22-09_-_Addendum_4.pdf

(Addn. No. 4, Pg. 1)

ADDENDUM NO. 4

PROJECT TITLE: EMERGENCY RELEASE FACILITY

LOCATION: LAKE PERRIS

SPECIFICATION NO.: 22-09

CONTRACT NO.: C51632

ISSUED BY: STATE OF CALIFORNIA

DEPARTMENT OF WATER RESOURCES

DATE ISSUED: AUGUST 29, 2024

The following changes are hereby made by this addendum:

1. New and revised specification page numbers: 00010-2, 00300-6, 00410-4, 00410-12, 01305- {1-10}, 02305-1, 02455- {1, 3, 10}, 02925- {3, 9, 9a, 11, 11a}, 02936- {11, 16}, 03300- {18, 19, 36}

2. New and revised sections: 00010, 00300, 00410, 01305, 02305, 02455, 02925, 02936, 03300

BIDDER'S SIGNATURE

This addendum shall be signed below in the same manner as the bid is signed.

Bidder: ________________________________________________________

By (Authorized Officer): ___________________________________________

Business Address: _______________________________________________

Dated: ________________________, 2024.

THIS ADDENDUM COMPRISES 29 PAGES.

THIS COVER PAGE MUST BE SIGNED AND RETURNED WITH THE BID.

EXECUTION OF THIS ADDENDUM CONSTITUTES ACKNOWLEDGEMENT

OF THE PREVIOUS ADDENDA.

Table of Contents

00010-2 B-20 (Addn. No. 4, Pg. 2)

BID FORM – Continued

00449 DVBE: Declarations of Meeting and Maintaining Requirement of a DVBE – Equipment Rental

00450 DVBE: Certification of Commercially Useful Function 00451 In-Use Off-Road Diesel Fueled Vehicle List

CONTRACTING REQUIREMENTS

00520 Contract Form 00610 Performance Bond 00620 Payment Bond

GENERAL CONDITIONS

00700 Abbreviations and Definitions 00701 Safety 00702 Interpretation of the Contract 00703 Compliance with Applicable Laws and Regulations 00704 Contractual Relationship of Parties 00705 Prosecution of Work 00706 Control of Work 00707 Changes 00708 Payments and Retentions 00709 Potential Claims and Claims 00800 Supplementary General Conditions

ADDENDA AND INFORMATION LETTERS

00901 Addenda 00902 Information Letters

DIVISION 1 – GENERAL REQUIREMENTS

01110 Summary of Work 01260 Measurement of Materials by Ton 01300 Partnering 01305 Dispute Resolution Board 01310 Project Meeting 01322 Contractor’s Schedule 01330 Submittals 01520 Contractor Furnished Construction Facilities 01521 Department Furnished Facilities 01550 Right of Way, Access Restriction, and Work Site Security 01551 Public Safety and Traffic Controls 01570 Environmental Protection 01580 Signage 01720 Construction Layout (Surveys)

Information Available

00300-6 B-20 (Addn. No. 4, Pg. 3)

3) General Prevailing Wage Determinations Basic Trades (Southern) Index 2024-1.

4) General Prevailing Wage Determinations Shift Differential Pay Index 2024-1.

5) General Prevailing Wage Determinations Subtrades Index 2024-1.

J. Example Submittal:

1) Submittal Example from Perris Dam Dewatering Submittal (14- 03_V144-152.A).

K. Mandatory Site Inspection Trip Files:

1) Mandatory Site Inspection Trip Presentation.

L. Dispute Resolution Board Files:

1) DRB Agreement.

2) DWR CEM6202.

3) DWR CEM6204.

4) DWR CEM6210.

5) DWR CEM 6214.

END OF DOCUMENT

Bid Schedule

*Section where contract item is defined

00410-4 B-20 (Addn. No. 4, Pg. 4)

Item No.

Section* Item Estimated Quantity

Unit Unit Price

(In Figures)

Total (In Figures)

56 02221 Electrical Equipment Demolition

1 JOB LUMP SUM

57 02230 Clearing and Grubbing 1 JOB LUMP SUM

58 02230 Weed Management 24 ACRE

59 02240 Dewatering 1 JOB LUMP SUM

60 02305 General Excavation 342,491 CY

61 02305 Rock Excavation 1,000 CY

62 02305 Compacted Backfill 244,101 CY

63 02305 Common Backfill 400 CY

64 02305 Import Backfill 3,000 CY

65 02305 Habitat Soils 51,590 CY

66 02305 Class 2 Aggregate Base 7,863 CY

67 02305 Crushed Rock 1,708 CY

68 02305 Rock, 2-inch to 3-inch 834 CY

69 02305 Rock Slope Protection (Type 1)

25,000 CY

70 02305 Rock Slope Protection (Type 2)

9,262 CY

71 02305 Drain Rock 1,150 CY

71a 02305 12-Inch Decompaction 2 ACRE

72 02315 Slurry Cement Backfill 63 CY

73 02320 CLSM Type 1 1,516 CY

74 02325 CLSM Type 2 245 CY

75 02330 Control Density Fill 560 CY

76 02455 Furnish Class 90 Piles 13,837 LF

77 02455 Furnish Class 140 Piles 8,701 LF

78 02455 Drive Class 90 Piles 276 EA

Bid Schedule

*Section where contract item is defined

00410-12 B-20 (Addn. No. 4, Pg. 5)

Item No.

