2007 Ground Water Summit

Wednesday, May 2, 2007: 8:00 a.m.-10:20 p.m.
San Miguel (Albuquerque Convention Center)
Onsite Wastewater Management
Onsite wastewater treatment and disposal systems serve about one fourth of the homes in the United States. Many of these residences also rely on private domestic wells for water supply. Septic system effluents are frequently cited as a source of ground water contamination. Presentations will address case studies of the water quality impacts of onsite wastewater systems, ground and surface water interactions, management and modeling of contaminant loading rates, phosphorus reaction and transport modeling, denitrification and other anaerobic geochemical processes.
Moderators:Dennis M. McQuillan, B.Sc., New Mexico Environment Dept.
Bruce Thomson, Ph.D., Dept. of Civil Engineering
8:00 a.m.Water Quality Impacts from On-Site Waste Disposal Systems in the Cherry Valley Community of Interest
Kristal Davis Fadtke, Wildermuth Environmental
8:20 a.m.Effect of Lot Size, Depth to Ground Water, and Geology on Nitrate Contamination from On-Site Septic Systems
Dennis M. McQuillan, B.Sc., New Mexico Environment Dept.
8:40 a.m.Use of a Transport Simulation Model with Optimization Methods to Manage Nitrate Loading from On-Site Wastewater Treatment Systems to a Shallow Aquifer near La Pine, Oregon
David S. Morgan1, Stephen R. Hinkle1 and Barbara J. Rich2, (1)U.S. Geological Survey, (2)Deschutes County
9:00 a.m.Modeling the Effect of Discharges from On-Site Septic Systems and Sewers on Stream Nutrient Loading in Turkey Creek Watershed using WARMF Model
Mengistu Geza Nisrani, Researcher and John E. McCray, Colorado School of Mines
9:20 a.m.Reaction and Transport Modeling of Phosphorus Removal during Wastewater Infiltration using PHREEQC
Kathleen A. Lindstrom, John E. McCray and Geoffrey D. Thyne, Colorado School of Mines
9:40 a.m.A Simplified Approach for Predicting Denitrification Rates in the Sub-Surface
Maria B. Tucholke1, John E. McCray1, Geoffrey D. Thyne1 and Reagan M. Waskom2, (1)Colorado School of Mines, (2)Colorado State University
10:00 a.m.Ground Water Quality Impacts of Septic Tank Effluent in Anoxic Conditions
Dennis M. McQuillan, B.Sc., New Mexico Environment Dept. and Salvatore Misseri, M.A., P.E., New Mexico Environment Department

The 2007 Ground Water Summit