41-22_TippingFloorRepairReport_20180510

1
Patrone, John
From:Seth Heath <[e-mail]>
Sent:Friday, May 11, 2018 3:45 PM
To:Patrone, John
Cc:Catherine Hernandez; Watkins, Jason; Aja, Deborah; Chao, Ming-tai
Subject:[External] RE: WI Burnt Poplar TS 41-22 Insp. Report (05/07/18)
Attachments:BP Floor Repair Summary 180510.pdf
Follow Up Flag:Follow up
Flag Status:Flagged
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John,

Please see the attached report from our engineering firm addressing your comments in the most
recent inspection report for WI’s Burnt Poplar Transfer Station. In regard items 12-16 in your
report, Waste Industries is currently working with CEI to address those needs. CEI has been made
aware of the comments in the report and Waste Industries will continue to monitor and manage
these items to ensure continued compliance. Thank you and please let me know if you have any
questions.

Best Regards,

Seth Heath General Manager
336-870-4171

From: Patrone, John [mailto:[e-mail]]
Sent: Tuesday, May 08, 2018 3:08 PM
To: Seth Heath
Cc: Catherine Hernandez; Watkins, Jason; Aja, Deborah; Chao, Ming-tai
Subject: WI Burnt Poplar TS 41-22 Insp. Report (05/07/18)

Seth, 

See link below for report of inspection of 41‐22 conducted on 05/07/18.   

2
WI Burnt Poplar TS 41‐22 Insp. Report (05/07/18) 

John 

John Patrone Environmental Senior Specialist
Division of Waste Management – Solid Waste Section Department of Environmental Quality

336-776-9673 office 919-280-4814 cell [e-mail] PO Box 16202 High Point, NC 27261

Email correspondence to and from this address is subject to the
North Carolina Public Records Law and may be disclosed to third parties.

1
Patrone, John
From:Patrone, John
Sent:Monday, May 14, 2018 11:25 AM
To:'Seth Heath'
Cc:Catherine Hernandez; Watkins, Jason; Aja, Deborah; Chao, Ming-tai
Subject:RE: [External] RE: WI Burnt Poplar TS 41-22 Insp. Report (05/07/18)
Seth, 

Thank you for your response.  It is understood that the re‐measurement of the tipping floor prior to construction in 2016 
is ~ 900 MSL and that after construction it is ~ 901.35 MSL equating to the difference [~14”] noted in the tipping floor 
repair report submitted to the SWS, dated May 10, 2018.   

No further action is required at this time.   

John 

John Patrone
Environmental Senior Specialist Division of Waste Management – Solid Waste Section
Department of Environmental Quality

336-776-9673 office 919-280-4814 cell
[e-mail]
PO Box 16202 High Point, NC 27261

Email correspondence to and from this address is subject to the
North Carolina Public Records Law and may be disclosed to third parties.

From: Seth Heath [mailto:[e-mail]]  
Sent: Monday, May 14, 2018 11:01 AM 
To: Patrone, John <[e-mail]> 
Cc: Catherine Hernandez <[e-mail]>; Watkins, Jason <[e-mail]>; 
Aja, Deborah <[e-mail]>; Chao, Ming‐tai <[e-mail]> 
Subject: [External] RE: WI Burnt Poplar TS 41‐22 Insp. Report (05/07/18) 

CAUTION: External email. Do not click links or open attachments unless verified. Send all suspicious email as an attachment to 
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John,

As discussed this morning I wanted to clarify the variance between the time periods and floor
elevations. In 2016 the elevation of the old floor was measured at approximately 900 MSL and
2
after construction to keep the floor draining properly towards the push wall the final elevations
were at 901 MSL at the wall and 901.35 MSL at the water stop. This is an additional 12-14 inches
over the preconstruction measurement of 900 MSL. Please let me know if you need any additional
information. Thank you.
Best Regards,

