Signed_Specifications_-_Harbor_Dr_and_WC_Dr_Sewer_MH_Replacement.pdf

HARBOR DR & WEST CLIFF DR SEWER MANHOLE REPLACEMENT

PROJECT NO. c401511

PROPOSAL

Harbor Dr & West Cliff Dr Sewer Manhole Replacement

Bid Schedule

Harbor Dr

Item Description Qty Unit Unit Price Item Total

1 Mobilization & Demobilization 1 LS

2 Traffic Control 1 LS

3 Remove & Replace Sewer Manhole 2 EA

4 Pavement Restoration 1 LS

5 Sewage Bypass 1 LS

6 All Work Not Included in Items #1-5 1 LS

SUB-TOTAL

10% CONTINGENCY $

TOTAL $

Bids shall be submitted at https://procurement.opengov.com/portal/santacruzca. All submissions shall be submitted electronically, no physical bids will be accepted.

The contingency is reserved for unforeseen project tasks. No payment will be made to the Contractor for any portion of the contingency unless a contract change order is approved by the Engineer.

https://procurement.opengov.com/portal/santacruzca

GENERAL REQUIREMENTS

Failure to Execute Contract

Failure of the lowest responsible bidder, the second lowest responsible bidder, or the third lowest responsible bidder to execute the Contract as provided herein within 10 calendar days after such bidder has received the Contract for execution shall be just cause for the annulment of the award and the forfeiture of the proposed guarantee.

Contractor's Insurance

Insurance

Contractor shall procure and maintain for the duration of the contract, insurance against claims for injuries to persons or damages to property which may arise from or in connection with the performance of the work hereunder by the Contractor, his agents, representatives, employees, or subcontractors.

Minimum Scope and Limit of Insurance

Coverage shall be at least as broad as:

1. Commercial General Liability (CGL): Insurance Services Office Form CG 00 01 covering CGL on an “occurrence” basis, including products and completed operations, property damage, bodily injury and personal & advertising injury with limits no less than

$2,000,000 per occurrence.

If a general aggregate limit applies, either the general aggregate limit shall apply separately to this project/location or the general aggregate limit shall be twice the required occurrence limit.

2. Automobile Liability: Insurance Services Office Form Number CA 0001 covering Code

1 (any auto), with limits no less than $1,000,000 per accident for bodily injury and property damage.

3. Workers’ Compensation insurance as required by the State of California, with Statutory

Limits, and Employers’ Liability insurance with a limit of no less than $1,000,000 per accident for bodily injury or disease. The Workers’ Compensation policy shall be endorsed with a waiver of subrogation in favor of the City of Santa Cruz for all work performed by the Contractor, its employees, agents and subcontractors.

Deductibles and Self-Insured Retentions

Any deductibles or self-insured retentions must be declared to and approved by the City of

Santa Cruz. At the option of the City of Santa Cruz, either: the Contractor shall cause the insurer shall reduce or eliminate such deductibles or self-insured retentions as respects the

City of Santa Cruz, its officers, officials, employees, agents and volunteers; or the

Contractor shall provide a financial guarantee satisfactory to the City of Santa Cruz guaranteeing payment of losses and related investigations, claim administration, and defense expenses.

Other Insurance Provisions

The insurance policies are to contain, or be endorsed to contain, the following provisions:

1. The City of Santa Cruz, its officers, officials, employees, agents, and volunteers are to be covered as additional insureds on the CGL and automobile liability policies with respect to liability arising out of work or operations performed by or on behalf of the

Contractor including materials, parts, or equipment furnished in connection with such work or operations and automobiles owned, leased, hired, or borrowed by or on behalf of the

Contractor. General liability coverage can be provided in the form of an endorsement to the Contractor’s insurance (at least as broad as ISO Form CG 20 10, 11 85 or both CG 20

10 and CG 20 37 forms if later revisions used).

2. For any claims related to this project, the Contractor’s insurance coverage shall be primary insurance as respects the City of Santa Cruz, its officers, officials, employees, agents, and volunteers. Any insurance or self-insurance maintained by the City of Santa

Cruz, its officers, officials, employees, agents, or volunteers shall be excess of the

Contractor’s insurance and shall not contribute with it.

3. Each insurance policy required by this clause shall provide that coverage shall not be canceled, except with written notice to the City of Santa Cruz.

Claims Made Policies

If any coverage required is written on a claims-made coverage form:

1. The retroactive date must be shown, and this date must be before the execution date of the contract or the beginning of contract work.