Section* Item Estimated Quantity

Unit Unit Price

(In Figures)

Total (In Figures)

226 16311 Overhead Distribution Equipment Tools, Accessories, and Spare Parts

1 SET

227 16340 15kV Metal-Clad Switchgear 1 EA

228 16340 Switchgear Tools, Accessories, and Spare Parts

229 16415 Safety Disconnect Switch 1 EA

230 16415 Generator Docking Station 1 EA

231 16442 Switchboard and Motor Control

1 EA

232 16442 Switchboard and Motor Control Tools, Accessories, and Spare Parts

233 16500 Outdoor Lighting 1 JOB LUMP SUM

234 01305 Dispute Resolution Board On-site Meeting

10 EA $6,000 $60,000

235 01305 Hourly Off-site Dispute Resolution Board Related Tasks

20 HR $200 $4,000

TOTAL

END OF DOCUMENT

Dispute Resolution Board

01305-1 B-20 (Addn. No. 4, Pg. 6)

SECTION 01305

DISPUTE RESOLUTION BOARD

PART 1 GENERAL

1.01 DESCRIPTION

A. This section covers the contract items Dispute Resolution Board On-site Meeting and Hourly Off-site Dispute Resolution Board Related Tasks which include, the requirements and procedures for dispute resolution utilizing the Dispute Resolution Board (DRB). The DRB is a three-member board established by the Department and Contractor to assist in the resolution of disputes. This process shall be used for the timely resolution of disputes that arise out of the Work.

1.02 RELATED SECTIONS

A. Supplementary General Conditions, General Conditions, Division 1 sections, and Drawings apply to this section. This section may require direct correlation with the following sections of the contract:

1. Section 01300 – Partnering.

1.03 DEFINITIONS

A. Dispute meeting: Traditional and informal dispute meeting.

B. Dispute Resolution Board (DRB): 3-member board established by the parties to assist in resolving disputes.

C. Party: The Contractor or the Department.

1. The parties: The Contractor and the Department jointly.

2. Each party: The Contractor and the Department severally.

D. Outside technical services: Consultants with no prior direct involvement in the Contract.

PART 2 PRODUCTS

Not Used

01305-2 B-20 (Addn. No. 4, Pg. 7)

PART 3 EXECUTION

3.01 GENERAL

A. The Dispute Resolution shall not be used for the following purposes:

1. Substitution of submitting an RFI or a potential claim record.

2. Disputes between the Contractor and subcontractors or suppliers that have no grounds for a legal action against the Department.

3. Quantification of disputes for overhead expenses or costs.

B. Each party and DRB shall complete the Dispute Resolution Board Agreement form and comply with the provisions of the agreement. For these forms, go to Document 00300 – Information Available.

C. No DRB-related meetings are allowed until each party and the DRB execute the agreement. However, each party and DRB may agree to sign and execute the agreement at the initial project meeting.

D. DRB members shall attend each meeting with the parties.

E. DRB members shall submit an updated disclosure statement whenever there is change in status.

F. The Department will furnish the DRB with the Contract documents and provides meeting facilities at no cost to the Contractor.

G. Neither party may meet nor discuss Contract progress or issues with the DRB members outside of progress meetings, traditional dispute meetings, and informal dispute meetings unless the other party is present or included in the communication.

3.05 DRB MEMBER SELECTION

A. Dispute Resolution Board Members shall be selected from the California Department of Transportation's Dispute Resolution Board Candidate List found at:

https://dot.ca.gov/programs/construction/drb-information-and-candidate-list/drb-candidates-list

B. Within 45 days after Notice to Begin Work, the parties shall select DRB members and establish the DRB using the following procedure:

https://dot.ca.gov/programs/construction/drb-information-and-candidate-list/drb-candidates-list https://dot.ca.gov/programs/construction/drb-information-and-candidate-list/drb-candidates-list

01305-3 B-20 (Addn. No. 4, Pg. 8)

1. Each party nominates a DRB member candidate that shall:

a. Be knowledgeable in the contract documents and the type of construction anticipated in the Contract.

b. Have no prior direct involvement on the Contract.

c. Have no financial interest in the Contract or with the parties, subcontractors, suppliers, consultants, or associated legal or business services within 6 months before award and during the Contract except for payments for Department or DRB services or payments for retirement or pensions from either party not tied to, dependent on, or affected by the net worth of the party.

2. The parties shall request a disclosure statement from each nominated DRB member candidate and shall each furnish it to the other party. Each statement shall include:

a. Current resume of the candidate's experience.

b. Declaration statement that describes past, present, anticipated, and planned professional or personal relationships with each of the following:

1) Each party involved in the Contract.

2) Each party's principals.

3) Each party's counsel.

4) Associated subcontractors and suppliers.

3. The parties are allowed:

a. One-time objection to the other party's candidate without stating a reason.

b. Objection to the other party's candidate based on a specific breach of the candidate's responsibilities or qualifications under items 1 and 2 above.

