State of California • Natural Resources Agency Gavin Newsom, Governor
DEPARTMENT OF PARKS AND RECREATION
OFFICE OF HISTORIC PRESERVATION
Julianne Polanco, State Historic Preservation Officer
1725 23rd Street, Suite 100, Sacramento, CA 95816-7100 Telephone: (916) 445-7000 FAX: (916) 445-7053 [email protected] www.ohp.parks.ca.gov
Armando Quintero, Director
June 26, 2026 Refer To: FHWA-CATRA_2025_0311_001
Submitted Via Electronic Mail
Julia Prince-Buitenhuys
Section 106 Coordinator
Cultural Studies Office
Caltrans Division of Environmental Analysis
P.O. Box 942873, MS-27
Sacramento, CA 94273-0001
Re: Final Memorandum of Agreement for the Silverado Trail/Coombsville Road 5-Way Intersection Project, Napa, Napa County, California
Dear Ms. Prince-Buitenhuys:
Accompanying this letter is a signed copy of the Memorandum Of Agreement Between The California Department of Transportation and the California State Historic Preservation Officer Regarding the Silverado Trail/Coombsville 5-Way Intersection Project In Napa County, California.
If you have any questions or comments, please contact State Historian II Tristan Tozer at [email protected].
Sincerely,
Julianne Polanco
State Historic Preservation Officer
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1 MEMORANDUM OF AGREEMENT BETWEEN THE CALIFORNIA DEPARTMENT OF TRANSPORTATION AND THE CALIFORNIA STATE HISTORIC PRESERVATION OFFICER REGARDING THE SILVERADO TRAIL/COOMBSVILLE ROAD 5-WAY INTERSECTION PROJECT IN NAPA COUNTY, CALIFORNIA WHEREAS, the Federal Highway Administration (FHWA) has assigned and California Department of Transportation (Caltrans) has assumed FHWA responsibility for environmental review, consultation, and coordination under the provisions of the Memorandum of Understanding (MOU) between the Federal Highway Administration and the California Department of Transportation Concerning the State of Participation in the Surface Transportation Project Delivery Program Pursuant to 23 U.S.C. 327, which became effective on May 27, 2022, and applies to this undertaking; and WHEREAS, pursuant to the 2024 (Section 106 PA), Caltrans is deemed to be a federal agency for all highway-aid projects it has to the Caltrans Division of Environmental Analysis (DEA) Chief for the purpose of compliance with Title 36 Code of Federal Regulations Part 800 (36 CFR § 800), the regulation that implements Section 106 of the National Historic Preservation Act (NHPA) of 1966 (54 U.S.C. 470f), as amended and is responsible for oversight of District environmental responsibilities. To provide for effective compliance, day-to-day responsibilities, and coordination of the Section 106 process are further delegated to the DEA Cultural Studies Office (CSO) Chief; and WHEREAS, Caltrans and the City of Napa propose to implement the Silverado Trail/Coombsville Road 5-Way Intersection Project (Undertaking) on State Route 121 in the City of Napa in Napa County, California, to modify the intersection of State Route 121 (Silverado Trail), East Third Avenue, and Coombsville Road, as described in Attachment A; and WHEREAS, Caltrans has consulted with the State Historic Preservation Officer preparing this memorandum of agreement (MOA) pursuant to Stipulation XI of the Section 106 PA and 36 CFR Section 800.5(b) and 800.6, and will file a copy of this MOA with the Advisory Council on Historic Preservation (ACHP) pursuant to Stipulation X.C.3 of the Section 106 PA; and
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2 WHEREAS, the Undertaking's Area of Potential Effects (APE) includes public right of way, staging areas, temporary construction easements, and areas where visual or audible changes could occur as a result of the Undertaking. The APE also includes the entirety of the East Napa Historic District, the entire property at 801 Silverado Trail, and a part of which will be acquired permanently and demolished, and 36 Coombsville Road, a portion of which will be acquired permanently for the construction of a retaining wall; and WHEREAS, Caltrans has determined that the Undertaking will have an adverse effect on the East Napa Historic District, a property considered eligible for inclusion in the National Register of Historic Places (NRHP) for this project only under Criterion A as a surviving area of Italian settlement and working-class residential development in Napa, California, and under Criterion C as a good example of a working-class neighborhood characterized by modest vernacular bungalows and cottages with high integrity, and therefore the district is a historic property as defined at 36 CFR § 800.16(1)(1); and WHEREAS, Caltrans has thoroughly considered alternatives to the Undertaking and has determined, in consultation with the SHPO, that the Undertakingadverse effects cannot be avoided, and that implementation of the treatments adverse effects on the historic property; and WHEREAS, Caltrans has consulted with the City of Napa Cultural Heritage Commission, Napa County Historical Society, Napa County Landmarks, Napa Service, and the Napa County Genealogical Society (consulting parties) regarding the Undertaking and its effects on historic properties, and will continue to consult with them and afford them, should they so desire, the opportunity to actively participate in the implementation of the Undertaking itself and this MOA; and WHEREAS, Caltrans has consulted with representatives from Yocha Dehe Wintun Nation Muwekma Ohlone Tribe, Mishewal-Wappo Tribe of Alexander Valley, Cachil Dehe Band of Wintun Indians of the Colusa Indian Community, Guidiville Indian Rancheria, Pinoleville Pomo Nation, Cortina Rancheria Kletsel Dehe Band of Wintun Indians, and Grindstone Rancheria of Wintun-Wailaki regarding the effects of the Undertaking. The Yocha Dehe Wintun Nation and the Mishewal-Wappo Tribe of Alexander Valley (tribes) requested continued consultation on the Undertaking; and WHEREAS, Caltrans District 4 has participated in the consultation, has a responsibility to fulfill the terms of this MOA, and is participating as an Invited Signatory; and
