7607_GreatOakMSWLF_Comment_AppC_CQARpt_DIN27052_20161128

1
Chao, Ming-tai
From:Chao, Ming-tai
Sent:Monday, November 28, 2016 10:27 AM
To:'Lamb, Steve'
Cc:Murray, John E
Subject:Comments on the CQA Rpt, Great Oak MSWLF, Phases 1 Cell A, 76-07
Hi Steve:

I hope you have a wonderful Thanksgiving Holiday. The Solid Waste Section completed a review of the
Appendix C-4, Primary & Tertiary liners installation/testing logs, few comments are stated below:
1. Samples DXP-6 and DXP-9 are shown on the drawing but not in the Geomembrane Seam Logs. Please
clarify.

2. The Geomembrane Repair Log does not contain the location of Defect Code 11R in the Geomembrane
Defect Log. This defect location is likely not tested by vacuum test, either according to the
Geomembrane Repair Vacuum Test Log. Please clarify.

3. Pane T-28 shall be seamed to secondary liner at two locations but one seam location was not
documented/available in the Geomembrane Seam Log; and the section was not vacuum tested, either
according to the Geomembrane Repair Vacuum Test Log. Please provide the data.
Please respond the comment in the final CQA report. Thanks.

Ming Chao
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

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