J_2024 05 09_West Orange Stormwater Management Plan

#200 #140 #100 #60 #40 #30 #20 #10 #4 3/8 in. ½ in. ¾ in. 1 in. 1½ in. 2 in. 3 in. 6 in. Gradation Curve(s) 100 90 80 PERCENT FINER 70 60 50 40 30 20 10 0 100 10 1 0.1 0.01 0.001 GRAIN SIZE - mm. % Cobbles 0.0 0.0 0.0 0.0 % Gravel Coarse Fine Coarse 2.0 1.5 5.8 0.3 % Sand Medium 13.7 3.9 14.8 7.1 % Fines Fine 32.3 22.8 29.9 24.6 Silt Clay 0.0 0.0 0.0 0.0 3.2 8.6 13.7 2.9 48.8 63.2 35.8 65.1 SOURCE SAMPLE NO. DEPTH (ft.) Material Description USCS SBH-4 S1 2 Fine to medium Sand, and Silt, trace fine Gravel (MC=11.3%) Fill SBH-4 S5A 8-10 Silty Clay, some f to m Sand, trace f Gravel (MC=21.5%) CL SBH-5 S3 4-6 Fine to coarse Sand, and Silt, little fine Gravel (MC=10.8%) Fill SBH-5 S5 8-10 Clayey Silt, some f to m Sand, trace f Gravel (MC=15.4%) ML SOIL DATA SYMBOL Melick-Tully & Associates a Division of GZA GeoEnvironmental, Inc. South Bound Brook, NJ Client: PSE&G Project: West Orange Switching Station Lifecycle Projet - West Orange, NJ Project No.: 26.0092704.00 Plate 8B

Summary of Chemical Testing and Soil Box Testing Proposed West Orange Switching Station Lifecycle Project West Orange, Essex County, New Jersey PSE&G Exploration Number SBH-1 SBH-1 SBH-3 SBH-3 SBH-3 SBH-4 SBH-4 SBH-4 Exploration Approximate Number Depth (ft.) SBH-1 1.5 SBH-2 2 SBH-5 3 Summary of Soil Box Tests Approximate Generalized Soil Description Depth (ft.) 3-5 Sandy Clayey Silt 9-11 Sandy Clayey Silt 1 Sandy Silt Fill 4-6 Sandy Clayey Silt Fill 8-10 Sandy Silty Clay 2 Silty Sand Fill 4-6 Sandy Clayey Silt Fill 8-10 Sandy Silty Clay Resistivity (ohm-cm) 5,960 3,640 18,500 8,940 6,010 15,300 10,900 1,540 Generalized Chloride Redox Electrical Sulfates Sulfides Soil Ion pH Potential Resistivity (ppm) (ppm) Description (ppm) (mV) (ohm-cm) Sandy Silt 99.4 5.30 54.4 ND 199 4,300 Fill Sandy Silt 38.8 5.58 90.2 ND 204 6,000 Fill Sandy Clayey Silt 4.12 3.44 34.9 ND 196 44,000 Fill *ND= Analyzed for but not detected MELICK-TULLY AND ASSOCIATES, a Division of GZA File No. 26.0092704.00 Plate 9

DESIGN FOUNDATION SUBGRADE LEVEL SUITABLE NATURAL BEARING STRATUM ALTERNATE MIN. LIMITS OF BOTTOM OF FOUNDATION EXCAVATIONS DETERMINED BY LEAN CONCRETE, FLOWABLE TYPE OF BACKFILL MATERIAL FILL OR STRUCTURAL BACKFILL B+1" STONE BACKFILL SUGGESTED FOUNDATION OVEREXCAVATION DETAIL NOT TO SCALE = Width of foundation. = Depth of overexcavation of unsuitable materials below bottom of foundation subgrade to surface of suitable bearing stratum. Lean Concrete: Minimum 2,000 psi. Stone Backfill: Clean 3/4 inch crushed stone or washed gravel; separate stone from adjacent soils on sides and bottom using filter fabric (Mirafi 140, or equivalent). Structural Fill Backfill: Approved granular soils spread in lifts on the order of 6 to 8 inches in loose thickness and compacted to at least 95 percent of maximum dry density as determined by the ASTM D1557 test procedure. Ny PLATE 10

