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Home My WebLink About20222822.tiff1 PAGE OF DOCUMENT INCLUDED IN PAPER FILE. REMAINDER RETAINED ELECTRONICALLY IN TYLER. LETTERS SENT TO STRUCTURE OWNERS P4,L;G Rei;evJ 10/12/22 64'.(TP/MN/DA), Pw(T/ER/cWCK) 1O/7/22 2022-2822 TETRA TECH September 12, 2022 3W Properties, LLC Attn: Donna Weber 1210 Honeysuckle CT Windsor, CO 80550 RE: Request for Structure Agreement for Windsor East Mine Site Dear Donna Weber, Martin Marietta leases property proposed as the Windsor East Mine site in Weld County, Colorado. The property is located on the east side of Weld County Road 23, in Sections 35 and 36 of Township 6 North, Range 67 West of the 6th Principal Meridian. Martin Marietta is applying to the Colorado Division of Reclamation, Mining and Safety (DRMS) for a 112 Reclamation Permit. We have identified one or more structures that we believe you own within 200 feet of the affected area associated with this Permit. As part of their application and planning, Martin Marietta has taken steps to prevent any impact to your structure(s). Consistent with DRMS Construction Materials Rule 6, Section 6.4.20, Martin Marietta, as the permit applicant, shall identify permanent man-made structures within 200 feet of the affected area of the proposed mine site and request a notarized agreement with each structure owner, indicating that Martin Marietta will compensate the structure owner for any damage to the structure(s) caused by Martin Marietta. Attached to this letter you will find the Structure Agreement. The Agreement assures you that Martin Marietta will take responsibility for damage to your structure(s) if Martin Marietta's mining or reclamation activities unexpectedly affect your structure(s). The DRMS provided the language used in the Structure Agreement. Also attached to this letter is a draft copy of the Pre -Mining and Mining Plan maps associated with the Windsor East Mine application to help you understand the location of your structures in relation to the permit boundary and Martin Marietta's planned mining cells. Please sign and notarize the Agreement and return the Agreement in the enclosed, stamped and addressed envelope as soon as possible, preferably no later than Monday, October 10, 2022. If you have trouble finding a notary to notarize your signature, please contact Julie Mikulas with Martin Marietta at (970) 407-3631 and she can meet you to notarize. Once received, Martin Marietta will sign the agreement; then we will send you a fully executed copy for your records. If you have any questions about this request, please contact Pam Hora at pam.hora@tetratech.com or (720) 864- 4507. Thank you for your consideration. Sincerely, TETRA TECH Pamela Franch Hora, AICP Senior Planner cc: DRMS Enclosures: Structure Agreement Addressed, stamped envelope to use to return the Structure Agreement Tetra Tech 351 Coffman Street, Suite 200, Longmont, CO 80501 Tel 303-772-5282 Fax 303-772-7039 tetratech.com 3W Properties — Donna Weber Structure Agreement for Permanent Man-made structures within 200 feet (between CR 23 and the orange line) Structure: generally including but not limited to: buildings, houses, barns, fences, above or below ground utilities, irrigation ditches, maintained or public roads, bridges, pipelines, water wells, water storage structures, septic systems, discharge and conveyance structures, etc. Structures: 3170 SF House, 560 SF House, 495 SF Shed, 960 SF Equipment Building, Water Line, OH Electric Line, and Septic System, and Driveway STRUCTURE AGREEMENT This letter has been provided to you as the owner of a structure on or within 200 feet of a proposed mine site. The State of Colorado, Division of Reclamation, Mining and Safety ("Division") requires that where a mining operation may adversely affect the stability of any significant, valuable and permanent man-made structure located within 200 feet of the affected land, the Applicant shall either: a) Provide a notarized agreement between the Applicant and the Person(s) having an interest in the structure, that the Applicant is to provide compensation for any damages to the structure; or b) Where an agreement cannot be reached, the Applicant shall provide an appropriate engineering evaluation that demonstrates that such structure shall not be damaged by activities occurring at the mining operation; or c) Where such structure is a utility, the Applicant may supply a notarized letter, on utility letterhead, from the owner(s) of the utility that the mining and reclamation activities, as proposed, will have "no negative effect" on their utility. (Construction Materials Rule 6.3.12 and Rule 6.4.19 & Hard Rock/Metal Mining Rule 6.3.12 and Rule 6.4.20) The Colorado Mined Land Reclamation Board ("Board") has determined that this form, if properly executed, represents an agreement that complies with Construction Materials Rule 6.3.12(a), Rule 6.4.19(a), and C.R.S. 34- 32.5-115(4)(e) and with Hard Rock/Metal Mining Rule 6.3.12(a), Rule 6.4.20(a), and C.R.S. 34-32-115(4)(d). This form is for the sole purpose of ensuring compliance with the Rules and Regulations and shall not make the Board or Division a necessary party to any private civil lawsuit to enforce the terms of the agreement or create any enforcement obligations in the Board or the Division. The following structures are located on or within 200 feet of the proposed affected area: 1. House (3170 SF) 2. House (560 SF) 3. Shed (495 SF) 4. Equipment Building (960 SF) 5. Water Line 6. Overhead Electric Line 7. Septic System 8. Driveway CERTIFICATION The Applicant, Martin Marietta Materials, Inc., represented by H. Abbott Lawrence as West Division President, does hereby certify that 3W Properties, LLC (structure owner) shall be compensated for any damage from the proposed mining operation to the above listed structure(s) located on or within 200 feet of the proposed affected area described within Exhibit A, of the Reclamation Permit Application for Windsor East Mine. This form has been approved by the Colorado Mined Land Reclamation Board pursuant to its authority under the Colorado Land Reclamation Act for the Extraction of Construction Materials and the Colorado Mined Land Reclamation Act for Hard Rock, Metal, and Designated Mining Operations. Any alteration or modification to this form shall result in voiding this form. NOTARY FOR PERMIT APPLICANT ACKNOWLEGED BY: Applicant: Martin Marietta Materials, Inc. Representative Name: H. Abbott Lawrence Date: Title: West Division President STATE OF Colorado) ss. COUNTY OF Jefferson) The foregoing was acknowledged before me this day of , 20_, by H. Abbott Lawrence as West Division President of Martin Marietta Materials, Inc. My Commission Expires: May 30, 2024 Notary Public 2 NOTARY FOR STRUCTURE OWNER ACKNOWLEGED BY: Structure Owner: Date: Name: Title: STATE OF COUNTY OF The foregoing was acknowledged before me this day of , 20_, by ss. Notary Public of My Commission Expires: 3 TETRA TECH September 12, 2022 City of Aurora 15151 E. Alameda Parkway Aurora, CO 80012 RE: Request for Structure Agreement for Windsor East Mine Site To whom it may concern, Martin Marietta leases property proposed as the Windsor East Mine site in Weld County, Colorado. The property is located on the east side of Weld County Road 23, in Sections 35 and 36 of Township 6 North, Range 67 West of the 6th Principal Meridian. Martin Marietta is applying to the Colorado Division of Reclamation, Mining and Safety (DRMS) for a 112 Reclamation Permit. We have identified one or more structures that we believe you own within 200 feet of the affected area associated with this Permit. As part of their application and .planning, Martin Marietta has taken steps to prevent any impact to your structure(s). Consistent with DRMS Construction Materials Rule 6, Section 6.4.20, Martin Marietta, as the permit applicant, shall identify permanent man-made structures within 200 feet of the affected area of the proposed mine site and request a notarized agreement with each structure owner, indicating that Martin Marietta will compensate the structure owner for any damage to the structure(s) caused by Martin Marietta. Attached to this letter you will find the Structure Agreement. The Agreement assures you that Martin Marietta will take responsibility for damage to your structure(s) if Martin Marietta's mining or reclamation activities unexpectedly affect your structure(s). The DRMS provided the language used in the Structure Agreement. Also attached to this letter is a draft copy of the Pre -Mining and Mining Plan maps associated with the Windsor East Mine application to help you understand the location of your structures in relation to the permit boundary and Martin Marietta's planned mining cells. Please sign and notarize the Agreement and return the Agreement in the enclosed, stamped and addressed envelope as soon as possible, preferably no later than Monday, October 10, 2022. If you have trouble finding a notary to notarize your signature, please contact Julie Mikulas with Martin Marietta at (970) 407-3631 and she can meet you to notarize. Once received, Martin Marietta will sign the agreement; then we will send you a fully executed copy for your records. If you have any questions about this request, please contact Pam Hora at pam.hora@tetratech.com or (720) 864- 4507. Thank you for your consideration. Sincerely, TETRA TECH -lad/ma-A ‘i.,A44.4,#.69Y-6,-.- Pamela Franch Hora, AICP Senior Planner cc: DRMS Enclosures: Structure Agreement Addressed, stamped envelope to use to return the Structure Agreement Tetra Tech 351 Coffman Street, Suite 200, Longmont, CO 80501 Tel 303-772-5282 Fax 303-772-7039 tetratech.com STRUCTURE AGREEMENT This letter has been provided to you as the owner of a structure on or within 200 feet of a proposed mine site. The State of Colorado, Division of Reclamation, Mining and Safety ("Division") requires that where a mining operation may adversely affect the stability of any significant, valuable and permanent man-made structure located within 200 feet of the affected land, the Applicant shall either: a) Provide a notarized agreement between the Applicant and the Person(s) having an interest in the structure, that the Applicant is to provide compensation for any damages to the structure; or b) Where an agreement cannot be reached, the Applicant shall provide an appropriate engineering evaluation that demonstrates that such structure shall not be damaged by activities occurring at the mining operation; or c) Where such structure is a utility, the Applicant may supply a notarized letter, on utility letterhead, from the owner(s) of the utility that the mining and reclamation activities, as proposed, will have "no negative effect" on their utility. (Construction Materials Rule 6.3.12 and Rule 6.4.19 & Hard Rock/Metal Mining Rule 6.3.12 and Rule 6.4.20) The Colorado Mined Land Reclamation Board ("Board") has determined that this form, if property executed, represents an agreement that complies with Construction Materials Rule 6.3.12(a), Rule 6.4.19(a), and C.R.S. 34- 32.5-115(4)(e) and with Hard Rock/Metal Mining Rule 6.3.12(a), Rule 6.4.20(a), and C.R.S. 34-32-115(4)(d). This form is for the sole purpose of ensuring compliance with the Rules and Regulations and shall not make the Board or Division a necessary party to any private civil lawsuit to enforce the terms of the agreement or create any enforcement obligations in the Board or the Division. The following structures are located on or within 200 feet of the proposed affected area: 1. 30' Permanent/ 20' Temporary Water Line Easement CERTIFICATION The Applicant, Martin Marietta Materials, Inc., represented by H. Abbott Lawrence as West Division President, does hereby certify that the City of Aurora (structure owner) shall be compensated for any damage from the proposed mining operation to the above listed structure(s) located on or within 200feetof the proposed affected area described within Exhibit A, of the Reclamation Permit Application for Windsor East Mine. This form has been approved by the Colorado Mined Land Reclamation Board pursuant to its authority under the Colorado Land Reclamation Act for the Extraction of Construction Materials and the Colorado Mined Land Reclamation Act for Hard Rock, Metal, and Designated Mining Operations. Any alteration or modification to this form shall result in voiding this form. NOTARY FOR PERMIT APPLICANT ACKNOWLEGED BY: Applicant: Martin Marietta Materials, Inc. Representative Name: H. Abbott Lawrence Date: Title: West Division President STATE OF Colorado) ) ss. COUNTY OF Jefferson) The foregoing was acknowledged before me this day of , 20_, by H. Abbott Lawrence as West Division President of Martin Marietta Materials, Inc. My Commission Expires: Man 30, 2024 Notary Public 2 NOTARY FOR STRUCTURE OWNER ACKNOWLEGED BY: Structure Owner: Name: Date: Title: STATE OF ss. COUNTY OF The foregoing was acknowledged before me this day of , 20_, by as of My Commission Expires: Notary Public 3 TETRA TECH September 12, 2022 City of Greeley 1000 10. St Greeley, CO 80631 RE: Request for Structure Agreement for Windsor East Mine Site To whom it may concern, Martin Marietta leases property proposed as the Windsor East Mine site in Weld County, Colorado. The property is located on the east side of Weld County Road 23, in Sections 35 and 36 of Township 6 North, Range 67 West of the 6th Principal Meridian. Martin Marietta is applying to the Colorado Division of Reclamation, Mining and Safety (DRMS) for a 112 Reclamation Permit. We have identified one or more structures that we believe you own within 200 feet of the affected area associated with this Permit. As part of their application and planning, Martin Marietta has taken steps to prevent any impact to your structure(s). Consistent with DRMS Construction Materials Rule 6, Section 6.4.20, Martin Marietta, as the permit applicant, shall identify permanent man-made structures within 200 feet of the affected area of the proposed mine site and request a notarized agreement with each structure owner, indicating that Martin Marietta will compensate the structure owner for any damage to the structure(s) caused by Martin Marietta. Attached to this letter you will find the Structure Agreement. The Agreement assures you that Martin Marietta will take responsibility for damage to your structure(s) if Martin Marietta's mining or reclamation activities unexpectedly affect your structure(s). The DRMS provided the language used in the Structure Agreement. Also attached to this letter is a draft copy of the Pre -Mining and Mining Plan maps associated with the Windsor East Mine application to help you understand the location of your structures in relation to the permit boundary and Martin Marietta's planned mining cells. Please sign and notarize the Agreement and return the Agreement in the enclosed, stamped and addressed envelope as soon as possible, preferably no later than Monday, October 10, 2022. If you have trouble finding a notary to notarize your signature, please contact Julie Mikulas with Martin Marietta at (970) 407-3631 and she can meet you to notarize. Once received, Martin Marietta will sign the agreement; then we will send you a fully executed copy for your records. If you have any questions about this request, please contact Pam Hora at pam.hora@tetratech.com or (720) 864- 4507. Thank you for your consideration. Sincerely, TETRA TECH Pamela Franch Hora, AICP Senior Planner cc: DRMS Enclosures: Structure Agreement Addressed, stamped envelope to use to return the Structure Agreement Tetra Tech 351 Coffman Street, Suite 200, Longmont, CO 80501 Tel 303-772-5282 Fax 303-772-7039 tetratech.com STRUCTURE AGREEMENT This letter has been provided to you as the owner of a structure on or within 200 feet of a proposed mine site. The State of Colorado, Division of Reclamation, Mining and Safety ("Division") requires that where a mining operation may adversely affect the stability of any significant, valuable and permanent man-made structure located within 200 feet of the affected land, the Applicant shall either: a) Provide a notarized agreement between the Applicant and the Person(s) having an interest in the structure, that the Applicant is to provide compensation for any damages to the structure; or b) Where an agreement cannot be reached, the Applicant shall provide an appropriate engineering evaluation that demonstrates that such structure shall not be damaged by activities occurring at the mining operation; or c) Where such structure is a utility, the Applicant may supply a notarized letter, on utility letterhead, from the owner(s) of the utility that the mining and reclamation activities, as proposed, will have "no negative effect" on their utility. (Construction Materials Rule 6.3.12 and Rule 6.4.19 & Hard Rock/Metal Mining Rule 6.3.12 and Rule 6.4.20) The Colorado Mined Land Reclamation Board ("Board") has determined that this form, if properly executed, represents an agreement that complies with Construction Materials Rule 6.3.12(a), Rule 6.4.19(a), and C.R.S. 34- 32.5-115(4)(e) and with Hard Rock/Metal Mining Rule 6.3.12(a), Rule 6.4.20(a), and C.R.S. 34-32-115(4)(d). This form is for the sole purpose of ensuring compliance with the Rules and Regulations and shall not make the Board or Division a necessary party to any private civil lawsuit to enforce the terms of the agreement or create any enforcement obligations in the Board or the Division. The following structures are located on or within 200 feet of the proposed affected area: 1. Centerline of Water Easement (Width Not Specified) 2. Water Line (2) 3. 50' Water Pipe Easement 4. Water Pipeline Easement 5. Water Line in 50' Easement 6. Water Valves and Appurtenant Structures 7. 