A07_02_20200821_SECTION 01 27 00 DEFINITION OF CONTRACT LINE ITEMS_0007.pdf
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- Solicitation number
- 140P2020R0079
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This document defines contract line items for the CHOH-151201 Reconstruct/Stabilize Historic Stone Wall & Towpath project solicited by the National Park Service. The project involves reconstructing and stabilizing stone walls and the towpath between McMahons Mill and Lock 42 along the Chesapeake and Ohio Canal in Maryland. Key work includes tree removal, site clearing, excavation, wall reconstruction using salvaged and new stone, towpath construction, culvert replacement, erosion control and seeding/topsoiling. The document outlines 41 contract line items grouping related work activities and specifying measurement and payment terms for each. It also defines 19 bid option line items for optional phases of work that may be awarded.
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CHOH - 151201 01 27 00 - 1
082714 DEFINITION OF CONTRACT LINE ITEMS
SECTION 01 27 00 – DEFINITION OF CONTRACT LINE ITEMS – REVISED 8/21/20 (NPS)
PART 1 - GENERAL
1.1 SUMMARY
A. The intent of this section is to explain, in general, what is and what is not included in a contract line item, and the limits or cut-off points where one item ends, and another begins.
B. If no contract line item exists for a portion of the work, include the costs in a related item.
PART 2 - PRODUCTS (Not Used)
PART 3 - EXECUTION
3.1 LIST OF CONTRACT LINE ITEMS
A. Contract Line Item No. 1: Mobilization & Demobilization.
1. This item consists of mobilization and demobilization.
2. Measurement for payment will be made on lump sum items (L.S.).
3. Payment will be made at the contract lump sum price (L.S.).
B. Contract Line Item No. 2: Contractor Staging & Access/ General Conditions.
1. This item consists of preparation of laydown and materials storage areas, trailers, and all access equipment including barges and cranes.
2. No separate measurement will be made on lump sum items (L.S.).
3. Payment will be made at the contract lump sum price (L.S.).
C. Contract Line Item No. 3: Erosion Control/Oil Seepage Control & Water Testing.
1. This item consists of activities required to protect water quality.
2. No separate measurement will be made on lump sum items (L.S.).
3. Payment will be made at the contract lump sum price (L.S.).
D. Contract Line Item No. 4: Tree Removal (12” and Smaller).
1. This item consists of all site clearing and tree removal along the towpath for trees 12” in diameter and smaller including stump removal, roots, obstructions, debris and backfilling as indicated in drawing notes and specifications. Costs to remove trees with a Diameter at Breast Height (DBH) of 4” or less will be considered to be within CLIN Item No. 6.
2. Measurement for payment will be per tree removed.
3. Payment will be made at the contract price per tree removed.
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E. Contract Line Item No. 5: Tree Removal (13” or Larger).
1. This item consists of all site clearing and tree removal along the towpath for trees 13” in diameter and larger including stump removal, roots, obstructions, debris and backfilling as indicated in drawing notes and specifications.
2. Measurement for payment will be per tree removed.
3. Payment will be made at the contract price per tree removed.
F. Contract Line Item No. 6: Site Clearing and Grubbing.
1. This item consists of all site clearing and grubbing as indicated in drawing notes and specifications. Costs to remove trees with a Diameter at Breast Height (DBH) of 4” or less will be considered to be within this item.
2. Includes existing tree limbing and pruning as indicated on the drawings and directed by
CO.
3. No separate measurement will be made on lump sum items (L.S.).
4. Payment will be made at the contract lump sum price (L.S.)
G. Contract Line Item No. 7: Towpath & Shoulder Excavation and Rough Grading
1. This item consists of excavation, removal, stockpiling and re-use of suitable fill and placement of imported fill as required to prepare rough grade for towpath and shoulders per plans and details. Except for where wall reconstruction impacts towpath prism, see CLIN Item No. 8. Includes fill placement, grading and compaction for subgrade, shoulders and transitions from edges of towpath to top of existing and/or finished wall or to existing grade.
2. Measurement for payment will be per cubic yard. Measurement will be made using pre and post surveys, and the average end area method.
3. Payment will be made at the contract price per cubic yard of installed and compacted material.
H. Contract Line Item No. 8: Wall Excavation.
1. This item consists of excavation, removal and disposal or re-use of suitable fill as required behind existing, extended or reconstructed walls from top of wall to depth indicated per repair type. Includes suitable fill placement, grading and compaction. #57 stone backfill behind walls is listed under CLIN Item No. 12. For free draining material placed beneath the water line within the zone of influence (1H:1V line projected from toe) behind the wall, backfill for this material is listed under CLIN Item No. 14.
2. Measurement for payment will be per cubic yard of material placed within the minimum dimensions required by the plans. Measurement will be made using pre and post surveys, and the average end area method.
3. Payment will be made at the contract price per cubic yard of installed and compacted material.
I. Contract Line Item No. 9: Towpath.
1. This item consists of construction of the towpath surface and base course including all geotextile placement.
2. Measurement for payment will be per cubic yard installed and compacted material.
3. Payment will be made at the contract price per cubic yard.
J. Contract Line Item No. 10: Topsoil and Seeding.
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1. This item consists of installation of topsoil and seeding for areas constructed to meet the design grades shown in the plans and specifications. Topsoil and seeding necessary to stabilize disturbed areas outside of the constructed areas should be addressed under CLIN
3. Any subsequent topsoil and seeding necessary to establish adequate stand of grass after the initial construction is included in the original unit payment for that area.
