9.6_-_Mitigation-Avoidance_Measures_SUMMARY_Revised_7-28-23.pdf

MURRAY STREET BRIDGE SEISMIC RETROFIT PROJECT

Summary of Mitigation and Avoidance/Minimization Measures, Recommended Conditions of Approval and Construction Specifications, and

Permit Conditions of Approval (REVISED JULY 28, 2023)

Introduction

All mitigation and avoidance/minimization measures that are included in the CEQA and NEPA documents, supporting studies, and state and federal permit conditions are compiled in this summary and are numbered consecutively for ease of reference on the following pages. Where measures are included in several documents, they are only numbered once to avoid redundancy, but all measures are listed for completeness.

This Summary includes the following sections:

Summary of Required Mitigation/Avoidance Measures by Timing of Implementation

Summary Table of Source of Required Measures

List of all Measures included in the CEQA and NEPA Documents and plans required by agency permits with revisions requested by the California Coastal Commission (CCC) incorporated into the measures

Conditions of approved regulatory permits (coastal development permit [CDP], NOAA

Fisheries Incidental Harassment Authorization [IHA], and California Department of Fish and

Wildlife [CDFW] Streambed Alteration Agreement [SAA])

The Initial Study/Mitigated Negative Declaration Mitigation Monitoring Program

INTENTIONALLY LEFT BLANK

Summary of Required Measures/Implementation Timing

I. INCLUDE MEASURES IN CONSTRUCTION PLANS / SPECIFICATIONS

Bridge Lighting: #11

Pile Driving Timing/specifications: #1, 21, 29, 30

Erosion/Water Quality Control BMPs: #9, 12

Measures If Archaeological Resources Encountered: #14

Noise Controls/Minimization Measures: #15

Noise Controls to Protect Birds: #24

Vegetation, Tree Removal, and Heritage Tree Protection Measures: #43-45

Construction Hours: #46

Dewatering Not Authorized: #55

II. COMPLETE PRIOR TO INITIATION OF CONSTRUCTION

Remove Marine Mammal Resting Sites: #3

Remove Swallow Nests Prior to Nesting Season: #7

Remove Bat Roosting Crevices: #2, 25, 26

Prepare Marine Wildlife Protection Plan and Hydroacoustic Monitoring Plan: #27, 28

Obtain approval of qualified biologist monitors: #4

Set up City-County “Oversight” Group regarding Traffic: #20

CONDUCT PRE-CONSTRUCTION SURVEYS AND NOTIFICATIONS

Marine Mammal Surveys: #32

Roosting Bat Surveys: #2, 26

Nesting Bird Surveys: #6

Heron Rookery Nesting Surveys: #23 – starts earlier than #6

Special Status Surveys per CDFW Conditions: #48

Soil Testing: #8 (IS)

Traffic Control Plan Preparation & Implementation: #16

Pre-construction photos per CDFW Condition: #49

Notify Emergency Providers of Street Closures: #18

Notify Residents of Pile Driving Schedule: #10

Notify CDFW 5 days prior to project initiation: #47

Worker Training For Marine Mammal Protection: #4

Worker Training For Water Quality Protection: #52

Erosion Control Measures On Site: #54

V. IMPLEMENTATION DURING CONSTRUCTION

BIOLOGICAL MONITORING DURING CONSTRUCTION

Marine Mammal Daily Monitoring and Monitor Requirements: #4, 31, 33

Pile Driving Requirements when Marine Mammals are Present: #5

Construction/pile driving exclusion zones: 35, 36

Construction Halts by Marine Mammal Monitor: #34

Underwater Acoustical Monitoring of Pile Driving: #37

Marine Mammal Protection During Construction and Disturbance Prohibition: #38

Marine Mammal Observations, Records & Notifications: #39, 40

Daily Pelican Check: #22

Bat Protection During Construction: #26

Notify CNDBB of Listed/Special Status Species Sighted During Construction: #50

OTHER

Protect Heritage Trees during construction: #13

Street Closure Restrictions: #17

Water Traffic Controls: #19

Minimize Disturbances and Vegetation Removal: #53

Implement Final Stormwater Control Plan: #56

VI. POST-CONSTRUCTION REQUIREMENTS

Replace Haul-out Areas: #41

Rehabilitation of Temporarily Disturbed Sites: #51

Post-construction Marine Mammal Monitoring: #42

Post-construction Notification to CDFW: #47

Post-construction Water Quality BMPs and Removal: #57

Post-construction Inspection of Waters of the State: #58

Post-construction Reporting to RWQCB: #59

Post-construction photos per CDFW Condition: #49

MURRAY STREET BRIDGE SEISMIC RETROFIT PROJECT

MITIGATION MEASURES, AVOIDANCE/MINIMIZATION MEASURES (AMM), PERMIT CONDITIONS REQUIREMENTS

NUMBER Measure

CEQA

Mitigation #

NEPA

AMM-NES

Section

CEQA

Recommended

Construction

Spec

Marine

Wildlife

Protection

Plan

CCC - CDP

Condition #

CDFW SAA

Condition #

NOAA

Fisheries IHA

Condition #

RWQCB 401

Cert Condition

1 Timing of Pile Driving/Steelhead AMM 1 4.3.2.2 1

2 Pre-construction bat surveys & sealing bat crevices; SEE #26 & 27

2 4.3.14.2 2.11

3 Pre-construction removal of marine mammal haul out sites

3 6

4 Biological Monitors and Construction

Worker Training

4 4, 7, 8 Special Cond 5b 1.8, 1.8.1, 1.8.2, 1.8.3, 1.8.4, 2.5, 2.7

3(d), 5(b)

5 500-foot buffer for marine mammal 5 2.15 4(e)