50' Water Pipe Easement CERTIFICATION The Applicant, Martin Marietta Materials, Inc., represented by H. Abbott Lawrence as West Division President, does hereby certify that the City of Greeley (structure owner) shall be compensated for any damage from the proposed mining operation to the above listed structure(s) located on or within 200 feet of the proposed affected area described within Exhibit A, of the Reclamation Permit Application for Windsor East Mine. This form has been approved by the Colorado Mined Land Reclamation Board pursuant to its authority under the Colorado Land Reclamation Act for the Extraction of Construction Materials and the Colorado Mined Land Reclamation Act for Hard Rock, Metal, and Designated Mining Operations. Any alteration or modification to this form shall result in voiding this form. NOTARY FOR PERMIT APPLICANT ACKNOWLEGED BY: Applicant: Martin Marietta Materials, Inc. Representative Name: H. Abbott Lawrence Date: Title: West Division President STATE OF Colorado) ) ss. COUNTY OF Jefferson) The foregoing was acknowledged before me this day of , 20_, by H. Abbott Lawrence as West Division President of Martin Marietta Materials, Inc. My Commission Expires: May 30, 2024 Notary Public 2 NOTARY FOR STRUCTURE OWNER ACKNOWLEGED BY: Structure Owner: Name: Date: Title: STATE OF ss. COUNTY OF The foregoing was acknowledged before me this day of , 20_, by as of My Commission Expires: Notary Public 3 TETRA TECH September 12, 2022 Steven and Colleen Blanks 30523 County Road 23 Greeley, CO 80631 RE: Request for Structure Agreement for Windsor East Mine Site Dear Steven and Colleen Blanks, Martin Marietta leases property proposed as the Windsor East Mine site in Weld County, Colorado. The property is located on the east side of Weld County Road 23, in Sections 35 and 36 of Township 6 North, Range 67 West of the 6th Principal Meridian. Martin Marietta is applying to the Colorado Division of Reclamation, Mining and Safety (DRMS) for a 112 Reclamation Permit. We have identified one or more structures that we believe you own within 200 feet of the affected area associated with this Permit. As part of their application and planning, Martin Marietta has taken steps to prevent any impact to your structure(s). Consistent with DRMS Construction Materials Rule 6, Section 6.4.20, Martin Marietta, as the permit applicant, shall identify permanent man-made structures within 200 feet of the affected area of the proposed mine site and request a notarized agreement with each structure owner, indicating that Martin Marietta will compensate the structure owner for any damage to the structure(s) caused by Martin Marietta. Attached to this letter you will find the Structure Agreement. The Agreement assures you that Martin Marietta will take responsibility for damage to your structure(s) if Martin Marietta's mining or reclamation activities unexpectedly affect your structure(s). The DRMS provided the language used in the Structure Agreement. Also attached to this letter is a draft copyof the Pre -Mining and Mining Plan maps associated with the Windsor East Mine application to help you understand the location of your structures in relation to the permit boundary and Martin Marietta's planned mining cells. Please sign and notarize the Agreement and return the Agreement in the enclosed, stamped and addressed envelope as soon as possible, preferably no later than Monday, October 10, 2022. If you have trouble finding a notary to notarize your signature, please contact Julie Mikulas with Martin Marietta at (970) 407-3631 and she can meet you to notarize. Once received, Martin Marietta will sign the agreement; then we will send you a fully executed copy for your records. If you have any questions about this request, please contact Pam Hora at pam.hora@tetratech.com or (720) 864- 4507. Thank you for your consideration. Sincerely, TETRA TECH Pamela Franch Hora, AICP Senior Planner cc: DRMS Enclosures: Structure Agreement Addressed, stamped envelope to use to return the Structure Agreement Tetra Tech 351 Coffman Street, Suite 200, Longmont, CO 80501 Tel 303-772-5282 Fax 303-772-7039 tetratech.com Steven and Colleen Blanks Structure Agreement for Permanent Man-made structures within 200 feet (between CR 23 and the orange line) Structure: generally including but not limited to: buildings, houses, barns, fences, above or below ground utilities, irrigation ditches, maintained or public roads, bridges, pipelines, water wells, water storage structures, septic systems, discharge and conveyance structures, etc. Structures: 1782 SF House, Sprinkler System, Water Line, OH Electric Line, portion of Septic System shared with Demianycz and Driveway STRUCTURE AGREEMENT This letter has been provided to you as the owner of a structure on or within 200 feet of a proposed mine site. The State of Colorado, Division of Reclamation, Mining and Safety ("Division") requires that where a mining operation may adversely affect the stability of any significant, valuable and permanent man-made structure located within 200 feet of the affected land, the Applicant shall either: a) Provide a notarized agreement between the Applicant and the Person(s) having an interest in the structure, that the Applicant is to provide compensation for any damages to the structure; or b) Where an agreement cannot be reached, the Applicant shall provide an appropriate engineering evaluation that demonstrates that such structure shall not be damaged by activities occurring at the mining operation; or c) Where such structure is a utility, the Applicant may supply a notarized letter, on utility letterhead, from the owner(s) of the utility that the mining and reclamation activities, as proposed, will have "no negative effect" on their utility. (Construction Materials Rule 6.3.12 and Rule 6.4.19 & Hard Rock/Metal Mining Rule 6.3.12 and Rule 6.4.20) The Colorado Mined Land Reclamation Board (`Board's has determined that this form, if properly executed, represents an agreement that complies with Construction Materials Rule 6.3.12(a), Rule 6.4.19(a), and C.R.S. 34- 32.5-115(4)(e) and with Hard Rock/Metal Mining Rule 6.3.12(a), Rule 6.4.20(a), and C.R.S. 34-32-115(4)(d). This form is for the sole purpose of ensuring compliance with the Rules and Regulations and shall not make the Board or Division a necessary party to any private civil lawsuit to enforce the terms of the agreement or create any enforcement obligations in the Board or the Division. The following structures are located on or within 200 feet of the proposed affected area: 1. House (1782 SF) 2. Water Line 3. Overhead Electric Line 4. Sprinkler System 5. Septic System Tank 6. Driveway CERTIFICATION The Applicant, Martin Marietta Materials, Inc., represented by H. Abbott Lawrence as West Division President, does hereby certify that Steven and Colleen Blanks (structure owner) shall be compensated for any damage from the proposed mining operation to the above listed structure(s) located on or within 200 feet of the proposed affected area described within Exhibit A, of the Reclamation Permit Application for Windsor East Mine. This form has been approved by the Colorado Mined Land Reclamation Board pursuant to its authority under the Colorado Land Reclamation Act for the Extraction of Construction Materials and the Colorado Mined Land Reclamation Act for Hard Rock, Metal, and Designated Mining Operations. Any alteration or modification to this form shall result in voiding this form. NOTARY FOR PERMIT APPLICANT ACKNOWLEGED BY: Applicant Martin Marietta Materials, Inc. Representative Name: H. Abbott Lawrence Date: Title: West Division President STATE OF Colorado) ss. COUNTY OF Jefferson The foregoing was acknowledged before me this day of , 20_, by H. Abbott Lawrence as West Division President of Martin Marietta Materials, Inc. My Commission Expires: May 30, 2024 Notary Public 2 NOTARY FOR STRUCTURE OWNER ACKNOWLEGED BY: Structure Owner: Name: Date: Title: STATE OF ss. COUNTY OF The foregoing was acknowledged before me this day of , 20_, by of My Commission Expires: Notary Public 3 TETRA TECH September 12, 2022 DCP Lucerne 2 Plant LLC 3026 4t' Ave Greeley, CO 80631 RE: Request for Structure Agreement for Windsor East Mine Site To whom it may concern, Martin Marietta leases property proposed as the Windsor East Mine site in Weld County, Colorado. The property is located on the east side of Weld County Road 23, in Sections 35 and 36 of Township 6 North, Range 67 West of the 6th Principal Meridian. Martin Marietta is applying to the Colorado Division of Reclamation, Mining and Safety (DRMS) for a 112 Reclamation Permit. We have identified one or more structures that we believe you own within 200 feet of the affected area associated with this Permit. As part of their application and planning, Martin Marietta has taken steps to prevent any impact b your structure(s). Consistent with DRMS Construction Materials Rule 6, Section 6.4.20, Martin Marietta, as the permit applicant, shall identify permanent man-made structures within 200 feet of the affected area of the proposed mine site and request a notarized agreement with each structure owner, indicating that Martin Marietta will compensate the structure owner for any damage to the structure(s) caused by Martin Marietta. Attached to this letter you will find the Structure Agreement. The Agreement assures you that Martin Marietta will take responsibility for damage to your structure(s) if Martin Marietta's mining or reclamation activities unexpectedly affect your structure(s). The DRMS provided the language used in the Structure Agreement. Also attached to this letter is a draft copy of the Pre -Mining and Mining Plan maps associated with the Windsor East. Mine application to help you understand the location of your structures in relation to the permit boundary and Martin Marietta's planned mining cells. Please sign and notarize the Agreement and return the Agreement in the enclosed, stamped and addressed envelope as soon as possible, preferably no later than Monday, October 10, 2022. If you have trouble finding a notary to notarize your signature, please contact Julie Mikulas with Martin Marietta at (970) 407-3631 and she can meet you to notarize. Once received, Martin Marietta will sign the agreement; then we will send you a fully executed copy for your records. If you have any questions about this request, please contact Pam Hora at pam.hora@tetratech.com or (720) 864- 4507. Thank you for your consideration. Sincerely, TETRA TECH Pamela Franch Hora, AICP Senior Planner cc: DRMS Enclosures: Structure Agreement Addressed, stamped errvelope to use to return the Structure Agreement Tetra Tech 351 Coffman Street, Suite 200, Longmont, CO 80501 Tel 303-772-5282 Fax 303-772-7039 tetratech.com STRUCTURE AGREEMENT This letter has been provided to you as the owner of a structure on or within 200 feet of a proposed mine site. The State of Colorado, Division of Reclamation, Mining and Safety ("Division") requires that where a mining operation may adversely affect the stability of any significant, valuable and permanent man-made structure located within 200 feet of the affected land, the Applicant shall either: a) Provide a notarized agreement between the Applicant and the Person(s) having an interest in the structure, that the Applicant is to provide compensation for any damages to the structure; or b) Where an agreement cannot be reached, the Applicant shall provide an appropriate engineering evaluation that demonstrates that such structure shall not be damaged by activities occurring at the mining operation; or c) Where such structure is a utility, the Applicant may supply a notarized letter, on utility letterhead, from the owner(s) of the utility that the mining and reclamation activities, as proposed, will have "no negative effect" on their utility. (Construction Materials Rule 6.3.12 and Rule 6.4.19 & Hard Rock/Metal Mining Rule 6.3.12 and Rule 6.4.20) The Colorado Mined Land Reclamation Board ("Board") has determined that this form, if properly executed, represents an agreement that complies with Construction Materials Rule 6.3.12(a), Rule 6.4.19(a), and C.R.S. 34- 32.5-115(4)(e) and with Hard Rock/Metal Mining Rule 6.3.12(a), Rule 6.4.20(a), and C.R.S. 34-32-115(4)(d). This form is for the sole purpose of ensuring compliance with the Rules and Regulations and shall not make the Board or Division a necessary party to any private civil lawsuit to enforce the terms of the agreement or create any enforcement obligations in the Board or the Division. The following structures are located on or within 200 feet of the proposed affected area: 1. 30' Pipeline Easement CERTIFICATION The Applicant, Martin Marietta Materials, Inc., represented by H. Abbott Lawrence as West Division President, does hereby certify that DCP Lucerne 2 Plant LLC (structure owner) shall be compensated for any damage from the proposed mining operation to the above listed structure(s) located on or within 200 feet of the proposed affected area described within Exhibit A, of the Reclamation Permit Application for Windsor East Mine. This form has been approved by the Colorado Mined Land Reclamation Board pursuant to its authority under the Colorado Land Reclamation Act for the Extraction of Construction Materials and the Colorado Mined Land Reclamation Act for Hard Rock, Metal, and Designated Mining Operations. Any alteration or modification to this form shall result in voiding this form. NOTARY FOR PERMIT APPLICANT ACKNOWLEGED BY: Applicant: Martin Marietta Materials, Inc. Representative Name: H. Abbott Lawrence Date: Title: West Division President STATE OF Colorado) COUNTY OF Jefferson) ss. The foregoing was acknowledged before me this day of , 20_, by H. Abbott Lawrence as West Division President of Martin Marietta Materials, Inc. Notary Public My Commission Expires: May 30, 2024 2 NOTARY FOR STRUCTURE OWNER ACKNOWLEGED BY: Structure Owner: Date: Name: Title: STATE OF COUNTY OF The foregoing was acknowledged before me this day of , 20_, by ss. Notary Public of My Commission Expires: 3 TETRA TECH September 12, 2022 DCP Midstream 3026 4th Ave Greeley, CO 80631 RE: Request for Structure Agreement for Windsor East Mine Site To whom it may concern, Martin Marietta leases property proposed as the Windsor East Mine site in Weld County, Colorado. The property is located on the east side of Weld County Road 23, in Sections 35 and 36 of Township 6 North, Range 67 West of the 6th Principal Meridian. Martin Marietta is applying to the Colorado Division of Reclamation, Mining and Safety (DRMS) for a 112 Reclamation Permit. We have identified one or more structures that we believe you own within 200 feet of the affected area associated with this Permit. As part of their application and planning, Martin Marietta has taken steps to prevent any impact to your structure(s). Consistent with DRMS Construction Materials Rule 6, Section 6.4.20, Martin Marietta, as the permit applicant, shall identify permanent man-made structures within 200 feet of the affected area of the proposed mine site and request a notarized agreement with each structure owner, indicating that Martin Marietta will compensate the structure owner for any damage to the structure(s) caused by Martin Marietta. Attached to this letter you will find the Structure Agreement. The Agreement assures you that Martin Marietta will take responsibility for damage to your structure(s) if Martin Marietta's mining or reclamation activities unexpectedly affect your structure(s). The DRMS provided the language used in the Structure Agreement. Also attached to this letter is a draft copy of the Pre -Mining and Mining Plan maps associated with the Windsor East Mine application to help you understand the location of your structures in relation to the permit boundary and Martin Marietta's planned mining cells. Please sign and notarize the Agreement and return the Agreement in the enclosed, stamped and addressed envelope as soon as possible, preferably no later than Monday, October 10, 2022. If you have trouble finding a notary to notarize your signature, please contact Julie Mikulas with Martin Marietta at (970) 407-3631 and she can meet you to notarize. Once received, Martin Marietta will sign the agreement; then we will send you a fully executed copy for your records. If you have any questions about this request, please contact Pam Hora at pam.hora@tetratech.com or (720) 864- 4507. Thank you for your consideration. Sincerely, TETRA TECH Pamela Franch Hora, AICP Senior Planner cc: DRMS Enclosures: Structure Agreement Addressed, stamped envelope to use to return the Structure Agreement Tetra Tech 351 Coffman Street, Suite 200, Longmont, CO 80501 Tel 303-772-5282 Fax 303-772-7039 tetratech.com STRUCTURE AGREEMENT This letter has been provided to you as the owner of a structure on or within 200 feet of a proposed mine site. The State of Colorado, Division of Reclamation, Mining and Safety ("Division") requires that where a mining operation may adversely affect the stability of any significant, valuable and permanent man-made structure located within 200 feet of the affected land, the Applicant shall either: a) Provide a notarized agreement between the Applicant and the Person(s) having an interest in the structure, that the Applicant is to provide compensation for any damages to the structure; or b) Where an agreement cannot be reached, the Applicant shall provide an appropriate engineering evaluation that demonstrates that such structure shall not be damaged by activities occurring at the mining operation; or c) Where such structure is a utility, the Applicant may supply a notarized letter, on utility letterhead, from the owner(s) of the utility that the mining and reclamation activities, as proposed, will have "no negative effect" on their utility. (Construction Materials Rule 6.3.12 and Rule 6.4.19 & Hard Rock/Metal Mining Rule 6.3.12 and Rule 6.4.20) The Colorado Mined Land Reclamation Board ("Board") has determined that this form, if properly executed, represents an agreement that complies with Construction Materials Rule 6.3.12(a), Rule 6.4.19(a), and C.R.S. 34- 32.5-115(4)(e) and with Hard Rock/Metal Mining Rule 6.3.12(a), Rule 6.4.20(a), and C.R.S. 34-32-115(4)(d). This form is for the sole purpose of ensuring compliance with the Rules and Regulations and shall not make the Board or Division a necessary party to any private civil lawsuit to enforce the terms of the agreement or create any enforcement obligations in the Board or the Division. The following structures are located on or within 200 feet of the proposed affected area: 1. Pipeline Easement with Abandoned Pipeline (2) 2. Oil Equipment Inside Fence 3. Gas Lines — Cut and Cleaned 4. Gas Lines 5. Pipeline ROW Grant CERTIFICATION The Applicant, Martin Marietta Materials, Inc., represented by H. Abbott Lawrence as West Division President, does hereby certify that DCP Midstream (structure owner) shall be compensated for any damage from the proposed mining operation to the above listed structure(s) located on or within 200 feet of the proposed affected area described within Exhibit A, of the Reclamation Permit Application for Windsor East Mine. This form has been approved by the Colorado Mined Land Reclamation Board pursuant to its authority under the Colorado Land Reclamation Act for the Extraction of Construction Materials and the Colorado Mined Land Reclamation Act for Hard Rock, Metal, and Designated Mining Operations. Any alteration or modification to this form shall result in voiding this form. NOTARY FOR PERMIT APPLICANT ACKNOWLEGED BY: Applicant: Martin Marietta Materials, Inc. Representative Name: H. Abbott Lawrence Date: Title: West Division President STATE OF Colorado) ss. COUNTY OF Jefferson) The foregoing was acknowledged before me this day of , 20_, by H. Abbott Lawrence as West Division President of Martin Marietta Materials, Inc. My Commission Expires: May 30, 2024 Notary Public 2 NOTARY FOR STRUCTURE OWNER ACKNOWLEGED BY: Structure Owner: Name: Date: Title: STATE OF ss. COUNTY OF The foregoing was acknowledged before me this day of , 20=, by of My Commission Expires: Notary Public 3 TETRA TECH September 12, 2022 GWIP, LLC 252 Clayton Street 4m Floor Denver, CO 80206 RE: Request for Structure Agreement for Windsor East Mine Site To whom it may concern, Martin Marietta leases property proposed as the Windsor East Mine site in Weld County, Colorado. The property is located on the east side of Weld County Road 23, in Sections 35 and 36 of Township 6 North, Range 67 West of the 6th Principal Meridian. Martin Marietta is applying to the Colorado Division of Reclamation, Mining and Safety (DRMS) for a 112 Reclamation Permit. We have identified one or more structures that we believe you own within 200 feet of the affected area associated with this Permit. As part of their application and planning, Martin Marietta has taken steps to prevent any impact to your structure(s). Consistent with DRMS Construction Materials Rule 6, Section 6.4.20, Martin Marietta, as the permit applicant, shall identify permanent man-made structures within 200 feet of the affected area of the proposed mine site and. request a notarized agreement with each structure owner, indicating that Martin Marietta will compensate the structure owner for any damage to the structure(s) caused by Martin Marietta. Attached to this letter you will find the Structure Agreement. The Agreement assures you that Martin Marietta will take responsibility for damage to your structure(s) if Martin Marietta's mining or reclamation activities unexpectedly affect your structure(s). The DRMS provided the language used in the Structure Agreement. Also attached to this letter is a draft copy of the Pre -Mining and Mining Plan maps associated with the Windsor East Mine application to help you understand the location of your structures in relation to the permit boundary and Martin Marietta's planned mining cells. Please sign and notarize the Agreement and return the Agreement in the enclosed, stamped and addressed envelope as soon as possible, preferably no later than Monday, October 10, 2022. If you have trouble finding a notary to notarize your signature, please contact Julie Mikulas with Martin Marietta at (970) 407-3631 and she can meet you to notarize. Once received, Martin Marietta will sign the agreement; then we will send you a fully executed copy for your records. If you have any questions about this request, please contact Pam Hora at pam.hora@tetratech.com or (720) 864- 4507. Thank you for your consideration. Sincerely, TETRA TECH Pamela Franch Hora, AICP Senior Planner cc: DRMS Enclosures: Structure Agreement Addressed, stamped envelope to use to return the Structure Agreement Tetra Tech 351, Coffman Street, Suite 200, Longmont, CO 80501 Tel 303-772-5282 Fax 303-772-7039 tetratech.com STRUCTURE AGREEMENT This letter has been provided to you as the owner of a structure on or within 200 feet of a proposed mine site. The State of Colorado, Division of Reclamation, Mining and Safety ("Division") requires that where a mining operation may adversely affect the stability of any significant, valuable and permanent man-made structure located within 200 feet of the affected land, the Applicant shall either: a) Provide a notarized agreement between the Applicant and the Person(s) having an interest in the structure, that the Applicant is to provide compensation for any damages to the structure; or b) Where an agreement cannot be reached, the Applicant shall provide an appropriate engineering evaluation that demonstrates that such structure shall not be damaged by activities occurring at the mining operation; or c) Where such structure is a utility, the Applicant may supply a notarized letter, on utility letterhead, from the owner(s) of the utility that the mining and reclamation activities, as proposed, will have "no negative effect" on their utility. (Construction Materials Rule 6.3.12 and Rule 6.4.19 & Hard Rock/Metal Mining Rule 6.3.12 and Rule 6.4.20) The Colorado Mined Land Reclamation Board ("Board") has determined that this form, if properly executed, represents an agreement that complies with Construction Materials Rule 6.3.12(a), Rule 6.4.19(a), and C.R.S. 34- 32.5-115(4)(e) and with Hard Rock/Metal Mining Rule 6.3.12(a), Rule 6.4.20(a), and C.R.S. 34-32-115(4)(d). This form is for the sole purpose of ensuring compliance with the Rules and Regulations and shall not make the Board or Division a necessary party to any private civil lawsuit to enforce the terms of the agreement or create any enforcement obligations in the Board or the Division. The following structures are located on or within 200 feet of the proposed affected area: 1. Concrete Lined Lateral (2) 2. House (1309 SF) 3. Utility Building (1440 SF) 4. Small Buildings (3) (1348 SF) 5. Irrigation Pump 6. Private Road 7. Fenceline (4) 8. Swale Flowline (3) - some to be removed per mine plan 9. Swale Flowline Lateral — to be removed per mine plan 10. Access Road (2) 11. ROW Closed to Public Access 12. Ditch Lateral 13. Water Meter 14. 