SW7080320_COMPLIANCE_20100111

STORM
C ER DIVISION CODING SHEET
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CONSTRUCTION PERMITS
PERMIT NO.
SW
DOC TYPE
❑ CURRENT
PERMIT
❑ APPROVED
PLANS
❑ HISTORICAL
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COMPLIANCE EVALUATION INSPECTION
DOC DATE
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YYYYMMDD

_ _S_O_IL, HYDROGEOLOGIC, & WETLAND CONSULTING
___
Inc. ---- 700 Arendell St. Suite 14, Morehead City, NC 28557 voice/fae:[phone]
March 18, 2008
Mr. William C. Stillwagon
Rial Corporation
319 South Maple Avenue
Greensburg, PA 15601
Subject: Shallow Subsurface Characterization for an Erosion Control Plan at the
Innsbrook Golf & Marina Clubhouse Site
Bertie County, North Carolina
Cpec Job #1506
Dear Mr. Stillwagon,
One copy of the subject report is attached. Should you have any questions or comments on the
report, please contact us at your convenience.
Sincerely,
Thomas H. Hinson, PG, LSS
Chief Environmental Consultant
Attachment: Report

Innsbrook GC - Clubhouse Site, Benie County, NC
Job 0 1506, March 2008
1.0 Introduction
1.1 Site location and general description.................................................................................1
1.2 Project description..............................................................................................................1
2.0 Site Characterization.................................................................................................................1
2.1 Soils..................................................................................................................................1
2.2.1 Soil profile descriptions............................................................................................I
2.2.2 Seasonal high water table estimates..........................................................................1
2.2 Static water table measurements........................................................................................1
2.3 Saturated hydraulic conductivity estimates........................................................................2
3.0 Limits of Investigation..............................................................................................................2
4.0 References.................................................................................................................................3
List of Tables
Table 1 a.
Deep boring description of SWP I -I ...........................................................................
T I
Table I b.
Deep boring description of SWP 1-2...........................................................................
T2
Table lc.
Deep boring description of SWP I-3...........................................................................T3
Table Id.
Deep boring description of SWP I-4...........................................................................T4
Table le.
Deep boring description of SWP2-1 . ..........................................................................T5
Table I f.
Deep boring description of SWP2-2...........................................................................
T6
Table I g.
Deep boring description of SWP2-3...........................................................................
T7
Table I h.
Deep boring description of SWP24 ...........................................................................
T8
Table 2.
Temporary well construction details and analysis data..............................................T9
Table 3.
Most restrictive horizon Ksat estimates...................................................................
TI O
List of Figures
Figure 1. Location of the Innsbrook Golf and Marina Clubhouse Site, Bertie County, North
Carolina..................................................................................................................... FI
Figure 2. Location of proposed stormwater BMPs................................................................... F2
Figure 3. Data -collection points............................................................................................... F3
List of Appendices
Appendix A - Field Procedures
Appendix B - Data Analysis Worksheets
Cpec

Innsbruck GC - Clubhouse Site, Bertie County, NC
Job # 1506, March 2008
1.0 INTRODUCTION
Cpec Environmental, Inc. (Cpec) was contracted by Hobbs, Upchurch and Associates, P.A.
(HUA) to perform a Shallow Subsurface Characterization for an Erosion Control Plan at the
Innsbrook Golf and Marina Community in Bertie County, North Carolina. Cpec prepared this
report with information collected from on -site surface and subsurface investigations, survey
maps, aerial photographs, technical publications, geological maps, and county, state, and federal
records. Appendix A contains Cpec's field procedures and methods.
1.1 Site location and general description
The site is located east of NC Highway 45, near the community of Merry Hill, in Bertie County,
North Carolina (Figure 1).
1.2 Project description
The Rial Corporation proposes to construct a clubhouse and fitness center for the Innsbrook Golf
and Marina Community. Two (2) main stormwater BMPs are proposed (Figure 2).
2.0 SITE CHARACTERIZATION
2.1 Soils
2.1.1 Soil profile descriptions
Four (4) deep soil borings were performed at each stormwater BMP location (total — 8)(Figure
3). Deep boring descriptions for soil profiles are presented on Tables I a through I h. Soil
horizon boundaries and other significant subsurface boundaries were assigned to a common
datum plane (i.e., msl) to aid the reviewer. Overall, the Bt-horizons were consistently the most
hydraulically restrictive.
21.2 Seasonal high water table estimates
Due to the aggressive site alteration (i.e, cutting and tilling for go] f course construction), the
groundwater system has undergone significant modification. Specifically, the extensive network
of golf -course irrigation ponds has disrupted the natural groundwater -Flow regimes across the
site. The effect has been to significantly lower the water table and stabilize water table
Fluctuation at the site. As a result, conventional methods for estimating seasonal high water
tables (i.e., soil morphological indicators) could not be employed. Qualitative seasonal high
water table estimates are presented later (Section 2.2).
2.2 Static water table measurements and maximum water table estimates
To quantitatively measure static water table elevations and estimate seasonal high water tables,
Cpec installed 'temporary' piezometers (1.25-in diameter) at each deep boring location (Figure
3). HUA performed top of casing (TOC) horizontal and vertical registrations at each well.
Cpec

