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1 KLE/NFELOER <br /> �i&h7ht Pebble. RightSohn bons. <br /> Joaquin County Flood Control and Water Conservation District data detailed <br /> in Section 2.4.4 of this report. Please note that these monitoring events took <br /> place during the winter when the nursery was not irrigating and during the <br /> spring and summer when they were irrigating . According to the nursery's <br /> water use records , the nursery did not irrigate from November 21 , 1999 to <br /> late-March 2000. Therefore , the gradient and flow direction for groundwater <br /> within the deep aquifer appears to be consistent irrespective of pumping . No <br /> obvious impact of the nursery's operations on deep groundwater quality. <br /> Additionally, the direction of groundwater flow in the deep aquifer is towards <br /> the southwest and not towards the Dodge and Eason wells to the north . <br /> Based on the results of the monitoring conducted , published information and the conclusions <br /> outlined above, the following recommendations were made by Kleinfelder: <br /> A. Given the deep aquifer groundwater quality before and during Norman's <br /> Nursery's growing season and pumping , the nursery appears to have no <br /> effect on the elevated nitrate concentrations in the Dodge and Eason wells. <br /> The concentrations of nitrate in the nearby wells are generally 3 to 5 times <br /> the concentrations of nitrates on the northern edge of the nursery. <br /> Furthermore, water flow direction has consistently been to the southwest and <br /> not towards the north-northwest. Therefore , other potential sources for the <br /> elevated nitrates in the production wells on the Dodge and Eason property <br /> should be explored by the RWQCB . These may include fertilization on the <br /> adjacent properties, contamination of the water supply by nearby nitrate <br /> sources (e. g , septic systems and leachfields) , wells with poor surface seals <br /> which may allow surface water infiltration , etc. <br /> B. Kleinfelder recommends that a copy of this report be submitted to the <br /> RWQCB and PHS/EHD for their review and comment. <br /> For a summary of the monitoring well construction details for the wells installed at Norman's <br /> Nursery and the surrounding property, please refer to Table 6 . <br /> At the request of the RWQCB, additional chemical analysis was conducted on nearly all <br /> available sample locations during the Fourth Quarter of 2000 . Those analyses were <br /> summarized along with the normal quarterly monitoring data in Kleinfelder's report titled <br /> "Fourth Quarter 2000 Ground and Surface Water Monitoring. . . " dated January 29, 2001 . The <br /> following additional special conclusion was made: <br /> 117226. E02/ST013R0176 Page 16 of 40 January 31 , 2013 <br /> copyright 2013 Kleinfelder <br />