Piedmont Triad Regional Council Invitation for Bids (IFB)

IFB# 012026-319

May 8th 2026

ADDENDUM #3

The intent of this addendum is to provide additional information to include responses to submitted questions as well as provide attention to any changes.

ATTENTION: Please print, sign and attach addenda (1, 2, and 3) with your submitted bid application

Final Extension: BIDS DUE Friday May 15th at 12:00 Noon

Q: Are there existing survey control points?

A: No

Q: Are there any permits the contractor is responsible for obtaining? Who's responsible for obtaining the E&SC Permit and COC?

A: All required permits have been obtained. Certificate of Plan Approval has been obtained, and COC will be acquired by the Town and Engineer once project timeline has been finalized.

Q: Is there any flow data (CFM) available for Hasketts Creek?

A: There are no actively monitored stream gauges on Hasketts Creek. The watershed is 3 sq miles. Engineer’s estimate the baseflow is 3 cfs - 5 cfs.

Q: Can you provide the bid sheet in Excel format?

A: Feel free to make your own- similar to what is provided on bid doc.

Q: The construction specifications state that the engineer reserves the right to add or delete quantities at any time without adjustment to the unit price. Since all units are listed on the bid form as lump sum, it would seem this doesn't apply to this project, and that a change order would be required for any adjustments. Please confirm.

A: Confirmed. This specification is meant for unit prices and will not be applicable to this lump sum award. A change order would be required if there are changes in the scope of the project.

Q: Where are the riparian buffer barrier boulders captured in the bid form? What size are these boulders?

A: The boulders were captured in the engineering estimate of boulders on the bid form. These are small boulders. All quantity estimates are provided as a convenience, but the contractor is responsible for verifying estimates.

Q: Can pelletized calcidic lime be applied instead of agricultural lime, and at a rate of 200- 250 lbs/ac?

A: Yes

Q: Please provide a detail for the concrete pad under the cisterns.

A: No additional rebar reinforcement is required for the concrete pads. Concrete pads will be 0.5 ft deep and have a square shape offset 0.5 ft from the diameter of the cistern. This item and methods may be field adjusted between the contractor and engineer as needed.

Q: Will unit prices be used for change orders if actual quantities vary from engineer estimates?

A: Engineer estimates are provided as a convenience for each line item. The contractor is responsible for verifying quantities and providing a lump sum bid that would cover the execution of each line item. Change orders will only be issued for changes to the design that are outside the current scope and will be negotiated separately.

Q: Is it acceptable to submit a narrative to detail clarifications and assumptions made by the contractor to aid in selection process? Or would this be grounds for disqualification?

A: An additional paragraph or two are fine just as long as you do not exceed the page limit.

Q: Is there anywhere recommended by the City of Asheboro that needs fill dirt?

A: TBD- once project starts

Q: Is the HDPE pipe for the Pocket Wetland Outlet Culvert expected to be smooth or corrugated?

A: HDPE pipe for pocket wetland outlet culverts should be smooth walled. 6” PVC piping would also be acceptable.

Q: Vegetation Removal is suppose to include invasive species removal but states that this cannot be done by mechanical methods, can this be changed?

a. Should additional invasive species treatments be considered in the plantings?

A: Mechanical methods are acceptable, but without the use of heavy machinery or grading. Mowing/Tilling would be fine. There are no requirements for additional invasive species treatments.

Q: Will there be additional costs (incidental to excavation) for supervision from the power company while working within their buffers?

A: Please review the LONO document to understand the limitations for work and safety requirements for working within the buffer and around electrical lines. There will be no additional cost for supervision from Duke Energy during construction. If desired, a pre-construction meeting can be scheduled with the Duke Energy representative.

Q: Wetland cells are typically left considerably rough, with variance greater than the +/-0.1, is this acceptable?

A: Micro topography across wetland bottoms that exceeds the 0.1ft variance will be acceptable. Outlet elevations, tops of berms, and spillways will be required to meet the +/- 0.1ft variance limit. The Project Engineers anticipate being on-site to assist with this process.

Q: Dewatering of the site due to ponding, specification page 21, paragraph A. subsection J.

can more detail be given to the extents contractor will be held?

A: This would pertain to areas outside of defined grading limits that are significantly altered by the tracking of equipment or installation of soil and erosion control measures. It is expected that these areas would be returned to pre-existing conditions. Areas that experience nuisance ponding in existing conditions that are not within defined grading limits are not within this scope and do not need to be corrected by the contractor.

Q: Concrete submittals are for precast concrete, will there be concrete submittal requirements for cast in place slabs for cisterns, i.e mix designs, testing, etc?

A: No submittals will be required for cast-in-place slabs for cisterns.

Q: Who should the bid bond be addressed to?

A: PTRC

Q: Is there flexibility with pushing the bid date back?

A: Final Extension May 15th @ 12 noon.

Q: Is there a budget for this project?

A: Two grants have been awarded for this entire project.One in the amount of $305,000 and another for the amount of $275,000. These totals include costs for project admin and design.

Q: Who is the City of Asheboro contact for approving scheduling and park partial closures for construction?

A: Park interruptions should be minimized at most; Parks Director will be the Point of Contact. Jonathan Sermon - 336-626-1240 Ext 2803

Q: Is the bid information related to unit price or lump sum?

A: Bid amount will be one lump sum, however bid documents have a column for the quantity estimate for each item. Unit prices are for convenience and comparison purposes only.

