EPA Air · stack tests by state, industry and year

Chemical manufacturing (NAICS 3251): stack tests in Indiana, 2026

90Stack tests

A stack test measures what a source actually emits, at the stack, against the limit in its permit. Each row is one stack test recorded during 2026 at a Indiana source whose primary industry code is NAICS 3251. A facility filing more than one industry code is counted under the first one on its record.

Chemical manufacturing (NAICS 3251) in Indiana, other years

Other industries in Indiana, 2026

Air-emissions stack tests recorded in Indiana, 2026

Date	Facility	Where	Kind	Agency
2026-07-24	GREEN PLAINS MOUNT VERNON LLC — high-priority violation on file	MOUNT VERNON, Posey, IN	Pass	State
2026-07-24	GREEN PLAINS MOUNT VERNON LLC — high-priority violation on file	MOUNT VERNON, Posey, IN	Pass	State
2026-07-24	GREEN PLAINS MOUNT VERNON LLC — high-priority violation on file	MOUNT VERNON, Posey, IN	Pass	State
2026-07-23	VALERO RENEWABLE FUELS CO LLC DBA VALERO MT VERNON PLANT — high-priority violation on file	MOUNT VERNON, Posey, IN	Pass	State
2026-07-23	VALERO RENEWABLE FUELS CO LLC DBA VALERO MT VERNON PLANT — high-priority violation on file	MOUNT VERNON, Posey, IN	Pass	State
2026-07-23	VALERO RENEWABLE FUELS CO LLC DBA VALERO MT VERNON PLANT — high-priority violation on file	MOUNT VERNON, Posey, IN	Pass	State
2026-07-23	VALERO RENEWABLE FUELS CO LLC DBA VALERO MT VERNON PLANT — high-priority violation on file	MOUNT VERNON, Posey, IN	Pass	State
2026-07-22	GREEN PLAINS MOUNT VERNON LLC — high-priority violation on file	MOUNT VERNON, Posey, IN	Pass	State
2026-07-22	GREEN PLAINS MOUNT VERNON LLC — high-priority violation on file	MOUNT VERNON, Posey, IN	Pass	State
2026-07-22	GREEN PLAINS MOUNT VERNON LLC — high-priority violation on file	MOUNT VERNON, Posey, IN	Pass	State
2026-07-22	GREEN PLAINS MOUNT VERNON LLC — high-priority violation on file	MOUNT VERNON, Posey, IN	Pass	State
2026-07-22	VALERO RENEWABLE FUELS CO LLC DBA VALERO MT VERNON PLANT — high-priority violation on file	MOUNT VERNON, Posey, IN	Pass	State
2026-07-22	VALERO RENEWABLE FUELS CO LLC DBA VALERO MT VERNON PLANT — high-priority violation on file	MOUNT VERNON, Posey, IN	Pass	State
2026-07-22	VALERO RENEWABLE FUELS CO LLC DBA VALERO MT VERNON PLANT — high-priority violation on file	MOUNT VERNON, Posey, IN	Pass	State
2026-07-22	VALERO RENEWABLE FUELS CO LLC DBA VALERO MT VERNON PLANT — high-priority violation on file	MOUNT VERNON, Posey, IN	Pass	State
2026-07-21	THE ANDERSONS RENEWABLES LLC — high-priority violation on file	LOGANSPORT, Cass, IN	Pass	State
2026-07-21	THE ANDERSONS RENEWABLES LLC — high-priority violation on file	LOGANSPORT, Cass, IN	Pass	State
2026-07-21	THE ANDERSONS RENEWABLES LLC — high-priority violation on file	LOGANSPORT, Cass, IN	Pass	State
2026-07-21	THE ANDERSONS RENEWABLES LLC — high-priority violation on file	LOGANSPORT, Cass, IN	Pass	State
2026-07-21	THE ANDERSONS RENEWABLES LLC — high-priority violation on file	LOGANSPORT, Cass, IN	Pass	State
2026-07-21	THE ANDERSONS RENEWABLES LLC — high-priority violation on file	LOGANSPORT, Cass, IN	Pass	State
2026-07-21	THE ANDERSONS RENEWABLES LLC — high-priority violation on file	LOGANSPORT, Cass, IN	Pass	State
2026-07-21	THE ANDERSONS RENEWABLES LLC — high-priority violation on file	LOGANSPORT, Cass, IN	Pass	State
