5-BPAttach03 Ks SWPPP 210455.pdf

411 N. Webb Rd.

Wichita, KS 67206

316.684.9600

STORM WATER POLLUTION

PREVENTION PLAN

Street Improvements for 21st Street North from Mosley Avenue to I-135

Wichita, Kansas

PROJECT NUMBER: 2101010455

DATE: September 2022

Table of Contents

SECTION 1 - PERMIT

1.1 NOI Application

1.2 Contact with Agencies

1.3 Stormwater Pollution Prevention Plan

SECTION 2 - MAPS & PLANS

2.1 Aerial Photograph

2.2 USGS Quadrangle Map

2.3 Soil Survey

2.4 Erosion Control Plan

2.5 Erosion Control Details

SECTION 3 - CERTIFICATIONS & INSPECTION FORMS

3.1 Owner’s Certification and Delegation

3.2 Contractor’s Certification and Delegation

3.3 Sub-Contractor’s Certification Form

3.4 Inspection Form

3.5 Individual Lot Certification

SECTION 4 - PROJECT TRANSFER OR COMPLETION

4.1 Notice of Transfer of Ownership

4.2 Final Stabilization Checklist

4.3 Notice of Termination

SECTION 5 - PERMIT GUIDELINES

5.1 Kansas General Permit

J:\Projects\2021\2101010455_COW_21st Street from Mosley to I-135\05 Civil\Docs\Permits\KDHE\SWPPP\Ks SWPPP_210455.docx

SECTION 1 - PERMIT

J:\Projects\2021\2101010455_COW_21st Street from Mosley to I-135\05 Civil\Docs\Permits\KDHE\SWPPP\Ks SWPPP_210455.docx

1.1 NOI Application

KDHE Notice of Intent (NOI) Form Submitted to Kansas Department of Health and Environment (KDHE) and instructions on how to complete the NOI Form.

This form and instructions were prepared by KDHE.

Effective: August 1, 2022 Notice of Intent (NOI) for Discharge of Stormwater Runoff from Construction Activites Page 1 of 4

NOTICE OF INTENT (NOI)

For Authorization to Discharge Stormwater Runoff from Construction Activities In accordance with the Kansas Water Pollution Control General Permit Under the National Pollutant Discharge Elimination System (NPDES)

Submission of this Notice of Intent constitutes notice that the party identified in Section I of this form requests authorization for coverage under the Kansas Water Pollution Control general permit, or KDHE issued successor permits, issued for stormwater runoff from construction activities in the State of Kansas. Becoming a permittee obligates the discharger to comply with the terms and conditions of the general permit. A complete request for Authorization for coverage under the general permit must be submitted or the request will not be processed. KDHE will notify owners or operators whose Notice of Intent (NOI) and supporting documentation for Authorization of stormwater runoff associated with construction activities are incomplete, deficient, or denied.

I. OWNER OR OPERATOR ADDRESS, BILLING, CONTACT & RECORDS LOCATION INFORMATION

Owner/Operator Shawn Mellies Mailing Address: 455 N Main St,7th Floor Company Name: City of Wichita City, State Zip: Wichita, KS 67202 Phone: (316) 268-4501 Email: smellies@wichita.gov

Contact Name: Shawn Mellies Mailing Address: 455 N Main St, 7th Floor Company Name: City of Wichita City, State Zip: Wichita, KS 67202 Phone: (316) 268-4501 E-mail: smellies@wichita.gov

PERMIT FEE BILLING INFORMATION

Billing Contact: Shawn Mellies, City of Wichita Billing Address: 455 N Main St, 7th Floor Wichita, KS 67202

Phone: (316) 268-4501 E-mail: smellies@wichita.gov

Address where records will be kept (if not on-site):

Records Address: 455 N Main St Wichita, KS 67202

II. SITE INFORMATION

Project Name: Street Improvements for 21st Street North from Mosley Avenue to I-135 Street Address: 1300 E. 21st St N.

Wichita, KS 67214 County: Sedgwick

Legal Site Description:

Qtr: S2 Qtr: SW Section: 04 Township: 27S Range: 01E

Decimal Degrees Latitude: 37.722500 Decimal Degrees Longitude: -97.321667

AUTHORIZED:Submission Received: 10/26/2022 Submission Number:

HPN-QG6T-7TT3C YES X NO

Reviewer: Is Authorization Conditional

YES NO X

(if yes, see Section V for conditions)

Larry Hook Are there any Considerations

YES NO X

(if yes, see Section V for considerationsAuthorized By:

Secretary, Kansas Department of Health and Environment KS Permit No.: S-AR94-1800

Issued: November 30,2022 Federal Permit No.: KSR121041

KEIMS Watermark KSR121041 v1.0

Approved Issued On:11/30/2022

Expires On:07/31/2027

Project Name: Street Improvements for 21st Street North from Mosley Avenue to I-135 Notice of Intent (NOI)

Effective: August 1, 2022 Notice of Intent (NOI) for Discharge of Stormwater Runoff from Construction Activites Page 2 of 4

B. Existing Conditions/Uses

1) Is any part of the project located on Indian Country Land?

No

2) If stormwater runoff drains to or through a Municipal Separate Storm sewer System (MS4): MS4 Name:

City of Wichita

3) Name of the first receiving water, stream, or lake E Fork Chisholm Creek, River Basin AR -

LOWER ARKANSAS

4) Are contaminated soils present on the site or is there groundwater contamination located within the site boundary?

Yes

On separate paper describe in detail the locations and concentrations of the contaminants.

5) Are there any contaminated soils that will be disturbed or any contaminated groundwater that will be pumped by the proposed construction activity?

No

6) Are there any surface water intakes for public drinking water supplies located within ½ mile of the site discharge points?

No

7) Are there any known historical or archeological sites present within the site boundary or any historic structures located within 1000 feet of the project site?

No

Note: Include documentation of project-specific coordination with the Kansas Historical Society in making this determination

8) Is any threatened or endangered species habitat located within the site boundary or in the receiving water body?

No

Note: Include documentation of project-specific coordination with the Kansas Department of Wildlife, Parks & Tourism in making this determination.

