A. Compliance Required: Any use established in the M-1 Restricted Manufacturing District after the effective date hereof shall be so operated as to comply with the performance standards governing emission of toxic matter set forth hereinafter. No use lawfully established on the effective date hereof shall be so altered or modified as to conflict with, or further conflict with, the performance standards governing toxic matter established hereinafter.
B. Emission Limits: In the M-1 Restricted Manufacturing District, no activity or operation shall cause, at any time, the discharge of toxic matter across lot lines in such concentration as to be detrimental to or endanger the public health, safety, comfort or welfare, or cause injury to property or business.