Speedwash Cleaners violated the requirements of the National Perchloroethylene Air Emission Standards for Dry Cleaning Facilities ( Perc dry cleaning regulations ), found at 40 CFR Sections 63.324(d), 63.324(d)(1), 63.324(d)(2), 63.324(d)(3), 63.324(d)(5), and 63.324(e).