4. If either party objects to the other party's candidate, the party whose candidate was objected to shall nominate another DRB candidate within 5 business days.

5. The 1st candidate from a party that receives no objection becomes that party's selected DRB member.

01305-4 B-20 (Addn. No. 4, Pg. 9)

6. Each party furnishes written notification to its selected DRB member.

7. Within 15 days after their notifications, the selected DRB members recommend to the parties the 3rd DRB member candidate and furnish that candidate's disclosure statement. If the 2 DRB members cannot agree on the 3rd DRB candidate, they will submit a list of two candidates to the parties for the final selection and approval.

8. Within 10 days after the recommendation, each party shall notify the first 2 DRB members whether the party approves of or objects to the recommended 3rd DRB member candidate. Objections may be allowed based on item 3 above.

9. The 3 selected DRB members then decide who will act as the DRB chairman. If the parties do not agree with the selected chairman, the 3rd member will act as the DRB chairman.

3.06 DRB MEMBER REPLACEMENT

A. The services of a DRB member may end at any time with a notice of at least 15 days if any of the following occurs:

1. A member resigns.

2. The Department replaces its selected member.

3. The Contractor replaces its selected member.

4. The Department's and the Contractor’s selected members replace the 3rd member.

5. Either party replaces any member for failing to comply with the required employment or financial disclosure conditions of the DRB membership as described in the Contract and in the Dispute Resolution Board Agreement.

B. Replacing any DRB member shall be accomplished by written notification to the DRB and the other party with substantiation for replacing the member.

C. A replacement DRB member is selected the same way as the original DRB member. The selection of a replacement DRB member shall start upon determination of the need for a replacement and shall be completed within 15 days. The Dispute Resolution Board Agreement shall be amended to reflect the change to the DRB.

01305-5 B-20 (Addn. No. 4, Pg. 10)

3.07 ESTABLISHMENT OF PROCEDURES:

A. Upon selecting the DRB, the parties shall have an initial project meeting at the start of job site activities with the DRB to establish and agree to procedures for:

1. Submitting documents

2. Conducting hearings

3. Providing recommendations

4. Performing associated tasks

B. The established procedures shall comply with the Contract and Dispute Resolution Board Agreement. The procedures need not comply with laws of evidence.

3.08 PROGRESS MEETINGS

A. The parties shall periodically meet with the DRB at the job site so the DRB members can keep abreast of construction activities and become familiar with the work in progress.

B. The meetings shall be held at the start of job site activities and at least once every 3 months after that.

C. The parties may agree to waive the scheduled meetings when the only work remaining is plant establishment work or permanent erosion control establishment work.

3.09 TRADITIONAL DISPUTE MEETINGS

A. The Contractor shall follow the traditional dispute meeting process to pursue a potential claim.

B. Either party may refer a dispute to the DRB. To request a dispute meeting, a party shall submit a copy of the referral and supporting documentation to the DRB and the other party. The documentation shall describe the dispute in individual discrete segments such that resolved and unresolved segments are differentiated. The party shall include an estimate of the cost of the affected work and impacts to the work completion date.

C. If the dispute involves a subcontractor, the subcontractor's superintendent or project manager shall attend the meeting otherwise your position paper is considered as your entire position.

01305-6 B-20 (Addn. No. 4, Pg. 11)

D. Only the following persons are allowed to participate and present information at the meeting:

1. Engineer or delegated official.

2. Contractor superintendent.

3. Contractor project manager.

4. Either party's employees that have direct knowledge of the dispute and direct involvement in the project.

5. Consultants directly involved in the development of the estimate or construction.

6. Subcontractor's superintendent or project manager if the dispute involves a subcontractor.

E. The person presenting information at the meeting shall have been directly involved in the project at the time the dispute occurred.

F. The following persons are not allowed to attend the meeting:

1. Attorneys.

2. Claim consultants.

3. Outside technical services not employed by either party unless requested by the DRB.

G. If the DRB needs outside technical services to help the DRB make a recommendation, the parties shall agree to the services before they are provided. If the parties and the DRB agree, the technical services may be provided by technical staff who works for either party.

H. During a dispute meeting, each party presents its position, makes rebuttals, furnishes relevant documents, and responds to DRA or DRB questions and requests. The following is not allowed:

1. Testimony under oath.

2. Cross-examination.

3. Reporting of the procedures by a shorthand reporter or by electronic means.

01305-7 B-20 (Addn. No. 4, Pg. 12)

I. If either party fails to attend a dispute meeting, all documents submitted by the nonattending party is considered as the nonattending party's entire position, and the DRB and the attending party may proceed with the dispute process.

3.10 DRB TRADITIONAL DISPUTE MEETING TIMINGS

A. If the Contractor chooses to pursue a potential claim, refer the dispute to the DRB in accordance with the signed partnering charter developed per Section 01300 – Partnering. The dispute meeting shall be held no sooner than 30 days and no later than 60 days after the DRB receives the referral unless the parties otherwise agree.

B. At least 15 days before the scheduled dispute meeting, each party shall provide documentation to the DRB that supports its position and any additional information requested by the DRB. Upon receipt of both parties' position documentation, the DRB chairman will provide each party the other party's position documentation.

