Efforts to address quality of life issues in East Boston resulted in the arrest of three individuals. Two males and a female were arrested at approximately 4:10pm today after Boston Police obtained a calling card for a prostitution service.Eunice Valle, 36, of Lynn drove a car to the corner of Sumner & Jeffries Streets with two male passengers. An undercover officer was offered sex for a fee and afterwards, police cruisers surrounded the vehicle and arrested all occupants. Valle will be charged with Sex For A Fee and Operating a Motor Vehicle Without a License. Guillermo Lopez, 26 and Julio Colon, 22, both of East Boston will each be charged with Support from a Prostitutes Earnings. They will be arraigned in East Boston District Court on Monday.