AGENDA PACKET - Laserfiche WebLink

City of Pleasanton—Villages at the Quarry Project 15183 Consistency Checklist Consistency Checklist 93 compatible is probably the single most effective measure that can be taken to assure health of the trees. Mulch should gradually recede in depth from four inches to zero within three feet of the trunk, as to not place mulch directly against tree trunks. Decorative mulch may be used instead of the natural mulch, but is far less effective in maintaining tree health, and is typically much more expensive. COA BIO-4 Valley Oak No. 581 The property owner shall discuss potential impacts to Valley Oak Number (No.) 581 and other trees immediately south of the property boundary with the Project Arborist. To help assure safe retention of this tree, all grading and construction work within the Critical Root Zone (CRZ) shall be performed under Project Arborist supervision. Adhere to the following guidelines to further reduce root loss within the CRZ and overall impact to trees: • Prior to grading in this area, an inspection trench shall be dug, either by hand or Airspade 5 at the furthest extent of excavation required for excavation and construction to expose roots critical for health and overall tree stability. The approximate locations of these trenches will be shown on the site map in green on future addenda to this report and will be finalized in-field by the Project Arborist. • Any trenches that must remain open for over 24 hours during the dry season from April to October shall be covered with three layers of burlap and kept moist until trenches are backfilled. • The Project Arborist shall be on-site to document the size, number, and location of roots impacted or removed from these trees. • Roots up to two inches in diameter may be severed cleanly with a reciprocating saw just behind the face of soil. 5 An Airspade is a specialized excavation tool that uses high-pressure air to break up and remove soil with minimal damage.