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August 14, 2023 Packet Pg. 312
Environmental Analysis and Findings Page 34
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August 14, 2023 Packet Pg. 313
Environmental Analysis and Findings Page 35
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August 14, 2023 Packet Pg. 314
Environmental Analysis and Findings Page 36
642 Quarry Road Project City of San Carlos
Initial Study November 2022
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10.i
August 14, 2023 Packet Pg. 315
Environmental Analysis and Findings Page 37
642 Quarry Road Project City of San Carlos
Initial Study November 2022
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August 14, 2023 Packet Pg. 316
Environmental Analysis and Findings Page 38
642 Quarry Road Project City of San Carlos
Initial Study November 2022
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August 14, 2023 Packet Pg. 317
Environmental Analysis and Findings Page 39
642 Quarry Road Project City of San Carlos
Initial Study November 2022
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August 14, 2023 Packet Pg. 318
Environmental Analysis and Findings Page 40
642 Quarry Road Project City of San Carlos
Initial Study November 2022
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10.i
August 14, 2023 Packet Pg. 319
Environmental Analysis and Findings Page 41
642 Quarry Road Project City of San Carlos
Initial Study November 2022
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August 14, 2023 Packet Pg. 320
Environmental Analysis and Findings Page 42
642 Quarry Road Project City of San Carlos
Initial Study November 2022
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August 14, 2023 Packet Pg. 321
Environmental Analysis and Findings Page 43
642 Quarry Road Project City of San Carlos
Initial Study November 2022
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Environmental Analysis and Findings Page 47
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August 14, 2023 Packet Pg. 326
Environmental Analysis and Findings Page 48
642 Quarry Road Project City of San Carlos
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August 14, 2023 Packet Pg. 327
Environmental Analysis and Findings Page 49
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Environmental Analysis and Findings Page 53
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Environmental Analysis and Findings Page 54
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August 14, 2023 Packet Pg. 333
Environmental Analysis and Findings Page 55
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August 14, 2023 Packet Pg. 334
Environmental Analysis and Findings Page 56
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Initial Study November 2022
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August 14, 2023 Packet Pg. 335
Environmental Analysis and Findings Page 57
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10.i
August 14, 2023 Packet Pg. 336
Environmental Analysis and Findings Page 58
642 Quarry Road Project City of San Carlos
Initial Study November 2022
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10.i
August 14, 2023 Packet Pg. 337
Environmental Analysis and Findings Page 59
642 Quarry Road Project City of San Carlos
Initial Study November 2022
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10.i
August 14, 2023 Packet Pg. 338
Environmental Analysis and Findings Page 60
642 Quarry Road Project City of San Carlos
Initial Study November 2022
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10.i
August 14, 2023 Packet Pg. 339
Environmental Analysis and Findings Page 61
642 Quarry Road Project City of San Carlos
Initial Study November 2022
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10.i
August 14, 2023 Packet Pg. 340
Environmental Analysis and Findings Page 62
642 Quarry Road Project City of San Carlos
Initial Study November 2022
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10.i
August 14, 2023 Packet Pg. 341
Environmental Analysis and Findings Page 63
642 Quarry Road Project City of San Carlos
Initial Study November 2022
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10.i
August 14, 2023 Packet Pg. 342
Environmental Analysis and Findings Page 64
642 Quarry Road Project City of San Carlos
Initial Study November 2022
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August 14, 2023 Packet Pg. 343
Environmental Analysis and Findings Page 65
642 Quarry Road Project City of San Carlos
Initial Study November 2022
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August 14, 2023 Packet Pg. 344
Environmental Analysis and Findings Page 66
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Initial Study November 2022
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August 14, 2023 Packet Pg. 345
Environmental Analysis and Findings Page 67
642 Quarry Road Project City of San Carlos
Initial Study November 2022
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Environmental Analysis and Findings Page 68
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Environmental Analysis and Findings Page 69
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August 14, 2023 Packet Pg. 348
Environmental Analysis and Findings Page 70
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Initial Study November 2022
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August 14, 2023 Packet Pg. 349
Environmental Analysis and Findings Page 71
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Initial Study November 2022
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August 14, 2023 Packet Pg. 350
Environmental Analysis and Findings Page 72
642 Quarry Road Project City of San Carlos
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August 14, 2023 Packet Pg. 351
Environmental Analysis and Findings Page 73
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Initial Study November 2022
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August 14, 2023 Packet Pg. 353
Environmental Analysis and Findings Page 75
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August 14, 2023 Packet Pg. 354
Environmental Analysis and Findings Page 76
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August 14, 2023 Packet Pg. 355
Environmental Analysis and Findings Page 77
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Initial Study November 2022
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August 14, 2023 Packet Pg. 356
Environmental Analysis and Findings Page 78
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August 14, 2023 Packet Pg. 357
Environmental Analysis and Findings Page 79
642 Quarry Road Project City of San Carlos
Initial Study November 2022
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10.i
August 14, 2023 Packet Pg. 358
Environmental Analysis and Findings Page 80
642 Quarry Road Project City of San Carlos
Initial Study November 2022
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10.i
August 14, 2023 Packet Pg. 359
Environmental Analysis and Findings Page 81
642 Quarry Road Project City of San Carlos
Initial Study November 2022
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10.i
August 14, 2023 Packet Pg. 360
Environmental Analysis and Findings Page 82
642 Quarry Road Project City of San Carlos
Initial Study November 2022
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10.i
August 14, 2023 Packet Pg. 361
Environmental Analysis and Findings Page 83
642 Quarry Road Project City of San Carlos
Initial Study November 2022
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August 14, 2023 Packet Pg. 362
Environmental Analysis and Findings Page 84
642 Quarry Road Project City of San Carlos
Initial Study November 2022
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August 14, 2023 Packet Pg. 363
Environmental Analysis and Findings Page 85
642 Quarry Road Project City of San Carlos
Initial Study November 2022
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10.i
August 14, 2023 Packet Pg. 364
Environmental Analysis and Findings Page 86
642 Quarry Road Project City of San Carlos
Initial Study November 2022
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10.i
August 14, 2023 Packet Pg. 365
Environmental Analysis and Findings Page 87
642 Quarry Road Project City of San Carlos
Initial Study November 2022
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10.i
August 14, 2023 Packet Pg. 366
Environmental Analysis and Findings Page 88
642 Quarry Road Project City of San Carlos
Initial Study November 2022
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August 14, 2023 Packet Pg. 367
Environmental Analysis and Findings Page 89
642 Quarry Road Project City of San Carlos
Initial Study November 2022
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August 14, 2023 Packet Pg. 368
Environmental Analysis and Findings Page 90
642 Quarry Road Project City of San Carlos
Initial Study November 2022
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August 14, 2023 Packet Pg. 369
