new haven, conn. – two cpa and business-valuation firms – meyers & harrison, llc of woodbridge and marenna, pia & associates, llc of wallingford – have merged and will be relocated to new haven. the new entity, known as meyers, harrison & pia, llc, will have a staff of 29. additional offices are in greenwich and glastonbury. mark harrison serves as managing partner of the new firm. kenneth pia jr. heads its business-valuation department. randy harrison will manage the firm’s tax department. michele spence heads up accounting and auditing. donald clark leads tax and accounting work with emerging businesses.