STATE OF MICHIGAN

ADAM P. LACH, RA, DIRECTOR

DESIGN AND CONSTRUCTION DIVISION

STATE OF MICHIGAN

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Contractor Close Out Check List Pink Sheet Attachment

Substantial Completion – Minimum Requirements o Certificate of Substantial Completion - A punch list and a final completion date are required.

o Certificate of Occupancy - Temporary Certificate of Occupancy or Partial Certificate of Occupancy o Final Code Permit Approvals - Local city or county government may have delegated authority for elevator approvals.

May include General Building Permit, Plumbing, Mechanical, Electrical, HVAC, site work, elevator division o Final Health Department Approval - Including water testing, equipment approvals, backflow preventer testing, etc.

o Final Fire Marshall (Office of Fire Safety) Approval - Local fire departments may have delegated authority.

o Final HVAC and Water Balancing - reports if required o Final Fire Alarm and Sprinkler System Certifications o Agency Training - Complete all specified training.

o Operator & Maintenance Manuals - A minimum of one complete O&M manual must be provided at the time of

Substantial Completion. Remaining specified copies must be submitted for Final Completion.

o Turnover Special Tools and Equipment - turned over to the agency on or before the date of Substantial

Completion o Keys/Locksets - temporary of permanent lock cores and the submission of all specified keys to agency representative o Commissioning - final operational testing, startup reports or testing reports

Final Completion o Final Payment - DTMB-440 o Final Bond Company/Surety Release for Final Payment o Completion of All Punch List Work o General Guarantee/Warrantees - DTMB-437 o Extended Guarantees/Warrantees - all specified material/equipment extended warranties o Final Contract Change Order - includes final adjustments to unit price work, allowances, liquidated damages, time extensions and extended general conditions if applicable o As Built Drawings - record documents including a final site survey when required; submit per the contract o Disposal Records - Submit copies of disposal records, as specified, for materials being removed from the project.

o Maintenance Agreements - Submit all specified agreements for elevators, kitchen equipment or specialized systems.

o Operator & Maintenance Manuals - submission of the remaining copies specified that were not submitted at

Substantial Completion o SESC and Storm Water Permits - submit evidence of final closure o Extra Material/Spare Parts - submit evidence of turnover to the agency of all specified materials and parts o Demobilization - final cleaning, removal of all temporary measures and restoration of project site

No salvage or surplus material may be sold or burned on the agency project site

The contractor shall recycle or properly dispose of all surplus or salvage material

DEPARTMENT OF TECHNOLOGY, MANAGEMENT AND BUDGET

State Facilities Administration

Design and Construction Division Mailing Address: P.O. Box 30026, Lansing, MI 48909

Street Address: 3111 W. St. Joseph Street, Lansing, MI 48917

This form is required to receive final payment for the contract. Upon completion, submit a completed form to the address above. Authority: 1984 PA 431

The undersigned provides the following statements covering the work defined in the contract dated:

SIGMA CODING AGENCY NUMBER

FILE NUMBER

CONTRACT NUMBER

DEPARTMENT/AGENCY

PROJECT NAME

We guarantee that all labor and materials furnished and the Work performed by us in connection with the subject work are in accordance with the plans and specifications, authorized alterations and additions that should any defects develop or become apparent for a period of __________ year(s) from date of acceptance ______________________________ the same shall, upon written notice, be made good by us without expense to the Owner, and that any other Work, affected in correcting such defects shall also be made good. In addition to the above guarantee, the following additional items are guaranteed as noted:

We certify that all payrolls, material bills, and other indebtedness connected with the work on the subject project have been paid in full.

COMPANY NAME AND CONTRACTOR'S SIGNATURE DATE

WITNESS SIGNATURE DATE

cc: Agency

Designer

DEPARTMENT OF TECHNOLOGY, MANAGEMENT AND BUDGET

State Facilities Administration Design and Construction Division

The work performed under the subject contract between the State of Michigan and the contractor named at the location listed, has been inspected and found to be in compliance with the contract documents, including duly authorized changes, except for the list of the exceptions noted. The Contractor agrees to complete or correct these items on or before (date):

SIGMA CODING

AGENCY NUMBER

FILE NUMBER

CONTRACT NUMBER

DEPARTMENT/AGENCY

PROJECT NAME

CONTRACT PRICE

CONTRACTOR NAME AND ADDRESS

PROFESSIONAL

1. : This Certificate of Substantial Completion is for the entire Work or the parts of the Work listed in Attachment A .

2. : The responsibilities between the Owner and Contractor for security, operation, safety, maintenance, heat and utilities, insurance and warranties and guarantees, pending final payment (or Substantial Completion of the entire Work), shall be as shown on Attachment B.