2. Insurance must be maintained and evidence of insurance must be provided for at least five

(5) years after completion of contract work.

3. If coverage is canceled or non-renewed, and not replaced with another claims-made policy form with a retroactive date prior to the contract effective, or start of work date, the

Contractor must purchase extended reporting period coverage for a minimum of five (5) years after completion of contract work.

4. A copy of the claims reporting requirements must be submitted to the City of Santa Cruz for review.

Acceptability of Insurers

Insurance is to be placed with insurers with a current A.M. Best rating of no less than A: VII, unless otherwise acceptable to the City of Santa Cruz.

Waiver of Subrogation

Contractor hereby agrees to waive rights of subrogation which any insurer of Contractor may acquire from Contractor by virtue of the payment of any loss. Contractor agrees to obtain any endorsement that may be necessary to affect this waiver of subrogation. The Workers’

Compensation policy shall be endorsed with a waiver of subrogation in favor of the City of

Santa Cruz for all work performed by the Contractor, its employees, agents and subcontractors.

Verification of Coverage

Contractor shall furnish the City of Santa Cruz with original certificates and amendatory endorsements, or copies of the applicable insurance language, effecting coverage required by this contract. All certificates and endorsements are to be received and approved by the City of Santa

Cruz before work commences. Failure to demand evidence of full compliance with the insurance requirements set forth in this contract or failure to identify any insurance deficiency shall not relieve Contractor from, nor be construed or deemed a waiver of, its obligation to maintain the required insurance at all times during the performance of this agreement. The City of Santa Cruz reserves the right to require complete, certified copies of all required insurance policies, including endorsements, required by these specifications, at any time.

Subcontractors

Contractor shall require and verify that all subcontractors maintain insurance meeting all the requirements stated herein, and Contractor shall ensure that City of Santa Cruz, its officers, officials, employees, agents, and volunteers, are additional insureds on insurance required from subcontractors. For CGL coverage subcontractors shall provide coverage with a format least as broad as CG 20 38 04 13. (*Insurance requirements may be modified for subcontractors depending on the scope of work and degree of risk involved).

Time of Completion

Attention is directed to the provisions in Section 8 (Commencement of Work, Time of Completion and Liquidated Damages) of the Standard Specifications and these General Conditions.

The Contractor shall diligently prosecute the work to completion within 28 working days of mobilization to site. The Contractor shall complete the work within 45 working days from the issue of the purchase order.

TECHNICAL SPECIFICATIONS

1. SCOPE OF WORK

The work to be done consists, in general, of replacing 2 sewer manholes, reconnecting the new manholes to existing sanitary sewer piping, and restoring asphalt pavement. The manholes are in separate locations: Harbor Dr & Windsor St intersection (Q7-SM518) and West Cliff Dr &

David Way intersection (M3-SM608).

The Contractor shall submit a construction schedule for the work. The City shall have review authority over said schedule.

The Contractor shall provide all labor, materials, tools, equipment, and services required for the complete and proper execution of all the work as shown on the drawings and/or outlined in these specifications. Work shall include items not specifically mentioned herein or noted on plans but necessary to make a complete working installation of all systems shown or described herein.

2. NOTIFICATION OF CONSTRUCTION

The Contractor shall notify the Engineer at least 5 working days prior to commencing work.

No Parking Signs, if utilized, must be placed along each roadway at least 72 hours in advance in order for parking restrictions to be enforced by the Police Department. No Parking Signs may be acquired from the City, or the Contractor may elect to provide their own No Parking Signs. If the

Contractor provides their own signs, the intended sign must be approved by the Engineer prior to its use.

3. WATER POLLUTION CONTROL

Water pollution control work shall conform to Chapter 4 of the Best Management Practices

Manual for the City’s Storm Water Management Program available on the City of Santa Cruz website at:

http://www.cityofsantacruz.com/government/city-departments/public-works/stormwater/best-management-practices

Payment for Water Pollution Control and all costs therefore shall be included in the various contract unit prices and no additional allowance will be made therefore.

http://www.cityofsantacruz.com/government/city-departments/public-works/stormwater/best-management-practices http://www.cityofsantacruz.com/government/city-departments/public-works/stormwater/best-management-practices

4. MOBILIZATION & DEMOBILIZATION

This section governs the mobilization and demobilization of personnel, equipment, and materials at the work site for contract items that will be performed by the Contractor. Mobilization and demobilization shall include but not be limited to the movement and staging of equipment, personnel, materials, supplies, etc. to and from the work site.

