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HomeMy WebLinkAbout2815 Casco Pt Rd Ex A Resol 7315 CITY OF RONO RESOLUTION OF THE CITY COUNCIL NO. 7315 1 A RESOLUTION APPROVING AN EMERGENCY SLOPE REPAIR PURSUANT TO MUNICIPAL ZONING CODE SECTION 78-1726 WHEREAS, on November 11, 2022, Josh Prust with Valdes Lawn and Snow (hereinafter the “Applicant”), applied for authorization to proceed with an emergency repair of the lake slope pursuant to City Code 78-1726, on property addressed 2815 Casco Point Road and legally described as: All that part of Lot 120 Spring Park, and all the Unplatted land and that portion of Lake Shore Avenue vacated, lying between Lot 120 of Spring Park and the side lines of said Lot projected to Lake Minnetonka, which lies northwesterly of a line running parallel with and five feet northwesterly from the southeasterly line of said Lot and the extension thereof, Hennepin County, Minnesota (hereinafter the “Property”); WHEREAS, the Applicant submitted documentation from a licensed professional engineer which indicates that failure of the current lake yard slope and the existing retaining walls on the Property is imminent; and WHEREAS, the Applicant has made a request to the City of Orono for an emergency slope repair pursuant to Orono Municipal Zoning Code Section 78-1726; and WHEREAS, on November 22, 2022, a corrective restoration plan was provided by the Applicant’s licensed professional engineer to reinforce the vulnerable slope; and WHEREAS, the engineered plans propose construction of an additional ± 2 foot tall wall at the top of the slope within the 75’ setback from the ordinary high water level (hereinafter the “OHWL”) of Lake Minnetonka where no walls are permitted and existing walls are at risk of failure; and WHEREAS, due to their design and proximity to the OHWL the new retaining walls will require a setback variance from City Code section 78-1279; and WHEREAS, on November 28, 2022, the City Council reviewed the request, the engineered plans, and the recommendations of the City staff; and CITY OF RONO RESOLUTION OF THE CITY COUNCIL NO. 7315 2 NOW, THEREFORE, BE IT RESOLVED that the City Council of Orono, Minnesota hereby approves the requested emergency slope repair including new engineered retaining walls as described above based on one or more of the following findings of fact concerning the Property: FINDINGS OF FACT: 1. The analysis contained within staff memos and the exhibits attached to the aforesaid memos, all minutes from the above mentioned meetings, and any and all other materials distributed at these meetings are hereby incorporated by reference. 2. The Property is located in the LR-1C One Family Lakeshore Zoning District. 3. The Property contains 0.34 acres in area and has a defined lot width of 56 feet. 4. The Property is within Tier 1 and hardcover is limited to 25% according to the Stormwater Quality Overlay District. 5. The Property was subject to a fire on the lake slope in July 2022 which destroyed the previously existing timber retaining walls, stairs, deck, and storage shed leaving the slope vulnerable to failure. 6. The Applicant applied for an administrative building permit to rebuild the existing walls in- kind. 7. The construction of the replacement walls expanded beyond the in-kind reconstruction and the project was stopped and stabilized. The Applicant ascertains that without the top wall the slope remains at risk for failure over the winter and spring. 8. The Applicant has submitted an opinion from a licensed professional engineer which indicates that without the construction of the upper wall the slope is under imminent threat of failure. 9. The Applicant has requested consideration for an emergency slope repair pursuant to City Code Section 78-1726. Engineered plans were provided which demonstrate the proposed corrective action. 10. Retaining walls are not permitted within 75-feet of the OHWL; installation of new walls require City Council approval of a lake setback variance. 11. In considering this application for emergency slope repair, the Council has considered the advice and recommendation of the City Staff and the effect of the proposed emergency CITY OF RONO RESOLUTION OF THE CITY COUNCIL NO. 7315 3 slope repair upon the health, safety and welfare of the community, existing and anticipated traffic conditions, light and air, danger of fire, risk to the public safety, and the effect on values of property in the surrounding area. CONCLUSIONS, ORDER AND CONDITIONS: Based upon one or more of the above findings, the Orono City Council hereby grants approval to proceed with an emergency slope repair pursuant to Orono Municipal Zoning Code Section 78-1726 to allow the repair of the existing retaining walls including installation of new retaining walls according to the approved plan, subject to the following conditions: 1. Council approval is based on the entire record, above Findings. 2. The approved emergency slope repair shall conform to the submitted plans (hereinafter the “Plans”) submitted by the Applicant and annotated by City staff, attached to this Resolution as Exhibit A. 3. Any amendments to the emergency slope repair which are not in conformity with City codes may require further Planning Commission and City Council review. 4. The Applicant shall apply for and receive an after-the-fact variance from City Code 78- 1279 prior to release of the Stop Work order for building permit RAS22-000082 to be resumed for finalization of construction of the walls. 5. Authorities granted by this resolution run with the Property not with the Applicant, but are permissive only and must be exercised by obtaining a variance and building permit for the Plans. After-the-fact variance approval for the expanded retaining walls must be obtained within 90 days of the date of Council approval, or the action will expire after February 26, 2023. 