N.J. Admin. Code § 7:9A-9.1

Current through Register Vol. 56, No. 21, November 4, 2024

Section 7:9A-9.1 - General requirements for effluent distribution

(a) Discharge of effluent from the septic tank or grease trap to the disposal field and distribution of effluent within the disposal field shall be accomplished by one of the following methods:

1. The gravity flow method whereby the pretreatment unit discharges directly to a single distribution lateral, an inter-connected network of distribution laterals or to a distribution box discharging to two or more individual distribution laterals;

2. The gravity dosing method whereby the pretreatment unit discharges to a dosing tank with a pump or siphon which in turn discharges to a single distribution lateral, an inter-connected network of distribution laterals or to a distribution box discharging to two or more individual distribution laterals; or

3. The pressure dosing method whereby the pretreatment unit discharges to a dosing tank with a pump or siphon which in turn discharges to an inter-connected network of distribution laterals designed to discharge effluent under pressure.

(b) Each lateral in the distribution network shall receive an equal hydraulic loading. The use of serial distribution is prohibited.

(c) The use of gravity flow is restricted to those cases where less than 600 linear feet of distribution laterals are used and where the relative locations and elevations of the system components will allow gravity flow from the building sewer to the pretreatment unit and on through the distribution network.

(d) Alternating siphons or pumps may be used to alternately dose and rest two or more disposal fields provided that no field or portion of a field receives more than the maximum daily hydraulic loading rate allowed in 7:9A-10.2. Soils with a permeability faster than six inches per hour or a percolation rate faster than 15 minutes per inch shall not be rested for periods longer than one day unless pressure distribution is used and shall not receive more than 25 percent of the maximum allowed daily hydraulic loading in a single dose.

N.J. Admin. Code § 7:9A-9.1