Clean Water Act discharge permit · NPDES MS0002020
GCP LABORATORIES INC, Gulfport, MS: NPDES MS0002020 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 11Pollutants under a numeric limit
- 5Pollutants with an effluent exceedance
GCP LABORATORIES INC, held by GCP LABORATORIES, holds NPDES permit MS0002020, which discharges to Brickyard Bayou. EPA’s file records it issued November 27, 2017 and expiring October 31, 2022. The status and dates are as EPA’s permit file stood when Velarion loaded it (September 14, 2026); EPA’s free Detailed Facility Report on ECHO carries the permit’s current standing.
Identity
| Facility as filed | GCP LABORATORIES INC |
|---|---|
| Permittee as filed | GCP LABORATORIES |
| NPDES ID | MS0002020 |
| Permit status | Administratively continued (past its expiration date and still in force until reissued) |
| Permit type | Individual permit |
| Discharger class | Minor discharger |
| Facility type | Not a publicly owned treatment works |
| Issued | November 27, 2017 |
| Expiration date | October 31, 2022 |
| Issuing agency | MDEQ |
| Address | Gulfport, MS 39501 |
| Receiving water | BRICKYARD BAYOU |
| Subwatershed | Bernard Bayou-Big Lake (HUC 031700090602) |
Cited to the EPA ICIS-NPDES permit file (ECHO download).
Effluent limits and exceedances
- 11Pollutants on file
- 11Under a numeric limit
- 11With a violation of any kind
- 5With an effluent exceedance
An effluent exceedance is a discharge monitoring report value over the permit’s numeric limit (EPA’s violation code E90). A violation of any kind also counts a report not filed. Each row is EPA’s own count for that pollutant.
| Pollutant or measure | Limits | Violations, any kind | Effluent exceedances | Latest exceedance | Largest exceedance, as filed |
|---|---|---|---|---|---|
| Copper, total recoverable | 4 | 220 | 20 | June 30, 2019 | 962% over the limit |
| BOD, 5-day, 20 deg. C | 4 | 226 | 14 | June 30, 2009 | 1,120% over the limit |
| Chemical Oxygen Demand [COD] | 4 | 223 | 3 | February 28, 2009 | 37% over the limit |
| pH | 2 | 112 | 2 | October 31, 2008 | |
| Temperature, water deg. fahrenheit | 1 | 57 | 1 | April 30, 2007 | 3% over the limit |
| Sulfate [as S] | 4 | 224 | 0 | ||
| Solids, total suspended | 4 | 224 | 0 | ||
| Flow, in conduit or thru treatment plant | 2 | 69 | 0 | ||
| Oxygen, dissolved [DO] | 1 | 56 | 0 | ||
| % Effect Static Renewal 7 Day Chronic Americamysis bahia (formerly Mysidopsis bahia) | 1 | 1 | 0 | ||
| %Effect Static Renewal 7Day Chronic Menidia | 1 | 1 | 0 |
Cited to the EPA ICIS-NPDES limits and effluent violations files (ECHO download); up to 60 rows shown, most exceedances first.
Inspections, violations and enforcement
- 0Single-event violations
EPA’s single-event violation file, as loaded, holds no violation for NPDES MS0002020.
Velarion’s copy of EPA’s ICIS-NPDES files does not yet include the inspections, formal enforcement actions and informal enforcement actions files, so this page shows none of them. EPA’s free Detailed Facility Report on ECHO lists this permit’s inspections, enforcement actions and penalties.
Cited to the EPA ICIS-NPDES violation, inspection and enforcement files (ECHO download); up to 50 rows of each shown, newest first.
Watch this permit
One permit holder, $99/month. Watch the register for one permit holder and the places and receiving waters tied to its permits. Choose “One permit holder” and enter this permit’s NPDES ID, MS0002020.
Start the watch
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- One watershed — $2,990/year
- One state — $4,990/year
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EPA publishes a free Detailed Facility Report for every permit on ECHO: its compliance status quarter by quarter, its inspections, and its enforcement actions and penalties. EPA also sends free notices of new inspections and enforcement actions through ECHO Notify; enter NPDES ID MS0002020 there.
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- Every permit record in Mississippi, A to Z
Figures from EPA’s ICIS-NPDES download, loaded September 14, 2026.