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Conversion to Low Volume Irrigation System Converting from high volume flood (or seepage) irrigation to low volume microirrigation conserves water improves water quality. With micro-irrigation, water is distributed through a network of underground pipe and above ground lateral tubing and applied directly to the soil above the plant' s root zone. Modifications to existing microirrigation systems that can be expected to increase system efficiency and reduce offsite movement of nutrients, pesticides, and sediment are also eligible. Grade Stabilization This practice includes the use of structures, pipe, concrete, rock, vegetation, synthetic fabrics, and other materials to maintain the stability and integrity of soils in ditches, swales, water furrows, and other erosion prone areas. This practice also includes equipment for chemical mowing of ditch banks to promote the proliferation of grasses through the exclusion of higher growing weeds and brush. On-Site Water Detention/Retention This practice will provide for the attenuation of both the rate and volume of off-site water and sediment discharge following heavy storm events. The water may be stored for future use or released off-site later at reduced discharge rates. Permanent Agrichemical Mixing/Rinsin Facility acility and/or Equipment Washdown Facility This practice provides for the construction of a permanent facility to contain and recover spillage or rinsate from a fertilizer or pesticide mix and load area or from an equipment wash down site. It is intended to prevent fertilizer or pesticide contamination of ground or surface waters. The facility may include a concrete containment pad, pesticide storage building, sump/pump, rinsate tank, mixing tank, holding tank, and removable or permanent roof. Portable Agrichemical Mixing Station A portable device used in the field to prevent unintentional release of agrichemicals to the environment during mixing and loading of agrichemicals. The portable device must meet published standards and specifications (USDA-NRCS Field Office Technical Guide — Interim Standard, Code 703). The device can be used at more than one citrus grove. Precision Application Equipment Specialized equipment that allows nutrients and pesticides to be applied in a precise manner relative to the target of application. This includes sonic or optical sensors, devices that apply pesticides in a pre-defined, regulated manner, and equipment that uses GIS technology to allow application based on a pre-defined map. Precision application equipment often varies the rate of application, materials used, and location of application to achieve precise placement of the materials. Through this program, the department intends to cost share the precision elements of new equipment or retrofits to existing equipment that are needed to convert a non-precision spreader or sprayer into a precision spreader or sprayer. C:1Documents and SettingMbrendadlMy DocumentsTDACS Info1FOACS BMP 20071Water Quality Quantity 5 Applicant's Handbook Rev 12 06.doc