WSCO_CHAT_WSWP boundary change request elev pts map_20230501

SURVEYOR'S CER77FICATION
1, Phillip W. Riley, certify that this project was completed under my
direct and responsible charge from an actual survey made under my
supervision; that this ground survey was performed at the 95 percent confidence
level (2 sigma) to meet Federal Geographic Data Committee Standards that the
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horizontal accuracy is 1: 10,000+, that the vertical accuracy is 1: 10,000+ and that
the original vertical data was obtained on May 3-5, 2021; that the survey was
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completed on May 19, 2021; that contours shown do not meet the stated standard; all elevations
are based on GPS Observations as noted below.
THE SURVEY CO-ORDINATES NOTED WERE DERIVED FROM GPS OBSERVATIONS BASED ON 714E FOLLOWING
1) CLASS OF SURVEY. CLASS C
MANNS CHAPEL RD
2) POS177ONAL ACCURACY. MAXIMUM RESIDUAL 0.098 FT(H) 0.125 FT(V)
3) TYPE OF GPS FIELD SURVEY. REAL 71ME KINEMATIC WS NCVRS
SITE
4) DATE OF SURVEY • MAY 3-5, 2021
5) DATUM/EPOCH: NAD '83/NAVD '88 (2011)
6) PUBLISHED/FIXED CONTROL USED. NONE
7) GEOID MODEL: G12B (NA VD '88)
8) COMBINED GRID FACTOR: a 99989978
9) UNITS. • US SURVEY FOOT
10) GPS INSTRUMENTATION: TRIMBLE R8
V l C l N l T Y M A P N T S
NOTES
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1. 714/S IS NOT A BOUNDARY SURVEY.
2. GROUND SHOTS TAKEN FOR GENERAL DRAINAGE PATTERNS ONLY- NOT A PRECISE
ONE FOOT CONTOUR INTERVAL
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J. HORIZONTAL GROUND DISTANCES SHOWN HEREON.
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LEGEND
CURB INLET
p CATCH BASIN
. . STORM DRAINAGE PIPE
D STORMWATER DIREC77ON OF FLOW
RIDGEL INE L OCA TION SURVEY
MANNS CHAPEL ROAD & US 15-501
PREPARED FOR
KIMLEY-HORN, INC.
30 15 0 30 60 90
RILEYSURVEYING, P.A.
BALDWIN TOWNSHIP
3326 DURHAM CHAPEL HILL BLVD. STE B-100
12118
CHA THAM COUNTY NC
SCALE IN FEET
SCALE. • 1 "= JO' MAY 19, 2021
DURHAM, N.C. 27707