1512ABE_-_Project_Manual_Book_V_of_V.pdf

STATE OF CALIFORNIA DEPARTMENT OF GENERAL SERVICES

REAL ESTATE SERVICES DIVISION

PROJECT MANAGEMENT AND DEVELOPMENT BRANCH

PROJECT MANUAL – Book V of V:

INTRODUCTORY INFORMATION

APPENDICES

A. Geotechnical Investigations

1. Pratt Mountain

2. Bunchgrass Mountain

3. Mt. Pierce

B. Environmental Commitment Tables

1. Pratt Mountain

2. Bunchgrass Mountain

3. Mt. Pierce

C. Miscellaneous Tower Equipment Information

1. Antenna Testing and Analysis

2. Antenna Wrapping Procedure

3. Cal OES PSC and General Contractor Inspection & Acceptance Criteria

4. Grounding Requirements for Vault & Tower

5. Tower Install Coax - Waveguide

FOR:

PHASE V COMMUNICATION FACILITIES

REPLACEMENT – GROUP A:

1512A - PRATT MTN.

1512B - BUNCHGRASS MTN.

1512E - MT. PIERCE

CALIFORNIA DEPARTMENT OF FORESTRY AND

FIRE PROTECTION (CALFIRE)

HUMBOLDT & SHASTA COUNTIES, CALIFORNIA

Courtney Wetsell, Project Director Telephone Number 279.799.4650 West Sacramento, California

Consultants: GHD

8/14/2026 1512A, 1512B, 1512E

PROJECT TITLE PAGE

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DOCUMENT 00 01 01

PROJECT TITLE PAGE

Title: REPLACE COMMUNICATION FACILITIES, PHASE V – GROUP A:

1. PRATT MOUNTAIN

2. BUNCHGRASS MOUNTAIN

3. MT. PIERCE

Client Agency: DEPARTMENT OF FORESTRY AND FIRE

PROTECTION (CALFIRE)

Location: PRATT MOUNTAIN/ BUNCHGRASS

MOUNTAIN/ MT.PIERCE

HUMBOLDT & SHASTA COUNTIES,

CALIFORNIA

Project Number: 1512A, 1512B, 1512E

Project Director: Courtney Wetsell State of California Department of General Services Real Estate Services Division Project Management and Development Branch 707 Third Street, 4th Floor West Sacramento, California 95605 Telephone Number: 279.799.

Email: Courtney.Wetsell@dgs.ca.gov

Consultant: GHD, Inc.

Matt Weber, Project Manager 943 Reserve Drive Roseville, CA 95678 Telephone Number: (916) 296-3222 Email: Matt.Weber@ghd.com

CERTIFICATIONS PAGE

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DOCUMENT 00 01 05

CERTIFICATIONS PAGE

PROJECT TITLE:

1. PRATT MOUNTAIN

2. BUNCHGRASS MOUNTAIN

3. MT. PIERCE

CLIENT AGENCY :

LOCATION:

PROJECT NUMBER :

OWNER :

PROJECT DIRECTOR :

CONSULTANT

REPLACE COMMUNICATION FACILITIES, PHASE V –

GROUP A:

DEPARTMENT OF FORESTRY AND FIRE PROTECTION

(CALFIRE)

A - PRATT MOUNTAIN

(Coordinates: 41°29'56.58"N, 124° 3'36.30"W)

B - BUNCHGRASS MTN.

(Coordinates: 41°29'56.58"N, 124° 3'36.30"W)

E - MT. PIERCE

(Coordinates: 41°29'56.58"N, 124° 3'36.30"W)

HUMBOLDT & SHASTA COUNTIES, CALIFORNIA

1512A, 1512B, 1512E

STATE OF CALIFORNIA

Courtney Wetsell Department of General Services Project Management and Development Branch 707 Third Street, 4th Floor West Sacramento, California 95605 Telephone Number: 279.799.4650 Email: Courtney.Wetsell@dgs.ca.gov

GHD, Inc. Matt.Weber@ghd.com

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REGULATORY REVIEWS:

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See Site Books 2, 3, & 4 for site Specific Regulatory Stamps

See Site Books 2, 3, & 4 for site Specific Regulatory Stamps

DSA ACCESS COMPLIANCE SFM

TABLE OF CONTENTS

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DOCUMENT 00 01 10

TABLE OF CONTENTS

PROCUREMENT AND CONTRACTING REQUIREMENTS GROUP

BOOK I

DIVISION 00 - PROCUREMENT AND CONTRACTING REQUIREMENTS

INTRODUCTORY INFORMATION

Pages Document 00 01 01 Project Title Page .......................................................................... 1 only 00 01 05 Certifications Page ........................................................................ 1 through 3 00 01 10 Table of Contents .......................................................................... 1 through 9 00 01 15 List of Drawings ............................................................................. 1 through 8

BIDDING REQUIREMENTS

Document 00 11 00 Invitation for Bids ........................................................................... 1 through 4 00 21 00 Instructions to Bidders ................................................................... 1 through 8 Appendix 00 21 00.01 Request for Bidding Interpretation ................................................. 1 only Document 00 22 00 Supplementary Instructions to Bidders .......................................... 1 only 00 22 10 DVBE Participation Program Requirements ................................... 1 through 3 00 41 00 Bid Form (Sample) ........................................................................ 1 through 10 00 43 13 Bidder’s Bond (Sample) ................................................................. 1 only 00 43 16 Certified Small Business Subcontractor(s) Summary (Sample) ..... 1 through 2 00 45 46 Payee Data Record (Sample) ........................................................ 1 through 2 00 91 13 Addendum (Sample)……………………………………………………1 through 3

CONTRACTING REQUIREMENTS

Document 00 52 00 Agreement (Sample) ..................................................................... 1 only 00 61 13 Performance Bond (Sample) ......................................................... 1 only 00 61 14 Payment Bond to Accompany Construction Contract (Sample) ..... 1 only 00 63 63 Construction Contract Change Order (Sample) ............................. 1 only 00 72 00 General Conditions of the Contract for Construction ...................... 1 through 31 00 73 00 Supplementary Conditions ............................................................. 1 through 13

SPECIFICATIONS GROUP

GENERAL REQUIREMENTS SUBGROUP

DIVISION 01 - GENERAL REQUIREMENTS

Section 01 10 00 Summary ....................................................................................... 1 through 8 01 21 00 Allowances .................................................................................... 1 through 2 01 25 00 Substitution Procedures ................................................................. 1 through 2