10' Utility Easement 15. Rock Structure (Side Channel) CERTIFICATION The Applicant, Martin Marietta Materials, Inc., represented by H. Abbott Lawrence as West Division President, does hereby certify that GWIP, LLC (structure owner) shall be compensated for any damage from the proposed mining operation'to the above listed structure(s) located on or within 200 feet of the proposed affected area described within Exhibit A, of the Reclamation Permit Application for Windsor East Mine. This form has been approved by the Colorado Mined Land Reclamation Board pursuant to its authority under the Colorado Land Reclamation Act for the Extraction of Construction Materials and the Colorado Mined Land Reclamation Act for Hard Rock, Metal, and Designated Mining Operations. Any alteration or modification to this form shall result in voiding this form. NOTARY FOR PERMIT APPLICANT ACKNOWLEGED BY: Applicant: Martin Marietta Materials. Inc. Representative Name: H. Abbott Lawrence Date: Title: West Division President STATE OF Colorado) COUNTY OF Jefferson) ss. The foregoing was acknowledged before me this day of , 20_, by H. Abbott Lawrence as West Division President of Martin Marietta Materials, Inc. Notary Public My Commission Expires: May 30, 2024 2 [ib] TETRA TECH September 12, 2022 John Daniel Demianycz Revocable Trust PO Box 147 Windsor, CO 80550 RE: Request for Structure Agreement for Windsor East Mine Site To whom it may concern, Martin Marietta leases property proposed as the Windsor East Mine site in Weld County, Colorado. The property is located on the east side of Weld County Road 23, in Sections 35 and 36 of Township 6 North, Range 67 West of the 6th Principal Meridian. Martin Marietta is applying to the Colorado Division of Reclamation, Mining and Safety (DRMS) for a 112 Reclamation Permit. We have identified one or more structures that we believe you own within 200 feet of the affected area associated with this Permit. As part of their application and planning, Martin Marietta has taken steps to prevent any impact to your structure(s). Consistent with DRMS Construction Materials Rule 6, Section 6.4.20, Martin Marietta, as the permit applicant, shall identify permanent man-made structures within 200 feet of the affected area of the proposed mine site and request a notarized agreement with each structure owner, indicating that Martin Marietta will compensate the structure owner for any damage to the structure(s) caused by Martin Marietta. Attached to this letter you will find the Structure Agreement. The Agreement assures you that Martin Marietta will take responsibility for damage to your structure(s) if Martin Marietta's mining or reclamation activities unexpectedly affect your structure(s). The DRMS provided the language used in the Structure Agreement. Also attached to this letter is a draft copy of the Pre -Mining and Mining Plan maps associated with the Windsor East Mine application to help you understand the location of your structures in relation to the permit boundary and Martin Marietta's planned mining cells. Please sign and notarize the Agreement and return the Agreement in the enclosed, stamped and addressed envelope as soon as possible, preferably no later than Monday, October 10, 2022. If you have trouble finding a notary to notarize your signature, please contact Julie Mikulas with Martin Marietta at (970) 407-3631 and she can meet you to notarize. Once received, Martin Marietta will sign the agreement; then we will send you a fully executed copy for your records. If you have any questions about this request, please contact Pam Hora at pam.hora@tetratech.com or (720) 864- 4507. Thank you for your consideration. Sincerely, TETRA TECH `fa/me/tie Pamela Franch Hora, AICP Senior Planner cc: DRMS Enclosures: Structure Agreement Addressed, stamped envelope to use to return the Structure Agreement Tetra Tech 351 Coffman Street, Suite 200, Longmont, CO 80501 Tel 303-772-5282 Fax 303-772-7039 tetratech.com John Daniel Demianycz Revocable Trust Structure Agreement for Permanent Man-made structures within 200 feet (between CR 23 and the orange line) Structure: generally including but not limited to: buildings, houses, barns, fences, above or below ground utilities, irrigation ditches, maintained or public roads, bridges, pipelines, water wells, water storage structures, septic systems, discharge and conveyance structures, etc. Structures: 1270 SF House, 2520 SF Quonset, Outbuilding, Water Line, OH Electric Line, portion of Septic System shared with Blank, and Driveway. Use mailing address of PO Box 147, Windsor, CO 80550 STRUCTURE AGREEMENT This letter has been provided to you as the owner of a structure on or within 200 feet of a proposed mine site. The State of Colorado, Division of Reclamation, Mining and Safety ("Division") requires that where a mining operation may adversely affect the stability of any significant, valuable and permanent man-made structure located within 200 feet of the affected land, the Applicant shall either: a) Provide a notarized agreement between the Applicant and the Person(s) having an interest in the structure, that the Applicant is to provide compensation for any damages to the structure; or b) Where an agreement cannot be reached, the Applicant shall provide an appropriate engineering evaluation that demonstrates that such structure shall not be damaged by activities occurring at the mining operation; or c) Where such structure is a utility, the Applicant may supply a notarized letter, on utility letterhead, from the owner(s) of the utility that the mining and reclamation activities, as proposed, will have "no negative effect" on their utility. (Construction Materials Rule 6.3.12 and Rule 6.4.19 & Hard Rock/Metal Mining Rule 6.3.12 and Rule 6.4.20) The Colorado Mined Land Reclamation Board ("Board") has determined that this form, if properly executed, represents an agreement that complies with Construction Materials Rule 6.3.12(a), Rule 6.4.19(a), and C.R.S. 34- 32.5-115(4)(e) and with Hard Rock/Metal Mining Rule 6.3.12(a), Rule 6.4.20(a), and C.R.S. 34-32-115(4)(d). This form is for the sole purpose of ensuring compliance with the Rules and Regulations and shall not make the Board or Division a necessary party to any private civil lawsuit to enforce the terms of the agreement or create any enforcement obligations in the Board or the Division. The following structures are located on or within 200 feet of the proposed affected area: 1. House (1270 SF) 2. Quonset (2520 SF) 3. Outbuilding 4. Water Line 5. Overhead Electric Line 6. Septic System Leach Field 7. Driveway CERTIFICATION The Applicant, Martin Marietta Materials, Inc., represented by H. Abbott Lawrence as West Division President, does hereby certify that the John Daniel Demianvcz Revocable Trust (structure owner) shall be compensated for any damage from the proposed mining operation to the above listed structure(s) located on or within 200 feet of the proposed affected area described within Exhibit A, of the Reclamation Permit Application for Windsor East Mine. This fors has been approved by the Colorado Mined Land Reclamation Board pursuant to its authority under the Colorado Land Reclamation Act for the Extraction of Construction Materials and the Colorado Mined Land Reclamation Act for Hard Rock, Metal, and Designated Mining Operations. Any alteration or modification to this form shall result in voiding this form. NOTARY FOR PERMIT APPLICANT ACKNOWLEGED BY: Applicant: Martin Marietta Materials, Inc. Representative Name: H. Abbott Lawrence Date: Title: West Division President STATE OF Colorado) COUNTY OF Jefferson ) ss. The foregoing was acknowledged before me this day of , 20_, by H. Abbott Lawrence as West Division President of Martin Marietta Materials, Inc. My Commission Expires: May 30, 2024 Notary Public 2 NOTARY FOR STRUCTURE OWNER ACKNOWLEGED BY: Structure Owner: Name: Date: Title: STATE OF COUNTY OF The foregoing was acknowledged before me this day of , 20_, by ss. Notary Public of My Commission Expires: 3 NOTARY FOR STRUCTURE OWNER ACKNOWLEGED BY: Structure Owner: Date: Name: STATE OF COUNTY OF ss. Title: The foregoing was acknowledged before me this day of , 20_, by as of My Commission Expires: Notary Public 3 TETRA TECH September 12, 2022 Noble Energy/Chevron USA Inc 2115 117th Ave Greeley, CO 80634 RE: Request for Structure Agreement for Windsor East Mine Site To whom it may concern, Martin Marietta leases property proposed as the Windsor East Mine site in Weld County, Colorado. The property is located on the east side of Weld County Road 23, in Sections 35 and 36 of Township 6 North, Range 67 West of the 6th Principal Meridian. Martin Marietta is applying to the Colorado Division of Reclamation, Mining and Safety (DRMS) for a 112 Reclamation Permit. We have identified one or more structures that we believe you own within 200 feet of the affected area associated with this Permit. As part of their application and planning, Martin Marietta has taken steps to prevent any impact to your structure(s). Consistent with DRMS Construction Materials Rule 6, Section 6.4.20, Martin Marietta, as the permit applicant, shall identify permanent man-made structures within 200 feet of the affected area of the proposed mine site and request a notarized agreement with each structure owner, indicating that Martin Marietta will compensate the structure owner for any damage to the structure(s) caused by Martin Marietta. Attached to this letter you will find the Structure Agreement. The Agreement assures you that Martin Marietta will take responsibility for damage to your structure(s) if Martin Marietta's mining or reclamation activities unexpectedly affect your structure(s). The DRMS provided the language used in the Structure Agreement. Also attached to this letter is a draft copy of the Pre -Mining and Mining Plan maps associated with the Windsor East Mine application to help you understand the location of your structures in relation to the permit boundary and Martin Marietta's planned mining cells. Please sign and notarize the Agreement and return the Agreement in the enclosed, stamped and addressed envelope as soon as possible, preferably no later than Monday, October 10, 2022. If you have trouble finding a notary to notarize your signature, please contact Julie Mikulas with Martin Marietta at (970) 407-3631 and she can meet you to notarize. Once received, Martin Marietta will sign the agreement; then we will send you a fully executed copy for your records. If you have any questions about this request, please contact Pam Hora at pam.hora@tetratech.com or (720) 864- 4507. Thank you for your consideration. Sincerely, TETRA TECH Pamela Franch Hora, AICP Senior Planner cc: DRMS Enclosures: Structure Agreement Addressed, stamped envelope to use to return the Structure Agreement Tetra Tech 351 Coffman Street, Suite 200, Longmont, CO 80501 Tel 303-772-5282 Fax 303-772-7039 tetratech.com STRUCTURE AGREEMENT This letter has been provided to you as the owner of a structure on or within 200 feet of a proposed mine site. The State of Colorado, Division of Reclamation, Mining and Safety ("Division") requires that where a mining operation may adversely affect the stability of any significant, valuable and permanent man-made structure located within 200 feet of the affected land, the Applicant shall either: a) Provide a notarized agreement between the Applicant and the Person(s) having an interest in the structure, that the Applicant is to provide compensation for any damages to the structure; or b) Where an agreement cannot be reached, the Applicant shall provide an appropriate engineering evaluation that demonstrates that such structure shall not be damaged by activities occurring at the mining operation; or c) Where such structure is a utility, the Applicant may supply a notarized letter, on utility letterhead, from the owner(s) of the utility that the mining and reclamation activities, as proposed, will have "no negative effect" on their utility. (Construction Materials Rule 6.3.12 and Rule 6.4.19 & Hard RocWMetal Mining Rule 6.3.12 and Rule 6.4.20) The Colorado Mined Land Reclamation Board ("Board") has determined that this form, if properly executed, represents an agreement that complies with Construction Materials Rule 6.3.12(a), Rule 6.4.19(a), and C.R.S. 34- 32.5-115(4)(e) and with Hard Rock/Metal Mining Rule 6.3.12(a), Rule 6.4.20(a), and C.R.S. 34-32-115(4)(d). This form is for the sole purpose of ensuring compliance with the Rules and Regulations and shall not make the Board or Division a necessary party to any private civil lawsuit to enforce the terms of the agreement or create any enforcement obligations in the Board or the Division. The following structures are located on or within 200 feet of the proposed affected area: 1. Oil Well (State 8-36) 2. Oil Well (State 36-3) — Plugged and Abandoned 3. Oil Well (State 7-36) — Plugged and Abandoned 4. Oil Well (State 36-5) — Plugged and Abandoned CERTIFICATION The Applicant, Martin Marietta Materials, Inc., represented by H. Abbott Lawrence as West Division President, does hereby certify that Noble Enerov/Chevron USA (structure owner) shall be compensated for any damage from the proposed mining operation to the above listed structure(s) located on or within 200 feet of the proposed affected area described within Exhibit A, of the Reclamation Permit Application for Windsor East Mine. This form has been approved by the Colorado Mined Land Reclamation Board pursuant to its authority under the Colorado Land Reclamation Act for the Extraction of Construction Materials and the Colorado Mined Land Reclamation Act for Hard Rock, Metal, and Designated Mining Operations. Any alteration or modification to this form shall result in voiding this form. NOTARY FOR PERMIT APPLICANT ACKNOWLEGED BY: Applicant: Martin Marietta Materials, Inc. Representative Name: H. Abbott Lawrence Date: Title: West Division President STATE OF Colorado) ) ss. COUNTY OF Jefferson) The foregoing was acknowledged before me this day of , 20_, by H. Abbott Lawrence as West Division President of Martin Marietta Materials. Inc. My Commission Expires: May 30, 2024 Notary Public 2 NOTARY FOR STRUCTURE OWNER ACKNOWLEGED BY: Structure Owner: Date: Name: Title: STATE OF ss. COUNTY OF ) The foregoing was acknowledged before me this day of , 20_, by as of My Commission Expires: Notary Public 3 TETRA TECH September 12, 2022 Poudre River Trail Corridor, Inc. 321 N 16th Ave. Greeley, CO 80631 RE: Request for Structure Agreement for Windsor East Mine Site To whom it may concern, Martin Marietta leases property proposed as the Windsor East Mine site in Weld County, Colorado. The property is located on the east side of Weld County Road 23, in Sections 35 and 36 of Township 6 North, Range 67 West of the 6th Principal Meridian. Martin Marietta is applying to the Colorado Division of Reclamation, Mining and Safety (DRMS) for a 112 Reclamation Permit. We have identified one or more structures that we believe you own within 200 feet of the affected area associated with this Permit. As part of their application and planning, Martin Marietta has taken steps to prevent any impact to your structure(s). Consistent with DRMS Construction Materials Rule 6, Section 6.4.20, Martin Marietta, as the permit applicant, shall identify permanent man-made structures within 200 feet of the affected area of the proposed mine site and request a notarized agreement with each structure owner, indicating that Martin Marietta will compensate the structure owner for any damage to the structure(s) caused by Martin Marietta. Attached to this letter you will find the Structure Agreement. The Agreement assures you that Martin Marietta will take responsibility for damage to your structure(s) if Martin Marietta's mining or reclamation activities unexpectedly affect your structure(s). The DRMS provided the language used in the Structure Agreement. Also attached to this letter is a draft copy of the Pre -Mining and Mining Plan maps associated with the Windsor East Mine application to help you understand the location of your structures in relation to the permit boundary and Martin Marietta's planned mining cells. Please sign and notarize the Agreement and return the Agreement in the enclosed, stamped and addressed envelope as soon as possible, preferably no later than Monday, October 10, 2022. If you have trouble finding a notary to notarize your signature, please contact Julie Mikulas with Martin Marietta at (970) 407-3631 and she can meet you to notarize. Once received, Martin Marietta will sign the agreement; then we will send you a fully executed copy for your records. If you have any questions about this request, please contact Pam Hora at pam.hora@tetratech.com or (720) 864- 4507. Thank you for your consideration. Sincerely, TETRA TECH %itAa-aEW-64,- Pamela Franch Hora, AICP Senior Planner cc: DRMS Enclosures: Structure Agreement Addressed, stamped envelope to use to return the Structure Agreement Tetra Tech 351 Coffman Street, Suite 200, Longmont, CO 80501 Tel 303-772-5282 Fax 303-772-7039 tetratech.com STRUCTURE AGREEMENT This letter has been provided to you as the owner of a structure on or within 200 feet of a proposed mine site. The State of Colorado, Division of Reclamation, Mining and Safety ("Division") requires that where a mining operation may adversely affect the stability of any significant, valuable and permanent man-made structure located within 200 feet of the affected land, the Applicant shall either: a) Provide a notarized agreement between the Applicant and the Person(s) having an interest in the structure, that the Applicant is to provide compensation for any damages to the structure; or b) Where an agreement cannot be reached, the Applicant shall provide an appropriate engineering evaluation that demonstrates that such structure shall not be damaged by activities occurring at the mining operation; or c) Where such structure is a utility, the Applicant may supply a notarized letter, on utility letterhead, from the owner(s) of the utility that the mining and reclamation activities, as proposed, will have "no negative effect" on their utility. (Construction Materials Rule 6.3.12 and Rule 6.4.19 & Hard Rock/Metal Mining Rule 6.3.12 and Rule 6.4.20) The Colorado Mined Land Reclamation Board (`Board) has determined that this form, if properly executed, represents an agreement that complies with Construction Materials Rule 6.3.12(a), Rule 6.4.19(a), and C.R.S. 34- 32.5-115(4)(e) and with Hard Rock/Metal Mining Rule 6.3.12(a), Rule 6.4.20(a), and C.R.S. 34-32-115(4)(d). This form is for the sole purpose of ensuring compliance with the Rules and Regulations and shall not make the Board or Division a