6. Violation of or non-compliance with any of the terms and conditions of this resolution may result in the termination of any authority granted herein. ADOPTED by the Orono City Council on this 28th day of November, 2022. ATTEST: CITY OF ORONO: _______________________________ ________________________________ Anna Carlson, City Clerk Dennis Walsh, Mayor           November 22, 2022 Josh Prust Valdes Lawn Care & Snow Removal Submitted by email: jpeterson@valdeslawn.com RE: Supplemental Report - Timber Retaining Wall Upper Tier Project Location: 2815 Casco Point Road, Orono, Minnesota Project No. 22-6589 Dear Mr. Prust: This letter is being sent in response to the email we received from Melanie Curtis from the City of Orono. Based on her review of my previous letter to you dated November 18, 2022, she is requesting additional information. It is my professional opinion that the work I recommended should qualify in regards to City Code Section 78-1726 (6): Emergency repair exception. The slopes at the top of the timber retaining walls constructed to-date are much steeper than originally designed. The construction of the final, planned retaining wall at the top of the tiered retaining wall system is required to stabilize these slopes. Failure to stabilize and reduce the steepness of these slopes with the construction of the planned wall will likely result in a slope failure, significant erosion, and damage to the retaining walls already constructed. Refer to my original design dated August 24, 2022, and my previous letter dated November 18, 2022, for further information. Please call me if you have any questions or need more information. Thank you. Sincerely, Paul Schimnowski, P.E. MN #40126 I hereby certify that this plan, specification, or report was prepared by me or under my direct supervision and that I am a duly Licensed Professional Engineer under the laws of the State of Minnesota. Paul Schimnowski, P.E.  Date: November 22, 2022 License #: 40126 (MN)           November 18, 2022 Josh Prust Valdes Lawn Care & Snow Removal Submitted by email: jpeterson@valdeslawn.com RE: Timber Retaining Wall Upper Tier Project Location: 2815 Casco Point Road, Wayzata, Minnesota Project No. 22-6589 Dear Mr. Prust: This letter includes important details regarding the completion of planned work at the above location. These recommendations are based on my original design dated August 24, 2022, and my site observations and discussion with you on October 31 and November 17, 2022. This previously designed work is recommended to be completed at this time to improve the site grading by reducing the steepness of some slopes and will reduce the chances of erosion at the top of the newly built, tiered timber retaining wall system. I recommend that the final, planned timber retaining wall be constructed 4 to 6 feet behind the uppermost existing wall. The wall should extend from several feet inside both the east and west property lines. Most of the wall will have a maximum exposed height of about 2-feet. The wall height will increase to about 4- feet tall near each end where existing slopes increase. Following completion of the final wall, erosion control should be established and maintained in all disturbed areas. Areas of concentrated runoff should be directed away from the top of the walls. As before, the attached typical section should be referenced for construction details. Special note should be made of the wall embedment depth and the tieback/header and deadmen lengths. Refer to local building codes, industry specifications, and American Wood Preservers Association for installation information and details. The design of the wall system assumes the following:  Wall location: 4 to 6 feet behind the top of the existing upper wall  Wall height(s): 4-feet to 2-feet as noted (maximum exposed heights)  Minimum embedment depth = 6” min., or as noted  Soil conditions: Silty/Clayey Sand, friction angle = 30.0 degrees, unit weight of 125.0 lb/ft3  Required minimum soil bearing capacity = 1500 psf  Surcharge load at top of wall: None  5:1 maximum slope at top and bottom of wall  Wall Type: 6”x5” Treated Timber  Connections: 3/8” galvanized or treated spikes  Drainage pipe: Required As we discussed, you are planning to that the as-built conditions surveyed for city consideration. Please forward this to me when it is completed. 2815 Casco Point Road, Wayzata, Minnesota November 18, 2022 Page | 2    These walls have not been designed for ground water surcharge loads. Direct all surface and groundwater drainage away from the walls. Methods to do so include but are not limited to the following: 2815 Casco Point Road, Wayzata, Minnesota November 18, 2022 Page | 3    drainage swale, site grading, retention ponds, etc. Details of water control are left to the wall contractor or the site civil engineer. Please contact Criterium-Schimnowski to provide additional site assessment services if desired. The wall design was performed using the design guidelines presented in timber retaining wall industry guidelines and recommendations. Additional information requested by Criterium-Schimnowski Engineers but not available includes: geotechnical site survey and soil data. If soil conditions, proposed wall layouts, or other design parameters vary from that assumed, a revised analysis may be needed. Please call me if you have any questions or need more information. This design has been prepared in strict confidence with you as our client. Reliance upon our design by other parties is strictly prohibited. If you choose to share our design, you agree to indemnify, defend and hold harmless the Engineer from any third-party action. No reproduction or re-use is permitted without express written consent. Further, we will not release this design to anyone without your permission. Thank you. Sincerely, Paul Schimnowski, P.E. MN #40126 I hereby certify that this plan, specification, or report was prepared by me or under my direct supervision and that I am a duly Licensed Professional Engineer under the laws of the State of Minnesota. Paul Schimnowski, P.E.  