2611.01 DESCRIPTION.
This work consists of furnishing and installing tree and shrub materials of the type, class, species, grade, and size specified in the contract documents. The requirements in Section 2610 shall not apply to this work unless otherwise stated in this specification. The Contractor has the option to use the provisions of Articles 2610.03, A; 2610.03, D; 2610.03, E; or 2610.03, F as a guideline for planting techniques to enhance survivability of plant materials at the Contractor's expense.

The contract period for this work is two growing seasons for all plants.

The Contractor shall initially plant all trees and shrubs and first year replacements between March 1 and May 15. The Contractor shall plant second year replacements between September 1 and September 30 for evergreens and between October 1 and November 30 for deciduous plants.

2611.02 MATERIALS.

A. Plant Materials.
All plants and planting materials shall meet the requirements of Section 4170.

B. Plant Substitutions.
For each time each species is requested for substitution a $250.00 price reduction will be charged.

When substitutions are made, the Engineer will price adjust downward. No participation in price increases will be incurred.

2611.03 CONSTRUCTION.

A. Plant Establishment Period and Replacement.
The plant establishment period will be the first two growing seasons. The establishment period will begin when the last plant of the initial installation is planted and all incidental work related to the plantings is complete.

The Contractor shall control competing vegetation in the entire mulched area throughout the contract period. The Contractor shall control vegetation in the mulch area by chemical methods. Chemical methods to remove vegetation must be applied by a Certified Pesticide Applicator - Category 6 (Right of Way).

Pesticide and herbicide used for competing vegetation, insect, or disease control shall be approved by the Engineer prior to application. The Contractor shall use all pesticide and herbicide in accordance with product label directions.

The Contractor shall replace all plants that are not in a live, healthy, growing condition at the end of each of the first two growing seasons. Replacement plants for the first growing season shall be planted the following spring. Replacement plants for the second growing season shall be planted in the fall of that year. Replacement plants shall be of the variety and size originally specified in the contract documents. The Contractor may salvage and reuse the original mulch for replacement plants. If the original mulch is not available, suitable, or salvageable for reuse, the Contractor shall place new mulch around the replacement plants. The Contractor shall be responsible for all replacement costs.

B. Inspection of Plant Materials.
The Engineer will inspect the plant materials, staking and guying, and mulch after the initial installation or on May 16, whichever comes first. This includes the inspection for size, number, location, alignment, and viability of plant materials; correct depth and area of mulch; and installation of stakes and guys as specified in the contract documents. The Contractor shall be responsible for verifying correct species and compliance with the ANSI Z60.1, American Standard for Nursery Stock.

In August of each year of the establishment period, the Contractor shall identify all dead plants with tie-on plastic flagging, all of one color, in a location that is easily seen.

The Contractor shall submit to the Engineer by August 30 of each year, marked copies of the plant location plan sheets showing the number and species of replacement plants required for each location for that year. The Contractor shall submit tabulations of the total number of replacement plants of each species on each plan sheet and also indicate the total number of replacement plants for the project.

The Contracting Authority will inspect the plant materials in the fall of each growing season. The Contracting Authority will verify, during this inspection, the number of living plants and determine if the correct species of plants were used.

The Contracting Authority will also inspect and verify any replacement plant materials after installation.

2611.04 METHOD OF MEASUREMENT.
Shrubs with the specified mulch will be measured by count of live shrubs installed.

Trees with the specified mulch will be measured by count of live trees installed.

2611.05 BASIS OF PAYMENT.
The Contractor will be paid the contract unit price for each Tree, Furnished and Installed in accordance with the contract documents.

The Contractor will be paid the contract unit price for each Shrub, Furnished and Installed in accordance with the contract documents.

Payments will be made in increments according to the following schedule:

A. After Initial Installation is Complete.
65% of the contract unit price placed quantity will be paid for all live plants of each size and variety installed with the specified mulch, and meeting the staking and guying requirements. This payment will be made after the initial inspection by the Engineer.

B. End of the First Growing Season.
Payment will be based on the total project's first year survival rate. Plants not in compliance with the contract documents will be considered dead.

A percent of the contract unit price placed quantity shall be paid for each tree and shrub correctly installed according to the following schedule:

Total Project Survival Rate	% of Contract Unit Price PaidPlaced Quantity
85 - 100% 60 - 84% Below 60%	10% 5% 0%

C. After First Year Replacement Installation.
After replacement plants have been installed, 5% of the contract unit price placed quantity will be paid for all plants considered alive at the end of the previous growing season including all plants replaced.

D. End of the Second Growing Season.
Payment will be based on the total project's second year survival rate. Plants not in compliance with the contract documents will be considered dead.

A percent of the contract unit price placed quantity shall be paid for each tree and shrub correctly installed according to the following schedule. Plants requiring replacement shall receive this payment after replacement is complete. Payment shall be in accord with the following schedule:

Total Project Survival Rate	% of Contract Unit Price PaidPlaced Quantity
85 - 100% 60 - 84% Below 60%	20% 10% 0%