- ISBN: 9780849375767 | 0849375762
- Cover: Hardcover
- Copyright: 11/4/2009
List of Tables and Figures | p. xiii |
Disclaimer | p. xxi |
Preface | p. xxiii |
Authors | p. xxvii |
Acknowledgments | p. xxix |
A Brief Colorful History of Well Maintenance and Rehabilitation and Their Milestones | p. 1 |
Some History | p. 1 |
The Role of the "Environmental" Sector in Shaping Well Rehabilitation and Maintenance | p. 5 |
The Impact of Biology on Hydrogeology and Ground-Water Technology | p. 6 |
Economics, Human Skills, Personalities, Demographics, and Other Issues | p. 8 |
A Word about Terminology | p. 11 |
Causes and Effects of Well Deterioration | p. 13 |
Summary: Causes of Poor Performance | p. 13 |
True Grit-Sand and Silt | p. 13 |
Yield and Drawdown Problems | p. 17 |
Chemical Incrustation | p. 20 |
Corrosion | p. 22 |
Plastic Deterioration | p. 26 |
Biofouling-A Hitchhiker's Guide to How Life Takes Over | p. 26 |
Biofilm and Biofouling Basics | p. 27 |
Biofilms and Microbial Survival | p. 29 |
Biofilm Function and Ecological Function | p. 30 |
Biofilms and Biofouling in Ground Water | p. 30 |
Water Quality Degradation: Monitoring and Remediation Problems | p. 33 |
Microbially Mediated Metallic Corrosion | p. 37 |
Iron, Manganese, and Sulfur Biofouling | p. 39 |
Fe, Mn, and S Biofouling: What's Happening | p. 39 |
How Fe, Mn, and S Biofouling Occurs | p. 40 |
The Redox Fringe | p. 42 |
Effects on Performance of Well Systems: A Summary | p. 43 |
Hydraulic Impacts | p. 46 |
Sample Quality in Monitoring Wells | p. 47 |
ASR Well Systems | p. 47 |
Health Concerns Relating to Biofouling | p. 48 |
Pathogens | p. 48 |
Toxic Accumulation | p. 49 |
Chlorination of Organic Chemicals | p. 49 |
Impacts on Treatment Plants | p. 49 |
Engineering and Construction Aggravation of Clogging and Corrosion | p. 50 |
Well Structural Deformation and Failure: Natural and Human Caused | p. 51 |
Natural | p. 51 |
Earthquakes | p. 51 |
Mass Wasting | p. 53 |
Human Induced | p. 55 |
Mining | p. 55 |
Mine Blasting | p. 56 |
Grouting | p. 57 |
Casing Weight/Quality/Integrity/Engineering Issues | p. 59 |
Improper Rehabilitation and Development Methods, and Other Abuses of Wells | p. 61 |
Electrochemical Corrosion from Stray Potentials | p. 62 |
And Other Factors | p. 63 |
Disaster-Related Flooding | p. 64 |
Management and Operational Overview | p. 65 |
Economic Impacts of Well Deterioration | p. 67 |
Identifying Costs of Well Deterioration | p. 67 |
Defining Economic Parameters | p. 67 |
Types and Dimensions of Costs of Well Operation and Service | p. 69 |
Asset Management and Life Cycle Cost | p. 73 |
Asset Management Features of Well Systems | p. 74 |
Life Cycle Costs | p. 75 |
Assigning Economic Value | p. 76 |
Water Supply EV | p. 77 |
Other Environmental EV | p. 77 |
Government Accounting Valuation of Assets | p. 78 |
A Costly Example | p. 78 |
Prevention Practices for Sustainable Wells | p. 81 |
Prevention-its Place in the Well Life Cycle | p. 81 |
Interlude: Teeth and Motor Vehicles | p. 82 |
Prevention: Design and Construction Considerations | p. 84 |
Planning Considerations | p. 84 |
Role of Well Purpose | p. 86 |
Well Design | p. 86 |
Casing for Well Completion | p. 87 |
Well Hydraulics and Efficiency-General Considerations | p. 89 |
Well Screens and Intakes | p. 90 |
Screen Design | p. 91 |
Screen and Filter Pack Material Selection | p. 91 |
Grouting and Well Sealing | p. 93 |
Well Development | p. 94 |
Reasons for Development | p. 94 |
Development Method Descriptions | p. 95 |
Overpumping | p. 96 |
Surging and Pumping or Bailing (Utilizing Surge Block) | p. 96 |
Airlift Development | p. 99 |
Jetting | p. 100 |
"Conventional" Development Choices | p. 102 |
Fluid-Pulse Development | p. 104 |
Other Care Issues in Development and Redevelopment | p. 105 |
Preventing Contamination during Drilling, Well Construction, and Development | p. 105 |
Preventative Pump Choices and Actions | p. 106 |
Pump Selection | p. 107 |
Pumps in Water Supply and Other Extraction (or Abstraction) Wells | p. 107 |
Pumps in Monitoring Wells | p. 108 |
Pump Protection | p. 110 |
