California Water Well Standards, DWR Bulletin 74 ... - County of Glenn

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As a first step in carrying out provisions of the amended law, the State Water Resources Control Boardcontracted with DWR to:(1) Review and update water well standards in Bulletin 74-81;(2) Establish minimum standards for monitoring wells; and,(3) Update and replace cathodic protection well standards in Bulletin 74-1.This Bulletin is a supplemento Bulletin 74-81. It was developed to satisfy the Department's contract withSWRCB, to respond to Department responsibilities under the Water Code, and to keep pace with technicaladvances during the ten-year period following publication of Bulletin 74-81.An initial draft of this supplement was published in three sections and was sent to interested organizationsand individuals for comment during the Pall of 1988. The Department held public hearings in Los Angeles,November 15, 1988 and in Oakland, November 17, 1988 to discuss the draft supplemental standards andreceive public comment.Several sets of written comments for the draft supplemental standards were received by DWR. Written andverbal comments on the standards were reviewed and appropriate changes were incorporated into Final DraftBulletin 74-90, California Well Standards; Water Wells, Monitoring Wells, Cathodic Protection Wells; Supplementto Bulletin 74-81, January 1990.Final Draft Bulletin 74-90 was published in November 1989 and was sent to interested organizations andindividuals for comment. Comments were reviewed and appropriate changes were incorporated into this finalbulletin.Additional discussion on the history of DWR well standards is contained in Bulletin 74-81.Relationship of DWR Well Standards PublicationsDWR Bulletins 74-81 and 74-1 provided the Department's standards for water wells and cathodic protectionwells just prior to this supplement. DWR standards for monitoring wells were generally the same as for waterwells prior to this supplement and were included in Bulletin 74-81. The relationship of the various DWR wellstandards bulletins is illustrated in Figure 1.Revised standards for water wells in this supplement replace only portions of the water well standardscontained in Bulletin 74-81. This supplement is to be used together with Bulletin 74-81 for a completedescription of DWR Water Well Standards.Monitoring well standards are presented separately in this supplement and are in parallel form to the waterwell standards. Because many physical similarities exist between water wells and monitoring wells, the waterwell standards are referred to frequently in the monitoring well standards. Water well and monitoring wellstandards must be considered together for the construction, alteration, maintenance, and destruction ofmonitoring wells.Cathodic protection well standards in this supplement replace those in Bulletin 74-1. Because of similaritiesbetween cathodic protection wells and water wells, water wells standards are referred to frequently in thecathodic protection well standards. Cathodic protection well standards and water well standards must beconsidered together for the construction, alteration, maintenance, and destruction of cathodic protection wells.-4-
Figure 1. YEARS DWR WELL STANDARDSBULLETINSIN EFFECTrWELL TYPE1970YEARS BULLETINS IN EFFECT1980 1990I I I I I I 1 I~WATERWELLSMONITORINGWELLSCATHODICPROTECTIONWELLS/BULLETIN 74/~(1968-19~1)/BULLETIN ~74-81 1i/{1981 -BULLETIN74-1/BULLETINS74-81*&*74-90(1991 -1)* Both bulletins are now required for water well, monitoring well, and cathodic protection well standards.-5-/,
Page 1 and 2: --1#~Water wells .1Cathodic protect
Page 4 and 5: . ~~Bulletin 74-81)N. KennedyResour
Page 6 and 7: ~vState of CaliforniaPETE WILSON, G
Page 8 and 9: ~ viiForewordOrganization.TABLE OF
Page 10 and 11: ~ ix(4) Glass Fiber Reinforced Resi
Page 12 and 13: E~B. Sealing Conditions. 421. Tempo
Page 14 and 15: ~CATHODIC PROTECTION WELL STANDARDS
Page 16 and 17: 5.~Introduction:Figure 1.Years DWR
Page 19: GENERAL INTRODUCTIONImproperly cons
Page 24 and 25: .9-REVISIONS TO WATER WELL STANDARD
Page 26 and 27: ~STANDARDSPart I. GeneralSection 1.
Page 28: ~B. c.-13-Many variables are involv
Page 32 and 33: "8. 2.casing and the borehole wall
Page 34 and 35: d. ~c.water shall be used if less s
Page 36 and 37: 3. Foundation and Transition Seals.
Page 38 and 39: -23-otherwise approved by the enfor
Page 40 and 41: Thermoplastic well casing that may
Page 42 and 43: ~.Introducing.Combinationsspecifica
Page 44: ~-29-
Page 47: Advances in analytical and environm
Page 50 and 51: Nested monitoring wells consist of
Page 52 and 53: c.STANDARDSPart I.GeneralSection 1.
Page 54 and 55: 1.Part II.Monitoring Well Construct
Page 56 and 57: 1. 3.casing shall in turn be at lea
Page 58 and 59: c.Casing spacers shall be designed
Page 60 and 61: ~ 1.Section 12. Casing.The term "ca
Page 62 and 63: B. c. E.Over~um~ing and Pum~ Surgin
Page 64 and 65: 2. b.Section 19. Requirements for D
Page 66 and 67: 3. 5. E.freefall only where the int
Page 69 and 70: INTRODUCTIONMost wells in Californi
Page 72:
Many cathodic protection wells have
Page 75 and 76:
Need for Cathodic Protection Well S
Page 77 and 78:
(Division 3, Chapter 9, California
Page 79 and 80:
3. B.E. c.consolidation after place
Page 81 and 82:
for surface construction features a
Page 83 and 84:
~Part III.Destruction of Cathodic P
Page 85 and 86:
E.these standards, or standards ado
Page 88 and 89:
~APPEN DIX ADefinition of Terms-A m
Page 91:
National Association of Corrosion E
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California Water Well Standards, DWR Bulletin 74 ... - County of Glenn

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