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- 4- <br />DISCUSSION AND RECOMf-tENDATIONS ~~ <br />~'4Je understand the processing will result in approximately 50,000 cubic~~ <br />yards of materials to be disposed of on an annual basis_ ~{Je anticipate that <br />materials will be trucked to the disposal area and dumpzd 'in small piles on <br /> <br />an irregular basis. The present anticipated type of processing will result <br />in essentially a dry waste material. We understand that the disposal site <br />must meet the requirements of several State and Federal agencies. Speci- <br />fically, these requirements indicate the location must be such that it does <br />not adversely affect water quality, water flow or vegetation, create public <br />health hazards or cause instability in the disposal areas. The site of the <br />preposed disposal site is probably the best available area. It is located <br />on a relatively high site previously occupied by a gravel mining operation. <br />{eater flow into the area will essentially be intercepted by diversion ditches F~ <br />and other surface facilities uphill of the site, and the disposal area will ~_ <br />be subject only to water from rainfall which would fall directly within the <br />disposal area. `The foundation soils which exist within they disposal area <br />.consist of a dense sequence of sandstones and shales which will be virtually <br />incompressible under the anticipated loads of embankments up to 50 feet in ;` <br />height. The proposed waste embankment construction is in a. naturally stable <br />area and the additional loads imposed by the embankment will, in part, re- <br />place materials previously excavated by the gravel operation. To meet the <br />requirements of the various regulatory agencies, as well as to reduce conslruc- <br />lion and maintenance costs to a minimum,~e recommend the following procedure. <br />~1. The proposed disposal site should be stripped of all sand and <br />gravel down *_o the surface of the se dimzntary bedrock. <br /> <br /> <br />