Table A-7. Summary of Desalination Costs Plant Size Capital Costs *a (1998 dollars) O&M Costs *b(1998 dollars) 3 MGD at Sand City Desalination facility: $29.2 million Cal-Am facilities: $9.0-13.4 million TOTAL: $38.2-42.6 million Seasonal operation: $2.1 million Full-time operation: $2.8 million 6 MGD at Sand City Desalination facility: $53.2 million Cal-Am facilities: $12.7-17.9 million TOTAL: $65.9-71.1 million Seasonal operation: $3.9 million Full-time operation: $5.4 million 7-14 MGD at MRWPCA or Moss Landing sites Desalination facility: $72.0-171.3 million Cal-Am facilities: $13.4-19.4 million TOTAL: $85.4-190.7 million (rounded) (see Section A.4 for detailed cost information) Seasonal operation: $4.6-9.3 million Full-time operation: $6.4-12.9 million *a Capital costs are for initial construction and do not include major replacement costs every 20–25 years. *b O&M costs are for desalination facilities only (including membrane replacement every 5 years) and do not include Cal-Am facility costs to receive and distribute water. Sources: Parsons Engineering Science 1997 (costs were escalated by 3% to 1998 price levels); American Water Works Service Company 1997 (estimated construction costs were increased by 45% [20% for contingencies and 25% for design, permitting, and construction management] and escalated by 3% to 1998 price levels).