z251006_Memorial Park GI Specs.pdf

PROJECT MANUAL FOR

TECHNICAL SPECIFICATIONS

Memorial Park – Green Stormwater

Infrastructure

CLIENT:

SOUTHEAST MICHIGAN COUNCIL OF GOVERNMENTS

DETROIT, MICHIGAN

OWNER:

CITY OF CENTER LINE

CENTER LINE, MICHIGAN

PROJECT DESIGN TEAM:

TROY, MICHIGAN

October 10, 2025

Memorial Park BIDS AND CONSTRUCTION

Green Stormwater Infrastructure

TABLE OF CONTENTS 000100 - 1

TABLE OF CONTENTS

DIVISION 00 –

DIVISION 31 – EARTHWORK

310500

310519

311000 311123

312000

312040

312400

314000

Common Work Results for Earthwork

Geosynthetics

Site Clearing

Aggregate Base Courses

Earth Moving

Finish Grading

Bioretention

Erosion Control

DIVISION 32 – EXTERIOR IMPROVEMENTS

321313 Cement Concrete Pavements, Curbs and Gutters

321373 Concrete Paving Joint Sealants

321413 Permeable Concrete Paver Materials Unilock

END OF SPECIFICATION SECTIONS

000301 Bid Form

BIDS AND CONSTRUCTION Center Line Memorial Park

BID FORM 000301 -1

SECTION 000301 - BID FORM

SUBMIT IN TRIPLICATE

BID TO: COMPANY

LOCATION/ADDRESS

BID FROM: ___________________________________

PROJECT: Memorial Park – Green Stormwater Infrastructure

The City of Center Line will receive sealed bids until 10:00 am local time on Friday, October 31, 2025 at the offices of the City Manager/ Clerk, City of Center Line, 7070 E. Ten Mile Road, Center Line, Michigan 48015, at which time all bids will be publicly opened and read aloud.

The undersigned, having familiarized themselves with the local conditions affecting the cost of the Work and having examined the Project site and the Bidding Documents on file at the office of the _________________, hereby propose to furnish all labor, materials, equipment, and services required by the Contract Documents for the proper completion of each of the following items for the Project.

Prices for each part shall be inclusive of all the requirements found in the contract documents such that a functional, complete, and neat finish product is provided:

Description Quantity Unit Unit Price Total Price

Mobilization, Max 1 LS $ $

Excavate and dispose of soils 129 CY $ $

Porous Pavers 2200 SF $ $

4” Concrete Walk 190 SF $ $

Standard Gravel Shoulder 700 SF $ $

Quart Size Plugs 336 EA $ $

Hardwood Mulch 15 CY $ $

Compost 15 CY $ $

Bioretention Soil 15 CY $ $

Inlet Filter 2 EA $ $

BASE BID: $__________________________

PROPOSED SUBCONTRACTORS

The following proposed Subcontractors are those whose subbids are included in the Base Bid and who are proposed for the Project.

Trade Proposed Subcontractor

Civil __________________________________________________________________________________

Landscaping ____________________________________________________________________________

Other __________________________________________________________________________________

BID FORM 000301 -2

Other __________________________________________________________________________________

ACKNOWLEDGMENT OF ADDENDA

The following addenda have been received, are hereby acknowledged, and their requirements are included in the Base Bid:

Addendum No. Dated Addendum No. Dated

Addendum No. Dated Addendum No. Dated

Addendum No. Dated Addendum No. Dated

BID SECURITY

Accompanying the Bid, as required by the Instructions to Bidders, is a bid security in the form of (Bidder to cross out all but one) a Certified Check, a Bank Draft, a Cashier's Check, or a Bid Bond (AIA Document A310) in the amount of:

________________________________________________ Dollars ($___________________________), made payable to the Owner, which it is agreed, shall be retained as liquidated damages, not as a penalty, by the Owner, if the undersigned fails to execute the Contract in conformity with the form of Contract incorporated in the proposed Contract Documents and fails to furnish required bonds within fourteen (14) days after date of issuance of written notice of selection for the award of a Contract to the undersigned.

If awarded the Contract, the undersigned agrees to commence Work after _______________ and agrees to complete the Work by ________________ (Substantial Completion).

Further, the undersigned agrees to comply with the terms and conditions of the "Liquidated Damages" provisions of the Contract Documents for failure to meet the time schedule set forth in the Agreement.

The Bidder, by submitting this Bid, agrees to the following:

1. To hold the Bid open for ninety (90) days following the time and date set for receipt of Bids.

2. To abide by the Instructions to Bidders for disposition of bid security.

3. To execute a Contract with the Owner

4. To furnish a Performance Bond and a Payment Bond.

BID FORM 000301 -3

5. To perform the Work in accordance with proposed Contract Documents within time period stated in the Agreement.

Respectfully submitted, ______________________________________ By ___________________________________________

(If a corporation, affix seal) Title __________________________________________

Official Address________________________________

Telephone No. (_____) __________________________

Date of Bid __________________________

COMMON WORK RESULTS FOR EARTHWORK 310500 - 1

SECTION 310500 - COMMON WORK RESULTS FOR EARTHWORK

PART 1 - GENERAL

1.1 DESCRIPTION

A. The requirements of this section apply to all other sections of Division 01, 31, 32, and

33.

B. The work shall be executed in conformity with best practice and shall accommodate itself to the project. The Contractor shall consult the Drawings, shop drawings, and field layouts of other trades and shall be governed accordingly in the laying out and installation of his work.