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3 WHEREAS, The City of Napa has participated in the consultation, has a responsibility to fulfill the terms of this MOA, and is participating as an Invited Signatory; and WHEREAS, Napa County Landmarks has participated in the consultation and is partaking as a Concurring Party to this MOA; and NOW, THEREFORE, Caltrans and the SHPO agree that if the Undertaking proceeds, the Undertaking shall be implemented in accordance with the following stipulations in order to take into account the effects of the Undertaking on historic properties, and further agrees that these stipulations shall govern the Undertaking and all of its parts until this MOA expires or is terminated.
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4 STIPULATIONS Caltrans and the City of Napa shall ensure that the following stipulations are carried out: I. AREA OF POTENTIAL EFFECTS A. If modifications to the Undertaking subsequent to the execution of this MOA necessitate revision of the APE, the City of Napa will notify Caltrans District 4. Caltrans District 4 will notify the MOA parties of the subject revisions as soon as it is feasible and request comment within thirty (30) days. The City of Napa, in collaboration with Caltrans District 4, will take all comments into account and submit a final map of the revisions, consistent with the requirements of Stipulation VIII.A and Appendix 3 of the Section 106 PA, no later than 30 days following the end of the comment period. The City of Napa will not conduct any additional studies necessitated by the revisions prior to distribution of the revised APE Map. Amendment of the APE will not require an amendment to the MOA unless the change alters the terms of this agreement. Any amendments to the APE that necessitate amendments to the MOA shall follow Stipulation V.D of this MOA. B. Any additional required supplemental identification, evaluation, and effects analysis efforts necessitated due to changes to the APE will be undertaken consistent with the requirements of the Section 106 PA. II. TREATMENT OF HISTORIC PROPERTIES Caltrans and the City of Napa shall ensure that the following avoidance and minimization conditions are completed and adverse effects of the Undertaking on the East Napa Historic District are resolved through the implementation of the following measures: A. EVALUATION OF THE EAST NAPA HISTORIC DISTRICT FOR ELIGIBILITY TO THE NATIONAL REGISTER OF HISTORIC PLACES Prior to completion construction, Caltrans District 4 and the City of Napa will conduct an evaluation, pursuant to NRHP criteria, of the East Napa Historic District to determine if the property retains sufficient integrity to convey historic significance and if it remains eligible for listing in the NRHP. 1. The City of Napa will submit drafts of the evaluation to Caltrans District 4 for review and approval, which approval shall not be unreasonably
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5 withheld, conditioned, or delayed. 2. Upon approval, Caltrans District 4 shall submit the evaluation to the SHPO for concurrence pursuant to the Section 106 PA Stipulation VIII.C.6. B. 801 SILVERADO TRAIL ARCHITECTURAL SALVAGE 1. After the City of Napa takes ownership of the property at 801 Silverado Trail, and prior to construction, the City of Napa and Caltrans District 4 will coordinate with Napa County Landmarks to alert the local preservation community about salvaging components of the building at 801 Silverado Trail. Interested parties may remove and take ownership of salvage components at their sole cost and risk, subject to City Approval. Caltrans District 4 and the City of Napa will document good faith efforts to identify parties for salvaging components and record their consultation efforts. 2. If no parties salvage components prior to going to construction, the City of Napa will notify Caltrans District 4 and provide evidence of consultation efforts. Caltrans District 4 shall notify CSO and the SHPO within 30 days of determining that the efforts were sufficient and provide the evidence of consultation efforts, and this stipulation shall be deemed to have been met. 3. Caltrans District 4 will notify the SHPO within 30 days of the completion of all salvage activities and the outcomes of the architectural salvage efforts. 4. Nothing in this stipulation obligates the City to acquire 801 Silverado Trail by any date certain, to permit entry onto City-owned property absent a separate written agreement, or to accept liability for the acts or omissions of salvage participants, contractors, consultants, or volunteers. C. WAYFINDER SIGNAGE Caltrans District 4 shall ensure that the City of Napa will develop informational sign(s) that will identify the East Napa Historic District. 1. Sign number, locations, material, design and content will be determined by Caltrans District 4 and the City of Napa, in collaboration with the tribes, consulting parties, and Concurring Parties. The City of Napa will fund the design, fabrication, installation, and maintenance of the signs. 2. The City of Napa will submit a draft copy of the signage design and content to Caltrans District 4 for review and approval. The City of Napa will take all comments into account in revising the documents. After approval, Caltrans District 4 will submit a draft to the Signatories.
