Rules Handbook, A Guide to the Rules Relating to Wells and ...

RULES HANDBOOK A GUIDE TO MINNESOTA RULES

CHAPTER 4725 WELLS AND BORINGS

March 31, 2011

INTRODUCTION

This handbook has been prepared to assist in understanding and implementing Minnesota Rules, Chapter 4725, the Rules Relating to Wells and Borings, effective August 4, 2008. Subsequent revisions to Minnesota Statutes, Chapter 103I, or Minnesota Rules, Chapter 4725, take precedence. Revisions to the law or rules are published in the State Register. The Revisor of Statutes' Web site for statutes, laws, and rules is revisor.pubs. Laws, rules, contacts, fees and other information in this handbook are current as of the printing date of this handbook, but may change. The Minnesota Department of Health (MDH), Well Management Section Web site at health.state.mn.us/divs/eh/wells is a source of current information.

HANDBOOK ORGANIZATION

The handbook is organized into the following major components: ? INTRODUCTION ? SUBJECT INDEX ? RULES AND COMMENT ? APPENDICES

The INTRODUCTION is a short description of the handbook. The introduction explains the purpose, organization, and use of the handbook, and provides background information on reading and understanding the rules.

The SUBJECT INDEX is an alphabetical subject listing for the entire handbook. The index includes key words and phrases used in the rule, rule comments, and appendices.

The RULES AND COMMENT contains the actual rule language followed by comments, annotation,

diagrams, references, and additional nonrule text. The rule language is in larger italic text that is shaded. The comments and annotation are in regular type. The comments are not intended as a

substitute for the rules or the statute. If annotated language is inconsistent with rule or statute language, the language in the statute or rule prevails.

The APPENDICES are divided into three sections. The index and materials section contains an index of the appendices, and lists of products such as pitless units, drilling fluids, and at-grade vaults, which are known to meet the standards of the rules. The rules and statutes section contains other rules or statutes which are referenced in the well and boring rules, such as Minnesota Statutes, Chapter 103I, and portions of the Minnesota Rules, Chapter 4715 (Minnesota Plumbing Code). The information section contains background information and references such as state and local government telephone numbers, annular volume tables, conversion factors, hydrogeologic information, and special well and boring construction area maps.

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READING A RULE

The entire rules document is referred to as Chapter 4725. A rule "part" is a four-digit number suffix after the chapter number (4725) and a title such as "part 4725.0475 ACTIVITIES REQUIRING LICENSURE OR REGISTRATION." A rule part, such as part 4725.0475, is divided into numbered subparts such as "Subpart 1. Activity requiring licensure or registration." or "Subpart 2. Exemptions to licensure or registration." Subparts may be divided into "items" which are given capital letters such as "A". Items can be divided into "subitems" which are given a number in parentheses such as (1). In certain instances, a rule part may be broken directly into items without subparts.

RULES ORGANIZATION

Minnesota Rules, parts 4725.0050 through 4725.0410 apply to all wells and borings regulated by the rule. Minnesota Rules, parts 4725.0475 through 4725.1810 contain requirements for certification, licensing, and registration. Minnesota Rules, parts 4725.1820 through 4725.1855 contain notification, permit, and reporting requirements. Minnesota Rules, parts 4725.2010 through 4725.3875 contain general construction and use requirements that apply to all wells and borings unless more or less restrictive standards are established in following rule parts. The remaining rule parts pertain to specific types of wells or borings. For example, Minnesota Rules, parts 4725.4050 through 4725.6050 relate to watersupply wells. Rule parts within the "water-supply well" section contain additional requirements, restrictions, or exemptions for dug wells, public water-supply wells, and remedial wells. Minnesota Rules, parts 4725.6150 to the end of the rules at Minnesota Rules, part 4725.7450, contain exemptions, restrictions or additional requirements for dewatering wells, monitoring wells, vertical heat exchangers, elevator borings, and environmental bore holes.

USE OF THE RULES

In order to determine which regulations apply to a certain type of well or boring, it is necessary to read the general requirements and any special requirements or exemptions. Specific requirements or exemptions for a particular type of well or boring supersede more general requirements. For example, to find the requirements for the construction of remedial wells, the general well and boring requirements of Minnesota Rules, parts 4725.0050 through 4725.3875 must be consulted, along with Minnesota Rules, parts 4725.4050 through 4725.6050 since remedial wells are a type of water-supply well. Minnesota Rules, part 4725.6050 is of particular importance since it contains exemptions and additional requirements for remedial wells.