Date: November 18, 2022 License #: 40126 (MN) 2815 Casco Point Road, Wayzata, Minnesota November 18, 2022 Page | 4    Retaining Wall Completion Reports and  Construction Inspections    To:  Retaining wall contractors and/or all clients utilizing our services for retaining wall engineering.    From:  Paul Schimnowski, PE   Retaining Wall Engineer  Criterium‐Schimnowski Engineers (CSE)  Paul@CriteriumMN.com    Date: April 1, 2022     To help contractors and other interested parties navigate the changes that many cities and jurisdictions  are making regarding construction inspection requirements and final approval letters, we are making  the following recommendations:    1. Request that the City Building Official complete the Required Inspections of Retaining Walls  form, attached.     2. Notify your client of the potential for added cost depending on city/building official  requirements. Contact our office or refer to our service agreement for current fees.    3. Contact Criterium‐Schimnowski Engineers to schedule any required inspections. Adequate lead  time is required. Similar to typical City inspections, at least one week is recommended. We  cannot guarantee immediate service.    4. Take daily construction progress photos for your records and for submittal to Criterium‐ Schimnowski Engineers upon request.    5. Complete the Statement of Conformance for your records and for submittal to Criterium‐ Schimnowski Engineers upon request. Form attached.     If a Wall Completion Report (Post‐built Conformance Letter), is requested of CSE, we will require that  you provide construction photos and Statement of Conformance. In addition, CSE will need to perform  a site visit once final grading is completed. Without these three items, we are unable to comment on  the construction/conformance of the wall.     We are here to help as much as possible. These inspection requirements are not coming from us.  Contact us if you have any questions.      2815 Casco Point Road, Wayzata, Minnesota November 18, 2022 Page | 7    DESIGN PROVISIONS: 1.  REFER TO WOOD RETAINING WALL INDUSTRY GUIDELINES.   2.  SEE PRODUCT MANUFACTURER INSTALLATION RECOMMENDATIONS FOR CONSTRUCTION SEQUENCE  AND INSTALLATION NOTES.  3.  THE DESIGN OF THIS RETAINING WALL SYSTEM WAS BASED UPON THE EFFECTIVE STRENGTH  PARAMETERS SHOWN ON THE “SOIL VALUES” TABLE. UNLESS OTHEWISE NOTED, NO FORMAL SOIL  INFORMATION WAS PROVIDED BY THE OWNER OR OWNER’S REPRESENTATIVE. IF SOIL CONDITIONS  VARY AT TIME OF CONSTRUCTION, WALL ENGINEER MUST BE CONTACTED TO DETERMINE IF A REVISED  DESIGN IS NEEDED.  4. THE WALL DESIGN WAS BASED ON THE INFORMATION NOTED IN THE LETTER ABOVE.  5.  REFER TO WALL CALCULATIONS FOR BEARING CAPACITY REQUIREMENTS.  6. NO PRODUCT/MATERIAL SUBSTITUTIONS WILL BE ALLOWED WITHOUT PRIOR WRITTEN PERMISSION OF  CRITERIUM‐SCHIMNOWSKI ENGINEERS.   7. FINAL SITE GRADES AND ROOF DRAINS SHALL DIRECT RUNOFF AWAY FROM ANY RETAINING WALL(S).  UNLESS OTHERWISE NOTED, THE WALL(S) HAS NOT BEEN DESIGNED FOR HYDROSTATIC SURCHARGE  LOADING.   8.  THE WALL DESIGN WAS PERFORMED USING DESIGN GUIDELINES PRESENTED IN THE THIRD EDITION OF  THE "DESIGN MANUAL FOR SEGMENTAL RETAINING WALLS" PUBLISHED BY NCMA.  DESIGN LIMITATIONS:  1. THE INFORMATION PROVIDED WITHIN THESE DOCUMENTS IS FOR THE STRUCTURAL DESIGN OF THE  PROPOSED RETAINING WALL(S) ONLY.  THE REQUIREMENTS FOR AND/OR WORK RELATED TO  HANDRAILS, GUARDRAILS, OR OTHER LIFE/SAFETY ISSUES ARE EXCLUDED FROM THESE DOCUMENTS  AND ARE TO BE PROVIDED BY OTHERS.  2. SITE LAYOUT AND GRADING DESIGN ARE NOT INCLUDED IN WALL DESIGN SERVICES. THOSE SERVICE  ARE THE RESPONSIBILITY OF THE SITE CIVIL ENGINEER.  3. INTERNAL COMPOUND STABILITY (ICS) HAS BEEN CALCULATED FOR THIS PROJECT BY CRITERIUM.  HOWEVER, ICS IS NOT A SUBSTITUTE FOR A GLOBAL STABILITY ANALYSIS WHICH SHOULD BE  PERFORMED BY A QUALIFIED GEOTECHNICAL ENGINEER. ADDITIONAL SUBSURFACE EXPLORATION MAY  BE REQUIRED.  SUGGESTED QUALITY ASSURANCE REQUIREMENTS:  1. A QUALIFIED ENGINEER OR TECHNICIAN SHALL SUPERVISE THE WALL CONSTRUCTION TO VERIFY SITE  SOIL CONDITIONS.  IF THE PROJECT GEOTECHNICAL ENGINEER DOES NOT PERFORM THIS WORK, A  QUALIFIED GEOTECHNICAL ENGINEER/TECHNICIAN SHALL BE HIRED TO ASSURE THE RETAINING WALL IS  CONSTRUCTED WITH PROPER SOIL PARAMETERS.  2. A QUALIFIED GEOTECHNICAL ENGINEER SHALL BE CONSULTED TO VERIFY THE SUITABILITY OF DESIGN  ASSUMPTIONS MADE BY CRITERIUM.  3. WALL EXCAVATION AND SOILS SHALL BE INSPECTED FOR GROUNDWATER CONDITIONS. THE  GEOTECHNICAL ENGINEER SHALL DETERMINE ADDITIONAL DRAINAGE PROVISIONS TO BE  INCORORATED INTO THE WALL DESIGN.   4. THE WALL DESIGN ENGINEER SHALL BE HIRED TO PERFORM A PRE‐CONSTRUCTION SITE VISIT.  5. THE WALL DESIGN ENGINEER CAN BE HIRED FOR CONSTRUCTION OBSERVATION SERVICES.   6. THE WALL CONTRACTOR IS RESPONSIBLE FOR MAINTAINING QUALITY CONTROL FOR THE  CONSTRUCTION OF THE WALL IN ACCORDANCE WITH CONTRACT REQUIREMENTS.  7. SEE PROJECT CONTRACT DOCUMENTS FOR SPECIFIC DETAILS ON THE SCOPE OF WORK THAT WILL BE  PROVIDED BY ALL PARTIES.   2815 Casco Point Road, Wayzata, Minnesota November 18, 2022 Page | 8    T E R M S A N D C O N D I T I O N S - Effective Nov.10.2020 This design is expressly made subject to the following terms and conditions to which all persons that receive and rely thereon agree: 1. STANDARD OF SERVICE: Services performed by ENGINEER under this agreement shall be performed in a manner consistent with the skill and care ordinarily used by members of the engineering profession practicing under similar conditions at the time and in the locality the services are performed.  CLIENT recognizes that interpretations and recommendations of ENGINEER are based solely on the information available to the company.  ENGINEER will be responsible for those interpretations and recommendations, but shall not be responsible for the interpretation by others of the information developed.  