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New Horizon TR 80 Permanent Culverts <br />Rules 4.03.1 and 4.03.2 Culverts <br />The following questions relating to permanent culverts in the New Horizon Permit originate from <br />DRMS review of the TR80 submital: <br />Table 2.05.3.0-3 Permit Area Culvert Designs, C130 — C181 and associated revised pages 35-38 <br />Average Land Slope is characterized for each of the culverts C134-137. <br />1. Please clarify, for each of the above mentioned culverts, what slope that culvert lies at and <br />include that information in the culvert descriptions. <br />2. Please also include tailwater and max headwater ft. for Culverts 134-137. <br />3. Please explain how maximum headwater elevation is arrived at. <br />Table 2.05.3(3)-3 describes culverts C130 through C181. All culverts are described as CMP <br />(corrugated metal pipe) with a specified diameter. DRMS finds that culverts 134 — 137 are <br />described individually on pages 35 through 38 as HDPE (high density polyethelene pipes). Also, <br />Bureau of Public Roads attachments (pgs 23 — 30) specify C>M> Pipe (corrugated metal pipe) <br />while revised pages submitted call out HDPE pipe. <br />4. Please clarify culvert materials for said culverts and update table 2.05.3(3)-3 as needed. <br />At this time DRMS is unable to verify pipe designs as submitted for culverts 134-137. DRMS <br />anticipates being able to verify pipe sizing once the above mentioned variables are provided. <br />New Horizon Technical Revision TR80 Prepared by: R. Reilley <br />Date: August 2017 <br />