THE BLACK DIAMOND COMPANY

NPDES permit VAM082170 · Minor NON-POTW · effective, expires 2026-12-08 · 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 20 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 (29)

OutfallParameterStatisticLimitMonths
1128pHINST MIN >= 6 SU all year
1128pHINST MAX <= 9 SU all year
1128Solids, total suspendedDAILY MN report only all year
1128Solids, total suspendedMO AVG <= 35 mg/L all year
1128Solids, total suspendedDAILY MX <= 70 mg/L all year
1128Iron, total [as Fe]DAILY MN report only all year
1128Iron, total [as Fe]MO AVG <= 3 mg/L all year
1128Iron, total [as Fe]DAILY MX <= 6 mg/L all year
1128Manganese, total [as Mn]DAILY MN report only all year
1128Manganese, total [as Mn]MO AVG <= 2 mg/L all year
1128Manganese, total [as Mn]DAILY MX <= 4 mg/L all year
1128Flow, in conduit or thru treatment plantMO AVG report only all year
1128Flow, in conduit or thru treatment plantDAILY MX report only all year
1128Solids, total dissolved [TDS]DAILY MN report only all year
1128Solids, total dissolved [TDS]MO AVG report only all year
1128Solids, total dissolved [TDS]DAILY MX report only all year
2881pHINST MIN >= 6 SU all year
2881pHINST MAX <= 9 SU all year
2881Solids, total suspendedDAILY MN report only all year
2881Solids, total suspendedMO AVG <= 35 mg/L all year
2881Solids, total suspendedDAILY MX <= 70 mg/L all year
2881Iron, total [as Fe]DAILY MN report only all year
2881Iron, total [as Fe]MO AVG <= 3 mg/L all year
2881Iron, total [as Fe]DAILY MX <= 6 mg/L all year
2881Manganese, total [as Mn]DAILY MN report only all year
2881Manganese, total [as Mn]MO AVG <= 2 mg/L all year
2881Manganese, total [as Mn]DAILY MX <= 4 mg/L all year
2881Flow, in conduit or thru treatment plantMO AVG report only all year
2881Flow, 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