9-KANSAS TURNPIKE AUTHORITY TECHNICAL SPECIFICATIONS.pdf

August 26, 2026

Cody Vandevord Kansas Turnpike Authority 9401 E. Kellogg Wichita, KS 67207-1804

Re: KTA - Towanda Service Area Lagoon Improvement Project

Kansas Permit No.: C-WA09-OO02

Dear Cody Vandevord:

The Kansas Department of Health and Environment (KDHE) has received and reviewed the Special Provisions and Solids Management Plan for the Kansas Turnpike Authority (KTA) Towanda Service Area Lagoon Improvement Project, prepared by JEO Consulting Group, Inc. dated August 11, 2026.

The Towanda Service Area Lagoon Improvement Project is approved to proceed in accordance with the submitted documentation. All sludge removal, transport, and land application activities shall be conducted in strict compliance with the Kansas Water Pollution Control Permit for the facility. Furthermore, the contractor shall maintain continuous wastewater treatment throughout all construction activities.

Should you have any questions, please contact me by email at Jaime.Wilson@ks.gov or by phone at

(785) 296-5504.

Sincerely yours, Jaime Wilson, P.E., Chief Municipal Programs Unit Bureau of Water

JW

cc: JEO Consulting Group Inc - Kyle Otto, P.E.

SC District Office

SSM

2.0 mailto:Jaime.Wilson@ks.gov

01 10 00-1 Kansas Turnpike Authority Lagoon Improvements SPECIAL PROVISIONS JEO Project # - 260715.00 Revised 08/11/2026

KANSAS TURNPIKE AUTHORITY

SPECIAL PROVISION

TO THE

STANDARD SPECIFICATIONS

TECHNICAL SPECIFICATIONS

PART 1 - GENERAL

This Special Provision contains the terms and conditions which govern the Contractor’s general, product, and execution requirements necessary to complete the work within the established contract times. All Sections and subsections of this Project Special Provision are contractual and legally binding.

1.01 PROJECT CONTACTS

A. Authority’s Primary Contact:

1. Name: Cody Vandevord, P.E. | Engineering Program Manager

2. Address: 9401 E. Kellogg Wichita, KS 67207-1804

3. Office Number: 316.652.2683

4. Cell Number: 785.409.4737

5. Email: cvandevord@ksturnpike.com

B. Consulting Engineer’s Primary Contact:

1. Name: Kyle Otto, P.E.

2. Phone Number: 402.419.3466

3. Email: kotto@jeo.com

C. Consulting Engineer’s Secondary Contact:

1. Name: Andrew Fischer, E.I.

2. Phone Number: 785.249.3551

3. Email: afischer@jeo.com

1.02 PROJECT DESCRIPTION

A. The Kansas Turnpike Authority (Authority) has an existing wastewater treatment facility (WWTF), which consists of a three-cell controlled discharge lagoon system that provides domestic sewage treatment for the I-35 Towanda Service Area facility. The work to be completed on this project generally includes the removal of the accumulated sludge within the existing lagoon cell #1 and land application of the liquid sewage sludge.

B. A solids management plan was developed by JEO Consulting Group in July 2026 for the existing WWTF.

1. The general contents of the solids management plan are outlined as follows:

a. Lagoon Overview

(1) Statement of Purpose

(2) Design Summary

b. Depth Measurements

(1) Measurement Method

(2) Calculation of Sludge Volume

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KYLE M. OTTO

PROFESSIONA L ENGINEE

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LICENSED

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c. Sludge Sample Test Results

(1) Sampling Method

(2) Pollutant Concentrations

(3) Nutrient Concentrations

(4) Vector Attraction and Pathogen Reduction

d. Sludge Removal Process

(1) Desludging Options and Methods

e. Potential Land Application Sites

(1) Sites, Land Use, and Area

(2) Required Area of Application

(3) NRCS Soil Data Summary

f. Analysis of Potential Water Contamination

2. The complete July 2026 Solids Management Plan for the WWTF is included in the appendix.

3. The Contractor is responsible to be intimately familiar with the contents of the solids management plan, as it pertains to requirements of the Contractor.

