Addendum_4-UPDATED_Technical_Specifications,_Section_01025.pdf

Los Reales Landfill Cell 4B – Technical Specifications www.scsengineers.com

SECTION 01025

MEASUREMENT AND PAYMENT

PART 1 GENERAL

1.1 SECTION INCLUDES

A. Measurement and payment methods for line item bid with measurement and payment requirements.

1.2 MEASUREMENT OF QUANTITIES

A. Performed according to United States Measures.

B. Based on actual units installed or neat line dimensions of work completed.

1.3 CALCULATION OF QUANTITIES

A. Progress Payment Quantities:

B. CONTRACTOR will compute all quantities of Work performed or of materials and equipment delivered to the site for progress payment purposes.

C. OWNER may at any time verify quantities calculated by CONTRACTOR.

D. Final Payment Quantities: CONTRACTOR will compute all quantities of Work performed or of materials and equipment delivered and installed for final payment purposes. OWNER may perform an independent computation of all quantities of work performed and of materials and equipment installed.

1.4 PAYMENT

A. In accordance with lump sum, unit prices, or force account rates shown on the

CONTRACTOR’S final negotiated Bid Schedule.

B. Includes all costs for overhead and profit and for supplying materials, labor, equipment, and tools and all applicable Federal, State, County, City, and local taxes necessary to complete the Work in accordance with the Specifications, Drawings and Contract Conditions.

1.5 VALUES OF UNIT PRICES

A. The number of units and quantities contained in the Bid Schedule are approximate only and final payment will be made for the actual number of units and quantities incorporated in the work or made necessary to complete the project. All unit and lump prices shall include applicable Federal, State, County, City and local taxes.

B. In the event that work and materials or equipment are required to be furnished to a greater or lesser extent than is indicated by the Contract Documents, such work and materials or equipment shall be furnished in greater or lesser quantities.

1.6 CHANGES AND EXTRA WORK

A. Changes and extra work will be measured and paid for in accordance with the requirements of this Section.

1.7 REJECTED MATERIALS

A. Quantities of material wasted or disposed in a manner not called for in the Specifications; rejected loads of material including material rejected after it has been placed by reasons of the failure of CONTRACTOR to conform to the provisions of the Specifications; material not unloaded from the transporting vehicle; material placed outside the limits indicated by the Drawings or established by OWNER; or material remaining on hand after completion of the Work, will not be paid for, and such quantities will not be included in the final total quantities. No compensation will be made for loading, hauling and disposing of rejected material.

1.8 FORCE ACCOUNT WORK

A. Payment for Force Account work will be determined as follows:

B. Labor.

a. Payment for labor will be based on the Force Account Labor Rate Schedule submitted with the bid.

b. Payment constitutes full compensation for labor including wages, benefits, overhead and profit for each individual.

C. Equipment.

a. Payment for equipment will be based on the Force Account Equipment Rate Schedule submitted with the bid.

b. Payment constitutes full compensation for supplying equipment and includes all costs for maintenance, fuel, insurance, overhead, profit and any other costs necessary to provide and operate the equipment. Payment does not include operator labor cost.

A. Materials.

a. Payment for materials will be paid for at CONTRACTOR’s invoiced cost plus 10 percent.

b. Payment will be based on invoices from suppliers documenting cost to CONTRACTOR.

c. Where invoices are not available, a unit cost must be approved by the OWNER prior to use of the material.

1.9 PAY ITEMS

A. Mobilization/Demobilization Bid Item 1

1. Measurement by Lump Sum (LS), based on mobilizing of equipment and labor to perform work and demobilizing from and cleaning the site after all work and testing has been performed and accepted by the OWNER.

2. Payment as follows: 50 percent of lump sum amount upon completion of 10 percent of the work and 50 percent after demobilization and site cleanup. Payment includes all costs for mobilizing and demobilizing equipment, living expenses, bonds, insurance, office and field overhead, geosynthetic installer management and any other administrative costs necessary to complete the work. Includes work described in all Construction Documents (Plans, Specifications, CQA Plan). Payment will be limited to 5 percent of the total contract price.

B. AZPDES Permit and the Storm Water Pollution Bid Item 2 Prevention Plan and Implementation

1. Measured by Lump Sum.

2. Payment includes all costs to prepare and submit to the State of Arizona a Construction Storm Water Pollution Prevention Plan, Notice of Intent, Notice of Termination for the project area. Bid item also includes Contractor’s cost to fully implement, monitor, and document the provisions of the permitted SWPPP during the contract term and until the Owner has provided acceptance of the work. Failure to implement proper stormwater control measures resulting in damage to completed work during the contract term will be repaired/replaced at the Contractor’s expense. Contractor not responsible for stormwater controls outside the limits of the construction areas. Stormwater controls shall be in accordance with the requirements of Section 01560.