C. The Drawings are diagrammatic and indicate the general arrangement of systems and work included in the contract.

1.2 EXISTING CONDITIONS

A. Known underground, surface and aerial utility lines, and buried objects are indicated on the Drawings.

B. Existing conditions are drawn based on aerial photography, no guarantee is made as to its accuracy.

C. Bidders shall visit the site before submitting proposal and fully inform themselves as to the job and site conditions and other conditions under which the work of this section must be conducted. Submission of proposal implies that the Bidder has visited the site and is fully conversant with soil, site and job conditions.

1.3 PROTECTION

A. Provide, erect, and maintain barriers, barricades, and other types of protection as required by applicable regulatory agencies having jurisdiction to protect the public and construction workers at all times.

B. Protect trees, shrubs and lawn areas which are to receive planting, remain or other features remaining as part of final landscaping.

C. Protect bench marks and existing structures, fences, roads, sidewalks, paving and curbs against damage. Install and maintain proper bridging, planking and cants to provide access to the site.

D. Protect excavations by shoring, bracing, sheet piling, underpinning, or by other methods, as required to prevent cave-ins or loose dirt from falling into excavations.

COMMON WORK RESULTS FOR EARTHWORK 310500 - 2

E. Underpin or otherwise support adjacent structure(s) which may be damaged by excavation work, including utility lines.

F. Notify Engineer of any unexpected sub-surface conditions. Discontinue work in the area until Engineer provides notification to resume work.

G. Protect bottom of excavations and soil around and beneath foundations from frost.

H. Repair all damage to areas or work to be protected at no cost to the Owner.

I. Protect active utility services uncovered during excavation.

1.4 PREPARATION

A. Establish and identify required lines, levels, contours and datum.

B. Maintain bench marks, monuments, and other reference points. Re-establish same if disturbed or destroyed, at no cost to the Owner.

C. Before starting excavation, establish the location and extent of underground utilities occurring in the work area.

D. Notify utility companies to remove and relocate lines which are in the way of excavation.

E. Maintain, protect, re-route or extend as required, existing utility lines which pass through the work area, but are to remain.

F. Pay costs for the above work, except those covered by utility companies.

G. Remove abandoned utility service lines from areas of excavation. Cap, plug or seal such lines and identify at grade.

H. Accurately locate and record abandoned and active utility lines re-routed or extended, on Project Record Documents.

I. Maintain designated temporary roadway, walkways and detours for vehicular and pedestrian traffic.

1.5 QUALITY CONTROL

A. Contractor to notify the appropriate testing firms to perform the required testing. Do not proceed with additional portions of work until the results of tests have been verified.

B. If, during progress of work, tests indicate that compacted materials do not meet specified requirements, remove defective work, replace and retest at no cost to Owner.

COMMON WORK RESULTS FOR EARTHWORK 310500 - 3

C. Ensure compacted fills are tested before proceeding with placement of surface materials.

D. The representatives of the testing laboratory or the Engineer shall determine the adequacy of bearing surfaces prior to construction of foundations.

E. The representatives of the testing laboratory will make all tests of backfill materials to determine their suitability for compaction, and will supervise the placing of backfill as directed by the Engineer.

F. The representatives of the testing laboratory and the Engineer shall have the power of rejection of materials, equipment or operating procedures of the backfilling operation.

The Contractor shall replace, rework or correct work which does not meet the specifications as directed by the testing laboratory and/or the Engineer.

END OF SECTION 310500

GEOSYNTHETICS 31 05 19 - 1

SECTION 31 05 19

GEOSYNTHETICS

PART 1 GENERAL

1.1 SCOPE

A. This Section includes provisions and the installation of geosynthetic materials for separation, reinforcement or drainage control. All materials shall be manufactured, supplied, stored and placed according to the latest referenced standards and as outlined herein. The Contractor shall provide certification of the supplied material. The materials shall be placed to the limits as specified in accordance with the manufacturer’s instructions and as specified herein.

1.2 RELATED SECTIONS

A. Related Sections include the following:

1. Erosion and Sedimentation Controls is included in Section 31 25 00

2. Storm Sewers, Underdrainage, and Drainage System is included in Section 33 41 00.

1.3 MEASUREMENT AND PAYMENT

B. Payment for all geosynthetics work as described in the Drawings or specified herein shall be included in the prices bid for associated work. No additional payment will be made for maintenance or repair to the protective materials employed.

