Attachment 2-Special Provisions-Inman Creek.PDF

Inman Sanitary Sewer Improvements Project No. 2022PW0049

JOB SPECIAL PROVISIONS TABLE OF CONTENTS

The following JSP’s were prepared by:

Crawford, Murphy & Tilly, Inc (CMT) Engineering Consultant

1631W. Elfindale Springfield, MO 65807

The Bid Documents intended to be authenticated by my seal are limited to:

JSP–01 Additional Insured JSP–02 Control of Work JSP–03 Working Hours and Street Closures - Final JSP–04 Certified Payroll Submittals JSP–05 Contact Time, Liquidated Damages, and Prevaling Wage JSP–06 Commencement of Work and NTP JSP–07 Submittals JSP–08 Utility Coordination JSP–09 Mobilization and Bonds JSP–10 Tree Preservation and Construction Fencing JSP–11 Stored Materials - Final JSP–12 Erosion and Sediment Control Certification JSP–13 Abandon Existing Manhole JSP–14 Flexamat Vegetated Block Mat JSP–15 Impervious Trench Seal JSP–16 Concrete Drainage Channel JSP–17 Connection to Existing Manhole JSP–18 Erosion Control Blanket JSP–19 Temporary Seeding JSP–20 Bypass Pumping

Job Special Provision-1 – Additional Insured

1.0 DESCRIPTION. This JSP identifies any additional insured (as required by

General Condidtions-2-5.03) that need to be listed on the certificate of insurance.

2.0 ADDITIONAL INSURED. The following are required additional insured:

City of Springfield – Environmental Services, P.O. Box 8368, Springfield, MO 65801

3.0 METHOD OF MEASUREMENT & BASIS OF PAYMENT. All cost associated with this JSP are considered incidental to the contract; no direct payment will be made.

Job Special Provision-2 - Control of Work, Inspection, and Testing

1.0 DESCRIPTION. This JSP describes which provisions control the overall project, which specifications controls which work items, and inspection of the project.

2.0 PROJECT DESCRIPTION. Project consists of installation of approximately 3,779

LF of 18” sanitary sewer, 28 manholes, and associated appurtenances.

2.1 Construction Administration will be by one contract with the City of Springfield and controlled by the City of Springfield General Conditions & Technical specifications for Public Improvements adopted July 2025 or the most recent revision thereafter.

3.0 CONSTRUCTION INSPECTION. A City of Springfield Public Works inspector will be responsible for coordinating the daily inspection of all construction and review of pay estimates. In addition to General Condition GC-2-13.02 representatives for USACE, DNR, EPA, and the City may make inspections of the work and that the contactor shall grant them access to all parts of the work. If any other agencies come on site for inspections the Contractor shall notify the City of Springfield Inspector and Project Manager IMMEDIEATELY.

4.0 LICENSES, PERMITS, AND CERTIFICATIONS. All licenses, permits, certificates, etc., required for and in connection with the work to be performed under the provisions of these contract documents shall be secured by the Contractor entirely at his own expense.

5.0 COORDINATE WITH OTHERS ON SITE. Contractor shall coordinate with all utilities to determine any scheduling conflicts or construction activity conflicts. See JSPs and plans for additional utility coordination information.

6.0 METHOD OF MEASUREMENT & BASIS OF PAYMENT. All cost associated with this JSP are considered incidental to the contract; no direct payment will be made.

Job Special Provision-3 - Access and Street Closures

1.0 DESCRIPTION. This JSP specifies requirements for:

(1) Maintaining residential drive access,

(2) Lane/traffic control closure notifications

2.0 ACCESS AND CLOSURES.

2.1 Residential Drive Access: Any means and methods required to maintain access for homeowners beyond what is included within these documents or the plan set will be the responsibility of the Contractor at no direct cost to the project. All temporary access including areas in the roadway shall be free from mud, excessive dust, loose rock, and obstructions.

• The Contractor must provide temporary access to any/all residential drives as construction disturbs areas adjacent to these drives. Access for emergency vehicles, and mail delivery must be maintained at all times. In the event that a driveway becomes inaccessible the Contractor shall give at least 72 hours notice prior to closure and shall make every effort to minimize the duration of the duration of closure.

• The Contractor must prepare and submit a Traffic Control Plan to the City’s Public Works – Traffic Division. No closures shall occur until approval from the Traffic Division is obtained.

2.2 Closures: For any and all lane, street, or sidewalk closures proper temporary traffic control must be installed and maintained at all times during closures. If additional traffic control is required to accommodate Contractor operations, it shall be the contractor’s responsibility to submit a temporary traffic control plan to the Engineer for acceptance and install and maintain that traffic control at no direct cost to the project.

• The Contactor must give the Project Manager or Project Inspector at least five (5) business days of notice before any lane, street, or sidewalk closures occur (if needed).

3.0 METHOD OF MEASUREMENT & BASIS OF PAYMENT: Costs associated with temporary pavement or any other methods utilized to maintain access to driveways (as needed) are considered incidental to the project. Costs associated with access requirements are considered incidental to the project.

Traffic Control for road closure, including the preparation and submission of the plan, is measured and paid in accordance with standard bid item COS 7.7.6.

Job Special Provision - 4 - Certified Payroll Submittals

1.0 DESCRIPTION. This JSP identifies certified payroll requirements for the Contractor to submit certified payroll to the City Inspector assigned to the project.

2.0 PAYROLL. The Contractor shall submit to the Construction Inspector weekly-certified payrolls including any subcontractors. Certified payrolls shall be submitted to the inspector no later than 7 calendar days after the payroll period ends. Failure to comply with timely submittal of payrolls will result in any or all payment being withheld until such time correct certified payrolls are received.

Electronic Payrolls may be submitted with electronic signatures.

