Samples shall be taken at the frequencies specified in the WPDES permit authorizing discharge or as specified by the department where no permit has been issued or is required.
Wis. Admin. Code Department of Natural Resources NR 218.10
Samples shall be taken at the frequencies specified in the WPDES permit authorizing discharge or as specified by the department where no permit has been issued or is required.
Wis. Admin. Code Department of Natural Resources NR 218.10