Ohio Admin. Code 3745-1-35

Current through all regulations passed and filed through November 4, 2024

Section 3745-1-35 - Aquatic life and wildlife criteria

[Comment: For dates of non-regulatory government publications, publications of recognized organizations and associations, federal rules and federal statutory provisions referenced in this rule, see rule 3745-1-03 of the Administrative Code.]

[Comment: For definitions of the use designation, see rule 3745-1-07 of the Administrative Code. For all other definitions, see rule 3745-1-02 of the Administrative Code.]

(A) The chemical-specific criteria listed in this rule apply as "Outside Mixing Zone" or "Inside Mixing Zone Maximum." For the purpose of setting water quality based effluent limits, the criteria which apply "Outside Mixing Zone" shall be met after the effluent and the receiving water are reasonably well mixed as provided in rules 3745-1-06 and 3745-2-05 of the Administrative Code. The criteria listed as "Inside Mixing Zone Maximum" shall be applicable as end-of-pipe maximum effluent limits or as criteria to be met within a short distance of the effluent pipe except as provided in rule 3745-2-08 of the Administrative Code. Possible exceptions regarding the application of these criteria may apply as described in paragraph (C) of rule 3745-1-07 of the Administrative Code.

(B) The water quality criteria adopted in, or developed pursuant to, this rule shall apply as follows:

(1) The "Inside Mixing Zone Maximum" and "Outside Mixing Zone Maximum" water quality criteria for the protection of aquatic life, or site-specific modifications thereof, shall apply to all water bodies. Water quality criteria applicable to specific aquatic life use designations are listed where appropriate. The "Inside Mixing Zone Maximum" and "Outside Mixing Zone Maximum" water quality criteria identified for the warmwater habitat use designation apply to water bodies not assigned an aquatic life use designation.

(2) The "Outside Mixing Zone Average" water quality criteria for the protection of aquatic life, or site-specific modifications thereof, shall apply to all water bodies except those water bodies assigned the limited resource water use designation. However, the limited resource water "Outside Mixing Zone Average" water quality criteria for dissolved oxygen, pH and temperature apply to water bodies assigned the limited resource water use designation.

Water quality criteria applicable to specific aquatic life use designations are listed where appropriate. The "Outside Mixing Zone Average" water quality criteria identified for the warmwater habitat use designation apply to water bodies not assigned an aquatic life use designation.

(3) Criteria for protection of wildlife, or site-specific modifications thereof, are "Outside Mixing Zone Average" water quality criteria and shall apply to all water bodies located in the lake Erie drainage basin.

(C) For any pollutant for which it is demonstrated that a methodology or procedure cited in this chapter is not scientifically defensible, the director may apply an alternative methodology or procedure acceptable under 40 C.F.R. 131 when developing water quality criteria.

(D) Protection of aquatic life - whole-effluent approach.

Whole-effluent toxicity levels shall be applied in accordance with rules 3745-1-44 and 3745-33-07 of the Administrative Code.

Table 35-1. Statewide water quality criteria for the protection of aquatic life. Page 1 of 2

Chemical	Form1	Units2	IMZM3	OMZM3	OMZA3
Ammonia-N (WWH)	T	mg/l	--	Table 35-2	Table 35-5
Ammonia-N (EWH)	T	mg/l	--	Table 35-3	Table 35-6
Ammonia-N (MWH)	T	mg/l	--	Table 35-2	Table 35-7
Ammonia-N (SSH4)	T	mg/l	--	Table 35-4	a
Ammonia-N (CWH)	T	mg/l	--	Table 35-4	Table 35-8
Ammonia-N (LRW)	T	mg/l	--	Table 35-2	--
Arsenic	D6	µg/l	680	340	150
Arsenic	TR7	µg/l	680	340	150
Cadmium8
Chlorine (WWH, EWH, MWH, CWH)	R	µg/l	--	19	11
Chlorine (LRW)	R	µg/l	--	19	--
Chlorine (SSH4)	R	µg/l	--	b	b
Chromium8
Chromium VI	D	µg/l	31	16	11
Copper8
Cyanide (Lake Erie drainage basin)	free	µg/l	44	22	5.2
(Ohio river drainage basin) (WWH, EWH, MWH)	free	µg/l	92	46	12
(LRW)	free	µg/l	92	46	--
(SSH4, CWH)	free	µg/l	45	22	5.2
Dieldrin	T	µg/l	0.47	0.24	0.056
Dissolved oxygen5(WWH)	T	mg/l	--	4.0	5.0
Dissolved oxygen5(EWH)	T	mg/l	--	5.0	6.0
Dissolved oxygen5(MWH)	T	mg/l	--	3.0c	4.0
Dissolved oxygen5(SSH4)	T	mg/l	--	a	a
Dissolved oxygen5(CWH)	T	mg/l	--	6.0	7.0
Dissolved oxygen5(LRW)	T	mg/l	--	2.0	3.0
Dissolved solids	T	mg/l	--	--	1500d
Endrin	T	µg/l	0.17	0.086	0.036
Lead8
Lindane	T	µg/l	1.9	0.95	--
Mercury	D6	µg/l	2.9	1.4	0.77
Mercury	TR7	µg/l	3.4	1.7	0.91
Nickel8
Parathion	T	µg/l	0.13	0.065	0.013
Chemical	Form1	Units2	IMZM3	OMZM3	OMZA3
Pentachlorophenol9 pH (WWH, MWH)	--	s.u.	--	--	6.5 - 9.0
pH (EWH, CWH)	--	s.u.	--	--	e
pH (SSH4)	--	s.u.	--	--	a
pH (LRW)	--	s.u.	--	--	6.5 - 9.0f
Selenium	D6	µg/l	--	--	4.6
Selenium	TR7	µg/l	--	--	5.0
Temperature (WWH, MWH)	--	OF(OC)	--	Table 35-14	Table 35-14
Temperature (EWH, CWH)	--	OF(OC)	--	g	g
Temperature (SSH4)	--	OF(OC)	--	a	a
Temperature (LRW)	--	OF(OC)	--	98(37)	94(34)
Zinc8

¹ D = dissolved; R = total residual; T = total; TR = total recoverable.

² mg/l = milligrams per liter (parts per million); µg/l = micrograms per liter (parts per billion); s.u. = standard units; °F = degrees fahrenheit; °C = degrees celsius.

³ IMZM = inside mixing zone maximum; OMZM = outside mixing zone maximum; OMZA = outside mixing zone average.

⁴ This aquatic life habitat use designation is in effect only during the months of October to May.

⁵ For dissolved oxygen, OMZM means outside mixing zone minimum and OMZA means outside mixing zone minimum twenty-four-hour average.

⁶ These criteria are implemented by multiplying them by a translator approved by the director pursuant to rule 3745-2-04 of the Administrative Code.

⁷ These criteria apply in the absence of a translator approved by the director pursuant to rule 3745-2-04 of the Administrative Code.

⁸ These criteria are water hardness dependent. See table 35-9 of this rule.

⁹ These criteria are water pH dependent. See table 35-10 of this rule.

^a This criterion is the same as that for the aquatic life use designation in effect June to September. See footnote 4.

^b No chlorine is to be discharged.

^c The dissolved oxygen minimum at any time criterion for modified warmwater habitats in the Huron/Erie lake plain ecoregion, as identified in rules 3745-1-08 to 3745-1-30 of the Administrative Code, is 2.5 mg/l.

^d Equivalent 25°C specific conductance value is 2400 micromhos/cm.

^e pH is to be 6.5 - 9.0, with no change within that range attributable to human-induced conditions.

^f Acid mine drainage streams over sandstone geotype are exempt from the pH criterion.

^g At no time shall the water temperature exceed the temperature which would occur if there were no temperature change attributable to human activities.

Table 35-2.

Warmwater habitat, modified warmwater habitat and limited resource water

outside mixing zone maximum total ammonia-nitrogen criteria (mg/l).