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01 29 00 Payment Procedures ..................................................................... 1 through 4 01 31 00 Project Management and Coordination .......................................... 1 through 6 01 32 00 Construction Progress Documentation .......................................... 1 through 7 01 32 33 Photographic Documentation ........................................................ 1 through 3 01 33 00 Submittal Procedures .................................................................... 1 through 8 01 33 29.08 Buy Clean California Act Requirements ......................................... 1 through 2 01 40 00 Quality Requirements .................................................................... 1 through 6 01 50 00 Temporary Facilities and Controls ................................................. 1 through 7 01 56 39 Temporary Tree and Plant Protection ............................................ 1 through 5 01 57 23 Temporary Storm Water Pollution Control ..................................... 1 through 4 01 60 00 Product Requirements ................................................................... 1 through 5 01 64 00 Owner-furnished Products ............................................................. 1 through 3 01 73 00 Execution ...................................................................................... 1 through 7 01 74 19 Construction Waste Management and Disposal ............................ 1 through 5 Form 01 74 19.01 Construction Waste Estimate (A,B,& E) ......................................... 1 only 01 74 19.02 Waste Management Report (A, B & E) .......................................... 1 through 2 Section 01 74 20 Recycled Content Certification (A, B & E) ...................................... 1 through 3 Form 01 74 20.01 Recycled Content Certification Worksheet (Example) .................... 1 through 2 01 74 20.02 State Agency Buy Recycled Campaign Procurement Summary (Example) (A, B & E) ...................................................................................... 1 through 2 Section 01 75 00 Starting and Adjusting ................................................................... 1 through 3 01 77 00 Closeout Procedures ..................................................................... 1 through 12 Form STD 817 Prime Contractor’s Certifications – DVBE Subcontractor Report ... 1 through 5 01 77 00.01 Contractor’s Certification of Small Business Participation .............. 1 only 01 77 00.02 Contractor’ Certification of Small Business Participation ................ 1 only Section 01 79 00 Demonstration and Training .......................................................... 1 through 4

BOOK II - PRATT MTN.

DIVISION 02 – EXISTING CONDITIONS

Section 02 4000 Demolition ..................................................................................... 1 through 2 02 41 16 Groundwork for Structures ............................................................. 1 through 3

DIVISION 03 – CONCRETE

Section 03 10 00 Concrete Forming and Accessories ............................................... 1 through 5 03 20 00 Concrete Reinforcing ..................................................................... 1 through 3 03 30 00 Cast-In-Place Concrete ................................................................. 1 through 8

DIVISION 04 – MASONRY

Section 04 22 00 Concrete Unit Masonry .................................................................. 1 through 9

DIVISION 05 – METALS

Section 05 05 23 Metal Fastenings ........................................................................... 1 through 9 05 12 00 Structural Steel Framing ................................................................ 1 through 3 05 30 00 Metal Decking ................................................................................ 1 through 3 05 41 00 Steel Studs .................................................................................... 1 through 4

DIVISION 06 – WOOD, PLASTICS, AND COMPOSITES

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Section 06 10 00 Rough Carpentry ........................................................................... 1 through 2

DIVISION 07 – THERMAL AND MOISTURE PROTECTION

Section 07 21 00 Thermal Insulation ......................................................................... 1 through 2 07 92 00 Joint Sealants ................................................................................ 1 through 4

DIVISION 08 – OPENINGS

Section 08 11 13 Standard Hollow Metal Doors ........................................................ 1 through 2 08 12 13 Hollow Metal Frames ..................................................................... 1 through 2 08 71 00 Door Hardware .............................................................................. 1 through 3

DIVISION 09 – FINISHES

Section 09 20 00 Plaster and Gypsum Board ............................................................ 1 through 2 09 54 53 Fiberglass Reinforced Panel .......................................................... 1 through 2 09 67 16 Epoxy Flooring .............................................................................. 1 through 3 09 91 00 Painting ......................................................................................... 1 through 7

DIVISION 13 – SPECIAL CONSTRUCTION

Section 13 36 13.13 Self-Supporting Steel Communications Tower ............................... 1 through 8 13 50 00 Antennas ....................................................................................... 1 through 17

DIVISION 15 – RESERVED (NOT USED)

DIVISION 16 – RESERVED (NOT USED)

DIVISION 17 – RESERVED (NOT USED)

DIVISION 18 – RESERVED (NOT USED)

DIVISION 19 – RESERVED (NOT USED)

FACILITY SERVICES SUBGROUP

DIVISION 20 – RESERVED (NOT USED)

DIVISION 22 – PLUMBING

Section 22 00 00 Plumbing ....................................................................................... 1 through 15

DIVISION 23 – HEATING, VENTILATING, AND AIR CONDITIONING (HVAC)

Section 23 00 00 Heating, Ventilating and Air Conditioning ....................................... 1 through 17 23 05 00 General Requirements for Mechanical Work ................................. 1 through 15

DIVISION 24 – RESERVED (NOT USED)

DIVISION 25 – INTEGRATED AUTOMATION (NOT USED)

DIVISION 26 – ELECTRICAL

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Section 26 01 00 Basic Electrical Requirements ....................................................... 1 through 9 26 01 26 Electrical Testing ........................................................................... 1 through 9 26 05 19 Low-Voltage Power Conductors and Cables .................................. 1 through 10 26 05 26 Grounding and Bonding ................................................................. 1 through 16 26 05 29 Electrical Hangers and Supports ................................................... 1 through 5 26 05 33.13 Conduit .......................................................................................... 1 through 10 26 05 33.16 Electrical Boxes ............................................................................. 1 through 3 26 05 36 Interior Cable Tray ......................................................................... 1 through 3 26 05 43 Underground Ducts and Structures ............................................... 1 through 6 26 05 48 Seismic Restraint for Electrical Equipment .................................... 1 only 26 05 53 Electrical Identification ................................................................... 1 through 7 26 24 16 Panelboards .................................................................................. 1 through 8 26 27 26 Wiring Devices .............................................................................. 1 through 7 26 27 26.10 Miscellaneous Electrical Devices ................................................... 1 through 4 26 28 16 Overcurrent Protection Devices ..................................................... 1 through 7 26 32 13 Standby System Generator Set ..................................................... 1 through 14 26 36 23 Automatic Transfer Switches ......................................................... 1 through 10 26 51 13 Interior Lighting .............................................................................. 1 through 9

DIVISION 27 – COMMUNICATIONS

Section 27 53 19 Internal Cellular, Paging and Antenna Systems ............................. 1 only

DIVISION 28 – ELECTRONIC SAFETY AND SECURITY (NOT USED)

DIVISION 29 – RESERVED (NOT USED)

SITE AND INFRASTRUCTURE SUBGROUP

DIVISION 30 – RESERVED (NOT USED)

DIVISION 31 – EARTHWORK

Section 31 01 50 Maintenance of Excavation Support and Protection ....................... 1 through 2 31 10 00 Site Preparation (Clearing and Grubbing) ...................................... 1 only 31 20 00 Earth Moving ................................................................................. 1 through 11 31 23 13 Subgrade Preparation ................................................................... 1 through 8 31 23 16.26 Rock Removal ............................................................................... 1 through 2 31 23 33 Trenching and Backfill ................................................................... 1 through 7 31 25 00 Erosion and Sedimentation Control ............................................... 1 through 5 31 25 13 Storm Water Pollution Prevention Plan .......................................... 1 through 2

