9231_BrownfieldRdCDLF_Capacity_DIN26522_20160713

July 13, 2016

Ms. Pat Backus, P.E.
Permitting Engineer
NC DEQ, Division of Waste Management
1646 Mail Service Center
Raleigh, NC 27699-1646

RE: Brownfield Road C&D Landfill – Phase 2B (SWS Permit No. 92-31)
Landfill Gross Capacity Clarification
Raleigh, North Carolina

Dear Ms. Backus:

As you noted in an email dated June 10, 2016 to Don Misenheimer (attached), different
volumes have been reported for the above referenced facility over the past 6 years. These
variations have not been due to major changes in the landfill design, but due to the methods
and assumptions used for calculations. The purpose of this letter is to present an accurate
account of the gross disposal volume at the facility.
The below revised landfill volume, reported in Table 1 and shown on Figures 1-8 (attached),
are intended to replace all previously reported information (i.e., volume, area, and site life).

Table 1: Total Operating Capacity and Life Expectancy
Phase Area1
(Acres)
Gross Capacity2
(CY)
Net Capacity3
(CY)
Life Expectancy4
(Years)
15 19.2 1,636,000 1,599,539 --
2A (Cell 1)5 4.9 336,000 329,869 --
2A (Cell 2) 4.4 645,000 636,631 1.1
2A (Stage 2) 7.7 495,200 490,771 2.1
2B 8.9 1,710,600 1,687,715 7.3
2C6 - 1,380,900 1,313,833 5.7
Northern Area2 45.1 6,283,400 6,065,348 18
Southern Area 24.2 2,223,100 2,145,049 9.2
TOTAL 69.3 8,426,800 8,203,407 25.3
Notes:
1. Area for Phases 1-2C is attached in Figure 7 and verifies total acreage of Northern Area.
2. Gross Capacity is measured from the bottom of waste to the top of the final cover. Gross capacity
is rounded to the nearest hundred to reflect the accuracy of capacity calculations.
3. Net Capacity excludes final cover soils.
4. Life expectancy for Phase 2A (Cell 2) unit is for Phases 1, 2A (Cell 1), and 2A (Cell 2) from 1/2/16.
Life expectancies are based on a disposal rate of 115,000 tons/year and the calculated density. The
density (i.e. 0.50 tons/cubic yard) used to calculate the life expectancy is based on the measured
gate tonnage and the surveyed volume of landfill airspace consumed. The surveyed volume
includes periodic cover soil. The surveys were performed approximately annually, from 2/23/12 to
1/2/16.
DocuSign Envelope ID: F54D0135-C214-4CCF-923B-AD1B64A4F645
Ms. Backus
July 13, 2016
Page 2 of 2
5. Gross capacity for Phases 1 and 2A (Cell 1) is carried over from the October 9, 2014 Permit to
Construct application. Phase 2A (Cell 1) was calculated by deducting the previously stated capacities
from the total capacity (Figure 1) of Phases 1, 2A-Cell 1, and 2A-Cell 2.
6. Phase 2C is a vertical expansion above Phases 1-2B.
7. The Northern Area represents Phases 1 & 2.

Capacity variations have resulted from a variety of factors which are summarized below:
1. Net capacity (subgrade to top of intermediate cover) had previously been incorrectly
reported as gross capacity for the facility. Net capacity does not include final cover
soils.
2. Phase volumes have been re-distributed to better accommodate landfill operations.
Updated waste filling models allow for equipment to operate the top of each phase.
3. Due to encounters with rock in Phase 2A-Stage 2 to subgrade in this area was raised,
thus landfill volume reduced by 26,100 CY. A CQA report for construction of Phase
2A-Stage 2 will be submitted to NC DEQ.
4. Capacities were calculated assuming a 2-foot final cover thickness, which has been
proposed as an alternate final cover system with the Phase 2B Permit to Construct
Application.
5. Subgrade and final cover grades are fine-tuned each year to verify contours are
cohesive. In some cases minor adjustments are made to re-align contours so that
they are continuous, accurate, and constructible.

Sincerely,
SMITH GARDNER, INC.

John R. Fearrington, E.I. Stacey A. Smith, P.E.
Staff Engineer (ext. 125) Senior Engineer (ext. 127)
[e-mail] [e-mail]

Attachments: Figures 1 through 7, Brownfield Road Capacity Spreadsheet, June 10th Email

cc: David Pepper, Waste Industries USA, Inc.

