- (a) A CWS O/O shall collect 4 consecutive quarterly samples for compliance gross alpha, combined radium-226 and radium-228, and uranium at all sampling points identified in the sampling schedule established pursuant to Env-Dw 708.01.
- (b) The samples required by (a), above, shall be taken in the quarters designated in the sampling schedule established pursuant to Env-Dw 708.01 during each compliance period.
- (c) If the results of the samples from the first 2 quarters are below the detection limits as specified in Env-Dw 710.12(b), the CWS O/O may submit a written request to the department for the monitoring frequency to be reduced.
(d) A written request submitted pursuant to (c), above, shall contain the following:
- (1) The name of the CWS;
- (2) The PWS identifier for the CWS; and
- (3) A summary of the historical radionuclide data from the system and nearby systems, when available.
- (e) Upon determination by the department that the results are all below the detection limits, as listed in Table 710-2, the final 2 quarters of the initial monitoring shall be dismissed and the monitoring frequency shall be as specified in Env-Dw 710.08.
Source. #9700, eff 5-1-10; amd by #10771, eff 2-1-15; ss by #12668, eff 1-1-19