Seth Heath General Manager
336-870-4171

From: Seth Heath
Sent: Friday, May 11, 2018 3:45 PM
To: 'Patrone, John'
Cc: Catherine Hernandez; Watkins, Jason; Aja, Deborah; Chao, Ming-tai
Subject: RE: WI Burnt Poplar TS 41-22 Insp. Report (05/07/18)

John,

Please see the attached report from our engineering firm addressing your comments in the most
recent inspection report for WI’s Burnt Poplar Transfer Station. In regard items 12-16 in your
report, Waste Industries is currently working with CEI to address those needs. CEI has been made
aware of the comments in the report and Waste Industries will continue to monitor and manage
these items to ensure continued compliance. Thank you and please let me know if you have any
questions.

Best Regards,

Seth Heath
General Manager
336-870-4171

Atlanta www.eagleonline.net Charlotte 1-866.EAGLENC 2610 Bethany Creek Ct 2013 Van Buren Avenue Alpharetta, GA 30004 Indian Trail, NC 28079 Ph 678 339 0640 Ph 704 882 4222 Fax [phone] Fax [phone]

May 10, 2018

Seth Heath, Waste Industries LLC
302 Grumman Rd
Greensboro, NC 27409

Re: Burnt Poplar Floor Repair
Burnt Poplar Transfer Station
EEI Job # 5344
Mr. Heath,

As requested, Eagle Engineering Inc. was onsite during the floor repairs completed on May 4th,
2018. Presented below is our summary of the repairs as well as a response to your most recent questions about the initial design/installation of the BP Transfer Station Remodel Project.

Project Information

The plans submitted show the floor elevation at 904ft in 2004 and at 904ft at the end of
construction of the new floor in 2016. If we built the floor on top of the existing floor would
the elevation not have been higher? Can we get an updated elevation of the new floor?

The prior existing grade before 2016 shows an approximate elevation of 900 MSL near the rear keystone wall sloping to the east away from the wall to an ~ elevation of 899.5
at what is currently the edge of the existing building. The construction of the transfer
station in 2016 left in place the majority of the existing floor with the exception of the
perimeter wall foundations. Post 2016 construction the floor at the push wall near the
floor weep holes is ~901 MSL to an elevation of 901.35 at the inside of the water stop. Concrete compressive strengths for the poured concrete systems exceeded the design 28
day strength of 4500 psi with strengths varying from 5280 to 6280 psi.

Confirm the depth of the new patch being poured and have documentation. The floor area replaced measured approximately 35’ by 18’ which encompassed two
areas of failure in the existing wearing slab. (Photo 1 & 2, typ) The slab removed varied
Burnt Poplar TS Repair Summary EEI Project Number: 5344 Page 2 May 10, 2018

in thickness from 5.5 inches in the center of the repair area (Photo 3) to 6.5 inches along the edges parallel to the existing. (See Photo 4 thru 7)

The prepared area exposed the underlying structural slab. Since a bond break was applied
between the two floors, the structural slab was easily shown. (Photo 8). The water shown
in Photo 8 was collected from the saw cut process and not visible beneath the failed section. The process water from the sawing operation and any debris where removed
from the repair area and the slab prepared with another bond break. (Photo 9 & 10).
Subsequently, 5000 psi, High Early, Fiber Reinforced Concrete was replaced within the
repair area with a smooth trowel finish. (Photo 11) The preexisting layer that we built on top of, do we know that layers depth and can we
articulate how it was tied in to the new layer?

The area of repair consists of an existing base slab, structural floor slab and wearing surface. The existing base slab was retained from the original construction to provide
additional reinforcing support to the stability of the overall system. The section below
graphically represents both the repair area as well as the overall floor construction.