6 Pre-construction nesting bird surveys 6 2.8, 2.9, 2.10, 3.2

7 Removal of nests outside of breeding season

8 Soils Testing 8

9 Water Quality / Erosion Control BMPs ✓ 2.31, 2.32, 2.33, 2.34, 2.35, 2.36, 2.37, 2.39, 2.40.

2.41, 2.42

4, 5, 6, 7, 9, 10, 11, 12

10 Construction Notice n to Neighbors ✓

11 Bridge Lighting ✓

12 Soil Stockpiles ✓ 2.38 8

13 Heritage Tree Protection ✓

14 Archaeological Resource Discoveries ✓

15 Noise Minimization ✓

16 Traffic Control Plan ✓

17 Lane Closures ✓

18 Construction Notice to Emergency

Providers

19 Traffic Controls ✓

20 City-County Traffic Oversight ✓

NUMBER Measure

CEQA

Mitigation #

NEPA

AMM-NES

Section

CEQA

Recommended

Construction

Spec

Marine

Wildlife

Protection

Plan

CCC - CDP

Condition #

CDFW SAA

Condition #

NOAA

Fisheries IHA

Condition #

RWQCB 401

Cert Condition

21 Pile Driving Specifications 4.3.2.2 2.16, 2.19

22 Pelican AMM 4.3.4.2

23 Heron/Egret AMM 4.3.4.6

24 Noise Controls-Birds 4.3.6.2

25 Remove bat nesting areas before construction

4.3.14.2

26 Pre-construction bat surveys; SEE #2 4.3.14.2 2.11, 2.12, 2.13, 3.1

27 Marine Wildlife Protection Plan Special Cond 5

28 Hydroacoustic Monitoring Plan Special Cond 4

29 Impact Hammers 4.3.2.2 2 2.16, 2.18, 2.20

30 Soft Starts 3 Special Cond 5a

31 Marine Wildlife Monitors 4 Special Cond 5b 5(b)

32 Pre-Construction Marine Monitoring 5

33 In-Water Construction Biological

Monitoring

8 Special Cond 5b 2.14, 2.19 4(b), 4(d), 4(g), 4(h)

34 Construction Halts 9 Special Cond 5c 4(c), 4(f), 4(i), 5(a)

35 Preliminary Exclusion Zones 10 Special Cond 4b

36 Exclusion Zone Changes 11

37 Underwater Acoustical Monitoring 12

38 Marine Mammal Disturbance Prohibition 13

39 Construction Monitoring Records and

Reporting

14 Special Cond 5d 6(a), 6(b), 6(c)

40 Notification of Injury 15 6(e)

41 Replace Haul-out Areas 16

42 Post-Construction Monitoring 17

43 Vegetation Removal 2.21

44 Tree Removal 2.2

45 Invasive Plants 2.23

46 Conduct work during daylight hours 2.3

NUMBER Measure

CEQA

Mitigation #

NEPA

AMM-NES

Section

CEQA

Recommended

Construction

Spec

Marine

Wildlife

Protection

Plan

CCC - CDP

Condition #

CDFW SAA

Condition #

NOAA

Fisheries IHA

Condition #

RWQCB 401

Cert Condition

47 CDFW Notification 3.1

48 Special Status Species Surveys 2.6

OTHER CDFW Conditions: 2.24 through 2.30 regarding construciton measures

2.24 thru 2.42, 3.3

Pre- and post-construction photo documentation

3.3

Notify CNDDB if listed or special status species observed

3.4

51 Rehabiltate temporarily disturbed areas 1 MM

Requirements

52 Construction worker water quality training

53 Minimize disturbances and vegetation removal

54 Erosion control measures on site prior to start of construction

55 No dewatering or stream diversion without authorizaiton from RWQCB

56 Implement Final Stormwater Control Plan 14

57 Post-construction water quality BMPs 14, 15

58 Post-construction inspections of waters of the state 1-Monitoring

Requirements

59 RWQCB Reports page 8-9

INTENTIONALLY LEFT BLANK

AWW – Avoidance/Minimization Measures BA – Biological Assessment EFH – Essential Fish Habitat Assessment IS – Initial Study Mitigation NES – Natural Environment Study MMMP–Marine Mammal Monitoring Program REV-Revised 2022 (per Agency Comments) MWPP–Marine Wildlife Protection Plan

CDFW –Streambed Alteration Agreement (SAA) Conditions CDP – Coastal Development Permit Conditions IHA – Incidental Harassment Authorization Conditions RWQCB 401 Certification

Mitigation & Avoidance/Minimization Measures IN IT IAL STUDY – January 2008

MASTER

NUMBER MEASURE WITH NUMBER FROM ORIGINAL DOCUMENT

1. MITIGATION MEASURE 1 (REV) AND STEELHEAD AMM: Timing of Pile Driving. Conduct pile driving activities in Harbor waters from July 1 to mid-November, outside the fish migration period and to protect federally-listed salmonids, unless otherwise permitted by NOAA Fisheries. This applies to all pile driving activity, including installation of permanent bridge piles, harbor berth replacement piles, and temporary piles to support a construction trestle, if one is utilized, as well as removal of existing berth piles and removal of temporary trestle piles, if a construction trestle is erected. Criteria for extension of pile driving would include consideration of weather conditions. For example a low rainfall period in November and December could warrant extension to the beginning of January.

