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SECTION XI <br /> WEED CONTROL <br /> A. General Specifications <br /> A weed is defined as any plant growing in an area where it interferes with the intent and expectation <br /> of the landscape. The City expects all areas to have minimum weed populations due to the frequency <br /> of management intervals. <br /> 1. All weed control material shall be approved by CR prior to using. <br /> 2. All weeds shall be addressed, as indicated, in the frequency of management intervals. The <br /> Specifications, in general, indicate monthly weed control with a specified herbicide; <br /> however, if required to alter the existing intervals for certain areas for higher quality Holi <br /> cultural outcomes (e.g. parking lots, planters, sidewalks, etc.) <br /> 3. Weed heights of four (4) inches or greater are an indication of improper weed control <br /> treatment and/or intervals. Weedy areas will be brought to the attention of Contractor in <br /> order to gauge the reason for the deficiency. Remediation of the problem, if deemed a <br /> Contract deficiency, shall be within five (5) working days. <br /> 4. String trimming, in the absence of chemical treatment, may be used to control a weed <br /> population, but satisfactory weed control is measured by both results and the visual <br /> aesthetic of the planted area. <br /> 5. Manual weed control may be substituted for chemical weed control in some instances to <br /> maintain the proper interval (e.g. windy or rainy conditions which prevent chemical <br /> treatment). <br /> 6. Damage to plants caused by weed competition and herbicide application shall result in <br /> replacement plantings at Contractor's expense. <br /> B. Weed Control of Hard Surfaces <br /> Contractor shall apply an approved herbicide, in the prescribed interval, to remove and control weeds <br /> growing in cracks, expansion joints, patios, gutters (cement/asphalt interface), interior park roads, <br /> hardscapes, and other contiguous City landscape-hardscape interfaces, in order to maintain the <br /> landscape aesthetic. <br /> 1. Areas adjacent to paved surfaces shall have minimum margins of relief provided by <br /> chemical weed control. <br /> a. Systemic, non-selective weed control of adjacent roadside lawns shall not have in <br /> excess of twelve (12) inches of bare soil between the lawn and roadway edge. <br /> b. Overspray or excessively bare margins shall require replacement plants to be <br /> installed. <br /> C. Weed Abatement of Fallow or Undeveloped Lands <br /> Contractor shall periodically mow unwanted weeds in open space areas, wild areas, and undeveloped <br /> portions of City landscapes and vacant City lots. <br /> 1. Contractor shall perform weed abatement processes, which maintain the weed population <br /> below eight (8) inches, when required throughout the year, but not to exceed four(4) times <br /> annually. <br /> 2. Any additional frequencies or areas will be paid for as Additional Extra Work (AEW). <br /> RFP 23-151 Landscape Maintenance Services Page 53 of 135 <br />