3. : The following documents are attached to and made a part of this Certificate:

Provide all Closeout Documents

AGENCY REPRESENTATIVE DATE

CONTRACTOR DATE

STATE FACILITIES ADMINISTRATION DATE

PROFESSIONAL DATE

White - Contract Green - Project Manager Canary - Professional Service Contractor Pink - Contractor Goldenrod - Agency

Items of work must be completed before final payment can be made and the contract close out. Authority: 1984 PA 431.

SUBMITTAL ITEM CONTRACTOR DATE FIRM DUE DATE

SUBCONTRACTOR SENT DATE REC'D

010000 FIELD TESTING

Tests Performed

312000 EARTH MOVING

Product Data Material Test Reports

312319 DEWATERING

Shop Drawings

329200 TURF AND GRASSES

Certification of Grass Seed Product Certificates

334100 STORM UTILITY DRAINAGE PIPING

Product Data Shop Drawings

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SUBMITTAL LOG

PROJECT: Nahma Grade Multiuse Trail

OWNER: MI DTMB/DNR

PROJECT NO: 7136-21-0010

CONTRACTOR:

OTHER REVIEWER ACTION COPIES TO

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To Be Performed

Table of Contents Generated by SpecBuilder: 5/24/2023 Division Section Title Pages

DIVISION 31 - EARTHWORK

31 10 00 SITE CLEARING 3

31 20 00 EARTH MOVING 9

31 23 19 DEWATERING 2

31 25 00 EROSION AND SEDIMENTATION CONTROLS 4

DIVISION 32 - EXTERIOR IMPROVEMENTS

32 92 00 TURF AND GRASSES 5

DIVISION 33 - UTILITIES

33 41 00 STORM UTILITY DRAINAGE PIPING 3

END OF TABLE OF CONTENTS

DTMB/DNR

Nahma Grade Multiuse Trail DTMB File #751/20155.JBB

OHM PROJECT # 7136-21-0010

SITE CLEARING

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05/24/2023

Copyright © 2023 by the American Institute of Architects. Warning: This AIA MasterSpec-based document is protected by U.S. Copyright Law and International Treaties.

It was created by "OHM Advisors" for "Nahma Grade Multiuse Trail". A valid, current MasterSpec license is required for editing and use of this document for any other project.(15195)

SECTION 31 10 00 - SITE CLEARING

PART 1 - GENERAL

1.1 SUMMARY

A. Section Includes:

1. Removing existing vegetation.

2. Clearing and grubbing.

3. Stripping and stockpiling topsoil.

B. Related Requirements:

1. Section 31 25 00 "Eroision and Sedimentation Controls" for temporary erosion- and sedimentation-control measures.

1.2 DEFINITIONS

A. Subsoil: Soil beneath the level of subgrade; soil beneath the topsoil layers of a naturally occurring soil profile, typified by less than 1 percent organic matter and few soil organisms.

B. Surface Soil: Soil that is present at the top layer of the existing soil profile. In undisturbed areas, surface soil is typically called "topsoil," but in disturbed areas such as urban environments, the surface soil can be subsoil.

C. Topsoil: Top layer of the soil profile consisting of existing native surface topsoil or existing in-place surface soil; the zone where plant roots grow.

D. Topsoil: Top layer of the soil profile consisting of existing native surface topsoil or existing in-place surface soil; the zone where plant roots grow. Its appearance is generally friable, pervious, and black or a darker shade of brown, gray, or red than underlying subsoil; reasonably free of subsoil, clay lumps, gravel, and other objects larger than 2 inches in diameter; and free of weeds, roots, toxic materials, or other nonsoil materials.

E. Vegetation: Trees, shrubs, groundcovers, grass, and other plants.

1.3 MATERIAL OWNERSHIP

A. Except for materials indicated to be stockpiled or otherwise remain Owner's property, cleared materials shall become Contractor's property and shall be removed from Project site.

1.4 FIELD CONDITIONS

A. Traffic: Minimize interference with adjoining roads, streets, walks, and other adjacent occupied or used facilities during site-clearing operations.

1. Do not close or obstruct streets, walks, or other adjacent occupied or used facilities without permission from Owner and authorities having jurisdiction.

2. Provide alternate routes around closed or obstructed trafficways if required by Owner or authorities having jurisdiction.

B. Utility Locator Service: Notify Miss Dig for area where Project is located before site clearing.

C. Do not commence site clearing operations until temporary erosion- and sedimentation-control measures are in place.

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SITE CLEARING

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D. Soil Stripping, Handling, and Stockpiling: Perform only when the soil is dry or slightly moist.

