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Clean Water Act discharge permit · NPDES FL0002518

ST MARKS POWDER INC, Saint Marks, FL: NPDES FL0002518 discharge permit, effluent exceedances, inspections, penalties

ST MARKS POWDER INC, held by St. Marks Powder, Inc., holds NPDES permit FL0002518, which discharges to Big Boggy Branch Class Iii Fresh Wbid 1124. EPA’s file records it issued February 27, 2015 and expiring February 26, 2020. The status and dates are as EPA’s permit file stood when Velarion loaded it (October 14, 2026); EPA’s free Detailed Facility Report on ECHO carries the permit’s current standing.

Identity

Facility as filedST MARKS POWDER INC
Permittee as filedSt. Marks Powder, Inc.
NPDES IDFL0002518
Permit statusAdministratively continued (past its expiration date and still in force until reissued)
Permit typeIndividual permit
Discharger classMajor discharger
Facility typeNot a publicly owned treatment works
IssuedFebruary 27, 2015
Expiration dateFebruary 26, 2020
Issuing agencyFlorida Department of Environmental Protection
AddressSaint Marks, FL 32327
Receiving waterBig Boggy Branch Class III Fresh WBID 1124
Receiving water impaired303(D) Listed
SubwatershedWakulla River (HUC 031200011001)
NAICS325920 – Explosives Manufacturing
SIC2892 – Explosives
Other EPA IDs (FRS)RCRA handler FLD047096524

Cited to the EPA ICIS-NPDES permit file (ECHO download) and EPA’s NAICS/SIC and component files, the same download; cross-program IDs from EPA’s FRS facility-registry crosswalk.

Effluent limits and exceedances

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 measureLimitsViolations, any kindEffluent exceedancesLatest exceedanceLargest exceedance, as filed
Nitrogen, total [as N]10165October 31, 201838% over the limit
Coliform, fecal general243March 31, 20261,125% over the limit
Phosphorus, total [as P]7102November 30, 201650% over the limit
IC25 Static Renewal 7 Day Chronic Ceriodaphnia dubia351March 31, 201968% over the limit
LC50 Static Renewal 96Hr Acute Ceriodaphnia dubia031January 31, 201235% over the limit
Chlorine, total residual221April 30, 202450% over the limit
Chromium, hexavalent tot recoverable021May 31, 2006127% over the limit
Oil & Grease011February 28, 200792% over the limit
E. coli011December 31, 2024388% over the limit
Nitrogen, Kjeldahl, total [as N]360
Nitrite + Nitrate total [as N]360
Solids, total suspended440
BOD, carbonaceous [5 day, 20 C]440
IC25 Static Renewal 7 Day Chronic Chrpimephales340
Chemical Oxygen Demand [COD]330
Nickel, total recoverable030
Zinc, total recoverable030
Lead, total recoverable030
Chromium, trivalent total recoverable030
pH420
Flow, in conduit or thru treatment plant420
Oxygen, dissolved [DO]020
LC50 Static Renewal 96Hr Acute Cyprinella leedsi020
NOEL Static Renewal 7Day Chronic Ceriodaphnia dubia020
Noel Statre 7Day Chronic Pimephales020
Temperature, water deg. fahrenheit210
Nitrogen, ammonia total [as N]110
Nitrogen, ammonia, tot unionized [as N]010
Hardness, total [as CaCO3]010
Oxygen, dissolved percent saturation200
N-Nitrosodiphenylamine200
Diphenylamine200
Ammonia, unionized100

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

DateWhat EPA recordedAgency
December 10, 2025Management Practice Violations - Improper Land Application (non-503 non-CAFO)ST6
July 2, 2021WW SSO - Overflow to Dry Land or Building BackupST6
June 2, 2021WW SSO - Overflow to Dry Land or Building BackupST6
December 11, 2020WW SSO - Overflow to Dry Land or Building BackupST6
October 29, 2020WW SSO - Overflow to Dry Land or Building BackupST6
October 12, 2020WW SSO - Overflow to Dry Land or Building BackupST6

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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Nearby on the register

Figures from EPA’s ICIS-NPDES download, loaded October 14, 2026.

What this page shows

This public-records page covers NPDES permit FL0002518, held by St. Marks Powder, Inc. for its Saint Marks, FL facility, which discharges to Big Boggy Branch (Class III Fresh, WBID 1124). The permit is listed as administratively continued, with 19 pollutants under a numeric limit and 9 pollutants with an effluent exceedance.