The authorized enforcement agency may inspect and/or obtain samples from a discharger's property or premises as necessary to determine compliance with the requirements of this chapter. Upon request, the discharger shall allow the properly identified representatives of the authorized enforcement agency to enter the property or premises of the discharger at all hours necessary for the purposes of such inspection, investigation, or monitoring, including, but not limited to, smoke/dye testing, televising pipes, examination and/or copying of records that are required by this chapter to be maintained, sampling and excavation. The authorized enforcement agency shall provide the discharger reasonable advance notice of the need for such access, if possible and consistent with protection of public health and safety and the environment. The properly identified representatives may place on the discharger's property or premises the equipment or devices used for such sampling or inspection. Unreasonable delays in allowing access to a property or premises is a violation of this chapter.
If directed in writing to do so by the authorized enforcement agency, a discharger of stormwater runoff from any property or premises shall provide and operate equipment or devices for the monitoring of stormwater runoff to provide for inspection, sampling and flow measurement of each discharge to a water body or a stormwater drainage system, as specified by the authorized enforcement agency. The authorized enforcement agency may require a discharger to provide and operate such equipment and devices if it is necessary or appropriate for the inspection, sampling and flow measurement of discharges in order to determine whether adverse effects from, or as a result of, such discharges may occur. All such equipment and devices for the inspection, sampling and flow measurement of discharges shall be installed and maintained at the discharger's expense in accordance with applicable laws, ordinances and regulations.
Any discharger who accidentally discharges into a stormwater drainage system or a water body any substance other than stormwater or an allowable discharge shall immediately notify the authorized enforcement agency of the discharge. If the notification is given orally, a written report concerning the discharge shall be filed with the authorized enforcement agency within five days. The written report shall specify all of the following:
A. 
The composition of the discharge and the cause thereof.
B. 
The exact date, time and estimated volume of the discharge.
C. 
All measures taken to clean up the discharge, all measures taken or proposed to be taken to mitigate any known or potential adverse impacts of the discharge, and all measures proposed to be taken to reduce and prevent any recurrences.
D. 
The names and telephone numbers of the individual making the report and (if different) the individual who may be contacted for additional information regarding the discharge.
Any person that violates the requirement of this chapter or that is subject to monitoring under this chapter shall retain and preserve for no less than five years any and all books, drawings, plans, prints, documents, memoranda, reports, correspondence and records, including records on magnetic or electronic media, and any and all summaries of such records relating to monitoring, sampling and chemical analysis of any discharge or stormwater runoff from any property or premises connected with the violation or subject to monitoring.