SWA000227_Soils/Geotechnical Report_20240105

HYDRAULIC CONDUCTIVITY TESTS
Waxhaw Volunteer Fire Department (VFD)
Waxhaw Creek Road
Waxhaw, North Carolina
Union County PIDs(05150002B)
Prepared For:
Kim Parton
Stewart-Cooper-Newell Architects
719 East Second Street
Gastonia, NC 28504
Prepared By:
WSC
WOOD SOIL
CONSULTANTS
620 Lee Fox Lane
Hillsborough, NC 27278
[phone]
January 4 2024 ,® SOIL SCE,
G L G.
1219
Michael Wood, LSS T

INTRODUCTION
Stewart-Cooper-Newell Architects is investigating the feasibility of a stormwater control measure
(SCM)within the proposed Waxhaw VFD on Waxhaw Creek Road, Waxhaw,NC (Union County
PID: 0515000213). The SCM is being considered to collect and treat runoff from impervious surfaces.
As part of the investigative process, hydraulic conductivity tests (KsAT)were performed in the
expected horizon that would serve as the bottom of the SCM. Wood Soil Consulting(WSC)has been
retained to perform the soils investigation. This investigation was based on the findings in the August
15, 2021 Seasonal High Water Table Determination performed by Three Oaks Engineering.
INVESTIGATION METHODOLOGY
The field investigation was performed on January 3, 2024,by Michael G. Wood, LSS and Ethan T.
Wood. Two tests were performed with the WSC location provided by Stewart-Cooper-Newell
Architects.
The infiltration rate was determined by measuring the KsAT rate of the soil with a compact constant-
head permeameter(Amoozemeter). KsAT test values were generated using the published calculations
and formulas provided in the meter's User's Manual. The Glover solution was chosen as the most
appropriate method for calculating KsAT rates. The Glover solution is recommended when the distance
between the bottom of the auger hole and any impermeable layer(s) is greater than two times the head
(H), or constant water level in the hole.
The Glover solution is formulated by: KsAT=AQ
Where: A= {sink-'(H/r)-[(r/1-1)2+1] '/2+r/H} /(27rH2)
And: Q is the steady-state rate of water flow from the Amoozemeter into the auger
hole.
To solve for A: H is the head in the hole(i.e. total water depth) and r is the radius of the hole.
Values for H and r can be found on the attached KsAT data sheets.
RESULTS
Hydraulic Conductivity Measurements
KsAT tests were completed in the most restrictive soil horizon that occurs within 2-feet of the SHWT
or boring termination and the results are listed in Table 3 below. It should be noted that KsAT values
only represent the infiltration rate within the tested soil horizon and cannot be applied to other soil
horizons with differing soil properties (texture, structure, consistence, mineralogy, etc.).
Table 3: H draulic conducti ity test results parameters.
Test# Soil Boring# Horizon/ Test Depth (in) Measured KsAT(in/hr)
Texture
1 Ksat-I C/1 102 0.064
2 Ksat-2 C/1 102 0.028
Texture Abbreviations: 1—Loam
Waxhaw VFD Ksat Report January 4, 2024

CONCLUSIONS
The findings presented herein represent WSC's professional opinion based on our soil investigation.
KsAT tests were conducted within the horizon that well serve as the infiltrative surface of the SCM.
Due to the inherent variability of soils to change over short distances, the soil profile description
presented in this report may not be representative of the entire soil system of the SCM footprint. This
report is provided to assist in the application for the SCMs by providing soil information.