1.4 REFERENCE STANDARDS

A. American Society for Testing Materials (ASTM) - Geotextiles

1. ASTM D3786 - Standard Test for Mullen Burst Strength

2. ASTM D4491 - Standard Test for Flow Rate

3. ASTM D4632 - Standard Test for Grab Tensile Strength

4. ASTM D4335 - Standard Test for UV Resistance 70% Retained Strength

5. ASTM D4533 - Standard Test for Tear Resistance

6. ASTM D4833 - Standard Test for Puncture Resistance

7. ASTM D4873 – Standard Guide for Identification, Storage and Handling of Geosynthetics

8. ASTM D4751 - Standard Test for Apparent Opening Size (AOS)

B. American Society for Testing Materials (ASTM) – Geomembranes-HDPE

1. ASTM D1603 - Standard Test for Carbon Black Content in Olefin Plastics

2. ASTM D4218 - Standard Test for Carbon Black Content in Polyethylene Compounds

3. ASTM D5596 - Standard Test for Carbon Black Dispersion in Polyolefin Geosynthetics

4. ASTM D5191 - Standard Test for Thickness Vapor Pressure of Petroleum Products

5. ASTM D1505 - Standard Test for Density

GEOSYNTHETICS 31 05 19 - 2

6. ASTM D0792 - Standard Test for Density

7. ASTM D6693 - Standard Test for Tensile Properties

8. ASTM D1004 - Standard Test for Tear Resistance

9. ASTM D4873 – Standard Guide for Identification, Storage and Handling of

10. Geosynthetics

11. ASTM D0746 - Standard Test for Brittleness Temperature

12. ASTM D1204 - Standard Test for Dimensional Stability

13. ASTM D1693 - Standard Test for Environmental Stress Crack

14. ASTM D4833 - Standard Test for Puncture Resistance

15. ASTM D4437 - Standard Test for Integrity of Field Seams

C. Michigan Department of Transportation (MDOT)

1.5 SUBMITTALS

A. Submit complete shop drawings and product information for all items to be furnished under this

Section upon receipt of notice to proceed and prior to construction.

B. Submit a mill certificate from the manufacturer certifying that the supplied material meets the chemical, physical and manufacturing requirements specified herein.

C. The Project Manager shall review delivery tickets and quality control documentation to confirm that the rolls received on site meet the project specifications.

1.6 QUALITY ASSURANCE

A. Use adequate numbers of skilled workers who are thoroughly trained and experienced in the necessary trades and who are completely familiar with the specified requirements and methods needed for proper performance of the work of this Section.

B. Codes and Standards: Perform work in compliance with applicable requirements of governing authorities having jurisdiction.

C. General material manufacturing procedures shall be performed in accordance with the manufacturer’s internal quality control guidelines.

D. The Quality of the provided and placed material shall at a minimum comply with the following:

1. MDOT Standard Specifications for Construction.

1.7 DELIVERY, STORAGE AND HANDLING

A. Geotextiles - All storage and handling of the geotextiles shall conform to ASTM D 4873, "Standard Guide for Identification, Storage and Handling of Geosynthetics".

1. During all periods of shipment and storage, the geotextile shall be protected from moisture, direct sunlight, ultraviolet rays, and temperatures greater than 140 degrees F, mud, dirt, dust, and debris.

2. The geotextile shall be covered in an opaque and waterproof protective wrapping, prior to leaving the manufacturing facility. Each roll of geotextile in the shipment shall be labeled with the manufacturer's name, geotextile style and type, lot and roll numbers, and roll dimensions.

GEOSYNTHETICS 31 05 19 - 3

3. The geotextile shall be handled carefully both during shipment, initial unloading and handling in the work area. The Contractor shall provide sufficient manpower and equipment to ensure appropriate handling of the geotextile. If the geotextile is damaged during unloading, storage or onsite transportation, the Project Manager shall determine the extent of the damage and the damaged material shall be rejected.

4. The geotextile shall be stored onsite at a location selected to minimize handling.

B. The material shall be inspected to confirm that it is not damaged, including but not limited to:

1. Punctures from handling, nails, splinters or other deleterious material

2. Tears from operation of equipment or inadequate packaging

3. Exposure to temperature extremes resulting in unusable material

4. Blocking resulting from the bounding together of adjacent membrane layers to excessive heat and pressure

5. Crumpling or tearing from inadequate packaging support

C. At the site, the geomembrane rolls shall be unloaded and placed on a smooth surface free of rocks, mud, debris, or any other protrusions that may damage the material. Materials shall not be stored directly on the ground. The Contractor shall provide adequate equipment and personnel at the time of each delivery to ensure that the geomembrane is not damaged.

Personnel shall handle the geomembrane with care. Any extrudate delivered at the site prior to the installer’s mobilization shall be kept covered and dry.

1.8 DEFINITIONS

A. MARV – Minimum Average Roll Value (MARV) is a manufacturing quality control tool used by all manufacturers to establish published values such that the user/purchaser will have a

97.7% confidence that the property in question will meet published values. MARV is calculated as the typical value minus two standard deviations.

1.9 INSPECTION AND MATERIALS

A. All materials shall be inspected upon arrival at the site to ensure they meet specified requirements and are free of any damage.

B. When damage to the surface of a roll has occurred, examination of the underlying material shall be conducted. If damage is found, the Project Manager shall examine the entire roll for damage. Geomembrane materials showing damage shall be isolated, clearly labeled as damaged, and removed from site, by the Contractor. The Contractor will be held responsible for geosynthetics damaged during the construction process and will be required to replace them.

PART 2 PRODUCTS

2.1 GEOTEXTILES

A. The geotextile shall be inert to commonly encountered chemicals and hydrocarbons. It shall also be resistant to mildew and rot, ultraviolet radiation, insects, and rodents.

B. The geotextile shall meet the geotextile physical requirements stipulated in Section 910, of the

GEOSYNTHETICS 31 05 19 - 4

Michigan Department of Transportation Specifications as tabularized below.

Notes:

(a) For pipe wrap where backfill around the pipe meets granular material Class IIAA requirements; geotextiles, including knitted polyester sock, which meet the following minimum requirements in the applied condition , are permitted; mass/unit area: 3.0 oz/yd2;

Mullen burst strength: 100 psi; maximum apparent opening size must be 0.30 mm for pavement and foundation underdrains and 0.60 mm in other areas. The fluid displacement rate for the Mullen burst test equipment must be 170 mL/min ± 5 mL/min. Subtract tare strength from the ultimate strength as specified in ASTM D3786/D3786M.

