO > Cl) CD C Cl) C C Cl) C U Z Q 0 0 0 0 0 0 0 Z Y N_ CC M V' (Ni 2 o J ' C C C Cl) a) 0 C 0 CD CD a) Cl) CO d Z Z Z Z Z Z Z Z Z Z `a) o 0 0 6 6 m 0 CO0 COo m0 n Cl) CD n a m o 0 0 0 0 J fn CO 0) cn In 0. L t L L L m 2 2 0 0 0 0 0 m co J Z Z Z Z Z -J .2 m co 1 a CD Z co Q co Z Z Z Z C O D D CO CO CO 4k co In 0 o co _ N _ j 4k 4k 4k 4k 4k 4k 0 Y 0 C 0 0 0 0 0 0 c o t ` t ` t # Z - d a co co m m co co 00. 0 2Cl) 0 0 0 0 0 0 0 W -i cn cn CO u) CO CO 3 r e ;3tlnlJSO~,'~. I~L eS';3 '''Jell il.jtJ:: 3. 1 :'3 ~:) ,~: :) .~ ~, E ~: ,. .:'.;.,' ,.x2~~~~ 1~· 1~30=13~3 1/~f~~15'S 15E>-166 15E:--=1?G l?f·-=IG:r" :u:n~19:;. 191,~186 195""201 J!. 'ª-£!~:--r.É\:: ~f 3!; .ojl;; CJ:~-" 5:7 ?1 1011 5) 5;: 1.....'J 'J ;')'; 52 e MAR 2 1 1949 {J" S~, C}T~OLOG]GlLr; stIRVIT{ GEOLOGIC LOG ]~¿3G~C i1?=~~1:~?E Sallð.8·GOn(~;, fiD.8 ~gxJail1,. IT19d.iœn gra~r;. 1"íery :f¡,ie~ble:;; f:~['ee oil ()11 'G"J9..-GE;l" in, 111ic·ruf',)ssil ,SEY·fJB..1"/.a;tion~ 0:11 OdOl' ð 1 ~ Sano.stone:> fla.me B..f,; a.bcve~ l.:~f; Silty cIa;? EÛ~t2.18f' 1re:ry sö:':~·G~· J1enl1J!ìl gl~8"Yr ~.r:ltb. in.ter'bed¿LBd $,::¡'r'.{].;j'" lê¡,;;?'el\.s~ filLe "to -Ve1:71 fine g1~ç~illed,~ ~~_J ,~ ib .&.~ 8".)118 9.$ 8.1Jov8o S3J11e t;}tpe B~S a,::c;,vË;;; ex.ce-p';j ;,i1ore sandy laysl'l $:} T.b.e 1·-¡holø 5ï ~t ø CË/J..(~fl.reCn;U3 :tn spùtGo') ,,1) Sa.;''!.ds '(i one.; VO::"i.l f1..11:8 gl\9..il1;: d.l1.11 y~llov¡, "';¡ery ~;Of'G:f' model"' ð, tel;? eaJ..{;'B.r E;O"?)~S ~ SùE18 fJJ.l t1T ana. :il1 tÆ;rbÐð..c.ftd. cla.y Sjhalt::.: 0 31 611 ty c.la;y" sl1éll~J:~ çbJ:'lr gI;t:~J' to dull :l011o'b';? vel'fJT softtJ SiÌty cla:r ~11ale~ vl9al-;: to d'tlll yello~]; top ~Da.r"G söf·t: lovit}r 3-:1 model"fB..tely inð.Ul~ate¿t~ Clay sr~le slightly flilty: medi~m g1~ay to weak yello1¡lr scf't; bû'~-Gom 6 n- fé,i::,"'ly ~;el1 inð,.t1.'ratedit med.arB.. -t;el-::T ca:;;~ G 3..reCllß~ Same -~íY~Ge as 16õg,-17S (;!: mië.dJ.8 l"'á ~ fair1;y'" ~Jel1 inð.w8,.ted~ Sli:g}TG sal'c;:r tf'~G'ted Clay sllale;t SOTIl3 silty Cl.2-;l~ bottom 6H ¡ITocløra;tøly iIlc11EE,re ca..reo':;.;;", dull yellow~ so~t~ moò.Ol'9.-è01y cal= £1.' Intel'")8dcleð" clEq 8.:(1,6. ¡;:Ü -è £:hE,le t G};;\1'k ¡p:a;¡ >:0 du.ll ~rellcn-¡~ rflo(le:r:3..t91;¡~ calca..reotlS~ l' . Sil[¡s·:jo:'l8?ncl v";~l'y fine g.;~ained áan(l3'¡;ol1e~ """a};: ¿¡-elJ..o~·1 to ~ÿeI1()~"~4""t~:-ecl1,,...r,;y·ello-ti;> s.l.:~g!r,j.l21 ca.ll.JE~r= Q1..!.S~ paorly i¡}.d'tlra-ted~ SÜD1e in.ter1:¡8dcled cIas· a.s. e..bo'vÐ-:J Clay shale;~. 1v9aJr to (lal1 ;:j~ll-Dh~gr-èe¡¡.~::telloý¡~ fe~d s:il t~;" L~laJr :~Et;ter s-~ mod.3rs,.-bely êalcaJ:'eOtlS~ ~ lTOrrB: Etll colQ:r clote::mill?...·;jiol'1S J'i1~..c1.9 011 viet C.ü:tf¡,.. '=1= AIJ)'? \,f} ~, 11 1 ;;~ 1(· '1 ¡~ ~.~ 'i.' 16 1,', ~~, t 18 1'3 20 ~31 ~}2 ~Y"l !:-Jt...J ;-34: ~~{) 20:L~206 203~.81=1 .21 r:"1 ,M- Ç).r"~ GJ..:J--=·tJc,,¡. 221~2;¿S 22ß=,231 é:3J..~..23G ~>'36=241 2~±:~.·-2,45 2:f>~";~~251 25~~25i3 2~36=>26:1 261-26G .2236,=271 ~ 2?1,~2?,f} t! e ;S9~~,I: h~ ~, 5' 5û /,' ( ", ':.1 0" " Lost:. Lost~ Ou5C £.11 6' 0) 5ð5' (f) 5" 5' ('?.ì 2",5; 4~ 5(1 5' e C 1 !ç?;;l ;;;}lè1.1 (:) ;' i D. i)[;1,1"' -0 S ~ sligh-bl:;r calc3x8olv::¡ Lü ~f¡er 2° 81i-g11tl;l 8i1 Sam9 sYüe as Gore No. 11. 1 i SiJ.t~r c.Ia:! sr:a.~eo Same 2:,::; lIoo 110 ~(; Si]j:; storlø ~~nd na11à.y si l'G~rtú¡'le tJ Ÿr6~1r' yello\<jt" non~úalcare0uG; poorly induxatBdv Petro~ liferO'L1S :?dcr ~ Sa.¡n0 f>Lo$ a.1Jove~ S1.igb"ul~y" gof-~er: s·t,rù~5 þetroliferous odor" Sani.;y" sil'·i;~·j;Ol:.-,:::~? I)Ð...Lf3 ¿lel:t'Jvl!: mod-erai;el,y i!lð..t:xa te (1., -a.on.°~·ca:J~Ce,.l~ êOì;tS.) 2~5; Sa:nd;r silta'~Ol1'8~; 'palø :T81:L:J~4'!: m.od,~'l.1a,t'Ðl¿t in:~· dül~a. tedt :~l ig:h{;ly' {~ê~lDa:ce()"'J.s", 2~5J C1ÐJY sb~l'a;, 1f'JeeJr. :rellow~ rii':Jc1.0ra.t~3'1;y lndvxatetl:} wit!'!. int;a:~"beétiE;éL [18~rt.dy Si~~-t5ton.ef. i:.1imilar 't(j l.:rrrper 2ð 5J ~ Clay 311a10, sligh'~l¿r silt;r "111 nar·ts; r,¡eaIt Yél1ovJ~? nOTI=--cålcar eotls ~ In;J'::~er a ·tj01'!;1' i:o.dura tad\'! (Note~ Mo~tlsè anljearanco 3uggegts possible infil ~./rat::1.on à;c·iJ..1.i11g r:l~1d._,) Clay s11a1(;. !lh'1{H111l1 gZ'ay to 'creal;: yellow. nor:.- calcareoüs~ moð.-E~z-e,.teJ..;r inihli:?at;ed1) rt10t ·tlecl a-plÇJeß,T<= ance, same as aòovÐQ CIB.,y shale:r gil~G:1 ill na.l"t; lTIedJ.-uJ11, gr8.,y'1. slis'l:J;ly calc,9.reo11.s i:'t'l ûart;s, modeltatelJT indtJ..rated~ Interbedded clay sñale~ and silty sna10~ TIorr~ cB..lcareollf6~ ~~'ee.lr ~rBl1o~~¡ to :neèti1).Q grð:'!r¡.. mac:t9~a.t8:L~f i21.d.1.:rre:. t,ed" Same 9.S aÒOi'¡en Sil)~ s}lale:t calca.reol~~.3 in.. 11¿;trts~ \110a.k yel1(j'~¡;, mod3~~~·31 'GØl.;jT ind.1.12~tt8d~ SCHû¿: iD.tø;c1)ecl<lsc1 claJ_r srl&l ø r> S,?218 ,?",S abo~l~~.. -2= 25 ;~r/ 2fJ 29 30 ~j .;~ :70 L)f.;o ~~ I":' ,"-J-i:~ ~ ::~ i:i7 :,., ,'- i:::) :;j3 .:~8~qi~J1· ~~? :-~:~~ 2~{- 8 .2?:jø:> 283 28~:;"'288 20B=-293 ,892\_·299 29S=3t)3 30:2-·-.30:3 308~313 313~~31É 318..,·,~322 ~32?\;o·~328 f,9 C 0 ~:r}~ ¡,...~ ;, ö:-; 5) b" 51} "l5~ h ~] UO""-" Sv 75 ~ ( 5" tJ -j ~5 Q e e Ii8SGriT)'bion ...-""",.,..".,-",..""'.....-~-,~.,.~ ()~Tot;f:: on '-]OI'8 =-~2::b~_~1 :-¡C():C'I~30t mea sur e1l1,3:n t; ;'j7G."",2?~3~1) 03..a.::ï -2,nd silt Slla~~a int'31"fJe¿Lcløèf..:) SÐ,lTIe as [1Ù(:-V81:> C sl-1alø'~ rn~3:~~7~ 1...ÜJ g:>;}9,~/~ ~ 1·;:lacl.e2"aa.~Gel}/ i:ndJJ.l~a.t6tt 1tll-th ~30ma i:n.te:cl::e<J..èL9d sI1-;.~ sha.le:~ -ca.lcal"e01..l£?-" 1 i g]:1. ~i~ g.¡: ci,;l -~. ^ u-V ~?el1:)1'l ~ Cla.:1~ s11al~3$ sli:g}ltl;¡? 8il"Íj.~r iJ.l "Da.r·ts~ non=calGare()t1S~ al. tØI'118, ·t_:1J1h.(;;' ·Ö-9..:c.cls c:f ii£.)2~lc' .~~a'T1 aj1 è" 1jale Vç:~ï J uw... -__ ...~..... (-='-.r¡t'" ..--'... .., -~ ~ '" J3ez!..~;ùrtJ,te (f) ~ -àl"Gerna';~i11;g 'bands list:? to 1!¿1r¡ ill thi clmo s s" S.eme a.8 al)o~¡ø~. '/ ~,J \ j Clay 8l:1.::?\Þle,; sli;gb.tly oalc,¿t~::~:'301~s _06_ pa:rt! medi Wi! gra"'ji to T:c:11e ~lellt'~~l~, mO(ler~lt8].~,t :tTld~U1·a·bed~ rJOTJø al·tezsT2.ati:ng 'be,J:;d;3 as al)()vø-;, -üoss:lòlta contðJ.üi'Ll-:=:..tj.on f:L10lTI ttI'ilI:lTlg ,. \ Cla,y -Sf:"!..tJ, d:y'" \~(> 6 H sh1.,1E~3 ir::ti-91"òeéls ",.¡;\- 1_,_~ S9"E:6 as 2.00'\te .....t., t::l-..:i...J... sbaJ... ~a ') nale 3'~eljo'd~ ;~liglltlJt calca,:~{301.1~'3, J.:' &.3.l'lfJ.~r sil t. SllE118 t paLe :¡'"clJ'..o~iJ~ mo~lnlrya'tely ind1;1"te~t:;3d'ð slig'ht ~!etrcli±"G::~{)f).S ottor ò 7!5;ì !nter1jøclde¿t '~5..1 t shale BJ1¿. {..~la.y s:h.ale" pal:e ~T,el1c!t1 to m~dilllli gray~ possible cont~~ination by drilling mtU11' Il1oël.erat-aly :lndtue..'ted% fragmê11ts of ¡r~(:TO= fogeils at 3f)5~ ~ &1.12dy silt Slle.l'-:1-". 