Q: Is there priority of items within the design for wetlands or stream?

Q: Can you speak more on the abandoned sewer pipe?

A: Yes there is an abandoned pipe at approximately station 1+50. It is a concrete pipe.

Just that section of pipe within the streambed and streambank would need to be removed in order to complete required grading in this area. It is already broken within the streambed.

Q: For the abandoned pipe- is the detail 66 inch associated with that as well? Seal up the existing pipe to be removed?

A: Ends of the abandoned sanitary sewer pipe may be backfilled and compacted.

Detail 14/D4 is associated with the 66” RCP for Wetland #1.

Q: Are there any time of year restrictions for working within the stream? A bat moratorium?

Q: Contract states end date of June 2027- does that include plantings?

A: Yes

Q: There is language within the construction documents providing covered passageways for residents in the park?

A: This will not be necessary. The greenway would be shutdown with no pedestrians within the construction areas.

Q: Delivery tickets for stone. What if those tickets do not match the bid documents?

A: Construction specifications were updated to reflect this.

“The Contractor shall provide the following documentation to the Engineer.

2. Copies of the delivery tickets (“truck ticket”) or other acceptable receipts as evidence for materials received that will be incorporated into construction.”

This requirement has been removed as the project will be rewarded as a lump sum.

The contractor should still keep this documentation for their records.

Q: Can small boulders be captured in the bid document?

Q: Are you (Kris Bass Engineering) handling the As Built Survey?

A: Yes. No official As-Built is required for the project. KBE will be checking final elevations and structures placements during construction oversight.

Q: Will you release CAD to awarded contractor?

Q: Wetland outlet devices? Is there a manufactured orifice preferred?

A: Can be a hole drilled into PVC to the dimensions defined in Detail 13/D4 in the Construction Plan Set

Q: Does any excess excavation need to be hauled off site?

A: Yes, everything needs to be removed

Q: Is a performance payment required with the bid bond?

A: No- but a performance payment would be required for contracting

Q: Is a CCTV required for utilities?

A: Asheboro does not require a video survey for existing utilities. See GS-1.13 and TS-

1.6 in Construction Specifications

Q: Is the bid opening open to the public?

A: Yes, it will take place here at PTRC

NOTE: Attached is the updated Construction Specs with removed requirements for Truck Tickets and the LONO from Duke, with all requirements listed for working within the Duke Easement.

North Asheboro Park SCM & Stream Restoration

Construction Specifications

Updated per Addendum #2

April 2026

Kris Bass Engineering

219 E. Chatham St. Ste 205

Cary, NC 27511

Table of Contents Project Description

Project Engineer:

General Construction Sequence

General Project Specifications

GS-1 GENERAL PROVISIONS

1.0 Specifications References

2.0 Project Schedule

3.0 Construction Progress

4.0 Bid Quantities

5.0 Work Force

6.0 Work Restrictions

7.0 Pre-Construction Conference

8.0 Traffic Control and Site Access

9.0 Safety

10.0 Existing Conditions

11.0 Delivery and Acceptance of Materials

12.0 Storage of Materials

13.0 Existing Utilities and Utility Conflicts

14.0 Continuous Clean Up and Restoration

15.0 Surveying and Construction Staking

16.0 Disposal of Material

17.0 Final Cleanup and Final Pay Request

18.0 Insurance

Project Technical Specifications

TS-1 SITE PREPARATION

1.0 Mobilization and Demobilization

2.0 Safety Fencing

3.0 Selective Tree Removal

4.0 Disc Golf Course Alterations

5.0 Vegetation Removal

6.0 Existing Infrastructure Protection and Removal

TS-2 EROSION CONTROL

1.0 General

2.0 Temporary Silt Fence and Outlets

3.0 Filter Fabric

4.0 Temporary Rock Check Dam

5.0 Control of Water

6.0 Construction Entrance

7.0 Erosion Control Matting

8.0 Seeding

TS-3 EARTHWORK

1.0 General Grading

TS-4 STONE

1.0 General

2.0 Stone Material

3.0 Stabilization Features

TS-5 IN-STREAM STRUCTURES

1.0 General

TS-6 PLANTING

1.0 General

2.0 Plug Planting

3.0 Tree and Shrub Planting

4.0 Live Stake Planting

5.0 Native Seed Mix

TS-7 CONCRETE

1.0 General

TS-8 PIPE

1.0 General

2.0 Outlet Pipe Retrofit

TS-9 CISTERNS & PLUMBING

1.0 General

Project Description This project is located at North Asheboro County Park in Randolph County, NC. This project will implement stormwater infrastructure throughout the park and restore a portion of Hasketts Creek, which runs through the park's center.

The stormwater features to be constructed include three pocket wetlands, three water quality swales, two cisterns, a stormwater outfall stabilization, a vernal pool construction and tributary enhancement, and an enhancement of an existing wetland area.

The stream restoration will include 700 linear feet of Hasketts Creek within the park property. The stream work will consist of the construction of riffles and pools, the installation of stone and boulder toes, vegetated geolifts, a cross-vane feature, and the establishment of a 50-ft riparian buffer.

Project Engineer:

Carmen Tormey, PE

Kris Bass Engineering

C: (919) 757-5413

E: ctormey@kbeng.org

Kris Bass, PE

C: (919) 960-1552

E: kbass@kbeng.org

General Construction Sequence

1. An erosion and sediment control (E&SC) Permit and certificate of coverage (COC) must be obtained before any land disturbing activities can occur.