Services provided reflect the professional judgment of ENGINEER, to the best of ENGINEER's knowledge, information, and belief as of the date hereof.  No other warranty or guarantee, express or implied, is made. 2. SCOPE OF SERVICE: Services performed by ENGINEER are expressly limited by the scope of services ENGINEER has been employed by CLIENT to perform. 3. TERMS OF PAYMENT: ENGINEER may require a retainer fee to be paid before commencing any project. Extended engagements may require interim invoicing on a weekly, monthly, or other basis. At the completion of the project, we will issue a final invoice. Payment of each invoice is due upon presentation. Failure to pay invoices within the allotted time period will constitute a breach of contract and may result in suspension of work until such time as all overdue payments are made in full. Should any suspension occur because of overdue payments, the time for contract completion, if any is stated, shall be extended by the period of the suspension. Invoiced balances remaining unpaid for thirty (30) days after the date of invoice may be charged a finance charge in the amount of ½ percent per month from the date of invoice. If an invoice remains unpaid and it becomes necessary, in the ENGINEERS’ opinion to initiate collection procedures, the CLIENT hereby agrees to pay all collection costs including, but not limited to, reasonable fees for attorneys retained by ENGINEER and court costs at our standard billing rate for time necessitated in court appearances or presentation of claim to the appropriate court jurisdiction. Exceptions to payment terms must be specified in writing. 4. OWNERSHIP OF DOCUMENTS: All reports, field data, field notes, calculations, estimates and other documents (‘reports’) prepared by Engineer, as instruments of service, shall remain the property of Engineer. CLIENT agrees that all reports furnished to CLIENT or his agents, which are not paid for, will be returned upon demand and will not be used by CLIENT for any purpose whatever. ENGINEER will retain all pertinent records relating to the services performed for a period of five years following submission of the report, during which period the records will be made available to CLIENT at all reasonable times. 5. COPIES OF DOCUMENTS: ENGINEER agrees to furnish CLIENT with an electronic copy of our report, drawings, or documents relating to the services performed. Hard copies, bound or unbound, may be provided upon request at charge of cost plus 10 percent, at ENGINEERS’s sole discretion. ENGINEER shall retain an electronic copy of the final documents in its files for a period of five years. 6. INSURANCE: ENGINEER represents and warrants that it is protected by Workers Compensation insurance and has such coverage under Public Liability and Property Damage insurance policies which ENGINEER deems adequate. Certificate for all such policies of insurance shall be provided to the CLIENT upon request in writing. ENGINEER shall not be responsible for any loss, damage or liability arising from any acts by CLIENT, its agents, staff and other consultants employed by it. 7. TERMINATION: This agreement may be terminated by either party by written notice. In the event of termination, ENGINEER shall be paid for services performed and expenses incurred up to the termination notice date. Neither CLIENT not ENGINEER may delegate, assign, sublet or transfer his/her duties or interest in this Agreement without the written consent of the other party. 8. LIMITATION OF LIABILITY: To the fullest extent permitted by law, CLIENT and ENGINEER (a) waive against each other, and the other's employees, officers, directors, agents, insurers, partners, and consultants, any and all claims for or entitlement to special, incidental, indirect, or consequential damages arising out of, resulting from, or in any way related to this report, (b) agree that ENGINEER’s total liability to CLIENT shall be limited to the total amount of compensation received by ENGINEER, (c) agree that CLIENT will defend, indemnify, and hold harmless ENGINEER from and against any claims, liabilities, actions, demands, losses, damages, costs and expenses sustained by any third-party not granted reliance on ENGINEER’s reports and services, (d) agree that any action arising out of or related to the services provided must be brought to ENGINEER’S attention no later than two (2) years after the date of the services, and (e) if an action is brought against the ENGINEER and the ENGINEER prevails, ENGINEER shall be entitled to recover costs and expenses, including reasonable attorneys' fees and costs. 9. FORCE MAJEURE: The engineer shall not be responsible or liable for any failure or delay in the performance of its obligations under this contract arising out of or resulting from any cause or event beyond our control, such as war, strike, crime, epidemic/pandemic, regulations and/or restriction imposed by any government agency, or other event. 2815 Casco Point Road, Wayzata, Minnesota November 18, 2022 Page | 4    Retaining Wall Completion Reports and  Construction Inspections    To:  Retaining wall contractors and/or all clients utilizing our services for retaining wall engineering.    From:  Paul Schimnowski, PE   Retaining Wall Engineer  Criterium‐Schimnowski Engineers (CSE)  Paul@CriteriumMN.com    Date: April 1, 2022     To help contractors and other interested parties navigate the changes that many cities and jurisdictions  are making regarding construction inspection requirements and final approval letters, we are making  the following recommendations:    1. Request that the City Building Official complete the Required Inspections of Retaining Walls  form, attached.     2. Notify your client of the potential for added cost depending on city/building official  requirements. Contact our office or refer to our service agreement for current fees.    3. Contact Criterium‐Schimnowski Engineers to schedule any required inspections. Adequate lead  time is required. Similar to typical City inspections, at least one week is recommended. We  cannot guarantee immediate service.    