Environmental Analysis and Findings Page 91
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August 14, 2023 Packet Pg. 370
Environmental Analysis and Findings Page 92
642 Quarry Road Project City of San Carlos
Initial Study November 2022
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10.i
August 14, 2023 Packet Pg. 371
Environmental Analysis and Findings Page 93
642 Quarry Road Project City of San Carlos
Initial Study November 2022
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Environmental Analysis and Findings Page 94
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Initial Study November 2022
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August 14, 2023 Packet Pg. 373
Environmental Analysis and Findings Page 95
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August 14, 2023 Packet Pg. 374
Environmental Analysis and Findings Page 96
642 Quarry Road Project City of San Carlos
Initial Study November 2022
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10.i
August 14, 2023 Packet Pg. 375
Environmental Analysis and Findings Page 97
642 Quarry Road Project City of San Carlos
Initial Study November 2022
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Environmental Analysis and Findings Page 98
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Environmental Analysis and Findings Page 99
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August 14, 2023 Packet Pg. 379
Environmental Analysis and Findings Page 101
642 Quarry Road Project City of San Carlos
Initial Study November 2022
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August 14, 2023 Packet Pg. 380
Environmental Analysis and Findings Page 102
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Initial Study November 2022
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August 14, 2023 Packet Pg. 381
Environmental Analysis and Findings Page 103
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Initial Study November 2022
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August 14, 2023 Packet Pg. 382
Environmental Analysis and Findings Page 104
642 Quarry Road Project City of San Carlos
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August 14, 2023 Packet Pg. 383
Environmental Analysis and Findings Page 105
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Initial Study November 2022
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August 14, 2023 Packet Pg. 384
Environmental Analysis and Findings Page 106
642 Quarry Road Project City of San Carlos
Initial Study November 2022
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August 14, 2023 Packet Pg. 385
Environmental Analysis and Findings Page 107
642 Quarry Road Project City of San Carlos
Initial Study November 2022
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August 14, 2023 Packet Pg. 386
Environmental Analysis and Findings Page 108
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August 14, 2023 Packet Pg. 387
Environmental Analysis and Findings Page 109
642 Quarry Road Project City of San Carlos
Initial Study November 2022
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August 14, 2023 Packet Pg. 388
Environmental Analysis and Findings Page 110
642 Quarry Road Project City of San Carlos
Initial Study November 2022
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10.i
August 14, 2023 Packet Pg. 389
Environmental Analysis and Findings Page 111
642 Quarry Road Project City of San Carlos
Initial Study November 2022
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August 14, 2023 Packet Pg. 393
Environmental Analysis and Findings Page 115
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August 14, 2023 Packet Pg. 394
Environmental Analysis and Findings Page 116
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August 14, 2023 Packet Pg. 395
Environmental Analysis and Findings Page 117
642 Quarry Road Project City of San Carlos
Initial Study November 2022
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August 14, 2023 Packet Pg. 396
Environmental Analysis and Findings Page 118
642 Quarry Road Project City of San Carlos
Initial Study November 2022
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10.i
August 14, 2023 Packet Pg. 397
Environmental Analysis and Findings Page 119
642 Quarry Road Project City of San Carlos
Initial Study November 2022
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10.i
August 14, 2023 Packet Pg. 398
Environmental Analysis and Findings Page 120
642 Quarry Road Project City of San Carlos
Initial Study November 2022
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Environmental Analysis and Findings Page 121
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Environmental Analysis and Findings Page 122
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August 14, 2023 Packet Pg. 404
Environmental Analysis and Findings Page 126
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August 14, 2023 Packet Pg. 405
Environmental Analysis and Findings Page 127
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Initial Study November 2022
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Environmental Analysis and Findings Page 128
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August 14, 2023 Packet Pg. 407
Environmental Analysis and Findings Page 129
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August 14, 2023 Packet Pg. 408
Environmental Analysis and Findings Page 130
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Initial Study November 2022
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August 14, 2023 Packet Pg. 409
Environmental Analysis and Findings Page 131
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Initial Study November 2022
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August 14, 2023 Packet Pg. 410
Environmental Analysis and Findings Page 132
642 Quarry Road Project City of San Carlos
Initial Study November 2022
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10.i
August 14, 2023 Packet Pg. 411
Environmental Analysis and Findings Page 133
642 Quarry Road Project City of San Carlos
Initial Study November 2022
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10.i
August 14, 2023 Packet Pg. 412
Environmental Analysis and Findings Page 134
642 Quarry Road Project City of San Carlos
Initial Study November 2022
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10.i
August 14, 2023 Packet Pg. 413
Environmental Analysis and Findings Page 135
642 Quarry Road Project City of San Carlos
Initial Study November 2022
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10.i
August 14, 2023 Packet Pg. 414
Environmental Analysis and Findings Page 136
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10.i
August 14, 2023 Packet Pg. 415
Environmental Analysis and Findings Page 137
642 Quarry Road Project City of San Carlos
Initial Study November 2022
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10.i
August 14, 2023 Packet Pg. 416
Environmental Analysis and Findings Page 138
642 Quarry Road Project City of San Carlos
Initial Study November 2022
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10.i
August 14, 2023 Packet Pg. 417
Environmental Analysis and Findings Page 139
642 Quarry Road Project City of San Carlos
Initial Study November 2022
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10.i
August 14, 2023 Packet Pg. 418
Environmental Analysis and Findings Page 140
642 Quarry Road Project City of San Carlos
Initial Study November 2022
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10.i
August 14, 2023 Packet Pg. 419
Environmental Analysis and Findings Page 141
642 Quarry Road Project City of San Carlos
Initial Study November 2022
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Environmental Analysis and Findings Page 142
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Environmental Analysis and Findings Page 143
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August 14, 2023 Packet Pg. 422
Environmental Analysis and Findings Page 144
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August 14, 2023 Packet Pg. 423
Environmental Analysis and Findings Page 145
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August 14, 2023 Packet Pg. 424
Environmental Analysis and Findings Page 146
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Environmental Analysis and Findings Page 161
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August 14, 2023 Packet Pg. 440
Environmental Analysis and Findings Page 162
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Environmental Analysis and Findings Page 163
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Environmental Analysis and Findings Page 164
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August 14, 2023 Packet Pg. 444
Environmental Analysis and Findings Page 166
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August 14, 2023 Packet Pg. 445
Environmental Analysis and Findings Page 167
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Initial Study November 2022