9) Will the project impact the line or grade of a stream or does it include dredge or fill of a potential jurisdictional water body or wetlands?

No

10) Are any Critical Water Quality Management Areas, Special Aquatic Life Use Waters, or Outstanding National Resource Waters located within ½ mile of the facility boundary?

No

C. Project Description

1) Project Description:

Reconstruction of 21st Street to provide wider pavement and improved storm water drainage.

Does this NOI include all proposed soil disturbing activities associated with the entire common plan of development? Yes

2) Anticipated project Start Date: March 1, 2023 and Completion Date: March 31, 2024

3) Estimated total area to be disturbed: 3.10 Acres

4) Total area of the site: 3.10 Acres

5) Do you plan to disturb ten or more acres that are within a common drainage area? No

KEIMS Watermark KSR121041 v1.0

Approved

Project Name: Street Improvements for 21st Street North from Mosley Avenue to I-135 Notice of Intent (NOI)

Effective: August 1, 2022 Notice of Intent (NOI) for Discharge of Stormwater Runoff from Construction Activites Page 3 of 4

E. Maps

Include an area map showing the outline of the construction site and the topographic features of the area at least one mile beyond the project site.

F. Erosion Control Plan and Best Management Practices

1) Provide a summary of the sequence of major soil disturbing activities including installation of the corresponding stormwater management and pollution control features.

1. Construct temporary construction entrance/exit.

2. Install silt fence and other BMPs around perimeter.

3. Perform Grading.

4. Water disturbed areas frequently to minimize dust.

5. Disturbed areas of the site where construction activity has ceased for more than 14 days shall be stabilized

6. Install BMPs at the locations of all grate inlets, curb inlets, and at the ends of all exposed storm sewer pipes

7. Carry out final grading and gravel and/or asphalt placement

8. Remove BMPs only after all paving is complete and exposed surfaces are stabilized. Exposed surfaces are stabilized when 75% vegetative cover has been established

9. Remove temporary construction entrance/exits.

2) Provide one or more site plans covering the anticipated soil disturbing activities showing the limits of disturbance, the existing and proposed elevation contours, the types and locations of erosion/sediment control measures and stormwater management/pollution control features during each phase of construction and the locations where stormwater runoff leaves the construction site.

3) Provide a description of the best management practices to be utilized to control erosion and the discharge of sediment and other pollutants in stormwater runoff throughout construction and the design calculations for each sediment basin including total drainage area and storage capacity below the elevation of the mass volume flow outlet device.

n/a

4) Provide the name and License or Certification Number of the engineer, geologist, architect, landscape architect, or Certified Professional in Erosion and Sediment Control (CPESC) under which the construction stormwater pollution prevention plan has been developed.

Kara Anderson 18596 Engineer Name License or Certification Number Profession or Field

III. ANNUAL FEES

The first year of the annual permit fee specified in K.A.R 28-16-56 et seq. as amended is currently $60.00 and can be paid through the KEIMS system at time of submittal. The fee must be paid before this NOI will be processed. An invoice for the annual permit fee will be sent to the contact person requesting a permit until such time as the permittee submits a Notice of Termination (NOT).

Failure to pay the annual fee timely may result in termination of the construction stormwater discharge Authorization.

IV. OWNER OR OPERATOR CERTIFICATIONS

I, the undersigned, certify that a Stormwater Pollution Prevention Plan (SWP2 Plan) will be or has been developed for the construction site described in this NOI and supporting documentation. I further certify that the plan will be implemented at the time construction begins, and, as required by the NPDES general permit for Stormwater Runoff from Construction Activity, will revise the SWP2 plan if necessary.

KEIMS Watermark KSR121041 v1.0

Approved

Project Name: Street Improvements for 21st Street North from Mosley Avenue to I-135 Notice of Intent (NOI)

Effective: August 1, 2022 Notice of Intent (NOI) for Discharge of Stormwater Runoff from Construction Activites Page 4 of 4

I understand that continued coverage under the NPDES general permit for Stormwater Runoff from Construction Activities is contingent upon maintaining eligibility as provided for in the requirements and conditions of the general permit, and paying the annual fee.

I certify under penalty of law that this document and all attachments were prepared under my direction or supervision in accordance with a system designed to assure that qualified personnel properly gather and evaluate the information submitted.

Based on my inquiry of the person or persons who manage the system, or those persons directly responsible for gathering the information, the information submitted is, to the best of my knowledge and belief, true, accurate, and complete. I am aware that there are significant penalties for submitting false information, including the possibility of fine and imprisonment.

Shawn Mellies 10/26/2022 2:19:18 PM Signature (owner or operator) Date

Official Title

V. CONDITIONS AND/OR CONSIDERATIONS OF APPROVAL

Conditions of Authorization - For Official Use Only:

When indicated, Conditions of Authorization are as follows:

NONE

Notes on Consideration – For Official Use Only:

NONE

KEIMS Watermark KSR121041 v1.0

Approved

NOTICE OF INTENT (NOI)

For Authorization to Discharge Stormwater Runoff from Construction Activities In accordance with the Kansas Water Pollution Control General Permit Under the National Pollutant Discharge Elimination System (NPDES) ncfuntmew *■! Health uihl IhrtErvmwn!

Submission of this Notice of Intent constitutes notice that the party identified in Section I of this form requests authorization for coverage under the Kansas Water Pollution Control general permit, or KDHE issued successor permits, issued for stormwater runoff from construction activities in the State of Kansas. Becoming a permittee obligates the discharger to comply with the terms and conditions of the general permit. Completion of this NOI does not provide automatic coverage under the general permit. Coverage is provided and discharge permitted when the Kansas Department of Health and Environment (KDHE) authorizes the discharge of stormwater runoff from the construction activities identified on the NOI and supporting documentation. A signed and dated copy of the first page of the NOI indicating the Authorization will be provided to the owner or operator, or all three pages for Conditional Authorizations. Upon authorization of the construction activity discharge, a Kansas permit number and a Federal permit number will be assigned to the construction project. A complete request for Authorization for coverage under the general permit must be submitted or the request will not be processed (see listing on Page 3 of this NOI). KDHE will notify owners or operators whose Notice of Intent (NOI) and supporting documentation for Authorization of stormwater runoff associated with construction activities are incomplete, deficient, or denied.

