In March 2008, Catellus development executed a Master Developer Agreement with the County of San Joaquin for the development of the Stockton Airport Special Purpose Plan (Airpark 599), a 550-acre parcel of land bounded by Interstate 5 and Highway 99 in San Joaquin County. As a result of the severe economic downturn experienced through 2009, development of the project stalled and a new plan for the project has emerged.  Seth Wurzel has represented the County in its negotiations with Catellus providing financial analysis, economic evaluations and negotiation support.