Clean Water Act discharge permit · NPDES GU0020362
GUAM SHIPYARD, Santa Rita, GU: NPDES GU0020362 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 16Pollutants under a numeric limit
- 0Pollutants with an effluent exceedance
GUAM SHIPYARD holds NPDES permit GU0020362. EPA’s file records it issued July 17, 2002 and expiring July 19, 2007. The status and dates are as EPA’s permit file stood when Velarion loaded it (September 15, 2026); EPA’s free Detailed Facility Report on ECHO carries the permit’s current standing.
Identity
| Facility as filed | GUAM SHIPYARD |
|---|---|
| Permittee as filed | GUAM SHIPYARD |
| NPDES ID | GU0020362 |
| Permit status | Administratively continued (past its expiration date and still in force until reissued) |
| Permit type | Individual permit |
| Discharger class | Minor discharger |
| Facility type | Federal facility |
| Issued | July 17, 2002 |
| Expiration date | July 19, 2007 |
| Address | Santa Rita, GU 95915 |
Cited to the EPA ICIS-NPDES permit file (ECHO download).
Effluent limits and exceedances
- 154Pollutants on file
- 16Under a numeric limit
- 154With a violation of any kind
- 0With 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; the 60 with the most exceedances of 154 are shown.
| Pollutant or measure | Limits | Violations, any kind | Effluent exceedances | Latest exceedance | Largest exceedance, as filed |
|---|---|---|---|---|---|
| pH | 22 | 1,384 | 0 | ||
| Flow, in conduit or thru treatment plant | 11 | 1,274 | 0 | ||
| Solids, total suspended | 22 | 1,190 | 0 | ||
| Oil and grease | 22 | 1,190 | 0 | ||
| Zinc, total recoverable | 20 | 986 | 0 | ||
| Lead, total recoverable | 20 | 986 | 0 | ||
| Copper, total recoverable | 20 | 986 | 0 | ||
| Tributyltin | 20 | 976 | 0 | ||
| Enterococci | 0 | 970 | 0 | ||
| Chromium, hexavalent [as Cr] | 10 | 876 | 0 | ||
| Toluene | 0 | 786 | 0 | ||
| Benzene | 0 | 786 | 0 | ||
| Ethylbenzene | 0 | 786 | 0 | ||
| Temperature, water deg. centigrade | 11 | 692 | 0 | ||
| Turbidity | 11 | 595 | 0 | ||
| Nitrogen, nitrate total [as NO3] | 11 | 595 | 0 | ||
| Polychlorinated biphenyls [PCBs] | 0 | 504 | 0 | ||
| Phosphate, ortho [as PO4] | 9 | 478 | 0 | ||
| Coliform, fecal, colony forming units | 22 | 220 | 0 | ||
| Pass/Fail Static Renewal 96Hr Acute Holmesimysis costata | 0 | 194 | 0 | ||
| Pass/Fail Static Renewal 96Hr Acute Americamysis bahia (formerly Mysidopsis bahia) | 0 | 194 | 0 | ||
| Pass/Fail Static Renewal 96Hr Acute Cyprinodon variegatus | 0 | 194 | 0 | ||
| Pass/Fail Static Renewal 96Hr Acute Menidia beryllina | 0 | 194 | 0 | ||
| Pass/Fail Static Renewal 96Hr Acute Atherinops affinis | 0 | 194 | 0 | ||
| Nitrogen, total [as N] | 2 | 117 | 0 | ||
| TU Static 20Min Chronic Strongyl. purpuratus | 10 | 10 | 0 | ||
| Cyanide, total [as CN] | 0 | 10 | 0 | ||
| Arsenic, total recoverable | 0 | 10 | 0 | ||
| Selenium, total recoverable | 0 | 10 | 0 | ||
| Thallium, total recoverable | 0 | 10 | 0 | ||
| Beryllium, total recoverable [as Be] | 0 | 10 | 0 | ||
| Arsenic, dissolved [as As] | 0 | 10 | 0 | ||
| Cadmium, dissolved [as Cd] | 0 | 10 | 0 | ||
| Copper, dissolved [as Cu] | 0 | 10 | 0 | ||
| Lead, dissolved [as Pb] | 0 | 10 | 0 | ||
| Nickel, dissolved [as Ni] | 0 | 10 | 0 | ||
| Nickel, total recoverable | 0 | 10 | 0 | ||
| Silver, total [as Ag] | 0 | 10 | 0 | ||
| Silver total recoverable | 0 | 10 | 0 | ||
| Zinc, dissolved [as Zn] | 0 | 10 | 0 | ||
| Cadmium, total recoverable | 0 | 10 | 0 | ||
| Chromium, total recoverable | 0 | 10 | 0 | ||
| Chromium, hexavalent dissolved [as Cr] | 0 | 10 | 0 | ||
| Antimony, total recoverable | 0 | 10 | 0 | ||
| 2-Methyl-4,6-dinitrophenol | 0 | 10 | 0 | ||
| Dichlorobromomethane | 0 | 10 | 0 | ||
| Carbon tetrachloride | 0 | 10 | 0 | ||
| 1,2-Dichloroethane | 0 | 10 | 0 | ||
| Bromoform | 0 | 10 | 0 | ||
| Dibromochloromethane | 0 | 10 | 0 | ||
| Chloroform | 0 | 10 | 0 | ||
| .delta.-BHC | 0 | 10 | 0 | ||
| Acenaphthylene | 0 | 10 | 0 | ||
| Acenaphthene | 0 | 10 | 0 | ||
| Acrolein | 0 | 10 | 0 | ||
| Acrylonitrile | 0 | 10 | 0 | ||
| Anthracene | 0 | 10 | 0 | ||
| Benzo[b]fluoranthene | 0 | 10 | 0 | ||
| Benzo[k]fluoranthene | 0 | 10 | 0 | ||
| Benzo[a]pyrene | 0 | 10 | 0 |
EPA’s effluent violation file records no exceedance of a numeric limit for NPDES GU0020362.
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 GU0020362.
Velarion’s copy of EPA’s ICIS-NPDES files does not 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.
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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 GU0020362 there.
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Figures from EPA’s ICIS-NPDES download, loaded September 15, 2026.