4. Take daily construction progress photos for your records and for submittal to Criterium‐ Schimnowski Engineers upon request.    5. Complete the Statement of Conformance for your records and for submittal to Criterium‐ Schimnowski Engineers upon request. Form attached.     If a Wall Completion Report (Post‐built Conformance Letter), is requested of CSE, we will require that  you provide construction photos and Statement of Conformance. In addition, CSE will need to perform  a site visit once final grading is completed. Without these three items, we are unable to comment on  the construction/conformance of the wall.     We are here to help as much as possible. These inspection requirements are not coming from us.  Contact us if you have any questions.      2815 Casco Point Road, Wayzata, Minnesota November 18, 2022 Page | 7    DESIGN PROVISIONS: 1.  REFER TO WOOD RETAINING WALL INDUSTRY GUIDELINES.   2.  SEE PRODUCT MANUFACTURER INSTALLATION RECOMMENDATIONS FOR CONSTRUCTION SEQUENCE  AND INSTALLATION NOTES.  3.  THE DESIGN OF THIS RETAINING WALL SYSTEM WAS BASED UPON THE EFFECTIVE STRENGTH  PARAMETERS SHOWN ON THE “SOIL VALUES” TABLE. UNLESS OTHEWISE NOTED, NO FORMAL SOIL  INFORMATION WAS PROVIDED BY THE OWNER OR OWNER’S REPRESENTATIVE. IF SOIL CONDITIONS  VARY AT TIME OF CONSTRUCTION, WALL ENGINEER MUST BE CONTACTED TO DETERMINE IF A REVISED  DESIGN IS NEEDED.  4. THE WALL DESIGN WAS BASED ON THE INFORMATION NOTED IN THE LETTER ABOVE.  5.  REFER TO WALL CALCULATIONS FOR BEARING CAPACITY REQUIREMENTS.  6. NO PRODUCT/MATERIAL SUBSTITUTIONS WILL BE ALLOWED WITHOUT PRIOR WRITTEN PERMISSION OF  CRITERIUM‐SCHIMNOWSKI ENGINEERS.   7. FINAL SITE GRADES AND ROOF DRAINS SHALL DIRECT RUNOFF AWAY FROM ANY RETAINING WALL(S).  UNLESS OTHERWISE NOTED, THE WALL(S) HAS NOT BEEN DESIGNED FOR HYDROSTATIC SURCHARGE  LOADING.   8.  THE WALL DESIGN WAS PERFORMED USING DESIGN GUIDELINES PRESENTED IN THE THIRD EDITION OF  THE "DESIGN MANUAL FOR SEGMENTAL RETAINING WALLS" PUBLISHED BY NCMA.  DESIGN LIMITATIONS:  1. THE INFORMATION PROVIDED WITHIN THESE DOCUMENTS IS FOR THE STRUCTURAL DESIGN OF THE  PROPOSED RETAINING WALL(S) ONLY.  THE REQUIREMENTS FOR AND/OR WORK RELATED TO  HANDRAILS, GUARDRAILS, OR OTHER LIFE/SAFETY ISSUES ARE EXCLUDED FROM THESE DOCUMENTS  AND ARE TO BE PROVIDED BY OTHERS.  2. SITE LAYOUT AND GRADING DESIGN ARE NOT INCLUDED IN WALL DESIGN SERVICES. THOSE SERVICE  ARE THE RESPONSIBILITY OF THE SITE CIVIL ENGINEER.  3. INTERNAL COMPOUND STABILITY (ICS) HAS BEEN CALCULATED FOR THIS PROJECT BY CRITERIUM.  HOWEVER, ICS IS NOT A SUBSTITUTE FOR A GLOBAL STABILITY ANALYSIS WHICH SHOULD BE  PERFORMED BY A QUALIFIED GEOTECHNICAL ENGINEER. ADDITIONAL SUBSURFACE EXPLORATION MAY  BE REQUIRED.  SUGGESTED QUALITY ASSURANCE REQUIREMENTS:  1. A QUALIFIED ENGINEER OR TECHNICIAN SHALL SUPERVISE THE WALL CONSTRUCTION TO VERIFY SITE  SOIL CONDITIONS.  IF THE PROJECT GEOTECHNICAL ENGINEER DOES NOT PERFORM THIS WORK, A  QUALIFIED GEOTECHNICAL ENGINEER/TECHNICIAN SHALL BE HIRED TO ASSURE THE RETAINING WALL IS  CONSTRUCTED WITH PROPER SOIL PARAMETERS.  2. A QUALIFIED GEOTECHNICAL ENGINEER SHALL BE CONSULTED TO VERIFY THE SUITABILITY OF DESIGN  ASSUMPTIONS MADE BY CRITERIUM.  3. WALL EXCAVATION AND SOILS SHALL BE INSPECTED FOR GROUNDWATER CONDITIONS. THE  GEOTECHNICAL ENGINEER SHALL DETERMINE ADDITIONAL DRAINAGE PROVISIONS TO BE  INCORORATED INTO THE WALL DESIGN.   4. THE WALL DESIGN ENGINEER SHALL BE HIRED TO PERFORM A PRE‐CONSTRUCTION SITE VISIT.  5. THE WALL DESIGN ENGINEER CAN BE HIRED FOR CONSTRUCTION OBSERVATION SERVICES.   6. THE WALL CONTRACTOR IS RESPONSIBLE FOR MAINTAINING QUALITY CONTROL FOR THE  CONSTRUCTION OF THE WALL IN ACCORDANCE WITH CONTRACT REQUIREMENTS.  7. SEE PROJECT CONTRACT DOCUMENTS FOR SPECIFIC DETAILS ON THE SCOPE OF WORK THAT WILL BE  PROVIDED BY ALL PARTIES.   2815 Casco Point Road, Wayzata, Minnesota November 18, 2022 Page | 8    T E R M S A N D C O N D I T I O N S - Effective Nov.10.2020 This design is expressly made subject to the following terms and conditions to which all persons that receive and rely thereon agree: 1. STANDARD OF SERVICE: Services performed by ENGINEER under this agreement shall be performed in a manner consistent with the skill and care ordinarily used by members of the engineering profession practicing under similar conditions at the time and in the locality the services are performed.  CLIENT recognizes that interpretations and recommendations of ENGINEER are based solely on the information available to the company.  ENGINEER will be responsible for those interpretations and recommendations, but shall not be responsible for the interpretation by others of the information developed.  Services provided reflect the professional judgment of ENGINEER, to the best of ENGINEER's knowledge, information, and belief as of the date hereof.  No other warranty or guarantee, express or implied, is made. 2. SCOPE OF SERVICE: Services performed by ENGINEER are expressly limited by the scope of services ENGINEER has been employed by CLIENT to perform. 3. TERMS OF PAYMENT: ENGINEER may require a retainer fee to be paid before commencing any project. Extended engagements may require interim invoicing on a weekly, monthly, or other basis. At the completion of the project, we will issue a final invoice. Payment of each invoice is due upon presentation. Failure to pay invoices within the allotted time period will constitute a breach of contract and may result in suspension of work until such time as all overdue payments are made in full. Should any suspension occur because of overdue payments, the time for contract completion, if any is stated, shall be extended by the period of the suspension. Invoiced balances remaining unpaid for thirty (30) days after the date of invoice may be charged a finance charge in the amount of ½ percent per month from the date of invoice. If an invoice remains unpaid and it becomes necessary, in the ENGINEERS’ opinion to initiate collection procedures, the CLIENT hereby agrees to pay all collection costs including, but not limited to, reasonable fees for attorneys retained by ENGINEER and court costs at our standard billing rate for time necessitated in court appearances or presentation of claim to the appropriate court jurisdiction. Exceptions to payment terms must be specified in writing. 