C. The Contractor shall furnish all necessary tools, labor, material, and equipment necessary to remove and dispose of the accumulated sludge from the existing lagoon cell #1.

D. The general location of the Authority’s WWTF is at the following address, located in the west-central part of Butler County, KS:

1. I-35 (KTA MM 65), Towanda, KS 67144

2. A site location map is included in the solids management plan.

E. The approximate sludge volumes calculated in the solids management plan are as follows:

1. Approximate liquid sludge volume (ft3): 96,800 (724,100 gallons)

2. Approximate dry weight of sludge (tons): 586

3. The above values represent the Consulting Engineer’s estimate of total sludge volume for lagoon cell #1 based on the data and methods described in the solids management plan, including the sludge volume that shall remain at the lagoon floor. These values are estimates only and the Contractor shall be responsible for their own verifications and investigations necessary to satisfy themselves of the approximate total lagoon sludge volume.

1.03 PROJECT SCHEDULE

A. To complete the project within the time period defined by the “Work Scheduling” portion of the specifications, it is the intention of the Authority that a high degree of flexibility be afforded the Contractor regarding the construction schedule. The Contractor shall submit a proposed construction schedule following award of the contract. The KTA will perform a timely review of the schedule and discuss any changes that may be requested to avoid conflicts with other work to be performed in the immediate area of this project.

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1.04 CONTRACT DESCRIPTION

A. Contract type: One Contract for construction of the base bid.

1.05 PERMITS

A. The Kansas Department of Health and Environment (KDHE) regulations for domestic sludge re-use and disposal are defined by the United States Environmental Protection Agency (USEPA) 40 CFR 503 forms. A copy of the partially filled USEPA 40 CFR 503 forms is provided in the appendix of the solids management plan, and the Contractor shall be responsible for the completion and submittal of all applicable forms to KDHE in strict compliance to the instructions and provisions of 40 CFR 503, including all testing and sampling requirements. All 40 CFR 503 forms shall be submitted to the Authority and Consulting Engineer for review prior to KDHE submittals.

1.06 CODE COMPLIANCE

A. Sludge shall be removed and disposed of by Contractor according to the Environmental Protection Agency’s (EPA’s) 40 CFR 503 sludge regulations and the State of Kansas Department of Health and Environment Minimum Standards of Design for Water Pollution Control Facilities.

B. All proposed work shall be done in strict compliance with all applicable State, Federal and Local laws and rules and regulations.

1.07 UNIT PRICES

A. The Unit Price items for the base bid are described as follows:

1. Mobilization: lump sum (LS): Includes the mobilization and demobilization of Contractor's forces and equipment necessary for performing the work required under the contract.

2. Removal of Accumulated Sludge: lump sum (LS): Includes all materials, equipment, and labor necessary to remove the accumulated sludge from existing lagoon cell #1, including but not limited to lagoon desludging, lagoon pre-filling, completion of all applicable regulatory forms, and site restoration.

The sludge volume measurements and estimations listed in the solids management plan shall be considered an established quantity and final. No further measurement of sludge quantities shall be performed. Any quantity of sludge that is removed and land applied in order to complete the work in accordance with these specifications beyond the estimated quantity in the solids management plan shall be considered incidental.

3. Land Application of Sludge: lump sum (LS): Includes all materials, equipment, and labor necessary to haul and land apply the accumulated sludge removed from existing lagoon cell #1, including but not limited to coordination with landowners for potential land application sites, taking soil samples for use in completing the agronomic rate calculation form for each site, hauling of sludge, land application of sludge, completion of all applicable regulatory forms, and site restoration. The sludge volume measurements and estimations listed in the solids management plan shall be considered an established quantity and final.

