2024-10-22_Special_Provisions_for_BID.docx

Village of Schaumburg Gray Farm Marsh Channel Improvements

VILLAGE OF SCHAUMBURG

SPECIAL PROVISIONS

for

GRAY FARM MARSH

Village of Orland Park Orland Hills West Subdivision Road and Ditch Reconstruction DuPage County

CHANNEL IMPROVEMENTS

TABLE OF CONTENTS

SPECIAL PROVISIONS

The following Special Provisions supplement the "Standard Specifications for Road and Bridge Construction", adopted, January 1, 2022, the latest edition of the "Manual on Uniform Traffic Control Devices for Streets and Highways", the “Standard Specifications for Water and Sewer Construction in Illinois”, and the "Manual of Test Procedures of Materials" in effect on the date of invitation of bids, and the Supplemental Specification and Recurring Special Provisions indicated on the Check Sheet included here in which apply to and govern the construction of the Village of Schaumburg Gray Farm Marsh Drainage Improvements Project, and in case of conflict with any parts, or parts of said Specifications, the said Special Provisions shall take precedence and shall govern.

LOCATION OF PROJECT:

This work is located east of Linsey Avenue and west of Willington Drive within the Gray Farm Park and Conservation Area. The project is within the village limits of Schaumburg in Cook County, Illinois.

DESCRIPTION OF PROJECT:

This work consists of dredging channels within the marsh that have silted in, prescribed burning, seeding, plugging and ecological management for three years, and all other miscellaneous work to construct the project as shown on the plans and described herein.

CONSTRUCTION DEBRIS

Add the following to the third paragraph of Article 202.03 of the Standard Specifications:

“The Contractor shall not conduct any generation, transportation, or recycling of construction, demolition debris, and clean or uncontaminated soil generated during construction remodeling, repair, and demolition of utilities, structures, and roads that is not commingled with any waste, without the maintenance of documentation identifying the hauler, generator, place of origin of the debris or soil, the weight or volume of the debris or soil, and the location, owner, and operator of the facility where the debris or soil was transferred, disposed, recycled or treated. This documentation must be maintained by the Contractor for 3 years.”

CLEAN CONSTRUCTION/ DEMOLITION DEBRIS (CCDD) REQUIREMENT

If the Contractor is planning on disposing of uncontaminated soils at a licensed CCDD landfill, the Village of Schaumburg will supply IEPA Form LPC 662 “Source Site Certification by Owner or Operator” which identifies the soils as primarily residential with no known use for commercial or industrial purposes.

It is up to the Contractor to coordinate with their receiving facility in advance of bidding to ensure that the particular receiving agency is not going to require anything other than this certification. If the receiving facility being used by the Contractor will require additional documentation or testing, it is up to the Contractor to provide this information at no additional cost to the Village.

If materials are encountered that need to be disposed of as special waste or hazardous waste, this will be paid for per Article 109.04 of the Standard Specifications.

MAINTENANCE OF ROADWAYS

Beginning on the date that work begins on this project, the Contractor shall assume responsibility for normal maintenance of all existing roadways within the limits of the improvement. This normal maintenance shall include all repair work deemed necessary by the Engineer but shall not include snow removal operations. Traffic control and protection for maintenance of roadways will be provided by the Contractor as required by the Engineer.

If items of work have not been provided in the contract, or otherwise specified for payment, such items, including the accompanying traffic control and protection required by the Engineer, will be paid for in accordance with Article 109.04 of the Standard Specifications.

STATUS OF UTILITIES

Utility companies and/or municipal owners located within the construction limits of this project have provided the following information regarding their facilities and the proposed improvements. The tables below contain a description of specific conflicts to be resolved and/or facilities which will require some action on the part of the Contractor to proceed with work. Each table entry includes an identification of the action necessary and, if applicable, the estimated duration required for the resolution.

UTILITIES TO BE WATCHED AND PROTECTED

The areas of concern noted below have been identified by following the suggested staging plan included for the contract. The information provided is not a comprehensive list of all remaining utilities, but those which during coordination were identified as ones which might require the Village’s contractor to take into consideration when making the determination of the means and methods that would be required to construct the proposed improvement. In some instances, the contractor will be responsible to notify the owner in advance of the work to take place so necessary staffing on the owner’s part can be secured.

The following contact information is what was used during the preparation of the plans as provided by the owner of the facility.

ATT/DISTRIBUTION

G11629@ATT.COM

COMED

PLANSUBMITTALSANDMAPREQUESTS@EXELONCORP.COM

HBK ENGINEERING LLC

USIC LOCATING SERVICES

The above represents the best information available to the Village and is included for the convenience of the bidder. The days required for conflict resolution should be considered in the bid as this information has also been factored into the timeline identified for the project when setting the completion date. The applicable portions of the Standard Specifications for Road and Bridge Construction shall apply.