'Oél1f: to "t"lea}-;: CalC2.1'eOìlS in -os,::',;;, moderat'Ðly yellow~ slightly :1.xl:itlTél t-ad:l> frEtg""" Sowe interbeQQcd to 3101 }as TIetrol= melltí9 of -ma.Cl'c~f,:)ssils at 311~-t <.:18..37" sr'¿l.le, siJ..t: ,sL~1ale a:~ ~09~ ìfr~:~Ot1S odo:i"*~ }1¿11'td li:mes·~¡)n.e ch:lr~;j a'(; 310lJ:; þ:co ~b,~ b IJ7 C orrOT ,:; <j :~~ o:.lary bo eli e s ~ SiJ.. ';j s}1aJ~(J ~ t-?E;';,J:: :y:,,(;)l-I:)1v; 1'1or>...calcêJ..re(rzlS;) 4 !Hodel'"J0;tel;,( i:n.d.ul"Et >èeð.; SG!rt'3 'GO c!f:l.:t"l~: g2""(3.21· i) el,s,:! 81:a1i:Jr, 211ed.ir_:!l J..:?::Y;'I,.::;}..... 1 ~ nJai1::1y Jûed.i.u..rn -to gl..~:E!.ir.~· -poo.:......l:T "~~8fl G.:?~:J,d.stolle~ él Ie~l cal~bo:l~· aCé301.2G 2~1'1a.. fl1ic8~Gt)01:t;3 la.miJ)i.~e~ :20 5~ Sil iI1Qlll~a~;jed.~ v¡eEt.~,,: r<Lightl:f ';';.Ð..lcar6:ou;s:,:o mctle.rB.t;eJ..y 01;'1; SOTtlS in·tsTbeêldeèL sIlt 8}l.~.1'-91' O_..75;j Sr.~D"",lit12of7'a}Jh~.;~; J.,iITI8S-:;(}119-;, rnedi11l21 gra¡/" lllil'1t{L~ 1.') 75; In t"el""'b~-:;d(le;l cl:9~3':- 81if-11c-; aD31 s:i1 i; sl1ale ~ slitsJ1tly ca.1Gar;~ou.G: sirrtll,s2' tó ;8 ~ 5~' J..êtj'eJ: to Clay s):~ale;, 'weaJr }¡;£~11rì''rl ·;~C) ¡~1:ç: &-~&Y, mode¡\8:è.ely ind.m....e,,'tied:: in.t;3!¡be¿:~tled s:'LJ..-íj -311a..le~ -oale ;lel1{J'~d~: sl i~g11-;;ly C·Et..LC,fl7t;Ctl."Ë:.~ rz =~.._r:-ro: ~3? 3£ 39 lJ£) ~~1 ·::12 -<~~) t1:i~J~ ..~5 ..J,G .<P:J .S:::j ~~a 50 ;?e-p~,!~ ;~~·23=3¿:,3 :,~,3Z=.32.8 ,33:3·;:.34,3 54;3=3~13 ~3~lC~353 35i.:~35,J 3E!r:·?"36~3 363~36EJ 368=373 3~;3~37f 3\(;,1 ;j,,-~. 38 ~, 383=388 388·",":.393 ~9~5,,-.-~~9;3 e R (~L~Ovel~:'T "~~.=-"''''''--'''''''~''-''''-'= -" :0J ¡O::;'; v 5~; ...·t.. :-"(: 5's -) D'-' ;V ? ~3 '--JfJU -:1J ,t) .~ '-~, j .:.,# 51 ;.:; ~ e G IB,;y¡, 8Ì1.E\la ~¡ dE!.~':l:.: t!.:} UTI gTaYr 8oft~ calcareðus~ Sa.~ne .~; 8. X 91'; YÐll()~:l i rlteY.."" 1,:·;3:3..8 ·2:.-bC'.:^Ti8 ~ as Ii ¡ ~ -~ :.';~ .i. 0:( CJ.s..:..;" ~~bEt.leë. ð 8 .?~ ;J.:) ·z:·· e· ry SE''.tJl1e ';jYP~1 a,s 31:1. ;gb,<;ly :t£lo:r ê iD.d:Ll.r-a t.f..:ê1..,~ 2ö51 ID:GOT'b~,:1ð.c1oð_ Øli. :Bl'lÐ..le éìD.d clay ,:;;,hals$ \1ree.]x: Y$11o~¥} to m~(lit-;.t~ É~rG.)7J~ mode::-·a.:t;oly indu.r.9;ted~ !).oT2~c~lc£S1"eot'L=j.; 1:~TiZ1l1.te C1.¡,oss 'bed.ding in sil ~j sJlale", 2,~5¥ Cla.;Sl :3b.ale~ E;)~?t,:: ï¡,¡8f1.~ Yéj~:_L)1d to dark gra;r~a faT!.,!! silty layor,L Cla.y sllale" (t.:uk: ~g2-'aJ?'t mod::~:'a.telj'- indTIX'Plted; lorrJf-rl-- }-;alf of Z~·Gre 211 t slìD..le,~\ p[;11e yel1cn'l~ mode 1".9..tel;r ind:t'1_1-1'~27tedy., :w.on~·et1.1eaTeot.t~ 1¡¡~~ tl1 intelo'l'=c. b,øclzJed Cl19.y slJßlé,:. Sil·t 8:halB~ ;ŸeEC~;: YÐl1o'tø,?" £;l:lghtly calci:t.:reol.ls:1 in.'i:al")oeëi.de;d, zhEt.}..i'~, éhl:Ll ;le 1l011i~~ lr!oêtere.·Gf:¡1y indtl?a· jed" Same as a.brPlø~ ~:)1~!01om~-.nt1:bel~y~ sil1~ sbaleJ'J '- 1051 Cia;;!' shal e~ J)';'I11(J1!1~ Bofti ~ lj Silty clay øbE,l'ð,; -:xJ.e ¡enOYl. slightly cal~8?0ou;M s15..g1rt17 c8JlcE1reotls'$ moderately in~v~ated¡ Cl.a¿? sl'2alø~ ~1i t~:-l S();I!·9 ,..,;<;.-, ;~.)J..¿.. 11:1701' $, T)l~le to dull slightly cal~ yello't¡~ so-.fty ml~èLe:,~~a'::j,31y C8J.>je0119q ine~Ul"e~te(l!. I::~ ') 4· u..!.~.. v s}:tale £'1 fe~..¡ if9.i; OllS OdGl'lt in, T;¿l~C:ts~ ye:Llo'!~~ 1110derately i:r:Ü1XC.= f:~"':3,6lfl.f;:atg: '[ì1;TOl1.g ~oGt':"'ol<,;c· a f(~,;,;¡ t1-~Ô~:n cle~¿t sba,le :L11·teTw- *\.¡ea}: ated, ca.rl:;OIle:..G00U::3 beds, Ve-l':'y.f:ln-e ~~~rEl.:i{l 0¿:!.:ncl::Jton,G¡; :3...nd, sil,ts"t01163' ",;,/eaI~ ¿reJ.1Ú1!I:; SDj:t ,9.::I.:'t f3 t~ro:-r1g "t.-e-trr()lifer;JllS CC1.t:>'T " Fine to sa.l'!./13 'ìj()~t1e þ so:ft éI...n¿t e·t:cor,~ -ae-trolifeTOu.s OdOT ~ . ,J fr iable;~ 710n"""'CElol.Care(jf.2.S ;3~ Firre to .rex¿/ :£,"'::.1:1:3 gl"al11 Ba~~:JL~~rl:'OD,.,e~ sef-;; ~"1.cl fria1:)18~ ð.vJ"l l1011--=cal ,:;ar€~01.1S~, C}.)4~i LiT1\V :l:~'tonstoTle e·JIlc.i:et:lü}.1.B, J.J1bJ Same a.s 'Go:p 3~ 1: ''f)8trolifeTou.s Qél()r,~ Oh;~ ~ {..... ,....." ',) ..'~ 6~? .5{) 5~1 f:5 '!;:.0 1..1':1 57 5:3 59 ::J 9 C~<~:} ;·3 40 ~::=~1~) r3 ':~~j2;~4:2:3 ¿:1:~3-~4:2~; ¿.J:~~::;:;-c:. 4,28 :,~:~~a~~ 433 4~~:;~3~,4..t38 ~~38~-~¿¥.13 .:±.:.12'r.>> ~l43 4~1~3·,-c<153 .£~,,~~'i~2;~+:~Y e 5 t,:;¿ "J .j.ù A? 5' 53 -:" ;:;1 :~ -", 01: -'I D" "',,:;=, J e LJ:g 1~etl~olife}.1o'L1s 1? Sil,tjl- 88;111e -=::.3 aöove ~ ;Y~$~LLO~!r: :mOC1S1-'ô..'çely '111~.+: ';:::0 "7;2;:E"::t g-ra,iZ1S:i fjË~!:.ð.st:;11';;:¡f 1¡¡eal-c yellü1.:4:. strong petTol~f8~OUS odor~ soft to moderately 111cl:l'D....e,-be¿L:;. ¡;1 c,a~C,ft2~E';otlS~ 8·)7116 i11terhe Ö.ð..ød. cl:~'J; sha.l c ;:3,llrl ~3~_1 t: s11ale ~ 2~ Cla~T shB..le.;; --vre:~~lr. yellot,fJ:o ' n:ocl:sra'tel;i inð..'tJIa.';j8fl::) slig}ltl;r calc'£.G: .2: 01J. 8 ~ 3~ Sil"t shale:t 1162,1¡: ~7el¡G'i::,;:""'gJ!8f)n·~·)J}·eJ..lo·:;1-, mc.d·era'ij91;}' illt.lur;:t-tad.:; sli!s.b:t 'iJet;rol:lfË;~cot;~S Ü(lr.;I)~ sli~2;ht:L:y calcæ~eOllSa O~l Dense liJ~1-2 stor:.ø-:: ~Jlac:Ir ¡Ili tl~L CEt,1c~i 'GB ~veinst; ·conc:cotiOD. (,p) Þ.I 3~9J ps.le ,(:) ",'¡eBJ,: ye1.101:v) Itloderr:?l.tel;t :tj,1. k:'Je.J:t;s·~ S:)1!}-8 i:nt,el'te·:lded cla.~T i11,1u.roo;6 øhßleJ'} S11-t ..' ..., 8.iJ.£':".l.e.;; Sa1"l :¡y a. 'ted" 3 ~ C 1,a~7 sb.al·,:3 ',' il?ð:c.:¡~nGed '; tit) -;;iB/:~~f :}l::::1 ¡:50f¡; to mode::-ately limøst)~e concretion(?) a~ ~op~ JW, slightly calc~xeolis~ 21 Silt sr.:.a.lø1 rùcdt3TD..t,01:r i11d"~:.L:ati(?;d.:- S01l1B intË!rbe.ètà.ed. cla:T ør12J"~~;J Sil t G}jalé~. lig}l'~ Ilon-.ç,S"lca.:'::-3ûtlS;:, a some iJJ.tei'1}e1èttì). (çs:e,y?~ mc;:leratelJ'~ incltTa t£~cl; .cz~I·'l)c)n.a.,ceJ)u~:3 fra.gmen i; s; 3]:lal·:?; ;;j"~a.k yello~~'¡ to de.;á~k gt.' B:j- . 3t Same a¢ above~ 2~ ~. :i:2!t8 grain, 4\ie9k yellow~ soft:" Sa:Q.dS'(jOl10 f very scn~calca=eons; Bllial1 aroOWlt ùf i~terbeddeQ silt shale~ Clait~ siie,.18:-. v~re.:Ü;~ :tç~11o'"~l."F. mO¡i9ra~'Gé].:'l 211ðJ",tl---ateð.{, nOl1·.....c8,~ce,,:røOllS: '2ozno :l.ì;.';;t;3rl)::¡dtlGcl ~·l1.t Drk~le,~ Cla.y al'28.1e: i n-:l1J.:r a hT90Jc ·¿?' Dllol:~·i ·;~O il~iI"]..:: gJ.'8':;.l<;; . "~ moct:9J:"a,tðJ·JI ~2,lcarf:,}'~lL:1 in "OE:.rts~ sil . , 211. paa:~'i~ 8:'1 o ~ 5 ~ Sa.:'1dstorre -;<tt!j eJ.;~ ~t() 1 if:?~ht; 118",:; 'i"' 7' ,', ~,5'} 6"T a.y :' ~;~):ft ~ 01.p~j- SI~Œl1G~ 11!d.tl?::"1'G .~- (".: ~W) lj,<::;r~~·~~;:J.l~'~?j:," 80t~S ~ mi~(li·tl!Q d.E'l'" It {!;2.~E!..¿t ~ Jl10 rlarat Gl;{ '>/'1 UU 3;: SalJ.c1st C:r.:.~3 ""¡2/;2J;~ ":::"2-8 t.o :t lI~:<:~ [;1~3.in.$' $of·t to jTIod.a r8,. ·~,:øl~.t il},.éLu.r"Cì.f·133d;> 1fJ'eelc -to cl'nll ;;r'e~L..t Ü-<:;1.:; 0" ';:5 '¡i Sa1:1d¡;-f;'OD.8:' -veX':l Tirle ,,S1~E.lil1? 4<f:<9J~E1 J¡-"el1o'T,;'l -to 15,. gh3~ g,¡~s;;l') m;,)cle7::~t~:;},-:1 ih;iura'ted.!'. b.ié;111;:r Galca1....eoLls~ C;I fe\·j ca:,~' bont;1,ceor¡'8 laTl1ina.,e 11 3~ ,25 w Sa:::1;ls·Go:n.e~ J:lI1Ø 'ÎQ 'ff'3J::r fil1¿: Ë'rain., "HeeJr yel10-;:1; SO!\';:, 11.01¡,..,.