SW1240401_Soils/Geotechnical Report_20240424

BLD NELL
LAMMONS
NE ENEINEERINS
April 17, 2024
Mr.Hunter Barnett
Vannoy Construction
1500 Ridgefield Blvd
Asheville,NC 28759
Subject: Report of Infiltration Test
Blackwell Hall Additions--Mars Hill University
120 Cascade Street
Mars Hill,North Carolina
BLE Job No.J24-15523-04
Mr.Barnett:
Bunnell-Lammons Engineering, Incorporated (BLE) representatives were present at the Blackwell Hall
Additions at the Mars Hill University in Mars Hill,North Carolina to perform a double ring infiltration test
(ASTM D3385-09) within the proposed location of the Stormtech system. The infiltration tests were
performed by our Mr. Colm O'Doherty, P.E. on April 16, 2024. The testing location was established by
members of Vannoy Construction in the northeast corner of the site in accordance with drawing C-04 dated
August 17,2023,provided by Davis Civil Solutions.A seven-foot-deep test pit was completed at the testing
location in order to match the bottom excavation of the proposed Stormtech system.The data and associated
graphical results are attached. Based on the results of the testing the stormwater retention area would be
expected to exhibit an infiltration rate of approximately 0.06 inches per hour.
We appreciate the opportunity to provide our professional services on this project. Please do not hesitate
to ask if you have any questions.
Respectfully,
BUNNELL LAMMONS ENGINEERING,INC.
FIRM REGISTRATION#C-1538
Cohn O'Doherty,P.E. _ James J.Belgeri,P.E.
Project Engineer Senior Engineer
Attachments: Infiltration Test Data
Site Civil Drawing C-04

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Project Name Blackwell Hall Additions Project# 15523-04 Inner Ring Pen, 4 A_Inner 113.10 in2
Tested By COD Date 4/16/2024 Outer Ring Pen 4 A_Outer 339.29 in2
R_Inner 6 in.
R_Outer 12 in.
Elapsed Flow Readings Incremental
Trial No. Time{hr:min} Time: inner Outer Liquid Infiltration Rate
0/total Reading Flow Reading Flow Temp. Inner Outer Ground Temp and
(min) (in) (inA3) (in) (inA3) (°F) (in/hr) (in/hr) Weather Conditions
S 14:15 7.25 9.125
1 E 14:30 15.0 7.25 0.00 9.125 0.00 69 0.00 0.00 Dry and 63°F
2 S 14:30 15.0 7.25 9.125
E 14:45 7.375 14.14 9.25 42.41 69 0.50 0.50 Dry and 63°F
S 14:45 7.375 9.25
3 E 15:00 15.0 7.5 14.14 9.375 42.41 70 0.50 0.50 Dry and 64°F
S 15:00 7.5 9.375
4 E 15:15 15.0 7.563 7.13 9,4375 21.21 71 0.25 0.25 Dry and 66°F
5 S 15:15 30.0 7.563 9.438
E 15:45 7.563 0.00 9.5 21.04 71 0.00 0.12 Dry and 66°F
S 15:45 7.563 9.5
6 E 16:15 30.0 7.563 0,00 9.5 0.00 71 0.00 0.00 Dry and 66°F
7 S 16:15 60.0 7.563 9.5
E 17:15 7.625 7.01 9.625 42.41 72 0.06 0.13 Dry and 65°F
S 17:15 7.625 9.625
8 E 18:15 60.0 7.6875 7.07 9.6875 21.21 72 0.06 0.06 Dry and 65°F

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