2. Includes topsoil placement, finish grading and seeding.
3. Measurement for payment will be per square yard of area topsoiled and seeded area per establishment described in specification section 329200 “SEEDING AND TOPSOIL.”
4. Payment will be made at the contract price per square yard.
K. Contract Line Item No. 11: Culvert Replacement.
1. This item consists of removal of existing 18” corrugated metal pipes, installation of 18” HDPE pipes including excavation, backfill, pipe bedding and compaction. The cost also includes modifications to existing stone headwalls and construction of new stone headwalls.
2. Measurement for payment will be per linear foot of pipe installed.
3. Payment will be made at the contract price per linear foot.
L. Contract Line Item No. 12: #57 Stone Backfill Behind Walls.
1. This item consists of installation of #57 stone backfill behind existing, extended or reconstructed walls as indicated on the structural plans including all geotextile placement.
Includes stone placement, grading and compaction.
2. Measurement for payment will be per cubic yard of #57 stone installed in place within the minimum dimensions required by the plans (based on structural wall treatment schedule and details).
M. Contract Line Item No. 13: Repair Existing Dry-laid Stone Walls: Resetting Loose Stones at Top of Wall and Stone Infill.
1. This item consists of performing repairs to existing dry-laid stone walls: resetting loose stones at top of wall and providing stone infill for voids larger than 0.5 SF that cannot be filled with typical re-chinking stone. The intent of this item is to prevent the loss/migration of stone/backfill from within or behind the wall from being lost. Any re-chinking associated with the stone infill with be considered incidental and included as part of this item. Repairs accounted for in this item will be located in the approved wall treatment shop drawings as required in specification section 044300. Surface area of existing dry-laid walls to require this treatment is approximately 350 sf. This includes areas below and above water line.
Any repairs for an individual void with a surface area of 0.5 SF or less will be considered payable under CLIN 13A. Any repairs for an individual void exceeding 0.5 SF will be considered under this item.
2. Measurement for payment will be per square foot of surface area which have had voids infilled with associated re-chinking or stones reset at the top of existing dry-laid walls to remain after all wall repairs for that section of wall have been reviewed and approved per project specifications. Measurements will occur on the plane of the exposed face of wall and will be limited to the extents described above for each type of repair.
3. Payment will be made at the contract price per square foot of wall properly infilled or reset with associated re-chinking after passing Inspection.
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N. Contract Line Item No. 13A: Repair Existing Dry-laid Stone Walls: Re-Chinking Loose Existing Stones.
1. This item consists of performing repairs to existing dry-laid stone walls: re-chinking existing wall to stabilize loose stones in-place within existing wall. Repairs accounted for in this item will be located in the approved wall treatment shop drawings as required in specification section 044300. Gross surface area of existing dry-laid walls to remain is approximately 7,000 sf, including all above and below the waterline that are in poor condition and not covered by other CLINs. Any repairs to stabilize existing loose stones by re-chinking voids limited to a surface area of 0.5 SF or less will be considered payable under this item. Any repairs for an individual void exceeding 0.5 SF will be considered under CLIN 13.
2. Measurement for payment will be per square foot of gross surface area of existing dry-laid walls to remain after all wall repairs for that section of wall have been reviewed and approved per project specifications. Measurements will occur on the plane of the exposed face of wall. Extent of gross wall surface area included in measuring repaired walls shall be based on extent of dry-laid wall repairs measured in the field.
3. Payment will be made at the contract price per square foot of wall properly re-chinked after passing Inspection.
O. Contract Line Item No. 14: Reconstruct Existing Stone Walls (Salvaged Stone).
1. This item consists of reconstructing existing dry-laid & mortared walls along the river using stone salvaged from the walls or areas directly adjacent to the work area.
2. Measurement for payment will be per cubic foot of wall reconstructed within the minimum dimensions specified in the plans.
3. Payment will be made at the contract price per cubic foot.
P. Contract Line Item No. 15: Reconstruct Existing Stone Walls (New Stone).
1. This item consists of reconstructing existing dry-laid & mortared walls along the river using new stone that meets the requirements of the specifications sourced from off-site.
2. Measurement for payment will be per cubic foot of wall reconstructed
3. Payment will be made at the contract price per cubic foot within the minimum dimensions specified in the plans.
Q. Contract Line Item No. 16: Extend Existing Dry-laid Stone Walls.
1. This item consists of constructing a dry-laid vertical extension on top of existing dry-laid stone wall along the river.
2. Measurement for payment will be per cubic foot of wall extension.
3. Payment will be made at the contract price per cubic foot.
R. Contract Line Item No. 17: Extend Existing Mortared Stone Walls.
1. This item consists of construction of a mortared vertical extension on top of existing mortared stone wall along the river.
2. Measurement for payment will be per cubic foot of wall extension.
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3. Payment will be made at the contract price per cubic foot.
S. Contract Line Item No. 18: Repair Existing Mortared Stone Walls.
1. This item consists of repointing and/or setting stone with mortar to match existing mortared stone walls along the river. This includes resetting loose stones at top of existing walls in a bed of mortar, and infilling voids within existing walls with stones and mortar. Repairs accounted for in this item will be located in the approved wall treatment shop drawings as required in specification section 044300. Surface area of existing mortared walls to be repaired is approximately 250 sf. Of note is that all mortar repairs are anticipated to be done above the water line.
