OCCIDENTAL CHEMICAL CORP

NPDES permit WA0037265 · Minor NON-POTW · administratively continued, expires 2021-11-30 · EPA's file as of 2026-09-19

Check this month's numbers before you file
Watch this permit — $79 a month. Every Monday, from EPA's newest files: the next report due and when, whether EPA's file holds your last one, any change to this permit's limits or status, and the renewal date.

This permit expired on 2021-11-30 and is administratively continued: its last limits keep applying until a new permit is issued, and EPA still expects the reports.

EPA's record, 2025-09-01 to 2026-08-31

0values over a limit
0required values missing, on 0 form(s)
1of 11 forms filed late

Last period with anything received: 2026-07-31.

Reporting

Reports are due about 15 days after each monitoring period ends (read off this permit's own late-day counts in EPA's filings).

Limits in force (20)

OutfallParameterStatisticLimitMonths
002Carbon tetrachlorideDAILY MX <= 4.4 ug/L Mar, Jul, Nov
002Carbon tetrachlorideDAILY MX <= 4.4 ug/L Mar, Jul, Nov
002ChloroformDAILY MX <= 75 ug/L Mar, Jul, Nov
002ChloroformDAILY MX <= 75 ug/L Mar, Jul, Nov
002Methylene chlorideDAILY MX <= 185 ug/L Mar, Jul, Nov
002Methylene chlorideDAILY MX <= 185 ug/L Mar, Jul, Nov
0021,1-DichloroethyleneDAILY MX <= 3.2 ug/L Mar, Jul, Nov
0021,1-DichloroethyleneDAILY MX <= 3.2 ug/L Mar, Jul, Nov
0021,1,2-TrichloroethaneDAILY MX <= 5 ug/L Mar, Jul, Nov
0021,1,2-TrichloroethaneDAILY MX <= 5 ug/L Mar, Jul, Nov
0021,1,2,2-TetrachloroethaneDAILY MX <= 11 ug/L Mar, Jul, Nov
0021,1,2,2-TetrachloroethaneDAILY MX <= 11 ug/L Mar, Jul, Nov
002Vinyl chlorideDAILY MX <= 5 ug/L Mar, Jul, Nov
002Vinyl chlorideDAILY MX <= 5 ug/L Mar, Jul, Nov
002FlowDAILY MX <= 216000 gal/d all year
002FlowDAILY MX <= 216000 gal/d all year
002TetrachloroetheneDAILY MX <= 8.9 ug/L Mar, Jul, Nov
002TetrachloroetheneDAILY MX <= 8.9 ug/L Mar, Jul, Nov
002TrichloroetheneDAILY MX <= 81 ug/L Mar, Jul, Nov
002TrichloroetheneDAILY MX <= 81 ug/L Mar, Jul, Nov

Built from EPA's ECHO bulk files. EPA's file, not the permit document, is the source: read your permit. Check a report before you file it · All states