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Clean Water Act discharge permit · NPDES MAR053765

SOLENIS LLC, Chicopee, MA: NPDES MAR053765 discharge permit, effluent exceedances, inspections, penalties

SOLENIS LLC, held by Solenis, LLC, holds NPDES permit MAR053765. EPA’s file records it issued December 23, 2015 and expiring June 3, 2020. 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 filedSOLENIS LLC
Permittee as filedSolenis, LLC
NPDES IDMAR053765
Permit statusAdministratively continued (past its expiration date and still in force until reissued)
Permit typeCoverage under a general permit
Discharger classMinor discharger
Facility typeNot a publicly owned treatment works
ProgramIndustrial stormwater
IssuedDecember 23, 2015
Expiration dateJune 3, 2020
Issuing agencyU.S. EPA
AddressChicopee, MA 01013
SubwatershedOutlet Chicopee River (HUC 010802040402)

Cited to the EPA ICIS-NPDES permit file (ECHO download).

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
Zinc, total [as Zn]1130
E. coli140
Temperature, water deg. centigrade130
Solids, total suspended130
Copper, total [as Cu]120
Polychlorinated biphenyls [PCBs]120
Zinc, total recoverable010

EPA’s effluent violation file records no exceedance of a numeric limit for NPDES MAR053765.

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

EPA’s single-event violation file, as loaded, holds no violation for NPDES MAR053765.

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.

Watch this permit

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How we handle your data → Privacy

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 MAR053765 there.

Nearby on the register

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