Waxhaw VFD Ksat Report January 4, 2024

SATURATED HYDRAULIC CONDUCTIVITY STUDY
Waxhaw VFD
Date: 1/3/2024 Weather Condition: 48
Location: KSAT 1 Temperature(F):Mostly Cloudy
Number: 1
Horizon: C cm in
Depth(inches): 102.0 SET UP Target Water Level: 15.2 6.0
cm in Beginning Water Level: 15.2 6.0 LTAR vs.Time
Hole Depth: 259.1 102.0 Ending Water Level: 15.2 6.0
Reference: + 10.2 4.0
Head: - 15.2 6.0
CHT Tube(s)setting: = 254.0 100.0 Hole diameter(d): 5.0 cm -20 20 40 60 80 100 120
Hole radius(r): 2.5 cm
Valve Setting: coefficient A: 0.001136
1-ON 2-ON x
NOTE:Readings based on Ending Water Level
Coversion Factor(C.F.): 20.0 a
Water Change in Chamber Clock Elapsed Time Flow Volume Q K K K
Reading Water Level C.F. Time(min) (min) (cm3) (cm3/hr) (cm/hr) (in/hr) gal/ft2/day
0 0.0 20.0 0.0
0 0.0 20.0 0.0 0.00 0.000 #DIV/0! #DIV/0! #DIV/0! #DIV/0!
0 0.0 20.0 0.0 0.00 0.000 #DIV/01 #DIV/01 #DIV/01 #DIV/01 Time(min)
40 -40.0 20.0 30.0 30.00 -800.000 -1600.0 -1.8180 -0.7157 -10.709
38.5 1.5 20.0 60.0 30.00 30.000 60.0 0.0682 0.0268 0.402
37.8 0.7 20.0 75.0 15.00 14.000 56.0 0.0636 0.0251 0.375
37.1 0.7 20.0 90.0 15.00 14.000 56.0 0.0636 0.0251 0.375
36.4 0.7 20.0 105.0 15.00 14.000 56.0 0.0636 0.0251 0.375
35.7 0.7 20.0 120.0 1 15.00 14.000 56.0 0.0636 0.0251 0.375
'Note:10L of water run through meter before taking readings. lFinal Ksat 0.064 0.025 0.375
SATURATED HYDRAULIC CONDUCTIVITY STUDY
Waxhaw VFD
Date: 1/3/2024 Weather Condition: 48
Location: KSAT 2 Temperature(F):Mostly Cloudy
Number: 2
Horizon: cm cm in
Depth(inches): 102.0 SET UP Target Water Level: 15.2 6.0
cm in Beginning Water Level: 15.2 6.0 LTAR vs.Time
Hole Depth: 259.1 102.0 Ending Water Level: 14.0 5.5 0.6
Reference: + 10.2 4.0
Head: - 15.2 6.0 0.5
CHT Tube(s)setting: = 254.0 100.0 Hole diameter(d): 5.0 cm
Hole radius(r): 2.5 cm i 0.4
Valve Setting: coefficient A: 0.001292 r
1-ON 2-ON m 0.3
m
NOTE:Readings based on Ending Water Level �
Coversion Factor(C.F.): 20.0 0.2
Water Change in Chamber Clock Elapsed Time Flow Volume Q K K K 0.1
Reading Water Level C.F. Time(min) (min) (cm3) (cm3/hr) (cm/hr) (in/hr) gal/ft2/day
42.3 0.0 20.0 0.0 0
42 0.3 20.0 5.0 5.00 6.000 12.0 0.0931 0.0366 0.548 0 5 10 15 20 25 30 35 40
41.7 I 0.3 20.0 10.0 5.00 6.000 72.0 0.0931 0.0366 0.548 Time(min)
41.5 0.2 20.0 15.0 5.00 4.000 48.0 0.0620 0.0244 0.365
41.2 0.3 20.0 20.0 5.00 6.000 72.0 0.0931 0.0366 0.548
40.9 0.3 20.0 25.0 5.00 6.000 72.0 0.0931 0.0366 0.548
40.6 0.3 20.0 30.0 5.00 6.000 72.0 0.0931 0.0366 0.548
40.4 0.2 20.0 35.0 5.00 4.000 48.0 0.0620 0.0244 0.365
40.2 0.2 20.0 1 40.0 5.00 4.000 48.0 0.0620 0.0244 0.365
Final Ksat 0.072 0.028 0.426

Project No.