EEI Failure Analysis:

The existing floor appears to have received impact damage at or near the intersection of the existing control joints closest to the load over push wall. This was not evident in the remaining
floor control joints. The cause of the initial damage could be attributed to shaking roll off cans
in this area and banging the floor to shake debris loose or impact of the loader bucket within this
area.
It is possible once the damage had been accomplished that during the any freeze events that the
floor could have heaved within this area. However, this is highly unlikely as it would require
significant long periods of freezing to accomplish this event and freeze below the 6+ inch slab.
As with most pavement failures, once a separated joint is observed, the failed section will
Burnt Poplar TS Repair Summary EEI Project Number: 5344 Page 2 May 10, 2018

continue to grow with continued traffic cycles. Since this repair area is subject to what would be in excess of several hundred traffic cycles during a normal operating day, the more likely
analysis is impact damage accompanied by the impact loading from the daily operations.

Wearing of the upper sacrificial floor is within the design limits of a typical transfer station
design and operation. While this floor appears to have some impact damage the design and construction of the sacrificial floor allows for intermediate repairs with limited interruption to
the service of the public. The upper floor is designed with the same characteristics of a pavement
system such that repeated traffic patterns will produce non-uniform wearing throughout the
service life of the system. Low volume sites may experience sacrificial life expectancies of 7 to
10 years while high volume small sites may experience accelerated life cycles. Routine maintenance of the floor is expected including the floor weeps located along the existing push
wall.

If you have any questions or require additional information, please feel free to call at your
convenience.
Sincerely,

EAGLE ENGINEERING, INC.

Frank L. Gray, III, P.E. Principal

Attachments: Photos

Burnt Poplar TS Repair Summary EEI Project Number: 5344
Page 3 May 8, 2018

Photo 1 : Failed Section

Photo 2 : Failed Section
Burnt Poplar TS Repair Summary EEI Project Number: 5344
Page 4 May 8, 2018

Photo 3: Typ Measurement at Failed Section

Photo 4: 6” at Back Right Corner of Repair Area (Closest to Push Wall)

Burnt Poplar TS Repair Summary EEI Project Number: 5344
Page 5 May 8, 2018

Photo 5 : 6.75” at Front Right Corner of Repair Area (Closest to Apron)

Photo 6 : 6.5” at Front Left Corner of Repair Area (Closest to Apron)
Burnt Poplar TS Repair Summary EEI Project Number: 5344
Page 6 May 8, 2018

Photo 7 : 6.5” at Rear Left Corner of Repair Area (Closest to Push Wall)

Photo 8 : Exposed Structural Slab, Typ
Burnt Poplar TS Repair Summary EEI Project Number: 5344
Page 7 May 8, 2018

Photo 9 : Exposed Structural Slab, Typ

Photo 10 : Bond Break Installed, Partial, Typ
Burnt Poplar TS Repair Summary EEI Project Number: 5344
Page 8 May 8, 2018

Photo 11 : Finished Surface, Typ
1
Patrone, John
From:Chao, Ming-tai
Sent:Friday, May 11, 2018 4:27 PM
To:Patrone, John
Subject:Re: [External] RE: WI Burnt Poplar TS 41-22 Insp. Report (05/07/18)
Follow Up Flag:Follow up
Flag Status:Flagged
Hi John: 

I have no comment on the report.  It is good to know that WI recognizes that originally submitted drawing is 
incorrect and we can have peace mind of the new slbe being constructed over the existing one, not just 
wearing surface alone. 

Ming  

From: Seth Heath <[e-mail]> 
Sent: Friday, May 11, 2018 3:45 PM 
To: Patrone, John 
Cc: Catherine Hernandez; Watkins, Jason; Aja, Deborah; Chao, Ming‐tai 
Subject: [External] RE: WI Burnt Poplar TS 41‐22 Insp. Report (05/07/18)  

CAUTION: External email. Do not click links or open attachments unless verified. Send all suspicious email as an attachment to 
Report Spam. 

John, 

Please see the attached report from our engineering firm addressing your comments in the most
recent inspection report for WI’s Burnt Poplar Transfer Station. In regard items 12-16 in your
report, Waste Industries is currently working with CEI to address those needs. CEI has been made
aware of the comments in the report and Waste Industries will continue to monitor and manage
these items to ensure continued compliance. Thank you and please let me know if you have any
questions.  

Best Regards,   

Seth Heath 
General Manager 336-870-4171