(b) Elongation at the specified grab tensile strength no greater than 40% for silt fence.

Geotextile Category

Property

Grab Tensile

Strength

(min.) (lb)

Trapezoid Tear

Strength

(min.) (lb)

Puncture

Strength

(min.) (lb)

Permittivity

(min) (per sec.)

Apparent

Opening Size

(max.) (mm)

Test Method

ASTM

D4632/D4632M

ASTM

D4533/D4533M

ASTM D6241

ASTM

D4491/D4491M

ASTM D4751

Geotextile Blanket(a) 120 45 230 0.5 0.21

Geotextile Liner 200 75 440 0.5 0.21

Heavy Geotextile Liner 270 100 620 0.5 0.21

Woven Geotextile

Separator 270 100 620 0.05 0.425

Non-Woven Geotextile

Separator 200 75 440 0.5 0.425

Woven Stabilization

Geotextile 270 100 620 0.05 0.50

Non-Woven Stabilization

Geotextile 270 100 620 0.5 0.50

Silt Fence 100(b) 45 - 0.1 0.60

Drainage Geocomposites 200 75 440 0.5 0.21

GEOSYNTHETICS 31 05 19 - 5

2.2 TEMPORARY INLET PROTECTION FILTER BAG

A. Filter bags shall be manufactured with woven polypropylene geotextile and sewn by a double needle machine, using a high strength nylon thread. Filter bags will have a design flow rate of

40 gpm/sf.

B. Filter bags shall be manufactured to fit the opening of the catch basin or drop inlet. Filter bag will have the following features:

1. Two dump straps attached at the bottom to facilitate the emptying of the bag;

2. Lifting loops as an internal part of the system to be used to lift the filter bag from the basin;

3. Restraint cord approximately halfway up the sack to keep the sides away from the basin walls, this cord is also a visual means of indicating when the sack should be emptied.

C. Filter bag seams shall have a minimum certified average wide width strength per ASTM D-

4884 of 300 psi.

D. Inlet filter bags for installation in new or existing highway grate and open mouth grate inlets shall be Silt Sack as manufactured by ACF Environmental or approved equal.

E. Type 1 Catch Basin (and curb opening portion of open-mouth grate inlet) protection shall be a synthetic filter manufactured from recycled synthetic fibers such as Gutterbuddy distributed by

ACF Environmental or approved equal.

2.3 SEDIMENT FILTER BAG

A. Sediment filter bag shall be manufactured of non-woven geotextile material that filters soil particles while allowing discharge water to pass through the bag.

B. The sediment filter bag seams shall be a double 401 lock chain stitch seam with minimum 200 lbs./inch sewn seam strength, tested in accordance with ASTM D-4884.

C. The sediment filter bag shall have an adjustable spout large enough to accommodate a six-inch

(6”) diameter discharge hose.

D. The pump intake hose shall be inserted into the bags in the manner specified by the manufacturer and securely clamped.

E. Filter bag shall be inspected daily. If any problem is detected pumping shall cease immediately and not resume until the problem is corrected.

F. Filter bag shall have a rated flow rate fifty percent (50%) greater than the attached pump.

2.4 OTHER GEOSYNTHETICS

A. Other geosynthetic products may be utilized as further defined on the Contract Drawings or specified herein, but are subject to review and approval by the Project Manager.

B. Geosynthetics, other than those specified, may be used but are subject to review and approval by the Project Manager.

PART 3 EXECUTION

3.1 GENERAL REQUIREMENTS

A. All geosynthetic materials shall be placed at the lines and grades as shown on the Contract

Drawings and as specified herein.

GEOSYNTHETICS 31 05 19 - 6

3.2 GEOTEXTILE INSTALLATION

A. During placement of the geotextile and overlying materials, no construction equipment of any kind should operate or be operated directly on the geotextiles.

B. The surface to receive fabric shall be prepared to a relatively smooth condition free of obstructions, depressions, sudden grade changes, debris, and soft or low density pockets of material. Fabric shall be laid smooth and reasonably free of tension, stress, folds, wrinkles, or creases. Geotextiles shall be cut using a manufacturer-approved geotextile cutter only.

C. The fabric shall extend a minimum of one (1) foot beyond the edge of the excavation if possible. At the time of installation, fabric shall be rejected if it has defects, rips, tears, holes, flaws, deterioration, or damage incurred during manufacture, transportation, or storage.

D. The Contractor shall provide temporary wind anchorage during geotextile installation by means of sandbags or other means submitted to the Project Manager for approval. These temporary anchors shall be removed prior to fill placement. The geotextile rolls shall be shingled and the direction of fill placement over them shall be in the direction of this shingling so that the fill placement does not disturb the overlaps. The geotextile shall be placed in such a manner that placement of the overlying materials shall not excessively stretch or tear the geotextile. At the discretion of the Project Manager, securing pins shall be used to hold the fabric firmly in place prior to placing aggregate, fill, or backfill.

E. The geotextile strips shall be placed to provide a minimum width of two (2) feet of overlap for each joint. In excavations that do not allow careful positioning and securing with a suitable overlap of at least two (2) feet, sections shall be joined by field sewing. The thread shall be capable of supplying seam strength of 80 percent of the required tensile strength utilizing a

Type 401 two-thread chain stitch with a “J” seam. The stitches shall be a minimum of two (2) inches from the fabric edge.

F. The work shall be scheduled so that 14 calendar days do not expire between the placement of the geotextile and the covering of the geotextile with a layer of required material. If the 14- day maximum exposure period is exceeded, the geotextile shall be removed and replaced.

