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Site Description <br />The small area exemption areas consist of three areas as briefly <br />described below and shown on Exhibit 7 -7, Surface Hydrology Map. <br />A sketch of each area is shown at the end of the SEDCAD printout <br />attached to this section. <br />Old Boneyard This area contains approximately 2.5 acres of <br />disturbed land. Subsequent to the mining of this area in the <br />late 60's it has been used to store salvageable parts and <br />equipment. It was the sole storage area until the new boneyard <br />was constructed in the early 1980's. Runoff is diverted around <br />the old boneyard and therefore the only runoff from the area is <br />that which falls as a result of direct precipitation. <br />• NOR 006603 q9 <br />7- 6 -7 -2a Revised 12/02/93 <br />TABLE 7 -6 -7 -1 <br />• <br />Snowmelt Snowmelt <br />Rainfall <br />03 -23 -93 04 -13 -93 <br />09 -24 -93 <br />A. <br /><0.4 No flow <br />No flow <br />Old Boneyard <br />B. <br /><0.4 NS <br />NS <br />New Boneyard East Ditch <br />C. <br /><.0.4 <0.4 <br /><0.4 <br />New Boneyard Northwest Ditch <br />D. <br /><0.4 NS <br />NS <br />Office South Ditch (also contains flow from pasture <br />area to the <br />east of office <br />E. <br />NS <0.4 <br />35.0 <br />Office North Ditch <br />F. <br />NS <0.4 <br /><0.4 <br />New Boneyard - culvert under elec. shop access <br />• <br />All values are settleable solids in ml /1 <br />NS = not <br />sampled <br />Site Description <br />The small area exemption areas consist of three areas as briefly <br />described below and shown on Exhibit 7 -7, Surface Hydrology Map. <br />A sketch of each area is shown at the end of the SEDCAD printout <br />attached to this section. <br />Old Boneyard This area contains approximately 2.5 acres of <br />disturbed land. Subsequent to the mining of this area in the <br />late 60's it has been used to store salvageable parts and <br />equipment. It was the sole storage area until the new boneyard <br />was constructed in the early 1980's. Runoff is diverted around <br />the old boneyard and therefore the only runoff from the area is <br />that which falls as a result of direct precipitation. <br />• NOR 006603 q9 <br />7- 6 -7 -2a Revised 12/02/93 <br />