CALPINE MID MERIT II LLC

NPDES permit PA0088781 · Major NON-POTW · effective, expires 2029-11-30 · 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.

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

2values over a limit
0required values missing, on 0 form(s)
0of 25 forms filed late

Last period with anything received: 2026-06-30. Most often over: Solids, total suspended (2).

Reporting

Reports are due about 28 days after each monitoring period ends (the most common figure among PA permits in EPA's filings — check your permit).

Limits in force (28)

OutfallParameterStatisticLimitMonths
001Temperature, water deg. fahrenheitDAILY MX report only all year
003pHDAILY MX report only all year
003Solids, total suspendedDAILY MX report only all year
003Oil & GreaseDAILY MX report only all year
003Copper, total [as Cu]DAILY MX report only all year
003Iron, total [as Fe]DAILY MX report only all year
003Nickel, total [as Ni]DAILY MX report only all year
003Zinc, total [as Zn]DAILY MX report only all year
012Temperature, water deg. fahrenheitDAILY MX report only all year
012pHDAILY MN >= 6 SU all year
012pHINST MAX <= 9 SU all year
012Solids, total suspendedMO AVG <= 30 mg/L all year
012Solids, total suspendedDAILY MX <= 60 mg/L all year
012Chloride [as Cl]DAILY MX report only all year
012Sulfate, total [as SO4]DAILY MX report only all year
012Copper, total [as Cu]QRTR AVG report only all year
012Copper, total [as Cu]DAILY MX report only all year
012Copper, total [as Cu]QRTR AVG report only all year
012Copper, total [as Cu]DAILY MX report only all year
012Aluminum, total [as Al]QRTR AVG report only all year
012Aluminum, total [as Al]DAILY MX report only all year
012Aluminum, total [as Al]QRTR AVG report only all year
012Aluminum, total [as Al]DAILY MX report only all year
012Flow, in conduit or thru treatment plantMO AVG report only all year
012Flow, in conduit or thru treatment plantDAILY MX report only all year
012Chlorine, free availableDAILY MX <= .2 mg/L all year
012Solids, total dissolvedDAILY MX report only all year
012Bromide [as Br]DAILY MX report only all year

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