Job Special Provision- 5- Contract Time, Liquidated Damages, Prevailing Wages, Retainage

1.0 DESCRIPTION. The Contractor will furnish all supervision, labor, tools, equipment, materials and supplies necessary to complete the contract per plans and specifications by the dates specified below. No time extension will be granted for delay of contract award, weather conditions, utility conflicts, excavating encountered rock, changing excavation quantities, or Contractor scheduling of equipment or construction progress.

2.0 PERIOD OF PERFORMANCE. The Contractor shall be required to complete the project in accordance with General Conditions GC-2-14.07.

2.1 The Contractor shall complete the work within 270 days of the Notice to Proceed.

2.2 The Contractor is required to provide a sufficient work force and construction management so that no time extension will be granted for delay of contract award, weather conditions, utility conflicts, excavating encountered rock, changing excavation quantities, or Contractor scheduling of equipment or construction progress. The Contractor is providing the schedule/calendar days for project completion and therefore it is the duty of the Contractor to ensure that the work will be complete within the Contract Time.

2.3 The Contractor shall have a superintendent or a responsible foreman on the project at all times when construction is in progress. Any claim for extension of time shall be made in accordance with Chapter II of the General Conditions and Technical Specifications for Public Improvements.

2.4 The Contractor shall give the work the constant attention necessary to facilitate the progress thereof, and shall cooperate with the Engineer and other contractors in every way possible. The Contractor shall conduct his work so as not to interfere with or hinder the progress or completion of the work being performed by other contractors or utilities. The Contractor shall schedule his work and shall place and dispose of the materials being used so as not to interfere with the operations of other contractors. Pavements over which hauling is performed shall be kept clean of spilled or tracked on materials at all times.

3.0 SUBSTANTIAL COMPLETION. In accordance with General Condition GC-2-

14.04, substantial completion will be defined as follows.

3.1 The calendar day count may be halted after a final inspection has been made and no further corrections are noted by the Engineer. The project is not considered complete until final acceptance by the City and all exceptions to the Final Inspection are completed.

4.0 LIQUIDATED DAMAGES. Failure or delay in completing the work in the time specified under the contract, or as amended by a contract change order, shall result in liquidated damages being charged and withheld in accordance with General Condition GC-2-14.10, specified in the amount of FIVE HUNDRED DOLLARS ($500.00) per calendar day that the work is not complete.

5.0 PREVAILING WAGE. Contractor will be required to furnish an affidavit to the City stating that he has paid the prevailing wages as set forth in Annual Missouri State Wage Determination No. 29, Section 039, Greene County, filed March 10, 2022, and fully complied with the provisions and requirements of the Missouri State Prevailing Wage Law.

5.1 It is agreed that all labor utilized in the construction of the aforementioned improvements shall be paid a wage of no less than the "prevailing hourly rate of wages" for work of a similar character in this locality, as established at anytime by the Department of Labor and Industrial Relations of the State of Missouri for this project.

5.2 Wage interviews of the contractors’ and subcontractors’ work force will be made at random to verify that the prevailing wage rate is being paid. These interviews may be on site examinations or a questionnaire mailed to the individual. At any time the contractor is found to not have paid prevailing wages, the contractor shall forfeit as a penalty to the city one hundred ($100) dollars for each underpaid worker employed, for each calendar day, or portion thereof such worker is paid less than the said stipulated rates for any work done under this contract.

5.3 The contractor shall post and maintain in a prominent and easily accessible location a clearly legible statement of all prevailing hourly wage rates to be paid to all workers employed by the contractor and each subcontractor in order to execute this contract. It shall be the responsibility of the contractor to notify the Division of Labor Standards when a violation of the law is discovered.

6.0 PAYMENT. The contractor will be paid as follows: On or about the 22nd day of each month, the Project Manager and/or City Inspector will measure and compute the amount of work performed during the month and the value thereof at the contract price. On or about the 10th day of the following month, the contractor shall be paid an amount equal to the value of the work performed, less retainage if applicable.

7.0 RETAINAGE.

The contractor shall be paid an amount equal to the value of the work performed less a retained amount of 5 percent (%) until construction is completed.

Job Special Provision-6 – Commencement of Contract Times & Notice to Proceed

1.0 DESCRIPTION. This JSP modifies General Condition GC-2-2.03 allowing a sixty

(60) calendar day window, following execution date of Contract, for issuance of Notice to Proceed (NTP) from the City. This JSP is considered incidental to the Contract.

2.0 REQUIREMENT This JSP modifies General Condition GC-2-2.03 as per the requirements specified below.

2.1 NOTICE TO PROCEED: Notice to Proceed shall be a formal written notice given by the City to the Contractor for fixing the start date from which contract times will commence to run and on which the contractor shall start to perform the Work under the Contract. Contractor and City shall mutually establish and fix a NTP date at the pre-Construction meeting that is within sixty (60) calendar days following the execution date of the Contract. If no NTP date can be agreed to, the NTP will be issued and will default to sixty (60) days after the contract execution and contract time will begin regardless of the Contractor’s beginning of physical construction activities.

2.2 COMMENCMENT OF WORK: Work can and should begin on fixed NTP date however, prosecution of work will be required to commence under this Contract within seven (7) calendar days after the NTP date, or it shall be considered a delay in completion of work under this Contract.

2.3 COMPLETION OF WORK: Failure or delay in completing the work in the time specified under the contract, or as amended by a contract change order, shall result in liquidated damages being charged and withheld in accordance with General Condition GC-2-14.10, specified in the amount of Five Hundred Dollars ($500.00) per calendar day that the work is not complete.

Job Special Provision-7 – Submittals

1.0 DESCRIPTION: This JSP specifies requirements for Shop Drawings and Samples by adding the following items for a required submittal.