necessary party to any private civil lawsuit to enforce the terms of the agreement or create any enforcement obligations in the Board or the Division. The following structures are located on or within 200 feet of the proposed affected area: 1. Poudre Trail in 40' Easement CERTIFICATION The Applicant, Martin Marietta Materials, Inc., represented by H. Abbott Lawrence as West Division President, does hereby certify that Poudre River Trail Corridor, Inc (structure owner) shall be compensated for any damage from the proposed mining operation to the above listed structure(s) located on or within 200 feet of the proposed affected area described within Exhibit A, of the Reclamation Permit Application for Windsor East Mine. This form has been approved by the Colorado Mined Land Reclamation Board pursuant to its authority under the Colorado Land Reclamation Act for the Extraction of Construction Materials and the Colorado Mined Land Reclamation Act for Hard Rock, Metal, and Designated Mining Operations. Any alteration or modification to this form shall result in voiding this form. NOTARY FOR PERMIT APPLICANT ACKNOWLEGED BY: Applicant: Martin Marietta Materials, Inc. Representative Name: H. Abbott Lawrence Date: Title: West Division President STATE OF Colorado) ss. COUNTY OF Jefferson) The foregoing was acknowledged before me this day of , 20_, by H. Abbott Lawrence as West Division President of Martin Marietta Materials, Inc. My Commission Expires: May 30, 2024 Notary Public 2 NOTARY FOR STRUCTURE OWNER ACKNOWLEGED BY: Structure Owner: Date: Name: Title: STATE OF ss. COUNTY OF ) The foregoing was acknowledged before me this day of , 20_, by Notary Public of My Commission Expires: 3 TETRA TECH September 12, 2022 Poudre Valley REA, Inc 7649 Rea Parkway Fort Collins, CO 80528 RE: Request for Structure Agreement for Windsor East Mine Site To whom it may concern, Martin Marietta leases property proposed as the Windsor East Mine site in Weld County, Colorado. The property is located on the east side of Weld County Road 23, in Sections 35 and 36 of Township 6 North, Range 67 West of the 6th Principal Meridian. Martin Marietta is applying to the Colorado Division of Reclamation, Mining and Safety (DRMS) for a 112 Reclamation Permit. We have identified one or more structures that we believe you own within 200 feet of the affected area associated with this Permit. As part of their application and planning, Martin Marietta has taken steps to prevent any impact to your structure(s). Consistent with DRMS Construction Materials Rule 6, Section 6.4.20, Martin Marietta, as the permit applicant, shall identify permanent man-made structures within 200 feet of the affected area of the proposed mine site and request a notarized agreement with each structure owner, indicating that Martin Marietta will compensate the structure owner for any damage to the structure(s) caused by Martin Marietta. Attached to this letter you will find the Structure Agreement. The Agreement assures you that Martin Marietta will take responsibility for damage to your structure(s) if Martin Marietta's mining or reclamation activities unexpectedly affect your structure(s). The DRMS provided the language used in the Structure Agreement. Also attached to this letter is a draft copy of the Pre -Mining and Mining Plan maps associated with the Windsor East Mine application to help you understand the location of your structures in relation to the permit boundary and Martin Marietta's planned mining cells. Please sign and notarize the Agreement and return the Agreement in the enclosed, stamped and addressed envelope as soon as possible, preferably no later than Monday, October 10, 2022. If you have trouble finding a notary to notarize your signature, please contact Julie Mikulas with Martin Marietta at (970) 407-3631 and she can meet you to notarize. Once received, Martin Marietta will sign the agreement; then we will send you a fully executed copy for your records. If you have any questions about this request, please contact Pam Hora at pam.hora@tetratech.com or (720) 864- 4507. Thank you for your consideration. Sincerely, TETRA TECH '7°a/int/tit ',,S,Aa—e-454,-- Pamela Franch Hora, AICP Senior Planner cc: DRMS Enclosures: Structure Agreement Addressed, stamped envelope to use to return the Structure Agreement Tetra Tech 351 Coffman Street, Suite 200, Longmont, CO 80501 Tel 303-772-5282 Fax 303-772-7039 tetratech.com STRUCTURE AGREEMENT This letter has been provided to you as the owner of a structure on or within 200 feet of a proposed mine site. The State of Colorado, Division of Reclamation, Mining and Safety ("Division") requires that where a mining operation may adversely affect the stability of any significant, valuable and permanent man-made structure located within 200 feet of the affected land, the Applicant shall either: a) Provide a notarized agreement between the Applicant and the Person(s) having an interest in the structure, that the Applicant is to provide compensation for any damages to the structure; or b) Where an agreement cannot be reached, the Applicant shall provide an appropriate engineering evaluation that demonstrates that such structure shall not be damaged by activities occurring at the mining operation; or c) Where such structure is a utility, the Applicant may supply a notarized letter, on utility letterhead, from the owner(s) of the utility that the mining and reclamation activities, as proposed, will have "no negative effect" on their utility. (Construction Materials Rule 6.3.12 and Rule 6.4.19 & Hard Rock/Metal Mining Rule 6.3.12 and Rule 6.4.20) The Colorado Mined Land Reclamation Board ("Board") has determined that this form, if properly executed, represents an agreement that complies with Construction Materials Rule 6.3.12(a), Rule 6.4.19(a), and C.R.S. 34- 32.5-115(4)(e) and with Hard Rock/Metal Mining Rule 6.3.12(a), Rule 6.4.20(a), and C.R.S. 34-32-115(4)(d). This form is for the sole purpose of ensuring compliance with the Rules and Regulations and shall not make the Board or Division a necessary party to any private civil lawsuit to enforce the terms of the agreement or create any enforcement obligations in the Board or the Division. The following structures are located on or within 200 feet of the proposed affected area: 1. Overhead Electric Line 2. Overhead Electric Line and Underground Fiber Optic Cable CERTIFICATION The Applicant, Martin Marietta Materials, Inc., represented by H. Abbott Lawrence as West Division President, does hereby certify that Poudre Valley REA (structure owner) shall be compensated for any damage from the proposed mining operation to the above listed structure(s) located on or within 200 feet of the proposed affected area described within Exhibit A, of the Reclamation Permit Application for Windsor East Mine. This form has been approved by the Colorado Mined Land Reclamation Board pursuant to its authority under the Colorado Land Reclamation Act for the Extraction of Construction Materials and the Colorado Mined Land Reclamation Act for Hard Rock, Metal, and Designated Mining Operations. Any alteration or modification to this form shall result in voiding this form. NOTARY FOR PERMIT APPLICANT ACKNOWLEGED BY: Applicant Martin Marietta Materials, Inc. Representative Name: H. Abbott Lawrence Date: Title: West Division President STATE OF Colorado) ss. COUNTY OF Jefferson) The foregoing was acknowledged before me this day of , 20_, by H. Abbott Lawrence as West Division President of Martin Marietta Materials, Inc. My Commission Expires: May 30, 2024 Notary Public 2 NOTARY FOR STRUCTURE OWNER ACKNOWLEGED BY: Structure Owner: Date: Name: STATE OF COUNTY OF ) ss. Title: The foregoing was acknowledged before me this day of , 20_, by as of My Commission Expires: Notary Public 3 TETRA TECH September 12, 2022 Town of Windsor 301 Walnut Street Windsor, CO 80550 RE: Request for Structure Agreement for Windsor East Mine Site To whom it may concern, Martin Marietta leases property proposed as the Windsor East Mine site in Weld County, Colorado. The property is located on the east side of Weld County Road 23, in Sections 35 and 36 of Township 6 North, Range 67 West of the 6th Principal Meridian. Martin Marietta is applying to the Colorado Division of Reclamation, Mining and Safety (DRMS) for a 112 Reclamation Permit. We have identified one or more structures that we believe you own within 200 feet of the affected area associated with this Permit. As part of their application and planning, Martin Marietta has taken steps to prevent any impact to your structure(s). Consistent with DRMS Construction Materials Rule 6, Section 6.4.20, Martin Marietta, as the permit applicant, shall identify permanent man-made structures within 200 feet of the affected area of the proposed mine site and request a notarized agreement with each structure owner, indicating that Martin Marietta will compensate the structure owner for any damage to the structure(s) caused by Martin Marietta. Attached to this letter you will find the Structure Agreement. The Agreement assures you that. Martin Marietta will take responsibility for damage to your structure(s) if Martin Marietta's mining or reclamation activities unexpectedly affect your structure(s). The DRMS provided the language used in the Structure Agreement. Also attached to this letter is a draft copy of the Pre -Mining and Mining Plan maps associated with the Windsor East Mine application to help you understand the location of your structures in relation to the permit boundary and Martin Marietta's planned mining cells. Please sign and notarize the Agreement and return the Agreement in the enclosed, stamped and addressed envelope as soon as possible, preferably no later than Monday, October 10, 2022. If you have trouble finding a notary to notarize your signature, please contact Julie Mikulas with Martin Marietta at (970) 407-3631 and she can meet you to notarize. Once received, Martin Marietta will sign the agreement; then we will send you a fully executed copy for your records. If you have any questions about this request, please contact Pam Hora at pam.hora@tetratech.com or (720) 864- 4507. Thank you for your consideration. Sincerely, TETRA TECH Pamela French Hora, AICP Senior Planner cc: DRMS Enclosures: Structure Agreement Addressed, stamped envelope to use to return the Structure Agreement Tetra Tech 351 Coffman Street, Suite 200, Longmont, CO 80501 Tel 303-772-5282 Fax 303-772-7039 tetratech.com STRUCTURE AGREEMENT This letter has been provided to you as the owner of a structure on or within 200 feet of a proposed mine site. The State of Colorado, Division of Reclamation, Mining and Safety ("Division") requires that where a mining operation may adversely affect the stability of any significant, valuable and permanent man-made structure located within 200 feet of the affected land, the Applicant shall either: a) Provide a notarized agreement between the Applicant and the Person(s) having an interest in the structure, that the Applicant is to provide compensation for any damages to the structure; or b) Where an agreement cannot be reached, the Applicant shall provide an appropriate engineering evaluation that demonstrates that such structure shall not be damaged by activities occurring at the mining operation; or c) Where such structure is a utility, the Applicant may supply a notarized letter, on utility letterhead, from the owner(s) of the utility that the mining and reclamation activities, as proposed, will have "no negative effect" on their utility. (Construction Materials Rule 6.3.12 and Rule 6.4.19 & Hard Rock/Metal Mining Rule 6.3.12 and Rule 6.4.20) The Colorado Mined Land Reclamation Board ("Board) has determined that this form, if properly executed, represents an agreement that complies with Construction Materials Rule 6.3.12(a), Rule 6.4.19(a), and C.R.S. 34- 32.5-115(4)(e) and with Hard Rock/Metal Mining Rule 6.3.12(a), Rule 6.4.20(a), and C.R.S. 34-32-115(4)(d). This form is for the sole purpose of ensuring compliance with the Rules and Regulations and shall not make the Board or Division a necessary party to any private civil lawsuit to enforce the terms of the agreement or create any enforcement obligations in the Board or the Division. The following structures are located on or within 200 feet of the proposed affected area: 1. Weld County Road 23 (60' ROW) 2. Future Crossroads Boulevard ROW CERTIFICATION The Applicant, Martin Marietta Materials, Inc., represented by H. Abbott Lawrence as West Division President, does hereby certify that the Town of Windsor (structure owner) shall be compensated for any damage from the proposed mining operation to the above listed structure(s) located on or within 200 feet of the proposed affected area described within Exhibit A, of the Reclamation Permit Application for Windsor East Mine. This form has been approved by the Colorado Mined Land Reclamation Board pursuant to its authority under the Colorado Land Reclamation Act for the Extraction of Construction Materials and the Colorado Mined Land Reclamation Act for Hard Rock, Metal, and Designated Mining Operations. Any alteration or modification to this form shall result in voiding this form. NOTARY FOR PERMIT APPLICANT ACKNOWLEGED BY: Applicant: Martin Marietta Materials, Inc. Representative Name: H. Abbott Lawrence Date: Title: West Division President STATE OF Colorado) COUNTY OF Jefferson ) ss. The foregoing was acknowledged before me this day of , 20_, by H. Abbott Lawrence as West Division President of Martin Marietta Materials, Inc. Notary Public My Commission Expires: May 30, 2024 2 NOTARY FOR STRUCTURE OWNER ACKNOWLEGED BY: Structure Owner: Date: Name: STATE OF COUNTY OF ss. Title: The foregoing was acknowledged before me this day of , 20_, by as of My Commission Expires: Notary Public 3 Public Notice Affidavit per 1.6.2(1)(b) of Construction Materials Rules and Regulation NOTICE This site is the location of a proposed construction materials operation. Martin Marietta Materials, 1800 N. Taft Hill Road, Fort Collins, CO 80521 (970) 407-3631 has applied for a Reclamation Permit with the Colorado Mined Land Reclamation Board. Anyone wishing to comment on the application may view the application at the Weld, County Clerk or Recorder's Office at mod, Coin- ('( -(ryibe 13 tvcL I t5b b . I Gvee.64, and should serfd comments prior to the end of the public confinent period to the Division of Reclamation, Mining and Safety, 1313 Sherman St, Room 215, Denver, Colorado 80203. Certification: I, Jti1e14GktdctS , hereby certify that I posted a sign containing the above notice for the proposed permit area known as the (Name of Operation) on (Date Posted) q -- 2 2 , 'ZD ZZ- . SignatureCl?,C14)(attefr",----- Date —2,022. 2 TETRA TECH Technical Memo To: Julie Mikulas, Martin Marietta From: Aric Notating, PE - Geotechnical Engineer, Tetra Tech Caleb Stock, PE Project Geotechnical Engineer, Tetra Tech Date: September 21, 2022 Subject: Slope Stability and Setback Exhibit- Windsor East Mine; Tetra Tech Job No.117-8741006 This Technical Memorandum (Tech Memo) describes the analysis performed to evaluate the slope stability of proposed reclamation slopes and minimum setback distance requirements between the proposed mine limit and identified structures or utilities as required per the Mine Land Reclamation Board (MLRB) Construction Materials Rules 6.3.12(b( and 6.4.19(b( and the memorandum from the DBMS dated May 16, 2018 (Cazier & Wait, 2018). The setbacks reported in this memo represent the minimum setback based on the physical and geotechnical input parameters for each model. The required setback may be greater based on regulatory requirements. 1.0 SITE LAYOUT The Windsor East Mine site is 150.25 acres. The mine is located in the Town of Windsor, Colorado. The site lies within the northwest quarter of Section 36 in Township 6 North, Range 67 West. Land use around the site is aggregate mining, residential, heavy industrial, and agricultural. County Road 23, a gravel north -south road, forms the western border of the mine property. An unnamed gravel farm access road forms the northern border, and the Cache la Poudre River corridor is along the southern border of the site. Martin Marietta's Parsons Mine site is adjacent to the site on the east. 2.0 GEOLOGY The site is in the alluvial valley of the Cache la Poudre River. Geologic mapping indicates that the mine is within the Post - Piney Creek alluvium (Colton, 1978). The bedrock underlying the alluvium may be the Arapahoe Formation, which consists of claystone and sandstones. Deere &Ault Consultants, Inc. drilled eight borings in 2017 for the property owner (Attachment A), and Martin Marietta drilled 16 borings across the parcel in December 2019 (Attachment B) with similar findings. This information was used to determine the subsurface conditions across the Windsor East Mine area. Drilling logs indicate the general subsurface profile consists of approximately 3 to 9 feet of silty to clayey sand overburden, overlying approximately 6 to 17 feet of well -graded gravel with varying amounts of sand and silt, overlying claystone bedrock. Groundwater was encountered at depths ranging from 4 to 7 feet in the most recent 2019 Martin Marietta borings. 3.0 SLOPE STABILITY ANALYSES This slope stability analysis was performed using the computer program Slide2 (2021), developed by Rocscience, Inc., to determine the factors of safety of critical slip surfaces. The software is capable of computing factors of safety fora range of materials using finite element analysis and limit equilibrium principles. Spencer's method of slices (Spencer, 1967) was used to calculate the safety factor for the individual failure surfaces. The Slide2 program incorporates a search routine to locate those failure surfaces with the lowest factor of safety within user -defined search limits. Trial failure surfaces were defined with "entry and exit" parameters, resulting in a range of possible locations to search for the critical potential failure surface (lowest factor of safety). Several assumptions were made for the models including: • Surficial geology was modeled based on the 2017 Deere & Ault report and 2019 Martin Marietta borings. • Geologic layers are generally horizontal in the subsurface. • Groundwater elevations from 2019 are representative of field conditions. • The highwall will be concurrently reclaimed. TETRA TECH 351 Coffman Street, Suite 200, Longmont, CO 80501 Tel+1.303.772.5282 Fax+1.303.772.7039 I tetratech.com Slope Stability and Setback Exhibit - Windsor East Mine September 21, 2022 The mine slope and a reclamation slope were considered during this stability analysis for the respective sections. Tetra Tech understands that Martin Marietta plans to concurrently backfill along the highwall slope using compacted overburden from the site. Backlit( will be placed in lifts and compacted to a minimum of 95% of maximum dry density as determined by standard Proctor. The grade modeled for the reclamation slope was 3H:1V and the highwall is assumed to be 1H:1V. Select sections were modeled with a planned 8 -foot -high temporary stockpile placed 8 feet from the crest of the reclaimed slope section. The stockpile will consist of overburden or topsoil material excavated from the mining process and will be constructed at a 3H:1V slope. 