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FORM APPROVED OMB <br /> UNITED STATES <br /> Form 3160-5 No f004-0137 Expires <br /> (June 2019) DEPARTMENT OF THE INTERIOR December 31,2024 <br /> BUREAU OF LAND MANAGEMENT 5 Lease Serial No <br /> COC-0118327 <br /> SUNDRY NOTICES AND REPORTS ON WELLS 6 If Indian,Allottee or Tribe Name <br /> Do not use this form for proposals to drill or to re-enter an <br /> abandoned well. Use Form 3160-3(APD)for such proposals. <br /> SUBMIT IN TRIPLICATE-Other instructions on page 2 7,If Unit of CA/Agreement,Name and/or No <br /> I Type of Well <br /> ❑Oil Well ❑Gas Well ©Other 8.Well Name and No 3M-TDR <br /> 2.Name of Operator Natural Soda LLC 9 API Well No. <br /> 3a Address 3200 Rio Blanco County Rd 31 �(970) <br /> PhoneNo.(include area code) I0.Field and Pool or Exploratory Area <br /> Rifle.CO 81650 878-3674 Piceance Creek Basin <br /> 4_Location of Well(Footage.Sec.. T..R.M.,or.S'ur-rey Description) I I Country or Parish.State <br /> 562 FSL, 1557 FWL,S26,T1S,R98W,6th PM Rio Blanco County,CO <br /> 12 CHECK THE APPROPRIATE-BOX(ES)TO INDICATE NATURE OF NOTICE,REPORT OR OTHER DATA <br /> TYPE OF SUBMISSION TYPE OF ACTION <br /> ❑Notice of Intent ❑Acidize ❑Deepen ❑Production(Start/Resume) ❑Water Shut-Off <br /> ❑Alter Casing ❑Hydraulic Fracturing ❑Reclamation ❑Well Integrity <br /> ©Subsequent Report ❑Casing Repair ❑New Construction ❑Recomplete ❑Other <br /> ❑Change Plans ©Plug and Abandon ❑Temporarily Abandon <br /> ❑Final Abandonment Notice ❑Convert to Injection ❑Plug Back ❑Water Disposal <br /> 13 Describe Proposed or Completed Operation.Clearly state all pertinent details,including estimated starting date of any proposed work and approximate duration thereof.If <br /> the proposal is to deepen directionally or recomplete horizontally,give subsurface locations and measured and true vertical depths of all pertinent markers and zones Attach <br /> the Bond under which the work will be performed or provide the Bond No on file with BLM/BIA Required subsequent reports must be filed within 30 days following <br /> completion of the involved operations If the operation results in a multiple completion or recompletion in a new interval,a Form 3160-4 must be filed once testing has been <br /> completed Final Abandonment Notices must be filed only after all requirements,including reclamation,have been completed and the operator has detennined that the site <br /> is ready for final inspection I <br /> The Natural Soda LLC subsurface subsidence monitoring well 3M-TDR was successfully plugged and abandoned on March 8,2023 DLD collected a <br /> CBL GR/CCL log and perforated the 4.5-inch casing at depths of 1,745. 1,690, 1,628,765,535,250 and 70 feet prior to pumping cement. Two possible <br /> partings in the 4.5-inch casing were identified while tripping in the well,one at 1640.5 feet and one at 1756 feet,based on the casing tally. Seven cement <br /> plugs were pumped to plug the well to surface. The first five plugs consisting of a total of 422.5 sacks(98.4 bbls)of 14.2 to 14.4 lb/gal Portland Type 1/11 <br /> cement blend was spotted in the cased hole from 1,820 feet to 1,640.5 feet. Based on the calculated casing volume and 8.75-inch annulus volume for the <br /> interval,approximately 775%excess cement(85 7 bbls)was pushed out the perforations at 1,745,1,690 and the partings at 1,756 and 1640 5 feet into <br /> the casing annulus and the adjacent formation. The sixth plug consisting of 157.5 sacks(36 bbls)of Portland Type 1111 cement,with an average of 14.4 <br /> lb/gal density,was pumped downhole to plug the well from a depth of 1,640.5 feet to 580 feet Based on the calculated casing volume and uncemented <br /> casing annulus(875 to 580 feet)for the interval,approximately 9 1%excess cement(3 bbls)was pushed out the perforations at 1,628,and 765 feet into <br /> the casing annulus and adjacent formation. The seventh plug consisting of 131.25 sacks(30 bbls)of Portland Type 1/11 cement,with an average of 14.4 <br /> lb/gal density,was pumped downhole to plug the well from a depth of 580 feet to 51 feet. Based on the calculated casing volume and uncemented casing <br /> annulus(580 to 51 feet)for the interval,approximately 16.4%excess cement(5.9 bbls)was pushed out the perforations at 1,628,and 765 feet into the <br /> casing annulus and adjacent formation. The surface casing was cut off below surface. The 4 5-inch casing annulus from 51 feet to surface with 10 sacks <br /> (0 8 bbl)of 15.2 lb/gal Portland Type 1/11 cement. A total of 721.25 sacks(165.2 bbls)were used to P&A the 31A-TDR.The casing was cut off below <br /> ground level,capped,and buried prior to regrading of the well pad. The 3M-TDR well location will be recontoured and reseeded as part of the locations <br /> final reclamation planned for 2023. <br /> 14,I hereby certify that the foregoing is true and correct Name(PriniedlTjped) <br /> Title 1�- C Ct5 r de <br /> Signature - Date 3111,0112a2 3 <br /> THE SPACE FOR FEDERAL O STA OFTCE USE <br /> Approved by <br /> Title �Datc <br /> Conditions of approval,if am,are attached Approval of this notice does not warrant or <br /> certify that the applicant holds legal or equitable title to those rights in the subject lease Office <br /> which would entitle the applicant to conduct operations thereon <br /> Title 18 U SC Section 1001 and Title 43 U.S.0 Section 1212,make it a crime for any person knoAingly and willfully to make to any department or agency of the United States <br /> any false,fictitious or fraudulent statements or representations as to any matter within its iurisdiction <br /> (Instructions on page 2) <br />