PWSD Standards and Specifications Manual

238 Pages·2017·10.22 MB·English

ENGINEERING DEPARTMENT
STANDARDS AND

SPECIFICATIONS MANUAL

2017 Revision to Specifications and
January 2017

Standards Manual
The PWSD Standards and Specifications Manual establishes

standard requirements for constructing water and sanitary sewer
infrastructure projects in the PWSD service area boundaries.
TABLE OF CONTENTS
DEFINITIONS ............................................................................................................................................. i
ABBREVIATIONS ...................................................................................................................................... iv
CHAPTER 1 – GENERAL INFORMATION ........................................................................................... 1.1
Section 1 – Introduction to Parker Water and Sanitation District (PWSD) ............................................................ 1.1
Section 2 – Use of this Specifications and Standards Manual .................................................................................... 1.4
Section 3 – Construction Drawings ................................................................................................................................ 1.6
Section 4 – Project Acceptance by PWSD ..................................................................................................................1.10

Attachments & Forms:
Water and Sanitary Sewer Main Drawing Requirements Checklist
Landscape Irrigation Calculation Sheet
Signature Block Note
Pre-Construction Meeting Summary Template
Industrial/Commercial Wastewater Discharge Information Form
CHAPTER 2 – WATER SYSTEM SPECIFICATIONS AND DETAILS .................................................... 2.1
Section 1 – Purpose and General Requirements .......................................................................................................... 2.1
Section 2 – Water Distribution System .......................................................................................................................... 2.3
Section 3 – Water Main Equipment ............................................................................................................................... 2.5
Section 4 – Encasement and Casing Installation .......................................................................................................... 2.8
Section 5 – Section Service Lines and Appurtenances ..............................................................................................2.25
Table of Contents for Water System Standard Details..............................................................................................2.34
Water System Standards Details (73 total)
CHAPTER 3 – SANITARY SEWER SYSTEM SPECIFICATIONS AND DETAILS .................................. 3.1
Section 1 – Purpose and General Requirements .......................................................................................................... 3.1
Section 2 – Sanitary Sewer System .................................................................................................................................. 3.3
Section 3 – Sanitary Sewer Equipment .......................................................................................................................... 3.6
Section 4 – Encasement and Casing Installation .......................................................................................................... 3.9
Section 5 – Sewer Service Connection to Building ....................................................................................................3.24
Table of Contents for the Sanitary Sewer System Standard Details ........................................................................3.28
Sanitary Sewer Standard Details (33 total)
CHAPTER 4 – MATERIAL SPECIFICATIONS ........................................................................................ 4.0
Water System Material Specifications ............................................................................................................................. 4.1
Sanitary Sewer System Material Specifications ...........................................................................................................4.33

PARKER WATER AND SANITATION DISTRICT
TABLE OF CONTENTS
2017 Revision
DEFINITIONS

These definitions supplement those definitions provided in PWSDs Rules and Regulations document dated
November 2014. The following definitions shall be as used in the PWSD Standards and Specifications
Manual, unless the context shall otherwise require, the words defined herein shall have the following
meanings ascribed.

Advanced Meter Infrastructure (AMI): A system of electronic components that permit the collection of
meter readings by wireless or wired electronic communication systems. Components thereof may be attached
to and become part of a customer’s water meter. Other components may include central data collection units,
vehicle-mounted equipment, and data transmission systems.

American Backflow Prevention Association Backflow Prevention Assembly Tester: An individual
certified in the field test procedures published in the current Manual of Cross-Connection Control. This
manual is published by the USC FCCCHR. This individual shall be proficient in field test procedures and
preparation of assembly test reports.

American Society of Sanitary Engineering Backflow Prevention Assembly Tester: An individual
certified in the field test procedures meeting the minimum performance requirements of the ASSE Series
5000. This individual shall be proficient in test procedures and preparation of assembly test reports.

Approved Applicant for System Extension: Any persons, association, corporation, entity, or government
agency that is granted approval by PWSD to receive water service (e.g., a subdivider or a developer).

As – Built Drawings or Plans: Included final construction drawings modified to include modifications
incurred during installation as provided to PWSD by the Contractor.

Backflow Prevention: The prevention of the unwanted flow of water or any foreign liquids, gases, or
substances into the pipelines of a potable water supply by the installation of a backflow prevention assembly.