3.1 ANALYZED SECTIONS Critical manmade structures within 200 feet of proposed mining limits were modeled during this evaluation. A critical structure is defined by the DRMS as a manmade structure that poses a potential human safety risk, major environmental impact, or major repair cost if the slope were to fail. The cross sections and profiles were created using data referenced above and proposed mining plans shown on Figure A in Attachment C. This plan shows the proposed site layout and locations to critical structures, easements, and the topography in the area. Sections were created at critical structures in the vicinity, and the estimated depth to bedrock from the subsurface studies was used to create the profile for the slope stability analysis. A total of twelve slope stability models were prepared to evaluate the risk of damage to critical manmade structures for this evaluation as shown in Attachment C. Below is a description of the 12 model sections: Section 1 Section 1, (Figures la to lf) evaluated the proposed setback from the farm access road and northern permit boundary to the north side of Cell B. This section also included analysis of a proposed temporary stockpile shown on Figures is and 1d. Section 2 Section 2, (Figures 2a to 2f) evaluated the proposed setback from County Road 23 and the western permit boundary to the west side of Cell B. This section also included analysis of a proposed temporary stockpile shown on Figures 2c and 2d. Section 3 Section 3, (Figures 3a to 3d) evaluated the proposed setback from the future right-of-way for Crossroads Boulevard to Cell B. Section 4 Section 4, (Figures 4a to 4d) evaluated the proposed setback from the future right-of-way for Crossroads Boulevard to Cell A. Section 5 Section 5, (Figures 5a to 5d) evaluated the proposed setback from the future right-of-way for Crossroads Boulevard to Cell B. Section 6 Section 6, (Figures 6a to 6d) evaluated the proposed setback from the future right-of-way for Crossroads Boulevard to Cell C. Section 7 Section 7, (Figures 7a to 7h) evaluated the proposed setback from the easement of an abandoned pipeline to Cells A and C. Section 8 Section 8, (Figures 8a to 8d) evaluated the proposed setback from the eastern property boundary and existing Parsons Mine excavation to Cell A. TETRA TECH 2 Slope Stability and Setback Exhibit - Windsor East Mine September 21, 2022 Section 9 Section 9, (Figures 9a to 90 evaluated the proposed setback from the southwestern property boundary to Cell D. This section also included analysis of a proposed temporary stockpile shown on Figures 9c and 9d. Section 10 Section 10, (Figures 10a to 10d) evaluated the proposed setback from the Cache la Poudre River and south permit boundary to Cell C. Section 11 Section 11, (Figures ila to 11d) evaluated the proposed setback from the Cache la Poudre River and south permit boundary to Cell A. Section 12 Section 12, (Figures 12a to 12h) evaluated the proposed setback from the water pipeline to Cells C and D. 3.2 MATERIAL STRENGTH PROPERTIES Material properties used in the analysis were based on boring logs in the area from the 2017 Deere & Ault report and 2019 Martin Marietta borings and typical published strength values. Table 1. Model Material Input Parameters Location Unit Weight (pcf) Cohesion (psf) Friction Angle (deg) UCS (psf) Overburden Sand and Gravel Silty Sand Compacted Overburden Claystone 110 120 120 112 140 200 0 0 109. 23 30 28 28 70,000 'pcf= pounds per cubic foot; psf= pounds per square foot; UCS = unconfined compressive strength Static and seismic stability analyses were performed for each of the sections described above. Seismic analysis accounts for the effects of horizontal acceleration experienced during an earthquake. The horizontal acceleration used was 0.08 g and corresponds to an event with a 2% probability of exceedance in 50 years (return interval of 2,475 years). The acceleration value was obtained from United States Geological Survey Unified Hazard Tool which considers the soil/rock classification of the upper 100 feet (Classification C selected) and location of the site. The following minimum factor of safety criteria requirements from the DRMS were used: • The minimum factor of safety for the static analysis is 1.5. • The minimum factor of safety for the seismic analysis is 1.3. 3.3 SLOPE STABILITY RESULTS The tables below present stability model results with graphical output presented in Attachment C. The setbacks listed are the entry/exit of the minimum factor of safety failure circle for the reclaimed slope and the location of the entry/exit of the failure circle for the minimum factor of safety as required by the DRMS for the mine slope. Model results indicate that the minimum required factor of safety is achieved for the reclamation slope models (without and with stockpile where applicable) and appropriate setbacks are presented for the relatively steeper mine slope. Stockpiles should be constructed at least 8 horizontal feet from the crest of the highwall and after the reclaimed slope has been constructed. TETRA TECH 3 September 21, 2022 Slope Stability and Setback Exhibit - Windsor East Mine Table 2. Factors of Safety and Setback for proposed reclamation slope Factor of Safety Setback (ft) Factor of Safety Setback (ft) Location Object Measured From (Static) (Static) (Pseudostatic) (Pseudostatic) Section 1 Section 2 Section 3 Section 4 Section 5 Section 6 Section 7 (SW) Section 7 (NE) Section 8 Section 9 Section 10 Section 11 Section 12 (SW) Section 12 (NE) L8 1.7 1.8 2.0 2.0 1.8 2.0 L9 L9 2.2 2.3 2.0 2.4 2.5 6 7 8 6 6 7 6 4 1.4 10 Edge of ROW L3 9 Edge of ROW 1.4 9 Future Crossroads Blvd ROW 1.5 10 Future Crossroads Blvd ROW 1.6 9 Future Crossroads Blvd ROW L4 9 Future Crossroads Blvd ROW L5 7 Pipeline Easement 1.5 8 Pipeline Easement 1.5 8 Edge of ROW L7 9 Edge of ROW L7 7 Cache la Poudre River L5 8 Cache la Poudre River L9 7 Water Pipeline L9 7 Water Pipeline Table 3. Factors of Safety and Setback for proposed mine slope Location Factor of Safety Setback (ft) Factor of Safety Setback (ft) Object Measured (Static) (Static) (Pseudostatic) (Pseudostatic) From Section 1 Section 2 Section 3 Section 4 Section 5 Section 6 Section 7 (SW) Section 7 (NE) Section 8 Section 9 Section 10 Section 11 Section 12 (SW) Section 12 (NE) L5 L5 1.5 1.5 1.5 25 1.5 35 L5 27 L5 24 1.5 30 1.5 25 1.5 21 1.5 27 1.5 17 1.5 17 37 34 28 26 1.3 1.3 1.3 L3 1.3 L3 1.3 L3 L3 L3 L3 1.3 1.3 1.3 48 46 36 30 29 46 34 3 37 29 20 33 17 18 Edge of ROW Edge of ROW Future Crossroads Blvd ROW Future Crossroads Blvd ROW Future Crossroads Blvd ROW Future Crossroads Blvd ROW Pipeline Easement Pipeline Easement Edge of ROW Edge of ROW Cache la Poudre River Cache la Poudre River Water Pipeline Water Pipeline TETRA TECH 4 Slope Stability and Setback Exhibit - Windsor East Mine September 21, 2022 Table 4. Factors of Safety for proposed reclamation slope with stockpile Location Factor of Safety Factor of safety (Static) (Pseudostatic) Object Measured From Section 1 Section 2 Section 9 L7 1.7 1.9 L3 L3 1.5 Edge of ROW Edge of ROW Edge of ROW 4.0 LIMITATIONS The findings presented in this memorandum are based on information from previous investigations at the site and strength parameters of the modeled materials assumed from typical published values. Tetra Tech should be contacted if the mining plans change or if the subsurface conditions vary from the descriptions here as reevaluation may be necessary to investigate the potential effects of the changes on the factors of safety for the critical structures determined in this evaluation. Factors of safety for this evaluation were limited to effects at the critical manmade structures and were not an evaluation of the overall mining highwall or mine slopes. Prepared By:• Reviw1ed,By: Aric Hotaling, P.E. Caleb Stock, P.E. Geotechnical Engineer Senior Geotechnical Engineer Attachments • Attachment A - Geotechnical Data from Deere &Ault, 2017 • Attachment B - Geotechnical Data from Martin Marietta, 2019 • Attachment C - Figure A - Location of Slope Stability Cross Sections • Attachment C - Figures 1 through 12 - Slope Stability Analysis Results 0:WrojectsDngmont\87411117-8741006SupportDocsCalcsIStability\Stability Analysis Tech Memo_fina11022 0911.docx TETRA TECH 5 ATTACHMENT A: GEOTECHNICAL DATA FROM DEERE & AULT, 2017 r 13 • IN '\letk - LEGEND: B-101 TP-129 cia 0 NO. 10 I �• • 109 4 S. • 9:14-111 13 (( 1 'h l _ - FII Try IF i i I EXISTING CONTOURS SAND & GRAVEL ISOPACH CONTOURS PROPOSED MINING LIMITS DEERE & AULT EXPLORATORY BORINGS DEERE & AULT TEST PITS TERRACON EXPLORATORY BORINGS, 1997 --I 8 122. B 8-140 SIMMNI I e .octir TP-160-"' 8-121 88-124 ea b 51 b 0 500 1000 i SCALE IN FEET ,If JOB NO. 0532.007.00 GREAT WESTERN PROPERTY Sand & Gravel Isopach Map DEERE & AULT FIGURE NO. CC) N S LJ l_ I A N f s, I N C:- 5 DATE: JULY 2017 i SCALE: AS NOTED LOG OF BORING No. 20 Page 1 of 1 CLIENr Kodak Colorado Division Amami./ irNGINNEt are South of Windsor Plant Windsor, Colorado PROJECT elltudy o A' DESCRIPTION i DEPTH (FT.) TESTS w �SAf7lLl Z mot" • 2, iii .1.... w a +s i _ 0.5 6" TOPSOIL CE .i4Y SAi.16U 2.0 moist, loose .--= CSC - _ - ,Btowo, .GRAM' SAND WITH $IT T_8I (RAVEL Tan, moist to wet Loose to Exam de e i With Gravel - medium dense Composite sample 9 7 to 12 ft. 17.0 Sw' 1 SM SS' :12'1 ., 7 6 5 - i a 2' BS '3 SS 12' 17 17 10 - 4 SS 12"'. 23 16 15 a _ .., WRATHERl b go SILT T IS_I AYSTOI • Vine/black. moist, moderately hard 5 , SS 7" 50/.6 1S, ,CT0;'I TordoR'1_Aiis7Til;IF ue/black, moist, bald I BOTTOM OF BORING TOE STRATIFICAtioo sins REPRESENT TOE APPROXIMATE BOUNDARY LENS BETWEEN 001L AND ROCK TYPES: IN -SITU, THE TRANSITION MAT RE Gum. WATER.. MtiLOBSE&VATETNS'BORING STARTED, 124.1'i ry WL S-0' w.D: �S' A.B.COMPLETED rracon RI° CME-55 F°R MA!i DML vii. ? Water ducked i day A.B. APPROVED ma, JOS t 20975157 U 0 0 U, O' O -J O E In 3: a Az a 0 a O cn O1 ma - to O 0 c • it >. 4755 4750 4745 4740 .01011 4735 — 4730 O Q _ w 4725 J W 4720 4715 4710 J 4705 -� 4700 4695 - PHASE 8A, 8B, 8C B-120 EL=4738.4 N:1407979.394 E:3181670.688 i6 9.3 23.0 26.8 LEGEND: 12 29 32 47 {-200=4.1 50/4" TP-138 EL=4738.5 N:1407970.864 E:3181669.936 6124 8 i 10.5 B-121 EL=4725,4 N:1407953,967 E:3183795.921 i 7.0 15,0 15.3 19.5 B-122 E1=4731.2 N:1408083,811 E:3182786.786 6/6 5.0 14.5 17.0 t-� ra e 2 CLAY: VERY &Of- rO SOF* SAtY. SI-TY FINIS GRAINED, S1JGNTLY MOIST -O MOIST, GRAY -t7 DARK BR:WN S*DDF FATLY P1A59IC _ ORAL ROOTS r'caE ICL, CH, SCI CLAYLY SAA''J0: YEKY LOOSE TO WILL . M UL9SL. CLAYEY 'O VERY CLAYLY. SU Y ENE "O MEOW GRAINED, LOCAL GRAVEL, ORY "O WET, BROWN TO DARK BROW% t oh TO VQDERAT>cLY PLASTIC (SCI SI.'-Y SANDI VERY LOO* TO AEDILM DES. Wry TO VERY SILTY. CLAYET. FINE TO MEDIUM GMAINEO LOCAL GRAYL_ r NAY '71) WL T. MOM TO IDARK BRDMV'N. P4QN TO VERY LOW PLASTIC CM, ALI SAND! LODGE POORLY GRADED, FINE TO MEDIUM DRAINED, MOIST TO r.ET, BROWN To6ROWN-ORA'Y m PINKISH 311oV,N ISM, £4'. SAND & GRAVEL: VELUM JL►451 1 0 ARV 4'tN5_. to 14 ' GMA': LL 1O GRAVELLY SAND, LOCA_ ODS LES WE:_ GRACED, FINE TO COARSE SRAN=_L SIOJD SMALL GRAVEL OP -C 11 I'dr:H 22SS.ES ROUNDED ^.RAVEL. At+C' cxisal FS SIGHTLY MCrI5T 1O WE` PINK151• BROWN 1O LIGHT BROWN TO BRowN :5 .. GW, GM) voL A'HERED CLAYSIC041; HAN+.J ;S0ILSI.VERY LOW TO LOW STRIENO1H BEDROCK DRY TO MOIST, I.'QTTLED 3FLOWTJ -D EttlIANI_F' TAN, LOCAL Ikatl STAINI9 MIXTJRF OF IIELIROCK CO. rims .VODFNATFI r POST): 9L,OGY CLAYS ONE: HAM TO VERY HARD :SOILSI, VERY LOW TO LOW STRENGTH i3EDROG{, DRY TO SLIGHTLY MfIST, CRAY TO DARK CRAY, LOW TO MODERATE Y IR.ASTIC..4:.AL SILIS1CNC INILKtt_US.KOOKY. SLIL'�"TLY MA THERM 1G >•REW+ NEs-i SEDRDOKt5ANI3 AND GRAVEL CUM'AC' 20.3 4 WT 19 50/4" 9.9 54 B-123 EL=4732.4 N:1407416.113 E:3181981.420 6/6 8.0 i 18.0 24.7 2 23 48 78 -200 = 72.0 LL=31 PI=16 50/2" B-124 ELz4724.5 N:1406932.635 E:3183783.421 6/4 6.0 13.0 19.5 2 28 50/8" 50/6" APPROXIMATE CEPTH GF GEOLOGY; O3MTAGT A'FT'ER E'+IZOLINTERED DJii swll1_INt'.ANC IJAIl %et ASUiatFC3 -23 S ANDARD $e L ITSPCCPI BI OW COUNT, IkA.MBFR rte VALUE.; INUICAtES NuMB€I4 O' eta Of A 140 _B. HAMMER =REE FALLI'IO 31I INCHES RE3LIRED TO DRIVE THE SAMPI.FR 1 FOOT OR '-c - INDICATF IN 'PIMA- Tr INDICA-LS 114: SAMP_l-1 47VANCFD'rtrlTH RESTING WEIGHT OF -HE' 1-.4MMFR Y.9 DEP71- OF BORING (I-1) B-126 EL=4731.5 N:1405719.876 E:3181424.704 6/4 7 0 S 15.3 19.6 NOTES.: TP-137 EL -4731.6 N:1405711.579 E:3181413.017 6.3 9.0 200 = 81.8 LL=31 PI= 10 B-127 EL=4725.6 N:1405474.402 E:3182910.139 614 3.0 i 13.5 14.1 19.3 32 25 5015" 50/4" 1.8 644 TP-139 EL -4725.5 N:1405477.040 E:3182901.265 rov- Ski •,o es I. 0.- 9.0 Ii. DRAT -CRY SORMGB WERE MIL LEO Sr TINT h.3-13 AN) 64" 5 .Js1nJC, A TRUCKA CA.A—ED CME 66 DRILL *1G. SONING41 1WME DRIL FC WITH t.zt.I4 ►I I.O. HO. CM' STEM AUCFRS, 2. EXPLC1Rh'ORY 'EST PI1S'WERE EXZAVATED ON fr24.' 3 US14jti A DEERE 3` 3SC; RI..EBFR-TIRF 34: K}•{]F, BO'RIMG an1..?'S WAS INTENTIONALLY NDT DRILLED _►..E TO DCNFJC'S MTH NEAR aTItfTY LINES AND CRcs'1-ANDS IN '-' AREA, 5. d.J EXPLORATORY LOCK -DNS ANC E_='. ATIONS EXCED7 =CR 5043 WERE L.R'. r Yto 8'Y KN : SURVIVORS OH -• -' 3 TOR THE C.EOTtCHNIt A. Ih :'ES flcW ON. 'APS CDONCINA 1 ES /•NE.: IN t EKPoLAT IN 3 ON A 1 cY O;:RAR'-'Y Mk" *WERE JSFD FCC: 3-140, E. LAE& BErvits.E144 \t&-_RIA_s HEP+ti$En• rE EOUt1D.L;tI_G Bc.11."/LIN TYPES ANC TRANSITI•' tlS MA'•' 3F MAMA. , 7. GROLNThATtRLEVELE HERE VEASLRED AT THE TIME O DRILLIVD. GROUTOSATER LEVELS W '• Ft IJC.TUATF SFA.Sf941 I - Ar4C 0l:E TO SITE MNI'J Mt °MAT OPEI It TIu'a5, • LAS TANG: •2'40=%BY arele'r CASSlNO -HE 0200 SIEVE I-I'les II =I.IQL:ID LIMIT PI-PLASTMIT INDILx Pe=NW PLASTIC MATE VL Scale In Feet 10 5 0 7 -4755 - 4750 - 4745 -- 4740 -4735 r-4730 0 _ Q 4725 w 4720 r t- 4715 4710 -4705 4700 - 4695 JOB NO. 0494.002.00 GREAT WESTERN PROPERTY Summary Logs of Exploratory Borings and Test Pits DEERE & A U L T FIGURE N0. 6 DATE: CONSUL -1 A NTS. I NC - 8-6-13 [SCALE: AS NOTED J ATTACHMENT B: GEOTECHNICAL DATA FROM MARTIN MARIETTA, 2019 Site Name: Site Location: Boring Number: Latitude: Date Started: Martin Marietta arc., 1- toe�4j'u t co i Rig Type: (Jy1(f 56" Drilling Method: S ! 1 5),,M- Surface Elevation (Feet): y'7 3rL Depth to Bedrock (Feet): Backfill Type: CJ �}� �, g Depth (Feet) 2- 6 (-- Logged By: Longitude: Date Completed: Drilling Contractor: Borehole Diameter: Depth to Water (Feet): Boring Total Depth (Feet): )c�L/ .. Y6 Ica /2 H 1IW!4 /7 Geologic Log Sample Interval USC Designation Rounding 111 Grading (21 Time, Material Description, and Comments Top of Groundwater) 5, PI c 17 f -Nrc i s l, fit) 4J ,-, (''J` Liu[h g CroweAi1 Sa...It_ w,4 Si 14-, M ual-VA 1.-- f+tr1 Lt -T '-GZf s en-. , ...f,-)O,..,,,I., Licv ,.A C.iry —, 5,14 1D! ty'i,r...( *---_---,_ _ _ _z.24_,., I crrti — Cle5SrarAL-- — —.7.- , (1) Rounding: R=rounded, r=subrounded, a=subangular, A=angular (2) Grading: P=poorly graded, M=moderately graded, W=well graded, X=see description Martin Marietta Site Name: v_ G'fir Site Location: L`}C ( & , , Co Boring Number: 2 Latitude: Date Started: -24.11 Rig Type: i Drilling Method: !� Surface Elevation (Feet): 4'7 2 $ Depth to Bedrock (Feet): 2 Backfill Type: Depth (Feet) Z- - io 'a !L iy 2P 2A Logged By: al., � %3 �eGei- Longitude: 196 'f • Fri--/ S ( Z Date Completed: (a1, /2c l Drilling Contractor: II , ni Z.ns l H e on' Borehole Diameter: L/ - ih I. 1, Depth to Water (Feet): Boring Total Depth (Feet): Z,'L Geologic Log Sample interval USC Designation Rounding (1) Grading (2) Time, Material Description, and Comments Top of Groundwater' %tsp 7. 3c.,-i 4..,-P- G.-- 1,,e,4--, / n O/ ( 4 /)?a'51' arm..,...( ws . (1) Rounding: R=rounded, r=subrounded, a=subangular, A=angular (2) Grading: P=poorly graded, M=moderately graded, W=well graded, X=see description Site Name: Site Location: Martin Marietta cn 4 - -kr� C--NL,A ) Boring Number: 3 Latitude: v. y y 76 9 Date Started: t2j lit Zo f� Rig Type: C►M £ SS" Drilling Method: sal , ce cl 51,4- A 05 aT Surface Elevation (Feet): y 7 22 - Depth to Bedrock (Feet): ) 5 Backfill Type: C,A4 4 Logged By: Fb.v, cQ 1d «t-br. Longitude: lOy' SOO 5 � Date Completed: 1147.4 Drilling Contractor: ri H, N J k Borehole Diameter: L(— i o e1. Depth to Water (Feet): 5' Boring Total Depth (Feet): 151/. Depth (Feet) 0 y /0 — /1- • s -1U► 511E - Geologic Log Sample Interval USC Designation Rounding (1) Grading (2) Time, Material Description, and Comments Top of Groundwater c-1,7 - S, I-1- M ,>, ) Mp 4 -{- � f' J...- .'fur-ki i '�J, v�►.lt ,. s 14, 0, ST 4, 1,4- &p -r.,4,,-111 54,-1 'oil-L.'i F!- : ocQ 4-- br u wet #0 ,, Ir..., �.. -- 75-e44.4,4. G.r,i, (1) Rounding: R=rounded, r=subrounded, a=subangular, A=angular (2) Grading: P=poorly graded, M=moderately graded, W=well graded, X=see description Martin Marietta Site Name: Gr€, i kV/7--s Site Location: j sP Coy, , CQ Boring Number: 4/ Latitude: LID/ q -lq7 4 Date Started: /zti /7,1/ q Rig Type: (' M. S Drilling Method: So/,d f I /4-/L1 Surface Elevation (Feet): y'7 ?' — Depth to Bedrock (Feet): / y Backfill Type: £L , / r,,•� 5 Depth (Feet) 2 Logged By: .I�G`i.L, -3 Longitude: — /J fl $w2 '( / Date Completed: rzlrg (Zo)ct Drilling Contractor: Drill Borehole Diameter: Y, Depth to Water (Feet): ' 7 Boring Total Depth (Feet): /5 - Geologic Log Sample Interval USC Designation Rounding (1) Grading (2) Time, Material Description, and Comments ITop of Groundwater] r S' I +7 ci hz,si , GFh, S'ur _ 6,6 , "c." s I' AYri. ,-c 1 _ ,. it ',lei - 4;., S , i C 1,7 , % ir'- l — a -4,w ,^ i 1,.1-e( r3� 09 roc ca �' S,b�-�- -� �>- /2 (1) Rounding: R=rounded, r=subrounded, a=subangular, A=angular (2) Grading: P=poorly graded, M=moderately graded, W=well graded, X=see description f -Martin Marietta Site Name: 6rtaa, L ()Cc. ••• Site Location: 1,- 3 i & COO in, C C� Boring Number: 13 S Latitude: N p . '/ ,-/ 7 $ 2. Date Started: / 2.1 1,1 ,1 12o 1 6 Rig Type: r rti.I, Ss Drilling Method: ,S0r,,k FI Vii.' �-1,4 Surface Elevation (Feet): L/73,4 Depth to Bedrock (Feet): Backfill Type: C,,1f Depth (Feet) D i Y Ce 'a ly /G Logged By: T)a,, Longitude: — Jo 7. f Lis Date Completed: /2.//f 20 I9 Drilling Contractor: Dct £1,,, t_"n Borehole Diameter: '-/-e Depth to Water (Feet): .3 -- Boring Total Depth (Feet): /6 Geologic Log Sample Interval USC Designation Rounding (1) Grading (2) Time, Material Description, and Comments Top of Groundwater' 'h Cicy / k cry, , s4 3ry L)^ f 4(-4 0-11.t kior-Q ,6 , V 3 ca r4. r"`I Z(, ...., �.. (1) Rounding: R=rounded, r=subrounded, a=subangular, A=angular (2) Grading: P=poorly graded, M=moderately graded, W=well graded, X=see description Martin Marietta Site Name: Grt. '(- Site Location: 1"),1 Boring Number: %3 6 Latitude: '/D, L '(7' 1 "7 Date Started: z o _ 9 Rig Type: Cm;_ Drilling Method: So) ; -r"4 11- A, Surface Elevation (Feet): 4/ 7 2, '/ Depth to Bedrock (Feet): Backfill Type: Gatti.-), Depth (Feet) L Y f Logged By: Longitude: — /0 ' • $ '13,17 Date Completed: /2111 / lS Drilling Contractor: 1.-7 i) , � �,,, ,c �, H Borehole Diameter: '-/ - im v Depth to Water (Feet): 4/ Boring Total Depth (Feet): I S Geologic Log Sample Interval USC Designation Rounding (') Grading (21 Time, Material Description, and Comments r Top of Groundwater) l f.-, C 1 j r -1>,,,k 6x1, 0L a / 1 J. -J..,, M o, &b: Vir „ •.c,-. L,, 2., ‘0,..C. , "lo 1-.e +.s- , : ,,,, DO wawcr-& , io °G 40 /o % c�1, �,,... �'� i,A ...i L,e,; . _ � 7 (1) Rounding: R=rounded, r=subrounded, a=subangular, A=angular (2) Grading: P=poorly graded, M=moderately graded, W=well graded, X=see description Martin Marietta Site Name: �re�. �GS er Site Location: L 1e` c a - ' } Cc -1 Boring Number: j Latitude: t.{n w L/ So Date Started: 12- 1.1 �2011 Rig Type: Gvrt Fz AS 4._�� Drilling Method: Sp [, ter Surface Elevation (Feet): -7 3O Depth to Bedrock (Feet): I'7'fZ Backfill Type: re f il'� r Depth (Feet) /d Logged By: Da 5. iva,e_bfr Longitude: - 1O • 81-/R61 Date Completed: J21� Si 24119 Drilling Contractor:'Dr)? F to ye r.S Borehole Diameter: ( - n ( Depth to Water (Feet): '-I Boring Total Depth (Feet): I Geologic Log Sample Interval USC Designation Rounding I'; Grading (2) Time, Material Description, and Comments Top of Groundwater' 5,14) C ki 1 bAr-4 .,"4.7 r s t-,6rZ,, ,,, I 5,1- 5. --c i w► o0Q ru.4— 1. Dori 8rz ,,,,,,., A ..... t.}P - 4x,4- 1 o°; -A —c 3r (1) Rounding: R=rounded, r=subrounded, a=subangular, A=angular (2) Grading: P=poorly graded, M=moderately graded, W=well graded, X=see description Site Name: Site Location: Boring Number: Latitude: Date Started: Rig Type: C tvt 5 Drilling Method: 5,4 ;a- n,51-,1_ A ij or- Borehole Diameter: — Surface Elevation (Feet): y 7 2 g Depth to Water (Feet): Depth to Bedrock (Feet): j`J Boring Total Depth (Feet): /5 Backfill Type: C Martin Marietta Page / of Grea Lis -der„ . co 4c9 , (s44 Logged By: l ,e. c 3. a Longitude: Date Completed: Drilling Contractor: , Depth (Feet) O 99 2- /0 I2. -, /N !S 7D -- Geologic Log Sample Interval USC Designation Rounding t°ti Grading (21 Time, Material Description, and Comments Top of Groundwatel ; I+, C-44-7 I Aucil 40 DA, k F6 cc w. �/la7�1 Wchht lMn.bL f Jr'i 4 1 , 41) 1 r a.k ( c.), o7 ., t .. �. 