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August 14, 2023 Packet Pg. 446
Environmental Analysis and Findings Page 168
642 Quarry Road Project City of San Carlos
Initial Study November 2022

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August 14, 2023 Packet Pg. 447
Environmental Analysis and Findings Page 169
642 Quarry Road Project City of San Carlos
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10.i
August 14, 2023 Packet Pg. 448
Environmental Analysis and Findings Page 170
642 Quarry Road Project City of San Carlos
Initial Study November 2022
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10.i
August 14, 2023 Packet Pg. 449
Environmental Analysis and Findings Page 171
642 Quarry Road Project City of San Carlos
Initial Study November 2022
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10.i
August 14, 2023 Packet Pg. 450
Environmental Analysis and Findings Page 172
642 Quarry Road Project City of San Carlos
Initial Study November 2022
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10.i
August 14, 2023 Packet Pg. 451
Environmental Analysis and Findings Page 173
642 Quarry Road Project City of San Carlos
Initial Study November 2022
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10.i
August 14, 2023 Packet Pg. 452
Environmental Analysis and Findings Page 174
642 Quarry Road Project City of San Carlos
Initial Study November 2022
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10.i
August 14, 2023 Packet Pg. 453
Environmental Analysis and Findings Page 175
642 Quarry Road Project City of San Carlos
Initial Study November 2022
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10.i
August 14, 2023 Packet Pg. 454
Environmental Analysis and Findings Page 176
642 Quarry Road Project City of San Carlos
Initial Study November 2022
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10.i
August 14, 2023 Packet Pg. 455
Environmental Analysis and Findings Page 177
642 Quarry Road Project City of San Carlos
Initial Study November 2022
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10.i
August 14, 2023 Packet Pg. 456
Environmental Analysis and Findings Page 178
642 Quarry Road Project City of San Carlos
Initial Study November 2022
This page is intentionally blank.