No further measurement of sludge quantities shall be performed. Any quantity of sludge that is removed and land applied in order to complete the work in accordance with these specifications beyond the estimated quantity in the solids management plan shall be considered incidental.

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1.08 INCIDENTAL AND SUBSIDIARY ITEMS OF WORK

A. Any items or materials called for in these Specifications that are not measured and paid for directly shall be considered incidental and subsidiary to other items of work for which direct payment is made.

1.09 PROJECT CONDITIONS

A. Existing Utilities:

1. Contractor shall notify the “one-call notification center” and/or the respective utility company(s) before commencing work.

2. Once the location of the utility(s) has been staked, located or marked, it shall be Contractor’s responsibility to protect these stakes/markings. Any costs for restaking or remarking shall be Contractor’s expense.

3. Contractor shall avoid damaging any utility(s). Any such damage caused by Contractor, Contractor’s employees, subcontractors, suppliers or agents will be the responsibility of Contractor to repair at Contractor's expense. No additional compensation will be allowed for protecting utility(s) or for repair of any damage caused by Contractor, Contractor’s employees, subcontractors, suppliers or agents.

4. Contractor shall coordinate utility relocation or reconstruction with the appropriate utility company.

B. Maintain Continuous Wastewater Treatment:

1. Contractor shall schedule and conduct all work in a sequence, which will provide continuous treatment of the wastewater. Contractor shall provide any temporary pumping of sewer flows necessary to provide continuous wastewater treatment. Discharging of untreated wastewater during the construction will not be allowed. Contractor’s schedule of planned operations shall outline compliance with this requirement.

1.10 LIMITS OF CONSTRUCTION

A. Contractor shall confine all operations to areas within the WWTF fence line, land application sites, and travel between the WWTF and land application sites.

B. Areas outside of the WWTF fence line and land application sites are not to be disturbed unless necessary for travel between the WWTF and land application sites.

C. Contractor shall limit disruption of I-35 service area traffic. Contractor shall be responsible for all traffic signage as required by the Authority and KDOT regulations.

Materials and equipment shall not be stored in the traveled way.

D. Contractor shall exercise all reasonable care in any activities that are conducted in the areas of right of way and/or owned by the Authority, to minimize damages to the property. Contractor’s attention is specifically called to any buildings, trees, fences, drainage structures and other miscellaneous appurtenances to the property.

E. Contractor shall be solely and completely responsible for any damages caused by Contractor, Contractor’s employees, sub-Contractors, suppliers or agents.

F. Contractor shall be solely responsible for obtaining and shall pay all costs in connection with any additional work area, storage site, access to the site, or temporary right-of-way, which may be required for proper completion of the work.

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G. Staging Area: Minimal Contractor staging area is available within the existing WWTF fence line. Additional staging area may be available just to the southwest and/or northeast of the WWTF facility upon coordination with the Authority and Consulting Engineer prior to commencement of work.

1.11 SITE ADMINISTRATION

A. Contractor shall be responsible for all areas of the site used by him and by all Sub- Contractors in the performance of the work. Contractor will exert full control over the actions of all employees and other persons with respect to the use and preservation of the property and existing facilities, except such controls as may be specifically reserved to Authority or others. Contractor has the right to exclude from the site all persons who have no purpose related to the work or its inspection, and may require all persons on the site (except the Authority’s employees) to observe the same regulations as Contractor requires of its employees.

B. Contractor may use the area within the WWTF fence line owned by the Authority for storage and staging but must not interfere with normal operations of the Authority, without prior written approval from the Authority.

1.12 POWER

A. All power for lighting, construction use, operation of Contractor’s plant or equipment, or for any other use by Contractor, shall be provided by Contractor at his sole cost and expense and shall be considered incidental and subsidiary to other items of work for which direct payment is made. No separate payments will be made for this work.

1.13 TEMPORARY FACILITIES

A. Temporary facilities shall be considered incidental and subsidiary to other items of work for which direct payment is made. No separate payments will be made for this work.

