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3 distance and plate out along the river or stream bed. Obviously, no dust palliative should be applied during a rainstorm, or if a storm is imminent because heavy rain could wash away any product until it has a chance to penetrate the surface soil and/or dry out. Normally Coherex will penetrate into the surface and be relatively dry in less than one hour. However, should a sudden heavy rainstorm occur during the application process and wash away any Coherex still on the surface, please note the product retains its safety qualities. Coherex has been tested for BOD in accordance with "Standard Methods for the Examination of Water 8 Waste Water", 13th Ed., 1971. The presence of Coherex in storm water runoff results in virtually no BOD increase. PLANT LIFE AND WILD LIFE CONSIDERATIONS Coherex is not injurious to most plants, trees and shrubs. In fact, it has frequently been used to aid germination. Many states now employ diluted Coherex when hydroseeding highway slopes, etc. because of its ability to aid the germination process while holding the seed in place. Coherex was recently used in similar application at the Los Angeles International Airport. The resins are biodegradable if left with no further applications to rejuvenate them. Successive treatments of Coherex result in a gradual buildup of the resins, and a regular maintenance program means the resins are not totally lost when a roadway is lightly graded and the treated material is not "lost" to the sides. Simply blade the treated soil back onto the roadway and make another light application of dilute Coherex solution. CHEMICAL AND PHYSICAL PROPERTIES OF Coherex Note the information provided on the Material Safety Data Sheet for Coherex. The pH of Coherex in its concentrate form ranged from 4.5 to 6.5 and as the product is diluted with water, the pH will move to match the pH of the local water being used as the dilutant. Coherex is an emulsion, and emulsions do not have CAS #'s. The CAS #64742-11-6 shown on the Material Safety Data Sheet applies to its base oil only. Coherex had been patented many years ago and it is produced by combining a base oil, water, and an emulsifier in a proprietary manner.