H:\Projects\Brownfield Road\BROWNFIELD-15-1(Permit Renewal 2015)\correspondence\Capacity Clarification\Brownfield Capacity Clarification.docx
DocuSign Envelope ID: F54D0135-C214-4CCF-923B-AD1B64A4F645
7/13/2016
7/13/2016
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SMITH GARDNER, INC.CAPACITY Brownfield Corrected
ADDRESS TEL WEB
PROJECT SHEET 1 OF 8 DATE
COMPUTED BY
SUBJECT JOB #CHECKED BY
OBJECTIVE:
ANALYSIS:
REFERENCES:WCA Material Recover, LLC, C&D Landfill (Phases 1 and 2A), Permit to Construct Application, June 2008
(revised through December 2010), David Garrett and Associates.
14 N. Boylan Avenue, Raleigh, NC 27603 919.828.0577 www.smithgardnerinc.com
Brownfield CDLF - Phase 2B PTC 7/11/2016
JRF
Capacity Evaluation (Density & Life)BROWNFIELD-15-1
To determine the capacity of landfill units. Also, to estimate the expected life of the landfill unit(s) given
the proposed contours and the anticipated waste loading rate(s). As part of the evaluation, an evaluation
or estimate of waste density will be required based on the known or assumed percentage of periodic cover
soil.
The volume(s) will be calculated by using AutoCAD. Alternatively, the volume(s) will be calculated by
taking cross sections of the landfill, using a planimeter to measure the area of the cross sections, and
using the average end area method.
DocuSign Envelope ID: F54D0135-C214-4CCF-923B-AD1B64A4F645
SMITH GARDNER, INC.Phase 1 CAPACITY Brownfield Corrected
PROJECT SHEET
JOB #
SUBJECT DATE
COMPUTED BY
CHECKED BY
Waste & Periodic Cover Parameters:
Waste Density (TCY) =0.50
Waste Density (PCY) =1,000
Note:The waste density is derived from gate tonnage records and annual survey results between 2/23/12 and 1/2/16. The
surveyed volumes include waste and periodic cover soil.
Volume Calculations:
Volume From 2010 PTC (CY) =1,636,000 (Top Subgrade to Top of Final Cover)
Net (Waste) Capacity (Tons) =799,769
Life Expectancy Calculations:
Gross Capacity (Top of Subgrade to Top of Final Cover):
Adjustment For Other Layers (Add to Above):
Area of Waste Footprint (Acres) =11.3
1 feet Compacted Soil Cap (CY) =18,231
1 feet Vegetative Soil Layer (CY) =18,231
Sum (CY) =36,461
Net Capacity (CY) =1,599,539
Brownfield CDLF - Phase 2B PTC 2/8
BROWNFIELD-15-1
Capacity Evaluation - Phase 1 7/11/2016
JRF
DocuSign Envelope ID: F54D0135-C214-4CCF-923B-AD1B64A4F645
SMITH GARDNER, INC.Phase 2A (Cell 1)CAPACITY Brownfield Corrected
PROJECT SHEET
JOB #
SUBJECT DATE
COMPUTED BY
CHECKED BY
Waste & Periodic Cover Parameters:
Waste Density (TCY) =0.50
Waste Density (PCY) =1,000
Note:The waste density is derived from gate tonnage records and annual survey results between 2/23/12 and 1/2/16. The
surveyed volumes include waste and periodic cover soil.
Volume Calculations:
Volume From 2010 PTC (CY) =336,000 (Top Subgrade to Top of Final Cover)
Net (Waste) Capacity (Tons) =164,935
Life Expectancy Calculations:
Net Capacity (Top of Subgrade to Top of Final Cover):
Adjustment For Other Layers (Add to Above):
Area of Waste Footprint (Acres) =1.9
1 feet Compacted Soil Cap (CY) =3,065
1 feet Vegetative Soil Layer (CY) =3,065
Sum (CY) =6,131
Net Capacity (CY) =329,869
Brownfield CDLF - Phase 2B PTC 3/8
BROWNFIELD-15-1