·calGG.1,:t:;)C'L18¡ [;t, :te'i,·¡ ce"1~1}or.2t,CeOl.tE3 f!"'agr.H~n_-tst> -5= ;-;1.58,~433 r " r) v " :5 ,~16 8=> ,,1::'1 3 ~... (¡ ~") ~, Gi5 ~1~} 3~ ¿J/18 ,.-¡) 0'; 6"~' ~1:i·8........llt3 3 J:; 4' v ., \! , 6;] (f 3-·48 8 6' '.J (38 6~? 70 7'1 -;t'? ~ 'v ;(;3 ?,{ T75 ;;16 77 e e ~1¿t .":: e l:j 01ier:r ~-t_--=:.o---...~."" 4i)3~458 5' S8J.'1è..frGOTIG:: t;-S:"':'T :::1[J.6 .-'~o :c'ìne g¡~8,i:11;- gl""e8rt''''~Y{311GT~'1~ sl5.{;b.'tly CDJ.)~al""t30··tj.s~ a. telJ7 i:üd-cD."a. 1;]{~a1r yel1o~/~=- S()I~t to TI7.ode:z\>·"'>;\ Sf:?~r:; a. s .f\1Jo1¡3~; O,,9,,:,116 as Et Ò<Ytí:2: ..~ -Si?jille as é~D070,. Some s1ig]:t..;~1~l· ca..1GEW.~eolls la:'i-ff1."'~s-1; S$..D. d. s .;; 011 f} 1· ò. I 2118 Ë~:ra..:i]l~ moð.erately in.th.r:~a'~je0.) we~( yellow to light grayo 1,f'i:;;T-y sJ..ightl;y- Sa<l1!e as ,!;J)OV\3~ jnocleZ'P~·tely inð..l1.Ta,·t;3èL;~ iIJ.<t~erb0dd;8d sil t s11l11Æ';,~~ Clay sl1ale;\ "L-;e~.r:î: :!ellc1!J~ aligh'tljt C8Üca~':"30'J,S; somE, C la~J" ahal a ~ calcal-'eOl:,g.!' :Ln teZ'oec1.s 0 sli~glì:tly silt~ shE.1e ~Jl igb:t;l:y' 8i 1 t'leak; ~rello~!; .a. fe~¡ !noclf~rr;J ·!~.9J..7l i¡1Ch.ll~&..'tec1: ,{~g e~Lg.:9 3- -., ;:).,¡ ~v Same ,is alJo';¡eø J3an.ded 'Dale yel1.o~.¡ and wear:: yel1o'Vl, 31 Sandstone~ very fine grained~ slightly calca~eous~ ~fØa1t ~tel1ok7;; :1odsr2.'#.;ely in.rlura"tecl" ,d,93=4S'8 la Cl~y shale~ W3i~C ;7ellow, moderately indL~atedf slightly caJ..('a:coC'H~ bal1de¿t. I) Sands'Gonø, 78:::;" fLû0 graiLl~ -pale ;rellm,¡. go;t':, GO 5~ mod.e:¿:'a-(jely in\.t:lra·Gè9,d, calc~E'~re01~~~ 31 I11·Gð:rbeèLi:~(1. el~~y sbi:11e -snèt silt sha#lrð~ -pale 'GO lieaIc ;¡-ello'";û; C[J..Lc/~;rieOjJ...s~ mc:dera'tely inclv:ri3,.,tscl" Lt;¿,3~50'3 i-".i .J ., ~'1 3119>.'1. e modêTa"èrel:7 111C.t.11:' a 8ha16 in·tø~cbed.decl~ ":,¡-reeJ\: 2Te:Ll 01~:;:. 'SOll;) sa,llClS'GOl'le,;. ver;y' f5.118 g:." 0 OJ.:. ~?,f)-11C1;¡~ nOll:""calca.r~)Q1.1.Si.\ Sil";; a11d. C18;:'.::- f7!&..iz'1s 'H821-c 50::ÞS08 ......., OJ Sil t ;z~11Çi,.1~3; !¡Ii ':.';11 5~i1t~01~i)ød.d~3¿l cIs;;! s118.,le,~ 81ig}}tly c8~lcS'¿"eo1.:t:;~ 1;J,9E:..f:C J'·iS111c1~¡:""'·gJ~ :}€;21;..,..yello't1'J moðJ?;:!."aJ·GG1~¡ il:dtlr a, ·te (t.. t:,~,)B-513 57 SElme f~ S a. ;j(jlre~; 51~,~~513 Sil'i; 81Blf:;~r 7:l3E.F~: Jl8J..LOl1y. Bo(i8:.~a·te-ly il1ð_urateð.~ sligb.i;l:T Galèt~TaOT:~s.~ SODC :L.tl'~<3r1Jøð..ð.ed cla.:v s}:s:.le~ 51f~523 5~ Same ~?. S s11al r~ t'J fox 1.aly,{~er " "'"" .~ <-.....L ,..,.'] ~.,.r V·'·"-:iJ proportion a nova .:3 8 ~~-=5:~?~3 rjJ.-[;Ztl~bed{10d c~~a.~{ a2..J.. -¡j~T ~5 }}::::tl e ;_ 5" .. ,I Ë~1'1S..1e ro-,~, ..1 .::....1.....'.. ìl1.clu:r Ð,·tec1 r o::1:..c 31~G0 ~ S ~"Je,:}: t·o dU.11 yel1or.:,rry 58e--5:3~3 Saze 6' ,,~ '-' '" al~Qv:3í'1 -6~ " ;''j,"",- t[:~ 8.;~ 8;; 8i_~ S!;; Ef? d,::':; 8',; 9C ~., .-:;¡..t.. 92 3·,: I5~-'~;2,=,538 :~)::~2~6·i3 6,(;~ 5~13 5t~.8=5¡)3 :Sf 3-5!:55 ·.S,E5~~5E)5 :5 )" ,3-~ Ö ¡;¡ B f5"f:~t3a~, f:58~5e8 f)B3=-5~ì:3 [:393--.55'8 Æ59~6C ~3 f\) -.~e08 61;~~~623 e 51 5~ ;}': 1~5'1 <8~ 751 ( f':~ '1 ..., [}." 5~ ·4" jl,~ ?5;} 3~5$ :;-..1 <.J roc: ;::J Ii "1.,,, 57 9 e -.-, '" .., i;,:t J_ '~ .. J..D.CLlXra -¡jO j110d~8l."'ftt¡:'!ly ;:;;.LJ~ êLnll -;;0 \·Jea~;: yellCl"lr¡ :jE:.lrte as Ð. DO Tr?: ""J":L f::., fe"t"f ;3ilt s11ale la~ìe:i~i~~ ID.t:9l,>¡ÒeÚcte{t ;:"ll'::piÞle al~~(l silt fJrÆtle:¡ sli~~:h"Gly c;e_~lca/reO',1s:'--~}s0-:: ~GO d.1.~11 ;røl1ð~,:r~.. modeT2:,tely :1 n. dl"Lê &.. J¡j 'e è_ ò Sa'i1l8 as 8:1;07(.;,. S·t1br clay slw..leo CO¡"',2} con~te~lli:na'G3d;~ 8i1 'G E;lla,le~ soft to mocle::at~eJ.:l indr:j.~a tea.:~ -:;;08·>': c aJ.c2,reo11s ¢ Cl2.:r sl"1ale~ silt. -s11,ali,3 ir.t~?:rlH3ð..ò.,3,d., s15.ghijl;r cË':.l=" C:8.?790l1S ill 1='Hxt f::;~ l1Ø8J-r ~Vt:::lJ,o\~'t ijO 111 ô ð..i llJrI g"i"?~¡/' ~ sc-:J:t ~ CJ.,~;y t 8h8J~~3(': iIl'¡;ør"bf) deled., merl:L"cnn graJ7 D,·tui -eaJ.€! h~,:n,li21g K}:t:Lcll n1G~Y rep:caser.rt 1Jed-è.ill:g O~-~ :L:nfil tr8;i~:1_tY_':1 1:'-'7 c1:ri 1TI1.1d.~ sligl1tl;¡- CEilc.ar(~OlIS ., ~,''1 "O~~:r- íj ;s ,~' il'ld1;ll~E;' tG(]~~ S~3..111B a s a "'DQ'''!e.-~ Sil·t 81'£1.1 $ t f~G,;ne '~la"y SilBl.e j Ï1J3aJ{ yellö';:l-, ß}..ight;l;.? o8..1carecnlS, ills.·~;e5.. by a·¡~:lle<3:r 'GO have Dee¡l Gorr¡~a,m"""· or in'(iaru:clx.e¿l. :in dx~ill5..1'lg;:i Same ~~9 a.bove.!! Clay pale r:;l').ale~ zlig}:rt1:¡ .r.codeJ~ately úaloe..r-eous~ to 1,;[881<..: .9001.13 ind:t:l::~t3:tet1ó C lr='..Jrs'tollc ~ 6i1 nhjclera 'èely i11¿b..1...1:"a. ';jeêL~ fJ. t\:y;·j ·:·8.J; DO}l21Ce01..1.G fz~agrn811t 8."J C $]:.tEl.l,3~ r;;i~. GB..ICEtreOllS;; tan{.~,:)c1. ~~oËlc yell.}~~l aIlf gl~'::";Y"$' lJa~2c18 :t/16 to ). j~2}.G}1 s().f't tej Tn()(l(:?l"'tlt:øl~y" in.d.~.:tí~ated{;J c <to 1TlÇi¿tÐrÐ~-~el:y'" sligb:~1~~7 cE~~1·GG':'~{:7(.n1;::;~ 8o.ft! ;Jlt')el~l 'GQ i'I ssi:le..) ua..JJ0 o ~ 4'; S2Jl16 çl.~:; .E~)07e h ~~p 1!' Si 1'~ $14 o:n·8 B-11a "c#;S~l'"¡¿/' g~ain Banagtone~ TI~18 ~ïøl1Cr'":r-¡~ t1.."C~l~B,tGd~) :n 0 11~"- 03. .~" C2..:e eo 7j" S :" so f ·t ·~o moder8.. t;91y- in.- H;Pl-~2~:r ~::1'1 t 'cr 110 SaJne 1../8 'to 1. inc11 I a"t S:U5 '.1 clay 2;.L)o<~re sb.ale l1e..nd..~:: ';ú:.l t 11 "'" ;:;1.D 81~;e·ll fr2...t;:ncn t rro ... ~(=- f: '~--::' ~.? 96 9; 9f s· Ie ,~. It,:? j I',:; :3 ~;,3--6!-?:3 5-~56 3 663·~~668 r:;C;ß·~5?~) \ b'?~.3,-,bE 3 f3~693 E;9~5-,703 (~O~113 ?22.-73~3 e 7 ~ 5 \~. 8~ 5~¡ .2 ~í .'J¿V 5 2'~ '75' R'J 63 ~'E '.' 5) "" ¿,.1 ~ .-.'<: r:"¡" 8'15\i e ¡~ SB,11ðJ:" ¡ jl 'Par!:.~:,) 11'CJn,'~-' f{O:t -'j 'GO Bod32\9, tely iXlC1.1;G~'I,~.,. S.b.8..J..:~ ," c~1~aTeoL8; ~8~k 83~8:i} l.)ec.s 1 to 12 ix::.cl1.$E¡ '~h~lCk~ G lð.y shale I::10 s·G1JT a:b 632 't11531 .Layø.r sz fraGments at 624 Q~d ...., '1"', _.'_J.:'. 3:t~ø:ll S:1me 2. 8 '_ I21'tç3:~;beëLÖ_eð~ t'\iJJ... cll:ì..;Y" shale J" sli.ale SD1De ~'-'s 1''''~' .¡ '!" 1-:-~·2... ,",... l~ a'bo-\t:3 ~ C 12~~?" ·sliaI f) T ¡3C',J"B:~ 8·0 ft~~, ~¡ø21c ~rellow~ sligl1.'tJ..;l G~~lc~:t¡.A~ ð.øe.'trc'Jrf~ð..úy cl:.rilliilgú C 13Jr calca:C8CillSs ~ . yeJ..J.o'\::¡ s.ttal £~ ~ ~"~l 't~'J0a~:: ì;() lue ct:L 1.1111 é;::c 3..3ï s,-:,~::>-t! 210 oedO.ing: 8.1?pai'-'e:a.'t;¡" S&l1e a 3 a be 1tE-- ~ Slightly Eilty in ~8~ts~ 8G..1}10 a::; .t-l bo'v·e:-:. ..:1 :_C (3~~r 8:Q.{~ 11 f:l~ f1..-;g:r~le r:r~ S 8...t ?J8. 8-3 ., c sl"1...0..1::J.:. 1I:_;;:;:l~Lt'UH Ë~:('a:V:f; se:,1TIe B"B Ð..bo'\¡-eø 1'·1:1 èLeI1 ø fO~1l' :r'8e"t¡ e:c1)s,1"Öloð. i7C~ drilli11~g9 Same as ab0v~;~ tJÖ D'$ð.clin.g: s,'p-par0nto 04 406~ Sam?! a.s aoenre, S:'tl'tiS'~on0 8..l1d Ë\E".:n(lgt().ne~ 've-ry fi.ne gl"'e-..in'J nOl1'''~ ce"lce..l"e011g"~- .œo(18ra,t.·al~;r in.:lï.lT13."'ç,9(1~ 'beclèling p(::~)?l;1 Sh,C1JiT~~ sozna d-:~~pß 01 alJo'tl1j ;:; d'Sgl"\Ð8S" .P~ fe1.i in;¡jer~ 1:)-8 ð.d.8ð", layer "3 $ 1 ·GO 3 i nc he s "(; }15_ cl:;~ 2\1 ClaJT 9.-11Q "2J:llt ~'1~~¿~1: ~7ello1'Ÿ .