G. Any damage to the geotextile during installation or placement of cover material shall be immediately repaired. A geotextile patch shall be placed over the damaged area and extend three (3) feet beyond the perimeter of the tear, hole, or damage.

3.3 INSPECTION, TESTING AND APPROVAL

A. Geosynthetic materials conforming to these specifications shall be used in the work. The

Contractor shall supply all the documentation requested below to the Project Manager prior to beginning geotextile installation.

B. A competent laboratory shall be maintained by the manufacturer of the geotextile at the point of manufacture to ensure quality control in accordance with ASTM testing procedures. The laboratory shall maintain records of its quality control results and shall provide, upon request, a manufacturer's certificate that includes the following:

1. Name of manufacturer

2. Chemical composition

3. Product description

4. Statement of compliance to specification and verification test results

GEOSYNTHETICS 31 05 19 - 7

5. Signature of legally authorized official attesting to the information required

3.4 PLACEMENT OF OVERLYING MATERIAL

A. The placement of the overlying granular material shall be coordinated so that no more than 14 calendar days elapse following geotextile or geomembrane placement.

3.5 DOCUMENTATION

A. The Contractor shall perform a visual inspection on each sheet for puncture, tears, rips, or other injuries. Daily installation progress reports shall be prepared including the following:

1. Names and job description of personnel

2. Date

3. Weather conditions

4. Project location

5. Panels installed

6. Panels seamed, including panel and seam number

7. Repair (puncture, tears, rips, or other injuries, method of repair)

8. Field observations

9. Roll number of each panel

B. Copies shall be provided to the Project Manager on a daily basis.

C. After installation is completed, an as-built drawing of the installation shall be submitted to the

Project Manager recording all panel and seam numbers, test locations, repair locations, and the locations and dimensions of compensation strips, if any.

END OF SECTION 31 05 19

SITE CLEARING 311000 - 1

SECTION 311000 - SITE CLEARING

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. This Section includes the following:

1. Removing existing trees, shrubs and other vegetation.

2. Clearing and grubbing.

3. Removing above-grade and below-grade site improvements.

4. Disconnecting, capping or sealing, and abandoning site utilities in place or removing site utilities.

5. Temporary erosion and sedimentation control measures.

B. Related Sections include the following:

1. Division 31 2000 Section "Earth Moving" for soil materials, excavating, backfilling, and site grading.

1.3 DEFINITIONS

A. Topsoil: Natural or cultivated surface-soil layer containing organic matter and sand, silt, and clay particles; 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 more than 2 inches (50 mm) in diameter; and free of subsoil and weeds, roots, toxic materials, or other nonsoil materials.

1.4 MATERIAL OWNERSHIP

A. Except for stripped topsoil or other materials indicated to remain Owner's property, cleared materials shall become Contractor's property and shall be removed from Project site unless otherwise noted on the plans.

1.5 SUBMITTALS

A. Photographs or videotape, sufficiently detailed, of existing conditions of trees and plantings, adjoining construction, and site improvements that might be misconstrued as damage caused by site clearing.

SITE CLEARING 311000 - 2

B. Record drawings, according to Division 017700 Section "Closeout Procedures.”

1. Identifying and accurately locating capped utilities and other subsurface structural, electrical, and mechanical conditions.

1.6 QUALITY ASSURANCE

A. Conform to state and local laws and code requirements for the hauling and disposing of trees, shrubs, stumps, roots, rubbish, debris and other matter. Pay for all disposal permits and fees. Disposal will not be permitted in a wetland or floodplain unless permits are obtained from the appropriate regulatory agencies.

1.7 PROJECT 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 traffic ways if required by owner or authorities having jurisdiction.

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

Contract. Contractor is to confirm that this authority has been obtained before beginning work on adjoining property.

C. Salvable Improvements: Carefully remove items indicated to be salvaged and store on

Owner's premises where indicated.

D. Utility Locator Service: Notify utility locator service for area where Project is located before site clearing.

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

SITE CLEARING 311000 - 3

PART 2 - PRODUCTS

2.1 SOIL MATERIALS

A. Satisfactory Soil Materials: Requirements for satisfactory soil materials are specified in

Division 31 2000 Section "Earth Moving."

1. Obtain approved borrow soil materials off-site when satisfactory soil materials are not available on-site. Contractor is responsible for doing an independent earthwork computation and including all necessary import and/or export of materials in their bid.

PART 3 - EXECUTION

3.1 PREPARATION

A. Protect and maintain benchmarks and survey control points from disturbance during construction. If said points will be disturbed, establish new points prior to removal.

B. Remove vegetation, topsoil, debris, unsatisfactory soil materials, obstructions, and deleterious materials from ground surface before placing fills.

C. Locate and clearly flag trees and vegetation to remain or to be relocated.

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

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

Owner.

3.2 TEMPORARY EROSION AND SEDIMENTATION CONTROL

A. Provide temporary erosion and sedimentation control measures to prevent soil erosion and discharge of soil-bearing water runoff or airborne dust to adjacent properties and walkways, according to requirements of authorities having jurisdiction and the sediment and erosion control drawings, whichever is more stringent.

B. Inspect, repair, and maintain erosion and sedimentation control measures during construction until permanent vegetation has been established.

C. Remove erosion and sedimentation controls only after all areas are restored and stabilized.

3.3 TREE PROTECTION

A. Erect and maintain temporary fencing around tree protection zones before starting site clearing. Remove fence when construction is complete.

