Pelona Vista Park is a multi-use recreation facility for the City of Palmdale. It is sited within and adjacent to the Little Rock fault zone. Joint uses included several soccer fields, a park and ride, and storm water detention. Complex geologic conditions and siting of the detention facility dam embankment were important aspects of the project design. Other issues related to liquefaction and lateral spreading potentials, groundwater and mounding water conditions, and remedial grading requirements for construction of the dam embankment. State of California Division of Safety of Dams participated in the design and construction agency oversight. Earth Systems performed the geologic consulting services during the design and site grading phases of the project.