C. Demolition, Salvage, Removal, and Disposal Bid Item 3

1. Measurement by Lump Sum

2. Payment includes all cost to completely demolish, remove, salvage or dispose of the existing steel frame building, pump and treat storage pond, and water truck filling station as directed on Sheet 4 of the Construction Plans. Associated surface soil cut/fill grading quantities measurement and payment are included in Bid Item 4.

D. Mass Excavation and Grading Bid Item 4

1. Measured by in-place Cubic Yard. Includes Clearing/Grubbing (Section 02100) Excavation, Stockpiling of Cut Material (location as directed by Owner, Section 02221), Placement and Compaction of Fill Material (Engineered, General, or Channel Berm as defined in Section 02222), Rough Grade, and Fine Grade of Cell 4B Subgrade and Perimeter Infrastructure as shown on Sheet 5 of the Plans, and Pump and Treat Pond Grading as Shown on Sheet 10 of the Plans. [Note: estimated cut quantities shown are bank and fill quantities are compacted in place]

2. Measurement of in-place cut and fill quantities will be made by comparing pre-construction topography with post-construction topography. Pre- construction topography will be established by field survey of existing grades. Survey will establish existing grades at a maximum 50-foot grid and establish major grade breaks. Post-construction topography will be established by a similar survey at a maximum 50-foot grid and also establish major grade breaks.

Calculations will be made on an average end area basis vertically with a 2-foot contour interval.

3. Payment will be made by the Cubic Yard. Payment includes all costs to load, haul, place, moisture condition and compact as described in Sections 02221 and 02222, and as shown on the Drawings.

E. Four (4) Parallel - 24” HDPE Corrugated Pipe Culverts Bid Item 5

1. Measured by the actual installed total Linear Foot, based on post-construction survey.

2. Payment will be by Lineal Foot. Payment includes all costs to furnish the equipment and labor necessary to install the culvert pipes, including but not limited to fusion or joints of pipe and fittings (if any) backfill and compaction as specified in the Construction Plans.

F. 12”-24” Riprap Aprons Bid Item 6a and 6b

1. Measurement by area installed, measured by the square yard based on a perimeter survey of the completed installation.

2. Contractor shall provide two unit prices as follows:

a. Cost per unit to purchase, import, stockpile (if necessary), haul, and place rock from an offsite/third-party source.

a.b. Cost per unit to load, stockpile (if necessary), haul, and place suitable existing onsite rock sources.

2.3. Payment will be by the Square Yard. Includes all costs to over excavate, prepare subgrade, install geotextile and furnish and place riprap 18-inches thick minimum where shown on plans.

G. Asphalt Millings Road Surfacing Bid Item 7

1. Measurement by volume installed measured by the cubic yard.

Purchase of asphalt millings is not required, the City of Tucson will provide required asphalt millings material.

2. Payment will be per the cubic yard compacted in place. Includes all costs to over load, haul, place and compact material from the material stockpile identified on the construction plans for the full road top widths indicated on the Construction Plans in two 6-inch compacted lifts for a total 12-inch final compacted thickness.

H. Liner Subgrade Preparation Bid Item 8

1. Measurement by Lump Sum.

2. Measurement based on acceptance of subgrade for liner placement by the CQA Consultant and the geosynthetics installed.

I. Exposed, Clean, and Connect to Cell 4A Liner Tie-In Bid Item 9

1. Measurement by Lineal Foot of tie-in uncovered, based on the perimeter survey performed along the eastern edge of the bottom liner of the Cell 4B area.

2. Payment will be by Lineal Foot. Payment includes all costs to locate, excavate, remove plywood, expose tie-in and prepare liner as shown on the Drawings and described in Sections 02778 and 02779.

J. Geosynthetic Clay Liner Bid Item 10

1. Measurement by area installed including anchor trenches, measured by the 3-dimensional surface area (parallel to surface) in square foot based on a perimeter survey of the completed installation. No adjustment will be made for uneven contours or for overlap at seams or wastage. No measurement will be made for geosynthetic clay liner lost due to damage resulting from either the fault or negligence of the CONTRACTOR. The perimeter is defined as the neat line dimension of the liner limit shown on the anchor trench and perimeter details.

2. Payment will be by the Square Foot. Includes all costs to install the geosynthetic clay liner, as shown on the Drawings and described in Section 02779.

3. This item will also include all Construction Quality Control testing conducted by the Contractor for the geosynthetic clay liner.

