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<br /> <br />4. The sludge spraying equipment was trailer mounted and <br />not readily movable by one person. Efforts to maintain <br />the dump surface while the equipment was in place created <br />more house keeping problems. <br />A. The first problem was that the pump area soon became <br />lower than the surrounding dump, thus creating <br />a pond of sewer sludge from the sprinkler <br />reversing men=hanism. <br />B. The second problem was that the eax•thmoving <br />equipment used for dump maintenance could not <br />effectively work the entire dump face which <br />ultimately resulted in soft spots where the spraying <br />equipment had been located. <br />5. Wind direction and velocity indicated a need for frequent <br />relocation of the spraying equipment. Hourly relocation <br />would have been required. <br />In summary, the sludge spray covers the dust very effectively. <br />Wind, dump height, sprayer configuration and restricted access to <br />all areas of the dump create problems. <br />Testing pr~;cedures .s re continuing with alternate methods of <br />dispersing the sewer sludge to overcome the above problems. <br />At this time the most effective method is. having the discharge <br />pipe on the dispensing truck arranged to extend approximately <br />foux• feet beyond tlxe left side of t!ie tru~~k. The truck moves <br />pax•allel to the edge of the dump as it dispenses the sludge. This <br />allows the sludge to run down the dump slopes and out over most <br />of the dust in the area. <br />Dust is currently bei:xg dumped over a higher part of the dust <br />dump area to decrease the maintenance requix•ements. This dump is <br />in a "U" shape to mitigate wind problems. <br />A spray nozzle capable of vertical movement secured to the <br />dispensing truck whir_h would move around the perimeter of the <br />dump is being considered. <br />A letter on this subject from Mr. Phil Hegeman of the Colorado <br />Department of Health to Mr. George Medaris of the Fremont <br />aanita+.ion District has been attached. <br />Sineerel <br />ay a'terson <br />Quarry Supervisor <br />