101700.3(b)(1) (b) Testing results with fractional ppb readings of 0.5 ppb or greater shall be rounded up to the nearest whole number, before comparing to the Action Level. (1) A result with values of 5.5 ppb or greater shall be deemed an Action Level Exceedance. Licensee will ensure that the three water sources, outlet A, B, and C with an action level exceedance are covered/taped/sealed off and there is a label stating “DO NOT USE.” Proof of correction (POC) must be submitted to CCL by the POC due date.