1st Edition

Sustainable Wells Maintenance, Problem Prevention, and Rehabilitation

By Stuart A. Smith, Allen E. Comeskey Copyright 2010
    334 Pages 90 B/W Illustrations
    by CRC Press

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    No one has recorded when well digging started, but surely humans imitated elephants in digging holes in the sand to access cooler water that didn’t make the children sick. Eventually, humankind began to redesign, maintain, and repair the wells they constructed, but when wells became "commodities" in the twentieth century, this maintenance ethic was fogotten. Recapturing that ethic, Sustainable Wells: Maintenance, Problem Prevention, and Rehabilitation is a guide to keeping well systems operating at peak capacity. The book focuses on how to prevent and forestall problems, and manage the problems with wells as they age.

    Examining the many challenges that come with maintaining well performance, the book provides a comprehensive yet readable state-of-the-art summary of performance maintenance, problem prevention, and rehabilitation or restoration practice with the goal of sustaining optimal performance over the long run. Rather than focusing on a certain aspect of well cleaning, or a particular technical approach, it covers the scope of maintenance and rehabilitation, from planning to evaluation testing. It also addresses the crucial subjects of preventive design, maintenance monitoring from electrical to biofouling, and evaluation testing.

    An exploration of the subject without a vendor or strong regional bias, the book is based on the authors’ extensive hands-on experience serving well-operating clientele. In addition to water supply wells, it addresses the problems and maintenance issues of monitoring, plume control, and other "environmental" wells. Compiling information from existing literature into a single source, and combining that information with experience, the book provides recommendations based on historical performance. Copiously illustrated with approximately ninety black and white photographs, figures, and a color insert, the book reflects the changes in the profession that have occurred during the past decade or so. These features and more make this the first resource to turn to when devising solutions for maintaining and improving well performance.

    A Brief Colorful History of Well Maintenance and Rehabilitation and Their Milestones
    Some History
    The Role of the "Environmental" Sector in Shaping Well Rehabilitation and Maintenance
    The Impact of Biology on Hydrogeology and Ground Water Technology
    Economics, Human Skills, Personalities, Demographics and Other Issues
    A Word About Terminology

    Causes and Effects of Well Deterioration
    Summary: Causes of Poor Performance
    True Grit – Sand and Silt
    Yield and Drawdown Problems
    Chemical Incrustation
    Plastic Deterioration
    Biofouling – A Hitchhiker’s Guide to How Life Takes Over
    Impacts on Treatment Plants
    Engineering and Construction Aggravation of Clogging and Corrosion
    Well Structural Deformation and Failure: Natural and Human-Caused
    Disaster-Related Flooding
    Management and Operational Overview 

    Economic Impacts of Well Deterioration
    Identifying Costs of Well Deterioration
    Asset Management and Life Cycle Cost
    Assigning Economic Value
    A Costly Example
    Prevention Practice for Sustainable Wells
    Prevention – Its Place in the Well Life Cycle
    Interlude: Teeth and Motor Vehicles
    Prevention: Design and Construction Considerations
    Well Development
    Preventing Contamination During Drilling, Well Construction, and Development
    Preventive Pump Choices and Actions
    Design Aspects: The "Cliff Notes" Version
    A Note About Well Houses
    Well Array Design Recommendations
    A Developing World Note

    Maintenance Monitoring Program for Wells
    Maintenance Monitoring: Rationale for Instituting a Monitoring Program
    Maintenance Procedures Overview
    Implementing a Maintenance Program – It’s Institutional, Not Personal
    Maintenance is Personal (and Personnel), Too
    Maintenance Basics
    A Maintenance Monitoring Protocol for Wells
    Recommended Testing and Information Monitoring Methods
    Summary of Recommendations for Maintenance Monitoring in Routine Practice
    Schedule of Maintenance Monitoring Actions for Wells
    Institutional and Funding Issues in Maintenance Planning, Analysis and Execution

    Preventive Treatments and Actions
    Sand/Sediment Pumping
    What Do We Do if We Have Corrosion?
    Biofouling (General)
    Inorganic Incrustations (General)
    Preventive Chemical Treatments
    Mechanical Agitation and Augmentation
    Chemical Emplacement
    Chemical Removal and Recovery
    In-Situ Maintenance Treatments
    Further Procedural Considerations
    Health and Safety Concerns
    Costs and Time of Routine Preventive Measures 

    Rehabilitation and Reconstruction
    Decisions on Rehabilitation Methods: After Things Go Wrong
    Management and Safety in Well Rehabilitation
    Consultants and Contractors: Avoiding Trouble in Working Together
    Well Rehabilitation: Decision-Making on Methods
    Specifications for Rehabilitation
    The Role of Consultant Specifier-Observer

    Rehabilitation Methods: Technical Descriptions
    Physical Agitation
    The Pharmacopoeia: Chemical Use in Rehabilitation
    Blended Method Treatments
    Application of Rehabilitation Methods Summary
    Post-Treatment After Well Rehabilitation
    Some Follow-Up "Truisms"

    Learning and Going Forward
    Learning from the Past
    Where Do We Go from Here?


    Stuart A. Smith, Allen E. Comeskey