CEDAR ROCK MATERIALS CORP

NPDES permit PA0224774 · Minor NON-POTW · administratively continued, expires 2026-06-13 · 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 2026-06-13 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
114required values missing, on 9 form(s)
12of 30 forms filed late

Last period with anything received: 2026-03-31.

Reporting

Reports are due about 28 days after each monitoring period ends (read off this permit's own late-day counts in EPA's filings).

Limits in force (76)

OutfallParameterStatisticLimitMonths
001pHINST MIN >= 6 SU all year
001pHINST MIN >= 6 SU all year
001pHINST MAX <= 9 SU all year
001pHINST MAX <= 9 SU all year
001Alkalinity, total [as CaCO3]INST MAX report only all year
001Alkalinity, total [as CaCO3]INST MAX report only all year
001Acidity, total [as CaCO3]INST MAX report only all year
001Acidity, total [as CaCO3]INST MAX report only all year
001Solids, total suspendedMO AVG <= 35 mg/L all year
001Solids, total suspendedMO AVG <= 35 mg/L all year
001Solids, total suspendedDAILY MX <= 70 mg/L all year
001Solids, total suspendedDAILY MX <= 70 mg/L all year
001Solids, total suspendedINST MAX <= 90 mg/L all year
001Solids, total suspendedINST MAX <= 90 mg/L all year
001Flow, in conduit or thru treatment plantMO AVG <= 1.65 MGD all year
001Flow, in conduit or thru treatment plantMO AVG <= 1.65 MGD all year
001Flow, in conduit or thru treatment plantDAILY MX <= 1.65 MGD all year
001Flow, in conduit or thru treatment plantDAILY MX <= 1.65 MGD all year
001Alkalinity - Acidity [as CaCO3]INST MIN >= 0 mg/L all year
001Alkalinity - Acidity [as CaCO3]INST MIN >= 0 mg/L all year
002pHINST MIN >= 6 SU all year
002pHINST MIN >= 6 SU all year
002pHINST MAX <= 9 SU all year
002pHINST MAX <= 9 SU all year
002Alkalinity, total [as CaCO3]INST MAX report only all year
002Alkalinity, total [as CaCO3]INST MAX report only all year
002Acidity, total [as CaCO3]INST MAX report only all year
002Acidity, total [as CaCO3]INST MAX report only all year
002Solids, total suspendedMO AVG <= 35 mg/L all year
002Solids, total suspendedMO AVG <= 35 mg/L all year
002Solids, total suspendedDAILY MX <= 70 mg/L all year
002Solids, total suspendedDAILY MX <= 70 mg/L all year
002Solids, total suspendedINST MAX <= 90 mg/L all year
002Solids, total suspendedINST MAX <= 90 mg/L all year
002Flow, in conduit or thru treatment plantDAILY MX report only all year
002Flow, in conduit or thru treatment plantDAILY MX report only all year
002Alkalinity - Acidity [as CaCO3]INST MIN >= 0 mg/L all year
002Alkalinity - Acidity [as CaCO3]INST MIN >= 0 mg/L all year
003pHINST MIN >= 6 SU all year
003pHINST MIN >= 6 SU all year
003pHINST MAX <= 9 SU all year
003pHINST MAX <= 9 SU all year
003pHINST MIN >= 6 SU all year
003pHINST MIN >= 6 SU all year
003pHINST MAX <= 9 SU all year
003pHINST MAX <= 9 SU all year
003pHINST MIN >= 6 SU all year
003pHINST MIN >= 6 SU all year
003pHINST MAX <= 9 SU all year
003pHINST MAX <= 9 SU all year
003Alkalinity, total [as CaCO3]INST MAX report only all year
003Alkalinity, total [as CaCO3]INST MAX report only all year
003Alkalinity, total [as CaCO3]INST MAX report only all year
003Alkalinity, total [as CaCO3]INST MAX report only all year
003Alkalinity, total [as CaCO3]INST MAX report only all year
003Alkalinity, total [as CaCO3]INST MAX report only all year
003Acidity, total [as CaCO3]INST MAX report only all year
003Acidity, total [as CaCO3]INST MAX report only all year
003Acidity, total [as CaCO3]INST MAX report only all year
003Acidity, total [as CaCO3]INST MAX report only all year
003Acidity, total [as CaCO3]INST MAX report only all year
003Acidity, total [as CaCO3]INST MAX report only all year
003Solids, total suspendedMO AVG <= 35 mg/L all year
003Solids, total suspendedMO AVG <= 35 mg/L all year
003Solids, total suspendedDAILY MX <= 70 mg/L all year
003Solids, total suspendedDAILY MX <= 70 mg/L all year
003Solids, total suspendedINST MAX <= 90 mg/L all year
003Solids, total suspendedINST MAX <= 90 mg/L all year
003Solids, settleableINST MAX <= .5 mL/L all year
003Solids, settleableINST MAX <= .5 mL/L all year
003Alkalinity - Acidity [as CaCO3]INST MIN >= 0 mg/L all year
003Alkalinity - Acidity [as CaCO3]INST MIN >= 0 mg/L all year
003Alkalinity - Acidity [as CaCO3]INST MIN >= 0 mg/L all year
003Alkalinity - Acidity [as CaCO3]INST MIN >= 0 mg/L all year
003Alkalinity - Acidity [as CaCO3]INST MIN >= 0 mg/L all year
003Alkalinity - Acidity [as CaCO3]INST MIN >= 0 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