Attachment 3 - Documents Attached for Reference.pdf

GREATER HARTFORD FLOOD COMMISSION

50 Jennings Road, 2nd Floor

Hartford, Connecticut 06103 Telephone: (860) 757-9975 Fax: (860) 722-6251

May 10, 2022

Christopher Shepard, P.E.

Materials Innovation and Recycling Authority 100 Constitution Plaza Hartford, CT 06103

RE: Hartford Flood Protection System- Emergency Action Planning Materials Innovation and Recycling Authority Site (MIRA)– Hartford, CT

Dear Mr. Shepard:

The City is requesting the assistance of MIRA and other entities which impact the flood protection system in complying with Federal requirements as it relates to their facilities. In addition, the City of Hartford intends to develop an updated Flood Control Levee System Emergency Action Plan (EAP) that complies with the latest guidance from the United States Army Corps of Engineers (USACE) and the State of Connecticut DEEP Dam Safety Division.

1. Federal and State Regulatory Framework- Emergency Action Plan

The City of Hartford has a regulatory obligation to the United States Army Corps of Engineers (USACE) including compliance with the Code of Federal Regulations for Local flood protection works; maintenance and operations of structures and facilities (33 CFR 208.10) ; State of Connecticut Department of Energy and Environmental Protection (DEEP) with respect to State of Connecticut Dam Safety statutes; and Federal Emergency Management Agency (FEMA) with respect to federal regulation 44 CFR 65.10. Owners of levee penetrations are similarly obligated to inspect and maintain penetrations to ensure ongoing integrity.

A critical element of this regulatory framework in the system’s operability is implementation of an Emergency Action Plan (EAP) for the flood protection system. The EAP is an important plan that identifies key actions that need to be taken to prepare, maintain and react to flood situations.

A well-developed EAP requires a commitment from entities such as MIRA regarding responsibilities for operation, maintenance, and emergency preparedness planning for the portions of infrastructure that directly impact the flood control system. These responsibilities include operation and maintenance requirements, inspections, reporting, and emergency preparedness planning and activities.

2. Penetrations Under Floodwall and Levee

One of the most important concerns for the MIRA facility is the presence of numerous pipe and conduit penetrations under the floodwall. These penetrations provide a connection from various plant components directly to the Connecticut River. Levee penetrations, both active and

Hartford Flood Protection System- Emergency Action Planning Materials Innovation and Recycling Authority (MIRA)– Hartford, CT May 10, 2022 abandoned, pose significant risk for levee failure. The City is concerned about the condition and status of the numerous penetrations within the MIRA facility.

Failure of a penetration could lead directly to floodwater entering the protected area or could destabilize the floodwall leading to a breach of the flood protection system. All known penetrations, as well other penetrations that may not be documented, need to be identified, evaluated, and monitored through periodic inspections by the penetration owner. USACE regulations require recurring inspections ranging from quarterly visual inspections to CCTV inspections at 5-year intervals. Additional guidance on the federal requirement is summarized in Appendix A.

The owners of levee penetrations and encroachments are responsible to develop and maintain the appropriate operation and maintenance manuals, communication and reporting protocols, inspection programs, and action plans for their facilities within the levee easement and which are appurtenant to levee penetrations.

A review of the levee right of way in the vicinity of the MIRA site has identified the penetrations noted below, which includes both active and abandoned penetrations (further inspection detail on the penetrations is included in Appendix C):

1. Sta. ± 80+40M to ± 84+00M – Three (3) – 8” Steel Oil Lines

2. Sta. +/-84+21M - 12” Cast Iron Roof Drain outfall and valve chamber with gate valve and flap valve at outlet

3. Sta.84+35M +/- – Screen House #1 inlet pipe – size unknown

4. Sta. 85+21M to 85+39M – Abandoned pre-existing intake /discharge tunnels (Two 7’x8’ vertically stacked conduits built in the 1920’s) – with concrete bulkheads / plugs, gates removed and at least partially filled with sand (between the bulkheads at the ends). Actual scope of work and the condition of the penetration is unknown.

5. Sta. +/- 85+39M to +/- 87+23M – Discharge conduit associated with screen house #2 – bulkhead with sand fill. The conduit is located on the riverside and running parallel to the flood wall.

6. Sta. +/-85+27M - 1” compressed air (3” sleeve), 1.5” water service (4” sleeve) and 6” service water (10” sleeve) pipes (levee plan sheet #64) Note: sleeves run through the concrete wall elements.

7. Sta. 85+69M – 8” oil line & 4” steam line pipes encased in concrete box & footing with insulation. Note: These pipes appear to have been encountered during the Closure Structure Renovation Project and were properly abandoned. The only concern is that location of the two penetrations differs from the levee record drawings. Need to verify that no additional lines were installed since the original levee construction.

8. Sta. 86+77.5M - 48” steel intake pipe

9. Sta. 86+80M – Ash pit outfall 10” CIP and valve chamber with gate valve & flap gate at outfall

10. Sta. 87+36M - 48” steel pipe to screen house (levee plan sheet #65)

11. Sta. 87+40M - 14” pipe – use unknown

12. Sta. 87+39M – 48” intake pipe

13. Sta. 87+85M - 48” discharge pipe

Materials Innovation and Recycling Authority (MIRA)– Hartford, CT May 10, 2022

13. Sta. 89+10M - Ash pit outfall – 12” CIP below floodwall and valve chamber with gate valve & flap gate at outlet (levee plan sheet #68B)

14. Sta. 90+75M - Ash pit outfall (levee plan sheet #67)

3. Other Levee Safety Concerns

In addition to concerns with the penetrations listed above, the City has also previously notified MIRA about activities within the Levee right of way/Floodwall easement which continue to need MIRA’s attention and action. Please see list below:

1. Encroachments within the City’s floodwall easement and the facility’s equipment which is attached to the concrete floodwall.

