Current through Register Vol. 46, No. 39, September 25, 2024
(a) Description.
Zone 6 is Delaware Bay extending from RM 48.2 to RM 0.0, the Atlantic Ocean,
including the tidal portions of the tributaries thereof.
(b) Water uses to be protected. The quality
of zone 6 waters shall be maintained in a safe and satisfactory condition for
the following uses:
(1) industrial water
supplies after reasonable treatment;
(2)
(i)
maintenance and propagation of resident fish and other aquatic life;
(ii) maintenance and propagation of
shellfish;
(iii) passage of
anadromous fish;
(iv)
wildlife;
(3)
recreation; and
(4)
navigation.
(c) Stream
quality objectives.
(1) Dissolved oxygen:
(i) 24-hour average concentration shall not
be less than 6.0 mg/l; and
(ii) not
less than 5.0 mg/l at any time unless due to natural conditions.
(2) Temperature.
(i) Shall not be raised above ambient by more
than:
(a) 4° F (2.2° C) during September
through May; nor
(b) 1.5° F (0.8°
C) during June through August;
(ii) Nor shall maximum temperatures exceed
85° F (29.4° C). (See section
861.12[f][4] of
this Title.)
(3) pH.
Between 6.5 and 8.5.
(4) Phenols.
Maximum 0.01 mg/l, unless exceeded due to natural conditions.
(5) Threshold odor number. Not to exceed 24
at 60° C.
(6) Synthetic detergents
(M.B.A.S.). Maximum 30-day average 1.0 mg/l.
(7) Radioactivity:
(i) alpha emitters, maximum 3 pc/l
(picocuries per liter); and
(ii)
beta emitters, maximum 1,000 pc/l.
(8) Bacteria.
(i) Fecal coliform. Maximum geometric average
200 per 100 milliliters.
(ii)
Enterococcus. Maximum geometric average 35 per 100 milliliters.
(iii) Coliform. MPN (most probable number)
not to exceed Federal shellfish standards in designated shellfish
areas.
(9) Turbidity.
Unless exceeded due to natural conditions:
(i)
maximum 30-day average 40 units; and
(ii) maximum 150 units.
(10) Alkalinity. Between 20 and 120
mg/l.
(11) Toxic pollutants.
(i) Applicable criteria to protect the taste
and odor of ingested water and fish are presented in Table 4.
(ii) Applicable marine stream quality
objectives for the protection of aquatic life are presented in Table
5.
(iii) Applicable marine stream
quality objectives for the protection of human health are presented in Tables 6
and 7.
(d)
Effluent quality requirements.
(1) All
discharges shall meet the effluent quality requirements of this Part.
(2) The carbonaceous oxygen demand from an
outfall (exclusive of storm water bypass) shall not exceed that assigned by the
commission to maintain stream quality objectives.
The application of sections 860.22(c)(8), 862.28(c)(8)
and 860.29(c)(8) of this Part to all existing dischargers in Zones 2, 3 and 4
is temporarily suspended from October 1, 1987 to April 30, 1988, unless
reinstated earlier in whole or in part by order of the executive director. This
temporary suspension shall expire on May 1,
1988.