APPENDIX | Geotherm Test Results

21239 FM529 Rd., Bldg. F Cypress, TX 77433 Tel: 281-985-9344 Fax: 832-427-1752 info@geothermusa.com http://www.geothermusa.com June 16, 2022 Melick Tully and Associates 117 Canal Road South Bound, NJ 08880 Attn: Chis McLaughlin, P.E. Re: Thermal Analysis of Native Soil Samples West Orange Switching Station – West Orange, NJ (Project No. 26009270400) The following is the report of thermal dryout characterization tests conducted on the five (5) tube samples of native soil from the referenced project sent to our laboratory. Thermal Resistivity Tests: The tube samples were tested ‘as received’. The tests were conducted in accordance with the IEEE standard 442-2017. The results are tabulated below and the thermal dryout curves are presented in Figures 1 to 3. Sample ID, Description, Thermal Resistivity, Moisture Cont ent and Density Sample ID Thermal Resistivity (°C-cm/W) Wet Dry Moisture Content (%) Sandy Loam (Fill) 114 304 9 88 8 Sandy Clay (Fill) 68 171 19 110 3 Silt Loam 65 182 16 109 3 Silt Loam 105 263 13 90 8 Silty Clay Loam 99 323 15 85 Depth (ft) Description (Melick Tully) 3 Dry Density (lb/ft 3 ) TP-101 TP-102 TP-103 Please contact us if you have any questions or if we can be of further assistance. Geotherm USA Nimesh Patel COOL SOLUTIONS FOR UNDERGROUND POWER CABLES THERMAL SURVEYS, CORRECTIVE BACKFILLS & INSTRUMENTATION Serving the electric power industry since 1978

=e Geotperm THERMAL DRYOUT CURVES 350 —___ @3 300 @s 250 200 \ 150 \ THERMAL RESISTIVITY (°C-cm/W) 100 50 0 5 10 15 20 25 30 35 MOISTURE CONTENT (% DRY WEIGHT) Melick Tully and Associates (Project No. 26009270400) West Orange Switching Station - West Orange, NJ Thermal Analysis of Native Soil Samples June 2022 Figure 1

=e Geotperm THERMAL DRYOUT CURVE 350 TP-102 @3 300 250 200 150 THERMAL RESISTIVITY (°C-cm/W) 100 50 0 5 10 15 20 25 30 35 MOISTURE CONTENT (% DRY WEIGHT) Melick Tully and Associates (Project No. 26009270400) West Orange Switching Station - West Orange, NJ Thermal Analysis of Native Soil Samples June 2022 Figure 2

=e Geotperm THERMAL DRYOUT CURVES 350 —___ @3 300 @s i 250 | ts — —— 200 150 THERMAL RESISTIVITY (°C-cm/W) 100 50 0 5 10 15 20 25 30 35 MOISTURE CONTENT (% DRY WEIGHT) Melick Tully and Associates (Project No. 26009270400) West Orange Switching Station - West Orange, NJ Thermal Analysis of Native Soil Samples June 2022 Figure 3

APPENDIX II Rock Core Photographs

Rock Core Photographs Proposed West Orange Switching Station Lifecycle Project West Orange, Essex County, New Jersey PSE&G Rock Piece Sent for Compression Testing Rock Core Box Key: Boring SBH-1 Run 1 – 15’-20’, REC: 95%, RQD: 53% Boring SBH-1 Run 2 – 20’-25’, REC: 100%, RQD: 68% Empty Empty GZA GeoEnvironmental Appendix I File No. 26.0092704.00