California Environmental Protection Agency

California Environmental Protection Agency

The California Environmental Protection Agency is a state cabinet-level agency within the government of California. The mission of CalEPA is to restore, protect and enhance the environment, to ensure public health, environmental quality and economic vitality. Derived from Wikipedia licensed CC-BY-SA.

Open Access statistics for California Environmental Protection Agency, United States, covering academic research published from 2000 to 2025. Read More.


Open Access Percentage

43%


Total
Publications

1.1K


Total Open
Publications

465


Total
Citations

69K


Open Access
Percentage

43%


Total
Publications

1.1K


Total Open
Publications

465


Total
Citations

69K

Wikipedia

Website

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Breakdown

12% 22% 9% 57%

Publisher Open

12%

Both

22%

Other Platform Open

9%

Closed

57%

Percentage of Open Access over time

0%10%20%30%40%50%60%70%80%90%100%
20002001200220032004200520062007200820092010201120122013201420152016201720182019202020212022202320242025

Publisher Open

Both

Other Platform Open

Closed

Volume of Open Access over time

051015202530354045505560Total Publications
20002001200220032004200520062007200820092010201120122013201420152016201720182019202020212022202320242025

Open

Closed

Publisher Open

51%OA Journal

OA Journal 51%

189

Hybrid 20%

72

No Guarantees 29%

105

Other Platform Open

Domain 76%

260

Institution 51%

173

Other Internet 11%

38

Preprint 4%

12

Public 2%

6

Other Platform Locations

Name

Platform Type

Publications

PubMed Central
Domain
260
doaj.org OAI-PMH Repository
Institution
88
California Digital Library
Institution
67
DOI
Other Internet
31
Europe PMC
Domain
14
Unknown Repository
Other Internet
10
Office of Scientific and Technical Information
Institution
9
Le Centre pour la Communication Scientifique Directe - HAL - Diderot
Institution
8
Figshare
Public
6
ChemRxiv
Preprint
6
1 / 6

Data updated 18 June 2026

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