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Scientific Investigations Report 2005-5142

Potential for Formation of Disinfection By-Products from Storage of Chlorinated Surface Water in the Basalt Aquifer near Fallon, Nevada

By Miranda S. Fram, Douglas K. Maurer, and Michael S. Lico

Report availability: Portable Document Format (PDF).

CONTENTS

Abstract
Introduction
Purpose and Scope
Geochemical Setting
S-Line Canal
Basalt Aquifer
Experimental Methods
Sample Descriptions
Experimental Setup
Analytical Methods
Experimental Results
Unchlorinated Experiments
Chlorinated Experiments
  • Water only
  • Water and rocks
Conclusions
References Cited
Appendixes
1. Conditions and results for experiments using laboratory organic-carbon-free water
2. Conditions and results for experiments using ground water
3. Conditions and results for experiments using surface water

FIGURES

  1. Map showing location of Carson River Basin and Lahontan Valley
  2. Map showing geographic features of Lahontan Valley and location of basalt aquifer and samples
  3. Graph showing dissolved-organic-carbon (DOC) concentrations in unchlorinated samples of organic-carbon-free laboratory water, ground water from the Fallon basalt aquifer, and surface water from the S-Line Canal in Fallon, NV
  4. Graphs showing dissolved-organic-carbon (DOC) concentrations in samples of organic-carbon-free laboratory water, ground water from the Fallon basalt aquifer, and surface water from the S-Line Canal in Fallon, NV, equilibrated for 20 days with free chlorine at 25°C alone and with three different rock samples from the Fallon basalt aquifer
  5. Graphs showing trihalomethane (THM) concentrations in samples of (A) organic-carbon-free laboratory water, (B) ground water from the Fallon basalt aquifer, and (C) surface water from the S-Line Canal in Fallon, NV, equilibrated for 20 days with free chlorine at 25°C alone and with three different rock samples from the Fallon basalt aquifer

TABLES

  1. Properties of water samples used in experiments
  2. Properties of rock samples used in experiments
  3. Conditions and results for experiments using unchlorinated water
  4. Conditions and results for experiments using chlorinated water only
  5. Conditions and results for experiments using rock samples from Rattlesnake Hill and chlorinated water
  6. Conditions and results for experiments using rock samples from DB-1 and chlorinated water
  7. Conditions and results for experiments using rock samples from DB-4 and chlorinated water

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