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d) Fertilization <br />The Contractor shall fertilize all shrub areas four (4) times per year in <br />March, June, September, and December using JTM Nutrients Complete 8- <br />2-4 soil conditioner plus NPK slow release fertilizer at a rate of eight (8) <br />pounds of actual nitrogen per 1,000 square feet. <br />4. Tree Care <br />a) Height/Quality of Pruning <br />In July and August of each year the Contractor shall routinely Class 1 <br />prune all trees up to a height of fifteen (15) feet. All trees within the <br />scope of work shall be maintained to keep the natural integrity and shapes <br />of the trees. Pruning shall be accomplished in a manner that will ensure <br />that each individual tree is Class I pruned as set forth in the City of Santa <br />Ana Tree Pruning/trimming and Stump Removal Specifications (see <br />Attachment 8). In addition, the Director may require the Contractor to <br />remove or prevent encroachment of trees into the public right of way <br />where the tree blocks vision or is considered undesirable. Low branches <br />overhanging sidewalks shall be trimmed to a height of nine (9) feet above <br />finish grade. Young trees needing pruning/trimming, training, and <br />shaping to develop caliper and a strong structural framework may have <br />low branching laterals and or appropriate sucker growth. <br />b) Staking, Tying and Guying, <br />All trees requiring staking shall be securely staked at all times with stakes <br />and rubber cinch ties approved by the Director. Rubber hoses and wire <br />are not permitted ties. All stakes shall be set perpendicular to prevailing <br />winds unless designated otherwise by the Director. Tree stakes shall also <br />be set a consistent distance away from the trunk of the tree (minimum six <br />(6) inches) to reduce abrasion and cell elongation. The tops of all tree <br />stakes shall be removed approximately three (3) inches above the highest <br />tie to reduce abrasion of main or lateral branches of the tree. <br />c) Mulching of Bare Areas <br />In designated tree ring areas where bare soil is visible the Contractor shall <br />apply Aguinaga Black Forest Floor Mulch or approved equal size 0" to 1 <br />%i", '/z" thick minimum every other month starting in January during the <br />third week as necessary to maintain uniform and complete coverage. <br />Mulch is to be maintained within its boundaries. <br />15