motems inspection repairs - humboldt bay harbor district...

Chevron Eureka Terminal

MOTEMS Inspection Repairs Date: May 15, 2014 Project Manager: Zach Pecor, Chevron Terminal Manager: Scott Parsons, Chevron Contractor: West Coast Contractors, CSLB #511500 A,B Agent: Corey Matson, Pacific Affiliates Introduction

In September 2013, above and below water inspections were performed to assess the condition of the timber trestle and wharf at the Chevron Eureka Terminal. Inspections were performed in accordance with California Code of Regulations Title 24 Part 2 Chapter 31F Marine Oil Terminals, the Marine Oil Terminal Engineering and Maintenance Standards (MOTEMS) Audit Manual, and the ASCE Underwater Investigation Standard Practice Manual. Damage to individual elements of the structure was rated from minor to severe. The findings of the inspections were summarized in Above Water and Underwater Structural Inspection Reports prepared by Moffatt & Nichol (M&N). Based on the inspection results, Chevron is seeking permits to perform necessary repairs to the dock. Permits

An interagency meeting, hosted by the Army Corps, was held on March 12, 2014 to present the project to all interested agencies and gather preliminary comments to assist in preparing the permit applications. Chevron is seeking permission from the following local, state and federal agencies to complete structural repairs to their timber trestle and wharf:

City of Eureka

Humboldt Bay Harbor, Recreation and Conservation District

California Coastal Commission

North Coast Regional Water Quality Control Board

U.S. Army Corps of Engineers

A term of five years is being requested which will allow Chevron to make repairs to the dock through 2018, addressing the most critical areas first. The goal of the project is to repair all damaged areas of the dock by the expiration of the permits so no further repairs are necessary for five or ten years. Project Location

The Chevron Eureka Terminal is located in the City of Eureka on the northern California coast in Humboldt County, approximately 270 miles north of San Francisco. From Highway 101/Broadway in Eureka, turn west on the unnamed road at the entrance to the Bayshore Mall (at the stop light

between McDonald's and the Bayshore Mall), then continue west to the security gate at the Chevron Terminal, 3400 Christie Street (APN 007‐071‐08). The terminal’s trestle and wharf (APN 007‐071‐13) extend 645 feet from shore into Humboldt Bay, which is where the proposed construction will take place. See Sheet C‐1 of the attached plans for location and vicinity maps. Facility Description

The Chevron Eureka Terminal consists of a timber dock situated on the tidelands of Humboldt Bay and the bulk fuel storage facility on the adjacent upland parcel. The dock is ‘T’ shaped with an approximately 600 ft long trestle, approximately 150 ft long wharfhead, and five mooring/breasting dolphins connected by timber catwalks, as shown on Sheet C‐2. Believed to have been originally constructed in the early 1900’s, the facility has been expanded, upgraded, and repaired numerous times since. The Eureka Terminal services fuel barge traffic only, with barges typically arriving once every 10‐12 days to deliver fuel to the landside bulk storage terminal. Barges provide hoses and pumps; therefore the terminal does not have any equipment, rack, towers, or loading arms on the wharf. Approximately 80% of the fuel used by the greater Eureka area is delivered via barge to the Chevron Terminal. The 594 foot long trestle extends from the shoreline and consists of an approximately ten foot wide roadway and nine foot pipeway supporting five pipelines of diameters varying between six and ten inches. The wharfhead at the end of the trestle is approximately 152 feet long by 22 feet to 36 feet wide and supports a containment area and the operators shack. Catwalks connect the wharf to three dolphins to the south and two to the north. Construction of the trestle and wharf are typical of a timber structure. Wood piles driven in rows are connected with a 12”x12” timber cap. Stringers span between pile caps and are covered with 4”x12” decking. Piles are primarily creosote treated, but a number of pressure treated piles have been installed over the years during repairs. A more detailed description of the terminal construction can be found in the structural inspection reports by M&N3,4. These reports are available upon request. Project Description

In order to maintain operations at the terminal into the future, repairs to the structure must be made. The docks sole use is the transfer of fuel from the barge to the storage facility, so it is imperative that the dock structure be maintained considering the potential environmental consequences of a failure of the structure. According to the M&N reports, minor and moderate damage noted in the field survey is considered allowable and should be closely monitored in future inspections. Those elements of the structure that were characterized as having major or severe damage will be replaced. In total, eight piles with major damage and 16 piles with severe damage were discovered (23 total, one pile has major damage above water and severe damage below water, so it was counted twice). These damaged creosote treated piles are proposed to be replaced with new coated timber piles during the initial effort scheduled for 2014. Hardware, bracing, decking and other above water elements of the dock will be replaced as necessary as