DIVISION 32 – EXTERIOR IMPROVEMENTS

Section 32 11 23 Aggregate Base Courses ............................................................... 1 only 32 31 13 Chain Link Fence ........................................................................... 1 through 4

DIVISION 33 – UTILITIES (NOT USED)

DIVISION 34 – TRANSPORTATION (NOT USED)

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DIVISION 35 – WATERWAY AND MARINE CONSTRUCTION (NOT USED)

DIVISION 36 – RESERVED (NOT USED)

DIVISION 37 – RESERVED (NOT USED)

DIVISION 38 – RESERVED (NOT USED)

DIVISION 39 – RESERVED (NOT USED)

PROCESS EQUIPMENT SUBGROUP (NOT USED)

BOOK III – BUNCHGRASS MTN

DIVISION 02 – EXISTING CONDITIONS

Section 02 40 00 Demolition ..................................................................................... 1 through 2 02 41 16 Groundwork for Structures ............................................................. 1 through 3

DIVISION 03 – CONCRETE

Section 03 10 00 Concrete Forming and Accessories ............................................... 1 through 5 03 20 00 Concrete Reinforcing ..................................................................... 1 through 3 03 30 00 Cast-In-Place Concrete ................................................................. 1 through 8

DIVISION 04 – MASONRY

Section 04 22 00 Concrete Masonry Unit .................................................................. 1 through 9

DIVISION 05 – METALS

Section 05 05 23 Metal Fastenings ........................................................................... 1 through 9 05 12 00 Structural Steel Framing ................................................................ 1 through 3 05 30 00 Metal Decking ................................................................................ 1 through 3 05 41 00 Steel Studs .................................................................................... 1 through 4

DIVISION 06 – WOOD

Section 06 10 00 Rough Carpentry ........................................................................... 1 through 2

DIVISION 07 – THERMAL AND MOISTURE PROTECTION

Section 07 21 00 Thermal Insulation ......................................................................... 1 through 2 07 92 00 Joint Sealants ................................................................................ 1 through 4

DIVISION 08 – WINDOWS AND DOORS

Section 08 11 13.13 Standard Hollow Metal Doors ........................................................ 1 through 2 08 12 13 Hollow Metal Frames ..................................................................... 1 through 2 08 71 00 Door Hardware .............................................................................. 1 through 3

DIVISION 09 – FINISHES

Section 09 20 00 Plaster Gypsum Board................................................................... 1 through 2

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09 54 53 Fiberglass Reinforced Panel .......................................................... 1 through 2 09 67 16 Epoxy Flooring .............................................................................. 1 through 3 09 91 00 Painting ......................................................................................... 1 through 7

DIVISION 13 – SPECIAL CONSTRUCTION

Section 13 36 13.13 Self-Supporting Steel Communications Tower ............................... 1 through 8 13 50 00 Antennas ....................................................................................... 1 through 17

DIVISION 22 – PLUMBING

Section 22 00 00 Plumbing ....................................................................................... 1 through 14

DIVISION 23 – HEATING, VENTILATING AND AIR CONDITIONING

Section 23 00 00 Heating, Ventilating and Air Conditioning ....................................... 1 through 17 23 05 00 General Requirements for Mechanical Work ................................. 1 through 15

DIVISION 26 – ELECTRICAL

Section 26 01 00 Basic Electrical Requirements ....................................................... 1 through 9 26 01 26 Electrical Testing ........................................................................... 1 through 9 26 05 19 Low-Voltage Power Conductors and Cables .................................. 1 through 10 26 05 26 Grounding and Bonding ................................................................. 1 through 16 26 05 29 Electrical Hangers and Supports ................................................... 1 through 4 26 05 33.13 Conduit .......................................................................................... 1 through 10 26 05 33.16 Electrical Boxes ............................................................................. 1 through 3 26 05 36 Interior Cable Tray ......................................................................... 1 through 3 26 05 43 Underground Ducts and Structures ............................................... 1 through 6 26 05 48 Seismic Restraint for Electrical Equipment .................................... 1 only 26 05 53 Electrical Identification ................................................................... 1 through 7 26 24 16 Panelboards .................................................................................. 1 through 8 26 27 26 Wiring Devises .............................................................................. 1 through 7 26 27 26.10 Miscellaneous Electrical Devices ................................................... 1 through 4 26 28 16 Overcurrent Protection Devices ..................................................... 1 through 7 26 32 13 Stanby System Generator Set ....................................................... 1 through 15 26 36 23 Automatic Transfer Switches ......................................................... 1 through 10 26 51 13 Interior Lighting .............................................................................. 1 through 9

DIVISION 27 – COMMUNICATIONS

Section 27 53 19 Internal Cellular, Paging and Antenna Systems ............................. 1 only

DIVISION 31 – EARTHWORK

Section 31 01 50 Maintenance of Excavation Support and Protection ....................... 1 through 2 31 10 00 Site Preparation (Clearing and Grubbing) ...................................... 1 only 31 20 00 Earth Moving ................................................................................. 1 through 11 31 23 13 Subgrade Preparation ................................................................... 1 through 8 31 23 16.26 Rock Removal ............................................................................... 1 through 2 31 23 33 Trenching and Backfill ................................................................... 1 through 7 31 25 00 Erosion and Sedimentation Control ............................................... 1 through 5 31 25 13 Strom Water Pollution Prevention Plan .......................................... 1 through 2

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DIVISION 32 – EXTERIOR IMPROVEMENTS

Section 32 11 23 Aggregate Base Courses ............................................................... 1 only 32 31 13 Chain Link Fence ........................................................................... 1 through 4

BOOK IV - MT. PIERCE

DIVISION 02 – EXISTING CONDITIONS

Section 02 40 00 Demolition ..................................................................................... 1 through 2 02 41 16 Groundwork for Structures ............................................................. 1 through 3

DIVISION 03 – CONCRETE

Section 03 10 00 Concrete Forming and Accessories ............................................... 1 through 5 03 20 00 Concrete Reinforcing ..................................................................... 1 through 3 03 30 00 Cast-In-Place Concrete ................................................................. 1 through 8

DIVISION 04 – MASONRY

Section 04 22 00 Concrete Masonry Units ................................................................ 1 through 9

DIVISION 05 – METALS

Section 05 05 23 Metal Fastenings ........................................................................... 1 through 9 05 12 00 Structural Steel Framing ................................................................ 1 through 3 05 30 00 Metal Decking ................................................................................ 1 through 3 05 41 00 Steel Studs .................................................................................... 1 through 4

DIVISION 06 – WOOD, PLASTICS AND COMPOSITES

Section 06 10 00 Rough Carpentry ........................................................................... 1 through 2

DIVISION 07 – THERMAL AND MOISTURE PROTECTION

Section 07 21 00 Thermal Insulation ......................................................................... 1 through 2 07 92 00 Joint Sealants ................................................................................ 1 through 4

