A. General: Standard Specifications for Water and Sewer Main Construction in Illinois, and all requirements therein shall be met for any sanitary related work. In addition, all materials and construction of sanitary collection system improvements shall also be in accordance with any requirements, specifications and standards set forth by Fox Metro Water Reclamation District (FMWRD). FMWRD's standard notes and details shall be included in all final engineering plan submittals. If there is a conflict with the requirements of FMWRD and these specifications, the more stringent shall apply.
Public sanitary sewers shall be constructed across the entire frontage of all lots unless otherwise approved by the Village. All lots shall have direct access to a public sanitary sewer. No service sewer shall run across another lot or connect to another service sewer. All lots having nonresidential uses shall have control manholes placed over their sanitary service lines to facilitate monitoring of waste water characteristics.
The minimum diameter for all sanitary sewer mains is eight inches (8"). The maximum allowable distance between manholes is four hundred feet (400'). All sanitary sewer manholes shall be marked at the time of construction with a 4" x 4" hardwood post neatly installed vertically with a minimum four feet (4') bury and a minimum four feet (4') exposed. The top one foot (1') of the post shall be neatly painted red.
B. Sanitary Sewer Pipe Materials: All sanitary sewers shall be PVC (polyvinyl chloride) plastic pipe. All pipe and fittings shall conform to type PSM (ASTM - SDR series) in accordance with ASTM D-1784, D-3034 for SDR 26, D-2241, D-3212, F-412 and F-477. The standard dimension ratio (SDR) or dimension ratio (DR) for PVC pipe shall be 26 as a minimum and shall be dependent on the depth of cover. All PVC plastic pipes and fittings shall have a cell classification of 12454-B or C, as defined in ASTM D-1784.
1. The following pipe materials shall be used for various depths:
a. For applications where the finished cover is fifteen feet (15') or less, PVC, SDR-26 shall be used.
b. For applications where the finished cover is greater than fifteen feet (15'), but less than or equal to twenty feet (20'), PVC, SDR-21 shall be used.
c. For applications where the finished cover is greater than twenty feet (20'), PVC, DR-18 shall be used.
C. Manholes, Frames And Lids: All sanitary manhole frames shall be IDOT type 1 (standard 604001) and all manhole lids shall have "Village of Sugar Grove" and "SANITARY" cast into them.
All final adjustments of castings will be accomplished by the use of concrete adjusting rings set in butyl rope joint sealant; mortar joints will not be allowed. Height of adjusting rings shall not exceed eight inches (8").
D. Sanitary Service Lines: The minimum sanitary sewer service diameter is six inches (6"). Service connections and services shall be constructed in accordance with Fox Metro Water Reclamation District's specifications and ordinances. All sanitary sewer service stubs shall be marked at the time of construction with a 2" x 4" wood post neatly installed vertically, with depth originating at the sewer service cap and extending a minimum four feet (4') above ground. The top one foot (1') of the post shall be neatly painted red.
The location of the ends of all sanitary sewer service locations shall be tied to each property corner with the location being included in the record drawings.
E. Sanitary Sewer Testing:
1. Air Testing: All public sanitary sewers shall be exfiltration tested using air, by the developer or contractor, at his/her expense, under the supervision of the Village Engineer. A copy of the sanitary testing report shall be forwarded each to the Village of Sugar Grove and the Village Engineer.
2. Deflection Testing: A mandrel test (7 point minimum) shall be performed, by the developer, at his/her expense, under the supervision of the Village Engineer, for all PVC pipe thirty (30) days after backfilling. All testing will be done in conformance with the "Standard Specifications for Water and Sewer Main Construction in Illinois", current edition.