well. Sheet C‐2 of the plans shows a plan view of the dock and calls out the areas of the dock with major and severe damage. In addition to replacing piles, there are other elements of the dock identified as needing replacement. These items are noted on Sheet C‐2 as well and include corrosion of metal handrails and walkway grating, timber fender lagging, bracing, beams and blocking and delaminating of a containment membrane along the west side of the dock. It should be noted that there will be no expansion of the existing structure, only in‐kind replacement of existing elements of the dock. The California State Lands Commission has recently required inspections of the dock structure to be performed annually. Specifically, those areas of the structure having been identified as having minor or moderate damage will be re‐inspected annually. Should conditions worsen, or if other damage is discovered that warrants repair, Chevron may elect to repair the structure during the annual work window established as part of this project. Based on the results of the inspection, Chevron will provide all permitting agencies a written update annually, including any plans to make repairs to the dock. In order to have the flexibility to make repairs that are not specifically identified during permitting, Chevron is seeking five‐year permits to perform maintenance to the structure. When portions of the dock are deconstructed during construction, Chevron may elect to replace additional elements of the dock depending on their condition. A maximum of 150 piles will be replaced over the lifetime of the permits and up to 40 piles during any single year. Bracing, decking and hardware will be replaced as deemed necessary during inspection or as a result of construction. Inspection Findings

A total of 472 piles support the trestle, wharf, dolphins and catwalks. For the above water inspection, 35 (7%) were not inspected, 321 (68%) had no reportable damage, 84 (18%) had minor damage, 16 (3%) had moderate damage, 7 (1%) had major damage, and 9 (2%) had severe damage. The superstructure framing, equipment, and hardware were also examined, with isolated damage being reported. Typical damage consisted of degraded bracing and rusted grating and connections. Superstructure framing typically did not have reportable damage, though there are a few areas noted as having rotten or sagging members. For the underwater inspection, 42 piles (9%) were not inspected (inspected to mudline as part of above water inspection), 393 (83%) had no reportable damage, 16 (3%) had minor damage, 7 (1%) had moderate damage, 1 (0%) had major damage, and 13 (3%) had severe damage. Bracing below +3 ft mean lower low water (MLLW) was examined as part of this effort, and with one exception was found to have no reportable damage. Tables 1 and 2 below were taken from the M&N reports and summarize significant deficiencies noted during inspection. Pile labels and photos reference the notation contained in the M&N reports.

Table 1 ‐ Summary of significant deficiencies (major and severe damage) from above water inspection

Table 2 ‐ Summary of significant deficiencies (major and severe damage) from underwater inspection

According to the M&N reports, minor and moderate damage noted in the field survey is considered allowable and should be closely monitored during future inspections. Sheet C‐2 of the project plans provides a plan view of the dock and identifies areas of major and severe damage as

reported by M&N that are scheduled to be repaired. The M&N reports are available upon request and contain a more complete discussion of the inspections and findings. Construction

Construction materials will be staged at Schneider Dock, located on the eastern side of Humboldt Bay 1.4 miles north of the Chevron Dock, or Fairhaven Terminal, located on the western side of Humboldt Bay 0.7 miles north of Chevron. The staging area used will be contingent on ship traffic at the time of construction. New piles will be delivered to the staging area and stored as described in the section below, Storage of Materials. All work will be performed from the Moondoor II barge, which measures 78 feet wide by 114 feet long and will be maneuvered by the Joseph George tugboat. The barge will be used to transport waste material and new timbers between the Chevron Dock and the staging area. During construction, the barge will be positioned adjacent to the dock and tied to the mooring dolphins. A Kobelco CK1000-III Crawler Crane with a 120 foot boom positioned on the barge will be used to remove and install elements of the dock. The crane will be able to reach across the dock to access the back side of the wharf. See the attached Work Plan provided by WCC for a description of the planned construction sequencing. Also attached are the specifications for equipment to be used during construction. There are a few piles, bracing and beams in toward the shoreline in the tidal zone that require replacement. This work will take place during high tides to allow the barge to float over any eel grass that may be in the area. A tide of at least five feet above MLLW is required to ensure there is enough water to clear the five foot loaded draft depth of the barge. Work in shallow depths will only take place when tides permit the barge to float, thus avoiding any impacts to marine plants or animals. Where piles are to be replaced, the dock will be deconstructed as necessary to access the pile(s). The bull rail, decking and equipment attached thereto will be removed and set aside on the dock to expose the stringers and pile cap, which will also be removed and set aside. The crane fitted with a vibratory hammer will attach to the pile to be removed and subsequently vibrate and pull the pile out of the ground. In the event a pile is not able to be removed in its entirety, it will be cut off one foot below the existing mudline. It is not anticipated that piles will be unable to be removed, so once removed, the pile will be placed on the barge in the containment area as described in the attached Chevron Dock Repair Information document provided by WCC. The new pile will then be hoisted and placed as close to the original pile location as possible. An impact hammer will be used to drive the pile to depth. Once the pile is in place, the pile cap, stringers and decking will be replaced. Any elements of the dock that are damaged during construction will be replaced in kind. All damaged elements of the dock removed during construction will be stored in the containment area on the barge until they are transported to the staging area where they will be offloaded and stored for future disposal. Waste Management will be commissioned to transport all waste from the staging area to their landfill in Anderson, CA.

