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NPDES MDG499914 · Clean Water Act

POTTS & CALLAHAN INC, Baltimore, MD: NPDES MDG499914 discharge permit, effluent exceedances, inspections, penalties

POTTS & CALLAHAN INC, Baltimore, Maryland: General permit coverage MDG499914; Administratively continued; issued April 1, 2016, term to April 1, 2016, by MARYLAND DEPARTMENT OF THE ENVIORMENT.

  • pH: 2 limits, 438 violations of any kind.
  • Solids, total suspended: 2 limits, 278 violations of any kind.
  • Flow, in conduit or thru treatment plant: 2 limits, 246 violations of any kind.
  • pH change [range]: 2 limits, 54 violations of any kind.
  • Temp. difference, summer [deg. F]: 0 limits, 32 violations of any kind.
  • Temperature, summer [deg. F]: 0 limits, 32 violations of any kind.
  • Temperature, water deg. fahrenheit: 1 limit, 9 violations of any kind.

POTTS & CALLAHAN INC among its neighbors

43 discharge permits are in the Dead Run-Gywnns Falls subwatershed (HUC 020600030902); MDG499914 is one. Its county: 131, 3 major; MDG499914 is minor permit.

Other permits in the Dead Run-Gywnns Falls subwatershed (HUC 020600030902)

Identity

FacilityPOTTS & CALLAHAN INC
PermitteePOTTS & CALLAHAN INC
NPDES IDMDG499914
StatusAdministratively continued
TypeGeneral permit coverage
ClassMinor
Facility typeNon-POTW
IssuedApril 1, 2016
ExpiresApril 1, 2016
AgencyMARYLAND DEPARTMENT OF THE ENVIORMENT
AddressBaltimore, MD 21229
Receiving water impaired303(D) Listed
SubwatershedDead Run-Gywnns Falls (HUC 020600030902)

NPDES MDG499914: effluent limits and exceedances

POTTS & CALLAHAN INC (NPDES MDG499914): 7 pollutants on file, 5 limited; 7 with a violation of any kind, 0 with an exceedance.

How exceedances are counted.

PollutantLimitsViolationsExceedancesLatestLargest, as filed
pH24380
Solids, total suspended22780
Flow, in conduit or thru treatment plant22460
pH change [range]2540
Temp. difference, summer [deg. F]0320
Temperature, summer [deg. F]0320
Temperature, water deg. fahrenheit190

NPDES MDG499914: inspections, violations and enforcement

NPDES MDG499914 (POTTS & CALLAHAN INC): no single-event violation, inspection, formal enforcement action and informal enforcement action on file.

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Permits near NPDES MDG499914

NPDES MDG499914: 7 pollutant rows, 0 dated events; ICIS-NPDES download, loaded September 15, 2026.