StacksVerified U.S. regulatory reference

40 CFR Part 63, Table 9

Verified against eCFR.gov as of June 20, 2026View official text on eCFR.gov
For demonstrating . . .For the following emission points and types of processes . . .Collect samples according to the following schedule . . .
Vinyl chloride . . .Total non-vinyl chloride organic HAP . . .

Each stripped resin stream

1. Initial compliancea. ContinuousEvery 8 hours or for each grade, whichever is more frequent during a 24 hour periodEvery 8 hours or for each grade, whichever is more frequent during a 24 hour period.
b. Batch1 grab sample for each batch produced during a 24 hour period1 grab sample for each batch produced during a 24 hour period.
2. Continuous compliancea. ContinuousOn a daily basis, 1 grab sample every 8 hours or for each grade, whichever is more frequent during a 24 hour periodOn a monthly basis, 1 grab sample every 8 hours or for each grade, whichever is more frequent during a 24 hour period.
b. BatchOn a daily basis, 1 grab sample for each batch produced during a 24 hour periodOn a monthly basis, 1 grab sample for each batch produced during a 24 hour period.

Each process wastewater stream

3. Initial complianceN/A1 grab sample1 grab sample.
4. Continuous complianceN/A1 grab sample per month1 grab sample per month.