NR 809.113(4)(e)(e) The detection limits in Table C, are the detection limits that laboratories shall use for each analytical method and MCLs for inorganic contaminants specified in this section and s. NR 809.11: TABLE C
Detection Limits for Inorganic Contaminants
1 MFL = million fibers per liter >10 mm.
2 Using a 2X preconcentration step as noted in Method 200.7. Lower MDLs may be achieved when using a 4X preconcentration.
3 Screening method for total cyanides.
4 Measures “free” cyanides when distillation, digestion, or ligand exchange is omitted.
5 Lower MDLs are reported using stabilized temperature graphite furnace atomic absorption.
6 The MDL reported for EPA method 200.9 (Atomic Absorption; Platform—Stabilized Temperature) was determined using a 2x concentration step during sample digestion. The MDL determined for samples analyzed using direct analyses (i.e., no sample digestion) will be higher. Using multiple depositions, EPA 200.9 is capable of obtaining MDL of 0.0001 mg/L.
7 Using selective ion monitoring, EPA Method 200.8 (ICP-MS) is capable of obtaining a MDL of 0.0001 mg/L.
8 Measures total cyanides when UV-digestor is used, and “free” cyanides when UV-digestor is bypassed.
NR 809.113 HistoryHistory: CR 09-073: cr. Register November 2010 No. 659, eff. 12-1-10; CR 15-049: am. (1) Table A, (4) Table C Register March 2016 No. 723, eff. 4-1-16. NR 809.115NR 809.115 Monitoring requirements for inorganic contaminants. NR 809.115(1)(1) General. Water suppliers shall conduct monitoring for the contaminants listed in s. NR 809.11 (2) for the purpose of determining compliance with the maximum contaminant levels shall be conducted as follows: NR 809.115(1)(a)(a) Groundwater sources shall be sampled under normal operating conditions at every entry point to the distribution system which is representative of each well being used after treatment, beginning in the initial compliance period. Each sample shall be taken at the same location unless conditions make another location more representative of each source or treatment plant. NR 809.115(1)(b)(b) Surface water sources or combined surface water and groundwater sources shall be sampled under normal operating conditions, at every entry point to the distribution system after any application of treatment or in the distribution system at a point which is representative of each source after treatment, beginning in the initial compliance period. Each sample shall be taken at the same location unless conditions make another location more representative of each source or treatment plant. NR 809.115(1)(c)(c) If a public water system draws water from more than one source and the sources are combined before distribution, the public water system shall be sampled at an entry point to the distribution system during periods of normal operating conditions when water is representative of all sources being used. NR 809.115(1)(d)(d) Water suppliers for all new public water systems or for public water systems that use a new source of water that begin operation after January 22, 2004 shall demonstrate compliance with the MCLs specified in s. NR 809.11 (2) in accordance with the requirements in this section. The water supplier shall also comply with the initial and routine sampling frequencies specified by the department to ensure a water supplier can demonstrate that the public water supply is in compliance with the MCLs. Routine and increased monitoring frequencies shall be conducted in accordance with the requirements of this section. NR 809.115(2)(2) Monitoring frequency for asbestos. Water suppliers shall monitor public water systems to determine compliance with the maximum contaminant level for asbestos specified in s. NR 809.11 (2) at the following frequencies: NR 809.115(2)(a)(a) Initial and routine monitoring. Each community and non-transient, non-community water system shall monitor for asbestos during the first 3-year compliance period of each 9-year compliance cycle beginning in the compliance period starting January 1, 1993, unless a waiver is granted under par. (d). NR 809.115(2)(b)(b) Waiver request. If the water supplier believes the public water system it is not vulnerable to either asbestos contamination in its source water or due to corrosion of asbestos-cement pipe, or both, the water supplier may apply to the department for a waiver of the monitoring requirement in par. (a). NR 809.115(2)(c)(c) Waiver evaluation. The department may grant a waiver based on a consideration of all the following factors: NR 809.115(2)(d)(d) Waiver conditions. The department may grant a waiver if the conditions in par. (b) and (c) are satisfied. A waiver remains in effect until the completion of the 3-year compliance period. Water suppliers for public water systems that do not receive a waiver shall monitor in accordance with the provisions of par. (a). NR 809.115(2)(e)(e) Monitoring frequency with waiver. If the department grants the waiver, the water supplier is not required to monitor under par. (a). NR 809.115(2)(f)1.1. A public water system vulnerable to asbestos contamination due solely to corrosion of asbestos-cement pipe shall be sampled once at a tap served by asbestos-cement pipe and under conditions where asbestos contamination is most likely to occur. NR 809.115(2)(f)2.2. A public water system vulnerable to asbestos contamination due both to its source water supply and corrosion of asbestos-cement pipe shall be sampled once at a tap served by asbestos-cement pipe and under conditions where asbestos contamination is most likely to occur.