SAN DIEGO COUNTY AIR POLLUTION CONTROL DISTRICT

RULE 260.42a - STANDARD FOR PARTICULATE MATTER

(a) On and after the date on which the performance test required to be conducted under Rule 260.8 is completed, no owner or operator subject to the provisions of this subpart shall cause to be discharged into the atmosphere from any affected facility any gases which contain particulate matter in excess of:

1. 13 ng/J (0.03 lb/million Btu) heat input derived from the combustion of solid, liquid, or gaseous fuel;
   
   
2. 1 percent of the potential combustion concentration (99 percent reduction) when combusting solid fuel; and
   
   
3. 30 percent of potential combustion concentration (70 percent reduction) when combusting liquid fuel.
   
   

(b) On and after the date the particulate matter performance test required to be conducted under Rule 260.8 is completed, no owner or operator subject to the provisions of this subpart shall cause to be discharged into the atmosphere from any affected facility any gases which exhibit greater than 20 percent opacity (6-minute average), except for one 6-minute period per hour of not more than 27 percent opacity.