10.i
August 14, 2023 Packet Pg. 457
References Page 179
642 Quarry Road Project City of San Carlos
Initial Study November 2022
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10.i
August 14, 2023 Packet Pg. 458
References Page 180
642 Quarry Road Project City of San Carlos
Initial Study November 2022
This page is intentionally blank

10.i
August 14, 2023 Packet Pg. 459
Appendix A
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10.i
August 14, 2023 Packet Pg. 460

10.i
August 14, 2023 Packet Pg. 461

10.i
August 14, 2023 Packet Pg. 462
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LEGENDApproximate Property Boundary
Fence

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k mont Cree Bel
Old County Road
Road Quarry

X X X X
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X X X X
X
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9053 SQ. FT.
16726 SQ. FT.
3719 SQ. FT.
3322 SQ. FT.
3141 SQ. FT.
2984 SQ. FT. 4 SQ. FT.
5243 SQ. FT.
8163 SQ. FT.
7778 SQ. FT. 7 11597 SQ. FT.
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10.i
August 14, 2023 Packet Pg. 463

10.i
August 14, 2023 Packet Pg. 464
Mitigation Monitoring and Reporting Program 1
642 Quarry Road Life Science Project April 2023
City of San Carlos

MITIGATION MONITORING AND REPORTING PROGRAM
This Mitigation, Monitoring and Reporting Program (MMRP) has been prepared pursuant to the CEQA Guidelines, which state:
“When adopting a mitigated negative declaration, the lead agency shall also adopt a program for reporting on or monitoring the changes which it has either required in the project or made a condition of approval to mitigate or avoid significant environmental effects” (§15074(d)) and;
“The Lead Agency may choose whether its program will monitor mitigation, report on mitigation, or both. “Reporting” generally consists of a written compliance review that is presented to the decision-making body or authorized staff person. A report may be required at various stages during project implementation or upon completion of the mitigation measure. “Monitoring” is generally an ongoing or periodic process of project oversight.

There is often no clear distinction between monitoring and reporting and the program best suited to ensuring compliance in any given instance will usually involve elements of both.” (§15097 (c))
The following table lists the impacts, mitigation measures, and timing of the mitigation measure (when the measure will be implemented) related to the 642 Quarry Road Life Science Project.

All of the mitigation measures listed here will be implemented by the City, the Applicant, or by their appointees.

According to CEQA Guidelines section 15126.4 (a) (2), “Mitigation measures must be fully enforceable through permit conditions, agreements, or other legally-binding instruments. In the case of the adoption of a plan, policy, regulation, or other public project, mitigation measures can be incorporated into the plan, policy, regulation, or project design.” Therefore, all mitigation measures as listed in this MMRP will be adopted by the City of San Carlos City Council when the project is approved.