C. If the DRB requests additional information at the dispute meeting, the party receiving the request shall provide this information to the DRB and the other party within 10 days after receiving the request.

D. The DRB furnishes a written recommendation report within 30 days after the dispute meeting unless the parties agree to allow more time.

E. Within 10 days after receiving the DRB's recommendation report, either party may request clarification of any part of the recommendation. The DRB furnishes a written response within 7 days of the receipt of request. Only 1 request for clarification from each party is allowed per dispute.

F. Within 30 days after receiving the DRB's recommendation, each party shall furnish a written response to the DRB and the other party indicating acceptance or rejection of the recommendation. If a party rejects the recommendation, the party shall include a list of specific reasons for the rejection. If a party has new information that supports its position, the party may request a reconsideration. The reconsideration request shall be made within 30 days after receiving the DRB's recommendation. Only 1 request for reconsideration from each party is allowed per dispute.

G. If the parties accept the DRB's recommendation but cannot agree on the time or payment adjustment within 60 days after accepting the recommendation, either party may request that the DRB recommend an adjustment.

01305-8 B-20 (Addn. No. 4, Pg. 13)

3.11 INFORMAL DISPUTE MEETINGS

A. The parties may resolve small and uncomplicated disputes using an informal process. The parties may use this process only if the parties and the DRB agree its use is appropriate for resolving the dispute.

B. The informal dispute meeting process is independent from the traditional process. The Department does not grant time extensions for the traditional dispute process if the informal dispute process is used.

C. Each party furnishes the DRB a 1-page brief description of the dispute with supporting documentation and any additional information requested by the DRB.

D. In an informal dispute meeting, each party presents its position and receives the DRB's recommendation orally on the same day the dispute is heard. The DRB furnishes a 1-page report confirming the recommendation within 5 business days.

E. Either party may ask for clarification of the DRB's recommendation at the dispute meeting.

F. If the dispute remains unresolved, the parties shall notify the DRB within 5 business days after receipt of the DRB's written confirmation of the recommendation.

G. The DRB will not be bound by its informal recommendation if a dispute is later heard in a traditional dispute meeting.

H. If the dispute is not resolved using the informal dispute meeting process, the parties shall comply with the traditional dispute meeting specifications.

3.12 RECOMMENDATIONS

A. Recommendations shall be based on the Contract and contract documents.

B. Recommendations resulting from the dispute resolution board process are nonbinding.

C. If the parties resolve the dispute with the aid of the DRB's recommendation, the parties shall implement the resolution.

01305-9 B-20 (Addn. No. 4, Pg. 14)

3.13 COMPLETION OF DISPUTE RESOLUTION

A. All Dispute Resolution activities shall be completed before Contract acceptance. Accelerated timeframes may be used if the parties and the DRB agree.

B. If a dispute becomes an unresolved claim after Release of Contract, comply with Document 00709 – Potential Claims and Claims, Paragraph 2.

C. Neither party may call the DRB members who served on the Contract as a witness in arbitration or other proceedings that may arise from the Contract.

D. The parties shall indemnify and hold harmless the DRB members from and against all claims, damages, losses, and expenses, including attorney's fees, arising out of and resulting from the findings and recommendations of the DRB.

PART 4 PAYMENT

4.10 PAYMENT

A. The Contractor shall pay each DRB member $2,000 per meeting for the DRB member's participation at each on-site meeting.

1. On-site meetings include:

a. Initial project meeting

b. Progress meetings

c. Dispute meetings

2. The contract price paid for DISPUTE RESOLUTION BOARD ON- SITE MEETING includes full compensation for on-site time, travel time and expenses, transportation, lodging, and incidentals for each meeting.

B. The Contractor shall pay each DRB member $200 per hour for agreed off-site or DRB-related tasks.

1. Before a DRB member spends any time reviewing the plans or specifications, evaluating positions, preparing recommendations, completing forms, or performing any other off-site DRB-related tasks, the parties shall agree to pay for the tasks.

01305-10 B-20 (Addn. No. 4, Pg. 15)

2. The contract price paid for HOURLY OFF-SITE DISPUTE RESOLUTION BOARD RELATED TASKS includes full compensation for incidentals such as expenses for telephone, fax, and computer services.

C. The Department does not pay for (1) any DRB-related work performed after Contract acceptance or (2) Contractor cost of preparing for or attending Dispute Resolution Board meetings.

D. The Department pays the Contractor:

1. $6,000 for each DRB on-site meeting.

2. $200 per hour for agreed off-site or DRB-related tasks.

E. The Department does not adjust the unit price for an increase or decrease in the quantity of:

1. DRB on-site meeting.

2. Hourly off-site DRB-related tasks.

F. Within 60 days of receipt of Department's payment, submit copies of associated invoices and supporting documents in the form of a canceled check or bank statement for DRB-payment verification.

END OF SECTION

Earthwork

02305-1 B-20 (Addn. No. 4, Pg. 16)

SECTION 02305

EARTHWORK

1.01 DESCRIPTION

A. The work includes excavation, subgrade preparation and placement of materials associated with levee, channel, structures, roads, pipelines, staging areas, stockpile areas, and other features.