Storage of Materials

Schneider Dock will be used as the primary staging area for construction materials during the project. In the event that Schneider Dock is occupied by a ship during construction, materials will be staged at the Fairhaven Terminal. New timber members will be stored on an asphalt paved area cleaned of dirt and debris and protected by a layer of 10 mil (minimum) plastic. Absorbent booms will be laid around the perimeter of the storage area, underneath the plastic to create a pool effect. Lumber or small timbers will be placed beneath the piles to minimize the risk of tearing the plastic liner during handling. In the event of rain, the storage area will be covered with 6 mil (minimum) plastic sheeting. The sheeting will be run over the absorbent booms and held in place with sandbags. See detail on Sheet C‐3 of the plans. Materials stored on the barge will be handled in a similar fashion as described above. WCC will create a continuous plastic lined berm in the area shown on the attached barge layout sheet. The berm will be made of timbers laid out in a rectangular pattern on the deck of the barge. Plastic sheeting will line the area and overlap the timbers to create a pool effect. The pool will be monitored daily for liquids and cleaned as deemed necessary to avoid any leakage onto the barge deck or into the waters of Humboldt Bay. If necessary, the materials will be covered with plastic held in place with sandbags during weather. All materials removed from the dock and debris generated during the project will be held in the containment area on the barge until transferred to the land side storage area where they will be placed in roll‐off containers provided by Waste Management. When the containers are full, they will be transported to Waste Management’s landfill in Anderson, CA. The containers are water tight, so no leakage will occur and covers will be provided during rain events to prevent water from entering the container. Absorbent pads or booms will be placed in each container to soak up any free water that accumulates. New Timbers

All new timbers installed (piles, beams, bracing, etc.) will be pressure treated Douglas fir and will be in‐kind replacements of the existing elements. The pressure treatment will be Ammoniacal Copper Zinc Arsenate (ACZA), commonly known as Chemonite. The minimum retention of the treatment shall be 1.5 pounds per cubic foot (pcf) with a minimum penetration of 0.5 inches. Treatment of the wood shall be in accordance with the Best Management Practice guide published, in part, by the Western Wood Preservers Institute (WWPI)5. Piles will be 16 inches in diameter at the butt and 60 to 70 feet in length, with approximately 20 feet driven into the ground. Those portions of the new piles that will be in direct contact with bay water will be sealed with Specguard’s Marine Grade Polyurea coating (E‐375‐08). E‐375‐08 is a slow cure Polytetramethylene ether glycol (PTMEG) based Polyurea system suitable for continuous emersion in marine environments. This system has been used successfully on a number of projects along the California coastline involving treated wood piles. The coating cures to a smooth, continuous finish encapsulating the wood preservative to prevent chemicals from leaching into the environment.

The piling supplier will apply a 250 mil thick, black Polyurea coating over the treated wood piles and allow it to cure before shipping to the site. The minimum coating area on the piles will extend from the top of the pile to five feet below the mudline. Attached are the MSDS and product information for the Polyurea coating. Environmental Considerations

Eelgrass Humboldt Bay contains a number of Environmentally Sensitive Habitat Areas (ESHA), including the eelgrass beds located near the shoreline along the terminal. Impacts to eelgrass will be mitigated by using vibratory equipment to remove piles and an impact hammer during pile installation to minimize turbidity. Below water work will also be coordinated with low tides to avoid the eelgrass. When work is required in the shallow intertidal waters, the work will take place during high tides to allow the barge to float above the eelgrass. Based on visual observations, eelgrass appears to extend out approximately 375 feet from the shoreline, near the abandoned piling from the old dock. Sheet C‐2 shows the approximate boundary of the eelgrass in relation to the dock. Fish Chinook (Oncorhynchus tshawytscha) and coho (Oncorhynchus kisutch) salmon and steelhead trout (Oncorhynchus mykiss), all of which are federally listed as threatened, travel through Humboldt Bay as juveniles when out‐migrating to the ocean and as adults when migrating back to their natal streams for spawning. Longfin smelt (Spirinchus Thaleichthys), which is also a listed species, have a sustained population within Humboldt Bay and migrate up streams tributary to the bay to spawn. Seasonal implementation of underwater construction activities is proposed in an effort to minimize disturbances to migrating fish. A work window from August 1st to October 31st of each year is proposed for underwater work. Acoustics A vibratory hammer will be used to remove the existing piles, however since the piles are being pulled and not driven, resulting sound levels should not be of concern. A diesel impact hammer will be used to drive the new timber piles to depth. It is estimated that at a hammer energy of 30,000 ft‐lb, the piles will require a maximum of six blows per foot and approximately 50 blows per pile. With four piles being placed per day, the total number of blows per day will be approximately 200. Water depths will range from a few feet in the tidal zone to approximately 30 feet adjacent to the face of the dock. Attached are the specifications for the hammers to be used. According to a Memorandum from National Marine Fisheries Service (NMFS) on Sound Propagation Modeling for Marine Mammals1, current underwater sound threshold levels for marine mammals are: Disturbance: 160 dBRMS re 1 μPa for impulse sound (impacts pile driving) 120 dBRMS re 1 μPa for continuous sound (vibratory pile driving) Injury: 180 dBRMS re 1 μPa for cetaceans 190 dBRMS re 1 μPa for pinnipeds