pH	6.5	6.7	6.9	7.0	7.1	7.2	7.3	7.4	7.5	7.6	7.7	7.8	7.9	8.0	8.1	8.2	8.3	8.4	8.5	8.6	8.8	9.0
Temp. (oC) 0	13.0	13.0	13.0	13.0	13.0	13.0	13.0	13.0	13.0	13.0	13.0	13.0	12.7	10.6	8.4	6.7	5.4	4.3	3.4	2.7	1.8	1.1
1	13.0	13.0	13.0	13.0	13.0	13.0	13.0	13.0	13.0	13.0	13.0	13.0	12.5	10.5	8.3	6.6	5.3	4.2	3.4	2.7	1.7	1.1
2	13.0	13.0	13.0	13.0	13.0	13.0	13.0	13.0	13.0	13.0	13.0	13.0	12.3	10.3	8.2	6.5	5.2	4.2	3.3	2.7	1.7	1.1
3	13.0	13.0	13.0	13.0	13.0	13.0	13.0	13.0	13.0	13.0	13.0	13.0	12.1	10.2	8.1	6.5	5.2	4.1	3.3	2.6	1.7	1.1
4	13.0	13.0	13.0	13.0	13.0	13.0	13.0	13.0	13.0	13.0	13.0	13.0	12.0	10.1	8.0	6.4	5.1	4.1	3.3	2.6	1.7	1.1
5	13.0	13.0	13.0	13.0	13.0	13.0	13.0	13.0	13.0	13.0	13.0	13.0	11.9	9.9	7.9	6.3	5.0	4.0	3.2	2.6	1.7	1.1
6	13.0	13.0	13.0	13.0	13.0	13.0	13.0	13.0	13.0	13.0	13.0	13.0	11.7	9.8	7.8	6.3	5.0	4.0	3.2	2.6	1.7	1.1
7	13.0	13.0	13.0	13.0	13.0	13.0	13.0	13.0	13.0	13.0	13.0	13.0	11.6	9.7	7.8	6.2	5.0	4.0	3.2	2.6	1.7	1.1
8	13.0	13.0	13.0	13.0	13.0	13.0	13.0	13.0	13.0	13.0	13.0	13.0	11.5	9.6	7.7	6.1	4.9	3.9	3.2	2.5	1.7	1.1
9	13.0	13.0	13.0	13.0	13.0	13.0	13.0	13.0	13.0	13.0	13.0	13.0	11.4	9.6	7.6	6.1	4.9	3.9	3.1	2.5	1.7	1.1
10	13.0	13.0	13.0	13.0	13.0	13.0	13.0	13.0	13.0	13.0	13.0	13.0	11.3	9.5	7.6	6.0	4.8	3.9	3.1	2.5	1.6	1.1
11	13.0	13.0	13.0	13.0	13.0	13.0	13.0	13.0	13.0	13.0	13.0	13.0	11.2	9.4	7.5	6.0	4.8	3.9	3.1	2.5	1.6	1.1
12	13.0	13.0	13.0	13.0	13.0	13.0	13.0	13.0	13.0	13.0	13.0	13.0	11.1	9.3	7.5	6.0	4.8	3.8	3.1	2.5	1.6	1.1
13	13.0	13.0	13.0	13.0	13.0	13.0	13.0	13.0	13.0	13.0	13.0	13.0	11.1	9.3	7.4	5.9	4.8	3.8	3.1	2.5	1.7	1.1
14	13.0	13.0	13.0	13.0	13.0	13.0	13.0	13.0	13.0	13.0	13.0	13.0	11.0	9.2	7.4	5.9	4.7	3.8	3.1	2.5	1.7	1.1
15	13.0	13.0	13.0	13.0	13.0	13.0	13.0	13.0	13.0	13.0	13.0	12.9	10.9	9.2	7.4	5.9	4.7	3.8	3.1	2.5	1.7	1.1
16	13.0	13.0	13.0	13.0	13.0	13.0	13.0	13.0	13.0	13.0	13.0	12.8	10.9	9.2	7.3	5.9	4.7	3.8	3.1	2.5	1.7	1.2
17	13.0	13.0	13.0	13.0	13.0	13.0	13.0	13.0	13.0	13.0	13.0	12.8	10.8	9.1	7.3	5.9	4.7	3.8	3.1	2.5	1.7	1.2
18	13.0	13.0	13.0	13.0	13.0	13.0	13.0	13.0	13.0	13.0	13.0	12.7	10.8	9.1	7.3	5.8	4.7	3.8	3.1	2.5	1.7	1.2
19	13.0	13.0	13.0	13.0	13.0	13.0	13.0	13.0	13.0	13.0	13.0	12.7	10.8	9.1	7.3	5.8	4.7	3.8	3.1	2.5	1.7	1.2
20	13.0	13.0	13.0	13.0	13.0	13.0	13.0	13.0	13.0	13.0	13.0	12.7	10.7	9.1	7.3	5.8	4.7	3.8	3.1	2.5	1.7	1.2
21	13.0	13.0	13.0	13.0	13.0	13.0	13.0	13.0	13.0	13.0	13.0	12.6	10.7	9.1	7.3	5.8	4.7	3.8	3.1	2.6	1.7	1.2
22	13.0	13.0	13.0	13.0	13.0	13.0	13.0	13.0	13.0	13.0	13.0	12.6	10.7	9.0	7.3	5.9	4.7	3.8	3.1	2.6	1.8	1.3
23	13.0	13.0	13.0	13.0	13.0	13.0	13.0	13.0	13.0	13.0	13.0	12.6	10.7	9.1	7.3	5.9	4.7	3.9	3.2	2.6	1.8	1.3
24	13.0	13.0	13.0	13.0	13.0	13.0	13.0	13.0	13.0	13.0	13.0	12.6	10.7	9.1	7.3	5.9	4.8	3.9	3.2	2.6	1.8	1.3
25	13.0	13.0	13.0	13.0	13.0	13.0	13.0	13.0	13.0	13.0	13.0	12.6	10.7	9.1	7.3	5.9	4.8	3.9	3.2	2.6	1.9	1.3
26	13.0	13.0	13.0	13.0	13.0	13.0	13.0	13.0	13.0	13.0	13.0	11.8	10.0	8.5	6.8	5.5	4.5	3.7	3.0	2.5	1.8	1.3
27	13.0	13.0	13.0	13.0	13.0	13.0	13.0	13.0	13.0	13.0	12.8	11.0	9.4	8.0	6.4	5.2	4.2	3.5	2.8	2.4	1.7	1.2
28	13.0	13.0	13.0	13.0	13.0	13.0	13.0	13.0	13.0	13.0	12.0	10.3	8.8	7.5	6.0	4.9	4.0	3.3	2.7	2.2	1.6	1.2
29	13.0	13.0	13.0	13.0	13.0	13.0	13.0	13.0	13.0	12.9	11.2	9.6	8.2	7.0	5.7	4.6	3.7	3.1	2.5	2.1	1.5	1.1
30	13.0	13.0	13.0	13.0	13.0	13.0	13.0	13.0	13.0	12.1	10.5	9.0	7.7	6.6	5.3	4.3	3.5	2.9	2.4	2.0	1.5	1.1

Table 35-3.

Exceptional warmwater habitat

outside mixing zone maximum total ammonia-nitrogen criteria (mg/l).

pH	6.5	6.7	6.9	7.0	7.1	7.2	7.3	7.4	7.5	7.6	7.7	7.8	7.9	8.0	8.1	8.2	8.3	8.4	8.5	8.6	8.8	9.0
Temp. (oC) 0	13.0	13.0	13.0	13.0	13.0	13.0	13.0	13.0	13.0	12.6	10.9	9.3	7.8	6.6	5.2	4.2	3.3	2.6	2.1	1.7	1.1	0.7
1	13.0	13.0	13.0	13.0	13.0	13.0	13.0	13.0	13.0	12.4	10.7	9.1	7.7	6.5	5.2	4.1	3.3	2.6	2.1	1.7	1.1	0.7
2	13.0	13.0	13.0	13.0	13.0	13.0	13.0	13.0	13.0	12.2	10.6	9.0	7.6	6.4	5.1	4.1	3.2	2.6	2.1	1.6	1.1	0.7
3	13.0	13.0	13.0	13.0	13.0	13.0	13.0	13.0	13.0	12.1	10.4	8.9	7.5	6.3	5.0	4.0	3.2	2.5	2.0	1.6	1.1	0.7
4	13.0	13.0	13.0	13.0	13.0	13.0	13.0	13.0	13.0	11.9	10.3	8.8	7.4	6.2	5.0	4.0	3.2	2.5	2.0	1.6	1.0	0.7
5	13.0	13.0	13.0	13.0	13.0	13.0	13.0	13.0	13.0	11.8	10.2	8.7	7.3	6.2	4.9	3.9	3.1	2.5	2.0	1.6	1.0	0.7
6	13.0	13.0	13.0	13.0	13.0	13.0	13.0	13.0	13.0	11.6	10.1	8.6	7.3	6.1	4.9	3.9	3.1	2.5	2.0	1.6	1.0	0.7
7	13.0	13.0	13.0	13.0	13.0	13.0	13.0	13.0	13.0	11.5	9.9	8.5	7.2	6.0	4.8	3.8	3.1	2.5	2.0	1.6	1.0	0.7
8	13.0	13.0	13.0	13.0	13.0	13.0	13.0	13.0	13.0	11.4	9.8	8.4	7.1	6.0	4.8	3.8	3.0	2.4	2.0	1.6	1.0	0.7
9	13.0	13.0	13.0	13.0	13.0	13.0	13.0	13.0	12.9	11.3	9.8	8.3	7.1	5.9	4.7	3.8	3.0	2.4	1.9	1.6	1.0	0.7
10	13.0	13.0	13.0	13.0	13.0	13.0	13.0	13.0	12.8	11.2	9.7	8.3	7.0	5.9	4.7	3.7	3.0	2.4	1.9	1.6	1.0	0.7
11	13.0	13.0	13.0	13.0	13.0	13.0	13.0	13.0	12.7	11.1	9.6	8.2	6.9	5.8	4.7	3.7	3.0	2.4	1.9	1.5	1.0	0.7
12	13.0	13.0	13.0	13.0	13.0	13.0	13.0	13.0	12.6	11.0	9.5	8.1	6.9	5.8	4.6	3.7	3.0	2.4	1.9	1.5	1.0	0.7
13	13.0	13.0	13.0	13.0	13.0	13.0	13.0	13.0	12.5	10.9	9.4	8.1	6.8	5.8	4.6	3.7	2.9	2.4	1.9	1.5	1.0	0.7
14	13.0	13.0	13.0	13.0	13.0	13.0	13.0	13.0	12.4	10.8	9.4	8.0	6.8	5.7	4.6	3.7	2.9	2.4	1.9	1.5	1.0	0.7
15	13.0	13.0	13.0	13.0	13.0	13.0	13.0	13.0	12.3	10.8	9.3	8.0	6.8	5.7	4.6	3.6	2.9	2.4	1.9	1.5	1.0	0.7
16	13.0	13.0	13.0	13.0	13.0	13.0	13.0	13.0	12.2	10.7	9.3	7.9	6.7	5.7	4.5	3.6	2.9	2.4	1.9	1.5	1.0	0.7
17	13.0	13.0	13.0	13.0	13.0	13.0	13.0	13.0	12.2	10.7	9.2	7.9	6.7	5.6	4.5	3.6	2.9	2.4	1.9	1.5	1.0	0.7
18	13.0	13.0	13.0	13.0	13.0	13.0	13.0	13.0	12.1	10.6	9.2	7.9	6.7	5.6	4.5	3.6	2.9	2.4	1.9	1.6	1.0	0.7
19	13.0	13.0	13.0	13.0	13.0	13.0	13.0	13.0	12.1	10.6	9.2	7.9	6.7	5.6	4.5	3.6	2.9	2.4	1.9	1.6	1.1	0.7
20	13.0	13.0	13.0	13.0	13.0	13.0	13.0	13.0	12.0	10.5	9.2	7.8	6.7	5.6	4.5	3.6	2.9	2.4	1.9	1.6	1.1	0.8
21	13.0	13.0	13.0	13.0	13.0	13.0	13.0	13.0	12.0	10.5	9.1	7.8	6.6	5.6	4.5	3.6	2.9	2.4	1.9	1.6	1.1	0.8
22	13.0	13.0	13.0	13.0	13.0	13.0	13.0	13.0	12.0	10.5	9.1	7.8	6.6	5.6	4.5	3.6	2.9	2.4	1.9	1.6	1.1	0.8
23	13.0	13.0	13.0	13.0	13.0	13.0	13.0	13.0	11.9	10.5	9.1	7.8	6.6	5.6	4.5	3.6	2.9	2.4	2.0	1.6	1.1	0.8
24	13.0	13.0	13.0	13.0	13.0	13.0	13.0	13.0	11.9	10.5	9.1	7.8	6.6	5.6	4.5	3.6	3.0	2.4	2.0	1.6	1.1	0.8
25	13.0	13.0	13.0	13.0	13.0	13.0	13.0	13.0	11.9	10.5	9.1	7.8	6.6	5.6	4.5	3.7	3.0	2.4	2.0	1.6	1.1	0.8
26	13.0	13.0	13.0	13.0	13.0	13.0	13.0	12.5	11.1	9.8	8.5	7.3	6.2	5.3	4.2	3.4	2.8	2.3	1.9	1.5	1.1	0.8
27	13.0	13.0	13.0	13.0	13.0	13.0	13.0	11.7	10.4	9.1	7.9	6.8	5.8	4.9	4.0	3.2	2.6	2.1	1.8	1.5	1.0	0.8
28	13.0	13.0	13.0	13.0	13.0	13.0	12.1	10.9	9.7	8.5	7.4	6.4	5.4	4.6	3.7	3.0	2.5	2.0	1.7	1.4	1.0	0.7
29	13.0	13.0	13.0	13.0	13.0	12.4	11.3	10.2	9.1	8.0	6.9	6.0	5.1	4.3	3.5	2.8	2.3	1.9	1.6	1.3	0.9	0.7
30	13.0	13.0	13.0	13.0	12.6	11.6	10.6	9.5	8.5	7.5	6.5	5.6	4.8	4.1	3.3	2.7	2.2	1.8	1.5	1.2	0.9	0.7

Table 35-4.