2. Various structures located on the riverside embankment as well as overhead crossings of the levee which are located within the floodwall easement and/or may impact embankment stability.

3. Ongoing vegetation control on the Riverside embankments

4. Need for an Emergency Preparedness Plan (EPP) based the operation and maintenance manual and protocols for their facilities which impact the Levee System. Operations located outside of the levee right of way/easement might be required if a levee pentation must be isolated in the event of a failure of the penetration. The EPP must address MIRA’s operations and emergency responses during flood events, including the protocol to isolate levee penetrations during a flood event. The City intends to incorporate all third party EPP’s into the federally approved Operation and Maintenance Manual for the System.

4. Decommissioning of MIRA Facility

The decommissioning of MIRA Trash to Energy Facility in 2022 is a major concern. The City is particularly interested in the future responsibilities for maintaining and operating MIRA’s infrastructure in accordance with the regulatory requirements as well as the impacts on the City’s operation and maintenance activities associated with the System. The Hartford Department of Public Works (DPW) needs 24/7 access to operate & maintain the levee, floodwalls and closure structures including flood fighting activities.

The City is particularly interested in how the responsibilities for maintaining and operating MIRA’s infrastructure will be transitioned. As part of the discussions with MIRA about EAP planning, identifying whether MIRA or a successor entity will assume these responsibilities will be a key element. A more specific listing of concerns relating to the decommissioning and beyond are Included in Appendix B.

5. Initial Request for MIRA Involvement and Assistance

In order to initiate this process, we are requesting that MIRA cooperate with the City in its effort to produce a viable Emergency Action Plan. Specifically, the City requests that MIRA take the following actions to assist in this process:

Materials Innovation and Recycling Authority Site (MIRA)– Hartford, CT

Appendix A

Federal Inspection Requirements associated with Levee Penetrations

Notice: Inspection and overall management for Levee Penetration on federal flood control projects requires compliance with U.S. Army Corps of Engineers “EM 1110-2-2902

“Conduits, Pipes, and Culverts associated with Dams and Levee Systems” dated

12/31/2020. This full document is incorporated by reference and is available at the USACE

Publications website at:

https://www.publications.usace.army.mil/Portals/76/Users/182/86/2486/EM%201110-2-

%202902a.pdf?ver=6N64KR0IND2lmoG3X1LFhg%3d%3d

The following inspection elements are among the requirements contained within EM

1110-2-2902:

1. Required inspections of all levee penetrations include:

a. Quarterly (every 90 days) a visual inspection of the ground surface above the levee penetration.

b. Quarterly (every 90 days) an inspection and operation of closure structures, gate valves, backflow preventers, flap gates, etc.

c. Annual inspection of all structures including a visual inspection of the interior of the structure.

d. Periodic (every 5 years) a CCTV or physical inspection / evaluation of the condition of the penetration.

e. Documentation of the required inspections by the organization needs to be submitted to the City. The information will be transmitted to the USACE with the City’s required semi-annual reporting for review.

f. Elements of the penetrations located within MIRA facilities will not be inspected by

DPW personnel. Various penetrations and elements constructed as part of the System were installed within the building to accommodate the original plant. MIRA will be responsible for all inspections which require access to MIRA structures.

https://www.publications.usace.army.mil/Portals/76/Users/182/86/2486/EM%201110-2-%202902a.pdf?ver=6N64KR0IND2lmoG3X1LFhg%3d%3d https://www.publications.usace.army.mil/Portals/76/Users/182/86/2486/EM%201110-2-%202902a.pdf?ver=6N64KR0IND2lmoG3X1LFhg%3d%3d

Appendix B

City of Hartford (Connecticut River Right Bank Flood Reduction System) special concerns and recommendations re: Decommissioning of MIRA Trash to Energy Facility

1. An Emergency Action Plan (EAP) must be developed by the City with MIRA’s assistance associated with their facility.

2. An Emergency Preparedness Plan (EPP) must be developed by MIRA which outlines their responsibilities for operation and emergency preparedness planning for the portions of infrastructure that directly impact the flood control system.

3. DPW must have 24/7 access to the MIRA site to operate & maintain the levee, floodwalls and closure structures including flood fighting activities per 33 CFR 208.10 and the federally approved Operation & Maintenance Manual for the Levee System.

4. Currently, MIRA conducts the grass cutting and other vegetation maintenance within the

System. This effort must continue after the operations are shutdown.

5. All vehicles, dumpsters, debris and stored material must be removed from the levee right of way / easement.

6. All site features, utilities, pipelines, levee penetrations, encroachments, etc. which are no longer necessary for the operation of the facility which are located within the levee right of way are to properly removed / abandoned. Greater Hartford Flood Commission, USACE Levee Safety and CT DEEP Dam Safety permits are to be obtained. Work and restoration of the levee ROW is to meet all federal, state and local requirements.

a. Features located to the landside of the levee / floodwall that need to be removed or abandoned.

1) Storage tanks located within the levee ROW.

2) Stairs, railings, fence lines, etc.

3) Utilities / pipelines are to be properly abandoned. Various pipelines appear to have been capped but not grout filled. The pipes are to be removed within the levee right of way / easement.

4) Various elements related to flood control were installed within the existing trash to energy building in the past. These elements are to be properly abandoned.

