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<br />I <br /> <br />I <br /> <br />I <br /> <br />1. Require written documentation of all maintenance and repair work <br /> <br /> <br />performed on the system. A proposed sample form for this purpose <br /> <br /> <br />is included in Appendix C. <br /> <br />I <br /> <br />I <br /> <br />The form should indicate the nature of the work, location with refer- <br />ences, materials and any ot~er pertinent data. <br /> <br />I <br /> <br />2. Transfer information from t~e repair and maintenance log to a master <br /> <br /> <br />set of district mapping. A reproducible set of district maps may be <br /> <br /> <br />used for this purpose. <br /> <br /> <br />All corrections and up-to-date information should be shown on the <br />master set of district mapping. <br /> <br />I <br /> <br />I <br /> <br />I <br /> <br />3. Provide monuments beside roadways at appropriate intervals with the <br /> <br /> <br />necessary information to locate valves and mains. All distances and <br /> <br /> <br />directions would be referenced to the monument. <br /> <br />I <br /> <br />A detail of an inexpensive type of monument suitable for this purpose <br />is shown in Figure-II. <br /> <br />I <br /> <br />I <br /> <br />C. Distribution Lines <br /> <br />I <br /> <br />The primary problems associated with the distribution lines are freezing <br /> <br /> <br />in winter, breaks, inadequate valving, dead ends, and pressure variation. The <br /> <br /> <br />freezing problems are caused by shallow depth of the water mains. These lines <br /> <br /> <br />were initially installed in such a manner. <br /> <br />I <br /> <br />I <br /> <br />The winter of 1978-79 was the coldest winter experienced since the district <br /> <br /> <br />was established in 1964. The frost line was estimated to be 1n excess of 6 feet <br /> <br /> <br />in many areas. Frozen segments of the system interrupted water supplies to many <br /> <br /> <br />of the residents. Therefore, many of the recommended distribution line improve- <br /> <br /> <br />ments are specifically for relief of freezing problems and are limited primarily <br /> <br /> <br />to the areas with a history of freezing problems. It is likely that additional <br /> <br /> <br />areas could experience similar freezing problems in the future under more severe <br /> <br />winter conditions. <br /> <br />I <br /> <br />I <br /> <br />I <br /> <br />Replacement lines have been recOtmnended to be 6" V, rather than 4" v,. <br /> <br />I <br /> <br />-52- <br />