2. MITIGATION MEASURE 2 (REV): Pre-construction Bat Surveys. Conduct focused pre-construction surveys of the Murray Street bridge by a qualified biologist to determine if bats are roosting in the bridge’s expansion joint crevices if bridge construction activities are scheduled during the breeding season of native bat species (April 1 through August 31), including the Hoary bat (Lasiurus cinereus). Bat roosting habitat in crevices will be sealed prior to the onset of bat reproductive season (April 1). If roosting habitat is not sealed prior to bat reproductive season, bat exclusion devices will be installed. If these actions do not result in exclusion, a qualified biologist in possession of an applicable Department of Fish and Wildlife Memorandum of Understanding should remove and relocate the roosting bats to an appropriate alternate habitat (a roost with comparable spatial and thermal characteristics). Bat species may also roost and nest in abandoned swallow nests; therefore, the qualified biologist shall also conduct focused pre-construction inspections of all swallow nests to be removed. If occupied by bats, swallow nest removal should occur after young are capable of flying and prior to seasonal torpor (September 1 to October 31). Removal of nests previously occupied by bats should occur at night when bats have left to forage. [SEE ALSO MEASURES

# 25 & 26]

3. MITIGATION MEASURE 3: Pre-construction Removal of Marine Mammal Haul-out Sites. Remove known or potential marine mammal resting sites prior to construction based on the outcome of preconstruction survey to assess if and how marine mammals utilize the construction area of potential impact. This preconstruction monitoring will take place at least five days prior to the start of in-water construction. All known and potential resting/haul-out sites that occur in the construction work area shall be removed beyond area of activity, preferably to a near-by location outside of the work area prior to construction, either under the bridge or above. These sites could include floating docks (i.e. Dock FF) rubber docks or boats, such as those used by UCSC. (Bold italicized text included in MWPP-6)

4. MITIGATION MEASURE 4: Biological Monitors. Require a qualified biological marine wildlife monitor

(MWM) be present during in-water construction activities to search for target marine mammal species and halt project activities that could result in injury or mortality to these species. [SEE ALSO

MEASURE #31]

AWW – Avoidance/Minimization Measures BA – Biological Assessment EFH – Essential Fish Habitat Assessment IS – Initial Study Mitigation NES – Natural Environment Study MMMP–Marine Mammal Monitoring Program REV-Revised 2022 (per Agency Comments) MWPP–Marine Wildlife Protection Plan

CDFW –Streambed Alteration Agreement (SAA) Conditions CDP – Coastal Development Permit Conditions

CDFW-Approved Qualified Biologists and Monitors. A qualified biologist shall have a minimum of five years of academic training and professional experience in biological sciences and related source management activities and shall also have a minimum of two years conducting surveys for each species that may be present within the project area. Biological monitors shall have academic and professional experience in biological sciences and related resource management activities as it pertains to this project.

City shall submit to CDFW for written approval, the names and resumes of all qualified biologists and biological monitors involved in conducting surveys or monitoring work. City shall submit the names and resumes to CDFW at least 14 days before the start of the project or before the start of surveys. Resumes shall include educational background, experience with focal species and description of experience with each focal species (e.g., tagging, handling, observational surveys, electrofishing, relocation, auditory surveys, etc.), including number of hours/years of experience per species, trainings/workshops, and certificates or related credentials; include experience with different life stages of a species when applicable.

City shall not enter into non-disclosure agreements with biological staff or otherwise implement penalties or disincentives restricting direct communication with CDFW. [SEE ALSO MEASURE #31]

Training for Personnel. Prior to in-water construction, the CDFW-approved qualified biologist or biological monitor will conduct a workers training to instruct construction crews regarding the status and sensitivity of the target species in the area and the actions to be taken to avoid or minimize impacts in the event of a target species entering the in-water work area, including responsibilities, communication procedures, monitoring protocols, and operational procedures. New personnel joining during the project must be trained prior to commencing work. Instruction shall consist of a presentation by the CDFW-approved qualified biologist that includes a discussion of he biology, general behavior, and the habits of the species identified in the Streambed Alteration Agreement and that may be present at the site, how they may be encountered within the work area, and procedures to follow when are encountered. Interpretation shall be provided for non-English speaking workers, and the same instruction shall be provided for any new works prior to onsite project activities. Copies of the agreement with CDFW shall be maintained at the worksite with the project supervisor. All works present at the training shall sign a roster acknowledging that they participated in the training and that the roster shall be kept on site and made available upon request.

5. MITIGATION MEASURE 5: Pile Driving within 500-foot Radius of Marine Mammal. Prohibit pile driving activities within a 500-foot radius if marine mammals are present. This radius will be visibly flagged on the banks of the harbor during these activities. Each day prior to the commencement of pile-driving, the approved monitor will survey the buffer zone for marine mammals. If a marine mammal is detected, delay pile driving until the marine mammal(s) has moved beyond the buffer zone, verified by visual confirmation or lack of visual sighting within the next 15 minutes of the last sighting. If the animal should move back into the buffer zone after the commencement of pile-driving, no further work stoppage will be necessary. The buffer radius may be reduced based on a measurement of the distance the 160 db pressure travels in the underwater harbor waters. This would be determined using an approved acoustic monitoring device. The City of Santa Cruz would notify NOAA Fisheries in writing of the proposed change in buffer zone area.

6. MITIGATION MEASURE 6 (REV): Pre-construction Nesting Bird Surveys. Require that a pre-construction survey for special-status nesting avian species (and other species protected under the Migratory

AWW – Avoidance/Minimization Measures BA – Biological Assessment EFH – Essential Fish Habitat Assessment IS – Initial Study Mitigation NES – Natural Environment Study MMMP–Marine Mammal Monitoring Program REV-Revised 2022 (per Agency Comments) MWPP–Marine Wildlife Protection Plan

CDFW –Streambed Alteration Agreement (SAA) Conditions CDP – Coastal Development Permit Conditions

Bird Treaty Act [MBTA]) be conducted within 72 hours of at least 30 days prior to the beginning of construction activities and if there is four-day or more lapse in project construction that occurs during the nesting/breeding season (typically February 1 through August 15July) to assure that this area is not actively being used. If active nesting is not occurring, project construction activities may begin. The minimum survey radii surrounding the work area shall be: i) 250 feet for passerines; ii)

500 feet for other small raptors such as accipiters; iii) 1,000 feet for larger raptors such as buteos, or as determined by the qualified biologist.