1.1. The Contractor will be required to submit the following to the City and

Engineer of Record for review. No material shall be brought on-site until it has been reviewed and approved for use.

1. Project Schedule – Updated every 2 weeks with critical path depicted and float time shown.

2. Sanitary Items:

• Sanitary Pipe

• Sanitary Structures (manholes, water-tight lids, eccentric cone, etc.)

• Sanitary Lateral Tees, Pipe, and Related Appurtenances

3. Landscape Items:

• Seed Mix

4. Erosion Control Items:

• Aggregate gradation for riprap

5. Traffic Control Plan

2.0 REQUIREMENT. The City reserves the right to reject any material and/or withhold payment for not meeting the requirements shown within this Contract.

3.0 METHOD OF MEASUREMENT & BASIS OF PAYMENT. All cost associated with this JSP are considered incidental to the contract; no direct payment will be made.

Job Special Provision-8 – Utilities

1.0 LOCATE UTILITIES: The Contractor shall make every effort to locate all underground pipelines and conduits by contacting owners of underground utilities by prospecting or otherwise in advance of trench excavation operations. Certain pipelines, water mains, gas lines, and other existing underground and above-ground installations and structures in the vicinity of the work to be done hereunder are indicated on the plans according to the information made available to the City. The City does not guarantee the accuracy or completeness of such information, however.

2.0 SERVICE CONNECTIONS: Connections from the mains to the houses for sanitary sewers, water and gas services, and other utility lines may not be indicated on the plans. Any conflict with these service lines from the house to the main, not specified as part of the utilities relocations, will be the responsibility of the Contractor to either relocate or work around at no cost to the project.

3.0 CONSTRUCTION DELAYS: Any delay or extra cost to the Contractor caused by utilities or pipelines or other underground structures or obstructions not shown by the plans, or found in locations different than those indicated, shall not constitute a claim for extra work, additional payment, additional time, or damages.

4.0 RESPONSIBLE FOR DAMAGES: The Contractor will be solely responsible for any or all damages whether direct, indirect, or consequential to underground or above-ground utilities and pipelines and the surroundings and shall indemnify and hold harmless the owner and Engineer for any and all claims or judgments whenever made as a result of his actions.

5.0 CONFLICTS AND RELOCATION PLANS: Plans have been submitted to City

Sanitary Sewer, City Utilities Gas, Water, and Electric, Mediacom, AT&T, Windstream, Empire Electric, Verizon and CenturyLink for review.

5.1 City Utilities Electric

Contractor shall refer to the following CU Electric contacts:

Where there is excavation required near existing City Utilities power poles, Contractor shall contact City Utilities [Jason Smith @ 417-831- 8731] at least two business days prior to excavation, to allow time to determine pole support requirements [if any] and to plan/schedule to provide pole support accordingly.

Contractor shall familiarize themselves with The Missouri Overhead Powerline Safety Act. If necessary, Contractor shall contact City Utilities

Developer Services [@ 417-831-8888] a minimum of ten days in advance, to make arrangements for line cover.

5.2 City Utility Gas & Water It shall be the contractor’s responsibility to coordinate with city Utilities. Contractor shall contact City Utilities [Jacob Caudle @ 417-831-8362].

5.3 AT&T It shall be the contractor’s responsibility to coordinate with AT&T

[Scott Hall @ 417-849-8265]. Any and all AT&T relocations and temporary splices shall be coordinated with AT&T.

5.4 MediaCom It shall be the contractor’s responsibility to coordinate with

MediaCom [Kyle Keller @ 417-496-8577]. Any and all MediaCom relocations and temporary splices shall be coordinated with MediaCom.

5.5 Bluebird, Windstream, Springnet, and CenturyLink indicated that they did NOT have any facilities in the proposed area of work.

5.6 If additional or unexpected utility conflicts do occur, or if scheduled relocations are delayed, the Contractor shall be responsible for coordinating with the affected utility owner to resolve the conflict and maintain progress on the project. No time extensions will be granted for associated delays.

6.0 EASEMENTS: In some areas, utility construction is designed very close to the edge of street right-of-way. If no additional easement is provided in these areas, the Contractor shall use caution and special construction methods to prevent encroachment on or damage to private property.

7.0 DAMAGE TO PRIVATE PROPERTY: At locations where the Contractor must work on private property for service line installation or in easements for relocations of facilities, the Contractor shall be responsible for all damages and repairs. All restoration of private property is to meet the satisfaction of the property owner.

8.0 DEPTH OF RELOCATIONS: All utility reconstruction or relocations done by the

Contractor shall be sufficient to provide the required clearances with all new construction, along with any additional clearances that may be required for construction, compaction, sub-grade preparation, safety, adjustments, etc. If newly-constructed or relocated utilities require additional relocations, all associated costs shall be the responsibility of the Contractor.

9.0 PAVEMENT REPLACEMENT AND TREE TRIMMING AND REMOVAL FOR

UTILITY RELOCATIONS: All costs associated with removal and replacement of pavement, curb and gutter, sidewalk, area restoration, or for tree trimming or removal necessary for utility relocations outside the new pavement area shall be incidental to the project.

