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ATTACHMENT B SCOPE OF WORK INDIAN RIVER COUNTY NORTH COUNTY WATER TREATMENT PLANT PHASE II EXPANSION BACKGROUND The North County Water Treatment Plant is a permitted 3 . 53 million gallons per day (mgd) 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 Floridian Aquifer wells . The facility utilizes two, 1 . 5 mgd membrane treatment nanofiltration skids and incorporates a raw water blend rate (0 .53 mgd) to achieve the facility capacity of 3 . 53 mgd . The facility layout was designed for future expansion, as required, as a result of new customers / development in the North County area . SCOPE OF SERVICES CDM shall perform the following described engineering services related to the preliminary design, final design, permitting, and construction services for the Phase II expansion to IRC North County WTP. In general this Phase II Expansion is intended to increase the overall membrane treatment capacity of the plant from 3 . 0 mgd to 7.5 mgd with provisions to expand facility capacity to an ultimate 12 mgd of membrane capacity. The total plant rated capacity after Phase II Expansion will be 8 . 83 mgd (projected to be 7.5 mgd membrane treatment capacity plus 1 .33 mgd bypass and blend) . Should it be required that the membrane treatment capacity be increased beyond 7.5 mgd based on the recommendations from Task 1 of this work authorization, a subsequent amendment to this Authorization No . 1 will be negotiated . The total plant rated capacity after Phase III Expansion (future) will be 14 . 12 mgd (projected to be 12 mgd membrane treatment capacity plus 2. 12 mgd bypass and blend) . The intent of this authorization is for CDM to provide to IRC a set of Contract Documents suitable for public procurement for construction of the herein described facilities . The following described engineering services have been based upon the following assumptions as directed by IRC Utilities Department staff: 1 . The final design of all Phase II improvements by CDM will utilize the design intent and criteria provided in the North County (Hobart) RO Plant Preliminary Design Report prepared by CDM and dated September 1995 in conjunction with those modifications described herein, as requested by IRC . Subsequent to the review of the Preliminary Design Report, as described in Task 1 - " Review of Preliminary Design Report," changes in design intent and criteria may be adopted and incorporated into the final design. Significant changes in the design intent and criteria as requested by IRC which are not identified herein and that result in significantly altered or new facilities and/ or major equipment will be considered Additional Services not covered under this authorization. B-1 mhl534.doc