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~~~~ <br />Introduction: <br />Figure 1. Years DWR Well Standards Bulletins in Effect. 5 <br />to Water Well Standards: <br />All figures referenced in the text are in DWR Bulletin 74-81 <br />which is enclosed in the back cover of this Bulletin. <br />Well Standards: <br />~ <br />2. Monitoring Well Types. 35 <br />4. <br />5. <br />Electrolytic Corrosion of a Buried Pipeline. 58 <br />Cathodic Protection of a Buried Pipeline 59 <br />6.Cross Section of a Typical Cathodic Protection Well. 61 <br />TABLES <br />1.Deletions in Bulletin 74-81 10 <br />APPENDICES <br />A -Definition of Terms 77 <br />B -References 78 <br />78 <br />82 <br />and Regulations. 82 <br />ENCLOSURE <br />Bulletin 74-81, December 1981 Inside Back Cover <br />~; <br />xv <br />~~~ <br />Cross Sectionofa Typical Monitoring Well 36