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6 3. The Signatories will have thirty (30) days to review and comment on the design. Caltrans District 4 and the City of Napa will take any comments into account in revising the draft signage design and content and will provide the Signatories with written documentation indicating whether and how the signs will be modified in accordance with any comments received. Objections will be resolved using the process outlined in Stipulation V.C of this MOA. 4. The City of Napa shall ensure their installation prior to the termination of this MOA. The City of Napa will notify the Signatories upon completion of the installation, pursuant to Stipulation V.F of this MOA. 5. If, after initial installation and within the duration of this MOA, the City determines the need to relocate any sign located on City property or City right of way if reasonably necessary for public safety, utility work, roadway operations, capital improvements, or compliance with law, the City of Napa will consult with Caltrans District 4 on the relocation. D. ORAL HISTORY OF EAST NAPA HISTORIC DISTRICT Caltrans District 4 shall ensure that the City of Napa, in collaboration with Napa County Landmarks, shall fund and develop an oral history of the East Napa Historic District. The oral history will expand on the history and early development of the neighborhood through interviews with current and former residents, if available, and local historians. 1. The oral history will be conducted by a professionally qualified oral historian/s using best practices, guidance, and tools available from the Oral History Association. The City may satisfy this requirement through qualified City Staff or qualified consultants. 2. The City of Napa will submit a draft to Caltrans District 4 for review and approval. 3. After completion, the City of Napa will develop digital formats within current oral history standards, and a written transcription. The final oral history will be distributed by the City of Napa to the following parties in the format requested: Napa County Landmarks, Napa County Library, Napa Historical Society, Order of Sons and Daughters of Italy in America (NapaLodge 2043), and Caltrans District 4. 4. After completion and receipt of the oral History, Caltrans District 4 shall distribute the digital formats and written transcription to CSO and the SHPO.
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7 E. INTERPRETIVE DISPLAY Caltrans District 4 shall ensure that the City of Napa will develop public interpretive material documenting the history of the East Napa Historic District by highlighting dates, events, and people important to the development of the district. 1. Interpretive products may include up to (2) signs or panels. 2. The City of Napa and Caltrans will coordinate with the tribes, consulting parties, and Concurring Parties to develop interpretive objectives to determine the design, fabrication, installation, and maintenance of signs and/or panels. Any sign or panel located on City property or in City right ADA compliance, engineering, maintenance access, and consistency with applicable City standards. 3. The City of Napa will submit drafts to Caltrans District 4 for review and approval. After Caltrans District 4 approval, Caltrans will submit the documents to the signatories. The signatories will have thirty (30) days to review and comment on the design. The City of Napa and Caltrans District 4 will take any comments into account in revising the draft display design and content and will provide the Signatories with written documentation indicating whether and how the displays will be modified in accordance with any comments received. Objections will be resolved using the process outlined in V.C. 4. The City of Napa will fund and ensure the signs or display installation in locations with suitable public access. Installation shall only be in locations that the City determines are suitable for public access and compliant with applicable City standards. Nothing herein obligates the City to approve installation in any particular location within City right of way. 5. Caltrans District 4 and the City of Napa will also outline the locations where such interpretation may be installed or take place and identify any interpretation that might be needed prior to and during construction to educate the community about measures undertaken or proposed to protect cultural resources. 6. The City of Napa shall ensure that all interpretive displays and materials are completed and installed prior to the termination of this MOA. The City of Napa will notify the Signatories upon completion, per Stipulation V.F of this MOA.