PART 2 - PRODUCTS

2.1 (NOT USED)

PART 3 - EXECUTION

3.1 PREPARATION

A. Protect and maintain benchmarks and survey control points from disturbance during construction.

B. Protect existing site improvements to remain from damage during construction.

1. Restore damaged improvements to their original condition, as acceptable to Owner.

3.2 EXISTING UTILITIES

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

1. Notify Engineer not less than two days in advance of proposed utility interruptions.

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

3.3 CLEARING AND GRUBBING

A. Remove obstructions, trees, shrubs, and other vegetation to permit installation of new construction.

1. Do not remove trees, shrubs, and other vegetation indicated to remain or to be relocated.

2. Grind down stumps and remove roots larger than 2 inches in diameter, obstructions, and debris to a depth of 12 inches below exposed subgrade.

B. Fill depressions caused by clearing and grubbing operations with satisfactory soil material unless further excavation or earthwork is indicated.

1. Place fill material in horizontal layers not exceeding a loose depth of 8 inches, and compact each layer to a density equal to adjacent original ground.

3.4 TOPSOIL STRIPPING

A. Strip topsoil to depth of 6 inches in a manner to prevent intermingling with underlying subsoil or other waste materials.

1. Remove subsoil and nonsoil materials from topsoil, including clay lumps, gravel, and other objects larger than 2 inches in diameter; trash, debris, weeds, roots, and other waste materials.

B. Stockpile topsoil away from edge of excavations without intermixing with subsoil or other materials. Grade and shape stockpiles to drain surface water. Cover to prevent windblown dust and erosion by water.

1. Limit height of topsoil stockpiles to 72 inches .

2. Stockpile surplus topsoil to allow for respreading deeper topsoil.

3.5 SITE IMPROVEMENTS

A. Remove structures and aggregate base as indicated.

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SITE CLEARING

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3.6 DISPOSAL OF SURPLUS AND WASTE MATERIALS

A. Remove surplus soil material, unsuitable topsoil, obstructions, demolished materials, and waste materials including trash and debris, and legally dispose of them off Owner's property.

END OF SECTION 31 10 00

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EARTH MOVING

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SECTION 31 20 00 - EARTH MOVING

PART 1 - GENERAL

1.1 RELATED DOCUMENTS

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

1.2 SUMMARY

A. Section Includes:

1. Excavating and filling for rough grading the Site.

2. Preparing subgrades for trails, box culverts, and turf and grasses .

3. Excavating and backfilling for structures.

4. Bedding and leveling course for box culverts.

5. Subbase course and base course for trails and walks.

6. Aggregate surface course for multi-use trails and roads.

7. Aggregate surface course for foot paths and walks.

B. Related Requirements:

1. Section 31 10 00 "Site Clearing" for site stripping, grubbing, stripping and stockpiling topsoil, and removal of above- and below-grade improvements and utilities.

2. Section 32 92 00 "Turf and Grasses" for finish grading in turf and grass areas, including preparing and placing planting soil for turf areas.

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.

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

B. Base Course: Aggregate layer placed between the subbase course and surface course or structures.

C. Bedding Course: Aggregate layer placed on the excavated subgrade, supporting the box culvert.

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

E. Drainage Course: Aggregate layer that minimizes upward capillary flow of pore water.

F. 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 Engineer. Authorized additional excavation and replacement material will be paid for according to Contract provisions for changes in the Work.

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 Engineer. Unauthorized excavation, as well as remedial work directed by Architect, shall be without additional compensation.

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

H. Leveling Course: Aggregate layer placed over the bedding course in a trench before laying pipe or setting structures.

I. Structures: Buildings, footings, bridges, box culverts, foundations, retaining walls, slabs, tanks, curbs, mechanical and electrical appurtenances, or other man-made stationary features constructed above or below the ground surface.

J. Subbase Course: Aggregate layer placed between the subgrade and base course, or aggregate layer placed between the subgrade and aggregate surface course.

K. Subgrade: Uppermost surface of an excavation or the top surface of a fill or backfill immediately below subbase, bedding course, drainage fill, drainage course, or topsoil materials.

L. Multi-Use Surface Course: Aggregate layer placed on top of base or subbase serving as the finished/top surface on trails and roads.

M. Foot Path Surface Course: Aggregate layer placed on top of base or subbase serving as the finished/top surface on foot paths and walks.

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

1.4 ACTION SUBMITTALS

A. Product Data: For each type of the following manufactured products required:

1. Geotextiles.

2. Controlled low-strength material, including design mixture.

3. Particle size distribution (gradation) according to ASTM D6913.

1.5 INFORMATIONAL SUBMITTALS

A. Material Test Reports: For each borrow soil material proposed for fill and backfill as follows:

1. Classification according to ASTM D2487.

2. Laboratory compaction curve according to ASTM D698 or ASTM D1557.

3. Density/compaction field testing results.

1.6 FIELD CONDITIONS

A. Traffic: Minimize interference with adjoining roads, streets, walks, and other adjacent occupied or used facilities during earth-moving operations.

