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3. The compost is separated from the wood chips using a screening process. The <br />wood chips are recycled and used in future "batches" of compost. <br />Mixing and turning of the windrowed piles will be preformed by an end loader or motor <br />grader. Screening will be accomplished with a diesel powered screen. If more rapid <br />processing of the biosolids becomes necessary, specially designed and built <br />containerized composting vessels will be used to raise the temperature of the compost <br />mixture and thereby increase the speed of the composting process. <br />Compost will be made available for revegetation at the mine site. Compost that is not <br />used by the mine would be backhauled using the same dump truck to the WW'rP plant <br />site for use by the Town of Gypsum or for sale to landscape contractors. Currently the <br />Town is processing approximately 100 dry metric tons (DMT) of sludge per year. In the <br />future, when the WWTP is at or near capacity, it is estimated there will be 200 DMT per <br />year to be processed. There are no current plans to accept waste from other sewage <br />treatment plants. Traffic generated for the composting facility is not to exceed: <br />15 end dump truck trips/month <br />60 car/pickup trips/month <br />It is anticipated that the site will be accessed by city employees approximately once per <br />day, five days per week, between 7 AM and 5 PM. There will be some days when the <br />site is not visited. Access between the Town's WWTP and the proposed composting <br />site would be primarily along Porphyry Road, Highway 6 and Trail Gulch Road. The <br />distance between the two sites is approximately 3.2 miles. The route is shown on <br />Figure 1. <br />The storm runoff related to the proposed site will be handled in accordance with the <br />drainage study for the site, which is attached for your reference. <br />If you have any questions, please contact our office at (970) 945-5700. <br />Very truly yours, <br />Zancanella & Associates, Inc. <br />Thomas A. Zancanella, P.E. <br />Attachments <br />cc: Steve Onorofskie <br />Z:\93503\93503.79 Composting\MLRB letter.doc <br />