Projects in HERO
HERO uses the term "Project" to define a collection of references used to support a report or document that the EPA is developing. The project pages listed below are further grouped based on the EPA programs they support. To learn more about navigating the references that are included on the project pages explore Using HERO.
Ammonia
Ammonia, Oral - Problem Formulation
tert-Amyl ethyl ether (TAEE) (919-94-8)
tert-Amyl methyl ether (TAME) (994-05-8)
Arsenic Hazard ID (7440-38-2)
Arsenic (Inorganic)
Arsenic MOA
Arsenic Susceptibility
Asbestos (1332-21-4)
BBP (Butyl benzyl phthalate)
Benzo(a)pyrene (BaP) (50-32-8)
Biphenyl (92-52-4)
n-Butanol (71-36-3)
tert-Butanol (75-65-0)
Chloroform 2018 Update (67-66-3)
Chloroprene (126-99-8)
Chloroprene Request for Correction (RFC #21005 - 2021)
DCM (Dichloromethane) (Final, 2011)
1,2-Dibromo-3-chloropropane (96-12-8)
Dibutyl Phthalate (DBP) (84-74-2)
Diethyl phthalate (DEP) (84-66-2)
Diisobutyl Phthalate (DIBP) Final (84-69-5)
Diisononyl Phthalate (DINP)
1,4-Dioxane - with inhalation update
Dioxin (2012 Project Page for Final Report) (1746-01-6)
ETBE (637-92-3)
Ethylbenzene (100-41-4)
Formaldehyde (50-00-0)
Hexabromocyclododecane (HBCD) (25637-99-4)
Hexachloroethane (HCE) (Final, 2011)
Inorganic Mercury Salts (2)
Libby Amphibole Asbestos (Draft, 2011)
Methanol (Non-Cancer) (67-56-1)
Methylmercury (22967-92-6)
Molybdenum (7439-98-7)
Naphthalene (91-20-3)
PCBs (1336-36-3)
Phthalates – Targeted Search for Epidemiological Studies
PM ISA
RDX (121-82-4)
SR Automation
Tetrachloroethylene (Perc) (Final, 2012)
Trichloroacetic acid (TCA) (Final, 2011)
Trichloroethylene (TCE) (Final, 2011)
Trimethylbenzenes (Interagency Science Discussion Draft)
Trimethylbenzenes (TMB)
Uranium
Vanadium Compounds - Problem Formulation
Vanadium Pentoxide (Draft, 2011)
Ammonia, Oral - Problem Formulation
tert-Amyl ethyl ether (TAEE) (919-94-8)
tert-Amyl methyl ether (TAME) (994-05-8)
Arsenic Hazard ID (7440-38-2)
Arsenic (Inorganic)
Arsenic MOA
Arsenic Susceptibility
Asbestos (1332-21-4)
BBP (Butyl benzyl phthalate)
Benzo(a)pyrene (BaP) (50-32-8)
Biphenyl (92-52-4)
n-Butanol (71-36-3)
tert-Butanol (75-65-0)
Chloroform 2018 Update (67-66-3)
Chloroprene (126-99-8)
Chloroprene Request for Correction (RFC #21005 - 2021)
DCM (Dichloromethane) (Final, 2011)
1,2-Dibromo-3-chloropropane (96-12-8)
Dibutyl Phthalate (DBP) (84-74-2)
Diethyl phthalate (DEP) (84-66-2)
Diisobutyl Phthalate (DIBP) Final (84-69-5)
Diisononyl Phthalate (DINP)
1,4-Dioxane - with inhalation update
Dioxin (2012 Project Page for Final Report) (1746-01-6)
ETBE (637-92-3)
Ethylbenzene (100-41-4)
Formaldehyde (50-00-0)
Hexabromocyclododecane (HBCD) (25637-99-4)
Hexachloroethane (HCE) (Final, 2011)
Inorganic Mercury Salts (2)
Libby Amphibole Asbestos (Draft, 2011)
Methanol (Non-Cancer) (67-56-1)
Methylmercury (22967-92-6)
Molybdenum (7439-98-7)
Naphthalene (91-20-3)
PCBs (1336-36-3)
Phthalates – Targeted Search for Epidemiological Studies
PM ISA
RDX (121-82-4)
SR Automation
Tetrachloroethylene (Perc) (Final, 2012)
Trichloroacetic acid (TCA) (Final, 2011)
Trichloroethylene (TCE) (Final, 2011)
Trimethylbenzenes (Interagency Science Discussion Draft)
Trimethylbenzenes (TMB)
Uranium
Vanadium Compounds - Problem Formulation
Vanadium Pentoxide (Draft, 2011)
ISA-CO (2010 Final Project Page)
ISA-Lead (2013 Final Project Page)
ISA-NOx
