EPA Air · stack tests by state and year

Air-emissions stack tests in California, 2020

15,352Stack tests

A stack test measures what a source actually emits, at the stack, against the limit in its permit. Every stack test below was recorded against a source in California during 2020; one facility can appear more than once, because this is a record of what happened rather than a list of places.

Counties in California, 2020

California, other years

Air-emissions stack tests recorded in California, 2020

Date	Facility	Where	Kind	Agency
2020-11-18	AERA ENERGY — high-priority violation on file	COALINGA, Fresno, CA	Pass	Local
2020-11-18	AERA ENERGY — high-priority violation on file	COALINGA, Fresno, CA	Pass	Local
2020-11-18	AERA ENERGY — high-priority violation on file	COALINGA, Fresno, CA	Pass	Local
2020-11-18	AERA ENERGY — high-priority violation on file	COALINGA, Fresno, CA	Pass	Local
2020-11-18	AERA ENERGY — high-priority violation on file	COALINGA, Fresno, CA	Pass	Local
2020-11-18	AERA ENERGY — high-priority violation on file	COALINGA, Fresno, CA	Pass	Local
2020-11-18	AERA ENERGY — high-priority violation on file	COALINGA, Fresno, CA	Pass	Local
2020-11-18	AERA ENERGY — high-priority violation on file	COALINGA, Fresno, CA	Pass	Local
2020-11-18	AERA ENERGY — high-priority violation on file	COALINGA, Fresno, CA	Pass	Local
2020-11-18	AERA ENERGY — high-priority violation on file	COALINGA, Fresno, CA	Pass	Local
2020-11-18	AERA ENERGY — high-priority violation on file	COALINGA, Fresno, CA	Pass	Local
2020-11-18	AERA ENERGY — high-priority violation on file	COALINGA, Fresno, CA	Pass	Local
2020-11-18	AERA ENERGY — high-priority violation on file	COALINGA, Fresno, CA	Pass	Local
2020-11-18	AERA ENERGY — high-priority violation on file	COALINGA, Fresno, CA	Pass	Local
2020-11-18	AERA ENERGY — high-priority violation on file	COALINGA, Fresno, CA	Pass	Local
2020-11-18	AERA ENERGY — high-priority violation on file	COALINGA, Fresno, CA	Pass	Local
2020-11-18	AERA ENERGY — high-priority violation on file	COALINGA, Fresno, CA	Pass	Local
2020-11-18	AERA ENERGY — high-priority violation on file	COALINGA, Fresno, CA	Pass	Local
2020-11-18	AERA ENERGY — high-priority violation on file	COALINGA, Fresno, CA	Pass	Local
2020-11-18	AERA ENERGY — high-priority violation on file	COALINGA, Fresno, CA	Pass	Local
2020-11-18	AERA ENERGY — high-priority violation on file	COALINGA, Fresno, CA	Pass	Local
2020-11-18	AERA ENERGY — high-priority violation on file	COALINGA, Fresno, CA	Pass	Local
2020-11-18	AERA ENERGY — high-priority violation on file	COALINGA, Fresno, CA	Pass	Local
2020-11-18	AERA ENERGY — high-priority violation on file	COALINGA, Fresno, CA	Pass	Local
2020-11-18	AERA ENERGY — high-priority violation on file	COALINGA, Fresno, CA	Pass	Local
2020-11-18	AERA ENERGY — high-priority violation on file	COALINGA, Fresno, CA	Pass	Local
2020-11-18	AERA ENERGY — high-priority violation on file	COALINGA, Fresno, CA	Pass	Local
2020-11-18	AERA ENERGY — high-priority violation on file	COALINGA, Fresno, CA	Pass	Local
2020-11-18	AERA ENERGY — high-priority violation on file	COALINGA, Fresno, CA	Pass	Local
2020-11-18	AERA ENERGY — high-priority violation on file	COALINGA, Fresno, CA	Pass	Local
