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Fj C) Any potential adverse impacts to Air Quality are mitigated by Conditions of Approval in KRC's Authorities to Construct and F; Permits to Operate as imposed by the San Joaquin County Air Pollution Control District. KRC expects that future operations will continue to be regulated by permits already issued. No Fadverse environmental changes or impacts will occur. 5.3 Surface and Groundwater Hydrology F5.3. 1 Surface Water There are numerous manmade reservoirs throughout the 1100 F acre property. Two ponds in the northern half are used primarily for stock, and appear to be remnants of past cattle ranching. Two small ponds in the eastern half of the property are of more recent construction and were used in conjunction with fowl E (chicken) waste drying and processing operations. Each of these surface water bodies is discussed below. ! Several small creeks drain the 1100 acres, all of which are intermittent, or dry during the summer months. Analysis of the topography of the site shown in Figure 2 indicate that storm water from Tracts I, III, IV, V, VI and of II drain into the creek that exits the property at the northwest corner. A second creek drains a small portion of Tract II and VII, and departs the ^{ site at the northern boundary of Tract II. A third creek passes ` along the extreme northeast corner of Tract VII which drains the northeast corner of Tract VII. F Of the three drainages listed above only the first (the stream which discharges to the northwest corner) drains portions _ of the area that are currently in use by KRC-Aggregates. This stream also drains the adjacent Darwin Farms, as well as portions i of the property currently used by Darwin Farms for fowl waste drying operations. Historic dredging for gold occurred within this stream northwest of the KRC boundary and is shown on ';Figure ' 2 as dredge tailings. As stated above, the two ponds in the northern half of the property provide water to livestock. The pond located in the k northeast portion of Tract II does not receive surface water runoff from the existing KRC operation. It may receive runoff f from the adjacent Darwin Farms operations located south of Tract VII. The pond in Tract V does not appear to receive runoff from the sand and gravel operations. The water in both of these ponds appeared murky due to cattle in the area. No odors or sheens were observed. All storm water is contained within the mine area. Storm water is either diverted around disturbed areas or is confined within the quarry pit. Pumps are utilized to move storm water from the open quarry to holding ponds used to settle out fines r- from the processing plant. Storm water is then used in the pro- cessing of aggregates thereby reducing the amount of groundwater required to supplement process water. KRC-Aggregate's storm water pollution prevention plan may be found in Appendix 11. 1. P11KRC' s Spill Prevention Plan is provided as Appendix 11. 2 . 1KRC Aggregate, Inc. I - 2 - April 1, 1994 }