1.14 DEWATERING OF LAGOON CELLS

A. Work to be performed may require pumping and dewatering of lagoons cells to complete the work as specified. It is the intent of the specifications that such pumping and dewatering operation shall be the obligation of Contractor.

B. Pumping and dewatering shall be considered incidental and subsidiary to other items of work for which direct payment is made. No separate payments will be made for this work.

C. Contractor will be responsible for design, construction, electrical service and materials, operation, maintenance and permitting of any dewatering system necessary for the successful construction and completion of the project.

PART 2 - PRODUCTS

2.01 SEEDING

A. Contractor shall reseed any areas of the WWTF site or land application site damaged by construction activities. Any seeding and site restoration shall be considered incidental and subsidiary to other items of work for which direct payment is made.

B. All seeding shall be done in accordance with the provisions of Section 904 of the Standard Specifications of the Kansas Department of Transportation, latest edition.

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2.02 AGGREGATE RESURFACING

A. Contractor shall resurface any aggregate surfacing at the WWTF site or land application site damaged by construction activities. Any aggregate resurfacing and site restoration shall be considered incidental and subsidiary to other items of work for which direct payment is made.

B. Aggregate shall meet the material characteristics and gradation limits of Type SS-3 in Section 1112 of the Standard Specifications of the Kansas Department of Transportation, latest edition.

2.03 LAGOON RIPRAP

A. Contractor shall reset any riprap displaced by construction activities to restore their original placement. Contractor shall replace any damaged riprap at the WWTF site damaged by construction activities. Any riprap and site restoration shall be considered incidental and subsidiary to other items of work for which direct payment is made.

B. Riprap shall meet the material characteristics and gradation limits of 6” D50 in Section 1114 of the Standard Specifications of the Kansas Department of Transportation, latest edition.

PART 3 - EXECUTION

3.01 ACCESS REQUIREMENTS

A. Contractor to arrange site and premises to allow access and WWTF operation by the Authority.

B. Contractor to notify the Authority 48 hours in advance prior to commencement of the work.

C. Contractor shall at all times maintain public access to the full services of the I-35 Towanda Service Area. Contractor shall keep all paved areas within the Service Area clear and available to the Authority and public at all times. Contractor shall not use these areas for parking or storage of materials without prior written approval from the Authority. Deliveries and hauling schedules shall be conducted in such a manner to minimize disruptions that obstruct access to property and other contract work which may occur adjacent to and concurrently with this project.

D. Contractor shall take all precautions not to damage buildings, utilities, sidewalks, drives, fences, trees, and property that are to remain in place during and after construction activities. Contractor shall be responsible for any damage and repair at Contractor’s expense.

E. Contractor shall maintain security of the site during construction by utilizing proper operation of the existing facility access gate. The entire site shall be secured at all times to deter entry to the site and prevent injuries to non-construction personnel.

F. The KTA I-35 access roads just east of SW Ohio Street Rd may be used during desludging operations, upon prior approval and coordination with the Authority. This access point is approximately ½-mile from the project location. Any required temporary traffic signage shall be installed and maintained at the Contractor’s expense.

3.02 SLUDGE REMOVAL

A. Sludge removal to be accomplished by a floating dredge (or other approved method) to within three inches (3”) of the lagoon floor. Contractor shall take care to protect

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JEO Project # - 260715.00 Revised 08/11/2026 earthen liner during construction, including but not limited to limiting movement on the lagoon floor. Mechanical equipment that is to be driven on the lagoon floor shall have wide, load dispersion wheels with non-aggressive tread. Sludge pushing mechanisms shall be smooth edged as to not scrape against or cut into the lagoon liner. No digging into the liner for sump pits or any other reason will be allowed. Any damage to the liner caused by desludging operations shall be corrected by Contractor (at the Contractor’s expense) prior to final payment.

B. The Contractor shall coordinate decanting of the clear liquid from the cell(s) with the Authority in accordance with their NPDES permit governing the WWTF, as necessary.

