SAN FRANCISCO (AP) — California proposed regulations on Friday that would set new flammability standards and allow furniture and some children's product manufacturers to stop using chemical flame retardants. The change was proposed after decades of complaints about the spread of chemicals known as PBDEs and TDCPP into the environment. California is the only U.S. state with a mandatory flammability standard for residential furniture, a standard often achieved by the use of chemically treated foams.