SITE CLEARING 311000 - 4

1. Do not store construction materials, debris, or excavated material within fenced area.

2. Do not permit vehicles, equipment, or foot traffic within fenced area.

3. Maintain fenced area free of weeds and trash.

B. Do not excavate within tree protection zones, unless otherwise indicated.

C. Where excavation for new construction is required within tree protection zones, hand clear and excavate to minimize damage to root systems. Use narrow-tine spading forks, comb soil to expose roots, and cleanly cut roots as close to excavation as possible.

1. Cover exposed roots with burlap and water regularly.

2. Temporarily support and protect roots from damage until they are permanently redirected and covered with soil.

3. Coat cut faces of roots more than 1-1/2 inches (38 mm) in diameter with an emulsified asphalt or other approved coating formulated for use on damaged plant tissues.

4. Backfill with soil as soon as possible.

D. Repair or replace trees and vegetation indicated to remain that are damaged by construction operations, in a manner approved by Architect.

3.4 UTILITIES

A. 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.

B. Excavate for and remove underground utilities indicated to be removed.

3.5 CLEARING AND GRUBBING

A. Remove obstructions, trees, shrubs, grass, 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.

SITE CLEARING 311000 - 5

2. Cut minor roots and branches of trees indicated to remain in a clean and careful manner where such roots and branches obstruct installation of new construction.

3. Grind stumps and remove roots, obstructions, and debris extending to a depth of

18 inches (450 mm) below exposed subgrade.

4. Use only hand methods for grubbing within tree protection zone.

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

(200 mm), and compact each layer to a density equal to adjacent original ground.

3.6 TOPSOIL STRIPPING

A. Remove sod and grass before stripping topsoil.

B. Strip topsoil to whatever depths are encountered in a manner to prevent intermingling with underlying subsoil or other waste materials.

1. Remove subsoil and nonsoil materials from topsoil, including trash, debris, weeds, roots, and other waste materials.

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

1. Stockpile topsoil material in locations approved by the Owner or Engineer.

3.7 SITE IMPROVEMENTS

A. Remove existing above- and below-grade improvements as indicated and as necessary to facilitate new construction.

B. Remove slabs, paving, curbs, gutters, and aggregate base as indicated.

1. Unless existing full-depth joints coincide with line of demolition, neatly saw-cut length of existing pavement to remain before removing existing pavement. Saw-cut faces vertically.

2. Paint cut ends of steel reinforcement in concrete to remain to prevent corrosion.

3.8 DISPOSAL

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

SITE CLEARING 311000 - 6

1. Burning of materials on project property is prohibited.

END OF SECTION 311000

AGGREGATE BASE COURSES 311123 - 1

SECTION 311123 – AGGREGATE BASE COURSES

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. This section includes the furnishing of all materials and installation of aggregate sub-bases, base courses, and surface courses.

B. Related Sections include the following:

1. Division 31 0519 Geosynthetics

2. Division 31 2030 Trenching, Backfilling, and Compacting

3. Division 31 2040 Finish Grading

4. Division 32 1216 Hot-Mix Asphaltic Concrete Paving

5. Division 32 1243 Porous Flexible Paving (Gravelpave2)

6. Division 32 1313 Cement Concrete Pavements, Curbs and Gutters

7. Division 32 1413 Permeable Concrete Paver Materials (Unilock)

1.3 REFERENCES

A. Except as herein specified or as indicated on the Drawings, the work of this section shall comply with the following:

1. Michigan Department of Transportation (MDOT):

a. 2012 Standard Specifications for Construction.

b. Density Testing and Inspection Manual (rev. 2017).

2. ASTM:

a. D75: Standard Practice for Sampling Aggregates.

b. D1557: Test Method for Laboratory Compaction Characteristics of Soil Us-ing Modified Effort.

AGGREGATE BASE COURSES 311123 - 2

c. D6938: Standard Test Method for In-Place Density and Water Content of

Soil and Soil-Aggregate by Nuclear Methods (Shallow Depth).

PART 2 - PRODUCTS

2.1 AGGREGATE MATERIALS

A. Permeable Concrete Paver Base Course, Subbase, Setting Bed, and Join Aggregates re-fer to Division 32 1413 - Permeable Concrete Paver Materials Unilock.

B. Dense-Graded Aggregates for Base Course, Surface Course, Shoulders, Approaches and

Patching: Class 21AA, 21A, 22A, 23A – MDOT 902.05. Aggregate base under bitumi-nous shall be 22A, unless otherwise specified.

C. Open-Graded Aggregates for Earthwork, Open Graded Drainage Courses and Under-drains: Class 4G, 34G, and 34R – MDOT 902.06.

D. Granular Materials for Fill and Subbase: Class I, IIAA, II, IIA, IIAA, IIIA, III – MDOT

902.07.

E. Fine Aggregate for Portland Cement Concrete and Mortar: 2NS, 2SS, and 2MS –

MDOT 902.08.

F. Aggregate General Requirements for HMA Mixtures: MDOT 902.09.

2.2 MATERIAL AVAILABILITY

A. Secure source of material and permits to complete the project requirements.

2.3 WATER FOR COMPACTION

A. Water shall be free of organic materials and shall have a pH of 7.0 to 9.0, a maximum chloride concentration of 500 mg/L, and a maximum sulfate concentration of 500 mg/L.

B. Provide all water needed for earthwork. Provide temporary piping and valves to convey water from the source to the point of use. Obtain meter and backflow permit if required by source utility.

