Laserfiche WebLink
<br />-2- <br />Section 3.0 entitled "Construction Plan" fails to present adequate <br />information regarding the exact nature of the earthwork being <br />proposed. The applicant should provide clarification regarding the <br />anticipated fan pad's cut and fill cross-section, the fill material <br />nature and source, the facial slope maximum height and facial angle and <br />the specific construction material placement and compaction standards <br />to be adhered with. This information should be provided for both the <br />operational and postmining configuration. <br />7. Using manning's equation, the <br />ditch is 4.4. feet per second. <br />velocity of 3.15 feet per seco <br />addition, no ditch shape or si <br />Please address these items. <br />flow velocity of the upland diversion <br />This does not achieve the design <br />nd stated in the application. In <br />de slope information was provided. <br />At present your request for a small area exemption appears reasonable. <br />~iowever, our experience with similar facilities shows problems with a <br />flat pad. These pads tend to impound water and cause muddy conditions <br />over time. We would suggest you grade the pad to drain to a berm or <br />ditch and run the water through a check dam/sump, silt fence or other <br />alternative sediment control measure. <br />The Division must issue a proposed decision on your ventilation technical <br />revision by January 28, 1985. Please provide your responses well before this <br />date to enable the Division to complete the review. If you have any questions <br />or would like to discuss the revision please contact me. <br />Sincere) ` ~ ~ _~ ~' <br />~j / i <br />~ ~ ~ i <br />~ / ~ /~ <br />Robert Liddle <br />Reclamation Specialist <br />RL/fw <br />cc: Jim Pendleton <br />Doc. No. 5953 <br />