MIRA will remain responsible to properly operate and maintain these elements until they are properly abandoned. Additional information on the recent visual inspection completed by DPW is found in Appendix C.

5) All levee penetrations with access structures such as manholes are to be repaired and proper covers to be installed until the levee penetrations are properly abandoned.

6) Provision are to be undertaken to properly maintain the abandoned trash to energy building until the structure is razed. This is critical to ensure a safe work environment for DPW flood control, personnel and contractors working on the

System in the vicinity of MIRA’s infrastructure and buildings.

b. Features located on, overhead and beneath the levee and floodwall that need to be removed or abandoned.

1) All levee penetrations including third party penetrations which are currently inactive or become inactive when operations cease are to be properly abandoned including the large diameter intake piping, discharge piping, petroleum pipelines, etc.

2) Existing abandoned levee penetrations are to be properly abandoned to the satisfaction of the USACE. (i.e. dual conduit – concrete plug and wooden bulkhead with sand fill)

3) Any levee penetration which is to remain must be properly maintained and inspected per the federal requirements. All valves and gates are to be maintained and exercised to insure they function properly. Routine and periodic levee penetration inspections are required to comply with the USACE requirements.

4) Stairs and platforms are to be removed

5) Conveyors and other overhead pipelines/ features are to be removed.

6) All utilities, conduits, supports, lighting, etc. which are mounted on the concrete floodwall must be properly removed from the floodwall to the satisfaction of the federal, state and local requirements

c. Features located on the riverside of the levee / floodwall that must be removed or properly abandoned

1) Elements located on the riverside of the levee include but are not limited to the following: breakwater, former screen houses, chlorine house, coal tower, transfer house, overhead conveyor, handrails, fencing, discharge outfalls, etc. (Note:

structure identification is based on original levee plans. The use and infrastructure identified on the original System plans may have changed since the original construction). Any element that impacts the operation and maintenance of the levee system currently or in the future must be removed. Concerns about the impacts of the deteriorating infrastructure on the worker safety as well as the levee system

2) All equipment, structures, piping, walkway, handrails, etc. features located on the riverside of the levee / floodwall should be removed and the area restored to the

GHFC, USACE Levee Safety and CT DEEP Dam Safety requirements including:

• Intake / Discharge structures

• Utility lines & pipelines

• Screen houses

• Coal tower

• Conveyor system

• N/F Chlorine house

7. Provisions are to be undertaken to properly maintain the abandon structures on both sides of the levee/floodwall until the structures are razed / abandoned to ensure a safe condition for individuals working in the area.

8. All vegetation must be maintained, and woody growth removed per USACE EP 110-2-

18. Significant woody growth has become established on the riverside of the levee rip rap revetment / floodwall that needs to be removed.

9. Closure Structure #4 is to remain operable regardless of whether MIRA or its successors have a continued need to access facilities on the river side of the floodwall. Access to the riverside is still required to allow for maintenance and repair work on the riverside components or the floodwall itself. Although Closure 4 must remain operable, it may be left in the closed position (panels installed).

10. All site drainage connections to the levee toe / collector system should be evaluated for possible abandonment. Potential connections include piping the former HELCO yard sump.

Appendix C MIRA Levee Penetration Inspections incl. Site Photos

• The attached documents consist of inspection records and photos taken as part of a visual inspection conducted in 2021 by consultants employed by the City. The records and photographs are intended to provide a general representation of the condition of the site components and features, such as penetrations, that pose levee safety risks and on-going concerns within the MIRA site. Changes to condition may have occurred since the date of the inspections, and continued monitoring is required to assess current conditions.

Hartford Flood Control System Inspections - 2021

Page: 1 of 5 Type: Utility Penetration

Utility Penetration ID No: HD-35

F:\P2013\1340\F46-Levee Penetration Inspections FY2021\Deliverables\Task 2 - Summary Report\Hartford Dike Reports

Inspector(s): Jason Hofmann and Robert Terlikowski Company: Fuss & O’Neill Inc.

Date(s): August 26, 2021

Levee Section name, Circle One: North Meadows Dike / Hartford Dike / Clark (South Meadows) Dike

Station Number: 85+65

Owner: MIRA Trash-to-Energy Facility Circle One: Confirmed / Assumed

Inspection Method, Circle One: Interior Visual / Interior Remote / Exterior Visual / Other: ___________

Date(s): August 26, 2021

If recommended inspection method was not used, describe why:

Purpose, Circle One: Storm / Electric / Telecom / Water / Sewer / Oil / Unknown /

Other: __________________________________________________________________________

Pipe Material, Circle One: Vitrified Clay / CMP / RCP / Cast Iron / DI / Brick / Steel / Fiberglass / Unknown / Other: _______________________

Pipe Diameter / Size of Penetration: 8” Pipe, 4” Pipe

Location Information Note: Use a sub-foot GPS unit and record to at least 6 decimal places in decimal degrees or with 2 significant digits on the seconds value in DMS.

Item Latitude Longitude Headwall 41.751142 72.653744 Inlet Outlet Other (Standpipe, Utility Box, Etc.):

Page: 2 of 5 Type: Utility Penetration

Utility Penetration ID No: HD-35

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Condition Summary Note any deficiencies including cracks, holes, structural issues, voids, uneven horizontal or vertical alignment, erosion, sealing, corrosions, rusting, flaking, sediment, obstructions, etc.

Deficiency Details Recommended Action Photo No.

