TO: Napa County Planning Commission
FROM: Brian D. Bordona, Director of Planning Building and Environmental Services
REPORT BY: Kelli Cahill, Planner III
SUBJECT: Diamond Creek Vineyards Winery Use Permit Major Modification No. P19-00177-MOD
RECOMMENDATION
title
DIAMOND MOUNTAIN VINEYARD COMPANY INC/ DIAMOND CREEK VINEYARDS / MAJOR MODIFICATION NO. P19-00177 - MOD & REQUEST FOR EXCEPTION TO THE NAPA COUNTY ROAD AND STREET STANDARDS
CEQA STATUS: Consideration and possible adoption of a Mitigated Negative Declaration and a Mitigation Monitoring and Reporting Program (MMRP) (SCH#2025120440). According to the proposed Mitigated Negative Declaration, the proposed project would not have any potentially significant environmental impacts after implementation of mitigation measures. Mitigation measures are proposed for the following area: Biological Resources. The project site is not included on a list of hazardous materials sites compiled pursuant to Government Code Section 65962.5.
REQUEST: This application was submitted to participate in the County's Code Compliance Program as described in Resolution No. 2018-164 adopted by the Napa County Board of Supervisors on December 4, 2018. The proposal is to modify an existing winery Use Permit and subsequent modifications to recognize and approve items that are out of compliance with the permitted entitlements and for expansion beyond existing entitlements such as construction of a new winery building and agricultural storage building, increase in production, number of employees, weekly visitation, on-premises consumption of wine produced on-site, additional parking, number of marketing events, and necessary infrastructure improvements and upgrades to the wastewater system, and conversion of the existing winery building to a single-family residence with parking. The request also includes an Exception to the Napa County Road and Street Standards. The project is located on a 78.12-acre holding within the Agricultural Water...
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