K. 60-Mil, Double-Sided Textured Geomembrane Liner Bid Item 11

1. Measurement by area installed including anchor trenches. Measured the 3-dimensional surface area (parallel to surface) by square foot based on a perimeter survey of the completed installation. No adjustment will be made for uneven contours or for overlap at seams or wastage. No measurement will be made for geomembrane lost due to damage resulting from either the fault or negligence of the CONTRACTOR. The perimeter is defined as the neat line dimension of the liner limits shown on the anchor trench and perimeter details.

2. Payment will be by the Square Foot. Includes all costs to install the geomembrane, as shown on the Drawings and described in Section

02778.

3. This item will also include all Construction Quality Control testing conducted by the Contractor for the geomembrane liner.

L. 16-oz/square yard Non-Woven Needle Punched Geotextile Bid Item 12

1. Measurement by area installed including anchor trenches. Measured the 3-dimensional surface area (parallel to surface) by square foot based on a perimeter survey of the completed installation. No adjustment will be made for uneven contours or for overlap at seams or wastage. No measurement will be made for geomembrane lost due to damage resulting from either the fault or negligence of the CONTRACTOR. The perimeter is defined as the neat line dimension of the liner limits shown on the anchor trench and perimeter details.

2. Payment will be by the Square Foot. Includes all costs to install the geotexile, as shown on the Drawings and described in Section 02771.

3. This item will also include all Construction Quality Control testing conducted by the Contractor for the geomembrane liner.

M. 8-oz/square yard Non-Woven Needle Punched Geotextile Bid Item 13

1. Measurement by area installed including anchor trenches. Measured the 3-dimensional surface area (parallel to surface) by square foot based on a perimeter survey of the completed installation. No adjustment will be made for uneven contours or for overlap at seams or wastage. No measurement will be made for geomembrane lost due to damage resulting from either the fault or negligence of the CONTRACTOR. The perimeter is defined as the neat line dimension of the liner limits shown on the anchor trench and perimeter details.

2. Payment will be by the Square Foot. Includes all costs to install the geotexile, as shown on the Drawings and described in Section 02771.

3. This item will also include all Construction Quality Control testing conducted by the Contractor for the geomembrane liner.

N. Anchor Trench Bid Item 14a-14e

1. Measurement by the Lineal Foot of Anchor Trench installed along the west side of the Cell 4B area.

2. Payment will be by Lineal Foot. Payment includes all costs to locate, excavate, backfill and compact, placement of protective berm, and placement of plywood as indicated for the various Anchor Trench types as shown on the Drawings and described in Section 02222.

O. Leachate Collection and Removal System (LCRS) Bid Item 15 Drainage Layer Gravel

1. Measurement will be based on the surveyed area multiplied by the specified neat line thickness for the LCRS drainage layer gravel material meeting the gradation requirements of Section 02222 and as shown on the Drawings. CONTRACTOR will be responsible for verifying specified thickness by survey methods. No adjustments will be made in the area for uneven contours.

2. Payment will be by the Cubic Yard in-place. Payment includes all costs to furnish equipment and labor to load, haul and place material as shown on the Drawing.

3. This item will also include all Construction Quality Control testing conducted by the Contractor for the LCRS drainage layer gravel.

P. Protective Soil Layer Bid Item 16

1. Measurement will be based on the surveyed area multiplied by the specified neat line thickness for the Operations Layer Material meeting the gradation requirements of Section 02222 and as shown on the Drawings. CONTRACTOR will be responsible for verifying specified thickness by survey methods. No adjustments will be made in the area for uneven contours.

2. Payment will be by the Cubic Yard in-place. Payment includes all costs to furnish equipment and labor to load, haul and place material as shown on the Drawings and as described in Section 02222.

Q. 6” PVC Leachate Collection Drain - Perforated Bid Item 17

1. Measurement based on actual length, based on survey performed by

CONTRACTOR.

2. Payment will be by Lineal Foot. Payment includes all costs to furnish the equipment and labor necessary to install the leachate collection drain, including but not limited to, perforated PVC pipe and gravel fill.

3. This item will also include all Construction Quality Control testing conducted by the Contractor for the leachate collection drain – perforated.

R. 18” HDPE Leachate Riser - Solid Wall Bid Item 18

1. Measured by the actual Linear Foot, based on survey performed by

CONTRACTOR.

2. Payment will be by Lineal Foot. Payment includes all costs to furnish the equipment and labor necessary to install the leachate riser – solid wall, including but not limited to, cut and connect to existing riser end cap, geotextile (quantity included in Bid Item 12), solid wall HDPE pipe, reducers, fittings, and bench gravel fill.