2020-11-18	AERA ENERGY — high-priority violation on file	COALINGA, Fresno, CA	Pass	Local
2020-11-18	AERA ENERGY — high-priority violation on file	COALINGA, Fresno, CA	Pass	Local
2020-11-18	AERA ENERGY — high-priority violation on file	COALINGA, Fresno, CA	Pass	Local
2020-11-18	AERA ENERGY — high-priority violation on file	COALINGA, Fresno, CA	Pass	Local
2020-11-18	AERA ENERGY — high-priority violation on file	COALINGA, Fresno, CA	Pass	Local
2020-11-18	AERA ENERGY — high-priority violation on file	COALINGA, Fresno, CA	Pass	Local
2020-11-18	AERA ENERGY — high-priority violation on file	COALINGA, Fresno, CA	Pass	Local
2020-11-18	AERA ENERGY — high-priority violation on file	COALINGA, Fresno, CA	Pass	Local
2020-11-18	AERA ENERGY — high-priority violation on file	COALINGA, Fresno, CA	Pass	Local
2020-11-18	AERA ENERGY — high-priority violation on file	COALINGA, Fresno, CA	Pass	Local
2020-11-18	AERA ENERGY — high-priority violation on file	COALINGA, Fresno, CA	Pass	Local
2020-11-18	AERA ENERGY — high-priority violation on file	COALINGA, Fresno, CA	Pass	Local
2020-11-18	AERA ENERGY — high-priority violation on file	COALINGA, Fresno, CA	Pass	Local
2020-11-18	AERA ENERGY — high-priority violation on file	COALINGA, Fresno, CA	Pass	Local
2020-11-18	AERA ENERGY — high-priority violation on file	COALINGA, Fresno, CA	Pass	Local
2020-11-18	AERA ENERGY — high-priority violation on file	COALINGA, Fresno, CA	Pass	Local
2020-11-18	AERA ENERGY — high-priority violation on file	COALINGA, Fresno, CA	Pass	Local
2020-11-18	AERA ENERGY — high-priority violation on file	COALINGA, Fresno, CA	Pass	Local
2020-11-18	AERA ENERGY — high-priority violation on file	COALINGA, Fresno, CA	Pass	Local
2020-11-18	AERA ENERGY — high-priority violation on file	COALINGA, Fresno, CA	Pass	Local
2020-11-18	AERA ENERGY — high-priority violation on file	COALINGA, Fresno, CA	Pass	Local
2020-11-18	AERA ENERGY — high-priority violation on file	COALINGA, Fresno, CA	Pass	Local
2020-11-18	AERA ENERGY — high-priority violation on file	COALINGA, Fresno, CA	Pass	Local
2020-11-18	AERA ENERGY — high-priority violation on file	COALINGA, Fresno, CA	Pass	Local
2020-11-18	AERA ENERGY — high-priority violation on file	COALINGA, Fresno, CA	Pass	Local
2020-11-18	AERA ENERGY — high-priority violation on file	COALINGA, Fresno, CA	Pass	Local
2020-11-18	AERA ENERGY — high-priority violation on file	COALINGA, Fresno, CA	Pass	Local
2020-11-18	AERA ENERGY — high-priority violation on file	COALINGA, Fresno, CA	Pass	Local
2020-11-18	AERA ENERGY — high-priority violation on file	COALINGA, Fresno, CA	Pass	Local
2020-11-18	AERA ENERGY — high-priority violation on file	COALINGA, Fresno, CA	Pass	Local
2020-11-18	AERA ENERGY — high-priority violation on file	COALINGA, Fresno, CA	Pass	Local
2020-11-18	AERA ENERGY — high-priority violation on file	COALINGA, Fresno, CA	Pass	Local
2020-11-18	AERA ENERGY — high-priority violation on file	COALINGA, Fresno, CA	Pass	Local
2020-11-18	AERA ENERGY — high-priority violation on file	COALINGA, Fresno, CA	Pass	Local
2020-11-18	AERA ENERGY — high-priority violation on file	COALINGA, Fresno, CA	Pass	Local
2020-11-18	AERA ENERGY — high-priority violation on file	COALINGA, Fresno, CA	Pass	Local
