SITE INFORMATION AND CORRESPONDENCE 1980-1999

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MONITORING WELL WORK PLAN The City of Lodi is expanding its wastewater reclamation land area to the southeast of the treatment plant. The land will be managed in the same manner as existing lands with a variety of field crops rown grown for alfalfa.mal f Twoond f newomonitoringpwells arerproposedlas shown oats, and alfalfa. on the map, figure 1. The general groundwater direction, based on previous studies and City monitoring, is from the northeast to the southwest. Groundwater gradient information is summarized in the Whitley, Burchett, and Associates, Inc. report, "White Slough Water Pollution Control Plant Groundwater Monitoring Program" . This report is attached as Appendix A. There are currently five monitoring wells located around the plant and reclamation area. They are WSM-01, -02, -03 -04 and -05 . A new well WSM-06 will be placed on the southerly boundary of the new irrigation area. An additional monitoring well WSM-07 will be placed upgradient (along Thornton Road) to monitor background water quality. The design of the monitoring wells is shown on figure 2 . ion Soils will n efigured3using 3. M the Monitoring UnifiedSoil construction tis showneon as shown g Appendix B. MONITORING PROGRAM The monitoring program will continue as is currently practiced e by City of Lodi. A minimum of 4 well volumes will be pump ed re sampling. Conductivity and pH will be measured with portable instruments. Repeat this process, including the testing. If the pH and conductivity values are the same, collect samples in the appropriate containers for the parameters to be analyzed. If there is a significant difference in pH and conductivity readings between two successive samples, then pumped another 4 well volumes and re- test until the readings are the same.