For waters designated “no new discharge of a specified substance,” the specified substance shall not be permitted in new discharges. No increase in the release of the specified substance shall be permitted for any existing discharges. Storm water discharges are excepted from these restrictions. Storm water discharges and nonpoint sources of pollution shall be controlled by use of management practices to minimize the release of the specified substance to the designated waters and shall comply with other applicable requirements of this Title. The substance will be specified at the time the waters are designated.