1. Do not close or obstruct streets, walks, or other adjacent occupied or used facilities without permission from Owner and authorities having jurisdiction.

2. Provide alternate routes around closed or obstructed traffic ways if required by Owner or authorities having jurisdiction.

B. Improvements on Adjoining Property: Authority for performing earth moving indicated on property adjoining Owner's property will be obtained by Owner before award of Contract.

1. Do not proceed with work on adjoining property until directed by Engineer.

C. Utility Locator Service: Notify Miss Dig for area where Project is located before beginning earth-moving operations.

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EARTH MOVING

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D. Do not commence earth-moving operations until temporary site fencing and erosion- and sedimentation-control measures specified in 31 25 00 "Erosion and Sedimentation Controls" are in place.

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: Soil Classification Groups GW, GP, GM, SW, SP, and SM according to ASTM D2487 , 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 GC, SC, CL, ML, OL, CH, MH, OH, and PT according to ASTM D2487 , 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. Subbase Material: Naturally or artificially graded mixture of natural or crushed gravel, crushed stone, and natural or crushed sand; ASTM D2940/D2940M; with at least 90 percent passing a 1- 1/2-inch sieve and not more than 12 percent passing a No. 200 sieve.

E. Base Course: Naturally or artificially graded mixture of natural or crushed gravel, crushed stone, and natural or crushed sand; ASTM D2940/D2940M; with at least 95 percent passing a 1-1/2-inch sieve and not more than 8 percent passing a No. 200 sieve.

F. Engineered Fill: Naturally or artificially graded mixture of natural or crushed gravel, crushed stone, and natural or crushed sand; ASTM D2940/D2940M; with at least 90 percent passing a 1-1/2-inch sieve and not more than 12 percent passing a No. 200 sieve.

G. Leveling Course: Naturally or artificially graded mixture of natural or crushed gravel, crushed stone, and natural or crushed sand; ASTM D2940/D2940M; except with 100 percent passing a 1/2-inch sieve and not more than 3 percent passing a No. 200 sieve.

H. Bedding Course: Narrowly graded mixture of washed crushed stone, or crushed or uncrushed gravel; ASTM D448; coarse-aggregate grading Size 57; with 100 percent passing a 1-1/2-inch sieve and zero to 2 percent passing a No. 8 sieve.

I. Drainage Course: Narrowly graded mixture of washed crushed stone, or crushed or uncrushed gravel; ASTM D448; coarse-aggregate grading Size 57; with 100 percent passing a 1-1/2-inch sieve and zero to 5 percent passing a No. 8 sieve.

J. Filter Material: Narrowly graded mixture of natural or crushed gravel, or crushed stone and natural sand; ASTM D448; coarse-aggregate grading Size 67; with 100 percent passing a 1-inch sieve and zero to 5 percent passing a No. 4 sieve.

K. Sand: ASTM C33/C33M; fine aggregate.

L. Multi-Use Surface Course: Naturally or artificially graded mixture of natural or crushed gravel, crushed stone, and natural or crushed sand; ASTM D2940/D2940M; with 100 percent passing a 1-inch sieve and not more than 16 percent passing a No. 200 sieve.

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EARTH MOVING

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M. Foot Path Surface Course: Meeting USFS 35A (Wigger Mix Formula) gradation:

1. Size Specifications (% passing): 3/8": 100%, No. 4: 70-75%, No. 8: 45-55%, No. 16: 30-

35%, No. 30: 20-25%, No. 50: 15-20%, No. 100: 10-15%, No. 200: 7-12%.

N. Impervious Fill: Clayey gravel and sand mixture capable of compacting to a dense state.

2.2 GEOTEXTILES

A. Subsurface Drainage Geotextile: Nonwoven needle-punched geotextile, manufactured for subsurface drainage applications, made from polyolefins or polyesters; with elongation greater than 50 percent; complying with AASHTO M 288 and the following, measured per test methods referenced:

1. Survivability: Class 2; AASHTO M 288.

2. Survivability: As follows:

a. Grab Tensile Strength: 90 lbf; ASTM D4632.

b. Sewn Seam Strength: 142 lbf; ASTM D4632.

c. Tear Strength: 45 lbf; ASTM D4533.

d. Puncture Strength: 45 lbf; ASTM D4833.

3. Apparent Opening Size: No. 70 sieve, maximum; ASTM D4751.

4. Permittivity: 0.5 per second, minimum; ASTM D4491.

5. UV Stability: 50 percent after 500 hours' exposure; ASTM D4355.

B. Separation Geotextile: Woven geotextile fabric, manufactured for separation applications, made from polyolefins or polyesters; with elongation less than 50 percent; complying with AASHTO M 288 and the following, measured per test methods referenced:

1. Survivability: Class 2; AASHTO M 288.

2. Survivability: As follows:

a. Grab Tensile Strength: 247 lbf; ASTM D4632.

b. Sewn Seam Strength: 222 lbf; ASTM D4632.

c. Tear Strength: 90 lbf; ASTM D4533.

d. Puncture Strength: 90 lbf; ASTM D4833.