DIVISION 08 – OPENINGS

Section 08 11 13.13 Standard Hollow Metal Doors ........................................................ 1 through 2 08 12 13 Hollow Metal Frames ..................................................................... 1 through 2 08 71 00 Door Hardware .............................................................................. 1 through 3

DIVISION 9 – FINISHES

Section 09 20 00 Plaster Gypsum Board................................................................... 1 through 2 09 54 53 Fiberglass Reinforced Panel .......................................................... 1 through 2 09 67 16 Epoxy Flooring .............................................................................. 1 through 3 09 91 00 Painting ......................................................................................... 1 through 7

DIVISIOIN 13 – SPECIAL CONSTRUCTION

Section 13 36 13.13 Self-Supporting Steel Communications Tower ............................... 1 through 8

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13 50 00 Antennas ....................................................................................... 1 through 18

DIVISION 22 – PLUMBING

Section 22 00 00 Plumbing ....................................................................................... 1 through 14

DIVISION 23 – HEATING, VENTILATING AND AIR CONDITIONING

Section 23 00 00 Heating, Ventilating and Air Conditioning ....................................... 1 through 17 23 05 00 General Requirements for Mechanical Work ................................. 1 through 15

DIVISION 26 – ELECTRICAL

Section 26 01 00 Basic Electrical Requirements ....................................................... 1 through 9 26 01 26 Electrical Testing ........................................................................... 1 through 9 26 05 19 Low-Voltage Power Conductors and Cables .................................. 1 through 10 26 05 26 Grounding and Bonding ................................................................. 1 through 16 26 05 29 Electrical Hangers and Supports ................................................... 1 through 4 26 05 33.13 Conduit .......................................................................................... 1 through 10 26 05 33.16 Electrical Boxes ............................................................................. 1 through 3 26 05 36 Interior Cable Tray ......................................................................... 1 through 3 26 05 43 Underground Ducts and Structures ............................................... 1 through 6 26 05 48 Seismic Restraint for Electrical Equipment .................................... 1 only 26 05 53 Electrical Identification ................................................................... 1 through 7 26 24 16 Panelboards .................................................................................. 1 through 8 26 27 26 Wiring Devices .............................................................................. 1 through 7 26 27 26.10 Miscellaneous Electrical Devices ................................................... 1 through 4 26 28 16 Overcurrent Protection Devices ..................................................... 1 through 7 26 32 13 Standby System Generator Set ..................................................... 1 through 14 26 36 23 Automatic Transfer Switches ......................................................... 1 through 10 26 51 13 Interior Lighting .............................................................................. 1 through 9

DIVISION 27 – COMMUNICATIONS

Section 27 53 19 Internal Cellular, Paging and Antenna System ............................... 1 only

DIVISION 31 – EARTHWORK

Section 31 01 50 Maintenance of Excavation Support and Protection ....................... 1 through 2 31 10 00 Site Preparation (Clearing and Grubbing) ...................................... 1 only 31 20 00 Earth Moving ................................................................................. 1 through 11 31 23 13 Subgrade Preparation ................................................................... 1 through 8 31 23 16.26 Rock Removal ............................................................................... 1 through 2 31 23 33 Trenching and Backfill ................................................................... 1 through 7 31 25 00 Erosion and Sedimentation Control ............................................... 1 through 5 31 25 13 Strom Water Pollution Prevention Plan .......................................... 1 through 2

DIVISION 32 – EXTERIOR IMPROVEMENTS

Section 32 11 23 Aggregate Base Courses ............................................................... 1 only 32 31 13 Chain Link Fence ........................................................................... 1 through 4

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BOOK V - APPENDICES

A. Geotechnical Investigations:

A Pratt Final Geotechnical

Investigation 1 through 37

B Bunchgrass Final Geotechnical Investigation

1 through 39

E Pierce Final Geotechnical Investigation

1 through 52

B. Environmental Commitment Tables

A Pratt EC Table 1 through 6 B Bunchgrass EC Table 1 through 6 E Mt. Pierce EC Table 1 through 5