PART 3 - EXECUTION

3.1 EXAMINATION

A. Verify existing conditions before starting work.

B. Verify that compacted substrate is dry and ready to support paving and imposed loads.

AGGREGATE BASE COURSES 311123 - 3

1. Proof roll substrate with a fully loaded tri-axle dump truck (weight bearing on two rear axles) in minimum two perpendicular passes to identify soft spots.

2. Remove soft substrate and replace with compacted fill as specified in Division 31

2333 – Trenching and Backfill.

C. Verify substrate has been inspected and gradients and elevations are correct.

3.2 PREPARATION

A. The finished subgrade shall be within the tolerances listed below of the grade and cross section indicated, shall be smooth and free from irregularities, and shall be at the speci-fied relative compaction. The subgrade shall extend over the full width shown in the cross sections and standard details.

B. Remove soft material encountered and replace with structural backfill. Fill holes and depressions to the required line, grade, and cross sections with structural backfill.

C. After excavation of existing material or removal of unacceptable material at the exposed sub- grade, scarify the final subgrade surface to a depth of 12 inches and compact to

95% relative compaction.

D. Remove foreign materials and trash from the excavation before placing any fill materi-al.

E. Correct irregularities in substrate gradient and elevation by scarifying, reshaping, and re- compacting.

F. Do not place fill on soft, muddy, or frozen surfaces.

3.3 AGGREGATE PLACEMENT

A. If required, install geotextile fabric over subgrade according to manufacturer's instruc-tions and Division 31 0519 – Geotextiles.

B. Place aggregate equal thickness layers to total compacted thickness indicated on Draw-ings.

C. Maximum Layer Compacted Thickness: 6 inches.

D. Minimum Layer Compacted Thickness: 4 inches.

E. Roller compact aggregate to 95 percent maximum density.

F. Level and contour surfaces to elevations, profiles, and gradients indicated.

AGGREGATE BASE COURSES 311123 - 4

G. Maintain optimum moisture content of fill materials to attain specified compaction den-sity.

H. Use mechanical tamping equipment in areas inaccessible to compaction equipment. Do not operate earthmoving equipment within 5 feet of walls of concrete structures. Place and compact backfill adjacent to concrete walls with hand-operated tampers or other equipment that will not damage the structure.

3.4 MOISTURE CONTROL

A. During the compacting operations, maintain optimum practicable moisture content re-quired for compaction purposes in each lift of the material. Maintain uniform moisture content throughout the lift. Insofar as practicable, add water to the material at the site of excavation. Supplement by sprinkling the material. At the time of compaction, the water content of the material shall be at optimum water content or within 2 percentage points above optimum. Aerate material containing excessive moisture by blading, discing, or harrowing to hasten the drying process.

3.5 DISPOSAL OF EXCESS MATERIALS

A. Excess site excavated or wasted material shall be disposed of off-site by the Contrac-tor at his expense. No prearranged disposal site or related permits have been deter-mined or secured by the Owner.

3.6 TOLERANCES

A. Comply with quality requirements in Division 01.

B. Maximum Variation from Flat Surface: 1/4 inch measured with 10-foot straight edge.

C. Maximum Variation from Thickness: 1/4 inch.

D. Maximum Variation from Elevation: 3/8 inch.

3.7 FIELD QUALITY CONTROL

A. Comply with quality requirements in Division 01.

B. Determine the density of soil in place by nuclear methods, ASTM D6938. Additional densities will be required if the backfill material is visually variable. Compaction tests will be performed for each lift or layer.

C. Determine laboratory moisture-density relations of soils per ASTM D1557. If nuclear methods are used for in-place density determination, the compaction test results for maximum dry density and optimum water content shall be adjusted in accordance with

AGGREGATE BASE COURSES 311123 - 5

ASTM D4718. This will be required for determination of percent relative compaction and moisture variation from optimum.

D. Determine the relative density of cohesionless soils per the Michigan Cone Method.

E. Sample materials per ASTM D75.

F. "Relative compaction" is the ratio, expressed as a percentage, of the in-place dry density to the laboratory maximum dry density.

G. When tests indicate Work does not meet specified requirements, remove Work, replace and retest. Compaction shall be deemed to comply with the specifications when no more than one test of any three consecutive tests falls below the specified relative com-paction. The one test shall be no more than three percentage points below the specified compaction. The Contractor shall pay the costs of any retesting of work not conforming to the specifications.

H. Frequency of Tests: Per MDOT Density Testing and Inspection Manual.

END OF SECTION 311123

EARTH MOVING 312000 - 1

SECTION 312000 - 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.

B. All earthwork operations shall confirm to the current Michigan Department of

Transportation standards and specifications.

1.2 SUMMARY

A. This Section includes the following:

1. Preparing subgrades for slabs-on-grade, walks, pavements, lawns, and plantings.

2. Excavating and backfilling for buildings and structures.

3. Drainage course for slabs-on-grade.

4. Subbase course for concrete walks and pavements.

5. Base course for asphalt paving.

6. Subsurface drainage backfill for walls and trenches.

7. Excavating and backfilling trenches within building lines.

8. Excavating and backfilling trenches for buried mechanical and electrical utilities and pits for buried utility structures.

B. Related Sections include the following:

1. Division 31 1000 Section "Site Clearing" for site stripping, grubbing, removing topsoil, and protecting trees to remain.

2. Division 31 2319 Section "Dewatering" for lowering and disposing of ground water during construction.

3. Division 31 2030 Section "Trenching, Backfilling, and Compacting” for

Excavation Support and Protection.

