Standard Specifications
The Sanitary Sewer and Recycled Water Standards (Standard Specifications) govern requirements, design, and all work in connection with main sewer, public and private laterals, and recycled water systems construction within the NapaSan service area (PDF). For questions about the Standard Specifications, please contact the NapaSan Engineering Department at 707-258-6000.
The Standard Specifications may be updated periodically. Please check that you have the most up-to-date version before designing or constructing your project.
NapaSan has updated portions of the Sanitary Sewer and Recycled Water Standards effective June 24, 2019. Click here for a summary of these updates.
Sections & Sheets
| Standard Specifications | Revision Date |
|---|---|
| Complete Document (PDF) | June 2019 |
| Table of Contents (PDF) | June 2018 |
January 2016 | |
June 2019 | |
June 2018 |
| Standard Details: Sanitary Sewer | Revision Date |
|---|---|
June 2019 | |
SS-2: Standard Residential Public Lateral for New Construction (PDF) | January 2016 |
SS-3: Sewer Lateral Crossing Above Utility, No Conflict in Grade (PDF) | June 2018 |
SS-4: Simple Sewer Lateral Break, Sewer Below Utility, No Conflict in Grade (PDF) | May 2012 |
SS-5: Simple Sewer Lateral Break with Conflict in Grade (PDF) | May 2012 |
May 2012 | |
January 2016 | |
June 2017 | |
June 2019 | |
June 2017 | |
SS-10: Barrel Section Joints for Standard Pre-Fab Manhole (PDF) | January 2016 |
January 2016 | |
SS-12: Pre-Cast Concrete 48 Inch by 24 Inch Reducer Slab for Manholes (PDF) | May 2012 |
May 2012 | |
May 2012 | |
May 2012 | |
May 2012 | |
SS-17: Typical Installation Irrigation “Subtraction” Meter (PDF) | May 2012 |
June 2018 | |
May 2012 | |
June 2018 | |
January 2016 | |
January 2016 | |
January 2016 | |
January 2016 | |
May 2012 | |
May 2012 | |
June 2019 | |
SS-29: Trench Section for Replacement/Repair of Residential Sewer Lateral (PDF) | January 2016 |
| Standard Details: Recycled Water | Revision Date |
|---|---|
| January 2016 | |
| RW-2: Concrete Thrust Blocks for Horizontal Bends (PDF) | January 2016 |
May 2012 | |
January 2016 | |
RW-5: Temporary Blow-off and/or Metered Connection for Mains Under Construction (PDF) | May 2012 |
January 2016 | |
| RW-7: 3/4 inch and 1 inch Water Service Lateral for 3/4 Inch and 1 inch Meters (PDF) | July 2012 |
RW-8: 2 Inch Water Service Lateral for 2 Inch or 1-1/2 Inch Meter (PDF) | May 2012 |
May 2012 | |
| RW-10: 4 Inch Water Service Lateral for 4 Inch Meter (PDF) | May 2012 |
May 2012 | |
January 2016 | |
January 2016 | |
May 2012 | |
May 2012 | |
May 2012 | |
January 2016 | |
May 2012 |