2. Contact the DEMLR Regional office at least 48 hours before commencing land disturbing activity. The contact number is (336) 776-9800.

3. Install all temporary erosion and sediment control measures, the construction entrance, and fencing as called for on the plans. Limit clearing and land disturbing activity to the area necessary to install the permitted measures.

4. Schedule an initial site inspection and pre-construction conference with the Project Engineer.

5. Upon approval of the initial site inspection, commence land disturbing activity.

6. Perform clearing, grubbing, and debris removal as shown on the construction plans.

7. Perform all excavation and grading tasks as shown on the plans.

8. Plant the stormwater devices according to the planting plan.

9. Install woody vegetation as called for on the planting plan.

10. Seed and mulch all disturbed non-paved areas per the approved plans and specifications.

11. Once grading is complete and the site is stabilized, request an as-built inspection as needed and obtain approval to remove temporary measures. Do not remove temporary measures without prior stormwater inspector approval.

12. Once grading is complete, temporary measures are removed, and the site is stabilized, schedule a stormwater final site inspection with DEMLR.

13. After DEMLR informs the permittee of the project close-out, via inspection report, the permittee shall visit deq.nc.gov/ncg01 to submit an electronic notice of terminations (E-NOT).

General Project Specifications North Asheboro Park SCM Retrofits & Stream Restoration

GS-1 GENERAL PROVISIONS

1.0 Specifications References

Technical Specifications: North Carolina Department of Transportation “Standard Specifications for

Roads and Structures” shall apply where appropriate, except as modified in this contract. The NCDOT

Standard Specifications may be downloaded at:

https://connect.ncdot.gov/resources/Specifications/StandSpecLibrary/2018%20Standard%20Specification s%20for%20Roads%20and%20Structures.pdf

Erosion Control Specifications: North Carolina Department of Environmental Quality “Erosion and

Sediment Control Planning and Design Manual” shall apply where appropriate, except as modified in this contract. The NCDEQ Erosion and Sediment Control Planning and Design Manual can be downloaded at:

https://deq.nc.gov/about/divisions/energy-mineral-land-resources/energy-mineral-land-permit-guidance/erosion-sediment-control-planning-design-manual

The contractor shall comply with all Local Municipality, County, State, and Federal regulations.

2.0 Project Schedule

The Contractor shall provide the proposed project schedule within 30 days of the project start, with monthly updates if schedule changes. The City of Asheboro will review and approve the proposed schedule before it is finalized to ensure it does not conflict with other scheduled activities on the Park property.

3.0 Construction Progress

The Contractor shall submit monthly site photographs to the Engineer. The photographs should include time stamps and images of relevant work, including but not limited to demolition, grading, retaining walls, excavation, aggregate install, media install, seeding, and planting.

4.0 Bid Quantities

The itemized Bid Quantities are the engineer’s estimate and are used for comparing bids. All quantities are the Designer’s estimate. It is the contractor's responsibility to determine and verify all bid quantities.

The Engineer maintains the right to add or delete quantities at any time, without an adjustment to the unit price. There shall be no unit price adjustment for materials due to market variability. For lump sum items, a Change Order applies only to modifications in the scope of work and shall not be adjusted based on quantity take-off.

5.0 Work Force

Contractor shall be licensed with the State of North Carolina as a General Contractor, plus any specialty work performed by the Contractor and/or subcontractor shall be performed by a Contractor licensed in the respective specialty.

The Contractor shall have a superintendent authorized to direct work crews always present on the job site.

Upon start of construction, the Contractor shall provide the Project Contact with names and telephone numbers of Superintendent(s) and two people to be contacted after office hours in case of emergency.

https://connect.ncdot.gov/resources/Specifications/StandSpecLibrary/2018%20Standard%20Specifications%20for%20Roads%20and%20Structures.pdf https://connect.ncdot.gov/resources/Specifications/StandSpecLibrary/2018%20Standard%20Specifications%20for%20Roads%20and%20Structures.pdf https://deq.nc.gov/about/divisions/energy-mineral-land-resources/energy-mineral-land-permit-guidance/erosion-sediment-control-planning-design-manual https://deq.nc.gov/about/divisions/energy-mineral-land-resources/energy-mineral-land-permit-guidance/erosion-sediment-control-planning-design-manual

6.0 Work Restrictions

The contractor shall comply with the following restrictions on construction operations:

a) Comply with restrictions on use of public streets, work on public streets, right-of-way, and other requirements of authorities having jurisdiction.

b) On-site Work Hours: Limit work in the Park to normal working business hours of 7 a.m. to 5 p.m., Monday through Friday, unless the Contractor receives the City’s written permission outside of this agreement.

c) The Contractor shall submit requests for work outside of these restrictions to the Project Engineer in writing at least 5 business days before the day of the requested change. Requests submitted do not guarantee approval of the requests.

7.0 Pre-Construction Conference

Upon the approval of the initial site inspection of the installed temporary erosion control measures, it will be the Contractor’s responsibility to contact the Project Engineer and set up a date agreeable to the Project

Engineer and Property Owner/City Project Contacts for the pre-construction conference. Failure to notify the Project Engineer will not release the Contractor of their responsibility, and no additional time will be allotted. No work shall be performed or material delivered to the job site until after the pre-construction conference.