Frequency ranges for cetaceans and pinnipeds are as follows: Low‐frequency cetaceans (humpback, gray and minke whales): 7Hz to 20kHz Mid‐frequency cetaceans (killer whales): 150Hz to 20kHz High‐frequency cetaceans (harbor and Dall’s porpoises): 200Hz to 20kHz Pinnipeds (Steller and California sea lions and harbor and elephant seals): 75Hz to 20kHz The Fisheries Hydroacoustic Working Group (FHWG) established sound threshold of 183 dB for potential impact to fish <2 grams and 187 dB for fish >2 grams2. Impact driving wood piles does not typically generate sound levels that cause injury to mammals and fish. The piles will also have the 250 mil polyurea coating which may dampen the sound generated. Spill Prevention Chevron and West Coast Contractors each have existing Spill Prevention, Control and Countermeasure (SPCC) plans that will be altered, if necessary, specifically for this project. Spill kits with contents appropriate for the types of hazardous materials present will be maintained on the barge and the dock. Kits shall be equipped with enough material to provide preliminary containment for a volume of material that can reasonably be expected to spill. Booms will be available to contain any materials spilled in the water.

References 1. Guidance Document: Sound Propagation Modeling to Characterize Pile Driving Sounds Relevant

to Marine Mammal. National Marine Fisheries Service Northwest Region and Northwest Fisheries Science Center, January 31, 2012

2. Concurrence and General Instruction on Use of the Underwater Noise Monitoring Template. Fisheries Hydroacoustic Working Group, August 28, 2013

3. Chevron Eureka Terminal, September 2013 MOTEMS Inspection, Section 3102F, Above Water Structural Inspection Report. Moffat & Nichol, December 6, 2013

4. Chevron Eureka Terminal, September 2013 MOTEMS Inspection, Section 3102F, Underwater Structural Inspection Report. Moffat & Nichol, December 6, 2013

5. Best Management Practices, For the use of treated wood in aquatic and wetland environments. Western Wood Preservers Institute, Wood Preservation Canada, Southern Pressure Treaters’ Association, Souther Forest Products Association, November 1, 2011

Attachments

Chevron Eureka Dock and Piling Repairs, Work Plan by WCC Chevron Dock Repair Information by WCC Estimated construction schedule for 2014 by WCC Chevron U.S.A. Inc., Eureka Marine Terminal, MOTEMS Inspection Repair Plans, Sheets C‐1 to C‐4 Equipment specifications:

I.C.E. Diesel Impact Hammer Ape Model 150 Vibratory Driver Extractor APE Model 24 Concrete Clamp Moondoor II Barge layout and Survey by Zerlang & Zerlang Marine Services Kolbelco CK1000‐III Hydraulic Crawler Crane Specifications Joseph George Tugboat Survey by Marine Safety Consultants, Inc.

Specguard’s Polyurea (E‐375‐08) specifications and MSDS ACZA pressure treatment MSDS

Chevron Eureka Dock and Piling Repairs.

Work Plan.

Load barge with crane and equipment at Murphy Dock. Move barge into place at

Chevron Dock.

Work will start at Dolphin 8 with the removal and replacement of 3 piles total.

Decking will be removed as needed to access Dolphins. Existing Dolphin cable wrap

will be removed and the 3 damaged piles will be pulled using the vibratory hammer

with the timber clamp. Damaged piles will be staged on the barge in the

containment area. New pile will be driven with diesel impact hammer to replace the

damaged piling. New Dolphin cable wrap will be installed on Dolphins. Decking will

be re installed in areas where it was removed. Loose or missing edge beams and

fender lagging will be repaired or replaced as needed.

Barge will be moved to Dolphin 3 for removal and replacement of 4 piles total.

Decking will be removed as needed to access Dolphins. Existing Dolphin cable wrap

will be removed and the 4 damaged piles will be pulled using the vibratory hammer

with the timber clamp. Damaged piles will be staged on the barge in the

containment area. New pile will be driven with diesel impact hammer to replace the

damaged piling. New Dolphin cable wrap will be installed on Dolphins. Decking will

be re installed in areas where it was removed. Loose or missing edge beams and

fender lagging will be repaired or replaced as needed.

Barge will move to the center section of the dock for removal and replacement of

piling at bents 113,114,116,118,119,121,124 and 127for a total of 10 piles. Decking

will be removed as needed to access the bents and piling. The damaged piles will be

pulled using the vibratory hammer with the timber clamp. Damaged piles will be

staged on the barge in the containment area. New pile will be driven with diesel

impact hammer to replace the damaged piling. Caps will be replaced as needed.

Decking will be re installed in areas where it was removed. Wales and Fenders will

be removed and replaced as noted on the plans.

Work on the trestle portion of the dock will be tide work. The barge will be moved

in on the incoming tide and will be moved out on the outgoing tide. Barge will be

floating, not grounded while work is performed on the trestle to avoid grounding of

barge in tidal areas.

Barge will be moved to the trestle to start work on bent 4, 10, 32, 33 and 34. .

Decking will be removed as needed to access the bents and piling. The 6 damaged

piles will be pulled using the vibratory hammer with the timber clamp. Damaged

piles will be staged on the barge in the containment area. 6 new piles will be driven

with diesel impact hammer to replace the damaged piling. Caps will be replaced as

needed. Decking will be re installed in areas where it was removed. Bracing and

bolts will be replaced as noted on the plans.