Innsbrook GC - Clubhouse Site, Bettie County, NC
Job # 1506, March 2008
Appendix A contains the well installation methods. Table 2 provides 'temporary' well
construction details and other significant data. Cpec measured static water table depths at each
well on 03/12/08. The mean water table elevation was 9.47 ft-msl (Table 2).
It is our assertion that, during any given year, the maximum water table height beneath the
proposed BMPs will be controlled by the static water -level elevation in the golf -course irrigation
ponds. During our site evaluation, we noticed that the irrigation ponds were below the'normal'
water levels. The'normal' level was evidenced by the clear development of littoral shelves
around the perimeter of all the ponds. In two nearby ponds (Figure 2), Cpec used the base of the
littoral shelf as a benchmark elevation for a'normal' water elevation. The difference between the
'normal' and 'low' elevation was 2.0 ft (10.03 minus 8.03 ft-msl).
Cpec understands that the 'non mal' water level is not absolute and is dependent on natural (e.g.,
rainfall and evaporation) and man-made factors (e.g., weir settings, water -consumption demands,
etc.). However, without the benefit of seasonal high water tables estimates via soil
morphological indicators, Cpec can only make a reasonable, educated guess of the maximum
water table height beneath the proposed stonnwater BMPs. Therefore, we estimate the'high'
water elevation in the ponds at 4.0 ft above the 'low' elevation (2X the difference from the
'normal' and the'low' elevation). Following the spirit of this reasoning, we estimate the mean
'maximum' water table elevation at 13.47 ft-msl (9.47 ft-msl + 4.0 ft = 13.47 ft-msl).
2.3 Saturated hydraulic conductivity estimates
Based on the shallow stratigraphy from soil profile descriptions, Cpec targeted the Bt-horizon
and BC -horizon for permeability estimates in the most -restrictive zones. Using compact
constant -head permeameters, Cpec performed five (5) in -situ saturated hydraulic conductivity
(K,,,,,) tests at each BMP location (Figure 2). Field -data analysis worksheets are presented in
Appendix B and Appendix A provides methods and calculations. Table 3 presents in -situ
measurement results. Cpec calculated the geometric mean Ks,t from a data population of the 10
measured Ks;,, values at 0.03 in/hr. (0.48 gpd/ft2). Furthermore, the mean elevation of the Bt-
horizon (most hydraulically restrictive horizon) was 16.55 ft-msl and 17.63 ft-msl at BMP-1
and BMP-2, respectively.
3.0 LIMITS OF INVESTIGATION
Data presented in this report represent isolated data points. Conclusions of this report, including
maps and calculations, are based on extrapolations between data points and on subjective
hydrogeologic, soils, and geologic interpretation. Therefore, Cpec's conclusions may not be
completely representative of all conditions in the study area. Our assessment is based on the best
available data and current understanding of project objectives and design plans. The calculations
in this analysis are necessarily conservative; however, additional conservative safeguards should
be incorporated in the final design.
Significant soil/site modification at site, either through filling or excavation, may alter existing
soil/site conditions and therefore invalidate our conclusions and recommendations and require a
site re -assessment.
Cpec

Innsbrook GC - Clubhouse Site, Bertie County, NC
Job tt 1506, March 2008
4.0 REFERENCES
United States Department of Agriculture, Natural Resources Conservation Service. 1996.
National Soil Survey Handbook, Title 430-VI
Cpec

Innsbrook GC - Clubhouse Site, Bettie County, NC
Job # 1506, March 2008
Table la. Deep boring description of SWPI-1.
soil color*, mottling*,
horizon depth soil structure* soil texture* and comments i e Pern1R elevation
(USDA) (1)-1,k) (USDA) (USDA) (itihr) ul-NISL)
Ap -
ABSENT
ABSENT
ABSENT
ABSENT
yellowish brown (I OYR 5/4);
16.85
moderate medium
silty clay loam to
common distinct dark gray
Bit 0.0-0.2
subangular blocky;finn,
0.06-0.2
sticky and plastic
silty clay
(1li '4/1) and yellowish
re
red (SYR 4/8) mottles
grayish brown (I OYR 5/2):
16.65
moderate medium
Bt2 0.2-1.2
subangular blocky: firm,
silty clay
common red (2.SYR 4/8) and
0.06-0.2
sticky and plastic
yellowish brown (I OYR 5/6)
mottles
light olive brown (2.5Y 5/3);
15.65
BC 1.2-2.0
weak medium
sandy clay loam to
common red (2.5YR 4/8) and
0.06-0.2
subangular blocky
sandy loam
few brownish yellow (I OYR
6/8) mottles
14.85
sandy loam to loanry
olive yellow (2.5Y 6/8) to
Cl 2.0-6.0
weak, fine, granular
light gray (I OYR 7/1); fine to
2.0-6.0
sand
tried sand
10.85
C2 6.0-6.5
weak, fine, granular
sandy loam to loamy
light gray (2.5Y7/1); fine to
2.0-6.0
sand
medium sand
10.35
C3 6.5-7.5
weak, fine, granular
sand to loamy sand
variegated; very fine to fine
2 0-6.0
,rand
9.35
C4 7.5-9.0
weak, fine, granular
sand
brownish yellow (I OYR6/8);
2.0-6.0
very tine to fine sand
I el'ermR- permeability range (USDA, 1996)
estimated seasonal high water table: >1.5' below land surface (bls)*
" determined via standard USDA field methods (i.e., soil redosimorphic features)
NOM': site conditions hare been modified. Senconal high crater table estimates from soil nrarphology are INVALID (see Report)
TI
Cpec

