Editing San Francisco Bay (section)

===PBDEs===
The bay was once considered a hotspot for polybrominated diphenyl ether ([[PBDE]]) flame retardants used to make upholstered furniture and infant care items less flammable. PBDEs have been largely phased out and replaced with alternative phosphate flame retardants. A 2019 [[San Francisco Estuary Institute]] (SFEI) study assayed a wide range of these newer flame retardant chemicals in Bay waters, bivalve [[California mussel]]s (''Mytilus californianus''), and [[harbor seal]]s (''Phoca vitulina'') which haul out in Corkscrew Slough<ref>{{cite gnis|233719|Corkscrew Slough}}</ref> on [[Bair Island]] in [[San Mateo County]], with phosphate flame retardant contaminants such as [[tris(1,3-dichloro-2-propyl)phosphate]] (TDCPP) and [[triphenyl phosphate]] (TPhP) found at levels comparable to thresholds for aquatic toxicity.<ref>{{cite journal |title=Characterization of brominated, chlorinated, and phosphate flame retardants in San Francisco Bay, an urban estuary |first1=Rebecca |last1=Sutton |first2=Da |last2=Chen |first3=Jennifer |last3=Sun |first4=Denise J. |last4=Greig |first5=Yan |last5=Wu |journal=Science of the Total Environment |volume=652 |year=2019 |pages=212–223 |url=https://www.sfei.org/news/rmp-journal-article-characterization-brominated-chlorinated-and-phosphate-flame-retardants-san#sthash.nPaHsoyk.dpbs |access-date=March 16, 2019 |doi=10.1016/j.scitotenv.2018.10.096 |pmid=30366322 |bibcode=2019ScTEn.652..212S |doi-access=free |archive-date=April 3, 2019 |archive-url=https://web.archive.org/web/20190403133425/https://www.sfei.org/news/rmp-journal-article-characterization-brominated-chlorinated-and-phosphate-flame-retardants-san#sthash.nPaHsoyk.dpbs |url-status=live }}</ref>