It is the Contractor’s responsibility to secure staging area for contract work, and any associated costs are included in the various contract prices paid, with no additional compensation allowed therefor. Staging area shall be confirmed with Engineer prior to start of work.

All work shall be confined to working hours from 8:00 AM to 4:30 PM during workdays (M-F).

No weekend work shall be permitted.

Payment for Mobilization and all costs therefore shall be included in the contract unit price paid per LUMP SUM for “Mobilization & Demobilization”.

5. TRAFFIC CONTROL

The Contractor’s attention is directed to Article 7.16 of the City of Santa Cruz Department of

Public Works Standard Specifications. The Contractor shall not begin work prior to 8:00 AM unless written approval is received by the City Engineer. The Contractor shall provide for the safe movement of traffic with as little inconvenience to the public as possible. The Contractor shall have streets and sidewalks completely open to two-way traffic by 4 PM daily. The streets shall remain open for two-way traffic unless temporary closing and detouring is specifically authorized in writing by the Engineer.

The Contractor shall clean the street and keep all lanes, except parking lanes, open for traffic for weekends and evenings throughout the construction period. The Contractor shall furnish and place temporary construction area signs required for the direction of public traffic through or around the work during construction.

Prior to beginning work, the Contractor shall submit a traffic control plan for review and approval by the Engineer. The following requirements shall be included in the traffic control plan:

1. The traffic control plan shall be consistent with and in accordance with the State of

California Department of Transportation “Manual of Traffic Controls,” with any modifications requiring approval of the City Traffic Engineer.

2. The Contractor shall place portable delineators between the work area and the travel way.

Flashing barricades shall be placed at excavations, trenches and shall be carefully maintained by the Contractor at all times.

3. When it is necessary to close the sidewalk, the Contractor shall install signs informing pedestrians that the sidewalk is closed and directing pedestrians to safe alternate pedestrian sidewalk around the work area.

During construction operations, the Contractor shall meet the following conditions:

1. Personal vehicles of the Contractor’s employees shall not be parked within the right-of-way at any time, including any section closed to public traffic.

2. Access for emergency vehicles to adjoining properties shall be maintained at all times during construction.

3. Vehicular and pedestrian access to businesses and homes shall be maintained.

At locations where parking will be prohibited, the Contractor shall place “No Parking” signs on

Type II barricades at least 72 hours prior to parking restriction. The “No Parking signs shall clearly show the dates and times of proposed parking restrictions.

The Contractor shall notify, in writing, businesses, residents, and the Engineer, 24 hours in advance, whenever s/he must obstruct access to businesses or homes, and s/he shall, through thoughtful planning, restore that access as soon as possible. Contractor shall consult with the inspector on the project and with affected business operators in advance of his/her obstructing of vehicular or foot traffic to the properties to be affected, so that the best time for this obstruction can be determined by all concerned.

Payment for Traffic Control and all costs therefore shall be included in the contract unit price paid per LUMP SUM for “Traffic Control.”

6. EXCAVATION AND BACKFILL

This item shall govern: (1) the excavation and proper utilization or otherwise satisfactory disposal of all excavated material, of whatever character, within the right-of-way or other limits of the work indicated and (2) the construction, compaction, shaping and finishing of all earthwork on the entire project in accordance with the specification requirements herein outlined, in conformity with the required lines, grades and typical cross sections indicated on the

Drawings or as directed by the Engineer or designated representative.

Prior to excavating for construction, access pits, and other subsurface work, pavements shall be saw cut along the limit of excavation to form a clean, neat edge on the pavement to remain.

Water used during saw cutting will be collected and properly disposed of. Such water shall not be allowed into gutters or drains. All concrete laitance shall be swept up and disposed of on a daily basis.

Excavate as necessary to remove existing manhole and dispose of construction debris. Structure excavation shall be performed in accordance with Section 19-3 “Structure Excavation and

Backfill” of the Caltrans Standard Specifications. Excavation shall be performed to create a firm, graded, bearing surface to receive structure underlay material.

Where ground water is encountered, the Contractor shall install a dewatering system to control and remove water to create a firm bearing plane at the bottom of the trench to receive pipe bedding material. Ground water generated from water control work shall be disposed of into the sanitary sewer.

Trench spoil, demolished pavement/concrete, and other debris shall be stockpiled in the designated work/staging areas as specified by plans or hauled off at the end of each working day and disposed of at a legal disposal site, meeting the approval of the Engineer.