2. Measurement for payment will be per square foot of repaired surface area after all wall repairs for that section of wall have been reviewed and approved per project specifications.
Measurements will occur on the plane of the exposed face of the wall surface and will be limited to the extents described below for each type of repair.
a. Resetting loose stones at top of wall in mortar. Repaired area measured along top of wall and width of wall for resetting of existing coping stones. Area of stones reset below coping stones shall be measured along exposed wall surface to include area of reset stones below coping stones only.
b. Infilling voids within existing walls with stones and mortar. Repaired area measured from extent of new mortar surrounding infill stones along exposed wall surface.
c. Repointing directly adjacent to the reset or infilled stones will be incidental to the pay item.
3. Payment will be made at the contract price per square foot of repaired wall surface area after passing Inspection.
3.2 BID OPTIONS
A. Contract Line Item No. 19: Bid Option A – Station 0+00 to 4+00 – Temporary Controls for Option A
1. This item consists of furnishing, installing, and removing all temporary controls necessary to provide safe access to the work site and to secure the work site, including staging areas, installation and removal of temporary erosion and sedimentation controls, signage to provide daily closure of towpath within the work area and all other items necessary to provide a safe work area to reconstruct/stabilize Historic Stone Wall and Towpath from Station 0+00 to Station 4+00 per the drawings and specifications.
2. Measurement for payment will be lump sum or percentage complete of line item per schedule of values.
3. Payment will be made at the contract lump sum price.
B. Contract Line Item No. 20: Tree Removal (12” and Smaller) for Option A.
1. This item consists of all site clearing and tree removal along the towpath for trees 12” in diameter and smaller including stump removal, roots, obstructions, debris and backfilling as indicated in drawing notes and specifications. Costs to remove trees with a Diameter at Breast Height (DBH) of 4” or less will be considered to be within CLIN Item No. 22.
2. Measurement for payment will be per tree removed.
3. Payment will be made at the contract price per tree removed.
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C. Contract Line Item No. 21: Tree Removal (13” or Larger) for Option A.
1. This item consists of all site clearing and tree removal along the towpath for trees 13” in diameter and larger including stump removal, roots, obstructions, debris and backfilling as indicated in drawing notes and specifications.
2. Measurement for payment will be per tree removed.
3. Payment will be made at the contract price per tree removed.
D. Contract Line Item No. 22: Site Clearing and Grubbing for Option A.
1. This item consists of all site clearing and grubbing as indicated in drawing notes and specifications. Costs to remove trees with a Diameter at Breast Height (DBH) of 4” or less will be considered to be within this item.
2. Includes existing tree limbing and pruning as indicated on the drawings and directed by
CO.
3. No separate measurement will be made on lump sum items (L.S.).
4. Payment will be made at the contract lump sum price (L.S.)
E. Contract Line Item No. 23: Towpath & Shoulder Excavation and Rough Grading for Option A.
1. This item consists of excavation, removal, stockpiling and re-use of suitable fill and placement of imported fill as required to prepare rough grade for towpath and shoulders per plans and details. Except for where wall reconstruction impacts towpath prism, see CLIN Item No. 24. Includes fill placement, grading and compaction for subgrade, shoulders and transitions from edges of towpath to top of existing and/or finished wall or to existing grade.
2. Measurement for payment will be per cubic yard. Measurement will be made using pre and post surveys, and the average end area method.
3. Payment will be made at the contract price per cubic yard of installed and compacted material.
F. Contract Line Item No. 24: Wall Excavation for Option A.
1. This item consists of excavation, removal and disposal or re-use of suitable fill as required behind existing, extended or reconstructed walls from top of wall to depth indicated per repair type. Includes suitable fill placement, grading and compaction. #57 stone backfill behind walls is listed under CLIN Item No. 27. For free draining material placed beneath the water line within the zone of influence (1H:1V line projected from toe) behind the wall, backfill for this material is listed under CLIN Item No. 29.
2. Measurement for payment will be per cubic yard of material placed within the minimum dimensions required by the plans. Measurement will be made using pre and post surveys, and the average end area method.
3. Payment will be made at the contract price per cubic yard of installed and compacted material.
G. Contract Line Item No. 25: Towpath for Option A.
1. This item consists of construction of the towpath surface and base course including all geotextile placement.
2. Measurement for payment will be per cubic yard installed and compacted material.
H. Contract Line Item No. 26: Topsoil and Seeding for Option A.
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1. This item consists of installation of topsoil and seeding for areas constructed to meet the design grades shown in the plans and specifications. Topsoil and seeding necessary to stabilize disturbed areas outside of the constructed areas should be addressed under CLIN
19. Any subsequent topsoil and seeding necessary to establish adequate stand of grass after the initial construction is included in the original unit payment for that area.
2. Includes topsoil placement, finish grading and seeding.
1. Measurement for payment will be per square yard of area topsoiled and seeded area per establishment described in specification section 329200 “SEEDING AND TOPSOIL.”
2. Payment will be made at the contract price per square yard.
I. Contract Line Item No. 27: #57 Stone Backfill Behind Walls for Option A.
1. This item consists of installation of #57 stone backfill behind existing, extended or reconstructed walls as indicated on the structural plans including all geotextile placement.
Includes stone placement, grading and compaction.
