Hayward Park Neighborhood Tree Pruning

2026-11-03

The Contractor shall furnish all labor , equipment , materials , tools and supervision to perform tree maintenance as described here and in the tree list including , but not limited to , the following : Visually inspect each tree prior to climbing or pruning Notify City staff of any imminent hazards or extreme risk tree situations that cannot be mitigated by pruning Pruning street trees in accordance with ANSI A300 Tree Management Standards - Part 1 Pruning , ISA Best Management Practices , and all specifications in the “ Pruning Specifications ” section of this document Site clean - up and removal of all debris produced during pruning / removal operations . Trees listed for pruning include 500 trees from a variety of species throughout the Hayward Park neighborhoods . The trees shall be pruned to the specifications listed below and in the included tree list . The overall specifications are as follows unless otherwise noted : Reduce crown 6 - 9ft back to strong laterals Pruning will occur in the outer 25 % of the canopy . Pruning of live branches should be between a diameter of two and four inches . No more than one quarter of the canopy shall be removed . Clean dead branches one inch in diameter and greater . Mitigate hazards not visible from the ground . Raise low limbs to approximately 10 ft over sidewalks and 15ft over the road . Clear surrounding structures by 3 - 5 ft . Pruning Objectives and Specifications The objective for pruning street trees is to achieve a structurally sound ; low risk condition including sound structure , live branches , removal of chronic disease , and clearance for access and traffic control visibility ; uniformly shaped tree crown ; while retaining as large a foliar crown size and leaf area as possible . Trees shall be pruned to achieve the objective based on the anticipated mature tree size , site conditions , available space , and current tree conditions . Branches to be removed shall be selected to promote or retain a primary leader , acceptable branch aspect ratios , and consideration of the branch origination point as related to the portion of the crown the leaves occupy . The type of pruning cut to be performed shall be considered : Branch removal cut – removal of a whole branch back to the parent branch or trunk leaving an intact branch collar ; Reduction cut – a reduction of the length of a branch back to a lateral branch of equal or smaller diameter and large enough to assume the apical dominance ; Heading cut – cutting a small twig back to a bud , cutting a branch back to a node without a lateral branch , or cutting a branch back to a lateral branch too small in diameter to assume apical dominance ( less than 1 / 3 the diameter of the parent branch ). Whenever reasonable , branch removal cuts and reduction cuts shall be preferred over heading cuts . Unless directed by the City to avert a high - risk situation , trees shall not receive a majority of heading cuts . Defects that will remain after pruning operations shall be reported to the Managing Arborist or Tree Maintenance Specialist . Any structural weakness , decayed trunk or branches , split crotches or branches , shall be reported as soon as they are observed . If the detection of severe decay or split trunk or branches may change the assignment of pruning the tree , the pruning shall be stopped until the Managing Arborist / Tree Maintenance Specialist can review the findings and make a decision about the fate of the tree . Tool Sanitation - On all trees , including palms , known or suspected to be diseased , pruning tools shall be disinfected with a ten ( 10 ) percent chlorine bleach solution after each cut and between trees where there is danger of transmitting the disease on tools . Fresh solution shall be mixed daily . Weekly Work Summary – At the end of each work week , the Contractor shall email the Tree Maintenance Specialist , a detailed list of all work completed that week , including : number and locations of trees worked any issues encountered or unresolved major tree defects observed hazardous conditions observed work plan for the next week

California

2026-03-27