7607_GreatOakMSWLF_CQARPT_Cell3A_Comment_FID1323294_20190627

From:Chao, Ming-tai
To:Harrison, Susan
Cc:McFeeley, Michael; Lamb, Steve; Glenn, Albert; Jarrod Timmons ([e-mail]); Stanley, Sherri;
Kirchner, Chuck
Subject:Re: [External] Great Oak Landfill - Cell 3A Western Edge
Date:Thursday, June 27, 2019 12:46:55 PM
Attachments:pastedImage.pngpastedImage.png
Susan: 
Regarding the earthen berm dividing the Cell 3 into Cell 3A & Cell 3B, the Solid Waste
Section (SWS) has no comment on the dimensions of the temporary division berm butstrongly stress that WM must ensure the cell separation done properly at this time and, at a
minimum, achieve the following requirements which will be incorporated into the permitapproval to operate for Cell 3A.
 i.         Storm water and leachate separation per Rules 15A NCAC 13B. 1619(a)(4) &
.0162(e).
1. The berm should be constructed a low permeability key into the subgrade and coupling
with sump(s) & pump (s) timely and adequately remove any retained water in the future
Cell 3B. WM must have a designated & competent staff to inspect the Cell 3B
immediately after each rainfall/ storm event and to operate the pump (s) to safely
removal of retained water from Cell 3B.  The inspection record and action (s) after each
rainfall event must be a portion of the operating record.
2. Any storm water contained inside the Cell 3B will be considered as NOT leachate and
can be pumped out of the cell and discharged into nearby drainage features (the energy
dissipator at the end of discharge point may be required per the NC Erosion and
Sediment Rules); only if the retained water/liquid does NOT encounter any waste.
3. The existing LCR & LDS piping and geosynthetic liners at Cell 3A should be properly
terminated inside the proposed berm but ready for future connection to the piping inside
Cell 3B.  The record of piping & geosynthetic liner termination should be a portion
of the final CQA Report for Cell 3A.  Please DO NOT repeat the previously incident
that liquid intruded into LDS layer at Cell 1A while constructing Cell 1B. The use of
addition roll of HDPE liner mentioned in your e-mail is acceptable.  But the SWS would
 request to extrude wield this additional HDPE to both secondary & primary HDPE
liners to form an encapsulation/isolation the LDS inside Cell 3A.  If the berm fails, all
storm-water from Cell 3B will be drained by LCR in Cell 3A.
4. Rain flap/cover may be used for preventing any soil erosion at the earthen berm.
5. Provide as-built drawing of the berm and details of liner & piping connections (typical
cross-sections).
ii.                   If the berm stays after Cell 3B is completely constructed, the reduction of
gross capacity of Cell 3 should be calculated & reported accordingly. 
The Solid Waste Section completes a review of the completed portions of the draft CQA
Report for Cell 3A which was received on 06/21/2019.  Few comments on the CQA report arestated below:
1.       (Section 1.1 - Background) Cell 2 was approximately 10 acres and constructed in
2018. There is no Cell 2A.  Please correct the typo. 
2.       (Appendix C-1) The data sheet for delivery and the MQA testing result summarysheet show two different lot # - 19A1106 & 19A1107 for the same roll #
GTB0030580004.  Please clarify. 
<!--[if !supportLists]-->3.       <!--[endif]-->(Appendix C-2) The March 25, 2019 CQA
data result of Asperity Height for the HDPE sample (ID GTD0030610025, TRI Lot
# 45181) is 259 mils.  Please recheck the data result.  
<!--[if !supportLists]-->4.       <!--[endif]-->(Section 5.1 & Appendix D-1)
1. Per CQA Table 0519.26-A, testing item for Geocomposite shall include compression
strength test (ASTM D1621), at a frequency one test per 100,000 square feet.  Please
provide descriptions of testing results and number in this section, and the MQC data in
Appendix D-1.
2. Section 5.1 states two (2) transmissivity tests were conducted on for Geocomposite
(Agru- 8-200-8); but three (3) test results are shown on Appendix D-1.   Please clarify.
3. Section 5.1 should describe the testing results and numbers for geotextile portion of
Geocomposite (Agru- 8-200-8) according the data in Appendix D-1.
4. In Appendix D-1, the geotextile roll numbers for Geocomposite (Agru- 8-200-8) are
inconsistent between those in “Geotextile Quality Certification”-InterM Code TEX 08M
and those documented in “Geocomposite” - 8-200-8.  Many Roll #s show
on “Geotextile Quality Certification”-InterM Code TEX 08M & TRI CQA testing
results can not be found in the “Geocomposite” - 8-200-8.  Please clarify.
5. Section 5.1 should describe the test results of resin manufactured geonet in Appendix D-
1. 

<!--[if !supportLists]-->5.       <!--[endif]-->(Section 5.2 & Appendix D-2)
1. Section 5.2 states that six (6) CQA tests were conducted on the components of
Geoposite Agru-8-200-8.  But Appendix D-2 shows that 28 geotextile samples were
tested for mass per unit area, grab strength, and puncture resistance.  And no test result
that was conducted on the test items specified for geonet & geocomposite is available in
Appendix D-2.  Please provide the requested CQA data.
2. Section 5.2 states that six (6) CQA tests were conducted on the components of
Geoposite SKAPS-TN-350-2-8.  But five (5) sample test results are available in
Appendix D-2.  Please clarify.
<!--[if !supportLists]-->6.       <!--[endif]-->(Section 6.0 GCL) The Cell 3A is constructed
to have a 8.48-acre disposal area, approximately 370,000 square feet.  The landfillbase liner system that is a double composite liner system requires two layers of
GCL.  Without considering the overlapping/seaming requirement for panelconnection, the minimum 739,000 square feet of GCL must be shipped to the site. 
The data presented in this section is incomplete.
Please contact me if you have any questions.  Thanks and have a wonderful day.
From: Harrison, Susan <[e-mail]>
Sent: Thursday, June 27, 2019 10:16 AM
To: Chao, Ming-tai
Cc: McFeeley, Michael; Lamb, Steve; Glenn, Albert; Jarrod Timmons ([e-mail])
Subject: [External] Great Oak Landfill - Cell 3A Western Edge

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Good Morning Ming,

As documentation for our phone discussion yesterday, June 26, I offer the following summary:

1. (Temporary) Intercell Berm Detail, 1/19, will be modified for ease of constructability;
primarily the berm will be shortened to 3 ft
a. One HDPE liner roll width (23 ft) will be extrusion welded to the primary liner
parallel to the anchor trench just beyond the end of the LCS geocomposite
b. The HDPE will run flat approximately 6 ft across the liner system, up a 3:1 slope
for a height of 3 ft, across the top of the berm for approximately 3 ft, and back
down (1 ft) on the other side at a 2:1 to the top of the protective layer
c. The inside edge of the HDPE will be secured with additional protective cover
2. The purpose of the temporary berm is to prevent storm water from entering Cell 3A
from the west (3B area). This will be primarily accomplished by the storm water ditch to
be constructed outside the anchor trench along Cell 3B, therefore, the height of this
berm is not as significant
3. The final elevation of the berm will be noted on the as-built survey

Please don’t hesitate to contact me if you have any questions.

Thank you for your assistance in completing this cell,

Susan

Susan Harrison, P.E.
Mgr Engineering, South Atlantic
[e-mail]
Waste Management
1047 Highway Church Road
Elgin, SC 29045
Cell 678-436-2719

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