SOW.pdf

U.S.

FISH & WILDLIFE

SERVICE

Station Name/Address:

SHERBURNE NATIONAL WILDLIFE REFUGE

17076 293 Avenue, Zimmerman, MN 55398

Project Name:

AUTOTOUR REHAB. –

SOUTH LOOP

PROJECT MANUAL

Page J - 1

PART III, SECTION J

LIST OF DOCUMENTS, EXHIBITS, AND OTHER ATTACHMENTS

INDEX

TECHNICAL PROVISIONS/SPECIFICATIONS

DIVISION 1 - GENERAL REQUIREMENTS

SECTION 01100 SUMMARY OF THE WORK

SECTION 01310 PROJECT COORDINATION

SECTION 01330 SUBMITTALS

SECTION 01420 DEFINITIONS AND STANDARDS

SECTION 01770 PROJECT CLOSEOUT

DIVISION 2 – SITE CONSTRUCTION

SECTION 02100 SITE WORK

SECTION 02240 DEWATERING

SECTION 02260 EXCAVATION SUPPORT AND PROTECTION

SECTION 02300 EARTHWORK

DIVISION 3 THRU 16 – NOT USED

ATTACHMENTS

SUBMITTAL REGISTER

PRECONSTRUCTION SAFETY CHECKLIST

SEED MIX

SELECT SITE PHOTOS

DRAWINGS

Drawing Number Description Sheet

COVER SHEET, COUNTY/LOCATION MAPS

AND DRAWING INDEX 1 OF 2

SITE PLAN, DETAILS, SECTIONS, AND

NOTES 2 OF 2

DIVISION 1 SECTION 01100

GENERAL REQUIREMENTS SUMMARY OF THE WORK

01100-1

PART 1 - GENERAL

1.1 Project Title: Sherburne National Wildlife Refuge

Autotour Rehabilitation – South Loop

1.2 Work Under These Specifications

A. Contractor shall furnish materials, labor and equipment for the work described below. Measurement and payment shall be as defined below and as indicated in the project plans and specifications. All work items that are not specifically called out below for payment are considered incidental and no direct compensation will be provided.

B. Base Bid

Route 011 (Prairie’s Edge Wildlife Drive)

1. Item 1 – Mobilization and Demobilization. This work includes, but is not limited to, project mobilization and demobilization, project management, oversight, traffic control plans, permitting, site restoration, shoulder grading, seeding, erosion & sediment control and cleanup.

This item will not be measured for separate payment and will be paid for on a lump sum basis.

2. Item 2 – Testing and Inspection. This work includes, but is not limited to, all proof rolling, testing, and inspection work required to execute the construction of this contract.

This item will not be measured for separate payment and will be paid for on a lump sum basis.

3. Item 3 – Additional Authorized Excavation. This work includes but is not limited to, the removal of all unsuitable soil materials not identified in the drawings in areas and to a depth as directed by the Government, hauling and disposing

01100-2 of excavated materials off-site, surveying all areas of additional authorized excavation to determine the volume removed, proof rolling, furnishing & placement of any geotextile fabric for ground stabilization as recommended by Contractor’s Independent 3rd Party Testing Agency, and backfilling excavation by furnishing, placing, and compacting impervious embankment material as recommended by the Contractor’s Independent 3rd Party Testing Agency. Use/location of Additional Authorized Excavation shall be recommended by Contractor’s Independent 3rd Party Testing Agency in writing with verification of recommendation to be provided by Government once written recommendation is received. The Government must authorize any work under this item prior to the work occurring or payment may not be provided for the work.

Measurement for payment for Additional Authorized Excavation will be made by field measurement of the volume in cubic yards of Additional Authorized Excavation acceptably approved and performed. The Contractor shall perform the surveying required for the measurement including line, grade, and calculating total volume of the excavated area. Measurement will be made to the nearest one-tenth of a cubic yard. Measurement must be made prior to backfilling of the excavation and the Government and Contractor must be in agreement on the measured volume prior to backfilling. The Government will not pay for excavation over the unit price quantities provided in the Bid Schedule unless agreed to prior to excavation through the formal modification process.

4. Item 4 – Aggregate Surface. This work includes, but is not limited to furnishing and placing the aggregate, compaction, testing, shaping, proof rolling, traffic control, water for compaction and dust control.

01100-3

Measurement for payment for Aggregate Surface will be made by weight on a ton basis of material acceptably delivered, placed and compacted as described in the project documents. The pay weights for aggregates will be the scale weight of the material delivered. Weight tickets shall be provided to the Government at the end of each day’s operations. The Government will not pay for material placed over the unit price quantities provided in the Bid Schedule unless agreed to prior to placement of the material through the formal Modification process.

5. Item 5 – Wooden Deck/Pull Off No. 4 Demolition.

This work includes, but is not limited to, the demolition of the wooden deck, demolition of the deck foundations, removal of the aggerate pull off, grading, site restoration and disposal of demolished items.

This item will not be measured for separate payment and will be paid for on a lump sum basis.

1.3 Location and Inspection Of Site

A. The work site is located at Sherburne National Wildlife Refuge near Zimmerman, MN. The mailing address is shown on the Solicitation, Offer, and Award (Standard Forms 1442 or, 18 block 9) as attached to this Invitation. The Station Manager may be contacted for further information at the above referenced address or by telephone at (763) 340-0467.