Handrails and grating will be replaced as noted on the in the North and South

walkways.

lft:CC West Coast Contractors

61 050 Highway 101

Coos Bay, Oregon 97420

p. 541 .267.7689

f. 541 .269.1600

westcoastcontractors.com

OR Contractors Board #63710

CA Contractors License 511500 Class A, B

WA Contractors License WestCCI99207

Building Strong Foundations for a Better Future

Chevron Dock Repair Information

• Pile Driving Calculations- 6 blows per foot at hammer energy of

30,000ft-lb yields 92kips per pile .

• Blows/Pile- 50

• Piles/Day 4, Blows/Day -200

• Crane Specifications-Size, boom length, reach (for pulling or

installing a pile)

o Kobelco CK1000-III Crawler Crane-See attached brochure and

loa·d chart for 120' boom length.

• Ape 150 Vibratory Pile Extractor-See attached brochure.

• Barge Details-Dimensions, draft depth;

o See attached survey.

o Barge Dimensions = 78' wide x 114' long x 8' -7" depth.

o Barge Draft Loaded = 5'

o Barge Draft Unloaded= 4'

• Details of Containment on Barge

o The containment on the barge will consist of building a

continuous plastic lined berm in an area on the barge as

designated on the barge layout sheet. The berm will be made

of wooden timbers layed out in a rectangular pattern on the

deck of the barge with plastic lining the barge deck and

overlapping the timbers to create a "pool" effect. The "pool"

will be monitored daily for liquids and cleaned as deemed

necessary to avoid any leakage onto the barge deck or into

the waters of Humboldt Bay.

• Tug Boat Joseph George-See attached Survey

ID Task Name Duration Start Finish Predecessors Resource Names

1 Mobilization 9 days Wed 8/20/14 Mon 9/1/14

2 Dolphin 8, 3 piles 5 days Tue 9/2/14 Mon 9/8/14 1

3 Dolphin 3, 4 piles 6.5 days Tue 9/9/14 Wed 9/17/14 2

4 Wharf Pile Replacement 16 days Wed 9/17/14 Thu 10/9/14

5 Bnt 113, 1 pile 1.6 days Wed 9/17/14 Fri 9/19/14 3

6 Bnt 114, 1 pile 1.6 days Fri 9/19/14 Mon 9/22/14 5

7 Bnt 116, 1 pile 1.6 days Mon 9/22/14 Wed 9/24/14 6

8 Bnt 118, 2 pile 3.2 days Wed 9/24/14 Mon 9/29/14 7

9 Bnt 119, 1 pile 1.6 days Mon 9/29/14 Wed 10/1/14 8

10 Bnt 121, 1 pile 1.6 days Wed 10/1/14 Thu 10/2/14 9

11 Bnt 124, 2 pile 3.2 days Thu 10/2/14 Tue 10/7/14 10

12 Bnt 127, 1 pile 1.6 days Tue 10/7/14 Thu 10/9/14 11

13 Trestle Pile Replacement 9.6 days Thu 10/9/14 Thu 10/23/14

14 Bnt 4, 2 piles 3.2 days Thu 10/9/14 Tue 10/14/14 12


16 Bnt 32, 1 pile 1.6 days Thu 10/16/14 Fri 10/17/14 15

17 Bnt 33, 1 pile 1.6 days Fri 10/17/14 Tue 10/21/14 16


19 Brace Repairs 9 ea 3 days Thu 10/23/14 Tue 10/28/14 18

20 Fender lagging Bnt 113 - 117 1.5 days Tue 10/28/14 Wed 10/29/1419

21 Wale Replacement Bnt 124 1 day Wed 10/29/14Thu 10/30/14 20

22 Edge Beam Repair Bnt 125 - 126 1 day Thu 10/30/14 Fri 10/31/14 21

8/10 8/17 8/24 8/31 9/7 9/14 9/21 9/28 10/5 10/12 10/19 10/26 11/2

September October November

Task

Split

Milestone

Summary

Project Summary

External Tasks

External Milestone

Inactive Task

Inactive Milestone

Inactive Summary

Manual Task

Duration-only

Manual Summary Rollup

Manual Summary

Start-only

Finish-only

Deadline

Progress

Page 1

Project: Chevron Dock Repair Sch

Date: Wed 5/7/14

CHEVRONBULK FUELSTORAGEFACILITY

HUMBOLDT BAY

FLOOD

EBB

CH

RIS

TIE

ST

RE

ET

TRUESDALE

P A

C I

F I

C A

F F

I L

I A

T E

SC

O

N

S

U

L

T

I

N

G

E

N

G

I

N

E

E

R

S

9 9

0 W

. W

A T

E R

F R

O N

T D

R I

V E

, E

U R

E K

A ,

C A

9 5

5 0

1T

E L

( 7

0 7

) 4

4 5

- 3

0 0

1

F

A X

( 7

0 7

) 4

4 5

- 3

0 0

3

TIT

LE

SH

EE

T

14-1669

C-1

CH

EV

RO

N E

UR

EK

A T

ER

MIN

AL

MO

TE

MS

IN

SP

EC

TIO

N &

RE

PA

IRS

3400

CH

RIS

TIE

ST

RE

ET

EU

RE

KA

, C

AL

IFO

RN

IA 9

5501

AP

No.

