CALPINE MID MERIT LLC

NPDES permit PA0282022 · Minor NON-POTW · effective, expires 2031-04-30 · EPA's file as of 2026-09-19

Check this month's numbers before you file

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

0values over a limit
0required values missing, on 0 form(s)
0of 3 forms filed late

Last period with anything received: 2026-06-30.

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 (25)

OutfallParameterStatisticLimitMonths
002pHDAILY MX report only all year
002Solids, total suspendedDAILY MX report only all year
002Oil & GreaseDAILY MX report only all year
002Copper, total [as Cu]DAILY MX report only all year
002Iron, total [as Fe]DAILY MX report only all year
002Nickel, total [as Ni]DAILY MX report only all year
002Zinc, total [as Zn]DAILY MX report only all year
011Temperature, water deg. fahrenheitDAILY MX report only all year
011Temperature, water deg. fahrenheitINST MAX <= 110 deg F all year
011pHDAILY MN >= 6 SU all year
011pHINST MAX <= 9 SU all year
011Solids, total suspendedMO AVG <= 30 mg/L all year
011Solids, total suspendedDAILY MX <= 60 mg/L all year
011Solids, total suspendedINST MAX <= 75 mg/L all year
011Oil & GreaseMO AVG <= 15 mg/L all year
011Oil & GreaseDAILY MX <= 20 mg/L all year
011Oil & GreaseINST MAX <= 30 mg/L all year
011Aluminum, total [as Al]QRTR AVG report only all year
011Aluminum, total [as Al]DAILY MX report only all year
011Aluminum, total [as Al]QRTR AVG report only all year
011Aluminum, total [as Al]DAILY MX report only all year
011Flow, in conduit or thru treatment plantMO AVG report only all year
011Flow, in conduit or thru treatment plantDAILY MX report only all year
011Chlorine, free availableDAILY MX <= .2 mg/L all year
011Chlorine, free availableINST MAX <= .5 mg/L 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