3. Apparent Opening Size: No. 40 sieve, maximum; ASTM D4751.

4. Permittivity: 0.02 per second, minimum; ASTM D4491.

5. UV Stability: 50 percent after 500 hours' exposure; ASTM D4355.

2.3 CONTROLLED LOW-STRENGTH MATERIAL

A. Produce low-density, controlled low-strength material with the following physical properties:

1. Compressive Strength: 140 psi , when tested according to ASTM C495/C495M.

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 earth-moving operations.

B. Protect and maintain erosion and sedimentation controls during earth-moving operations.

C. Protect subgrades and foundation soils from freezing temperatures and frost. Remove temporary protection before placing subsequent materials.

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3.2 DEWATERING

A. Provide 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.

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

C. 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.

D. 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 that avoids inconvenience to others.

3.3 EXPLOSIVES

A. Explosives: Do not use explosives.

3.4 EXCAVATION, GENERAL

A. Classified Excavation: Excavate to subgrade elevations. Material to be excavated will be classified as earth and rock. Do not excavate rock until it has been classified and cross sectioned by Engineer. The Contract Sum will be adjusted for rock excavation according to the Contract Documents. Changes in the Contract Time may be authorized for rock excavation.

1. Earth excavation includes excavating pavements and obstructions visible on surface;

underground structures, utilities, and other items indicated to be removed; and soil, boulders, and other materials not classified as rock or unauthorized excavation.

a. Intermittent drilling; blasting, if permitted; ram hammering; or ripping of material not classified as rock excavation is earth excavation.

3.5 EXCAVATION FOR STRUCTURES

A. Excavate to indicated elevations and dimensions within a tolerance of plus or minus 1 inch. If applicable, extend excavations a sufficient distance from structures for placing and removing concrete formwork, for installing services and other construction, and for inspections.

1. Excavations for Footings and Foundations: Do not disturb bottom of excavation. Excavate by hand to final grade just before placing concrete reinforcement. Trim bottoms to required lines and grades to leave solid base to receive other work.

2. Excavation for Underground Tanks, Basins, and Mechanical or Electrical Utility Structures:

Excavate to elevations and dimensions indicated within a tolerance of plus or minus 1 inch.

Do not disturb bottom of excavations intended as bearing surfaces.

3.6 EXCAVATION FOR TRAILS

A. Excavate surfaces under trails to indicated lines, cross sections, elevations, and subgrades.

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3.7 UNAUTHORIZED EXCAVATION

A. Fill unauthorized excavation under foundations or wall footings by extending bottom elevation of concrete foundation or footing to excavation bottom, without altering top elevation. Lean concrete fill, with 28-day compressive strength of 2500 psi, may be used when approved by Engineer.

1. Fill unauthorized excavations under other construction, pipe, or conduit as directed by

Engineer.

3.8 STORAGE OF SOIL MATERIALS

A. Stockpile borrow soil materials and excavated satisfactory soil materials without intermixing.

Place, grade, and shape stockpiles to drain surface water. Cover to prevent windblown dust.

1. Stockpile soil materials away from edge of excavations. Do not store within drip line of remaining trees.

3.9 BACKFILL

A. Place and compact backfill in excavations promptly, but not before completing the following:

1. Construction below finish grade including, where applicable, subdrainage, dampproofing, waterproofing, and perimeter insulation.

2. Surveying locations of underground utilities for Record Documents.

3. Testing and inspecting underground utilities.

4. Removing concrete formwork.

5. Removing trash and debris.

6. Removing temporary shoring, bracing, and sheeting.

7. Installing permanent or temporary horizontal bracing on horizontally supported walls.

B. Place backfill on subgrades free of mud, frost, snow, or ice.

3.10 UTILITY TRENCH BACKFILL

A. Place backfill on subgrades free of mud, frost, snow, or ice.

B. Place and compact bedding course on trench bottoms and where indicated. Shape bedding course to provide continuous support for bells, joints, and barrels of pipes and for joints, fittings, and bodies of conduits.

C. Backfill voids with satisfactory soil while removing shoring and bracing.

D. Initial Backfill:

1. Soil Backfill: Place and compact initial backfill of subbase material , free of particles larger than 1-1/2 inches in any dimension, to a height of 12 inches over the pipe or conduit.

a. Carefully compact initial backfill under pipe haunches and compact evenly up on both sides and along the full length of piping or conduit to avoid damage or displacement of piping or conduit. Coordinate backfilling with utilities testing.