C. Miscellaneous Tower Equipment Information

1 Antenna Testing &

Analysis 1 through 11

2 Antenna Wrapping Procedure

1 through 5

3 Cal OES PSC & General Contractor Inspection and Acceptance Criteria

1 through 4

4 Grounding Requirement for Vault and Tower

1 through 13

5 Tower Install Coax - Waveguide

1 through 3

END OF DOCUMENT

LIST OF DRAWINGS

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DOCUMENT 00 01 15

PRATT MTN. – INCREMENT 1

Sheet Number Description

GENERAL

PM -G001 COVER SHEET

PM -G002 DRAWING INDEX, DESIGN CRITERIA AND SITE ORIENTATION

PM -G003 ABBREVIATIONS AND SYMBOLS

CIVIL

PM -C101 EXISTING SITE DEMOLITION AND CONSTRUCTION

SEQUENCING PLAN

PM -C102 SITE AND GRADING PLAN

PM -C501 CIVIL SECTIONS AND DETAILS

PM-C502 COMMON SITE DETAILS

ARCHITECTURAL

PM -A101 VAULT FLOOR PLAN, ROOF PLAN AND BUILDING

ELEVATIONS

PM -A102 GENERATOR VAULT PLANS, ELEVATIONS AND SECTION

PM -A501 ARCHITECTURAL DETAILS

PM -A502 ARCHITECTURAL DETAILS

STRUCTURAL

PM -S001 STRUCTURAL NOTES

PM -S101 VAULT FOUNDATION AND ROOF FRAMING PLAN AND

SECTION

PM -S102 TOWER FOUNDATION PLAN AND ELEVATION

PM -S501 COMMON STRUCTURAL DETAILS

PM -S502 STRUCTURAL DETAILS

PM -S503 STRUCTURAL DETAILS

PM -S701 FEEDLINE BRIDGE

PM -S702 FEEDLINE BRIDGE

MECHANICAL

PM -M001 MECHANICAL SYMBOLS, LEGEND, ABBREVIATIONS, AND

GENERAL NOTES

PM -M101 LARGE VAULT – HVAC

PM -M102 GENERATOR VAULT – HVAC

PM -M501 MECHANICAL DETAILS

PM -M601 MECHANICAL SCHEDULES

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ELECTRICAL

PM -E001 ELECTRICAL SYMBOLS LEGEND, ABBREVIATIONS AND

GENERAL NOTES

PM -E101 ELECTRICAL SITE PLAN

PM -E102 LARGE VAULT – LIGHTING, POWER, EQUIPMENT AND

GROUNDING

PM -E103 GENERATOR VAULT LIGHTING, POWER, EQUIPMENT AND

GROUNDING

PM -E104 LARGE VAULT INTERIOR ELEVATIONS – 1

PM -E105 LARGE VAULT INTERIOR ELECATIONS – 2

PM -E501 ELECTRICAL DETAILS – 1

PM -E502 ELECTRICAL DETAILS – 2

PM -E503 ELECTRICAL DETAILS – 3

PM -E504 ELECTRICAL DETAILS – 4

PM -E505 ELECTRICAL DETAILS – 5

PM -E506 ELECTRICAL DETAILS – 6

PM -E601 SINGLE LINE DIAGRAM AND LOAD CALCULATION

PM -E602 ELECTRICAL SCHEDULES – 1

PM -E603 ELECTRICAL SCHEDULES – 2

PM -E604 ALARM STATUS REPORTING SCHEMATICS

PM -E605 ALARM POINT DESCRIPTIONS

PM -E606 INTERCONNECT DIAGRAM VHF ANTENNAS AND RF

CABLING – 1

PM -E607 INTERCONNECT DIAGRAM VHF ANTENNAS AND RF

CABLING – 2

PM -E608 INTERCONNECT DIAGRAM VHF ANTENNAS AND RF

CABLING – 3

PM -E609 SITE ANTENNA LAYOUT AND PRESSURIZATION

EQUIPMENT – 1

PM -E610 SITE ANTENNA LAYOUT AND PRESSURIZATION

EQUIPMENT – 2

PM-E611 -48VDC CRIS OES INTERCONNECT DIAGRAM

PM-E612 -48VDC MW OES INTERCONNECT DIAGRAM

PM-E613 +12VDC OES INTERCONNECT DIAGRAM

TOWER STRUCTURAL DRAWINGS

T-1 COVER SHEET & DRAWING INDEX

S-1 ELEVATION VIEW/NOTES

S-1.1 SST SECTION ALLOWABLE MEMBER FORCES

S-1.2 MONOPOLE SECTIONS ALLOWABLE FORCES

S-2 UPPER POLE

S-3 LOWER POLE

S-4 TOWER SECTION 13V - NESTED POLE

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S-5 TOWER SECTION 13V

S-6 TOWER SECTION 15ST

S-6.1 TOWER SECTION 15ST CONT.

S-7 TOWER SECTION 17ST

S-7.1 TOWER SECTION 17ST CONT.

S-8 TOWER SECTION 19ST

S-9 TYPICAL GRATING/BRACING

S-10 TYPICAL HANDRAIL/DIAGONAL PIPE LIGHTING ROD

EXTENTSION, & SAFETY CLIMB KITS

S-11 CENTER MAST

S-12 COAX CAGE / CLIMBING LADDER, ANTI-CLIMB, & BUS BAR

S-13 ANTENNA LOCATION ELEVATION VIEWS

S-13.1 ANTENNA LOCATION PLAN VIEWS

S-14 FULLY LOADED FACE MOUNTED MICROWAVES

S-14.1 FULLY LOADED LEG MOUNTED MICROWAVES

S-14.2 FULLY LOADED VHF/UHF ANTENNA LOCATIONS

S-15 MW ICE BRIDGE DETAILS

S-15.1 MW ANTENNA ICE SHIELD DETAILS

S-16 MICROWAVE MOUNT KITS

S-17 UHF / VHF ANTENNA MOUNT KITS

S-18 LEG – ELEVATION ID PLATES

S-19 TOWER FOUNDATION SLAB/PIERS

RADIO AND MICROWAVE ANTENNA MOUNTING BRACKETS DRAWINGS

CO-TA1 COVER SHEET AND INDEX

CO-TA1.1 DSA 103

CO-TA2 TOWER STRUCTURAL NOTES

CO-TA3 SITE PRO BRACKET DETAILS

CO-TA5.2 TOWER ANTENNA MOUNTING DETAILS (AMPHENOL ANTEL)

CO-TA6 TOWER ANTENNA MOUNTING DETAILS

(ANDREW/COMMSCOPE)

CO-TA7.2 TOWER ANTENNA MOUNTING DETAILS (SINCLAIR)

CO-TA9 TOWER ANTENNA MOUNTING DETAILS (M2/KRECO)

CO-TA10 TOWER ANTENNA MOUNTING DETAILS

(COMMSCOPE/RFS/SINCLAIR)

CO-TA12 TOWER ANTENNA MOUNTING DETAILS (SCALA)

CO-TA18.1 TOWER ANTENNA MOUNTING DETAILS (TELEWAVE)

