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ATTACHMENT B SCOPE OF WORT INDIAN RIVER COUNTY NORTH COUNTY WATER TREATMENT PLANT ADMENDMENT NO. 1 - PHASE II BUILD-OUT EXPANSION BACKGROUND The North County Water Treatment Plant (NCWTP) is a permitted 3 . 53 million gallons per (mgd) (3 . 0 mgd of permeate) facility serving northern Indian River County (IRC) The facility day began construction in June 1996 and was placed into operation in July 1998 . The existingplant draws water from three upper Floridian Aquifer wells. The facility currently utilizes tw5 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 mgr d . The facility layout was designed for future expansion at such time customer demande in thh North County service area warranted . The original scope of services under Work Author No . 1 was to add only three new 1 .5 mgd nanofiltration skids during Phase II Expansion. Theon 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 will be modified unde Amendment No . 1 to include a total of six new 1 . 5 mgd nanofiltration skids . Based on the amended scope of services, the treatment plant will be designed to have permeate capacity of 12 mgd and a finished water capacity of 14 . 12 mgd (assuming 15 percent blend rate) . SCOPE OF SERVICES CDM shall provide the additional engineering services related to increasing the permeate wate production at the NCWTP to build-out with a capacity of 12 mgd of permeate flow. The r additional engineering services shall include updating the preliminary design report, completion of the final design to increase the permeate capacity to 12 mgd, permit modifications based on the amended scope of services, and construction services for the expansion of the IRC NCWTP to build-out. 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 are additional scope items not previouslycovered in the Phase II plant expansion. These services will be addressed in the final plant desiand covered under this amendment: gn 1 The final design of all Phase II improvements by CDM will utilize the design intent and criteria provided in the NCWTP Expansion Preliminary Design Report prepared by CDM and dated December 2004 in conjunction with those modifications described herein, as requested by IRC. Subsequent to the review/ revision of the Preliminary Design Report, as described in Task 1 - "Review of Preliminary Design Report, " any B-1 mh2080. doc