United States Environmental Protection Agency General . - EPAquarrying, rock crushing, and screening plant for which a reviewing authority issues an . The terms used herein shall have the meaning as defined in 40 CFR 49.152, . This permit does not release the permittee from any liability for compliance . 15. The permittee shall maintain and operate each affected emissions unit,.what does 15 opacity mean with rock crusher,(NSPS) Subpart OOO Guidance Document - ColoradoOOO? and Part II – What are the Old and New Opacity and Stack Emissions Requirements? . concrete plants, portland cement plants or any other facilities that crush or grind the following . the definition of saturated materials (§ 60.671), material that is solely wetted by . have a fugitive emission limit of 15 percent opacity.
what does 15 opacity mean with rock crusher