7305-INDUS-2012_FAR-FY2022-23_Capacity Report

Good afternoon, Geof - Please find below the capacity information for Mayo Monofill Phase 1.

Status Source
Open Date 7/10/2014 Added Initial Permit to Operate
Survey Date 4/18/2023 Correct Annual Facility Report
Years Open 9 Added Calculated
Fiscal Year Tons Tons 667,644.0 Correct Annual Facility Report
Total Tons Disposed to Date Tons 1,602,288.0 Correct Annual Facility Report
Average Tons per Year Tons 178,032.0 Added Calculated
Volume Used Cubic yards 1,149,245.0 Correct Annual Facility Report
Volume Constructed Cubic yards 2,227,886.0 Corrected Duke Representative
Total Permitted Volume Cubic yards 12,010,584.0 Corrected July 31, 2019 Permit (Estimated gross capacity, page 10)
Compaction Density Tons/Cubic yards 1.4 (Total Tons) / (Volume Used)
Remaining Volume for Future Construction Cubic yards 1,078,641.0 (Volume Constructed) - (Volume Used)
Remaining Permitted Volume Cubic yards 10,861,339.0 (Volume Overall) - (Volume Used)
Approximate Constructed Remaining in Tons Tons 1,503,851.3 (Volume Constructed Remaining) x (Compaction Density)
Approximate Constructed Remaining in Years Years 8.4 (Volume Constructed Remaining in Tons) / (Average Tons)
Remaining Constructed in Fiscal Year Tons 2.25 (Volume Constructed Remaining in Tons) / (Fiscal Year Tons)
Approximate Total Permitted Volume Remaining in Tons 15,142,979.2 (Volume Overall Remaining) x (Compaction Density)
Approximate Total Permitted Volume Remaining in Years 85.1 (Volume Overall Remaining in Tons) / (Average Tons)
Approximate Total Tonnage Remaining in Fiscal Year Tons 22.7 (Volume Overall Remaining in Tons) / (Fiscal Year Tons)

________________________________

From: Martin, Melonie Y <[e-mail]>
Sent: Monday, September 25, 2023 12:57
To: Yitbarek, Diana <[e-mail]>
Subject: RE: [EXTERNAL] Mayo _7305_Capacity Report

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tab.

Hi Deana!

The Mayo Monofill Phase 1 volume is 2,227,886 cubic yards (gross capacity). Please let me know if you need any additional information.

Respectfully,

Melonie Martin

Duke Energy | EHS | Groundwater & Waste Programs

From: Yitbarek, Diana <[e-mail]>
Sent: Friday, September 22, 2023 5:09 PM
To: Martin, Melonie Y <[e-mail]>
Subject: [EXTERNAL] Mayo _7305_Capacity Report

*** CAUTION! EXTERNAL SENDER *** STOP. ASSESS. VERIFY!! Were you expecting this email? Are grammar and spelling correct? Does the content make sense? Can you verify the sender? If suspicious
report it, then do not click links, open attachments or enter your ID or password.

Hi Melonie, Hope you are well.

I need your support with the table below. Mainly with the volume constructed. Would you mind providing the Volume Constructed, cubic yards? I would appreciate it if you could get back
to me sometime next week. Thank you and have a good weekend!

Source

Open Date

7/10/2014

Initial Permit to Operate

Survey Date

4/18/2023

Annual Facility Report

Years Open

9

Calculated

Fiscal Year Tons

Tons

667,644.0

Annual Facility Report

Total Tons Disposed to Date

Tons

1,602,288.0

Annual Facility Report

Average Tons per Year

Tons

178,032.0

Calculated

Volume Used

Cubic yards

1,149,245.0

Annual Facility Report

Volume Constructed

Cubic yards

1,592,000.0

?

Total Permitted Volume

Cubic yards

12,010,584.0

July 31, 2019, Permit (Estimated gross capacity, page 10)

Compaction Density

Tons/Cubic yards

1.4

(Total Tons) / (Volume Used)

Remaining Volume for Future Construction

Cubic yards

442,755.0

(Volume Constructed) - (Volume Used)

Remaining Permitted Volume

Cubic yards

10,861,339.0

(Volume Overall) - (Volume Used)

Approximate Constructed Remaining in Tons

Tons

617,293.1

(Volume Constructed Remaining) x (Compaction Density)

Approximate Constructed Remaining in Years

Years

3.5

(Volume Constructed Remaining in Tons) / (Average Tons)

Remaining Constructed in Fiscal Year Tons

0.92

(Volume Constructed Remaining in Tons) / (Fiscal Year Tons)

Approximate Total Permitted Volume Remaining in Tons

15,142,979.2

(Volume Overall Remaining) x (Compaction Density)

Approximate Total Permitted Volume Remaining in Years

85.1

(Volume Overall Remaining in Tons) / (Average Tons)

Approximate Total Tonnage Remaining in Fiscal Year Tons

22.7

(Volume Overall Remaining in Tons) / (Fiscal Year Tons)

________________________________

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