If a nesting special-status bird is found during the survey, construction within 300 100 feet of the special-status passerine and other MBTA-protected species nest sites shall be halted and should be postponed until after the bird has fledged or consultation with the California Department of Fish and

Game be conducted to determine alternative measures or appropriate buffers with a minimum buffer of 250 feet for raptors and 100 feet for passerines. The CDFW-approved qualified biologist shall monitor the nesting birds and shall increase the buffer if it is determined that the birds are showing signs of unusual or stressed behavior by project activities, including heron rookeries. The

CDFW-approved qualified biologist shall order cessation of nearby project activities if the nesting birds exhibit abnormal behavior, which may cause reproductive failure (nest abandonment and loss of eggs and/or young) until an adequate buffer is established. To prevent encroachment, the established buffer(s) shall be clearly marked for avoidance and shall remain in effect until the young have fledged or the nest has been abandoned as confirmed by the biologist. Signs of nest abandonment, as determined by the CDFW-approved qualified biologist, shall be reported to CDFW within 24 hours.

In the event that encroaching within these buffers is necessary (and is approved via consultation with CDFW), the following must be met for all species protected under the MBTA and California Fish and Game Code:

a) Ensure that noise levels at sensitive receptor sites (i.e., nests) are kept below 60 dB at all times, even when buffer adjustments are allowed under consultation with CDFW (i.e., encroachment within the 250- and 100-foot buffer may be allowed under consultation, if the 60 dB noise is demonstrated to be maintained).

b) Ensure that there is sufficient visual screening (via screens or sound barriers) to avoid disturbing nests.

c) Have a trained biologist observer present at all times during authorized activities that require encroachment; the biologist should ensure that animals are not showing signs of distress, and if they do, the observer has the authority to halt work until it can safely continue.

d) Inform California Coastal Commission of buffer adjustments recommended by CDFW.

Survey results for nesting birds shall be submitted to CDFW within 7 days of survey completion.

No Take of Bank Swallow. If active bank swallow nests are found during the nesting bird surveys, City shall immediately notify CDFW. In consultation with CDFW, measures may be added to avoid impacts to bank swallow, a state threatened species. If take of bank swallow cannot be avoided, City shall obtain an Incidental Take Permit.

7. MITIGATION MEASURE 7: Removal of Nests Outside of Breeding Season. If project activities are to be initiated outside of the breeding season, remove existing nests and/or install exclusion netting under the bridge to prevent nesting for the season. Swallow nests should be removed from the

AWW – Avoidance/Minimization Measures BA – Biological Assessment EFH – Essential Fish Habitat Assessment IS – Initial Study Mitigation NES – Natural Environment Study MMMP–Marine Mammal Monitoring Program REV-Revised 2022 (per Agency Comments) MWPP–Marine Wildlife Protection Plan

CDFW –Streambed Alteration Agreement (SAA) Conditions CDP – Coastal Development Permit Conditions bridge structure before the breeding season including the courtship period, usually January through

July. Exclusion netting should be subsequently installed to prevent reestablishment of nest structures on the bridge infrastructure during construction.

8. MITIGATION MEASURE 8: Soils Testing. In conformance with the recommendations of the Phase 1

Environmental Assessment, fill soils excavated from the west end of the bridge shall be tested for motor oil (with silica gel clean-up). Fill soils excavated from the east end of the bridge shall be tested for diesel, arsenic, motor oil (with silica gel clean-up), and lead (used in old paints). If motor oil is detected, soils shall be further tested for polychlorinated biphenyls (PCBs), due to the presence of a nearby transformer. Any contaminants found shall be treated and/or disposed of in conformance with all applicable regulations.

9. MITIGATION MEASURE 9: Water Quality Best Management Practices. Incorporate Best Management

Practices (BMPs) into construction specifications, including, but not limited to:

To protect water quality, require all excavated soils, fill and construction materials be stored and contained in a designated area away from Harbor waters, and cover stockpiled soils to prevent release of sediments.

Prevent materials deleterious to aquatic life, wildlife, or riparian habit from contaminating soil or entering waters of the State.

All construction vehicles and equipment used on site shall be well maintained and checked daily for fuel, oil, and hydraulic fluid leaks or other problems that could result in spills of toxic materials.

Prohibit fueling, cleaning, or maintenance of equipment except in designated areas located as far from Harbor waters as possible. Designate a staging area for equipment and vehicle fueling and storage at least 100 feet away from waterways, in a location where fluids or accidental discharges cannot flow into waterways. All vehicle fueling and maintenance activity shall occur at least 100 feet away from waterways and in designated staging areas, unless a requested exception on a case-by case basis granted by prior written approval has been obtained from the Central Coast Water Board.

As a precaution, require contractor to maintain adequate materials onsite for containment and clean-up of any spills. The Permittee shall retain a spill plan and appropriate spill control and clean up materials (e.g., oil absorbent pads) onsite in case spills occur. In event of hazardous spill into stream, notify State of California as specified in CDFW SAA Condition

2.42.

Install temporary erosion and sedimentation control devices and utilize throughout construction. Implement and maintain an effective combination of erosion and sediment control measures (e.g., revegetation, fiber rolls, erosion control blankets, hydromulching, compost, straw with tackifiers, temporary basins, silt fences, straw bales) to prevent erosion and capture sediment. Implement and maintain washout, trackout, dust control, and any other applicable source control BMPs.5. Erosion and sediment control measures and other construction BMPs shall be implemented and maintained in accordance with all specifications governing their proper design, installation, operation, and maintenance.