007

-071

-013

CALIFORNIA

HUMBOLDT COUNTY

EUREKA

CHEVRON U.S.A. INC.

EUREKA MARINE TERMINAL

MOTEMS INSPECTION REPAIRS

PROJECT

LOCATION

SHEET INDEX

C-1 TITLE SHEET

C-2 DOCK PLAN

C-3 REPAIR DETAILS

C-4 DOCK PHOTOS

ABBREVIATIONS

PROJECT INFORMATION

OWNER: CHEVRON U.S.A. INC.3400 CHRISTIE STREETEUREKA, CALIFORNIA 95501

ENGINEER: PACIFIC AFFILIATES, CONSULTING ENGINEERS990 W. WATERFRONT DRIVEEUREKA, CALIFORNIA 95501

CONTRACTOR: WEST COAST CONTRACTORS, CSLB #511500 A,B61050 HIGHWAY 101COOS BAY, OREGON 97420

PROJECT ADDRESS: 3400 CHRISTIE STREET, EUREKA, CA 95501AP Nos.: 007-071-08 & 007-071-13SEISMIC DESIGN CATEGORY: EWIND EXPOSURE: D

THERE ARE NO KNOWN HISTORICAL BUILDINGS LOCATED ON SITE.

HAZARDOUS AREAS INCLUDE HUMBOLDT BAY .

IN SEPTEMBER 2013, ABOVE AND BELOW WATER INSPECTIONSWERE PERFORMED TO ASSESS THE CONDITION OF THE TIMBERTRESTLE AND WHARF AT THE CHEVRON EUREKA TERMINAL.INSPECTIONS WERE PERFORMED IN ACCORDANCE WITHCALIFORNIA CODE OF REGULATIONS TITLE 24 PART 2 CHAPTER31F MARINE OIL TERMINALS, THE MARINE OIL TERMINALENGINEERING AND MAINTENANCE STANDARDS (MOTEMS) AUDITMANUAL, AND THE ASCE UNDERWATER INVESTIGATIONSTANDARD PRACTICE MANUAL. DAMAGE TO INDIVIDUALELEMENTS OF THE STRUCTURE WAS RATED FROM MINOR TOSEVERE. CHEVRON IS PROPOSING TO MAKE REPAIRS TO AREASOF THE DOCK IDENTIFIED AS HAVING MAJOR OR SEVEREDAMAGE DURING THE INITIAL CONSTRUCTION WINDOW. ANNUALINSPECTIONS WILL BE MADE OF THE STRUCTURE WHERE AREASREQUIRING REPAIR WILL BE IDENTIFIED. UPDATED PLANS WILL BEPREPARED SHOWING PROPOSED CONSTRUCTION UPONCOMPLETION OF ANNUAL INSPECTION.

PROJECT DESCRIPTION

SHEET DESCRIPTION

<N> NEW<E> EXISTINGHDG HOT DIPPED GALVANIZEDPT PRESSURE TREATED

GENERAL NOTES:

1. THIS PROJECT SHALL COMPLY WITH THE 2013 CALIFORNIA BUILDING CODE AND LOCALORDINANCES.

2. CONTRACTOR SHALL PERFORM ALL WORK IN COMPLIANCE WITH ALL APPLICABLEOCCUPATIONAL SAFETY AND HEALTH STANDARDS, RULES, REGULATIONS, AND ORDERSESTABLISHED BY THE STATE OF CALIFORNIA AND OTHER APPLICABLE AGENCIES.

3. THE DRAWINGS SHALL NOT BE SCALED. ALL WORK SHALL BE GOVERNED BY THE DIMENSIONSSHOWN ON THE DRAWINGS. DISCREPANCIES SHALL BE BROUGHT TO THE ATTENTION OF THEENGINEER PRIOR TO PROCEEDING WITH THE WORK.

4. UNAUTHORIZED CHANGES AND USES: THE ENGINEER PREPARING THESE PLANS WILL NOT BERESPONSIBLE FOR, OR LIABLE FOR, UNAUTHORIZED CHANGES TO OR USES OF THESE PLANS.ALL CHANGES TO THE PLANS MUST BE IN WRITING AND MUST BE APPROVED BY THE PREPAREROF THESE PLANS.

5. THE PROJECT SITE IS NOT LOCATED WITHIN AN AREA WHERE KNOWN CULTURAL RESOURCESHAVE BEEN LOCATED. HOWEVER, AS THERE EXISTS THE POSSIBILITY THAT UNDISCOVEREDCULTURAL RESOURCES MAY BE ENCOUNTERED DURING CONSTRUCTION ACTIVITIES, THEFOLLOWINGS MITIGATION MEASURES ARE REQUIRED UNDER STATE AND FEDERAL LAW:

IF CULTURAL RESOURCES ARE ENCOUNTERED, ALL WORK MUST CEASE AND A QUALIFIEDCULTURAL RESOURCES SPECIALIST CONTACTED TO ANALYZE THE SIGNIFICANCE OF THE FINDAND FORMULATE FURTHER MITIGATION (E.G. PROJECT RELOCATION, EXCAVATION PLAN,PROTECTIVE COVER).