8.0 Traffic Control and Site Access

The Contractor shall control operations and the operations of subcontractors and all suppliers to provide for the free and unobstructed movement of traffic in and out of the project areas, which have not been fenced off for the construction project.

When the work requires the Contractor to conduct operations in an area that disrupts access, the work shall be coordinated with the Project Contact and the Project Engineer at least 48 hours before commencement of such work.

Contractor shall make all efforts not to hinder the access and mobility of emergency vehicles.

All costs incurred for the traffic control on the site shall be included in the lump sum bid item for traffic control in the proposal. There will be no direct measurement of manhours for traffic control operations.

9.0 Safety

The Contractor shall comply with all State and Federal Regulations. The Contractor and sub-contractors shall comply at all times with the latest revisions of all OSHA regulations and all applicable labor laws and regulations of the state of North Carolina from Title 29 of the Code of Federal Regulations (CFR)

Part 1910.

Where the contractor fails to respond in a timely manner to the Project Engineer’s directives to complete certain repairs and/or work that, in the opinion of the Project Engineer, cause a safety hazard or the potential for damages, the Project Engineer may have such work performed and deduct the costs plus

25% from the Contractor’s pay request. This provision shall not, however, obligate the Project Engineer to undertake such work that is the responsibility of the Contractor.

10.0 Existing Conditions

The Contractor, in submitting a proposal and signing this Contract, acknowledges that they have thoroughly investigated the existing facilities, and have examined the plans and specifications, understanding clearly their requirements and the requirements necessary to construct all to completion;

that they are fully prepared to sustain all losses and damages incurred by the actions or elements; that they are prepared to provide all necessary tools, appliances, machinery, skilled and unskilled workmen, and all necessary materials to complete the work. Any damage to existing features resulting from the work of this contract shall be promptly repaired by the Contractor, in a manner approved by the Project Engineer, at no additional cost to the Owner. The Contractor shall make a thorough inspection of the project before bidding and base their bid upon the conditions existing as of the project bid opening date.

Contractor shall take precautions to avoid damage to existing pavement and concrete. Whenever pavement or other physical features outside of the construction limits, but in proximity to the project, become damaged, the Contractor is assumed responsible for such damages unless evidence is presented to the contrary. The Contractor shall be responsible for the repair of such to a state acceptable by the

Engineer at no additional cost to the Owner.

The Contractor shall accept actual conditions at the site and perform the work specified without additional compensation for possible variation from grades and conditions shown, whether surface or subsurface, except as provided for by the contract documents.

11.0 Delivery and Acceptance of Materials

Upon request of the Engineer, the Contractor shall make available all documentation about the origin, manufacturing, job mix formula, or delivery of materials to the job-site. All necessary documentation, whether original or signed, must be provided legibly and thoroughly to complete quantity verification and may include, but not be limited to, shipping receipts, trucking delivery tickets, plant or quarry tickets, manufacturers' certification, Buy America, shop drawings, etc. This may pertain to deliveries of asphalt, concrete, stone, soils, mulch, castings, pipe, landscaping, seed, etc.

The Engineer may reject inspected items that do not meet the requirements of the specifications or

Drawings. All rejected material shall be replaced at no additional cost to the Owner. No separate payment will be made for this work, associated coordination time, and all associated costs, as it will be considered incidental to other items in the contract.

12.0 Storage of Materials

Staging locations of materials shall be within the permitted Limits of Disturbance. Downslope areas of stored cut and fill material shall be protected with silt fence, as applicable and as seen fit by the contractor. At the end of the project, parking lot areas shall be left clean and free of debris, and all other areas shall be fine-graded and seeded. This cost is incidental to the project.

Staging and material storage is limited to areas identified on the construction plan set.

13.0 Existing Utilities and Utility Conflicts

Before submitting their bid, the Contractor shall make their own determination as to the nature and extent of the utility facilities. The Contractor shall consider in their bid all the permanent and temporary utility facilities in their present or relocated positions, whether or not specifically shown in the plans or covered in the project special provisions. It will be the Contractor's responsibility to anticipate any additional costs resulting from such utility work and to reflect these costs in their bid for the various items in the contract.

Existing fire hydrants shall be kept accessible to fire departments at all times.

The Contractor shall adhere to all applicable regulations and follow accepted safety procedures when working in the vicinity of utilities to ensure the safety of construction personnel and the public. The

Contractor shall use the necessary precautions to protect existing water, sewer, gas, telephone, and storm drainage lines, etc., and service laterals during construction. The cost of protecting such lines and services shall be considered incidental to the project, and no additional payment will be allowed.

The Contractor shall call the “Call Before You Dig” toll-free number to make sure that all utilities are located and marked. Any damage to existing utilities is the responsibility of the Contractor.

14.0 Continuous Clean Up and Restoration

The Contractor, during their work, shall maintain and clean up the construction area, including but not limited to removal of all debris, excess concrete, fabric packaging, replacement or restoration of damaged infrastructure, public safety items, excess soil, and miscellaneous items. The Contractor shall make the work area safe at the end of each day.

No extra payment will be allowed for the items reset/ removed/ replaced. The cost of restoration shall be included in the lump sum bid for each item in the proposal.