The details shown on the plans shall be used for all excavation and backfill must be replaced in kind. Disturbed utility trenches shall be backfilled and compacted per respective utility purveyor standards.

The Contractor shall submit certificates of compliance for pipe bedding and engineered fill material subject to the review of the Engineer. If base rock is used as “Upper Trench Zone” backfill the Contractor shall propose the name and provide the qualifications of an independent

Geotechnical Engineering Firm who is routinely engaged and fully qualified to conduct the confirmation tests specified as specified below. The laboratory shall be approved in writing by the City Engineer prior to the start of any backfill operations. All costs of materials and confirmation testing shall be borne by the Contractor.

Payment for Excavation and Backfill and all costs therefore shall be included in the contract unit price paid per EACH for “Remove and Replace Sewer Manhole.” or be included in the various contract unit prices

7. SANITARY SEWER MANHOLE

This work shall consist of removing manholes and constructing new concrete manholes as shown on the plans and City Standard Details. New manhole frames and covers shall be provided by the

City. Concrete collar for frame and covers shall be constructed per Manhole Frame & Cover

Detail.

Manholes to be removed shall be done so by removing entire manhole structure and disposing of legally.

Sanitary sewer manholes shall maintain pipe slope through manhole structure. Flow shall be maintained from upstream pipe to downstream pipe. Existing sewer mains shall be rejoined to the new sewer manholes with PVC SDR-26 pipe connected by Fernco strong back coupling or approved equal. WS Series Waterstop Grouting Rings by Press Seal Gasket Corporation or approved equal shall be installed at the connection of new sanitary sewer pipe segments to new manhole.

Payment for Sanitary Sewer Manhole and all costs therefore shall be included in the contract unit price paid per EACH for “Remove and Replace Sewer Manhole.”

8. SANITARY SEWER PIPE

This work shall consist of installing new 6 inch Polyvinyl Chloride (PVC) sanitary sewer pipe segments to reconnect existing Vitrified Clay pipe (VCP) to new sanitary sewer manholes. New

PVC pipe segments shall be connected to existing VCP sewer piping with Fernco strong back coupling or approved equal.

Products

• PVC pipe shall be ASTM D-3034 SDR 26 solid wall pipe with a uniform “pipe stiffness” of 115 psi.

• Pipe shall be for sewer mains and shall be color green.

• The pipe shall be legibly marked by the pipe manufacturer. The following shall be printed on the pipe:

o Name and trademark of manufacturer.

o Nominal pipe size.

o Standard Dimension Ratio.

• Fernco strongback coupling or approved equal

• WS Series Waterstop Grouting Rings by Press-Seal Gasket Corporation or approved equal.

Installation

All pipe shall be installed per the pipe manufacturer’s recommendations and ASTM D2321 unless in conflict with these plans and specifications.

Rejection

Damaged sections or sections that do not meet the requirements of these specifications shall be completely removed and replaced at the Contractor’s expense.

Removal of 6” VCP

Work shall consist the removal of 6” VCP connected to the existing manholes and shall be disposed of legally. The existing 6” VCP shall be sawcut at the reconnection point where feasible.

Payment for Sanitary Sewer Pipe and all costs therefore shall be included in the contract unit price paid per EACH for “Remove and Replace Sewer Manhole.”

9. TRENCH SHORING

The Contractor’s attention is directed to Section 7-1.02K(6)(b) “Excavation Safety” of the

Caltrans Standard Specification. A fully engineered shoring plan shall be submitted in accordance with the aforementioned Caltrans Standard Specification and Caltrans Trenching and

Shoring Manual and shall be signed and stamped by a California licensed engineer.

Payment for Trench Shoring and all costs therefore shall be included in the contract unit price paid per EACH for “Remove & Replace Sewer Manhole”.

10. EXCAVATION PAVING

Backfilled trenches shall be paved to match existing grade. Asphalt pavement shall be restored beyond the trench area as detailed on the project plans at the Harbor Dr & Windsor St location.

Asphalt over concrete pavement shall be paved to match existing surrounding pavement at the

Westcliff Dr & David Way location. All asphalt paving shall be Hot Mix Asphalt Type A and shall match the existing depth or as specified in plans. New paving shall be constructed against straight and true saw cut edges. The Contractor shall construct new pavement, at the Contractors expense, outside of the original trench limit, if the existing pavement is damaged as a result of the Contractors operation.