B. All prospective bidders/quoters, contractors, subcontractors, and related persons are encouraged to visit the site(s) of the proposed Work and to assess the location(s) and extent of the Work prior to submitting bids/quotes. Persons may inspect the site by contacting the Station Manager.

01100-4

1.4 Specifications and Drawings for Construction

A. Exact location of all affected utilities will be the responsibility of the contractor. Drawings may not completely show all utilities. Site verification is required in addition to contacting any local authorities and utility companies to determine exact locations of utilities.

B. In case of difference between drawings and specifications, the specifications shall govern.

1.5 Work Not Included In This Contract

A. All items indicated "NIC" on drawings or in specifications are items not included in this contract.

B. Work in place is generally shown as "Existing" on the

Contract Drawings.

C. Work to be performed under other contracts and not included as part of this contract is generally shown as "By Others" on the Contract Drawings.

1.6 Items Provided By The Government

A. Work to be accomplished by the Government or manufactured items to be provided by the Government are generally shown as "By Government" on the Contract Drawings.

1. Unless specifically provided herein, no materials or equipment shall be furnished by the Government under this Contract.

1.7 Engineering Services:

A. The Government has not established a baseline nor a benchmark for this project. The Contractor shall furnish and place all stakes, marks, and templates required for the performance and completion of the

01100-5 work. Any baseline and/or survey work needed to perform the work shall be provided by the Contractor at their expense.

1.8 Temporary Facilities

A. Maintain and restore all government roads, service areas and utilities used to pre-construction condition.

B. The Contractor shall provide, and maintain, temporary toilet facilities at the project site for the duration of the project.

1.9 Site Access and Right of Way

A. The construction access limits on Government property will be established by the Government and the Contractor shall be responsible for complying with these limits and governing all work accordingly. All temporary access roads shall be removed following work completion unless directed otherwise by the Contracting Officer.

B. All bidders are reminded that they are responsible for contacting the local entity such as township, county, or state having jurisdiction in the project vicinity to insure bidders/quoters are aware of any requirements of the local entity. These requirements are between the entity and the bidder. Load limits and other restrictions shall be obeyed. If the Contractor proposes to cross private property, permission must be obtained from the owner to use private property or roads in the conduct of the Work.

C. Work scheduled on Saturdays, Sundays, Federal Holidays or other than normal working hours shall be approved in advance by the Government.

1.10 Safety - In addition to FAR 52.236-13 Accident Prevention

01100-6

A. Contractor shall fill out and submit the “Preconstruction Safety Checklist” to the Contracting Officer (CO) prior to beginning construction. The Contractor shall work with the COR and refuge staff on safety requirements throughout the duration of the Contract.

B. The contractor shall designate a safety officer to ensure a safe work site. The safety officer shall perform daily work site inspections to assure compliance with all safety regulations and standards.

C. The Contractor’s Safety Plan shall be available on-site. The Contractor shall provide Safety Data Sheets (SDS) for all hazardous materials brought on-site.

SDS shall be made available in a conspicuous location.

D. All equipment and work activities shall comply with OSHA Regulations and all accidents incidental to work performed under this contract shall be reported in accordance with OSHA reporting requirements.

Additionally a copy of the accident report shall be provided to the Contracting Officer.

E. The contractor shall provide and install barricades, signs, or other warning devices to delineate the construction area and restrict public access to the construction site. Follow Manual of Uniform Traffic Control Devices (MUTCD).

F. Provide at least one non-freezing-type fire extinguisher in each workshop and shed used for storage of materials on the premises. Place in location readily accessible to workers.

G. Provide at least one non-freezing-type fire extinguisher of the appropriate class for each group of workers performing flammable procedures.

H. Provide and maintain a basic first aid kit for use of workers.

01100-7

(a) Provide first aid supply commensurate with size of project with items necessary for first aid treatment of all injuries. The first aid supply shall include items identified on SDS (see paragraph B of this section) in applicable locations.

(b) Advise all workers of the location of first aid supplies.

(c) Post telephone numbers of nearest hospital or ambulance service and fire station in conspicuous location. Advise all workers of location of telephone numbers.

I. Provide necessary Personnel Protective Equipment (PPE) as identified by SDS and OSHA regulations. Provide documentation, workers have been trained in use of PPE prior to individual use.

J. The contractor shall locate all utilities prior to performing any excavation operations. The contractor shall contact Gopher State One Call to assist in these locates.

1.11 Equipment Cleaning

A. The Contractor shall clean all equipment prior to equipment coming on site to prevent the transport and spread of invasive species.

1.12 EXISTING ROADWAYS AND OTHER ITEMS

A. Contractor shall provide equipment of sufficient size/weight to not damage existing infrastructure.

Existing roadways or other infrastructure items that are damaged due to the Contractor’s operations shall be repaired by the Contractor at their expense.

1.13 WASTE REDUCTION PLANS

01100-8

A. Contractor shall provide a Waste Reduction Plan (FAR Clause 52.223-10) for demolition and construction to promote cost-effective waste reduction in all operations covered by this Contract/Task Order, if required.

B. Materials that can be recycled shall be recycled.

1.14 HAZARDOUS MATERIALS

A. The Contractor shall not use any products containing asbestos, cadmium, chromium, or lead. If products installed are found to contain any of these items, the Contractor shall be responsible for removing and replacing these items with products not containing asbestos, cadmium, chromium, or lead at the Contractor’s expense.