2. Measurement for payment will be per cubic yard of #57 stone installed in place.
3. Payment will be made at the contract price per cubic yard.
J. Contract Line Item No. 28: Repair Existing Dry-laid Stone Walls for Option A.
1. This item consists of performing repairs to existing dry-laid stone walls: re-chinking existing wall to stabilize loose stones in-place within existing wall, resetting loose stones at top of wall, and providing stone infill for voids. Repairs accounted for in this item will be located in the approved wall treatment shop drawings as required in specification section 044300. The intent of this item is to stabilize loose stones in-place within existing wall and prevent the loss/migration of stone/backfill from within or behind the wall from being lost.
2. Measurement for payment will be per square foot of repaired surface area after all wall repairs for that section of wall have been reviewed and approved per project specifications.
Measurements will occur on the plane of the exposed face of wall. Extent of wall surface area included in measuring repaired walls shall be based on extent of dry-laid wall repairs measured in the field.
3. Payment will be made at the contract price per square foot of wall properly repaired after passing Inspection.
K. Contract Line Item No. 29: Reconstruct Existing Stone Walls for Option A (Salvaged Stone).
1. This item consists of reconstructing existing dry-laid & mortared walls along the river using stone salvaged from the walls or areas directly adjacent to the work area.
2. Measurement for payment will be per cubic foot of wall reconstructed
3. Payment will be made at the contract price per cubic foot within the minimum dimensions specified in the plans.
L. Contract Line Item No. 30: Reconstruct Existing Stone Walls for Option A (New Stone).
1. This item consists of reconstructing existing dry-laid & mortared walls along the river using new stone that meets the requirements of the specifications sourced from off-site.
2. Measurement for payment will be per cubic foot of wall reconstructed
3. Payment will be made at the contract price per cubic foot within the minimum dimensions specified in the plans.
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M. Contract Line Item No. 31: Bid Option B – Station 28+00 to 38+50 - Reconstruct/Stabilize Historic Stone Wall & Towpath Temporary Controls for Option B.
1. This item consists of furnishing, installing, and removing all temporary controls necessary to provide safe access to the work site and to secure the work site, including staging areas, installation and removal of temporary erosion and sedimentation controls, signage to provide daily closure of towpath within the work area and all other items necessary to provide a safe work area to reconstruct/stabilize Historic Stone Wall and Towpath from Station 28+00 to Station 38+50 per the drawings and specifications.
2. Measurement for payment will be lump sum or percentage complete of line item per schedule of values.
3. Payment will be made at the contract lump sum price.
N. Contract Line Item No. 32: Tree Removal (12” and Smaller) for Option B.
1. This item consists of all site clearing and tree removal along the towpath for trees 12” in diameter and smaller including stump removal, roots, obstructions, debris and backfilling as indicated in drawing notes and specifications. Costs to remove trees with a Diameter at Breast Height (DBH) of 4” or less will be considered to be within CLIN Item No. 34.
2. Measurement for payment will be per tree removed.
3. Payment will be made at the contract price per tree removed.
O. Contract Line Item No. 33: Tree Removal (13” or Larger) for Option B.
1. This item consists of all site clearing and tree removal along the towpath for trees 13” in diameter and larger including stump removal, roots, obstructions, debris and backfilling as indicated in drawing notes and specifications.
2. Measurement for payment will be per tree removed.
3. Payment will be made at the contract price per tree removed.
P. Contract Line Item No. 34: Site Clearing and Grubbing for Option B.
1. This item consists of all site clearing and grubbing as indicated in drawing notes and specifications. Costs to remove trees with a Diameter at Breast Height (DBH) of 4” or less will be considered to be within this item.
2. Includes existing tree limbing and pruning as indicated on the drawings and directed by
CO.
3. No separate measurement will be made on lump sum items (L.S.).
4. Payment will be made at the contract lump sum price (L.S.)
Q. Contract Line Item No. 35: Towpath & Shoulder Excavation and Rough Grading for Option B
1. This item consists of excavation, removal, stockpiling and re-use of suitable fill and placement of imported fill as required to prepare rough grade for towpath and shoulders per plans and details. Includes fill placement, grading and compaction for subgrade, shoulders and transitions from edges of towpath to top of existing and/or finished wall or to existing grade.
2. Measurement for payment will be per cubic yard. Measurement will be made using pre and post surveys, and the average end area method.
3. Payment will be made at the contract price per cubic yard of installed and compacted material.
R. Contract Line Item No. 36: Towpath for Option B.
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1. This item consists of construction of the towpath surface and base course including all geotextile placement.
2. Measurement for payment will be per cubic yard installed and compacted material.
3. Payment will be made at the contract price per cubic yard.
S. Contract Line Item No. 37: Topsoil and Seeding for Option B.
1. This item consists of installation of topsoil and seeding for areas constructed to meet the design grades shown in the plans and specifications. Topsoil and seeding necessary to stabilize disturbed areas outside of the constructed areas should be addressed under CLIN
31. Any subsequent topsoil and seeding necessary to establish adequate stand of grass after the initial construction is included in the original unit payment for that area.
2. Includes topsoil placement, finish grading and seeding.
3. Measurement for payment will be per square yard of area topsoiled and seeded area per establishment described in specification section 329200 “SEEDING AND TOPSOIL.”