3. Closed Circuit Television: FMWRD is responsible for the televising of the sewer lines.
4. Manholes: All sanitary sewer manholes shall be vacuum tested after the frame has been set at finished grade. The test shall conform to the following specifications or other specifications approved by the Village:
a. All lift holes shall be permanently plugged with an approved nonshrink grout. All pipes entering the manhole shall be temporarily blocked with braced plugs.
b. A vacuum of ten inches (10") of mercury shall be applied to the manhole, after which the test pump shall be shut off. The time for the vacuum to drop to nine inches (9") of mercury shall be measured. The manhole/frame assembly shall be approved if the test time is greater than or equal to that listed ASTM C 1244-93 for the manhole diameter and depth specified.
c. If the manhole/frame assembly fails the test, necessary repairs shall be made with a nonshrink grout while the vacuum is still being applied. Retesting shall proceed until a satisfactory test is achieved.
d. If the manhole frame is readjusted after testing, the entire manhole shall be retested.
The Village Engineer shall witness all testing and shall be contacted forty eight (48) hours in advance of all testing. The Village Engineer will forward all test results to FMWRD upon passing results of the entire system.
F. Lift Stations: These standards shall be used for general guidance of design of sanitary lift stations for the Village. The final design shall be subject to the approval of the Village.
1. Stormwater Pumping Stations Prohibited: These standards are for sanitary sewage lift stations. Stormwater pumping stations are not permitted.
2. Design: The sewage collection system and lift station shall be of conventional design. Sewage shall be collected and transported to the lift station by gravity sewers.
3. Force Mains: Force mains shall be sized to carry the initial, intermediate and ultimate flow rates from the tributary area at a velocity of between two feet (2') and eight feet (8') per second. Material shall be PVC, DR-18, AWWA C900 or AWWA C905. At the request of the Village Engineer, gate valves in vaults shall be constructed in the force main at intervals not exceeding six hundred feet (600') to allow quick isolation in the event of a leak. Blow-off valves in vaults shall be constructed at high points in the force main and shall discharge to sanitary sewers where possible. Air release valves shall be placed as necessary and/or directed by the Village Engineer. A continuous locating wire of a size and type to be approved by the Village shall be laid in the force main trench and shall be connected to all valves and extend into the discharge manhole and valve chamber. Force mains shall be tested at one hundred fifty (150) psi for two (2) hours and shall conform with AWWA C-600 and C-603.
4. Lift Stations: Lift stations shall be of the submersible design, have a wet well and valve chamber made of precast concrete and shall have at least two (2) pumps. Pumps shall be centrifugal and be capable of passing three inch (3") diameter solids. The valve chamber shall have a quick disconnect tee fitting to accommodate emergency bypass pumping.
5. Motor Control Center: The motor control center shall have solid state duplex logic. Sewage level in the wet well shall be measured with a pressure transducer. A dial out alarm system, matching that currently in use in the Village, shall be provided. The lift station shall include a backup generator capable of powering the ultimate pump motors. The generator shall be fueled by natural gas. The controls shall be consistent and compatible with the Village's current controls programming manufacture and type.
6. Lift Station Building: The wet well, valve chamber, motor control center, backup generator and all other equipment shall be covered and/or enclosed in a lift station building. The building shall be of frame construction with brick siding. The building doors shall be keyed to match the standard Village lock used for all lift stations. The building shall be accessible from the street by way of a paved driveway at least fifteen feet (15') wide. The building shall comply with all the Village Building Code regulations and shall be heated and ventilated. The subdivider shall follow normal building permit procedures and pay the normal fees for construction of the lift station building.
7. Parts Inventory: The subdivider or developer shall supply an inventory of three (3) sets of each size and type fuse, relay and other plug in type devices used in the lift station motor control center. These items shall be housed in a wall mounted metal cabinet. The subdivider or developer shall also supply a heavy- duty freestanding metal shelf with not less than twenty (20) square feet of shelf space and one fire extinguisher rated for type A, B and C fires.
8. Startup Training; Maintenance Manuals: The subdivider or developer shall provide adequate startup training to the Public Works Department personnel and shall provide three (3) sets of operations and maintenance manuals for all equipment at the lift station. (Ord. 2018-02-20, 2-20-2018)