Chretien T. Voerg, P.E. , Superintendent

Department of Public Works - Division of Pure Waters

347 Old Niskayuna Road

Latham, New York 12110

 

Introduction

The Pure Waters Department maintains and operates the sanitary sewer collection systems, including 400+ miles of pipe and 8000+ manholes, and oversees the treatment of 3.5 million gallons per day of sanitary waste at Mohawk View Water Pollution Control Plant, Onderdonk Avenue. The Department also reviews and issues sanitary sewer connection permits for commercial and residential construction and inspects pipe installation.

Service area includes the Town of Colonie, but not the villages (85% of developed areas have sewer service).

Sanitary sewer cost is billed with the January Town/County tax bill. These charges are shown as units and points with single-family homes paying a flat charge, and commercial, industrial land, and multi-family paying on a usage formula. All new construction of homes and businesses have to extend the public sewer system at no expense to the taxpayers.

 

Note: For continuous or intermittent flow into a drain, as from a pump, ejector, air conditioning equipment, or similar equipment, a fixture unit value of 2 shall be assigned for each gallon per minute of flow at rated capacity.

COMMERCIAL SITE REQUIREMENTS WITH PUMP

1. A duplex pump system must be designed in accordance with the manufacturers recommendations. Request for a single pump installation must be in writing to the department for review and approval.

2. The pump control panel must include an alarm circuit with an audible horn, warning light and reset button. A non-resettable elapsed hour meter must be installed for each pump to record pump run time. Simplex pump units will not require hour meter installation.

3. All electrical wiring for pump installation shall conform to applicable code requirements and manufacturers recommended procedures.

4. Sizing of pump discharge piping is the responsibility of the design engineer or pump manufacturer. For 1 1/4" discharge piping, pipe type shall be PVC Schedule 40 or 80, or PVC SDR 21 using PVC rubber gasketed compression couplings. For 11/2" pipe and larger, pipe type shall be PVC SDR 21 with rubber gasketed bell and spigot. Pump design specifications along with discharge pipe sizing must be submitted for our review.

5. Discharge piping shall be installed with a minimum of 48" cover to prevent freezing. Suitable bedding and backfill material shall be placed to a minimum of 12" above crown of pipe. A single #12 gauge insulated tracer wire, continuous length, shall be installed with the pipe and terminated above grade at the pump control panel for future use in locating the pipe.

6. Where bends are required, PVC Schedule 80 socket type bends are to be used. Bends should be glued to barrel of pipe outside of trench. 90° Bends are not acceptable. Two 45° bends with 2 foot nipple are to be used to make 90° turn. For pipe larger than 2", mechanical joint DIP or rubber gasketed PVC fittings should be utilized.

7. Connection to existing manhole structure shall be core and seal boot type.

8. Burial tape stating "Caution Buried Sewer Below" is to be installed 18"± below finish grade in pipe trench line.

9. A hydrostatic (water) test must be performed on installed force main pipe prior to pump connection. Pipe shall be tested at 100 psi and witnessed by Division of Pure Waters inspector.

10. A cast iron double hand hole trap, fresh air inlet and outside cleanout shall be installed on the building drain piping prior to the pump.

11. Prior to final approval of the grinder pump installation, the following documentation must be submitted to the Pure Waters Office:

a. For existing structures (not new construction), a copy of the UL inspection for all electrical work associated with the pump installation. Copy of UL inspection not required for new construction.

b. Documentation by a pump manufacturer representative that the grinder pump was installed in accordance with the manufacturer's requirements and that the system was startup tested with verification of proper alarm activation.

REQUIREMENTS FOR COMMERCIAL SEWER CONNECTION

1. Plans - The following plans need to be submitted for review prior to issuance of a sanitary sewer connection permit:
a. Site Plan
b. Floor Plan
c. Mechanical/Equipment Layout Plan with Equipment Schedule
d. Plumbing Plan with Fixture and Drain Size Schedule

2. Sewer Elevations (USGS) - The site plan should show proposed finish floor elevation, proposed invert of building drain where it exits the foundation, manhole inverts and the invert of the existing sanitary sewer at the proposed connection point.