Innsbrook CC - Clubhouse Site, Berne County, NC
Job # 1506, March 2008
Table Ib. Deep boring description of SWPI-2.
soil color*, mottling*,
horizon depth soil structure* soil texture* and comments i e PermR elevation
(USDA) 01-1,10 (USDA) (119DA) (in/hr) la-MSI.I
Ap -
ABSENT
ABSENT
ABSENT
ABSENT
yellowish brown (I OYR 5/4);
17.00
moderate medium
Silty clay loam to
common distinct dark gray
Btl 0.0-0.2
subangular blocky; firm,
Silty clay
(I OYR 4/1) and yellowish
0.06-0.2
sticky and plastic
red (5YR 4/8) mottles
grayish brown (I OYR 5/2);
16.80
moderate medium
common red (2.5YR 4/8) and
Bt2 0.2-1.2
subangular blocky; firm,
silly clay
0.06-0.2
sticky and plastic
yellowish brown (I OYR 5/6)
mottles
15.80
13C 1.2-2.0
weak medium
sandy clay loam to
light olive brown (2.5Y 5/3);
0.06-0.2
subangular blocky
sandy loam
common red (2.5YR 4/8)
15.00
Sandy loam to loamy
olive yellow (2.5Y 6/8) to
Cl 2.0-6.0
weak, fine, granular
light gray (I OYR 7/1); line to
2.0-6.0
sand
tiled sand
11.00
C2 6.0-6.5
weak, fine, granular
sandy loam to loamy
light gray (2.5Y7/1); line to
2.0-6.0
sand
medium sand
10.50
C3 6.5-7.5
weak, fine, granular
and to loamy sand
very fine to finenular
2.0-6.0
sand
9.50
C4 7.5-9.0
weak, fine, granular
sand
brownish yellow (I OYR6/8);
2 0-6.0
very fine to tine sand
I c1'ennR - permeability range (USDA, 1996)
estimated seasonal high water table: >1.5' below land surface (bls)*
• determined via standard USDA field methods (i.e.., soil redosimorphic features)
N0I7i: ,ite eonditions hair been modified. Seasonal high water table estimates from soil morphology are INVALID (see Report)
T2 Cpec

Innsbrook CC - Clubhouse Site, Bertic County, NC
Job 9 1506, March 2008
Table Ic. Deep boring description of SWPI-3.
soil color*, mottling*,
horizon depth soil structure* soil texture* and comments i e PermR elevation
(USDA) to -his) (USDA) (USDA) (uvle) (1t-NISI.)
17.75
Ap 0.0-0.6
weak, fine, granular
sandy loam
dark grayish brown (IOYR
2.0-6.0
yellowish brown (I OYR 5/4);
17.15
moderate tc medium
silty clay loam to
common distinct (lark gray
Btl 0.6-1.0
'
substicky
silty clay
(I OYR 4/1) and yellowish
0.06-0.2
and plastic
sticky and plastic
red (5YR 4/8) mottles
grayish brown (I OYR 5/2);
16.75
moderate medium
common rod (2.5YR 4/8) and
B[2 I.0-2.0
sub limo,
silty clay to clay
0.06-0.2
y and
sticky and plastic
yellowish brown (I OYR 5/6)
mottles
light olive brown (2.5Y 5/3);
15.75
BC 2.0-3.0
weak medium
sandy clay loam to
common red (2.5YR 4/8) and
0.06-0.2
subangulur blocky
sandy loran
few brownish yellow (I OYR
6/9) mottles
14.75
sandy loans to loamy
olive yellow (2.5Y 6/8) to
C1 3.0-6.0
weak, line, granular
sand
light gray (I OYR 7/1); tine to
2.0-6.0
med sand
11.75
C2 6.0-7.2
weak, fine, granular
loamy sand to sandy
variegated; very fine to line
2 0-6.0
loan
sand
10.55
C3 7.2-8.6
weak, tine, granular
silty loam to loamy
variegated: very tint sand
2.0-6.0
sand
9.15
C4 8.6-9.0
weak, fine, granular
sand to loamy sand
variegated; very fine to tine
2.0-6.0
sand
8.75
C5 9.0-10.0
weak, fine, granular
sand
brownish yellow (IOYR6/8):
2 0-6.0
very tine to fine sand
I cPermR - permeability range (USDA, 1996)
estimated seasonal high water table: >1.5' below land surface (bls)*
determined via standard USDA held methods (ix- soil rcdo.eimogthic features)
NOTE: site conditions have been modified. Seasonal high water table evd hates from soil morphology are INVALID (.me Report)
T3 Cpec