¡;(") rÜ'BQil.lli1 gl')8.J':;:: sligh~~l~r ';~al~~9.Y: eOllS ~ E1('<le::'i:t-telJT il1ðJ).1~2:¡ted·t b·s(ldin.g :po or 1:Y' 2'J Silts"~;on8 aJ'3.d ~~~?:.;:lêLË;torr:)~ 1j{3~:~"'3r gT'air:,.~ nalø t<: ~le.?Jc ;rello1'.r~ t 0 !n() :iEÜ: -9. (lips oÎ Ilr: Y',;>.." ~:::2,,1 q,J...¡" eo 11.3 iJ "poor l;T .t.'J '''''J::I Sil t stolle 1t,:jr~l :f:17:\8 gra:lll, "'Dale t,(j vJ0ßJ.r :nOTI.,"->'""·c:.a.lcËlT'Sou.S¡ soft tc: c~"\r1-}O~~1¿~ceou.s f}:'ag!l1BTlts :1J.1 f1 j:Ç;;·i_~ 1;¡;-8~:;._:" sl-:i)'~;Jn bv.-t ð..i}?:~2.1J"P:rO:~"'" -t Del1.ta.li'L1Tn e" t mO'(j:31-tl¿\ -tø177 fe~': If1,yey ¿..,~ i.m.9.Y¿¡ely b 't;O 7J.3=-'714· :t'f":$Yf~ ;:;' C rnGéLi'Ll:"Ti gra-;l J T:o.n.=,ee:ol c.:lre0 t.1S 1: rnod'3r'::'1 t, E)l~¡ iD. è:.l'G.~ ¿j t. e c1~. 5~5~ Siltstone, yel mod..era-tjely' irl¿L1.:rf'þg·;jedè""' $ se,J¡cly ;nol1·~'Céllc~~eOll';37' a:r!.d il1-Gcrbedded cla.y 8b.a.le·~ S8"Zi1~:; /?"S e~t;a1Jð:_ b~)c18 c' ~(ì !5 i¡'1CJc18S tl1,ici-;:,~ ~8""-"'- 10·"'} " ,.:¡:) _,'4\.):.) ~..~.,CJ9 11() ...¡....:~. J..:L:~ J,:'..;3 ..,",~... .... J. ~~~ j " ~ ~ ~.. -....... .1 ¡ :"~ .'... ~:N '; .' " '1:') T" ....... ~ ;'f' Sf 2~"'= ~~'i.;:3 ~-3 . ~~I{81 ?E~1.~791 '791-801 Ø)1,~8Ll. el~t..oN82·1 B21~8 3~L 8::51~8¿U 3 :~~1=85:L 851--"'"1t85;? ~ 53 851-; ~ r5~L:;S i.'1 g'.) ~"f.Go 8 ~7 ~~) e 3.'75' .':';...' b (~ :l 0' 9; 1-00 a ,-' ....·0;)' l(}~ 1 i"I ;::.1,;," ·-..\.lö v\. J gs 3~ gJ 4~;3'~' 5;;.251 3' e c ';iO lTIC;::J.Sf2....St ~Lhal e~ !:1.:-!C. .;::)I-j¿:; "'..., ;-r," >:).:;~ .1~ "": i21(11.:c~8. "\;8(1;- "'-·'j,}_0 G~1 1::0 sJ_j~gil-¡;l;;r e:T'1JI1"'bl-2(:l b;;r drìl1i11g;, beò.dj.~ú&~ G;3..1 C2!.1~::) 0 l...1.2; --,)H.l'"' no~;~ .::tS C l"t-ùJl1 ë,]. e ¿t 1J;ÿ-" -1M.~' 11 ., 'n~ .".;,...¡......--....."'...o·tl Iffß~¡ Sa.J1¿tS'00IJ,'0? fi110 1;5&.1"8 ~~~o ~J!e,9..k yellow~v,~eel:=- yellr.)~i·l: l1Cll'-'CŒ!.1~;3.1'80LU3~. s15~gl:tly al~gilla..c.eo1.1t=;~ illedilt"D d9-orosi "GO JD(J(le~r-ateljr inð_Ui:at,3d.~ '? ':J ~ .....tð f-J 2.ppe..r:3:ntl:v llll:jtl~~'¡.'~:l fi e ð_~: C s}1.:'1,lc~ p:;tl:_s; yøl101J/~ to TIloiel'ately ir~ð:cú'};'Sì,ted<i sö:f't :;::J..:1.ghUy ca,lcareou.s., Sa.n.d.;3to11e~ very firu3 g?:2\¡iX7~,; pa18 ·:~O '!¡JèaJc ¿r911·))'~~~ g:tee~n;""'yellol<¡~ :a.GI1--C.s.lca..r0lYLtS:: med.i111ü to high porosity~ sof~ to moderately indurateã~ no bedding a;ppe"ren. to &:?1..IT1e c?,,,,g at·o·7e ,;};i .;~J.~. 01> 75!i of clay 'SlJale E:trtc. Ì'13...3.itd.. Ë.E1.nð~r 11.7Jè b-t;one ':>ì '.J al;n~r6 1)aS3~ SB"l1.ð..ston.e~ ¡lIl~~ '(~o \T8=~':';'1 nC1 grai,rl;r same Ð~'3 2..'Ö01:"e; Slili'bt petrol:c~f:;;T·Oi.1~,g fJGC1r ~ S61Æ2$ ,as 2..1¡07!~:; 0) Same a. s a:t-,O"tjÐ Sf: SS.JI1e -as abo~-'\~;) Limestön~), deZlge~. -ffioð"ø.rat€:l;! )~11dul;!ß~ted~: pa,le Jtell!ot1¡.-.?ecl"""Y~'3:Ll·;~rl,'$;; ßoe"t'tðT'E~(l cal"1.)onä'~aolls f'11~3ek:st· a "f'{~{J:J¡'J' "th~,n ~~a,}2iJoTIaceo\1s- lruü.5.1laa,. 1)adclin.g ¿l5..f:f'i cl.ll '1; -êc - (lete?illll:"f~_"ð dj'i?~3 of $.;ppr~,ximatel;{ 5 deg14ees{'{ 3~5; Sandgtone~ ~ame as 6':ì $ 1.10 'Pe~t:tolif.e¡~Q·ûs odor <',c Sal1d-rrijcnle,. "lj0ry non-'W ð2.1;ce..:tÐOtlC1~, ~,. IJ..Ti,z g.r·e.i1:'~~, merli1.1JIl to 11i:gl1 pO~<$csi.·ty;, ·tt) m[:(lor,~·tely j..nd:ti:r8~ 1.,:;3à::!t ljE~d.diIt<f; !80f-t not a·ùT1a.l"E,~~1'i~ ': " 01' 5 ðJ3~gr-eø 3~ U.l·p9. &=3..ITlt"ð a. s a L<~ 1;;'3 c:. Sa.mE} ;3..8 aCf)'(TG . S,~?.r;:;a 8.. S S~;,.me ,9, G So:ft:~I.'> ~~T.U:~ ~7f::.rJ:~:ì fx i.~1}1€L", a.s a~eo·vet. ~9'""=' -.j ~~.;-' "~ ....~ - :':~:3 - ~ ..., /(-.. ..- .!.:,_,f::n .L2,'·-ì 1'<~,";' 12::-; J:;;';~) 13C .. . !./ D g:gø cr .-..~ ~ 7:;':,,·:.835 3c;t;~395 9(}C·=-91() 010..920 9:80,=9.3() 930~9j;;O 9~:1{>.....95(; 9fiO=96C' e )1 ~i :__~ ,:1 ".t~5~ 8,.5~ ,-, ~, f:J' 57; rtr,\ b"' 5ii e w~~~ Same as a;)a78~ (}{) ?5JC a,!l~:.. ~31J. <":,3 8112.;~e~ mo;:1.3z\9..'t;el:T GËt.J.CS,l~t-:Ojj~S soft} TtC; c:etlJn1)lø{1 by èG.~111 :i.:ng~ ~~ calcareous) pale yellow·. i:nÇLtll~a.-;>3·i:.: ertmòleð.. and. 80}ne·' þ:3..iS yel.lo"i{j¡ On 761 Sj.ltston~~ I1mc 8--~(j~.:~E: 7.7:'i.·~j e::t;lltxe{I~ O~~5~ Clay shl:-"11H;; l:L€.:ht; grE:;YD illcd;3T'G.'taly c8,lcare011;~f,-.ì SG·!1::g 1.11te¡~oed\:U:;d 81.1 ~~y lir1,;);~r¡fOJle,,) 'l n 5; Sa.:.1.élBto1l8~. '1Je:'.~;j. fine g:r.:aixl;, 1~aJ..~ to tieaJ~ g~c'eEnl-n>yelloi¡~ mùdAsrat\31y calcaxeotls :171 liPP01' sligb.-tly ea.lcaxeo'fJJ3 :L!.e8J:t fJO'Jtom 'pal~t!! madi1;.l11 high po~oßity} aoft to mod8rately indtœated) not 1&"ell (1~~rv'31r;ipeð,~ e'1-?1Jea:f"J ·to ~be a1J01.1t 4: to ~o~~" co;..! oeð.,{l:iTI.(::; r-j ¡ d'ðgt' ae Sj;~ SE¡,11Ò.S'¥jOl18',) ;!~~u':6 as a.ÒOVB~ f;di "[;]2 a. =f(~w clay 31~_!~lle intar"b8ds 1 -GO 2 iTlel1.Bø ~}:r1.cltr. 1~ Sandßtone} same aß a~o~B~ 2J Clay BDa~8~ and silt B±~le; 31igh~ly calcareou$~ pale 21ellc1:f-> r.:ci;:3)~;.~2<;'t(:;J~jT iz.¿lvTËt'0eclj; beddinÆj clin¡3 3 to ~J 3¢ 5 ? St?¡.:ncl·5·~;one ¡. '!/8Z';;'" n'd pa.le :;""'311 ~~ðl1o~¡1;! nox1:=tJf~lcaJ:eOtlg;> 1'11f;11 pOl~03i t7~ soft "/0 D10d'31--s;tely inc'LuJ:-a. t;:;;cly no tE;dclizlg dBl;ørmin8..bl·f; ~ ~1 !n.·:jerrCèdét~cl ;2.if~DJ.:LS1;o:1.e anc1.. cld~Y sIlale7i S~lle ty·p0S a.s ;:100V0!) 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'LH9..:riíft!t l1ilg}Jl;y'" r3a.lcÐ..:r-f30·:J.C~~ ~1,1Ë:8.J: :vel.:L)~4~ soft to .mod!?;re.:;:;ely il'l{l;~lX~Ð~ \1.ir'~ of D~'p~p::01t1.mét·t,:~1:7 3 degree8?3 3i1 t· 911<:'110 1.li-¡jI1 Gome S};; 21~l;y J.f~?,eXIIS a:r:-d pocke'Js~ hi{~hl:~,~ calcßTeo¡J.s~, p2~lo ~G{) 1,~1e;$,k:~reI~~:.o1r¡, soft ·to modera~;~}s·I~(" iA1d!ll~atedc. L5V V8J:'y~fille SQf~~ CJ gi~a.in./ Silt BI19-Ie;; &11.\1 san.ð"st; Olle~, 0¡~,f,J bigbl'J.7 D~:11ca.2"e(.'hls~; t~r2Etk yellen,if Lime~r~or:.eJ ligJ:r~:; -;,;0 ,m¿}éL:tun l~T'e~y~ Cl'\¿¡- tj t,all ì11.Ð t] V$:Y fin,slil ,....,;;)~;~ r1 JJJ:.....'-- ;0..:.' 1 '? $andg-t0!10;t ·v;5rJr--.fin"~ grain! 1;~eeJ.{: J}i",~11o:JJ;; 111g11l;}7 argilJ..a.(~eotlS, J:d,g.à.l:T Galc$..rtJ{)ll,g~ sc:ft )~O raodel..,~·tely il1dtw,,:,.8. ';.;~)d.,~ "D3~1" 1fl_~..t rL::~ ~:i tBd. 1J¿f ¿h4illi:ng; 1"~'f:;. i;.11 .- ""'~ ;J~O' some iTI.·~~e:r"miÄecl r?ha1e., Cla.jf· 8J:U:l Gil b gba,,:}~?) :iD'·'~;ËTr.Œix8èL~ -pale ~Tel1G"d~~ ;';Cf~0 ';';0 }}J¡Jj~02~:~1';¿'31,y h.igl11y c,e~lca:rectle·,!; iZldw:3.tedo') ;5 '~ Clay '3 })~\1 e ~ DandEicl mecli1.w gt-ay tely indurated~ no E\11tt 1'r>38k j7t311o'7N""1, b$ddinf; [31:rpa:!:" ·Z~Q. 1;_~ ),.._::=\.] tt1A~. .:"',~,~l;; ·v-"'¡'.,l-1"', _, 'f..' V -'-"'!Ù ~').A.-__~I' I;.' JJu. '0,...,_ ~srall1 8anà.stc)ì).·$3 1'(-3.1e to weal;: ~rGllo'v~ mod':-)::Ettøl~T cclI.c:·::,1-1J:"ø01.1.S1; soft; t;o .}liùd=, e¡~,atel:y~ :1..nc1.:L"L'l""f[iþ 2i~5~ Cla-:l ~>bal·e~. '8~.Jn·ø e.8 r-- ..:.j.... G J. u", Clay sh·::11(:¡ E:t2":Jl sn.::J.dst,cn.