Please Print or Type.

OWNER OR OPERATOR ADDRESS, BILLING, CONTACT & RECORDS LOCATION INFORMATION

Owner or Operator’s Name: Shawn Mellies, P.E.

Company Name: City of Wichita, Kansas____________

Owner or Operator’s Phone: (316) 268-4501

Mailing Address: 455 N Main, 7th Floor____________

City: Wichita

E-mail Address (optional): smellies@wichita.aov

Billing Contact Name: Shawn Mellies_______________

Billing Contact Phone: (316) 268-4501______________

I.

Contact Name: Shawn MelliesA. C.

Company Name: City of Wichita___________

Contact Phone: (316) 268-4632____________

Mailing Address: 455 N Main, 7th Floor

City: Wichita

E-mail Address (optional): smellies@wichita.aov Address where records will be kept (if not on-site):

Records Address: 455 N Main, 7th Floor____________

State: KS Zip: 67202 State: KS Zip: 67202

B. D.

Billing Contact Address (if different): 455 N Main. 7th Floor City: Wichita State: KS Zip: 67202

City: Wichita

E-mail Address (optional): smellies@wichita.qov_________________________

II. SITE INFORMATION, Type of Request: IZI New Permit Authorization □ Modification of Existing Permit Authorization

A. Project Name: Street Improvements for 21st St N from Moslev Ave to 1-135

State: KS Zip: 67202

B. LEGAL SITE DESCRIPTION:

_____ QTR of

Township: 27

Site Address: 21st St N from Moslev Ave to 1-135 City: Wichita___________

(Nearest City to Project)

_ QTR of_QTR Section: 04,09 South; Range: 1

Latitude: 37° 43’ 21” , Longitude: - 97° 19’ 18” Deg. Min. Sec.

State: KS Zip: 67214 0E DW

County: Sedgwick For Official Use Only: Deg. Min, Sec.

Received Amount Paid:

Date:

Reviewer

Initials: □ Y; ONAuthorized:

Check No.: Is Authorization Conditional? □ Y; □ N (if yes, see page 3 of NOI for conditions)Authorized by:

Secretary, Kansas Department of Health and Environment Date

KS Permit No.: Federal Permit No.:

Send completed 3 page NOI form with original signature and all appropriate submittals (see page 3 ofNOI) to:

Kansas Department of Health and Environment Bureau of Water, Industrial Programs Section 1000 SW Jackson, Suite 420 Topeka, KS 66612-1367

Note: A copy of the permit can be obtained at: www.kdheks.gov/stormwater or by submitting a written request to KDHE.

KDHE Contact Information:

Phone: (785)296-5545 E-mail: kdhc .stomiwatcrth-ks.gov

Effective August 1, 2017 Notice of Intent (NOI) for Discharge of Stormwater Runoff from Construction Activities Page 1 of3

Project Name: Street Improvements for 21st Street North from Mosley Avenue to 1-135 Notice of Intent (NOI)

C. Existing Conditions/Uses

Is any part of the project located on Indian Country land?

If yes: Contact EPA regarding discharging stormwater runoff from industrial activities on Indian Country land.

If stormwater runoff drains to or through a Municipal Separate Storm Sewer System (MS4): MS4 Name: Wichita Name of the first receiving water, stream, or lake: E Fork Chisholm Creek

Are contaminated soils present on the site or is there groundwater contamination located within the site boundary?

If yes: On separate paper please explain in detail the locations and concentrations of the contaminants.

Are there any contaminated soils that will be disturbed or any contaminated groundwater that will be pumped by the proposed construction activity?

If yes: On separate paper describe the special procedures and erosion and sediment control measures to be implemented to eliminate or minimize the potential to discharge the soil and/or groundwater contaminants.

Are there any surface water intakes for public drinking water supplies located within Vi mile of the site discharge points?

Are there any known historical or archeological sites present within the site boundary or any historic structures located within 1000 feet of the project site?

Note: Include documentation of project-specific coordination with the Kansas Historical Society in making this determination.

Is any threatened or endangered species habitat located within the site boundary or in the receiving water body?

Note: Include documentation of project-specific coordination with the Kansas Department of Wildlife, Parks & Tourism in making this determination.

Will the project impact the line or grade of a stream or does it include dredge or fill of a potential jurisdictional water body or wetlands?

If yes: Include documentation of project-specific coordination with the US Army Corps of Engineers and/or the Kansas

Department of Agriculture, Division of Water Resources in making this determination.

Are any Critical Water Quality Management Areas, Special Aquatic Life Use Waters, or Outstanding National Resource Waters located within Vz. mile of the facility boundary?

If yes: List the names of all such areas and waters:______________________________________________________________

□ Y;0N1)

2)

3) ., River Basin: Lower Arkansas

4) 0 Y; □ N

5) 0 Y; □ N

6) □ Y; 0N

□ Y; 0N7)

8)

□ Y; 0N

9) □ Y; 0N

10) □ Y; 0N

D. Project Description

Project Description: Reconstruction of 21st Street to provide wider pavement and improved storm water drainage.1)

0 Y; □ N2) Does this NOI include all proposed soil disturbing activities associated with the entire common plan of development?

If no: Explain what development areas of the site are not included in this NOI and provide contact information, if available, for the party or parties that own or have operational control of these areas:

n/a

Anticipated project Start Date: March 2023 March 20243) ., and Completion Date:

Estimated total area to be disturbed: 3.14) Total area of the site: 3.1.Acres .Acres

Do you plan to disturb ten or more acres that are within a common drainage area?

If yes: Will a sedimentation basin be installed in that drainage area? (Attach design calculations for each sedimentation basin.) □ Y; 0 N If a sediment basin is not feasible, on a separate sheet describe similarly effective erosion and sediment control measures to be implemented in lieu of a sedimentation basin.

5) □ Y; 0N

E. Maps

Include an area map showing the outline of the construction site and the topographic features of the area at least one mile beyond the project site.

