N.J. Admin. Code § 8:13-2.15

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

Section 8:13-2.15 - Water purification system(s)

(a) An ultraviolet (UV) bacteriological reduction unit shall be installed to provide process seawater meeting a bacteriological quality of no detectable organisms of the coliform group as measured by a recognized multi-tube MPN per 100 milli-liter test for potable water or a test of equivalent sensitivity sampled at the UV unit outlet unless this quality can be met naturally and the water is not recirculated. A recirculating seawater system shall be so designed, installed and operated to assure that the water received UV treatment prior to entering the system.

1. The Department will consider alternate methods of bacteriological reduction if adequate scientific information is presented showing that the equipment will produce process water of the required bacteriological quality; proper testing is conducted; and the practicability of equipment can be demonstrated.

2. Chemicals such as chlorine or similar disinfecting compounds shall not be used to treat the process seawater, unless the compounds in the water are completely inactivated prior to introduction into the distribution system.

(b) The ultraviolet (UV) sterilization unit shall meet the following minimum requirements:

1. The unit shall be designed and operated to deliver at peak load at least one gallon per minute of treated water per U.S. bushel of clams;

2. The unit shall have water flow control device(s) to prevent the water flow exceeding the capacity of the unit regardless of the incoming pressure; and

3. A meter and recording chart shall be attached to the unit which will continuously monitor and record the following:

i. Any changes in ultraviolet transmissivity of the water to be treated; and

ii. Depreciation or reduction in the output of the intensity of the ultraviolet lamps;

4. The recorder chart shall be calibrated in hours and days and the chart shall be marked to indicate "0", "24", "48", and "72" hour intervals for each process batch. Alternate types of recorder units shall be approved by the Department prior to use and shall be capable of providing the required information;

5. The ultraviolet system shall have provisions for in-place cleaning of the interior of the purification chamber and ultraviolet tubes; and

6. The ultraviolet tubes shall be replaced when they reach a point of 60 percent efficiency or their continued use would exceed the manufacturer's recommendation for useful lamp life, whichever occurs first.

N.J. Admin. Code § 8:13-2.15

Amended by R.2000 d.455, effective 11/6/2000.
See: 32 New Jersey Register 416(a), 32 New Jersey Register 3982(b).
In (a), rewrote the introductory paragraph.
Amended by R.2006 d.173, effective 5/15/2006.
See: 37 New Jersey Register 3767(a), 37 N.J.R. 3907(a), 38 New Jersey Register 2153(a).
In (a)6, substituted "their continued use would exceed the manufacturer's recommendation for useful lamp life, whichever occurs first" for "7,500 hours old".