PURSUANT TO CALIFORNIA HEALTH AND SAFETY CODE SECTION 7050.5, IF HUMAN REMAINSARE ENCOUNTERED, ALL WORK MUST CEASE AND THE COUNTY CORONER CONTACTED.

THE APPLICANT AND SUCCESSORS IN INTEREST ARE ULTIMATELY RESPONSIBLE FOR ENSURINGCOMPLIANCE WITH THIS CONDITION.

SITE PLAN

SCALE: 1"=100'

P

R

E

L

I

M

I

N

A

R

Y

PILE

BRACING

PILEBRACINGPILE

PILE CAP

BRACING

BRACINGPILE

PILEPILE

PILE

BEAM

HAND RAILINGCORROSION

4 PILES

BLOCKING

GRATING

GRATINGBLOCKING

PILE

PILE & WALE

PILE

PILE MISSING

PILESTEEL SHELL

HAND RAILINGCORROSION

4 PILES

BRACING

FENDERLAGGING

CONTAINMENTMEMBRANE

PILE MISSING

DOLPHIN 1

DOLPHIN 2

DOLPHIN 3

DOLPHIN 8

DOLPHIN 9

TRESTLE

WH

AR

F

APPROXIMATE GRADEBREAK AND EXTENT

OF EELGRASS

BULK FUELSTORAGEFACILITY

HUMBOLDT BAY

FLO

OD

EBB

1. PILE LOCATIONS AND DOCK EXTENTS SHOWN ARE APPROXIMATE.

2. THE MEMBERS NOTED ON THIS PLAN WERE DESIGNATED AS HAVING MAJOR ORSEVERE DAMAGE IN THE M&N INSPECTION AND ARE TARGETED TO BE REPLACEDDURING THE INITIAL CONSTRUCTION EFFORT. FIGURES 1-4 OF THE M&NINSPECTION DOCUMENTS PROVIDE GREATER DETAIL ON THE RESULTS OF THEINSPECTION.

3. SOUNDINGS IN MOORING AREA REFLECT CONDITIONS SURVEYED BY PACIFICAFFILIATES CONSULTING ENGINEERS ON SEPTEMBER 27 & 28, 2012. DEPTHSHOWN IS DISTANCE TO MUDLINE TO NEAREST FOOT AND TENTHS OF A FOOTBELOW MEAN LOWER LOW WATER (MLLW).

4. SOUNDINGS ALONG THE TRESTLE WERE MEASURED BY CHEVRON ON APRIL 1,2014 AND ARE APPROXIMATE.

5. LOAD LIMIT ON TRESTLE AND MAIN PIER IS A 9 TON TRUCK.

P A

C I

F I

C A

F F

I L

I A

T E

SC

O

N

S

U

L

T

I

N

G

E

N

G

I

N

E

E

R

S

9 9

0 W

. W

A T

E R

F R

O N

T D

R I

V E

, E

U R

E K

A ,

C A

9 5

5 0

1T

E L

( 7

0 7

) 4

4 5

- 3

0 0

1

F

A X

( 7

0 7

) 4

4 5

- 3

0 0

3

CH

EV

RO

N D

OC

K P

LA

N

14-1669

C-2

CH

EV

RO

N E

UR

EK

A T

ER

MIN

AL

MO

TE

MS

IN

SP

EC

TIO

N &

RE

PA

IRS

3400

CH

RIS

TIE

ST

RE

ET

EU

RE

KA

, C

AL

IFO

RN

IA 9

5501

AP

No.

007

-071

-013

DOCK EXTENTS AND PILE PLAN

NOTES:

P

R

E

L

I

M

I

N

A

R

Y

MATERIAL STORAGE CONTAINMENT

<E> 8"x8" BULLRAIL

<E> 4"x DECKING<E> 6"x6" BULLRAIL

<E> 4"x12" STRINGERS@ 24" O.C.

<E> 12"x12" PILE CAP<E> (2)-14"Ø

FENDER PILE

(2) <E> 14"ØBATTER PILE

<E> 14"Ø PILE

<E> 8"x12" LAGGING

<E> 18"ØRUBBER FENDER

<E> 8"x12" BEAMS

REPLACE <E> 8"x12" LAGGING W/<N> PT 8"x12" DF LAGGING,

INSTALL (2) <N> HDG CARRIAGEBOLTS W/ WASHERS & NUT

THROUGH FENDER PILE

<E> 14"Ø PILE

<E> 14"Ø PILE

(2) <E> 14"ØBATTER PILE

PILE REPLACEMENTDECKING, RAILING, STRINGERS AND PILECAP WILL BE REMOVED. PILE WILL BEPULLED USING VIBRATORY HAMMER. <N>PILE TO BE INSTALLED AT LOCATION OFREMOVED PILE AND DRIVEN TO DEPTH.<N> HDG DRIFT PIN TO BE INSTALLED

<E> DRIFT PIN, TYP.