Not in use Terminate pipe before and after floodwall 35-1-5

Debris and broken pipe present When pipe is terminated, clean up debris and fix concrete on river side floodwall

35-3, 35-5, 35-7, 35-9

Photos

Photo 35-1: Location where pipe penetrates floodway Photo from previous inspection on July 25, 2016

Page: 3 of 5 Type: Utility Penetration

Utility Penetration ID No: HD-35

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Photo 35-2 and 35-3: Broken oil line pipe Previous inspection from July 25, 2016 on left, August 26, 2021 inspection on right

Photo 35-4 and 35-5: Capped location at floodwall Previous inspection from July 25, 2016 on left, August 26, 2021 inspection on right

Page: 4 of 5 Type: Utility Penetration

Utility Penetration ID No: HD-35

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Photo 35-6 and 35-7: Other pipe located in concrete trough Previous inspection from July 25, 2016 on left, August 26, 2021 inspection on right

Photo 35-8 and 35-9: Overview of location Previous inspection from July 25, 2016 on left, August 26, 2021 inspection on right

Page: 5 of 5 Type: Utility Penetration

Utility Penetration ID No: HD-35

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Photos 35-10 and 35-11: Overview of catch basin that connects to piping system on the other side of the flood wall; from inspection on August 26, 2021

Photo 35-12: Relative location of catch basin to MIRA facility

Page: 1 of 4 Type: Utility Penetration

Utility Penetration ID No: HD-36

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Inspector(s): Jason Hofmann and Robert Terlikowski Company: Fuss & O’Neill Inc.

Date(s): August 26, 2021

Levee Section name, Circle One: North Meadows Dike / Hartford Dike / Clark (South Meadows) Dike

Station Number: 84+21

Owner: MIRA Trash-to-Energy Facility Circle One: Confirmed / Assumed

Inspection Method, Circle One: Interior Visual / Interior Remote / Exterior Visual / Other: ___________

Date(s): August 26, 2021

If recommended inspection method was not used, describe why:

Purpose, Circle One: Storm / Electric / Telecom / Water / Sewer / Oil / Unknown /

Other: __________________________________________________________________________

Pipe Material, Circle One: Vitrified Clay / CMP / RCP / Cast Iron / DI / Brick / Steel / Fiberglass / Unknown / Other: _______________________

Pipe Diameter / Size of Penetration: 12” Pipe

Location Information Note: Use a sub-foot GPS unit and record to at least 6 decimal places in decimal degrees or with 2 significant digits on the seconds value in DMS.

Item Latitude Longitude Headwall Inlet Outlet 41.750625 72.652603

Page: 2 of 4 Type: Utility Penetration

Utility Penetration ID No: HD-36

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Condition Summary Note any deficiencies including cracks, holes, structural issues, voids, uneven horizontal or vertical alignment, erosion, sealing, corrosions, rusting, flaking, sediment, obstructions, etc.

Deficiency Details Recommended Action Photo No.

Dense vegetation present Vegetation control 36-2

Photos

Photo 36-1 and 36-2: Outfall location for HD-36 Previous Inspection from September 14, 2016 on left, August 26, 2021 inspection on right

Page: 3 of 4 Type: Utility Penetration

Utility Penetration ID No: HD-36

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Photo 36-3: Close up of HD-36 Previous Inspection from September 14, 2016 on left, August 27, 2021 inspection on right

Page: 4 of 4 Type: Utility Penetration

Utility Penetration ID No: HD-36

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Photo 36-4: Levee condition of HD-36 from August 26, 2021 inspection

Page: 1 of 3 Type: Utility Penetration

Utility Penetration ID No: HD-37

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Inspector(s): Jason Hofmann and Robert Terlikowski Company: Fuss & O’Neill Inc.

Date(s): August 26, 2021

Levee Section name, Circle One: North Meadows Dike / Hartford Dike / Clark (South Meadows) Dike

Station Number: 85+28

Owner: MIRA Trash-to-Energy Facility Circle One: Confirmed / Assumed

Inspection Method, Circle One: Interior Visual / Interior Remote / Exterior Visual / Other: ___________

Date(s): August 26, 2021

If recommended inspection method was not used, describe why:

Utility penetration is below grade and could not be located. However, is assumed to be abandoned.

Purpose, Circle One: Storm / Electric / Telecom / Water / Sewer / Oil / Unknown

Other: __________________________________________________________________________

Pipe Material, Circle One: Vitrified Clay / CMP / RCP / Cast Iron / DI / Brick / Steel / Fiberglass / Unknown / Other: _______________________

Pipe Diameter / Size of Penetration: Unknown

Location Information Note: Use a sub-foot GPS unit and record to at least 6 decimal places in decimal degrees or with 2 significant digits on the seconds value in DMS.

Item Latitude Longitude Headwall Inlet

Page: 2 of 3 Type: Utility Penetration

Utility Penetration ID No: HD-37

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Condition Summary Note any deficiencies including cracks, holes, structural issues, voids, uneven horizontal or vertical alignment, erosion, sealing, corrosions, rusting, flaking, sediment, obstructions, etc.

Deficiency Details Recommended Action Photo No.

No Deficiencies Observed

Photos

Photo 41-1 and 41-2: Overview of oil line

Page: 3 of 3 Type: Utility Penetration

Utility Penetration ID No: HD-37

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Photo 41-3 and 41-4: Oil line relative to floodwall Previous Inspection from September 14 , 2016 on left, August 26, 2021 inspection on right

Photo 41-5 and 41-6: Approximate location oil line penetrates floodwall

Page: 1 of 8 Type: Utility Penetration

Utility Penetration ID No: HD-38

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Inspector(s): Jason Hofmann and Robert Terlikowski Company: Fuss & O’Neill Inc.