F. Erosion Control Plan and Best Management Practices

1) Provide a summary of the sequence of major soil disturbing activities including installation of the corresponding stormwater management and pollution control features.

Provide one or more site plans covering the anticipated soil disturbing activities showing the limits of disturbance, the existing and proposed elevation contours, the types and locations of erosion/sediment control measures and stormwater management/pollution control features during each phase of construction and the locations where stormwater runoff leaves the construction site.

2)

Effective August 1, 2017 Notice of Intent (NOI) for Discharge of Stormwater Runoff from Construction Activities Page 2 of3

Project Name: Street Improvements for 21st Street North from Mosley Avenue to 1-135 Notice of Intent (NOI) Provide a description of the best management practices to be utilized to control erosion and the discharge of sediment and other pollutants in stormwater runoff throughout construction and the design calculations for each sediment basin including total drainage area and storage capacity below the elevation of the mass volume flow outlet device.

3)

Provide the name and License or Certification Number of the engineer, geologist, architect, landscape architect, or Certified Professional in Erosion and Sediment Control (CPESC) under which the construction stormwater pollution prevention plan has been developed.

4)

Kara Anderson, P.E., CFM Kansas 18596 Engineer Name License or Certification Number Profession or Field (Engineer, Architect, etc.)

HI. ANNUAL FEE

Enclose a check for the first year of the annual permit fee specified in K.A.R. 28-16-56 et seq. as amended. Make the check payable to "KDHE". Per K.A.R. 28-16-56, as amended, the current annual permit fee for this general permit is $60. An invoice for the annual permit fee will be sent to the contact person requesting a permit until such time as the permittee submits a Notice of Termination (NOT).

Failure to pay the annual fee will result in termination of the construction stormwater discharge Authorization.

IV. OWNER OR OPERATOR CERTIFICATIONS

I, the undersigned, certify that a Stormwater Pollution Prevention Plan (SWP2 Plan) will be or has been developed for the construction site described in this NOI and supporting documentation. I further certify that the plan will be implemented at the time construction begins, and, as required by the NPDES general permit for Stormwater Runoff from Construction Activity, will revise the SWP2 plan if necessary.

I understand that continued coverage under the NPDES general permit for Stormwater Runoff from Construction Activities is contingent upon maintaining eligibility as provided for in the requirements and conditions of the general permit, and paying the annual fee.

I certify under penalty of law that this document and all attachments were prepared under my direction or supervision in accordance with a system designed to assure that qualified personnel properly gather and evaluate the information submitted. Based on my inquiry of the person or persons who manage the system, or those persons directly responsible for gathering the information, the information submitted is, to the best of my knowledge and belief, true, accurate, and complete. I am aware that there are significant penalties for submitting false information, including the possibility of fine and imprisanment.

/e-ir-tctt Signature (owner or operator) Date

Shawn Mellies, P.E., Chief Design Engineer Name and Official Title (Please print or type. Form with original signature must be sent to KDHE.)

Conditions of Authorization - For Official Use Only:

When indicated, Conditions of Authorization are as follows:

A complete request for Authorization for coverage under the general permit must be submitted or the request will not be processed. A complete request for Authorization includes:

• An NOI form (construction stormwater) with an original authorized signature:

• The annual permit fee for the first year; ($60.)

• An area map showing the outline of the construction site and the general topographic features of the area at least one mile beyond the project site boundary;

• Sequence of major soil disturbing activities including installation of stormwater management and pollution control features;

• A detailed site plan/plans showing the limits of disturbance, existing and proposed contours, erosion and sediment control features, locations where stormwater runoff leaves the construction site;

• A narrative summary of the additional erosion and sediment control and other best management practices that will be utilized to prevent or reduce contamination of stormwater runoff from the construction activities;

• Total drainage area, storage capacity and design calculations for each sedimentation basin; and

• Copies of letters or e-mails documenting coordination with appropriate local, state or federal agencies.

Effective August 1,2017 Notice of Intent (NOI) for Discharge of Stormwater Runoff from Construction Activities Page 3 of 3

J:\Projects\2021\2101010455_COW_21st Street from Mosley to I-135\05 Civil\Docs\KDHE Soil Management Plan Letter\Proposed Soil Management Plan.docx Page 1

Overview The City of Wichita (City) has contracted with MKEC Engineering, Inc. (MKEC) to design the reconstruction of 21st Street North between Mosley and I-135 in Wichita, Kansas. The activities that will occur as part of the construction of this design will consist of the following:

Removal of existing 21st Street pavement.

Excavation and grading for new street pavement and sidewalks.

Excavation and removal of existing storm sewers.

Excavation for the installation of new storm sewers.

Excavation for the installation of water lines.

Excavation of bore pits for the installation of water lines using trenchless methods.

Excavation for the relocation of gas lines at locations where gas lines conflict with proposed improvements.

The planned activities are located in an area known to be impacted by petroleum hydrocarbon contamination principally associated with the former Coastal Derby Refinery. The information included is intended to provide notice to the Kansas Department of Health & Environment (KDHE) that planned activities may result in the disturbance of petroleum-contaminated soils and provide KDHE with a description of the City’s soil management plan to be implemented during construction of the planned activities. All construction and excavation activities are planned to occur at a depth of 10 feet or less below the existing ground surface. The City does not plan to encounter groundwater at these depths based on previous groundwater depth measurements. Exhibit 1 is an overview map showing the location of the proposed construction with respect to the former Coastal Derby Refinery property.

Background In 2016, the City of Wichita removed portions of an existing reinforced box culvert and constructed a new bridge on 21st Street across the Middle Fork Chisholm Creek. The bridge is located at the southwest corner of the old Coastal Derby Refinery property. Construction activities for the improvements required soil excavation in areas known to be contaminated with hydrocarbons. In preparation for the excavation, the City and MKEC contracted with GSI Engineering (GSI) to perform subsurface explorations in 2014 and 2015 to determine the nature and extent of soil and groundwater contamination in the vicinity of the planned construction activities. Summaries of the investigative results are noted as follows:

2014 Investigation The GSI investigation concluded that with respect to volatile organic compounds (VOCs), no soil results exceeded the KDHE RSK soil pathway values, but did show that naphthalene was detected at levels exceeding the soil to groundwater RSK level for residential and non-residential soils. The GSI investigation indicated that total petroleum hydrocarbons (TPH) in both the gasoline range organics (GRO) and diesel range organics (DRO) were present in the soils at levels exceeding the residential RKS levels for the soil pathway. The GSI investigation also stated that none of the soils tested for RCRA metals had residential RSK exceedances.

