Agenda - Council - 06/14/2022 - Laserfiche WebLink

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H. MEASUREMENT OF SUCCESSFUL PRAIRIE SEED ESTABLISHMENT 1. By the end of year two, native grasses and forbs from the seed mix should be present at a density of one plant per square foot over 75% of the site. 2. Owner's Representative will conduct monitoring and determination of success by the above listed requirements. The Contractor shall be required to conduct independent monitoring on the total project. The Contractor is responsible for achieving the stated goals in the stated time frame and shall provide approved maintenance tasks to the site to achieve the stated goals. III. PLANT INSTALLATION SPECIFICATIONS A. SITE PREPARATION: 1. Site preparation of tree/shrub/plug plantings shall consist of the following: a. Mow planting areas prior to first herbicide application. b. Wait one to two weeks for exotic vegetation to become actively growing and 8-12 inches tall before applying the first herbicide application. Apply a glyphosate herbicide to all vegetation within the delineated seeding areas following herbicide manufacturer's directions. Rodeo should be used in aquatic areas. Application of herbicide to be done by a licensed pesticide applicator. Allow a minimum of 14 days for effective treatment before beginning other procedures. c. After a 14-day period, re-spray with a glyphosate herbicide following the manufacturer's directions to kill exotic vegetation re-growth. Allow a minimum of seven days for effective treatment before starting next procedure. d.Till in clean topsoil and organic material as specified by the project designer. (Note: some projects will not specify tilling before plant installation). e. Install plant material according to plan specifications. B. PLANT QUALITY 1. Plant stock shall be in conformance with the latest edition of the American Standard for Nursery Stock, American Association of Nurserymen. 2. Installation: a. Mark out bed shapes for approval of Owner's Representative using marking paint or stakes and string. Planting shall be located where shown on the drawings. Stake out and identify plant locations with small wooden stakes. Verify planting bed and planting locations with Owner's Representative before excavating. Prior to the excavation of planting areas or pits, or placing tree stakes, locate all utility lines, electric cables, sprinkling systems and conduits so that proper precautions may be taken not to disturb or damage subsurface improvements. Should obstructions be found, the Contractor shall promptly notify the Owner's Representative. b. The installation of prairie plugs shall occur after the seeding of prairie species is conducted. Prairie plugs shall be watered as often as necessary after installation to ensure their establishment. 59