4. Payment will be made at the contract price per square yard.
T. Contract Line Item No. 38: Culvert Replacement for Option B.
1. This item consists of removal of existing 18” corrugated metal pipes, installation of 18” HDPE pipes including excavation, backfill, pipe bedding and compaction. The cost also includes modifications to existing stone headwalls and construction of new stone headwalls.
2. Measurement for payment will be per linear foot of pipe installed.
3. Payment will be made at the contract price per linear foot.
U. Contract Line Item No. 39: Repair Existing Laid-Back Stone Revetment for Option B.
1. This item consists of performing repairs to existing stone revetments along the river:
providing stone infill for voids and securing the stone infill with associated re-chinking.
Repairs accounted for in this item will be field located at the direction of the CO, but will be focused on addressing existing voids and mitigation of root damage from vegetation.
The intent of this item is to prevent the loss/migration of stone/backfill from within or behind the revetment from being lost.
2. Measurement for payment will be per square foot of repaired surface area after all repairs for that section of revetment have been reviewed and approved per project specifications.
Measurements will occur on the plane of the exposed face of revetment. Extent of surface area included in measuring repaired revetments shall be based on extent of dry-laid repairs measured in the field.
3. Payment will be made at the contract price per square foot of revetment properly repaired after passing Inspection.
V. Contract Line Item No. 40: Bid Option C – Station 38+50 to 51+75 - Reconstruct/Stabilize Historic Towpath
1. This item consists of all labor and materials required to reconstruct/stabilize Historic
Towpath from Station 38+50 to Station 51+75 per the drawings and specifications. This includes, but not limited to, establishing temporary controls, removing trees, performing
CHOH - 151201 01 27 00 - 10
clearing and grubbing, removing sediment from the towpath, resurfacing the existing towpath, replacing the existing culvert, and stabilizing with topsoiling/seeding.
2. Measurement for payment will be lump sum or percentage complete of line item per schedule of values.
3. Payment will be made at the contract lump sum price.
W. Contract Line Item No. 41: Bid Option D – Widen Towpath Trail to 8’
1. This item consists of all labor and materials required to widen the towpath trail to 8’ at locations shown on the plans per the drawings and specifications.
2. Measurement for payment will be lump sum or percentage complete of line item per schedule of values.
3. Payment will be made at the contract lump sum price.
END OF SECTION 01 27 00
| PART 1 - GENERAL |
| 1.1 SUMMARY |
| A. The intent of this section is to explain, in general, what is and what is not included in a contract line item, and the limits or cut-off points where one item ends, and another begins. |
| B. If no contract line item exists for a portion of the work, include the costs in a related item. |
| PART 2 - PRODUCTS (Not Used) |
| PART 3 - EXECUTION |
| 3.1 LIST OF CONTRACT LINE ITEMS |
| A. Contract Line Item No. 1: Mobilization & Demobilization. |
| 1. This item consists of mobilization and demobilization. |
| 2. Measurement for payment will be made on lump sum items (L.S.). |
| 3. Payment will be made at the contract lump sum price (L.S.). |
| B. Contract Line Item No. 2: Contractor Staging & Access/ General Conditions. |
| 1. This item consists of preparation of laydown and materials storage areas, trailers, and all access equipment including barges and cranes. |
| 2. No separate measurement will be made on lump sum items (L.S.). |
| 3. Payment will be made at the contract lump sum price (L.S.). |
| C. Contract Line Item No. 3: Erosion Control/Oil Seepage Control & Water Testing. |
| 1. This item consists of activities required to protect water quality. |
| 2. No separate measurement will be made on lump sum items (L.S.). |
| 3. Payment will be made at the contract lump sum price (L.S.). |
| D. Contract Line Item No. 4: Tree Removal (12” and Smaller). |
| 1. This item consists of all site clearing and tree removal along the towpath for trees 12” in diameter and smaller including stump removal, roots, obstructions, debris and backfilling as indicated in drawing notes and specifications. Costs to remove ... |
| 2. Measurement for payment will be per tree removed. |
| 3. Payment will be made at the contract price per tree removed. |
| E. Contract Line Item No. 5: Tree Removal (13” or Larger). |
| 1. This item consists of all site clearing and tree removal along the towpath for trees 13” in diameter and larger including stump removal, roots, obstructions, debris and backfilling as indicated in drawing notes and specifications. |
| 2. Measurement for payment will be per tree removed. |
| 3. Payment will be made at the contract price per tree removed. |
| F. Contract Line Item No. 6: Site Clearing and Grubbing. |
| G. Contract Line Item No. 7: Towpath & Shoulder Excavation and Rough Grading |
| 1. This item consists of excavation, removal, stockpiling and re-use of suitable fill and placement of imported fill as required to prepare rough grade for towpath and shoulders per plans and details. Except for where wall reconstruction impacts towp... |
| 2. Measurement for payment will be per cubic yard. Measurement will be made using pre and post surveys, and the average end area method. |
| 3. Payment will be made at the contract price per cubic yard of installed and compacted material. |
| H. Contract Line Item No. 8: Wall Excavation. |
| 1. This item consists of excavation, removal and disposal or re-use of suitable fill as required behind existing, extended or reconstructed walls from top of wall to depth indicated per repair type. Includes suitable fill placement, grading and compac... |
| 2. Measurement for payment will be per cubic yard of material placed within the minimum dimensions required by the plans. Measurement will be made using pre and post surveys, and the average end area method. |
| 3. Payment will be made at the contract price per cubic yard of installed and compacted material. |