4. OWNERSHIP OF DOCUMENTS: All reports, field data, field notes, calculations, estimates and other documents (‘reports’) prepared by Engineer, as instruments of service, shall remain the property of Engineer. CLIENT agrees that all reports furnished to CLIENT or his agents, which are not paid for, will be returned upon demand and will not be used by CLIENT for any purpose whatever. ENGINEER will retain all pertinent records relating to the services performed for a period of five years following submission of the report, during which period the records will be made available to CLIENT at all reasonable times. 5. COPIES OF DOCUMENTS: ENGINEER agrees to furnish CLIENT with an electronic copy of our report, drawings, or documents relating to the services performed. Hard copies, bound or unbound, may be provided upon request at charge of cost plus 10 percent, at ENGINEERS’s sole discretion. ENGINEER shall retain an electronic copy of the final documents in its files for a period of five years. 6. INSURANCE: ENGINEER represents and warrants that it is protected by Workers Compensation insurance and has such coverage under Public Liability and Property Damage insurance policies which ENGINEER deems adequate. Certificate for all such policies of insurance shall be provided to the CLIENT upon request in writing. ENGINEER shall not be responsible for any loss, damage or liability arising from any acts by CLIENT, its agents, staff and other consultants employed by it. 7. TERMINATION: This agreement may be terminated by either party by written notice. In the event of termination, ENGINEER shall be paid for services performed and expenses incurred up to the termination notice date. Neither CLIENT not ENGINEER may delegate, assign, sublet or transfer his/her duties or interest in this Agreement without the written consent of the other party. 8. LIMITATION OF LIABILITY: To the fullest extent permitted by law, CLIENT and ENGINEER (a) waive against each other, and the other's employees, officers, directors, agents, insurers, partners, and consultants, any and all claims for or entitlement to special, incidental, indirect, or consequential damages arising out of, resulting from, or in any way related to this report, (b) agree that ENGINEER’s total liability to CLIENT shall be limited to the total amount of compensation received by ENGINEER, (c) agree that CLIENT will defend, indemnify, and hold harmless ENGINEER from and against any claims, liabilities, actions, demands, losses, damages, costs and expenses sustained by any third-party not granted reliance on ENGINEER’s reports and services, (d) agree that any action arising out of or related to the services provided must be brought to ENGINEER’S attention no later than two (2) years after the date of the services, and (e) if an action is brought against the ENGINEER and the ENGINEER prevails, ENGINEER shall be entitled to recover costs and expenses, including reasonable attorneys' fees and costs. 9. FORCE MAJEURE: The engineer shall not be responsible or liable for any failure or delay in the performance of its obligations under this contract arising out of or resulting from any cause or event beyond our control, such as war, strike, crime, epidemic/pandemic, regulations and/or restriction imposed by any government agency, or other event.           August 24, 2022 Josh Peterson Valdes Lawn Care & Snow Removal Submitted by email: jpeterson@valdeslawn.com RE: Segmental Retaining Wall Typical Section Project Location: 2815 Casco Point Road, Wayzata, Minnesota Project No. 22-6589 Dear Mr. Peterson: This letter includes important details regarding the attached design typical engineered sections for the timber retaining walls at the above location. This design is based on wall layout information provided by you in an email on August 23, 2022, including: a Certificate of Survey prepared by Gronberg and Associates dated May 18, 2022; measurements of the wall heights and face to face distances; and photos of the existing conditions. The attached typical section should be referenced for construction details. Special note should be made of the wall embedment depth and the tieback/header and deadmen lengths. Refer to local building codes, industry specifications, and American Wood Preservers Association for installation information and details. The design of the wall system assumes the following:  Wall location: Replacement of the existing tiered timber walls in the same configuration  Wall height(s): 7-feet to 2-feet as noted on the attached sketch, with minimum face-to-face distance between the walls (maximum exposed heights)  Minimum embedment depth = 6” min., or as noted  Soil conditions: Silty/Clayey Sand, friction angle = 30.0 degrees, unit weight of 125.0 lb/ft3  Required minimum soil bearing capacity = 1500 psf  Surcharge load at top of walls: Decks as noted  10:1 maximum slope at top and bottom of walls  Wall Type: 6” Treated Timber  Connections: 3/8” galvanized or treated spikes  Drainage pipe: Required These walls have not been designed for ground water surcharge loads. Direct all surface and groundwater drainage away from the walls. Methods to do so include but are not limited to the following: drainage swale, site grading, retention ponds, etc. Details of water control are left to the wall contractor or the site civil engineer. Please contact Criterium-Schimnowski to provide additional site assessment services if desired. The wall design was performed using the design guidelines presented in timber retaining wall industry guidelines and recommendations. Additional information requested by Criterium-Schimnowski Engineers but not available includes: geotechnical site survey and soil data. If soil conditions, proposed wall layouts, or other design parameters vary from that assumed, a revised analysis may be needed. Please call me if you have any questions or need more information. 