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Mr. Dolan then displayed slides of a series of sections of the possible roadway across the side of the hill that leads up to Sunset Creek Lane, indicating that there is a Summary Sheet at the end of these options which gives some information about the quantities of grading involved. 1. Option A is a 32 -foot roadway with an eight -foot wide trail and shows the existing as well as the proposed grade. There would be a substantial amount of fill on the bottom side of this particular section of the roadway. Further along the road, the grading flips and ends up with grading above the road; and farther down the roadway, there is a cut above the roadway where the grading would occur. 2. Twenty- Four -Foot Wide Alternative is a narrower road. The standard roadway is 32 feet wide; and there is an opportunity here to narrow the roadway to 24 feet because there is really no need to provide parking on this street. The grading pattern would remain above in one location and below in the other, but the grading is not quite as extensive and would have a little bit less impact on the hills. 3. Option B is also done at 32 feet and reduces the amount of grading by using retaining walls. The grading is cut down a fair amount, but there is the approximately ten -foot high retaining wall, exposed above on one end and below on the other. Mr. Dolan then presented and explained the Summary Sheet: • Length of the Road. This obviously does not change in any of the options; the land area for the two Option A- Section A, Option A- Section B are over two acres; Option A without the retaining walls is almost three acres at 2.7 acres, which is almost cut in half with the retaining walls in Option B. He indicated that an estimate of an acre would be the size of a football field. • Area to be Graded. The amount of area that would need to be graded within the 25- percent slope area is about the same for Option A and the 24 -Foot Road Option at 1.7 acres and 1.6 acres, respectively. This goes down to 0.8 acre without the retaining wall. • Fill in the Creek. The fill to be put in a culvert to cross the creek is generally about the same for the three Options. • Heritage Trees. The number of Heritage trees to be removed goes down from about 20 to 12 with the use of retaining walls. • Earthwork. The smallest amount of cut - and -fill would be in the 24 -Foot Road; the others are roughly the same. This sounds like a lot at about 11,000 or 12,000 cubic yards, but this is relative and is not as much as was moved around in other projects, such as the Chrisman project. • Number of Truck Trips. The intent, if the construction of the road is incorporated into a project approval, is to actually use this volume of dirt that would need to be moved on the site, that is, within the project, so there would be less of an impact than was first thought. • Maximum Depth of Cut. This ranges between 12 and 9 feet. The maximum depth of fills is consistent at 18 feet. • Maximum Height of Walls. Option A and the 24 -Foot Road Option gives the height of a retaining wall at the culvert, about down into the creek surrounding PLANNING COMMISSION MINUTES, August 26, 2015 Page 3 of 43