THE BLACK DIAMOND COMPANY

NPDES permit VAM081630 · Minor NON-POTW · effective, expires 2028-02-25 · 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
12required values missing, on 4 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 (19)

OutfallParameterStatisticLimitMonths
2844pHINST MIN >= 6 SU all year
2844pHINST MAX <= 9 SU all year
2844Solids, total suspendedDAILY MN report only all year
2844Solids, total suspendedMO AVG <= 35 mg/L all year
2844Solids, total suspendedDAILY MX <= 70 mg/L all year
2844Iron, total [as Fe]DAILY MN report only all year
2844Iron, total [as Fe]MO AVG <= 3 mg/L all year
2844Iron, total [as Fe]DAILY MX <= 6 mg/L all year
2844Manganese, total [as Mn]DAILY MN report only all year
2844Manganese, total [as Mn]MO AVG <= 2 mg/L all year
2844Manganese, total [as Mn]DAILY MX <= 4 mg/L all year
2844Aluminum, total [as Al]DAILY MN report only all year
2844Aluminum, total [as Al]MO AVG report only all year
2844Aluminum, total [as Al]DAILY MX report only all year
2844Flow, in conduit or thru treatment plantMO AVG report only all year
2844Flow, in conduit or thru treatment plantDAILY MX report only all year
2844Solids, total dissolved [TDS]DAILY MN report only all year
2844Solids, total dissolved [TDS]MO AVG report only all year
2844Solids, total dissolved [TDS]DAILY 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