Date(s): November 4, 2021

Levee Section name, Circle One: North Meadows Dike / Hartford Dike / Clark (South Meadows) Dike

Station Number: 84+21 to 85+39

Owner: MIRA Trash-to-Energy Facility Circle One: Confirmed / Assumed

Inspection Method, Circle One: Interior Visual / Interior Remote / Exterior Visual / Other: ___________

Date(s): November 4, 2021

If recommended inspection method was not used, describe why:

Purpose, Circle One: Storm / Electric / Telecom / Water / Sewer / Oil / Unknown /

Other: __________________________________________________________________________

Pipe Material, Circle One: Vitrified Clay / CMP / RCP / Cast Iron / DI / Brick / Steel / Fiberglass / Unknown / Other: _______________________

Pipe Diameter / Size of Penetration: Unknown

Location Information Note: Use a sub-foot GPS unit and record to at least 6 decimal places in decimal degrees or with 2 significant digits on the seconds value in DMS.

Item Latitude Longitude Headwall Inlet

Page: 2 of 8 Type: Utility Penetration

Utility Penetration ID No: HD-38

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Condition Summary Note any deficiencies including cracks, holes, structural issues, voids, uneven horizontal or vertical alignment, erosion, sealing, corrosions, rusting, flaking, sediment, obstructions, etc.

Deficiency Details Recommended Action Photo No.

Leaking present at left pump Repair leak and/or ensure that leaking does not affect condition of penetration

38-14

Photos

Photo 38-1 and 38-2: Gate Valve Operator 1 of 2 Previous Inspection from September 14, 2016 on left, November 4, 2021 inspection on right

Page: 3 of 8 Type: Utility Penetration

Utility Penetration ID No: HD-38

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Photo 38-3 and 38-4: Gate Valve Operator 2 of 2 Previous Inspection from September 14, 2016 on left, November 4, 2021 inspection on right

Photo 38-5 and 38-6: Screen House No. 1 Right Side Pump as of September 14, 2016

Page: 4 of 8 Type: Utility Penetration

Utility Penetration ID No: HD-38

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Photo 38-7 to 38-10: Screen House No.1 Right Side Pump as of November 4, 2021

Page: 5 of 8 Type: Utility Penetration

Utility Penetration ID No: HD-38

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Photo 38-11 to 38-14: Screen House No. 1 Left Side Pump as of November 4, 2021

Page: 6 of 8 Type: Utility Penetration

Utility Penetration ID No: HD-38

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Photo 38-15 and 38-16: Gate Valve Operators for Exterior Gate Previous Inspection from September 14, 2016 on left, November 4, 2021 inspection on right

Photo 38-17 and 38-18: Gate Valve Operators for Exterior Gate

Page: 7 of 8 Type: Utility Penetration

Utility Penetration ID No: HD-38

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Photos 38-19 and 38-20: Intake Conduit for Screen House 1 in Root Cellar of MIRA

Photo 38-21: Conduit Flange Condition from November 4, 2021 inspection

Page: 8 of 8 Type: Utility Penetration

Utility Penetration ID No: HD-38

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Photo 38-22: Pipe Elbow Condition from November 4, 2021 inspection

Page: 1 of 2 Type: Utility Penetration

Utility Penetration ID No: HD-39

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Inspector(s): Jason Hofmann and Robert Terlikowski Company: Fuss & O’Neill Inc.

Date(s): November 4, 2021

Levee Section name, Circle One: North Meadows Dike / Hartford Dike / Clark (South Meadows) Dike

Station Number: Unknown

Owner: MIRA Trash-to-Energy Facility Circle One: Confirmed / Assumed

Inspection Method, Circle One: Interior Visual / Interior Remote / Exterior Visual / Other: ___________

Date(s): November 4, 2021

If recommended inspection method was not used, describe why:

Utility penetration is below grade and could not be located. However, is assumed to be abandoned.

Purpose, Circle One: Storm / Electric / Telecom / Water / Sewer / Oil / Unknown /

Other: __________________________________________________________________________

Pipe Material, Circle One: Vitrified Clay / CMP / RCP / Cast Iron / DI / Brick / Steel / Fiberglass / Unknown / Other: _______________________

Pipe Diameter / Size of Penetration: Unknown

Location Information Note: Use a sub-foot GPS unit and record to at least 6 decimal places in decimal degrees or with 2 significant digits on the seconds value in DMS.

Item Latitude Longitude Headwall Inlet

Page: 2 of 2 Type: Utility Penetration

Utility Penetration ID No: HD-39

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Condition Summary Note any deficiencies including cracks, holes, structural issues, voids, uneven horizontal or vertical alignment, erosion, sealing, corrosions, rusting, flaking, sediment, obstructions, etc.

Deficiency Details Recommended Action Photo No.

No Deficiencies Observed

Photos

Type: Utility Penetration

Utility Penetration ID No: HD-40

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Inspector(s): Jason Hofmann and Robert Terlikowski Company: Fuss & O’Neill Inc.

Date(s): November 4, 2021

Levee Section name, Circle One: North Meadows Dike / Hartford Dike / Clark (South Meadows) Dike

Station Number: Unknown

Owner: MIRA Trash-to-Energy Facility Circle One: Confirmed / Assumed

Inspection Method, Circle One: Interior Visual / Interior Remote / Exterior Visual / Other: ___________

Date(s): November 4, 2021

If recommended inspection method was not used, describe why:

Utility penetration is below grade and could not be located. However, is assumed to be abandoned.