15.0 Surveying and Construction Staking

All staking shall be performed under the direct supervision of a Land Surveyor licensed by the State of

North Carolina and shall conform to the NC DOT Manual for Construction Layout. All construction surveying shall be staked from the same monument used in the design. The contractor shall furnish all labor, materials, testing, submittals, tools, and equipment necessary to perform all construction layout, control, quantity, and reference staking for satisfactory completion of the project.

16.0 Disposal of Material

Construction debris, excavated material, and all materials to be disposed of shall be so placed as not to unreasonably interfere with travel. Unless otherwise specified, all materials left over shall become the property of the Contractor. Also, underground structures removed, such as brick, concrete, pipe, etc., shall become the property of the Contractor, unless otherwise noted on the plans or in the Special Provisions.

If the Contractor shall fail to promptly remove surplus material, the Project Engineer may have the material removed and charge the cost thereof as money paid to the Contractor. All surplus excavation shall be removed from the site of the work by the Contractor, but none shall be deposited on private property until written consent of the property owner has been filed with the Engineer. Contractor's disposal shall comply with all Federal, State, and local laws and regulations. Burning of debris, brought on-site or resulting from the demolition, will not be permitted at this site.

The cost of disposal of all materials shall be included in the lump sum bid for each item in the proposal.

No extra payment will be allowed for this item.

17.0 Final Cleanup and Final Pay Request

The contractor shall clear all streets, driveways, parking areas, and other contract items of all dirt and debris before the final inspection is made. The Project Engineer will not inspect the improved areas until they are cleaned. Failure by the Project Engineer to perform a final inspection if the areas are not cleaned shall not relieve the contractor of any liquidated damages. No extra payment will be allowed for this cleaning. The cost of the cleaning shall be included in each item bid in the proposal. Final pay request may be made only after all punch list items have been completed and accepted by the Project Engineer and Property Owner.

18.0 Insurance

The Project contractor and sub-contractors shall maintain from a company or companies lawfully authorized to do business in North Carolina, insurance for protection from claims under workers’ compensation act and other employee benefit acts which are applicable, claims for damages because of bodily injury, including death, claims for damages to property which may arise out of or result from the operations under this construction contract and/or project work, and Automobile Bodily Injury and

Property Damage Insurance for any owned or leased vehicles or equipment moving under their own power and engaged in the use of North Asheboro Park, together with the driveways and parking lots located within North Asheboro Park for ingress or egress to and from North Asheboro Park or the

Temporary Construction Right of Entry Area for the performance of Design Permitted Activities

(including, but not limited to, any repair and restoration activities described in the construction plan set) or Construction Permitted Activities, respectively, including, but not limited to, the construction of the

Project SCM retrofits, Stream Restoration and the grading, stabilization, and restoration of the Temporary

Construction Right of Entry Area upon completion of construction on the Project.

The insurance policies shall be written for not less than the limits of liability specified on Exhibit A, attached below, or required by law, whichever coverage is greater. The City shall be listed as additional insured on all such policies except for workers’ compensation and professional liability. The Construction

Licensed Parties shall not commence use of North Asheboro Park and/or the Temporary Construction

Entrance, or the driveways and parking lots located within North Asheboro Park for ingress or egress to and from North Asheboro Park or the Temporary Construction Entrance for the performance of Design

Permitted Activities and/or Construction Permitted Activities, respectively, including, but not limited to, the construction of the Project SCM retrofits, Stream Restoration, and the grading, stabilization, and restoration of the Temporary Construction Entrance upon completion of construction, until all required insurance coverages as described above have been obtained and confirming certificates of insurance have been delivered to the City.

Exhibit A

Insurance Requirements

1. Commercial General Liability Insurance in an amount no less than:

Each Occurrence: $1,000,000*

General Aggregate Limit: $2,000,000*

2. Worker’s Compensation Insurance in accordance with the laws of the State of North Carolina and

Employers Liability coverage with minimum limits:

Insurance: Minimum Amount

(a) Worker’s Compensation and Employer’s Liability: $1,000,000

(b) General Liability: $1,000,000 each occurrence

(c) Automobile Liability: $2,000,000 General Aggregate

(d) Umbrella: $1,000,000

(e) Professional Liability: $1,000,000

Project Technical Specifications North Asheboro Park SCM Retrofits & Stream Restoration

TS-1 SITE PREPARATION

1.0 Mobilization and Demobilization

Scope:

This will consist of mobilizing and demobilizing all the Contractor’s forces and equipment necessary to complete this project as stated under the contract. This will not include mobilization and demobilization of items for which payment is covered elsewhere in this contract. Mobilization shall also include the installation of an on-site inspection box to house a copy of all project documents and permits.

Basis of Payment:

All costs incurred for the mobilization and demobilization shall be included in the

“Mobilization/Demobilization” lump sum price bid in the proposal. There will be no direct measurement of materials for mobilization and demobilization.

2.0 Safety Fencing

Scope

Work under this section consists of furnishing all labor, materials, equipment, supplies, supervision, and tools, and performing work necessary for the installation of all safety fencing as indicated in the plans.

Safety fencing will be utilized to prevent access by unauthorized personnel to grading areas in the project area. Safety fencing will serve as tree protection and utility protection fencing in some areas of the project. Safety fencing will be installed in conjunction with all Erosion and Sediment Control Measures as described in section TS-2 during the initial site preparation.

Basis of Payment

All costs incurred for the installation and materials for Safety Fencing shall be included in the “Safety

Fencing” lump sum bid item on the proposal.