B. This section covers the general requirements for the following contract items:

1. General Excavation, which includes shoring (if required), excavating, transporting and stockpiling material. This includes excavation of soils with conventional excavation equipment within the footprint of the levees and channel and other excavation such as needed for drop structures, pipelines, drainage, ditches, bioretention swales, roadway excavation, concrete structures including culverts, wingwalls, retaining walls, headwalls, concrete cut-off walls, piers, and footings. General Excavation also includes potholing. General Excavation may also be referred to as Structural Excavation in structural drawings.

2. Rock Excavation, which includes shoring (if required), excavating, transporting, and stockpiling material. This includes excavation of rock which cannot be excavated using conventional excavation equipment. This may be encountered in all excavations, but most likely in areas within the channel and areas where structures will be constructed such as the drop structures, box culverts and bridge structures.

3. Compacted Backfill, which includes processing, blending, moisture conditioning, transporting, placing, and compacting material.

Compacted backfill will be used for the channel invert, levee embankments, structures, foundations, and pipes as shown.

Compacted Backfill may also be referred to as Structural Backfill in structural drawings.

4. Common Backfill, which includes processing, blending, moisture conditioning, transporting, placing, and compacting material.

Common fill shall be used as shown and as directed.

5. Import Backfill, which includes loading, transporting, stockpiling, and placing. Import Backfill shall be used as directed. The

Steel Pipe Piles

02455-1 B-20 (Addn. No. 4, Pg. 17)

SECTION 02455

STEEL PIPE PILES

1.01 SUMMARY

A. This section specifies the requirements for the following Contract Items:

1. Furnish Class 90 Piles; and Furnish Class 140 piles, which includes:

a. Furnishing piles to the job site.

b. Splicing piles.

c. Furnishing and installing pile anchors and lugs.

2. Drive Class 90 Piles; and Drive Class 140 Piles, which includes:

a. Driving and cutting the piles off at the elevations shown.

b. Furnishing special driving tips or heavier sections of steel piles.

c. Center-relief drilling.

d. Disposing of material resulting from center-relief drilling.

1.02 RELATED SECTIONS

A. General Conditions, Supplementary General Conditions, Division 1 sections, and Drawings apply to this section. This section may require direct correlation with the following sections of the contract:

1. Section 02211 – Construction Sequence.

2. Section 02305 – Earthwork.

3. Section 03300 –Cast-in-Place Concrete.

02455-3 B-20 (Addn. No. 4, Pg. 18)

a. Statement that the materials and workmanship comply with the Contract and the required tests and inspections have been performed as described.

b. Certified mill test reports for each heat number of steel used in pipe piles being furnished.

c. Test reports for tensile, chemical, and any specified NDT. Test reports shall be based on test samples taken from the base metal, steel, coil, or from the manufactured or fabricated piles.

d. Calculated carbon equivalent. The carbon equivalent may be shown on the mill test report.

C. Hammer Energy:

1. For pile driving hammers with no way of visually observing the ram stroke, submit a printed readout as an informational submittal showing hammer energy during driving operations.

D. Driving System Analysis:

1. The Driving System Analysis shall be sealed and signed by an engineer who is registered as a civil engineer in the State of California.

2. Allow 15 days for the Department's review. Allow an additional 15 days for the review of any resubmittals.

3. Submit a revised Driving System Analysis if the hammers change from those shown in the submittal.

4. For the driving System Analysis, perform driveability analyses as follows:

a. Model the proposed driving system including hammers, cap blocks, and pile cushions based on a wave equation analysis.

b. Use an authorized computer program.

c. Center-relief drilling: If the driveability analyses indicate that open-ended pipe pile and steel shell penetration rates are less than 1 foot per 200 blows and the driving stresses exceed 80 percent of the yield strength of the pipe and steel shell, include assumptions for drilling through the center of the piles and shells.

d. If a follower is used, include:

02455-10 B-20 (Addn. No. 4, Pg. 19) minute for which the hammer is designed is attained. Do not use inefficient steam, air, or diesel hammers.

G. Contractor may use followers for driving piles if authorized. If using a follower, verify its efficiency by furnishing the 1st pile in each bent or footing sufficiently long and drive the pile without the use of a follower.

3.04 CENTER-RELIEF DRILLING

A. If necessary, to attain the specified tip elevation shown, Contractor may center-relief drill.

B. Center-relief drilling shall not be performed within 10 feet of the specified depth.

3.05 ****

3.06 DRIVING

A. Use driving heads or driving blocks that hold the pile in position directly under the hammer when driving.

B. Protect the heads of driven piles from direct impact of the hammer with a cushion driving block. Maintain the cushion in good condition during the entire driving operation. Arrange the cushion driving block such that any reinforcing bars projecting above the pile are not displaced or damaged during driving.

C. Provide special driving tips or heavier pile sections or take other authorized measures to prevent damage to steel piles, steel shells, or steel casings during installation.

D. Drive piles to the position and line shown. The Engineer rejects piles materially out of line. Dispose of rejected piles that interfere with the work. Contractor shall remove or cut off and abandon in place any rejected piles that do not interfere with the work.