2026-07-21	VALERO RENEWABLE FUELS CO LLC DBA VALERO MT VERNON PLANT — high-priority violation on file	MOUNT VERNON, Posey, IN	Pass	State
2026-07-21	VALERO RENEWABLE FUELS CO LLC DBA VALERO MT VERNON PLANT — high-priority violation on file	MOUNT VERNON, Posey, IN	Pass	State
2026-07-21	VALERO RENEWABLE FUELS CO LLC DBA VALERO MT VERNON PLANT — high-priority violation on file	MOUNT VERNON, Posey, IN	Pass	State
2026-07-21	VALERO RENEWABLE FUELS CO LLC DBA VALERO MT VERNON PLANT — high-priority violation on file	MOUNT VERNON, Posey, IN	Pass	State
2026-07-10	METALS AND ADDITIVES LLC — high-priority violation on file	BRAZIL, Clay, IN	Pass	State
2026-07-10	METALS AND ADDITIVES LLC — high-priority violation on file	BRAZIL, Clay, IN	Pass	State
2026-07-10	METALS AND ADDITIVES LLC — high-priority violation on file	BRAZIL, Clay, IN	Pass	State
2026-07-10	METALS AND ADDITIVES LLC — high-priority violation on file	BRAZIL, Clay, IN	Pass	State
2026-07-10	METALS AND ADDITIVES LLC — high-priority violation on file	BRAZIL, Clay, IN	Pass	State
2026-07-10	METALS AND ADDITIVES LLC — high-priority violation on file	BRAZIL, Clay, IN	Pass	State
2026-07-10	METALS AND ADDITIVES LLC — high-priority violation on file	BRAZIL, Clay, IN	Pass	State
2026-07-08	METALS AND ADDITIVES LLC — high-priority violation on file	BRAZIL, Clay, IN	Pass	State
2026-07-08	METALS AND ADDITIVES LLC — high-priority violation on file	BRAZIL, Clay, IN	Pass	State
2026-07-08	METALS AND ADDITIVES LLC — high-priority violation on file	BRAZIL, Clay, IN	Pass	State
2026-07-08	METALS AND ADDITIVES LLC — high-priority violation on file	BRAZIL, Clay, IN	Pass	State
2026-07-08	METALS AND ADDITIVES LLC — high-priority violation on file	BRAZIL, Clay, IN	Pass	State
2026-07-02	METALS AND ADDITIVES LLC — high-priority violation on file	BRAZIL, Clay, IN	Pass	State
2026-06-24	POET BIOREFINING PORTLAND LLC	PORTLAND, Jay, IN	Pass	State
2026-06-24	POET BIOREFINING PORTLAND LLC	PORTLAND, Jay, IN	Pass	State
2026-06-24	POET BIOREFINING PORTLAND LLC	PORTLAND, Jay, IN	Pass	State
2026-06-24	POET BIOREFINING PORTLAND LLC	PORTLAND, Jay, IN	Pass	State
2026-06-24	POET BIOREFINING PORTLAND LLC	PORTLAND, Jay, IN	Pass	State
2026-06-24	POET BIOREFINING PORTLAND LLC	PORTLAND, Jay, IN	Pass	State
2026-06-24	POET BIOREFINING PORTLAND LLC	PORTLAND, Jay, IN	Pass	State
2026-06-24	POET BIOREFINING PORTLAND LLC	PORTLAND, Jay, IN	Pass	State
2026-05-14	PVS TECHNOLOGIES INC — high-priority violation on file	PORTAGE, Porter, IN	Pass	State
2026-05-14	PVS TECHNOLOGIES INC — high-priority violation on file	PORTAGE, Porter, IN	Pass	State
2026-04-20	THE ANDERSONS RENEWABLES LLC — high-priority violation on file	LOGANSPORT, Cass, IN	Pass	State
2026-04-20	THE ANDERSONS RENEWABLES LLC — high-priority violation on file	LOGANSPORT, Cass, IN	Pass	State
2026-04-20	THE ANDERSONS RENEWABLES LLC — high-priority violation on file	LOGANSPORT, Cass, IN	Pass	State
2026-04-16	VALERO RENEWABLE FUELS COMPANY LLC DBA VALERO BLUFFTON PLANT	BLUFFTON, Wells, IN	Pass	State
2026-04-16	VALERO RENEWABLE FUELS COMPANY LLC DBA VALERO BLUFFTON PLANT	BLUFFTON, Wells, IN	Pass	State
2026-04-09	POET BIOREFINING PORTLAND LLC	PORTLAND, Jay, IN	Pass	State
2026-04-09	POET BIOREFINING PORTLAND LLC	PORTLAND, Jay, IN	Pass	State