3.0 Selective Tree Removal

Scope

This will consist of the removal of all trees identified in the construction plans for removal. Work in this section includes, but is not limited to, the following:

a) Contractor’s method of tree removal shall avoid land disturbances outside the limits of disturbance shown on the Drawings.

b) No trees are to be removed within the tree protection fencing limits or outside the limits of disturbance as shown on the Drawings.

c) The Contractor shall grind stumps a minimum of 12 inches below grade. All protuberant surface and subsurface roots beyond the stump area, noticeable from visible inspection, shall be removed to a depth of 12 inches below grade. The remaining stump grindings shall be left in a uniformly graded pile within the limits of the stump grinding.

d) Fill required to bring the tree site grade up to adjacent existing ground elevations shall meet the satisfactory materials requirements of TS-3, Earthwork, and shall be considered incidental to stump and tree removal.

e) Contractor shall provide covered passageways where necessary to ensure safe passage of residents in or near areas of work.

f) Contractor shall provide substantial barricades and safety lights as required.

g) Remove materials in a manner that protects adjacent trees, shrubs, or other types of vegetation that are to remain growing, and prevent damage to adjacent property. Remove broken branches and rough edges of scarred trees or shrubs. Shape and make smooth these areas in accordance with generally accepted horticultural practice.

h) At the direction of the Engineer, cut and dispose of any plants that are damaged beyond their value, and seed and mulch vegetation that is damaged by the Contractor at no cost to the owner.

i) Remove debris, rubbish, and materials resulting from cutting or grinding operations.

j) Transport tree and root materials and legally dispose of off-site.

Basis of Payment:

All costs incurred for the selective tree removal shall be included in the “Tree Removal” lump sum price bid in the proposal. There will be no direct measurement of materials for tree removal.

4.0 Disc Golf Course Alterations

Scope

Work under this section consists of furnishing all labor, materials, equipment, supplies, supervision, and tools, and performing work necessary for the removal and reinstallation of disc golf course tee pads where indicated on the plans.

The contractor will be responsible for confirming final locations and dimensions of the relocated tee pads with the Asheboro Park and Recreation contact for the project before installation.

Basis of Payment:

All costs incurred for the Disc Golf Course Alterations shall be included in the “Disc Golf Course

Alterations” lump sum price bid in the proposal. There will be no direct measurement of materials for alterations.

5.0 Vegetation Removal

Scope:

Work under this section consists of furnishing all labor, equipment, and tools, and performing work necessary for the vegetation removal at the Wetland Enhancement Area. This work will include removing overgrown and invasive or nuisance species from the planting area and preparing the area for the plantings proposed in the plans. This work will be completed without the use of heavy machinery.

Basis of Payment:

All costs incurred for the Vegetation Removal shall be included in the “Vegetation Removal” lump sum price bid in the proposal. There will be no direct measurement of materials for alterations.

6.0 Existing Infrastructure Protection and Removal

1. Access Path Matting

Scope:

Work under this section consists of furnishing all labor, materials, equipment, and supplies, and performing work necessary to protect existing infrastructure and utilities from damage from crossings with heavy equipment within the project Limits of Disturbance. Protections include, but are not limited to, sanitary sewer, stormwater culverts, and the greenway walking paths. The contractor shall identify and protect all necessary crossing areas with Access Path Matting as described in the plan details. This work shall include the protection of all above-ground manholes and headwalls from damage.

Basis of Payment:

All costs incurred for the Access Path Matting materials and installation will be included in the lump sum bid price for “Utility Protection - Access Path Matting” on the proposal.

2. Culvert Removals

Scope

Work under this section consists of furnishing all labor, materials, equipment, supplies, supervision, and tools, and performing work necessary for the removal of the Abandoned 15” Sanitary Sewer in Hasketts

Creek. The location of the culverts to be removed is shown in the plans. The culvert shall be removed to an extent to allow for the proposed grading. Culverts will be removed and disposed of properly off-site.

Basis of Payment:

All costs incurred for the culvert removals shall be included in the respective lump sum bid price for the

“15” Sanitary Sewer Removal” as listed in the proposal.

Excavation and backfilling for the culvert removals shall be considered incidental to the structures, and no separate payment will be made.

TS-2 EROSION CONTROL

1.0 General

Scope:

Work under this section consists of furnishing all labor, materials, equipment, supplies, supervision, tools, and performing all work necessary for the installation and maintenance of erosion and sedimentation control devices and facilities as may be necessary to conform to the plans, specifications, details, permits, local, state, and federal laws. The Contractor shall be responsible for providing and maintaining all erosion control measures as required to build the project as shown on the plans, as directed by the

Engineer, and as described in the NC Erosion and Sediment Control Planning and Design Manual. This includes the installation, inspection, and maintenance of all temporary measures, including silt fencing and outlets, temporary rock check dams, temporary construction entrance, and the control of water during construction.

The Contractor shall perform inspections of erosion and sedimentation control measures and stormwater discharge outfalls regularly to ensure compliance. Pictures should be taken with time stamps and be provided to the Engineer or Owner upon request.

Basis of Payment:

All costs incurred for the temporary erosion control measures installation, maintenance, and inspection will be included in the lump sum bid price of individual “E&SC” items as listed on the proposal.

2.0 Temporary Silt Fence and Outlets

Scope:

Work under this section consists of furnishing all labor, materials, equipment, supplies, supervision, and tools, and performing all work necessary for the installation of Temporary Silt Fencing and Silt Fence

Outlets as indicated on the plans.