2015 Investigation In 2015, a second investigation of the soils at the 21st Street Bridge replacement site was conducted by GSI. The focus of the investigation was shallow soils above the water table in areas that were going to be excavated under the revised bridge replacement approach. Five new borings were made. Borings 21A and 21B were located on the north side of 21st Street while borings 21C, 21D and 21E were made on the south side of 21st Street. The investigation revealed several shallow soil samples with minor TPH-DRO and TPH- GRO results had PID readings exceeding 100 parts per million (ppm) levels. No soil samples had metals

J:\Projects\2021\2101010455_COW_21st Street from Mosley to I-135\05 Civil\Docs\KDHE Soil Management Plan Letter\Proposed Soil Management Plan.docx Page 2 results exceeding KDHE’s Tier 2 standards. The soil sample collected at location B-21D from the depth of 8 to 10 feet had naphthalene at 1,430 µg/kg which exceeds the KDHE Tier 2 industrial soil to groundwater standard of 659 µg/kg and elevated levels of TPH-GRO (829 mg/kg) and TPH characterized as diesel fuel (7,350 mg/kg). The soil sample at B-21E from a depth of 8 to 10 feet, also had elevated Naphthalene (1,380 µg/kg), and TPH-GRO (106 mg/kg). No samples appeared to have results that would be indicative of a classification as hazardous waste.

Exhibit 2 is a record of correspondence between the City and KDHE outlining proposed soil handling efforts related to the planned 21st Street bridge construction. The exhibit consists of two letters prepared by the City with responses for each prepared by the KDHE.

In April 2020, EnviroAnalytics Group prepared a Soil Waste Management Plan for the purpose of establishing procedures for disturbance of existing contaminated soils within the former Coastal Derby Refinery property. The Kansas Department of Health & Environment (KDHE) approved the plan in May 2020. The plan established zones of soil management protocols based on the level of various soil contaminants found on site. Exhibit 3 is a copy of Figure 4-6 from the EnviroAnalytics report. This figure indicates that all soil in the first five feet of depth adjacent to the 21st Street public right-of-way was found to be soil having no specific soil management protocols due to known KDHE Tier 2 RSK non-residential soil pathway criteria exceedances.

For the purpose of constructing the 21st Street planned improvements, MKEC hired GSI in May of 2022 to conduct environmental borings at twenty separate locations along 21st Street within public right-of-way between the west side of the 21st and Mosley intersection to the west side of the 21st and Interstate 135 interchange. Borings were taken immediately north and south of the existing 21st Street pavement within this corridor. Boring locations were evenly spaced throughout the corridor and three samples from discrete depth intervals in each boring were analyzed for a total of 60 samples submitted for analysis. All planned activities will occur within the depth ranges noted for each boring location. Exhibit 4 is a subsurface investigation report prepared by GSI outlining the soil investigation and its results.

Field headspace screening for poly aromatic hydrocarbons (PAH) indicated that eighteen soil samples had measurable levels. The measured levels varied from 0.1 ppm in SB-18 to 803 ppm in SB-7. Thirteen of the eighteen samples with measurable PAH’s had levels less than 2 ppm which may be related to ambient or background levels, four samples had levels between 6 and 27 ppm, and one sample had a level of 803 ppm.

Soil borings with field screening levels above 2 ppm included SB-7 (1 sample), SB-9 (2 samples), SB-12 (1 sample), and SB-17 (1 sample).

A total of 60 soil samples were submitted to the laboratory for low, medium, and high range hydrocarbon analysis (180 separate analyses). Nine of the 180 laboratory analysis had detectible amounts of hydrocarbons and only two samples had levels above the KDHE Tier 2 Screening Levels. The two samples that exceeded the KDHE Tier 2 levels were boring SB-7, in the 2.0’ to 4.0’ depth interval that exceeded the mid-range hydrocarbon limit and boring SB-9, in the 6.0’ to 8.0’ depth interval that exceeded the low range hydrocarbon limit.

Based on previous explorations in the area by GSI and EnviroAnalytics Group, volatile organic compounds (VOCs) and RCRA metals are not expected to be encountered and were not tested for.

Groundwater Management Plan The City does not plan to encounter or extract any groundwater while performing the planned construction activities. The water table is typically monitored to be between 12 to 14 feet below ground surface in this area. Planned construction activities will typically be between 0 to 6 feet below ground surface with proposed storm sewer construction extending to 8 feet below ground surface. If groundwater is unexpectantly encountered by the proposed construction efforts or if it is determined necessary to extend construction excavations below 8 feet below ground surface, the groundwater will be extracted, containerized, tested, and appropriately treated and disposed. If groundwater extraction becomes necessary, the City will notify KDHE and prepare a groundwater treatment plan and submit to KDHE under separate cover.

J:\Projects\2021\2101010455_COW_21st Street from Mosley to I-135\05 Civil\Docs\KDHE Soil Management Plan Letter\Proposed Soil Management Plan.docx Page 3

Soil Excavation Plan The proposed 21st Street reconstruction will be completed in two separate phases. Phase 1 construction will occur east of the Middle Fork Chisholm Creek bridge between the bridge and Interstate 135. Phase 2 construction will occur west of the Middle Fork Chisholm Creek bridge between Mosley Avenue and the bridge. Based on the soil contamination findings from the GSI report (Exhibit 4), we have designated an approximate 350 feet long corridor within the 21st Street public right-of-way in Phase 1 and an approximate 200 feet long corridor in Phase 2 as the area of concern regarding potentially contaminated soil that may be encountered during construction. Exhibit 5 is an illustration of the excavation plan areas of concern with associated excavation details. A summary of the anticipated excavation volumes for the various construction activities is provided below.

