Section 60.402 - Standard for particulate matter(a) On and after the date on which the performance test required to be conducted by § 60.8 is completed, no owner or operator subject to the provisions of this subpart shall cause to be discharged into the atmosphere: (1) From any phosphate rock dryer any gases which:(i) Contain particulate matter in excess of 0.030 kilogram per megagram of phosphate rock feed (0.06 lb/ton), or(ii) Exhibit greater than 10-percent opacity.(2) From any phosphate rock calciner processing unbeneficiated rock or blends of beneficiated and unbeneficiated rock, any gases which: (i) Contain particulate matter in excess of 0.12 kilogram per megagram of phosphate rock feed (0.23 lb/ton), or(ii) Exhibit greater than 10-percent opacity.(3) From any phosphate rock calciner processing beneficiated rock any gases which: (i) Contain particulate matter in excess of 0.055 kilogram per megagram of phosphate rock feed (0.11 lb/ton), or(ii) Exhibit greater than 10-percent opacity.(4) From any phosphate rock grinder any gases which:(i) Contain particulate matter in excess of 0.006 kilogram per megagram of phosphate rock feed (0.012 lb/ton), or(ii) Exhibit greater than zero-percent opacity.(5) From any ground phosphate rock handling and storage system any gases which exhibit greater than zero-percent opacity.47 FR 16589, Apr. 16, 1982, as amended at 65 FR 61760 , Oct. 17, 2000