Metro Machine Corp.

NPDES permit VA0073091 · Minor NON-POTW · effective, expires 2030-06-30 · 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

3values over a limit
0required values missing, on 0 form(s)
0of 25 forms filed late

Last period with anything received: 2026-07-31. Most often over: Zinc, total recoverable (1), Copper, total recoverable (1), TU Static 48Hr Acute Americamysis bahia (formerly Mysidopsis bahia) (1).

Reporting

Reports are due about 10 days after each monitoring period ends (read off this permit's own late-day counts in EPA's filings).

Limits in force (32)

OutfallParameterStatisticLimitMonths
002pHMINIMUM >= 6 SU all year
002pHMAXIMUM <= 9 SU all year
002Solids, total suspendedMO AVG <= 30 mg/L all year
002Solids, total suspendedMAXIMUM <= 60 mg/L all year
002Zinc, total recoverableMAXIMUM <= 180 ug/L all year
002Copper, total recoverableMAXIMUM <= 32.6 ug/L all year
002Petrol hydrocarbons, total recoverableMO AVG <= 10 mg/L all year
002Petrol hydrocarbons, total recoverableMAXIMUM <= 15 mg/L all year
002Flow, in conduit or thru treatment plantMO AVG report only all year
002Flow, in conduit or thru treatment plantMAXIMUM report only all year
002TU Static 48Hr Acute Americamysis bahia (formerly Mysidopsis bahia)MAXIMUM <= 1 tox acute all year
007pHMINIMUM >= 6 SU all year
007pHMAXIMUM <= 9 SU all year
007Solids, total suspendedMAXIMUM report only all year
007Copper, dissolved [as Cu]MAXIMUM report only all year
007Zinc, dissolved [as Zn]MAXIMUM report only all year
007Zinc, total recoverableMAXIMUM report only all year
007Copper, total recoverableMAXIMUM report only all year
007Precipitation volumeET report only all year
011pHMINIMUM >= 6 SU all year
011pHMAXIMUM <= 9 SU all year
011Solids, total suspendedMAXIMUM report only all year
011Zinc, total recoverableMAXIMUM report only all year
011Copper, total recoverableMAXIMUM report only all year
011Precipitation volumeET report only all year
901pHMINIMUM >= 6 SU all year
901pHMAXIMUM <= 9 SU all year
901Solids, total suspendedMAXIMUM report only all year
901Zinc, total recoverableMAXIMUM report only all year
901Copper, total recoverableMAXIMUM report only all year
901Precipitation volumeET report only all year
901TU Static 48Hr Acute Americamysis bahia (formerly Mysidopsis bahia)MAXIMUM <= 1 tox acute 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