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<br />002070 <br /> <br />Table 2: Summary of Water Quality Testing, Alamar River <br /> <br />Physical Properties Characteristics and Observations <br />Color The Golor of most water samples was <br /> murky, ranging from brown to gray to <br /> black. In certain areas (Zone 3) the water <br /> was clear. <br />Odor The :arst samples in Zone 1 had a very <br /> strong odor. In Zones 2 and 3, foul odors <br /> decreased dramatically. <br />Temperature Average air temperature: 25 -32 C, <br /> depending on the time and place sampling <br /> was conducted. Average water <br /> 0 <br /> temperature: 28 C. <br />Turbidity quantifies the degree to which All the samples demonstrated turbidity. <br />light travels through a water column and is <br />scattered by the suspended organic and <br />inorganic particles. It is of concern in <br />drinking water supplies because turbidity <br />reduces the efficiency of disinfection by <br />shielding microorganisms. It also acts as a <br />vehicle for the concentration, transport, and <br />release of organic and inorganic <br />contaminants, bacteria, and viruses <br />(CALFED Bay-Delta Program 1998). <br />Dissolved Oxygen is the amount of All water samples in the River Corridor <br />dissolved oxygen present at a given represented no value. <br />temperature in water. Oxygen-depleting <br />substances are found in waste discharges, <br />agricultural discharges, urban stormwater, <br />sediment, and algae (CALFED Bay-Delta <br />Program 1998). <br />pH The samples demonstrated a slightly <br /> alkaline behavior with an average pH of <br /> 8.2. The exception was at San Jose with a <br /> pH of approximately 7.7. <br />Nitrates The majority of the samples demonstrated <br /> an average of 2, with the exception at San <br /> Jose, where it was zero. <br /> <br />15 <br />