742
7-115SECTIO N 742 – DISINFECTANTS
742.0 1 CHLORIN E SOLUTION . Chlorine solution used for disinfecting springs, wells, and other water systems shall consist of a solution of water and liquid chlorine, sodium hypochlorite, calcium hypochlorite, or chloride of lime. Liquid forms o f chlorine or sodium hypochlorite and powder forms of calcium hypochlorite or chloride of lime shall be used according to the instructions supplied by the manufacturer and as recommended by the Vermont Department of Health. If sodium hypochlorite is alread y in solution as a laundry bleach containing 5.25% sodium hypochlorite, it shall be used at the rate of one part per 12,000 parts of water to be disinfected. The dosage should be sufficient to produce a chlorine taste in the water. 742.0 2 SPAC E DEODORIZER . Space deodorizer shall consist of a commercial liquid concentrate that, when applied at the dilution ratio recommended by the manufacturer, will suppress the obnoxious odors produced by the material to which it is applied. The deodorizer shall be non -corrosive to the material to which it is applied. The deodorizer shall be nontoxic and nonirritating. It shall be approved by the Engineer before use.
745
7-116SECTIO N 745 – WATER
745.0 1 WATER . All water used shall be clear and free of harmful amounts of oil, salt, acids, alkalis, sugar, organic matter, or other substances injurious to the finished product, plant life, or the establishment of vegetation. Where the source of wa ter is relatively shallow, the intake shall be maintained at such a depth and so enclosed as to exclude silt, mud, grass, and other foreign materials. No formal tests of water will be made unless the Engineer questions the quality of the water. Water known to be of potable quality may be used without tests. Mixing water for concrete or mortar shall meet the requirements of ASTM C1602 .