Therefore, if a discharge outside the normal NPDES permit conditions is required to accomplish the work within the specified timeframes, Contractor shall notify the Authority; and the Authority will notify the KDHE in advance of any drawdown discharges. A copy of the NPDES permit is included in the appendix.

C. The existing depth of the sludge was surveyed by KRWA on April 28, 2026. A copy of the sludge survey results is included in the appendix of the Solids Management Plan. The average sludge depth in lagoon cell #1 was estimated to be 27 inches (2.25 feet).

Characterization of the sludge in cell #1 was also completed in May 2026 by obtaining sludge samples and testing of the samples. A copy of the sludge testing results is included in the appendix of the Solids Management Plan.

D. The sludge removed from the lagoon cell is to be land applied (and incorporated into the soil) by the Contractor at a site(s) provided by Contractor. The site(s) for sludge application shall be provided by Contractor and shall comply with the EPA’s 40 CFR 503 regulations for site usage, setback distances, etc. Six (6) potential sites for land application have been identified, and detailed information about each site is included in the solids management plan in the appendix. Contractor is responsible for coordination and site selection for application sites, and responsible for identification of any additional sites. Contractor will provide the Authority documentation of written permission for each site prior to any land application.

E. Contractor shall limit access to the entrance of any lagoon cell bottom by any drivable or heavy equipment to a single sideslope to limit the risk of damaging the lagoon liner.

F. Contractor shall be responsible for obtaining soil samples at the land application site(s) prior to application of the sludge for use in determining the available nitrogen within the soil and calculating the agronomic rate. Contractor shall provide a report to the Authority and Consulting Engineer detailing the Total Nitrogen to be applied to each site to be used by the landowner(s). Contractor shall be responsible for not exceeding agronomic application rates for each site(s) pursuant to the 40 CFR 503 regulations.

G. Contractor shall obtain representative samples of the sludge to determine characterization of the sludge for use in calculating application rates conforming to agronomic rates at least once during dredging operations. Sampling and analysis of samples shall be at the Contractor’s expense.

H. The liquid sludge can be hauled by truck or pumped directly to the application site(s), at the Contractor’s discretion. Contractor shall provide a detailed description of haul route(s) or supply route(s) (if piping is utilized) to the application site(s) to Authority and Consulting Engineer for approval prior to commencing dredging operations. Contractor shall be responsible for obtaining all necessary permissions and/or permits for the route(s) identified. Contractor shall protect environment and public from damage due

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JEO Project # - 260715.00 Revised 08/11/2026 to sludge transport. Payment for the transportation and the application of the liquid sludge material shall be considered incidental and subsidiary to the payment for the removal of the sludge. No separate payment will be made for this work.

I. Application of the sludge shall comply with the USEPA’s 40 CFR 503 sludge regulations.

Contractor shall be responsible for maintaining all logs and records of sludge application to comply with the 40 CFR 503 regulations.

J. If a lagoon liner is considered damaged as a result of desludging operations, the owner and engineer reserve the right to complete permeability tests at the Contractor’s expense to determine the extent of the liner which is inadequate due to damage following the desludging operations. Contractor shall complete reconstruction of the inadequate liner areas at no additional cost to the Owner. Following liner reconstruction, additional permeability testing shall be completed to confirm restored adequacy of the reconstructed liner. All cost for retesting shall be borne solely by Contractor. All lagoon permeability test result documentation must be reviewed by Owner and Consulting Engineer prior to placement of the lagoon cells back into service.

K. Contractor shall be responsible for repairing any damage caused to the existing lagoon liner during sludge removal efforts. Any repairs to the lagoon liner shall be considered incidental and subsidiary to other items of work.

L. Any repairs to the earthen lagoon liner shall be made with clay and/or bentonite soils upon notification and approval of repair method by the Engineer.