BUNCHGRASS MTN. – INCREMENT 2

GENERAL

BG-G001 COVER SHEET

BG-G002 DRAWING INDEX, DESIGN CRITERIA AND SITE ORIENTATION

BG-G003 ABBREVIATIONS AND SYMBOLS

CIVIL

BG-C101 EXISTING SITE DEMOLITION AND CONSTRUCTION

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SEQUENCING PLAN

BG-C102 SITE AND GRADING PLAN

BG-C501 COMMON SITE DETAILS

BG-C502 COMMON SITE DETAILS

ARCHITECTURAL

BG-A101 VAULT FLOOR PLAN AND ROOF PLAN AND BUILDING

ELEVATIONS

BG-A501 ARCHITECTURAL DETAILS

BG-A502 ARCHITECTURAL DETAILS

STRUCTURAL

BG-S001 STRUCTURAL NOTES

BG-S101 VAULT FOUNDATION, ROOF FRAMING PLAN AND

SECTION

BG-S102 TOWER FOUNDATION PLAN AND ELEVATION

BG-S501 COMMON STRUCTURAL DETAILS

BG-S502 STRUCTURAL DETAILS

BG-S503 STRUCTURAL DETAILS

BG-S701 FEEDLINE BRIDGE

BG-S702 FEEDLINE BRIDGE

MECHANICAL

BG-M001 MECHANICAL SYMBOLS, LEGEND, ABBREVIATIONS, AND

GENERAL NOTES

BG-M101 MEDIUM VAULT – HVAC

BG-M501 MECHANICAL DETAILS

BG-M601 MECHANICAL SCHEDULES

ELECTRICAL

BG-E001 ELECTRICAL SYMBOLS LEGEND, ABBREVIATIONS AND

GENERAL NOTES

BG-E101 ELECTRICAL SITE PLAN

BG-E102 MEDIUM VAULT – LIGHTING, POWER, EQUIPMENT AND

GROUNDING

BG-E103 MEDIUM VAULT INTERIOR ELEVATIONS

BG-E501 ELECTRICAL DETAILS – 1

BG-E502 ELECTRICAL DETAILS – 2

BG-E503 ELECTRICAL DETAILS – 3

BG-E504 ELECTRICAL DETAILS – 4

BG-E505 ELECTRICAL DETAILS – 5

BG-E506 ELECTRICAL DETAILS – 6

BG-E601 SINGLE LINE DIAGRAM AND LOAD CALCULATION

BG-E602 ELECTRICAL SCHEDULES – 1

BG-E603 ELECTRICAL SCHEDULES – 2

BG-E604 ALARM STATUS REPORTING SCHEMATICS

BG-E605 ALARM POINT DESCRIPTIONS

BG-E606 INTERCONNECT DIAGRAM VHF ANTENNAS AND RF

CABLING – 1

RESDMSTR: 02/03/2014 00 01 15 - 5 01512A, B, E

BG-E607 INTERCONNECT DIAGRAM VHF ANTENNAS AND RF

CABLING – 2

BG-E608 SITE ANTENNA LAYOUT AND PRESSURIZATION

EQUIPMENT – 1

BG-E609 SITE ANTENNA LAYOUT AND PRESSURIZATION

EQUIPMENT – 2

BG-E610 -48VDC CRIS OES INTERCONNECT DIAGRAM

BG-E611 -48VDC MW OES INTERCONNECT DIAGRAM

BG-E612 +12VDC OES INTERCONNECT DIAGRAM

WESTERN UTILITY TELECOM, INC. DRAWING INDEX

T-1 COVER SHEET & DRAWING INDEX

S-1 ELEVATION VIEW/NOTES

S-1.1 SST SECTION ALLOWABLE MEMBER FORCES

S-1.2 MONOPOLE SECTION ALLOWABLE MEMBER FORCES

S-2 UPPER POLE

S-3 LOWER POLE

S-4 TOWER SECTION 13V NESTED POLE

S-5 TOWER SECTION 13V

S-6 TOWER SECTION 15ST

S-6.1 TOWER SECTION 15ST CONT.

S-7 TOWER SECTION 17ST

S-7.1 TOWER SECTION 17ST CONT.

S-8 TOWER SECTION 19ST

S-9 TYPICAL GRATING/BRACING

S-10 TYPICAL HAND RAIL/DIAGNOL PIPE LIGHTING ROD

EXTENSION, SAFETY & SAFETYCLIMB KITS

S-11 CENTER MAST

S-12 COAX CAGE/CLIMBING LADDER, ANTI-CLIMB, & BUS BAR

S-13 ANTENNA LOCATION ELEVATION VIEWS

S-13.1 ANTENNA LOCATION PLAN VIEWS

S-14 FULLY LOADED FACE MOUNTED MICROWAVES

S-14.1 FULLY LOADED LEG MOUNTED MICROWAVES

S-14.2 FULLY LOADED VHF/UHF ANTENNA LOCATIONS

S-15 MW ICE BRIDGE DETAILS

S-15.1 MW ANTENNA ICE SHIELD DETAILS

S-16 MICROWAVE MOUNT KITS

S-17 UHF/VHF ANTENNA MOUNT KITS

S-18 LEG/ELEVATION ID PLATES

S-19 TOWER FOUNDATION SLAB/PIERS

SATE OF CALIFORNIA

CO-TA1 COVER SHEET AND INDEX

CO-TA1.1 DSA 103

CO-TA2 TOWER STRUCTURAL NOTES

CO-TA3 SITE PRO BRACKET DETAILS

CO-TA5.2 TOWER ANTENNA MOUNTING DETAILS (AMPHENOL ANTEL)

CO-TA6 TOWER ANTENNA MOUNTING DETAILS

(ANDREW/COMMSCOPE)

CO-TA7.2 TOWER ANTENNA MOUNTING DETAILS (SINCLAIR)

RESDMSTR: 02/03/2014 00 01 15 - 6 01512A, B, E

CO-TA9 TOWER ANTENNA MOUNTING DETAILS (M2/KRECO)

CO-TA10 TOWER ANTENNA MOUNTING DETAILS

(COMMSCOPE/RFS/SINCLAIR)

CO-TA10.1 TOWER ANTENNA MOUNTING DETAILS (RFS/SINCLAIR)

CO-TA14.1 TOWER ANTENNA MOUNTING DETAILS (SCALA)

CO-TA18 TOWER ANTENNA MOUNTING DETAILS (TELEWAVE)

