SACRAMENTO, Calif. (AP) — Lawmakers are considering the following bills that seek to strengthen oversight of hydraulic fracturing:

— AB7 by Assemblyman Bob Wieckowski, D-Fremont, would require regulators to adopt rules by Jan. 1 that standardize well construction, public notification prior to fracking and disclosure of the chemicals used. Trade-secret chemicals would be exempt from public disclosure but must be revealed to regulators.

— SB4, a similar measure from Sen. Fran Pavley, D-Agoura Hills, proposes adopting state regulations for construction standards and chemical disclosure by January 2015.

— AB288 by Assemblyman Marc Levine, D-San Rafael, would require drillers to show that fracking does not present health risks, adjust the permit review period and allow regulators to establish a fee for permits involving fracking.

— AB669 by Assemblyman Mark Stone, D-Monterey, proposes that a regional water quality board must approve an operator's wastewater disposal plan before drilling.

— AB982 by Assemblyman Das Williams, D-Santa Barbara, would require drillers to submit a groundwater monitoring plan and detail their water use.

— SB395 by Sen. Hannah-Beth Jackson, D-Santa Barbara, would require fracking wastewater to be regulated as a hazardous waste through the state Department of Toxic Substances Control.

— SB665 by Sen. Lois Wolk, D-Davis, seeks to revise the bonding amounts that drillers must post in case a well is later abandoned.

— SB241 by Sen. Noreen Evans, D-Santa Rosa, would impose an oil severance tax of 9.9 percent on the value of each barrel of oil produced in California. The revenue would go toward higher education and state parks.