PART 2 - PRODUCTS (Not Applicable)

PART 3 - EXECUTION (Not Applicable)

(END OF SECTION 01100)

DIVISION 1 SECTION 01310

GENERAL REQUIREMENTS PROJECT COORDINATION

01310-1

1.1 Jobsite Administration - Superintendence, Subcontract

administration and Quality Control, is the responsibility of the Contractor.

A. Final decisions relative to items in conflict shall be made by the Contracting Officer.

B. The Government shall have the authority to temporarily suspend the Work for such time as necessary because of the failure on the part of the Contractor to perform any of the provisions of the Contract. No extension of contract performance time will be permitted until the Government determines that the deficiencies in performance, which caused the temporary suspension, have been corrected.

C. The Contractor shall have responsible superintendence on site during all project operations. Contractor shall notify Government of any changes of superintendents.

D. The Contractor shall notify the COR at least ten (10) days prior to the anticipated date of completion of all Work specified herein. Upon completion of the Work, the COR shall proceed with the final inspection which shall be completed as promptly as practicable.

The time required for such inspection and for performing any corrective Work shall be included in the contract performance time.

1.2 Modification/Change Order procedures

A. In the event of the need for a Change Order, the Contractor will receive a letter requesting a price quote for proposed changes to the Contract.

B. For evaluation purposes, the Contractor's quote shall be broken down to show the costs of labor and materials for each proposed category of Work included

DIVISION 1 SECTION 01310

GENERAL REQUIREMENTS PROJECT COORDINATION

01310-2 with the change, along with the total cost for Contractor's overhead, profit, and bond for the proposed changes.

C. All Contract time extensions required as a result of a proposed change must be justified and supported in detail at the time of the proposal.

1.3 Preconstruction Conference

A. Soon after award of the Contract and prior to commencing construction, the Contractor and any subcontractors shall attend a preconstruction conference with representatives of the Government.

Timely notification of the meeting will be given to the Contractor. Time, date, and place of the conference will be determined by the Contracting Officer. Requirements pertaining to Contract administration, construction operations and the project schedule will be discussed. The project schedule shall be in accordance with Section 01330.

The Preconstruction Safety Checklist shall be submitted for review during this conference.

1.4 Progress Meetings

A. Periodic general project meetings will be conducted with a representative of the Contractor at the project site or by telephone by the Government's representative for the purpose of coordinating, expediting, and assessing the work progress.

B. The Contractor shall provide reports of progress on the project, discuss the work schedule for the coming period and present all conflicts, discrepancies or other difficulties for resolution.

PART 3 - EXECUTION (not Applicable)

(END OF SECTION 01310)

DIVISION 1 SECTION 01330

GENERAL REQUIREMENTS SUBMITTALS

01330-1

1.1 General:

A. Refer to submittal register or technical specifications for all submittals required.

B. When specifically requested by the Contracting Officer

(CO), Contractor’s Officer’s Representative (COR) or the Government’s Construction Inspector, the Contractor shall provide copies of manufacturer's written installation instructions and/or recommendations for review and approval prior to accomplishing equipment installation.

1.2 Submittal Register:

A. A submittal register, listing items requiring submittals under this solicitation, is provided as an attachment to this document. The Contractor shall provide all required submittals to the COR within 30 days of award except for items noted otherwise on the submittal register.

B. The Contractor shall provide a Submittal Schedule detail when each submittal will be provided to the Government for review. Contractor shall coordinate Submittal Schedule with Construction Schedule to allow sufficient time for review, and corrections before scheduled activity.

B. Furnish digital submittals or hard copy submittals.

If hard copy submittals are provided, furnish a minimum of four copies of all required submittals.

Three copies will be retained by the Government. The remaining copies will be returned to the Contractor.

C. The approval of submittals shall not relieve the

Contractor to comply with the terms and conditions of the Contract Drawings and Specifications. The Contractor shall be responsible to determine correct

01330-2 dimension, design, connection, detail and satisfactory construction of all Work.

1.3 Project Schedule: Contractor shall provide as required by

Federal Acquisition Regulation (FAR) clauses.*

In addition to the schedule requirements noted in the FAR, the Contractor shall provide the COR a schedule at the Pre Construction Meeting. If the schedule changes from the previously submitted schedule, the Contractor shall promptly provide an updated schedule to the COR.

1.4 Price Breakdown - Lump Sum Items: Contractor shall provide as required by FAR clauses. *

1.5 Subcontractor's List

A. Submit a list of subcontractors who will be working on the project.

1.6 Submittal of Progress Payment Certificate: Contractor shall provide as required by FAR clauses. *

1.7 Guarantees, Warranties And Certificates: Refer to Section

01770

1.8 Operating And Maintenance Instruction: Refer to Section

01770

1.9 Delivery Tickets

A. The Contractor shall submit to the Government's on site representative, one legible copy of each delivery ticket for all material delivered to the construction site.

B. The delivery ticket shall show brand name, catalog number, and number/quantity of items received and other relevant information as described in specific sections of these specifications.

GENERAL REQUIREMENTS

SUBMITTALS

01330-3

C. If Government Representative is not on site, all material tickets for the week shall be collected by the Contractor and provided to the COR (at the COR’s office in Bloomington, Minnesota) by the following Tuesday.

1.10 Waste Manifests and Disposal Tickets

A. The Contractor shall submit copies of all waste manifests as well as waste disposal tickets.

B. Manifests shall state type of waste (i.e., construction debris, hazardous asbestos, etc.), quantity of material disposed, location of disposal, landfill designation, EPA registration of landfill, and EPA registration for transportation of any hazardous wastes.

