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<br />to contaminate Arequa Gulch. For the record, we would appreciate confirmation our <br />understanding of acceptability for use in both the underdrain and the underdrain pipe bedding <br />material. <br />I hope that this letter and the Attachment have satisfied the Office's concerns related to the <br />mechanical and chemical properties of the granodiorite that will be selectively borrowed and <br />used as underdrain fill and as bedding for the underdrain piping. If you have any questions <br />or comments please don't hesitate to contact me. We sincerely appreciate the large amount <br />of time you have spent assisting us as well as the time spent by all on the site. As you are <br />aware from your recent visit and from discussions with others of your staff, we need <br />approval for the use of this material as soon as is possible because lack of material will delay <br />installation of the underdrain scheduled to begin quite soon. <br />Hardaway <br />Environmental Affairs <br />Attachment: Point Load Summary <br />FILE: CC&VSTIP.002 <br />4 <br />