Backpressure: An increase in pressure in the downstream piping system that can cause a reversal in the
normal direction of flow at a particular point. The increase in pressure can be caused by pumping, air
pressure, or the elevation of piping.

Commercial Property: Real estate zoned for business, industrial, or multi-family use consisting of six or
more units with a domestic, fireline, and/or dedicated water irrigation service tap (defined as such for cross
connection purposes).

Contractor/Builder/Owner shall mean any person desiring to construct an extension of or connection to
any of PWSD’s water distribution or sewage collection systems or other PWSD infrastructure.

Control Valve: A valve used to isolate conditions downstream from the meter on a specified branch line
within a private plumbing system (irrigation system, boiler, fireline, etc.). This type of valve may also be
referred to as an isolation valve.

Cross-Connection Control: An administered program that is designed to protect the public health, public
drinking water supply, and recycled distribution system by the regulation and monitoring of the installation
and maintenance of backflow prevention assemblies.

District or PWSD: shall mean the Parker Water and Sanitation District.
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District or PWSD Engineer: shall mean any representative designated by the PWSD Director of
Engineering.

PWSD Director of Engineering – shall be responsible for assigning Engineers to infrastructure
improvement projects and providing necessary approvals on behalf of the PWSD Engineering Department.

Domestic Water Service: Pipes, fittings, and appurtenances used to convey water from the tap to the
plumbing of licensed premises for human consumption.

PWSD Inspector: The authorized representative of the Engineer assigned to provide inspection of
infrastructure improvements construction.

Industrial Waste Permit: A permit issued by the District authorizing the discharge of specific industrial
wastes into the District’s sewer system. Refer to PWSD Rules and Regulations documents for definition of
industrial wastes.

Irrigation Service: Pipes, fittings, and appurtenances that are used to convey water from the tap on PWSD
facilities to the plumbing of the licensed premises for irrigation use only.

Isolation Valve: A valve used to isolate conditions downstream from the meter on a specified branch line
within a private plumbing system (irrigation system, boiler, fireline, etc.). This type of valve may also be
referred to as a control valve.

“Landscape Irrigation Worksheet”: shall mean the worksheet used to determine the number of SFE’s
required to irrigate a particular area of landscaping. A copy of the worksheet is attached as Exhibit F.

Manager: shall mean the PWSD Manager or his designee(s) responsible for the daily operations of PWSD.

Meter Inspector: An authorized representative of PWSD responsible for ensuring that water services and
metering installations, including AMI systems, are in compliance with applicable standards.

Multi-Family Residential: A two to five unit dwelling with a domestic, fireline, and/or dedicated water
service tap (defined as such for cross-connection purposes).

Owner: The legal owner of a parcel of land as reflected in the county assessor’s records.

Plans: Engineered drawings intended to illustrate construction improvements for the water services
proposed that show the location, dimensions, materials, and details of the proposed work.

Pressure Vacuum Breaker: A vacuum breaker designed to prevent backsiphonage. It consists of a spring-
loaded check valve, a spring-loaded inlet opening, a tightly closing shut off valve on each side of the
assembly, and two appropriately located test cocks. This type of assembly shall not be subjected to
backpressure.

Service Lines: shall mean the pipe, line or conduit from either PWSD’s water distribution or sewer main to
the structure it is to serve. The service line for water service is the pipe, line or conduit that runs from the
Customer’s side of the curb stop to the inlet of the water meter inside the house, or for Customers that have
a meter pit, the service line is the portion of the line from the Customer’s side of the curb stop to the meter
and from the outlet of the meter to the Customer’s structure. The service line for sewer service is the pipe
from the Customer’s structure to the tap into the sewer main. The service line for fire service is the pipe from
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the Customer’s structure to the tap into the water main. Customers are solely responsible for their water,
sewer, and fire service lines, regardless of whether they extend into the public rights-of-way.

Sewer and/or Sewer Main: shall mean any pipe or conduit currently or proposed in the future to be owned
by the District used for carrying sewage.

Sewer System: shall mean the District’s sewer facilities, including sewer mains, treatment plants, interceptors,
lift stations, outfalls, and other sewer facilities, owned and/or controlled by the District, none of which
intentionally admit storm water, ground water, or surface water.