Design Aspects: The "Cliff Notes" Version | p. 113 |
A Note about Well Houses | p. 114 |
Well Array Design Recommendations | p. 115 |
A Developing World Note | p. 116 |
Maintenance Monitoring Programs for Wells | p. 119 |
Maintenance Monitoring: Rationale for Instituting a Monitoring Program | p. 119 |
Maintenance Procedures Overview | p. 122 |
Implementing a Maintenance Program-it's Institutional, Not Personal | p. 122 |
Maintenance is Personal (and Personnel), Too | p. 122 |
Maintenance Basics | p. 123 |
Well System Maintenance Records | p. 123 |
Maintenance Monitoring for Performance and Water Quality | p. 124 |
Maintenance Actions and Treatments | p. 125 |
A Maintenance Monitoring Protocol for Wells | p. 126 |
Purposes of Maintenance Monitoring | p. 127 |
Background for Current Monitoring Recommendations | p. 127 |
Deciding How to Monitor | p. 128 |
Incorporating PM Data Collection into the Facility Data Collection Effort | p. 130 |
Recommended Testing and Information Monitoring Methods | p. 130 |
Visual and Other Sensory Examination | p. 130 |
Well and Pump Performance | p. 131 |
Benchmarking | p. 132 |
Compare Apples with Apples | p. 136 |
Monitoring Pump and Pump Motor Performance | p. 137 |
Tracking Well Performance | p. 137 |
Water Level Measurement Recommendations | p. 139 |
Well Discharge Measurement | p. 139 |
Pressure Measurement | p. 141 |
Electrical (Power) | p. 141 |
Water Sampling | p. 142 |
Physicochemical Analyses | p. 142 |
Biological Monitoring: Decision Making | p. 143 |
Whether to Monitor for Biofouling | p. 144 |
Biofouling Monitoring: What Methods to Choose | p. 144 |
A Note about the Current State of the Art in Well Maintenance Monitoring Methods | p. 144 |
Biofouling Monitoring Methods: Analysis | p. 145 |
Microscopic Examination and Analysis | p. 145 |
Culturing Methods | p. 146 |
How Minimal Can Testing Be? | p. 149 |
Biofouling Monitoring Methods: Sampling Methods | p. 151 |
Pumped Sampling | p. 151 |
Surface Collection on Slides or Coupons | p. 152 |
Representativeness of Collection Sampling | p. 153 |
Electrochemical in-line Sensors | p. 155 |
Summary of Recommendations for Maintenance Monitoring in Routine Practice | p. 156 |
Summary of Data Collection Requirements | p. 156 |
Well Data File Features | p. 156 |
Pumping Rates | p. 157 |
System Pressure | p. 157 |
Water Level Data | p. 157 |
Electrical (Power) Data | p. 158 |
Video for Historical Comparison | p. 158 |
Hydrogeologic Information That Should Be on File | p. 158 |
Piezometric Data | p. 158 |
Piezometric Maps | p. 159 |
Geologic Regime | p. 159 |
Development Data | p. 159 |
Maintenance Logs for Individual Wells | p. 161 |
Where Records Should Be Kept | p. 161 |
Downtime History | p. 161 |
File Records Purpose and Format Issues | p. 162 |
Schedule of Maintenance Monitoring Actions for Wells | p. 163 |
Minimum Regular Schedule for First Year | p. 163 |
Schedule for Reducing Maintenance Monitoring after First Year | p. 163 |
Rationale and Commentary | p. 165 |
Institutional and Funding Issues in Maintenance Planning, Analysis, and Execution | p. 165 |
Background and Barriers to Effective Maintenance Implementation | p. 165 |
Institutional Needs for Effective Implementations | p. 167 |
Quarterly Review of Facility Performance Data | p. 168 |
Baseline and Historical Data for Wells/Site | p. 168 |
Operator/Working Crew Leader Qualifications and Training | p. 169 |
Determination of Operational Maintenance Responsibilities | p. 170 |
Preventive Treatments and Actions | p. 171 |
Sand/Sediment Pumping | p. 171 |
What Do We Do if We Have Corrosion? | p. 172 |
Biofouling (General) | p. 174 |
Inorganic Encrustations (General) | p. 174 |
Preventive Chemical Treatments | p. 174 |
General: Cost-Effectiveness, Professionalism | p. 174 |
Cost-Effectiveness | p. 175 |
Professionalism | p. 176 |
Chemical Classes and Properties | p. 176 |
Acids for Maintenance Treatment | p. 176 |
Biocides and Oxidizing Compounds | p. 176 |
Penetrating, Sequestering, and Dispersing Agents | p. 181 |
Blended Method Treatments | p. 181 |
Use and Interpretation of MSDSs | p. 182 |
Compatibility with Well Cleaning Chemicals | p. 183 |
