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3-07 Debris Control The property shall be reviewed weekly to ensure that debris such as bottles, papers, cartons, and similar items are disposed of to keep the grounds neat in appearance. 3-08 Aerification Aerification of turf to improve water penetration as needed, but no less than twice yearly (March and September). SECTION 4. ORNAMENTAL PLANT MATERIAL AND GROUND COVER 4-01 General The Contractor shall maintain all ground cover, including hard fescue areas, on the site(s) covered by this agreement in a healthy, thriving condition by performing the following operations and other work incidental thereto: 4-02 Weed Control Eliminate weeds, including undesirable grasses such as tall fescue, nut grass, rye, etc., preferably with pre-emergent herbicides, but also with selective systematic herbicides. Hoe weeds as little as possible since this may result in plant damage. Hand-pull weeds that are not effectively controlled by chemical herbicides. A. All planting beds and graveled areas shall be kept weed free. B. All debris resulting from weeding operations shall be removed from the project area on the same day that the weeding operation occurs. C. Should the Contractor desire to use a chemical weed control program, he shall develop said program and submit it in writing as part of this bid. The City shall be notified at least seven (7) days before each use. Credit for herbicide application (pre-and post-emergent)will only be given when Contractor notifies the City prior to said application. D. All tree wells are to be kept weed and grass free for an area extending out a minimum of 2.5 feet from the trunk of the tree in any direction. (See also Sections 5 and 6 under Shrub and Tree Care.) 4-03 Ground Cover Areas All ornamental plant material and ground covers shall be judiciously pruned maintaining the natural structure of the plant. All vegetation shall be maintained six inches away from structures and clear of all walkways. Perform edging so that groundcover "feathers back" from border of groundcover area, forming a natural appearance; do not shear or create vertical edges. Ground covers shall be kept a minimum of 12 inches from the bases of shrubs and trees. 4-04 Vines Vines growing on walls in street median areas shall be kept at all times at least 2 feet below the top of any wall on which they are climbing. Vines shall not be allowed to grow on the walls at Fire Station locations. Page 12