Vulcan Construction Materials, LLC - Black Rock Quarry

NPDES permit AR0046922 · Minor NON-POTW · administratively continued, expires 2026-02-28 · EPA's file as of 2026-09-19

Check this month's numbers before you file

This permit expired on 2026-02-28 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)
0of 11 forms filed late

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

Reporting

Reports are due about 25 days after each monitoring period ends (the most common figure among AR permits in EPA's filings — check your permit).

Limits in force (24)

OutfallParameterStatisticLimitMonths
001Oxygen demand, chem. [low level] [COD]MO AVG <= 50 mg/L all year
001Oxygen demand, chem. [low level] [COD]DAILY MX <= 75 mg/L all year
001Oxygen demand, chem. [low level] [COD]MO AVG <= 180.1 lb/d all year
001Oxygen demand, chem. [low level] [COD]DAILY MX <= 270.2 lb/d all year
001pHMINIMUM >= 6 SU all year
001pHMAXIMUM <= 9 SU all year
001Solids, total suspendedMO AVG <= 20 mg/L all year
001Solids, total suspendedDAILY MX <= 30 mg/L all year
001Solids, total suspendedMO AVG <= 72.1 lb/d all year
001Solids, total suspendedDAILY MX <= 108.1 lb/d all year
001Oil & GreaseMO AVG <= 10 mg/L all year
001Oil & GreaseDAILY MX <= 15 mg/L all year
001Oil & GreaseMO AVG <= 36 lb/d all year
001Oil & GreaseDAILY MX <= 54 lb/d all year
001Flow, in conduit or thru treatment plantMO AVG report only all year
001Flow, in conduit or thru treatment plantDAILY MX report only all year
001Sulfates, total [as SO4]MO AVG <= 260 mg/L all year
001Sulfates, total [as SO4]DAILY MX <= 390 mg/L all year
001Sulfates, total [as SO4]MO AVG <= 936.7 lb/d all year
001Sulfates, total [as SO4]DAILY MX <= 1405.1 lb/d all year
001Solids, total dissolvedMO AVG <= 725 mg/L all year
001Solids, total dissolvedDAILY MX <= 1088 mg/L all year
001Solids, total dissolvedMO AVG <= 2612 lb/d all year
001Solids, total dissolvedDAILY MX <= 3918.1 lb/d 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