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8 7. If, after initial installation and within the duration of this MOA, the City determines the need to relocate any sign located on City property or City right of way if reasonably necessary for public safety, utility work, roadway operations, capital improvements, or compliance with law, the City of Napa will consult with Caltrans District 4 on the relocation. III. NATIVE AMERICAN CONSULTATION Caltrans has consulted with representatives from Yocha Dehe Wintun Nation Muwekma Ohlone Tribe, Mishewal-Wappo Tribe of Alexander Valley, Cachil Dehe Band of Wintun Indians of the Colusa Indian Community, Guidiville Indian Rancheria, Pinoleville Pomo Nation, Cortina Rancheria Kletsel Dehe Band of Wintun Indians, and Grindstone Rancheria of Wintun-Wailaki regarding the proposed Undertaking and its effects on historic properties, will continue to consult with them, and will afford them, should they desire, the opportunity to participate in the implementation of this MOA and the Undertaking. If other tribes or Native American groups who attach religious or cultural significance to historic properties that may be affected by this Undertaking are identified, Caltrans will invite them to participate as consulting parties as the Section 106 process moves forward. Caltrans shall remain responsible for all Section 106 consultation, as per dination under Stipulation II.C and II.E of this MOA shall not be construed as IV. DISCOVERIES AND UNANTICIPATED EFFECTS A. As legally mandated, human remains and related items discovered during the implementation of the terms of this Agreement and the Undertaking will be treated in accordance with the requirements of Health and Safety Code Section 7050.5(b). If pursuant to of Health and Safety Code Section 7050.5(c) the coroner determines that the human remains are or may be those of a Native American, then the discovery shall be treated in accordance with the provisions of Public Resources Code Sections 5097.98 (a)- (d). Caltrans shall ensure, to the extent possible, that the views of the Most Likely Descendent(s), as determined by the California Native American Heritage Commission, are taken into consideration when decisions are made about the disposition of Native American human remains and associated objects. B. If Caltrans determines, during implementation of the terms of this MOA or after construction of the Undertaking has commenced, that the Undertaking
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9 will affect a previously unidentified property that may be eligible for listing in the NRHP or affect a known historic property in an unanticipated manner, Caltrans will address the discovery or unanticipated effect in accordance with 36 CFR §800.13(b)(3). Caltrans at its discretion may hereunder assume any discovered property to be eligible for the NRHP in accordance with 36 CFR §800.13. V. ADMINSTRATIVE PROVISIONS A. STANDARDS 1. Definitions. The definitions provided at 36 CFR § 800.16 are applicable throughout this MOA. 2. Parties to this agreement are defined as follows: a. Signatory parties have the sole authority to execute, amend, or terminate the MOA. b. Invited Signatories have the authority to amend or terminate the MOA. c. Concurring Parties, signing the MOA do so to acknowledge their agreement or concurrence with the MOA, but have no legal authority under the MOA to terminate or amend this MOA. Concurring with the terms of this MOA does not constitute their agreement with the Undertaking. 3. Professional Qualifications. Caltrans will ensure that only individuals meeting the Standards (48 FR 44738-39) (PQS) as defined in Attachment 1 of the Section 106 PA, in the relevant field of study carry out or review appropriateness and quality of the actions and products required by Stipulations I, II, III, IV, and V in this MOA. However, nothing in this stipulation may be interpreted to preclude Caltrans or any agent or contractor thereof from using persons who do not meet the PQS as long as they are directly supervised by professionals who meet the standards. 4. Documentation Standards. Written documentation of activities prescribed by Stipulations I, II, III, and IV of this MOA shall conform to Secretary of the Historic Preservation (48 FR 44716- 44740) as well as to applicable standards and guidelines established by the SHPO. B. LIMITATIONS
