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during the nesting season, a focused survey for active nest sites shall be conducted 15 days prior to beginning construction and if nesting birds are found, a fenced buffer area will be established around the nest and shall be maintained until the young have fledged. Outside the breeding season, no pre- construction breeding bird survey should be necessary for other nesting birds 6. San Francisco Dusky- Footed Woodrat Although woodrat nests were not observed during the surveys, pre- construction woodrat nest surveys will be conducted 15 days before construction begins. All active woodrat nests that would be directly impacted will be flagged and avoided if feasible. If avoidance is not feasible, the nests shall remain undisturbed until the young mature and leave the nest. The nest material will then be moved to the suitable, permanent natural areas of the site 7. Roosting Bats Although no potential roost habitat was observed during the surveys, pre construction bat roost surveys will be conducted 15 days before construction begins. A combination of visual surveys and acoustic detection equipment will be used at each potential roost from one hour before sunset, to two hours after sunset. If an active bat roost is observed, a buffer will be established and maintained around the site until earthmoving activities are completed or until September. 8. Trees Based on the four -lot development, a total of 67 trees including 34 Heritage trees are potentially affected by development due to the construction within the four building envelopes, realigning the entrance driveway and widening a portion of Foothill Road for a right -turn lane to the project, extending a water line, and extending the service driveway to Lot 3 and Lot 4. Potentially affected will be buckeye, oak, and sycamore species varying in diameter from 6 inches to 27 inches and varying in health from good to poor. The oak woodland areas outside the designated building envelope areas of the four lots of this development are not quantified. These areas will be covered by deed restrictions recorded with the parcel map. Each building envelope is subject to site specific design review where the placement of structures will be reviewed towards tree preservation. The removal of an existing tree is subject to the review and approval of the Community Development Director. If a native /non- native tree, heritage /non heritage size within the building envelope is to be removed for site development, the following mitigation program shall be followed: Plant three, 24 -inch box -size trees native specimen trees for each Heritage tree to be removed and one, 15- gallon -size tree for each non Heritage tree to be removed. Pay to the City's Urban Forestry Fund a sum not to exceed the estimated value of the tree to be removed provided with the design application(s) for the site. The replacement trees will be planted in the areas A -1 through A -5 on the conceptual tree re- planting plan shown on Figure 15, on the following page, to Item 6.b., PUD- 87- 19 -03M Page 31 of 37 April 28, 2010