MT. PIERCE – INCREMENT 3

GENERAL

MP-G001 COVER SHEET

MP-G002 DRAWING INDEX, DESIGN CRITERIA AND SITE ORIENTATION

MP-G003 ABBREVIATIONS AND SYMBOLS

CIVIL

MP-C101 EXISTING SITE DEMOLITION AND CONSTRUCTION

SEQUENCING

MP-C102 SITE AND GRADING PLAN

MP-C501 CIVIL SECTIONS AND DETAILS

MP-C502 COMMON SITE DETAILS

ARCHITECTURAL

MP-A101 VAULT FLOOR PLAN, ROOF PLAN AND BUILDING

ELEVATIONS

MP-A102 GENERATOR VAULT PLANS, ELEVATIONS AND SECTION

MP-A501 ARCHITECTURAL DETAILS

MP-A502 ARCHITECTURAL DETAILS

CIVIL

MP-S001 STRUCTURAL NOTES

MP-S101 VAULT FOUNDATION AND ROOF FRAMING PLAN AND

SECTION

MP-S102 TOWER FOUNDATION PLAN AND ELEVATION

MP-S501 COMMON STRUCTURAL DETAILS

MP-S502 STRUCTURAL DETAILS

MP-S503 STRUCTURAL DETAILS

MP-S701 FEEDLINE BRIDGE

MP-S702 FEEDLINE BRIDGE

MECHANICAL

MP-M001 MECHANICAL SYMBOLS, LEGEND, ABBREVIATIONS, AND

GENERAL NOTES

MP-M101 LARGE VAULT – HVAC

MP-M102 GENERATOR VAULT – HVAC

RESDMSTR: 02/03/2014 00 01 15 - 7 01512A, B, E

MP-M501 MECHANICAL DETAILS

MP-M601 MECHANICAL SCHEDULES

ELECTRICAL

MP-E001 ELECTRICAL SYMBOLS LEGEND, ABBREVIATIONS AND

GENERAL NOTES

MP-E101 ELECTRICAL SITE PLAN

MP-E102 LARGE VAULT – LIGHTING, POWER, EQUIPMENT AND

GROUNDING

MP-E103 GENERATOR VAULT – LIGHTING, POWER, EQUIPMENT AND

GROUNDING

MP-E104 LARGE VAULT – INTERIOR ELEVATIONS – 1

MP-E105 LARGE VAULT – INTERIOR ELEVATIONS – 2

MP-E501 ELECTRICAL DETAILS – 1

MP-E502 ELECTRICAL DETAILS – 2

MP-E503 ELECTRICAL DETAILS – 3

MP-E504 ELECTRICAL DETAILS – 4

MP-E505 ELECTRICAL DETAILS – 5

MP-E506 ELECTRICAL DETAILS – 6

MP-E601 SINGLE LINE DIAGRAM AND LOAD CALCULATION

MP-E602 ELECTRICAL SCHEDULES – 1

MP-E603 ELECTRICAL SCHEDULES – 2

MP-E604 ALARM STATUS REPORTING SCHEMATICS

MP-E605 ALARM POINT DESCRIPTIONS

MP-E606 INTERCONNECT DIAGRAM VHF ANTENNAS AND RF

CABLING – 1

MP-E607 INTERCONNECT DIAGRAM VHF ANTENNAS AND RF

CABLING – 2

MP-E608 INTERCONNECT DIAGRAM VHF ANTENNAS AND RF

CABLING – 3

MP-E609 INTERCONNECT DIAGRAM VHF ANTENNAS AND RF

CABLING – 4

MP-E610 INTERCONNECT DIAGRAM VHF ANTENNAS AND RF

CABLING – 5

MP-E611 SITE ANTENNA LAYOUT AND PRESSURIZATION

EQUIPMENT – 1

MP-E612 SITE ANTENNA LAYOUT AND PRESSURIZATION

EQUIPMENT – 2

PM-E613 -48VDC CRIS OES INTERCONNECT DIAGRAM

PM-E614 -48VDC MW OES INTERCONNECT DIAGRAM

PM-E615 +12VDC OES INTERCONNECT DIAGRAM

TOWER STRUCTURAL SHEETS

T-1 COVER SHEET/DRAWING INDEX

S-1 ELEVATION VIEW/NOTES

S-1.1 SST SECTION ALLOWABLE MEMBER FORCES

S-1.2 MONOPOLE SECTION ALLOWABLE MEMBER FORCES

S-2 UPPER POLE

S-3 LOWER POLE

S-4 TOWER SECTION 13V – NESTED POLE

RESDMSTR: 02/03/2014 00 01 15 - 8 01512A, B, E

S-5 TOWER SECTION 13V

S-6 TOWER SECTION 15ST

S-6.1 TOWER SECTION 15ST CONT.

S-7 TOWER SECTION 17ST

S-7.1 TOWER SECTION 17ST CONT.

S-8 TOWER SECTION 19ST

S-9 TYPICAL GRATING/BRACING

S-10 TYPICAL HAND RAIL/DIAGANOL PIPE, LIGHTING ROD

EXTENSION, & SAFETY CLIMB KITS

S-11 CENTER MAST

S-12 COAX CAGE/CLIMBING LADDER, ANTI-CLIMB, & BUS BAR

S-13 ANETNNA LOCATION ELEVATION VIEWS

S-13.1 ANTENNA LOCATION PLAN VIEWS

S-14 FULLY LOADED FACE MOUNTED MICROWAVES

S-14.1 FULLY LOADED LEG MOUNTED MICROWAVES

S-14.2 FULLY LOADED VHF/UHF ANTENNA LOCATIONS

S-15 MW ICE BRIDGE DETAILS

S-15.1 MW ANTENNA ICE SHIELD DETAILS

S-16 MICROWAVE MOUNT KITS

S-17 UHF/VHF ANTENNA MOUNT KITS

S-18 LEG/ELEVATION ID PLATES

S-19 TOWER FOUNDATION SLAB/PIERS

STRUCTURAL DETAILS FOR RADIO AND MICROWAVE ANTENNA MOUNTING

BRACKETS

CO-TA1 COVER SHEET AND INDEX

CO-TA1.1 DSA 103

CO-TA2 TOWER STRUCTURAL NOTES

CO-TA3 SITE PRO BRACKET DETAILS

CO-TA4 TOWER ANTENNA MOUNTING DETAILS (ANDREW)

CO-TA5.2 TOWER ANTENNA MOUNTING DETAILS (AMPHENOL ANTEL)

CO-TA6 TOWER ANTENNA MOUNTING DETAILS

(ANDREW/COMMSCOPE)

CO-TA6.1 TOWER ANTENNA MOUNTING DETAILS

(ANDREW/COMMSCOPE)

CO-TA7 TOWER ANTENNA MOUNTING DETAILS (HUSTLER/ANTENNA

EXPERT/DIAMOND)

CO-TA7.2 TOWER ANTENNA MOUNTING DETAILS (SINCLAIR)

CO-TA9 TOWER ANTENNA MOUNTING DETAILS (M2/KRECO)

CO-TA10 TOWER ANTENNA MOUNTING DETAILS

(COMMSCOPE/RFS/SINCLAIR)

CO-TA11.2 TOWER ANTENNA MOUNTING DETAILS (DB SPECTRA/SCALA)

CO-TA13 TOWER ANTENNA MOUNTING DETAILS (SCALA)

CO-TA14 TOWER ANTENNA MOUNTING DETAILS (SCALA)

CO-TA14.1 TOWER ANTENNA MOUNTING DETAILS (SCALA)

CO-TA15 TOWER ANTENNA MOUNTING DETAILS (SINCLAIR)

CO-TA17 TOWER ANTENNA MOUNTING DETAILS (SINCLAIR)

CO-TA18 TOWER ANTENNA MOUNTING DETAILS (TELEWAVE)

END OF DOCUMENT

PROJECT MANAGEMENT AND DEVELOPMENT BRANCH

Appendix A – Geotechnical Investigations

A. Geotechnical Investigations

1. Pratt Mountain

2. Bunchgrass Mountain

3. Mt. Pierce

FOR:

PHASE V COMMUNICATION FACILITIES

REPLACEMENT – GROUP A:

1512A - PRATT MTN.

1512B - BUNCHGRASS MTN.

1512E - MT. PIERCE

CALIFORNIA DEPARTMENT OF FORESTRY AND

FIRE PROTECTION

HUMBOLDT & SHASTA COUNTIES, CALIFORNIA

Courtney Wetsell, Project Director Telephone Number 279.799.4650 West Sacramento, California

8/14/2026 1512A, 1512B, 1512E

PROJECT MANAGEMENT AND DEVELOPMENT BRANCH

Geotechnical Investigation - A.1

1. Pratt Mountain

FOR:

PHASE V COMMUNICATION FACILITIES

REPLACEMENT – GROUP A:

1512A - PRATT MTN.

CALIFORNIA DEPARTMENT OF FORESTRY AND

FIRE PROTECTION

HUMBOLDT & SHASTA COUNTIES, CALIFORNIA

Courtney Wetsell, Project Director Telephone Number 279.799.4650 West Sacramento, California

8/14/2026 1512A

Geotechnical Investigation Pratt Mountain Telecommunications Replacement Humboldt County, CA

Department of General Services

11136839.70 July 2019

GHD | Geotechnical Investigation | 11136839.70 | Page i

July 8, 2019

Aubree French Department of General Services, Real Estate Services Division Project Management and Development Branch 707 Third Street, 4th Floor Sacramento, California 95605

RE: Geotechnical Investigation, Pratt Mountain Telecommunications Replacement Humboldt County, California

Dear Ms. French, GHD Inc (GHD) is pleased to present the attached report containing the results of our geotechnical investigation for the proposed Calfire Phase V Telecommunications Replacement project at Pratt Mountain in Humboldt County, California. It is our understanding that improvements are planned for the site that include a new 120-foot-tall tower with a 28-foot lightning mast, vault structure, generator and propane tank.