3. Materials - The site plan should show type, size and class of pipe to be used for the building sewer. Exterior grease interceptors, manholes, intermediate cleanouts and grinder pumps should be shown on site plan.

4. Sewer Lateral Profile - Proposed sanitary sewer lateral should be shown in profile. The profile should include proposed invert elevation at foundation and at connection to existing sewer; pipe size, type, class and percent of grade; any crossing utility; existing grade and proposed finish grade; any intermediate cleanouts.

5. Sewer Lateral Routing - The site plan should show the proposed routing of the building lateral. All proposed connections to existing manholes, bends, intermediate cleanouts, manholes, existing utilities, significant trees, fences, signs, etc. should be shown on the plan and labeled accordingly.

6. Sewer Details - Proposed cut-in-wye, insertion manhole, grease/oil interceptor, intermediate cleanout, trench detail, grinder pump installation, and specialty items must be shown in a detail and properly labeled.

7. Proposed Sewer Usage - Proposed sewer discharge design flow and estimated water consumption should be shown on plan in note form or in the project narrative.

8. Chemical Usage/Storage - Any significant chemicals to be stored or used on the site should be identified and Material Safety Data Sheets (MSDS) submitted with plans for review.

GRINDER PUMP INSTALLATION REQUIREMENTS
FOR FINAL APPROVAL

Prior to final approval of the grinder pump installation, we will require the following:

For existing structures, a copy of the UL inspection for all electrical work associated with the pump installation. Not required for new construction.

A certification from a representative of the pump manufacturer that the grinder pump was installed in conformance with the manufacturer's requirements and that the system was tested with verification of proper alarm activation.

RESIDENTIAL GRINDER PUMP INSTALLATION REQUIREMENTS

Effective June 18, 1999

1. The grinder pump unit can be installed inside or outside of the building. Pump model would depend on installation location (Interior vs. Exterior).

2. The grinder pump control panel must include an alarm circuit containing an audible horn, warning light and reset button.

3. All electrical wiring for pump installation shall conform to applicable electrical code requirements.

4. Discharge piping shall be in accordance with pump manufacturer's/supplier's recommendation. Pipe type shall be PVC SDR 21 rubber gasketed bell and spigot joint pipe for size 1 ½"or larger. For 1 ¼" pipe, PVC Schedule 80 or PVC SDR 21 can be used with PVC compression couplings. Where 1 ¼" PVC bends are necessary, socket type Schedule 40 or Schedule 80 bends are to be used. Bends are to be glued to barrel of pipe outside of trench. 90* bends are not acceptable. Two 45* bends with 2 foot nipple are to be used to make 90* turn.

5. Connection to existing manhole shall be core and seal boot type.

6. Discharge piping shall be installed with a minimum of 48" cover to prevent freezing. Suitable bedding and backfill material shall be placed to a minimum of 12" above crown of pipe.

7. A #12 Gauge copper insulated tracer wire, continuous, shall be buried with pipe and terminated above grade at pump control panel for locating pipe in the future..

8. Burial tape stating "Caution Buried Sewer Below" is to be placed 18"* below finish grade in pipe trench line centered over pipe.

9. A hydrostatic (water) pressure test must be performed on discharge piping prior to pump connection. The pipe shall be pressurized to 90 psi and witnessed by a Pure Waters inspector.

10. All grinder pump installations shall include a cast iron double hand hole trap and fresh air inlet. Exterior pump installations will require an outside cast iron cleanout to be installed on the building drain.

11. Prior to final approval of the grinder pump installation, the following documentation must be submitted to the Pure Waters Office:

a. For existing structures (not new construction), a copy of the UL inspection for all electrical work associated with the pump installation. Copy of UL inspection not required for new construction.

b. Documentation by a pump manufacturer representative that the grinder pump was installed in accordance with the manufacturer's requirements and that the system was startup tested with verification of proper alarm activation.

Forms

Sewer Permit Application


 How to Contact the Pure Waters Department:

Address:
Department of Public Works Division of Pure Waters
347 Old Niskayuna Road
Latham, New York 12110

Phone Number:
(518) 783-2766, ext. 4

E-Mail:
purewaters@colonie.org
Fax Number: (518) 783-2883

 

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Last updated 06/19/08
URL:http://www.colonie.org/pure waters