The estimated duration of time provided above for the first conflicts identified will begin on the date of the executed contract regardless of the status of the utility relocation. The responsible agencies will be working toward resolving subsequent conflicts in conjunction with contractor activities in the number of days noted.

The estimated relocation duration must be part of the progress schedule submitted by the contractor. A utility kickoff meeting will be scheduled between the Village, the Village’s contractor, and the utility companies when necessary. The Village’s contractor is responsible for contacting J.U.L.I.E. prior to all excavation work.

COMPLETION DATE/ LIQUIDATED DAMAGES

All work, including placing and watering of sod for parkway restoration and punch list items, shall be completed by December 31, 2027, unless additional time is granted in accordance with Article 108.08 of the Standard Specifications.

Should the Contractor fail to complete all work by this date, the Contractor shall be liable to pay the Village liquidated damages per calendar day in accordance with Article 108.09 of the Standard Specifications.

The time required for sod to establish roots and be growing in a live healthy condition in accordance with Article 252.12 of the Standard Specifications along with the removal of temporary erosion control measures shall not be included in the completion date. These items shall be concluded not more than 30 calendar days after the completion date. Should the sod not be in an acceptable condition and the temporary erosion control measures not removed within this time frame, the Contractor shall be liable to pay liquidated damages as stated above.

PUBLIC CONVENIENCE AND SAFETY

Add the following to the end of the fourth paragraph of Article 107.09:

“If the holiday is on a Saturday or Sunday, and is legally observed on a Friday or Monday, the length of Holiday Period for Monday or Friday shall apply.”

Add the following sentence after the Holiday Period table in the fourth paragraph of Article 107.09:

“The Length of Holiday Period for Thanksgiving shall be from 5:00 AM the Wednesday prior to 11:59 PM the Sunday after.”

Delete the fifth paragraph of Article 107.09 of the Standard Specifications:

“On weekends, excluding holidays, roadways with Average Daily Traffic of 25,000 or greater, all lanes shall be open to traffic from 3:00 P.M. Friday to midnight Sunday except where structure construction or major rehabilitation makes it impractical.”

TRAFFIC CONTROL PLAN

Traffic Control shall be according to the applicable sections of the Standard Specifications, the Supplemental Specifications, the "Illinois Manual on Uniform Traffic Control Devices for Streets and Highways", any special details and Highway Standards contained in the plans, and the Special Provisions contained herein.

Special attention is called to Article 107.09 of the Standard Specifications and the following Highway Standards, Details, Quality Standard for Work Zone Traffic Control Devices, Recurring Special Provisions and Special Provisions contained herein, relating to traffic control.

The Contractor shall contact the Village of Schaumburg at least 72 hours in advance of beginning work. Advanced notice shall be provided to residents, police, fire, school districts, and trash haulers when access to any street will be temporarily closed or limited.

Construction operations shall be conducted in a manner such that streets will be open to emergency traffic and accessible as required to local traffic. Construction of storm sewers, water main, driveways, and curb and gutter shall be planned to cause a minimum of inconvenience to the abutting property owners. The work in this contract shall be accomplished in a manner such that the street will be left open to local traffic at the end of each working day.

STANDARDS:

DETAILS:

TC-10 Traffic Control and Protection for Side Roads, Intersections, and Driveways

SPECIAL PROVISIONS:

Maintenance of Roadways Public Convenience and Safety

SP 1. MOBILIZATION

DESCRIPTION

This work shall consist of preparatory work and operations necessary for the movement of personnel, equipment, materials, supplies, and incidentals to the project site for all work or operations which must be performed or costs incurred when beginning work on the project. This work applies to all work associated with this project. No separate mobilization is allocated for the wetland plant installation or tree removal.

BASIS OF PAYMENT

This item will be paid for at the contract lump sum price for MOBILIZATION. This item will only be paid for once regardless if the project needs to be stopped for any reason.

SP 2. CONSTRUCTION LAYOUT

The Contractor shall furnish and place all construction layout stakes for this project. The Contractor will be provided with a copy of the plans in AutoCAD file format. Competent personnel with suitable equipment shall conduct this work, supervised by a licensed Illinois Land Surveyor. The Contractor shall be responsible for having the finished work conform substantially to the lines, grades, elevations, and dimensions shown on the plans.

The Contractor shall provide adequate field forces, equipment, and material to establish offset stakes, reference points and any other horizontal or vertical controls, including benchmarks and control points to construct the individual project elements. The stakes for line and grade of pavement and/or curb shall be set at sufficient intervals (not to exceed 50 ft.) to assure conformance to plan line and grade.

