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Standard Plans & Specifications
The “City of Napa Standard Specifications and Standard Plans” (City Standards) is a document that provides a summary and guide to key elements of the regulations and policies governing the design and construction of public improvements within the City of Napa.
The City of Napa requires design engineers, developers, and contractors to comply with the City Standards for projects within the City right-of-way and for City maintained facilities within easements. City Standards are intended to create uniformity of constructed infrastructure. Standardization of constructed facilities provides the City with the best value by minimizing long-term maintenance and operational costs.
The City Standards are organized by the following categories: Streets, Electrical, Drainage, Stormwater, Water, Parks and Landscaping, Street Trees, and Fire.
If you would like to purchase a hard-copy set of the City Standards you can do so at the City of Napa Community Services Building, 1600 First Street.
Standard Plans & Specifications (updated October 2018):
Streets Standard Plans
- Combined Streets Standard Drawings
- S-1 Standard Curb and Gutter
- S-1A Standard Curb and Gutter 12inch Gutter
- S-2 A1-6 and B-3 Curbs
- S-3 Transition Detail - Rolled Curb to Standard Curb and Gutter
- S-4 Standard Details - Sidewalk Sections
- S-4A Fire Hydrant Location - For Curb Adjacent Sidewalk
- S-4B Concrete Connections
- S-5 Standard Driveway Approach
- S-5A Standard Driveway Approach - Short Ramp
- S-5B Standard Driveway Approach - With Curb Ramps
- S-6A Street Standard - Major Arterials
- S-6B Street Standard - Minor Arterials
- S-6C Street Standard - Collectors
- S-6D Street Standard - Local Streets
- S-6E Street Standard - Hillside Local Street
- S-6F Street Standard - Rural Local Street
- S-7A Typical Residential Cul-de-Sac
- S-7B Typical Commercial Industrial Cul-De-Sac
- S-7C Partial Residential Cul-De-Sac Adjacent to Future Developement - Fire Enigne
- S-7D Partial Residential Cul-De-Sac Adjacent to Future Developement - Ladder Truck
- S-8 Standard Curb Return - Curb, Gutter and Sidewalk
- S-9 Caltrans Revised Standard Plan A88A Curb Ramp Details
- S-10 Pavement Section Edge Protection
- S-11A Standard P.C.C. Cross Gutter
- S-11B Standard Street Profile at P.C.C. Cross Gutter
- S-12 Standard Backfill Detail
- S-13 Standard Permanent Monument
- S-14 Typical Method for Setting Structures
- S-14A Water Valve and Monument Adjustment
- S-15 Standard Sidewalk Barricade
- S-16 Standard Wood Type Guard Rail
- S-17 Standard Metal Beam Guard Rail
- S-18A Street Name Sign Installation - Public Streets
- S-18B Street Name Sign Installation - Private Streets
- S-19 Street Name Sign Standard Specifications
- S-23 Enforceable Compact Parking Standard
- S-25 Visibility and Fencing Requirements at Intersections, Driveways, and Property Lines
- S-26 Address Painting on Curb Face
- S-27 Stamped Decorative Concrete for Medians
- S-28 L-Intersection Knuckle
- S-29A Hammerhead Turnarounds - Fire Engine
- S-29B Hammerhead Turnarounds - Ladder Truck
- S-30B Retaining Wall
- S-30A Retaining Wall
Electrical Standard Plans
Drainage Standard Plans
- Combined Drainage Standard Drawings
- D-2 Catch Basin Number 2, Curb Inlet
- D-2A Catch Basin No 2 Curb Inlet 12inch Gutter
- D-4A Special Aprons for D-2 and GO Catch Basins
- D-5A Under Sidewalk Drain - Residential
- D-5B Under Sidewalk Drain - Commercial
- D-6 Standard Rock Slope Protection Storm Drain Outfall Detail
- D-7 Standard Storm Drain Manhole
Stormwater Standard Plans
- Combined Stormwater Standard Drawings
- SWQ-100 St Bio Plntr no park
- SWQ-101 St Bio Plntr w park
- SWQ-102 St Bio Sloped no park
- SWQ-103 St Bio Sloped w park
- SWQ-104 Parking Lot Planter
- SWQ-105 Parking Lot Bio Sloped
- SWQ-110 Curb and Gutter
- SWQ-111 Deep Curb
- SWQ-112 Thickened Edge Sidewalk
- SWQ-113 Flush Curb at Sidewalk
- SWQ-114 Parking Lot Edge Options
- SWQ-120 Curb Cut Inlet for Planters
- SWQ-121 Curb Cut Inlet for Side Slopes
- SWQ-122 Curb Cut Inlet w Gravel Energy Dissipation
- SWQ-123 Inlet w Grate
- SWQ-123A Inlet w Under SW Drain
- SWQ-130 Gravel Check Dam
- SWQ-131 Concrete Check Dam
- SWQ-140 Overflow Structure w Beehive Grate
- SWQ-141 Overflow Structure Collar
- SWQ-150 Impermeable Layer
- SWQ-160 Bioretention Plant Matrix KEY
- SWQ-161A Bioretention Plant Matrix-161A Plant Matrix
- SWQ-161B Bioretention Plant Matrix-161B Plant Matrix
- SWQ-162 Planting Inudation Zones
- SWQ-200 Street Bio Planter underdrain no park
