With 75 percent voter approval on Nov. 6, Somerville to establish local ordinance, create local committee with power to recommend projects for funding by added annual revenues of $1.5 Million; Alderman must approve all CPA spending for historic preservation, recreation and open space, and affordable housing Ten days after Somerville voters overwhelmingly approved local ballot Question 4, Mayor Joseph A. Curtatone today announced the city's next steps in creating the local mechanisms to implement the Community Preservation Act (CPA).  As directed by the enabling state legislation, the Curtatone Administration will propose a local ordinance establishing a nine-member Community Preservation Committee to begin the process of developing recommendations to allocate additional revenues that the City will begin receiving under the terms of the state's CPA law.  The total annual amount raised under the CPA will vary with the city's total property tax revenues and the amount of money disbursed by the state's CPA fund to participating communities.  Based on current property tax assessments in Somerville and on this year's rate of disbursement from the state fund, Somerville's Board of Assessors estimated that, had the CPA been in place this year, the city would have accrued over $1.5 million in additional funding for the three specific purposes covered by the CPA law: historic preservation; open space and recreation; and affordable housing. "Somerville's voters have approved our participation in the CPA by a three-to-one margin, and I know the Board of Aldermen is ready to work with me to fast-track this law onto