10.0 CONTACT PERSONS FOR UTILITY RELOCATIONS: The Contractor is responsible for coordinating with affected utilities. Utility contact persons are:

A T & T Distribution Scott Hall 417-849-8265

A T & T Transmission Justin Rahm 678-231-5933

City Utilities Water & Gas Jacob Caudle 417-831-8362

City Utilities Electric Jason Smith 417-831-8731

City Utilities - Springnet Bethany Forrester 417-831-8529

Lumen (Centurylink) Bobby Kennedy 417-860-4526

MediaCom Kyle Keller 417-496-8577

City of Springfield Sanitary Sewer Matt Taylor 417-864-1934

Zayo Fiber Jeff Beggs 417-655-3870

BlueBird Fiber David Frazier 816-237-2125

Liberty (Empire) Electric Chris Schafer 417-773-3601

Verizon (MCI) Bryan Burger 816-204-4494

Windstream Jerome Light 217-254-0252

11.0 REMOVAL OF EXISTING UNDERGROUND UTILITIES: No direct payment will be made for the removal of any existing utility pipe, line, cable, main, or structure.

These removal costs are to be included as part of the unit cost of the item being installed. Any capping, draining, or gas residue will be the responsibility of the Contractor.

12.0 STREET AND DRIVEWAY CROSSINGS FOR UTILITIES RELOCATIONS: All street and driveway cuts are to be immediately restored with compacted backfill and the pavement replaced. Permanent street and driveway repair to be done immediately after backfill or a temporary asphalt patch used for the existing pavement in areas scheduled for future removal. All associated cost with this shall be incidental to the project.

13.0 UTILITY CONSTRUCTION PHASING: The sole authority for determining the utility construction phasing is the Public Works Engineer. Should temporary utility connections be needed, the Contractor will install the connections at the Contractor’s expense.

ALL TREES INDICATED TO REMAIN BY THE CITY SHALL BE PROTECTED

DURING WATER, NATURAL GAS, AND OTHER UTILITY RELOCATIONS.

14.0 METHOD OF MEASUREMENT & BASIS OF PAYMENT. Costs for temporary utility connections not specifically listed as a bid item are considered incidental to the project; no direct payment will be made.

Job Special Provision-9 – Mobilization and Bonds

1.0 Mobilization, Bonds: This bid item is a lump sum amount. It shall consist of acquiring permits, bonding, preparatory work including preparing schedules, and movement of personnel and equipment to the project.

1.1 Once construction has begun, beyond establishing erosion control measures, construction fencing, and setting traffic control, payment shall be paid in full at the end of the first regular pay period that is at least 30 days after the Notice to Proceed (NTP).

Job Special Provision-10 – Construction Fence & Tree Preservation

1.0 General. The objective of this section is to reduce the negative impacts of construction on trees and specify construction fencing requirements at limits of construction.

2.0 Tree protection measures are intended to guide a construction project to ensure that appropriate Best Management Practices (BMPs) will be implemented in the field to eliminate or mitigate undesirable consequences that may result from construction.

A. Physical injury to trunk and crown

B. Soil compaction in the root zone

C. Severing of roots

D. Smothering roots by adding soil

E. Split and broken branches

F. New exposure to wind and sunlight

2.0 All work shall be performed in accordance with guidelines in the booklet Tree

Protection & Preservation, A Pocket Guide of Best Management Practices, APWA Press, American Public Works Association, July 2012. Copies of this booklet are available for inspection at the Public Works Operations Building, 1010 W. Chestnut Street, Springfield, MO. Copies are also available from the American Public Works Association bookstore:

http://www2.apwa.net/bookstore/detail.asp?PC=PB.A1221

Any tree removal shall be completed between October 1 and April 1.

3.0 RELATED WORK SPECIFIED ELSEWHERE:

3.1 City of Springfield, Missouri, General Conditions and Technical Specifications for Public Improvements, Chapter 3: Earthwork

3.2 City of Springfield, Missouri, General Conditions and Technical

Specifications for Public Improvements, Chapter 16: Temporary Erosion and Sediment Control http://www2.apwa.net/bookstore/detail.asp?PC=PB.A1221

4.0 FENCING: Fencing shall serve multiple purposes: (1) tree protection fencing, (2) construction fencing at limits of construction. Contractor shall install all fencing to conform to:

4.1 Orange vinyl construction fencing, snow fencing, or other similar fencing should be at least 4 feet high and supported by 6’ steel T-posts at 10 feet-on-center spacing along the line of fencing.

5.0 TREE PROTECTION ZONE (TPZ) SIGNAGE: Tree Protection Zone signs shall be supplied by the City. Contractors shall return signs to the City when project is complete.

6.0 PRE-CONSTRUCTION REQUIREMENTS:

6.1 TREE PROTECTION AND PRESERVATION PLAN: Tree Protection and Preservation facilities and notes are included in the plan set. The City shall be notified if any adjustments to this plan is expected or made. Trees within the permanent easement are to be cleared.

6.2 PRE-CONSTRUCTION MEETING: Demolition, grading and general contractors are required to meet with the City’s Urban Forester or Authorized Representative and/or appropriate Consultant at the Project site prior to any phase of site work, clearing or grading to review tree protection measures, enforcement of tree protection zones, review Contractor and Consultant’s responsibilities, field quality control, sequence of work and other items including, but not limited to: construction parking, construction trailers, materials storage, fuel and chemical storage, masonry staging, concrete wash-out, equipment access, haul routes, staging areas, soil and mulch stockpiles, demolition access, and dumpsters. The limits of disturbance (construction staking) must be clearly marked prior to the pre-construction meeting.

6.3 VERIFICATION OF TREE PROTECTION: Site preparation work shall not begin until all tree protection measures have been installed as set forth in the Plans, verified, and approved by the City’s Urban Forester or Authorized Representative and/or appropriate Consultant.

6.4 INSTALLATION OF PROTECTIVE FENCING AND SIGNAGE

1. Tree protection fence is required to enclose and protect as much of the Critical Root Zone (CRZ) as possible. Locate tree protection fence a minimum of 10 (ten) feet outside of dripline.

