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Clean Water Act discharge permit · NPDES PAM617003

HUMPHREY SONNTAG MINE, Slippery Rock, PA: NPDES PAM617003 discharge permit, effluent exceedances, inspections, penalties

HUMPHREY SONNTAG MINE, held by THREE RIVERS AGGREGATES LLC, holds NPDES permit PAM617003, which discharges to Slippery Rock Creek. EPA’s file records it issued June 28, 2021 and expiring March 27, 2026. 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.

What the register holds for HUMPHREY SONNTAG MINE: its NPDES ID, its permit type and status, its dates, its address in Slippery Rock, Pennsylvania, its receiving water, and 3 pollutants under a numeric limit. EPA’s effluent violation file and its single-event violation file hold no violation for NPDES PAM617003.

Identity

Facility as filedHUMPHREY SONNTAG MINE
Permittee as filedTHREE RIVERS AGGREGATES LLC
NPDES IDPAM617003
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
IssuedJune 28, 2021
Expiration dateMarch 27, 2026
Issuing agencyState Environmental Organization
AddressSlippery Rock, PA 16057
Receiving waterSlippery Rock Creek
SubwatershedTaylor Run-Slippery Rock Creek (HUC 050301050306)

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
pH600
Solids, total suspended100
Solids, settleable100

EPA’s effluent violation file records no exceedance of a numeric limit for NPDES PAM617003.

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 PAM617003.

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 PAM617003 there.

Nearby on the register

Figures from EPA’s ICIS-NPDES download, loaded September 15, 2026.

What this page shows

This public-records page covers Clean Water Act discharge permit NPDES PAM617003 for HUMPHREY SONNTAG MINE in Slippery Rock, Pennsylvania, held by THREE RIVERS AGGREGATES LLC and discharging to Slippery Rock Creek. The permit is listed as administratively continued, with 0 pollutants under a numeric limit showing an effluent exceedance and 3 pollutants under a numeric limit.