Coldwater habitat and seasonal salmonid habitat

outside mixing zone maximum total ammonia-nitrogen criteria (mg/l).

pH	6.5	6.7	6.9	7.0	7.1	7.2	7.3	7.4	7.5	7.6	7.7	7.8	7.9	8.0	8.1	8.2	8.3	8.4	8.5	8.6	8.8	9.0
Temp. (oC) 0	13.0	13.0	13.0	13.0	13.0	13.0	13.0	13.0	13.0	12.6	10.9	9.3	7.8	6.6	5.2	4.2	3.3	2.6	2.1	1.7	1.1	0.7
1	13.0	13.0	13.0	13.0	13.0	13.0	13.0	13.0	13.0	12.4	10.7	9.1	7.7	6.5	5.2	4.1	3.3	2.6	2.1	1.7	1.1	0.7
2	13.0	13.0	13.0	13.0	13.0	13.0	13.0	13.0	13.0	12.2	10.6	9.0	7.6	6.4	5.1	4.1	3.2	2.6	2.1	1.6	1.1	0.7
3	13.0	13.0	13.0	13.0	13.0	13.0	13.0	13.0	13.0	12.1	10.4	8.9	7.5	6.3	5.0	4.0	3.2	2.5	2.0	1.6	1.1	0.7
4	13.0	13.0	13.0	13.0	13.0	13.0	13.0	13.0	13.0	11.9	10.3	8.8	7.4	6.2	5.0	4.0	3.2	2.5	2.0	1.6	1.0	0.7
5	13.0	13.0	13.0	13.0	13.0	13.0	13.0	13.0	13.0	11.8	10.2	8.7	7.3	6.2	4.9	3.9	3.1	2.5	2.0	1.6	1.0	0.7
6	13.0	13.0	13.0	13.0	13.0	13.0	13.0	13.0	13.0	11.6	10.1	8.6	7.3	6.1	4.9	3.9	3.1	2.5	2.0	1.6	1.0	0.7
7	13.0	13.0	13.0	13.0	13.0	13.0	13.0	13.0	13.0	11.5	9.9	8.5	7.2	6.0	4.8	3.8	3.1	2.5	2.0	1.6	1.0	0.7
8	13.0	13.0	13.0	13.0	13.0	13.0	13.0	13.0	13.0	11.4	9.8	8.4	7.1	6.0	4.8	3.8	3.0	2.4	2.0	1.6	1.0	0.7
9	13.0	13.0	13.0	13.0	13.0	13.0	13.0	13.0	12.9	11.3	9.8	8.3	7.1	5.9	4.7	3.8	3.0	2.4	1.9	1.6	1.0	0.7
10	13.0	13.0	13.0	13.0	13.0	13.0	13.0	13.0	12.8	11.2	9.7	8.3	7.0	5.9	4.7	3.7	3.0	2.4	1.9	1.6	1.0	0.7
11	13.0	13.0	13.0	13.0	13.0	13.0	13.0	13.0	12.7	11.1	9.6	8.2	6.9	5.8	4.7	3.7	3.0	2.4	1.9	1.5	1.0	0.7
12	13.0	13.0	13.0	13.0	13.0	13.0	13.0	13.0	12.6	11.0	9.5	8.1	6.9	5.8	4.6	3.7	3.0	2.4	1.9	1.5	1.0	0.7
13	13.0	13.0	13.0	13.0	13.0	13.0	13.0	13.0	12.5	10.9	9.4	8.1	6.8	5.8	4.6	3.7	2.9	2.4	1.9	1.5	1.0	0.7
14	13.0	13.0	13.0	13.0	13.0	13.0	13.0	13.0	12.4	10.8	9.4	8.0	6.8	5.7	4.6	3.7	2.9	2.4	1.9	1.5	1.0	0.7
15	13.0	13.0	13.0	13.0	13.0	13.0	13.0	13.0	12.3	10.8	9.3	8.0	6.8	5.7	4.6	3.6	2.9	2.4	1.9	1.5	1.0	0.7
16	13.0	13.0	13.0	13.0	13.0	13.0	13.0	13.0	12.2	10.7	9.3	7.9	6.7	5.7	4.5	3.6	2.9	2.4	1.9	1.5	1.0	0.7
17	13.0	13.0	13.0	13.0	13.0	13.0	13.0	13.0	12.2	10.7	9.2	7.9	6.7	5.6	4.5	3.6	2.9	2.4	1.9	1.5	1.0	0.7
18	13.0	13.0	13.0	13.0	13.0	13.0	13.0	13.0	12.1	10.6	9.2	7.9	6.7	5.6	4.5	3.6	2.9	2.4	1.9	1.6	1.0	0.7
19	13.0	13.0	13.0	13.0	13.0	13.0	13.0	13.0	12.1	10.6	9.2	7.9	6.7	5.6	4.5	3.6	2.9	2.4	1.9	1.6	1.1	0.7
20	13.0	13.0	13.0	13.0	13.0	13.0	13.0	13.0	12.0	10.5	9.1	7.8	6.7	5.6	4.5	3.6	2.9	2.4	1.9	1.6	1.1	0.8
21	13.0	13.0	13.0	13.0	13.0	13.0	13.0	12.6	11.2	9.8	8.5	7.3	6.2	5.2	4.2	3.4	2.7	2.2	1.8	1.5	1.0	0.7
22	13.0	13.0	13.0	13.0	13.0	13.0	13.0	11.7	10.4	9.1	7.9	6.8	5.8	4.9	3.9	3.2	2.6	2.1	1.7	1.4	1.0	0.7
23	13.0	13.0	13.0	13.0	13.0	13.0	12.2	10.9	9.7	8.5	7.4	6.3	5.4	4.6	3.7	3.0	2.4	1.9	1.6	1.3	0.9	0.6
24	13.0	13.0	13.0	13.0	13.0	12.4	11.3	10.2	9.1	7.9	6.9	5.9	5.0	4.3	3.4	2.8	2.2	1.8	1.5	1.2	0.9	0.6
25	13.0	13.0	13.0	13.0	12.6	11.6	10.6	9.5	8.4	7.4	6.4	5.5	4.7	4.0	3.2	2.6	2.1	1.7	1.4	1.2	0.8	0.6
26	13.0	13.0	13.0	12.6	11.7	10.8	9.9	8.9	7.9	6.9	6.0	5.2	4.4	3.7	3.0	2.4	2.0	1.6	1.3	1.1	0.8	0.6
27	13.0	13.0	12.4	11.7	10.9	10.1	9.2	8.3	7.4	6.5	5.6	4.8	4.1	3.5	2.8	2.3	1.9	1.5	1.2	1.0	0.7	0.5
28	13.0	12.7	11.6	10.9	10.2	9.4	8.6	7.7	6.9	6.0	5.2	4.5	3.9	3.3	2.6	2.1	1.7	1.4	1.2	1.0	0.7	0.5
29	12.6	11.9	10.8	10.2	9.5	8.8	8.0	7.2	6.4	5.6	4.9	4.2	3.6	3.1	2.5	2.0	1.6	1.3	1.1	0.9	0.7	0.5
30	11.8	11.1	10.1	9.5	8.9	8.2	7.5	6.8	6.0	5.3	4.6	4.0	3.4	2.9	2.3	1.9	1.5	1.3	1.1	0.9	0.6	0.5

Table 35-5.

Warmwater habitat

outside mixing zone 30-day average total ammonia-nitrogen criteria (mg/l).

pH	6.5	6.7	6.9	7.0	7.1	7.2	7.3	7.4	7.5	7.6	7.7	7.8	7.9	8.0	8.1	8.2	8.3	8.4	8.5	8.6	8.8	9.0
Temp. (oC)	The following criteria apply during the months of December to February:
0-10	13.0	13.0	13.0	12.6	11.7	10.7	9.7	8.6	7.6	6.6	5.6	4.8	4.0	3.3	2.8	2.3	1.9	1.5	1.2	1.0	0.7	0.5
11	13.0	13.0	12.4	11.6	10.8	9.9	8.9	8.0	7.0	6.1	5.2	4.4	3.7	3.1	2.6	2.1	1.7	1.4	1.2	0.9	0.6	0.4
12	13.0	12.6	11.5	10.8	10.0	9.2	8.3	7.4	6.5	5.6	4.8	4.1	3.4	2.9	2.4	2.0	1.6	1.3	1.1	0.9	0.6	0.4
13	12.3	11.6	10.6	10.0	9.2	8.5	7.7	6.8	6.0	5.2	4.5	3.8	3.2	2.7	2.2	1.8	1.5	1.2	1.0	0.8	0.6	0.4
14	11.4	10.8	9.8	9.3	8.6	7.9	7.1	6.3	5.6	4.8	4.2	3.5	3.0	2.5	2.1	1.7	1.4	1.1	0.9	0.8	0.5	0.4
15	10.6	10.0	9.1	8.6	8.0	7.3	6.6	5.9	5.2	4.5	3.9	3.3	2.8	2.3	1.9	1.6	1.3	1.1	0.9	0.7	0.5	0.3
16	9.8	9.3	8.5	8.0	7.4	6.8	6.1	5.5	4.8	4.2	3.6	3.0	2.6	2.1	1.8	1.5	1.2	1.0	0.8	0.7	0.5	0.3
17	9.1	8.6	7.8	7.4	6.8	6.3	5.7	5.1	4.5	3.9	3.3	2.8	2.4	2.0	1.7	1.4	1.1	0.9	0.8	0.6	0.4	0.3
18	8.5	8.0	7.3	6.9	6.4	5.8	5.3	4.7	4.2	3.6	3.1	2.6	2.2	1.8	1.5	1.3	1.1	0.9	0.7	0.6	0.4	0.3
19	7.9	7.4	6.8	6.4	5.9	5.4	4.9	4.4	3.9	3.3	2.9	2.4	2.1	1.7	1.4	1.2	1.0	0.8	0.7	0.5	0.4	0.3
20	7.3	6.9	6.3	5.9	5.5	5.0	4.6	4.1	3.6	3.1	2.7	2.3	1.9	1.6	1.3	1.1	0.9	0.8	0.6	0.5	0.4	0.3