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10 1. Limitations on City Obligations. Notwithstanding anything to the contrary in this MOA, the City shall be responsible only for those obligations expressly assigned to the City in this MOA, and no general duty to ensure overall MOA compliance is imposed on the City. 2. No Conveyance of Property Rights; Separate Agreements Required. Nothing in this MOA conveys any easement, license, right of entry, possessory interest, permit, or approval to use City property or City right of way. Any such rights must be granted, if at all, only by separate written agreement or permit acceptable to the City. C. CONFIDENTIALITY The MOA parties acknowledge that the historic properties covered by this MOA are subject to the provisions of § 304 of the NHPA and § 6254.10 of the California Government Code (Public Records Act), relating to the disclosure of archaeological site information and, having so acknowledged, will ensure that all actions and documentation prescribed by this MOA are consistent with said sections. D. RESOLVING OBJECTIONS 1. Should any party to this MOA object at any time in writing to the manner in which the terms of this MOA are implemented, to any action carried out or proposed with respect to implementation of the MOA (other than the Undertaking itself), or to any documentation prepared in accordance with and subject to the terms of this MOA, Caltrans shall immediately notify the other MOA parties of the objection, request their comments on the objection within fifteen (15) days following receipt of and proceed to consult with the objecting party for no more than thirty (30) days to resolve the objection. Caltrans will honor the request of the other parties to participate in the consultation and will take any comments provided by those parties into account. 2. If the objection is resolved during the 30-day consultation period, Caltrans may proceed with the disputed action in accordance with the terms of such resolution. 3. If, at the end of the 30-day consultation period, Caltrans determines that the objection cannot be resolved through such consultation, then Caltrans shall forward all documentation relevant to the objection to the e to the objection. The ACHP shall provide Caltrans with its advice on the resolution of the objection
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11 within thirty (30) days of receiving adequate documentation. Prior to reaching a final decision on the dispute, Caltrans shall prepare a written response that takes into account any timely advice or comments regarding the dispute from the ACHP, signatories, and Concurring Parties, and provide them with a copy of this written response. Caltrans will then proceed according to its final decision. 4. If the ACHP does not provide its advice regarding the dispute within the 30-day time period, Caltrans may make a final decision on the dispute and proceed accordingly. Prior to reaching such a final decision, Caltrans shall prepare a written response that takes into account any timely comments regarding the dispute from the signatories and Concurring Parties to the MOA and provide them to the ACHP with a copy of such written response. 5. Caltrans responsibility to carry out all other actions subject to the terms of this MOA that are not the subject of the dispute remain unchanged. 6. Caltrans may authorize any action subject to objection under this stipulation to proceed after the objection has been resolved in accordance with the terms of this stipulation. E. AMENDMENTS 1. Any Signatory Party to this MOA may propose that this MOA be amended, whereupon all Signatory Parties shall consult for no more than thirty (30) days to consider such amendment. Caltrans may extend this consultation period, if necessary. This MOA may be amended only upon written agreement of the Signatories and Invited Signatories. The amendment will be effective on the date a copy signed by all of the original signatories is filed by Caltrans with the ACHP. If the signatories cannot agree to appropriate terms to amend the MOA, any signatory may terminate the agreement in accordance with Stipulation V.E, below. 2. No party shall alter any attachment to this MOA, or other document that has been reviewed and commented on pursuant to this MOA, without first affording the parties to this MOA the opportunity to review the proposed change and determine whether it shall require that this MOA be amended. If one or more party determines that an amendment is needed, the parties to this MOA shall consult in accordance with Stipulation V.D.1 to consider such an amendment. Within thirty (30) days of revising any Attachment, Caltrans shall append any revised document to this MOA and share the final revised document with parties to this MOA.