| I. Contract Line Item No. 9: Towpath. |
| 1. This item consists of construction of the towpath surface and base course including all geotextile placement. |
| 2. Measurement for payment will be per cubic yard installed and compacted material. |
| 3. Payment will be made at the contract price per cubic yard. |
| J. Contract Line Item No. 10: Topsoil and Seeding. |
| 1. This item consists of installation of topsoil and seeding for areas constructed to meet the design grades shown in the plans and specifications. Topsoil and seeding necessary to stabilize disturbed areas outside of the constructed areas should be a... |
| 2. Includes topsoil placement, finish grading and seeding. |
| 3. Measurement for payment will be per square yard of area topsoiled and seeded area per establishment described in specification section 329200 “SEEDING AND TOPSOIL.” |
| 4. Payment will be made at the contract price per square yard. |
| K. Contract Line Item No. 11: Culvert Replacement. |
| 1. This item consists of removal of existing 18” corrugated metal pipes, installation of 18” HDPE pipes including excavation, backfill, pipe bedding and compaction. The cost also includes modifications to existing stone headwalls and construction of n... |
| 2. Measurement for payment will be per linear foot of pipe installed. |
| 3. Payment will be made at the contract price per linear foot. |
| L. Contract Line Item No. 12: #57 Stone Backfill Behind Walls. |
| 1. This item consists of installation of #57 stone backfill behind existing, extended or reconstructed walls as indicated on the structural plans including all geotextile placement. Includes stone placement, grading and compaction. |
| 2. Measurement for payment will be per cubic yard of #57 stone installed in place within the minimum dimensions required by the plans (based on structural wall treatment schedule and details). |
| 3. Payment will be made at the contract price per cubic yard. |
| M. Contract Line Item No. 13: Repair Existing Dry-laid Stone Walls: Resetting Loose Stones at Top of Wall and Stone Infill. |
| 1. This item consists of performing repairs to existing dry-laid stone walls: resetting loose stones at top of wall and providing stone infill for voids larger than 0.5 SF that cannot be filled with typical re-chinking stone. The intent of this item i... |
| 2. Measurement for payment will be per square foot of surface area which have had voids infilled with associated re-chinking or stones reset at the top of existing dry-laid walls to remain after all wall repairs for that section of wall have been revi... |
| 3. Payment will be made at the contract price per square foot of wall properly infilled or reset with associated re-chinking after passing Inspection. |
| N. Contract Line Item No. 13A: Repair Existing Dry-laid Stone Walls: Re-Chinking Loose Existing Stones. |
| 1. This item consists of performing repairs to existing dry-laid stone walls: re-chinking existing wall to stabilize loose stones in-place within existing wall. Repairs accounted for in this item will be located in the approved wall treatment shop dra... |
| 2. Measurement for payment will be per square foot of gross surface area of existing dry-laid walls to remain after all wall repairs for that section of wall have been reviewed and approved per project specifications. Measurements will occur on the pl... |
| 3. Payment will be made at the contract price per square foot of wall properly re-chinked after passing Inspection. |
| O. Contract Line Item No. 14: Reconstruct Existing Stone Walls (Salvaged Stone). |
| 1. This item consists of reconstructing existing dry-laid & mortared walls along the river using stone salvaged from the walls or areas directly adjacent to the work area. |
| 2. Measurement for payment will be per cubic foot of wall reconstructed within the minimum dimensions specified in the plans. |
| 3. Payment will be made at the contract price per cubic foot. |
| P. Contract Line Item No. 15: Reconstruct Existing Stone Walls (New Stone). |
| 1. This item consists of reconstructing existing dry-laid & mortared walls along the river using new stone that meets the requirements of the specifications sourced from off-site. |
| 2. Measurement for payment will be per cubic foot of wall reconstructed |
| 3. Payment will be made at the contract price per cubic foot within the minimum dimensions specified in the plans. |
| Q. Contract Line Item No. 16: Extend Existing Dry-laid Stone Walls. |
| 1. This item consists of constructing a dry-laid vertical extension on top of existing dry-laid stone wall along the river. |
| 2. Measurement for payment will be per cubic foot of wall extension. |
| 3. Payment will be made at the contract price per cubic foot. |
| R. Contract Line Item No. 17: Extend Existing Mortared Stone Walls. |
| 1. This item consists of construction of a mortared vertical extension on top of existing mortared stone wall along the river. |
| 2. Measurement for payment will be per cubic foot of wall extension. |
| 3. Payment will be made at the contract price per cubic foot. |
| S. Contract Line Item No. 18: Repair Existing Mortared Stone Walls. |
| 1. This item consists of repointing and/or setting stone with mortar to match existing mortared stone walls along the river. This includes resetting loose stones at top of existing walls in a bed of mortar, and infilling voids within existing walls wi... |
| 2. Measurement for payment will be per square foot of repaired surface area after all wall repairs for that section of wall have been reviewed and approved per project specifications. Measurements will occur on the plane of the exposed face of the wa... |
| a. Resetting loose stones at top of wall in mortar. Repaired area measured along top of wall and width of wall for resetting of existing coping stones. Area of stones reset below coping stones shall be measured along exposed wall surface to include ar... |
| b. Infilling voids within existing walls with stones and mortar. Repaired area measured from extent of new mortar surrounding infill stones along exposed wall surface. |
| c. Repointing directly adjacent to the reset or infilled stones will be incidental to the pay item. |
