sentences:  The upgrades also increased capacity 25% to 5.5 million gallons per day (MGD) (14,474 liters per hour).Although presently a traditional biological nutrient removal (BNR) plant capable of meeting the interim phosphorus limit, pilot tests have proven a chemical nutrient removal (CNR) and membrane biological reactor combination to be effective well below the possible future permit limit.However, due to the high cost, these phases have been delayed.