(-) ·b,~c1.d.,;)(l l;:?,.JTer ß ',,¡ \ v"e,~~,~~··..,~:fin~~ grðin~ in)¡e:r,-- p£cts ÒafV~? disinte= ;7'8110i:1 1;0 IDcdiUItl grEXJl-J ';.10 rrl(~fJ..eT2t.·tely il1d1ì.:ca,ted", g1.""a teet d¡~ :1.11:ìJl.g·{. ifi::;.a.J: k~gbly c~lcareouG C12~~1 S11ftløfl "'i¡\;'8Bl;: ·c') ,~L~l.I1 11:iglü.y C8..1cl~.;,l-'eou:s~ ÓJ. s:t:r~t8€;:C5:.t'8ð.. b;:r d.rilliT~g~:1 2:.Ti.d TI11...1c1 "'- 3 ~ 5 :1 e la.y 811.~..:~ t9 ;, -!:¡I'Bal:: '(~ ~.J ;l·v"lJ. calcareous¡ soft G,) 1noètert~·~e.ly ~~ i.l ',';y , ~'., ¡:~ar .¡; S <'t O,~:5 ¡\ Sandstc.::rV3;; ~I:-:3 3Jr ~:r 811 i,; kV~·g:~ t?e¡'}o.,,;/,ell (1 1:-J:; sligl~~;jJ.;i· G!.llGE~11fr'3011~:;~. ßO::'Cf< ;1,1(} è·~~ð~!iil1g EGj.':_~ ;~ 6] C la:r silt.1.1~~;> T:!'3ð..:i U.:1 ;7;rf),;t '00 '5J..1.11 ~røJ..l O\~r 'i0a,n~18{1;,~ sli gb'f;l¿l" !j8..1c(~rf?;otl;:; some co~tamiTIation '-:,~i"J m,'j(l!~ra £\i:; 8:::L.;.- TIl~;t t,:::;:C' ial :fx~ Dzn a, Do 7r'::~ ,'~ ~12,~ 1~~5(~ :'':>5 :H5ð 157 lEg 159 ."."'""'. ~ :" i ~ .,p, 16_ 16[5 lES 11·D~7<.->I l?? ??c~118;¡ï l1e7~119~;¡ 1197--J..:;;01 J~;:aO?-...J..:317 1,317=<1:~2<? 12,2,?·-123~j 1~237-,,1~;·0r¡ 1:2~i7r~12'5?' 1;35?~1~;6~? 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"').;)0:) Ct,(;V'o;.:,. :~:': ~","(>;.n .ç::i~ (";t) '":;;J :r',o';:.11 '~):L ·t ('.ì::' ~:'.i,~:"~~ ·'tr~':.-:, t:;A ·'.if: '8 '. feLt 1"'.' ~5 :.i "" , ¡; .; ,'._ ~'J """-',,~:.,..' ~ ''''; '-;..Æ", ~··~:n 't s; ~.~ .~" 't;'&l.i',\·~ t: ~-' :L~"; 1:\~ tl" ,. 1 J,;0~:V t<20L,~: X'() :,·;.-it' ".],':,....,-::.'<" D~f ttC;~; 7~'t.~;"" t.~.:, ~~,~ r ':.t~L .~ }:,/O «~ ~,: ..-~r 0:; t;"~ ';; :"1 f 'J:r :;:: ~", ~2<l..... sor~ Te~3t l/[e11 Nt:)., __2 <):;~? lI.Q¿, 2(15 8,:1;3 2{:? 2·(ß 2·~,9 Legged òy; ~~'if..t- 6S15--ðß19 63!53-6G?3 6'780=·6796 6f396.-.rn6917 6982-7002 e ~,- ~O-''''''''''r ..;;¿~~tf".:,¡,,~ IS 10:: 7'Stt 1.2' J..8~6;¡ 16' S:3.iüuel I{eller e .~, '.1 :~ Ci·EO:LOGIC.A.L StffiVEf CŒOLOGIC LOG ,~~:~? -"SCT i:!) t 1:lr~ }zgilli t~j~, lani1'laJ. color bantling reddi sb "brovro. ~to gray green dil::¡ 83 degcHegj'? minor slaty c~"e8~vagè-;_ micaCeo'CtS ba:n.ð"sl 'rlal1es cr..t·-~ing acros-s the lan1inal "banding;:> SliGl~:£fusid¡3fi frE:.etuxes 'Oa!'·tlJ'· ooa·G;~;èi,. vrl t.h ca,lci -te and "'9:1'1~i ~:;e cu.~G :e.er' 0 ss 'banding~. dip 6() d8grea¡~.¡) --\rgilli te sa.m(~ Ets a!Jove~ 1§;rF~}t grearl \·1i th redd.i;3.1 l)I"Oir}x)~ "ba.nd.s (1::.1') abQ1J.t 83 ð;t~i~;..">()eg~ ola3;y i.:;1;ðe~·T3.ge c1e:fixIBCL l)y miea·c.eOL1S :plZ:,11E:f;;.: ~~.r g1.11 i ·t -9 l' g:.... 2,Y ¡S£ 3;3!l òa,~1 (is rl~ w':"l'l'te~, mica} sla ~J..aaV8,€;~1~ èss-::nl-£iall:? SE~,r!l;3 a,s i'3.tJove'êI di P 's ;80~85 (1.02' ee B: sli{)lcansi dad ~SU:f 1'6.(;$ ß:: ~A.'rgil1i~Ge Sé.~~rr¡('! ~lg:1.ò'~ve'T l$lninal cola!" òanding g:ead.:lng fro!n b_riclr ~f.."'t~d, wi '~~:h greenish bands, trö gT0:911is11 gray t.¡i·tI1 SC8,t'tt~r8¿l briol~ l-"ed bands~ bedd.ing dips 80 dcg:è'ees, slickensid.ed s'U.:rfac6e '¡lith oalci<;e~ pyrite" diþ 30~'(O d.egrees. SlatjT c1eavage~ .å.rgilli·ts S8lliB as ;3,aove, small faults Off'S:3t bedding., IT,.. Sé G'$t1:~~cgiC8.1 SU1~vey Jra,irba.n.1-:s IJabora...t,)-ry hO è:e~r·t lvl:; C Ij2.nTna11 {}-301o:g5.. ~t; -25- 5800 ,U $1\/ '", Si 177 ¡=>.s 0 11 iir' TW; / P.P. 30'>-0 pl. 35" 5900 20 40 60 80 100 200 300 400 RUN 8 L N - LONG NORMAL SN - SHORT NORMAL 6000 6100 ~ t 1; ~. . ~ 6200 ;¡: (p I.>:) 6;2. 6 s-~ 6300 6400 6500 ¿S-'f6/ 6600 .- /c' : vi-I vi -, ! '::::>/íL~b/1 r-- íh ~ ~~ ~-~ .0. ......................y....._ Clay tohale, mediuIll1RY,""'" _colored, silty; allo ~.I mediu.... gray siltatone Clayatone, medium-gray, oIl¡rhtly mieaeeoul, lilty, hard; ine¡rular Indure; vermicular pyritic .tre&b and aøregatioDl up to 1 in. diameter. Am- monia present Clay """Ie, mediu....gray to medium-dark.gray; tnoeef l¡pt..tAt_u.... light.gray '¡,Itato... Biltato.. eonta ai~ ¡Iaaeonlto at 6820-6880 It. Trace .r light.gray very fine-grained __ at 5850-_ " Clayatone, .. In core 231 above, oIl«hUy 1...liIty. Leaf imp,-",n at Ii8'13 ft Clay .haIe, medium- to dark.....y; ~ to 10 pe.....t medium-li fht.gray hard mltatDne Clay.tone, 60 perœat, <_Iy and irreflUlarly interbedded aad I/1'1Ided :~~~:::t=~;~u=~~~e~ar~~t,:~~~~n:~ thirty-øecond of an inch wide Clay """Ie, medium-gray to medium-dark-gray, silty; trau or light.-gray ai1tsone. One chip of clay .bale contains glaueonite pellet.&; another contains quartz grains (medium .iIe) in pyritic matrix SancSltone, light-lray, maeaive, hant; i~lrU1ar fraeture: gr&inl angular to 8ubangular; rather high sphericity; 90 percent white and clear quartz. 5 percent bluisb..green glauconite; remainder is rock tragmenta, abun- dant liny carbonaceous fragmentl; caJcareouI matrix. Lenticular and rounded masøel up to 1/2 x 1 in. offFayiab-brown aandatone with oil atain, Many pelecypods Siltstone, light~gray and dark.greeniah.gray, massive. mottled, hard:' irregular (racture; abundant green glauconite; some unclstoM and cla)'1ltone; vermicular markings; pienta. pelecypod remain. common SlIl.Iltonl', moUloo mooium-gray Lo mtodium-dark I'ray, hud: motUed be- cause of varying amounta of argillaceous maLerial: irregu1ar to vertical fracture; very calcareoUII; grades to limeøtune; briaht-bluiata.green glau· condle (vmmun; finely difIJRminated pyrite; 10 percent aubrounded clear quartl grains; paper-thin calcite veinlet.l; abundant. pelecypods throughout Siltawne, ml..>dium·gray and grayish-green, hard, mollled with argilla· œou.. silutone: \'ertical fracture; much light·blue-green glauconite; vermicular p)'ritic strinarel'l: IOme aand I1'&ÌßI .... Siltstone, mottled medium·gray to medium-dark·gray, hard; vertical fracture, Made up primarily of quaru plua finely disaeminated pyrite, ~a_lt~~_~~~na_()~_,I~~c:o"il!~_ a~d-e~~~~_~~~_.·t;_~~_~,g~ grains; very éaleareou. mãtrix; -rare -pyrite- noduleS. Silutone grades to medium-light-gray limœtone. Many pelecypod shell fracmenta Argillite. greenish-gray, very hard; eontains minute cr)'stala of pyrite; laminated color banding probably repreeenta beddin«-dipl8f)-. Thin rilnu. uf )yrite and brown calcite coat joint.. of .lIckenaided fracture planes. Fra.ctun! planca dip 2,5.- -SO- Argillite. as in core above; but with gTeenish..gray and grayiah-red-purple laminal banding. Fracture. dip 60- :¡ Teat 8, 1i905- '1002 ft; Fi_i¡¡ht bean. Open 1 hr 25 min. !lee< 4030 ft 01 ......,ut mud. Cia ......ure 2120-2375 Ib ' Teat 4, 5901-7002 ft: Open 1: mia, but well did not flow. rose 5471 f,t. Botto m 2000 recovered fluid ..u la8 eu showed tnœ ef talt Tea' 5, 6819-7002 ft: Swabhin, made inside 2 l/Z-in_ tubbin, was run to 6136 fl. Tested: Ult '",ater per hour with volume of gas on each run of No oil ./f.