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c) Mulching of Bare Areas In all groundcover areas where bare soil is visible or where the groundcover is thin so the soil is visible, the Contractor shall apply AG Organics, Inc. AG203 Nutri Mulch 2"-3" or approved equal, '/z" thick minimum quarterly (every third week of January, April, July, and October) and as necessary to maintain uniform and complete coverage. Mulch is to be removed and completely replaced with fresh mulch every July. d) Fertilization The Contractor shall fertilize all shrub areas once per year (first week in April) per the City's agronomic plan (Attachment 4). 4. Tree Care a) Height/Quality of Pruning In the first week of August of each year the Contractor shall routinely Class 1 prune all trees up to a height of fifteen (15) feet. All trees within the scope of work shall be maintained to keep the natural integrity and shapes of the trees. Pruning shall be accomplished in a manner that will ensure that each individual tree is Class I pruned as set forth in the City of Santa Ana Tree Pruning/trimming and Stump Removal Specifications (see Attachment 3). In addition, the Director may require the Contractor to remove or prevent encroachment of trees into the public right of way where the tree blocks vision or is considered undesirable. Low branches overhanging sidewalks shall be trimmed to a height of nine (9) feet above finish grade. Young trees needing pruning/trimming, training, and shaping to develop caliper and a strong structural framework may have low branching laterals and or appropriate sucker growth. Contractor shall remove hangers under 15" and fallen limbs 80 lbs. or less. b) Staking, Tying and Guying All trees requiring staking shall be securely staked at all times with stakes and rubber cinch ties approved by the Director. Rubber hoses and wire are not permitted ties. All stakes shall be set perpendicular to prevailing winds unless designated otherwise by the Director. Tree stakes shall also be set a consistent distance away from the trunk of the tree (minimum six (6) inches) to reduce abrasion and cell elongation. The tops of all tree stakes shall be removed approximately three (3) inches above the highest tie to reduce abrasion of main or lateral branches of the tree. c) Mulching of Bare Areas In designated tree ring areas where bare soil is visible the Contractor shall apply AG Organics, Inc. AG203 Nutri Mulch 2"-3"or approved equal '/2" thick minimum quarterly (every third week of January, April, July, and October) and 21 25H-31