3901_GranvilleCo_OxfordLinedMSWLF_comment_LOSApp_DIN28702_20171221

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Chao, Ming-tai
From:Chao, Ming-tai
Sent:Thursday, December 21, 2017 2:24 PM
To:Jason Falls <[e-mail]> ([e-mail])
Cc:Amy Davis ([e-mail]); Whaley, Mary; Hammonds, Andrew;
Caldwell, Ethan; Aufman, Shannon E
Subject:Comments on the Permit Application, 3901-MSWLF-2012, DIN 28702
Hi Jason:

The Solid Waste Section (SWS) completed a review of the life-of-site (LOS) permit application (DIN 28693)
for Oxford Subtitle D MSWLF, 3901-MSWLF-2012. Below are some comments on the application, please
properly respond the comments by sending the SWS the revised permit application (one electronic copy and one
hard copy).

Facility Plan
1. (Section 2.1, FP-01) Please add the landfill gas monitoring locations and surface water monitoring
points for the MSWLF - Unit 2, Phase 1 to the Facility Plan Drawing FP-01.

2. (Section 2.3, FP-05) The flow direction for the leachate system at the MSWLF - Unit 2, Phase 1 shall be
based on the as-built drawing in the CQA Report (DIN 18422). Please make necessary corrections on
FP-05.

3. (Section 3.1 and the Operations Plan) If the County plans to use the Convenience Center as a permanent
collection site to receive, collect, and store household hazardous waste (HHW), the Operations Plan
must have a section to detail the management of HHW at this area including waste acceptance and
screening, handling and managing the collected HHW at this area, temporary storage requirements, final
disposal and treatment facilities. The on-site personnel training and contingency plans should be also
included in the Operations Plan. Additionally, the facility must obtain an Identification Number from the
Solid Waste Section by completing the attached application form which can also be downloaded from
the following web link:
https://deq.nc.gov/about/divisions/waste-management/hhw

4. (Section 4.0) Please provide the following info to this section:
i. The descriptions of the status of the on-site solar project such as the date of construction
completion, the date of initial operation, the project duration, the operator’s contact information,
the responsibilities of the County and the solar operator etc.

ii. As-built of the solar project site such as solar panel layout, security devices, invertors, power
connections, surface drainage system, on-site infrastructures, etc.

iii. According to the approved plan (DIN 25258) and the conditional approve letter (DIN 25136) for
the solar project, the County should provide the following items in the revised Post-Closure Plan:
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a. Land use of the solar project site after the project is decommissioned.
b. Descriptions of the approaches to dispose of wastes associated with the solar project and
of the responsible party (s) to determine and conduct the project decommission.
c. Revised post-closure cost estimates including the costs of decommissioning the solar
project.

5. (FP-06) Drawing FP-06 must show the current fill grades of the MSWLF – Unit 2, Phase 1.

Operations Plan
6. (Section 5.1.4) The ADC-Tarp info placed in Appendix 3 should be referenced in this
section. Additionally, per NCGS 130A-295.6(h1), the landfill can use an ADC that have previously
been approved to use at any sanitary landfill in the State of North Carolina. If the County intends to
apply any ADC in the approved list, please add a paragraph to this section. The approved ADC and the
application method can be found in the web link:
http://edocs.deq.nc.gov/WasteManagement/0/edoc/723214/ApprovedACM_Rev1_GDE_20170721.pdf?
searchid=f7d5b34c-664b-4338-930a-d1db93f0272f

7. (Sections 6.1 & 6.2) The narratives of both sections may have to revised according to request from the
SWS Hydrogeologist stated in December 18, 2017 e-mail message - “Even if nothing is changed in the
WQMP and LFGMP, the County needs to submit both of those plans with new cover pages with the
current date and new PG seals with the current dates.”

8. (Section 9.1) Per NCGS 130A 295.6(h)(3), the leachate collection and removal (LCR) piping shall be
cleaned and inspected by a remote camera at least once every five years. The LCR inspection and
cleaning record must be placed in the operating record. Please add the requirements to the Section.

9. (Appendix 6) The service agreement expired on January 25, 2012. The Operation Plan should discuss if
the agreement is required in the future landfill operations to execute a management plan reducing
wildlife attraction and the potential for aircraft/human safety hazard.

10. (OP-03) Should the Phasing Plan drawings be revised according the present in-place waste volume, the
remaining Phase 1 capacity, and the revised annual disposal rate?

As mentioned in the previous e-mail message, the SWS intends to issue a LOS permit for the landfill facility
including both active lined MSWLF and the closure permit for the CDLF on top of the closed unlined
MSWLF. Please inform the SWS of the pre-construction meeting date/time (prefer two weeks prior to the
scheduled meeting date) for the closure construction activities at the C&DLF unit. Thank you for your
corporation on the matters.

I wish you and your family have a Merry Christmas and a Happy New Year.

Ming Chao
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Ming-Tai Chao, P.E.
Environmental Engineer
Permitting Branch, Solid Waste Section
NCDEQ, Division of Waste Management
(Mailing Address)
1646 Mail Service Center
Raleigh, NC 27699-1646

(Street Address)
Green Square, 217 West Jones Street
Raleigh, NC 27603
Tel. [phone]
[e-mail]
http://portal.ncdenr.org/web/wm/sw

E-mail correspondence to and from this address may be subject to the North Carolina Public Records Law and may be disclosed to third parties.