ALDEN RESEARCH LABORATORY INC

NPDES permit MA0028801 · Minor NON-POTW · administratively continued, expires 2018-07-31 · 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 2018-07-31 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 60 forms filed late

Last period with anything received: 2026-08-31.

Reporting

Reports are due about 15 days after each monitoring period ends (the most common figure among MA permits in EPA's filings — check your permit).

Limits in force (40)

OutfallParameterStatisticLimitMonths
001Temperature, water deg. fahrenheitDAILY MX report only all year
001ColorDAILY MX report only all year
001pHMINIMUM >= 6.5 SU all year
001pHMAXIMUM <= 8.3 SU all year
001Copper, total [as Cu]DAILY MX <= 7.3 ug/L all year
001Chlorine, total residualDAILY MX <= 41.1 ug/L all year
001Rhodamine WT dyeMO AVG report only all year
001Rhodamine WT dyeDAILY MX <= 10 ug/L all year
002Temperature, water deg. fahrenheitDAILY MX report only all year
002ColorDAILY MX report only all year
002pHMINIMUM >= 6.5 SU all year
002pHMAXIMUM <= 8.3 SU all year
002Copper, total recoverableDAILY MX <= 7.3 ug/L all year
002Chlorine, total residualDAILY MX <= 41.1 ug/L all year
002Rhodamine WT dyeMO AVG report only all year
002Rhodamine WT dyeDAILY MX <= 10 ug/L all year
003Temperature, water deg. fahrenheitDAILY MX report only all year
003Oxygen, dissolved [DO]MINIMUM >= 6 mg/L all year
003BOD, 5-day, 20 deg. CDAILY MX report only all year
003pHMINIMUM >= 6.5 SU all year
003pHMAXIMUM <= 8.3 SU all year
003Solids, total suspendedDAILY MX report only all year
003Nitrogen, total [as N]DAILY MX report only all year
003Phosphorus, total [as P]DAILY MX report only all year
003Copper, total recoverableDAILY MX <= 7.3 ug/L all year
003Chlorine, total residualDAILY MX <= 41.1 ug/L all year
003Specific ConductanceDAILY MX <= 250 umho/sec all year
004Temperature, water deg. fahrenheitDAILY MX report only all year
004Oxygen, dissolved [DO]MINIMUM >= 6 mg/L all year
004BOD, 5-day, 20 deg. CDAILY MX report only all year
004pHMINIMUM >= 6.5 SU all year
004pHMAXIMUM <= 8.3 SU all year
004Solids, total suspendedDAILY MX report only all year
004Nitrogen, total [as N]DAILY MX report only all year
004Phosphorus, total [as P]DAILY MX report only all year
004Copper, total recoverableDAILY MX <= 7.3 ug/L all year
004Chlorine, total residualDAILY MX <= 41.1 ug/L all year
004Specific ConductanceDAILY MX <= 250 umho/sec all year
SUMFlow, in conduit or thru treatment plantMO AVG <= 100000 gal/d all year
SUMFlow, 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