The Contractor shall record all field notes in standard survey field notebooks and those books shall become the property of the Owner at the completion of the project. All notes shall be neat, orderly and in an accepted format.

This work will be paid for at the contract Lump Sum unit price for Construction Layout, which price shall be payment in full for the work as specified herein.

SP 3. PRECONSTRUCTION VIDEO RECORDING

This work shall consist of furnishing all materials and labor required to perform a video recording of the construction limits, adjacent right-of-way, and adjacent structures bordering the work. All pertinent features within and impact by the construction zone shall be shown in sufficient detail to document the preconstruction condition. This shall include, but not be limited to, existing buildings, garages, pavements, curb and gutter, sidewalks, fences, trees and landscaping. View orientation shall be maintained by audio commentary to help explain what is shown on the recording.

Two (2) copies of the video shall be furnished to the Owner on a flash drive. Video recording shall be performed by a reputable company meeting the approval of the Owner, in the presence of a representative of the Owner, and shall be performed prior to the commencement of construction. The video recording shall serve as a basis for establishing damage that has occurred because of construction operations.

This work will be paid for at the contract Lump Sum price for Preconstruction Video Recording, which price shall be payment in full for the work as specified herein.

SP 4. BRUSH CLEARING

This work shall be performed in accordance with the applicable portions of Section 201 of the IDOT Standard Specifications for Road and Bridge Construction, except as modified herein or in the plan set. This work shall consist of the clearing of all areas categorized as brush clearing in the plans to the requirements of the specifications.

WORK REQUIREMENTS AND METHODS

This work shall consist of the removal of all trees and brush, to facilitate access, seeding, and restoration operations. Brush clearing shall consist of the removal of all shrub and vine species within designated areas of the project in a manner governed under this specification. All woody material shall require removal and disposal governed under Article 202.03 of the Standard Specifications. Stumps shall be ground out, and all tree debris (branches, truck, and roots) shall be disposed of off-site.

The Brush clearing shall be the removal of all shrubs and vines, and may be performed with chainsaws, clearing saws, low ground pressure excavator, bulldozer, forestry vehicle; forestry tractors or tracked skid steer, tracked timber harvester, or tracked feller-buncher for cutting and moving brush. All other operator mechanized equipment applicable for cutting shrubs shall only be permitted upon approval from Engineer. All resultant woody debris generated by brush clearing operations shall be collected and transported by approved operator mechanized equipment for the construction into brush piles for onsite or for removal and disposal from the site.

METHOD OF MEASUREMENT

This work shall be measured for payment in place in square feet (SF).

This work shall be paid for at the contract unit price per square foot (SF) for BRUSH CLEARING, which shall include all labor, equipment, and materials necessary to complete the work as specified.

SP 5. DEWATERING

The proposed channels will need to be dewatered to relatively dry conditions to maintain suitable working conditions for the proposed improvements. This work shall consist of providing labor, tools, equipment, and materials necessary to dewater and bypass flow from the storm sewers. A pumping system may be utilized to allow for the required work to be completed.

CONSTRUCTION REQUIREMENTS

All perimeter erosion barriers, temporary erosion control barrier and other erosion control measures shall remain in place until the entire site is stabilized. The Contractor shall submit a Dewatering Plan to be reviewed and approved by the Engineer prior to implementing the provisions of the plan and prior to commencing work in the marsh.

Work in the marsh should be timed to take place during low or no-flow conditions. Low flow conditions occur when flow is at or below the normal water elevation.

Water shall be isolated from the work area using non-erodible materials. Acceptable practices include but are not limited to: inflatable bladders, sandbags, geotextile wrapped rip rap and fabric lined basins. Under no circumstances are earthen cofferdams or other practices that would result in a release of sediment into waters of the U.S. acceptable. This must be constructed from upland areas.

If bypass pumping is deemed necessary by the Engineer, the intake hose shall be placed on a stable surface or floated to prevent sediment from entering the hose. The bypass discharge shall be placed on a non-erodible, energy dissipating surface prior to rejoining the stream flow and shall not cause erosion. Filtering of bypass water is not necessary unless the bypass water has become sediment laden as a result of the current construction activities.

During dewatering, all water must be filtered to remove sediment. Possible options for sediment removal include baffle systems, anionic polymers, dewatering bags, or other appropriate methods. Construction of a sump pit shall be included in this work per details and at the location indicated on the plans. Water shall have sediment removed prior to being re-introduced to the downstream waterway. A stabilized conveyance from the dewatering device to the waterway must be identified. Discharge water is considered clean if it does not result in a visually identifiable degradation of water clarity.

The portion of the side slope that is above the observed water elevation shall be stabilized as specified in the plans prior to accepting flows. The substrate and toe of slope that has been disturbed due to construction activities shall be restored to pre-construction conditions and fully stabilized prior to accepting flows. Please see the storm water pollution prevention plan for all construction details.

