20190288 Ver 1_Monitoring Report_20201012

Strickland, Bev
From: Daniel Davis <[e-mail]>
Sent: Monday, October 12, 2020 11:48 AM
To: Homewood, Sue
Cc: Bob Pudney; Benjie Thomas ([e-mail]); Buckeye Water Plant
Subject: [External] Town of Beech Mtn. 401 Certification No. 1756 Quarterly Report
Attachments: Annual Lake Discharge Report 2020.xlsx; Dam Gate Inspection 2020 Defiant Marine
Report.pdf
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Sue,
I have attached the data for the last three quarters of 2020 reporting on the discharge flow rates for Buckeye Lake. The
discharge report continues to outline our troubles with a maximum annual discharge of 173 CFS in April down to 0.28 in
July and September this year. There are dashed marks on the report which indicate lower than ability to record
flow. The lowest flow rate recorded on the chart is the 0.28 CFS so the result is less than that.
Throughout all of the low flow periods we were able to maintain flow across our spillway, albeit a small
amount. Because of this we have yet to exceed any of the trigger levels set forth in the permit. This is in large part due
to the fact that we continue to operate the water treatment facility under the low flow volumes described in the
previous quarterly report.
During this 3rd quarter, Defiant Marine conducted an inspection survey of the gate, working, concrete, and overall
condition. Report attached. All apparatus are in good working order.
We currently have two well sites that are contracted to be drilled for test wells. As of today, the drilling rig is on site and
we expect to have wells completed for data analysis by end of week. The contractual substantial completion date for
both included well sites is October 20t", with testing and analysis to follow. We are still in high hopes that a volume of
water will be found that is usable to our system.
We have had an exceptional rainfall year and yet we continue to experience difficulty in meeting the permit discharge
limits. We continue to seek and develop source water sources and reduce system leaks from both main line and service
line replacement programs.
Thank you,
Daniel Davis
Public Utilities Director
510 Beech Mountain Pkwy.
Beech Mtn, NC, 28604
BMUS(@TownofBeechMountain.com
Office 828-387-9282

,AABEMH
MOUNTAIN
N O R T H C A R O L I N A
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Pursuant to North Carolina General Statutes, Chapter 132, Public Records, this e-mail and any attachments, as
well as any e-mail messages(s) that may be sent in response to it, may be considered public records and
therefore are subject to public records requests for review and copying.

Daily Mean Discharge, cubic feet per second
DATE
Jan
2020
Feb
2020
Mar
2020
Apr
2020
May
2020
Jun
2020
Jul
2020
Aug
2020
1
3.86P
6.73P
10.3P
8.81P
51.1P
4.30P
17.4P
4.86P
2
4.04P
6.16P
9.78P
7.57P
33.3P
3.79P
12.1P
3.93P
3
7.02P
6.43P
21.OP
6.63P
22.6P
3.19P
8.28P
36.6P
4
9.69P
7.80P
22.8P
6.04P
16.6P
2.75P
5.84P
30.8P
5
11.2P
14.5P
19.6P
5.54P
12.9P
2.63P
6.20P
17.2P
6
10.8P
145P e
15.1P
5.06P
12.5P
2.36P
3.98P
10.5P
7
10.6P
118P
11.6P
5.19P
10.8P
1.84P
3.40P
7.68P
8
8.61P
55.7P
9.34P
5.10P
10.5P
1.55P
3.22P
5.65P
9
7.27P
33.5P
7.57P
21.7P
10.7P
1.36P
2.44P
4.07P
10
6.96P
25.3P
6.85P
15.6P
9.16P
1.68P
1.90P
3.19P
11
20.2P
36.2P
6.49P
12.8P
8.41P
1.54P
1.63P
2.96P
12
52.2P
42.OP
5.35P
15.7P
7.00P
1.04P
1.16P
4.10P
13
35.5P
74.1P
8.84P
173P e
6.32P
0.84P
-
2.91P
14
27.6P
55.9P
7.13P
55.6P
5.45P
4.17P
0.28P
14.1P
15
21.7P
34.7P
7.33P
31.3P
4.71P
3.19P
18.6P
16
20.6P
22.3P
6.79P
19.8P
4.22P
2.74P
17.OP
17
16.9P
15.4P
7.42P
13.8P
3.70P
4.69P
11.6P
18
15.OP
11.9P
7.04P
17.4P
4.00P
5.15P
8.26P
19
13.2P
10.1P
7.17P
12.6P
38.7P
5.16P
5.89P
20
9.92P
8.38P
11.8P
18.OP
80.7P
5.60P
8.11P
4.71P
21
8.19P
6.83P
19.OP
15.9P
90.8P
5.00P
3.03P
4.11P
22
6.95P
6.03P
16.5P
13.6P
53.6P
4.22P
4.26P
3.94P
23
6.25P
5.91P
18.8P
12.9P
33.3P
4.10P
16.9P
2.94P
24
11.6P
7.80P
21.3P
14.1P
21.6P
3.46P
30.2P
2.24P
25
11.2P
15.7P
48.9P
13.3P
21.4P
6.10P
24.5P
2.16P
26
10.4P
16.9P
38.8P
15.3P
17.8P
3.49P
20.3P
1.65F
27
10.5P
17.9P
25.3P
16.6P
13.4P
3.28P
13.2P
1.58F
28
9.21P
15.1P
17.8P
15.OP
9.98P
25.4P
8.59P
1.34F
29
8.19P
12.4P
12.7P
30.1P
8.44P
23.1P
5.86P
1.97F
30
7.56P
9.37P
85.4P
7.14P
21.OP
5.60P
1.55F
31
7.27P
8.59P
5.38P
5.32P
COUN
T
31
29
31
30
31
30
25
31
MAX
52.2
145
48.9
173
90.8
25.4
30.2
36.6
MIN
3.86
5.91
5.35
5.06
3.7
0.84
0.28
1.34

