Zip Code 90755
📍 Signal Hill, CA
Toxic Air Emissions Report (2024)
Data Source: EPA TRI (2024) • Updated Nov 2025
1,694.00 lbs
State Score
37
/ 100
National Score
54
/ 100
In 2024, industrial facilities in Signal Hill, CA released over 1,694.00 lbs of pollutants. The primary source was TESORO HATHAWAY TERMINAL, which emitted n-Hexane into the local air. Air quality in 90755 is relatively consistent with regional baselines.
Top Polluting Facilities
- TESORO HATHAWAY TERMINALOwned by: MARATHON PETROLEUM CORPn-Hexane released to air477.00 lbsLBS
- TESORO HATHAWAY TERMINALOwned by: MARATHON PETROLEUM CORPToluene released to air370.00 lbsLBS
- TESORO HATHAWAY TERMINALOwned by: MARATHON PETROLEUM CORPXylene (mixed isomers) released to air320.00 lbsLBS
- TESORO HATHAWAY TERMINALOwned by: MARATHON PETROLEUM CORPCyclohexane released to air276.00 lbsLBS
- TESORO HATHAWAY TERMINAL Cancer RiskOwned by: MARATHON PETROLEUM CORPBenzene released to air137.00 lbsLBS
- TESORO HATHAWAY TERMINAL Cancer RiskOwned by: MARATHON PETROLEUM CORPEthylbenzene released to air71 lbsLBS
- TESORO HATHAWAY TERMINALOwned by: MARATHON PETROLEUM CORP1,2,4-Trimethylbenzene released to air37 lbsLBS
- TESORO HATHAWAY TERMINAL Cancer RiskOwned by: MARATHON PETROLEUM CORPNaphthalene released to air4 lbsLBS
- TESORO HATHAWAY TERMINAL Cancer RiskOwned by: MARATHON PETROLEUM CORPCumene released to air2 lbsLBS
Nearby Pollution Sources (< 20 miles)
- Carson, CA (90745) 5.9 mi awayHeavy Industrial Activity975,028.57 lbsAnnual Emissions
- Wilmington, CA (90744) 5.7 mi awayHeavy Industrial Activity430,915.61 lbsAnnual Emissions
- Torrance, CA (90504) 10.4 mi awayHeavy Industrial Activity245,819.31 lbsAnnual Emissions
Check Nearby Zip Codes
😷
Protect Your Lungs
Because toxic gases and VOCs were detected in this area (likely from the Benzene), standard filters are not enough. We strongly recommend an Activated Carbon purifier to adsorb these fumes.
View Recommended Carbon Filters →Chemical Breakdown
Top 5 Pollutants by Weight
Share This Report
Help guide others to cleaner air.