3. Payment will be made at the contract price per square foot of repaired wall surface area after passing Inspection.
| 3.2 BID OPTIONS |
| A. Contract Line Item No. 19: Bid Option A – Station 0+00 to 4+00 – Temporary Controls for Option A |
| 1. This item consists of furnishing, installing, and removing all temporary controls necessary to provide safe access to the work site and to secure the work site, including staging areas, installation and removal of temporary erosion and sedimentatio... |
| 2. Measurement for payment will be lump sum or percentage complete of line item per schedule of values. |
| 3. Payment will be made at the contract lump sum price. |
| B. Contract Line Item No. 20: Tree Removal (12” and Smaller) for Option A. |
| 1. This item consists of all site clearing and tree removal along the towpath for trees 12” in diameter and smaller including stump removal, roots, obstructions, debris and backfilling as indicated in drawing notes and specifications. Costs to remove ... |
| 2. Measurement for payment will be per tree removed. |
| 3. Payment will be made at the contract price per tree removed. |
| C. Contract Line Item No. 21: Tree Removal (13” or Larger) for Option A. |
| 1. This item consists of all site clearing and tree removal along the towpath for trees 13” in diameter and larger including stump removal, roots, obstructions, debris and backfilling as indicated in drawing notes and specifications. |
| 2. Measurement for payment will be per tree removed. |
| 3. Payment will be made at the contract price per tree removed. |
| D. Contract Line Item No. 22: Site Clearing and Grubbing for Option A. |
| 1. This item consists of all site clearing and grubbing as indicated in drawing notes and specifications. Costs to remove trees with a Diameter at Breast Height (DBH) of 4” or less will be considered to be within this item. |
| 2. Includes existing tree limbing and pruning as indicated on the drawings and directed by CO. |
| 3. No separate measurement will be made on lump sum items (L.S.). |
| 4. Payment will be made at the contract lump sum price (L.S.) |
| E. Contract Line Item No. 23: Towpath & Shoulder Excavation and Rough Grading for Option A. |
| 1. This item consists of excavation, removal, stockpiling and re-use of suitable fill and placement of imported fill as required to prepare rough grade for towpath and shoulders per plans and details. Except for where wall reconstruction impacts towpa... |
| 2. Measurement for payment will be per cubic yard. Measurement will be made using pre and post surveys, and the average end area method. |
| 3. Payment will be made at the contract price per cubic yard of installed and compacted material. |
| F. Contract Line Item No. 24: Wall Excavation for Option A. |
| 1. This item consists of excavation, removal and disposal or re-use of suitable fill as required behind existing, extended or reconstructed walls from top of wall to depth indicated per repair type. Includes suitable fill placement, grading and compac... |
| 2. Measurement for payment will be per cubic yard of material placed within the minimum dimensions required by the plans. Measurement will be made using pre and post surveys, and the average end area method. |
| 3. Payment will be made at the contract price per cubic yard of installed and compacted material. |
| G. Contract Line Item No. 25: Towpath for Option A. |
| 1. This item consists of construction of the towpath surface and base course including all geotextile placement. |
| 2. Measurement for payment will be per cubic yard installed and compacted material. |
| 3. Payment will be made at the contract price per cubic yard. |
| H. Contract Line Item No. 26: Topsoil and Seeding for Option A. |
| 1. This item consists of installation of topsoil and seeding for areas constructed to meet the design grades shown in the plans and specifications. Topsoil and seeding necessary to stabilize disturbed areas outside of the constructed areas should be a... |
| 2. Includes topsoil placement, finish grading and seeding. |
| 1. Measurement for payment will be per square yard of area topsoiled and seeded area per establishment described in specification section 329200 “SEEDING AND TOPSOIL.” |
| 2. Payment will be made at the contract price per square yard. |
| I. Contract Line Item No. 27: #57 Stone Backfill Behind Walls for Option A. |
| 1. This item consists of installation of #57 stone backfill behind existing, extended or reconstructed walls as indicated on the structural plans including all geotextile placement. Includes stone placement, grading and compaction. |
| 2. Measurement for payment will be per cubic yard of #57 stone installed in place. |
| 3. Payment will be made at the contract price per cubic yard. |
| J. Contract Line Item No. 28: Repair Existing Dry-laid Stone Walls for Option A. |
| 1. This item consists of performing repairs to existing dry-laid stone walls: re-chinking existing wall to stabilize loose stones in-place within existing wall, resetting loose stones at top of wall, and providing stone infill for voids. Repairs accou... |
| 2. Measurement for payment will be per square foot of repaired surface area after all wall repairs for that section of wall have been reviewed and approved per project specifications. Measurements will occur on the plane of the exposed face of wall. E... |
| 3. Payment will be made at the contract price per square foot of wall properly repaired after passing Inspection. |
| K. Contract Line Item No. 29: Reconstruct Existing Stone Walls for Option A (Salvaged Stone). |
| 1. This item consists of reconstructing existing dry-laid & mortared walls along the river using stone salvaged from the walls or areas directly adjacent to the work area. |
| 2. Measurement for payment will be per cubic foot of wall reconstructed |
| 3. Payment will be made at the contract price per cubic foot within the minimum dimensions specified in the plans. |
| L. Contract Line Item No. 30: Reconstruct Existing Stone Walls for Option A (New Stone). |
