SW6130203_Design Calculations_20240423

INFILTRATION BASIN
Project# O'REILLY AUTO PARTS AREA INFILTRATION BASIN
Date : 4/22/2024
Evaluation By: JEH
DESIGN STORM: 1"
OBJECTIVE: PROVIDE STAGE STORAGE FOR TREATMENT PORTION OF INFILTRATION BASIN ONLY.
GIVEN:
Location: Buffalo Lakes Area,Spout Springs, NC
Watershed Area: 8.6
Accum.Storage
Contour(ft-MSL): Area (sf) Inc.Vol (cu.ft) (cu.ft) Stage(ft) In Z In S Est.Stage(ft)
420.00 11,373 0,000 0,000 0.00 0.000 0.000 0.000 _ TREATMENT VOLUME
421.0 12,706 12,040 12,040 1.00 0.000 9.396 1.000
422.0 14,102 13,404 25,444 2.00 0.693 10.144 2.000 ONLY
In intercept= 9.3959 Ks= 12,040
exponent= 1.0795 b= 1.08
R-sq= 1.000000
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HILLIARD ENGINEERING, PLLC •• _ SSio /-9% ':-
3417 Winterwind Circle,Sanford, NC 27330
[phone] SEAL
i 035670
NC License No.: P-0836 ;
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Digitally signed by Jarrod E.
Jarrod E.
Hilliard,PE,CFM
H i 11 i a rd, PE, CFM Date:2024.04.23 12:27:20
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