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to support heavy construction equipment. The bridge will be left in place permanently to <br />provide long term access to the portal area. The bridge was installed in 1988. Over the <br />years the wooden deck has deteriorated. As of late 1999, the bridge is restricted to, and <br />will be maintained for foot or ATV traffic. <br />Drawing number D-2-5 shows how the seepage is being controlled and piped to the <br />treatment ponds. <br />SEEPAGE TREATMENT <br />A sample of flow being intercepted and piped to the treatment ponds was taken on May <br />9, 1988 and results of the analysis of the sample are as follows: <br />• pH 6.8 <br />Temperature ° C 14 <br />FJC mmhos/cm 4.03 <br />Dissolved Solids mg/I 2810 <br />Suspended Solids my/I 2180 <br />Recoverable Iron mg/I 120.6 <br />Recoverable Cadmium mg/I 0.00090 <br />Oil and Grease mg/I <5.0 <br />Flow gpm 30 <br />Two separate titration tests were pertormed on the above sample to determine how to treat <br />this water. The pH of the water was <br />4-66e 5/01 <br />