The following criteria apply during the months of March to November:
10	2.3	2.3	2.3	2.3	2.3	2.3	2.3	2.3	2.3	2.3	2.3	2.0	1.7	1.4	1.1	0.9	0.7	0.6	0.5	0.4	0.2	0.2
11	2.3	2.3	2.3	2.3	2.3	2.3	2.3	2.3	2.3	2.3	2.3	2.0	1.7	1.4	1.1	0.9	0.7	0.6	0.5	0.4	0.2	0.2
12	2.3	2.3	2.3	2.3	2.3	2.3	2.3	2.3	2.3	2.3	2.3	2.0	1.7	1.4	1.1	0.9	0.7	0.6	0.5	0.4	0.2	0.2
13	2.3	2.3	2.3	2.3	2.3	2.3	2.3	2.3	2.3	2.3	2.3	1.9	1.6	1.4	1.1	0.9	0.7	0.6	0.5	0.4	0.2	0.2
14	2.3	2.3	2.3	2.3	2.3	2.3	2.3	2.3	2.3	2.3	2.3	1.9	1.6	1.4	1.1	0.9	0.7	0.6	0.5	0.4	0.2	0.2
15	2.2	2.2	2.2	2.2	2.2	2.2	2.2	2.2	2.2	2.2	2.2	1.9	1.6	1.4	1.1	0.9	0.7	0.6	0.5	0.4	0.2	0.2
16	2.2	2.2	2.2	2.2	2.2	2.2	2.2	2.2	2.2	2.2	2.2	1.9	1.6	1.4	1.1	0.9	0.7	0.6	0.5	0.4	0.2	0.2
17	2.2	2.2	2.2	2.2	2.2	2.2	2.2	2.2	2.2	2.2	2.2	1.9	1.6	1.4	1.1	0.9	0.7	0.6	0.5	0.4	0.3	0.2
18	2.2	2.2	2.2	2.2	2.2	2.2	2.2	2.2	2.2	2.2	2.2	1.9	1.6	1.4	1.1	0.9	0.7	0.6	0.5	0.4	0.3	0.2
19	2.2	2.2	2.2	2.2	2.2	2.2	2.2	2.2	2.2	2.2	2.2	1.9	1.6	1.4	1.1	0.9	0.7	0.6	0.5	0.4	0.3	0.2
20	2.2	2.2	2.2	2.2	2.2	2.2	2.2	2.2	2.2	2.2	2.2	1.9	1.6	1.4	1.1	0.9	0.7	0.6	0.5	0.4	0.3	0.2
21	2.1	2.1	2.1	2.1	2.1	2.1	2.1	2.1	2.1	2.1	2.1	1.8	1.5	1.3	1.0	0.8	0.7	0.5	0.4	0.4	0.2	0.2
22	1.9	1.9	1.9	1.9	1.9	1.9	1.9	1.9	1.9	1.9	1.9	1.6	1.4	1.2	0.9	0.8	0.6	0.5	0.4	0.3	0.2	0.2
23	1.8	1.8	1.8	1.8	1.8	1.8	1.8	1.8	1.8	1.8	1.8	1.5	1.3	1.1	0.9	0.7	0.6	0.5	0.4	0.3	0.2	0.2
24	1.7	1.7	1.7	1.7	1.7	1.7	1.7	1.7	1.7	1.7	1.7	1.4	1.2	1.0	0.8	0.7	0.5	0.4	0.4	0.3	0.2	0.1
25	1.6	1.6	1.6	1.6	1.6	1.6	1.6	1.6	1.6	1.6	1.6	1.3	1.1	1.0	0.8	0.6	0.5	0.4	0.3	0.3	0.2	0.1
26	1.4	1.4	1.4	1.4	1.4	1.4	1.4	1.4	1.4	1.4	1.4	1.2	1.1	0.9	0.7	0.6	0.5	0.4	0.3	0.3	0.2	0.1
27	1.4	1.4	1.4	1.4	1.4	1.4	1.4	1.4	1.4	1.4	1.4	1.2	1.0	0.8	0.7	0.5	0.4	0.4	0.3	0.2	0.2	0.1
28	1.3	1.3	1.3	1.3	1.3	1.3	1.3	1.3	1.3	1.3	1.3	1.1	0.9	0.8	0.6	0.5	0.4	0.3	0.3	0.2	0.2	0.1
29	1.2	1.2	1.2	1.2	1.2	1.2	1.2	1.2	1.2	1.2	1.2	1.0	0.9	0.7	0.6	0.5	0.4	0.3	0.3	0.2	0.2	0.1
30	1.1	1.1	1.1	1.1	1.1	1.1	1.1	1.1	1.1	1.1	1.1	1.0	0.8	0.7	0.6	0.5	0.4	0.3	0.3	0.2	0.2	0.1

Table 35-6.

Exceptional warmwater habitat

outside mixing zone 30-day average total ammonia-nitrogen criteria (mg/l).

pH	6.5	6.7	6.9	7.0	7.1	7.2	7.3	7.4	7.5	7.6	7.7	7.8	7.9	8.0	8.1	8.2	8.3	8.4	8.5	8.6	8.8	9.0
Temp. (oC)		The following criteria apply during the months of December to February:
0-10	13.0	13.0	13.0	12.6	11.7	10.7	9.7	8.6	7.6	6.6	5.6	4.8	4.0	3.3	2.8	2.3	1.9	1.5	1.2	1.0	0.7	0.5
11	13.0	13.0	12.4	11.6	10.8	9.9	8.9	8.0	7.0	6.1	5.2	4.4	3.7	3.1	2.6	2.1	1.7	1.4	1.2	0.9	0.6	0.4
12	13.0	12.6	11.5	10.8	10.0	9.2	8.3	7.4	6.5	5.6	4.8	4.1	3.4	2.9	2.4	2.0	1.6	1.3	1.1	0.9	0.6	0.4
13	12.3	11.6	10.6	10.0	9.2	8.5	7.7	6.8	6.0	5.2	4.5	3.8	3.2	2.7	2.2	1.8	1.5	1.2	1.0	0.8	0.6	0.4
14	11.4	10.8	9.8	9.3	8.6	7.9	7.1	6.3	5.6	4.8	4.2	3.5	3.0	2.5	2.1	1.7	1.4	1.1	0.9	0.8	0.5	0.4
15	10.6	10.0	9.1	8.6	8.0	7.3	6.6	5.9	5.2	4.5	3.9	3.3	2.8	2.3	1.9	1.6	1.3	1.1	0.9	0.7	0.5	0.3
16	9.8	9.3	8.5	8.0	7.4	6.8	6.1	5.5	4.8	4.2	3.6	3.0	2.6	2.1	1.8	1.5	1.2	1.0	0.8	0.7	0.5	0.3
17	9.1	8.6	7.8	7.4	6.8	6.3	5.7	5.1	4.5	3.9	3.3	2.8	2.4	2.0	1.7	1.4	1.1	0.9	0.8	0.6	0.4	0.3
18	8.5	8.0	7.3	6.9	6.4	5.8	5.3	4.7	4.2	3.6	3.1	2.6	2.2	1.8	1.5	1.3	1.1	0.9	0.7	0.6	0.4	0.3
19	7.9	7.4	6.8	6.4	5.9	5.4	4.9	4.4	3.9	3.3	2.9	2.4	2.1	1.7	1.4	1.2	1.0	0.8	0.7	0.5	0.4	0.3
20	7.3	6.9	6.3	5.9	5.5	5.0	4.6	4.1	3.6	3.1	2.7	2.3	1.9	1.6	1.3	1.1	0.9	0.8	0.6	0.5	0.4	0.3

