7407_Pitt_CandDLandfillInc_20180706_LFGWellInstallation_FID1279664

Drummond, Jaclynne
From: Garrett, David <[e-mail]>
Sent: Monday, June 05, 2017 7:18 PM
To: Drummond, Jaclynne
Cc: Wayne Bell
Subject: C&D Landfill Status Update
Attachments: 2017 C&D Landfill Assessment Plan LFG MON 6-5-2017.pdf, Table 1 from C&D Landfill Gas
Monitoring 6-5-2017 notes.pdf, Table 1 from C&D Landfill Gas Monitoring 6-5-2017.pdf
The drilling is scheduled to commence next Wed, 6-14-2017. One monitoring well will be installed, in addition to 7
prepacked soil -gas probes and 5 soil -gas flux chambers. The reason for the flux chambers is shallow ground water (less
than 5 feet), where the conventional soil -gas probes cannot be installed correctly. Our contracted driller/consultant,
Larry Opper, PG with Regional Probing, Inc., tells me these shallow devices are accepted by the NCDEQ and have been
deployed at landfills in this state.
Please refer to the attached map and table indicating where the various appliances will be installed. If you have any
questions or comments concerning the upcoming work, please contact me at your earliest convenience. The ground
water sampling was completed by Environment-1 before the end of May, as scheduled. I will keep informed of any
developments. Thank you.
G. David Garrett, P.G., P.E.
Senior Engineer
Amec Foster Wheeler Environment & Infrastructure, Inc.
4021 Stirrup Creek Drive — Suite 100
Durham, North Carolina 27703
david.earrett(@amecfw.com
Phone: [phone]
Direct line: 919-765-0070
Cell: 919-418-43 75
This message is the property of Amec Foster Wheeler plc and/or its subsidiaries and/or affiliates and is intended only for the named
recipient(s). Its contents (including any attachments) may be confidential, legally privileged or otherwise protected from disclosure by
law. Unauthorised use, copying, distribution or disclosure of any of it may be unlawful and is strictly prohibited. We assume no
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Drummond, Jaclynne
From: Garrett, David <[e-mail]>
Sent: Thursday, July 06, 2017 10:59 AM
To: Drummond, Jaclynne
Cc: Wayne Bell; Steve Jones
Subject: C&D Landfill, Inc Assessment Monitoring Activities Update
Good morning. We have completed the landfill gas sampling using the newly installed monitoring devices and a GEM
5000 gas meter. We received the analytical data for the site -wide Appendix II monitoring last week. I intend to have
this information compiled by the middle of next week, with a report following shortly thereafter. I want to incorporate
these data into the forthcoming Assessment of Corrective Action before the end of July. I will prepare a schedule for
upcoming sampling in that timeframe. Please contact me if you have any questions.
G. David Garrett, P.G., P.E.
Senior Engineer
Amec Foster Wheeler Environment & Infrastructure, Inc.
4021 Stirrup Creek Drive — Suite 100
Durham, North Carolina 27703
[e-mail]
Phone: [phone]
Direct line: 919-765-0070
Cell: 919-418-43 75
This message is the property of Amec Foster Wheeler plc and/or its subsidiaries and/or affiliates and is intended only for the named
recipient(s). Its contents (including any attachments) may be confidential, legally privileged or otherwise protected from disclosure by
law. Unauthorised use, copying, distribution or disclosure of any of it may be unlawful and is strictly prohibited. We assume no
responsibility to persons other than the intended named recipient(s) and do not accept liability for any errors or omissions which are a
result of email transmission. If you have received this message in error, please notify us immediately by reply email to the sender and
confirm that the original message and any attachments and copies have been destroyed and deleted from your system. If you do not
wish to receive future unsolicited commercial electronic messages from us, please forward this email to: unsubscribe@amecfw.
com and include "Unsubscribe" in the subject line. If applicable, you will continue to receive invoices, project communications and
similar factual, non-commercial electronic communications.
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France.

Notes:
1 Bar -Hole Punch tests scheduled for the next sampling event at all existing locations; this method
is an approved sampling procedure at this site; future use of this method is to be determined.
2 Flux Chambers are large diameter vessels (i.e., an inverted 5-gal PVC pail) buried as deep as
practical, open -bottom, rim sealed with bentonite, and fitted with a stop cock, for gas sampling
where the water table is shallower that 5 feet, which precludes the installation of a soil gas probe
to NCDEQ standards.
3 Soil -Gas Probes are dedicated 1-inch diameter screens with a pre -installed sand pack and
bentonite seal, set at a depth of interest (i.e., vadose zone just above the water table), installed
via direct -push technology. A 1-inch diameter PVC riser extends to the surface, which is equipped
with a stopcock and a protective steel cover.
Plans are to perform punch tests with facility's current QRAE gas meter side -by -side flux chamber and soil -
gas probes using GEM5000 meter where indicated.
Future LFG sampling program amendments are contingent on the findings of the next round of testing and
ground water sampling.
Flux Chambers — 5
Soil -Gas Probes — 7

Table 1
C&D LANDFILL, INC., LANDFILL GAS SAMPLING
Revised June 5, 2017
LFG
Sample
Location
Sampling
Device
Nearest
Monitor
Well
Ground
Elev. at
Well
High
Water
Elev.
Depth
of High
Water
Comments
GP-1
Bar -hole punch'
MW-9A
20.58
15.46
5.12
2
GP-2
Bar -hole punch
MW-17
15.25
11.89
3.36
3
GP-3
Bar -hole punch
MW-16
14.33
8.53
5.80
4
GP-4
Bar -hole punch
MW-15
14.65
9.32
5.33
5
GP-5
Bar -hole punch
MW-14s
16.60
12.70
3.90
6
SG-6/GP-6
Flux Chamber'
MW-12s
16.18
12.03
4.15
Too shallow for soil -gas probe
SG-7/GP-7
Flux Chamber
MW-5
17.90
13.47
4.43
Too shallow for soil -gas probe
SG-7/GP-8
Soil -Gas Probe3
MW-2s
21.44
12.14
9.30
Install new soil -gas probe
GP-9
Bar -hole punch
MW-4
18.42
12.59
5.83
10
GP-10
Bar -hole punch
MW-1s
17.59
15.71
1.88
11
GP-11
Bar -hole punch
MW-10
16.61
14.05
2.56
12
SG-12 New
Soil -Gas Probe
MW-13
20.69
12.45
8.24
13
SG-13 New
Flux Chamber
MW-12s
16.18
12.03
4.15
Too shallow for soil -gas probe
SG-14 New
Flux Chamber
MW-11
14.49
12.06
2.43
Too shallow for soil -gas probe
SG-15 New
Soil -Gas Probe
MW-8
21.21
12.80
8.41
16
SG-16 New
Soil -Gas Probe
MW-3s
23.02
12.21
10.81
17
SG-17 New
Soil -Gas Probe
MW-3s
23.02
12.21
10.81
18
SGA8 New
Soil -Gas Probe
MW-3A
21.93
11.81
10.12
19
SG-19 New
Soil -Gas Probe
MW-2s
21.44
12.14
9.30
20
SG-20 New
Flux Chamber
MW-10
16.61
14.05
2.56
Too shallow for soil -gas probe

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