Cal. Code Regs. tit. 22, § 60101 – Specific Activities Within Categorical Exempt Classes.

(a) Class 1: Existing Facilities.
1. (1) Any interior or exterior alteration of water treatment units, water supply systems, and pump station buildings where the alteration involves the addition, deletion, or modification of mechanical, electrical, or hydraulic controls.
2. (2) Maintenance, repair, replacement, or reconstruction to any water treatment process units, including structures, filters, pumps, and chlorinators.
(b) Class 2: Replacement or Reconstruction.
1. (1) Repair or replacement of any water service connections, meters, and valves for backflow prevention, air release, pressure regulating, shut-off and blow-off or flushing.
2. (2) Replacement or reconstruction of any existing water supply distribution lines, storage tanks and reservoirs of substantially the same size.
3. (3) Replacement or reconstruction of any water wells, pump stations and related appurtenances.
(c) Class 3: New Construction of Small Structures.
1. (1) Construction of any water supply and distribution lines of less than sixteen inches in diameter, and related appurtenances.
2. (2) Construction of any water storage tanks and reservoirs of less than 100,000 gallon capacity.
(d) Class 4: Minor Alterations to Land.
1. (1) Minor alterations to land, water, or vegetation on any officially existing designated wildlife management areas or fish production facilities for the purpose of reducing the environmental potential for nuisances or vector production.
2. (2) Any minor alterations to highway crossings for water supply and distribution lines.
  CROSS-REFERENCE TABLE
  NOTE: Sections in Chapters 1 and 2 of Division 4 were renumbered by an order filed 5-1-79 which created a new Chapter 30. The following cross-reference table showing old and new section numbers is provided for research purposes.
  __________
  * Those sections which were amended by the 5-1-79 order are asterisked.
  OLD SECTION
  NEW SECTION
  60091
  66016
  60093
  66020
  60095
  66024
  60102
  66028
  60103
  66032
  60104
  66036
  60105
  66040
  60106
  66048
  60107
  66052
  60108
  66056
  60109
  66060
  60110
  66064
  60111
  66068
  60112
  66072
  60113
  66076
  60114
  66080
  60115
  66084
  60116
  66088
  60117
  66092
  60118
  66096
  60119
  66100
  60120
  66104
  60121
  66108
  60122
  66120*
  60123
  66124
  60124
  66128
  60125
  66132
  60127
  66136
  60127
  66136
  60128
  66140
  60129
  66144
  60130
  66148
  60131
  66160
  60133
  66164
  60135
  66176
  60137
  66180
  60139
  66184
  60141
  66188
  60143
  66196
  60145
  66200
  60147
  66204
  60149
  66208
  60151
  66212
  60153
  66216
  60155
  66220
  60157
  66224
  60159
  66228
  60161
  66232
  60163
  66236
  60165
  66240
  60167
  66300
  60169
  66305
  60171
  66310
  60173
  66315
  60175
  66320
  60177
  66328
  60179
  66336
  60181
  66344
  60185
  66352
  60187
  66360
  60189
  66370
  60191
  66084*
  60193
  66376*
  60195
  66379*
  60197
  66391
  60199
  66384
  60201
  66387*
  60203
  66390*
  60205
  66393*
  60207
  66396*
  60209
  66399
  60211
  66402
  60213
  66405
  60215
  66408
  60217
  66420
  60219
  66428
  60221
  66436*
  60223
  66444*
  60225
  66452*
  60227
  66460
  60229
  66470
  60231
  66475
  60233
  66480
  60235
  66485*
  60237
  66490*
  60239
  66495
  60241
  66500
  60243
  66505
  60245
  66510*
  60247
  66520
  60249
  66525
  60251
  66530
  60253
  66535*
  60255
  66540*
  60257
  66545
  60259
  66550
  60261
  66555
  60263
  66560
  60265
  66570
  60267
  66595
  60269
  66620
  60271
  66645
  60273
  66670*
  60275
  66672
  60277
  66674
  60279
  66676
  60281
  66680
  60283
  66685
  60285
  66880
  60287
  66683
  60289
  66886
  60291*
  66889*
  60293
  66892
  60295
  66895
  60297
  66898*

The following specific activities are determined by the Department to fall within the classes of categorical exemptions set forth in Sections 15300 et seq. of Title 14 of the California Administrative Code:

Note: Authority cited: Section 208, Health and Safety Code; Section 21082, Public Resources Code; and Sections 15022(a) and 15300.4, Title 14, Division 6, California Administrative Code. Reference: Sections 15301, 15302, 15303, 15304 and 15308, Public Resources Code.