C. Waste disposal tickets shall state the type of waste, location of disposal, landfill designation, and quantity of material disposed.

1.11 Testing Reports: The Contractor shall submit all testing reports as described in specific sections of these specifications.

1.12 Traffic Control Plan: Contractor shall prepare a traffic control plan and apply for, and receive, (from any Jurisdictions with Authority) any required approvals/permits prior to onsite operations and prior to submitting said plan to the Government.

Contractor shall submit a traffic control plan to demonstrate to the Government how they anticipate handling traffic during the course of construction. This plan shall be submitted by the Contractor prior to any site disturbance. This plan shall be reviewed by the Government and all changes requested by the Government shall be made by the Contractor.

01330-4

The Prairie Wetland Wildlife Drive – South Loop can be closed during on-site construction operations. If the Contractor elects to close this road, the Contractor shall include in his/her traffic Control Plan details on how the Contractor will manage the public traffic for the Prairie Wetland Wildlife Drive – North Loop, which will remain open during Construction.

All Traffic Control shall be paid for by the Contractor.

* The applicable FAR clauses will be provided in full text to the resultant contractor at the pre-construction conference.

(END OF SECTION 01330)

DIVISION 1 SECTION 01420

GENERAL REQUIREMENTS DEFINITIONS AND STANDARDS

01420-1

1.1 Regulatory Requirements

A. All work shall be accomplished in strict accordance with OSHA and all other regulations, codes, and laws in effect at the time the work is performed for the location where it is to be performed.

1.2 Means and Methods

A. Means and methods used in the performance of this Contract must be in accordance with all applicable Federal Acquisition Regulations in addition to OSHA regulations, 29 Code of Federal Regulations, acceptable industry practices as recognized by societies, associations, building codes, manufacturers’ specifications and any applicable state safety and health requirements.

1.3 Permits

A. All permits required to support construction activities such as road permits for oversize, overweight vehicles and equipment, bridge permits, erosion & control/NPDES permits, utility hookup permits, etc. shall be obtained and paid for by the Contractor.

B. The Contractor shall obtain all Erosion and Sediment Control permits as required by Federal, State, County and Local regulations and laws. The Contractor shall prepare the SWPP plan and update the SWPP throughout the entire length of Construction as required by the Jurisdiction with Authority.

(END OF SECTION 01420)

DIVISION 1 SECTION 01770

GENERAL REQUIREMENTS PROJECT CLOSEOUT

01770-1

1.1 Manufacturer's Specifications

A. The installation of manufactured products and equipment, together with all associated parts, shall be in conformance with the manufacturer's recommendations, and code requirements. All installations shall be complete and ready for immediate use, and every part required for proper operation of the manufacturer's equipment shall be provided. Following the completion of the Work under this Contract, all installed equipment shall be tested for proper operation and compliance with the Contract.

1.2 Final Inspection

A. The Contractor shall request a final inspection in writing at least ten (10) days prior to the anticipated date of completion.

B. Work will not be considered ready for final inspection until all the Work has been completed and the Contractor has certified that all items are properly operating and in strict compliance with all Contract terms and conditions.

C. The Contractor or the project supervisor shall be at the job site during the final inspection.

1.3 Tests

A. Complete all tests required to prove actual operating performance of equipment, systems and materials incorporated into the project.

B. Submit reports of all tests to the Contracting Officer prior to final payment.

C. Provide any regulatory acceptance documents in cases of cleanup.

1.4 Maintenance and Operating Instructions

01770-2

A. Submit three (3) final copies of all operating, maintenance instructions and parts lists for all equipment and systems that require adjustment, servicing, and attention for proper operation.

Include all information necessary for proper operation of equipment. Use simple, non-technical language where possible. Provide all necessary diagrams and schematics required by repairmen. Any hazards likely to occur in operation of equipment shall be pointed out to avoid improper operation of any equipment that might result in damage or danger to equipment, building or personnel.

B. Final copies of all maintenance and operating information shall be submitted in bound form as a "Manual of Operating Instructions" with items grouped by sections of Work. Append each manual with name, address, telephone number of Contractor, subcontractor and companies or individuals providing service for equipment used.

C. Provide competent personnel to meet with the

Government representative to fully explain and familiarize the Government personnel with all equipment and its operation and maintenance.

1.5 Record Drawings:

The Contractor shall provide and maintain in proper order and in good, clean condition, at the project site, one (1) complete set of full size prints of all Drawings. On this set, with red pencil or ink, the Contractor will neatly inscribe all changes in Work. At time of final acceptance, and prior to final payment, these corrected prints will be presented to the COR. The Contractor will note all data and changes on these record drawings in sufficient detail and clarity to provide information necessary for preparation of "as built" drawings by the Government.

1.6 Guarantees, Warranties and Certificates

01770-3

A. The Contractor will submit all guarantees, warranties and certificates to the Government prior to final payment.

B. The Government requires a 100% warranty for a period of one full year after final acceptance. Items of Work found defective during the warranty period will be replaced at no cost to the Government and the warranty for that particular part of the Work shall automatically extend for one full year beyond the completion date of repairs.

C. If a manufacturer or supplier offers a guarantee in excess of the one year requirement outlined herein, then the longer guarantee period will apply for those particular items. If a longer guarantee and/or warranty is noted to be provided elsewhere in the project documents (plans, specifications, contract), the longer guarantee and/or warranty shall be provided.

