If sampling performed by a user indicates a violation, the user must notify the Director of Public Works within twenty-four (24) hours of becoming aware of the violation. The user shall also repeat the sampling and analysis and submit the results of the repeat analysis to the Director of Public Works within thirty (30) days after becoming aware of the violation. The user is not required to resample if the Director of Public Works monitors at the user's facility at least once a month, or if the Director of Public Works samples between the user's initial sampling and when the user receives the results of this sampling.