Purpose, Circle One: Storm / Electric / Telecom / Water / Sewer / Oil / Unknown /

Other: __________________________________________________________________________

Pipe Material, Circle One: Vitrified Clay / CMP / RCP / Cast Iron / DI / Brick / Steel / Fiberglass / Unknown / Other: _______________________

Pipe Diameter / Size of Penetration: Unknown

Location Information Note: Use a sub-foot GPS unit and record to at least 6 decimal places in decimal degrees or with 2 significant digits on the seconds value in DMS.

Item Latitude Longitude Headwall Inlet

Type: Utility Penetration

Utility Penetration ID No: HD-40

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Condition Summary Note any deficiencies including cracks, holes, structural issues, voids, uneven horizontal or vertical alignment, erosion, sealing, corrosions, rusting, flaking, sediment, obstructions, etc.

Deficiency Details Recommended Action Photo No.

Type: Utility Penetration

Utility Penetration ID No: HD-41

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Inspector(s): Jason Hofmann and Robert Terlikowski Company: Fuss & O’Neill Inc.

Date(s): August 26, 2021

Levee Section name, Circle One: North Meadows Dike / Hartford Dike / Clark (South Meadows) Dike

Station Number: 85+60

Owner: MIRA Trash-to-Energy Facility Circle One: Confirmed / Assumed

Inspection Method, Circle One: Interior Visual / Interior Remote / Exterior Visual / Other: ___________

Date(s): August 26, 2021

If recommended inspection method was not used, describe why:

Purpose, Circle One: Storm / Electric / Telecom / Water / Sewer / Oil / Unknown /

Other: __________________________________________________________________________

Pipe Material, Circle One: Vitrified Clay / CMP / RCP / Cast Iron / DI / Brick / Steel / Fiberglass / Unknown / Other: _______________________

Pipe Diameter / Size of Penetration: 8” Pipe

Location Information Note: Use a sub-foot GPS unit and record to at least 6 decimal places in decimal degrees or with 2 significant digits on the seconds value in DMS.

Item Latitude Longitude Headwall Inlet Outlet Other (Standpipe, Utility Box, Etc.):

Condition Summary Note any deficiencies including cracks, holes, structural issues, voids, uneven horizontal or vertical alignment, erosion, sealing, corrosions, rusting, flaking, sediment, obstructions, etc.

Deficiency Details Recommended Action Photo No.

Type: Utility Penetration

Utility Penetration ID No: HD-41

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Photos

Photo 41-1 and 41-2: Location of HD-37 Previous Inspection from September 14, 2016 on left, August 28, 2021 inspection on right

Type: Utility Penetration

Utility Penetration ID No: HD-42

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Inspector(s): Jason Hofmann and Robert Terlikowski Company: Fuss & O’Neill Inc.

Date(s): November 4, 2021

Levee Section name, Circle One: North Meadows Dike / Hartford Dike / Clark (South Meadows) Dike

Station Number: 85+65 M

Owner: MIRA Trash-to-Energy Facility Circle One: Confirmed / Assumed

Inspection Method, Circle One: Interior Visual / Interior Remote / Exterior Visual / Other: ___________

Date(s): November 4, 2021

If recommended inspection method was not used, describe why:

Utility penetration is abandoned, and below grade, could not be located

Purpose, Circle One: Storm / Electric / Telecom / Water / Sewer / Oil / Unknown /

Other: __________________________________________________________________________

Pipe Material, Circle One: Vitrified Clay / CMP / RCP / Cast Iron / DI / Brick / Steel / Fiberglass / Unknown / Other: _______________________

Pipe Diameter / Size of Penetration: 8” Oil Pipe, 4” Steam Pipe in Concrete Trough

Location Information Note: Use a sub-foot GPS unit and record to at least 6 decimal places in decimal degrees or with 2 significant digits on the seconds value in DMS.

Item Latitude Longitude Headwall Inlet

Type: Utility Penetration

Utility Penetration ID No: HD-42

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Condition Summary Note any deficiencies including cracks, holes, structural issues, voids, uneven horizontal or vertical alignment, erosion, sealing, corrosions, rusting, flaking, sediment, obstructions, etc.

Deficiency Details Recommended Action Photo No.

Type: Utility Penetration

Utility Penetration ID No: HD-43

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Inspector(s): Jason Hofmann and Robert Terlikowski Company: Fuss & O’Neill Inc.

Date(s): November 4, 2021

Levee Section name, Circle One: North Meadows Dike / Hartford Dike / Clark (South Meadows) Dike

Station Number: 86+77

Owner: MIRA Trash-to-Energy Facility Circle One: Confirmed / Assumed

Inspection Method, Circle One: Interior Visual / Interior Remote / Exterior Visual / Other: ___________

Date(s): November 4, 2021

If recommended inspection method was not used, describe why:

Purpose, Circle One: Storm / Electric / Telecom / Water / Sewer / Oil / Unknown /

Other: __________________________________________________________________________

Pipe Material, Circle One: Vitrified Clay / CMP / RCP / Cast Iron / DI / Brick / Steel / Fiberglass / Unknown / Other: _______________________

Pipe Diameter / Size of Penetration: 48” Pipe

Location Information Note: Use a sub-foot GPS unit and record to at least 6 decimal places in decimal degrees or with 2 significant digits on the seconds value in DMS.

Item Latitude Longitude Headwall Inlet

Type: Utility Penetration

Utility Penetration ID No: HD-43

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Condition Summary Note any deficiencies including cracks, holes, structural issues, voids, uneven horizontal or vertical alignment, erosion, sealing, corrosions, rusting, flaking, sediment, obstructions, etc.

Deficiency Details Recommended Action Photo No.