Locate equipment and spoils in designated staging areas.

Prohibit silt-laden runoff from entering stream.

Control of dewatering process to limit turbidity. Implement CDFW SAA Conditions 2.33 through 2.34 to prevent turbidity.

AWW – Avoidance/Minimization Measures BA – Biological Assessment EFH – Essential Fish Habitat Assessment IS – Initial Study Mitigation NES – Natural Environment Study MMMP–Marine Mammal Monitoring Program REV-Revised 2022 (per Agency Comments) MWPP–Marine Wildlife Protection Plan

CDFW –Streambed Alteration Agreement (SAA) Conditions CDP – Coastal Development Permit Conditions

Prepare and implement a Stormwater Pollution Prevention Plan that further details measures for erosion, sediment and water quality control.

All fill material would be clean material that would meet applicable water quality standards.

The Permittee shall confine all trash and debris in appropriate enclosed bins and dispose of the trash and debris at an approved site daily and shall not dump litter or construction debris within a stream.

At any time of year, the Permittee shall not conduct construction activities that occur on land during rain events or on any day for which the National Weather Service has predicted a 25% or more chance of at least 0.1-inchrain in 24 hours (Predicted Rain Event). The

Permittee shall install effective erosion control, sediment control, and other protective measures no later than the day prior to the Predicted Rain Event, and prior to the start of any rainfall. Construction activities below top of creek banks or in other waters of the State may resume after the rain has ceased, the National Weather Service predicts clear weather for at least 24 hours, and site conditions are dry enough to continue work without discharge of sediment or other pollutants from the Project site.

10. MITIGATION MEASURE 10: Construction Notification to Neighbors. Require that property owners and residents located within 150 feet of the pile installation locations be notified at least one week prior to construction.

11. RECOMMENDED CONDITION OF APPROVAL: Bridge Lighting. Require all bridge lighting to be hooded and directed downward.

12. RECOMMENDED CONSTRUCTION SPECIFICATION: Soil Stockpiles. Require that all stockpiles of debris, soil and other materials which can become windblown be covered. Any material stockpiled that is not actively being used during construction shall be covered and surrounded with a linear sediment barrier.

13. RECOMMENDED CONDITION OF APPROVAL: Protect Heritage Trees. Implement measures to protect existing retained heritage trees in order to minimize damage to protected trees and their root zones during construction, including, but not limited to the following:

Install construction fencing around the heritage trees to be retained to establish a zone sufficient for protection during construction to prevent inadvertent grading or disturbance/compaction by construction equipment; and

Prohibit storage of materials, dumping of debris or construction equipment within tree protection zones.

14. RECOMMENDED CONDITION OF APPROVAL: Archaeological Resource Discoveries. If archaeological resources or human remains are discovered during construction, the City of Santa Planning and

Community Development Department and Caltrans District 5 Environmental Planning Branch shall immediately be notified, work shall be halted within 50 meters (150 feet) of the find, and a qualified archaeologist shall assess its significance. If the find is determined to be significant, appropriate mitigation measures shall be formulated and implemented.

AWW – Avoidance/Minimization Measures BA – Biological Assessment EFH – Essential Fish Habitat Assessment IS – Initial Study Mitigation NES – Natural Environment Study MMMP–Marine Mammal Monitoring Program REV-Revised 2022 (per Agency Comments) MWPP–Marine Wildlife Protection Plan

CDFW –Streambed Alteration Agreement (SAA) Conditions CDP – Coastal Development Permit Conditions

15. RECOMMENDED CONDITION OF APPROVAL: Noise Minimization.

Require all stockpiling and vehicle staging areas and stationary noise-generating construction equipment to be located as far as possible from nearby residential areas as practicable.

As part of construction specifications, require all equipment to be kept in good repair and fitted with superior quality mufflers. All equipment shall be properly maintained to assure that no additional noise, due to worn or improperly maintained parts, would be generated.

Require the contractor to assure that mobile noise-generating equipment and machinery are shut off when not in use.

16. RECOMMENDED CONSTRUCTION SPECIFICATION: Traffic Control Plan. Prepare and implement a traffic control plan that includes: installation of signals on each side of the Murray Street bridge to allow controlled access for each direction; changing existing signal phasing as recommended in the traffic analysis; and implementation detours and advance warning signs to address delays.

17. RECOMMENDED CONSTRUCTION SPECIFICATION: Lane Closures. To the extent possible, restrict any temporary lane closures on Murray Street to times outside peak traffic periods, which are generally

7-9 AM and 4-6 PM, and require implementation of traffic controls during times of lane closures consistent with provisions of a traffic control plan that includes a signal to control eastbound and westbound traffic during times of lane closures.

18. RECOMMENDED CONSTRUCTION SPECIFICATION: Construction Notification to Emergency Providers. Provide advance notice to emergency providers of the construction schedule, lane/road closures on Murray

Street, and potential traffic disruption.

19. RECOMMENDED CONDITION OF APPROVAL: Traffic Controls During Construction. Require water traffic controls, i.e. patrol/flagger, during periods when the boat channel must be reduced to one-way traffic, consistent with USCG bridge permit requirements.

20. RECOMMENDATION: [ADDED AS PART OF RESPONSE TO COMMENTS ON INITIAL STUDY] City-County Traffic

Oversight. Establish a City-County oversight group to monitor and adjust, if necessary, the project’s traffic control measures and to advise on the public information program in order to address temporary construction impacts.

