Laserfiche WebLink
0 <br />Chapter 4-Site-Specific Industrial Storm Water BMPs <br />Chemical treatment is only effective on mineral soils, as opposed to muck soils, because the <br />chemicals bond better to mineral soils. Therefore, it should be used only in and regions. Vehicular <br />traffic should be routed around chemically treated areas to avoid tracking of the chemicals. Certain <br />chemicals may be inappropriate for some types of soils or application areas. For example, spraying <br />chemicals on the soil of an industrial site adjacent to a school may be dangerous. Local <br />governments usually have information about restrictions on the types of palliatives that may be <br />used. Special consideration must be given to preserving ground water quality whenever chemicals <br />are applied to the land. <br />Since most of these techniques are temporary controls, sites should be inspected often and <br />materials should be reapplied when needed. The frequency for these inspections depends on site- <br />specific conditions, weather conditions, and the type of technique used. <br />• <br />Advantages of Dust Control (Land Disturbance and Demolition Areasl <br />• Can help prevent wind-and-water based erosion of disturbed areas and will reduce <br />respiratory problems in employees <br />• Some types can be implemented quickly at low cost and effort (except wind breaks) <br />• Helps preserve the aesthetics of the site and screens certain activities from view (wind <br />breaks) <br />• Vegetative wind breaks are permanent and an excellent alternative to chemical use <br />Disadvantages of Dust Control (Land Disturbance and Demolition Areas) <br />• Some types are temporary and must be reapplied or replenished regularly <br />• Some types are expensive (irrigation and chemical treatment) and may be ineffective under <br />certain conditions <br />• May result in health and/or environmental hazards, e.g., if overapplication of the chemicals <br />leaves large amounts exposed to wind and rain erosion or ground water contamination <br />• May create excess runoff that the site was not designed to control (irrigation) <br />• May cause increased offsite tracking of mud (irrigation) <br />• Is not as effective as chemical treatment or mulching and seeding; requires land space that <br />may not be available at all locations (wind breaks) <br />4-41