(END OF SECTION 01770)

DIVISION 2 SECTION 02100

SITEWORK SITE WORK

02100-1

PART 1 - GENERAL

1.1 RELATED DOCUMENTS

A. Drawings and general provisions of the Contract and Division 1 Specification Sections, apply to this Section.

B. Minnesota Department of Transportation Standard Specifications for Construction, 2025 Edition, hereafter referred to as MNDOT Standard Specifications. The method of measurement and basis of payment portions do not apply.

1.2 Summary

A. Work covered under this Section includes providing all materials, equipment and labor to prepare the Site for construction, including but not limited to:

1. Clearing and grubbing those portions of the construction site as needed to perform the work.

2. Constructing temporary erosion control measures as required by the Jurisdiction with Authority and as necessary to prevent the erosion of soils and transport of silt, mud and other debris off of the site or to other areas of the site where damage might result or that might otherwise be required by Laws and Regulations. Contractor shall obtain all necessary permits, perform all maintenance, and management of said permits and erosion control measures.

3. Maintaining access roads on an as-needed basis to repair any wear or damage caused by Contractor’s activities.

B. Related Sections:

1. Division 2 Section "Earthwork" for excavating, backfilling, and site grading.

2. Division 2 Section "Dewatering" for dewatering systems for excavations.

3. Division 2 Section "Excavation Support and Protection" for shoring, bracing, and sheet piling of excavations.

1.3 Sequencing

02100-2

A. Contractor shall schedule its operations to minimize the potential for erosion by minimizing the disturbed areas on-site at any given time and completing operations and restoring the site in the shortest time possible.

1.4 References

A. Minnesota Department of Transportation Standard Specifications for Construction, 2025 Edition, hereafter referred to as MNDOT Standard Specifications.

1.5 Utilities

A. The Contractor shall be responsible for verifying the location of existing utilities. Any damage incurred to existing utilities will be repaired by the Contractor at his expense to the satisfaction of the GOVERNEMNT.

B. The Contractor shall contact local authorities, utility companies and Gopher State One Call to determine exact location of utilities prior to commencing any excavation.

1.6 Submittals

A. No submittal required for this section.

PART 2 - PRODUCTS

2.1 General

A. Temporary erosion controls may include, but are not limited to, silt fences, straw bales, geotextiles, terracing, riprap, temporary drainage piping, sedimentation basins, vegetative cover, and any other construction required to prevent erosion and sediment transport

2.2 Silt Fencing (and other required Temporary Sediment Control)

A. Silt fencing and other required Temporary Sediment Control shall conform to MNDOT Standard Plan 5-297.405.

PART 3 - EXECUTION

3.1 Clearing and Grubbing

A. Clearing and grubbing of the work area shall consist of the complete removal of all obstructions above the ground surface and removal of stumps, roots, buried logs, broken

02100-3 concrete and other objectionable matter as noted on the drawings and as required to perform the work. Any and all tree removal, not noted on the drawings to be removed, necessary to accommodate the work to be performed needs to be approved by the Station Manager prior to removal.

B. Protecting all trees and vegetative materials not noted on the drawings to be removed and/or cleared & grubbed as well as trees and vegetative materials meant to remain undisturbed as directed by the Government.

C. Appropriately disposing of vegetative materials cleared and grubbed from the site in accordance with Laws and Regulations.

3.2 Temporary Erosion Controls

A. Temporary Sediment Control shall be installed as required by the Jurisdiction with Authority.

B. Temporary Sediment Control moved to allow access to the excavation area shall be replaced at the end of each construction day.

C. Remove and dispose of all temporary sediment controls at the completion of the work.

D. If soil and debris from the site accumulates in low areas, roadways, ditches, or other areas where in Jurisdictions with Authority’s determination it is undesirable, Contractor shall remove the accumulation and restore the area to its original condition without additional compensation.

3.3 Disposition of Material

A. Cleared and grubbed materials must be disposed of off-site.

Contractor shall comply with all federal, state, county, and local laws and regulations when removing and disposing of cleared and grubbed materials. Excess soil and/or aggregate shall also be disposed of off-site in accordance with all federal, state, and local laws and regulations.

3.4 Construction Survey and Staking

A. Contractor shall provide construction surveying and staking, as needed.

02100-4

(END OF SECTION 02100)

DIVISION 2 SECTION 02240

SITE CONSTRUCTION DEWATERING

02240 - 1

SECTION 02240 - DEWATERING

PART 1 - GENERAL

1.1 RELATED DOCUMENTS

A. Drawings and general provisions of the Contract and Division 01 Specification Sections, apply to this Section.

1.2 SUMMARY

A. Section includes construction dewatering.

B. Related Sections:

1. Division 2 Section "Site Work" for excavating, backfilling, site grading, and for site utilities.

2. Division 2 Section "Earthwork" for excavating, backfilling, site grading, and for site utilities

3. Division 2 Section "Excavation Support and Protection" for shoring, bracing, and sheet piling of excavations.

1.3 DEWATERING REQUIREMENTS

A. The Contractor is solely responsible for determining if dewatering will be required for his or her operations.

B. The Contractor is solely responsible for designing, furnishing and maintaining a dewatering system if the Contractor determines one is necessary for his/her operations.

C. The Contractor is solely responsible for obtaining any and all permits that may be required for the installation of a dewatering system. The Contractor shall follow all requirements of governing authorities related to a dewatering system.

D. The Contractor shall coordinate dewatering locations, schedule, timing, duration, and peak flows and amounts with Refuge Staff.