10.i
August 14, 2023 Packet Pg. 465
Mitigation Monitoring and Reporting Program 2
642 Quarry Road Life Science Project April 2023
City of San Carlos
Impact Mitigation Measure Implementation
Responsibility/Timing Monitoring Responsibility Verified Implementation

HAZARDS
Impact HAZ-1: The VOCs
benzene, PCE, naphthalene,
and TPHg (as TVH reported
as hexane) present in soil
vapors sampled from the site
exceed the Environmental
Screening Level for residential
uses applicable to the
childcare facility and for
commercial uses applicable to
the office and lab tenants. Soil
vapors could intrude into the
project development. Staining
on ground surface from
chemicals and leaking drum
observed at 151 K Old County
Road could indicate soils with
higher-than-expected/allowed
contamination may be
encountered during site
redevelopment.

Mitigation Measure HAZ-1:

Soil Management Plan (SMP).

A SMP shall be prepared to
address potential data gaps in
subsurface characterization,
procedures for handling and
disposal of excess soil resulting
from redevelopment
construction, contingency
measures for unanticipated
environmental conditions that
may be encountered during site
redevelopment, and vapor
intrusion concerns. The SMP
shall also include
recommendations for
management of groundwater if
contaminants are encountered.

The SMP shall be submitted to
the City Public Works
Department and San Mateo
County Department of
Environmental Health for
review.

As a component of the SMP a
vapor intrusion site conceptual
model (VICSM) shall be
prepared by the responsible
Environmental Professional
(Environmental Consultant) and
incorporate the results of site
investigations (including those
conducted in June 2021 and
September 2022)., Based on
the VICSM evaluation results
Implementation: by
Applicant or its contractor
Timing: Prior to grading
permit issuance/approval
and construction activities.

Monitoring: The Applicant
shall prepare the SMP and
provide it to the City Public
Works Department and the
San Mateo County
Environmental Health
Services as part of the
project entitlement process.

The applicant shall provide
written verification to the City
that the SMP is acceptable
to San Mateo County
Environmental Health
Services prior to grading
permit issuance.

Initials: ______
Date: ________

10.i
August 14, 2023 Packet Pg. 466
Mitigation Monitoring and Reporting Program 3
642 Quarry Road Life Science Project April 2023
City of San Carlos
Impact Mitigation Measure Implementation
Responsibility/Timing Monitoring Responsibility Verified Implementation
and San Mateo County
Environmental Health Services’
review, a Vapor Intrusion
Mitigation System (VIMS) shall
be designed and installed if
needed to mitigate potential
unacceptable human health
risks associated with vapor
intrusion concerns for future site
users (including sensitive
receptor populations associated
with childcare uses).

Impact HAZ-2 Demolition,
removal, and transport of
hazardous materials stored on
the property or building
materials containing leadbased paint or asbestos
containing materials, and any
project soils containing
elevated levels of soluble lead
could result in airborne
emissions of lead resulting in
exposure of workers or the
environment to a hazardous
material.

Mitigation Measure HAZ-2:

Hazardous Material and
Debris Management. The
Applicant or its Contractor shall
develop and implement a
hazardous material and debris
management and disposal plan
for the hazardous materials that
are to be removed from the
project site. The plan shall be
designed to prevent releases of
hazardous materials in
quantities that could pose a risk
to human health and the
environment, as determined
using appropriate BAAQMD,
RWQCB, DTSC, and/or other
appropriate agency screening
thresholds.

The plan shall identify the
receiving qualified landfill and
present proof of waste
acceptance. The plan shall
specify measures to minimize
Implementation: by
Applicant or its contractor
Timing: Prior to and
during construction.

Monitoring: The hazardous
waste management plan
shall be submitted to the City
Building Department or San
Mateo County
Environmental Health
Services for review and
approval prior to start of
construction. The Applicant
or its Contractor shall submit
written documentation of
landfill acceptance of
hazardous waste and
implementation of worker
and residential protective
measures taken during site
deconstruction. Copies of all
documentation shall be kept
on file at the City Building
Department.

Initials: ______
Date: ________

10.i
August 14, 2023 Packet Pg. 467
4 Mitigation Monitoring and Reporting Program
642 Quarry Road Life Science Project April 2023
City of San Carlos
Impact Mitigation Measure Implementation
Responsibility/Timing Monitoring Responsibility Verified Implementation
airborne dust during building
deconstruction and soil
movement to protect
construction workers and
neighboring residents from
exposure to hazardous material
emissions. The plan shall
address protection of worker
exposure to airborne lead paint
particulates through use of
personal protective gear, clear
identification of the location of
hazardous materials, and
removal by properly
trained/certified workers, and
proper cover and transport of
hazardous materials, etc.

10.i
August 14, 2023 Packet Pg. 468