- (a) The O/O of a groundwater system shall collect one sample at each sample point during each 3-year compliance period.
- (b) The O/O of a surface water system, or combined surface/groundwater system, shall collect one sample at each sample point annually.
- (c) The frequency of monitoring for asbestos shall be as specified in Env-Dw 711.09 through Env-Dw 711.17.
- (d) The frequency of monitoring for nitrate and nitrite shall be as specified in Env-Dw 711.18 through Env-Dw 711.26.
- (e) The department shall waive the requirement for a community water system or non-transient, non-community water system to monitor for cyanide if the department determines that the PWS is not vulnerable to cyanide due to a lack of any industrial source(s) within the wellhead contributing area.
- (f) If the cyanide monitoring requirement is waived pursuant to (e), above, the O/O of each affected water system shall take not less than one sample every 9 years.
Source. #9700, eff 5-1-10; ss by #12668, eff 1-1-19