2815 Casco Point Road, Wayzata, Minnesota August 24, 2022 Page | 2    This design has been prepared in strict confidence with you as our client. Reliance upon our design by other parties is strictly prohibited. If you choose to share our design, you agree to indemnify, defend and hold harmless the Engineer from any third-party action. No reproduction or re-use is permitted without express written consent. Further, we will not release this design to anyone without your permission. Thank you. Sincerely, Paul Schimnowski, P.E. MN #40126 I hereby certify that this plan, specification, or report was prepared by me or under my direct supervision and that I am a duly Licensed Professional Engineer under the laws of the State of Minnesota. Paul Schimnowski, P.E.  Date: August 24, 2022 License #: 40126 (MN) 2815 Casco Point Road, Wayzata, Minnesota August 24, 2022 Page | 3    Retaining Wall Completion Reports and  Construction Inspections    To:  Retaining wall contractors and/or all clients utilizing our services for retaining wall engineering.    From:  Paul Schimnowski, PE   Retaining Wall Engineer  Criterium‐Schimnowski Engineers (CSE)  Paul@CriteriumMN.com    Date: April 1, 2022     To help contractors and other interested parties navigate the changes that many cities and jurisdictions  are making regarding construction inspection requirements and final approval letters, we are making  the following recommendations:    1. Request that the City Building Official complete the Required Inspections of Retaining Walls  form, attached.     2. Notify your client of the potential for added cost depending on city/building official  requirements. Contact our office or refer to our service agreement for current fees.    3. Contact Criterium‐Schimnowski Engineers to schedule any required inspections. Adequate lead  time is required. Similar to typical City inspections, at least one week is recommended. We  cannot guarantee immediate service.    4. Take daily construction progress photos for your records and for submittal to Criterium‐ Schimnowski Engineers upon request.    5. Complete the Statement of Conformance for your records and for submittal to Criterium‐ Schimnowski Engineers upon request. Form attached.     If a Wall Completion Report (Post‐built Conformance Letter), is requested of CSE, we will require that  you provide construction photos and Statement of Conformance. In addition, CSE will need to perform  a site visit once final grading is completed. Without these three items, we are unable to comment on  the construction/conformance of the wall.     We are here to help as much as possible. These inspection requirements are not coming from us.  Contact us if you have any questions.      2815 Casco Point Road, Wayzata, Minnesota August 24, 2022 Page | 6    DESIGN PROVISIONS: 1.  REFER TO WOOD RETAINING WALL INDUSTRY GUIDELINES.   2.  SEE PRODUCT MANUFACTURER INSTALLATION RECOMMENDATIONS FOR CONSTRUCTION SEQUENCE  AND INSTALLATION NOTES.  3.  THE DESIGN OF THIS RETAINING WALL SYSTEM WAS BASED UPON THE EFFECTIVE STRENGTH  PARAMETERS SHOWN ON THE “SOIL VALUES” TABLE. UNLESS OTHEWISE NOTED, NO FORMAL SOIL  INFORMATION WAS PROVIDED BY THE OWNER OR OWNER’S REPRESENTATIVE. IF SOIL CONDITIONS  VARY AT TIME OF CONSTRUCTION, WALL ENGINEER MUST BE CONTACTED TO DETERMINE IF A REVISED  DESIGN IS NEEDED.  4. THE WALL DESIGN WAS BASED ON THE INFORMATION NOTED IN THE LETTER ABOVE.  5.  REFER TO WALL CALCULATIONS FOR BEARING CAPACITY REQUIREMENTS.  6. NO PRODUCT/MATERIAL SUBSTITUTIONS WILL BE ALLOWED WITHOUT PRIOR WRITTEN PERMISSION OF  CRITERIUM‐SCHIMNOWSKI ENGINEERS.   7. FINAL SITE GRADES AND ROOF DRAINS SHALL DIRECT RUNOFF AWAY FROM ANY RETAINING WALL(S).  UNLESS OTHERWISE NOTED, THE WALL(S) HAS NOT BEEN DESIGNED FOR HYDROSTATIC SURCHARGE  LOADING.   8.  THE WALL DESIGN WAS PERFORMED USING DESIGN GUIDELINES PRESENTED IN THE THIRD EDITION OF  THE "DESIGN MANUAL FOR SEGMENTAL RETAINING WALLS" PUBLISHED BY NCMA.  DESIGN LIMITATIONS:  1. THE INFORMATION PROVIDED WITHIN THESE DOCUMENTS IS FOR THE STRUCTURAL DESIGN OF THE  PROPOSED RETAINING WALL(S) ONLY.  THE REQUIREMENTS FOR AND/OR WORK RELATED TO  HANDRAILS, GUARDRAILS, OR OTHER LIFE/SAFETY ISSUES ARE EXCLUDED FROM THESE DOCUMENTS  AND ARE TO BE PROVIDED BY OTHERS.  2. SITE LAYOUT AND GRADING DESIGN ARE NOT INCLUDED IN WALL DESIGN SERVICES. THOSE SERVICE  ARE THE RESPONSIBILITY OF THE SITE CIVIL ENGINEER.  3. INTERNAL COMPOUND STABILITY (ICS) HAS BEEN CALCULATED FOR THIS PROJECT BY CRITERIUM.  HOWEVER, ICS IS NOT A SUBSTITUTE FOR A GLOBAL STABILITY ANALYSIS WHICH SHOULD BE  PERFORMED BY A QUALIFIED GEOTECHNICAL ENGINEER. ADDITIONAL SUBSURFACE EXPLORATION MAY  BE REQUIRED.  SUGGESTED QUALITY ASSURANCE REQUIREMENTS:  1. A QUALIFIED ENGINEER OR TECHNICIAN SHALL SUPERVISE THE WALL CONSTRUCTION TO VERIFY SITE  SOIL CONDITIONS.  IF THE PROJECT GEOTECHNICAL ENGINEER DOES NOT PERFORM THIS WORK, A  QUALIFIED GEOTECHNICAL ENGINEER/TECHNICIAN SHALL BE HIRED TO ASSURE THE RETAINING WALL IS  CONSTRUCTED WITH PROPER SOIL PARAMETERS.  2. A QUALIFIED GEOTECHNICAL ENGINEER SHALL BE CONSULTED TO VERIFY THE SUITABILITY OF DESIGN  ASSUMPTIONS MADE BY CRITERIUM.  3. WALL EXCAVATION AND SOILS SHALL BE INSPECTED FOR GROUNDWATER CONDITIONS. THE  GEOTECHNICAL ENGINEER SHALL DETERMINE ADDITIONAL DRAINAGE PROVISIONS TO BE  INCORORATED INTO THE WALL DESIGN.   4. THE WALL DESIGN ENGINEER SHALL BE HIRED TO PERFORM A PRE‐CONSTRUCTION SITE VISIT.  5. THE WALL DESIGN ENGINEER CAN BE HIRED FOR CONSTRUCTION OBSERVATION SERVICES.   6. THE WALL CONTRACTOR IS RESPONSIBLE FOR MAINTAINING QUALITY CONTROL FOR THE  CONSTRUCTION OF THE WALL IN ACCORDANCE WITH CONTRACT REQUIREMENTS.  