SITE PLAN NOTES - - ---- - - - _ / • )
- _ _ _ _ OWNER/DEVELOPER: LEGEND
1. ALL DIMENSIONS ARE AT 90 DEGREES UNLESS OTHERWISE NOTED. WAXHAW COMMUNITY VOLUNTEER ------- LOT LINE 1 685
FIRE DEPARTMENT&RESCUE SQUAD INC
2. CONTRACTOR SHALL ESTABLISH AND VERIFY POINT OF BEGINNING(P.O.B.)AND STAKE SITE AS INDICATED ON CONSTRUCTION DOCUMENTS PRIOR TO COMMENCEMENT OF CONSTRUCTION.NOTIFY TIMMONS GROUP IMMEDIATELY OF ANY DISCREPANCIES. CONTACT: MR. >GREGORY SHARPE LIGHT DUTY ASPHALT PVMT.
3. ALL DIMENSIONS ARE TO FACE OF CURB OR CENTERLINE UNLESS OTHERWISE NOTED. PHONE: 7O4 843-4001 "' DOte: 05/11/2023
( ) Drawn by: WBS/SMP
4. ALL CONSTRUCTION SHALL BE IN ACCORDANCE WITH UNION COUNTY SPECIFICATIONS AND CONSTRUCTION DOCUMENTS. EMAIL:[e-mail]9 Om HVY.DUTY CONC.PVMT. Checked by: WBS
Revisions: 2
5. ALL SIDEWALKS SHALL BE 5'-0"UNLESS OTHERWISE NOTED REVISION DATE:
• CIVIL ENGINEER: 0 SIDEWALK 10/30/2023
RAW
6. NO OBSTRUCTION OF PUBLIC R OR SIDEWALK WILL BE ALLOWED.NO PARKING IS ALLOWED OVER PUBLIC SIDEWALKS. MR.BRAD SMITH,PE,PIMP NCDEQ COMMENTS
7. NO DEMOLITION LANDFILLS ALLOWED ON SITE. I TIMMONS GROUP
STOP SIGN
Li610 EAST MOREHEAD STREET,SUITE 250 STREETSIGN
8. APPROVAL OF THIS PLAN IS NOT AN AUTHORIZATION TO GRADE ADJACENT PROPERTIES.WHEN CONDITIONS WARRANT OFF-SITE GRADING,PERMISSION MUST BE OBTAINED FROM THE AFFECTED PROPERTY OWNERS.
a r CHARLOTTE,NORTH CAROLINA 28202 a EXISTING TREE ••'�
9. IN ORDER TO ASSURE PROPER DRAINAGE,KEEP A MINIMUM OF 0.5%SLOPE ON THE CURB. L��� PHONE:[phone] T IMMONS OROYP
<D TREE LINE
10. SUBSURFACE DRAINAGE FACILITIES MAYBE REQUIRED IN THE STREET RIGHT-OF-WAY IF DEEMED NECESSARY BY THE INSPECTOR. �Fr m� EMAIL: [e-mail] m�
11. THE DEVELOPER SHALL MAINTAIN EACH STREAM,CREEK,OR BACKWASH CHANNEL IN AN UNOBSTRUCTED STATE AND SHALL REMOVE FROM THE CHANNEL AND BANKS OF THE STREAM ALL DEBRIS,LOGS,TIMBER,JUNK AND OTHER ACCUMULATIONS. m TREE SAVE AREA
ONART-GOOPE12. HIGH-DENSITY POLYETHYLENE(HOPE)STORM DRAINAGE PIPE INSTALLED WITHIN EXISTING OR PROPOSED PUBLIC STREET RIGHT-OF-WAY MUST: ®TT ARCHITECTS,
F pEWELL
A.BE APPROVED BY PUBLIC WORKS REPRESENTATIVE FROM THE UNION COUNTY PRIOR TO GETTING PLAN APPROVAL.