13rs,cam_ (1) Rounding: R=rounded, r=subrounded, a=subangular, A=angular (2) Grading: P=poorly graded, M=moderately graded, W=well graded, X=see description Martin Marietta Site Name: Site Location: Boring Number: Latitude: reef (Nec I 'i.i vi/rd (ow Y) (0 q Date Started: Job -'y -2411 Rig Type: CM Q S S Drilling Method: SOW n,‘,41 Surface Elevation (Feet): 47 51, Depth to Bedrock (Feet): (if Backfill Type: (K r,,s Depth (Feet) 2 y I0 Logged By: ail (0,10eY Longitude: /Ozt-19 g3i 2 - Date Completed: /2-/9- 11� Drilling Contractor: Di,"t1,i &.,, Borehole Diameter: Depth to Water (Feet): Boring Total Depth (Feet): Geologic Log Sample Interval USC Designation Rounding ") Grading (2) Time, Material Description, and Comments Top of Groundwater' f' ' K Vail -Top$d' ( rig f 9,1 ) (l/vv-,ii 1 ya,, I I Y .4.',1'i, ed, /L c. s r ,.. f WP* 1 v 4 4 -rte g q-1, Cr 5M; (1) Rounding: R=rounded, r=subrounded, a=subangular, A=angular (2) Grading: P=poorly graded, M=moderately graded, W=we11 graded, X=see description Site Name: 6(cit- (eilr,vi Site Location: liveM Boring Number: (310 Latitude: 40-1 Ltrt Date Started: ..12:/7-1c, Rig Type: ( PE Drilling Method: ≤a1; cl Fi, 4• I9udj'ef Surface Elevation (Feet): 'i 7 3 O Depth to Bedrock (Feet): 1.5 Martin Marietta Page 1 of Backfill Type: Depth (Feet) 0 2 Logged By: i ; f Lot•f-^d Longitude: - 1M -15055'2 - Date Completed: O -1 q-/ Drilling Contractor: DOire19 er $ Borehole Diameter: 1.7 Depth to Water (Feet): 1j Boring Total Depth (Feet): )5.5 Geologic Log Sample Interval USC Designation Rounding (1) Grading (21 Time, Material Description, and Comments Top of Groundwatel 5?i., ao, drie Wwwrii r" ro,S t o w€' 7 V i",,,,arfi9 44,ji.....vol - 15/1,i -tack, t k 9.10/ t/a y y ,,, (1) Rounding: R=rounded, r=subrounded, a=subangular, A=angular (2) Grading: P=poorly graded, M=moderately graded, W=well graded, X=see description Martin Marietta Site Name: Site Location: Boring Number: Latitude: Date Started: L 1 1-7O /07 Rig Type: C. -Ai tc 55" Drilling Method: Scd, Surface Elevation (Feet): Li -7 2- -7 Depth to Bedrock (Feet): `6, Backfill Type: �'t,�{i-•S, Grt4 4,e_Sa- 1,t C g 1 7 L-i 5 3 -2 Depth (Feet) 2 1I 10 /2- 1 5 — Logged By:ci-- Longitude: -1 0 4/. gig -P-17 a Date Completed: ,25i. /. / '.' e ee r -t Drilling Contractor: ///72C) /f Borehole Diameter: Depth to Water (Feet): Li Boring Total Depth (Feet): / 7 7 Geologic Log Sample Interval USC Designation Rounding (') Grading (2) Time, Material Description, and Comments Top of Groundwater) % Ci, D -L r fi- p, L W' 1 tr' v r Si- 4.--)e.1— � ,,,16 5---( ,,,-1( . r(.L rt , .-•- ass,,, rtc. t- c le 5 .-a _.+D., A 5.__,V6.- ,, A (1) Rounding: R=rounded, r=subrounded, a=subangular, A=angular (2) Grading: P=poorly graded, M=moderately graded, W=well graded, X=see description artin Marietta Site Name: cre.4 L r Site Location: ( k , C Boring Number: ¶3 1 ct- Latitude: `-/n . '(y 8 Date Started: Rig Type: (" YY1 SS Drilling Method: F 15 LL �� er Surface Elevation (Feet): '17 3 Depth to Bedrock (Feet): Backfill Type: Depth (Feet) O — Z It 12, /1 /b '3Yc l is/7 Logged By: Da u.,,{ 3,_fae!-' Longitude: —1O.1i. SO 3 O Date Completed: 121/S/2gLy Drilling Contractor: �r,l�, IZnLn •et--% Borehole Diameter: `/ -' , .,, c-1, Depth to Water (Feet): �p Boring Total Depth (Feet): /9 Geologic Log Sample Interval USC Designation Rounding (1) Grading (2) Time, Material Description, and Comments Top of Groundwater] 5, II -7t cla , `PA,* sexy i3l. b �w,, Ay' k",- !t ,., r -v -so, s (- + t 9 Si Si I 5. ,,),4L Grt4 ( i wico ejs,4 4, 1t. L rni,,,,,, , ,,x._ - comer s.—, , ..-3 o ,,,,,., c,r) , o — I o %v GrA .,...--t .3^�,.- ��ort,k, �. L- a,.,, L 44,, et, m k t r, C ('1) (1) Rounding: R=rounded, r=subrounded, a=subangular, A=angular (2) Grading: P=poorly graded, M=moderately graded, W=well graded, X=see description Martin Marietta Site Name: Site Location: PVC oQ Co JA ti Boring Number: 32.O Latitude: o L y 4 447 Date Started: j 21 / %o f 9 Rig Type: Ct2 S s Drilling Method: /4 R . P .A ••14/ - Surface Elevation (Feet): '47 2.1 Depth to Bedrock (Feet): / -I Backfill Type: Cu 4, Depth (Feet) 2- 2 qz. - LI /. 1� <1) — /N co Logged By: v , 6,e 64, -- Longitude: - I o • S YS -7 Date Completed: / J I y ( Zee 11 Drilling Contractor: `Dr) (i , � £i ,,, - Borehole Diameter: 4'_ / ., c Depth to Water (Feet): Y Boring Total Depth (Feet): 1 1 Geologic Log Sample Interval USC Designation Rounding (11 Grading (21 Time, Material Description, and Comments ITop of Groundwater' ....5114-, C/G) , Dcrk j(2,y'St, 3Pvw, Alp, SL. e -e),.., , ; %gyp , s4.- we� D© 2I (r5nui1 (1) Rounding: R=rounded, r=subrounded, a=subangular, A=angular (2) Grading: P=poorly graded, M=moderately graded, W=well graded, X=see description Site Name: G rz+ Ulos 11'41 Site Location: Boring Number: f3 z Latitude: Date Started: l? -x) - Rig Type: 01E t S S Drilling Method: 5, ,ea !` ij 140,11r Surface Elevation (Feet): `I'( 3'-t Depth to Bedrock (Feet): / $' Backfill Type: C S Martin Marietta Page I of Depth (Feet) a- 2 b Logged By: O) ,u'4t '?" Longitude: • l0y- g`1°1�53 Date Completed: I —0. /1 Drilling Contractor: 2:71, her✓s Borehole Diameter: `t —its h Depth to Water (Feet): Boring Total Depth (Feet): / .5 0 J 'o 0 d t, Sample Interval USC Designation Rounding (1) Grading (21 Time, Material Description, and Comments Top of Groundwatel Lb, k Thrown 5 lfy, coy, r o, se" 3i'n ' , Pi, - y,-sr�,�c id y C''''')/"" of y 'u% 9r1v.4f Cdsirsat,y _ D 5 "l,tr, 50-9'r 9r 0, r,,, t- (^- 2 5`d'y , ) 1 / ,007,,e /t — 71, r k 9 rcY_ c4-51C/v,—g— -- — (1) Rounding: R=rounded, r=subrounded, a=subangular, A=angular (2) Grading: P=poorly graded, M=moderately graded, W=well graded, X=see description Site Name: ae I We Site Location: Boring Number: fl 2 2 - Latitude: ye 1L' i I —7 Date Started: 11 � , 19 /16714 Rig Type: (' -S*' Drilling Method: A0 / " j 4 /Iv Surface ElevatioFeet): y 7 Z 3 n ( Depth to Bedrock (Feet): 1 5 Backfill Type: G--' }} , __ Martin Marietta Lv c Ir� ��+ r• C Depth (Feet) 2 Logged By: tks , Longitude: —1O Y. gyy/ -' Date Completed: /21 i f f 2.sl r Drilling Contractor: 1),-, LI , 5 Borehole Diameter: 4' ' Depth to Water (Feet): x-/ Boring Total Depth (Feet): /6 Geologic Log Sample Interval USC Designation Rounding (1) Grading 121 Time, Material Description, and Comments Top of Groundwater kre 1— S< /c, yvi, N< k4 .6 6I4 , tn.e.d,,,,... {-„ ',P., ,-1... S3ca -' i,t4- t 30 % --r,,.,` 44 ~ d — 774,ic — Owe— L)..,-. ® r ,---r., ►-..-- - .--,-.5,-,4 (1) Rounding: R=rounded, r=subrounded, a=subangular, A=angular (2) Grading: P=poorly graded, M=moderately graded, W=well graded, X=see description Martin -Marietta Site Name: G f ce. I- T L)e k nSite Location: LJt la G? r1� t C•, Boring Number: 23 / Logged By: v , s , cf 1te-bzr Latitude: 401'11563 Longitude: — (O4 . ' j -75* Date Started: 12( I ti I2ot c Date Completed: Rig Type: Col .R.- Drilling Contractor: t 4 9ef Drilling Method: ifL Z t"'1, 4 ' 4- A- j5/ Borehole Diameter: If — j n c Surface Elevation (Feet): 4'7 a I Depth to Water (Feet): f Depth to Bedrock (Feet): ( S Boring Total Depth (Feet): 1.S �/, Backfill Type: Cc..t c ' s Depth (Feet) C2 y /a Geologic Log Sample Interval USC Designation Rounding (1) Grading 12) Time, Material Description, and Comments ITop of Groundwater' 6.14-7C1,7 , &c-4 y.A ls1- br'W.-. ,/V►v.s W 6(-1..e..1 I, Sots 14 a �2ra t, rd L)'°° iw )R T 1 O �/0 i r4,4 (1) Rounding: R=rounded, r=subrounded, a=subangular, A=angular (2) Grading: P=poorly graded, M=moderately graded, W=we11 graded, X=see description ATTACHMENT C: FIGURE A - LOCATION OF SLOPE STABILITY CROSS SECTIONS FIGURES 1 THROUGH 12 - SLOPE STABILITY ANALYSIS RESULTS 8/31/2022 12:07:48 PM - C:\USERS\LAURA.WEATHERL\ACCDOCS\TETRA TECH INC\117-8741006 WINDSOREASTMINE\PROJECT FILES\CAD\SHEETFILES\C-00 SLOPE STABILITY SECTION LOCATIONS.DWG - WEATHERL, LAURA MARTIN MARIETTA MATERIALS PROJ: 117-8741006 MINING CELL D (GWIP 8B) ROW CLOSED TO PUBLIC ACCESS - h TETRA TECH www.tetratech.com L 351 Coffman Street. Suite 200 Longmont. CO 80501 Phone: (303) 772-5282 STOCKPILE MINING CELL B (GWIP 8A-2 & 8C-2) MINING CELL C (GWIP 8A-1) LEGEND 250' 500' SCALE: 1" = 500' FUTURE ROW FOR CROSSROADS BLVD PARSONS MINE EXCAVATION MINING CELL A (GWIP 8C-1) MINE PERMIT BOUNDARY AND LIMIT OF DISTURBANCE AREA TOP OF RIVERBANK EDGE LIMIT OF MINE EXCAVATION PER SLOPE STABILITY ANALYSIS RECLAMATION BOUNDARY PERMIT AND AFFECTED AREA BOUNDARY SLOPE STABILITY SECTIONS EAST WINDSOR PERMITTING WELD COUNTY, COLORADO SLOPE STABILITY ANALYSIS SECTION LOCATION PLAN DATE: August 31. 2022 DESN: PFH Figure A J Bar Measures 1 inch Material Name Color Unit (Ibs/ft3) Weight g I Sat. Weight ft3) Unit (lbs/ . Strength Type ' Cohesion (psf) (deg) Phi UCS (psf) GSI mi D I Overburden 110 126 Coulomb Mohr - 200 23 Mohr - Native Sand 120 125 Coulomb 0 30 Claystone 140 Generalized Hoek -Brown 700000 50 4 0.7 Compacted 112 125 Mohr- 100 28 1 .8 - Overburden Coulomb O CO O N f) xq -T --f - - ..- _ -T -f T '-- T I i T I 7 I T T -40 -20 I I i T"- i I t r , I r T i i -r--r- r f -T -7--�r 0 20 40 60 80 100 120 Project Windsor East Mine TETRA TECH Analysis Description Slope - Section 1 - Static (Thl Drawn By MA Scale 1:200Reclaimed Company Tt SLIDEINTERPRET 9.016 Date 7/15/2022, 11:16:35 . AM File Name Section 1.slmd FIGURE 1a - Material Unit Sat. Unit Strength Cohesion Phi UCS Name Color (lbs/ft3) Weight (lbs/ft3) Weight Type (psf) (deg) (psf), GSI mi D ► 0.08 itiim , - Overburden 110 126 Coulomb Mohr- 200 23 o 0O _ - Native Sand 120 125 Coulomb Mohr - 0 30 Claystone 140 Generalized 700000 50 4 0.7 Hoek -Brown 1.4 _ Compacted Overburden 112 125 Coulomb Mohr - 100 28 o CO o 1 - 10 -� -. :! -- = ._ r. _ �. . - .. -_ ... �. a, ir _ _ ______:„....,....,_ .. - - -- _ -40 I 1 , ! I , i r ! I 1 1 1 i I I I I T T f 1 1 i I I i I 1 I i i i 1 i 7 1 ( r - 1 i I 1 T I T I I 1 1 I--- I i I I T T 1 I T 7 i 1 1 I 1 1 1 -20 0 20 40 60 80 100 120 Project Windsor East Mine Analysis Description 'It TETRA TECH Reclaimed Slope - Section 1 - Seismic s J Drawn By MA Scale 1:200 Company Tt SLIDEINTERPRET 9.016 Date 7/15/2022, 11:16:35 AM File Name Section 1.slmd FIGUF _ 1.7 _ Name Color Weight Unit (lbs/ ft3) Wen' Sat. UMaterial ht t (Ibsg / ft3) Strength Type Cohesion (psf) Phi (deg) (psf) UCS GSI mi D o Overburden 110 126 Mohr - 200 23 in Coulomb - Native Sand L 120 125 Mohr - Coulomb 0 30 Claystone 140 Generalized Hoek -Brown 700000 50 4 0.7 Compacted Overburden 112 125 Mohr- Coulomb 100 28 _ - Stockpile 110 125 No strength O O r in w O ---- -r- -r -T I TiT--T i f T T T I r , T 1 1 1 r y r T- 1 T- T I I 1 T T r I r r r I I r T T r -125 -100 -75 -50 -25 1 i r III r i , I ITT I I r r T i IT IIIIET I I i Ti I' 0 25 50 75 100 125 150 175 Project Windsor East Mine Analysis Description Reclaimed Slope - Stockpile - Section 1 - Static TETRA TECH (mit) Drawn By MA male 1:380 Company Tt SLIDEINTERPRET 9,016 Date 7/15/2022, 11:16:35 AM File Name Section 1_Stockpile.slmd FIGURE lc to N 0 LO Material Name Color Unit Weight (Ibs/ft3) Sat. Unit Weight ft3) (lbs/ Strength Type Cohesion (psf) (deg) Phi UCS GSI mi D (psf) Overburden 110 126 Mohr Coulomb 200 23 Native Sand 120 125 Mohr- Coulomb 0 30 1 Claystone 140 Generalized Hoek -Brown 700000 50 4 0.7 Compacted Overburden 112 125 Mohr Coulomb - 100 28 ~�— Stockpile 110 125 No strength -80 1.3 -60 -40 -20 20 40 60 80 100 120 missirosarsecO it; 0.08 r TETRA TECH SLIDEINTERPRET 9.016 Project Windsor East Mine Analysis Description Reclaimed Slope - Stockpile - Section 1 - Seismic Drawn By MA Scale 1:300 Company Tt Date 7/15/2022, 11:16:35 AM File Name Section 1_Stockpile.slmd FIGUF Safety Factor - 0.00 Unit Sat. Unit t - 0 25 . Material Weight Strength Cohesion Phi UCS 1 N rs 0 Name Color (lbs/ Weight Type GSI mi D 1 5 .50 (psf) (deg) (psf) 0 75 ft3) (Ibs/ft3) . 1. 0 0 Mohr - Overburden 110 126 Coulomb 200 23 1 25 . 1 50 Mohr- . Native Sand 1 120 125 Coulomb 0 30 1 75 . - o 2.00 Claystone 140 Generalized 700000 50 4 0.7 o 4 Hoek -Brown r- - i 2.25 2.50 2.75 3.00 3.25 _ 3.50 3.75 4.00 4.25 4.50 4.75 5.00 5.25 7.. -_ ..� 5.50 5.75 6.00+ I< - 37 H CV , -120 -100 -80 -60 -40 -20 0 20 40 60 80 100 120 Project Windsor East Mine ITTETRA TECH Analysis Description Mine Slope - Section 1 - Static Drawn By MA Scale 1:300 Company Tt SLIDEINTERPRET 9.016 Date 7/15/2022, 11:16:35 AM File Name Section 1 (mine slope).slmd FIGURE le 0 Safety Factor 0.00 0.25 0.50 0.75 1.00 1.25 1.50 1.75 2.00 2.25 2.50 2.75 3.00 3.25 3.50 3.75 4.00 4.25 4.50 4.75 5.00 5.25 5.50 5.75 6.00+ -125 W Material Name Color Weight Unit (lbs/ ft3) Sat. Unit Weight (lbs/ft3) Strength Type Cohesion (psf) (deg) Phi UCS (psf) GSI mi D Overburden 110 126 Mohr Coulomb 200 23 Native Sand 120 125 Mohr - Coulomb 0 30 J Claystone 140 Generalized Hoek -Brown 700000 50 4 0.7 -100 r -- 1 I I -75 -50 -25 r" --r "1"- r -r r 25 r T 1 7 T j 1 i 1 I I I 50 1 1 j 75 1 W It; 0.08 100 I III TETRA TECH SLIDEINTERPRET 9.016 Project Windsor East Mine Analysis Description Mine Slope - Section 1 - Seismic Drawn By MA Scale 1:300 Company Tt Date 7/15/2022, 11:16:35 AM File Name Section 1 (mine slope).slmd FIGUF O Material Unit Sat. Unit Cohesion Phi UCS Name Color Weight ft3) (Ibs/ Weight ft3) (Ibs/ Strength Type (psf) (deg) (psf) GSI mi D - Overburden 110 126 Mohr Coulomb 200 23 Native Sand ( [ 120 125 Mohr - Coulomb 0 30 Claystone r 1 140 Generalized 700000 50 4 0.7 Hoek -Brown 1.7 Compacted 110 125 Mohr- 100 28 Overburden Coulomb O 8 O 11 • \AI ' lir ... -- . W o- - _ --I - -- _T —_I -1 -1 -T - - -F- - ---T- - I 1 I J 1 T 1 I-- 1 I [ I I r 1 0 20 I 1 I I I I T F 1 I I r I i 1 1- 1 T r- r r r I r r I I 1 1 I -r 1- I J 1- I 1-- r I I 40 60 80 100 120 140 Project Windsor East Mine IlkTETRA Analysis Description TECH Reclaimed Slope - Section 2 - Static - J Drawn By M A Scale 1:180 Company Tt Date File Name SLIDEINTERPRET 9.016 7� 15�2022� 1 1:16:35 AM Section 2. slmd FIGURE 2a 0 co - - - Material Name Color Unit Weight (lbs/ft3) (Ibs/ft3) Sat. Unit Weight Strength Type Cohesion (psf) Phi (deg) UCS (psfl GSI mi D I ► 0.08 Overburden 110 126 Mohr- Coulomb 200 23 - Native Sand 120 125 Mohr- Coulomb 0 30 Claystone 140 Generalized Hoek 700000 50 4 0.7 1.3 o -Brown co - - Compacted Overburden 110 125 Mohr - Coulomb 100 28 0 Tr _ 9 o \A/ NI • V _ W • 0 _ • • • I i I I I . r I . I I _ I T- T IT t I 1 I I I I 0 20 40 I I I I I 1 1 I I I 60 I I I I I I Z I I I I I I 1 1 I I I I 80 100 I I 1 I I ` i IIIIIIIIIIIIIIII 120 140 Project Windsor East Mine Analysis Description Reclaimed Slope - Section 2 - Seismic TETRA TECH ("lb) Drawn By MA Scale 1:180 company Tt Date 7/15/2022, 11:16:35 AM File Name Section 2.slmd SLIDEINTERPRET 9.016 FIGUF 0 - CV - Material Name Color . (Ibs/ft3) Unit Weight Sat. Unit Weight (Ibs/ft3) Strength Type Cohesion (psf) (deg) Phi UCS (psf) GSI mi D I o Mohr r- Overburden 110 126 Coulomb 200 23 _ I . Native Sand [ 120 125 Mohr- Coulomb 0 30 _ I Claystone 140 Generalized Hoek Brown 700000 50 4 0.7 - - Compacted Overburden 110 125 Mohr - Coulomb 100 28 0 . - Stockpile 110 125 No strength .....- 1.7 cc 0 - W '%_ J -I -T -I -1- - -r _ I i I T T 1 I I I r I I r r I I T I I I I tT T -60 -40 I I I I I i 1 I I -20 III I I 1 TTT-T-T T- T 1 ��-1 i i--i1 r 1-1-1 - r I- I i- T-r-_i I 1. M F I T I T I -- 1 I r I --i T I I 111T i I i 0 20 40 60 80 100 120 1 4 Project Windsor East Mine lrit TETRA TECH Analysis Description Reclaimed Slope - Stockpile - Section 2 - Static L J Drawn By A.JH Scale 1:250 Company Tt SLIDEINTERPRET 9.016 Date 7/15/2022, 11:16:35 AM File Name Section 2 Stockpile.slmd - rl FIGURE 2c o - N - Material Name Color Weight (Ibs/ Unit ft3) (Ibs/ft3) Sat. Unit Weight Strength Type Cohesion (psf) (deg) Phi (psf) UCS GSI mi Dkitiism ► 0.08 Mohr - o Overburden 110 126 Coulomb 200 23 1.3 O - Native Sand 120 125 Mohr Coulomb 0 30 Claystone 140 Generalized Hoek -Brown 700000 50 4 0.7 Compacted Overburden 110 125 Mohr - Coulomb 100 28 Stockpile 110 125 No strength 1 O 0 _La_ _ - - _. - _ — - -_aa. - .. .. _. _. - • W • • • "�, W -1--T-1-1 "T - -T �} '� -f I I 711 T T T i Tf 1 r t I IT r i r T-1 �" i i r i I 1 r 1 i t- r f 7 I r i I I I I i -60 -40 -20 1 0 210 40 i 60 80 100 120 140 Project Windsor East Mine Analysis Description Reclaimed Slope - Stockpile - Section 2 - Seismic (Thl TETRA TECH Drawn By H Scale 1: 2 5 0 Company Tt Date File Name 7�15�2022� 11:16:35 AM Section 2_Stockpile.slmd SLIDEINTERPRET 9.016 FIGUF LO CV Safety 111 Factor 0.00 0.25 0.50 0.75 1.00 1.25 1.50 1.75 2.00 2.25 2.50 2.75 3.00 3.25 3.50 3.75 4.00 4.25 4.50 4.75 5.00 5.25 5.50 5.75 6.00+ Material Name Color (lbs/ft3) Unit Weight Sat. (lbs/ft3) Unit Weight Strength Type Cohesion (psf) (deg) Phi (psf) UCS GSI mi D Overburden 110 126 Mohr - Coulomb 200 23 Native Sand 120 125 Mohr - Coulomb 0 30 Claystone 140 Generalized Hoek -Brown 700000 50 4 0.7 \^J • -80 -60 -40 f _ 1 SLIDEINTERPRET 9.016 TETRA TECH -20 20 40 60 W 80 100 120 140 160 Project Windsor East Mine Analysis Description Drawn By MA Date 7/15/2022, 11:16:35 AM Mine Slope - Section 2 - Static Scale 1:300 Company Tt File Name Section 2(mine slope).slmd FIGURE 2e N o - ti O LO N Safety Factor 0.00 0.25 0.50 0.75 _ 1.00 1.25 _ 1.50 1.75 _ 2.00 2.25 _ 2.50 2.75 _ 3.00 3.25 _ 3.50 3.75 4.00 4.25 _ 4.50 4.75 5.00 5.25 5.50 5.75 6.00+ -rJ Material Name Color (Ibs/ft3) Unit Weight Sat. (lbs/ft3) Unit Weight Strength Type Cohesion (psf) (deg) Phi (psf) UCS GSI mi D Overburden 110 126 Mohr - Coulomb 200 23 Native Sand 120 125 Mohr Coulomb 0 30 , Claystone 140 Generalized Hoek -Brown 700000 50 4 0.7 W I I 1 -60 I I -40 I I I I i I r —I -20 20 46 wba.--"olli.‘s2mIllb. F I I I I 40 I III 1.3 W 60 80 100 1 120 It; 0.08 'II! 140 lilt —1-1- 160 111 TETRA TECH SLIDEINTERPRET 9.016 Project Windsor East Mine Analysis Description Mine Slope - Section 2 - Seismic Drawn By MA Scale 1:300 Company Tt Date 7/15/2022, 11:16:35 AM File Name Section 2(mine slope).slmd FIGUF Material Name Color (Ibs/ft3) Unit Weight _ Sat. (lbs/ft3) Unit Weight Strength yp Type Cohesion (psf) (deg) Phi UCS (psf) (p ) mi D Overburden 110 126 Mohr Coulomb - 200 23 1 Native Sand 120 125 Mohr- Coulomb 0 30 I 0 Claystone 140 Generalized 700000 50 4 0.7 Hoek -Brown Compacted 110 125 Mohr- 100 28 1' 8 - Overburden Coulomb 0 _ 7 � 1/V t. . 1 1 1 1 I 1 t 1 t 10 I 1 t t 1 I I 1 1 1 I 20 1 I I I I I I I 1 30 I 1 1 I 1 ' I I 1 1 40 I 50 60 70 80 90 100 I 110 120 Project Windsor East Mine ltTETRA TECH Analysis Description Reclaimed Slope - Section 3 - Static Drawn By MA Scale 1:150 Company Tt SLIDEINTERPRET 9.016 Date 7/15/2022, 11:16:35 AM File Name S03.slmd FIGURE 3a Material Name Color Weight Unit (lbs/ ft3) Sat. Unit Weight (lbs/ft3)0 Strength Type Cohesion (psf) Phi (deg) (psf) UCS GSI mi D ► 0.08 1 Overburden 110 126 Mohr- Coulomb 200 23 Native Sand 120 125 Mohr - 0 30 Coulomb 1.4 Generalized _ Claystone l 1 140 Hoek -Brown 700000 50 4 0.7 - - Compacted Overburden 110 125 Mohr- Coulomb 100 28 1 r - - / / N V1t _ . W . - Mb i I T r 1 1 1 I I T I r T i , T r 1 r 7 I- I I l I 1 'II I I I I I r r r j I r r r I I I I I ' I I I r I I I I I I i I I I I r r r r I I I I I I I I I I I I I I I I I I I r r I r I r I r r r r r I I I I I I r r I I I r I I I r r I I I 10 1 20 30 40 1 50 60 70 80 90 1 101 0 110 120 r r I I I 1--r-1 Project Windsor East Mine Analysis Description Reclaimed Slope - Section 3 - Seismic N1It TETRA TECH Drawn By M A Scale 1:150 Company Tt SLIDEINTERPRET 9.016 Date 7/15/2022, 11:16:35 AM File Name S03.slmd FIGUF Safety Factor 0.000 0.250 0.500 0.750 1.000 1.250 1.500 1.750 2.000 2.250 2.500 2.750 3.000 3.250 3.500 3.750 4.000 4.250 4.500. 4.750 5.000 5.250 5.500 5.750 6.000+ I i I I 1 I [ I Material Name Color (lbs/ft3) Unit Weight 4 Sat. Unit Weight (lbs/ ft3) Strength YP Type Cohesion (P s(deg) Phi UCS s (P fl GSI mi D Water Surface Hu Type YP Hu Overburden 110 126 MohrI Coulomb 200 23 Water Surface Custom 1 Native Sand 120 . 125 Mohr- Coulomb 0 30 Watr Surfae c Custom 1 Claystone 140 Generalized Hoek Brown 700000 . 50 4 0.7 Water Surface Custom 1 I I I- I--I..R.T:,_.IY,� .,- i ;- .a► "i ce -60 -40 -20 (it) SLIDEINTERPRET 9.016 TETRA TECH 1.5 IIITITIIII 20 40 60 ,. �T.<- .ice 1 �/ I 80 100 i 1 ' I 120 14 Project Windsor East Mine Analysis Description Drawn By MA Date 7/15/2022, 11:16:35 AM Mine Slope - Section 3 - Static Scale 1:250 Company Tt File Name Section 3(mine slope).slmd FIGURE 3c - Safety 0.000 Factor 0.250 Material - Unit Sat. Unit - Strength Cohesion Phi UCS - - - Water Hu Color Weight Weight GSI mi D Hu r- 500 Name Type yp s (p f) (deg) (psf) Surface Type 0.08 _ (Ibs/ft3) (Ibs/ft3) 1.3 0.750 - list; - &'�.�taJ*.,.t2, Overburden I 110 126 200 23 Water Custom 1 1.000 Coulomb ace 1.250 - 1 500 Native Sand C 120 125 Mohr- Coulomb 0 30 Water Surface Custom 1 . 1.750 Generalized Water o ' o Claystone 140 700000 50 4 0.7 Custom 1 Hoek -Brown Surface 2 000 2.250 _ 2.500 _ 2.750 — _ 3.000 3.250 _ � 3.500 3.750 - - . 