_O & M MANUAL - WEST LANE MOBILE HOME PARK

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included. Log entries should be made during the day of various activities and problems as they develop. Do not wait until the end of the day to write up the log as some items may be overlooked. If the operator will take a few minutes to make log entries in the morning and afternoon, he will develop a good log. Logs are beneficial to the operator and to people who replace the operator during vacations; illnesses, or leaves of absence. Monthly Records Monthly records should reflect the totals and averages of the values recorded daily or at some other frequency and in some cases should give maximum and minimum daily results, such as maximum and minimum daily flows. Evaluation of Records Records are not useful unless they are evaluated and used as indicators of plant operation and maintenance. Records are also useful as sources for reports to management or the public. The recorded data should enable the operator to determine operation and maintenance of his plant. The information shown by the records should also indicate to him and his supervisor the efficiency of each unit in the plant. The importance of looking at and analyzing records frequently cannot be overemphasized. Records should not only be analyzed as a single piece of data, but any one variation should be looked upon for its relation to another source of data. For example, a sudden drop in temperature of the influent might be accompanied by greater increased flows. This could indicate infiltration of sewer lines. Infiltration could influence the BOD and suspended solids concentrations in the plant effluent. Before any meaningful interpretation can be made of any sudden variation in data, an expected range of values has to be determined for the particular treatment unit under consideration based upon expected or past performance. pa%oK�rr'7�ealth-satet�-recordc-1-