217.01 217-1 SECTION 217 HERBICIDE TREATMENT DESCRIPTION
217.01 This work consists of furnishing and applying herbicides to prevent or control plant
growth in areas shown on the plans or designated. MATERIALS
217.02 Herbicides shall be designated in the contract.
All herbicide labels shall be currently registered with the Colorado Department of Agriculture and the U.S. Environmental Protection Agency . All herbicides shall be supplied to the project in labeled containers. The labels shall show the product name, chemical composition, expiration date, and directions for use. CONSTRUCTION REQUIREMENTS
217.03 All herbicides shall be applied by commercial pesticide applicators licensed by the
Colorado Department of Agriculture as qualified applicators. The Contractor shall furnish documentation of such licensing before herbicide application. Herbicide mixing and application shall be done per instructions on the registered product label. The Engineer shall be furnished such label information before mixing and application. The Contractor shall notify the Engineer at least 24 hours before each herbicide application and shall indicate the time and location application will begin. Application will not be allowed on Saturdays, Sundays, or holidays unless otherwise approved by the Engineer. Herbicides shall not be applied when weather conditions, including wind conditions, are unsuitable for such work. Herbicides shall not be applied when soil is extremely dry. Herbicide application method shall be such that plant growth outside the designated treatment areas will not be damaged. All damage caused by improper herbicide application shall be repaired at the Contractor's expense. Herbicides shall not be used on areas that are to be topsoil sources unless otherwise approved by the Engineer. METHOD OF MEASUREMENT
217.04 The quantity of herbicide treatment to be measured will be the actual number of
square yards treated per the foregoing requirements or the actual number of hours the Contractor spends applying the herbicide and accepted by the Engineer. Areas designated to receive herbicide treatment will be measured once for each designated application. Reapplication of her bicide required due to inappropriate timing of the original application will not be measured or paid for. 217.05 217-2 BASIS OF PAYMENT
217.05 The accepted quantities of herbicide treatment will be paid for at the contract unit
price per square yard or per hour. Payment will be made under: Pay Item Pay Unit Herbicide Treatment Square Yard Herbicide Treatment Hour Water will not be measured and paid for separately but shall be included in the work. 250.01 250-1 SECTION 250 ENVIRONMENTAL, HEALTH AND SAFETY MANAGEMENT DESCRIPTION
250.01 This work consists of protection of the environment, persons, and property from
contaminants that may be encountered on the Project. This includes monitoring the work for encounters with contaminants or suspected soil and groundwater contaminants; the management of solid, special, and hazardous waste; and management of visual emissio ns associated with hazardous waste, when encountered on the project.
250.02 The Contractor shall furnish all personnel, materials, equipment, laboratory services,
and traffic control necessary to perform the contamination monitoring, testing, and site remediation when required. Traffic control shall be per the requirements of Section 630. Monitoring equipment used to detect flammable gas, oxygen level, and toxic gas shall be capable of detection to meet the following standards: Table 250 -1 DETECTION STANDARDS FOR MONITORING GASES Instrument Detection Constituent Threshold Limit Increments Flammable Gas 1% LEL 1% Oxygen 19% 0.1% Toxic Gas 1 PPM 1 PPM Table 250 -1 Notes: LEL = lower explosive limit PPM = parts per million CONSTRUCTION REQUIREMENTS
250.03 General. Prospective bidders, including subcontractors, are required to review the
environmental documents available for this project. These documents are listed in subsection 102.05 as revised for this project. This project may be in the vicinity of property associated with petroleum products, heavy metal -based paint, landfill, buried foundations, abandoned utility lines, industrial area or other sites that can yield hazardous substances or produce dangerous gases. These hazardous substances or gases can migrate within or into the construction area and could create hazardous conditions. The Contractor shall use appropriate methods to reduce, and control known landfill, industrial gases, and visible emissions from asbestos encounters and hazardous substances that exist or migrate into the construction area. The Contractor shall follow CDOT’s Regulated Asbestos -Contaminated Soil Management Standard Operating Procedure, dated October 18, 2016, for proper handling of asbestos -contaminated soil, and follow all applicable Solid and Hazardous Waste Regulations for proper handling of soils encountered that contain any other substance mentioned above.