2. Tree Protection Zone (TPZ) signs provided by the City shall be affixed to the fencing every 100 feet. Signs shall be placed at each end of linear tree protection and 100 feet on center thereafter. For tree protection areas less than 200 feet in perimeter, provide no less than one sign per protection area. Use plastic zip ties to attach signs, top and bottom, securely to T-post.

3. Tree protection fencing and signage shall be erected prior to any demolition, site clearing, grading or construction work and maintained throughout duration of the project. There shall be no violation of the fencing without approval from City’s Urban Forester or Authorized Representative and/or appropriate Consultant.

6.5 PREVENTATIVE ROOT PRUNING: Recommended when roots of

healthy, vigorous, and/or significant community trees designated for protection must be removed.

1. Where excavation or construction within the critical root zone of a tree is necessary and less than 50% of the root system will be affected, root pruning can occur.

2. Cut roots cleanly prior to mechanical excavation near tree to minimize damage to remaining roots and reduce the risk of causing disease, decay and instability.

3. As a temporary measure, place burlap material and/or spread mulch over exposed roots after cuts are made and before soil is replaced. Keep this material damp until backfilled to prevent the fine roots from drying and dying.

4. Proposed root cuts should be marked in the field and reviewed by the City’s Urban Forester or Authorized Representative and/or appropriate Consultant prior to trenching, excavating or cutting to determine the impact on any structural critical roots and the closest point to tree that soil may be disturbed.

5. The Contractor shall arrange for the City’s Urban Forester or

Authorized Representative and/or appropriate Consultant to be on-site during the process to monitor, photograph, and document all root cuts.

6. Root pruning shall occur along or behind the line of a planned excavation and therefore should coordinate with the tree protection fencing.

7. Root pruning can be accomplished with circular saws of varying types and/or a rotary-type stump grinder to a depth of 18” or to the maximum depth of the required grading cut, whichever is less. Saw blades and grinder teeth should be sharpened prior to use.

8. Root pruning can also be accomplished with the aid of a supersonic air tool and a trained operator.

9. The exact location and depth of root pruning will be determined during the pre- construction meeting. Specific equipment and methods will be determined by the City’s Urban Forester or Authorized Representative and/or appropriate Consultant based upon depth and tree impact.

7.0 TREE PROTECTION ZONES (TPZ):

7.1 ACTIVITIES PROHIBITED WITHIN PROTECTION ZONES:

1. Parking vehicles or equipment.

2. Cutting tree roots by utility trenching, foundation digging, placement of curbs, trenches and other miscellaneous excavation or other digging.

3. Soil disturbance, soil compaction or grade change.

4. Do not direct vehicle or equipment exhaust toward protection zones.

5. Prohibit heat sources, flames, ignition sources, and smoking within or near protection zones and organic mulch.

7.1 LIMB PRUNING: Pruning for adequate clearance to accommodate equipment use, temporary site access for vehicles, and other construction activities may be needed prior to commencing work. Pruning may also be necessary to ensure worker and public safety and to safeguard the health and vigor of protected trees.

1. Follow current ANSI A300 Standards for Tree Care Operations –

Tree, Shrub, and Other Woody Plant Management – Standard Practices (Pruning).

2. Never remove more than 25% of a tree’s crown at one time.

3. Use the three cut method to remove large or heavy limbs. If the whole limb must be removed, properly prune to the trunk without cutting into the branch bark ridge. Do not leave a stub or flush cut into the trunk.

4. If only part of a limb must be removed, prune branches to an existing branch of the proper size. The remaining lateral branch must be at least one-half to one- third the diameter of the branch or leader that is being removed.

5. Limbs may be gently lifted and temporarily tied back with rope to allow access or clearance, thus eliminating the need for pruning at all.

6. Pruning shall not be attempted by construction or contractor personnel, but shall be performed by a qualified tree care specialist.

7.2 TREE REMOVAL: No work is anticipated within the Tree Protection Zone.

7.3 MONITORING AND ENFORCEMENT: The City’s Urban Forester or

Authorized Representative and/or appropriate Consultant shall monitor construction sites containing protected trees. Accidental or negligent actions that damage trees may result in a penalty or affect the contractor rating system.

8.0 INJURY MITIGATION: A mitigation program is required if the approved development will cause drought stress, dust accumulation or soil compaction to trees that are to be saved. To help reduce impact injury, one of more of the following mitigation measures shall be implemented and monitored by the City’s Urban Forester or Authorized Representative and/or appropriate Consultant. Any fees associated with injury mitigation will be at Contractor’s expense.

9.0 DAMAGE TO TREES:

9.1 REPORTING: Any damage or injury to trees shall be reported to the City’s Urban Forester or Authorized Representative and/or appropriate Consultant so that mitigation can take place. All mechanical or chemical injury to branches, trunk or to roots over 2 (two) inches in diameter shall be noted in the monthly inspection report as required by the City. Any fees associated with damage mitigation will be at Contractor’s expense.

9.2 APPRAISED VALUE: If a tree is damaged during construction, the City will request a Tree Appraisal from an appropriate Consultant. Any fees associated with this appraisal will be at Contractor’s expense. The value/replacement cost will be determined by adjusting a tree’s basic value by its condition, location, and species using the most recent edition of the Guide for Plant Appraisal, published by the Council of Tree and Landscape Appraisers. The formula used should also be noted.

9.3 MITIGATION:

1. ROOT INJURY: During the excavation process, tree roots greater than 2 (two) inches in diameter that have not been root pruned, shall be cut back to a sound wood lateral root with a hand saw or sharp axe and not ripped with earth moving equipment. The Contractor shall arrange for the City’s Urban Forester or Authorized Representative and/or appropriate Consultant to review any roots over 2 (two) inches that are encountered to determine structural stability of the tree and give final approval for root cutting. All root cuts must be monitored, photographed and documented by the City’s Urban Forester or Authorized Representative and/or appropriate Consultant. The end of the root shall be covered and kept damp. All exposed root areas within the Tree Protection Zone (TPZ) shall be backfilled or covered within 1 (one) hour. Exposed roots may be kept from drying out by temporarily covering the roots and draping layered burlap over the upper 3 (three) feet of trench walls. The material must be kept wet until backfilled to reduce evaporation from the trench walls.

