Utilities to be located within the street right-of-way shall be constructed in compliance with these standards. In their use of the right-of-way, utilities shall be given consideration after the traffic-carrying requirements of the roadway which are, namely, to provide safe, efficient and convenient passage for motor vehicles, pedestrians, and other traffic. Aesthetics shall be a consideration. As a matter of policy, undergrounding of electric utilities will be required unless waived by the planning commission and council.
(Ord. 483 § 6.1, 1980)
Utilities within the right-of-way on new roads or in roadways where existing topography, utilities, or storm drains are not in conflict, shall be located as shown in typical sections, and as indicated in this section. Where existing utilities or storm drains are in place, new utilities shall conform to these standards as nearly as practical and yet be compatible with the existing installations. Exceptions may be approved when necessary to meet the special requirements of overhead utilities where right-of-way space is limited, planned unit developments, short subdivisions, mobile home parks, multifamily developments and commercial developments.
A. 
Gas and Water Lines.
1. 
Shoulder and Ditch Section.
If practical: Outside of ditch line.
Otherwise: In shoulder three feet from edge of travel lane.
2. 
Curb and Gutter Section.
Preferable: Near gutter of curb or at distance which will clear root masses of street trees if these are present or planned for.
Otherwise: 10 feet from centerline. Mains and service connections to all lots should be completed prior to placing of surface materials.
3. 
Designated side of centerline to generally conform with King County. GAS: south and west; WATER: north and east.
4. 
Depth of Cover.
a. 
Water at three and a half feet minimum cover from finished grade.
b. 
Gas at three feet minimum cover from finished grade.
B. 
Sanitary Sewers. Mains located five feet south and west of centerline, side sewer cover five feet minimum from finished grade at property line, terminated inside lot.
C. 
Sanitary and water lines shall be separated in accordance with good engineering practice by being spaced at least 10 feet apart, horizontally.
D. 
Gravity systems, whether sanitary or storm drainage, shall have precedence over other systems in planning and installation.
E. 
Electric utilities, power, telephone, cable TV. Required: underground, either side of road, at plan location and depth compatible with other utilities and storm drains. Each utility is to file with the city its construction standards and current revisions.
F. 
Notwithstanding other provisions, underground systems shall be located at least five feet away from the road centerline and where they will not otherwise disturb existing survey monumentation.
(Ord. 483 § 6.2, 1980)
Water mains and sanitary sewer pipe installed in the public right-of-way shall conform to the provisions of Division III and Division IV of the Washington Chapter APWA Standard Specifications, current edition, except as otherwise provided in this chapter.
(Ord. 483 § 6.3, 1980)
A. 
Pole utilities and underground utilities, including service crossings, shall be installed or relocated prior to the start of road construction if planned road cuts and fills are minimal and location of road elements can be clearly indicated in advance. Otherwise such utilities, with connections, shall be installed or relocated after the subgrade has been completed but before surfacing has been placed.
B. 
As a matter of policy, utility trenching or transverse cuts in streets will be discouraged. They will not be permitted unless it can be shown that alternatives such as boring or jacking or relocating outside the paved area are infeasible, or unless the utility can be installed just prior to reconstruction or overlay of the road. In instances where trenching or cutting is permitted, backfilling shall be done in accordance with Section 7-04.3(3) of the State Standard Specifications and the road surface shall be restored at least equal to the existing pavement. If a firm and presentable surface even with the existing pavement is not achieved, the engineer may require remedial action such as redoing of the restoration or overlaying the backfilled trench and adjacent areas of the roadway.
(Ord. 483 § 6.4, 1980)
A. 
It is the desire of the city to provide water and sanitary sewer service to all areas within the city limits, and in some cases beyond. If the proposed development is in reasonable proximity to existing sanitary sewers or water mains, and the existing facilities can be made adequate to handle the increased load anticipated from the new development, the developer will be required to connect to the existing facilities, and contribute to the capital improvement costs involved to make such facilities adequate.
B. 
