Martin Marietta Materials, Inc.

NPDES permit TN0071030 · Minor NON-POTW · effective, expires 2028-05-31 · 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

0values over a limit
0required values missing, on 0 form(s)
0of 12 forms filed late

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

Reporting

Reports are due about 15 days after each monitoring period ends (the most common figure among TN permits in EPA's filings — check your permit).

Limits in force (24)

OutfallParameterStatisticLimitMonths
001Flow rateMO AVG report only all year
001Flow rateMO AVG report only all year
001Flow rateDAILY MX report only all year
001Flow rateDAILY MX report only all year
001pHMINIMUM >= 6 SU all year
001pHMINIMUM >= 6 SU all year
001pHMAXIMUM <= 9 SU all year
001pHMAXIMUM <= 9 SU all year
001Suspended Solids, TotalMO AVG <= 40 mg/L all year
001Suspended Solids, TotalMO AVG <= 40 mg/L all year
001Suspended Solids, TotalDAILY MX <= 40 mg/L all year
001Suspended Solids, TotalDAILY MX <= 40 mg/L all year
SW1pHMINIMUM >= 6 SU (alert) all year
SW1pHMAXIMUM <= 9 SU (alert) all year
SW1Solids, total suspendedDAILY MX <= 150 mg/L (alert) all year
SW1Oil & GreaseDAILY MX <= 15 mg/L (alert) all year
SW1Flow, in conduit or thru treatment plantMINIMUM report only (alert) all year
SW1Flow, in conduit or thru treatment plantMAXIMUM report only (alert) all year
SW2pHMINIMUM >= 6 SU (alert) all year
SW2pHMAXIMUM <= 9 SU (alert) all year
SW2Solids, total suspendedDAILY MX <= 150 mg/L (alert) all year
SW2Oil & GreaseDAILY MX <= 15 mg/L (alert) all year
SW2Flow, in conduit or thru treatment plantMINIMUM report only (alert) all year
SW2Flow, in conduit or thru treatment plantMAXIMUM report only (alert) 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