N.J. Admin. Code § 7:14A-12.4 - Minimum BOD[5] effluent standards
(a) For direct
discharges to surface water for which BOD[5] or CBOD[5] water quality based
effluent limitations based upon water quality studies acceptable to the
Department have not been developed but are required under
N.J.A.C.
7:9B-1.5 or 1.6, the minimum treatment
requirements for BOD[5] specified in (b) below shall apply except when more
stringent effluent limitations are required by:
1. Section 301 or 306 of the Federal
Act;
2. The Delaware River Basin
Commission or the Interstate Environmental Commission, as applicable.
(b) The minimum BOD[5] treatment
requirements are as listed in the following table:
(c) In applying the minimum treatment
requirements contained in (b) above, the following substitutions may be made:
1. For industrial treatment works, TOC or COD
may be substituted for BOD[5] when a long-term BOD[5]:COD or BOD[5]:TOC
correlation has been demonstrated. In the absence of data to establish a long
term correlation, the BOD[5]:COD ratio shall be assumed to be 1:2 and the
BOD[5]:TOC ratio shall be assumed to be 1:1. If subsequent data are submitted
which indicate that a different BOD[5]:COD or BOD[5]:TOC ratio would be more
appropriate, a written request shall be submitted to the Department;
and
2. For industrial or domestic
treatment works, CBOD[5] may be substituted for BOD[5] as follows:
i. With prior approval of each regulatory
agency with jurisdiction over the discharge, when applicable, if the effluent
standard for BOD[5] is 30/45 mg/L, a CBOD[5] effluent standard of 25/40 mg/L,
as allowed for in
N.J.A.C.
7:14A-12.2(c)1 and 2, may
be substituted; or
ii. With prior
approval of each regulatory agency with jurisdiction over the discharge, when
applicable, if the effluent standard for BOD[5] is other than 30/45 mg/L,
CBOD[5] may be substituted for BOD[5] when a long term BOD[5]:CBOD[5]
correlation has been demonstrated. When a request for a substitution of CBOD[5]
for BOD[5] is made, the applicant shall submit data demonstrating the
appropriate BOD[5]:CBOD[5] correlation. The correlation demonstration shall
consist of a minimum of 12 BOD[5] and CBOD[5] analyses of split samples
obtained at a frequency of twice per month, subject to the following
restrictions:
(1) For limitations applicable
year round, or for limitations applicable during warm weather (for example, May
through October), the samples shall be obtained during the months of May
through October.
(2) For
limitations applicable during cold weather (for example, November through
April), the samples shall be obtained during the months of November through
April.
(3) The monthly and weekly
BOD[5] effluent limitations shall be recalculated as CBOD[5] monthly and weekly
effluent limitations using the approved correlation factor.
(d) Direct
discharges to surface water from industrial treatment works shall be exempt
from the minimum BOD[5] effluent standards in (b) above, when:
i. Statistically valid data indicate that the
maximum projected BOD[5] concentration is consistently below the applicable
effluent standard; or
ii. The
Department determines that, based on wastewater generating activities, no
potential exists for the discharge to add BOD[5], COD or TOC.
Notes
See: 29 New Jersey Register 3822(a).
Administrative change.
See: 34 New Jersey Register 1902(a).
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