Excavation of soil below and adjacent to existing pavement to accommodate new concrete pavement and base rock is anticipated to be 1,266 cubic yards in Phase 1 and 384 cubic yards in Phase 2. The excavated material will be located within the top 2 to 3 feet below ground surface.

Excavations for new sidewalks are included in this soil volume.

Excavation of soil for the construction of new storm sewer is anticipated to be 212 cubic yards in Phase 1 and 192 cubic yards in Phase 2. This will include excavations necessary for the installation of storm sewer pipe, manholes and inlets. The excavated material will be located within the top 6 to 8 feet below ground surface.

Excavation of soil for the construction of new water lines is anticipated to be 86 cubic yards in Phase 1 and 23 cubic yards in Phase 2. The excavated material will be located within the top 6 feet below ground surface.

Soil Management Plan As noted above, the City and MKEC anticipate that approximately 2,163 cubic yards of material may be excavated during this project. All of the petroleum-impacted soil is anticipated to occur at a depth between 0 to 8 feet below normal ground surface, above the groundwater level and is anticipated to be found in a zone defined within 200 feet west and 350 foot east of the Middle Fork Chisholm Creek bridge on 21st Street, within public right-of-way. The following is the City’s Soil Management Plan during this construction effort.

Soils will be visually and olfactory monitored for obvious petroleum contamination.

Excavated soils with no evidence of separate phase petroleum hydrocarbons (Type 1 soils) will be handled as typical special waste soils. They will be staged wherever the construction manager deems appropriate. More than likely it will be placed on private property formerly designated as part of the Coastal Derby Refinery on the south side of 21st Street. At the staging area, the excavated soils will be placed on plastic sheeting or within a lined roll-off box.

Soils with evidence of separate phase petroleum contamination (petroleum saturated material – Type 2 soils) are not anticipated. However, if this type of material is observed it will be directly placed in a lined roll-off box and segregated from all other materials.

Any given area requiring backfill will be backfilled with petroleum free, geotechnically appropriate material provided by the City’s construction contractor from off-site locations.

Upon completion of excavation activities, any stockpiled Type 1 or Type 2 material will be covered with plastic sheeting to protect it from precipitation and storm water run-on/runoff.

Type 1 stockpiled material will be hauled offsite and properly disposed either by land farming or as special waste. Land farming arrangements will be made by the City’s consultant while working with KDHE staff.

Type 2 stockpiled material will be tested and characterized to determine how it should be classified and handled. Most likely, Type 2 material will end up being characterized either as Special Waste

J:\Projects\2021\2101010455_COW_21st Street from Mosley to I-135\05 Civil\Docs\KDHE Soil Management Plan Letter\Proposed Soil Management Plan.docx Page 4 or Hazardous Waste and will be transported and disposed of following the appropriate and applicable regulation.

Characterization results will be provided to KDHE.

For materials meeting the definition of a Special Waste, one of two activities will take place as described below.

o Option 1. If material is suitable for land farming, the City’s consultant will work with KDHE staff to identify an appropriate location and obtain approval for the land farming process following the applicable regulations and guidelines.

o Option 2. A document will be submitted to KDHE’s Bureau of Waste Management requesting authorization to dispose of the impacted material at a KDHE-permitted municipal solid waste landfill (MWSLF). Upon determination from KDHE that the material qualifies as Special Waste, the material will be transported and disposed at an approved MWSLF that will accept the material.

For materials meeting the definition of a Hazardous Waste, arrangements will be made to have the material property transported and disposed of at facility yet to be determined.

Summary The City intends to reconstruct 21st Street North between Mosley Avenue and Interstate 135 in Wichita, Kansas. The proposed reconstruction project is located within the North Industrial Corridor site adjacent to the former Coastal Derby Refinery. The reconstruction will involve excavation of approximately 2,163 cubic yards of soil located within an identified area of soil that is potentially contaminated with petroleum hydrocarbons. The City’s contractor performing the improvements will stockpile the excavated soil onsite and will segregate the material with visual free phase hydrocarbons from the rest of the material. These materials will be designated as Type 2 and further evaluated as Special or Hazardous waste then disposed of properly based on these classifications. Soil excavated not having visual free phase hydrocarbons will be designated as Type 1 soil and will be disposed of properly as Special Waste. All backfill soil material will consist of clean, geotechnically appropriate material obtained from offsite locations.

STORM ELEVATION

PROJECT NO.

SHEET NO.

REVISION DATENO.

DATE

SCALE

©2022

MKEC Engineering

All Rights Reserved www.mkec.com

These drawings and their contents, including, but not limited to, all concepts, designs, & ideas are the exclusive property of MKEC Engineering (MKEC), and may not be used or reproduced in any way without the express consent of MKEC.

J P

R O

J E

C T

S C

O W

S

T

S

T R

E E

T

F

R O

M

M

O S

L E

Y

T

O

I

C

A D

S

H T

S

C

I V

I L P

A V

P

H A

S E

S

P E

C I A

L

W

A S

T

X C

A V

A T

I O

N

D

W G

DESIGNED DRAWN CHECKED

R E

I M

P R

O V

E M

E N

F

O R

R

E E

T

M

O S

L E

Y

T

O

I

P H

A S

E

472-2021-085733

6/22/2022

SLF KP JRA

SPECIAL WASTE

EXCAVATION

DETAILS

QUANTITY EXCAVATION

ITEMS

PHASE 1

CONSTRUCTION

QUANTITY (C.Y.)

PHASE 2

CONSTRUCTION

QUANTITY (C.Y.)