E. Final Backfill:

1. Soil Backfill: Place and compact final backfill of satisfactory soil to final subgrade elevation.

3.11 SOIL FILL

A. Plow, scarify, bench, or break up sloped surfaces steeper than 1 vertical to 4 horizontal so fill material will bond with existing material.

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B. Place and compact fill material in layers to required elevations as follows:

1. Under grass and planted areas, use satisfactory soil material.

2. Under walks and pavements, use satisfactory soil material.

3. Under steps and ramps, use engineered fill.

4. Under building slabs, use engineered fill.

5. Under footings and foundations, use engineered fill.

C. Place soil fill on subgrades free of mud, frost, snow, or ice.

3.12 SOIL MOISTURE CONTROL

A. Uniformly moisten or aerate subgrade and each subsequent fill or backfill soil layer before compaction to within 2 percent of optimum moisture content.

1. Do not place backfill or fill soil material on surfaces that are muddy, frozen, or contain frost or ice.

2. Remove and replace, or scarify and air dry, otherwise satisfactory soil material that exceeds optimum moisture content by 2 percent and is too wet to compact to specified dry unit weight.

3.13 COMPACTION OF SOIL BACKFILLS AND FILLS

A. Place backfill and fill soil materials in layers not more than 8 inches in loose depth for material compacted by heavy compaction equipment and not more than 4 inches in loose depth for material compacted by hand-operated tampers.

B. Place backfill and fill soil materials evenly on all sides of structures to required elevations and uniformly along the full length of each structure.

C. Compact soil materials to not less than the following percentages of maximum dry unit weight according to ASTM D698,ASTM D1557, or Michigan Cone:

1. Under structures, building slabs, steps, and pavements, scarify and recompact top 12 inches of existing subgrade and each layer of backfill or fill soil material at 95 percent.

2. Under walkways, scarify and recompact top 6 inches below subgrade and compact each layer of backfill or fill soil material at 95 percent.

3. Under turf or unpaved areas, scarify and recompact top 6 inches below subgrade and compact each layer of backfill or fill soil material at 90 percent.

4. For utility trenches, compact each layer of initial and final backfill soil material at 95 percent.

5. For surface courses, compact each layer at 95 percent.

3.14 GRADING

A. General: Uniformly grade areas to a smooth surface, free of irregular surface changes. Comply with compaction requirements and grade to cross sections, lines, and elevations indicated.

1. Provide a smooth transition between adjacent existing grades and new grades.

2. Cut out soft spots, fill low spots, and trim high spots to comply with required surface tolerances.

B. Site Rough Grading: Slope grades to direct water away from buildings and to prevent ponding.

Finish subgrades to elevations required to achieve indicated finish elevations, within the following subgrade tolerances:

1. Turf or Unpaved Areas: Plus or minus 1 inch .

2. Walks: Plus or minus 1 inch .

3. Trails: Plus or minus 1/2 inch .

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3.15 SUBBASE AND BASE COURSES UNDER TRAILS AND WALKS

A. Place subbase course and base course on subgrades free of mud, frost, snow, or ice.

B. On prepared subgrade, place subbase course and base course under trails and walks as follows:

1. Shape subbase course and base course to required crown elevations and cross-slope grades.

2. Place subbase course and base course 6 inches or less in compacted thickness in a single layer.

3. Place subbase course and base course that exceeds 6 inches in compacted thickness in layers of equal thickness, with no compacted layer more than 6 inches thick or less than 3 inches thick.

4. Compact subbase course and base course at optimum moisture content to required grades, lines, cross sections, and thickness to not less than 95 percent of maximum dry unit weight according to ASTM D698,ASTM D1557, or Michigan Cone.

3.16 MULTI-USE AND FOOT PATH SURFACE COURSES

A. Place surface course on subbase or base free of mud, frost, snow, or ice.

B. On prepared subbase or base, place surface course as follows:

1. Shape surface course to required crown elevations and cross-slope grades.

2. Place surface course 8 inches or less in compacted thickness in a single layer.

3. Compact surface course at optimum moisture content to required grades, lines, cross sections, and thickness to not less than 95 percent of maximum dry unit weight according to ASTM D698, ASTM D1557, or Michigan Cone.

3.17 FIELD QUALITY CONTROL

A. Testing Agency: Owner will engage a qualified geotechnical engineering testing agency to perform tests and inspections.

B. Allow testing agency to inspect and test subgrades and each fill or backfill layer. Proceed with subsequent earth moving only after test results for previously completed work comply with requirements.

C. Footing Subgrade: At footing subgrades, at least one test of each soil stratum will be performed to verify design bearing capacities. Subsequent verification and approval of other footing subgrades may be based on a visual comparison of subgrade with tested subgrade when approved by Engineer.

