Contractor shall notify the city no sooner than sixty days and no later than ten days before any tree work is commenced unless the tree work is required by an emergency.

Prior to commencing any tree work, the city representative and contractor shall agree upon a work schedule. Any changes in this schedule must be approved by the city; the contractor will give the city twenty-four hours notice of said changes. Maintenance and operation of equipment shall be performed only during the time periods as follows:

Exceptions to the above schedule may be granted by the City upon demonstration of the necessity for such deviation. Emergency work directed by the City shall not be impacted by the above scheduling restrictions.

Contractor shall comply with the State of California and Cal-OSHA Safety Rules and Regulations and American National Standards Institute (ANSI) Z133.1 standards. Contractor shall supply all delineation, signing and clothing as required by the State of California Department of Transportation.

Contractor shall set up traffic controls to assure a safe and proper lane closure is provided for the work area when work is done on public streets. If work along a public right-of-way will require the closure of a traffic lane, the contractor shall notify the city at least twenty-four hours in advance and comply with the procedures outlined in the Cal-Trans Manual (page 5-48, figure 5-9, Typical Lane Closures). Contractor shall also obtain a copy and observe the city's traffic controls which outlines the normal requirements to close down a traffic lane for work. Contractor shall also accept additional direction or requirements from city staff when unusual conditions may exist or a hazard is identified.

The contractor shall exercise precautions as necessary when working adjacent to aerial utilities and comply with clearances as defined by current and applicable ANSI standards. In the event that aerial utility wires present a hazard to the contractors personnel or others near the work site, work is to immediately cease and the appropriate utility company notified. Work shall then commence in accordance with instructions from the utility company.

Any new planting of trees, shrubs and bushes shall be performed in a manner that does not interfere with overhead utility installations.

All work shall conform to current and applicable International Society of Arboriculture (ISA) and American National Standards Institute (ANSI) standards. In all cases the city's representative shall have complete and sole discretion in determining conformance and acceptability of trees trimmed and/or removed.

All work is to be done by personnel who have been trained according to ISA accepted tree care standards. Work is to be supervised by an experienced ISA certified arborist.

All tree pruning and/or removal is to be done by an experienced ISA certified tree worker and/or an experienced but non-certified tree worker under the direct supervision of one of the aforementioned ISA certified personnel. Direct supervision requires that the ISA certified arborist or certified tree worker be present on the job site and observing the work of a non-certified employee.

Trees being removed shall be done according to ANSI safety standards and provide for the safety of workers, traffic, city residents and property.

All trees that have been topped, trimmed or mutilated beyond salvageability shall be removed at contractors expense, and such removal shall include removal of the complete root system so that future plantings can be accomplished without complications.

Any trees which require severe pruning that leaves the survivability of the tree in question shall be removed at contractors expense along with the complete root system.

All stumps shall be ground to twenty-four inches below grade and all roots larger than three inches in diameter shall be removed. Holes shall be backfilled with native soil. Compaction shall be achieved with the use of water and the finished grade shall be two inches above natural grade. If imported unclassified fill is used to backfill holes, the city must grant written approval and be notified far enough ahead of time to allow for soil testing. Any landscape and/or landscape material damaged during stump removal will be replaced by contractor and approved by a city representative.

All visible surface roots are to be removed to eight inches below grade and voids filled in accordance with the section immediately above.

Contractor shall remove all cuttings and debris from the work area on a daily basis. All dump/disposal fees shall be included in the bid proposal price.

Contractor shall dispose of all appropriate green waste removed from landscape areas at an approved facility where green waste is converted to a usable soil amendment or energy.

Contractor shall submit, at the end of the encroachment permit period, to the city representative, a listing of the landfill and/or energy site(s) used and a gross weight slip from the facility.

Should any structure or property, including landscape, be damaged during permitted or contracted tree work, the persons conducting the work shall immediately notify the proper owners or city representative. Repairs to property damaged shall be made, at the sole cost and expense of the responsible party, within forty-eight hours. Repairs on private property shall be made in accordance with the appropriate building code under permits issued by the city.

Any damage caused by the permitted or contracted persons shall be repaired or restored by them at their expense to a condition similar or equal to that existing before such damage or injury, or they shall repair such damage in a manner acceptable to the city. Special attention is drawn to sprinkler systems on all city property and private property, and the need to avoid damage or to repair damage to sprinkler systems as soon as possible.