MEASUREMENT AND BASIS OF PAYMENT

This work shall be measured for payment in LUMP SUM. This work will be paid for at the contract unit price per LUMP SUM for DEWATERING, which includes all materials, equipment and labor necessary for installation, maintaining, and removal of materials and equipment and temporary bypass pumping.

SP 6. WOOD ACCESS MATTING

Contractor shall provide wooded mats comprised of a minimum dimension of 6 inch (W) x 6 inch (D) timbers x 12 feet long for total mat width that are bound together by cable or other acceptable means in variable lengths to be placed as Ground/Root Protection as shown on the plans or where directed by the Project Engineer. These wooden timber mats are to be used to protect the drainageway and provide access routes for vehicles and/or equipment is planned and/or where further ground protection is necessary.

METHOD OF MEASUREMENT

WOOD ACCESS MATTING shall be measured for payment per foot. Pruning for safety and equipment clearance will not be measured for payment and will be considered incidental to the contract.

This work will be paid for at the contract unit price per FOOT for WOOD ACCESS MATTING.

SP 7. TEMPORARY CONTROLS (OF THE TYPE SPECIFIED)

This work shall include all labor, materials, and equipment necessary for completion of items associated with the temporary erosion control measures utilized during construction until final stabilization. Items include silt fence, inlet filters, and stabilized construction entrance. Contractor shall coordinate with the Engineer to address all maintenance, repair, or installation of erosion control practices as noted on the SWPPP inspection reports. SWPPP inspections will be completed weekly and after each rainfall event ½” or greater.

References - The following is a list of specifications or regulations which may be related to this section:

A. Illinois Department of Transportation, Standard Specifications for Road and Bridge Construction, latest edition (IDOT SSRBC).

a. Section 280

b. Section 282

c. Section 1004

d. Section 1080

e. Section 1081

B. AISWCD, Illinois Urban Manual, latest edition

a. Standard 813

b. Standard 814

c. Standard 830

d. Standard 862

e. Standard 912

f. Standard 917

g. Standard 930

h. Standard 950

QUALITY ASSURANCE

An approved copy of the stormwater pollution prevention plan shall be kept onsite at all times.

A. Provide at least one person who shall be present at all times during execution of this portion of the work and shall be thoroughly familiar with the type and operation of equipment and techniques being used. Said person shall direct all work performed under this section.

B. The Contractor shall comply with all applicable regulations. It is the Contractor’s responsibility to inform all subcontractors of the requirements of this section.

C. All materials and workmanship shall meet or exceed applicable federal, state, county and local laws and regulations.

D. In the event of a conflict between the requirements of these Specifications and the law, rules or regulations of Federal, State or Local agencies, the more restrictive shall govern.

E. The Contractor shall be responsible for all soil erosion and sediment control inspections, record keeping, and other requirements, including maintenance of the project’s Storm Water Pollution Prevention Plan (SWPPP) for compliance with National Pollution Discharge Elimination System (NPDES) requirements. It is solely the responsibility of the Contractor to understand and comply with all regulations. Any soil erosion and sediment control related fines or other penalties imposed upon the Owner as a result of the Contractor’s action(s) or inaction(s) shall be the responsibility of the Contractor.

PRODUCTS

Rolled Erosion Control Product A. Rolled Erosion Control Product shall consist of a 12” diameter log-type rolled erosion control product with 2”x 2” wooden stakes.

Floating Silt Curtain A. Floating silt curtain materials and installation shall at a minimum meet the conditions of the Illinois Urban Manual Practice Standards No. 617 “Floating Silt Curtain”.

Stabilized Construction Entrance A. The stabilized construction entrance shall consist of a minimum 6”-thick coarse aggregate pad underlain by geotextile fabric, at the sizes and locations shown on the plans.

B. The aggregate shall meet IDOT Coarse Aggregate Gradation CA-1.

C. The fabric shall consist of synthetic polymers composed of at least 85 percent by weight polypropylene, polyesters, polyamides, polyethylene, polyolefins, or polyvinylidene-chlorides.

D. The geotextile shall be free of any chemical treatment or coating that significantly reduces its porosity. Fibers shall contain stabilizers and/or inhibitors to enhance resistance to ultraviolet lights.

EXECUTION

A. Prior to the commencement of land disturbing activities, an on-site pre-construction meeting must be held with the Contractor, Engineer, and regulatory agencies having jurisdiction over soil erosion and sediment control.

B. The Contractor shall provide additional soil erosion and sediment control measures as necessary, and at no additional cost to the contract, to ensure compliance with all local, county, state, and federal pollution control regulations unless specifically otherwise stated herein. The work shall not be construed as compliant if the Engineer does not direct the Contractor to provide these measures. Compliance shall be determined solely by the agency responsible for enforcement of any such regulations.