Sep
2020
2.19P
1.85P
1.15P
0.99P
0.71P
1.53P
1.68P
0.95P
0.75P
5.83P
4.43P
3.55P
3.11P
2.63P
2.07P
1.90P
2.10P
6.68P
3.40P
2.54P
2.30P
4.48P
4.18P
23
6.68
0.71

DEFIANT MARINE, INC.
PROJECT:
BUCKEYE LAKE ACTUATOR ANNUAL INSPECTION
OCTOBER 29th - NOVEMBER 1 st 2020
CLIENT:
TOWN OF BEECH MOUNTAIN
/V% BEECH
MOUNTAIN
NORTH CAROLINA
Callan A. ".. HI(MIr T ..
CONTRACTOR:
DEFIANT MARINE INC.

TABLE OF CONTENTS:
SECTION:
INSPECTION SUMMARY
SILT/SEDIMENT ILLUSTRATION

I I

INSPECTION SUMMARY
Defiant Marine has been tasked with providing an annual inspection report following the installation and
upgrade of the Buckeye Lake Reservoir Emergency Drain Gate Actuator Assembly in Beech Mountain North
Carolina. Construction of the assembly was completed in May of 2019.
On Wednesday September 30th 2020 initial dive inspections took place to evaluate the "as is" conditions of the
operator shaft, guides, diffuser box and frame assembly. This inspection was primarily made to evaluate silt
(or other substrate) accumulation which would of naturally occurred between conclusion of the installation
(May 2019) and the time of inspection (Sep/Oct 2020). Additionally the team was looking for any gross
abnormalities or anomalies, none were found. Silt/Sediment readings ranged from 1/4" to 3" on the stem,
guides, and frame assembly (see included illustrations for reference). Silt/Sediment accumulation around the
Gate and Diffuser Box perimeter ranged from 12"-18".
Upon completion of the "as is" inspection the diver then utilized a low pressure water jet to clean the top of
assembly of any fine organic materials (silt/sediment). This was done to fully expose the components and
provide further detailed inspection of the components. Due to the turbidity that is created in the water column
during "jetting", operations were concluded for the day to allow visibility to improve.
On Thursday October 1st 2020 Divers conducted a thorough video inspection of the Gate components including:
actuator stem, guides, frame, anodes, diffuser box, gate, and all associated hardware. Working from the shore to
the gate the diver systematically inspected the the previously listed components. All hardware was identified
and "tightness" was checked with wrenches, none had loosened. The concrete footing had no identifiable
damage (cracking etc.). The lattice frame assembly displayed no signs of change, no anomalies or deformation
was present. Witness marks had been placed between the lattice frame head section ("Ba2") and the first
common section ("Ba1") at the lap joint interface during the initial installation. The diver identified the witness
marks and confirmed that no change had occurred, indicating no shifting or movement of the assembly had
occurred. All bracelet anodes placed on the actuator stem were in like new condition and exhibited no indication
that electrolysis was occurring in the water column. Completing the inspection of the frame and guide assembly
the diver focused his attention on the diffuser box and the stem to gate interface. All hardware on the diffuser
box mounting flange was present and tight. The diffuser box exhibited no signs of damage or deformation. The
top grated section was free of any debris. On the interior of the diffuser box light sediment/silt deposits were
found at the bottom of the gate measuring approx. 12" +/- in depth and covering the bottom 12"+/- of the gate.
No gravel or substrate larger that 3/8" was present inside of the diffuser box assembly. Lastly the diver inspected
the actuator stem to thrust nut interface where the stem mates to the gate. The thrust nut was found in "as -built"
condition and firmly secured to the bottom of the actuator stem. No damage/deformations/anomalies present.
*A PRINTED COPY OF THIS REPORT AS WELL AS THE DIVE VIDEO INSPECTION WILL BE PROVIDED.
END OF REPORT

II

SILT/SEDIMENT ILLUSTRATION
24"-36" OF I
SILT/SEDIMI
OUTSIDE DII
*ASSEMBLY GRAP
FOR STRUCTURE R
ONLY, NOTAN INC
"AS BUILT"
SHORELINE
.25" TO 3" OF FINE
SILT/SEDIMENT
THROUGHOUT.
12" +/- OF FINE
SILT/SEDIMENT AT
BOTTOM OF GATE.