The following criteria apply during the months of March to November:
10	2.2	2.2	2.2	2.2	2.2	2.2	2.2	2.2	2.2	2.2	2.2	1.9	1.6	1.3	1.1	0.9	0.7	0.5	0.4	0.4	0.2	0.2
11	2.2	2.2	2.2	2.2	2.2	2.2	2.2	2.2	2.2	2.2	2.2	1.9	1.6	1.3	1.1	0.8	0.7	0.5	0.4	0.4	0.2	0.2
12	2.2	2.2	2.2	2.2	2.2	2.2	2.2	2.2	2.2	2.2	2.2	1.9	1.6	1.3	1.1	0.8	0.7	0.5	0.4	0.4	0.2	0.2
13	2.2	2.2	2.2	2.2	2.2	2.2	2.2	2.2	2.2	2.2	2.2	1.8	1.6	1.3	1.0	0.8	0.7	0.5	0.4	0.4	0.2	0.2
14	2.1	2.1	2.1	2.1	2.1	2.1	2.1	2.1	2.1	2.1	2.1	1.8	1.6	1.3	1.0	0.8	0.7	0.5	0.4	0.4	0.2	0.2
15	2.1	2.1	2.1	2.1	2.1	2.1	2.1	2.1	2.1	2.1	2.1	1.8	1.5	1.3	1.0	0.8	0.7	0.5	0.4	0.4	0.2	0.2
16	2.1	2.1	2.1	2.1	2.1	2.1	2.1	2.1	2.1	2.1	2.1	1.8	1.5	1.3	1.0	0.8	0.7	0.5	0.4	0.4	0.2	0.2
17	2.1	2.1	2.1	2.1	2.1	2.1	2.1	2.1	2.1	2.1	2.1	1.8	1.5	1.3	1.0	0.8	0.7	0.5	0.4	0.4	0.2	0.2
18	2.1	2.1	2.1	2.1	2.1	2.1	2.1	2.1	2.1	2.1	2.1	1.8	1.5	1.3	1.0	0.8	0.7	0.5	0.4	0.4	0.2	0.2
19	2.1	2.1	2.1	2.1	2.1	2.1	2.1	2.1	2.1	2.1	2.1	1.8	1.5	1.3	1.0	0.8	0.7	0.5	0.4	0.4	0.2	0.2
20	2.1	2.1	2.1	2.1	2.1	2.1	2.1	2.1	2.1	2.1	2.1	1.8	1.5	1.3	1.0	0.8	0.7	0.5	0.4	0.4	0.2	0.2
21	1.9	1.9	1.9	1.9	1.9	1.9	1.9	1.9	1.9	1.9	1.9	1.7	1.4	1.2	1.0	0.8	0.6	0.5	0.4	0.3	0.2	0.2
22	1.8	1.8	1.8	1.8	1.8	1.8	1.8	1.8	1.8	1.8	1.8	1.6	1.3	1.1	0.9	0.7	0.6	0.5	0.4	0.3	0.2	0.2
23	1.7	1.7	1.7	1.7	1.7	1.7	1.7	1.7	1.7	1.7	1.7	1.4	1.2	1.0	0.8	0.7	0.5	0.4	0.4	0.3	0.2	0.1
24	1.6	1.6	1.6	1.6	1.6	1.6	1.6	1.6	1.6	1.6	1.6	1.3	1.1	1.0	0.8	0.6	0.5	0.4	0.3	0.3	0.2	0.1
25	1.5	1.5	1.5	1.5	1.5	1.5	1.5	1.5	1.5	1.5	1.5	1.3	1.1	0.9	0.7	0.6	0.5	0.4	0.3	0.3	0.2	0.1
26	1.4	1.4	1.4	1.4	1.4	1.4	1.4	1.4	1.4	1.4	1.4	1.2	1.0	0.8	0.7	0.6	0.4	0.4	0.3	0.2	0.2	0.1
27	1.3	1.3	1.3	1.3	1.3	1.3	1.3	1.3	1.3	1.3	1.3	1.1	0.9	0.8	0.6	0.5	0.4	0.3	0.3	0.2	0.2	0.1
28	1.2	1.2	1.2	1.2	1.2	1.2	1.2	1.2	1.2	1.2	1.2	1.0	0.9	0.7	0.6	0.5	0.4	0.3	0.3	0.2	0.2	0.1
29	1.1	1.1	1.1	1.1	1.1	1.1	1.1	1.1	1.1	1.1	1.1	1.0	0.8	0.7	0.6	0.5	0.4	0.3	0.3	0.2	0.2	0.1
30	1.0	1.0	1.0	1.0	1.0	1.0	1.0	1.0	1.0	1.0	1.0	0.9	0.8	0.7	0.5	0.4	0.4	0.3	0.2	0.2	0.1	0.1

Table 35-7.

Modified warmwater habitat

outside mixing zone 30-day average total ammonia-nitrogen criteria (mg/l).

pH	6.5	6.7	6.9	7.0	7.1	7.2	7.3	7.4	7.5	7.6	7.7	7.8	7.9	8.0	8.1	8.2	8.3	8.4	8.5	8.6	8.8	9.0
Temp. (oC)		The following criteria apply during the months of December to February:
0-10	13.0	13.0	13.0	12.6	11.7	10.7	9.7	8.6	7.6	6.6	5.6	4.8	4.0	3.3	2.8	2.3	1.9	1.5	1.2	1.0	0.7	0.5
11	13.0	13.0	12.4	11.6	10.8	9.9	8.9	8.0	7.0	6.1	5.2	4.4	3.7	3.1	2.6	2.1	1.7	1.4	1.2	0.9	0.6	0.4
12	13.0	12.6	11.5	10.8	10.0	9.2	8.3	7.4	6.5	5.6	4.8	4.1	3.4	2.9	2.4	2.0	1.6	1.3	1.1	0.9	0.6	0.4
13	12.3	11.6	10.6	10.0	9.2	8.5	7.7	6.8	6.0	5.2	4.5	3.8	3.2	2.7	2.2	1.8	1.5	1.2	1.0	0.8	0.6	0.4
14	11.4	10.8	9.8	9.3	8.6	7.9	7.1	6.3	5.6	4.8	4.2	3.5	3.0	2.5	2.1	1.7	1.4	1.1	0.9	0.8	0.5	0.4
15	10.6	10.0	9.1	8.6	8.0	7.3	6.6	5.9	5.2	4.5	3.9	3.3	2.8	2.3	1.9	1.6	1.3	1.1	0.9	0.7	0.5	0.3
16	9.8	9.3	8.5	8.0	7.4	6.8	6.1	5.5	4.8	4.2	3.6	3.0	2.6	2.1	1.8	1.5	1.2	1.0	0.8	0.7	0.5	0.3
17	9.1	8.6	7.8	7.4	6.8	6.3	5.7	5.1	4.5	3.9	3.3	2.8	2.4	2.0	1.7	1.4	1.1	0.9	0.8	0.6	0.4	0.3
18	8.5	8.0	7.3	6.9	6.4	5.8	5.3	4.7	4.2	3.6	3.1	2.6	2.2	1.8	1.5	1.3	1.1	0.9	0.7	0.6	0.4	0.3
19	7.9	7.4	6.8	6.4	5.9	5.4	4.9	4.4	3.9	3.3	2.9	2.4	2.1	1.7	1.4	1.2	1.0	0.8	0.7	0.5	0.4	0.3
20	7.3	6.9	6.3	5.9	5.5	5.0	4.6	4.1	3.6	3.1	2.7	2.3	1.9	1.6	1.3	1.1	0.9	0.8	0.6	0.5	0.4	0.3

The following criteria apply during the months of March to November:
10	3.4	3.4	3.4	3.4	3.4	3.4	3.4	3.4	3.4	3.4	3.4	2.9	2.5	2.1	1.7	1.3	1.1	0.9	0.7	0.6	0.4	0.2
11	3.4	3.4	3.4	3.4	3.4	3.4	3.4	3.4	3.4	3.4	3.4	2.9	2.5	2.1	1.7	1.3	1.1	0.8	0.7	0.6	0.4	0.2
12	3.4	3.4	3.4	3.4	3.4	3.4	3.4	3.4	3.4	3.4	3.4	2.9	2.4	2.1	1.6	1.3	1.1	0.8	0.7	0.5	0.4	0.2
13	3.4	3.4	3.4	3.4	3.4	3.4	3.4	3.4	3.4	3.4	3.4	2.9	2.4	2.0	1.6	1.3	1.0	0.8	0.7	0.5	0.4	0.2
14	3.3	3.3	3.3	3.3	3.3	3.3	3.3	3.3	3.3	3.3	3.3	2.9	2.4	2.0	1.6	1.3	1.0	0.8	0.7	0.5	0.4	0.2
15	3.3	3.3	3.3	3.3	3.3	3.3	3.3	3.3	3.3	3.3	3.3	2.8	2.4	2.0	1.6	1.3	1.0	0.8	0.7	0.5	0.4	0.3
16	3.3	3.3	3.3	3.3	3.3	3.3	3.3	3.3	3.3	3.3	3.3	2.8	2.4	2.0	1.6	1.3	1.0	0.8	0.7	0.5	0.4	0.3
17	3.3	3.3	3.3	3.3	3.3	3.3	3.3	3.3	3.3	3.3	3.3	2.8	2.4	2.0	1.6	1.3	1.0	0.8	0.7	0.5	0.4	0.3
18	3.3	3.3	3.3	3.3	3.3	3.3	3.3	3.3	3.3	3.3	3.3	2.8	2.4	2.0	1.6	1.3	1.0	0.8	0.7	0.6	0.4	0.3
19	3.3	3.3	3.3	3.3	3.3	3.3	3.3	3.3	3.3	3.3	3.3	2.8	2.4	2.0	1.6	1.3	1.0	0.8	0.7	0.6	0.4	0.3
20	3.2	3.2	3.2	3.2	3.2	3.2	3.2	3.2	3.2	3.2	3.2	2.8	2.4	2.0	1.6	1.3	1.0	0.8	0.7	0.6	0.4	0.3
21	3.0	3.0	3.0	3.0	3.0	3.0	3.0	3.0	3.0	3.0	3.0	2.6	2.2	1.9	1.5	1.2	1.0	0.8	0.6	0.5	0.4	0.3
22	2.8	2.8	2.8	2.8	2.8	2.8	2.8	2.8	2.8	2.8	2.8	2.4	2.1	1.7	1.4	1.1	0.9	0.7	0.6	0.5	0.3	0.2
23	2.6	2.6	2.6	2.6	2.6	2.6	2.6	2.6	2.6	2.6	2.6	2.3	1.9	1.6	1.3	1.0	0.8	0.7	0.6	0.5	0.3	0.2
24	2.4	2.4	2.4	2.4	2.4	2.4	2.4	2.4	2.4	2.4	2.4	2.1	1.8	1.5	1.2	1.0	0.8	0.6	0.5	0.4	0.3	0.2
25	2.3	2.3	2.3	2.3	2.3	2.3	2.3	2.3	2.3	2.3	2.3	2.0	1.7	1.4	1.1	0.9	0.7	0.6	0.5	0.4	0.3	0.2
26	2.1	2.1	2.1	2.1	2.1	2.1	2.1	2.1	2.1	2.1	2.1	1.8	1.6	1.3	1.1	0.9	0.7	0.6	0.5	0.4	0.3	0.2
27	2.0	2.0	2.0	2.0	2.0	2.0	2.0	2.0	2.0	2.0	2.0	1.7	1.5	1.2	1.0	0.8	0.7	0.5	0.4	0.4	0.3	0.2
28	1.9	1.9	1.9	1.9	1.9	1.9	1.9	1.9	1.9	1.9	1.9	1.6	1.4	1.2	0.9	0.8	0.6	0.5	0.4	0.3	0.2	0.2
29	1.7	1.7	1.7	1.7	1.7	1.7	1.7	1.7	1.7	1.7	1.7	1.5	1.3	1.1	0.9	0.7	0.6	0.5	0.4	0.3	0.2	0.2
30	1.6	1.6	1.6	1.6	1.6	1.6	1.6	1.6	1.6	1.6	1.6	1.4	1.2	1.0	0.8	0.7	0.5	0.5	0.4	0.3	0.2	0.2

Table 35-8.