7. SEE PROJECT CONTRACT DOCUMENTS FOR SPECIFIC DETAILS ON THE SCOPE OF WORK THAT WILL BE  PROVIDED BY ALL PARTIES.   2815 Casco Point Road, Wayzata, Minnesota August 24, 2022 Page | 7    T E R M S A N D C O N D I T I O N S - Effective Nov.10.2020 This design is expressly made subject to the following terms and conditions to which all persons that receive and rely thereon agree: 1. STANDARD OF SERVICE: Services performed by ENGINEER under this agreement shall be performed in a manner consistent with the skill and care ordinarily used by members of the engineering profession practicing under similar conditions at the time and in the locality the services are performed.  CLIENT recognizes that interpretations and recommendations of ENGINEER are based solely on the information available to the company.  ENGINEER will be responsible for those interpretations and recommendations, but shall not be responsible for the interpretation by others of the information developed.  Services provided reflect the professional judgment of ENGINEER, to the best of ENGINEER's knowledge, information, and belief as of the date hereof.  No other warranty or guarantee, express or implied, is made. 2. SCOPE OF SERVICE: Services performed by ENGINEER are expressly limited by the scope of services ENGINEER has been employed by CLIENT to perform. 3. TERMS OF PAYMENT: ENGINEER may require a retainer fee to be paid before commencing any project. Extended engagements may require interim invoicing on a weekly, monthly, or other basis. At the completion of the project, we will issue a final invoice. Payment of each invoice is due upon presentation. Failure to pay invoices within the allotted time period will constitute a breach of contract and may result in suspension of work until such time as all overdue payments are made in full. Should any suspension occur because of overdue payments, the time for contract completion, if any is stated, shall be extended by the period of the suspension. Invoiced balances remaining unpaid for thirty (30) days after the date of invoice may be charged a finance charge in the amount of ½ percent per month from the date of invoice. If an invoice remains unpaid and it becomes necessary, in the ENGINEERS’ opinion to initiate collection procedures, the CLIENT hereby agrees to pay all collection costs including, but not limited to, reasonable fees for attorneys retained by ENGINEER and court costs at our standard billing rate for time necessitated in court appearances or presentation of claim to the appropriate court jurisdiction. Exceptions to payment terms must be specified in writing. 4. OWNERSHIP OF DOCUMENTS: All reports, field data, field notes, calculations, estimates and other documents (‘reports’) prepared by Engineer, as instruments of service, shall remain the property of Engineer. CLIENT agrees that all reports furnished to CLIENT or his agents, which are not paid for, will be returned upon demand and will not be used by CLIENT for any purpose whatever. ENGINEER will retain all pertinent records relating to the services performed for a period of five years following submission of the report, during which period the records will be made available to CLIENT at all reasonable times. 5. COPIES OF DOCUMENTS: ENGINEER agrees to furnish CLIENT with an electronic copy of our report, drawings, or documents relating to the services performed. Hard copies, bound or unbound, may be provided upon request at charge of cost plus 10 percent, at ENGINEERS’s sole discretion. ENGINEER shall retain an electronic copy of the final documents in its files for a period of five years. 6. INSURANCE: ENGINEER represents and warrants that it is protected by Workers Compensation insurance and has such coverage under Public Liability and Property Damage insurance policies which ENGINEER deems adequate. Certificate for all such policies of insurance shall be provided to the CLIENT upon request in writing. ENGINEER shall not be responsible for any loss, damage or liability arising from any acts by CLIENT, its agents, staff and other consultants employed by it. 7. TERMINATION: This agreement may be terminated by either party by written notice. In the event of termination, ENGINEER shall be paid for services performed and expenses incurred up to the termination notice date. Neither CLIENT not ENGINEER may delegate, assign, sublet or transfer his/her duties or interest in this Agreement without the written consent of the other party. 8. LIMITATION OF LIABILITY: To the fullest extent permitted by law, CLIENT and ENGINEER (a) waive against each other, and the other's employees, officers, directors, agents, insurers, partners, and consultants, any and all claims for or entitlement to special, incidental, indirect, or consequential damages arising out of, resulting from, or in any way related to this report, (b) agree that ENGINEER’s total liability to CLIENT shall be limited to the total amount of compensation received by ENGINEER, (c) agree that CLIENT will defend, indemnify, and hold harmless ENGINEER from and against any claims, liabilities, actions, demands, losses, damages, costs and expenses sustained by any third-party not granted reliance on ENGINEER’s reports and services, (d) agree that any action arising out of or related to the services provided must be brought to ENGINEER’S attention no later than two (2) years after the date of the services, and (e) if an action is brought against the ENGINEER and the ENGINEER prevails, ENGINEER shall be entitled to recover costs and expenses, including reasonable attorneys' fees and costs. 9. FORCE MAJEURE: The engineer shall not be responsible or liable for any failure or delay in the performance of its obligations under this contract arising out of or resulting from any cause or event beyond our control, such as war, strike, crime, epidemic/pandemic, regulations and/or restriction imposed by any government agency, or other event.