THE BLACK DIAMOND COMPANY

NPDES permit VAM081574 · Minor NON-POTW · administratively continued, expires 2021-09-26 · 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 2021-09-26 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 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
2302pHINST MIN >= 6 SU all year
2302pHINST MAX <= 9 SU all year
2302Solids, total suspendedDAILY MN report only all year
2302Solids, total suspendedMO AVG <= 35 mg/L all year
2302Solids, total suspendedDAILY MX <= 70 mg/L all year
2302Solids, settleableDAILY MN report only all year
2302Solids, settleableMO AVG report only all year
2302Solids, settleableDAILY MX report only all year
2302Iron, total [as Fe]DAILY MN report only all year
2302Iron, total [as Fe]MO AVG <= 3 mg/L all year
2302Iron, total [as Fe]DAILY MX <= 6 mg/L all year
2302Manganese, total [as Mn]DAILY MN report only all year
2302Manganese, total [as Mn]MO AVG <= 2 mg/L all year
2302Manganese, total [as Mn]DAILY MX <= 4 mg/L all year
2302Flow, in conduit or thru treatment plantMO AVG report only all year
2302Flow, in conduit or thru treatment plantDAILY MX report only all year
4532pHINST MIN >= 6 SU all year
4532pHINST MAX <= 9 SU all year
4532Solids, total suspendedDAILY MN report only all year
4532Solids, total suspendedMO AVG <= 35 mg/L all year
4532Solids, total suspendedDAILY MX <= 70 mg/L all year
4532Iron, total [as Fe]DAILY MN report only all year
4532Iron, total [as Fe]MO AVG <= 3 mg/L all year
4532Iron, total [as Fe]DAILY MX <= 6 mg/L all year
4532Manganese, total [as Mn]DAILY MN report only all year
4532Manganese, total [as Mn]MO AVG <= 2 mg/L all year
4532Manganese, total [as Mn]DAILY MX <= 4 mg/L all year
4532Flow, in conduit or thru treatment plantMO AVG report only all year
4532Flow, 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