These rules regulate the location, construction, repair, and sealing of wells and borings as defined in Minnesota Statutes, Chapter 103I, and Minnesota Rules, Chapter 4725. The rules also regulate the location of contamination sources, buildings, and certain utilities near wells or borings. "Wells" include, but are not limited to, private and public drinking water wells, irrigation wells, monitoring wells, dewatering wells, remedial or recovery wells, and wells used for commercial or industrial supply. "Borings" include environmental bore holes, vertical heat exchangers, and elevator borings. Exploratory borings are also a type of boring as defined in Minnesota Statutes, Chapter 103I. However, exploratory borings are regulated under Minnesota Rules, Chapter 4727, not under Chapter 4725.

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ADDITIONAL INFORMATION For further information, the Well Management Section of the MDH may be contacted. The MDH Well Management Section Web site is health.state.mn.us/divs/eh/wells. The Web site contains considerable information including fact sheets about water quality issues, well sealing, licensing, and disclosure information; and links to County Well Index (CWI); the rules and law; as well as other information. The MDH Well Management Section office locations and telephone numbers are found in the appendix. The appendix also contains a listing of counties and cities which have been delegated certain well permitting, inspection, and enforcement responsibilities from the MDH.

TRADE NAMES Trade names or models are listed for reference only. Listing of trade names or products does not constitute endorsement by the MDH or appropriateness for specific applications. The information is deemed accurate as of the date of printing; however, due to changes in product models or formulation, the reader should verify that products meet the intended use and the standards of the rule before the product is used.

FEES Fee amounts listed in this handbook are current as of the date of printing, but may change. Fees are established in Minnesota Statutes, Chapter 103I, which should be consulted.

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SUBJECT INDEX RULES HANDBOOK

A Abandoned well (also see Sealing), 72, 270, 448, 499 Abbreviations, 79-81, 463 Above-ground connections, 241-244, 331-333 Absorption area, 31, 302, 304, 308, 319 Acid treatment, 265-266 Additives, 36, 37, 40, 70, 106, 216, 221, 341, 342, 347, 387, 404 Administrative penalty order (APO), 90 Advisory areas (see Special Well and Boring Construction Area) Advisory council on wells and borings, 44, 118, 119, 440 Aggregate, 40

exploration, 48, 83 use in grouting, 235 use in sealing, 280 Agricultural chemical, 32, 247, 303, 305, 307, 311,312, 321, 444 chemical safeguards, 303, 305, 321 drain tile, 316 Agriculture department, 85, 409, 465 Air gap, 150, 191, 245-246, 248, 255, 256, 266, 365, 387, 430-431 Air test (sewer), 310, 313, 315, 337, 434-435 Alluvium (see Unconsolidated materials) American National Standards Institute (ANSI), 80, 216 American Society for Testing and Materials (ASTM), 80 Animal building, 308, 316 feedlot, 32, 51, 55, 306, 307, 318, 319 manure, 32, 55, 303, 304, 305, 306, 319 rending plant, 312 unit, 32-33, 306, 307, 308 yard, 167 Anhydrous ammonia, 304, 312 Annular space, 34, 52, 76, 180-18, 196, 222-223, 334-335, 357, 358, 370, 375, 376, 386 volume between casings, 479 volume between casing and hole, 477-478 ANSI/NSF Standard 60, 36, 38, 58, 81, 216, 219, 221, 265, 347, 397-404, 406-408 Standard 61, 81, 206, 207, 242, 332, 338 ANSI pipe schedule, 481 API, 36, 57, 66, 70, 80, 194-195, 200, 202 Appendix table of contents, 25-26 index, 395-396 Application to all wells, 83-88 Appropriation permit, 52, 71, 84, 148, 255, 370, 485 Aquifer, 34, 41, 48, 51, 55, 492-498 Aquifer interconnections, 179-181 Arsenic, 352-354, 494, 514, 554, 574-580 Artificial basin, 51

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At-grade, 35, 74, 106, 141, 142, 143, 144, 146-147, 158, 188, 244, 366, 369, 375, 377, 380-383, 392 manhole approved list, 424

B Backflow prevention (see Cross connections)

approved devices, 245-247 Backwash basin, 361 Bacteria (see Total coliform bacteria) Basalt, 35, 174 Basement, 45, 75, 167, 269, 309, 313, 314, 338, 366 369, 502-503 Basin, 55, 59, 303, 305, 306, 312, 317, 319

artificial, 48, 51, 391 Bedrock, 146, 170, 209, 210

confining layer, 40, 180-181 definition, 35-36, 76 weathered, 36 well or boring, 179-184, 209-210,228-235, 238-239, 250-254, 290-296 Below-grade connection, 242-243, 331-333 Bentonite between gravel pack and grout, 235-236 cement mixtures, 37, 57-58 chips, 225, 235, 375 definition, 37 drilling fluid, 289, 357 granular, 37, 221, 222, 228, 235-237 grout, 36-37, 221-222 grout density, 37 grout formula, 36, 221 pellets, 235, 375 Blank screen, 211 Blasted and bailed, 235, 272, 279, 280 Bond (see License/registration, bond) Bored well (see Dug well) Borehole below screen, 229 Boring, 38, 78, 83, 437 Bottled water, 85 Building distance to well or boring, 192 drain (see Footing drain), 85, 316, 337, 435 well or boring located in, 189-191 Bulk pesticide, 305, 307 Buried pressure tank, 67, 79, 267, 338 pressure tank approved list, 424 sewer, 310, 314-316 sewer testing, 315-316 slab, 198 suction line, 333-335 well or boring, 269 Business hours, 137-138