Capacity Evaluation - Phase 2A-Cell 1 7/11/2016
JRF
DocuSign Envelope ID: F54D0135-C214-4CCF-923B-AD1B64A4F645
SMITH GARDNER, INC.Phase 2A (Cell 2)CAPACITY Brownfield Corrected
PROJECT SHEET
JOB #
SUBJECT DATE
COMPUTED BY
CHECKED BY
Waste & Periodic Cover Parameters:
Waste Density (TCY) =0.50
Waste Density (PCY) =1,000
Note:The waste density is derived from gate tonnage records and annual survey results between 2/23/12 and 1/2/16. The
surveyed volumes include waste and periodic cover soil.
Volume Calculations:
Volume From AutoCAD (CY) =636,631 (Top Subgrade to Top of Intermediate Cover)
Net (Waste) Capacity (Tons) =318,316
Life Expectancy Calculations:
Annual Tonnage:115,000 ton/year
Daily tonnage:225 tons/day (based on 5 operating days per week)
Remaining Life:2.8 years
Gross Capacity (Top of Subgrade to Top of Final Cover):
Adjustment For Other Layers (Add to Above):
Area of Waste Footprint (Acres) =2.6
1 feet Compacted Soil Cap (CY) =4,195
1 feet Vegetative Soil Layer (CY) =4,195
Sum (CY) =8,389
Gross Capacity (CY) =645,000
Brownfield CDLF - Phase 2B PTC 4/8
BROWNFIELD-15-1
Capacity Evaluation - Phase 2A-Cell 2 7/11/2016
JRF
DocuSign Envelope ID: F54D0135-C214-4CCF-923B-AD1B64A4F645
SMITH GARDNER, INC.Phase 2A Stage 2 CAPACITY Brownfield Corrected
PROJECT SHEET
JOB #
SUBJECT DATE
COMPUTED BY
CHECKED BY
Waste & Periodic Cover Parameters:
Waste Density (TCY) =0.50
Waste Density (PCY) =1,000
Note:The waste density is derived from gate tonnage records and annual survey results between 2/23/12 and 1/2/16. The
surveyed volumes include waste and periodic cover soil.
Volume Calculations:
Volume From AutoCAD (CY) =490,771 (Top Subgrade to Top of Intermediate Cover)
Net (Waste) Capacity (Tons) =245,386
Life Expectancy Calculations:
Annual Tonnage:115,000 ton/year
Daily tonnage:225 tons/day (based on 5 operating days per week)
Remaining Life:2.1 years
Gross Capacity (Top of Subgrade to Top of Final Cover):
Adjustment For Other Layers (Add to Above):
Area of Waste Footprint (Acres) =1.4
1 feet Compacted Soil Cap (CY) =2,259
1 feet Vegetative Soil Layer (CY) =2,259
Sum (CY) =4,517
Gross Capacity (CY) =495,200
Brownfield CDLF - Phase 2B PTC 5/8
BROWNFIELD-15-1
Capacity Evaluation - Phase 2A Stage 2 7/11/2016
JRF
DocuSign Envelope ID: F54D0135-C214-4CCF-923B-AD1B64A4F645
SMITH GARDNER, INC.Phase 2B CAPACITY Brownfield Corrected
PROJECT SHEET
JOB #
SUBJECT DATE
COMPUTED BY
CHECKED BY
Waste & Periodic Cover Parameters:
Waste Density (TCY) =0.50
Waste Density (PCY) =1,000
Note:The waste density is derived from gate tonnage records and annual survey results between 2/23/12 and 1/2/16. The
surveyed volumes include waste and periodic cover soil; therefore, the density accounts for the periodic cover soil.
Volume Calculations:
Volume From AutoCAD (CY) =1,687,715 (Top of Subgrade to Top of Intermediate Cover)
Net (Waste) Capacity (Tons) =843,858
Life Expectancy Calculations:
Annual Tonnage:115,000 ton/year
Daily tonnage:225 tons/day (based on 5 operating days per week)
Remaining Life:7.3 years
Gross Capacity (Top of Subgrade to Top of Final Cover):
Adjustment For Other Layers (Add to Above):
Area of Waste Footprint (Acres) =7.1
1 feet Compacted Soil Cap (CY) =11,455