NOTES

Excavation for New Street 1,266

Includes excavation for sidewalk, driveways and grading within street

Excavation for Storm Sewers

212 192 Includes excavation for inlets and manholes

Excavation for Water Lines

86 23

Includes 4'x30' Receiving Pit and Pipe Drilling to facilitate Directional Drill under channel

TYPICAL STREET SECTION

21ST STREET

NOTES:

NOTE:

STORM SEWER TRENCH SECTIONS

Non-Paved Areas

Under Pavement

WATER TRENCH SECTIONS

Non-Paved Areas

Under Pavement

N

LEGEND

S T

A

SCALE: 1"=30'

30 600

S T

A

S T

A

S T

A

SPECIAL WASTE EXCAVATION PLAN

AutoCAD SHX Text Proposed or Existing Structure Grade

AutoCAD SHX Text Bottom of Pavement and Base

AutoCAD SHX Text (Proposed Storm Sewer to be installed)

AutoCAD SHX Text Existing Structure

AutoCAD SHX Text Proposed Finished Surface or Existing Surface

AutoCAD SHX Text Crown Line El. 1307.40

AutoCAD SHX Text Pavement Removal (9")

AutoCAD SHX Text Proposed 6" Aggregate Base

AutoCAD SHX Text Proposed 9" Concrete Pavement

AutoCAD SHX Text Proposed Sidewalk 4" (Typ.)

AutoCAD SHX Text Uncertain Origin/Location

AutoCAD SHX Text 7+57.04L13.43

AutoCAD SHX Text 8+82.00R32.00

AutoCAD SHX Text 20" WL (GIS) Approx

AutoCAD SHX Text

WV #04085

AutoCAD SHX Text

BH

AutoCAD SHX Text C

AutoCAD SHX Text C

AutoCAD SHX Text E

AutoCAD SHX Text

LP

AutoCAD SHX Text

LP

AutoCAD SHX Text

LP

AutoCAD SHX Text

LP

AutoCAD SHX Text

LP

AutoCAD SHX Text

LP

AutoCAD SHX Text

MB

AutoCAD SHX Text

MW

AutoCAD SHX Text

MW

AutoCAD SHX Text

MW

AutoCAD SHX Text

MW

AutoCAD SHX Text

UP

AutoCAD SHX Text

UP

AutoCAD SHX Text

UP

AutoCAD SHX Text

UP

AutoCAD SHX Text

UP

AutoCAD SHX Text

SS

AutoCAD SHX Text

SS

AutoCAD SHX Text

SW

AutoCAD SHX Text

SW

AutoCAD SHX Text

SW

AutoCAD SHX Text

SW

AutoCAD SHX Text

SW

AutoCAD SHX Text

SW

AutoCAD SHX Text

SW

AutoCAD SHX Text

SW

AutoCAD SHX Text

SIGN

AutoCAD SHX Text

SIGN

AutoCAD SHX Text

SIGN

AutoCAD SHX Text W

AutoCAD SHX Text W

AutoCAD SHX Text

Uncertain Origin/Location

AutoCAD SHX Text 7+57.04L13.43

AutoCAD SHX Text 8+82.00R32.00

AutoCAD SHX Text 20" WL (GIS) Approx

AutoCAD SHX Text

WV #04085

AutoCAD SHX Text

BH

AutoCAD SHX Text C

AutoCAD SHX Text C

AutoCAD SHX Text E

AutoCAD SHX Text

LP

AutoCAD SHX Text

LP

AutoCAD SHX Text

LP

AutoCAD SHX Text

LP

AutoCAD SHX Text

LP

AutoCAD SHX Text

LP

AutoCAD SHX Text

MB

AutoCAD SHX Text

MW

AutoCAD SHX Text

MW

AutoCAD SHX Text

MW

AutoCAD SHX Text

MW

AutoCAD SHX Text

UP

AutoCAD SHX Text

UP

AutoCAD SHX Text

UP

AutoCAD SHX Text

UP

AutoCAD SHX Text

UP

AutoCAD SHX Text

SS

AutoCAD SHX Text

SS

AutoCAD SHX Text

SW

AutoCAD SHX Text

SW

AutoCAD SHX Text

SW

AutoCAD SHX Text

SW

AutoCAD SHX Text

SW

AutoCAD SHX Text

SW

AutoCAD SHX Text

SW

AutoCAD SHX Text

SW

AutoCAD SHX Text

SIGN

AutoCAD SHX Text

SIGN

AutoCAD SHX Text

SIGN

AutoCAD SHX Text W

AutoCAD SHX Text W

PLOTTED: Wednesday, October 05, 2022 @ 07:05AM

AutoCAD SHX Text

NTS

AutoCAD SHX Text

1. Quantities provided are for information only. Quantities provided are for information only. 2. Excavation quantities shown on this sheet include Excavation quantities shown on this sheet include all pervious material within the excavation limits as outlined. The volume of impervious materials such as existing pavement, concrete inlets and storm sewer pipes have been subtracted from the quantities shown. 3. For the purposes of calculating quantities, an For the purposes of calculating quantities, an existing pavement depth of 9" was assumed. 4. Excavation quantities for the construction of Excavation quantities for the construction of proposed storm sewer structures were calculated based on excavating around the outside limits of the structure a distance of 3' on all sides. 5. Excavation quantities calculated for any given Excavation quantities calculated for any given pipe trench is based on the Trench Details on this sheet. 6. Refer to Section 307 of the Special Provisions. Refer to Section 307 of the Special Provisions. 7. Phase 1 applies from Sta. 82+68.27 to Sta. Phase 1 applies from Sta. 82+68.27 to Sta. 86+00.00 Only. Phase 2 applies from Sta. 79+00 to Sta 81+04.58. All water line will be constructed in Phase 1.

AutoCAD SHX Text Elevation views are shown with a vertical exaggeration for clarity.