2026-04-09	POET BIOREFINING PORTLAND LLC	PORTLAND, Jay, IN	Pass	State
2026-04-09	POET BIOREFINING PORTLAND LLC	PORTLAND, Jay, IN	Pass	State
2026-04-09	POET BIOREFINING PORTLAND LLC	PORTLAND, Jay, IN	Pass	State
2026-04-09	POET BIOREFINING PORTLAND LLC	PORTLAND, Jay, IN	Pass	State
2026-04-09	POET BIOREFINING PORTLAND LLC	PORTLAND, Jay, IN	Pass	State
2026-04-09	POET BIOREFINING PORTLAND LLC	PORTLAND, Jay, IN	Pass	State
2026-04-09	POET BIOREFINING PORTLAND LLC	PORTLAND, Jay, IN	Pass	State
2026-04-08	POET BIOREFINING PORTLAND LLC	PORTLAND, Jay, IN	Pass	State
2026-04-08	POET BIOREFINING PORTLAND LLC	PORTLAND, Jay, IN	Pass	State
2026-04-02	CARDINAL ETHANOL LLC — high-priority violation on file	UNION CITY, Randolph, IN	Pass	State
2026-04-01	PVS TECHNOLOGIES INC — high-priority violation on file	PORTAGE, Porter, IN	Pass	State
2026-04-01	PVS TECHNOLOGIES INC — high-priority violation on file	PORTAGE, Porter, IN	Pass	State
2026-03-19	HAMMOND GROUP INCORPORATED	HAMMOND, Lake, IN	Pass	State
2026-03-18	THE ANDERSONS RENEWABLES LLC — high-priority violation on file	LOGANSPORT, Cass, IN	Pass	State
2026-03-18	THE ANDERSONS RENEWABLES LLC — high-priority violation on file	LOGANSPORT, Cass, IN	Pass	State
2026-03-18	THE ANDERSONS RENEWABLES LLC — high-priority violation on file	LOGANSPORT, Cass, IN	Pass	State
2026-02-11	IROQUOIS BIO ENERGY COMPANY LLC — high-priority violation on file	RENSSELAER, Jasper, IN	Pass	State
2026-02-11	IROQUOIS BIO ENERGY COMPANY LLC — high-priority violation on file	RENSSELAER, Jasper, IN	Fail	State
2026-02-11	IROQUOIS BIO ENERGY COMPANY LLC — high-priority violation on file	RENSSELAER, Jasper, IN	Fail	State
2026-02-10	IROQUOIS BIO ENERGY COMPANY LLC — high-priority violation on file	RENSSELAER, Jasper, IN	Fail	State
2026-02-10	IROQUOIS BIO ENERGY COMPANY LLC — high-priority violation on file	RENSSELAER, Jasper, IN	Fail	State
2026-02-10	IROQUOIS BIO ENERGY COMPANY LLC — high-priority violation on file	RENSSELAER, Jasper, IN	Pass	State
2026-01-29	VALERO RENEWABLE FUELS COMPANY LLC DBA VALERO BLUFFTON PLANT	BLUFFTON, Wells, IN	Pass	State
2026-01-29	VALERO RENEWABLE FUELS COMPANY LLC DBA VALERO BLUFFTON PLANT	BLUFFTON, Wells, IN	Pass	State
2026-01-29	VALERO RENEWABLE FUELS COMPANY LLC DBA VALERO BLUFFTON PLANT	BLUFFTON, Wells, IN	Pass	State
2026-01-29	VALERO RENEWABLE FUELS COMPANY LLC DBA VALERO BLUFFTON PLANT	BLUFFTON, Wells, IN	Pass	State
2026-01-29	VALERO RENEWABLE FUELS COMPANY LLC DBA VALERO BLUFFTON PLANT	BLUFFTON, Wells, IN	Pass	State
2026-01-28	VALERO RENEWABLE FUELS COMPANY LLC DBA VALERO BLUFFTON PLANT	BLUFFTON, Wells, IN	Pass	State
2026-01-28	VALERO RENEWABLE FUELS COMPANY LLC DBA VALERO BLUFFTON PLANT	BLUFFTON, Wells, IN	Pass	State
2026-01-14	POET BIOREFINING - CLOVERDALE LLC — high-priority violation on file	CLOVERDALE, Putnam, IN	Pass	State
2026-01-14	POET BIOREFINING - CLOVERDALE LLC — high-priority violation on file	CLOVERDALE, Putnam, IN	Pass	State
2026-01-14	POET BIOREFINING - CLOVERDALE LLC — high-priority violation on file	CLOVERDALE, Putnam, IN	Pass	State
2026-01-14	POET BIOREFINING - CLOVERDALE LLC — high-priority violation on file	CLOVERDALE, Putnam, IN	Pass	State

Primary NAICS code as filed on the facility record; dates as filed by the agency that recorded the stack test. Figures from EPA’s ICIS-AIR download.