02240 - 2

1.4 PERFORMANCE REQUIREMENTS

A. Dewatering Performance: If Contractor determines dewatering is necessary for his/her operations, design, furnish, install, test, operate, monitor, and maintain dewatering system of sufficient scope, size, and capacity to control hydrostatic pressures and to lower, control, remove, and dispose of ground water and permit excavation and construction to proceed on dry, stable subgrades.

1. Continuously monitor and maintain dewatering operations to ensure erosion control, stability of excavations and constructed slopes, that excavation does not flood, and that damage to subgrades and permanent structures is prevented.

2. Prevent surface water from entering excavations by grading, dikes, or other means.

3. Accomplish dewatering without damaging existing buildings, structures, and site improvements adjacent to excavation.

4. Remove dewatering system when no longer required for construction.

1.5 SUBMITTALS

A. Other Informational Submittals:

1. Photographs or Videotape: Show existing conditions of adjoining construction and site improvements that might be misconstrued as damage caused by dewatering operations prior to the start of construction operations.

1.6 QUALITY ASSURANCE

A. Installer Qualifications: An experienced installer that has successfully designed and installed at least five dewatering systems.

B. Regulatory Requirements: Comply with governing EPA notification regulations before beginning dewatering.

Comply with hauling and disposal regulations of authorities having jurisdiction.

02240 - 3

1.7 PROJECT CONDITIONS

A. Interruption of Existing Utilities: Do not interrupt any utility serving facilities occupied by Owner or others unless permitted under the following conditions and then only after arranging to provide temporary utility according to requirements indicated:

1. Notify Government no fewer than five (5) days in advance of proposed interruption of utility.

2. Do not proceed with interruption of utility without Government’s written permission.

B. Project-Site Information: A geotechnical report has not been been prepared for this Project.

1. Make test borings and conduct exploratory operations necessary for dewatering.

PART 2 - PRODUCTS (Not Used)

PART 3 - EXECUTION

3.1 PREPARATION

A. Protect structures, utilities, trails, roadways, and other facilities from damage caused by settlement, lateral movement, undermining, washout, and other hazards created by dewatering operations.

1. Prevent surface water and subsurface or ground water from entering excavations, from ponding on prepared subgrades, and from flooding site and surrounding area.

2. Protect subgrades and foundation soils from softening and damage by rain or water accumulation.

B. If Contractor determines that dewatering is necessary for his/her work, install dewatering system to ensure minimum interference with roads, trails, and other adjacent occupied and used facilities.

1. Do not close or obstruct roadways, trails, or other adjacent occupied or used facilities without

02240 - 4 permission from the Government. Provide alternate routes around closed or obstructed trafficways.

C. Provide temporary grading to facilitate dewatering and control of surface water.

D. Monitor dewatering systems as needed.

E. Promptly repair damages to adjacent facilities caused by dewatering.

F. Protect and maintain temporary erosion and sedimentation controls during dewatering operations.

3.2 INSTALLATION

A. If the Contractor determines that dewatering is necessary for his/her operations, install dewatering system utilizing wells, well points, or similar methods complete with pump equipment, standby power and pumps, filter material gradation, valves, appurtenances, water disposal, and surface-water controls.

1. Space well points or wells at intervals required to provide sufficient dewatering.

2. Use filters or other means to prevent pumping of fine sands or silts from the subsurface.

B. If the Contractor determines that dewatering is necessary for his/her operations, place system into operation to lower water levels. Operate system continuously until construction operations are complete and dewatering is no longer required.

C. If the Contractor determines that dewatering is necessary for his/her operations, provide an adequate system to lower and control ground water to permit excavation, and placement of fill materials on dry subgrades.

1. Do not permit open-sump pumping that leads to loss of fines, soil piping, subgrade softening, and slope instability.

D. If the Contractor determines that dewatering is necessary for his/her operations, dispose of water removed by dewatering in a manner that avoids endangering public health, property, and portions of work under construction or completed. Dispose of water and sediment in a manner

02240 - 5 that avoids inconvenience to others. Provide sumps, sedimentation tanks, and other flow-control devices as required by authorities having jurisdiction.

E. If the Contractor determines that dewatering is necessary for his/her operations and if dewatering requirements are not satisfied due to inadequacy or failure of dewatering system, restore damaged foundation soils at no additional expense to Government.

1. Remove dewatering system from Project site and refuge on completion of dewatering. Plug or fill well holes with sand or cut off and cap wells a minimum of 36 inches below overlying construction.

F. Damages: Promptly repair damages to adjacent facilities caused by dewatering operations.

3.3 FIELD QUALITY CONTROL

A. Provide observation to ensure that subsurface soils are not being removed by the dewatering operation.

(END OF SECTION 02240)

DIVISION 2 SECTION 02260

SITE CONSTRUCTION EXCAVATION SUPPORT AND PROTECTION

02260 - 1

SECTION 02260 – EXCAVATION SUPPORT AND PROTECTION

PART 1 - GENERAL

1.1 RELATED DOCUMENTS

A. Drawings and general provisions of the Contract and Division 01 Specification Sections, apply to this Section.

1.2 SUMMARY

A. Section includes temporary excavation support and protection systems.

B. Related Sections:

1. Division 2 Section "Dewatering" for dewatering system for excavations.

2. Division 2 Section “Site Work” for excavation and earthwork.

3. Division 2 Section “Earthwork” for excavation and earthwork.

1.3 EXCAVATION SUPPORT AND PROTECTION REQUIREMENTS

A. The Contractor is solely responsible for determining if excavation support and protection will be required for his/her construction operations.