1 feet Vegetative Soil Layer (CY) =11,455
Sum (CY) =22,909
Gross Capacity (CY) =1,710,600
Brownfield CDLF - Phase 2B PTC 6/8
BROWNFIELD-15-1
Capacity Evaluation - Phase 2B 7/11/2016
JRF
DocuSign Envelope ID: F54D0135-C214-4CCF-923B-AD1B64A4F645
SMITH GARDNER, INC.Phase 2C CAPACITY Brownfield Corrected
PROJECT SHEET
JOB #
SUBJECT DATE
COMPUTED BY
CHECKED BY
Waste & Periodic Cover Parameters:
Waste Density (TCY) =0.50
Waste Density (PCY) =1,000
Note:The waste density is derived from gate tonnage records and annual survey results between 2/23/12 and 1/2/16. The
surveyed volumes include waste and periodic cover soil; therefore, the density accounts for the periodic cover soil.
Volume Calculations:
Volume From AutoCAD (CY) =1,313,833 (Top of Subgrade to Top of Intermediate Cover)
Net (Waste) Capacity (Tons) =656,917
Life Expectancy Calculations:
Annual Tonnage:115,000 ton/year
Daily tonnage:225 tons/day (based on 5 operating days per week)
Remaining Life:5.7 years
Gross Capacity (Top of Subgrade to Top of Final Cover):
Adjustment For Other Layers (Add to Above):
Area of Waste Footprint (Acres) =20.8
1 feet Compacted Soil Cap (CY) =33,557
1 feet Vegetative Soil Layer (CY) =33,557
Sum (CY) =67,115
Gross Capacity (CY) =1,380,900
Brownfield CDLF - Phase 2B PTC 7/8
BROWNFIELD-15-1
Capacity Evaluation - Phase 2C 7/11/2016
JRF
DocuSign Envelope ID: F54D0135-C214-4CCF-923B-AD1B64A4F645
SMITH GARDNER, INC.Southern CAPACITY Brownfield Corrected
PROJECT SHEET
JOB #
SUBJECT DATE
COMPUTED BY
CHECKED BY
Waste & Periodic Cover Parameters:
Waste Density (TCY) =0.50
Waste Density (PCY) =1,000
Note:The waste density is derived from gate tonnage records and annual survey results between 2/23/12 and 1/2/16. The
surveyed volumes include waste and periodic cover soil; therefore, the density accounts for the periodic cover soil.
Volume Calculations:
Volume From AutoCAD (CY) =2,223,134 (Top of Subgrade to Top of Final Cover, i.e., Gross Capacity)
Calculated Net Cacpacity (CY) =2,145,049 (Deduct for final cover)
Net (Waste) Capacity (Tons) =1,072,524
Life Expectancy Calculations:
Annual Tonnage:115,000 ton/year
Daily tonnage:225 tons/day (based on 5 operating days per week)
Remaining Life:9.3 years
Gross Capacity (Top of Subgrade to Top of Final Cover):
Adjustment For Other Layers (Add to Above):
Area of Waste Footprint (Acres) =24.2
1 feet Compacted Soil Cap (CY) =39,043
1 feet Vegetative Soil Layer (CY) =39,043
Sum (CY) =78,085
Gross Capacity (CY) =2,223,100
Brownfield CDLF - Phase 2B PTC 8/8
BROWNFIELD-15-1
Capacity Evaluation - Southern Disposal Area 7/11/2016
JRF
DocuSign Envelope ID: F54D0135-C214-4CCF-923B-AD1B64A4F645
7/12/2016 Smith Gardner, Inc Mail ­ Fwd: Permit No. 92­31 Brownfield Road C&D Landfill
https://mail.google.com/mail/u/0/?ui=2&ik=eedee46f09&view=pt&search=inbox&th=155e04866865ef16&siml=155e04866865ef16 1/4
John Fearrington <[e-mail]>
Fwd: Permit No. 92­31 Brownfield Road C&D Landfill 
1 message
Misenheimer <[e-mail]>Tue, Jul 12, 2016 at 2:04 PM
To: John Fearrington <[e-mail]>
From: "Backus, Pat" <[e-mail]> 
Date: June 10, 2016 at 1:17:28 PM EDT
To: Don Misenheimer <[e-mail]> 
Subject: RE: Permit No. 92­31 Brownfield Road C&D Landfill
Two more comments … just to make sure.