B.BE APPROVED BY THE COUNTY'S INSPECTOR PRIOR TO ANY BACKFILL BEING PLACED. I SITE DATA _ _
C.BACKFILL MATERIAL MUST SE APPROVED BY THE COUNTY INSPECTOR PRIOR TO PLACEMENT OF THE MATERIAL WITHIN THE PUBLIC STREET RIGHT-OF-WAY. ALEXANDER FZAPP$
D.IF UNION COUNTY PUBLIC WORKS AGREE TO HAVE THE PIPE INSTALLED,THERE SHALL BE AN APPROVED BEDDING DETAIL AND A THIRD PARTY INSPECTOR SHALL VERIFY COMPACTION AND SUPPLY WRITTEN EVIDENCE OF COMPACTION RESULTS. HELEN ZAPP
PROJECT NAME: - oR
13. NON-STANDARD ITEMS(I.E.PAVERS,IRRIGATION SYSTEMS,ETC.)IN THE RIGHT-OF-WAY REQUIRE A RIGHT-OF-WAY ENCROACHMENT AGREEMENT WITH UNION COUNTY AND THE NORTH CAROLINA DEPARTMENT OF TRANSPORTATION BEFORE INSTALLATION. TAX PIN:05-153-022 WAXHAW VOLUNTEER FIRE DEPARTMENT
PI
WAUCHOPE FARMS LLC I LOT 44 MH-o�`N-r"fl,ELLM s.
14. DEVELOPMENT TO COMPLY TO ALL UNION COUNTY ORDINANCES(EMBANKMENT,BLASTING,DUST CONTROL,AND POST-CONSTRUCTION).SEE SHEET C501 FOR EMBANKMENT REQUIREMENTS. TAX PIN:05-150-002 I TRIPLE C MINI RANCHES PROJECT START DATE:OCT.01,2023 01r
BK 6680-604 PLAT BIC 6-44 PROJECT END DATE:FEB.01,2025 A
15. THOUGH IT MAY NOT BE ILLUSTRATED,SHOWN,LISTED,DENOTED,OR EXPRESSED THIS PLAN SHALL COMPLY WITH ALL PROVISIONS OF THE UNION COUNTY LAND DEVELOPMENT ORDINANCE IN EFFECT AT TIME OF REVIEW AND APPROVAL. PC L PG 593 ZONED:RA-40 rc 7`• ''��-
//
�,o8e556,, TYPE OF PLAN:
w
16. PARKING LOT SURFACE SHALL BE MAINTAINED IN SUCH A MANNER TO PREVENT,REPAIR,OR REPLACE DETERIORATED SURFACE MATERIAL,POT HOLES AND MAJOR CRACKING OF IMPERVIOUS/PERVIOUS SURFACE MATERIALAND STRIPING SHALL BE VISIBLE AND WELL DEFINED. PC P PG 215 I / :• SEAL '?
ZONED:RA-40 K COMMERCIAL SITE PLAN i 48704
vz wR S34_36'38"W \'� JURISDICTION: UNION COUNTY,NC LL %!� S
1 H. FAGINEER:`oJ`.a
• PIN:05-150-002B °_ 'o, BRAILDI-Eye„``
TREE SAVE AREA: • TOTAL ACREAGE:4.00 ACRES
ETB ±1.34ACRES d a co
• SITE ADDRESS:7013 WAXHAW CREEK ROADPo
m
¢> Mo On
• SITE LOCATION:APPROX.560 FEET NORTH OF THE INTERSECTION OF N m m
SEPTIC DRAIN FIELD WAXHAW CREEK ROAD(SR-1104)AND QUAIL ROOST DRIVE(SR-1233) $ 8 c
TO BE DESIGNED BY ON THE EAST SIDE OF WAXHAW CREEK ROAD.