Innsbrook GC - Clubhouse Site, 6crtie County, NC
Job 9 1506, March 2008
Table Id. Deep boring description of SWPI-4.
soil color*, mottling*,
horizon depth soil structure* soil texture* and comments i e PermR elevation
(USDA) flLhl') NSDA) (USDA) IINhr) 01-NISt.)
17.71
Ap 0.0-1.0
weak, fine, granular
sandy loam to silty
dark grayish brown (IOYR
2 0-6.0
loam
4/2)
yellowish brown (I OYR 5/4);
16.71
moderate medium
silty clay loam to
common distinct dark gray
I311 1.0-1.7
,
substicky
silty clay
(I OYR 4/1) and yellowish
0.06-0.2
and plastic
sticky and plastic
red (5YR 4/8) mottles
grayish brown (I OYR 5/2);
16.01
moderate medium
common red (2.5YR 4/8) and
13t2 1.7-3.0
suhartgular blocky: firm,
silty clay today
0.06-0.2
sticky and plastic
yellowish brown (I OYR 5/6)
mottles
light olive brown (2.5Y 5/3);
14.71
13C 3.0-3.9
weak medium
sandy clay loans to
common red (2.5YR 4/8) and
0.06-0.2
subangular blocky
sandy town
lew brownish yellow (I OYR
6/8) mottles
13.81
sandy loam to loamy
olive yellow (2.5Y 6/8) to
Cl 3.9-5.5
weak, tine, granular
light gray (IOYR 7/1); fine to
2.0-6.0
sand
wed sand
12.21
C2 5.5-7.6
weak, fine, granular
loamy sand to sandy
variegated; very tine to fine
2 0-6.0
loam
sand
10.11
C3 Z
weak, tine, granular
Bitty loam to loamy6-10.4
variegated; very tint sand
2.0-6.0
Slllld
7.31
C4 10.4-12.0
weak, fine, granular
sand to loamy sand
variegated; very fine to fine
2 0-6.0
sand
1 OennR - permeability range (USDA, 1996)
estimated seasonal high water table: >1.5' below land surface (his)*
• determined via standard USDA field methods (i.e., soil redoximorphic teannes)
NOTR: site cm ditiom have been modified. Seasonal high (cater table estimate.,from roil morphology are INVALID (gee Report)
T4 Cpec

Innsbrook CC - Clubhouse Site, Bertic County, NC
Job N 1506, March 2008
Table le. Deep boring description of SWP2-1.
soil color*, mottling*,
horizon depth soil structure* soil texture* and comments i e PermR elevation
(USDA) (a-bls) (USDA) (USDA) uwlho (a-MSL)
21.51
moderate medium
FILL 0.0-2.4
subangular blocky; fimi,
silty clay to clay
variable
0.06-0.2
sticky and plastic
19.11
Ap 2.4-3.4
weak, fine, granular
sandy loam
grayish brown ( I OYR 5/2)
2.0-6.0
18.11
moderate medium
sandy clay loam to
Btl 3.4-4.0
subangular blocky; first,
sandy clay
brown (I OYR 5/3)
0.06-0.2
sticky and plastic
17.51
moderate medium
brown (IOYR 5/3); common
Bt2 4.0-5.0
subangular blocky; firm,
sandy clay
red (2.5YR 4/8) and very pale
0.06-0.2
sticky and plastic
brown (IOYR 8/2) mottles
16.51
BC 5.0-6.2
`Weak medium
sandy clay loam to
yellowish brown (10YR 5/4)
0.06-0.2
subangular blocky
sandy loam
to varigated
15.31
CI 6.2-9.5
weak, tine, granular
sandy loam to loamy
variegated; very tine to line
2 0-6.0
sand
sand
12.01
C2 9.5-I2.0
loose, granular
loamy sand to sand
variegated; very tine to tine
2.0-6.0
sand
estimated seasonal high water table: >5.0' below land surface (his)*
I O'ermR - permeability range (USDA, 1996) - determined via standard USDA field methods (i.e., soil redosimorphic features)
NOTE -:.site conditions have been modified. Seasonal high water table estimates from soil morphology are LNVA LLD (see Report)
T5 Cpec