Coldwater habitat

outside mixing zone 30-day average total ammonia-nitrogen criteria (mg/l).

pH	6.5	6.7	6.9	7.0	7.1	7.2	7.3	7.4	7.5	7.6	7.7	7.8	7.9	8.0	8.1	8.2	8.3	8.4	8.5	8.6	8.8	9.0
Temp. (oC) 0	2.5	2.5	2.5	2.5	2.5	2.5	2.5	2.5	2.5	2.5	2.5	2.1	1.8	1.5	1.2	0.9	0.8	0.6	0.5	0.4	0.2	0.2
1	2.4	2.4	2.4	2.4	2.4	2.4	2.4	2.4	2.4	2.4	2.4	2.1	1.8	1.5	1.2	0.9	0.7	0.6	0.5	0.4	0.2	0.2
2	2.4	2.4	2.4	2.4	2.4	2.4	2.4	2.4	2.4	2.4	2.4	2.1	1.7	1.5	1.2	0.9	0.7	0.6	0.5	0.4	0.2	0.2
3	2.4	2.4	2.4	2.4	2.4	2.4	2.4	2.4	2.4	2.4	2.4	2.0	1.7	1.4	1.1	0.9	0.7	0.6	0.5	0.4	0.2	0.2
4	2.3	2.3	2.3	2.3	2.3	2.3	2.3	2.3	2.3	2.3	2.3	2.0	1.7	1.4	1.1	0.9	0.7	0.6	0.5	0.4	0.2	0.2
5	2.3	2.3	2.3	2.3	2.3	2.3	2.3	2.3	2.3	2.3	2.3	2.0	1.7	1.4	1.1	0.9	0.7	0.6	0.5	0.4	0.2	0.2
6	2.3	2.3	2.3	2.3	2.3	2.3	2.3	2.3	2.3	2.3	2.3	2.0	1.7	1.4	1.1	0.9	0.7	0.6	0.5	0.4	0.2	0.2
7	2.3	2.3	2.3	2.3	2.3	2.3	2.3	2.3	2.3	2.3	2.3	1.9	1.6	1.4	1.1	0.9	0.7	0.6	0.4	0.4	0.2	0.2
8	2.2	2.2	2.2	2.2	2.2	2.2	2.2	2.2	2.2	2.2	2.2	1.9	1.6	1.4	1.1	0.9	0.7	0.6	0.4	0.4	0.2	0.2
9	2.2	2.2	2.2	2.2	2.2	2.2	2.2	2.2	2.2	2.2	2.2	1.9	1.6	1.3	1.1	0.9	0.7	0.6	0.4	0.4	0.2	0.2
10	2.2	2.2	2.2	2.2	2.2	2.2	2.2	2.2	2.2	2.2	2.2	1.9	1.6	1.3	1.1	0.9	0.7	0.5	0.4	0.4	0.2	0.2
11	2.2	2.2	2.2	2.2	2.2	2.2	2.2	2.2	2.2	2.2	2.2	1.9	1.6	1.3	1.1	0.8	0.7	0.5	0.4	0.4	0.2	0.2
12	2.2	2.2	2.2	2.2	2.2	2.2	2.2	2.2	2.2	2.2	2.2	1.9	1.6	1.3	1.1	0.8	0.7	0.5	0.4	0.4	0.2	0.2
13	2.2	2.2	2.2	2.2	2.2	2.2	2.2	2.2	2.2	2.2	2.2	1.8	1.6	1.3	1.0	0.8	0.7	0.5	0.4	0.4	0.2	0.2
14	2.1	2.1	2.1	2.1	2.1	2.1	2.1	2.1	2.1	2.1	2.1	1.8	1.6	1.3	1.0	0.8	0.7	0.5	0.4	0.4	0.2	0.2
15	2.1	2.1	2.1	2.1	2.1	2.1	2.1	2.1	2.1	2.1	2.1	1.8	1.5	1.3	1.0	0.8	0.7	0.5	0.4	0.4	0.2	0.2
16	2.0	2.0	2.0	2.0	2.0	2.0	2.0	2.0	2.0	2.0	2.0	1.7	1.4	1.2	1.0	0.8	0.6	0.5	0.4	0.3	0.2	0.2
17	1.8	1.8	1.8	1.8	1.8	1.8	1.8	1.8	1.8	1.8	1.8	1.6	1.3	1.1	0.9	0.7	0.6	0.5	0.4	0.3	0.2	0.1
18	1.7	1.7	1.7	1.7	1.7	1.7	1.7	1.7	1.7	1.7	1.7	1.5	1.2	1.0	0.8	0.7	0.5	0.4	0.4	0.3	0.2	0.1
19	1.6	1.6	1.6	1.6	1.6	1.6	1.6	1.6	1.6	1.6	1.6	1.4	1.2	1.0	0.8	0.6	0.5	0.4	0.3	0.3	0.2	0.1
20	1.5	1.5	1.5	1.5	1.5	1.5	1.5	1.5	1.5	1.5	1.5	1.3	1.1	0.9	0.7	0.6	0.5	0.4	0.3	0.3	0.2	0.1
21	1.4	1.4	1.4	1.4	1.4	1.4	1.4	1.4	1.4	1.4	1.4	1.2	1.0	0.8	0.7	0.5	0.4	0.4	0.3	0.2	0.2	0.1
22	1.3	1.3	1.3	1.3	1.3	1.3	1.3	1.3	1.3	1.3	1.3	1.1	0.9	0.8	0.6	0.5	0.4	0.3	0.3	0.2	0.2	0.1
23	1.2	1.2	1.2	1.2	1.2	1.2	1.2	1.2	1.2	1.2	1.2	1.0	0.9	0.7	0.6	0.5	0.4	0.3	0.3	0.2	0.1	0.1
24	1.1	1.1	1.1	1.1	1.1	1.1	1.1	1.1	1.1	1.1	1.1	1.0	0.8	0.7	0.6	0.4	0.4	0.3	0.2	0.2	0.1	0.1
25	1.0	1.0	1.0	1.0	1.0	1.0	1.0	1.0	1.0	1.0	1.0	0.9	0.8	0.6	0.5	0.4	0.3	0.3	0.2	0.2	0.1	0.1
26	1.0	1.0	1.0	1.0	1.0	1.0	1.0	1.0	1.0	1.0	1.0	0.8	0.7	0.6	0.5	0.4	0.3	0.3	0.2	0.2	0.1	0.1
27	0.9	0.9	0.9	0.9	0.9	0.9	0.9	0.9	0.9	0.9	0.9	0.8	0.7	0.6	0.5	0.4	0.3	0.2	0.2	0.2	0.1	0.1
28	0.8	0.8	0.8	0.8	0.8	0.8	0.8	0.8	0.8	0.8	0.8	0.7	0.6	0.5	0.4	0.3	0.3	0.2	0.2	0.2	0.1	0.1
29	0.8	0.8	0.8	0.8	0.8	0.8	0.8	0.8	0.8	0.8	0.8	0.7	0.6	0.5	0.4	0.3	0.3	0.2	0.2	0.1	0.1	0.1
30	0.7	0.7	0.7	0.7	0.7	0.7	0.7	0.7	0.7	0.7	0.7	0.6	0.5	0.5	0.4	0.3	0.2	0.2	0.2	0.1	0.1	0.1

Table 35-9.

Statewide water quality criteria for the protection of aquatic life for water hardness Page 1 of 2 dependent criteria.

Chemical	Form1	Units2	Equation	Chemical 6
				100	200	300	400
Cadmium IMZM3	D4	µg/l	e ( 1.128 [ln H] - 3.051)	8.5	19	29	41
OMZM3	D4	µg/l	e( 1.128 [ln H] - 3.744)	4.3	9.3	15	20
OMZA3	D4	µg/l	e( 0.7852 [ln H] - 2.810)	2.2	3.9	5.3	6.6
Cadmium IMZM3	TR5	µg/l	e( 1.128 [ln H] - 2.9936)	9.0	20	31	43
OMZM3	TR5	µg/l	e( 1.128 [ln H] - 3.6867)	4.5	9.9	16	22
OMZA3	TR5	µg/l	e( 0.7852 [ln H] - 2.715)	2.5	4.2	5.8	7.3
Chromium IMZM3	D4	µg/l	e( 0.819 [ln H] + 3.2667)	1100	2000	2800	3500
OMZM3	D4	µg/l	e( 0.819 [ln H] + 2.5736)	570	1000	1400	1800
OMZA3	D4	µg/l	e( 0.819 [ln H] + 0.5340)	74	130	180	230
Chromium IMZM3	TR5	µg/l	e( 0.819 [ln H] + 4.4187)	3600	6400	8900	11000
OMZM3	TR5	µg/l	e( 0.819 [ln H] + 3.7256)	1800	3200	4400	5600
OMZA3	TR5	µg/l	e( 0.819 [ln H] + 0.6848)	86	150	210	270
Copper IMZM3	D4	µg/l	e( 0.9422 [ln H] - 1.048)	27	52	76	99
OMZM3	D4	µg/l	e( 0.9422 [ln H] - 1.741)	13	26	38	50
OMZA3	D4	µg/l	e( 0.8545 [ln H] - 1.743)	9.0	16	23	29
Copper IMZM3	TR5	µg/l	e( 0.9422 [ln H] - 1.007)	28	54	79	100
OMZM3	TR5	µg/l	e( 0.9422 [ln H] - 1.700)	14	27	39	52
OMZA3	TR5	µg/l	e( 0.8545 [ln H] - 1.702)	9.3	17	24	30
Lead IMZM3	D4	µg/l	e( 1.273 [ln H] - 0.5964)	190	470	780	1100
OMZM3	D4	µg/l	e( 1.273 [ln H] - 1.289)	97	230	390	570
OMZA3	D4	µg/l	e( 1.273 [ln H] - 4.237)	5.1	12	21	30
Lead IMZM3	TR5	µg/l	e( 1.273 [ln H] - 0.3619)	240	590	990	1400
OMZM3	TR5	µg/l	e( 1.273 [ln H] - 1.055)	120	300	500	710
OMZA3	TR5	µg/l	e( 1.273 [ln H] - 4.003)	6.4	16	26	37
Nickel IMZM3	D4	µg/l	e( 0.846 [ln H] + 2.946)	940	1700	2400	3000
OMZM3	D4	µg/l	e( 0.846 [ln H] + 2.253)	470	840	1200	1500
OMZA3	D4	µg/l	e( 0.846 [ln H] + 0.0554)	52	93	130	170
Nickel IMZM3	TR5	µg/l	e( 0.846 [ln H] + 2.948)	940	1700	2400	3000
OMZM3	TR5	µg/l	e( 0.846 [ln H] + 2.255)	470	840	1200	1500
OMZA3	TR5	µg/l	e( 0.846 [ln H] + 0.0584)	52	94	130	170
Zinc IMZM3	D4	µg/l	e( 0.8473 [ln H] + 1.555)	230	420	590	760
OMZM3	D4	µg/l	e( 0.8473 [ln H] + 0.862)	120	210	300	380
OMZA3	D4	µg/l	e( 0.8473 [ln H] + 0.870)	120	210	300	380
Zinc IMZM3	TR5	µg/l	e( 0.8473 [ln H] + 1.577)	240	430	610	780
OMZM3	TR5	µg/l	e( 0.8473 [ln H] + 0.884)	120	220	300	390
OMZA3	TR5	µg/l	e( 0.8473 [ln H] + 0.884)	120	220	300	390

¹D = dissolved; TR = total recoverable.