Asphalt binder shall be PG 64-10, and shall conform to the provisions in Section 39, “Asphalt

Concrete,” of Caltrans Standard Specifications, Section 12, “Construction of Streets” of the City

Standard Specifications and these special provisions. Asphalt aggregate shall be ½ inch maximum medium grading. RS-1 asphaltic emulsion shall be applied between new asphalt and existing pavement and new asphalt and upper trench zone. Maximum compacted lift thickness shall be 3”. The second lift of HMA shall not be placed until the underlying layer is 160⁰F or less, unless otherwise directed by the Engineer. All concrete shall be six sack class “A” plant mixed PCC, ¾” rock mix. New concrete pavement sections shall be doweled into existing concrete with #4 rebar per project plan details.

The Contractor shall also restore damaged or disturbed AC conform, curb, gutter, valley gutter, and sidewalks during the course of construction. If a portion of AC conform curb, gutter, valley gutter, and/or sidewalk is disturbed by the contractor’s operations, the contractor shall restore the section from existing score line to the next nearest score line. Curbs, gutters, valley gutters, and/or sidewalks shall be constructed per City of Santa Cruz Standard Detail.

The Contractor shall restore all disturbed pre-construction traffic striping and markings. If any portion of a marking is disturbed by the Contractors operations, the Contractor shall re-establish the entire marking per Caltrans standards.

The Contractor shall be responsible for sweeping and cleaning as necessary on roadways and sidewalks after and during project construction to the satisfaction of the Engineer.

Payment for Excavation Paving and all costs therefore shall be included in the contract unit price paid per LUMP SUM for “Pavement Restoration” and EACH for “Remove and Replace Sewer

Manhole.”

11. SEWAGE BYPASS

The Contractor will be required to provide a diversion system with the capacity to divert the peak flow during the time necessary to complete construction. Bypass pumping shall consist of furnishing, installing, and maintaining all power, primary and standby pumps, appurtenances, and bypass piping required to maintain existing sewer main flows and all lateral services. At no time shall the sewer system be allowed to backup, except during the time that is necessary to install the plugs and activate the pumps.

The Contractor shall submit bypass pumping and/or diversion plans for review by the Engineer at least 5 working days prior to the work. The Contractor shall notify the Engineer 24 hours prior to commencing with the bypass pumping operation. The Contractor’s plan for bypass pumping shall be satisfactory to the Engineer before the contractor shall be allowed to commence bypass pumping. City sewer infrastructure can be viewed at: https://data1-cruzgis.opendata.arcgis.com/

Contractor shall have and maintain at the job site adequate standby pumps.

The Contractor shall take all necessary precautions to prevent any leakage or sewage spills of any kind onto private property, public or private roadway, drainage systems and waterways. If pumping is required while the contractor is not on site the Contractor shall provide continuous automatic monitoring system with an audible alarm and shall have available, on an on-call basis, personnel and equipment necessary to handle any clean up that may be necessary due to a spill.

The Contractor shall be liable for any and all clean-up costs or any fines that may be levied including those by the RWQCB against the City, in the event that such leakage or spill occurs. The

Contractor shall be liable for any claims and/or cases submitted by Property Owners for any leakage, spills, and/or improper sewage bypass system.

The Contractor shall also be responsible for reporting any and all spills to the appropriate regulatory agencies, including the Regional Water Quality Control Board and the Santa Cruz

County Health Department. The Contractor shall be responsible for acquiring all necessary permits to operate the pumps and generators.

Payment for Sewage Bypass and all costs therefore shall be included in the contract unit price paid per LUMP SUM for “Sewage Bypass.”

12. FINAL PAYMENT

Payment for all items of work at the unit or lump sum price shall be considered as full compensation for furnishing all labor, materials, tools, equipment, and incidentals necessary to complete work, and no additional allowance will be made therefore.

Payments are made every two weeks by the City Finance Department. The Contractor may receive partial payments only once for any month. A listing of payment cut-off dates is available upon request.

13. SUBMITTALS

Shop drawings shall be submitted for review in the following areas of work:

1. Traffic Control Plan

2. Sewer Bypass Plan

3. Trench Shoring Plan https://data1-cruzgis.opendata.arcgis.com/

4. Proposed Staging Area

5. Drain Rock

6. Concrete Mix Design

7. Asphalt Mix

8. PVC Pipe and Couplings

9. WS Series Waterstop Grouting Rings by Press-Seal Gasket Corporation or approved equal.

10. Sewer Manhole Parts and Materials

11. 2-sack Slurry and/or Base Rock

12. Any other submittals deemed necessary by Engineer or Contractor

All submittals shall be reviewed and checked by the Contractor prior to submittal to Engineer for review.