ISA NOxSOxPM Ecology (2018)
ISA NOxSOxPM Ecology (2020- Final Project Page)
ISA-Ozone (2013 Final Project Page)
ISA-Ozone (2020 Final Project Page)
ISA-PM (2009 Final Project Page)
ISA-PM (2019)
ISA – PM Supplement (2022)
ISA-SOx
Litsearch – PM ISA Supplement 2021
PM Provisional Assessment (2012 Project Page)
ISA-Lead (2013 Final Project Page)
ISA-NOx
ISA NOxSOxPM Ecology (2018)
ISA NOxSOxPM Ecology (2020- Final Project Page)
ISA-Ozone (2013 Final Project Page)
ISA-Ozone (2020 Final Project Page)
ISA-PM (2009 Final Project Page)
ISA-PM (2019)
ISA – PM Supplement (2022)
ISA-SOx
Litsearch – PM ISA Supplement 2021
PM Provisional Assessment (2012 Project Page)
Dibutyl sebacate (109-43-3)
Fatty Alcohols
Gluconates
Glycols
1,2-Hexanediol (6920-22-5)
Malonates
3-Methoxybutyl acetate (4435-53-4)
Propylene glycol ethers (88917-22-0 & 55934-93-5)
Sodium glucoheptonate (31138-65-5)
Squalane (111-01-3)
Fatty Alcohols
Gluconates
Glycols
1,2-Hexanediol (6920-22-5)
Malonates
3-Methoxybutyl acetate (4435-53-4)
Propylene glycol ethers (88917-22-0 & 55934-93-5)
Sodium glucoheptonate (31138-65-5)
Squalane (111-01-3)
5:3 acid (914637-49-3)
6:2/8:2 diPAP (943913-15-3)
6:2 diPAP (57677-95-9)
6:2 monoPAP (57678-01-0)
8:2 diPAP (678-41-1)
8:2 monoPAP (57678-03-2)
ADONA (919005-14-4)
FtOH 6:2 (647-42-7)
FtOH 8:2 (678-39-7)
FtS 8:2 (39108-34-4)
GenX Chemicals (CASRN 13252-13-6 and CASRN 62037-80-3)
Nafion (311-20-9)
NEtFOSAA (2991-50-6)
NMeFOSAA (2355-31-9)
^Per- and Polyfluoroalkyl Substances (PFAS)
PFAS 150
PFBA (375-22-4)
PFBS (375-73-5)
PFDA (335-76-2)
PFDoA (307-55-1)
PFDS (335-77-3)
PFHpA (375-85-9)
PFHpS (375-92-8)
PFHxA (307-24-4)
PFHxS (355-46-4)
PFNA (375-95-1)
PFNS (68259-12-1)
PFOA (335-67-1) and PFOS (1763-23-1)
PFOA and PFOS OW MCLG Approaches
PFOSA (754-91-6)
PFPeA (2706-90-3)
PFPeS (2706-91-4)
PFUnA (2058-94-8)
R5-MI STSC Request
6:2/8:2 diPAP (943913-15-3)
6:2 diPAP (57677-95-9)
6:2 monoPAP (57678-01-0)
8:2 diPAP (678-41-1)
8:2 monoPAP (57678-03-2)
ADONA (919005-14-4)
FtOH 6:2 (647-42-7)
FtOH 8:2 (678-39-7)
FtS 8:2 (39108-34-4)
GenX Chemicals (CASRN 13252-13-6 and CASRN 62037-80-3)
Nafion (311-20-9)
NEtFOSAA (2991-50-6)
NMeFOSAA (2355-31-9)
^Per- and Polyfluoroalkyl Substances (PFAS)
PFAS 150
PFBA (375-22-4)
PFBS (375-73-5)
PFDA (335-76-2)
PFDoA (307-55-1)
PFDS (335-77-3)
PFHpA (375-85-9)
PFHpS (375-92-8)
PFHxA (307-24-4)
PFHxS (355-46-4)
PFNA (375-95-1)
PFNS (68259-12-1)
PFOA (335-67-1) and PFOS (1763-23-1)
PFOA and PFOS OW MCLG Approaches
PFOSA (754-91-6)
PFPeA (2706-90-3)
PFPeS (2706-91-4)
PFUnA (2058-94-8)
R5-MI STSC Request
Alaska Waste and Health Impacts
Exposure Factors Handbook (Post 2011)
Exposure Manuscripts
Justice, Equity, Diversity, and Inclusion (JEDI) Resources
Mouse Lung Tumor
MSA-Multipollutant Exposure Metric Review
Nanoscale Carbon
Nanoscale Silver
Naphthalene (2021 Evidence mapping publication)
Nutrient Stressors and Biological Responses
Project 9 – Soil and Dust Ingestion
Public Metadata
Ramazzini Institute
WFLC - CAIF Report
Exposure Factors Handbook (Post 2011)
Exposure Manuscripts
Justice, Equity, Diversity, and Inclusion (JEDI) Resources
Mouse Lung Tumor
MSA-Multipollutant Exposure Metric Review
Nanoscale Carbon
Nanoscale Silver
Naphthalene (2021 Evidence mapping publication)
Nutrient Stressors and Biological Responses
Project 9 – Soil and Dust Ingestion
Public Metadata
Ramazzini Institute
WFLC - CAIF Report