2020-11-18	AERA ENERGY — high-priority violation on file	COALINGA, Fresno, CA	Pass	Local
2020-11-18	AERA ENERGY — high-priority violation on file	COALINGA, Fresno, CA	Pass	Local
2020-11-18	AERA ENERGY — high-priority violation on file	COALINGA, Fresno, CA	Pass	Local
2020-11-18	AERA ENERGY — high-priority violation on file	COALINGA, Fresno, CA	Pass	Local
2020-11-18	AERA ENERGY — high-priority violation on file	COALINGA, Fresno, CA	Pass	Local
2020-11-18	AERA ENERGY — high-priority violation on file	COALINGA, Fresno, CA	Pass	Local
2020-11-18	AERA ENERGY — high-priority violation on file	COALINGA, Fresno, CA	Pass	Local
2020-11-18	AERA ENERGY — high-priority violation on file	COALINGA, Fresno, CA	Pass	Local
2020-11-18	CALIFORNIA DAIRIES, INC. — high-priority violation on file	TURLOCK, Stanislaus, CA	Pass	Local
2020-11-18	CALIFORNIA DAIRIES, INC. — high-priority violation on file	TURLOCK, Stanislaus, CA	Pass	Local
2020-11-18	CALIFORNIA DAIRIES, INC. — high-priority violation on file	TURLOCK, Stanislaus, CA	Pass	Local
2020-11-18	CALIFORNIA DAIRIES, INC. — high-priority violation on file	TURLOCK, Stanislaus, CA	Pass	Local
2020-11-18	CALIFORNIA DAIRIES, INC. — high-priority violation on file	TURLOCK, Stanislaus, CA	Pass	Local
2020-11-18	CALIFORNIA DAIRIES, INC. — high-priority violation on file	TURLOCK, Stanislaus, CA	Pass	Local
2020-11-18	CALIFORNIA DAIRIES, INC. — high-priority violation on file	TURLOCK, Stanislaus, CA	Pass	Local
2020-11-18	CALIFORNIA DAIRIES, INC. — high-priority violation on file	TURLOCK, Stanislaus, CA	Pass	Local
2020-11-18	CALIFORNIA DAIRIES, INC. — high-priority violation on file	TURLOCK, Stanislaus, CA	Pass	Local
2020-11-18	CALIFORNIA DAIRIES, INC. — high-priority violation on file	TURLOCK, Stanislaus, CA	Pass	Local
2020-11-18	CALIFORNIA DAIRIES, INC. — high-priority violation on file	TURLOCK, Stanislaus, CA	Pass	Local
2020-11-18	CALIFORNIA DAIRIES, INC. — high-priority violation on file	TURLOCK, Stanislaus, CA	Pass	Local
2020-11-18	CALIFORNIA DAIRIES, INC. — high-priority violation on file	TURLOCK, Stanislaus, CA	Pass	Local
2020-11-18	CALIFORNIA DAIRIES, INC. — high-priority violation on file	TURLOCK, Stanislaus, CA	Pass	Local
2020-11-17	TESORO REFINING & MARKETING CO, LLC — high-priority violation on file	CARSON, Los Angeles, CA	Pass	Local
2020-11-17	ULTRAMAR INC	WILMINGTON, Los Angeles, CA	Pass	Local
2020-11-17	CHEVRON USA INC- HEAVY OIL PRODUCTION	COALINGA, Fresno, CA	Pass	Local
2020-11-17	CHEVRON USA INC- HEAVY OIL PRODUCTION	COALINGA, Fresno, CA	Pass	Local
2020-11-17	CHEVRON USA INC- HEAVY OIL PRODUCTION	COALINGA, Fresno, CA	Pass	Local
2020-11-17	CHEVRON USA INC- HEAVY OIL PRODUCTION	COALINGA, Fresno, CA	Pass	Local
2020-11-17	CHEVRON USA INC- HEAVY OIL PRODUCTION	COALINGA, Fresno, CA	Pass	Local
2020-11-17	CHEVRON USA INC- HEAVY OIL PRODUCTION	COALINGA, Fresno, CA	Pass	Local
2020-11-17	CHEVRON USA INC- HEAVY OIL PRODUCTION	COALINGA, Fresno, CA	Pass	Local
2020-11-17	CHEVRON USA INC- HEAVY OIL PRODUCTION	COALINGA, Fresno, CA	Pass	Local
2020-11-17	CHEVRON USA INC- HEAVY OIL PRODUCTION	COALINGA, Fresno, CA	Pass	Local
2020-11-17	CHEVRON USA INC- HEAVY OIL PRODUCTION	COALINGA, Fresno, CA	Pass	Local

Dates as filed by the agency that recorded the stack test. Figures from EPA’s ICIS-AIR download.