THE BLACK DIAMOND COMPANY

NPDES permit VAM081923 · Minor NON-POTW · administratively continued, expires 2024-09-16 · EPA's file as of 2026-09-19

Check this month's numbers before you file

This permit expired on 2024-09-16 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 10 forms filed late

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

Reporting

Reports are due about 10 days after each monitoring period ends (the most common figure among VA permits in EPA's filings — check your permit).

Limits in force (13)

OutfallParameterStatisticLimitMonths
5375pHINST MIN >= 6 SU all year
5375pHINST MAX <= 9 SU all year
5375Solids, total suspendedDAILY MN report only all year
5375Solids, total suspendedMO AVG <= 35 mg/L all year
5375Solids, total suspendedDAILY MX <= 70 mg/L all year
5375Iron, total [as Fe]DAILY MN report only all year
5375Iron, total [as Fe]MO AVG <= 3 mg/L all year
5375Iron, total [as Fe]DAILY MX <= 6 mg/L all year
5375Manganese, total [as Mn]DAILY MN report only all year
5375Manganese, total [as Mn]MO AVG <= 2 mg/L all year
5375Manganese, total [as Mn]DAILY MX <= 4 mg/L all year
5375Flow, in conduit or thru treatment plantMO AVG report only all year
5375Flow, in conduit or thru treatment plantDAILY 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