EPA Air · by county
Air-emissions sources in Middlesex County, Massachusetts
- 932Facilities
Every stationary source in Middlesex County, Massachusetts that holds a Clean Air Act permit or is otherwise tracked by an air agency — planned, under construction, operating, seasonal or temporarily closed. Sources EPA records as permanently closed are not listed.
By emissions classification in Middlesex County
A source’s classification is the size band its potential emissions put it in: a major source is large enough to need a Title V operating permit, a synthetic minor has accepted limits to stay below that line, and a minor source sits below it outright.
Inspections in Middlesex County, by year
A compliance evaluation is the on-site or file review a state, local or federal air agency records against a permitted source.
- 2026 — inspections 124
- 2025 — inspections 190
- 2024 — inspections 185
- 2023 — inspections 106
- 2022 — inspections 63
- 2021 — inspections 100
- 2020 — inspections 103
- 2019 — inspections 132
- 2018 — inspections 127
- 2017 — inspections 169
Facilities
| Facility↑↓ | Classification↑↓ | HPV |
|---|---|---|
| PORTLAND STONEWARE | Minor source | No |
| POSCO INCORPORATED | Synthetic minor source | No |
| POWER PRODUCTS SYSTEMS LLC | No | |
| PP MANUFACTURING CORP | No | |
| PRECISION COATING CO | Synthetic minor source | Yes |
| PRECISION MACHINISTS | Minor source | No |
| PREFERRED FREEZER SERVICES | Minor source | No |
| PRIDE PRINTERS INCORPORATED | Minor source | No |
| PROLERIZED NE COMPANY | Synthetic minor source | Yes |
| PURE ENCAPSULATIONS LLC | No | |
| PURECOAT NORTH LLC | Synthetic minor source | No |
| PUTNAM GARDENS | Minor source | No |
| QSA GLOBAL INC | No | |
| QUAD GRAPHICS | Minor source | No |
| QUALITY METAL FINISHING (AKA SUDBURY BRA | Minor source | No |
| QUEST DIAGNOSTICS | Minor source | No |
| QUEST DIAGNOSTICS INCORPORATED | Minor source | No |
| QUINN PERKINS SAND | Minor source | No |
| RADANT TECHNOLOGIES | Minor source | No |
| RAPID MICRO BIOSYSTEMS | No | |
| RAYTHEON COMPANY - TEWKSBURY | Synthetic minor source | No |
| RAYTHEON ELECTRONIC | Minor source | No |
| RAYTHEON SYSTEMS | Minor source | No |
| RAYTHEON SYSTEMS CO | Minor source | No |
| RB KENDALL FEE LLC | Minor source | No |
| READING HIGH SCHOOL | Minor source | No |
| RED MILL GRAPHICS | Minor source | Yes |
| REEBOK WORLD HEADQUARTERS | Synthetic minor source | No |
| REGIS COLLEGE | Synthetic minor source | Yes |
| REILLY SCHOOL | Minor source | No |
| REILY FOODS COMPANY | Synthetic minor source | No |
| RELIANCE PRINTING CO | Minor source | No |
| REPLIGEN CORPORATION | Minor source | No |
| REPLIMUNE INC | Yes | |
| RESIN DESIGNS | Minor source | Yes |
| REX LUMBER | Minor source | No |
| RICH PRODUCTS CORPORATION | Minor source | No |
| RINCHEM COMPANY | No | |
| RITE WAY CLEANERS | Minor source | No |
| RIVERSIDE CLEANERS | Minor source | No |
| RIVINIUS & SONS INCORPORATED | Minor source | No |
| RK WING CORP D/B/A ROSSINI'S PIZZERIA & RESTAURANT | Minor source | No |
| ROBERT ADAMS SCHOOL | Minor source | No |
| ROBINSON MIDDLE SCHOOL | Minor source | No |
| ROBINSON SUPPLY COMPANY | Minor source | No |
| ROBT W HEALEY PUBLIC SAFETY BLDG | Minor source | No |
| ROCHE BROTHERS BARREL & DRUM CO. | Synthetic minor source | No |
| ROGERS FOAM COMPANY | Minor source | No |
| ROGERS SCHOOL | Minor source | No |
| ROHM & HAAS ADVANCED MATERIALS | Minor source | No |
| ROHM AND HAAS ELECTRONIC MATERIALS LLC | Synthetic minor source | No |
| ROHTSTEIN CORPORATION | Minor source | No |
| ROOSEVELT TOWERS | Minor source | No |
| ROSENFELD CONCRETE CORP | Minor source | No |
| ROYAL ENVIRONMENTAL | Minor source | No |
| ROYAL HOSPITALITY SERVICES INC | Minor source | No |
| RSA | Minor source | No |
| RUDOLPH TECHNOLOGIES | No | |
| RWE SCHOOT SOLAR INC | Minor source | No |
| SAFETY KLEEN CORPORATION | Synthetic minor source | No |
| SAMTAN ENGINEERING | Minor source | No |
| SANA BIOTECHNOLOGY | No | |
| SANCTA MARIA NURSING FACILITY | Minor source | No |
| SANCTUARY MEDICINALS INC | Minor source | Yes |
| SANMINA - SCI CORP | Minor source | No |
| SANOFI | No | |
| SANOFI | No | |
| SARTORIUS STEDIM NORTH AMERICA INC | No | |
| SATHORN CORPORATION | Minor source | No |
| SAXONVILLE REALTY TRUST | Minor source | No |
| SBGI CORP | Minor source | No |
| SCHLEIFRING NORTH AMERICA | No | |
| SCHLUMBERGER TECHNOLOGY CORPORATION | Minor source | No |
| SCHNITZER NORTHEAST | Minor source | No |
| SCHOTT CML FIBEROPTICS | Minor source | No |
| SCRAP IT, INC | Minor source | No |
| SCREENPRINT DOW INC | Minor source | Yes |
| SCULLY SIGNAL COMPANY | Minor source | No |
| SEARS 1163 | Minor source | No |
| SECOND STREET IRON & METAL CO., INC. | Minor source | No |
| SETRA SYSTEMS INCORPORATED | Minor source | No |
| SHANKLIN CORPORATION | Minor source | No |
| SHAWSHEEN V SCHOOL | Minor source | No |
| SHEA CONCRETE PRODUCTS INCORPORATED | Synthetic minor source | No |
| SHEAUMANN LASER INC | Minor source | No |
| SHERATON COMMANDER | Minor source | No |
| SHERWIN WILLIAMS 5267 | Synthetic minor source | No |
| SHIRE | Minor source | No |
| SHIRE HUMAN GENETIC THERAPIES INC | Synthetic minor source | Yes |
| SHIRE HUMAN GENETICS THERAPIES | Synthetic minor source | No |
| SHIRE PHARMACEUTICALS | Minor source | No |
| SIGMA ALDRICH RESEARCH BIOCHEMICALS INC | Minor source | No |
| SIKA SARNAFIL | Minor source | No |
| SIKA SARNAFIL | Minor source | No |
| SIPEX CORPORATION | Minor source | No |
| SJB BAGEL MAKERS DBA FINAGLE | Minor source | No |
| SKYWORKS SOLUTIONS INC | Synthetic minor source | No |
| SMC LTD | No | |
| SNAPDRAGON CHEMISTRY INC | No | |
| SOLOMON MENTAL HEALTH CENTER | Minor source | No |
County as filed on the facility record. Figures from EPA’s ICIS-AIR download.