4.000 4.250 - 4.500 _ 4.750 - 5.000 _ 5.250 co - 5.500 750 ,5 6.000+ - 0 36 >� . W , . . _ :,,:;t: .. . .. • -„,:„..., __ . . .. ._.. . • I-� I l I I II 1 I T ' I I 1 1 I 1 1 1 I T 1 1 1 1 I 1 I 1 I ' 1 I 1 1 -60 -40 -20 f I 1 T I f 1 I I I 1 1 7 T T T -T 1 T I I I 1 I T 1 1 1 0 20 40 60 IIIII I II 80 I T 1 1 t 101 0 120 140 I Project Windsor East Mine Analysis Description Mine Slope - Section 3 - Seismic lart) TETRA TECH Drawn By MA scat° 1:250 Company T t SLIDEINTERPRET 9.016 Date Filo Alc3177O 7/15/2022, 11:16:35 AM Section 3(mine slope).slmd FIGUF Material Name Color Unit Weight (lbs/ft3) Sat. (lbs/ft3) Unit Weight Strength Type Cohesion (psfl Phi (deg) UCS (psfl GSI mi D Overburden 110 126 Mohr - Coulomb 200 23 Native Sand ` 1 120 125 Mohr - Coulomb 0 30 Claystone 140 Generalized Hoek -Brown 700000 50 4 0.7 co Compacted Overburden 110 125 Mohr - Coulomb 100 28 2 • 0 -'e ai,,..,. Y- `1 •it-,, IiF. W ti NIA 10 20 30 40 50 60 70 80 90 100 111 0 120 130 Project Windsor East Mine TETRA TECH Analysis Description Slope - Section 4 - Static (1t1 Drawn By MA scale 1:150Reclaimed Company Tt SLIDEINTERPRET 9.016 Date 7/15/2022, 11:16:35 AM File Name Section 4.slmd FIGURE 4a - - Material Name Color Unit (Ibs/ft3) Weight Sat. Unit Weight (Ibs/ Strength Type Cohesion (psf) Phi (deg) UCS (psf) GSI mi D 0 08 Overburden 110 126 Mohr -Coulomb 200 23 _ 1 1 Native Sand 120 125 Mohr -Coulomb 0 30 - Claystone 140 Generalized Hoek -Brown 700000 SO 4 0.7 Compacted 110 125 Mohr -Coulomb 100 28 co Overburden - 1..5 ----)Dd 1 0 It— Thiammar.... -- ti. .. _ W • r ........ •.-.. '.�.... {-;;4.-I--- • --:..t �1 _t _ T- ._..__- 0 10 20 30 40 _. :_ -. T;. 50 1 T i 60 11 l- i•1..AT4t.r I T I�i T f i I -- i ( 1 1 cr f i 1 I i- 1 I T T I T i i 1 t -1 I 1 _-T 1 1 70 1 80 90 100 110 120 f 1 T--, 1 Project Windsor East Mine Analysis Description Reclaimed Slope - Section 4 - Seismic IIM TETRA TECH - J Drawn By M A Scale 1:15 0 Company Tt SLIDEINTERPRET 9.016 Date File Name 7/15/2022, 11:16:35 AM Section 4.slmd FIGU f 00 25 50 75 00 25 50 75 00 25 50 75 00 25 50 75 00 25 50 75 00 25 50 75 00+ -60 -40 Material Name Color Unit Weight (Ibs/ft3) Sat. Unit Weight (lbs/ft3) Strength Type Cohesion (psi) Phi (deg) UCS (psi) GSI mi D Overburden[---- 110 126 Mohr- Coulomb 200 23 Native Sand 120 125 Mohr- Coulomb 0 30 Claystone 140 Generalized Hoek -Brown 700000 50 4 0.7 C -20 0 20 40 1.5 O 1, I I I I I I I I I I I I I II I I I I I I I I I I I I I I I I I I I I I I I I 60 80 100 120 140 160 180 TETRA TECH SLIDEINTERPRET 9.016 Project Windsor East Mine Analysis Description Mine Slope - Section 4 - Static Drawn By MA Scale 1:300 Company Tt Date 7/15/2022, 11:16:35 AM File Name Section 4(mine slope).slmd FIGURE 4c SSafety Factor 0.00 1.3 Unit Sat. Unit 0.25 Material Color Weight Weight (lbs/ Strength Cohesion Phi UCS GSI mi D , 0.50 Name (lbs/ft3) ft3) Type (psf) (deg) (psf) 0.08 - 0.7 5 Mohr- - Overburden 110 126 Coulomb 200 23 to: 1.00 . - - 1 Mohr - - .25 Native Sand 120 125 Coulomb 0 30 � 1.50 N Generalized r 1 Claystone 140 700000 50 4 0.7 .75 Hoek -Brown - 2.00 2.25 - 2.50 2.75 - - 3.00 0- _ 3.25 3.50 3.75 4.00 - 4.25 4.50 - - 4.75 5.00 - 5.25 5.50 _ - 5.75 = 6.00+ 0 u7 uu7 'N 30- -O - o . -� 0- . - •- . 1 T 1 1 T I Z -T i I 1 1 1 I T 1 1 T' IIIIIIIII 1 1 I I TITF 1 I I T 1 1 -60 1 -40 -20 0 20 I T 1 1 I J I I I I I 40 1 I 1 I I I l 1 I 1 60 I I 1 I I IIIIIIIII 1 80 I I 1 7 1 I 100 I I I I J I I I 1 I I 1 I T j T 1 1 1 120 140 1 I I I I I I I 1 1 160 1 I I 1 I I I 1 I I 7 180 1- I l Pioject Windsor East Mine Analysis Description Mine Slope - Section 4 - Seismic Ilt) TETRA TECH Drawn By MA Scale 1:300 Company Tt SLIDEINTERPRET 9.016 Date File Name 7/15/2022, 11:16:35 AM Section 4(mine slope) .slmd FIGU F O aD Unit Weight Sat. Unit Cohesion Phi UCS _ Material Name Color (lbs/ft3) Weight (lbs/ft3) Strength Type (psf) (deg) (psf) GSI mi D Overburden 110 126 Mohr -Coulomb 200 23 — Native Sand 120 125 Mohr -Coulomb 0 30 Claystone 140 Generalized Hoek -Brown 700000 50 4 0.7 Compacted Overburden 110 125 Mohr -Coulomb 100 28 2.0 5 .....,i F,_ O � CV -- , _ ;. w ~ 'l _ -i- "r'�'l`i'r - - T r T 1 ill i 1 1 r T I r T T T r 1 I T I T I I r T I T I 1 i r T i r r r r j r I r 1 I r 1 r r i 10 20 30 40 1 50 r r r r i r T 1 I r r T r I 60 70 80 90 100 110 120 Project Windsor East Mine Analysis Description Reclaimed Slope - Section 5 - Static lbTETRA %J TECH Drawn By M A Scale 1:150 Company Tt SLIDEINTERPRET 9.016 Date 7/15/2022, 11:16:35 AM File Name Section 5.slmd FIGURE 5a - Material Name Color Unit (Ibs/ft3) Weight Sat. Weight (Ibs/ft3) Unit Strength Type Cohesion (psf) Phi (deg) UCS (psf) GS! mi D ► 0 08 - Overburden 110 126 Mohr -Coulomb 200 23 Native Sand 120 125 Mohr -Coulomb 0 30 - Claystone 140 Generalized Hoek -Brown 700000 50 4 0.7 I Compacted Overburden 110 125 Mohr -Coulomb 100 28 1.6 O 9 CV . W - S , vv - ....- .. .. .. .� _ ... _. 0 10 20 30 40 50 60 70 i 80 fi �- , l ( � P 1 90 l�"r i-i�r-i � __ '� 100 i r , f 1 r , 1 J rte- , ' I I , " J -T , r r j r , , 110 120 Project Windsor East Mine Analysis Description Reclaimed Slope Section 5 - Seismic (ThlTETRA TECH Drawn By MA Scale 1:150 Company Tt SLIDE INTERPRET 9.016 Date 7/15/2022, 11:16:35 AM File Name Section 5.slmd FIGUF o- Safety Factor - - - 0.00 Unit Sat. Unit r 0.25 Material Color Weight Weight Strength Cohesion Phi UCS GSI mi D 0.50 Name (Ibs/ft3) (Ibs/ft3) Type (psf) de (deg) ( psf ) 0.75 Mohr- - Overburden 110 126 Coulomb 200 23 - 1.00 1 Mohr- .25 Native Sand 120 125 Coulomb 0 30 - 1 50 L.O . Ni Generalized _ 1 . 75 Claystone 140 Hoek -Brown 700000 50 4 0.7 - 2.00 2.25 _ - 2.50 2.75 1.5 3.00 - 3.25 O- O r 3.50 - 3.75 4.00 - 4.25 4.50 - 4.75 5.00 �,- 5.25 - 5.50 5.75 6.00+ O U) - 25 +� N _ p w w 4 if r I r i I r el I t I t 1 I I I 1 I I t t I I I I r l t I I T- I tTT- IIIIIIIT- r- 1 1 1 ► -60 -40 -20 0 20 40 I r r I I I I I I-► I r r r r I I I 1 I I I I I I r IIIIIII r ' r r r 1 ilia r ilia r 60 80 100 120 140 I 1 r a r r i T a r I r r 7—T1 I I I I 160 180 I I r I -1 I r Project Windsor East Mine Analysis Description Slope - Section 5 - Static (Thl TETRA TECH Drawn By MA Scale 1: 3 00Mine Company Tt SLIDEINTERPRET 9.016 n` to 7/15/2022, 11:16:35 AM Mc Name Section 5(mine slope) .slmd FIGURE 5c o- Safety Factor to r 0.00 Unit Sat. Unit 0.25 Material Color Weight Weight Strength Cohesion Phi UCS GSI in,0 1.3 Name Type (psf) (deg) (psf) 0.50 (lbs/ft3) (lbs/ft3) - 0.08 _ ithisawra 0.75 Overburden [ 110 126 Mohr 200 23 Coulomb kyvs: 1.00 1 Native Sand [ 120 125 Mohr - 0 30 - .25 Coulomb - 1 50 N . Generalized Claystone 140 700000 50 4 0.7 r- 1 75 - . Hoek Brown o o' -3 D O LO O LI - O N Ln N V . V V T O to 29 ,I N _ - P ., r 1: _ o 4W Io- I ► ' ► 7 ► 1 II1 ► ► ► ►I ► ► 1111J11 IIIIIIIIII -60 -40 -20 111111111 0 20 40 1 1 60 ► I I I I 1 I- ► 80 ► ► ► I ► ► I I I I I ► ► I I I I I I ► ► 1 ► I ► ► ► 100 120 140 160 1 I I ► -► ► I I 180 Project Windsor East Mine riliblia% TETRA TECH Analysis Description Slope - Section 5 - Seismic I Drawn By MA Scale 1: 3 0 0Mine Company T t SLIDEINTERPRET 9.016 _ Date 11:16:35 AM File File Name Section 5(mine slope).slmd FIGUR. _ _ Material Name Color Unit Weight (Ibs/ft3) Sat. Weight (lbs/ft3) Unit Strength Type Cohesion (psf) Phi (deg) (psf) UCS GSI mi D - Overburden 110 126 Mohr - Coulomb 200 23 _ - - Native Sand 120 125 Mohr - Coulomb 0 30 Generalized o Claystone 140 Hoek -Brown 700000 50 4 0.7 1 8 cfl . _ Compacted Overburden 110 125 Mohr - Coulomb 100 28 Silty Sand 120 125 Coulomb W r O- I I I I , 1 I I I Ij i I I I I I i I I I „1,,i I I 1 I 10 20 30 I I i 1 , T I I 1 I 1 f I 1 , I I i I I I I 1 I I I I I I I I I I I I I I I I I I 1 I I I I I I I I i 1 1 I 1 I 1 f TI 1 I I 1 -1 T I I I T T I T I I I F 1 I I I T i I T I I [ I I I I I 1 T V � I 40 50 60 70 80 90 100 110 120 Project Windsor East Mine Analysis Description TETRA TECH Slope - Section 6 - Static (It) Drawn By MA Scale 1:150Reclaimed Company Tt sLIDEINTERPRET 9.016 Date -7 / � 15�2022� 1 1:16:35 AM Section 6. simd File Name FIGURE 6a - Material Unit Sat. Unit Strength Cohesion Phi UCS _ Name , Color 4 Weight (Ibs/ft3) Weight ft3) (lbs/ Type i (psf) (deg) (psf) GSI mi D kfrim: 0.08 - Overburden 110 126 Mohr Coulomb 200 23 - Native Sand 120 125 Mohr - Coulomb 0 30 - Claystone 140 Generalized Hoek -Brown 700000 50 4 0.7 1 4 ' co , Compacted Overburden 110 125 Mohr - Coulomb 100 28 - Silty Sand 120 125 Mohr- Coulomb 0 28 O • ,� W • I I 1 1 1 I 1 I I 1 0 10 I I 1 I I 1 1 1 1 t I T I I I j 1 I I r 7 7 r ' I I r T I I I I 1 1 r -1 I I I I I I I 1 I r I I r I I I F -1 I I I I I I I I I I I" " "I"" I 1 I I I I I I I I l 1 I I I I I I" I I I" " I I I E r I I r t I i 20 30 1 40 50 60 70 80 90 100 110 120 Project Windsor East Mine Analysis Description section 6 - Seismic LimiLik: TETRA TECH Drawn By MA Scale 1, 15 O Company Tt SLIDEINTERPRET9.016 Date 7/15/2022, 11:16:35 AM FileName Section 6.slmd FIGUR 0 0 Safety Factor 0.00 0.25 0/50 0.75 1.00 1.25 1.50 1.75 2.00 2.25 2.50 2.75 3.00 3.25 3.50 3.75 4.00 4.25 4.50 4.75. 5.00 5.25 5.50 5.75 6.00+ sal rim Material Name Color (lbs/ft3) Unit Weight Sat. Weight ft3) Unit (lbs/ • Strength Type Cohesion (psf) Phi (deg) UCS (psf) GSI D mi Overburden 110 126 Mohr- Coulomb 200 23 , Native Sand 120 125 Mohr Coulomb - 0 30 Pi Claystone 140 Generalized Hoek -Brown 700000 50 4 0.7 p Silty Sand 120 125 Mohr- Coulomb 0 28 Am -60 -40 -20 20 40 60 1.5 80 100 120 TETRA TECH SLIDEINTERPRET 9.016 Pi eject Windsor East Mine Analysis Description Mine Slope - Section 6 - Static Drawn By MA Scale 1:250 Company Tt Date 7/15/2022, 11:16:35 AM File Name Section 6(mine slope).slmd FIGURE 6c Safety Factor 0.00 0.25 0.50 _ 0.75 1.00 1.25 _ 1.50 1.75 _ 2.00 2.25 2.50 2.75 3.00 3.25 _ 3.50 3.75 4.00 4.25 4.50 _ 4.75 5.00 5.25 5.50 5.75 6.00+ Material Name Color Unit Weight (lbs/ft3) Sat. Unit Weight (Ibs/ft3) Strength Type Cohesion (psf) Phi (deg) UCS (psf) GSI mi D Overburden 110 126 Mohr- Coulomb 200 23 Native Sand 120 125 Mohr - Coulomb 0 30 Claystone 140 I Generalized Hoek -Brown 700000 50 4 0.7 Silty Sand 120 125 Mohr - Coulomb 0 28 I ►:, w -60 -40 -20 1111 TETRA TECH SLIDEINTERPRET 9.016 Project Drawn By 46 20 40 7/15/2022, 11:16:35 AM Scale 1.3 60 Windsor East Mine 1 1 80 100 Mine Slope - Section 6 - Seismic Conipdiiy File Name T T I I T I 1 Section 6(mine slope).slmd 120 FIGURE T ► o 08 • - Material Name Color Unit Weight (lbs/ft3) Sat. Unit Weight (lbs/ ft3) Strength Type Cohesion (psfl (deg) Phi UCS (psf) GSI mi D - Overburden IS 110 126 Mohr -Coulomb 200 23 N r Native Sand 120 125 Mohr -Coulomb 0 30 Claystone 140 Generalized Hoek -Brown 700000 50 4 0.7 Compacted Overburden 110 125 Mohr -Coulomb 100 28 O O r 1 r` 2.0 O to Pipeline 6vv N J - --..A rw -r - -- 1 i 'r i f -1 -i - ' ( -120 -100 -80 r i I � �. �.. I � i j T I � 1, r r r r r T r 1" t 1 r TIT i r CC- r r r r 7- 1 r r r r r r r r -60 -40 -20 0 20 40 r r i T r ( i 1 I r r-" r r 1 r 1 r r t i-r r I 1 � � I 60 80 100 Project Windsor East Mine TETRA TECH Analysis Description Reclaimed Slope - Section 7 - Static (SW) (Thl Drawn By MA Scale 1:2 7 5 Company Tt SLIDE IN 1ERPRET 9.016 Date 7/15/2022 11:16:35 AM File Name Section 7.slmd FIGURE 7a Material Name Color Unit Weight (Ibs/ft3) Sat. Unit Weight (lbs/ ft3) j Strength Type Cohesion (psf} (deg) Phi UCS (psfl GSI mi D:tit; 0.08 in Nr Overburden 110 126 Mohr -Coulomb 200 23 Native Sand 120 125 r Mohr -Coulomb 0 30 _ Claystone 140 Generalized Hoek -Brown 700000 50 4 0.7 Compacted Overburden 110 125 Mohr -Coulomb 100 28 o 0 r 1 . 5 0 Pipeline 7 k- W -120 -100 -80 -60 -40 -20 0 20 40 60 80 100 Project Windsor East Mine Analysis Description Reclaimed Slope - Section 7 - Seismic (SW) TETR A TECH (Thl Drawn By MA Scale 1:275 Company Tt SLIDEINTERPRET9.016 Date 7/15/2022, 11:16:35 AM File Name Section 7.slmd • • FIGUR� tO tO N 0 Safety Factor 0.00 0.25 0.50 0.75 1.00 1.25 1.50 1.75 2.00 2.25 2.50 2.75 3.00 3.25 3.50 3.75 4.00 4.25 4.50 4.75 5.00 5.25 5.50 5.75 6.00+ Searsaisse I I I 1 I I I I I III Material Name Color Unit Weight (Ibs/ft3) IOverburden Sat. (lbs/ft3) Unit Weight Strength g Type Cohesion (psf) (deg) Phi UCS (psf) GSI mi D 110 126 Mohr- Coulomb 200 23 Native Sand 120 125 Mohr Coulomb - 0 30 Claystone 140 Generalized Hoek -Brown 700000 50 4 0.7 -120 -100 -80 -60 -40 -20 Pipeline 20 40 I, 60 80 111 TETRA TECH SLIDEINTERPRET 9.016 Project Windsor East Mine eniMPASSOP Analysis Description Mine Slope - Section 7 - Static (SW) Drawn By MA Scale 1:300 Company Tt Date 7/15/2022, 11:16:35 AM File Name Section 7(mine slope).slmd sl and FIGURE 7c o Lo Safety Factor 0.00 r IIIIII- 0.25 0.50 1 0.08 -� 0.75 1.00 1.25 1.50 L- N r 1.75 - 2.00 2.25 Unit 2 50 Material Weight Sat. Unit Strength Cohesion Phi UCS 2.75 . Name Color Weight Type GSI mi D 3.00 (Ibs/ (Ibs/ft3) (psf) (deg) (psf) sr ft3) ' o 3.25 Mohr 3 50 Overburden 110 126 - 200 23 . Coulomb 3.75 4 Mohr - 4 .00 Native Sand 120 125 Coulomb 0 30 .25 4.50 4.75 Claystone 140 Generalized 700000 50 4 0.7 Hoek -Brown - - 5.00 5.25 - r 5.50 1.3 5.75 6.00+ 0 Pipeline 34 U) N - C. a •. w .. .. .. ti .. - •- -..c...-- T - r_•T . .�.� 1 I�-T-i r t T -120 f t r- �` -100 -80 1._-..r_1 �_T-_..T_ r -60 -40 -20 0 20 40 60 80 100 Project Windsor East Mine (ThlTETRA TECH Analysis Description Mine Slope - Section 7 - Seismic (SW) Drawn By MA scale 1:300 Company Tt SLIDEINTERPRET 9.016 Date 7/15/2022, 11:16:35 AM File Name Section 7(mine slope).slmd slmd FIGURI - Material Name Color Unit Weight (lbs/ft3) Sat. Unit Wet ft3) lbs/ Strength Type Cohesion (psf) Phi (deg) (psf) UCS GSI mi D N r Overburden 110 126 Mohr -Coulomb 200 23 Native Sand 120 125 Mohr -Coulomb 0 30 - Claystone 140 Generalized Hoek -Brown 700000 50 4 0.7 - - Compacted Overburden 110 125 Mohr -Coulomb 100 28 O O r` O 1.9 Pipeline 7 �c N • ?.. -yr Amplir • 1 T T -T T 1 1 1 1 T T T- T -T 1 I I 1 T I I 1 1 T--1- 1- I r U -120 -100 -80 T-1-1- I I I T- I I T I t T j T I T 1 7- 1 1. 1 I I 1 1-f- , 1 1 I r 1 r 1 r 1 1 I I I ' -60 1 -40 1 -20 0 20 I i ' r i I 1 II 40 ' I ' i I Tr -tT I ' 1 i f 1 ' ' I I 60 80 l I I I I I I l 7 7 100 Project Windsor East Mine (it) TETRA TECH Ana/ysis Description Reclaimed Slope - Section 7 - Static (NE) Drawn By MA Scale 1:275 Company Tt Date File Name SLIDEINTERPRET9.016 7/15/2022, 11:16:35 AM Section 7.slmd FIGURE 7e in N Material Name Color Unit Weight (Ibs/ft3) Sat. Unit Weight (lbs/ ft3) Strength Type Cohesion (pst7 Phi (deg) UCS (psfl GSI mi D lit; 0.08 - Overburden «...1 ' 110 126 Mohr Coulomb 200 23 _ Native Sand 120 125 Mohr -Coulomb 0 30 , ~ Claystone 140 Generalized Hoek -Brown 700000 50 4 0.7 _ Compacted Overburden I 110 125 Mohr -Coulomb 100 28 O O r LU O 1.5 LU - Pipeline 8 pr N - "SW • a W V .- ` _. ... __, -_ _. _. .. - -' - - _- - .71. -100 -80 -60 -40 -20 0 T---T--1--T TT r -T- T- j 1 1 T_' 20 40 60 80 100 Project Windsor East Mine TETRA TECH Analysis Description Reclaimed Slope - Section 7 - Seismic MD (NE) L J Drawn By M A Scale 1:275 Company Tt Date File Name SLIDEINTERPRET9.016 7/15/2022, 11:16:35 AM Section 7.slmd FIGURE o - in Safety Factor r_ 0.00 liiii 0.25 0.50 Unit Sat. Unit ___Im 0.75 Material Color Weight Weight Strength Cohesion Phi UCS GSI D _ 1 Name (lbs/ Type (psf) (deg) (psf) mi — .00 1.25 ft3) (Ibs/ft3) - r 1 50 Mohr - N . Overburden 110 126 200 23 _ 1 75 Coulomb . I 2.00 - 2 25 Native Sand 120 125 Mohr- 0 30 . Coulomb 2 50 . • Generalized 2.75 3 Claystone 140 Hoek -Brown 700000 50 4 0.7 1.5 .00 3.25 of 3.50 - 3.75 4.00 - 4.25 4.50 _ 4.75 5.00 �r 5.25 5.50 5.75 6.00+ 0 - Pipeline {24 , r W l Vy - ...� Y -i ._ 't -T -120 r' r 1 r- r T l I I i r 1 1 I 17 t r -100 -80 -60 -40 -20 1 I r "II"! i I I I T-- r r r f C V T I l r _T I TT -T `-T--"-r'-'1 I T T I 0 20 40 60 , r--1- r- i 1- -t I I l- r I- I I- I I I I r F r I i i l r T`T r"I-I- --T-F I J 80 100 120 Project Windsor East Mine Analysis Description Mine Slope - Section 7 - Static (NE) TETRA TECH (lb) Drawn By MA Scale 1:300 Company Tt SLIDEINTERPRET9.016 Date 7/15/2022, 11:16:35 AM File Name Section 7(mine slope).slmd FIGURE 7g o , Safety Factor �-^ 0.00 - Unit Sat. ► 0.08 J Material Weight Unit Strength Cohesion Phi UCSkilw )CL( —cc' Name Color (Ibs/ Weight Type (psf) GSI mi D = (Ibs/ (psf) (deg) ft3) ft3) �,- CV r 1 r Mohr - 2.00 Overburden 110 126 200 23 Coulomb 2.25 2 Native Sand I 120 125 Mohr - 0 30 .50 Coulomb - 2.75 1 1 1 - 3.00 Generalized - 3 Claystone 140 Hoek -Brown 700000 50 4 0.7 o .25 3.50 - 3.75 4.00 _ 4.25 4.50 - 4.75 5.00 Will"`�- 5.25 5.50 5.75 1.3 - 6.00+ 0 LU Pipeline 30 N - y - W r . • -T P1 -T 1 t 7 f r 1 I II I Ti 1 J 1i T I E i T 1 T f I T 1 I C;-1 T 1 1 Z i T i T T I f i 1 r 1 T 7 1 f 1 i 1 i -120 -100 -80 -60 -40 -20 1 T T' 1 1 f I T T 1 T ii 1 1 T 1 j 1 1 1 TT 1 i t 1 1 1 I I 1 T 1 I I I 11 r T 1 r J I T I T I I i 1f T 0 20 40 60 80 100 120 Project Windsor East Mine Analysis Description Mine Slope - Section 7 - Seismic (NE) (Thl TETRA TECH l)iawn By MA Scale 1:300 Co✓npany Tt iSLIDEINTERPRET 9.016 Date 7/15/2022, 11:16:35 AM File Name Section 7(mine slope).slmd slmd FIGUR - _ Material Name Color Weight (lbs/ Unit ft3) Sat. (Ibs/ft3) Unit Weight Strength Type Cohesion (psf) Phi (deg) UCS (psf) GSI mi D Overburden 110 126 Mohr- Coulomb 200 23 Native Sand 120 125 Mohr Coulomb - 0 30 - o Claystone 140 Generalized 700000 50 4 0.7 Hoek -Brown Compacted 110 125 Mohr- 100 28 1 . 9 Overburden Coulomb o J / , 7 It— 0 N . V ' r -:. _ r f - y. - h 4 - ... " .tip ♦ 4r .. W ,. amPreasonwiri• ainliailarinnealMIS r r 11 r I II , I 0 10 r r r I I IIIIIIII r r i n 20 30 r I I I I 1 IIIIIIIIIIII I I I I I TI I I I I j 1 I r i 1 I Y t� I I I r" ` I --I I IIIIIII 40 50 60 1 70 80 I I I I I r" I T I i 1 r r r i r- I I I 1 -r r r 1 j t 1 T T I I I I I I 90 100 111 0 120 I I I I i TT Project Windsor East Mine (Th] TETRA TECH Analysis Description Slope - Section 8 - Static Drawn By MA Scale 1 : 15 0Reclaimed Company Tt SLIDEINTERPRET 9.016 Date 7/15/2022, 11:16:35 AM File Name Section 8.slmd FIGURE 8a Material Name Color Weight (Ibs/ Unit ft3) Sat. Unit Weight (Ibs/ft3) Strength Type Cohesion (psfl (deg) Phi UCS (psi GS; mi D ► 0.08 Overburden 110 126 Mohr Coulomb 200 23 I Native Sand 120 125 Mohr Coulomb -0 30 Claystone 140 Generalized Hoek -Brown 700000 50 4 0.7 1 . 5 Compacted Overburden . 110 125 Mohr Coulomb - 100 28 0 8 I.*- • =, t yam• ;.- ;._ .- - w t 1 T I T T I I 10 I 7 T II I T I I 1 I T I I T I I 1 1 T I I I 1 T I I 1 I T I T T T T I T 1 T- T I I I 1 T I 1 T T 1 I 1 1 I I I I I I I I I I I 1 I I I I I I I T 1 1 I I I I 1 I I I I I I I I I I I I I I I I T 7 I T I I I I I i T T 1 1 I I T 1 I Jill 20 30 40 50 60 70 80 90 100 110 120 Project Windsor East Mine Analysis Description Reclaimed Slope - Section 8 - Seismic inbTETRA TECH \ Drawn By M A Scale 1:15 0 Company Tt Lit IDEINIERPRET 9.016 Date 7/15/2022, 11:16:35 AM File Name Section 8.slmd FIGUR LO CV O 0 Safety Factor 0.00 0.25 0.50 0.75 1.00 1.25 1.50 1.75 2.00 2.25 2.50 2.75 3.00 3.25 3.50 3.75 4.00 4.25 4.50 4.75 5.00 5.25 5.50 5.75 6.00+ Material Name Color Unit Weight (lbs/ ft3) Sat. Unit Weight ft3) Strength Type _ Cohesion (psf) Phi (deg) (psf) UCS GSI mi D Overburden 110 126 _ Mohr - Coulomb 200 23 Native Sand 120 125 Mohr - Coulomb 0 30 Claystone 140 Generalized Hoek Brown 700000 50 4 0.7 -60 -40 -20 1.5 T 1 1 I 1 1 1 1 1 1JI I T 1 11 I I 1 1 1 1 20 40 60 80 100 120 140 160 180 111 TETRA TECH SE IDFINTERPRET 9.016 Project Windsor East Mine Analysis Description Drawn By MA Mine Slope - Section 8 - Static Scale 1:300 Date 7/15/2022, 11:16:35 AM Company -Ft File Name Section 8(mine slope).slmd FIGURE 8c - Safety Factor o - - - Sat. - - n nn Unit Unit -IS O LI J L") N rm C Material Color Weight Weight Strength Cohesion Phi UCS GSI mi D 0.08 Name (lbs/ ( T e Type (p s (deg) (psf) ft3) ft3) 10: r r Mohr _ 1.50 1 Ga Overburden 110 126 Coulomb 200 23 to `v 1.75 rMohr- 2.00 Native Sand 120 125 0 30 Coulomb - 2.25 Claystone 140 Generalized 700000 50 4 0.7 ir2.50 Hoek -Brown MER 9 7 I lisik o Ilr 1- r - ms. DOLC) 0LOC -ONLnI—C 'Cr 711 'Cr 7r Lt J.VV 5.25 1.3 - 5.50 5.75 6.00+ 0 U) 37 N i W• ilr ---I- I I I r r r r I r r r r I "I" -60 0 -40 -20 0 20 40 60 80 100 120 140 I r r I I r r r r i r r I I r t r r r "I 160 180 Project Windsor East Mine Analysis Description Mine Slope - Section 8 - Seismic lrat—% TETRA TECH• Drawn By MA Scale 1:300 Company Tt SLIDEINTERPRET 9.016 Date File Name 7/15/2022, 11:16:35 AM Section 8(mine slope).slmd FIGURI - - _ Material Name Color Weight Unit Ibs/ (lbs/ ft3) Sat. Unit Weight Strength Type yP Cohesion (P sf ) (deg) Phi UCS sf (P ) GSI mi D Overburden 110 126 Mohr - Coulomb 200 23 Claystone 140 Generalized Hoek -Brown 700000 50 4 0.7 coo Compacted Overburden 110 125 Mohr - Coulomb 100 28 Silty Sand ■ 120 125 Mohr - Coulomb 0 28 - 2.2 O 6 _ N� W W r yam__ - ____90Yta_________' - - - _r+iaa ... Ste+ wr .ay.____. y.^�:�_4.' s. ..—r ... —�.._ti.a►r _. - _ .-..- .. ..- .. -_. _. -•.w. -_ - --ub",-•- - - anti..._ .�..-4-. may_..yam-�r_....�n.. . _ _�euuL ... .. .. -, -_ ... ,.. .