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C Canopy, 192 Cap, (see Casing, cap or cover) Casing

12 inches above grade, 147, 191, 196, 197, 198, 200, 241, 267, 269, 331-332, 340, 362, 370, 380 above flood level, 299 below ground, 197-198, 242-244, 331-332 buried seal, 269 cap or cover, 199-200, 241-244, 376, 377 centralizers, 197 concrete, 355 connections, 242-244, 331-333 couplings, 46, 193-194, 204-208, 374 definition, 38 diameter, 197, 198 driven, 46, 196, 198, 226, 228, 275, 375 dug well, 355 extension (buried well), 269 extension (pitless), 331-332 flush threaded, 193, 194, 204, 205, 243, 365, 373-374 height, 147, 191, 196, 197, 198, 200, 241, 267, 269, 331-332, 340, 362, 370, 380 inner/outer, 196-197, 198, 480 in bedrock, 209-210, 228-234 inside diameter, 197 joints, 193-194 liners, 196-197, 275 markings, 194-195 mill papers, 195 minimum depth, 327 minimum diameter, 197 multiple, 198 new, 194 offsets, 198 outer casing in unconsolidated formations, 197 perforation, 273-276 plastic, 204-210, 373-374 plastic couplings, 206-207 plastic in bedrock, 209-210 plastic threads, 207 reduction, 198 remarking, 202 removal, 267, 276 salvaged, 194 schedule, 193, 200, 206, 274, 481 specifications, 200-207, 373-374 stainless steel, 374 steel, 200-203 surface, 196, 209, 226, 358, 584 telescoped, 196, 275 temporary, 195-196, 228, 229 testing, 195 vent, 38, 241, 339-341, 362 welding, 193 Cathodic protection holes, 83, 105

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Cavernous rock, 209, 235, 280, 290-293, 350, 582, 583 Cement (also see Concrete, Neat-cement, Portland cement)

accelerators, 70, 281 bentonite mixtures, 37, 57-58 rapid setting, 70 wait on (cement), 225 Cement-sand grout, 38-39 Centralizers (see casing, centralizers) Certification, 111-118, 130-135 Certified representative, 39 Cesspool, 39-40, 307 Chapter 103I (well law, also see Law), 1, 31, 437-462 4715 (plumbing code), 66, 85-86,108, 149, 245-247,313, 314-316, 429-435 4720 (public water supply rules), 67, 359-360 7020 (feedlot rules), 32, 51, 55, 59, 303, 305, 306, 319 7080 (septic rules), 31, 53, 74, 302 Check valve, 149-150, 246, 247, 272-273, 337, 387, 432 Chemical treatment, 106, 107, 265-266, 273 Chemigation, 85, 247, 321, 326 Chlorine, 215, 265, 266, 289, 318, 333, 341, 345-350, 352, 358, 375 approved materials, 265, 347, 406-421 exemption, 265, 348 mixing table, 348-349 residual, 215 Cistern, 285, 316, 500 Clay, 34, 36, 40-42, 44, 48, 107, 173, 175, 180, 211, 249, 279, 318, 327, 328, 492 Clear water drainage, 74, 316, 317, 361 Coliform bacteria (see Total coliform bacteria) Collapse, 159, 167, 169, 196, 199, 210, 212, 222, 225, 226, 275, 371, 392 Collector sewer, 310, 314 Commissioner's orders, 89 Community public water supplies (see Public water supplies) "Completion" of wells and borings, 40, 160-161, 169-170, 195, 222, 241, 242, 350, 358 Concentric piping, 167, 334-337 Concrete, 40, 47, 80, 190, 197, 244, 277-280, 355 Conductivity, hydraulic, 34, 40-41, 44, 48, 51, 180, 391 Confining layer, 34, 40-43, 47-48, 140, 171, 179-181, 213, 229, 231, 235, 238, 249-251, 275-276 materials, 44 Contact hour, 44, 125-126 Contamination liability, 443-444, 449 sources (isolation distances), 301-326 sources placed near existing wells, 301, 449 sources removed, 302 Continuing education (see License/registration, continuing education) Conversion at-grade, 141 factors, 486-488 license, 110 public supplies, 359 wells and borings, 138, 144

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