9600 SHARON DR EXPLORER MIDDLE SCHOOL 2016-05-27

CITY OF EVERETT STORMWATER MANAGEMENT MANUAL 9. Do not spray pesticides within 100 feet of open waters including wetlands; ponds;and streams, sloughs,and any drainage ditch or channel that leads to open water,except when approved by Ecology or by the City. All sensitive areas including wells,creeks, and wetlands must be flagged prior to spraying. 10. As required by the City or by Ecology,complete public posting of the area to be sprayed prior to the application. 11. Spray applications should only be conducted during weather conditions as specified in the label direction and applicable local and state regulations. Do not apply during rain or immediately before expected rain. Suggested BMPs for the Use of Pesticides 1. Consider alternatives to the use of pesticides such as covering or harvesting weeds, substitute vegetative growth,and manual weed control/moss removal. 2. Consider the use of soil amendments, such as compost,that are known to control some common diseases in plants, such as Pythium root rot,ashy stem blight,and parasitic nematodes. The following are three possible mechanisms for disease control by compost addition(USEPA publication 530-F-9-044): a. Successful competition for nutrients by antibiotic production b. Successful predation against pathogens by beneficial microorganism;and c. Activation of disease-resistant genes in plants by composts. Note: Installing an amended soil/landscape system can preserve both the plant system and the soil system more effectively. This type of approach provides a soil/landscape system with adequate depth,permeability, and organic matter to sustain itself and continue working as an effective stormwater infiltration system and a sustainable nutrient cycle. 3. Once a pesticide is applied, its effectiveness should be evaluated for possible improvement. Records should be kept showing the applicability and inapplicability of the pesticides considered. 4. An annual evaluation procedure should be developed including a review of the effectiveness of pesticide applications, impact on buffers and sensitive areas(including potable wells),public concerns,and recent toxicological information on pesticides used/proposed for use. If individual or public potable wells are located in the proximity of commercial pesticide applications, contact the regional Ecology hydrogeologist to determine if additional pesticide application control measures are necessary. 5. Rinsing from equipment cleaning and/or triple-rinsing of pesticide containers should be used as product or recycled into product. For more information, contact the WSU Extension Home Assist Program at(253) 445-4556;Bio-Integral Resource Center(BIRC), P.O. Box 7414, Berkeley, CA 94707;or Ecology to obtain "Hazardous Waste Pesticides" (publication No. 89-41);contact U.S. EPA to obtain a publication entitled "Suspended, Canceled and Restricted Pesticides"which lists all restricted pesticides and the specific uses that are allowed. Valuable information from these sources may also be available on the Internet. Suggested BMPs for Vegetation Management 1. Use at least an 8-inch"topsoil" layer with at least 8 percent organic matter to provide a sufficient vegetation-growing medium. Amending existing landscapes and turf systems by increasing the percent organic matter and depth of topsoil can substantially improve the permeability of the soil, improve the disease and drought resistance of the vegetation,and reduce fertilizer demand. This reduces the demand for fertilizers, herbicides,and pesticides. Organic matter is the least water- Volume IV—Source Control 3-23