| 1. This item consists of reconstructing existing dry-laid & mortared walls along the river using new stone that meets the requirements of the specifications sourced from off-site. |
| 2. Measurement for payment will be per cubic foot of wall reconstructed |
| 3. Payment will be made at the contract price per cubic foot within the minimum dimensions specified in the plans. |
| M. Contract Line Item No. 31: Bid Option B – Station 28+00 to 38+50 - Reconstruct/Stabilize Historic Stone Wall & Towpath Temporary Controls for Option B. |
| 1. This item consists of furnishing, installing, and removing all temporary controls necessary to provide safe access to the work site and to secure the work site, including staging areas, installation and removal of temporary erosion and sedimentatio... |
| 2. Measurement for payment will be lump sum or percentage complete of line item per schedule of values. |
| 3. Payment will be made at the contract lump sum price. |
| N. Contract Line Item No. 32: Tree Removal (12” and Smaller) for Option B. |
| 1. This item consists of all site clearing and tree removal along the towpath for trees 12” in diameter and smaller including stump removal, roots, obstructions, debris and backfilling as indicated in drawing notes and specifications. Costs to remove ... |
| 2. Measurement for payment will be per tree removed. |
| 3. Payment will be made at the contract price per tree removed. |
| O. Contract Line Item No. 33: Tree Removal (13” or Larger) for Option B. |
| 1. This item consists of all site clearing and tree removal along the towpath for trees 13” in diameter and larger including stump removal, roots, obstructions, debris and backfilling as indicated in drawing notes and specifications. |
| 2. Measurement for payment will be per tree removed. |
| 3. Payment will be made at the contract price per tree removed. |
| P. Contract Line Item No. 34: Site Clearing and Grubbing for Option B. |
| 1. This item consists of all site clearing and grubbing as indicated in drawing notes and specifications. Costs to remove trees with a Diameter at Breast Height (DBH) of 4” or less will be considered to be within this item. |
| 2. Includes existing tree limbing and pruning as indicated on the drawings and directed by CO. |
| 3. No separate measurement will be made on lump sum items (L.S.). |
| 4. Payment will be made at the contract lump sum price (L.S.) |
| Q. Contract Line Item No. 35: Towpath & Shoulder Excavation and Rough Grading for Option B |
| 1. This item consists of excavation, removal, stockpiling and re-use of suitable fill and placement of imported fill as required to prepare rough grade for towpath and shoulders per plans and details. Includes fill placement, grading and compaction f... |
| 2. Measurement for payment will be per cubic yard. Measurement will be made using pre and post surveys, and the average end area method. |
| 3. Payment will be made at the contract price per cubic yard of installed and compacted material. |
| R. Contract Line Item No. 36: Towpath for Option B. |
| 1. This item consists of construction of the towpath surface and base course including all geotextile placement. |
| 2. Measurement for payment will be per cubic yard installed and compacted material. |
| 3. Payment will be made at the contract price per cubic yard. |
| S. Contract Line Item No. 37: Topsoil and Seeding for Option B. |
| 1. This item consists of installation of topsoil and seeding for areas constructed to meet the design grades shown in the plans and specifications. Topsoil and seeding necessary to stabilize disturbed areas outside of the constructed areas should be a... |
| 2. Includes topsoil placement, finish grading and seeding. |
| 3. Measurement for payment will be per square yard of area topsoiled and seeded area per establishment described in specification section 329200 “SEEDING AND TOPSOIL.” |
| 4. Payment will be made at the contract price per square yard. |
| T. Contract Line Item No. 38: Culvert Replacement for Option B. |
| 1. This item consists of removal of existing 18” corrugated metal pipes, installation of 18” HDPE pipes including excavation, backfill, pipe bedding and compaction. The cost also includes modifications to existing stone headwalls and construction of n... |
| 2. Measurement for payment will be per linear foot of pipe installed. |
| 3. Payment will be made at the contract price per linear foot. |
| U. Contract Line Item No. 39: Repair Existing Laid-Back Stone Revetment for Option B. |
| 1. This item consists of performing repairs to existing stone revetments along the river: providing stone infill for voids and securing the stone infill with associated re-chinking. Repairs accounted for in this item will be field located at the direc... |
| 2. Measurement for payment will be per square foot of repaired surface area after all repairs for that section of revetment have been reviewed and approved per project specifications. Measurements will occur on the plane of the exposed face of revetme... |
| 3. Payment will be made at the contract price per square foot of revetment properly repaired after passing Inspection. |
| V. Contract Line Item No. 40: Bid Option C – Station 38+50 to 51+75 - Reconstruct/Stabilize Historic Towpath |
| 1. This item consists of all labor and materials required to reconstruct/stabilize Historic Towpath from Station 38+50 to Station 51+75 per the drawings and specifications. This includes, but not limited to, establishing temporary controls, removing t... |
| 2. Measurement for payment will be lump sum or percentage complete of line item per schedule of values. |
| 3. Payment will be made at the contract lump sum price. |
| W. Contract Line Item No. 41: Bid Option D – Widen Towpath Trail to 8’ |
| 1. This item consists of all labor and materials required to widen the towpath trail to 8’ at locations shown on the plans per the drawings and specifications. |
| 2. Measurement for payment will be lump sum or percentage complete of line item per schedule of values. |
| 3. Payment will be made at the contract lump sum price. |
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