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1i0 DESCRIPTION PROPOSED PROJECT INTRODUCTION The City of Tracy has prepared a plan to dispose and reuse municipal sludge that is currently generated at the City of Tracy, California, Wastewater Treatment Plant (WWTP). Approximately 2,590 to 4,160 dry tons of municipal sludge are generated annually at the City's WWTP. The plan calls for the application of dried sludge on agricultural fields at rates permitting nutrients contained in the sludge to be utilized by the agricultural crops. Land application of municipal sludge would constitute a soil amendment and reduce the need for additional fertilizers required for crop production. Land application of municipal sludge would also avoid the need to dispose of the sludge in a sanitary landfill or other disposal site. PROJECT LOCATION i The plan proposes to transport the dried sludge from the existing WWTP drying beds to a land application site located on lands surrounding the New Jerusalem Airport. Lands owned by the City of Tracy total 300 acres. These lands are leased by the City to K&L Farms, managers of agricultural production on these lands as well as the surrounding 1,700 acres. The site is illustrated in Figure 1. i METHOD OF APPLICATION The sludge would be applied to agricultural fields at agronomic rates consistent with nutrient requirements of the agricultural crops. Several optional methods of storing sludge for subsequent application to adjacent lands have been identified. These optional methods include: A) Periodically transporting dry sludge from the WWTP to a sludge storage facility at the New Jerusalem Airport then spreading the sludge onto the fields during the fall; B) Constructing a sludge transfer station at the New Jerusa- lem Airport; sludge would be transported to the station during the summer and sub- sequently applied to the fields in the fall; C) Direct transport of sludge from the WWTP drying beds to the fields using trucks equipped with mechanical spreading units. Each of the optional application methods, described above, includes fall application of sludge in order to take advantage of optimal soil and sludge moisture conditions. SITE MONITORING PROGRAM In order to monitor the response of the site to sludge application, the following site monitoring program would be implemented as part of the Sludge Management Plan. 0 1 sACM7/081.51