Noticeable pipe wear observed Repair pipe and its coating and/or ensure that condition does not affect structural integrity of pipe penetration

43-6

Photos

Photo 43-1 and 43-2: Overview of HD-43 in MIRA plant, showing previous repair done on joint Taken from previous inspection from September 14, 2016

Type: Utility Penetration

Utility Penetration ID No: HD-43

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Photo 43-3 and 43-4: Overview of HD-43 in MIRA plant Taken from November 4, 2021 inspection

Type: Utility Penetration

Utility Penetration ID No: HD-43

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Photo 43-5 and 43-6: Overview of HD-43 in screen house 3 from November 4, 2021 inspection

Type: Utility Penetration

Utility Penetration ID No: HD-44

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Inspector(s): Jason Hofmann and Robert Terlikowski Company: Fuss & O’Neill Inc.

Date(s): November 4, 2021

Levee Section name, Circle One: North Meadows Dike / Hartford Dike / Clark (South Meadows) Dike

Station Number: 87+38

Owner: MIRA Trash-to-Energy Facility Circle One: Confirmed / Assumed

Inspection Method, Circle One: Interior Visual / Interior Remote / Exterior Visual / Other: ___________

Date(s): November 4, 2021

If recommended inspection method was not used, describe why:

Purpose, Circle One: Storm / Electric / Telecom / Water / Sewer / Oil / Unknown /

Other: __________________________________________________________________________

Pipe Material, Circle One: Vitrified Clay / CMP / RCP / Cast Iron / DI / Brick / Steel / Fiberglass / Unknown / Other: _______________________

Pipe Diameter / Size of Penetration: 48” Pipe

Location Information Note: Use a sub-foot GPS unit and record to at least 6 decimal places in decimal degrees or with 2 significant digits on the seconds value in DMS.

Item Latitude Longitude Headwall Inlet Outlet Other (Standpipe, Utility Box, Etc.):

Condition Summary Note any deficiencies including cracks, holes, structural issues, voids, uneven horizontal or vertical alignment, erosion, sealing, corrosions, rusting, flaking, sediment, obstructions, etc.

Deficiency Details Recommended Action Photo No.

Large amounts of debris observed Maintain cleanliness at wall penetration 44-3, 44-4

Type: Utility Penetration

Utility Penetration ID No: HD-44

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Photos

Photo 44-1 and 44-2: Overview of HD-44 entering (left) and exiting (right) MIRA plant from previous inspection on September 14, 2016

Photo 44-3 and 44-4: Pipe penetration condition of HD-44 from November 4, 2021 inspection

Page: 1 of 5 Type: Utility Penetration

Utility Penetration ID No: HD-45

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Inspector(s): Jason Hofmann and Robert Terlikowski Company: Fuss & O’Neill Inc.

Date(s): November 4, 2021

Levee Section name, Circle One: North Meadows Dike / Hartford Dike / Clark (South Meadows) Dike

Station Number: 87+42

Owner: MIRA Trash-to-Energy Facility Circle One: Confirmed / Assumed

Inspection Method, Circle One: Interior Visual / Interior Remote / Exterior Visual / Other: ___________

Date(s): November 4, 2021

If recommended inspection method was not used, describe why:

Purpose, Circle One: Storm / Electric / Telecom / Water / Sewer / Oil / Unknown /

Other: __________________________________________________________________________

Pipe Material, Circle One: Vitrified Clay / CMP / RCP / Cast Iron / DI / Brick / Steel / Fiberglass / Unknown / Other: _______________________

Pipe Diameter / Size of Penetration: 14” Pipe

Location Information Note: Use a sub-foot GPS unit and record to at least 6 decimal places in decimal degrees or with 2 significant digits on the seconds value in DMS.

Item Latitude Longitude Headwall Inlet Outlet Other (Standpipe, Utility Box, Etc.):

Condition Summary Note any deficiencies including cracks, holes, structural issues, voids, uneven horizontal or vertical alignment, erosion, sealing, corrosions, rusting, flaking, sediment, obstructions, etc.

Deficiency Details Recommended Action Photo No.

Deteriorating concrete between pipes Repair and/or confirm defect does not affect the structural integrity of the levee penetration

45-8

Noticeable debris observed Maintain cleanliness around wall penetration

45-8

Page: 2 of 5 Type: Utility Penetration

Utility Penetration ID No: HD-45

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Photos

Photo 45-1 and 45-2: Gate valve operator for HD-45 Previous Inspection from September 14, 2016 on left, November 4, 2021 inspection on right

Photo 45-3 and 45-4: Overview of utility penetration location.

Page: 3 of 5 Type: Utility Penetration

Utility Penetration ID No: HD-45

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Photo 45-5 and 45-6: Condition of Screen Room Penetrations from November 4, 2021 inspection

Page: 4 of 5 Type: Utility Penetration

Utility Penetration ID No: HD-45

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Photo 45-7: View of Pipe Penetration from November 4, 2021 inspection

Photo 45-8: View of HD-45 (left) and HD-46 (right) Penetrations from November 4, 2021 inspection

Page: 5 of 5 Type: Utility Penetration

Utility Penetration ID No: HD-45

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Photo 45-9: Relative location from Pipe from November 4, 2021 inspection

Type: Utility Penetration

Utility Penetration ID No: HD-46

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Inspector(s): Jason Hofmann and Robert Terlikowski Company: Fuss & O’Neill Inc.