D. Testing agency will test compaction of soils in place according to ASTM D1556, ASTM D2167, ASTM D2937, ASTM D6938, and Michigan Cone, as applicable. Tests will be performed at the following locations and frequencies:

1. Trail Areas: At subgrade and at each compacted fill and backfill layer, at least one test for every 2000 sq. ft. or less of trail but in no case fewer than two tests.

2. Trench Backfill: At compacted initial and final backfill layers, at least one test for every 150 feet or less of trench length but no fewer than three tests per structure.

E. When testing agency reports that subgrades, fills, or backfills have not achieved degree of compaction specified, scarify and moisten or aerate, or remove and replace soil materials to depth required; recompact and retest until specified compaction is obtained.

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3.18 PROTECTION

A. Protecting Graded Areas: Protect newly graded areas from traffic, freezing, and erosion. Keep free of trash and debris.

B. Repair and reestablish grades to specified tolerances where completed or partially completed surfaces become eroded, rutted, settled, or where they lose compaction due to subsequent construction operations or weather conditions.

1. Scarify or remove and replace soil material to depth as directed by Engineer; reshape and recompact.

C. Where settling occurs before Project correction period elapses, remove finished surfacing, backfill with additional soil material, compact, and reconstruct surfacing.

1. Restore appearance, quality, and condition of finished surfacing to match adjacent work, and eliminate evidence of restoration to greatest extent possible.

3.19 DISPOSAL OF SURPLUS AND WASTE MATERIALS

A. Transport surplus satisfactory soil to designated storage areas on Owner's property. Stockpile or spread soil as directed by Engineer.

1. Remove waste materials, including unsatisfactory soil, trash, and debris, and legally dispose of them off Owner's property.

END OF SECTION 31 20 00

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SECTION 31 23 19 - DEWATERING

PART 1 - GENERAL

1.1 SUMMARY

A. Section Includes:

1. Construction dewatering.

B. Related Requirements:

1. Section 31 20 00 "Earth Moving" for excavating, backfilling, site grading, and controlling surface-water runoff and ponding.

2. Section 31 25 00 "Erosion and Sedimentation Controls" for temporary erosion and sediment controls to protect the site while dewatering.

1.2 ACTION SUBMITTALS

A. Shop Drawings: For dewatering system, prepared by or under the supervision of a qualified professional engineer.

1. Include plans, elevations, sections, and details.

2. Show arrangement, locations, and details of wells and well points; locations of risers, headers, filters, pumps, power units, and discharge lines; and means of discharge, control of sediment, and disposal of water.

3. Include layouts of piezometers and flow-measuring devices for monitoring performance of dewatering system.

4. Include written plan for dewatering operations, including sequence of well and well-point placement coordinated with excavation shoring and bracings and control procedures to be adopted if dewatering problems arise.

1.3 FIELD CONDITIONS

A. Project-Site Information: Soil borings have been performed for this Project and are available for information only. The opinions expressed in the reports are those of a geotechnical engineer and represent interpretations of subsoil conditions, tests, and results of analyses conducted by a geotechnical engineer. Owner is not responsible for interpretations or conclusions drawn from this data.

1. Make additional test borings and conduct other exploratory operations necessary for dewatering in accordance with the performance requirements.

2. The soil boring logs are included on the project drawings.

PART 2 - PRODUCTS

2.1 (NOT USED)

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 dewatering operations.

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

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

B. Install dewatering system to ensure minimum interference with roads, streets, walks, and other adjacent occupied and used facilities.

1. Do not close or obstruct streets, walks, or other adjacent occupied or used facilities without permission from Owner and authorities having jurisdiction. Provide alternate routes around closed or obstructed traffic ways if required by authorities having jurisdiction.

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

D. Protect and maintain temporary erosion and sedimentation controls, which are specified in Section 31 25 00 "Erosion and Sedimentation Controls," during dewatering operations.

3.2 INSTALLATION

A. Provide sumps, sedimentation tanks, and other flow-control devices as required by authorities having jurisdiction.

B. Provide standby equipment on-site, installed and available for immediate operation, to maintain dewatering on continuous basis if any part of system becomes inadequate or fails.

3.3 OPERATION

A. Operate system continuously until drains, sewers, and structures have been constructed and fill materials have been placed or until dewatering is no longer required.

B. Operate system to lower and control groundwater to permit excavation, construction of structures, and placement of fill materials on dry subgrades. Drain water-bearing strata above and below bottom of foundations, drains, sewers, and other excavations.

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

2. Reduce hydrostatic head in water-bearing strata below subgrade elevations of foundations, drains, sewers, and other excavations.