AutoCAD SHX Text Finished Grade in Unpaved Areas

AutoCAD SHX Text Proposed or Existing Pavement and Base

AutoCAD SHX Text FL of Pipe Per Profile

AutoCAD SHX Text Bottom of Excavation

AutoCAD SHX Text FL of Pipe

AutoCAD SHX Text Finished Grade in Unpaved Areas

AutoCAD SHX Text Proposed or Existing Pavement and Base

AutoCAD SHX Text Top of Water Pipe Per Profile

AutoCAD SHX Text Bottom of Excavation

AutoCAD SHX Text Bottom of Excavation

AutoCAD SHX Text Bottom of Excavation

AutoCAD SHX Text Top of Water Pipe Per Profile

AutoCAD SHX Text 8" Water Line Pipe

AutoCAD SHX Text 8" Water Line Pipe

AutoCAD SHX Text Excavation Areas for Street Construction Existing Pavement Removed Excavation Areas for Underground Utility Construction Construction Limits

AutoCAD SHX Text Const. Limits

AutoCAD SHX Text

EX. R/W

AutoCAD SHX Text

EX. R/W

AutoCAD SHX Text

EX. R/W

AutoCAD SHX Text

EX. R/W

AutoCAD SHX Text

SECTION LINE

AutoCAD SHX Text

PROP. IMPROVEMENT PROP. IMPROVEMENT

AutoCAD SHX Text Const. Limits

AutoCAD SHX Text Const. Limits

AutoCAD SHX Text Const. Limits

AutoCAD SHX Text Proposed Water Line Construction

AutoCAD SHX Text Phase 2 Construction

Phase 1 Construction

1.2 Contact with Agencies

Lesley Schmidt

From: Lesley Schmidt Sent: Friday, October 14, 2022 3:21 PM To: KDWPT Services, Environmental Subject: NOI T&E; PRJ: Street Improvements for 21st Street North from Mosley Avenue to I-135; CO:

SG; LOC: SECTION 04,09-TWN 27S-RANGE 1E

Attachments: 2-1 Aerial Exhibit.pdf; 2-2 USGS Quad Exhibit.pdf

Legal Description: Section 04 & 09, Township 27 South, Range 1 East Project Description: Reconstruction of 21st Street to provide wider pavement and improved storm water drainage.

Please review the attached quadrangle and aerial exhibits showing the referenced site. We are currently preparing a Stormwater Pollution Prevention Plan for this project and need to verify per KDHE requirements if there are any threatened or endangered species known to be present within the site boundary or in the receiving water body.

Please feel free to contact us with any questions you might have or if additional information would be helpful.

Thank you in advance for your attention to this matter.

MKEC ENGINEERING SUCCESS

T 316.684.9600 • F 316.684.5100 411 N. Webb Rd. • Wichita, KS 67206 lschmidt@mkec.com • www.mkec.com Facebook • Twitter • LinkedIn

This email transmission, and any documents, files or previous email messages attached to it may contain confidential information. If the reader of this message is not the intended recipient or the employee or agent responsible for delivering the message to the intended recipient, you are hereby notified that any dissemination, distribution or copying of this communication is strictly prohibited. If you are not, or believe you may not be, the intended recipient, please advise the sender immediately by return email or by calling 316.684.9600. Immediately take all steps necessary to permanently delete the email and all attachments from your computer system.

'()*+,-./-0-12

456+(.7+89+:

'()*+,-.;5<)

���3�� �=�>�

/-(++-.;?@()8+?+5-2.<)(.AB2-./-(++-.C)(-D.<()?.E)2F+G.H8+51+.-).;IBJK

L�����$ ���

7+,)52-(1,-9)5.)<.AB2-./-(++-.-).@()896+.:96+(.@08+?+5-.056.9?@()8+6.2-)(?.:0-+(.6(0950M+N

���3�� �O�$�

7)06.P.Q9MD:0G.R)52-(1,-9)5

���3�� �S

AAIBTIBUB

E+220M+2

O� �� L� �

AIB.H+(90F.VWD9X9-N@6<.YP')(-0FPZ+-[9F+PKJB\J] BTPB̂PATAA._̀AK̀KJ.'E

AIA.4/Z/.a106.VWD9X9-N@6<.YP')(-0FPZ+-[9F+PKJB\̂] BTPB̂PATAA._̀Ab̀T̂.'E

'()*+,-.c),1?+5-2 H66.c),1?+5-

YP')(-0FP'()*+,-c),1?+5-2PKJB\A] d e�$���&

From: Cordes, Zackary [KDWP] <Zackary.Cordes@KS.GOV> Sent: Thursday, October 27, 2022 5:02 PM To: Lesley Schmidt Subject: KDWP Review 20221124: 21st Street North Improvements Project (Sedgwick)

CAUTION: This email originated from outside of MKEC Engineering, Inc. Do not click links or open attachments unless you recognize the sender and know the content is safe.

Lesley Schmidt, We have reviewed the information for the proposed 21st Street North reconstruction project in Wichita, Sedgwick County, Kansas (Sec. 4&9-T27S-R01E). The project was reviewed for potential impacts to critical wildlife habitats, current state-listed threatened or endangered species and species in need of conservation, as well as Kansas Department of Wildlife and Parks managed areas for which this agency has administrative authority.

We have no objections to the project and provide the following comments and general recommendations. When applicable:

• Avoid impacts to existing streams and rivers, adjacent riparian zones, wetlands, and native prairie and woodland areas.

• Minimize all bank or instream activity, particularly during general fish spawning season (March 1 –

Aug. 31).

• Incorporate principles of low impact development (LID), such as permeable asphalt pavement, porous concrete, swales, bioretention, or raingardens. More info on

LID: https://www.epa.gov/nps/urban-runoff-low-impact-development.

• Implement and maintain standard erosion control Best Management Practices during all aspects of construction by installing sediment barriers (wattles, filter logs, rock check ditches, mulching, or any combination of these) across the entire construction area to prevent sediment and spoil from entering aquatic systems. Barriers should be maintained at high functioning capacity until construction is completed and vegetation is established. For more information on erosion BMPs go to: http://www.kdheks.gov/stormwater/#construct.

• Reseed disturbed areas with native warm-season grasses, forbs, and trees.

Results of our review indicate there will be no significant impacts to critical wildlife habitats; therefore, no special mitigation measures are recommended. The project will not impact any public recreational areas, nor could we document any potential impacts to currently-listed threatened or endangered species or species in need of conservation. No Department of Wildlife and Parks permits or special authorizations will be needed if construction is started within one year, and no design changes are made in the project plans. Permits may still be required from other agencies. We recommend consultation with all other applicable regulatory authorities which, among others, may include Kansas Department of Health and Environment, Kansas Department of

Agriculture-Division of Water Resources, and the U.S.