2. BARK OR TRUNK WOUNDING: that occurs during construction shall be reported to the City’s Urban Forester or Authorized Representative and/or appropriate Consultant. Treatment methods shall be performed by an arborist or qualified tree care specialist.

3. SCAFFOLD BRANCH OR LEAF CANOPY INJURY: Remove broken or torn branches back to an appropriate branch capable of resuming terminal growth within 5 (five) days.

10.0 INSPECTION SCHEDULE: The City’s Urban Forester or Authorized

Representative and/or appropriate Consultant shall frequently monitor construction sites containing protected trees and conduct the following required inspections. Inspections shall verify that the type of tree protection is consistent with the standards outlined within this specification. For each required inspection, a monthly inspection report of any change in tree conditions and actions taken shall be provided to the City of Springfield. Inspection reports shall be emailed to the Urban Forester (Troy Powell) at tlpowell@springfieldmo.gov mailto:tlpowell@springfieldmo.gov

11.0 REQUIRED INSPECTIONS:

11.1 PRE-CONSTRUCTION MEETING: Prior to commencement of

construction, contractor(s) shall attend a pre-construction meeting to discuss tree protection with the job site superintendent, grading equipment operators, City’s Urban Forester or Authorized Representative and/or other Consultants.

11.2 INSPECTION OF PROTECTIVE TREE FENCING/PREVENTATIVE

ROOT PRUNING: The Contractor shall call for an inspection of protective tree fencing when it has been erected and any proposed preventative root cuts.

11.3 INSPECTION OF ROUGH GRADING: The Contractor shall call for an inspection of the site when rough grading has been completed.

11.4 END OF PROJECT INSPECTION: The City’s Urban Forester or

Authorized Representative and/or other Consultants may perform inspections of the work site when the channel grading is deemed complete.

11.5 SPECIAL ACTIVITY WITHIN THE TREE PROTECTION ZONE: The

Contractor shall call the project manager when any activity not covered herein will occur in the Tree Protection Zone (TPZ) to schedule a meeting with the City’s Urban Forester or Authorized Representative and/or other Consultants before proceeding with the activity.

12.0 METHOD OF MEASUREMENT & BASIS OF PAYMENT: Tree preservation shall be paid through line item for Tree Protection and shall be paid on a lump sum basis. Cost associated with pruning trees and installing/cleaning up mulch shall be incidental.

This bid item shall include construction fencing requirements at limits of construction (orange vinyl, as specified). This shall include all cost associated with installing posts, fence, excavation, and maintenance of construction fencing.

Payment will be made under:

Item JSP-10 Construction Fencing and Tree Preservation – per LS

Job Special Provision- 11- Stored Materials

1.0 DESCRIPTION. This JSP supplements G.C. Article 14 by allowing for the partial payment of stored materials prior to the completion of construction.

2.0 STORED MATERIALS.

2.1 Materials delivered on site of work and not incorporated in work if suitably stored on the site will be allowed in the Application and Certification for Payment on the basis of one hundred (100%) percent of documented value or 50% of Unit Bid Price (whichever is less), subject to the retainage in effect, providing:

2.1.1 Material has previously been approved through submittal and acceptance of shop drawings conforming to requirements of Article 14 of General Conditions.

2.1.2 Delivery is made in accordance with the time frame on the approved schedule.

2.1.3 Materials, equipment, etc., are property stored and protected from damage and deterioration and remain so. If not, previously approved amounts will be deleted from subsequent pay applications.

2.1.4 The payment request is accompanied by a breakdown identifying the material equipment, etc. in sufficient detail to establish quantity and value.

2.1.5 Stored materials shall be paid on the basis of invoice amount only, less retainage; invoice(s) for stored materials shall be submitted with the request for payment by the 22nd of each month.

2.1.6 Materials stored on site shall be covered by specific insurance naming the City as loss payee in event of damage or loss, in the full amount of the payment request. A Certificate of such insurance shall be provided with the request for payment.

2.2 Materials delivered and stored off-site will be considered for payment as stored materials provided both 14.11 conditions and the following additional conditions are met:

2.2.1 Materials stored offsite shall be stored in a bonded warehouse or other secure facility.

2.2.2 Materials stored offsite shall be segregated from other stored materials and clearly marked for use on the City project.

2.2.3 Materials stored offsite shall be available for inspection by the City at any given time. Photographic documentation will be required with each pay application.

2.2.4 Materials stored offsite shall be covered by specific insurance naming the City as loss payee in event of damage or loss, in the full amount of the payment request. A Certificate of such insurance shall be provided with the request for payment.

2.2.5 Simultaneous with payment being made for materials, the City is granted property rights to the material, including, with reasonable notice, access rights to take possession of and remove said materials from offsite storage should the City have, in its sole discretion, reasonable cause to take such action.

2.3 Payment for stored materials for this project may only include the following materials:

2.3.1 Pipe

2.3.2 Manholes (Frame and covers, cone/flat tops, barrel sections, bases)

JSP-12 Page 1 of 1 7/28/2025

Erosion and Sediment Control Certification

Job Special Provision-12 – Erosion and Sediment Control Certification

1.0 Description

This JSP identifies erosion and sediment control certification requirements for the Contractor.

