O30 Princeton Hydro Report Dated 9 3 25

West Essex Highlands Review West Orange, NJ Permit No. 722-04-0001.1 LUP230001 April 2025 eu te S= 10% ‘TG:568.2 OUTLET STRUCTURE (#9) 4. WEIR: 564.0, 3” ORIFICE: 563.0 INV(12" IN}: 562.8 4NV(15" IN): 556,0 555.25 ‘ -109/ SAN-MH3 ~ /RIM:566.76 INV. IN: 564.90 INYOUT: 564.80 15 Le 15" SOLID HDPE —~~ 7" artnet S$=3.1% Ser eens INV: 562.0 STORAGE & OUTLET #9 SECTION VIEW ALF 12" POROUS HOPE ——_ MS S=0% SOR CONSULTING TEST PIT LOG TESTPITNO. TP-46 ENGINEERS, INC. CLIENT = Garden Homes/ West Essex Highlands, Inc. [GSE TERLEVEL PROJECT ‘Stormwater Management System [DATE LOCATION = ‘West Orange, New Jersey |JOB NO. 245-02 [REPORT NO. FET DEPTH pensity | MOISTURE GROUND SURFACE, REMARKS. : [TopsoilVVegetation 1 13 Soft Moist 2 |Gray to Reddish Brown Ciayey Silt, little coarse to fine Sand, little coarse to fine Gravel (Ciay Loam) : 2.5" Light Brown Clayey Silt, little coarse to fine Sand, kluittle coarse to fine Gravel 4 |(Ciay Loam) “01 5 ‘Stiff Reddish Brown coarse to fine Sand, some Silt, and medium to fine Gravel (Sandy Loam) ‘ Permeabiity @ 8° K=0.99 rv (K2) Figure 3: Cross section at PP9, Location of TP-46, TP-46 Soil Profile. 2.3 SOIL TESTING REQUIREMENTS FOR BMPS The New Jersey BMP Manual provides guidance on how many test pits are required based on the size of the basin in Subsection 2a of Chapter 12. The soil testing allows a designer to understand how the soil will respond to rainfall, including the elevation of the SHWT and a Princeton Hydro, LLC Page | 10