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PAGE <br />2. BACKGROUND NOISE AND DETECTABILITY 7 <br />3. DELETERIOUS EFFECTS OF WARNING SOUNDS 8 <br />4. HEARING DAMAGE 8 <br />5. SUMMARY 8 <br />C. ESTIMATING RANGE OF COVERAGE 8 <br />VI. PLANNING AN OUTDOOR WARNING SYSTEM 9 <br />A. DETERMINING WARNING COVERAGE 9 <br />B. SITING TO AVOID HAZARDOUS EXPOSURE 11 <br />VII. SYSTEM TESTING AND USE 14 <br />A. KNOWLEDGE OF WARNINGS 14 <br />B. TESTING /ALERT. 17 <br />C. PUBLIC INFORMATION CAMPAIGN 17 <br />iv <br />12 <br />CPG 1 -17 <br />7 1 <br />