Within ninety (90) calendar days of receipt of the ORDER, PRASA shall repair/replace or make fully operational, the two thickeners, the Variable Frequence Drive (VFD) control panel of the pumps that transfer the sludge from the thickener to the belt press filter, and the two belt filter presses. In addition, PRASA needs to correct all the deficiencies found at the Arecibo Regional WWTP during the EPA's CEI of November 4, 2003. Within one hundred and twenty (120) calendar days of receipt of this ORDER, PRASA shall submit a certification to EPA stating that all required repairs/replacements identified in the Order have been made to the facility and are capable of full operation.