E. Drive piles to at least the nominal resistance and the specified tip elevation shown.

F. ****

Seeding and Erosion Control

02925-3 B-20 (Addn. No. 4, Pg. 20)

B. Pre-Activity Meeting: The Contractor shall submit a schedule and agenda for a 1 hour long pre-activity meeting regarding work to be performed under this section. The meeting shall include representatives from the following parties to establish roles, requirements, and coordination.

1. Contractor’s Representative overseeing the environmental protection work.

2. DWR Field Engineer.

3. DWR Environmental Coordinator.

C. Seeding Plan:

1. Within 60 days prior to any seeding work, the Contractor shall submit a detailed plan of activities related to seeding, including, at a minimum, the items listed below. The Contractor shall provide monthly schedule updates thereafter via submittal.

a. Schedule for seed procurement, including storage, and anticipated delivery dates for each seed mix type to be used for the project.

b. Schedule of seeding activities, including dates and durations.

c. Drawings showing areas to be seeded.

D. Seeding Materials:

1. Within 60 days prior to any seeding work, and at least five (5) days prior to ordering, submit the following to the Engineer for approval.

a. Seed: Product detail information from the manufacturer, including at minimum, seed supplier, botanical and common names including varieties, quantities, and source location.

b. Hydromulch: Product detail information from the manufacturer.

c. Tackifier: Product detail information from the manufacturer.

d. Bulking Agent: Product detail information from the manufacturer.

e. Mycorrhizal inoculum: Product detail information from the manufacturer.

E. Seeding Equipment List:

1. At least 14 days prior to beginning any seeding work, the Contractor shall submit catalog data sheets on all equipment to be used for seeding work performed under this specification section, 02925-9 B-20 (Addn. No. 4, Pg. 21)

Table 2. Bioretention Swale Seed Mix

Common Name Scientific Name Lbs of PLS per acre deergrass Muhlenbergia rigens 5.0 blueyed grass Sisyrinchium bellum 1.0 alkali sacaton Sporobolus airoides 8.0

D. Fertilizer:

1. Commercial fertilizer shall be in pelleted or granular form and shall have a guaranteed chemical analysis of 6:1:1 nitrogen/phosphorus/potassium.

E. Straw:

1. Straw shall be mold-free, air-dry uncut straw, and certified as noxious weed free with a consistency for placing with commercial mulch blowing equipment.

2. Straw shall be derived from seedless wheat, rice, or native grasses.

Bedding straw shall not be used.

F. Mycorrhizal Inoculum:

1. Mycorrhizal inoculant shall consist of spores, mycelium, and mycorrhizal root fragments in a solid carrier suitable for handling by hydroseeding or dry seeding equipment.

2. The carrier shall be material in which the inoculum was originally produced and may include organic materials, perlite, calcined clay, or other approved materials consistent with mechanical application and with good plant growth.

3. Mycorrhizal inoculum shall be applied at the minimum rate of 8,900,000 live propagules per hectare (3,600,000 per acre) based on the guarantee of the supplier or an analysis returned by an independent laboratory.

02925-9a B-20 (Addn. No. 4, Pg. 22)

2.02 EQUIPMENT

A. Equipment Suitability: The Contractor shall supply equipment in accordance with these Specifications. Equipment shall be appropriate for the prescribed work and in good working condition as determined by the Engineer. The Contractor shall replace equipment determined by the Engineer to be unsuitable at the Contractor’s expense.

B. Hydroseeding Equipment: Equipment used for application of hydroseeding slurry shall be commercial type hydroseeder and shall have a built-in agitation system with an operation capacity sufficient to agitate, suspend, and homogeneously mix slurry. Tank capacity shall be a minimum of 1,500 gallons and tank shall be mounted on a truck to allow easy access to the site.

C. Hydroseeder Distribution Lines: The lines shall be large enough to prevent stoppage and allow for even distribution of slurry over the site.

D. Hydroseeder Pump: The pump shall be able to generate 150 psi at the nozzle. Water shall be free of contaminants.

02925-11 B-20 (Addn. No. 4, Pg. 23)

1. At no time shall the Contractor’s seeding equipment be operated during precipitation events or on saturated work areas.

2. If the seeding schedule calls for installation when the temperature is expected to be 90 degrees or greater, the Contractor shall schedule seeding in the mornings to avoid seed damage.

3. When special conditions warrant a variance to the seeding operations, a proposed seeding time shall be submitted for acceptance by the Engineer.

4. The Contractor shall be prepared to seed as early as possible when all conditions (weather, moisture, temperature, wind) are acceptable. Seeding dates may be delayed at the discretion of the Engineer based on weather forecast or other reasons to allow for most beneficial results.

3.03 SEED BED PREPARATION

A. Suitable Seedbed: A suitable seedbed is defined as a vegetation and thatch-free soil surface that has been cultivated/prepared to provide a uniform (i.e. non-undulating) surface not containing ridges or depressions with greater than 1-inch elevation from the overall surface plane. The soil surface shall be per these Specifications, with dirt clods pulverized to a maximum of 1-inch in diameter. Refer to Section 02230

– Clearing and Grubbing for Weed Management.

B. Debris Removal: The Contractor shall remove non-native vegetation within the area to be seeded. Contractor shall remove all trimmings, trash, and debris found within the project site and recycle or otherwise dispose of materials as their property in accordance with state and federal regulations prior to initiation of seedbed preparation.

