20060331 Ver 1_Other Documents_20101129

11/29/'2010 15:20 9104988}12 FARLGW OIL CO PAGE 01
BEVERLY EAVES PERDUE
Gov1_RNOR
November 29, 2010
Contract No.:
TIP;
WBS Element:
F.A. No.:
County:
Description:
Subject:
CAL
STATE OF NORTH CAROLINA
DEPARTMENT OF TRANSPORTATION
EUGENE A. CONTI, .1R.
SECkSTARY
0201918
R -26060
34480,3.GV1
NHF- 0311(23)
Randolph
US -311 Bypass (f=uture 1 -74) From North of SR -1928 (Spencer Rd.) to US -220
Results of Sediment Investigation of Wyatt Farlow Lake
Mr. Wyatt C. Farlow
3083 Thompson Heath Road
Sophia, NC 27350
Dear Mr. Farlow:
After heavy storms on May 15, 2010 you contacted NCDOT and NCDENR about turbid water and silt
reaching your lake. We were aware of the silt loss from the project and had notified the proper agencies
and our Roadside Environmental Unit to investigate_ The investigation revealed that recoverable silt did
migrate downstream from the project approximately 800 feet. The silt was removed by hand from the
stream to that paint and the stream was monitored for possible accumulation of silt that could be removed
from the system. Minor amounts of silt were beyond this point, but the deposits were not enough to be
recovered. A logging operation that was upstream may have also contributed to the film of silt.
Very turbid water discolored your lake for several days on some occasions.
On October 25, 2010, the Geotechnical Engineering Unit completed a pond sediment investigation at your
property. Attached are the findings and observations of the investigation_ The sediment samples show
that all locations have less than half an inch of recent sediment thickness. A film of sediment that is not
retrievable did reach your lake.
In conclusion, NCDOT has Investigated the sediment In your lake and conclude that a thin film did reach
your lake. It is improbable that the recent sediments observed in the samples collected from your lake
result from construction activities related to the US -311 Bypass Project, No matter the source of the
sediment In your lake, it is not feasible to remove the thin film of recent sediment. We will continue to
monitor the stream for retrievable deposits from the US -311 Bypass Project until it is stabilized.
MAILING ADDRESS. TELUFHprve: 899426 -1309
RELENT ENGINEER'S QFF4t FAX; 398.9262420
P, 0. BOX 1164
ASHPBORO, NC 27244 WWEwI E, HrrP.' /*co0T. covlDOW
LOCATION.
272 DOT wuvE
ASHgpoRO, NC 27204

11/29/2010 15:20 9104988312 FARLOW OIL CO PAGE 02
BEVERLY EAVES PERDUE
OOVEMC R
A
}
STAu of Nom CAROLINA
DEPARTMENT OF TRANSPORTATION
November 3, 2010
MEMORANDUM TO: Jeff ullin, F.E.
EUGENE A. CONT7, JR.
SECRETARY
esident Engineer
FROM: L. Pilipchuk, L.G_, P.E.
Western Region Geotechnical Manager
STATE PROJECT: 39460 (34d80.3.GiV1)
COUNTY: Randolph
DESC d"ION: US -311 Bypass (future I -74) Front North of SR -1929 (Spencer
Road) to US -220:
SUBJECT: Farlow Pond' Sediment Investigation in Randolph County, NC
On October 25, 2010, the agotechnical Engineering, J Tnit . completed a pond sediment
investigation at property address 3083 Thotnp�on Heath, koaa,. Sqphia, NC for the above
referenced project. This memo presents'our findings and�biervations.
&&MUND INFORMA=
We understand that the owner of the referenced property has claimed that construction activities
related to the project have resulted in sediment deposits within the pond located at the property.
Subsequently, the Gootechnical Engineering Unit was contacted to conduct sediment sampling of
the pond bottom.
In early June, significant rainfall events oecumed in the area of the project that resulted in failure
of the project erosion and sediment control devices on two separate occasions, The devices are
located on the west side of the project roadway grade between the project's crossings of Plainfield
Road and existing US Highway 311. This portion of the project crosses the eastern drainage area
of the pond approximately 10,000 feet upstream of the headwaters of the pond. A western
drainage area also serves the subject pond, but is separated from the project by a ridge,
Just days after failure of the arosion,and "rrtent control devices, representatives of the NCDOT,
the project Contractor, the NCDENR, and the US Army Corps of Engineers evaluated the extent
of the sediment loss from the project by tracing the eastern drainage feature from the project
downstream. During that field inspection, it was determined that the end of the significant
sedimentation (sediment which had to be retrieved and/or cleaned from the feature by hand)
resulting from the project occurred approximately 900 feet downstream in the eastern drainage APMEW;
NC MAILINO W ANiiECiIONAL 1rELQPWNC (M)4"4042 LOCITJON:
OEOTECHWALOWCE FAX! (74 455 -Ml 2 d OTEEN CHNICALOFF) E
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WWBM. W14W -D0 .00T.STA1rE.A0.US KAmimm, NO 2075

