Assessing gas and fluid migration into aquifers near the Elk Hills, North Coles Levee, Orcutt, and Oxnard oil fields, California

Justin T Kulongoski1, Andrew G Hunt2, Robert Anders1, Celia Rosecrans3, John G Warden1, Peter B McMahon4 and Matthew K Landon1, (1)USGS California Water Science Center San Diego, San Diego, CA, United States, (2)U.S. Geological Survey, Denver Federal Center, Denver, CO, United States, (3)USGS California Water Science Center Sacramento, Sacramento, CA, United States, (4)U.S. Geological Survey, Lakewood, CO, United States