- SWQ-201 Street Bio Planter underdrain w park
- SWQ-202 Street Bio Sloped underdrain no park
- SWQ-203 Street Bio Swale underdrain w park
- SWQ-204 Parking Lot Planter underdrain
- SWQ-205 Parking Lot Bio Sloped underdrain
- SWQ-206 - No Dumping Drains to River
Water Standard Plans
- Combined Water Standards-(PDF)
- W-01 - 0.75-in and 1-in Water Service-(PDF)
- W-02A - 1.5-in Water Service-(PDF)
- W-02B - 2-in Water Service-(PDF)
- W-03A - 3-in Water Service-(PDF)
- W-03B - 4-in Water Service-(PDF)
- W-03C - 6-in Water Service-(PDF)
- W-04A - 2-in Fire Service-(PDF)
- W-04B - 4-in and Larger Fire Services-(PDF)
- W-04C.1 - Metered Fire Service with Private Hydrants
- W-04C.2 - Metered Fire Service with Private Hydrants Notes
- W-05A - DCV for .75-in and 1-in Residential Services-(PDF)
- W-05B - DCV for 1.5-in and 2-in Residential Services-(PDF)
- W-05C - DCV (Exterior) for 3-in to 8-in Residential Services-(PDF)
- W-05D.1 - Interior DCV BFD Installation for 3" to 8" for Residential Services
- W-05D.2 - Interior DCV BFD Installation for 3" to 8" for Residential Services Notes
- W-06A - RP (Exterior) for .75-in to 2-in Commercial Services-(PDF)
- W-06B.1 - Interior Reduced Pressure BFD Installation for Commercial Services
- W-06B.2 - Interior Reduced Pressure BFD Installation for Commercial Services Notes
- W-06C.1 - Exterior Reduced Pressure BFD Installation for Commercial Services
- W-06C.2 - Exterior Reduced Pressure BFD Installation for Commercial Services Notes
- W-06D.1 - Interior Reduced Pressure BFD Installation for Commercial Services
- W-06D.2 - Interior Reduced Pressure BFD Installation for Commercial Services Notes
- W-07A - DCV (Exterior) for 2-in Fire Services-(PDF)
- W-07B.1 - Interior DCV BFD Installation for Fire Services
- W-07B.2 - Interior DCV BFD Installation for Fire Services Notes
- W-07C - DCV (Exterior) for 4-in to 8-in Fire Services-(PDF)
- W-07D - DCV (Interior) for 4-in to 8-in Fire Services-(PDF)
- W-08 - Fire Hydrant-(PDF)
- W-09 - Valves-(PDF)
- W-10A - 2-in Blow-Off Assembly-(PDF)
- W-10B - 2-in Blow Off (TOP)-(PDF)
- W-10C - Transmission Valve_Blowoff_Bypass-(PDF)
- W-10D - Water Sampling Station-(PDF)
- W-10E - Motorized Transmission Valve_Blowoff_Bypass-(PDF)
- W-11A - 1-in Air Release and Vacuum Valve-(PDF)
- W-11B - 2-in Air Release and Vacuum Valve-(PDF)
- W-12 - General Water Notes-(PDF)
- W-13A - Water Trench Detail-(PDF)
- W-13B - DOT Water Main Casing-(PDF)
- W-14A - Thurst Block and Wingwalls-(PDF)
- W-14B - Water Main Restraint Details-(PDF)
- W-15 - Water Main Offsets-(PDF)
- W-16A - Hot-Tap Detail-(PDF)
- W-16B - Tie-In-(PDF)
- W-17 - Abandonment of Existing Water Facilities-(PDF)
- W-18 - Water Facility Obstruction Separation Requirements-(PDF)
- W-19 - Future Water Main Extension Stub-(PDF)
- W-20A - Water Service Responsibility-(PDF)
- W-20B - Water Service Responsibility (Unmetered Service)-(PDF)
- W-21 - Installation of Fire Hydrant Pavement Markers-(PDF)
- W-22A - Horizontal Separation Requirements from Utilities-(PDF)
- W-22B - Vertical Separation Requirements from Utilities-(PDF)
- W-23A - Pipe Connectivity-(PDF)
- W-23B - Exothermic Weld-(PDF)
- W-23C - Bond Cables-(PDF)
- W-23D - Cable Splice-(PDF)
- W-24A - Anode Installation-(PDF)
- W-24B - Anode Installation (Fitting)-(PDF)
- W-24C - Anode Installation (Vertical Offset)-(PDF)
- W-24D - Anode Installation (Leak Clamp)-(PDF)
- W-24E - Anode Installation - Drivable Magnesium Anodes-(PDF)
- W-25A - Insulating Joint-(PDF)
- W-25B - Insulating Joint Coating-(PDF)
- W-26A - Test Station and Terminal Box-(PDF)
- W-26B - Anode Test Station (Existing Pipe)-(PDF)
- W-26C - Test Station Cable Identification-(PDF)
- W-27A - Test Station (Corrosion)-(PDF)
- W-27B - Test Station (Foreign Pipeline)-(PDF)
- W-28A - Anode Test Station (DIP)-(PDF)
- W-28B - Anode Test Station (Fire Hydrant)-(PDF)
- W-28C - Anode Test Station (Valve)-(PDF)
- W-28D - Anode Test Station (Cross)-(PDF)
- W-28E - Anode Test Station (Casing)-(PDF)
- W-29A - Wenner Four Pin Resistivity Test-(PDF)
- W-29B - Barnes Layer Resistivity-(PDF)
- W-29C - Soil Box Resistivity Test-(PDF)
- Water Distribution Design Provisions-(PDF)
Parks and Landscaping Plans
- Combined Parks and Landscaping Plans
- PL-1 Standard Above Ground Backflow Device
- PL-1A Standard Above Ground Backflow Device
- PL-2 Remote Control Valve
- PL-3 Central Control Assembly
- PL-3A Non-Central Irrigation Controller Cabinent
- PL-3B Battery Operated Irrigation Controller Cabinent
- PL-4 Quick Coupling Valve
- PL-5 Bubbler Installation