11/29/2010 15:20 9104988312 FARLOW OIL CO PAGE 03
Jeff Loflin, P.E.
November 3, 2010
Page 2
feature. The project Contractor subsequently removed the sediment from the feature to the
satisfaction of the NCDOT, the NCDENR, and the US Army Corps of Engineers.
Vieks) '
Our investigation included general field observations of the existing pond conditions and the
collection of eight (8) bottom-of-pond sediment specimens. Representatives of the project
Contractor and the NCDDOT and the property owner determined the sampling locations. The
samples were collected by inserting 2 -inch diameter clear PVC pipe into the pond bottom to
retrieve a plug of pond sediment. The PVC pipe was capped at each end to preserve the samples.
CPS coordinates of each test location were collected during sampling. Specimens' were returned
to our office for further evaluation.
At our office, each of the sediment samples was visually evaluated to determine distinct breaks in
sediment layers based upon apparent grain size and/or color. In this instance, color was the major
differentiating factor between what was determined to be recent (orange - brown) and historic
(gray - black) sediment in the samples. Only minor differences, if any, in grain size could be
visually discemed between recent and historic sediment. The non- primary (recent) sediment
thickness at each sample location is shown in the table below and on the attached plan view.
Sample Location
on -P wary Seftg
ThIsMIll es
1
0.25
2
0.40
3
0.30
4
0.30
5
0.15
6-
0.00
7
0.00
8
0.00
In general, sedimentation from a single -point source such as the subject project generally occurs
quickly for the larger grain sizes in the sediment. However, the smaller silt gains in the sediment
remain suspended in the water for greater distances downstream. Given the facts that
insignificant sediments existed beyond 900 feet downstream of the project as determined by the
environmental agencies and that the subject pond is located an additional 9,000 feet downstream
from the end of significant project sedimentation, it is highly unlikely that the non- pritnary
(recent) sediments observed in the samples collected from the subject pond result from
construction activities related to the project.
Please call John L. Pilipchuk, L.G., P.E. or Dean Hardister, P.E. at [phone] if there are any
questions concerning this memorandum.
JLP/DH
Attachment

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Page 2
1 -4407
November 29, 2010
If you have any questions concerning this matter or if this office can be of further assistance please
advise-
Sincerely,
J E
Resident Engineer
Attachment
cc, Mr. Tim Johnson, PE ec: Ms. Vickie Davis, PE
Mr, Ron Hancock., PE
Mr, Dwayne Lambert
Mr. Mason Hemdon, NCDENR
Mr. Lewis Cuthrell
File

11+'29/2010 15:20 9104988312 FARLOW OIL CO PACE 05
NORTH CAROLINA DEPARTMENT OF
ENVIRONMENT & NATURAL RESOURCES
Mason Herndon C�,°" _ . .... _..
Environmental Senior SpacW st
Division of Water Quality
Fayetteville Region &I Office .
A225 Green Street,SUite 714
t Fayetteville, NC 28301 -5043
4DMr \� Phone: 91U- 433.3324 Fax' 810 -486 -0707
n Email• mason,herndonQncdenr.gov