Innsbrook CC - Clubhouse Site, Bettie County, NC
Job # 1506, March 2008
Table I f. Deep boring description of SWP2-2.
soil color*, mottling*,
horizon depth soil structure* sail texture* and comments i e PermR elevation
(USDA) 01-1,N) (USDA) (USDA) tiN o (a -NISI.)
24.12
moderate medium
PILL 0.0-4.7
subangular blocky; firm,
silty clay to clay
variable
0.06-0.2
sticky and plastic
19.42
Ap 4.7-5.5
weak, fine, granular
sandy loam
grayish brown (I OYR 5/2)
2.0-6.0
18.62
moderate medium
sandy clay loam to
Btl 5.5-6.4
subangular blocky; firm,
brown (I OYR 5/3)
0.06-0.2
sticky and plastic
sandy clay
17.72
moderate medium
brown (I OYR 5/3); common
Bt2 6.4-7.3
subangular blocky; firm,
sandy clay
red (2.5YR 4/9) and very pale
0.06-0.2
sticky and plastic
brown (I OYR 8/2) mottles
16.82
BC 7.3-8.5
weak medium
sandy clay loam to
yellowish brown (IOYR 5/4)
0.06-0.2
subangular blocky
sandy loam
to varigated
15.62
CI 9.5-11.0
weak, fine, granular
sandy loam to loamy
variegated; very line to fine
2 0-6.0
sand
sand
13.12
C2 I I.0-13.2
weak fine, granular
loamy sand to sandy
variegated: very fine to fine
2.0-6.0
loam
sand
10.92
C3 13.2-14.9
loose, granular
loamy sand to sand
variegated; fine to medium
2 0-6.0
sand
9.22
C4 14.9-16.0
loose, granular
sand
yellow brown (I OYR 5/6);
2.0-6.0
fine sand
I OennR - pemmahitily range (USDA, 1996)
estimated seasonal high water table: >5.0' below land surface (his)*
r delemined via standard USDA field methods D.c., soil redo.eimorphic features)
NOTR: .rite conditions have been modified. Seasonal high neater table estimmesfrom .soil morphology are INVALID (see Report)
T6 Cpec

Innsbrook CC - Clubhouse Site, Bertie County. NC
Job # 1506, March 2008
Table Ig. Deep boring description of SWP2-3.
soil color*, mottling*,
horizon depth soil structure* soil texture* and comments ) e PermR elevation
(USDA) (a bl') (USDA) (USDA) ('.40 (a -XIS]')
25.87
moderate medium
PILL 0.0-6.8
subangular blocky; firm,
silty clay to clay
variable
0.06-0.2
sticky and plastic
19.07
Ap 6.8-8.0
weak, fine, granular
sandy loam
grayish brown (I OYR 5/2)
2.0-6.0
17.87
moderate medium
sandy clay loam to
Bit 8.0-8.7
subangular blocky; final,
brown (I OYR 5/3)
0.06-0.2
sticky and plastic
sandy clay
17.17
moderate medium
brown (I OYR 5/3); common
Bt2 8.7-9.9
subangular blocky; firm,
sandy clay
red (2.5YR 4/8) and very pale
0.06-0.2
sticky and plastic
brown (I OYR 8/2) mottles
15.97
BC 9.9-10.9
weak medium
sandy clay loam to
yellowish brown (I OYR 5/4)
0.06-0.2
subangular blocky
sandy loam
to varigated
14.97
C I 10.9-15.4
weak, tine, granular
sandy loam to loamy
variegated; very tine to tine
2.0-6.0
sand
sand
10.47
C2 15.4-17.0
loose, granular
loamy sand to sand
variegated; tine to medium
2.0-6.0
sand
8.87
C3 17.0-18.0
loose, granular
and
yellow brown (I OYR 5/6);
y
2.0-6.0
fine sand
I cPenuR - permeability range (USDA, 1996)
estimated seasonal high water table: >5.0' below land surface (bls)*
- determined cia standard USDA held methods (i.e., soil redoximorphic features)
NOTE': site conditions have been modified. Seasonal high water table estimates from soil morphology are INVALID (see Report)
T7 Cpec