C. The Contractor’s methods and sequencing of vegetation removal, demolition, earthwork, and other land disturbing activities shall be such as to minimize soil erosion and sedimentation.

D. Fills shall be placed and compacted in such a manner that sliding and erosion is minimized.

E. All work shall be conducted in such a manner as not to divert water outside of the project limits, including onto adjoining property, without prior written permission from the Engineer.

F. The Contractor shall maintain all temporary soil erosion and sediment control measures in good working order throughout the duration of the work until such time as permanent stabilization measures have been established. Contractor shall remove any accumulated sediment and properly dispose of same prior to removing temporary soil erosion and sediment control measures. Temporary erosion and sediment control measures shall be removed within 30 days of final stabilization.

Rolled Erosion Control Product A. Stakes for rolled erosion control products shall be driven into the ground a minimum distance of 18”. Maximum distance between stakes shall be four feet (4’).

Floating Silt Curtain A. Floating silt curtain materials and installation shall at a minimum meet the conditions of the Illinois Urban Manual Practice Standards No. 617 “Floating Silt Curtain”.

Construction Entrance A. The aggregate shall be spread into place in a manner to produce a reasonable homogeneous stable fill that contains no segregated pockets of large or small fragments or large unfilled space caused by bridging of the larger fragments.

B. No compaction will be required beyond that resulting from the placing and spreading operations.

C. The entrance shall remain in place and be maintained until the disturbed area is stabilized. After removal, the Contractor shall restore the disturbed area.

Clean-Up, Removal and Repair A. After temporary soil erosion and sediment control is complete, Contractor shall remove any remaining materials, debris, trash, etc.

B. Contractor shall remove all temporary soil erosion and sediment control measures after permanent erosion control measures have been established and after approval from the Owner.

C. Contractor shall repair any damages caused by construction operations during completion of the work described in this Section.

MAINTENANCE

A. Temporary sediment control systems shall be left in place with proper maintenance until permanent erosion control is in place and working properly with Owner approval.

B. All erosion control measures shall be inspected weekly and after each one-half inch (1/2”) rain event.

C. All adjacent streets shall be kept clear of debris. Streets shall be inspected daily and cleaned when necessary and as directed by the Owner.

D. All maintenance activities recommended by the manufacturer for a specific product shall be complete in addition to the maintenance activities noted in this section.

METHOD OF MEASUREMENT

ROLLED EROSION CONTROL DITCH CHECK shall be measured per foot, CONSTRUCITON ENTRANCE shall be measured per square yard, and FLOATING SILT CURTAIN shall be measured per each as shown on the plans or as approved by the Engineer.

This Work shall be paid for at the contract unit price per foot for ROLLED EROSION CONTROL DITCH CHECK, unit price per square yard for CONSTRUCTION ENTRANCE, and unit price per each for FLOATING SILT CURTAIN.

SP 8. EARTH EXCAVATION

Add the following paragraph to the end of Article 202.01 of the Standard Specifications:

“The Contractor shall be responsible for the legal disposal of all excavated material and the associated costs. These costs shall include but are not limited to any required testing, lab analysis, certification by a licensed professional, and the state and local tipping fees associated with meeting the requirements of Public Act 96-1416.”

SP 9. ALTERNATE #1 STORM SEWER REMOVAL & REPLACEMENT

This work shall be in accordance with section 551 of the Standard Specifications except as modified herein. Removal of flared end sections shall be included in this item. This work shall consist of furnishing and installing storm sewer pipe of the type and size specified for replacement or extension, as specified on the Plans. The storm sewer will be in accordance with the applicable portions of Section 550 of the Standard Specifications.

METHOD OF MEASUREMENT

This work will be measured for payment for in linear feet (LF) in place. The storm sewer shall be of material Class Type 1, of the diameter specified.

This work shall be paid for at the contract unit price per linear feet (LF) for ALETRNATE #1: STORM SEWER REMOVAL & REPLACEMENT which price shall include the storm sewer removal, the storm sewer, installation which shall include all labor, equipment, materials, and disposal necessary to complete the work as specified.

SP 10. ALTERNATE #1 FLARED END SECTIONS

This work shall consist of furnishing, transporting, installing, and connecting the specific end section indicated in the plans to an existing or proposed pipe.

MATERIALS AND INSTALLATION

The precast reinforced concrete shall be installed and follow the material requirements of Article 542.07 of the Standard Specifications. The type of end treatment is indicated in the plans.