1.3 DEFINITIONS

A. Backfill: Soil materials used to fill an excavation.

EARTH MOVING 312000 - 2

B. Base Course: Layer placed between the subbase course and asphalt paving.

C. Bedding Course: Layer placed over the excavated subgrade in a trench before laying pipe.

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

E. Drainage Course: Layer supporting slab-on-grade used to minimize capillary flow of pore water.

F. Engineered Fill: Fill placed and compacted to densities specified herein, in a controlled manner using lift thickness limited herein, monitored and tested by the Testing Agency or independent Geotechnical Inspector.

G. Excavation: Removal of material encountered above subgrade elevations.

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

I. Rock: Rock material in beds, ledges, unstratified masses, and conglomerate deposits and boulders of rock material 3/4 cu. yd. (0.57 cu. m) or more in volume.

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

K. Subbase Course: Layer placed between the subgrade and base course for asphalt paving, or layer placed between the subgrade and a concrete pavement or walk.

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

M. Undercutting: Necessary excavation of poor quality soils which occur below the existing Topsoil and any uncontrolled fill soils as described in the Geotechnical

Investigation.

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

1.4 SUBMITTALS

A. Product Data: For the following:

1. Each type of plastic warning tape if required for the project.

2. Drainage fabric if required for the project.

3. Separation fabric if required for the project.

EARTH MOVING 312000 - 3

B. Test Reports: Testing Agency shall submit the following reports directly to the engineer and shall copy the contractor:

1. Analysis of soil materials, whether procured on or off site, and including fill, backfill, and borrow materials.

2. Verification of each footing subgrade.

3. In-place density test reports.

4. Moisture-density relationship test reports.

5. Compressive strength or bearing test reports.

C. Material Test Reports: Interpreting test results for compliance of the following with requirements indicated:

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

1.5 QUALITY ASSURANCE

A. Testing Agency Services

1. The Owner will secure and pay for the services of a qualified, independent geotechnical engineer to classify existing soil materials, to recommend and to classify proposed borrow materials when necessary, to verify compliance of materials with specified requirements, and to perform required field and laboratory testing. Geotechnical engineer shall be acceptable to the engineer and the owner and shall be licensed to practice in the state in which the project is located.

B. Pre-excavation Conference: Conduct conference at Project site to comply with requirements in Division 01 3100 Section "Project Management and Coordination” for meetings.

1.6 PROJECT CONDITIONS

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

1. Notify Engineer and Owner not less than three (3) calendar days in advance of proposed utility interruptions.

2. Do not proceed with utility interruptions without Engineer’s or Owner’s written permission.

EARTH MOVING 312000 - 4

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

B. Demolish and completely remove from site existing underground utilities indicated to be removed. Coordinate with utility companies to shut off services if lines are active.

PART 2 - PRODUCTS

2.1 SOIL MATERIALS

A. General: Provide borrow soil materials without additional cost to Owner when sufficient satisfactory soil materials are not available from excavations. Contractor is responsible for doing an independent earthwork calculation and including any import of appropriate fill material required to bring the site to the proposed grades.

B. Satisfactory Soil Material (ASTM D 2487): Free of stones larger than 2 inches in any dimension, trash, debris, organic material, other objectionable material and classified as follows:

1. GW (well-graded gravel).

2. GP (poorly graded gravel).

3. GM (silty gravel).

4. GC (clayey gravel).

5. SW (well-graded sand).

6. SP (poorly graded sand).

7. SM (silty sand).

C. For heavy civil or highway projects, possibly revise above to AASHTO M 145 Soil

Classification Groups A-1, A-2-4, A-2-5, and A-3 and revise below to AASHTO M 145

Soil Classification Groups A-2-6, A-2-7, A-4, A-5, A-6, and A-7.

1. Unsatisfactory Soil Material (ASTM D 2487):

2. SC (clayey sand).

3. CL (lean clay).

4. ML (silt).

5. OL (organic clay).

6. OL (organic silt).

EARTH MOVING 312000 - 5

7. CH (fat clay).

8. MH (elastic silt).

9. OH (organic clay).

10. OH (organic silt).

11. PR (peat).

D. Backfill and Fill: Satisfactory soil materials.

E. Subbase: Naturally or artificially graded mixture of natural or crushed gravel, crushed stone, and natural or crushed sand; ASTM D 2940; Generally either an MDOT Class II sand or 21AA gravel will meet this requirement.

F. Base: Naturally or artificially graded mixture of natural or crushed gravel, crushed stone, and natural or crushed sand; ASTM D 2940; Generally either an MDOT Class II sand or 21AA gravel will meet this requirement.

G. Engineered Fill: Naturally or artificially graded mixture of natural or crushed gravel, crushed stone, and natural or crushed sand; ASTM D 2940; Generally either an MDOT

Class II sand or 21AA gravel will meet this requirement.

1. Clean granular fill meeting MDOT Class II grading requirements.

2. On-site granular deposits within the excavation can be used as engineered fill if approved by the geotechnical engineer and if selective excavation procedures are employed to manage existing clay deposits.

3. Import fill as required to make-up volumes necessary to raise the building site.

H. Bedding: Naturally or artificially graded mixture of natural or crushed gravel, crushed stone, and natural or crushed sand; Generally either an MDOT 3G, 5G, 6A, or 34R will meet this requirement. Bedding requirements of the agencies having jurisdiction over the utility installation take precedence over these specifications.

I. Drainage Fill: Washed, narrowly graded mixture of…