Imisbrook GC - Clubhouse Site, Benin County, NC
Job # 1506, March 2008
Table Ih. Deep boring description of SWP2-4.
soil color*, mottling*,
horizon depth soil structure* soil texture* and comments i e PermR elevation
(USDA) ul-blo (USDA) (USDA) 6ethp m-Nist-)
23.50
moderate medium
FILL 0.0-4.3
subangular blocky; firm,
silty clay to clay
variable
0.06-0.2
sticky and plastic
19.20
Ap 4.3-5.0
weak, fine, granular
sandy loam
grayish brown (I OYR 5/2)
2.0-6.0
18.50
moderate medium
sandy clay loam to
Btl 5.0-5.4
subangularblocky; firm,
brown (I OYR 513)
0.06-0.2
sticky and plastic
sandy day
18.10
moderate medium
brown (I OYR 513); common
Bt2 5.4-6.2
subangular blocky; firm,
sandy clay
red (2.5YR 4/8) and vary pale
0.06-0.2
sticky and plastic
brown (I OYR 8/2) mottles
17.30
BC 6.2-7.2
weak medium
sandy clay loam to
yellowish brown (I OYR 5/4)
0.06-0.2
subangular blocky
sandy loam
to varigated
16.30
Cl 7.2-8.7
walk medium
subangular blocky to
sandy loam to loamy
variegated; very line to tine
2.0-6.0
weak, tine, granular
sand
sand
14.80
C2 8.7-12.2
weak medium
subangular blocky to
sandy loam to sandy
variegated; very fine M fine
0.6-2.0
weak, tine, granular
clay loam
sand
11.30
C3 12.2-14.9
massive; very firm, and
clay
gleyed to variegated
2.0-6.0
very sticky and plastic
8.60
C4 14.9-15.3
(nose, granular
sand
yellow brown (I OYR 5/6):
2.0-6.0
line sand
estimated seasonal high water table: >5.0' below land surface (bls)*
I ePennit - permeability range (USDA, 1996) • determined via standard USDA rield methods (i.e., soil reda.cimorphic features)
A'O7'1,-': afire conditions have been modified. Seasonal high nmter table estimates from soil morphology are INVALID (see Reporo
Tx Cpec

Innsbrook GC - Clubhouse Site, 13ertic County, NC
Job # 1506, March 2008
Table 2. Temporary well construction details and analysis data.
W'I
screen boring casing screen casing total ground NIP N'T DnC elevation screen water
Well ID diameter diameter length length IIAS depth elevation elevation 3/12/08 3112/08 NT DBS DBS column
am 60 uo (n) (it) tm uvmst.) utntsc) on dveasi.) on On (a)
SWPI-1
1.25
3
3.33
9.00
3.17
9.17
16.85
20.02
10.68
9.34
7.51
0.17
1.65
SWPI-2
1.25
3
3.33
9.00
2.08
10.25
17.00
19.08
9.56
9.52
7.48
1.25
2.77
SWPI-3
1.25
3
3.25
9.00
1.83
10.42
17.75
19.58
10.17
9.41
8.34
1.42
2.08
SWPI-4
1.25
3
4.75
9.00
1.75
12.00
17.71
19.46
11.13
8.33
9.38
3,00
2.62
SWP2-1
1.25
3
5.83
9.00
2.67
12.17
21.51
24.18
14.61
9.57
11.94
3.17
0.22
SWP2-2
1.25
3
8.42
9.00
1.58
15.83
24.12
25.70
15.95
9.75
14.37
6.83
1.47
SWP2-3
1.25
3
10.67
9.00
1.33
18.33
25.87
27.20
17.57
9.63
16.24
9.33
2.10
SW112-4
1 1.25
3
6.83
1 9.00
1 0.67
1 15.17
1 23.50
1 24.17
1 14.00
1 10.17
1 13.33
1 6.17
1 1.83
casing HAS - casing height above land surface
total depth - from land surfan
ground elevation - estimated ground elevation in feet above mean sea levy
MP elevation - measurement point elevation in feet above mean sea lest
W"r DHC - water table depth below measurement pt. (i.e., well casing
WI' elevation - water table elevation
W r DRS - depth to water table below land surface
screen DHS - depth to tap of well screen below land surfer
water column - height of water in well above the well's bast
. - wells installed in ditch (not included in mean / min / tnax calculation
mean = 9.47 11.07
min = 7.48
max= 1e.24
T9 CI)ea

Innsbrook GC - Clubhouse Site, Bertie County, NC
Job # 1506, March 2008
Table 3. Most -restrictive horizon Ksat estimates.
ID # horizon soil type K'.'
@n✓brl umm't ISPtVa^2)
SWPI-KI BC
Craven -Lenoir
0.04
0.02
0.24
SWPI-K2 BC
Cmven-Lenoir
0.07
0.03
0.41
SWPI-K3 BC
Craven -Lenoir
0.04
0.02
0.24
SWPI-K4 Bt
Craven -Lenoir
0.12
0.05
0.71
SWP1-K5 Bt
Craven -Lenoir
0.12
0.05
0.71
SWP2-KI Bt
Craven -Lenoir
0.09
0.04
0.53
SWP2-K2 Bt
Craven -Lenoir
0.06
0.02
0.35
SWP2-K3 Bt
Craven -Lenoir
0.04
0.02
0.24
SNN'P2-K4 BC
Craven -Lenoir
0.18
0.07
1.06
SNN'P2-K5 BC
I Craven -Lenoir
0.19
0.07
1.12
geornean = 0.08 0.03 0.48
I D # - Ksat field identification
Ksat -saturated hydraulic conductivity (front Arpendix B
TIO Cpec

Innsbrook GC - Clubhouse Site, Bertic County, NC
Job # 1506, March 2008
r
"All
-;"K
41
51 jphm
W,
T,
E X1 S I TIE
fill I 01�
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deft
N D'
4L
Z
7 Xl'o
ny
ZM.
4
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rr
P E C
Figure 1. Location of Innsbrook Golf and Marina Clubhouse Site,
Environmental, Inc.
Bertie County, NC

Innsbrook GC - Clubhouse Site, Bertie County, NC
BMP-2,
qi� �'j
C
Ut
CLUBHO
USES.
AND FITNESS
.�
CENTER
/' YN
POND
OPEC
N,Environmental, Inc.
N
X
�V
< POND
BMP-1
J'a
wetland ,!.111�
Figure2. Location of proposed stormwater BMPs.

