Panama City Office 7500 McElvey Road, Suite A Panama City Beach, FL 32408 Tel: (850) 769-4773 Fax: (850) 872-9967 www.soearth.com FL Certificate of Authorization #3737 MOBILE · MONTGOMERY · SUMMERDALE · DESTIN · PANAMA CITY · TALLAHASSEE · BATON ROUGE · MANDEVILLE · NEW ORLEANS Geotechnical, Environmental & Construction Materials Testing Baskerville-Donovan, Inc. September 19, 2016 449 W Main Street File No.: P16-0796 Pensacola, FL 32502 Attention: Mr. Dave Hemphill Subject: Sediment Sampling and for the Proposed Dredging at Lake Huntington in Panama City, Florida Dear Mr. Hemphill: Southern Earth Sciences, Inc., has completed the geotechnical services for the Lake Huntington dredging project in Panama City, Florida. Our services were performed per your request. This report presents the results of our field and laboratory testing. FIELD INVESTIGATIVE PROCEDURES: On September 12, 2016, sediment samples were obtained by using a continuous PVC macro-core liner, driven by hand into the bottom. The samples were obtained by our personnel and the samples were delivered in air tight containers to our laboratory where the samples were then opened, classified, and prepared for laboratory testing. The approximate locations are indicated on the attached plan. Our test locations were measured from existing landmarks with a 100-foot tape. Therefore, test locations should be considered approximate. LABORATORY TESTING PROCEDURES In the laboratory, the bottom samples were extracted for visual classification and assignment of laboratory tests. Soil samples were visually classified in the laboratory in accordance with the Unified Soil Classification System. Laboratory tests were assigned based upon the visual classification of the soils. Laboratory classification testing included grain size analyses. Grain Size Analyses: Four (4) samples were selected to determine their grain size distribution in accordance with ASTM D-6913-04(2009). The laboratory test results are shown on the boring logs at the depth of the tested sample. Grain size distribution curves are included in the Appendix. SITE AND SOIL CONDITIONS: The dredging will take place north and south of the 15 th Street bridge crossing Lake Huntington. Test locations were performed north (N-1) and south (S-1) of the bridge. Based upon the provided topographic information, the elevations range from 0 to -4 Feet on the south
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P a n a m a C i t y O f f i c e
7500 McElvey Road, Suite A Panama City Beach, FL 32408
MOBILE · MONTGOMERY · SUMMERDALE · DESTIN · PANAMA CITY · TALLAHASSEE · BATON ROUGE · MANDEVILLE · NEW ORLEANS
Geotechnical, Environmental & Construction Materials Testing
Baskerville-Donovan, Inc. September 19, 2016 449 W Main Street File No.: P16-0796 Pensacola, FL 32502 Attention: Mr. Dave Hemphill Subject: Sediment Sampling and for the Proposed Dredging at Lake Huntington in Panama
City, Florida Dear Mr. Hemphill: Southern Earth Sciences, Inc., has completed the geotechnical services for the Lake Huntington dredging project in Panama City, Florida. Our services were performed per your request. This report presents the results of our field and laboratory testing. FIELD INVESTIGATIVE PROCEDURES: On September 12, 2016, sediment samples were obtained by using a continuous PVC macro-core liner, driven by hand into the bottom. The samples were obtained by our personnel and the samples were delivered in air tight containers to our laboratory where the samples were then opened, classified, and prepared for laboratory testing. The approximate locations are indicated on the attached plan. Our test locations were measured from existing landmarks with a 100-foot tape. Therefore, test locations should be considered approximate. LABORATORY TESTING PROCEDURES In the laboratory, the bottom samples were extracted for visual classification and assignment of laboratory tests. Soil samples were visually classified in the laboratory in accordance with the Unified Soil Classification System. Laboratory tests were assigned based upon the visual classification of the soils. Laboratory classification testing included grain size analyses. Grain Size Analyses: Four (4) samples were selected to determine their grain size distribution in accordance with ASTM D-6913-04(2009). The laboratory test results are shown on the boring logs at the depth of the tested sample. Grain size distribution curves are included in the Appendix. SITE AND SOIL CONDITIONS: The dredging will take place north and south of the 15th Street bridge crossing Lake Huntington. Test locations were performed north (N-1) and south (S-1) of the bridge. Based upon the provided topographic information, the elevations range from 0 to -4 Feet on the south
side and 0 to -6 Feet on the north side. The provide plans also indicate the proposed dredge elevation is -3.5 Feet. At both test locations the sediment soils encountered were sands. The sands vary in color and texture and were generally clean sands. Trace amounts of organic matter were found at test location S-1 (South). The samples were obtained on September 12, 2016 around Low Tide, according to NOAA online publications. Low Tide for this date is +0.5 Ft. The samples were obtained in approximately 1.0 to 1.1 feet of water. GENERAL COMMENTS The soil samples obtained during this geotechnical investigation will be held for a period of thirty (30) days. After this period, the samples will be disposed of unless we are specifically requested, in writing, to do otherwise. A reasonable storage fee will be charged for samples stored for longer periods. While the soil sampling locations performed for this project are representative of subsurface soil conditions at their respective locations and for their respective vertical reaches, local variations of the subsurface materials are anticipated and may be encountered. We appreciate the opportunity to be of service to you on this project. Should additional information be required, please advise. Yours Very Truly, SOUTHERN EARTH SCIENCES, INC.
Logan A. Fowler, E.I. Eng. Reg. No. 1100015527 State of Florida
Michael K. Varner, P.E. Eng. Reg. No. 15037 State of Florida
Baskerville-Donovan, Inc. Lake Huntington
Page 3
APPENDIX
Test Location Plan,
Boring Logs, &
Grain Size Distribution Curves
1
4
SP
SP
Water
Light Gray Fine SAND
Brown and Gray Fine SAND withTrace Organics
0.0
-0.5
-1.0
-1.5
-2.0
-2.5
-3.0
-3.5
-4.0
-4.5
-5.0
0.0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
4.5
5.0
LL
N Value(blows/ft)
20 40 60 80
Page 1 of 1LOG OF BORING S-1 (South)Lake Huntington Sediment Sampling
Panama City, Florida
P16-0796
08/12/16
SPT Shelby Tube
Notes:- Sampled During Low Tide (+0.5)- Tidal Information Obtained from NOAA Online Publications
PROJECT:
LOCATION:
PROJECT NO.:
DATE:
METHOD:
DRILLER:
ENGR / GEOL:
SURFACE ELEVATION:
Hand Push
LF
LF
+0 ft
Per Plan
Water Level
NA
TU
RA
L M
OIS
TU
RE
(%)
PA
SS
ING
#20
0 S
IEV
E(%
)Soil SymbolsSampler Symbols
and Field Test Data
Water Observations: Sample Was Obtained Approximately1.0 Ft Below the Surface of the Water
Elevation /Depth
PL PI
ATTERBERGLIMITS (%)
LIQ
UID
LIM
IT
PLA
ST
IC L
IMIT
PLA
ST
ICIT
YIN
DE
X
MATERIAL DESCRIPTION
LOCATION
USCS
N - SPT Data (Blows/Ft) P - Pocket Penetrometer (tsf)