METHOD OF MEASUREMENT AND BASIS OF PAYMENT

This work will be measured and paid for at the contract unit price per each (EACH) for FLARED END SECTIONS of the size and material specified. This price shall include the end section, installation and all other materials, labor, tools, equipment, and incidentals necessary to complete this item of work.

SP 11. ALTERNATE #1 REMOVE & REPLACE BITUMINOUS PATH

This work shall consist of removing the existing bituminous path in locations where the storm sewer will be replaced, furnishing, transporting, and installing the bituminous path in areas indicated in the plans.

METHOD OF MEASURE

The materials will be measured for payment in place by lineal foot along the hot-mix asphalt surface course and the area computed based on the width as measured in place. Unit of Measure: SQUARE YARD (SY)

PAYMENT

Payment will be made for costs associated with installing hot-mix asphalt surface course, as defined SSRBC 406, at the locations shown on the Plans.

SP 12. ROCK OUTLET PROTECTION

The rock outlet protection shall consist of rock placed within excavated and stabilized depressional areas at culvert inlet/outlet locations and to reduce velocities.

MATERIALS

Cobble Cobble material shall comply with applicable portions of Sections 281 and 1005 of the Illinois Department of Transportation’s “Standard Specifications for Road and Bridge Construction,” latest edition, except for the statements in Section 1005.01(a) which begin “Field stone or boulders will not be accepted.” The cobble shall be well graded and have a gradation similar to a mixture of gradation designation RR3 in Section 1005.

Cobble RR-3 Gradation or approved equal D100 = 9 inch D50 = 5 inch D10 = 3 inch

Non-Woven Geotextile Filter Fabric Non-woven geotextile filter fabric shall be placed to line the bottom of rock outlet protection areas as noted on the plans and details. Non-woven geotextile fabric shall be installed according to manufacturer specifications, which shall include, but not be limited to, removing stumps, stones or sharp objects that may be able to penetrate the fabric, stretching fabric until flat and tight, and overlapping adjacent fabric sections.

INSTALLATION

Excavate around storm sewer outlets to an approximate 1.5-ft depth as depicted in the plans and detail to receive screened cobble. Screened cobble shall be placed around storm sewer outlet pipe and within excavated depression according to rock outlet protection detail to dissipate energy. Locations with rock outlet protection for concrete flared sections are noted on the plans.

Payment shall be measured and paid for at the contract unit price per TON for ROCK OUTLET PROTECTION. Non-woven geotextile filter fabric shall be incidental to the cost of ROCK OUTLET PROTECTION.

SP 13. NATIVE SEEDING

The permanent seeding includes the seeding of various mixes.

PERMANENT SEEDING SCHEDULE

Permanent seed installation shall be performed immediately in areas where all work is complete.

MATERIALS

All seed shall be healthy, and true to species and variety. All materials shall be provided by a certified nursery and shall be free of pests and disease. Materials shall meet the requirements of the following Articles of Section 1000 – Materials:

The seed mixes shall be supplied in pounds of Pure Live Seed (PLS) for grass species. Native grass and forb seed species will be local genotype and will be from a radius of 150 miles from the site.

Proof of origin shall be presented to the Engineer for approval prior to any plant installation. Seed will be specified as ‘weed free’ according to the Association of Official Seed Analysis: Rules for Testing Seeds, Journal of Seed Technology, 1991.

EQUIPMENT

Equipment shall meet the requirements of the following Articles of Section 1100 – Equipment:

SEEDBED PREPARATION

The Contractor is required to submit seedbed preparation material method in writing to the Engineer one week prior to commencement for approval.

Preparation shall include application of herbicide applied by a licensed herbicide applicator to effectively control weed species without damaging desirable vegetation. The seedbed shall be free of weeds, and seeding shall occur no less than 14 days after herbicide application.

For bare earth seeding, Contractor shall remove clumps, stones, roots, and sticks prior to seedbed preparation activities. Contractor shall prepare the seedbed with a disk or unique rake (harrow) to reduce clod size to a maximum diameter of 1-inches and eliminate rivulets, gullies, crusting, and caking. The disk shall be in good condition with sound, unbroken blades and weighted as necessary to achieve a minimum 3-inch tillage depth.

Following disking of all bare earth seeding areas, Contractor shall prepare the seedbed further with a unique rake or harrow to reduce clod size and create a smooth and level seedbed. Working wet soils shall not be conducted. Following these seedbed preparation activities, the ground surface shall have minimum compaction, be smooth and level, and be free of debris to promote good seed-soil contact.

SEEDING CONDITIONS

Contractor shall examine the grade, verify the elevations and water levels, observe the conditions under which work is to be performed, and notify the Engineer of unsatisfactory conditions. Proceeding with the work constitutes acceptance of existing conditions, including current water levels and soil condition. Seed shall not be sown until the seedbed has been approved by the Engineer.