AWW – Avoidance/Minimization Measures BA – Biological Assessment EFH – Essential Fish Habitat Assessment IS – Initial Study Mitigation NES – Natural Environment Study MMMP–Marine Mammal Monitoring Program REV-Revised 2022 (per Agency Comments) MWPP–Marine Wildlife Protection Plan

CDFW –Streambed Alteration Agreement (SAA) Conditions CDP – Coastal Development Permit Conditions

NATURAL ENVIRONMENT STUDY – August 2010

NUMBER MEASURE

Steelhead Avoidance & Minimization Measures

THE FOLLOWING IS THE SAME AS Measure #1 (IS #1) and is not assigned a new number.

Conduct pile driving activities in Harbor waters from July 1 to mid-November, outside the fish migration period, unless otherwise permitted by the National Marine Fisheries Service (NMFS). This applies to all pile driving activity, including installation of permanent bridge piles, harbor berth replacement piles, and temporary piles to support a construction trestle, if one is utilized, as well as removal of existing berth piles and removal of temporary trestle piles, if a construction trestle is erected. Criteria for extension of pile driving would include consideration of weather conditions. For example a low rainfall period in November and December could warrant extension to the beginning of

January.

21. Pile Driving Specifications:

Based on the geotechnical site characteristics, the permanent bridge piles will be partially or entirely vibrated into the Harbor substrate rather than driving them by means of

“hammering”. Vibratory pile driving does not generate peak sound pressure levels that cause direct impacts to fish species; a vibratory driver will be used for the dock piles and temporary trestle piles, if a construction trestle is erected. Vibratory pile driving does not generate peak sound pressure levels that cause direct impacts to fish species. (Bold italicized text added from EFH)

Impact hammers shall not be used except in cases where vibratory hammers are not a feasible alternative. Pile driving activities that rely on impact hammers rather than vibratory techniques shall be designed to assure compliance with the interim criteria for Sound

Exposure Levels (SEL) less or equal to 187 decibels (dB) in any single strike, and peak sound pressure less or equal to 206 dB in any single strike, measured at a distance of 32.8 feet from the source. In addition, to reduce sound pressure levels to the greatest extent feasible, a cushioning block between hammer and pile shall always be used.

Bubble curtains shall be used at all piles driven by impact hammers.

[SEE ALSO MEASURES #29 and 30]

-- THE FOLLOWING IS THE SAME AS #9 (IS #9) and is not assigned a new number.

Incorporate BMPs into construction specifications, including, but not limited to:

To protect water quality, require all excavated soils, fill and construction materials be stored and contained in a designated area away from Harbor waters, and cover stockpiled soils to prevent release of sediments.

Prohibit fueling, cleaning, or maintenance of equipment except in designated areas located as far from

Harbor waters as possible. As a precaution, require contractor to maintain adequate materials onsite for containment and clean-up of any spills.

Install temporary erosion and sedimentation control devices.

Locate equipment and spoils in designated staging areas.

Control of dewatering process to limit turbidity.

Prepare and implement a Stormwater Pollution Prevention Plan that further details measures for erosion, sediment and water quality control.

All fill material would be clean material that would meet applicable water quality standards.

AWW – Avoidance/Minimization Measures BA – Biological Assessment EFH – Essential Fish Habitat Assessment IS – Initial Study Mitigation NES – Natural Environment Study MMMP–Marine Mammal Monitoring Program REV-Revised 2022 (per Agency Comments) MWPP–Marine Wildlife Protection Plan

CDFW –Streambed Alteration Agreement (SAA) Conditions CDP – Coastal Development Permit Conditions

Pelican Avoidance & Minimization Measures

22. Pelican Avoidance/Minimization Measure. If pelicans roost in the project area before construction activities have commenced for the day, construction activities will not begin until the bird/s have flushed. Workers will not engage in harassment of the bird/s or any activity to encourage flushing.

If a pelican or group of pelicans enters the project area once construction activities have begun for the day, no further avoidance efforts are required.

Great Blue Heron & Egret Avoidance & Minimization Measures

23. (REV) Heron and Egret Avoidance/Minimization Measure. Require that a pre-construction survey be conducted at least 30 days prior to the beginning of construction activities that occur during the heron breeding season (typically late December through mid-June) to determine if active nesting is occurring at the heron rookery. If active nesting is not occurring, project construction activities may begin. If active nests are observed, construction activities will not occur until young have fledged or an appropriate buffer zone is established by a qualified biologist in consultation with resource agencies as needed with a minimum buffer of 250 feet for raptors and 100 feet for passerines. In the event that encroaching within these buffers is necessary (and is approved via consultation with

CDFW), the following must be met for all species protected under the MBTA and California Fish and

Game Code:

a) Ensure that noise levels at sensitive receptor sites (i.e., nests) are kept below 60 dB at all times, even when buffer adjustments are allowed under consultation with CDFW (i.e., encroachment within the 250 and 100 foot buffer may be allowed under consultation, if the

60 dB noise is demonstrated to be maintained).

b) Ensure that there is sufficient visual screening (via screens or sound barriers) to avoid disturbing nests.

c) Have a trained biologist observer present at all times during authorized activities that require encroachment; the biologist should ensure that animals are not showing signs of distress, and if they do, the observer has the authority to halt work until it can safely continue.

d) Inform California Coastal Commission of buffer adjustments recommended by CDFW.

24. Noise controls will be implemented at the source:

Operations will be conducted to avoid noisiest construction activities (pile driving) during breeding season.

Modern and quieter alternate equipment will be used.

Equipment will be operated at lowest possible power levels.

THE FOLLOWING IS INCORPORATED IN #6 (IS #1) and is not assigned a new number.

A biological monitor will be on-site during nesting season to observe the rookery. If it appears that project activities may cause nest abandonment or disruption of breeding, even with noise reducing controls implemented, project activities must cease until the young are able to fly well or Caltrans and the USFWS has been consulted and additional measures taken to protect the heron rookeries.