All fabric and stone should adhere to the requirements defined in Section TS-2.3.0 Filter Fabric and TS-

4.2.0 Stone, respectively. Materials should include all necessary hardware to properly install and secure the silt fence as described in the project details.

Basis of Payment:

All costs incurred to complete the installation of silt fencing and outlets shall be included in the “E&SC -

Silt Fence & Outlets” lump sum bid price on the proposal.

All costs for filter fabric and other materials for silt fencing will be included in the “E&SC - Silt Fence &

Outlets” lump sum bid price on the proposal.

All costs for stone material for the silt fence outlets will be included in the respective “Stone” lump sum bid price on the proposal.

3.0 Filter Fabric

Scope:

Work under this section consists of furnishing all labor, materials, equipment, supplies, supervision, and tools, and performing all work necessary for the installation of filter fabric as shown on the plans and details.

All fabric to be used below rip rap and boulders will be a Type 2 nonwoven geotextile (see requirements below). All fabric for temporary silt fencing will be a Type 3 woven geotextile (see requirements below).

The fabric shall meet the material requirements indicated in NCDOT Specifications Section 1056. Use fabrics that meet Article 4.1 of AASHTO M 288 and have been evaluated by NTPEP.

Materials should include all necessary hardware to properly secure the fabric per the manufacturer’s recommendations. Filter fabric shall be installed per plans and details with a minimum overlap of 3 feet.

Filter Fabric Geotextile Requirements (MARVA)

Property Type 2 Type 3B Test Method

Typical Application Under Rip Rap Temporary Silt Fence

Elongation (MD & CD) ≥ 50% ≤ 25% ASTM D4632

Grab Strength (MD & CD) 205 lb 100 lb ASTM D4632

Tear Strength (MD & CD) 80 lb 70 lb ASTM D4533

Puncture Strength 440 lb 370 lb ASTM D6241

Wide Width Tensile Strength @

Ultimate (MD & CD)

- - ASTM D4595

Permittivity 0.20 sec-1 0.05 sec-1 ASTM D4491

Apparent Opening SizeC #60 #30 ASTM D4751

UV Stability (Retained Strength)D 50% 70% ASTM D4355

AMARV does not apply to elongation BMinimum roll width of 36 inches required.

CUS Sieve No. per AASHTO M 92 DAfter 500 hours of exposure

Basis of Payment:

All costs incurred to complete the installation of filter fabric under stone stabilization features or in-stream structures shall be included in the lump sum bid prices for the “Stabilization Features” (TS-4.3.0) and the individual “In-Stream Structure” items (TS-5) in the proposal.

All costs incurred for filter fabric material for silt fencing shall be included in the “E&SC – Silt Fence &

Outlet” lump sum price in the proposal.

4.0 Temporary Rock Check Dam

Scope:

Work under this section consists of furnishing all labor, materials, equipment, supplies, supervision, and tools, and performing all work necessary for the installation of Temporary Rock Check dams as indicated on the plans and details. The contractor shall inspect check dams weekly and after each significant rainfall event (0.5 inches or greater) and repair them immediately. Sediment should be removed from behind the dams when the accumulation reaches 12 inches.

All stone material should adhere to the requirements defined in section TS-4.2.0 Stone Material.

Basis of Payment:

All costs incurred to complete the installation of the Temporary Rock Check Dams shall be included in the “E&SC – Rock Check Dams” lump sum bid price on the proposal.

All costs for stone material for the Rock Check Dams will be included in the respective “Stone” lump sum bid price on the proposal.

5.0 Control of Water

Scope:

The Contractor shall be responsible for the accommodation and the maintenance of storm flows in all areas of the project site throughout the construction period. The Contractor shall also be responsible for the control of groundwater and seepage in all excavated areas of the project site throughout the construction period. Project work shall be done in dry conditions. During construction, pumps/diversion methods shall be used to divert storm flow around the work area. All dewatering operations must be performed such that pumped or diverted effluent does not produce sediment-laden runoff. The work conducted under this specification shall consist of the diversion of surface water and groundwater, as necessary to perform the construction required by the contract. The work shall include but is not limited to: (1) constructing, installing, building, and maintaining all the necessary temporary diversions, (2) furnishing, installing, and operating necessary pumps, piping, and other facilities and equipment, and (3) removing all such temporary works and equipment after their intended function is no longer required. The

Contractor shall install, maintain, and operate all pumps, hoses, pipelines, sandbag dikes, channels, flumes, sumps, fuel tanks, and all other temporary diversions and protective works needed to divert stream flow and other surface water through or around the project site. The Contractor is responsible for determining the number and sizes of pumps necessary to complete the de-watering process. Contractors shall plan their de-watering activities to account for increases in water flow due to storms or other events.

Upon completion of the work, the Contractor shall remove all de-watering measures. Any fill placed in the construction area during the de-watering process shall be removed. Upon removal of the de-watering measures, the Contractor shall re-grade all disturbed surfaces, remove any contaminated soils, and restore all areas.

A.) Pumps

The Contractor shall provide pumps that are in good operating order and free of leaks. Pumps that are leaking fuel, lubricants, or other material shall be removed immediately from the work area and repaired or replaced as necessary.