-- _. _. +' a i -- - - i I I I T I I 1 1 1 I II 20 II i I I--. I I I I I i I I ili [I i i I ! T T I I 40 60 80 100 120 Project Windsor East Mine • 1 TETRA TECH Analysis Description Reclaimed Slope Section 9 Static - - Drawn By M A Scale 1:15 0 Company Tt SLIDEINTERPRET 9.016. Date 7/15/2022, 11:16:35 AM File Name Section 9.slmd FIGURE 9a - - Material Name Color Weight (Ibs/ Unit ft3) Sat. Unit Weight (lbs/ft3) Strength Type Cohesion (psf) (deg) Phi UCS (psf) GSI mi D ► 0.08 - Overburden 110 126 Mohr- Coulomb 200 23 - Claystone 1 140 Generalized Hoek -Brown 700000 50 4 0.7 Compacted 110 125 Mohr - 100 28 Overburden Coulomb - Silty Sand 120 125 Mohr- 0 28 Coulomb 1.7 ,./ / / HE- W • VV • . I I I I III 0 10 20 30 40 50 60 70 80 90 100 110 Project Windsor East Mine Illt) TETRA TECH Analysis Description Reclaimed Slope - Section 9 - Seismic Drawn By MA Sca/e 1:150 Company Tt Date 7/15/2022, 11:16:35 AM File Name Section 9.slmd SLIDEINTERPRET 9.016 FIGURI o LU r 1.9 - - - Material Name Color Weight Unit (lbs/ ft3) Sat. Unit Weight (lbs/ft3) Strength Type p Cohesion (psf) Phi (deg) UCS (psf) GSI mi D ^ r i Mohr- CV r - Overburden 110 126 Coulomb 200 23 Claystone 140 Generalized Hoek -Brown 700000 50 4 0.7 _ r Compacted Overburden 110 125 Mohr Coulomb - 100 28 _ o Silty Sand ;. r, 120 125 Mohr- 0 28 • ,�- '4 Coulomb _ Stockpile 110 125 No strength U ti O LU LU (V W .z. - — : :r. �y7w -120 1 I I I I I I I IVV -100 -80 -60 -40 -20 0 20 40 60 80 100 "" 'f= 120 Project Windsor East Mine Analysts Description Reclaimed Slope - Stockpile - Section 9 - Static (lb) TETRA TECH Drawn By H Scale 1, 3 0 0 Company Tt sLIDEINTERPRET9.016 Date 7/15/2022, 11:16:35 AM Name ame Section 9_Stockpile.slmd FIGURE 9c o 0 - Material Color Unit Weight Sat. Unit Weight (Ibs/ Strength Cohesion Phi UCS GSI mi o 0.08 Name (lbs/ft3) ft3) Type (psf) (deg) (psf) 1.5 1 ici; Mohr - Overburden 110 126 -200 Coulomb 23 Claystone 140 Generalized Hoek -Brown 700000 50 4 0.7 _ Compacted Mohr - - Overburden 110 125 Coulomb 100 28 Silty Sand 120 125 Mohr - Coulomb 0 28 _ Stockpile 110 125 No strength . 0 0 0 1- N • • \n/ - . .. _-1.— b -t--.•_.r,-. _�; .-� -�.. -� - .� --_ �- v-i--.•"c- .-.,a- w.r��. .� Y"� --...r ..�. -._ .f ,...i ---r.i> .,�`-"1 ""I `....'_1_-_` _. - _ - -1 -..ar.. ---�--� ..,rm' i.. } r.. r I -60 -40 I -20 r" rare- �.,.. r I r i T �_ t` T" Jr i 1 `1 , f f' i 1 i 0 20 40 60 80 100 Project Windsor East Mine TETRA TECH Analysis Description Reclaimed Slope - Stockpile - Section 9 - Seismic (Th J Drawn By AJH Scale 1:200 Company Tt Date 11:16:35 Fire Name sLIDEINTERPRET 9.016p 7/15/2022, AM Section 9_Stock Ile.slmd FIGUR Safety Factor 0.00 0.25 0.50 0.75 1.00 1.25 1.50 1.75 2.00 2.25 2.50 2.75 3.00 3.25 3.50 3.75 4.00 4.25 4.50 4.75 5.00 5.25 5.50 5.75 6.00+ SLIDEINTERPRET 9.016 Material Name I 1 Color Unit Weight (Ibs/ft3) r Sat. Unit Weight (lbs/ft3) Strength Type Cohesion (psf) (deg) Phi UCS (psf) GSI mi D Overburden 110 - 126 Mohr Coulomb - 200 23 Claystone 140 Generalized Hoek Brown a 700000 50 4 0.7 Silty Sand 120 125 Mohr Coulomb - 0 28 ' TETRA TECH Project Analysis Description Drawn By 1.5 1 1 1 1 1 1 1 1 i T i i- 1 I- T? 20 40 60 80 7/15/2022, 11:16:35 AM Scale Windsor East Mine a I 1- 1- f I 1- i - 1 -1 I --1--r- i f 100 120 140 160 Mine Slope - Section 9 - Static File Name Section 9(mine slope).slmd FIGURE 9e Safety Factor 0.00 0.25 0.50 0.75 _ 1.00 1.25 _ 1.50 1.75 _ 2.00 � 2.25 2.50 2.75 3.00 �,. 3.25 3.50 3.75 i` 4.00 4.25 _ 4.50 _ 4.75 _ 5.00 5.25 5.50 5.75 6.00+ Material Name Color Unit U Weight (lbs/ ft3) Sat. Unit Weight (lbs/ ft3) Strength Type Cohesion (psf) Phi (deg) UCS (psf) GSI S mi D Overburden 110 126 Mohr - Coulomb 200 23 Claystone 140 Generalized Hoek -Brown 700000 50 4 . , 0.7 Silty Sand 120 125 Mohr- Coulomb 0 28 -80 -60 -40 -20 TETRA TECH SLIDEINTERPRET 9.016 1.3 TT--i - T ---T-1- "-1 - 1.1-1 T-1 1 I 1 f r T i r r J T r- r 1-ir 1 1 I 1 1 T i i r- (- 1_ 1 i to: o 08 III I III III II I I I I 20 40 60 80 100 120 140 160 Project Windsor East Mine Analysis Description Mine Slope - Section 9 - Seismic Drawn By MA Scale 1:300 Date 7/15/2022, 11:16:35 AM Company Tt File Name Section 9(mine slope).slmd FIGURI _ Material Name Color Unit Weight (lbs/ ft3) Sat. Unit Weight (Ibs/ft3) Strength Type Cohesion (psf) Phi (deg) UCS (psf) GS! mi D - Overburden 110 126 Mohr- Coulomb 200 23 I I Native Sand 120 125 Mohr- Coulomb 0 30 Generalized o Claystone 140 Hoek -Brown 700000 50 4 0.7 1 Compacted Overburden ' 110 125 Mohr Coulomb - 100 28 /2.3 O V N w Jr -f - -r- -T--T - -I- T 1 I T i TIIIIITI I Y T T 1 T 1 T- I I i T I 10 20 30 7 7 i--T i j I I I I 1 T r- T T r TTi-T i ! I r I T ` 1 I I i T -T T 1 T T -T T-i r T I r1 _ 7 T -- T- T -T r C7-7 I T ! T T i- I I I I l I T 7 I I T T I 1 1 I T MT -f r T 1 r I 1 1 r -777 40 1 50 1 60 1 70 1 80 1 90 1 100 1 111 0 120 130 Project Windsor East Mine TETRA TECH Analysis Description Slope - Section 10 - Static Ilt) Drawn By MA Scale 1:15 0Reclaimed Company Tt Date 7/15/2022, 11:16:35 AM Section 10.slmd File Name SLIDFINTERPRET9.016 FIGURE 10a - Material Name Color Weight Unit (Ibs/ ft3) Weight Sat. Unit (lbs/ ft3) Strength Type Cohesion (psf) (deg) Phi UCS (psf) GSI mi D itiiity: 0.08 - Overburden 110 126 Mohr- Coulomb 200 23 Native Sand 120 125 Mohr Coulomb - 0 30 o Generalized Claystone 140 Hoek- 700000 SO 4 0.7 Brown Compacted 110 125 Mohr- 100 28 1.7 O Overburden Coulomb 0 -.4 , W l 4' .Y W• ...:- -_. , _. _. ,— • p '•gin 0 10 20 30 40 50 60 r r r i S r S r t r f 1 r r i ii----1,-,s=hit,--- i I 70 80 90 100 r r j r T r 1 T T r r I 1 I 110 120 Project Windsor East Mine `ult Analysis Description TETRA TECH Section 10 - Seismic Drawn By M A Scale 1:150 Company Tt SLIDEINTERPRET 9.016 Date 7/15/2022, 11:16:35 AM File Name Section 10.slmd FIGUR Safety Factor 0.00 0.25 0.50 0.75 1.00 1.25 1.50 1.75 2.00 2.25 2.50 2.75 3.00 3.25 3.50 3.75 4.00 4.25 4.50 4.75 5.00 r�- 5.25 5.50 5.75 6.00+ .s. SLIDEINTERPRET 9.016 Material Name Color Unit Weight (Ibs/ft3) i Sat. (lbs/ft3) Unit Weight Strength Type Cohesion (psf) Phi (deg) UCS (psf) GSI mi D Overburden 110 126 Mohr Coulomb - 200 23 Native Sand 120 125 Mohr - Coulomb 0 30 Claystone 140 Generalized Hoek -Brown 700000 50 4 0.7 .tri.y.sr•-•.- . .». --y -r -r-c--r-t- :.n r -.F • -.re- TETRA TECH Project Analysis Description Drawn By 7/15/2022, 11:16:35 AM Scale Windsor East Mine Mine Slope - Section 10 - Static Company 1.5 Section 10(mine slope).slmd W FIGURE 10c Safety Factor 0.00 Unit Sat. Unit `- 0.25 Material Strength Cohesion Phi UCS - 0. 50 Name Color Weight Weight Type (psf) (deg) (psf) GSl mi D ► 0.08 (Ibs/ft3) (lbs/ft3) 0.75 - 1 00 Overburden 110 126 Mohr- 200 23 _ . Coulomb 1.3 1.25 1 50 Native Sand 120 125 Mohr- - . Coulomb 0 30 - 1.75 2 Generalized .00 Claystone 140 700000 50 4 0.7 Hoek -Brown 2.25 2.50 2.75 - 3.00 3.25 3.50 3.75 _ 4.00 4.25 coo - 4.50 4.75 5.00 _ 5.25 5.50 5.75 6.00+ 0 20 _ f 0 CV Jy r 1 -60 -40 -20 0 20 40 60 80 100 Pi o)lcct Windsor East Mine Analysis Description leni) TETRA TECH Mine Slope - Section 10 - Seismic Drawn By MA Scale 1:200 Company Tt Date File Name SLIDEINTERPRET 9.016 7/15/2022, 11:16:35 AM Section 10(mine slope) .slmd FIGUR - Material Name Color Unit Weight (Ibs/ ft3) (Ibs/ft3) Sat. Weight Unit Strength Type Cohesion (psf) Phi (deg) UCS (psf) GSI mi D _ Overburden 110 126 Mohr Coulomb - 200 23 - Native Sand 120 125 Mohr Coulomb - 0 30 _ Generalized Claystone 140 Hoek -Brown 700000 50 4 0.7 _ _ Compacted Overburden 110 125 Mohr Coulomb - 100 28 7 o • N - . • W -T" -�., _ r f l- ... -r , r 10 I fi r 1'we , �. , , 20 r . f r•}_-�`�? I 1 1 30 17 40 50 60 70 80 90 100 110 120 I Project Windsor East Mine Analysis Description Slope - Section 11 - Static TECH Lail_ iil Drawn By MA scale 1:150Reclaimed Company Tt ...:TETRA ,l IDFINTERPRET 9.016 Date 7/15/2022, 11:16:35 AM File Name Section 11.slmd FIGURE lla - Material Name Color Unit Weight (lbs/ft3) Sat. Unit Weight (lbs/ft3) Strength Type Cohesion (psf) Phi (deg) UCS (psf) GSI mi D ► 0.08 — Overburden 110 126 Mohr Coulomb 200 23fr Native Sand . 1 120 125 Mohr - Coulomb 0 30 Claystone 140 Generalized Hoek -Brown 700000 50 4 0.7 Compacted Mohr - Overburden 110 125 Coulomb 100 28 - 1.5 O g - 4- - O ► W • 10 20 30 40 50 60 70 80 90 100 110 120 Project Windsor East Mine Analysis Description Reclaimed Slope - Section 11 - Seismic TETRA TECH (Thl Drawn By MA Scale 1:150 Company Tt SLIDEINTERPRET 9.016 Date 7/15/2022, 11:16:35 AM File Name Section 11.slmd FIGURI Factor 0.00 0.25 0.50 0.75 1.00 1.25 1.50 1.75 2.00 2.25 2.50 2.75 3.00 3.25 3.50 3.75 4.00 4.25 4.50 4.75 5.00 5.25 5.50 5.75 6.00+ Material Name Color Unit Weight (Ibs/ft3) Sat. Unit Weight (Ibs/ft3) Strength Type Cohesion (psfl Phi (deg) UCS (psfl GSI mi D Overburden 110 126 Mohr - Coulomb 200 23 Native Sand 120 125 Mohr- Coulomb 0 30 Claystone 140 I Generalized Hoek -Brown 700000 50 4 0.7 W TETRA TECH SLIDEINTERPRET 9.016 Analysis Description Drawn By Date 7/15/2022, 11:16:35 AM Scale Windsor East Mine Mine Slope - Section 11 - Static Company File Naive 100 120 Section 11(mine slope).slmd FIGURE 11c 20 40 80 100 120 Safety Factor 0.00 0.25 0.50 0.75 1.00 1.25 _ 1.50 1.75 _ 2.00 2.25 2.50 2.75 3.00 3.25 3.50 3.75 _ 4.00 _ 4.25 _ 4.50 - 4.75 _ 5.00 5.25 5.50 5.75 6.00+ SLIDEINTERPRET 9.016 1.3 Material Name Color Unit Weight (Ibs/ft3) Sat. Weight ft3) Unit (Ibs/ Strength Type Cohesion (psf) Phi (deg) UCS (psf) GS' mi D Overburden 110 126 Mohr Coulomb 200 23 Native Sand 120 125 Mohr Coulomb - 0 30 Claystone 140 Generalized Hoek -Brown 700000 50 4 0.7 -40 -20 TETRA TECH Project Analysis Description Drawn By 7/15/2022, 11:16:35 AM Scale II 60 Windsor East Mine Mine Slope - Section 11 - Seismic Company File Name Section 11(mine slope).slmd I I ► 0 0 FIGUR o La - _ Material Unit Sat. Unit Cohesion Phi UCS - Name Color Weight ft3) (lbs/ Weight ft3) (lbs/ Strength Type (psf) (deg) (psf) GSI mi D - Overburden 110 126 Mohr Coulomb - 200 23 Native Sand 120 125 Mohr - Coulomb 0 30 Ln N r Claystone 140 Generalized Hoek -Brown 700000 50 4 0.7 _ Compacted Overburden 110 125 Mohr Coulomb - 100 28 o 0 r U) N- 2.4 Waterline Easement fV W vy `:' O - G -160 -140 -120 1 -100 -80 -60 -40 2 1 -1 0 0 T I I I I I I I MIMI -T---T- T I I ET I I I 11 TI -T 1 TT -1- 1 1 20 40 I 60 1 80 Project Windsor East Mine TETRA TECH Analysis Description Reclaimed Slope - Section 12 - Static (Thl (SW) Drawn By MA Scale 1 :3 00 Company Tt I IDEINTERPRET 9.016 Date 7/ 15/2022 11:16:35 AM File Name Section 12.slmd FIGURE 12a _ - - Material Name Color Unit Weight (lbs/ft3) Sat. (lbs/ft3) Unit Weight Strength Type Cohesion (psf) (deg) Phi UCS (psf) GSI mi D 0Og . , lostm: - N Overburden 110 126 Mohr Coulomb 200 23 I r es - - Native Sand 120 125 Mohr -0 Coulomb 30 Claystone 140 Generalized Hoek -Brown 700000 50 4 0.7 a- Compacted Overburden 110 125 Mohr - Coulomb 100 28 o - - 0 r U) ti 0 U-) 1 . 9 - Waterline Easement - 7I LU N - W O - -1 "I I ""1"" -140 I I I I I I I I I I I I I I I I 1 I- I I I I I 1 I I I II I I I I I I I I I I I I I I I I I I I I I I I, I I I I I I I 1 I I I I -120 -100 -80 -60 -40 -20 0 I I I I I I I I I I I I I I I I I I I T i I"I" " 1 I"" I I I I I T-1 I I r 20 40 1 60 80 Project Windsor East Mine Sat t Analysis Description Reclaimed Slope - Section 12 - Seismic (SW) TETRA ECH L J Drawn By M A Scale 1:300 Company Tt SLIDEINTERPRET 9.016 Date 7�15�2022, 11:16:35 AM Section 12.slmd File Name FIGUR o^ Safety Factor n nn PI& nial -)oL( -CC' 00 2.25 Material Unit Sat. Unit Cohesion Phi UCS 2.50 Color Weight Weight (lbs/ Strength Type GSI mi D 2.75 Name (lbs/ft3) ft3) (psf) (deg) (psf) ern 3.00 — 3.25 Overburden 110 126 Mohr- 200 23 Egopmilir Coulomb 3.50 3.75 Mohr- 4.00 Native Sand 120 125 0 30 Coulomb o - 4.25 Generalized - 4.50 - 1'5 Claystone 140 Hoek -Brown 700000 50 4 0.7 4.75 _ _ - - r 5.00 5.25 5.50 - 5.75 6.00+ Waterline Easement 17 >� C )1r CV \ .RcOC— p 11NilYr earr ...� Al w . .- -. .i. . .7..� .. _' .. . •. ..-. .:_. _ .... ., ._ ..- . , . ._ •_ 40I1111Wiall..� _-t -- TT__ I T i 1 1 T T 1 1 1 T T. T T T 1 T T T I I L.-. 1 1 I 1 1-_T 1 I I j 7 i 1 I 1 1 I I 1 -160 -140 -120 -100 -80 -6 110 -40 -20 0 Project Windsor East Mine Analysis Description Mine Slope - Section 12 - Static (SW) (11t1 TETRA TECH Drawn By MA Scale 1:200 Company Tt SLIDEINTERPRET 9.016 Date 7/15/2022, 11:16:35 AM File Name Section 12(mine slope).slmd FIGURE 12c o Safety Factor 0.00 0.25 0.50 0.75 1.00 1.25 1.50 1.75 2.00 2.25 2.50 2.75 3.00 3.25 3.50 3.75 4.00 4.25 4.50 4.75 5.00 5.25 5.50 5.75 6.00+ kA/ Its: o 08 Material Name Color (Ibs/ft3) Weight Unit Sat. Weight ft3) Unit (lbs/ Strength Type Cohesion (psf ) (deg) Phi de UCS (p sf ) GSI mi D Overburden 110 126 Coulomb Mohr- 200 23 Native Sand 120 125 Coulomb Mohr- 0 30 Claystone 140 Generalized Hoek -Brown 700000 50 4 0.7 r - Waterline Easement 1 -160 -140 -120 -100 -80 -60 -40 -20 TETRA TECH SLIDEINTERPRET 9.016 Project Windsor East Mine Analysis Description Mine Slope - Section 12 - Seismic (SW) Drawn By MA Scale 1:200 company Tt Date 7/15/2022, 11:16:35 AM File Name Section 12(mine slope).slmd FIGUR 0 to 1 — - - Material Name Color (lbs/ft3) Unit Weight Sat. Unit Weight ft3) (lbs/ Strength Type Cohesion (psf) Phi (deg) (psf) UCS GSI mi 0 - Overburden 110 126 Mohr- Coulomb 200 23 in - Native Sand 120 125 Mohr Coulomb -0 30 _ N Claystone r 140 Generalized Hoek -Brown 700000 50 4 0.7 - Compacted Overburden 110 125 Mohr- Coulomb 100 28 o 0 r U, ti O LU 2.5 Waterline Easement 4 N Ilk Ilr - W W • • - Th,,,. '.Y.. ..b. k. -a/ ....iK. Y 4.0.0114 ..A:1‘6eati.4'.iillS in0!> .OllieIlIraYeiviJStiiiiiSi1nst6i _ • - O.- . _ 1 / - - I I I 1( I I I T ECT I I I I I I 1 I 1 T T T -T 1 1 1 1 I 1 I I T I 1 1 1 1 1 1 1 1 TITIIIIITTIIIIIIII -140 -120 -100 -80 -60 -40 -20 0 20 40 60 80 Project Windsor East Mine Analysis Description Reclaimed Slope - Section 12 - Static (NE) TETRA TECH (It) Drawn By MA Scale 1:300 Company Tt SLIDEINTERPRET9.016 Date 7/15/2022, 1 11:16:35 AM File Name Section 12.slmd FIGURE 12e u U,— - Material Name Color (Ibs/ft3) Weight Unit Sat. Unit Weight (lbs/ft3) Strength Type Cohesion (psf) Phi (deg) UCS (psf) GSI . mi D ► 0.08 isois Overburden 110 126 Mohr- Coulomb 200 23 Mohr- ,-- _ Native Sand 120 125 Coulomb 0 30 _ Claystone 140 Generalized Hoek -Brown 700000 50 4 0.7 Compacted Overburden 110 125 Mohr Coulomb - 100 28 _ o 0 r l~ 0 U,- 1.9 Waterline Easement W _ _ .. ._ _.. ... - • • _ _. _ -- -I MI T I I TT 1111 -140 Tom,, I I I I I I I r I Z 1 1 1 I I I I I I 1 I I I I I r I I I I 1 1 1 I I I I I I I T I -1 -I I I T I I I I I I I t_.. r I I I I I I 1 -120 -100 -80 -60 -40 -20 I l I I I I I I I I I I I I I I I I I I- I I I 1 1 I 1 U I I I 1 7 1 I I I I I I I I I r I I r 1 l f-' 0 20 40 60 80 Project Windsor East Mine Analysis Description Reclaimed Slope - Section 12 - Seismic (NE) (Thl TETRA TECH Drawn By MA Scale 1:300 Company Tt Ll II)E INTERPRET 9.016 Date 7/15/2022, 11:16:35 AM File Name Section 12.slmd FIGUR Safety Factor 0.00 0.25 0.50 0.75 1.00 1.25 1.50 1.75 2.00 2.25 2.50 2.75 3.00 3.25 3.50 3.75 4.00 4.25 4.50 4.75 5.00 5.25 5.50 5.75 6.00+ MaterialColor Name (Ibs/ft3) Weight Unit Sat. (Ibs/ft3) Weight Unit Str Strength Type a n Cohesion (psf) (deg) Phi (psf) UCS GSI mi D Overburden 110 126 Coulomb Mohr - 200 23 Native Sand 120 125 Coulomb Mohr- 0 30 Claystone 140 Generalized Hoek -Brown 700000 50 4 0.7 Waterline Easement T 7 I--rmr".`.1 ( -f' r- - 1 1 -100 -80 -60 -t I - T-- - -- r ---,--T- -40 -20 I I I I Till I I 20 I I f 40 60 1 I 11. TETRA TECH SLIDEINTERPRET 9.016 Project Windsor Last Mine Analysis Description Mine Slope - Section 12 - Static (NE Drawn By MA Scale 1:200 Company Tt Date 7/15/2022, 11:16:35 AM File Name Section 12(mine slope).slmd FIGURE 12g Safety Factor - - - - o Unit Sat. Unit 0.00 _ 0.25 Material Color Weight Weight Strength Cohesion Phi UCS GS! m. � D - �" - 0.50 Name Type (psf) (deg) (psf) ► 0.08 - Ibs/ft3 (Ibs/ft3) ` 0.75 -_ 1 Mohr- 1 .00 Overburden 110 126 Coulomb 200 23 .25 1.50 _ 1.75 Native Sand I 120 125 Mohr - 0 30 Coulomb 0 2.00 2.25 Generalized 2.50 ClaystoneI 140 Hoek 700000 50 4 0.7 1.3 -Brown - - _ — 2.75 3.00 -el 3.25 3.50 3.75 4.00 - 4.25 - 4.50 4.75 5.00 5.25 - 5.50 5.75 6.00+ - Waterline Easement 18 >1 ( ) m O I I -T I r'_T.- r - r- I- T I 1 I I r I r r -80 -60 -40 1 -20 0 20 40 60 Pi yject Windsor East Mine Analysis Description Mine Slope - Section 12 - Seismic (NE) (lbl TETRA TECH Drawn By MA stoic 1:200 Company Tt SLIDEINTERPRET 9.016 °`'t`' 7/15/2022, 11:16:35 AM File Name Section 12(mine slope).slmd FIGUR Martin Marietta October 6, 2022 Weld County Clerk to the Board's Office 1150 O Street Greeley, CO 80631 RE: Notice of Application for a Mined Land Reclamation Permit (M-2022-042) To Whom It May Concern: Julie Mikulas Regional Land Manager Enclosed is a revised application form for the Windsor East Mine Application that was delivered to you on September 22, 2022. On page 2 of the application form, we had inadvertently left in a Latitude/Longitude in degrees, minutes, seconds from a previous permit application at a different location. The Latitude/Longitude in decimal degrees was correct on the original application submitted. We are also adding additional pages to Exhibit N to clarify our understanding with the property owner. The copy of this revised application form and additions to Exhibit N are being delivered to you pursuant to 34-32.5-112(9)(a), C.R.S., as amended. These revised and additional pages should be made available for public review along with the application that was delivered on September 23, 2022 until the permit has been approved by the Division of Reclamation, Mining and Safety. Please acknowledge receipt of this copy of the application form by signing below. We need proof of delivery to the Division of Reclamation, Mining and Safety. Sincerely, Julie Mikulas Regional Land Manager Enclosures: Exhibit A application form revised 2022-10-06 RECEIVED THIS DAY OF 2022. Weld County Clerk to the Board By: RECEIVED Name: Title: OCT 04, 2022 WELD COUNTY COMMISSIONFRS Rocky Mountain Division — Northern Office 1800 N Taft Hill Road, Fort Collins, CO 80534 julie.mikulas@martinmarietta.com www.martinmarietta.com -2- 6. Name of owner of subsurface rights of affected land: State of Colorado Board of Land Commissioners If 2 or more owners, "refer to Exhibit O". 7. Name of owner of surface of affected land: GWIP, LLC 8. Tvoe of mining operation: _1 Surface g Underground 9. Location Information: The center of the area where the majority of mining will occur: PRINCIPAL MERIDIAN (check one): SECTION (write number): TOWNSHIP (write number and check direction): RANGE (write number and check direction): QUARTER SECTION (check one): QUARTER/QUARTER SECTION (check one): NE _ NW SE !--•-1 SW COUNTY: Weld 6th (Colorado) El 10th (New Mexico) ri Ute 36 S T 6 D✓ ,North El South R 67 E. East ✓ West DoSW GENERAL DESCRIPTION: (the number of miles and direction from the nearest town and the approximate elevation): Annexed to City of Windsor at 4720 ft elevation 10. primary Mine Entrance Location (report in either Latitude/Longitude QR UTM): Latitude/Longitude: Example: (N) 39° 44' 12.98" (W) 104° 59' 3.87" Latitude (N): deg min sec (2 decimal places) Longitude (W): deg min sec (2 decimal places) OR Example: (N) 39.73691° (W) -I04.98449° Latitude (N) 40 .45004 (5 decimal places) Longitude(W) -104 .85136 (5 decimal places) OR Universal Tranverse Mercator (UTM) Example: 201336.3 E NAD27 Zone 13 4398351.2 N UTM Datum (specify NAD27, NAD83 or WGS 84) Nad 83 Easting Northing Zone 13 Access Right to Enter GWIP, LLC grants Martin Marietta, Inc. permission to use the existing shared access south of the house and north of the lease area for employee access, equipment deliveries and emergency access. Located in the norttywest portion ofiarcel 080736000021. Highlighted below in red. Name: DEAN A . &tow") Its: Ac,gnr STATE OF COLORADO COUNTY OF ti0eA(� ALEYCIA RAPE ARAGON Notary Public State of Colorado Notary ID # 20214022660 My Commission Expires 06-10-2025 The foregoing instrument was acknowledged before me this day of cCQkf(fl2O221bY D A A (Sr • Witness my hand and official seal. ova Notar4 Public Legal Right to Enter GWIP, LLC grants Martin Marietta, Inc. permission to access the area south of the lease area between the lease and the river to install dewatering pipe at ground level for the permitted process water discharge permit approved by the State of Colorado. Located in the south portion of parcel 080736000921. Highlighted below in red. G. Name: fl1EAN 4 . 8n.ow,u Its: 4&ejr STATE OF COLORADO COUNTY OF Li.e\ L� The foregoing instrument was acknowledged before me this Sep tr ` , 2022, by DCQc\ Rie-OL.)v\ Witness my hand and official seal. 2c( ALEYCIA RAVE ARAGON Notary Public State of Colorado Notary ID # 20214022660 My Commission Expires 06.10-2025 day of 4 Veal aw Notary Public l Hello