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Natural Attenuation for Groundwater Remediation (2000)
Commission on Geosciences, Environment and Resources (CGER)

Page
XIV
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Natural Attenuation for Groundwater Remediation

3

 

SCIENTIFIC BASIS FOR NATURAL ATTENUATION

 

65

   

 Contaminants and Hydrogeologic Settings,

 

66

   

 Removal of Contaminant Sources,

 

69

   

 Movement of Contaminants in the Subsurface,

 

78

   

 Transformation of Contaminants in the Subsurface,

 

82

   

 Transformation by Microorganisms,

 

82

   

 Transformation by Chemical Reactions,

 

106

   

 Integration of the Mechanisms That Affect Subsurface Contaminants,

 

113

   

 Case Studies of Natural Attenuation,

 

115

   

 Summary: Appropriate Circumstances for Considering Natural Attenuation,

 

135

   

 Conclusions,

 

140

   

 References,

 

141

4

 

APPROACHES FOR EVALUATING NATURAL ATTENUATION

 

150

   

 Footprints of Natural Attenuation Processes,

 

151

   

 Creating a Conceptual Model,

 

154

   

 Analyzing Site Data,

 

172

   

 Monitoring the Site,

 

203

   

 Conclusions,

 

204

   

 Recommendations,

 

207

   

 References,

 

209

5

 

PROTOCOLS FOR DOCUMENTING NATURAL ATTENUATION

 

212

   

 Criteria for a Good Protocol,

 

213

   

 Overview of Protocols,

 

219

   

 Adequacy of Protocols,

 

231

   

 Adequacy of Decision-Making Tools,

 

241

   

 Adequacy of Training,

 

244

   

 Adequacy of Policies Concerning Use of Protocols,

 

248

   

 Conclusions,

 

250

   

 Recommendations,

 

252

   

 References,

 

253

 

 

APPENDIXES

 

 

A

 

ACRONYMS

 

255

B

 

PRESENTERS AT THE COMMITTEE’S INFORMATION-GATHERING MEETINGS

 

257

C

 

BIOGRAPHICAL SKETCHES OF COMMITTEE MEMBERS AND STAFF

 

259

 

 

INDEX

 

265

Page
XIV