C. De-Compaction: The soil underneath the road to be removed within the State Recreation Area, as shown on the demolition drawings, shall be ripped to break up the soil to a depth of 12 inches, then disced and leveled to prepare a suitable seed bed. See Section 02305 – Earthwork for the 12-inch De-Compaction requirements.

D. Mycorrhizal Inoculum: In order to increase the chance of successful re-seeding, mycorrhizal inoculum shall be added to the habitat soil on the levee slopes. After the habitat soils have been placed, graded, and compacted, the Contractor shall allow 21 calendar days in order for the Department to collect soil samples and perform agriculture suitability testing. After approval by the Engineer, the Contractor shall incorporate mycorrhizal inoculum into the surface soil. The mycorrhizal inoculum shall be hand broadcast onto the top layer of soil at a minimum rate of 60 pounds per acre. After the mycorrhizal inoculum is spread over the entire area of the levee slopes, it shall be blended into the top 6 inches

02925-11a B-20 (Addn. No. 4, Pg. 24) of soil using ripping or tilling equipment. Afterwards, the Contractor shall re-compact the loosened habitat to meet the specification requirements.

3.04 HYDROSEEDING APPLICATION

A. Hydroseeding application shall be utilized for the Final Stabilization Seed mix.

B. Final Stabilization Seeding shall be placed in all areas disturbed by construction upon completion of the Work.

C. Hydroseeding Method: The Contractor shall use one of the following cool season or warm season multistep processes for hydroseeding. All steps shall be completed for a given area within the same day.

1. Cool season process (October through February):

Irrigation System

02936-11 B-20 (Addn. No. 4, Pg. 25)

B. Splicing Materials shall be packaged kit U.L.-approved for underground use such as 3M DBY/DBR, Rain Bird snap-tie wire connector, Gel-Tite Waterproof Wire Connector, Kin One-Step Connector, Spears Dry Splice DS 100 with DS 300 sealant or approved equal.

C. Tracer wires shall be size #14-1 for pressure main lines (where the mains do not share a common trench with remote valve wires).

D. Wire tags. Marking or tagging system shall be durable. Tape-on wire tags are not acceptable. Markers shall consist of 5 polymer characters held in a black, polyethylene tag holder and securely attached to the conductors, or 5 PVC slip-on wire markers.

2.15 SLEEVES AND CONDUIT

A. Irrigation Pipe Sleeves shall be PVC, Schedule 80, PS 21, Type II, Grade I. The pipe sleeve shall be twice the diameter of pipe being sleeved and shall be purple in color.

B. Control Wire Conduit shall be PVC Schedule 40, UL Listed, electrical conduit ASTM F512, size as required by CEC.

C. Galvanized Steel Sleeves, placed by jacking or boring, Contractor shall use galvanized steel pipe conforming to ASTM A53.

2.16 VALVE BOXES

A. Heavy duty plastic with lockable penta-head bolt down lids (minimum 2 bolts). Christy, Armorcast, Ametek, Brooks, Carson or approved equal.

1. Size for control valves and quick coupler valves shall be 14" x 19”.

2. Size for master valve and flow sensor shall be 10” x 15” with 6” extensions.

3. Size for manual valves, check valves, flush valves shall be 10” round, unless noted otherwise on the Drawings.

4. Contractor shall install extensions if required.

B. All plastic valve box lids shall be permanently heat branded by the manufacturer with 2” size ARIAL font lettering as follows:

1. Gate valve box lids: GV.

2. Remote control valve box lids: RCV X-ZZ (where X is the controller letter and ZZ is the valve number).

3. Quick coupler box lids: QC.

Irrigation System

02936-16 B-20 (Addn. No. 4, Pg. 26) water line sleeves. ****

F. Contractor shall extend sleeves 12” minimum beyond edges of paving.

G. Coordinate sleeve installation with the work under other Sections of these Technical Specifications.

H. Contractor shall locate and modify existing under-track sleeves as required with written authorization of the Engineer.

I. Provide surge protection for irrigation control wires every 300’ minimum.

3.06 PIPELINE ASSEMBLY

A. General.

1. Install pipe in accordance with these specifications, manufacturer's instructions, and per ASTM D2774 and D2855.

2. Place rigid PVC pipe no closer than 4” to walk edges and 8” to buildings and walls.

3. Where pipes of dissimilar metals are connected, use dielectric fittings.

B. PVC Solvent Weld Pipe.

1. Solvent weld PVC pipe and fittings shall be as specified consistent with methods recommended by the manufacturer. Clean pipe and fittings of dirt and moisture before assembly. PVC pipe may be assembled on ground surface beside trench. Snake pipe from side to side in bottom of trench to allow for expansion and contraction.

2. Use pipe cutters or other method that does not result in burrs.

Shall not cut PVC pipe with a hacksaw. All pipe cuts shall be square and free of burrs and debris. Allow all joints 24 hours to set before pressure is applied.

C. PVC Threaded Pipe.

1. Make all connections between PVC pipe and metal valves or pipe with threaded fittings using PVC male adapters.

2. Use thread sealant (not thread lubricant) on threaded PVC connections and assemble the joint to hand tight, but not over-tighten.