AWW – Avoidance/Minimization Measures BA – Biological Assessment EFH – Essential Fish Habitat Assessment IS – Initial Study Mitigation NES – Natural Environment Study MMMP–Marine Mammal Monitoring Program REV-Revised 2022 (per Agency Comments) MWPP–Marine Wildlife Protection Plan

CDFW –Streambed Alteration Agreement (SAA) Conditions CDP – Coastal Development Permit Conditions

Western Gull & Swallows Avoidance & Minimization Measures

-- THE FOLLOWING IS THE SAME AS #6 (IS#6) and is not assigned a new number.

Require that a pre-construction survey for nesting avian species (and other species protected under the

Migratory Bird Act) be conducted at least 30 days prior to the beginning of construction activities that occur during the nesting/breeding season (typically February through July) to assure that this area is not actively being used. If active nesting is not occurring, project construction activities may begin. If a nesting special-status bird is found during the survey, construction within 100 feet of the nest site should be postponed until after the bird has fledged or consultation with the California Department of Fish and Game be conducted to determine alternative measures or appropriate buffers.

-- THE FOLLOWING IS THE SAME AS #7 (IS #7) and is not assigned a new number.

If project activities are to be initiated outside of the breeding season, existing nests under the bridge will be removed and exclusion netting installed under the bridge to prevent nesting for the season. Nests will be removed from the bridge structure before the breeding season including the courtship period, usually

January through July. Exclusion netting will be subsequently installed to prevent re-establishment of nest structures on the bridge infrastructure during construction.

Bats Avoidance & Minimization Measures

25. (REV) Removal of Bat Nesting Areas Before Construction. Bat roosting habitat in crevices will be sealed or bat exclusion devices installed prior to the onset of bat reproductive season (April 1).

Swallow nests, which could be occupied by the same species roosting in crevices, should only be removed after a thorough nest inspection. If occupied, nest removal should occur after young are capable of flying and prior to seasonal torpor (September 1 to October 31). Removal of nests previously occupied by bats should occur at night when bats have left to forage.

26. (REV) Pre-construction Bay Surveys. For construction activities scheduled during bat reproductive season (April 1 – August31) or winter roost season (October 15 – February 15), a qualified biologist will conduct focused pre-construction surveys of the Murray Street Bridge, no more than 30 days prior to the initiation of project activities either on or within 50 feet of the bridge to determine if bats are roosting in the bridge’s expansion joint crevices. The biologist shall make an effort to identify the bat species and its use of the bridge (maternity, bachelor, day roosting) and shall avoid disturbing bats during surveys. City shall notify CFW within 24 hours if bats are found during surveys. If no bats are found, no further mitigation would be necessary. If roosting bats are found, delay project activities until roosting bats have vacated the crevices, or juvenile bats have fledged, or install bat exclusion devices (by a qualified biologist) between February 15 and April 15 or between September

15 and October 15, outside of bat reproductive and winter roost seasons, or maintain adequate buffers recommended by Caltrans as shown below1. A qualified monitor will document the effectiveness of the exclusion devices to ensure that all roosting bats have vacated the roost prior to initiation of construction.

1 HT Harvey and Associates in collaboration with HDR, Inc. July 2019. Final. Caltrans Bat Mitigation: A Guide to Developing

Feasible and Effective Solutions. Prepared for California Department of Transportation, Division of Environmental Analysis, Office of Biological Studies.

AWW – Avoidance/Minimization Measures BA – Biological Assessment EFH – Essential Fish Habitat Assessment IS – Initial Study Mitigation NES – Natural Environment Study MMMP–Marine Mammal Monitoring Program REV-Revised 2022 (per Agency Comments) MWPP–Marine Wildlife Protection Plan

CDFW –Streambed Alteration Agreement (SAA) Conditions CDP – Coastal Development Permit Conditions

Survey results for nesting bats shall be submitted to CDFW within 7 days of survey completion.

Bat Protection. Bats shall not be disturbed by an Project-related activities without specific notice to and consultation with DFW. Construction work shall not start on the bridge, or within 50 feet of the bridge, if bats are found nesting/roosting within the bridge structure. If bats are documented using the bridge, the qualified biologist shall conduct weekly surveys at the bridge until the bats have left the area for the fall/winter season.

Bat Monitoring and Monitoring Plan. If bats are found using the bridge during surveys, the CDFW-approved qualified biologist shall submit a Bat Mitigation and Monitoring Plan (MMP) for at least 15 days prior to the start of construction for CDFW review. City shall not initiate construction until receiving written approval from CDFW. The MMP shall include: i) an assessment of all project impacts to bats, including noise disturbance during construction; ii) effective avoidance and minimization measures to protect bats; iii) and compensatory mitigation for permanent impacts to bats or their nesting/roosting habitat. CDFW reserves the right to provide additional provisions to protect nesting/roosting bats.

AWW – Avoidance/Minimization Measures BA – Biological Assessment EFH – Essential Fish Habitat Assessment IS – Initial Study Mitigation NES – Natural Environment Study MMMP–Marine Mammal Monitoring Program REV-Revised 2022 (per Agency Comments) MWPP–Marine Wildlife Protection Plan

CDFW –Streambed Alteration Agreement (SAA) Conditions CDP – Coastal Development Permit Conditions

B io log i ca l Assessmen t – July 2010

Steelhead Avoidance & Minimization Measures

-- THE FOLLOWING IS THE SAME AS Measure #1 (IS #1) and is not assigned a new number.

Conduct pile driving activities in Harbor waters from July 1 to mid-November, unless otherwise permitted by the

National Marine Fisheries Service (NMFS). This applies to all pile driving activity, including installation of permanent bridge piles, harbor berth replacement piles, and temporary piles for a construction trestle, if one is utilized, as well as removal of existing berth piles and removal of temporary trestle piles, if a construction trestle is erected. Criteria for extension of pile driving would include consideration of weather conditions. For example a low rainfall period in

November and December could warrant extension to the beginning of January.