OTHERS. --c
w ) TIC A TER LATITUDE: 34°51'54.07"N w a ci
WAUCHOPEFARMSLLC F' LONGITUDE: 80°46'17.51"W y L x
TAX PIN:05-150-002 $ LIA I'c7 a LL
BK 6680-804 .0 M ZONING: RA-40
PC L PG 593 TREE LINE
PC P PG 93 -$� • PROPOSED LAND USE: VOLUNTEER FIRE DEPT.FACILITY CCD
15
ZONED:RA-40 P O
-4 • SETBACKS:
FRONT 40 FEET
4.0 ACRES 11 25' PROPANE TANK PAD. SIDES 15 FEET (=B
SIZE TO BE DETERMINED. REAR 40 FEET CD
(TYP) I.-� 11.25(TVP) 00
I UP
z • BUILDING HEIGHT:
IN SANITARY SEWER ALLOWED: 50 FEET(NON RESIDENTIAL USE)
EFFLUENT PUMPED PROPOSED: 35 FEET 6 INCHES
I 22 TO SEPTIC FIELD
R5' FROM SEPTIC TANK. 0 BUILDING SF: (Do
BY OTHERS. 10,326 SF
DIESEL FUEL
15'SIDE 1267' STATION TREE SAVE PROVIDED:
SETBACK 1.34 ACRES -
DUMPSTE 12 67 O
- - ENCLOSURE TOTAL AREA DISTURBED:
I 3.35 AC
I FUTURE - 125A4 DENISE D CHAMBERLAIN BUA CALCULATIONS(NCDEQ):
!'J OUTBUILDING J ------ SITE LI T 3 TAX PIN:05-153-021
o POLE,
o LOT 43 TOTAL PARCEL AREA- 174,221 SF(4.00 acres) L
o I o I FUTURE _TRAINING ; CIOI1 TRIPLE C MINI RANCHES TOTAL PROJECT AREA- 180,774 SF(4.15 acres) L O
C� I 1
� O AREA 186.46' �- TRANSFORMER �� PUMPING CDG 1 PLAT BK 6-44 ------------------------------------------------ U
N I I PAD STATION N ZONED:RA-40 I>7
1 x BUILDING FOOTPRINT 10,326 SF U
(�y3, SEPTIC Z PH.1PAVEMENT= 32,310 SIF A\
GRAVITY SEWER TO TANK TOTAL PH.1 IMPERVIOUS= 42,636 SF V/
SEPTIC TANK FROM O"EREE w 0TOTAL FUTURE BUA
LEG. = +6,725 SF }P U
/ \ z m C! B POACH z 15'SIDE PROPOSED NEW BUA 49361 SF
w NE
o W ONE-STORY BUILDING
w w SETBACK __ _
I 2 APPARATUS BAYS z v U
FOOTPRINT AREA=10,326 SQ.FT. grn %PROJECT DENSITY=[New BUAJ/[Totel Project Area]x100% W
%PROJECT DENSITY=49,361 1180,774(100%)= 27.3
I I I F SIDEWALK FLAGPOLE 136.39' (27.3%>24%therefore High Density Project)
ul 1
I I L �.`
AREA POTABLE WATER IMPERVIOUS CALCULATIONS:
KSat-2
I B DG.FROM WELL MAX LOT COVERAGE FOR BLDGS&STRUCTURES
4 00 AC -40/
TORMWATER
POND SITE PROPERTY AREA
R10'
EXISTING IMPERVIOUS AREA OAC
PERMANENT €° -DEVELOPED IMPERVIOUS AREA -1.13AC
BMP EASEMENT Go =INCREASE IN IMPERVIOUS AREA 1.13 AC(28.3%)
`" GROUNDWATER
Ksat 1 c TOTAL GROSS BLDG.AREA 10,326 GSF(1 BLDG.)
