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Halllrwin Constructionnepany <br />La Poudre Pit Permit Technical Revision Permit No. M-83-090 <br />Technical Revision <br />The following revisions to Hall Irwin Construction Company's La Poudre Pit Permit No. <br />M-83-090 are requested: 1) include a riprap spillway between the two eastemmost ponds, <br />and 2) add a weed management plan. <br />Damage caused by Spring flooding made it apparent that a spillway is necessary between <br />the two eastemmost ponds. Damage to [he berm comiec[ing the ponds exposed a buried <br />gas pipeline owned by Sinclair Pipeline Company. The spillway is necessary to protect <br />both the pipeline and the berm from further damage in the future. A design report for the <br />spillway is provided. <br />In response to the DMG's request for a weed management plan, equipment and personnel <br />are in place. Mechanical means, including mowing and disking, will be used as the first <br />measure of attack, after which herbicides will be used to control noxious weeds where <br />necessary. Hall Irwin has committed to implementing this weed management plan. <br />RE~EI~/~.,,. <br />N~V ~ , <br />a~~~~ X999 <br />4 <br />November, 1999 <br />