40 CFR 63.5320 - How does my affected major source comply with the HAP emission standards?
(c) You must perform all of the items listed in paragraphs (c)(1) through (10) of this section:
(3) Submit the necessary reports in accordance with § 63.5420.
(4) Keep a finish inventory log, as specified at § 63.5335(b), to record monthly the pounds of each type of finish applied for each leather product process operation and the mass fraction of HAP in each applied finish. You may be required to start recordkeeping prior to the compliance dates specified at § 63.5295.
(5) Keep an inventory log, as specified at § 63.5430(f), to record monthly the surface area of leather processed in 1,000's of square feet for each product process operation. You may be required to start recordkeeping prior to the compliance dates specified at § 63.5295.
(8) Determine the compliance ratio for your affected source each month as specified at § 63.5330. The compliance ratio compares your actual HAP loss to your allowable HAP loss for the previous 12 months.