S. Leachate Riser Pump Station Concrete Headwall Bid Item 19

1. Measured by Lump Sum.

2. The Contractor is responsible for the purchase and complete installation two one leachate pumping systems at the location indicated on the Construction Drawings. This includes installation/mounting of pump control boxes, pump startup/programming/testing.

3. The Contract Price for this item shall be full lump sum compensation per completed and approved pump system and shall include all labor, material, equipment, and other incidentals required to provide an operational pumping system to comply with the Contract Drawings and Technical Specifications (unless specifically identified as a pay item).

T. Leachate Pump and Control Panels Bid Item 20

1. Measured by Lump Sum

2. The Contractor is responsible for complete purchase and installation of the complete leachate pumping system (pump, panels, cables, controllers, etc) at the leachate pumping system location indicated on the Construction Drawings. The Contract Price for this item shall be full lump sum compensation per completed and approved pump system and shall include all labor, material, equipment, and other incidentals required to provide an operational pumping system.

U. Leachate Pump Discharge Assembly Bid Item 21

1. Measured by Lump Sum

2. The Contractor is responsible for complete installation of the mechanical pump discharge assembly at the leachate pumping system locations indicated on the Construction Drawings. This includes connection to the leachate forcemain. The Contract Price for this item shall be full lump sum compensation per completed and approved pump system and shall include all labor, material, equipment, and other incidentals required to provide an operational pumping system.

V. 3”x6” HDPE Dual Contained Leachate Forcemain Bid Item 22

1. Measured by the actual Linear Foot, based on survey performed by

CONTRACTOR.

2. Payment will be by Lineal Foot. Payment includes all costs to furnish the equipment and labor necessary to install the 3”x6” HDPE Dual Contained Forcemain including but not limited to connect to leachate pump discharge assembly, trenching, bedding, backfill/compaction of trench, dual contained pipe, reducers and fittings, and pressure testing necessary to extend the forcemain along the indicated alignment below grade up-to the proposed Frac Tank.

W. Construct Cell 4A Water Truck Filling Station Bid Item 23

1. Measured by Lump Sum

2. Payment includes all costs to furnish the equipment and labor necessary to purchase and install 21,000 gallona dual walled Frac Tank with minimum capacity of 16,380 gallons; perform mechanical connection assembly of leachate forcemain to Frac tank top fill port; Relocation of existing 7HP pump (including construction of new reinforced concrete pump pad); Relocation of existing Water Truck Filling J-Stand and Cattle Guard; perform mechanical piping connections and assembly between Frac Tank, 7HP Pump, and J-Stand.

X. Construct Pump and Treat Pond Water Truck Fill Station Bid Item 24

1. Measured by Lump Sum

2. Payment includes all costs to furnish the equipment and labor necessary to purchase and installation new 7HP Pump, J-Stand and Cattle Guard (includes reinforced concrete pad for pump); perform mechanical connections between pond, pump, and J-stand; relocate and install of existing 5-hp pump (includes reinforced concrete pad for pump); relocation of existing Inclined Tank and cattle guard; perform piping and Mechanical connections between 5HP Pump and Inclined Tank; Purchase and Install Piping Connections between existing potable water valve and Inclined Tank.

Y. Cut and Redirect existing Pump and Treat Discharge Line Bid Item 25

To New Pond.

1. Measured by Lump Sum

2. Payment includes all costs to furnish the equipment and labor necessary to cut, remove, and dispose of existing below grade forcemain, protect in place existing pump and discharge assembly, redirect pump discharge to fill new pond.

Z. Electrical Services and Connections Bid Item 26

1. Measured by Lump Sum

2. Payment includes all costs to furnish the equipment and labor necessary to provide power to the various pumps and lighting as specified in the Electrical Construction Plans. All electrical work must be performed by a qualified electrician licensed in the State of Arizona.

Bid price shall include necessary anticipated costs associated obtaining necessary electrical permits from the City and Local Utility, and coordinating inspections of work by the City and Local Utility for approval.

AA. Pond Liner Ballast Tubes Bid Item 27

1. Measured by the actual Linear Foot, based on measured installed product

2. Payment will be by Lineal Foot. Payment includes all costs to furnish the equipment and labor necessary to completely install the liner ballast tubes including but not limited to purchase, delivery, filling, cutting, linking and placement.

AA.BB. Construction Taxes Bid Item 287

1. Measured by incurred cost.

2. Payment includes all costs assessed for Federal, State, County and City taxes. CONTRACTOR shall provide invoices or similar documentation of the assessed tax amount from each taxing authority to the OWNER verifying the actual amount paid. Taxes under this item will be paid at the actual amount assessed, without markup, and will not be subject to the early payment discount provision to this contract.

PART 2 PRODUCTS

Not Used

PART 3 EXECUTION

Not Used

END OF SECTION