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Clean Water Act discharge permit · NPDES MAR1005C4

OPEN PLAY - 0 EAST MAIN STREET, HOPKINTON, Hopkinton, MA: NPDES MAR1005C4 discharge permit, effluent exceedances, inspections, penalties

OPEN PLAY - 0 EAST MAIN STREET, HOPKINTON, held by Open Play LLC, holds NPDES permit MAR1005C4. EPA’s file records it issued August 8, 2024 and expiring February 16, 2027.

OPEN PLAY - 0 EAST MAIN STREET, HOPKINTON, Hopkinton, Massachusetts: Coverage under a general permit MAR1005C4, held by Open Play LLC; Construction stormwater; Effective; issued August 8, 2024, term to February 16, 2027, by U.S. EPA.

Massachusetts holds 3,320 Construction stormwater coverages of this permit type in EPA’s file; 1,946 were issued before MAR1005C4.

Coverages issued nearest MAR1005C4

OPEN PLAY - 0 EAST MAIN STREET, HOPKINTON among its neighbors

EPA’s permit file holds 52 discharge permits in the Sudbury Reservoir-Sudbury River subwatershed (HUC 010700050102), MAR1005C4 among them.

Other permits in the Sudbury Reservoir-Sudbury River subwatershed (HUC 010700050102)

What the register holds for OPEN PLAY - 0 EAST MAIN STREET, HOPKINTON: its NPDES ID, its permit type and status, its dates, its address in Hopkinton, Massachusetts. EPA’s effluent violation file and its single-event violation file hold no violation for NPDES MAR1005C4.

Identity

Facility as filedOPEN PLAY - 0 EAST MAIN STREET, HOPKINTON
Permittee as filedOpen Play LLC
NPDES IDMAR1005C4
Permit statusEffective
Permit typeCoverage under a general permit
Discharger classMinor discharger
Facility typeNot a publicly owned treatment works
ProgramConstruction stormwater
IssuedAugust 8, 2024
Expiration dateFebruary 16, 2027
Issuing agencyU.S. EPA
AddressHopkinton, MA 01748
SubwatershedSudbury Reservoir-Sudbury River (HUC 010700050102)

Effluent limits and exceedances

EPA’s limits and effluent violation files hold no pollutant row for NPDES MAR1005C4.

Inspections, violations and enforcement

EPA’s single-event violation file, as loaded, holds no violation for NPDES MAR1005C4.

Inspections

EPA’s inspection file holds no inspection for NPDES MAR1005C4.

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 MAR1005C4.

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Nearby on the register

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

What this page shows

The OPEN PLAY - 0 EAST MAIN STREET, HOPKINTON permit is one of 26 storm water construction permits on EPA's NPDES register in Hopkinton, and it sits within a subwatershed that holds 52 NPDES permits in total. Of the 24 storm water construction permits in Hopkinton, 75.0% were issued earlier than this one, and the permit has no pollutants under a numeric limit and no effluent exceedances on file.