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12 F. TERMINATION 1. If this MOA is not amended as provided for Section V.E, or if a Signatory or Invited Signatory proposes termination of this MOA for other reasons, the party proposing termination shall, in writing, notify the other MOA parties, explain the reasons for proposing termination, and consult with the other consulting parties for at least thirty (30) calendar days to seek alternatives to termination. Such consultation shall not be required if Caltrans proposes termination because the Undertaking no longer meets the definition in 36 CFR 800.16(y). 2. Should such consultation result in an agreement on an alternative to termination, the Signatory Parties shall proceed in accordance with the terms of that agreement. 3. Should such consultation fail, the Signatory Party proposing termination may terminate this MOA by promptly notifying the other MOA parties in writing. Termination hereunder shall render this MOA without further force or effect. 4. If this MOA is terminated hereunder, and if Caltrans determines that the Undertaking will nonetheless proceed, Caltrans shall comply with the requirements of Stipulations III through XI of the Section 106 PA, or request the comments of the ACHP, pursuant to 36 CFR 800. G. REPORTING REQUIRMENTS AND RELATED REVIEWS 1. Caltrans shall prepare an Annual Report documenting actions carried out pursuant to this MOA. The reporting period shall commence one year from the date of execution and is due annually on the anniversary of the date of execution. The Annual Report shall be distributed to all parties to this MOA. 2. The Annual Report shall address the following: any scheduling changes proposed, amendments to the MOA, status of treatment and mitigation activities, ongoing and completed activities, any uses that are affecting or may affect the ability of Caltrans to continue to meet the terms of the MOA, any disputes and objections received, and how they were resolved, and any additional parties who have become Signatories or Concurring Parties to this MOA in the past year. 3. Caltrans shall coordinate a meeting of the Signatories and Consulting Parties to be scheduled within ninety (90) calendar days of distribution of the Annual Report or another mutually agree upon date, to discuss
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13 activities carried out pursuant to this MOA during the preceding year and activities scheduled for the upcoming year. This meeting, should it be deemed unnecessary, may be cancelled by mutual consent of the Signatory Parties. 4. Where deliverables are subject to review and approval, such review shall not be unreasonably withheld, conditioned, or delayed H. DURATION OF THE MOA The duration of this MOA shall be no more than 5 (five) years following the date of the execution by the SHPO and Caltrans, or upon completion of the Undertaking (whichever comes first). If the terms are not satisfactorily fulfilled at that time, Caltrans shall consult with the signatories and Concurring Parties to extend it or reconsider its terms. Reconsideration may include continuation of the MOA as originally executed, amendment of the MOA, or termination. In the event of termination, Caltrans will comply with Stipulations III through XI of Section 106 PA if it determines that the Undertaking will proceed notwithstanding termination of this MOA. I. EFFECTIVE DATE This MOA will take effect on the date that it has been executed by Caltrans and the SHPO. EXECUTION of this MOA by Caltrans and the SHPO, its filing with the ACHP in accordance with 36 CFR §800.6(b)(1)(iv), and subsequent implementation of its terms, shall evidence, pursuant to 36CFR§800.6(c), that this MOA is an agreement with the ACHP for purposes of Section 110(l) of the NHPA, and shall further evidence that Caltrans has afforded the ACHP an opportunity to comment on the Undertaking and its effects on historic properties, and that Caltrans has taken into account the effects of the Undertaking on historic properties.
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MEMORANDUM OF AGREEMENTBETWEEN THE CALIFORNIA DEPARTMENT OF TRANSPORTATIONAND THE CALIFORNIA STATE HISTORIC PRESERVATION OFFICERREGARDING THE SILVERADO TRAIL/COOMBSVILLE ROAD 5-WAY INTERSECTION PROJECT IN NAPA COUNTY, CALIFORNIASIGNATORY:CALIFORNIA DEPARTMENT OF TRANSPORTATIONBy ________________Jeremy Ketchum, Chief DateDivision of Environmental Analysis
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MEMORANDUM OF AGREEMENT
BETWEEN THE CALIFORNIA DEPARTMENT OF TRANSPORTATION
AND THE CALIFORNIA STATE HISTORIC PRESERVATION OFFICER
REGARDING THE SILVERADO TRAIL/COOMBSVILLE ROAD 5-WAY
INTERSECTION PROJECT IN NAPA COUNTY, CALIFORNIA
SIGNATORY:
CALIFORNIA OFFICE OF HISTORIC PRESERVATION
By ________________
Julianne Polanco, SHPO Date
California Office of Historic Preservation
06/25/2026
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MEMORANDUM OF AGREEMENT BETWEEN THE CALIFORNIA DEPARTMENT OF TRANSPORTATION AND THE CALIFORNIA STATE HISTORIC PRESERVATION OFFICER REGARDING THE SILVERADO TRAIL/COOMBSVILLE ROAD 5-WAY INTERSECTION PROJECT IN NAPA COUNTY, CALIFORNIA INVITED SIGNATORY: CALIFORNIA DEPARTMENT OF TRANSPORTATION DISTRICT 4 ________________ David Ambuel, Acting District Director Date Caltrans, District 4