Mechanical Agitation and Augmentation | p. 183 |
Chemical Emplacement | p. 184 |
Chemical Removal and Recovery | p. 184 |
In Situ Maintenance Treatment Techniques | p. 185 |
Chemical Feeders in Wells | p. 185 |
Radiation-That Gentle Glow | p. 185 |
Application of Electromagnetically Charged Surfaces | p. 186 |
CO2 Well Environment Adjustment-Making the Environment Inhospitable for Biofouling | p. 186 |
Further Procedural Requirements | p. 187 |
Regulatory Aspects | p. 187 |
Biofouling Recurrence | p. 187 |
Health and Safety Concerns | p. 187 |
Health and Safety Plan | p. 187 |
Level of Protection for Mixing and Well Application | p. 188 |
Chemical Handling Hazards | p. 188 |
Mixing Chemicals-Personal Safety Aspects | p. 188 |
Costs and Time of Routine Preventive Measurements | p. 189 |
Maintenance Cost-Benefit Analysis | p. 189 |
Cost-Benefit Analysis: A Spreadsheet Approach | p. 189 |
The Heartbreak of Well Failure: An Overriding Weighting Factor | p. 190 |
Costs of Maintenance Activities | p. 192 |
Maintenance Monitoring Costs-Typical | p. 192 |
Preventive Treatment Costs | p. 194 |
Improving Cost-Effectiveness in Maintenance | p. 194 |
Rehabilitation and Reconstruction Planning | p. 197 |
Decisions on Rehabilitation Methods: After Things Go Wrong | p. 197 |
Management and Safety in Well Rehabilitation | p. 198 |
Facility Management Considerations | p. 198 |
Responsibility for the Work | p. 199 |
Getting the Job Done | p. 200 |
Safety and Productivity in Well Rehabilitation Work | p. 201 |
Safety Assurance | p. 201 |
Facilitating Productivity | p. 202 |
Rehabilitation Contractor Considerations | p. 203 |
Safety: What the Contractor Needs to Have and Know | p. 203 |
Practical Stuff: Access and Response | p. 205 |
Contractors and Consultants: Avoiding Trouble in Working Together | p. 208 |
Mutual Respect in Rehabilitation Work | p. 208 |
Specifications: Business and Bidding Considerations | p. 208 |
Specification Pitfalls | p. 208 |
Overcoming Pitfalls | p. 209 |
Effluent Waste Water Containment | p. 210 |
Well Rehabilitation: Decision Making on Methods | p. 210 |
To Rehab or Not to Rehab? That is the Question | p. 210 |
The Costs of Well Rehabilitation | p. 213 |
The Cost of Doing Nothing | p. 213 |
Costs for Serious Rehabilitation Work | p. 214 |
Contractor Pricing of Rehabilitation Work | p. 215 |
Choosing Rehabilitation Methods | p. 216 |
Damage | p. 217 |
Issues in Rehabilitation Chemical Selection | p. 218 |
Reconstruction | p. 220 |
Specifications for Rehabilitation | p. 221 |
Specification Deficiencies | p. 221 |
What Well Rehabilitation Specifications Should Have | p. 225 |
Selecting Well Rehabilitation Bids | p. 226 |
The Role of Consultant Specifier-Observer | p. 227 |
Rehabilitation Methods | p. 229 |
Technical Descriptions | p. 229 |
Physical Agitation | p. 229 |
Basic Principles | p. 229 |
"Conventional" Redevelopment | p. 229 |
Other or Advanced Physical Redevelopment Methods | p. 231 |
Cold CO2Treatment | p. 231 |
Sonic/Vibratory Disruption-"Use the Force, Luke!" | p. 233 |
Fluid-Pulse Tools | p. 236 |
The Pharmacopoeia: Chemical Use in Rehabilitation | p. 240 |
Overview | p. 240 |
Acidizing | p. 243 |
Types of Acid Compounds | p. 243 |
Using Acidizing in Well Treatment | p. 245 |
Sequestering and Other PSDD Functions | p. 247 |
Antibacterial (Antimicrobial) Agents | p. 248 |
Chlorination | p. 248 |
Alternatives to Chlorine as Oxidants for Biofouling | p. 252 |
Blended Method Treatments | p. 254 |
Application of Rehabilitation Methods Summary | p. 256 |
Posttreatment after Well Rehabilitation | p. 257 |
Some Follow-up "Truisms" | p. 257 |
Learning and Going Forward | p. 263 |
Learning from the Past | p. 263 |
Where Do We Go from Here? | p. 264 |
Wish List | p. 265 |
Education, Communication, and Mutual Respect: Human Issues in Well Maintenance | p. 266 |
Recommended Reading List | p. 269 |
Recommended Reading List | p. 269 |
Selected References | p. 272 |
Selected Relevant Standards | p. 277 |
ANSI/ASTM Standards (a selection) | p. 278 |
Index | p. 279 |
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