Cast-in-Place Concrete

03300-18 B-20 (Addn. No. 4, Pg. 27)

1. Shall meet the requirements of ASTM C 494 Type S.

C. Shrinkage-Compensating Admixture:

1. ****

2. Shrinkage-compensating admixture shall be Sika Control NS, Sika Control SC manufactured by Sika Corp, or Conex manufactured by Euclid Chemical. Other shrinkage-compensating admixtures qualified by Caltrans may be approved by the Engineer.

a. Shrinkage-compensating admixture addition rate shall be as recommended by the manufacturer.

3. When batch plant has not previously used a shrinkage-compensating admixture, admixture manufacturer’s technical specialist shall provide on-site representative to assist with mix design and to train batch plant personnel in dispensing and mixing operations.

2.06 CONCRETE POLYMER FIBER

A. Polymer fibers shall meet ASTM D 7508 requirements.

B. Microfibers shall be from 1/2 to 2 inches in length.

C. Macrofibres shall be from 1 to 2-1/2 inches in length.

2.07 CONCRETE MIXTURE

A. Composition and Strength:

1. The Contractor shall design and proportion the concrete mixes in accordance with Table 03300 A – Concrete Mixes.

2. The proportioning of cementitious materials, fine and coarse aggregate, and admixtures shall be in accordance with ACI 211.1.

3. Blended cementitious materials, conforming to ASTM C 595, IL(MS) or IL(HS), may be submitted for portland cement.

4. Slag cement when used in lieu of pozzolan substitution shall be between 25 to 40 percent of total cementitious material, by weight.

03300-19 B-20 (Addn. No. 4, Pg. 28)

5. The quantity of water used in the concrete mix shall be determined by the Contractor, except that the Engineer may direct that such quantity of water be reduced if the slump of the concrete exceeds the specified working limit slump. Concrete consistency shall be uniform from batch to batch.

6. Each cubic yard of concrete for concrete bridge decks must contain at least 1 pound of microfibers and at least 3 pounds of macrofibers.

7. The quantity of fine aggregate used in the composition of the concrete shall be 37 to 39 percent of the total volume of fine and coarse aggregates.

8. Nominal maximum aggregate size: 1-1/2 inch, consisting of a blend of Size Numbers 4 and 57, or Size Numbers 4 and 67, that produce maximum dry-rodded unit weight when tested by ASTM C

29. The quantity of size Number 4 shall not be less than 40 percent of the total coarse aggregate, by weight.

Table 03300 A – Concrete Mixes

Item 28-day f’c

[lb/in2] w/cm*

(max)

ASTM C

Size Number

NMSA**

Portland Cement Content

(min)

[lbs/cy]

Pozzolan Content

(min)

(lbs/cy)

Notes

Structural Concrete-Bridge Deck

3,600 at 28 days

0.45 No. 4 500 90 1, 2

Structural Concrete-Bridge

3,600 at 28 days

0.45 No. 4 500 90

Structural Concrete- General

3,600 at 28 days 0.45 No. 4 470 90

Mass Concrete 3,000 at 28 days

0.45 No. 4 376 120 3

Minor Concrete 3,600 at 28 days

0.50 No. 4 400 90

* Water-to-cementitious materials ratio (w/cm) is maximum, by weight.

Cementitious material weight is cement plus pozzolan or slag.

** Nominal maximum size aggregate.

Notes:

1. Includes drying shrinkage requirements as specified herein.

2. Shall include at least one pound of microfibers and three pounds of macrofibers per cubic yard.

3. Requires temperature monitoring measures and thermal control plan.

03300-36 B-20 (Addn. No. 4, Pg. 29)

6. Broom Finish (BF):

a. Broom concrete surface with a steel or fiber broom to produce corrugations 1/8 inch +/- 1/16 inch deep.

b. Produce broom surface in direction transverse to that of traffic.

c. Broom all areas of a panel in the same direction, overlap adjacent boom stokes.

d. Use the same type and manufacture of broom for all surfaces to provide a consistent appearance.

3.09 JOINTS AND EDGES

A. Construction Joints:

1. Construction joints are joints which are purposely placed in concrete to facilitate construction, reduce initial shrinkage stresses and cracks. Allow time for installation of embedded metal work, or allow for subsequent placing of other concrete.

2. Bond is required at construction joints regardless of whether or not reinforcement is continuous across joint.

3. Locate construction joints where shown or approved. Relocation, addition, or elimination of construction joints will require approval in advance.

B. Contraction Joints:

1. Contraction joints are joints placed in concrete to provide for volumetric shrinkage of a monolithic unit or movement between monolithic units.

2. These joints are constructed so that there will be no bond between concrete surfaces forming the joint.

3. Make joint by forming concrete on one side of joint and allowing it to set before placing concrete on other side of joint.

4. Contraction joints shall have curing compound bond breaker applied according to manufacturer’s recommendations. Apply two coats of bond breaker.

C. Edges: Tool or chamfer edges of concrete where shown or specified elsewhere, as required.

D. Preformed Grooves:

1. Grooves in the concrete liner must be preformed. Sawing or grooving blades shall not be used to form grooves after concrete hardening.

2. Grooves must be aligned straight and true.