N.J. Admin. Code § 7:14A-23.5

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

Section 7:14A-23.5 - Engineering design reports to be submitted to the Department with treatment works approval applications

(a) Engineering reports required to be submitted pursuant to 7:14A-22.8 for domestic treatment systems shall, at a minimum, include:

1. A complete description of the selected waste treatment system;

2. For the modification of an existing system which has not previously been granted a treatment works approval, the capacities of the existing units and a brief description of the operation of each, and a statement concerning which units are existing and which are proposed at the time of the application. If there exists a previously issued treatment works approval for the subject facility, the date of issuance and the TWA number shall be provided;

3. The basis and computations for the projected wastewater flow;

4. Hydraulic profiles of the flow of wastewater through the system;

5. A unit by unit mass balance for all discharge parameters;

6. The ultimate disposal location of all effluent;

7. The basis and computations for average and peak flow requirements;

8. The expected composition of the influent and effluent from the treatment system including the average, maximum and minimum values of the pollutant parameters specified in the facility's NJPDES permit;

9. An evaluation of the quantity and quality of any and all residuals generated and projected to be generated, including a hydraulic profile and unit by unit mass balance for the flow of residuals through the system;

10. Documentation of adequate storage and handling facilities for residuals;

11. Provisions for the ultimate management of residuals pursuant to the State Solid Waste Management Plan and/or the Statewide Sludge Management Plan, as applicable. For proposed upgrading or expansion of domestic treatment works, sludge management planning forms may be submitted pursuant to the Statewide Sludge Management Plan, Appendix K, to satisfy this requirement;

12. Details of flow monitoring and control, alarm systems, auxiliary power, storage facilities for treatment chemicals and wastes, and a plan for bypassing units during construction or maintenance; and

13. A signed and sealed statement from the New Jersey licensed professional engineer who designed the treatment works attesting to the proposed treatment works' ability, as designed, to meet the requirements of this subchapter and to attain all applicable discharge limits.

(b) For treatment works applications involving the temporary or permanent use of holding tanks, the engineering reports required to be submitted by 7:14A-22.13 and 22.8 shall include:

1. A description of the high water alarm to be provided to alert the responsible persons that the holding tank has reached 75 percent of its capacity and which will allow sufficient time to take appropriate measures to prevent overflows;

2. A description of provisions for aeration at a rate of two cubic feet per minute per 1,000 gallons to prevent septic conditions and solids settling;

3. Identification of a source of washdown water for routine maintenance and emergency situations, adequately protected by a backflow prevention device;

4. A description of the holding tank area, including adequate measures to protect it from vandalism and safeguards for public health and safety;

5. Engineering drawings containing construction details for all system components;

6. Specifications including construction practices and operation and maintenance procedures; and

7. Sizing of holding tanks which, at a minimum, provides two days of waste storage, as determined in accordance with the projected flow requirements in 7:14A-23.3.

(c) Engineering reports required to be submitted for projects involving the use of equalization tanks within a collection system, pursuant to 7:14A-22.15, shall include the following:

1. A description of the method for placing the tank into operation and the timing and procedure for releasing the effluent back into the collection system, including quantity of flow and duration held;

2. Average and peak flow requirements;

3. A description of the high water alarm to be provided to alert the responsible persons that the equalization tank has reached 75 percent of its capacity and which allows sufficient time to take appropriate measures to prevent overflows;

4. A description of the equalization tank area, including adequate measures to protect it from vandalism and safeguards for public health and safety such as covers, overflow protection, fencing, etc.;

5. The engineering drawings containing construction details for all system components; and

6. The specifications including construction practices and operation and maintenance procedures.

(d) Engineering reports required to be submitted pursuant to 7:14A-22.14 and 22.8, for flow diversion, shall include, but are not limited to, the following:

1. The existing and anticipated average and peak flow events within the collection system;

2. The ultimate disposal location of all effluent; and

3. A report outlining the procedures to be used in the hauling/diversion operation, including, but not limited to, the location at which the wastewater will be withdrawn, the frequency and time of withdrawal, and the effect that the procedure may have upon the treatment capabilities of both treatment facilities.

(e) Engineering reports required to be submitted pursuant to 7:14A-22.8, for industrial treatment works approval applications shall include, but are not limited to:

1. A complete description of waste treatment system;

2. A mass balance and, if temperature change across any unit will exceed 10 degrees Celsius, a heat balance;

3. The ultimate destination of all wastewater, sludge and residuals;

4. Average and peak flow requirements and rationale for design;

5. A listing of all pollutants, including regular and intermittent flows, and expected composition that may enter the system;

6. The composition and quality of all sludge generated, name and registration number of the sludge hauler, frequency and parameters for periodic analysis;

7. Documentation of adequate storage and handling facilities for residuals;

8. Provisions for the ultimate management of residuals pursuant to the State Solid Waste Management Plan and/or the Statewide Sludge Management Plan, as applicable;

9. The expected composition of effluent from the treatment system;

10. A listing of any standards, ordinances, permits, court orders, contracts, etc. which regulate the discharge;

11. An evaluation of the capability of the system to meet the most stringent applicable effluent limitation for each pollutant parameter from the NJPDES permit or other authorizations such as an administrative or judicial consent order;

12. Potential spills from within the industrial facility which may enter the treatment system and provisions for treatment and containment;

13. Provisions for metering and monitoring of the effluent;

14. A discussion of: instrumentation, reliability of system components, storage and handling facilities, provisions for treatment during construction, safety features, laboratory facilities and analytical capabilities; and

15. A plan for bypassing units during maintenance or down time.

N.J. Admin. Code § 7:14A-23.5