SEEDING METHODS

No seed shall be sown during high winds, rain events, or when the ground is not in a proper condition for seeding, nor shall seed be sown until the purity test has been completed for the seeds to be used, and shows that the seed meets the noxious weed seed requirements.

Prior to starting work, seeders, trailers, and interseeders shall be cleaned (free of any previous seed, soil, or plant material, including tires), calibrated and adjusted to sow seeds at the required seeding rate. Equipment shall be operated in a manner to ensure complete coverage of the entire area to be seeded or interseeded.

For the native seeding areas, it is anticipated that seed will be broadcast on the surface using an ATV or by hand due to the limited size and accessibility. Following seeding, the surface will be raked by hand to incorporate the seed into the soil.

SEEDING MIXTURES

Native species must be local genotype and be from a radius of 150 miles from the site. The seeding mixtures shall be installed in locations designated on the plan and as directed by the Engineer. The native seed mixtures are as follows:

Temporary Cover Crop

All native seeded disturbed areas shall include a temporary cover-crop.

Avena sativa shall be used in areas that are planted prior to October 15. Regreen or eq. shall be used in all native areas planted between October 15 and November 15.

Shallow Emergent Seed Mix

SPECIES SUBSTITUTIONS

Prior to installation, the Engineer shall review any species substitutions and reserves the authority to deny use of any species if deemed inappropriate for the site. Any species substitutions and/or change in quantity shall be discussed and approved by Engineer. Contractor shall plan on attending one (1) on-site pre-planting meeting to evaluate hydrologic conditions and discuss overall plant installation approach. At the pre-planting meeting, Contractor shall provide a plant installation work plan that documents the anticipated plant installation logistics, plant installation schedule (plant delivery schedule) and any proposed changes to plant species and/or quantities as a result of observed site conditions.

NOTIFICATION & DOCUMENTATION

Contractor shall notify Engineer at least two working days prior to seed installation and indicate the seed installation method to be used. After completion of seeding, Contractor shall provide the Engineer with copies of all seed receipts and labels, notated with the date of seed installation, seed origin, % PLS, and conditions under which the seeding was performed.

PERFORMANCE STANDARDS

Contractor shall meet all applicable seeding performance standards outlined on the final engineering plans.

This work shall be paid for at the contract price per acre for NATIVE SEEDING (OF THE MIX SPECIFIED), and shall include all necessary labor, materials, and equipment to complete the work.

SP 14. EMERGENT PLUGS

This work shall consist of furnishing, transporting, and installing and protecting the container plants as shown on the Plans and as directed in the field by the Project Engineer. The planting will be completed in Summer 2022 as directed by Project Engineer.

MATERIALS

All plug sizes shall be provided in a 38-cell or 50-cell format with 2” x 5” dimensions and soil/root volume of 11 cu. in., or Project Representative approved equivalent. Plug quality must meet the applicable standards set forth in IDOT Standard Specifications, Article 1081.02 and shall meet the requirements in the applicable sections of American Standard for Nursery Stock (ANSI Z60.1-2004), American Joint Committee on Horticultural Nomenclature "Standardized Plant Names," second edition, 1942 and F. Swink and G. Wilhelm, Plants of the Chicago Region, 1994.

All native species shall be local genotype and origin and shall be from a radius not to exceed 150 miles from the site. Proof of origin shall be presented to the Project Engineer at the site prior to installation.

Immediately following contract award and upon authorization of the Project Engineer, the Contractor shall begin plant material procurement. During the procurement period, the Contractor shall locate sufficient quantities of specified plant materials and set up growing or collecting contracts, if necessary, to ensure that the quantity and quality of plant material will be available during the planting window specified. If specified planting material is unavailable, the Project Engineer shall identify substitutes in writing. Adjustments will be made at no cost to the contract.

The planting stock shall comply with governmental regulations prevailing at the source of supply and the job site. All planting stock shall be nursery propagated in accordance with good horticultural practice. Collected stock or nursery grown wild plants will not be permitted. Planting stocks from which plant propagation is taken may have been wild collected. All planting stock shall be healthy, free of all fungi and bacterial discoloration, and deformities.

All container plant material shall be inoculated with mycorrhizal fungi. Container plants shall exhibit root growth sufficient to hold all soil intact when removed from container.

Plants shall be shipped with legible labels stating correct name and size of plant, securely attached to individual flats or bundles of plants. Shipping shall be scheduled to minimize on-site storage of plants. Planting stock shall not be shipped until the planting preparations have been completed. The Contractor shall notify the Project Engineer of all delivery times and subsequent plant deliveries. The Project Engineer shall be notified at least 48 hours prior to shipping.

