HomeMy WebLinkAboutSW8051219_COMPLIANCE_20051216STORMWATER DIVISION CODING SHEET
POST -CONSTRUCTION PERMITS
PERMIT NO.
SW
DOC TYPE
❑ CURRENT PERMIT
❑ APPROVED PLANS
❑ HISTORICAL FILE
COMPLIANCE EVALUATION INSPECTION
DOC DATE
YYYYMMDD
Q O R E
P R O P E R T Y 5 C! E N C E S
December 16, 2005
Kelly Properties, Inc.
1076 W. Fourth Street, Suite 200
Winston-Salem, NC 27101
Attention: Mr. Michael Kelly
Subject: Infiltration Test Results
Proposed Walgreens Store
Morehead City, North Carolina
Job No. R2106; Report No. 122584
Dear Mr..Kelly,
Pursuant to the request of Mr. Don Gibbs of Greenhorne and O'Mara, a representative of QORE
was at the subject project site on December 2, 2005 to perform a double -ring infiltration test on the
in -situ soils. The test was performed at a depth of about two feet below the existing grade at the
location shown on the attached Test Location Plan. A hand auger boring was completed next to the
infiltration test location to explore the subsurface soil and groundwater conditions. The Nand Auger
Boring Record and the results of the infiltration test are attached.
In summary, the subsurface soils consisted of slightly silty Sand that extended to the 4-foot depth
explored. Groundwater was measured at a depth of about 3.8 feet below the ground surface at
completion. The test location was pre-soaked with a 10-gallon quantity of water and then 4
infiltration test trials were run. Based on the results of these tests, the infiltration rate of the in -situ
soils was assessed to be about 30 to 35 inches per hour. Due to the rapid infiltration of water, the
standard constant head test method per ASTM D-3385 was modified and performed as a failing
head test; where as the elapsed time was recorded for 2000 ml of water to infiltrate the ground
within the inner -ring and on this basis, the infiltration rate was calculated.
We appreciate the opportunity to be of continued services to you. Should questions arise, please
contact us at your convenience.
Respectfully submitted,
QORE, Inc.
Thomas B. Baird, P.E. David T. Cunningham, P.E.
Project Geotechnical Engineer Senior Geotechnical Engineer
Wlatt.
2s21 Schieffelin Road. Suice 128 Aper., North Carolina 27502 (9{9) 363-9899 fax (919) 363-7916
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LEGEND
Infiltration Test Location
INFILTRATION TEST LOCATION PLAN
JOB NO.
R-2106
FIGURE NO.
1 OF 1
DRAWN BY
CHECKED BY
Proposed Walgreens Store
US Highway 70
CDC
TBB
QY
O R E
Morehead Cit , North Carolina
SCALE
NTs
DATE
1 zlazla5
SOURCE: Partial Scan of Preliminary Site Plan
PROPERTY SC IENCES
Prepared by: Greenhorne & O'Mara, Inc., Dated: 091141D5
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MOREHEADCITY, NORTH CARal,lNAr>,k'��;R
DATA
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th, ft.
Penetrometer
Boring
Description
Depth,
n,
No.
From
To
ft.
bpi
HA-1
0
0.2
Topsoil — Dark brown to.black silty Sand, trace organics
0.2
0.5
Grey slightly silty Sand (SP)
0.5
1.3
Black slightly silty Sand (SP)
1.3
4
Light grey slightly silty Sand (SP)
Boring. terminated at 4 feet:
Groundwater at 3.8 feet upon completion,
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TECHNICIAN: Michael Blagg