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<br /> - <br /> Permit Aoolication No. 06.036 Amities Construction, loc. <br /> 8. Preliminary Grading and Erosion Control Plan prepared by Pioneer . <br /> Engineering, dated March 23, 2006, received March 24, 2006. <br /> 9. Swppp prepared by Pioneer Engineering, dated March 23, 2006, <br /> received March 24, 2006. <br /> 10. RCWD Perrnjt Files 92-206, 96-105 and 05-092. <br /> Findings: I. The proposed project entails subdivision of 2 lots into 4 lots and <br /> removal of an existing home. The site is tributary to the E2 Wetland <br /> located north oftbis site and south of County Road E2. <br /> 2. Under existing conditions, runoff from the site discharges to the <br /> wetland along the west property boWldary. The proposed plan I <br /> , <br /> includes an infiltration basin that will capture runoff from the area to <br /> be developed before discharge to the wetland. This infiltration basin <br /> satisfies District rate and infiltration requirements for an assllffied <br /> infiltration Fdte of 0.25 inches/hour (B-soils). However soil borings <br /> taken near the infiltration basin are required 10 investigate feasibility <br /> of infiltration and adequate separation between t>ottom of the BMP <br /> and the groundwater table (at least 3 feet). A revised Grading Plan is <br /> required including design details of proposed OUllet and identifying . <br /> an Emergency Overflow (EO F) spillway sufficiently stabilized to <br /> convey flows greater than the I DO-year critical storm evenl for the <br /> infiltration feature. <br /> The total amount of impervious area is less than an acre and <br /> infiltration BMPs have been incorporated to the design, and <br /> therefore. permanent sedimentation and water quality ponds are not <br /> required. <br /> 3. 'me submitted wetland delineation identifies one wetland onsile. <br /> The District Wetland Specialist has reviewed and approved the <br /> submitted delineation. There are no proposed wetland impacts. <br /> 4. There is no applicable regulatory Hood elevation for this site and the <br /> infiltration basin overflow elevation is 883.0, 10-ft below the <br /> proposed low floor elevation (893.0), thereby satisfying District <br /> freeboard requirements, <br /> 5. The erosion control plan includes silt fence downslope of disturbed <br /> areas, riprap at slormsewer outfall, a rock construction entrance and <br /> a revegetation implementation schedule. A revised grading plan is <br /> required including construction details of infiltration feature EOF, <br /> revegetation specifications and an acceptable calch basin inlel <br /> . <br /> Emmons & Olivier Resources, lnc, - :; . 4/7/06 <br /> :::::~ I~C(.c ~~~t; <br /> i:~:.~ ?~~(,,-~.C:C:V <br />