C. 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 that avoids inconvenience to others.

D. Remove dewatering system from Project site 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.

3.4 PROTECTION

A. Protect and maintain dewatering system during dewatering operations.

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

END OF SECTION 31 23 19

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EROSION AND SEDIMENTATION CONTROLS

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SECTION 31 25 00 - EROSION AND SEDIMENTATION CONTROLS

PART 1 - GENERAL

1.1 SUMMARY

A. Section Includes:

1. Diversion Ditch.

2. Temporary Bypass Channel.

3. Rock Energy Dissipator.

4. Silt Fence.

5. Straw Wattles.

6. Filter Bags.

7. Sediment Traps.

B. Related Sections:

1. Section 31 10 00 - Site Clearing.

2. Section 31 20 00 - Earth Moving.

3. Section 31 23 19 - Dewatering.

4. Section 33 41 00 - Storm Utility Drainage Piping

5. Section 32 92 00 - Turf and Grasses

1.2 REFERENCES

A. ASTM International:

1. ASTM C127 - Standard Test Method for Density, Relative Density (Specific Gravity), and

Absorption of Coarse Aggregate.

2. ASTM D698 - Standard Test Method for Laboratory Compaction Characteristics of Soil

Using Standard Effort (12,400 ft-lbf/ft3 (600 kN-m/m3).

3. ASTM D1557 - Standard Test Methods for Laboratory Compaction Characteristics of Soil

Using Modified Effort (56,000 ft-lbf/ft3 (2,700 kN-m/m3).

4. ASTM D2922 - Standard Test Method for Density of Soil and Soil-Aggregate in Place by

Nuclear Methods (Shallow Depth).

5. ASTM D3017 - Standard Test Method for Water Content of Soil and Rock in Place by

Nuclear Methods (Shallow Depth).

6. ASTM D6913 - Standard Test Method for Particle Size Distribution (Gradation) of Soil

Using Sieve Analysis.

PART 2 - PRODUCTS

2.1 ROCK AND GEOTEXTILE MATERIALS

A. Furnish materials according to MDOT 2020 Standard Specifications for Construction.

B. Geotextile Fabric: As specified in Section 31 20 00 - Earth Moving .

2.2 SILT FENCE

A. Provide silt fence that complies with section 916 of the MDOT 2020 Standard Specifications for Construction.

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2.3 WATTLES

A. Provide 8" diameter or larger 100% weed free straw wattles. Straw shall be premanufactured, densely packed into biodegradable tubing.

2.4 FILTER BAGS

A. Provide Filter Bags that comply with section 208 and 910 of the MDOT 2020 Standard Specifications for Construction.

PART 3 - EXECUTION

3.1 EXAMINATION

A. Verify compacted subgradeandgranular base is acceptable and ready to support devices and imposed loads.

B. Verify gradients and elevations of base or foundation for other Work are correct.

3.2 SILT FENCE

A. Install silt fence per the requirements of section 208 of the MDOT 2020 Standard Specifications for Construction.

3.3 WATTLES

A. Install straw wattles per the requirements of the DTMB SESC standards.

3.4 FILTER BAGS

A. Install filter bags per the requirements of section 208 of the MDOT 2020 Standard Specifications for Construction.

3.5 DIVERSION DITCHES

A. Windrow excavated material on low side of ditch.

B. Compact to 95 percent maximum density.

C. On entire ditch area, apply seed and mulch, or geotextile fabric and riprap, as specified in the DTMB SESC standards.

3.6 TEMPORARY BYPASS CHANNELS

A. On entire channel area, apply geotextile fabric and stone, or plastic sheeting as specified in the DTMB SESC standards.

B. Install diversion berms, silt fence, sediment traps, and perform dewatering as necessary to minimize impacts to the site and maintain a safe work area.

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3.7 ROCK ENERGY DISSIPATOR

A. Excavate to indicated depth of rock lining or nominal placement thickness as follows. Remove loose, unsuitable material below bottom of rock lining, then replace with suitable material.

B. Lay and overlay geotextile fabric over substrate. Lay fabric parallel to flow from upstream to downstream. Overlap edges upstream over downstream and upslope over downslope Provide a minimum overlap of 3 feet. Offset adjacent roll ends a minimum of 5 feet when lapped. Cover fabric as soon as possible and in no case leave fabric exposed more than 2 weeks.

C. Carefully place rock on geotextile fabric to produce an even distribution of pieces, with minimum of voids and without tearing geotextile.

D. Unless indicated otherwise, place full course thickness in one operation to prevent segregation and to avoid displacement of underlying material. Arrange individual rocks for uniform distribution.

3.8 SEDIMENT TRAPS

A. Clear site, as specified in Section 31 10 00.

B. Construct trap by excavating and forming embankments.

C. Place coarse aggregate or rock at outlet as indicated on DTMB SESC standards.

D. Place geotextile fabric, as specified for rock energy dissipator.

E. When required, obtain borrow excavation for formation of embankment.

3.9 SITE STABILIZATION

A. Incorporate erosion control devices…