g z WELL LOCATION
• o PARKING SUMMARY:
Do z I
SITE LIGHT REQUIRED VEHICLE SPCS Q_
I- POLE,TYP. UNLISTED USE.ASSUME 1.5x(8 BEDS)=12 SPACES MINIMUM REQUIRED Li z
�z
c PROVIDED ON-STREET 0 SPCS aJ
.18"VERT.CURB LANDSCAPE TYp) PROVIDED OFF-STREET 20 SPCS CLEARING LIMITS o LLJ 0-
E¢
40'FRONT /I!0'z70'SIGHT 10'x70'SIGHT SCREENING CDOT CLEAR ZONE PROVIDED TOTAL 20 SPCS TOTAL z LL_x
TRIANGLE,TYP. o ¢ �
24"RCP > SETBACK TRIANGLE,TYP. *« 24-FT FROM EDP(TYP) VEHICLE STD.90d PARKING DIMS =9'W x 19'L ¢ I~-I
-- - - - - - IN
V 566 50 Aiz wTO'SIGN - - ,° ew --- -- -- • LLJ J
1 CZ C CZZ CZ CZ A A
H O -mn-- ACCESSIBLE SPACES: m
REQUIRED: 1 TOTAL AND MUST BE VAN ACCESSIBLE TOTAL z
---x-24- x- PROVIDED:2 TOTAL(1 VAN ACCESSIBLE+1 STD.ACCESSIBLE)
CURB TRANSITION „�S,SEobEN • _J w 0
tO PARKING LOT LANDSCAPE ISLANDS: -O
~CUT cX •MIN.150 SF AND MIN.8-FT WIDE " z
SAWCUT PAVEMENT 1'FROM HAW CREEK RD (S 1104) EXISTING EDGE OF PAVEMENM T_B_M NAIL 6 Od z ¢ Q
Lu
EXISTING EDGE OF PAVEMENT N62"18'03"W g
N:4105D�¢- - - ---- ¢Q x
EL=582.41'
GENERAL NOTES x U)
ALL NOTES APPLY TO ALL DRAWINGS AND ALL TRADES. IT IS SLHETA RESPONSIBILITY OF ALL CONTRACTORS AND TRADES Q
-X --X -X -X- X- X X- - --X---X- TO COORDINATE THE INSTALLATION OF THEIR S,G ERA THE INSTALLATION OF WORK BY ALL OTHER CONTRACTORS N S
-X- TRADES.THE REQUIREMENTS OF THE DRAWINGS,GENERAL REQUIREMENTS AND ALL S RE OF THE CONTRACT DOCUMENTS
PRE EQUALLY BINDING ON ALL CONTRACTORS AND TRADES. EACH CONTRACTOR IS REQUIRED TO MAINTAIN FULL SETS
OF THE COW ACT DOCUMENTS FOR HIS EMPLOYEES USE ON THE PROJECT TO ASSURE THAT ALL WORK IS PROPERLY
24"RCP COORDINATEI AID INST 11 WITH THE WORK OF OTHER CONTRACTORS All TRADES
.
INV 565.35 NCDOT NOTE: ALL FIXED OBJECTS THAT ARE NOT CONSIDERED BREAKAWAY MUST 3\a ETP SCALE 1"=30' WHENEVER THERE ARE DISCREPANCIES BETWEEN DRAWINGS, OR BETWEEN THE DRAWINGS AND SPECIFICATIONS, OR Sheet Number
CONFLICTS WITHIN THE SPECIFICATIONS ANC/OR DRAWINGS. AND SUCH DISCREPANCY IS NOT CALLED TO THE
BE REMOVED FROM THE CLEAR RECOVERY ZONE(24-FEET FROM THE EDGE OF I MCNITECTS ATTENTION IN TIME To PERMIT CIARIFICATION BY ADDENDUM,THE CONTRACTOR SHALL BASE HIS BID UPON 00
EXISTING/FUTURE PAVEMENT AND/OR A MINIMUM 10-FEET BEHIND THE CURB). I 0 30' 60' WITH ATHINSG THE BETTER rvonNG SUCH GISECREPANCIES,WMG°RSHAALL SO FURNIDSHFOANDR.SINsraLSUBMIT H E-ERNQUALITY FOR
GREATER QUANTITY UNLESS OTHERWISE ORDERED IN WRITING.

' SOIL EVALUATION, FORM
Wood Soil Consulting, PLLC Job:VA XFf A 0 VI-b
620 Lee Fox Lane County: VNf-° P
Hillsborough, NC 27278 Date: 1- - 2
919-417-8027 Sheet: ( of 1
Structure/T Consistence/ Matrix Mottle Colors
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