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MEMORANDUM OF AGREEMENT BETWEEN THE CALIFORNIA DEPARTMENT OF TRANSPORTATION AND THE CALIFORNIA STATE HISTORIC PRESERVATION OFFICER REGARDING THE SILVERADO TRAIL/COOMBSVILLE ROAD 5-WAY INTERSECTION PROJECT IN NAPA COUNTY, CALIFORNIA INVITED SIGNATORY: CITY OF NAPA ___________________________________________________________________ Date ____________ Jessica Lowe, Public Works Director City of Napa
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MEMORANDUM OF AGREEMENT BETWEEN THE CALIFORNIA DEPARTMENT OF TRANSPORTATION AND THE CALIFORNIA STATE HISTORIC PRESERVATION OFFICER REGARDING THE SILVERADO TRAIL/COOMBSVILLE ROAD 5-WAY INTERSECTION PROJECT IN NAPA COUNTY, CALIFORNIA CONCURRING PARTY: NAPA COUNTY LANDMARKS ________________ Christine Madrid French, Executive Director Date Napa County Landmarks MEMORANDUM OF AGREEMENT BETWEEN THE CALIFORNIA DEPARTMENT OF TRANSPORTATION
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AND THE CALIFORNIA STATE HISTORIC PRESERVATION OFFICER REGARDING THE SILVERADO TRAIL/COOMBSVILLE ROAD 5-WAY INTERSECTION PROJECT IN NAPA COUNTY, CALIFORNIA Attachment A Project Description
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DESCRIPTION OF UNDERTAKING The City of Napa, in collaboration with Caltrans District 4, proposes to convert the existing intersection of Silverado Trail (State Route 121), Third Street, Coombsville Road, and East Avenue to two, single-lane roundabouts. The northern roundabout has four legs and includes SR 121, Third Street, and East Avenue. The southern roundabout has three legs and includes SR 121 and Coombsville Road. The Project would also include curb, gutter, ramps, sidewalk, streetlights, and storm drain improvements. Ground disturbing impacts will be up to 6 feet for utility relocations, lighting, landscaping and drainage facilities, placement of pipe, drainage structures, landscaping, irrigation, and backfill. A maximum excavation depth of 10 feet may be required to install foundations for retaining walls along the Coombsville Road and East Avenue legs. One residential property, 36 Coombsville Road will require major acquisition of an undeveloped area of the parcel in order to construct the new roundabouts; another, 801 Silverado Trail, will require full acquisition and will be demolished as part of the project. PROJECT DESCRIPTION The proposed scope of work for this project includes one build alternative. The Undertaking includes permanent right-of-way (ROW) acquisitions, including full acquisition of 801 Silverado Trail (APN-006-147-004) (Figure 1). The single-family house at 801 Silverado Trail, which is a contributing element to the identified East Napa Historic District, will be demolished as part of the Undertaking. Other acquisitions are required to accommodate the southerly roundabout, and minor frontage impacts to conform the roundabout(s) and/or shared use path, including driveway conforms or realignments. Temporary construction easements (TCEs) are required on eight parcels, which will be returned to their previous condition after completion of construction. The project elements are as follows: A double roundabout with four legs on the northern roundabout and three legs on the southern roundabout. Fill will be used to flatten the roadway grade on the eastern entry/exits. A 10-foot shared-use path throughout the new roundabout(s), buffered from the roadway by at least two feet of landscaping. Replacement of existing sidewalks as needed to follow the new roadway edge. Two retaining walls, including a short cut style retaining wall (4-6 feet tall and 100 feet long) along the northern side of Coombsville Road and a fill style retaining wall (12-14 feet high and 80 feet long) along the northern side of East Avenue. The retaining walls will support the new shared-use path and roundabout approach deflection, while minimizing impacts to adjacent parcels. Relocation of the water transmission line on Third Street. Adjustment of utility vaults to match the final pavement surface elevations.
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Relocation or undergrounding of up to six joint utility poles. A staging area on a City of Napa -owned surface parking lot at the north side of Third Street and Lawrence Street (APNs 006-132-001, -002, and 006). No structures are located on these parcels. Excavation for utility relocation, lighting, landscaping and drainage which require trenching, placement of pipe, drainage structures, landscaping, irrigation, and backfill will reach a maximum depth of six feet. An excavation depth of 10 feet may be required to install retaining walls foundations. No Build Alternative Under the No Build Alternative, there would be no action, and the improvements associated with the Build Alternative would not be constructed. This alternative does not satisfy the purpose and need of the project.
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