¡t}-M,3 fiGURE 54 e e - . II \.'LðW'~ r-- - 1(; ;'3fLk :; ISOPACH AND LITHOFACIES MAP,' J-l, c;- ~,._, - -~. " _·.C·-,-, ::.,:-,,:.,;::'.:,;. \ ',":.-':.':: " ~. :. .....-. 'lø-Io« '-Atigaru 'Point-1 750 229 <1/16 ' /00 -oas- South Barrow 3 748 228 n.d.* ,()()-C3~ -South Barrow 13 181 57 1/8.4 /0(>-01.{0 South Barrow- 17 503 153 1/3.2 ,CÒ -/t;¡ I Cape HaJkett 1 178 54._ <1/16 , Ob-oL/:3 West Dease 1 431 131"c 1/8 1ðó-"t Drew- Point 1 71 22 1/16 /00-/00 West Fish Creek 1 252 77 <1/16 100 -I()3South Harrison Bay 1 667 203 <1/16 ioo-Þ3f.,. lko Bay 1 643 196 1/3.9 /«J-i}ro lkpikpuk 1 580 177 1/16 IOO-'~ Inigok 1 150 46 <1/16 , Ob-' 0fJ North Inigok 1 136 41 1/11.4 /00 -I5Y Kugrua 1 616 188 <1/16 ,OO-lst. Kuyanak 1 587 179 1/11.2 oo-/~ Lisburne 1 ,(1) 100 -Is-<{ SOllth Meade 1 714 218 1/7 /oC;J--frà('¿. Peard-l 205 63 <1/16 100 -,"3 Simpson 1 520 159 <1/16 IOO-got East Simpson 1 282 86 1/16 IDO~ East Simpson 2 87 27 1/8 'Db.. en- South Simpson 1 814 248 <1/16 l' '00 -'6;) East Teshekpuk 1 1,038 316 <1/16 /ðO-¡c,S" Topagoruk 1 782 238 1/16 10ö-:CNr Tulageak 1 812 248 1/9.1 IOO-':J~$" TURa 1 i k 1 140 43 <1/16 IDO.o'{.;)Walakpa 1 640 195 1/7.7 I 0() -óC(~ Wa l·akpa 2 613 181 Il7. 7 ·n .d., not deterlll1 ned. Unit J-l, which contains the reservoir -Barrow sandstone" in the Barrow area, ties unconfonaably on TR-3 and is restricted to the northern part,of the NPRA. ,).1 is Earty-Middle(?) Jurassic and coincides with foraminiferal zones F-17 and F-18 (Anderson, Warren, and Associates, 1974-1979). - The thickness ': of J·l is related to its truncation by the overlying mid-Jurassic and basat ·Pebble Shale- unconformities. The thickest section penetrated is 1,038 ft (316 m) thick at East Teshekpuk 1; this section extends to the west and paral1els the Barrow Arch. Northward, towarel the Barrow High and the Barrow Arch, unit J-l. is progressively truncated by the basal ·Pebbte Shale- unconfonlity. In the eastern half of the NPRA, the mid-Jurassic unconformity deeply truncates J-1 toward the southeast; J-I thickness ranges from 580 ft (177 m) at Ikpikpuk Ito 136 ft-,(42 81) :at North Inigok 1.. _ ,( ¡ .:,.-' ~ . - In the western hatf of the Reserve, trUncation by the bisal -Pebble Shale- unconfol'lllity' is more gradual. and 140 ft (43 m) of J-l is present at TunaHk-èl.; The-S'.lÌIiél~Ju.ras$tc unconformity probably truncates J-I caapletely_~·i". an èást-west direction across the middte of the NPRA. .:- <- ',' '- _ -', _ 7.~ '_.' .::~ _ "_,- _" <~" ..",':. . :>";~;'.{~.1-gz'-C-=~lJ¡fit=.c.f.;f¿¿o-fiitstš~if--ii¿:ffCål'f.i';':depQsUectshale:un1ts-that-"coarse.-úpWltd:: , " . into':siltstone or sandstone. The only econOllica11y important sandstone in ,J-1 is the -Barrow sandstone.- The unit- becomes increasingly argillaceous , toward the south, away' frOll the Barrow area. At South Meade 1" I sand-shale ratio of 1 to 1 probably denotes the southern limit of any potential reservoir rock in J-l. ...,..... :.-~~~-.::=k...,:.-.:.:.:'~,.- .:--::':::;'="~-:~~-.~:--:-.:-:.~ --I "nn_.__,_.__ -- . _ .. _~_'_H _.___ ." '--___._____.'¡_~__ .' . _ __'.____'-_'--_ _ _:,..-.....--' 0:"_"'" _ _ ..:, .-.~~......;...."..,,"," -..............-''''-''....-.....--=---''-','''--.,... .---..----'-'-. --"-.l~.........=-~,.""'"...._=.~.==.~-"''''. ="'" ".'--. ':>f' ." I I I I : cr ',' [ '..----1 .._\......."'..,.',' .--.~ ~'.,' ,I , --I [ I I I I J J ] ] J -,..~]' .... ..,-~ -."'-',' ..~"".='...-'---.=--.-,.,..- e ,,·,,:t/,<~)','.GURE 50 ;......... 5dt-j!f¡Ï;¿~ S-S.. +- cjl:h to ..',..'> ISOPACH AND LITHOFACIES ,MAP. TR·3b ;':''-:';·~~~::'~~~:",i¥_,~1,;i~.:-:: ',__ ,.;<- " .,.". .' "~.. :..., -::.:. , '-~;-~:i~~1~~~-~:3;}.+; . ~i'>" .",-.:"'. - .-" . ';.. ~ . , .. .. .::,. ';_::/~;'--'" ~ó':'·;":._'.'k:, " ~-'~ .,. ,'<" ....... ".~- " . . -, .~E-,~:r~j:;\-;~ -" Sand-Shale Ratio _.c-;" .' ··,·:Thic:knes~ . Feet Meters . , :¿,:~;V·.--'~.,~ . ;;,',. A ~ ~'_~- -~::.;- ~ . ", ;",:¿;.~'~'/;' ;.' " ..... .' 3.4 '. 1.8 >1/8 1.4 1.6 1.8 3..9 - , >8 1/1.2 3.1 1.6 <1/8 1/5.2 2 4.8 "'.. .,'.. .' lC»i¡Þ.'f~Atfgà.~..töi'~t fi~j:}£:ll{;';'94""'; 29..,·.. íØCi~,<>~~So.uth"8arrow£3ii; ....', ""'i¡"'47 ..è "'14" ../00-"03'1 South Barrow 13" 50 15 I bC>~ South Barrow. 17 ~i'.. 80 24 ...., IÞb"'I()~>_; Cape Halkettd\,,, \.' .,131.... 40 ... . .'"~:"...'''~!(~t..~~::~.. ~~:;.êt,,~v7:r~~..,..,:...;~ts_l~~·,~1" ~~" '.' ,[ ~(,);;I,*.' West Fi sh.,Creek.. 1... ,,;.:,;.i 36..~<11, ,. ·.,t~!ii,5=:~~ti~~;tl0J~i,{J;';~ 'K:" . I 06-~: Ipi got l' '/, 44 13 100-/6"/ North Inigot-1 93 28 I 00 -,~ Kugrua 1 132 40 10(,) -15(, Kuyanak 1 132 40 100-1«"1 Lisburne 1 - (1)- I 0ù~,5'l.{ South Meade 1 122 37 100 -~(. Peard 1 216 66 10{)-1t;3 Simpson-I ----- 116 35 lob-~ East Simpson 1 151 48 Iló-~63 East Simpson 2 154 41 lro-'tt~ South SilllPson 1 143 44 100-lb~ East Teshekpuk 1 129 39 10()- 4I 5"'Topagoruk 1 150 46 100 - b~ Tu 1ageak 1 117 36 1þ()-J~S"Ttlna1ik 1 88 27 loö-<::H~ Walakpa 1 126 38 loo-04~ Walakpa 2 147 45 1~-C6 Sinclair Colville 46 14 Areo Itkillik River 1 14 23 ,. 1.2.' 1.8 2.1 2.3 3..0 2.6'1' 1/1..3 1.1 2.0 <1/8 2.86 2.3 n.d.* <1/8 *R.d... not determined. '=~....:.o.-.__~.'......... In the northern part of the NPRA, Unit TR.3b contains the Sag River Sandstone. The unit ranges in thickness from 216 ft (66 m) at Peard 1 to 36 ft (11 m) at West Fish Creek 1. with the thickest development just south of and parallel to the Barrow High. The unit thins toward the south across the Reserve· and probably is present only ill the northern half of the "PRA. In the Barrow area, TR~3b thins toward the north where it onlaps the Barrow High. East of Dease Inlet, the basal "Pebble Shale· unconformity truncates TR·3b. Near Dease Inlet. TR·3b appears to thicken toward the north·northeast. and it is uncertain whether truncation or onlap occurs. Unit TR.3b is the ·cleànest· stratigraphic unit drilled to date Oft the Reserve. The sandstone 11thofacies of the Sag River is restricted to/ the .northern part of the NPRA Nhere it is a sheetl1kè sand probably consisting of,a series of over)app1ng bars. Jhe.--u,rtt becOlles >increas1ngly silty; toward. the west and, s()tltbc.>-rn the Barrow area, TR-3b consists...of.J1118stone..IftCI'-':..shorefac1es of glauconitic. shel1Y sandstones. " s.iJ~$tories;;':Jߢ"",tiales ..' ...'.E:,.·."~'\',' ,.;~;~t;;--'c;:r..,tW;:;·i;·f<·.'..·".·"', " '~n~~~~Í1ô~-:jnd1cåte~ftWÒ·'areìs of 'partly overlapping bar1 i ke ~~rexes.~':0Jhe<; best;(~developed .area is in the. northwestern HPRA, 'extending·...fr_South" Barrow 11 in the north. to PeaI'd 1 and KlIgrua 1 to , the; southwest, , to Drew Point· 1 to the northeast. The second area of good'sand develo~t is associated with the Fish Creek, Platfol'll. A third... smaller "ar. of sand..located at Ikp1kpuk 1 may be an t"... .,. .