B. The Contractor is solely responsible for designing, furnishing and maintaining excavation support and protection if the Contractor determines it is necessary for his/her operations.

C. The Contractor shall follow all requirements of governing authorities related to excavation support and protection including, but not limited to, the requirements of OSHA 29 CFR, Part 1926, subpart P “Excavations and Trenches”.

This document states that excavation safety is the sole responsibility of the Contractor.

02260 - 2

1.4 PERFORMANCE REQUIREMENTS

A. If Contractor determines that excavation support and protection is needed for his/her construction operations, design, furnish, install, monitor, and maintain excavation support and protection system capable of supporting excavation sidewalls and of resisting soil and hydrostatic pressure and superimposed and construction loads.

1. Prevent surface water from entering excavations by grading, dikes, or other means.

2. Install excavation support and protection systems without damaging existing structures, and site improvements adjacent to excavation.

1.5 SUBMITTALS

A. Informational Submittals:

1. Photographs or Videotape: Show existing conditions of adjacent construction and site improvements that might be misconstrued as damage caused by the absence of, the installation of, or the performance of excavation support and protection systems. Submit before Work begins.

1.6 PROJECT CONDITIONS

A. Interruption of Existing Utilities: Do not interrupt any utility serving facilities occupied by the Government or others unless permitted under the following conditions and then only after arranging to provide temporary utility according to requirements indicated:

1. Notify the Government no fewer than five (5) days in advance of proposed interruption of utility.

2. Do not proceed with interruption of utility without the Government’s written permission.

B. Project-Site Information: A geotechnical report has not been prepared for this Project.

1. Make test borings and conduct exploratory operations necessary for excavation support and protection.

02260 - 3

PART 2 - PRODUCTS

2.1 MATERIALS

A. General: Provide materials that are either new or in serviceable condition.

PART 3 - EXECUTION

3.1 PREPARATION

A. If Contractor determines that excavation support and protection is required for his/her construction operations, protect structures, utilities, trails, roadways, and other facilities from damage caused by settlement, lateral movement, undermining, washout, and other hazards that could develop during excavation support and protection system operations.

B. If Contractor determines that excavation support and protection is required for his/her construction operations, install excavation support and protection systems to ensure minimum interference with roads, trails, and other adjacent occupied and used facilities.

1. Do not close or obstruct roadways, trails, or other adjacent occupied or used facilities without permission from the Government. Provide alternate routes around closed or obstructed trafficways.

C. If Contractor determines that excavation support and protection is required for his/her construction operations, monitor excavation support and protection systems daily during excavation progress and for as long as excavation remains open. Promptly correct bulges, breakage, or other evidence of movement to ensure that excavation support and protection systems remain stable.

D. Promptly repair damages to adjacent facilities caused by installing excavation support and protection systems.

3.2 REMOVAL AND REPAIRS

A. If Contractor determines that excavation support and protection is required for his/her construction

02260 - 4 operations, remove excavation support and protection systems when construction has progressed sufficiently to support excavation and bear soil and hydrostatic pressures. Remove in stages to avoid disturbing underlying soils or damaging structures, roadways, facilities, and utilities.

1. Fill voids immediately with approved fill, compacted to density specified in Division 2 Section "Earthwork."

2. Repair or replace, as approved by Government, adjacent work damaged or displaced by removing excavation support and protection systems.

(END OF SECTION 02260)

DIVISION 2 SECTION 02300

SITE CONSTRUCTION EARTHWORK

02300 - 1

SECTION 02300 - EARTHWORK

PART 1 - GENERAL

1.1 RELATED DOCUMENTS

A. Drawings and general provisions of the Contract and Division 1 Specification Sections, apply to this Section.

B. Minnesota Department of Transportation Standard

Specifications for Construction, 2025 Edition, hereafter referred to as MNDOT Standard Specifications. The method of measurement and basis of payment portions do not apply.

1.2 SUMMARY

A. This Section includes the following:

1. Preparing subgrades and existing surfaces for aggregate placement.

2. Aggregate Surface placement.

B. Related Sections include the following:

1. Division 2 Section "Site Work" for temporary erosion & sedimentation control measures and clearing & grubbing.

2. Division 2 Section “Dewatering” for dewatering systems for excavations.

3. Division 2 Section “Excavation Support and Protection” for shoring, bracing, and sheet piling of excavations.

4. Division 2 Section "Lawns and Grasses" for finish grading, including preparing & placing topsoil and seeding.

1.3 DEFINITIONS

A. Backfill: Soil material or controlled low-strength material used to fill an excavation.

1. Initial Backfill: Backfill placed beside and over pipe in a trench, including haunches to support sides of pipe.

02300 - 2

2. Final Backfill: Backfill placed over initial backfill to fill a trench.

B. Existing Aggregate Surface Course: Course of existing aggregate to remain in place.

C. Proposed Aggregate Surface Course: Course of proposed aggregate to be placed on top of existing aggregate to remain in place, and to be shaped/compacted.

D. Borrow Soil: Satisfactory soil imported from off-site for use as fill or backfill.

E. Excavation: Removal of material encountered above subgrade elevations and to lines and dimensions indicated.

1. Authorized Additional Excavation: Excavation below subgrade elevations or beyond indicated lines and dimensions as directed by the Government. Authorized additional excavation and replacement material will be paid for according to Contract provisions.

