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l <br /> ATTACHMENT A <br /> FOR <br /> TASK ORDER NO. 3 <br /> FOR <br /> CONTINUING AGREEMENT FOR ENGINEERING SERVICES <br /> Owner: City of Decatur, Illinois �', <br /> Engineer: Black& Veatch Corporation � <br /> I <br /> Project: Chlorine Feed System Improvements Study I'' <br /> Date: <br /> DESCRIPTION OF SCOPE OF SERVICES <br /> A chlorine leak occurred at the Owner's South Water Treatment Plant (SWTP) in 2002 as <br /> a result of a malfunction with e�sting chlorine feed equipment. The Owner desires <br /> improvements to mitigate and reduce the risk of possible future chlorine leaks. The <br /> Owner has engaged the Engineer to evaluate various alternatives to improve the safety of <br /> the existing chlorine storage and feed system. The Engineer shall evaluate the following <br /> four alternatives: <br /> 1. Installation of a chlorine scrubber. <br /> 2. Conversion to a totally vacuum driven chlorine feed system. <br /> 3. Installation of automatic shutoff valve actuators. <br /> 4. Replacement of the existing chlorine disinfection system with a new sodium <br /> hypochlorite storage and feed system. <br /> The scope of services for Task Order No. 3 shall generally consist of the following. <br /> A. EVALUATIONS <br /> Engineer shall prepare an evaluation and preliminary opinion of probable cost, including <br /> initial equipment purchase and installation costs, for each alternative. Feed rates for sizing <br /> proposed new equipment will be based on the chlorine feed rates and chlorine equipment <br /> sizing stated in the meeting rrunutes dated May 21, 2003 for the Engineer's site inspection <br /> on May 7, 2003. Engineer shall obtain price quotes for new equipment from equipment <br /> . suppliers. The Engineer's preliminary cost opinions will include costs for new utilities or <br /> A-1 <br /> City of Decatur <br /> Task Order No.3 <br /> Rev.07-25-03 <br />