HELIX Environmental Planning (HELIX) completed archaeological fieldwork at Mission Cove for a data recovery program at a significant cultural resource in the City of Oceanside. Intact buried deposits of cultural resources were identified during previous testing at the site, and an intact hearth feature was encountered at a depth of one meter during trenching prior to the data recovery excavation. HELIX is analyzing recovered cultural material that includes obtaining radiocarbon dates from charcoal and shell collected from the hearth. Prior to conducting the data recovery program, HELIX archaeologists worked with the project applicant and the San Luis Rey Band of Luiseño Mission Indians to redesign the project to avoid impacts to cultural resources as much as possible. The majority of the significant archaeological site will be preserved and will not be affected by project development.