Single-Family Residential: A single unit dwelling (defined as such for cross-connection purposes), single
family equivalent (SFE), shall mean an annual water demand or sewage treatment demand equal to that of a
single family home served by a ¾” tap. In the case of a water tap to be utilized solely for outdoor irrigation
and not to be used for interior domestic purposes, one SFE shall be required for each 6,000 square feet of
turf being irrigated, or the equivalent thereof, as set forth in the District’s Landscape Irrigation Worksheet,
included in Chapter 1.

Springline: An imaginary horizontal reference line located at mid-height or halfway point of pipe/conduit.

Stop Box: A valve box, service box, or curb box that is set over the property line valve or curb stop on a
domestic water service.

Stub-in: A connection to a main intended to allow installation of a portion of the service line for taps 2
inches and smaller prior to setting the meter and activating the license for a particular premises.

Subgrade: The elevation at the bottom of pavement depth.

Tap or Connection: shall mean the connection of the service line to the District’s water distribution and/or
sewer collection main.

Tap Permit: shall mean written authority to connect to the District’s water distribution or sewer mains.

Transmission Main: shall mean a water distribution or sewer main which, once installed, will constitute an
extension of a water distribution or sewer main either then owned or proposed in the future to be owned or
served by the District.

Water Hammer: A pressure or shock wave traveling in the water piping system which when stop in velocity
creates vibration and noise in the piping system. Can result in damage to the water system by weakening
joints and valves.

Water System: shall mean the District infrastructure, facilities and water rights that provide water service,
utilizing both renewable and non-renewable water supplies, including without limitation water treatment
facilities, transmission lines, storage tanks, pumping stations, and production wells.

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ABBREVIATIONS

AASHTO American Association of State Highway Transportation Officials
AF Acre-Feet
ANSI American National Standards Institute
ARV Air Relief Valves
AWWA American Water Works Association
ASTM American Society for Testing Materials
BMP Best Management Practices
BO Blow-Offs
CDPHE Colorado Department of Public Health and Environment
District Parker Water and Sanitation District
DIP Ductile Iron Pipe
DOLA Colorado Department of Local Affairs
DU Dwelling Unit
EPA United States Environmental Protection Agency
FT Feet, Foot
gal Gallons
GIS Graphical Information System
GPCD Gallons Per Capita Per Day
GPD Gallons Per Day
GPM Gallons per Minute
In Inch, Inches
L Liter
LF Linear feet
Lb pound
M&I Municipal and Industrial
Mg milligrams
MG Million Gallons
MGD Million Gallons per Day
MOA Machined Over-All
NEPA National Environmental Policy Act
No. Number
O&M Operations and Maintenance
OSHA Occupational Safety and Health Administration
POC Point of Compliance
Ppb parts per billion
Ppm parts per million
PRV Pressure Relief Valves
PSI Pounds per Square Inch
PVC Polyvinyl chloride pipe
PWSD Parker Water and Sanitation District
RCP Reinforced Concrete Pipe
RHR Rueter-Hess Reservoir
ROW Right of Way
sf Square Feet
TCR Total Chlorine Residual
TSS Total Suspended Solids
USACE United States Army Corp of Engineers
WISE Water Supply and Infrastructure Efficiency
yr Year
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CHAPTER 1 – GENERAL INFORMATION

TABLE OF CONTENTS
SECTION 1 - PARKER WATER AND SANITATION DISTRICT BACKGROUND ................................ 1.2

SECTION 2 - SPECIFICATION MANUAL ............................................................................................................ 1.4
2.1 Construction Drawing Approval Process: ........................................................................................................ 1.4

SECTION 3: CONSTRUCTION DRAWING REQUIREMENTS .................................................................... 1.6
3.1 Standard PWSD Notes for Construction Plans ............................................................................................... 1.6
3.2 Electronic As-Built Construction Drawing Requirement .............................................................................. 1.9

SECTION 4.0 PROJECT ACCEPTANCE BY PWSD ......................................................................................... 1.10
4.1 Probationary Acceptance Procedures .............................................................................................................. 1.10
4.2 Final Acceptance Procedures ............................................................................................................................ 1.11

FIGURES
Figure 1-1: Parker Water and Sanitation District Service Area Map ................................................................... 1.3
Figure 1-2: PWSD Administrative Workflow Schematic for Construction Drawing Approval ..................... 1.5
Figure 1-3: PWSD Construction Approval Process ............................................................................................ 1.12

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SECTION 1 - PARKER WATER AND SANITATION DISTRICT
BACKGROUND

Established in 1962, Parker Water and Sanitation
District (PWSD) has always been proactive in its
mission to effectively manage our vital water
resources and to ensure quality and value to those
we serve. This manual describes our history and
vision for the future, as well as the steps we are
taking to face water supply challenges. Together, we
can realize our vision of “sustaining life for our
community.”