²µg/l = micrograms per liter (parts per billion).

³IMZM = inside mixing zone maximum; OMZM = outside mixing zone maximum; OMZA = outside mixing zone average.

⁴These criteria are implemented by multiplying them by a translator approved by the director pursuant to rule 3745-2-04 of the Administrative Code.

⁵These criteria apply in the absence of a translator approved by the director pursuant to rule 3745-2-04 of the Administrative Code.

⁶Numeric criteria are presented at example water hardnesses. The equations can be used to calculate numeric criteria at any water hardness up to 400 mg/l CaCO₃. "e" = the base e exponential function. "ln H" = the natural logarithm of the water hardness. The criteria at a water hardness of 400 mg/l CaCO₃are used for water hardnesses above 400 mg/l CaCO₃.

Chemical	Form1	Units2	Equation	Criteria6
				6.5	7.5	8.0	9.0
Pentachlorophenol IMZM3	T	µg/l	e( 1.005 [pH] - 4.176)	11	29	48	130
OMZM3	T	µg/l	e( 1.005 [pH] - 4.869)	5.3	14	24	65
OMZA3	T	µg/l	e( 1.005 [pH] - 5.134)	4.0	11	18	50

¹T = total.

²µg/l = micrograms per liter (parts per billion).

³IMZM = inside mixing zone maximum; OMZM = outside mixing zone maximum; OMZA = outside mixing zone average.

⁴Numeric criteria are presented at example water pH. The equations can be used to calculate numeric criteria at any water pH between 6.5 and 9.0. "e" = the base e exponential function.

Table 35-11. Temperature criteria.

(A) General Ohio river basin - includes all waters of the state within the boundaries of the Ohio river basin, excluding the Ohio river and those water bodies or water body segments as designated in paragraphs (B) to (F) of this table. Shown as degrees Fahrenheit and (Celsius).

	Jan.	Feb.	Mar.	Mar.	Apr.	Apr.	May	May	June
	1-31	1-29	1-15	16-31	1-15	16-30	1-15	16-31	1-15
Average:	47	47	51	54	59	65	67	70	74
( 8.3)	( 8.3)	( 10.0)	( 12.2)	( 15.0)	( 18.3)	( 19.4)	( 21.1)	( 23.3)
Daily Maximum:	52	52	56	59	65	70	73	76	80
( 11.1)	( 11.1)	( 13.3)	( 15.0)	( 18.3)	( 21.1)	( 22.8)	( 24.4)	( 26.7)
June	July	Aug.	Sept.	Sept.	Oct.	Oct.	Nov.	Dec.
16-30	1-31	1-31	1-15	16-30	1-15	16-31	1-30	1-31
Average:	82	82	82	82	73	71	65	60	47
( 27.8)	( 27.8)	( 27.8)	( 27.8)	( 22.8)	( 21.7)	( 18.3)	( 15.6)	( 8.3)
Daily Maximum:	85	85	85	85	78	76	70	65	52
( 29.4)	( 29.4)	( 29.4)	( 29.4)	( 25.6)	( 24.4)	( 21.1)	( 18.3)	( 11.1)

(B) Lower great Miami river - Steele dam in Dayton (river mile 81.3) to the confluence with the Ohio river. Shown as degrees Fahrenheit and (Celsius).

Jan.	Feb.	Mar.	Mar.	Apr.	Apr.	May	May	June
1-31	1-29	1-15	16-31	1-15	16-30	1-15	16-31	1-15
Average:	49	49	53	56	59	65	67	70	75
( 9.4)	( 9.4)	( 11.9)	( 13.3)	( 15.0)	( 18.3)	( 19.4)	( 21.1)	( 23.9)
Daily Maximum:	54	54	58	61	68	74	77	79	83
( 12.2)	( 12.2)	( 14.4)	( 16.1)	( 20.0)	( 23.3)	( 25.0)	( 26.1)	( 28.3)
June	July	Aug.	Sept.	Sept.	Oct.	Oct.	Nov.	Dec.
16-30	1-31	1-31	1-15	16-30	1-15	16-31	1-30	1-31
Average:	85	85	85	85	78	71	66	63	49
( 29.4)	( 29.4)	( 29.4)	( 29.4)	( 25.6)	( 21.7)	( 18.9)	( 17.2)	( 9.4)
Daily Maximum:	89	89	89	89	83	76	71	68	54
( 31.7)	( 31.7)	( 31.7)	( 31.7)	( 28.3)	( 24.4)	( 21.7)	( 20.0)	( 12.2)

(C) Scioto river - Griggs dam in Columbus (river mile 136) to the confluence with the Ohio river. Shown as degrees Fahrenheit and (Celsius).

Jan.	Feb.	Mar.	Mar.	Apr.	Apr.	May	May	June
1-31	1-29	1-15	16-31	1-15	16-30	1-15	16-31	1-15
Average:	47	47	51	54	59	62	67	72	75
( 8.3)	( 8.3)	( 10.6)	( 12.2)	( 15.0)	( 16.7)	( 19.4)	( 22.2)	( 23.9)
Daily Maximum:	52	52	56	59	65	70	75	79	82
( 11.1)	( 11.1)	( 13.3)	( 15.0)	( 18.3)	( 21.1)	( 23.9)	( 26.1)	( 27.8)
June	July	Aug.	Sept.	Sept.	Oct.	Oct.	Nov.	Dec.
16-30	1-31	1-31	1-15	16-30	1-15	16-31	1-30	1-31
Average:	83	83	83	83	75	71	65	58	47
( 28.3)	( 28.3)	( 28.3)	( 28.3)	( 23.9)	( 21.7)	( 18.3)	( 14.4)	( 8.3)
Daily Maximum:	87	87	87	87	80	76	70	63	52
( 30.6)	( 30.6)	( 30.6)	( 30.6)	( 26.7)	( 24.4)	( 21.1)	( 17.2)	( 11.1)

(D) Hocking river - entire mainstem. Shown as degrees Fahrenheit and (Celsius).

Jan.	Feb.	Mar.	Mar.	Apr.	Apr.	May	May	June
1-31	1-29	1-15	16-31	1-15	16-30	1-15	16-31	1-15
Average:	45	45	51	56	59	65	67	70	74
( 7.2)	( 7.2)	( 10.6)	( 13.3)	( 15.0)	( 18.3)	( 19.4)	( 21.1)	( 23.3)
Daily Maximum:	50	50	56	61	66	70	73	76	80
( 10.0)	( 10.0)	( 13.3)	( 16.1)	( 18.9)	( 21.1)	( 22.8)	( 24.4)	( 26.7)
June	July	Aug.	Sept.	Sept.	Oct.	Oct.	Nov.	Dec.
16-30	1-31	1-31	1-15	16-30	1-15	16-31	1-30	1-31
Average:	83	83	83	83	77	65	62	58	45
( 28.3)	( 28.3)	( 28.3)	( 28.3)	( 25.0)	( 18.3)	( 16.7)	( 14.4)	( 7.2)
Daily Maximum:	87	87	87	87	82	70	67	63	50
( 30.6)	( 30.6)	( 30.6)	( 30.6)	( 27.8)	( 21.1)	( 19.4)	( 17.2)	( 10.0)

(E) Muskingum river - entire mainstem. Shown as degrees Fahrenheit and (Celsius).

Jan.	Feb.	Mar.	Mar.	Apr.	Apr.	May	May	June
1-31	1-29	1-15	16-31	1-15	16-30	1-15	16-31	1-15
Average:	45	45	53	53	58	65	68	72	76
( 7.2)	( 7.2)	( 11.7)	( 11.7)	( 14.4)	( 18.3)	( 20.0)	( 22.2)	( 24.4)
Daily Maximum:	50	50	58	58	63	70	74	77	84
( 10.0)	( 10.0)	( 14.4)	( 14.4)	( 17.2)	( 21.1)	( 23.3)	( 25.0)	( 28.9)
June	July	Aug.	Sept.	Sept.	Oct.	Oct.	Nov.	Dec.
16-30	1-31	1-31	1-15	16-30	1-15	16-31	1-30	1-31
Average:	85	85	85	85	80	73	67	62	47
( 29.4)	( 29.4)	( 29.4)	( 29.4)	( 26.7)	( 22.8)	( 19.4)	( 16.7)	( 8.3)
Daily Maximum:	89	89	89	89	85	77	72	67	52
( 31.7)	( 31.7)	( 31.7)	( 31.7)	( 29.4)	( 25.0)	( 22.2)	( 19.4)	( 11.1)

(F) Mahoning river - Leavitt road dam (river mile 46.1) to the Ohio- Pennsylvania state line (river mile 12.6). Shown as degrees Fahrenheit and (Celsius).