A-A TYPICAL WHARF SECTION

<E> 4"x DECKING<E> 12"x12"GIRDERS

<E> 12"x12" PILE CAP

<E> 12"x16"BLOCKING

<E> 6"x6" BULLRAIL

<E> 14"Ø PILE<E> 14"Ø PILE

<E> 4"X BRACING

<E> 6" FIRE WATER LINE<E> 6"

FUEL LINE

<E> 8" FUEL LINE

<E> 6" FUEL LINE

REPLACE <E> 4"x BRACING W/<N> PT 4"x BRACING, INSTALL<N> HDG BOLTS W/ WASHERS& NUT THROUGH PILE

B-B TYPICAL TRESTLE SECTION

PILESMATERIAL: DOUGLAS-FIRSIZE:

BUTT DIAMETER 16-18 INCHLENGTH 60 FEET (WATER DEPTHS OF 20 FEET OR LESS)

70 FEET (WATER DEPTHS GREATER THAN 20 FEET)TAPER 1 INCH PER 10 FEET MAXIMUM

PRESSURE TREATMENT: AMMONIACAL COPPER ZINC ARSENATE (ACZA)RETENTION 1.5 LB/CFPENETRATION 0.5 INCH

COATING: SPECGUARD MARINE GRADE POLYUREA COATING (E-375-08)COVERAGE 18 INCHES BELOW MUDLINE TO TWO FEET ABOVE HIGH WATERTHICKNESS 250 MIL AVERAGE, ±20% TOLERANCECOLOR BLACK

HARDWAREMATERIAL: MILD STEEL, TYPE 304 OR 316 STAINLESS STEELSIZE: MATCH EXISTINGCOATING: HOT DIPPED GALVANIZED PER ASTM A-153 (NOT REQUIRED FOR STAINLESS)

NOTE: VALUES SHOWN ARE MINIMUMS

MATERIALS

1. UNDERWATER WORK SHALL BE PERFORMED BETWEEN AUGUST 1 AND OCTOBER 31 OF EACH YEARCOVERED IN THE PROJECT PERMITS.

2. AN EFFORT SHALL BE MADE TO REMOVE AND INSTALL PILES DURING LOW TIDES. PILES TO BEREPLACED IN SHALLOW INTERTIDAL AREAS SHALL BE WORKED ON DURING HIGH TIDES TO ALLOWBARGE TO FLOAT ABOVE GROUND LEVEL.

3. PRESSURE TREATED MEMBERS SHALL BE STORED IN A CONTAINED AREA WHILE STORED ON SHOREAND WHILE ON THE BARGE. A COVERING SHALL BE PROVIDED DURING PRECIPITATION.

CONDITIONS

P A

C I

F I

C A

F F

I L

I A

T E

SC

O

N

S

U

L

T

I

N

G

E

N

G

I

N

E

E

R

S

9 9

0 W

. W

A T

E R

F R

O N

T D

R I

V E

, E

U R

E K

A ,

C A

9 5

5 0

1T

E L

( 7

0 7

) 4

4 5

- 3

0 0

1

F

A X

( 7

0 7

) 4

4 5

- 3

0 0

3

DE

TA

ILS

14-1669

C-3

CH

EV

RO

N E

UR

EK

A T

ER

MIN

AL

MO

TE

MS

IN

SP

EC

TIO

N &

RE

PA

IRS

3400

CH

RIS

TIE

ST

RE

ET

EU

RE

KA

, C

AL

IFO

RN

IA 9

5501

AP

No.

007

-071

-013

P

R

E

L

I

M

I

N

A

R

Y

P A

C I

F I

C A

F F

I L

I A

T E

SC

O

N

S

U

L

T

I

N

G

E

N

G

I

N

E

E

R

S

9 9

0 W

. W

A T

E R

F R

O N

T D

R I

V E

, E

U R

E K

A ,

C A

9 5

5 0

1T

E L

( 7

0 7

) 4

4 5

- 3

0 0

1

F

A X

( 7

0 7

) 4

4 5

- 3

0 0

3

DO

CK

PH

OT

OS

14-1669

C-4

CH

EV

RO

N E

UR

EK

A T

ER

MIN

AL

MO

TE

MS

IN

SP

EC

TIO

N &

RE

PA

IRS

3400

CH

RIS

TIE

ST

RE

ET

EU

RE

KA

, C

AL

IFO

RN

IA 9

5501

AP

No.

007

-071

-013

E METAL HANDRAIL AT CATWALK F CATWALK GRATING AT DOLPHIN 1

C BLOCKING AT DOLPHIN 2

NOTE:IMAGES ARE TAKEN FROM CHEVRON EUREKA TERMINAL, SEPTEMBER 2013 MOTEMSINSPECTION SECTION 3102F, ABOVE WATER STRUCTURAL INSPECTION REPORT BYMOFFATT & NICHOL. IMAGES ARE INTENDED TO SHOW TYPICAL DAMAGE OF ELEMENTDESCRIBED IN TITLE THAT IS TO BE REPAIRED.

B SAGGING BEAM AT WHARF

D FENDER LAGGING AT WHARF

A BRACING AT TRESTLE

P

R

E

L

I

M

I

N

A

R

Y

G CONTAINMENT MEMBRANE

motems inspection repairs - humboldt bay harbor district...

Documents