Date(s): November 4, 2021

Levee Section name, Circle One: North Meadows Dike / Hartford Dike / Clark (South Meadows) Dike

Station Number: 87+65

Owner: MIRA Trash-to-Energy Facility Circle One: Confirmed / Assumed

Inspection Method, Circle One: Interior Visual / Interior Remote / Exterior Visual / Other: ___________

Date(s): November 4, 2021

If recommended inspection method was not used, describe why:

Purpose, Circle One: Storm / Electric / Telecom / Water / Sewer / Oil / Unknown /

Other: __________________________________________________________________________

Pipe Material, Circle One: Vitrified Clay / CMP / RCP / Cast Iron / DI / Brick / Steel / Fiberglass / Unknown / Other: _______________________

Pipe Diameter / Size of Penetration: 48” Pipe

Location Information Note: Use a sub-foot GPS unit and record to at least 6 decimal places in decimal degrees or with 2 significant digits on the seconds value in DMS.

Item Latitude Longitude Headwall Inlet

Type: Utility Penetration

Utility Penetration ID No: HD-46

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Condition Summary Note any deficiencies including cracks, holes, structural issues, voids, uneven horizontal or vertical alignment, erosion, sealing, corrosions, rusting, flaking, sediment, obstructions, etc.

Deficiency Details Recommended Action Photo No.

Noticeable debris observed Maintain cleanliness at pipe penetration 46-2

Deteriorating concrete between pipes Repair and/or confirm defect does not affect the structural integrity of the levee penetration

46-2

Photos

Photos 46-1 and 46-2: Overview of HD-46 at MIRA Plant Left from previous inspection on September 14, 2016, right from November 4, 2021 inspection

Type: Utility Penetration

Utility Penetration ID No: HD-46

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Photo 46-3: Pipe Discharge into Discharge Canal from August 26, 2021 inspection

Type: Utility Penetration

Utility Penetration ID No: HD-47

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Inspector(s): Jason Hofmann and Robert Terlikowski Company: Fuss & O’Neill Inc.

Date(s): November 4, 2021

Levee Section name, Circle One: North Meadows Dike / Hartford Dike / Clark (South Meadows) Dike

Station Number: 86+85

Owner: MIRA Trash-to-Energy Facility Circle One: Confirmed / Assumed

Inspection Method, Circle One: Interior Visual / Interior Remote / Exterior Visual / Other: ___________

Date(s): November 4, 2021

If recommended inspection method was not used, describe why:

Purpose, Circle One: Storm / Electric / Telecom / Water / Sewer / Oil / Unknown /

Other: __________________________________________________________________________

Pipe Material, Circle One: Vitrified Clay / CMP / RCP / Cast Iron / DI / Brick / Steel / Fiberglass / Unknown / Other: _______________________

Pipe Diameter / Size of Penetration: 48” Pipe

Location Information Note: Use a sub-foot GPS unit and record to at least 6 decimal places in decimal degrees or with 2 significant digits on the seconds value in DMS.

Item Latitude Longitude Headwall Inlet

Type: Utility Penetration

Utility Penetration ID No: HD-47

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Condition Summary Note any deficiencies including cracks, holes, structural issues, voids, uneven horizontal or vertical alignment, erosion, sealing, corrosions, rusting, flaking, sediment, obstructions, etc.

Deficiency Details Recommended Action Photo No.

Severe cracking observed at pipe wall connection Repair and/or confirm that cracking does not affect structural integrity of levee penetration

47-3, 47-4

Photos

Photo 47-1 and 47-2: Overview of HD-47 from dirt cellar from previous inspection on September 14, Type: Utility Penetration

Utility Penetration ID No: HD-47

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Photo 47-3 and 47-4: HD-47 Pipe Penetration Condition from November 4, 2021 inspection

Photo 47-5: HD-47 Pipe Discharge into Discharge Canal from August 26, 2021 inspection

Type: Utility Penetration

Utility Penetration ID No: HD-47

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Type: Utility Penetration

Utility Penetration ID No: HD-48

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Inspector(s): Jason Hofmann and Robert Terlikowski Company: Fuss & O’Neill Inc.

Date(s): August 28, 2021

Levee Section name, Circle One: North Meadows Dike / Hartford Dike / Clark (South Meadows) Dike

Station Number: 89+3.65

Owner: MIRA Trash-to-Energy Facility Circle One: Confirmed / Assumed

Inspection Method, Circle One: Interior Visual / Interior Remote / Exterior Visual / Other: ___________

Date(s): August 28, 2021

If recommended inspection method was not used, describe why:

Purpose, Circle One: Storm / Electric / Telecom / Water / Sewer / Oil / Unknown /

Other: __________________________________________________________________________

Pipe Material, Circle One: Vitrified Clay / CMP / RCP / Cast Iron / DI / Brick / Steel / Fiberglass / Unknown / Other: _______________________

Pipe Diameter / Size of Penetration: 12” Pipe

Location Information Note: Use a sub-foot GPS unit and record to at least 6 decimal places in decimal degrees or with 2 significant digits on the seconds value in DMS.

Item Latitude Longitude Headwall Inlet

Other (Standpipe, Utility Box, Etc.): Manhole 41.749390 N 72.650740 W

Type: Utility Penetration

Utility Penetration ID No: HD-48

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Condition Summary Note any deficiencies including cracks, holes, structural issues, voids, uneven horizontal or vertical alignment, erosion, sealing, corrosions, rusting, flaking, sediment, obstructions, etc.

Deficiency Details Recommended Action Photo No.

None Observed

Photos

Photo 48-1 and 48-2: Overview of HD-48 location

Type: Utility Penetration

Utility Penetration ID No: HD-48

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Photo 48-3 and 48-4: Overview of manhole exterior

Type: Utility Penetration

Utility Penetration ID No: HD-49

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Insp…