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Clean Water Act discharge permit · NPDES PAR218327

MERCER LIME COMPANY, Slippery Rock, PA: NPDES PAR218327 discharge permit, effluent exceedances, inspections, penalties

MERCER LIME COMPANY holds NPDES permit PAR218327, which discharges to Mcdonald Run. EPA’s file records it issued September 24, 2016 and expiring September 23, 2022.

MERCER LIME COMPANY, Slippery Rock, Pennsylvania: Coverage under a general permit PAR218327; Administratively continued (past its expiration date and still in force until reissued); issued September 24, 2016, term to September 23, 2022, by State Environmental Organization; discharges to McDonald Run.

  • pH: 2 limits, 12 violations of any kind, 0 effluent exceedances.
  • Solids, total suspended: 2 limits, 12 violations of any kind, 0 effluent exceedances.
  • Iron, total [as Fe]: 2 limits, 12 violations of any kind, 0 effluent exceedances.
  • Aluminum, total [as Al]: 2 limits, 12 violations of any kind, 0 effluent exceedances.
  • August 3, 2021: Permit Violations - Failure to Pay Fees (ST6).
  • September 17, 2020: Reporting Violations - Failure to Notify (ST6).

MERCER LIME COMPANY among its neighbors

EPA’s permit file holds 37 discharge permits in the Hogue Run-Slippery Rock Creek subwatershed (HUC 050301050305), PAR218327 among them. Its county holds 310, 0 of them major permits; PAR218327 is a minor permit.

Other permits in the Hogue Run-Slippery Rock Creek subwatershed (HUC 050301050305)

  • 105 MOHAWK TRAIL SRSTP, Slippery Rock: PA0291269, minor permit, discharging to Slippery Rock Creek, permit term to January 31, 2028
  • 128 HICKORY HILLS LN SRSTP, Slippery Rock: PAG041543, minor permit, discharging to Big Run, permit term to November 11, 2028
  • 151 ETNA ROAD SRSTP, Slippery Rock: PAG041399, minor permit, discharging to Slippery Rock Creek, permit term to November 11, 2028
  • 223 COVERT RD SRSTP, Slippery Rock: PAG041594, minor permit, discharging to UNT To Big Run, permit term to November 11, 2028
  • 247 CREEK DR SRSTP, Slippery Rock: PAG041597, minor permit, discharging to Slippery Rock Creek, permit term to November 11, 2028
  • 343 CREEK DR SRSTP, Slippery Rock: PAG041542, minor permit, discharging to Slippery Rock Creek, permit term to November 11, 2028
  • 491 BRANCHTON RD SRSTP, Slippery Rock: PAG041499, minor permit, discharging to McDonald Run, permit term to November 11, 2028
  • 514 SLIPPERY ROCK RD SRSTP, Slippery Rock: PAG041283, minor permit, discharging to UNT Of Slippery Rock Creek, permit term to November 11, 2028
  • 712 NEW CASTLE RD SRSTP, Slippery Rock: PA0291226, minor permit, discharging to UNT To Slippery Rock Creek, permit term to November 30, 2027
  • ALLEGHENY MINERAL 24 MINE, Slippery Rock: PA0242250, minor permit, discharging to UNT To Slippery Rock Creek, permit term to December 15, 2021

Identity

Facility as filedMERCER LIME COMPANY
Permittee as filedMERCER LIME COMPANY
NPDES IDPAR218327
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
IssuedSeptember 24, 2016
Expiration dateSeptember 23, 2022
Issuing agencyState Environmental Organization
AddressSlippery Rock, PA 16057
Receiving waterMcDonald Run
SubwatershedHogue Run-Slippery Rock Creek (HUC 050301050305)
SIC3274 – Lime

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
pH2120
Solids, total suspended2120
Iron, total [as Fe]2120
Aluminum, total [as Al]2120

EPA’s effluent violation file records no exceedance of a numeric limit for NPDES PAR218327.

Inspections, violations and enforcement

DateWhat EPA recordedAgency
August 3, 2021Permit Violations - Failure to Pay FeesST6
September 17, 2020Reporting Violations - Failure to NotifyST6

Inspections

EPA’s inspection file holds no inspection for NPDES PAR218327.

Formal enforcement and penalties

0 formal actions, 0 of them with a penalty assessed. Federal and state penalties are separate figures from separate authorities and are shown as each was filed, never added together.

Informal enforcement

EPA’s informal enforcement file holds no action for NPDES PAR218327.

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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 PAR218327 held by MERCER LIME COMPANY of Slippery Rock, PA, which discharges to McDonald Run within the Hogue Run-Slippery Rock Creek subwatershed (HUC 050301050305). The permit is listed as administratively continued, with a Minor discharger class of 4, 0 pollutants under a numeric limit, and 0 pollutants with an effluent exceedance.