3.03 LAGOON PRE-FILLING

A. After completion of all desludging work for a given lagoon cell, and liner reconstruction work if applicable, it shall be the responsibility of Contractor to pre-fill each cell to the minimum depth of 2 feet prior to placing the lagoon into service.

B. Verify that all applicable quality control tests are complete and meet the requirements of the Specifications prior to pre-filling.

C. Pre-filling operation shall be accomplished by pumping water directly into the desludged lagoon cell from another lagoon cell while exercising care to not allow solids from another cell into the desludged cell. Only in the case of insufficient water quantity available in the lagoon cell(s), the prefilling operation may be accomplished by using a Contractor furnished water source, or a flush hydrant near the distribution structure upon approval of use from the Owner. Pre-filling operations must be completed within 72 hours of the completion of construction work for each respective lagoon cell.

D. Addition of water from the Authority’s water system shall not be allowed without their written permission, other than normal wastewater flows from the sewer system users.

E. If the Contractor is granted permission to use the Authority’s water system, the Contractor shall furnish all hose, piping, fittings, adapters, backflow preventer, and meter together with all labor and equipment necessary to complete the 2-foot pre-filling operations. The Authority will pay for all water costs associated with the pre-filling operations.

F. If the Contractor opts to pre-fill using a water source other than the adjacent lagoon cells or from the Authority’s water system, the Contractor shall secure water, if necessary, and furnish all hose, piping, pumps, fittings and adapters together with all labor and equipment necessary to accomplish the 2-foot pre-filling operation and pay all costs.

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3.04 UNFAVORABLE CONSTRUCTION CONDITIONS

A. During unfavorable weather, wet ground or other unsuitable construction conditions, Contractor shall confine operations to work, which will not be affected adversely by such conditions. No portion of the work shall be constructed under conditions, which would adversely affect the quality or efficiency thereof, unless special means or precautions are taken by Contractor to perform the work in a proper and satisfactory manner.

3.05 WATER

A. Contractor shall make arrangements to obtain water from Authority, as necessary for construction of the work.

B. Contractor shall furnish all necessary hose, hose adapters, backflow protection devices, meters and fittings, and shall provide transportation and distribution of the water.

C. Contractor shall exercise care in drawing water from the water system and shall not draw water at a rate (when combined with municipal uses) that will reduce the water system storage level below 75% of the maximum.

D. If water is required to provide the proper moisture content for compaction, the transportation and distribution of water shall be considered incidental and subsidiary to other items of work for which direct payment is made.

E. All work associated with this, with the exception of the water itself, which will be paid for by the Authority, shall not be measured and paid for directly but shall be considered incidental and subsidiary to other items of work for which direct payment is made. No separate payments will be made for this work.

3.06 OPERATION OF WATER AND WASTEWATER SYSTEM VALVES AND EQUIPMENT

A. No valve or other control on the existing water or wastewater system shall be operated for any purpose by Contractor without prior permission of the Authority.

3.07 CLEANUP

A. Contractor shall return all areas disturbed by construction of the project to the original grade and shall restore the site to as clean and sightly condition as before the work began.

B. Contractor shall keep the cleanup of the project current with the construction.

C. During construction, areas to be maintained for traffic shall be kept clear of all hazardous materials, including but not limited to construction debris, dust, and mud.

D. The cleaning and sweeping of the streets and paved areas in the construction area shall be completed upon completion of the project. The project cleanup shall be conducted to the satisfaction of the Authority and Consulting Engineer and shall be completed prior to final acceptance of the project.

E. Contractor shall clean streets and paved areas in project area whenever mud, dirt or debris is tracked onto to the streets and/or paved areas as a result of the activities of Contractor, by his/her employees, sub-Contractors, suppliers or agents.

F. Contractor shall reseed any areas of the WWTF site or land application site damaged by construction activities.

G. Contractor shall resurface any aggregate surfacing at the WWTF site or land application site damaged by construction activities.

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H. Contractor shall reset and restore any displaced or damaged riprap at the WWTF site, respectively.

END OF SECTION