N.H. Code Admin. R. Env-Ws 382.03
(a) "Blended sample" means a water quality sample taken from an active drinking water source which operates simultaneously or alternates automatically between pump operating cycles, and from which the discharge is combined before entering the water supply distribution system, pursuant to Env-Ws 321.11.
(b) "Community water system" means "community water system" as defined in RSA 485:1-a, I, namely "a public water system which serves at least 15 service connections used by year-round residents or regularly serves at least 25 year-round residents."
(c) "Dissolved Organic Carbon (DOC)" means dissolved organic carbon in mg/L measured using the same methods as total organic carbon on a sample that has been passed through a 0.45 µm pore diameter filter.
(d) "Enhanced coagulation" means the addition of sufficient coagulant for improved removal of disinfection byproduct precursors by conventional filtration treatment.
(e) "Enhanced softening" means the improved removal of disinfection byproduct precursors by precipitative softening.
(f) "Granular activated carbon (GAC10)" means granular activated carbon filter beds with an empty-bed contact time of 10 minutes, based on average daily flow and a carbon reactivation frequency of every 180 days.
(g) "Haloacetic acids five (HAA5)" mean the sum of the concentrations in milligrams per liter (mg/L), rounded to 2 significant figures after addition, of the haloacetic acid compounds which are monochloroacetic acid, dichloroacetic acid, trichloroacetic acid, monobromoacetic acid, and dibromoacetic acid.
(h) "Liters per milligram-meter (L/mg-m)" means the unit of measure of specific ultraviolet absorption (SUVA).
(i) "Maximum residual disinfectant level (MRDL)" means a level of a disinfectant added for water treatment that cannot be exceeded at the consumer's tap without an unacceptable possibility of adverse health effects.
(j) "Maximum residual disinfectant level goal" (MRDLG) means the maximum level of a disinfectant added for water treatment at which no known or anticipated adverse effect on the health of persons would occur, and which allows an adequate margin of safety.
(k) "Non-transient non-community water system" means "non-transient non-community water system" as defined in RSA 485:1-a, XI, namely "a system which is not a community water system and which serves the same 25 people, or more, over 6 months per year."
(l) "Paired samples" means samples collected and analyzed for total organic carbon (TOC) in the source water prior to any treatment at the same time samples are collected and analyzed for TOC in the treated water.
(m) "Specific Ultraviolet Absorption (SUVA)" means an indicator of the humic content of water obtained by dividing a sample's ultraviolet absorption at a wavelength of 254 nm (UV254) in m-1 by its concentration of dissolved organic carbon (DOC) in mg/L.
(n) "Surface Water/Groundwater Under the Influence of Surface Water System(SW/GWUDISW) means a public water system using surface water or ground water under the direct influence of surface water as a source that is subject to the requirements of this part.
(o) "Transient non-community water system" means a "transient non-community water system" as defined in Env-Ws 302.02(bt), namely "a non-community water system that does not regularly serve at least the same 25 persons over 6 months per year."
(p) "Total organic carbon" (TOC) means total organic carbon in mg/L measured using heat, oxygen, ultraviolet irradiation, chemical oxidants, or combinations of these oxidants that convert organic carbon to carbon dioxide, rounded to 2 significant figures.
(q) "Treatment plant" means, for the purposes of this part, the location at which a disinfectant is added to well water or surface water.
N.H. Code Admin. R. Env-Ws 382.03
(See third Revision Note at chapter heading Env-Ws 300) #7735, eff 8-2-02