The accompanying report presents our findings, conclusions, and recommendations developed from our geotechnical investigation. Contained in the report are geotechnical design criteria and recommendations for design and construction of the proposed improvements. The results of the subsurface exploration and laboratory testing programs, which form the basis of our recommendations, are also included in the report.

On the basis of our investigation, the site is suitable, from a geotechnical perspective, to receive the planned improvements provided the recommendations presented in the report are incorporated into the design and construction of the project.

If you have any questions regarding the information contained in this report, or if we may be of further assistance, please do not hesitate to contact us.

Sincerely, GHD Inc

Eric S. Smith, P.E. Christopher D. Trumbull, P.E., G.E., DG.E Project Engineer Senior Geotechnical Engineer

GHD | Geotechnical Investigation | 11136839.70 | Page ii

Table of Contents

1. Introduction

1.1 Project Description

1.2 Purpose and Scope of Work

2. Field Exploration and Laboratory Testing

2.1 Field Exploration

2.2 Seismic Refraction

2.3 Geotechnical Laboratory Testing

3. Geologic and Subsurface Conditions

3.1 Site Conditions

3.2 General Geology and Faulting

3.2.1 Geologic Setting

3.2.2 Nearest Faulting

3.3 Subsurface Conditions

4. Conclusions

4.1 Excavatability

4.2 Ground Shaking

4.3 Corrosion

4.3.1 Corrosion Potential for Ferrous Pipes

4.3.2 Corrosion Potential for Reinforced Concrete

4.3.3 Summary of Results

4.4 Expansion Potential

4.5 Liquefaction

5. Recommendations

5.1 Earthwork

5.1.1 Excavatability

5.1.2 Site Preparation

5.1.3 General Subgrade Preparation

5.1.4 Engineered Fill

5.1.5 Compaction

5.1.6 Trench Backfill and Pipe Bedding

5.1.7 Temporary Slopes/Shoring

5.2 Foundations

5.2.1 Shallow Foundations

5.3 Deep Foundations

5.3.2 Foundation Excavation Observation

5.4 Seismic Design

GHD | Geotechnical Investigation | 11136839.70 | Page iii

5.5 Surface Drainage and Erosion Control

5.6 Access Road Recommendations

5.7 Plan Review and Construction Observation

6. References

7. Limitations

Figure Index

Figure 5.1 Allowable Pile Capacity

Table Index

Table 4.1 Soil Corrosion Results

Table 5.1 Import Fill Specifications

Table 5.2 LPILE Material Parameters

Table 5.3 Seismic Design Criteria

Table 5.4 Aggregate Surface Thickness Recommendations

Appendix Index Appendix A Figures

Appendix B Logs of Borings

Appendix C Seismic Refraction

Appendix D Geotechnical Laboratory Test Results

GHD | Geotechnical Investigation | 11136839.70 | Page iv

Distribution

To: Department of General Services

Aubree French

707 Third Street, 4th Floor

West Sacramento, CA 95605

From: GHD

Christopher Trumbull, P.E., G.E., D.GE

Eric Smith, P.E.

4080 Plaza Goldorado Circle, Suite B

Cameron Park, CA 95682

GHD | Geotechnical Investigation | 11136839.70 | Page 1

1. Introduction

This report presents the findings, conclusions, and recommendations developed from a geotechnical engineering investigation for the Calfire Phase V Telecommunications Replacement Project at Pratt Mountain. The investigation was conducted in accordance with Agreement Number 2130 between GHD, Inc. (GHD) and the Department of General Services, RESD, Project Management & Development Branch, dated October 24, 2017. A geologic hazards report, under separate cover, was also prepared for this site.

1.1 Project Description

Pratt Mountain Telecommunications Tower is located in Humboldt County east of Garberville, California, as shown on Figure A-1, Vicinity Map (40.119 latitude, -123.693 longitude). The site is along the north coast backbone of Calfire facilities and serves as the only microwave path to the Humboldt-Del Norte Unit Local Net, used to dispatch three fire stations and one inmate camp.

Failure at the site would impair emergency response to structure fires, traffic accidents, hazardous material spills, and wildfires in the service area.

To maintain these existing services, a 80-foot-tall, 22-foot-wide (at base) tower is proposed at the site in addition to a new generator, propane tank, and vault structure. The tower will also include a 28-foot-tall lightning mast. The vault structure will be supported on continuous strip footing, and the tower will be supported on a large mat foundation or a combination of mat and pile foundation system. The layout of the proposed features is shown on Figure A-2, Exploration Map.

1.2 Purpose and Scope of Work

The purpose of this study was to evaluate the suitability of the project site, from a geotechnical perspective, for the proposed improvements. The main objectives of the investigation were to characterize the subsurface materials, perform engineering analyses, develop geotechnical recommendations and criteria, and document our findings, conclusions, and recommendations in this report.

The scope of the geotechnical investigation included the following tasks:

• A review of published geologic and geotechnical material pertaining to the site vicinity

• A field exploration program consisting of three exploratory borings drilled to a maximum depth of approximately 35 feet below ground surface (bgs) and one seismic refraction line within the site to characterize the subsurface conditions

• Geotechnical laboratory testing on select soil samples collected from the borings

• Engineering analyses to develop geotechnical design criteria and recommendations for the proposed project

• Preparation of this report

GHD | Geotechnical Investigation | 11136839.70 | Page 2

2. Field Exploration and Laboratory Testing

2.1 Field Exploration

Three borings were drilled between June 27 and August 10, 2018 at the approximate locations shown on Figure A-2. The borings were located in the field based on measured distances from existing features and aerial maps. The borings were drilled to a maximum depth of approximately 35 feet bgs under the supervision of GHD technical personnel utilizing truck- and track-mounted CME-55 drill rigs equipped with an automatic hammer with a weight of 140 pounds and a drop of 30 inches. Coring was started at a depth of 21½ feet bgs on Boring B-1.

The number of blows required for each 6-inch increment of drive were recorded and the cumulative blow count for the 12 inches of drive (following the first 6 inches of “seating” drive), or fraction thereof where resistance was encountered, is presented in the logs of borings. The blow counts presented in the logs are uncorrected and shown as they were recorded in the field. Both the samples and drill cuttings were visually classified in the field based on the Unified Soil Classification System (USCS) in general accordance with ASTM D2488.

The standardized N60 value is also presented and is calculated based on field blow counts and coefficients for hammer energy correction to normalize the automatic hammer blow count to the energy of the original SPT rope and cathead hammer (approximately 60%), borehole diameter to normalize the blow count for the diameter of the borehole, sampler type to account for the type of sampler and the presence of liners, and rod length to normalize the blow count to a standard length of 33 feet.

Subsurface conditions encountered are summarized in Section 3.3. Logs of the borings were prepared based on the field logging, visual examination of the soil samples, and the…