Laserfiche WebLink
In order to aocamrodate the relocation of the sump, the PY, ~ ~ r~ ditch lPa~ i m <br />to the slIIl~ Wlll be renovated tO drain lIlto the new Slm~. III Order mi nimi Ze <br />leakage out of the bottom of the ditch it will be lined with an old conveyor <br />• belt, oalgaacted clay or similar material. <br />The new su1~ will be excavated aryl it is anticipated a clay liner will be placed <br />in the bottom of the sump. The material excavated fran the sump will be <br />stockpiled on the pad for use in final reclamation of the site. <br />The sump will drain into existing collection ditc3l aryl into sediment Pond B. No <br />additional drainage is being added to Porn B. 'lYlerefore, the sizirlq of the pond <br />is adequate for its interned use. <br />The existing 18" culvert on the souttn~st end of the site will be replao~ with <br />12" X 24" bax culvert. The ccceas sectional area of the 12" X 24" box culvert is <br />288 square inches, and the cross sectional area of the existing culvert is 254 <br />square inches. The box culvert's additional area will adequately convey the <br />drainage older the tracks to Treatment Facility B. The box culvert will be open <br />on the top to allow for maintenance of the structure. 7.YIe bax advert will be <br />placed at the same grade as the 18" culvert it is replacing. <br />• An additional 12" X 24" box culvert will be placed underneath the track adjacent <br />to the south enci of the reclaim tunnel. 'Ihe only drainage entering the culvert <br />will be fran the reduced slope area, arcl as such, the culvert is more than <br />sufficient. The reduced slope area is less than 0.5 acres. <br />Finally, a French drain will be installed in the road leading into the reclaim <br />tunnel. The location of the drain has beer shown on Permit Renewal Map No. 5. <br />ZYIe French drain will be constructed of 4" PVC, gravel and filter wrap. This <br />will drain into the ditch leading into Pend B. <br />The above facilities has been transferred to 'iWentymile Opal Oongaany and TOC will <br />be responsible for permit and reclamation requitraerlts. These facilities have <br />been removed frwtt Permit Rellehral Map 5. <br />A lobe and fueling facility is located adjacent to the tipple 2 facility. During <br />December, 1988 the urdergrourrl diesel storage tank was removed frcan service, and <br />• the site was sc3leduled for further investigation orloe field oollditions allowed. <br />This investigation began on April 3, 1989, and will continue until it is <br />completed. <br />TR 91-30 Permit Renewal 780-30-2 (b) Revised 02/11/91 <br />