Innsbrook GC - Clubhouse Site, Berrie County, NC
Job N 1506, March 2008
STOMwTfi
9POVDPPATE
PC)
(rrnJ
�'� �=•... ` \___ ��� r0 13E USED AS
CI C9
oualNc roNSTRu
RIPRA? VELOCITY
DISSIPATOR #2
Dh'JLET VJIDTF (SDo)
8'1_e70 TAN' nHK.
/ ^' ✓� t.. i���/r /� j,i ^-� US CLAS^a P RFRn�
l
�V SWP1-4
"/�J'�i/ (�;\��
SDWP1-2
TIE1Af�JRAFY J.-
_ _ EDIMEhtT TRAP 2 l ` • /�
5 tVxs2'I ,?'il> � / r- �\ ( I U--.3� )�� .. r.��J/•t/;r''I..
�IITH A 6' WEIR ..r / / '1\ / SWP1 3
lSIUKLILIV (HIIUPo
AREA f II JTYP.)
TO BE (jONSTRUCTED _ ' �� rl
AFTFR S M,FNT TRAP #2 ux rs, ��
IREOUITED
Is NO LpNCEP
Ktt LO �CALEVEL SPR�ADER
N 2 30cr5 /
DISSIPN-OF,
�!\
C42�8 LENO'TH „y / F, #1 (TYP=) G / t �f \\ _ .. ..
lh!DT
x15 Wx36"THK.
STORMWATER. wuNTAN
FOND 2 - SIDE OF
-0 BE USED AS
$EUI+AENT TRAP
\ `\ DURING COIJSTGUCTIOIJ
Q'1 \[WP2-1 }. ..\\ TE RPFAP 1 3 # VEL DSS]P
D SSIPniOP. `
I\ INIFI MDIH (31;n) =
6'Lx10'W.12'4
T-IK.
�
`, USE sass n gLMRAP I \
P2-2 � I
r•T f A \ FXISIRanmJG
SW P2-3 cA
� � �\` rxr
V �� \
PHASEEMPOR\R , _- �\ \ \
pFI11!/Fnl I'tAP#5� �' �\l�• - 'FITNESS,
9'W'x4C Lr 3'DV ; „ , 'CENTER-
D_ .W TH A 4 W
EIR,
� rho) \ SW P2 4 \�•' ��. � �`\
`,LEVEL LOWSFIRDICER #2
PEAY. FLOW J3CFS
LENG-H=�2P
URE "< AREA >S
T CCN
0 BE CONSTRUCTED J
�,.AFEP. SEDIMENT
,S NO LONGER
RIPRAP VELOCI7
300 DISSIPATOR #31
C P E C Figure 3. Data -collection oints
Environmental, Inc. P

APPENDICES
Appendix A - Field Procedures
Appendix B - Data Analysis Worksheets

Appendix A
Field Procedures
Site Survey and Mapping; ......
Subsurface Descriptions ........
Observation Well Installation
A-1
A-1
A-1
In -Situ Saturated Hydraulic Conductivity Estimates.................................................................. A-2

Innsbruck GC - Clubhouse Site, Berrie County, NC
Job N 1506, March 2008
Site Survey and Mapping
Before the site visit, Cpec Environmental, Inc. (Cpec) compiled various site information
(ownership, site maps, USGS topographic maps, tax maps, aerial photographs, etc.). During the
site visit, Cpec recorded (on a horizontal orthogonal grid) the location of property boundaries
and other site elements such as structures, roads, fences, utilities, wells, ditches, creeks, etc.
Cpec produced a comprehensive site map incorporating all pertinent site information. A
Registered Land Surveyor performed all top of casing (TOC) horizontal and vertical
registrations.
Subsurface Descriptions
Soil -profile descriptions and bore logs were described from either boring cuttings or disturbed -
core samples. Representative samples were collected from selective soil horizons and, above
and below, abrupt lithologic or hydraulic boundaries. Subsurface samples reside in Cpec's
archives. Archived samples will be held for one year beyond this report date.
Qualitative subsurface characterizations included: soil morphological properties (e.g., texture,
structure, color, presence and type of redoximorphic features, etc.), thickness and type of
restrictive horizons, depth to saprolite and bedrock (parent material), lithologic character of
saprolite and bedrock, ambient soil wetness conditions, and seasonal high water table estimates.
Observation Well Installation
Cpec installed one and one -quarter inch (1.25") diameter observation wells for static water table
measurements. Observation wells were "temporary" wells and not intended to be used for long-
term groundwater monitoring.
Observation wells were constructed of flush -jointed PVC casings with 0.010-inch slot screens
and no glues or solvents were used. After the well (riser and screen) was inserted into the
borehole, the well annulus was backfilled with tine silica sand to —1.0-tt below land surface.
Bentonite was used to till the annular space above the sand -pack to the ground surface. The
bentonite seal prevents cross -contamination from above the well's screened interval. All wells
were similarly constructed and completed above the finished grade. Upon completion, each well
was "developed" by withdrawing five bore volumes of groundwater or until groundwater was
relatively clear. After achieving atmospheric equilibrium, a static water table measurement was
made. Installation methods are described below.
Hand -auger method — 1.25" observation wells
Cpec used hand augers (three-inch diameter) to bore to the target depth. The observation well
was inserted into the open borehole.
A-1
Cpec