(If:: the Fi sh ,treet Plat for. bar or IH.Y reDres""· ·.""..lati~.,,·~.:...';t:~>:;-::::-" . e J...5-~~ ~ L thof-~~¡e..s I'?ct¡:> T~w3b C c..OJ.'lt,....,Î1.s SQ.~ J(¡ve.1"" Ss.) '-¡~-rt~ ~~~h F;Ÿ, ~ ( R¥ 1: (N'o.l'..2.oo) I '1 "if :;¿ F/~, ç-p 'IG IN WEST BASED ON SEISMIC ~PHIC INTERPRETATION. 0' ., + + + + CHUKCHI SEA J!- a~__ pGU~ 71 · . . i I I POTENTIAL RESERVOIR AND AVERAGE POROSITY MAP PF SAG RIVER SANDSTONE I I Well -.-.-------.-..-.----- .-.- ...- ...._- 'Thickness .. Feet Meters Average Porosity (Pe rceht ) I I IOÚ-f&'l ~ i ga ru Point 1 100-101 Cape Halkett 1 100-04./3 Wæst Dease 1 /OO-I,\t . rew Poi nt 1 /W-IOC> st Fi sh Creek 1 /()O -IÞ30uth Harri son Bay 1 /00-;)00 Ikpi kpuk 1 loÚ-/~-Kugrua 1 lOO-I5"C. Kuyanak 1 /()O-~ South Meade 1 106-:J:J(. Peard 1 /O~-/~3 Simpson 1 Ið()-~I East Simpson 1 /ðC>-Qó3 East Simpson 2 loo-li1- South Simpson 1 IOO-tod. East Teshekpuk 1 /ðo-,c'#õTopagoruk 1 /OO-ðw.Tulageak 1 IO{)-o<t~ Wa 1 akpa 1 /OO-ð~KWa 1 akpa 2 1~-63( Sinclair Colville 1 90 30 83 85 36 53 31 107 107 66 135 105 141 154 143 81 89 15 61 80 43 -----------------.- 27 9 25 â6 H 16 9 33 33 20 41 32 43 47 44 27 21 23 19 24 13 16 15 18 15 12 15 7.3 9.6 16 14 8.5 18 22 18 17 10 14 18 18 16 19 The Sag River Sandstone is the sandstone lithofacies of the TR-3b parastratigraphic unit. The rocks are Late Triassic to Early Jurassic and are .restricted to the northern half of the Reserve. The Sag River Sandstone is a sheetlike sand body that probably consists of a series of overlapping bars. The lithology is typically light-greenish-gray glauconitic calcareous sandstone. The Sag River Sandstone becomes increasingly silty toward the south and west. At Inigok 1 and Tunalik 1, laterally equivalent siltstone and shales are present. The Sag River Sandstone also grades into equivalent calcareous and glauconitic siltstones, shales, and silty sandstones on the Barrow High. Porosity within the unit is very good in wells drilled on the Reserve. The lowest porosity, 7.3 percent, was at Ikpikpuk -ti--tile__llt9-hfts_tpqr9~i1;Y:.t.__~~:~~rce!'tL wa~ . in, EastSimpsuon 1. Porosities above 16 percent were recorded--fn-ã-lrwelTs-rnU\eU northwestern NPRA. A second area of good porosity development is over the Fi sh Creek Platform northward to where the unit is truncated by the basal "Pebble Shale" un~onformity. There were several minor oil shows in the Sag River Sandstone at East Simpson 1 and East Simpson 2. . -"L" .... TULA!llEAK I so ,m ._--:-, 12.14 15 ,.... Fí ...... ,. Dhl[ ~. . B ~. '¥ {.~. N~ ~'- ... ..... .'N.' '.: OTTOM OF S 13: 71 ßi ..". ...... _ . .", '. <II ::::y.g¡ "AG .., ,d:':;':: ~ !I,lK.; 50· -. . :" ::.18 1:§t;f:.·: , PEBBLE S""'E" RIVER TRtJNC4TED 8 : . .'. "I I '. . .... '.' ,.n '.' ION I ...... UN Y DA '+ .... ::'J y. . ....... .~. ., ~ '.' CONF""'... ........l ..... t.. .... . .ç. . 'u.-' . .' .........ITV ( .... + + ..... '. ...80' . :.....~. -. ><<<. ..:.., ."(..... . .:. SEISMIC) '. .... .' .' ';0;.'.... .. - ,.::16 .,- ..:¡:¡:. (.. .... :::. '.' 154 ,1' ".; .::.:.:...:' :::>..' Z.... II ,. ..' 8 . ~J.w p'DALTDN I I SkULL CLI" I ..... ....: ... ;:" ';: ::~.:.:: .....,' '~.,~ ,0,. 10!5 -¿,' 00 . O!. - .. ", ," :', ',,", '0 I ¡ - _ ~ N.R. f':::::>:. .::: :11~· :0:.... .. :::. 101' ~ ':..' IS ..ù 14'\':"~' .:;,I'~·· ....:: '::':'. :......J.t,.:::..... . ~ ..T FOIl...' TOp OF SAG 1:wAA'l1, ...... . .,;.:::.:"';..:::.;.: .:'. ....... ~.' .::. .. '. I.~. :'. . .'. '. .. .._ 2'......-.:;0;0.;· '. .1 ..... . :·:::::::·:::·:~:¡:k· :¡:/.::: :/,::..¡!¡¡1t.p. "PESS . ~ ....... ..' ....... ..,~§...,,.;. . . -.. . .... . Ó:SlMP N I , .' .... :.;.' .:.:.' .:. !!iiii:X. ............... 'IW,. '" lE SHALE' . I '::.' ,,;.: :;:, :::t.; ::::~.:~:~ ... .. ~:. ." s..." . .~. ... ~... '." ........ . .::::; .. .0:::::::: .: .:::. ::::::.:...... . .'. . . : ~ ..' . .... ...... ~-¿...u ........ ..,,~. ..«.. :;:" . '. .. 41·>. .f:i: " . .' ........ .. ....... ;¡. 0 . . ..,..,,,.,,, ~~. :>t,i il ;\!'i/ii\i::~"~\;'::;, ·fiip;:::~·~~·"~f4Ma!ir~ :'~'.~: ~~~~;'.';;'" ~ ~ ~ :.' ..... ~. ~'. ~~ .~~~, !fI....;.:.'.::: . :·:·~··nœ':·· :.:.;..... ..' .' .:..:..:.:.:.:.:.' ....:.:::~.:.::~~..I"'ii.. . ~"¡',"", ,,·m. :"':':',... . ~t~,,*=.~.. e ~""" ..... .....;.;. ........ TOI'''GO·''~''· II'!':':'>.. .... ................ E TE·S'''';';:·:'!:.. . U . ·T ... ',~. .. .. ...... ... ..' "UK I" ......... .... ............... ..It:, _ICPU .," .. 11:.&.. PT I ~ _ Kl 'A ::':'" .:'.:; \::;:\ so..M.~AOE .'. ":::.:::; ~è9' .k,.. '.. .''; ::;::::::>" . .. ..............:...:.: ;:}:ì····'wI£S7'·::::JJ. . ..':"' ..::'. ·tø¡¡~..~·...>:,-· ...... ¡" r . 'Sj,'" "...:......._ '" \~ ...... ..;- """:' ,- ~ .; -::L IT' .'O~:.. . ." ~:g: 100'-. .' ~4 Si,;:.; ._';,""17. A7.. - "\iiRt:·: :'~"~L" r¡f 1 !~....¡' ~.. ~ . ~ . . 1"1' ~--o'';' ..~31· 0'") ::" IJ~:..;;::.:.::::.:::::::::::t.~~·:::::{.:?·.·:·:~. ... .""1 .I T U Y ,.. ..--., =r....... I ..... 0'73 ,<: }'" ~i¡", .:;:..W.~ÇlllEtIC,....· ,.... """'" _ ' . . Ir-" 1"'7"\.-":":: ~ 1 ___ IIØ' .... < I ~..... ~ .",¡,¿ .': a6'.a:.:'.~. . iii Ì)~ "_'I.. ." ~ ~ - c.....M. . ~ ' N.R - (~ : I ¡.- _ -~..:1..'-' . 5 - <:: "\ --.- iii! ___ :7 __ It .. N. ..-í." "'..,:,:,:,.~.,::,,' "~ . I. ~ : ~.~ . r- - --~ N,P'TJ/-'O \~~;~L ~~ -.L ' ~ ". Î ~.~ ~'......,.. ~..._~; I ( \ l \ - r\ ,~ 1/"" ~ ~ - ~ ! DJ - ~ ~O¡';;';;'-_I~'-I' __I I ~ ,i ¡ \ 1 'I \"'1 I r\l )'" r-J 1(.... ....... ! I::. . .., j~__ ~: l ~.~ 1. , ,I r::::J . t\ ..... C~' .. .r ( :,.~ :»- ~Tl ' r; ~_"-I ~-! (''''OW; -'- ''''- MEADE '. _1 ",.--.- .. i! j\'¡ . ........ ~ ,....\ .....~I ¡ I,) 'L: · I I +....L '\....,L., ~N.R1' (" .~I I > ~ '? T N.P. f I ~, 1 ~AOLl'K I - I J( <' ,~~.R~~ ¡ t''\, ! 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I I _MeCULLUCII_ ____ ,I I ' -1{ h-.. 11. . ~TI ! -; , r- -+- . i ' ...... " ~~. L,.I" , /R, ¡ ~! I . r--- Þ / t-... 1 oi,ctl:J " ...... ...- A J.... '.' I : I,. ~ i ( \ #2-....,) --'------'----T------' '"..." .,.- h.A. --' ' . ... ' : .! "'""'" ,... II ....... ¡.-- ¡ ; , " ¡ ~ ~N"'f1r ~hA I I WNIFElLADE í j ~~TWIST' ~ri} , 1 L" -t.-t---f---¡-I~· 17 ,.. n , ~.~~ ,..<!,- : tj.....I"~...\,,...L- I I' , . U '~_.à,¡:;::lf" . ~ ..4a_ ,....... -" ,..1·..'.~L_ ..,....' ,I ! '¿11_ L - I..... _.~ ....- , -~:: ffJ!1 _- t¡v"'-~- 1...- ;~J-- ..._I~ I." '1" .... -.. ,'7'.~ 11-' -,- ~ h. 'M t-.I .. -~r~ V ~ ~~ ,J I "\ i ~...-I -'-t- t \ ,..,.,,~,. "''''" A"'1 ( 'A"~_ ~bl(.:.r:::"1 Ý , ...._ ___ _ . ~~ I"V I ,,,. HUKCHI + $£14 + + C" p~ ~C:~~5' () J Yet'" I I -I R.,-ieY7in~-L1 R'e..,s"e.1""voi,. 