The concentration in sewage of any of the following substances shall not exceed these concentrations judged by the Superintendent to be toxic to biological sewage treatment processes or to the biota of the receiving waters and shall not exceed the limits specified below at the point of discharge into the Town trunk sewer system or public sewer tributary thereto. These limits may be revised by the Superintendent in accordance with §§ 173-11 and 173-13 of Article V of this chapter.
Regulated Pollutant
Permissible Average Daily Concentration
(milligrams per liter)
Cadmium
0.7
Hexavalent chromium
2.0
Total chromium
3.0
Copper
2.8
Lead
0.4
Mercury
0.2
Nickel
2.8
Zinc
1.8
Arsenic
0.2
Total cyanide
0.8
Selenium
0.2
Barium
2.0
Silver
0.8
Phenols
4.0
Oil and grease
100.0
State requirements and limitations on discharges shall apply in any case where they are more stringent than federal requirements and limitations or those in this chapter.
Except where expressly authorized to do so by the Superintendent or by an applicable categorical pretreatment standard, no user shall ever increase the use of process water or in any way attempt to dilute a discharge as a partial or complete substitute for adequate treatment to achieve compliance with the limitations contained in the federal categorical pretreatment standards or in any other pollutant-specific limitation developed by the Town, county or state.
Each user shall provide protection from accidental discharge of prohibited materials or other substances regulated by this chapter. Facilities to prevent accidental discharge of prohibited materials shall be provided and maintained at the owner's or user's own cost and expense. Detailed plans showing facilities and operating procedures to provide this protection shall be submitted to the Town for review and shall be approved by the Town before construction of the facility. All existing users shall complete such a plan as directed by the Superintendent. No user who commences contribution to the publicly owned treatment works after the effective date of this chapter shall be permitted to introduce pollutants into the system until accidental discharge procedures have been approved by the Town. Review and approval of such plans and operating procedures shall not relieve the industrial user from the responsibility to modify the user's facility as necessary to meet the requirements of this chapter. In the case of an accidental discharge, it is the responsibility of the user to immediately telephone the Superintendent and notify the receiving publicly owned treatment works treatment plant of the incident. The notification shall include the location of the discharge, type of waste, concentration, volume and corrective actions.
Within five days following an accidental discharge, the user shall submit to the Superintendent a detailed written report describing the cause of the discharge and the measures to be taken by the user to prevent similar future occurrences. Such notification shall not relieve the user of any expense, loss, damage or other liability which may be incurred as a result of damage to the publicly owned treatment works, fish kills or any other damage to person or property nor shall such notification relieve the user of any fines, civil penalties or other liability which may be imposed by this chapter or other applicable law.
A notice shall be permanently posted on the user's bulletin board or other prominent place advising employees whom to call in the event of a dangerous discharge. Employers shall ensure that all employees who may cause or suffer such a dangerous discharge to occur are advised of the emergency notification procedure.