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ATTACHMENT A SCOPE OF WORK INDIAN RIVER COUNTY NORTH COUNTY WATER TREATMENT PLANT AMENDMENT NO. 3 - ADDITIONAL PERMITTING and BIDDING SERVICES BACKGROUND The North County Water Treatment Plant (NCWTP) is a permitted 3.53 million gallons per day (mgd) (3 .0 mgd of permeate) facility serving northern Indian River County (IRC) . The facility began construction in June 1996 and was placed into operation in July 1998 . The existing plant draws water from three upper Floridan Aquifer wells. The facility currently utilizes two 1 .5 mgd membrane treatment nanofiltration skids and incorporates a raw water blend rate of approximately 15 percent (0.53 mgd) to achieve the facility finished water capacity of 3.53 mgd . The facility layout was designed for future expansion at such time customer demand in the North County service area warranted . The original scope of services under Work Authorization No. 1 was to add three new 1 .5 mgd nanofiltration skids during Phase II Expansion . The total plant rated capacity after this expansion would have been 7.5 mgd of permeate capacity . Based on IRC's request to provide additional standby capacity, this has been modified under Amendment No. 1 to include a total of six new 1 .5 mgd nanofiltration skids . Under the amended scope of services, the treatment plant will be designed to have permeate capacity of 12 mgd and a finished water capacity of 17.14 mgd (assuming 30 percent blend rate) . Due to the recent price increases IRC would like the option of building the facility with a lowered permeate capacity to meet budgetary constraints. The plant is fully designed to meet the build- out flows of 17.14 mgd. The additional design services are for modifications to the electrical system to allow for a partial expansion if the bids are in excess of the project's capital budget. This project modifies the bidding services to designate equipment that could be installed at a later date when demand is expected. This flexibility would allow IRC to meet the water demands without exceeding the current budget for reserve capacity. SCOPE OF SERVICES CDM shall provide the additional engineering services related to design and bidding services for additional engineering effort required designating equipment as an alternate bid item for the purposes of establishing a base bid within the current capital budget for the facility. The alternate bid item would be for equipment that could either be installed in this expansion or left out if budgetary constraints exist. This option allows for IRC to decide the extent of equipment being installed during this expansion. The design services are required to maintain the full functionality of the plant through a partial expansion should IRC exercise that option. The intent of this Amendment is to provide additional funding for the upper limit permitting services of Task 3. The level of effort required for permitting services is difficult to estimate since the responses are determined by the regulators. Therefore, if unforeseen tasks arise, CDM reserves the right to request additional funds to complete the effort A-2 mhzszs dm