9- Ave.r~e, lGJ""o.;J'ir-j JYlqp s..s:. of 814 TR-3b ONLAPS IÞ4· , BARROW HIGH '5" 15Z I T T~'L 7e.-eh /-, ~/ f? ef'ðl"t- (Yo "if :<''00) 19"'8~ 1$'- e . Sand-Sha1ê';:,,~ Clâstic·' " Rat1o<' Ratio -.,. '. ,/ø6-:l~::"Atigaru:,Po1nt·'l\ .: IOO-tJ{}(Ç South Bárrow 3 IDb-/OI Cape Halkett 1 10000-ao'JJ. W. Dalton' 1 100-O'l3"W. Dease 1 IDÓ-/~'t{ Drew Point 1 /DÖ-/OO West: Fish Creek 1 ICXr/tJ(",H W. T.- Foran 1 .- IDo-lo3 South Harrison Bay 1 1~-03(' Iko,Bay 1 (OU-doÒ Ikp1kpuk 1 100- ~ In1 gOk 1 I(JO-/~ North In190(( 1 J 00 -155- Kugrua , 1 100 ' ,$1.;,. Kuyanak 1 100-#7 Lisburne 1 loo-15'l.f South Meade 1 /0()- ~~ Peard 1 100 ,/(,3 Simpson 1 100-901 East Simpson 1 IOO-~~ East Simpson 2 loo-!i~ South Simpson 1 100-/6;) East Teshekpuk 1 Iqb-/4)~Topagoruk 1 IOD-O<¡';f Tu1 ageak 1 lao_~~Tunalik 1 100 -w~ Wa 1 akpa 1 IOb-tMJ Walakpa 2 255 165 215 139 67 510 231 93 284 58 480 343 152+ 372 184 250(1) 238 300 269 431 382 524 181 370 67 . 470 284 313 lfø5'"-&31 Sinclair Colville 1 324 , Arco Itkillik , River l~ ; 322 ~~-' - ~:;, -~ '~-'~ 78: 50 66, 43 21 155 70 . 28 ·87 18 146 105 46+ 113 56 76 73 91 82 131 116 160 55 113 20 143 87 95 99 99 1/1 4 " ...'. " '··"38 , n .d: *:~9,~"!Fr>:':n: d .,:'l~r'""';c; ,..'. .'. 1/1.4'/ 3.1 1/1.2' ' 0 1/1.2 0 1.2 9 <1/8 1.8 1/2.5 14 1/10 1/6 2.4 . 13.5 1/7 ~.4Yj 1/6 18 n.d. n.d. <1/8 1.9 1.1 0 1.2 1/1.6 1/9.5 0 5.1 18 1/2.4 . 0 1/8.3 10 o 1/1.1 <1/8 23 <1/8 1.6 ' <1/8 0 1/1.3 0 1.1 5.6 2.3 8.5 2.1 7.9 n.d. n.d. ~~~'Bf¡'f~t~,ii~~î:~~1~11::?:!~~~~{~t~un~~e IS:U~~~~è ~~~1:, th :=: *, ':~t~cip!li;e~~ºn:iç;:·fè~:tur~ji~f.lb_':J!~RA..::Jn~trnt-,-~ª-$'t.erlLh..l f ".. ".,' ,.__.~ o!,~'_t~~lteserver:-thes maximum thickness of TR-3a occurs at ;'~;;".,~.~,:.' ,~;~:}:d~;~;~iJ¡;';~~i·:z·t '.,. '~'-"".,. ","" .',., ,- . . ','~, .' ... ¡, ....'... >·':<·;,~~~L~';~:;:;-,¿;~~·' ò' .-,_ ----. .; ..;,~~;~. ~:': .-~~~-_._. . ~- :'-~~"-~-~"';--~ -.::~;-""_:. . C':-:.::'·'r": .;-, :. /f }-Þ;;,'_:·~-~:~Twi-::-~L:·:-~.-.è~ ;:':-':~~>-{;~5;_~~'u- :~~.,~--~. . :~ -. . ____ _u_ ,--~=-..",F·~~~----;... --,,~"-- 7-~- ~_~__. .;.: n._",,:-:;:-- ,~_ -:-_--:"____ _~:_-.._:.'~.-:-,... _--,-_ ......_""--":--:_ _...._.._..__._..:.'..-=-- - _____.____._ =->-~~~_~...-.........:-~_-:::.~:.~.'........---~...,~'-~'-...;:--..-.--~--.-.-- .0. j." "r-, n.d. n.d. ' e e lkpikpuk 1 (480 ft, or 146 m) and Inigok 1 (343 ft, or 15 m) in the Ikpikpuk Basin. East of the Dease Inlet, the basðl "Pebble Shale" unconformity truncates TR-3a. The truncation zone runs roughly east-west and is just north of J. W. Dalton 1 and W. T. Foran 1. West of Dease Inlet, the unit onlaps the Barrow High. Thicknesses of TR-3a at East Teshekpuk 1 and West Fish Creek 1 indicate thinning over the Fish Creek Platform. Thinning also is apparent on the flanks of the Meade Arch, as indicated at South Meade 1 and Kugrua 1. In the western half of the Reserve, the unit is thickest at Tunalik 1 and thins northeastward toward the Barrow High. Lithology and high gamma-ray curve deflections within TR-3a suggest that the thinning may be due to periodic nondeposition. The TR-3a unit consists of calcareous carbonaceous shales and siltstones, silty limestones, and silty calcareous sandstones. Gl auconi te is a common accessory mi nera 1 in the sandstones, and thi n shell beds occur throughout the interval. Sand-shale ratios and clastic ratios indicate that the best sand development is in the northwestern part of the Reserve. High sand-shale ratios at Peard 1, Walakpa -1, Walakpa 2, and Iko Bay 1 indicate a source area northwest of the present shoreline. TR-3a is progressively more argillaceous toward the southeast and more calcareous toward the south. Over the Fi sh Creek Pl at form, the amount of 1 imestone present increases significantly. At South Harrison Bay 1, the unit is mostly limestone. At Lisburne 1, with no nearby control, arenaceous limestone is indicated. Apparent lithologic anoma'l i es occur at East 5i mpson 2 where the uni tis interbedded s 11 tstone and 1 i mestone and Drew Poi nt 1 where the high sand count may be caused by statistical variations, or may indicate a small barl1ke body flanking the Barrow High. -- --..----.- -----. ---- -----.. --- --.-.-.- / IslJp0-c-), ej.. L; H,ð~ e..S IVJC\f rR-3 C\.. T BASED ON SEISMIC s),~Jtk Fm, :RPRETATION, + ..: + + + SKULL CHUKCHI SEA e IO( / 'G / -- ¿ F -- ~ -- L'K -- ,¡<e d -- "J.-. ~ ÍIÏI ~-..: - -. ~ ... -" -- '- "" - '<0- f - "'" - I --L- 0- ... .... .... ...,.. ~ ---- - - - J""'-.n :;:¡:::;; - - ---- - ',," ..... ....,....1.....-- PEBBLE SHA:'~ '/1.2w_ ÐALTON"-iI II .. HIGH LOG~) Te.i:-f"a. 'k-é"-h F,;'þ.} R~i·'i- (NIl> ~ :<"00) i J 1'1? :¿ Fi:J.4-9 + I FIGURE 72 1 TYPE LOG OF UNCONFORMITY,BETWEEN SAG RIVER SANDSTONE AND KINGAK FORMATION; SOUTH MEADE 1. WALAKPA Is AND WEST DEA5E 1 This, figure shows representative sections of the Sag River Sand$tone at South Meade 1, Walakpa 1, and West Dease 1. In this report, the top of the Sag River Sandstone is chosen at a prominent gamma -ray and resistivity deflection that can be recognized regionally. These sections show that the log character of the Sag River Sandstone is fairly consistent in the vicinity of the Meade Arch, while the overlying rocks are variable. The "Barrow sandstone" and Sag River Sandstone are separated by a shale and siltstone unit. !~~. h..:". -.... '.~:"'::' e e "Old" .. ..a\.'}' Hells (1944-S3) ! j 4 ¡ Wel::" Name Avak -, IOO-Oé)-?- south Barrow-l /00 -083 South Barrow-2 /OD -oé}"! South ° Barrow-3 lOD .:.,O~ I South Barrow-4 10 Oróél' I Fish Creek-l I DO -Id::> i GJiandstand-l ¡ 00 -(þ5"3 I i Gubik-l IfJb-.g~ I i I Gubik-2 100 -:;){);J , Kaolak-l 100 -9~4( KnifebIade-l JðO - Ià. / Y.nifeblade-2 I bD - ~f; Kni.feblade-2A ì:s "'~t J{II\;Pe.Iøl4cJe 6- l1eaàe-l Ou."'IIaIik-1 IDO-f/<! \ Eas.t OUInalik-l /ODr"6- SimDson-l I DD-/"'~ N,,;f , S/",p~Þ,.,-1 lOO,..OI1/' Squ-are Lake-l J 00 -I (, Tita.Iuk-l /OO-IQÒ Topagoruk-l JOb -I~ Ea~t Topagoruk -1 I Umiat-l IOC -QoD¡ Umiat-2 100-QI(:) Umiat-3 (OO-dtl Umiat-4 100 -at;). , Umiat-S 100 -g/3 I -- j Umiat-6 /00 -d1q¡ Umiat-7 I(:;Ó _é}/~:t¡ I Umiat-8 loP -;)I(P I Umiat-9 Jó ö -Q/1- J Umiat-10 IDD-é)1 (f Umiat-l,l Iw,Ql1 \, Wolf Creek-l 1 bö-111"1 ¡- Wolf Creek-2 JUo-hC75 ! Wolf Creek-3 1(1)-'# I&) . _. _._.__u· _~.,~___.... ~ '.,...--.... .--.,.....--"'-- . 0. 1 ~' , ~ 1 - "Intermediate" Wells at Barrow. (1955-1974) I , 1 ~ ' "South Barrow-5 100 -bd.15 South Barrow-6 ¡OO-~'ì South Barrow-7 16f.);-o'3D South Barrow-B IlJó!-ô3/ South Barrow-9 IOD-ã3;;). South Barrow-10 1d:>-033 South Barrow-II IeÞ -ó3'¥ South Barrow-12 lóO"'Ò~ ~ " . . .. .-..---...---..--...,.'-'-'--- ._.._...___.._.·.h_ . J{5
