This report summarize the results of a demonstration of optimization methods to improve the design of long-term groundwater monitoring programs. The report discusses the results of application of two different long-term groundwater monitoring optimization (LTMO) methods including:

The Monitoring and Remediation Optimization System (MAROS) software tool; and
The Three-Tiered Monitoring Network Optimization (MNO) approach.

The two methods were applied at three different sites (the Fort Lewis Logistics Center, the Long Prairie Groundwater Contamination Superfund site, and Operable Unit D at McClellan Air Force Base). The primary goals of this demonstration project were to highlight current strategies for applying optimization techniques to existing long-term monitoring programs, and to assist site managers in understanding the potential benefits associated with monitoring program optimization.

• Demonstration of Two Long-Term Groundwater Monitoring Optimization Approaches (without appendices) (PDF)(63 pp, 2 MB, 2004, 542-R-04-001a)
• Demonstration of Two Long-Term Groundwater Monitoring Optimization Approaches (with appendices) (PDF)(765 pp, 11 MB, 2004, 542-R-04-001b)