Sanitary Sewer and Recycled Water Standards

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. For questions about the Standard Specifications, please contact the NapaSan Engineering Department at (707) 258-6000.

Sections and Sheets are downloadable PDFs.  

PLEASE NOTE: The Standard Specifications may be updated periodically. Please check that you have the most up-to-date version before designing or constructing your project.

SECTIONS & SHEETS

 REVISION DATE

Standard Specifications:

Complete Document   June 2017
Table of Contents  June 2017

Volume 1 – General Conditions  

January 2016

Volume 2 – Sanitary Sewer 

June 2017

Volume 3 – Recycled Water    

June 2017

STANDARD DETAILS:  Sanitary Sewer

SS-1 – Sanitary Sewer Cleanout  

 January 2016

SS-2 – Standard Residential Public Lateral for New Construction  

 January 2016 

SS-3 – Sewer Lateral Crossing Above Utility, No Conflict in Grade

May 2012

SS-4 – Simple Sewer Lateral Break, Sewer Below Utility, No Conflict in Grade

May 2012

SS-5 – Simple Sewer Lateral Break with Conflict in Grade

May 2012

SS-6 – Sewer Lateral Layout 1

May 2012

SS-7 – Sewer Lateral Layout 2 

January 2016

SS-8 – Drop Type Manhole   

June 2017

SS-9 – Standard Pre-Fab Manhole (Sheet 1)   

June 2017

SS-9A – Standard Pre-Fab Manhole (Sheet 2)  

June 2017

SS-10 – Barrel Section Joints for Standard Pre-Fab Manhole 

January 2016

SS-11 – Typical Manhole Using Impression Ring  

January 2016

SS-12 – Pre-Cast Concrete 48”x24” Reducer Slab for Manholes

May 2012

SS-13 – Typical Method for Setting Appurtenances

May 2012

SS-14 – Standard 24” Manhole Frame and Cover

May 2012

SS-15 – Bolt-Down 24” Manhole Frame and Cover

May 2012

SS-16 – 36” Diameter Manhole Frame and Cover

May 2012

SS-17 – Typical Installation Irrigation “Subtraction” Meter

May 2012

SS-18 – Standard Casing Installation 

January 2016

SS-19 – Redwood Check Dam

May 2012

SS-20 – Trench Dams

May 2012

SS-21 – Earth Trench Dam

May 2012

SS-22 – Three Stage Sand and Grease Interceptor  

January 2016

SS-23 – Sanitary Sewer Sampling Box  

January 2016

SS-24 – Standard Trench Section  

January 2016

SS-25 – Standard Tracer Wire Installation Detail  

January 2016

SS-26 – Abandoned Pipe Plug

May 2012

SS-27 – Abandoned Manhole

May 2012

SS-28 – Flush Hole  

January 2016

SS-29 –Trench Section for Replacement/Repair of Residential Sewer Lateral  

January 2016

 

 

STANDARD DETAILS:  Recycled Water

 

RW-1 – Concrete Anchor Blocks for Vertical Bends 

January 2016

RW-2 – Concrete Thrust Blocks for Horizontal Bends 

January 2016

RW-3 – Vertical Offset

May 2012

RW-4 – Recycled Water Trench Section 

January 2016

RW-5 – Temporary Blow-off and/or Metered Connection for Mains Under Construction

May 2012

RW-6 – 2” Blow-Off Assembly  

January 2016

RW-7 – 3/4” & 1” Water Service Lateral for 3/4” & 1” Meters 

July  2012

RW-8 – 2” Water Service Lateral for 2” or 1-1/2” Meter

May 2012

RW-9 – 4” Water Service Lateral for 3” Meter

May 2012

RW-10 – 4” Water Service Lateral for 4” Meter

May 2012

RW-11 – 6” Water Service Lateral for 6” Meter

May 2012

RW-12 – Reduced-Pressure Backflow Device 

January 2016

RW-13 – Gate Valve 

January 2016

RW-14 – Pressure Reducing Valves

May 2012

RW-15 – 1” Air Release and Vacuum Valve Assembly

May 2012

RW-16 – 2” Air Release and Vacuum Valve Assembly

May 2012

RW-17 – Recycled Water Line Notes

January 2016

RW-18 – Recycled Water Sign

May 2012