Parker’s Early Pioneers
There is a natural attraction to the town of Parker
that dates back to some of Colorado’s earliest
pioneers and homesteaders, more than one hundred
years ago. Several landmarks, like Twenty Mile
Road, distinctly tie Parker to the heart of downtown Denver by this twenty-mile measurement. Early
agricultural visionaries saw the opportunities here and the valuable resources. These early families created the
homespun heritage of Parker through the same conservation-minded practices that will always be necessary to
protect our environment.

Parker Water Facilities
Currently, the primary water source for our community is groundwater with recent addition of in-priority
surface water which is stored in Rueter-Hess Reservoir. . PWSD facilities include a single surface water
purification facility, two wastewater reclamation facilities, thirty-seven Denver Basin deep wells, eight Cherry
Creek alluvial wells, and five potable water storage tanks. Rueter-Hess Reservoir is now complete and has a
capacity of 75,000 acre-feet (AF).

Surface water purification facility: This state-of-the-art facility implements the first application of
ceramic membrane technology in North America (2015). The facility takes Rueter Hess Reservoir
water through treatment processes and conveys that treated water through the PWSD distribution
system.
Wastewater reclamation facilities: These facilities use the highest standards of advanced
wastewater treatment to filter, treat, and clean water to meet and exceed federal clean water standards.
The treated water is then discharged into Cherry Creek.

Shallow wells: Also called alluvial wells, PWSD maintains/operates wells that draw alluvial water at
the edge of the Cherry Creek. They are each between 50 and 75 feet deep.

Deep aquifer wells: These wells draw water from deep, underground sources known as aquifers.
They range from 515 to 2,745 feet deep.

Lift stations: These facilities "lift" sewage from areas lower than the wastewater treatment facilities in
order to produce a gravity flow into those facilities.

Pump and/or booster stations: These facilities help pump water from one pressure zone to
another, especially when the water is located and/or stored at a lower elevation than its destination
(homes and businesses).
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Storage Tanks: Hold water for business and residential use as well as Fire Flow Prevention.
The PWSD serves communities within many local jurisdictions: The Town of Parker, The City of Lone Tree,
The City of Castle Pines, and portions of unincorporated Douglas County.
Each jurisdiction has their own requirements for submittals on development projects. Be sure to visit their
websites for their review and approval processes. Figure 1-1 illustrates the service area for PWSD.
This document contains the PWSD Specification Manual, Plan Requirements Checklist, and other pertinent
information you will need to submit your project to the PWSD for approval.

FIGURE 1-1: PARKER WATER & SANITATION DISTRICT SERVICE AREA MAP

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SECTION 2 - SPECIFICATION MANUAL
This specification manual is to provide information to all ENGINEERS, CONTRACTORs, DEVELOPERs
and other interested persons or firms, of PWSD’s requirements to develop within the service area including
the design process and construction of water and sanitary sewer infrastructure. This publication presents
submittal requirements and the technical specifications for the design and installation of water and sanitary
infrastructure in conjunction with the latest revision of the District Master Plan and District Rules and
Regulations.
2.1 CONSTRUCTION DRAWING APPROVAL PROCESS
Per Section 6 of the PWSD’s Rules and Regulations, no person shall construct a water and/or sanitary sewer main
within the jurisdiction of the PWSD without first having made formal written application to the District and
obtaining approval thereof. Any such application shall be accompanied by:
• Two complete set of drawings (plans) and specifications prepared by a Colorado registered
professional engineer. Drawing submittal requirements included in the attached Drawing Requirements
Checklist.
• A schedule showing a detailed construction schedule for the proposed improvements.
2.1.1 Plan Review:
Once PWSD receives the written application and plans, the District’s Engineer shall have thirty (30)
working days during which to either approve and/or reject the construction drawings. Costs to revise the
plans and inspections following rejected plans will be borne by the CONTRACTOR.

Figure 1-2 illustrates the administrative workflow to be completed by the CONTRACTOR in order to obtain
approval from PWSD for the construction drawings.
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