‐          The last line in the table says “Total (lined)” .    This isn’t a lined landfill.
‐          The total acres and gross capacity differed.  Previous total acreage was 69.2 and this es㐃㌃mate is 63.4.  Previous
total gross capacity was 8,234,522 versus current 6,434,698 cubic yards.  Do you think the previous es㐃㌃mate was in
error or is the reduc㐃㌃on due to a change in the design?  If you were going the opposite way, it would be considered  a
significant change which might kick in other requirements.   Just asking so we don’t cause a problem down the road
by lowering the capacity.

If the January 2016 is the only change, I wouldn’t worry about correcting.  

Just let me know what you think about the capacity calculation.

I think that is all I need to finish the permit.

Thanks,
Pat

Patricia M. (Pat) Backus, P.E.
Environmental Engineer
Division of Waste Management – Solid Waste Section
North Carolina Department of Environmental Quality

(919) 707­8257 office
[e-mail]
DocuSign Envelope ID: F54D0135-C214-4CCF-923B-AD1B64A4F645
7/12/2016 Smith Gardner, Inc Mail ­ Fwd: Permit No. 92­31 Brownfield Road C&D Landfill
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Office Location:    217 West Jones Street
Mail & Delivery:    1646 Mail Service Center
                            Raleigh, NC  27699­1646

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From: Don Misenheimer [mailto:[e-mail]] 
Sent: Friday, June 10, 2016 12:33 PM 
To: Backus, Pat <[e-mail]>; Donald Plessinger (Waste Industries) <donald.plessinger@
wasteindustries.com>
Cc: [e-mail]
Subject: RE: Permit No. 92­31 Brownfield Road C&D Landfill

Pat:

You are correct. The nomenclature has changed slightly in that Phase 2C has become Phase 3.  Table 1
on Page vii of the Executive Summary is correct, although a note added to the table stating that Phase 3
will be vertical fill over Phases 1, 2A and 2B would have provided some clarification on this matter.

Currently, all of Phase 2A (including Cell 1, Cell2 and Stage 2) have been constructed.  Stage 2
construction was begun this year and is complete except for final CQA documentation submittal. 
Please note that page iii of the executive summary stated that “Phase 2A – Stage 2 …. with construction
estimated to being in January 2015.”  This was a typo and should have read  ….with construction
estimated to being in January 2016.

Please let me know if this clears things up for you, or if you need further documentation on this matter
(revised pages etc.)

Thank you­

DocuSign Envelope ID: F54D0135-C214-4CCF-923B-AD1B64A4F645
7/12/2016 Smith Gardner, Inc Mail ­ Fwd: Permit No. 92­31 Brownfield Road C&D Landfill
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Don M. Misenheimer
Project Scientist
SMITH + GARDNER
14 N. Boylan Avenue 
Raleigh, NC 27603
P [phone] 
C [phone]
www.smithgardnerinc.com

From: Backus, Pat [mailto:[e-mail]]  
Sent: Friday, June 10, 2016 11:17 AM
To: Don Misenheimer ([e-mail]); Donald Plessinger (Waste Industries)
Subject: Permit No. 92­31 Brownfield Road C&D Landfill

Don and Don,

I am trying to finish the permit and need to check with you.  I think the nomenclature for the phases may
have changed over the years which is confusing me  (cells, stages, A, B,C, 1,2,3, etc.).

Phase 1 had Cells A, B, and C and they are all constructed.

Phase 2 has Phase 2A with a Cell 1, 2, and Stage 2 and a Phase 2B.  (The 2014 permit listed a Phase 2C
which was a vertical expansion, but it isn’t on the last application.  See table on page viii.)  Cells 1 and 2
have been constructed.   (CQA in 2014 was for 2A, Cell 2) Stage 2 was approved for construction
previously.  The executive summary of the application (page iii) stated that “Phase 2A – Stage 2 …. with
construction estimated to being in January 2015.”  But it hasn’t be built, has it?    The application just
reviewed was for a PTC for Phase 2B.  Could you clear this up for me?

(See capacity tables in attached documents.)

Thanks,
Pat

Patricia M. (Pat) Backus, P.E.
Environmental Engineer
Division of Waste Management – Solid Waste Section
North Carolina Department of Environmental Quality

DocuSign Envelope ID: F54D0135-C214-4CCF-923B-AD1B64A4F645
7/12/2016 Smith Gardner, Inc Mail ­ Fwd: Permit No. 92­31 Brownfield Road C&D Landfill
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(919) 707­8257 office
[e-mail]

Office Location:    217 West Jones Street
Mail & Delivery:    1646 Mail Service Center
                            Raleigh, NC  27699­1646

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