2. Bulk Excavation: Excavation more than 10 feet in width and more than 30 feet in length.

3. Unauthorized Excavation: Excavation below subgrade elevations or beyond indicated lines and dimensions without direction by the Government. Unauthorized excavation, as well as remedial work directed by the Government, shall be without additional compensation.

F. Fill: Soil materials used to raise existing grades.

G. Rock: Rock material in beds, ledges, unstratified masses, conglomerate deposits, and boulders of rock material 3/4

cu. yd. (0.57 cu. m) or more in volume that exceed a standard penetration resistance of 100 blows/2 inches (97 blows/50 mm) when tested by an independent geotechnical testing agency, according to ASTM D 1586.

H. Subgrade: Surface or elevation remaining after completing excavation, or top surface of a fill or backfill immediately below subbase, drainage fill, or topsoil materials.

I. Utilities: On-site underground pipes, conduits, ducts, and cables, as well as underground services within buildings.

02300 - 3

1.4 SUBMITTALS

A. Test Reports: From CONTRACTOR’s Independent 3rd Party Testing Agency indicating and interpreting test results for compliance with the following Contract requirements:

1. Classification according to ASTM D 2487 of each on-site and borrow soil material proposed.

2. Results of Proof rolls.

3. Results of Proctor Tests to be performed on fills and aggregates to be placed.

4. Results of In-Place Compaction Density Tests.

B. Test Agency Qualifications.

1.5 QUALITY ASSURANCE

A. Blasting: Not allowed

B. CONTRACTOR’s Independent 3rd Party Testing Agency qualifications: Independent testing agency qualified according to ASTM E 329 to conduct soil materials and rock-definition testing, as documented according to ASTM D 3740 and ASTM E 548.

1.6 PROJECT CONDITIONS

A. Existing Utilities: Do not interrupt utilities serving facilities occupied by the Government or others unless permitted in writing by Government and then only after arranging to provide temporary utility services according to requirements indicated.

1. Notify Government not less than two (2) days in advance of proposed utility interruptions.

2. Do not proceed with utility interruptions without Government's written permission.

3. Contact utility-locator service for area where Project is located before excavating.

02300 - 4

1.7 PAYMENT FOR ADDITIONAL MATERIALS

A. The Government will not pay for material (including aggregate, etc.) placed over the unit price quantities provided in the Bid Schedule unless agreed upon prior to placement of the material through the formal Modification process.

PART 2 - PRODUCTS

2.1 SOIL MATERIALS

A. General: Provide borrow soil materials when sufficient satisfactory soil materials are not available from excavations.

B. Satisfactory Soils: ASTM D 2487 Soil Classification Groups GW, GP, GC, GM, SW, SP, SC, SM, and CL or a combination of these groups; free of rock or gravel larger than 3 inches in any dimension, debris, waste, frozen materials, vegetation, and other deleterious matter.

C. Unsatisfactory Soils: Soil Classification Groups ML, OL, CH, MH, OH, and PT according to ASTM D 2487, or a combination of these groups.

1. Unsatisfactory soils also include satisfactory soils not maintained within 2 percent of optimum moisture content at time of compaction.

D. Aggregate Surface Course: Artificially graded mixture of crushed gravel, crushed stone, and crushed sand; Class 2, MNDOT Specification Section 3138.

E. Chat Course: Small, angular particles of rock that are smaller than gravel but larger than sand. Particle size between 1/16 inch to 1/4 inch in diameter. Color to match Aggregate Surface Course.

F. Engineered Fill: Artificially graded mixture of crushed gravel, crushed stone, and crushed sand; Class 5, MNDOT Specification Section 3138.

02300 - 5

PART 3 - EXECUTION

3.1 PREPARATION

A. Protect structures, utilities, sidewalks, pavements, and other facilities from damage caused by settlement, lateral movement, undermining, washout, and other hazards created by earthwork operations.

B. Preparation of existing aggregate surfaces for earthwork operations as specified in Division 2 Section "Site Work."

C. Protect and maintain erosion and sedimentation controls, which are specified in Division 2 Section "Site Work," during earthwork operations.

D. Provide protective insulating materials to protect subgrades and foundation soils against freezing temperatures or frost.

3.2 DEWATERING

A. Prevent surface water and ground water from entering excavations, from ponding on prepared subgrades, and from flooding project site and surrounding area.

B. Protect subgrades from softening, undermining, washout, and damage by rain or water accumulation.

1. Reroute surface water runoff away from excavated areas. Do not allow water to accumulate in excavations. Do not use excavated trenches as temporary drainage ditches.

2. Install a dewatering system to keep subgrades dry and convey ground water away from excavations. Maintain until dewatering is no longer required.

3.3 EXPLOSIVES

A. Explosives: Do not use explosives.

02300 - 6

3.4 EXISTING AGGRAGATE SURFACE INSPECTION

A. If Government determines that unsatisfactory soil is present, excavate and replace with compacted suitable materials as directed and in accordance with the Authorized Additional Excavation procedures. Suitable materials (fills, aggregates, etc.) shall be included in the bid item for Authorized Additional Excavation.

B. Proof-roll aggregate base with heavy pneumatic-tired equipment to identify soft pockets and areas of excess yielding. Contractor to notify the COR five (5) business days prior to proof roll of existing aggregate surfaces.

Notification shall include the location of the proof roll and the date/time it will be conducted.