Section Env-Wq 1703.22 - Notes For Table 1703-1 The following shall apply to Table 1703-1:
(a) The letter "a" shall indicate that the freshwater and saltwater aquatic life criteria for ammonia are shown in Env-Wq 1703.25 through Env-Wq 1703.32.(b) The letter "b" shall indicate that the criteria refer to the inorganic form only.(c) The letter "c" shall indicate that these criteria for the protection of human health are based on carcinogenicity using a risk factor of one in 1,000,000, while the human health criteria without this footnote are based on systemic toxicity. Other risk factors shall be allowed only as specified in Env-Wq 1703.20.(d) The letter "d" shall indicate that criteria for these metals are expressed as a function of the water effect ratio (WER) as defined in 40 CFR 131.36(c), and that because the values displayed in Table 1703-1 correspond to a WER of 1.0, metals criteria for different WERs shall be determined using the procedures described in the EPA publication "Interim Guidance on Determination and Use of Water-Effect Ratios for Metals", EPA-823-B-94-001, dated February 1994, available as noted in Appendix B, provided that for copper, either of the following references, both available as noted in Appendix B, may be used: (1) The "Streamlined Water-Effect Ratio procedure for Discharges of Copper", EPA-822-R-01-005, dated March 2001; or(2) The Biotic Ligand Model (freshwater only) as described in "Aquatic Life Ambient Freshwater Quality Criteria - Copper", EPA-822-R-07-001, dated February 2007.(e) The letter "e" shall indicate that the following classes of compounds have 2 or more isomers and the appropriate aquatic life criteria apply to the sum of the concentrations of each isomer: (2) Chlorinated benzenes;(3) Chlorinated naphthalenes;(16) Polynuclear aromatic hydrocarbons;(17) Tetrachloroethanes; and(18) Trichlorinatedethanes.(f) The letter "f" shall indicate that the freshwater aquatic criteria for these metals are expressed as a function of the total hardness, as mg/l CaCO3 of the surface water, and that because the values displayed in Table 1703-1 correspond to a total hardness of 20 mg/l the aquatic life criteria for other hardness values expressed as calcium carbonate shall be calculated using the equations and tables in Env-Wq 1703.23 and Env-Wq 1703.24.(g) The letter "g" shall indicate that if the methylmercury concentration in the edible portion of the aquatic species of concern exceeds 0.3 mg/kg, a risk assessment shall be conducted to determine whether a consumption advisory should be issued for the surface water. If a consumption advisory is issued by the department, the surface water shall be considered in non-attainment of the fish and/or shellfish consumption designated uses and in violation of these surface water quality regulations.(h) The letter "h" shall indicate that the freshwater aquatic life criteria for pentachlorophenol are expressed as a function of pH. Values displayed in Table 1703-1 correspond to a pH value of 6.5. For other pH values, the formulas shown in Env-Wq 1703.32 shall be used.(i) The letter "i" shall indicate that the values presented for aquatic life protection are dissolved metals and for hardness-dependent metals are based on a hardness of 20 mg/L. To convert dissolved to total recoverable metal, the equations and tables in Env-Wq 1703.23 shall be used. To calculate dissolved or total recoverable fresh water criteria for hardness-dependent metals for hardness values other than 20 mg/l, the equations and tables shown in Env-Wq 1703.23 and Env-Wq 1703.24 shall be used.(j) The letter "j" shall indicate that these human health criteria prevent taste and odor effects in the surface water and in fish and other aquatic life as prohibited in Env-Wq 1703.03(c)(1)c. and (3).(k) The letter "k" shall indicate that these criteria are based on EPA's 304(a) criteria in the 1980 documents listed below and were derived to be used as instantaneous maximum values, or to be applied after division by 2, to obtain a value comparable to an acute criterion derived using the 1985 Guidelines, when assessment is done using an averaging period: (1) Aldrin/Dieldrin, document number 440/5-80-019;(2) Chlordane, document number 440/5-80-027;(3) DDT, document number 440/5-80-038;(4) Endosulfan, document number 440/5-80-046;(5) Endrin, document number 440/5-80-047;(6) Heptachlor, document number 440/5-80-052;(7) Hexachlorocyclohexane, document number 440/5-80-054; or(8) Silver, document number 440/5-80-071.(l) The letter "1" shall indicate that there is a more stringent drinking water maximum contaminant level (MCL) specified in Env-Dw 700, so if the surface water is a source for a public water system as defined in RSA 485:1-a, XV or is within 20 miles upstream of any active surface water intake for a public water system, the department shall use the MCL values shown in table 1703-2A, below, for the water and fish ingestion human health criteria: Table 1703-2A: MCL Values for Water and Fish Ingestion Criteria
CAS Number | Chemical Name | MCL (Units per Liter) |
7440417 | Beryllium | 4 µg |
7440439 | Cadmium | 5 µg |
7782505 | Chlorine (as Cl2) | 4 mg |
94757 | Chlorophenoxy herbicides (2,4-D) | 70 µg |
93721 | Chlorophenoxy herbicides (2,4,5-TP) | 50 µg |
18540299 | Chromium+6 | see Chromium Total |
16065831 | Chromium+3 | see Chromium Total |
7440473 | Chromium Total (equal to the sum of Chromium+3 plus Chromium+6) | 100 µg |
95501 | Dichlorobenzene (1,2) | 600 µg |
106467 | Dichlorobenzene(1,4) | 75 µg |
107062 | Dichloroethane (1,2) | 5 µg |
75354 | Dichloroethylene(1,1) | 7 µg |
156605 | Dichloroethylene(1,2-Trans) | 100 µg |
58899 | gamma-BHC (Lindane) | 0.2 µg |
72435 | Methoxychlor | 40 µg |
7782492 | Selenium | 50 µg |
108883 | Toluene | 1 mg |
71556 | Trichloroethane 1,1,1 | 200 µg |
(m) The letter "m" shall indicate that this criteria is expressed as micrograms of free cyanide per liter.(n) The letter "n" shall indicate that this criteria applies to total PCBs or the sum of all of its congener or isomer or homolog or Arochlor analyses.(o) The letter "o" shall indicate that the freshwater acute criteria for selenium shall be calculated using the values for the fraction f1 of selenite and f2 of selenate measured in the receiving water. To calculate the acute criteria, in µg/l, the number 1 shall be divided by the sum of the fractions f1 divided by 185.9 and f2 divided by 12.83, as follows: Acute Criteria = 1/ (f1/185.9) + (f2/12.83)
(p) The letter "p" shall indicate that these human health criteria for silver shall be for the protection of humans from argyria.(q) The letter "q" shall indicate that this value is expressed as total cyanide.(r) The letter "r" shall indicate that this data was derived from data for endosulfan and is most appropriately applied to the sum of alpha-endosulfan and beta-endosulfan.(s) The letter "s" shall indicate that this value is expressed as acid-soluble aluminum.(t) The letter "t" shall indicate that the total concentration of DDT and its metabolites shall not exceed this value.(u) The letter "u" shall indicate that the chronic criterion of 20 mg/L shall be the minimum value except where alkalinity is naturally lower, in which case the criterion shall not be lower than 25 percent of the natural level.N.H. Code Admin. R. Env-Wq 1703.22
(See Revision Note #1 at chapter heading for Env-Wq 1700) #7151, eff 12-10-99; ss by #9034, INTERIM, eff 12-10-07; ss by #9162, eff 5-21-08 (See Revision Note #2 at chapter heading for Env-Wq 1700)
Amended by Volume XXXVI Number 49, Filed December 8, 2016, Proposed by #12042, Effective 12/1/2016, Expires 12/1/2026.