Innsbrook GC - Clubhouse Site, Bertie County, NC
Job N 1506, March 2008
In -Situ Saturated Hydraulic Conductivity Estimates
Cpec conducted pumping tests and in -situ constant -head permeameter tests to determine the
saturated hydraulic conductivity (Ks„) in the saturated zone and unsaturated zones, respectively.
Field data are presented in Appendix B.
Unsaturated zone Ks, _estimates
Compact Constant -head Permeameter Method
Cpec conducted unsaturated zone Ks,t measurements at selective locations and at selective soil
horizons within the study area.
Unsaturated zone Ksat measurements were performed using a compact constant -head
penneameter (CCHP). An auger boring (3-inch diameter) was made to the target depth, the
boring wall was lightly cleaned with a wire brush, and the base of the boring was planed to a
smooth surface. A water -discharging appendage was placed at the base of the auger hole and
water (from the instrument's reservoir) was allowed to flow in. Throughout the test, constant
head -pressure (4 to 8-inches Hp) was maintained at the auger hole's base and water flowed freely
from the instrument at a rate equal to the rate at which it was conducted by the soil. After a
constant flow rate was achieved, discharge from the instrument was measured at specific time
intervals. Saturated hydraulic conductivity values were solved using the Glover solution (as
cited in Amoozegar, 1989; Soil Sci. Soc. Am. J. 53:1356-1361).
A-2 Cpec

Appendix B
Data Analysis Worksheets
In -situ Unsaturated Zone Ksat Estimates — Compact Constant Head Permeameter Method ...... B-1

Unsaturated Zone Ksat Estimates
Compact Constant -head Permeameter Method
Innsbrook GC - Clubhouse Site, Bertie County, NC
Job # 1506, March 2008
Compact Constant Head Permeameter Results - 03/10/08 thru 03/12/08
resrvr
ID # soil type horizon boring depth r H s FFR Q A Ksat
". mrl 4m1 Lm "l,o 1-1 -1 1-,", 1-11", unit,,, ,nMnn,
SWPI-KI
Cmrcd
BC
45
18
3
16 1
2.3
45
9.61E-04
0.04
0.02
0.25
Lenoir
SWPI-K2
Cna,ml
13C
52
20
3
15 1
3.5
70
1.06E-03
0.07
0.03
0.44
Lenoir
SWPI-K3
Lenoir
BC
48
19
3
16 1
2.1
41
9.61E-04
0.04
0.02
0.23
Lenoir
SWPI-K4
Lenoir
Bt
46
18
3
24 1
11.0
220
5.23E-04
0.12
0.05
0.68
Lenoir
SWPI-K5
craven/
Bt
46
18
3
18 1
7.4
148
8.08E-04
0.12
0.05
0.70
Ixnnir
SWP2-KI
CaveN
Bt
150
59
3
23 l
8.1
163
5.58E-04
0.09
0.04
0.54
Ixanir
SWP2-K2
cawen/
Bt
149
59
3
25 1
6.0
120
4.91E-04
0.06
0.02
0.35
Lenoir
SWP2-K3
Craven/
Bt
146
57
3
22 1
3.1
62
5.98E-04
0.04
0.01
0.22
Lenor
SWP2-K4
C.,eV
BC
183
72
3
15 1
8.4
168
1.06E-03
0.18
0.07
1.04
Lcnnir
SWP2-K5
Cp14Cal
13C
182
72
3
16 1
10.0
200
9.61 E-04
0.19
0.08
1.13
Lenoir
IDk Ksu field identification
SoIItype NRCS- SoilScrice
horizon soil horizon identiticatiot
r boring radius (cm)
I I height of constant head in twang (cm
resters number ol'wmer reservoirs used 0 = 20em^3/cm/hr)(2 = 105cm^3/em/ht
1717R Field Row Bate (cunbr) - field measuremer
Q volumetric flow rate (cm^3/hr
Ksat hydraulic conductivity in teal (in/hr)(gpd/li"2
/ccnrn till B-1
C'pec