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5. Source Defect Location <br />All defects located (cracked manhole walls, broken pipe seals, leaking <br />frame seals, etc.) were recorded <br />on field inspection forms. To the <br />left, in Figure III-2, is a <br />photograph of a broken frame. <br />Photographs like this one, and the <br />one below, were taken of all <br />defects observed and are included <br />with the field inspection data in <br />Appendix F. <br />Figure III-2 - Manhole 02-O100M with <br />Broken Frame <br />6. Smoke Testing <br />Smoke testing of a sanitary collection system is an effective means to detect <br />sources of inflow and restrictive conditions. Smoke testing was conducted <br />on approximately 513,660 <br />linear feet of pipeline. During <br />performance of this task, smoke <br />was introduced into line <br />segments and service laterals. <br />Where smoke escaped, leaks <br />were recorded with color <br />photographs, I/I flow rates were <br />estimated, and sketches were <br />prepared which referenced each <br />leak to two permanent markers. Figure III-3 shows smoke exiting through <br />a mainline defect. The sketches and field notes for each defect are included <br />in Appendix F. Leak rates assigned to each defect are based on the field <br />ADS Environmental Services, Inc. <br />III-6 <br />