All sanitary sewers shall be designed in accordance with the Washington State Department of Ecology's "Criteria for Sewage Works Design" (Orange Book 2008), including all amendments thereto, and Chapter 5 of the Snoqualmie Ridge II Development Standards. The design and construction of sewage pump stations shall meet the following criteria; provided, the city engineer may approve deviations from these criteria when an equivalent result can be attained by alternative designs, without endangering the public health or the safety of city utility workers:
1. 
All sewage pump stations shall be equipped with a minimum of two submersible pumps in a wet well.
2. 
Each pump discharge line shall be equipped with a check valve and an isolation, full port plug valve. The check and isolation valves shall be in a separate valve vault. Check valves shall be repairable in place and readily removable. In large lift stations (1,000,000 gallons per day and larger), check valves shall be above ground in a control building.
3. 
The wet well shall be sized to match the sewage flow demands and pump characteristics of that pump station.
4. 
All metals within or upon the wet well, including guide rods and guide cables, shall be stainless steel. Ductile/cast iron or aluminum may be used for some parts (pump housings, etc.) if approved by the city engineer. Hatches shall be aluminum, odor tight and at least three feet above the base flood elevation.
5. 
The wet well shall be equipped with an appropriately sized vent attached to the control building and terminating a minimum of one foot above the ridge of the roof.
6. 
Odor control equipment shall be required in large lift stations located within 200 feet of residential, institutional, or commercial land uses.
7. 
A magnetic flow meter shall be installed on the discharge line of large lift stations.
8. 
A building shall be provided for electrical controls, telemetry and auxiliary power. It shall be large enough to provide adequate space for operation and maintenance of the equipment. In large lift stations, the building shall also enclose the wet well valves, check valves, diesel tank and odor control equipment.
9. 
The building walls shall be eight-inch split face, reinforced CMU (concrete masonry units), khaki or natural color. Vacant cells shall be filled with perlite or vermiculite insulation. Other durable, low maintenance material may be used only as approved by the city engineer.
10. 
The building roof shall be standing seam steel with a 25-year warranty, hemlock green, and with R-19 insulation in the ceiling.
11. 
Auxiliary power shall be supplied by an appropriately sized resident generator set powered by a natural gas engine. In large lift stations or where natural gas is unavailable, the generator set shall be powered by diesel engine.
12. 
Auxiliary power shall be controlled by an automatic switch for power failure, a timer for automated exercising, telemetry and local hand.
13. 
The building shall be equipped with powered cross-ventilation that operates during generator operation. Louvers shall open upon power failure.
14. 
The pump control panel shall have:
a. 
A front panel mounted "start, stop, auto" switch for each pump and a switch to manually select the lead and lag pumps;
b. 
The ability to accept lead/lag selection as a discrete signal from the telemetry panel;
c. 
A dry contract output for use by the telemetry system to indicate each pump that has been called to run; and
d. 
A phase failure relay to shut down pumps and dry contact status output to the telemetry panel.
15. 
A telemetry panel shall be designed, provided and installed to monitor input and output signals as required by the city engineer.
16. 
Field sensors shall be provided and connected to the telemetry panel as directed by the city engineer as follows:
a. 
Limit switches shall be connected to each check valve;
b. 
An "operator in trouble" button with dry contacts shall be located in the house;
c. 
A motion detecting intrusion switch with dry contacts shall be located in the house;
d. 
A smoke detector shall be located in the house.
17. 
The headquarters SCADA software shall be modified to include all signals provided by the RTU and pump control panel required above.
18. 
Software shall include database development, screens, reporting, integration with maintenance and alarm software now or hereafter used by the city.
C. 
All water mains shall be designed in accordance with the State of Washington Department of Social and Health Services, Division of Health. Water mains shall be flushed, disinfected and flushed again. Water samples shall be taken and analyzed in accordance with the requirements of the State Division of Health prior to the connection of any service lines.
D. 
All proposed utilities, together with construction details, shall be submitted on plan and profile paper to the city engineer for approval, and shall be stamped by a professional engineer, licensed to practice in the state of Washington.
E. 
All drainage easements, utility easements, and slope easements required inside and outside the platted area shall be submitted with final plans for approval.
(Ord. 483 § 6.5, 1980; Ord. 812 § 1, 1998; Ord. 1198 § 10, 2017)