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1 • • <br />EXHIBIT G (Cont'd) <br />' Mobile Premix Concrete, Inc. <br />Page 3 <br />' February 16, 1978 <br />Company attempted to provide flows to the remaining portion of the ditch <br />to the north by diverting natural First Creek flows along the east side <br />of the mining oepration in a man-made ditch. This configuration is shown <br />' on Exhibit No. 3. The success of this configuration is somewhat questionable. <br />In order to restore some of the ground-water contributions as well as <br />• natural runoff to Young Ditch, it is recommended that a 12 to 15 inch <br />culvert be placed through the low dike along the north property line discharg-, <br />ing directly into the remaining portion of the ditch on the Ferguson property. <br />The invert elevations of the culvert should be set at the original grade <br />' line of the original ditch. Since the gravel lake levels will fluctuate <br />in accordance with the historic groundwater levels, flow from the lake <br />to the Young Ditch will be in conformance with historic conditions. In <br />' addition, protection from excessive flows will be provided via the metering <br />effect of the culvert and dike on storm runoff occuring south of the Ferguson. <br />property. This will result in longer continuous flows in the ditch. <br />t It is also expected that the sediment entrapment capability of the lakes <br />will provide a higher quality flow into Young Ditch than what has been <br />previously experienced. Should it become necessary, water from the gravel <br />' lakes could be pumped directly into the Young Ditch through the culvert. <br />Item 3. The present configuration of Bull Seep Ditch is shown on Exhibits <br />No. 2 and 3. To date, gravel mining operations have not affected the <br />' configuration of this channel to any significant degree. Exhibit No. 4 <br />shows the final configuration of graver lakes after Mobile Premix Company <br />has completed their mining operation on the property. Bull Seep will <br />' flow into the lakes along the south property line and exit the lakes along <br />the north property line. <br />' In order to assure natural flow into <br />exit, the present thalweg (low point <br />Flow into Bull Seep will, therefore, <br />fluctuation of the lake levels. The <br />' natural ground-water fluctuations, s <br />from that portion of Bull Seep lying <br />Bull Seep at its north property line <br />in channel) elevation should be maintained. <br />vary in accordance with the natural <br />lake levels will in turn vary with <br />Corm run-off, and other contributions <br />south of the property. <br />' Item 4. Field surveys provide sufficient evidence that the Ferguson wells <br />are hydraulically connected to the area ground-water system. The water <br />level in the wells should fluctuate in relation to the ground-water variations. <br />' As a point of interest, it was determined that the water level elevation <br />in Ferguson Well No. 1 is the same as the water elevation in the existing <br />gravel lakes (see Exhibit No. 3 for location of well). Mobile Premix <br />Company is planning to mine gravel in the "wet". This means that there <br />' will be no requirement to dewater. Therefore, it is anticipated that <br />ground-water elevations in the area will continue to fluctuate naturally <br />with no adverse effects from the mining operation. Should water level <br />29 <br />_' <br />