If delays beyond the Contractor's control occur after delivery, plants shall be kept watered and protected from sun, wind, and mechanical damage. Dormant materials shall be stored in refrigerated compartment or environmentally controlled structures only, as approved by the Project Engineer, until plant installation. Plants shall be handled at all times in accordance with the best horticultural practices. Plants handled otherwise will be subject to rejection by the Project Engineer. Plants shall not be bent, stacked or bound in a manner that deforms roots or destroys natural shape. The Contractor shall examine and verify the acceptability of the job site.

PLUGGING PLAN

The Contractor shall notify the Project Engineer no less than 24 hours prior to plugging activity. The plug plan indicates the planned installation location of the various plug types and shall be based upon the approved plan sheet. Plug installation shall commence only after the Project Engineer has no objections to the finished grading.

PLANTING CONDITIONS

The container plant mixtures shall be installed in locations designated on the plan in which the anticipated average water level is appropriate for the individual plant species.

During the plant establishment period, Contractor may need to manually irrigate the planting area(s) to provide suitable hydrologic conditions as needed to sustain the installed plants prior to refilling of the lake. At the same time, plant installation is prohibited when water levels are greater than 3” above the anticipated average water levels unless approved by the Project Engineer. Please note that plant installation may be postponed following a flooding event until water levels return to suitable conditions.

PLANTING TIMING

Planting activities for plants shall be performed no earlier than May 15 and no later than August 15 under favorable conditions (i.e., water levels as specified). Supplemental watering may be necessary to ensure survival at no additional cost to Village.

PLANTING PROCEDURES

The Contractor shall notify the Project Engineer if conditions detrimental to plant growth are encountered such as rubble fill, adverse drainage conditions, or obstructions. The Contractor shall not proceed with the work until unsatisfactory conditions have been corrected or resolved in writing by the Project Engineer. The Project Engineer reserves the right to adjust plant material locations, without adjusting plant quantities, to meet field conditions, at no additional cost to the contract. Plant materials shall be subject to final approval by the Project Engineer at the site prior to installation.

Holes for plugs shall be dug in locations shown in the plans or adjusted by the Project Engineer in the field. Holes shall be dug with a trowel, spade, dibble planting bar, or implement approved by the Project Engineer. Holes shall be of a minimum depth and diameter of 1.5 times the plug size to accommodate the plug without damage. Plugs should be pushed deep enough so they meet the surrounding grade and have 1/4 inches of cover to cap the plug soil medium to reduce evapotranspiration. Once planted, the hole shall be backfilled with existing material. When planting of an area has been completed, the area shall be cleared of all debris, soil piles, and containers within one day. Plant protection measures in the form of a goose grid barrier shall be provided throughout all plugged areas. The goose grid barrier shall consist of green fencing with braided rope or twine throughout each enclosure.

SPECIES SUBSTITUTIONS

Prior to installation, the Project Engineer shall review any species substitutions and reserves the authority to deny use of any species or quantity if deemed inappropriate for the site. Any species substitutions and/or change in quantity shall be discussed and approved by the Project Engineer during the pre-planting site meetings as specified below.

NOTIFICATION & DOCUMENTATION

Contractor shall notify the Project Engineer two working days prior to the start of planting activities and all subsequent plant deliveries. All plant material must be approved by the Project Engineer with plant material receipt prior to installation to be eligible for payment.

PLANT CARE

During the establishment period, the Contractor shall properly care for all plants including weeding, watering, debris removal, or other work which is necessary to maintain the health and satisfactory appearance of the plantings. All requirements of proper care during the period of establishment shall be considered as included in the cost of the contract and shall be performed within 5 days following the notification by the Project Engineer.

After the establishment period has been completed, a maintenance period will be in effect until Final Project Acceptance. General Maintenance tasks during this period shall include additional watering, weeding, and mulch maintenance.

Additional watering shall be performed a minimum of four (4) times during each of the months of April through October. The Project Engineer may direct the Contractor to adjust the watering rate and frequency depending on weather conditions. The plants to be watered and the method of application will be approved by the Project Engineer. The Contractor will not be relieved in any way from the responsibility for unsatisfactory plants due to the amount of watering.

PERFORMANCE STANDARDS

Contractor shall meet all applicable planting performance standards outlined in the PERFORMANCE STANDARDS special provision.

PLANT SPECIES

The following list includes the species and quantities that shall be installed by the Contractor in the planting areas as shown on the planting plan.

Emergent Plugs (14,000/ACRE)*

This work will be paid for at the contract unit price per EACH plug for EMERGENT PLUGS and shall include all labor, equipment, and materials necessary to complete the work as specified. Payment of 90% of the contract unit price will be made following receipt of the documentation specified above (i.e., packing slips) and that the planting was completed in accordance with these specifications as approved by the Project Engineer.