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CITY OF SANTA ANA <br /> <br /> <br />19 <br /> <br /> <br />3. HETEROTROPHIC PLATE COUNT <br /> <br />Routine: samples shall be collected by the Consultant in appropriate sterilized <br />bottles to which a chlorine reducing agent has been added on a weekly basis at <br />the same time and at the same 50 designated sample points. Consultant shall use <br />the necessary dilutions to report the results at concentrations up to 500 colony <br />forming units per milliliter. <br /> <br />4. TOTAL CHLORINE RESIDUAL <br /> <br />Routine: samples shall be field analyzed by the Consultant on a weekly basis at <br />the same time and at the same 50 designated sample points. DPD method of <br />analysis and the reading shall be made by the means of a colorimeter. Color disc <br />is not acceptable. Results must be reported to 0.1mg/l. Colorimeter must be <br />calibrated per the manufacturer’s requirements. Documents showing the <br />calibration shall be provided upon request. <br /> <br />5. GENERAL PHYSICAL QUALITY <br /> <br />(i) Routine: The Consultant shall collect Samples in appropriate sample <br />bottles on a monthly basis at the 50 designated sample points, with an <br />additional 25 samples to be collected if a month contains 5 weeks. The <br />analysis shall consist of turbidity, odor, color, field pH, and temperature. <br /> <br />(ii) Customer Inquiry: Samples shall be collected by the City in specially <br />prepared sample bottles provided by the Consultant and may consist of <br />four samples per month and shall be picked up by the Consultant at the <br />City Corporate Yard Meter Shop within twelve hours of notification. The <br />analysis shall consist of turbidity, odor, and color. <br /> <br />6. GENERAL MINERAL <br /> <br />Samples shall be collected by the City in specially prepared sample bottles <br />provided by the Consultant and may consist of twenty samples on a yearly basis <br />(as needed) and shall be picked up the Consultant at the City Corporate Yard <br />Water Quality Shop within twenty-four hours of notification. <br /> <br />7. INORGANICS <br /> <br />Samples shall be collected by the City in specially prepared sample bottles <br />provided by the Consultant and may consist of twenty samples on a yearly basis <br />(as needed) and shall be picked up by the Consultant at the City Corporate Yard <br />Water Quality Shop within twenty-four hours of notification. <br /> <br />8. TRIHALOMETHANES <br /> <br />The City shall collect samples in specially designed sample vials containing a <br />chlorine reducing agent and sealed with TFE-faced septa and screw caps. It shall <br />consist of twelve samples on a quarterly basis beginning in February and shall be <br />picked up by the Consultant at the City Corporate Yard Water Quality Shop within <br />twelve hours of notification. <br />