B.) Discharge Protection

During de-watering operations, the Contractor must provide adequate protection from erosion at the discharge area. The discharge of water from the pumping operations shall be undertaken to prevent erosion of soils and the downstream introduction of sediment. All materials placed for the protection of discharge outfalls are temporary in nature and shall be removed from the project area upon completion of the de-watering process.

Basis of Payment:

All costs incurred to complete the control of water and its implementation shall be included in the “E&SC

- Control of Water” lump sum bid price in the proposal.

6.0 Construction Entrance

Scope:

This will involve constructing one construction entrance as shown on the plans. The construction entrance shall remain for the duration of the project. Once all construction activities have been completed to the satisfaction of the Project Engineer, the construction entrance shall be removed, and the area shall be returned to pre-construction condition or equivalent approved by the Project Engineer.

Basis of Payment:

All costs incurred to complete the installation of the construction entrance and its implementation shall be included in the “E&SC - Construction Entrance” lump sum price bid.

7.0 Erosion Control Matting

Scope:

This will involve installing erosion control matting on the finished grades of Stream Banks and

Temporary Erosion Control Blankets on Stormwater Control Devices, as designated on the plans and details, or as directed by the Project Engineer.

The erosion control matting for Stream Banks shall be stabilized using wooden stakes. The wooden stakes shall be 12 inches in length with a notch cut 1 inch from the top. Hardwood “Eco-stakes” or similar biodegradable stakes shall be used to stake all erosion control matting. Any alternative stakes shall be approved by the Project Engineer before use. The erosion control matting shall be a machine-produced mat of 100% coconut fiber with the properties listed below:

Erosion Control Matting - Streambanks

Matrix 100% Coconut Fiber

Weight 20 oz/SY (678 gm/m2)

Tensile Strength 1348 x 626 lb/ft minimum (1650.5 x 766.5 kg/m)

Elongation 34% x 38%

Open Area (measured) 50%

Thickness 0.30 in minimum (7.6 mm)

Flexibility (mg –cm) 65030 x 29590

Permissible Velocity 11 feet/second (3.35 m/s)

Size 6.6 x 164 ft (120 SY) or (100 SM)

“C” Factor 0.002

The Temporary Erosion Control Blankets are to be installed on water quality swales and wetland inlet swales according to the construction plans, Detail 19/D6. The matting should be Western Green BioNet

SC150BN or a similarly rated product. This matting shall be secured with 100% biodegradable stakes.

Temporary Erosion Control Blankets – Stormwater

Matrix 30% Coconut Fibers/ 70% Straw

Weight 8.5 oz/SY (290 g/m2)

Tensile Strength 210 lb/ft minimum (3.1 kN/m)

Elongation 15% x 15%

Open Area (measured) 50%

Thickness 0.30 in minimum (8 mm)

Flexibility (mg –cm) 65030 x 29590

Permissible Velocity 8 feet/second (3.35 m/s)

Size 8ft x 112 ft (100 SY) or (83.6 m2)

“C” Factor 0.03

A.) Soil Preparation

In all areas where matting is to be used, the area shall be first appropriately scarified (with a metal rake or track hoe bucket), Soil Mix installed, seeded with temporary and permanent seed, lightly raked-in to one-quarter inch (0.25”) depth, and covered with 60% coverage of long straw mulch. The seed mixture shall include Temporary Seed and Permanent Seed, as shown in the plans.

B.) Installation

Matting shall be installed on the face and over the top of the slope as shown on the plans and details. The matting material shall be secured with stakes on three feet (3’) centers overall and every two feet (2') on the overlapped seams. Overlap of the fabric shall be a minimum of six inches (6"). Matting shall be securely fastened at the toe of each treated area and over the crown of the slope as shown on the detail sheets in the plans. Material shall be dry when placed. The covered banks shall be properly prepped and neatly finished. The fabric shall not be in tension, but shall be neatly placed against the surface. There shall be no soil voids under the surface of the matting at the time of acceptance by the Project Engineer.

Bank faces shall be neatly finished and free of clumps larger than 2” in diameter. Refer to the construction plan details for additional installation guidance.

Basis of Payment:

All costs incurred to complete erosion control matting installation shall be included in the “Coir Matting -

Streambanks” and “Temporary Erosion Control Blanket – Stormwater” lump sum bid price in the proposal.

8.0 Seeding

Scope:

This will involve prepping and seeding all disturbed areas. This will include, at a minimum, all disturbed areas and the fill area. A temporary and a permanent seed mix have been specified, and all areas will receive a fertilizer application if needed, as indicated by soil testing. Straw will be applied to all seeded areas. Seeding will take place immediately after construction is completed in the disturbed areas.

Immediately after seeding, the site shall be watered lightly but thoroughly so that the top 4” of soil is saturated.

Seeding shall be accomplished by using a broadcast spreader or as directed by the Project Engineer. The

Project Engineer, prior to Bid Submittal, must approve any alternative seeding method. All seeding equipment shall be calibrated before application to the satisfaction of the Project Engineer so that the material is applied accurately and evenly to avoid misses and overlaps. Seed installed by a broadcast spreader shall be capable of placing seed at the specified rate. Seed shall be applied within the top ¼ inch of the soil in two different directions. The appropriate seed, based on season, shall be applied at the application rates shown on the plans.

All areas to be seeded shall conform to the finished grades as specified on the plans and be free of all weeds, trash, debris, brush, clods, loose rocks, and other foreign materials larger than 3 inches in diameter…