Hot mix asphalt plants installed or commenced after the effective date of the ordinance codified in this chapter shall not emit particulate matter into the atmosphere in excess of the quantity set out in table 4, set out in section 8.16.390 of this chapter. Existing hot mix asphalt plants shall not emit particulate matter into the atmosphere in excess of the quantity emitted at plants exhibiting good operation and economic control. Within one year, all hot mix asphalt plants shall comply with the emission rate shown on table 4 set out in section 8.16.390 of this chapter, or a new rate to be determined by testing and experience. (Ord. 316 §22(a), 1970)