Jan.	Feb.	Mar.	Mar.	Apr.	Apr.	May	May	June
1-31	1-29	1-15	16-31	1-15	16-30	1-15	16-31	1-15
Average:	47	47	50	54	59	65	68	73	77
( 8.3)	( 8.3)	( 10.0)	( 12.2)	( 15.0)	( 18.3)	( 20.0)	( 22.8)	( 25.0)
Daily Maximum:	53	53	57	61	65	70	76	79	84
( 11.7)	( 11.7)	( 13.9)	( 16.1)	( 18.3)	( 21.1)	( 24.4)	( 26.1)	( 28.9)
June	July	Aug.	Sept.	Sept.	Oct.	Oct.	Nov.	Dec.
16-30	1-31	1-31	1-15	16-30	1-15	16-31	1-30	1-31
Average:	85	85	85	85	78	73	67	60	51
( 29.4)	( 29.4)	( 29.4)	( 29.4)	( 25.6)	( 22.8)	( 19.4)	( 15.6)	( 10.6)
Daily Maximum:	89	89	89	89	83	77	72	66	55
( 31.7)	( 31.7)	( 31.7)	( 31.7)	( 28.3)	( 25.0)	( 22.2)	( 18.9)	( 12.8)

(G) General lake Erie basin - includes all surface waters of the state within the boundaries of the lake Erie drainage basin, excluding lake Erie and those water bodies as designated in paragraphs (H) to (L) of this table. Shown as degrees Fahrenheit and (Celsius).

Jan.	Feb.	Mar.	Mar.	Apr.	Apr.	May	May	June
1-31	1-29	1-15	16-31	1-15	16-30	1-15	16-31	1-15
Average:	44	44	48	51	54	60	64	66	72
( 6.7)	( 6.7)	( 8.9)	( 10.6)	( 12.2)	( 15.6)	( 17.8)	( 18.9)	( 22.2)
Daily Maximum:	49	49	53	56	61	65	69	72	76
( 9.4)	( 9.4)	( 11.7)	( 13.3)	( 16.1)	( 18.3)	( 20.6)	( 22.2)	( 24.4)
June	July	Aug.	Sept.	Sept.	Oct.	Oct.	Nov.	Dec.
16-30	1-31	1-31	1-15	16-30	1-15	16-31	1-30	1-31
Average:	82	82	82	82	75	67	61	54	44
( 27.8)	( 27.8)	( 27.8)	( 27.8)	( 23.9)	( 19.4)	( 16.1)	( 12.2)	( 6.7)
Daily Maximum:	85	85	85	85	80	72	66	59	49
( 29.4)	( 29.4)	( 29.4)	( 29.4)	( 26.7)	( 22.2)	( 18.9)	( 15.0)	( 9.4)

(H) Lake Erie tributary estuaries - includes all lake Erie tributary estuaries within the lake breakwaters and extending upstream to the lake Erie mean high water level. Shown as degrees Fahrenheit and (Celsius).

Jan.	Feb.	Mar.	Mar.	Apr.	Apr.	May	May	June
1-31	1-29	1-15	16-31	1-15	16-30	1-15	16-31	1-15
Average:	-	-	-	-	-	-	-	-	-
Daily Maximum:	52	52	55	55	59	63	66	76	82
( 11.1)	( 11.1)	( 12.8)	( 12.8)	( 15.0)	( 17.2)	( 18.9)	( 24.4)	( 27.8)
June	July	Aug.	Sept.	Sept.	Oct.	Oct.	Nov.	Dec.
16-30	1-31	1-31	1-15	16-30	1-15	16-31	1-30	1-31
Average:	84	84	84	84	-	-	-	-	-
( 28.9)	( 28.9)	( 28.9)	( 28.9)
Daily Maximum:	88	88	88	88	84	75	70	65	55
( 31.1)	( 31.1)	( 31.1)	( 31.1)	( 28.9)	( 23.9)	( 21.1)	( 18.3)	( 12.8)

(I) Maumee river - Ohio-Indiana state line to Maumee river estuary. Shown as degrees Fahrenheit and (Celsius).

Jan.	Feb.	Mar.	Mar.	Apr.	Apr.	May	May	June
1-31	1-29	1-15	16-31	1-15	16-30	1-15	16-31	1-15
Average:	45	45	47	53	58	61	67	70	75
( 7.2)	( 7.2)	( 8.3)	( 11.7)	( 14.4)	( 16.1)	( 19.4)	( 21.1)	( 23.9)
Daily Maximum:	50	50	52	58	63	68	72	76	80
( 10.0)	( 10.0)	( 11.1)	( 14.4)	( 17.2)	( 20.0)	( 22.2)	( 24.4)	( 26.7)
June	July	Aug.	Sept.	Sept.	Oct.	Oct.	Nov.	Dec.
16-30	1-31	1-31	1-15	16-30	1-15	16-31	1-30	1-31
Average:	85	85	85	85	80	71	65	58	45
( 29.4)	( 29.4)	( 29.4)	( 29.4)	( 26.7)	( 21.7)	( 18.3)	( 14.4)	( 7.2)
Daily Maximum:	89	89	89	89	85	76	70	63	50
( 31.7)	( 31.7)	( 31.7)	( 31.7)	( 29.4)	( 24.4)	( 21.1)	( 17.2)	( 10.0)

(J) Maumee bay - includes all waters of the state known as Maumee bay including the Maumee river estuary and the estuary portions of all tributaries entering Maumee bay to the lake Erie mean high water level. Shown as degrees Fahrenheit and (Celsius).

Jan.	Feb.	Mar.	Mar.	Apr.	Apr.	May	May	June
1-31	1-29	1-15	16-31	1-15	16-30	1-15	16-31	1-15
Average:	47	47	48	50	52	57	61	65	71
( 8.3)	( 8.3)	( 8.9)	( 10.0)	( 11.1)	( 13.9)	( 16.1)	( 18.3)	( 21.7)
Daily Maximum:	52	52	53	54	59	63	63	76	77
( 11.1)	( 11.1)	( 11.7)	( 12.2)	( 15.0)	( 17.2)	( 18.9)	( 24.4)	( 25.0)
June	July	Aug.	Sept.	Sept.	Oct.	Oct.	Nov.	Dec.
16-30	1-31	1-31	1-15	16-30	1-15	16-31	1-30	1-31
Average:	83	83	83	83	75	69	64	59	47
( 29.3)	( 28.3)	( 28.3)	( 28.3)	( 23.9)	( 20.6)	( 17.8)	( 15.0)	( 8.3)
Daily Maximum	87	87	87	87	80	74	69	64	52
( 30.6)	( 30.6)	( 30.6)	( 30.6)	( 26.7)	( 23.3)	( 20.6)	( 17.8)	( 11.1)

(K) Sandusky bay - includes all waters of the state known as Sandusky bay including the Sandusky river estuary and the estuary portions of all tributaries entering Sandusky bay to the lake Erie mean high water level. Shown as degrees Fahrenheit and (Celsius).

Jan.	Feb.	Mar.	Mar.	Apr.	Apr.	May	May	June
1-31	1-29	1-15	16-31	1-15	16-30	1-15	16-31	1-15
Average:	47	47	48	50	52	57	63	68	74
( 8.3)	( 8.3)	( 8.9)	( 10.0)	( 11.1)	( 13.9)	( 17.2)	( 20.0)	( 23.3)
Daily Maximum:	52	52	53	55	57	62	68	73	79
( 11.1)	( 11.1)	( 11.7)	( 12.8)	( 13.9)	( 16.7)	( 20.0)	( 22.8)	( 26.1)
June	July	Aug.	Sept.	Sept.	Oct.	Oct.	Nov.	Dec.
16-30	1-31	1-31	1-15	16-30	1-15	16-31	1-30	1-31
Average:	83	83	83	83	75	69	64	59	47
( 28.3)	( 28.3)	( 28.3)	( 28.3)	( 23.9)	( 20.6)	( 17.8)	( 15.0)	( 8.3)
Daily Maximum:	87	87	87	87	80	74	69	64	52
( 30.6)	( 30.6)	( 30.6)	( 30.6)	( 26.7)	( 23.3)	( 20.6)	( 17.8)	( 11.1)

(L) Cuyahoga river - headwaters of the Cuyahoga river gorge dam pool (river mile 46.2) to the Cuyahoga river ship channel (river mile 5.6 ). Shown as degrees Fahrenheit and (Celsius).

Jan.	Feb.	Mar.	Mar.	Apr.	Apr.	May	May	June
1-31	1-29	1-15	16-31	1-15	16-30	1-15	16-31	1-15
Average:	45	45	51	53	55	60	65	71	80
( 7.2)	( 7.2)	( 10.6)	( 11.7)	( 12.8)	( 15.6)	( 18.3)	( 21.7)	( 26.7)
Daily Maximum:	49	49	55	57	62	66	70	78	84
( 9.4)	( 9.4)	( 12.8)	( 13.9)	( 16.7)	( 18.9)	( 21.1)	( 25.6)	( 28.9)
June	July	Aug.	Sept.	Sept.	Oct.	Oct.	Nov.	Dec.
16-30	1-31	1-31	1-15	16-30	1-15	16-31	1-30	1-31
Average:	84	84	84	84	77	70	63	55	45
( 28.9)	( 28.9)	( 28.9)	( 28.9)	( 25.0)	( 21.1)	( 17.2)	( 12.8)	( 7.2)
Daily Maximum	88	88	88	88	82	75	69	64	52
( 31.1)	( 31.1)	( 31.1)	( 31.1)	( 27.8)	( 23.9)	( 20.6)	( 17.8)	( 11.1)

Table 35-12. Water quality criteria for the protection of wildlife.

Additional wildlife criteria for the lake Erie basin may be calculated pursuant to rule 3745-1-43 of the Administrative Code and will be available on the Ohio EPA website at http://www.epa.ohio.gov/dsw/wqs/criteria.aspx.

Criteria (OMZA)3
Chemical	Form1	Units2	lake Erie basin	Ohio river basin
DDT	T	µg/l	0.000011a	--
Mercury	TR	µg/l	0.0013	--
Polychlorinated biphenyls (PCBs)	T	µg/l	0.00012	0.001b
2,3,7,8-TCDD	T	µg/l	3.1 E-9	--

¹T = total; TR = total recoverable.

²µg/l = micrograms per liter (parts per billion).

³OMZA = outside mixing zone average.

^aThis criterion applies to the sum of DDT and metabolites.

^bIn addition, any whole sample of any representative aquatic organisms shall not exceed 0.64 mg/kg (wet weight).

Replaces: Part of: 3745-1-07

Ohio Admin. Code 3745-1-35

Effective: 2/6/2017
Five Year Review (FYR) Dates: 02/06/2022
Promulgated Under: 119.03
Statutory Authority: 6111.041
Rule Amplifies: 6111.041
Prior Effective Dates: 2/14/1978, 4/4/1985, 8/19/1985, 4/30/1987, 5/1/1990, 4/26/1997, 10/31/1997, 7/31/1998, 7/31/1999, 2/22/2002, 12/30/2002, 3/15/2010, 1/4/2016