Section 374.101  Introduction

These design criteria are to be used by the Illinois Environmental Protection Agency in reviewing 35 Ill. Adm. Code 309, Subpart B permit applications for pressure sewer systems including grinder pump systems and septic tank effluent pumping (STEP) systems.

(Source:  Amended at 21 Ill. Reg. 12439, effective August 28, 1997)

Section 374.102  Conventional System Preference

If possible, the development proposed shall be served by a conventional sewer system.  A conventional sewer system is defined as gravity sewers or a conventionally designed pumping station.

(Source:  Amended at 21 Ill. Reg. 12439, effective August 28, 1997)

Section 374.103  System Pressure Maintenance

The owner or operator of a pressure sewer system shall provide a method of inspection or authorization to assure that users of the system maintain the original design operating pressures of the system when repairing, modifying or replacing any of the pumping equipment on the user's premises.

(Source:  Amended at 21 Ill. Reg. 12439, effective August 28, 1997)

Section 374.104  Sludge Disposal

Permits for STEP systems shall not be issued unless the applicant provides satisfactory evidence that adequate facilities are available for the pumping and disposal of septic tank sludge.

(Source:  Section 374.104 repealed and new Section 374.104 renumbered from Section 374.105 at 21 Ill. Reg.12439, effective August 28, 1997)

Section 374.105  Sludge Disposal (Renumbered)

(Source:  Section 374.105 renumbered to Section 374.104 at 21 Ill. Reg. 12439, effective August 28, 1997)

Section 374.106  Pressure System Failure (Repealed)

(Source:  Repealed at 21 Ill. Reg. 12439, effective August 28, 1997)

Section 374.201  Duplex Pumps

If grinder pumps are serving more than one building, duplex pumping units shall be required.  If the pumps are to be installed for individual buildings, a single pumping unit may be used.

(Source:  Amended at 21 Ill. Reg. 12439, effective August 28, 1997)

Section 374.202  Minimum Size

The grinder pump "wet well" should have a minimum size of 150 gallons.

Section 374.203  Valves

Valve arrangements and connection shall be made so as to allow quick removal and replacement of equipment for maintenance purposes.

Section 374.204  Non-corrosive Equipment

Non-corrosive or corrosion-resistant equipment shall be specified for STEP systems.

Section 374.205  Influent Pumping

In the STEP systems, pump well influent piping should enter at the bottom of the well to prevent cascading of septic effluent in order to minimize both odor and corrosion.

Section 374.206  Pump Vaults

All pump vaults shall be equipped with locking covers.

Section 374.207  Marked Sewer Lines

Where polyvinyl chloride (PVC) pressure mains are to be installed in the vicinity of similar water supply lines, the sewer line should be clearly marked to prevent possible future cross-connections.

(Source:  Amended at 21 Ill. Reg. 12439, effective August 28, 1997)

Section 374.208  Alarm Systems

An alarm system shall be provided in the home where grinder units are installed in the basement to alert the home owner in case of pump malfunction.  A visual alarm system shall be provided for those pumping units installed in a separate pumping vault outside of the home.

(Source:  Amended at 21 Ill. Reg. 12439, effective August 28, 1997)