-- THE FOLLOWING IS THE SAME AS #21 (NES AMM) and is not assigned a new number.

Based on the geotechnical site characteristics, permanent bridge piles will be partially or entirely vibrated into the Harbor substrate rather than driving them by means of “hammering”. Vibratory pile driving does not generate peak sound pressure levels that cause direct impacts to fish species.

Pile driving activities that rely on impact hammers rather than vibratory techniques shall be designed to assure compliance with the interim criteria for Sound Exposure Levels (SEL) less or equal to 187 decibels

(dB) in any single strike, and peak sound pressure less or equal to 208 dB in any single strike, measured at a distance of 32.8 feet from the source. In addition, to reduce sound pressure levels to the greatest extent feasible, a cushioning block between hammer and pile shall always be used.

-- THE FOLLOWING IS THE SAME AS Initial Study #9 and is not assigned a new number.

Incorporate BMPS into construction specifications, including, but not limited to:

To protect water quality, require all excavated soils, fill and construction materials be stored and contained in a designated area away from Harbor waters, and cover stockpiled soils to prevent release of sediments.

Prohibit fueling, cleaning, or maintenance of equipment except in designated areas located as far from Harbor waters as possible. As a precaution, require contractor to maintain adequate materials onsite for containment and clean-up of any spills.

Install temporary erosion and sedimentation control devices.

Locate equipment and spoils in designated staging areas.

Control of dewatering process to limit turbidity.

Prepare and implement a Stormwater Pollution Prevention Plan that further details measures for erosion, sediment and water quality control.

All fill material would be clean material that would meet applicable water quality standards.

AWW – Avoidance/Minimization Measures BA – Biological Assessment EFH – Essential Fish Habitat Assessment IS – Initial Study Mitigation NES – Natural Environment Study MMMP–Marine Mammal Monitoring Program REV-Revised 2022 (per Agency Comments) MWPP–Marine Wildlife Protection Plan

CDFW –Streambed Alteration Agreement (SAA) Conditions CDP – Coastal Development Permit Conditions

Essen t ia l F i sh Hab i ta t Assessmen t – July 2010

-- THE FOLLOWING IS THE SAME AS #21 and is not assigned a new number.

Based on the geotechnical site characteristics, the permanent bridge piles will be partially or entirely vibrated into the Harbor substrate rather than driving them by means of “hammering”; a vibratory driver will be used for the dock piles and temporary trestle piles, if a construction trestle is erected. Vibratory pile driving does not generate peak sound pressure levels that cause direct impacts to fish species.

-- THE FOLLOWING IS THE SAME AS #21 and is not assigned a new number.

Pile driving activities that rely on impact hammers rather than vibratory techniques shall be designed to assure compliance with the interim criteria for Sound Exposure Levels (SEL) less or equal to 187 decibels

(dB) in any single strike, and peak sound pressure less or equal to 208 dB in any single strike, measured at a distance of 32.8 feet from the source. In addition, to reduce sound pressure levels to the greatest extent feasible, a cushioning block between hammer and pile shall always be used.

-- THE FOLLOWING IS THE SAME AS Initial Study #9 and is not assigned a new number.

Incorporate Best Management Practices (BMPs) into construction specifications, including, but not limited to:

• To protect water quality, require all excavated soils, fill and construction materials be stored and contained in a designated area away from Harbor waters, and cover stockpiled soils to prevent release of sediments.

• Prohibit fueling, cleaning, or maintenance of equipment except in designated areas located as far from

Harbor waters as possible. As a precaution, require contractor to maintain adequate materials onsite for containment and clean-up of any spills.

• Install temporary erosion and sedimentation control devices.

• Locate equipment and spoils in designated staging areas.

• Control of dewatering process to limit turbidity.

• Prepare and implement a Stormwater Pollution Prevention Plan (SWPPP) that further details measures for erosion, sediment and water quality control.

• All fill material would be clean material that would meet applicable water quality standards.

AWW – Avoidance/Minimization Measures BA – Biological Assessment EFH – Essential Fish Habitat Assessment IS – Initial Study Mitigation NES – Natural Environment Study MMMP–Marine Mammal Monitoring Program REV-Revised 2022 (per Agency Comments) MWPP–Marine Wildlife Protection Plan

CDFW –Streambed Alteration Agreement (SAA) Conditions CDP – Coastal Development Permit Conditions

Mar ine W i ld l i f e P ro te c t ion P lan s – April 2023

27. Marine Wildlife Protection Plan. No less than 90 days prior to commencement of construction, the

City shall prepare a Marine Wildlife Protection Plan (MWPP) for review and written approval by the

Executive Director of the California Coastal Commission (CCC). The MWPP shall be in substantial compliance with the provisions detailed in the submitted Marine Mammal Monitoring Plan (MMMP) and the following parameters to be implemented during all pile driving activities (including during hydroacoustic testing activities) that are done using an impact or a vibratory hammer: soft starts, marine wildlife monitor, construction halts, and reporting.

The specific parameters are included in the measures below under the MWPP. The MWPP was completed in April 2023 and submitted to the CCC.

28. Hydroacoustic Monitoring Plan . No less than 90 days prior to commencement of construction, the

City shall submit two copies of a Hydroacoustic Testing Plan2 (HTP) for review and written approval by the Executive Director of the CCC. The HTP shall outline an underwater hydroacoustic testing program to be implemented during the installation of an initial subset of concrete and steel piles using an impact hammer and/or a vibratory hammer to determine the appropriate exclusion zones specific to individual marine species (e.g., fish, cetaceans, sea otters, sea lions, harbor seals, etc.) to be implemented during in-water construction activities.