2.0 Certification.

The Contractor's site superintendent who is the Designated Responsible Person (DRP), as defined in Chapter 16 of the General Conditions and Technical Specifications for Public Improvements, shall have or obtain certification before the issuance of the land disturbance permit through the online training at https://stormwaterone.com/program/your-state/SGF124. Training shall be at the Contractor's expense.

A. The Contractor shall provide documentation showing the DRP has obtained the certification at or before the land disturbance Pre-Permit Meeting or before issuance of the land disturbance permit.

B. In the event the Contractor designates a different DRP during the project, the new DRP shall have or obtain certification and provide documentation of certification to the Inspector for the Water Quality Division within 30 days of being designated.

3.0 Method of Measurement & Basis of Payment.

All cost associated with this JSP are considered incidental to the contract; no direct payment will be made.

https://stormwaterone.com/program/your-state/SGF124

JSP-13 Page 1 of 1 7/28/2025

Abandon Existing Manhole

Job Special Provision- 13 – Abandon Existing Manhole

Abandon Existing Manhole – JSP - 13

This work shall consist of all items required for existing sanitary sewer to be abandoned, cut and cap abandoned sanitary line after new line is in service, plug and abandon existing sanitary sewer line in place, and abandoning existing manhole as shown in detail on Sheet 23 of the plans.

2.0 Construction Requirements.

The Contractor shall abandon the existing manhole as shown on the contract drawings and in conformance with the materials indicated. If located in a paved area, the pavement shall be removed and replaced per detail ST-14.

3.0 Method of Measurement

Measurement of abandon existing manhole shall be made per each.

4.0 Basis of Payment

The accepted quantities of abandon existing manholes will be paid for based on field measurements completed by the Inspector at the unit price bid for the items stated in the Contract. Payment shall include all incidental items necessary to complete the Work including all labor, equipment, and material costs required to fulfill the requirements of the special provision. Incidental items shall include all requirements for cutting and capping abandoned sanitary line after new line is in service, plugging and abandoning existing sewer line in place, and abandoning existing manhole as shown in detail on Sheet 23 of the plans.

Payments will be made under:

Item JSP – 13 Abandon Existing Manhole – per Each.

JSP-14 Page 1 of 5 7/28/2025

Flexamat Vegetated Block Mat

Job Special Provision- 14 – Flexamat Vegetated Block Mat

Flexamat Vegetated Block Mat – JSP-14

This work shall consist of furnishing and placing the system in accordance with this specification and conforming with the lines, grades, design, and dimensions shown on the plans.

2.0 Materials

Flexamat Standard is manufactured from individual concrete blocks tied together with high strength knitted polypropylene bi-axial geogrid.

Each block is tapered, beveled and interlocked and includes connections that prevent lateral displacement of the blocks within the mats when they are lifted for placement.

Tied Concrete Block Mat with Doubled Layered Underlayment shall be Flexamat Standard, manufactured by Motz Enterprises, Inc.

1.1. Blocks. Furnish blocks manufactured with concrete conforming to the cement requirements of ASTM C150 and to the aggregate requirements of ASTM C33. Blocks shall have a minimum weight of 3 lb. per block and placed no further than 2 in. apart. Material weight per square foot shall not exceed 10 lbs. Blocks shall have a 2.25” profile, a flat-top pyramid shape, and a coarse finish without protrusions. Concrete shall have a minimum compressive strength requirement of Table1 and certified by a third party.

Table 1

Concrete Compressive Strength Requirements

Age Required Compressive Strength psi

7 - Day 5000 psi

14 – Day 6000 psi

28 - Day 6900 psi

1.2. Polypropylene Bi-Axial Geogrid. The interlocking geogrid shall be an open knitted fabric composed of high tenacity, multifilament polypropylene yarns knitted and coated in tension with an acrylic based coating which is designed to resist degradation in

JSP-14 Page 2 of 5 7/28/2025 environments with exposure to water and low pH (,4 pH) and high pH (>9 pH). When combined with the revetment mat, this will yield a high tenacity, low elongating, and continuous filament polypropylene geogrid that is embedded within the base of the concrete blocks.

Ensure the geogrid meets the requirements of Table 2.

Table 2

Polypropylene Bi-Axial Geogrid

Property Unit Test Requiremen t

Mass/Unit Area oz/yd2

ASTM

D5261 6.5 oz/yd2

Aperture Size English units Measured 1.4x 1.4 inch

Ultimate Wide Width Tensile Strength (MD x

CMD)

lb/ft

ASTM

D6637

2,055 lb/ft

Elongation at Ultimate Tensile Strength (MD x

CMD)

ASTM

D6637

6%

Wide Width Tensile Strength @ 2% (MD x

CMD)

lb/ft

ASTM

D6637

822 lb/ft

Wide Width Tensile Strength @ 5% (MD x

CMD)

lb/ft

ASTM

D6637

1,640 lb/ft

Tensile Modulus @ 2% (MD x

CMD)

lb/ft

ASTM

D6637

41,100 lb/ft

Tensile Modulus @ 5% (MD x CMD) lb/ft

ASTM

D6637

32,800 lb/ft

JSP-14 Page 3 of 5 7/28/2025

Five-Pick Leno Weave:

This Five-Pick Weave provides added strength and support to the underlayments.

Index Property Units Value

GSM g/m² 118 (-3 ̃ +3)

Density Picks/10cm 62 x 24 (+/- 2)

Warp Strength N/5cm > 350 Warp Elongation % 20 - 50 Weft Strength N/5cm > 280 Weft Elongation % 20 - 50 Warp Shrinkage % < 7 Weft Shrinkage % < 9

Curlex® II:

Curlex II erosion control blanket (ECB) consists of a specific cut of naturally seed free Great Lakes Aspen curled wood excelsior with 80% six-inch fibers or greater fiber length. It is of consistent thickness with fibers evenly distributed throughout the entire area of the blanket. The top and bottom of each blanket is covered with degradable polypropylene netting.

