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available for conversion to flashboard structures and for the replacement of existing <br /> flashboard structures that are no longer functioning properly. <br /> Conversion to Low Volume Irrigation System Converting from high volume flood <br /> (or seepage) irrigation to low volume microirrigation conserves water improves <br /> water quality. With micro-irrigation, water is distributed through a network of <br /> underground pipe and above ground lateral tubing and applied directly to the soil <br /> above the plant's root zone. Modifications to existing microirrigation systems that <br /> can be expected to increase system efficiency and reduce offsite, movement of <br /> nutrients, pesticides, and sediment are also eligible. <br /> Grade Stabilization This practice includes the use of structures, pipe, concrete, <br /> rock, vegetation, synthetic fabrics, and other materials to maintain the stability and <br /> integrity of soils in ditches, swales, water furrows, and other erosion prone areas. <br /> This practice also includes equipment for chemical mowing of ditch banks to <br /> promote the proliferation of grasses through the exclusion of higher growing weeds <br /> and brush. <br /> On-Site Water Detention/Retention This practice will provide for the attenuation of <br /> both the rate and volume of off-site water and sediment discharge following heavy <br /> storm events. The water may be stored for future use or released off-site later at <br /> reduced discharge rates. <br /> Permanent Agrichemical Mixing/Rinsing Facility and/or Equipment Washdown <br /> Facili This practice provides for the construction of a permanent facility to contain <br /> and recover spillage or rinsate from a fertilizer or pesticide mix and load area or <br /> from an equipment washdown site. It is intended to prevent fertilizer or pesticide <br /> contamination of ground or surface waters. The facility may include a concrete <br /> containment pad, pesticide storage building, sump/pump, rinsate tank, mixing tank, <br /> holding tank, and removable or permanent roof. <br /> Portable Agrichemical Mixing Station A portable device used in the field to prevent <br /> unintentional release of agrichemicals to the environment during mixing and loading <br /> of agrichemicals. The portable device must meet published standards and <br /> specifications (USDA-NRCS Field Office Technical Guide — Interim Standard, Code <br /> 703). The device can be used at more than one citrus grove. <br /> Precision Application Equipment Specialized equipment that allows nutrients and <br /> pesticides to be applied in a precise manner relative to the target of application. <br /> This includes sonic or optical sensors, devices that apply pesticides in a pre- <br /> defined, regulated manner, and equipment that uses GIS technology to allow <br /> application based on a pre-defined map. Precision application equipment often <br /> varies the rate of application, materials used, and location of application to achieve <br /> precise placement of the materials. Through this program, the department intends <br /> to cost share the precision elements of new equipment or retrofits to existing <br /> equipment that are needed to convert a non-precision spreader or sprayer into a <br /> precision spreader or sprayer. <br /> Water Table Observation Well This practice facilitates observation of the water <br /> table in a citrus grove and will help the manager to determine when groundwater <br /> Revised 03/21/02 5 <br />