Index Property Test Method Value Thickness ASTM D 6525 0.418 in (10.62 mm) Light Penetration ASTM D 6567 34.6% Resiliency ASTM D 6524 64% Mass per Unit Area ASTM D 6475 0.57 lb/yd2

(309 g/m2) MD-Tensile Strength Max. ASTM D 6818 127.0 lb/ft (1.9 kN/m) TD-Tensile Strength Max. ASTM D 6818 50.9 lb/ft (0.7 kN/m) MD-Elongation ASTM D 6818 28.64% TD-Elongation ASTM D 6818 29.84% Swell ECTC Procedure 89% Water Absorption ASTM D 1117/ECTC 199% Bench-Scale Rain Splash ECTC Method 2 SLR = 6.84 @ 2 in/hr 2,3

Bench-Scale Rain Splash ECTC Method 2 SLR = 7.19 @ 4 in/hr 2,3

Bench-Scale Rain Splash ECTC Method 2 SLR = 7.56 @ 6 in/hr 2,3

Bench-Scale Shear ECTC Method 3 2.6 lb/ft2 @ 0.5 in soil loss 3

Germination Improvement ECTC Method 4 645%

1 Weight is based on a dry fiber weight basis at time of manufacture.

Baseline moisture content of Great Lakes Aspen excelsior is 22%.

2 SLR is the Soil Loss Ratio, as reported by NTPEP/AASHTO. 3 Bench-scale index values should not be used for design purposes.

1.3. Mats will be rolled for shipment. Upon delivery, rolls may be left exposed for up to 30 days. If exposure will exceed 30 days, cover or tarp the rolls to minimize UV exposure.

JSP-14 Page 4 of 5 7/28/2025

Chipping or missing concrete resulting in a weight loss exceeding 15% of the average weight of a concrete unit is grounds for rejection by the engineer. Replace, repair or patch the damaged areas per the manufacturer’s recommendations.

3.0 Performance

Full-Scale laboratory testing performed by an independent 3rd party testing facility with associated engineered calculations certifying the hydraulic capacity of the proposed Tied-Concrete Block Erosion Control Mat meets the following requirements:

Test

Tested Value

Bed

Slope

Soil

Classification

Limiting Value

ASTM

Shear Stress

30%

Sandy Loam

(USDA)

24lb./ft2

ASTM

Velocity

20%

Loam (USDA)

30 ft./sec

4.0 Alternative Products

Such products must be pre-approved in writing by the Engineer prior to bid date.

Alternative product packages must be submitted to the Engineer a minimum of fifteen (15) days prior to bid date. Submittal packages for alternate products must include, as a minimum, the following:

4.1 Alternative Product Properties – Product must be comprised of materials as detailed in Section 2, including both in composition and performance requirements.

4.2 Full-Scale laboratory testing performed by an independent 3rd party testing facility with associated engineered calculations certifying the hydraulic capacity of the proposed Tied-Concrete Block Erosion Control Mat meets the performance requirements listed in Section 3 of this specification.

4.3 A list of 15 comparable projects in terms of project size, application and material dimensions in the United States, where the results of the specific alternative material’s use can be verified and reviewed for system integrity and sustained after a minimum of 10 years of service life.

JSP-14 Page 5 of 5 7/28/2025

5.0 Equipment

Provide the proper equipment to place the mat that will not damage the mat material or disturb the soil subgrade and seed bed.

6.0 Construction

Prior to installing Flexamat Standard, prepare the subgrade as detailed in the plans.

All subgrade surfaces to be smooth and free of all rocks, stones, sticks, roots, and other protrusions or debris of any kind that would result in an individual block being raised more than 3/4 in. above the adjoining blocks. When seeding is shown on the plans, provide subgrade material that can sustain growth.

Ensure the prepared subgrade provides a smooth, firm, and unyielding foundation for the mats. The subgrade shall be graded into a parabolic or trapezoidal shape to concentrate flow to middle of mat or mats.

When vegetation is required, distribute seed on the prepared topsoil subgrade before installation of the concrete mats in accordance with the specifications.

Install mats to the line and grade shown on the plans and per the manufacturer’s guidelines. The manufacturer or authorized representative will provide technical assistance during preparation and installation of the concrete block mats as needed.

Provide a minimum 18 in. deep concrete mat embedment toe trench at all edges exposed to concentrated flows. Recess exterior edges subject to sheet flow a minimum of 6 in.

Provide fastening or anchoring as recommended by the manufacturer or engineer for the site conditions.

7.0 Basis of Payment

The work performed, and materials furnished in accordance with this Item and measured as provided under “Measurement” will be paid for at the unit price bid for “Flexamat Standard”. This price is full compensation for loading and transporting, placing concrete block mats; excavation and disposal; furnishing topsoil and bedding; and equipment, labor, materials, tools, and incidentals.

Item JSP – 14 Flexamat – per Square Yard.

JSP-15 Page 1 of 1 7/28/2025

Impervious Trench Seal

Job Special Provision- 15 – Impervious Trench Seal

Impervious Trench Seal – JSP-15

This work shall consist of furnishing and installing the impervious trench seals as indicated on the plans or as directed by the Engineer.

2.0 Construction Requirements.

The Contractor shall furnish and install impervious trench seals as shown on the

Contract Drawings and in conformance with the materials indicated. Impervious trench seals shall be constructed according to Detail SAN-21 on sheet 24 of the drawings.

Measurement for impervious trench seals shall be made per each trench seal furnished and installed.

4.0 Basis of Payment

The accepted quantities of impervious trench seal will be paid for based on field measurements completed by the Inspector at the unit price bid…