J_2024 05 09_West Orange Stormwater Management Plan

APPENDIX n Limitations A. Subsurface Information Locations: The locations of the explorations were approximately determined by tape measurement from existing surface features shown on the plans provided to us. Elevations of the explorations were approximately determined by interpolation between contours shown on the plans provided to us. The locations and elevations of the explorations should be considered accurate only to the degree implied by the method used. Interface of Strata: The stratification lines shown on the individual logs of the subsurface explorations represent the approximate boundaries between soil types, and the transitions may be gradual. Field Logs/Final Logs: A field log was prepared for each exploration by a member of our staff. The field log contains factual information and interpretation of the soil conditions between samples. Our recommendations are based on the final logs as shown in this report and the information contained therein, and not on the field logs. The final logs represent our interpretation of the contents of the field logs, and the results of the laboratory observations and/or tests of the field samples. Water Levels: Water level readings have been made in the explorations at times and under conditions stated on the individual logs. These data have been reviewed and interpretations made in the text of this report. However, it must be noted that fluctuations in the level of the groundwater will occur due to variations in rainfall, temperature, and other factors. Pollution/Contamination: Unless specifically indicated to the contrary in this report, the scope of our services was limited only to investigation and evaluation of the geotechnical engineering aspects of the site conditions, and did not include any consideration of potential site pollution or contamination resulting from the presence of chemicals, metals, radioactive elements, etc. This report offers no facts or opinions related to potential pollution/contamination of the site. Environmental Considerations: Unless specifically indicated to the contrary in this report, this report does not address environmental considerations which may affect the site development, e.g., wetlands determinations, flora and fauna, wildlife, etc. The conclusions and recommendations of this report are not intended to supersede any environmental conditions which should be reflected in

.g., wetlands determinations, flora and fauna, wildlife, etc. The conclusions and recommendations of this report are not intended to supersede any environmental conditions which should be reflected in the site planning.

B. Applicability of Report This report has been prepared in accordance with generally accepted soils and foundation engineering practices for the exclusive use of PSE&G for specific application to the design of the proposed West Orange Switching Station Improvements. No other warranty, expressed or implied, is made. This report may be referred to in the project specifications for general information purposes only, but should not be used as the technical specifications for the work, as it was prepared for design purposes exclusively. C. Reinterpretation of Recommendations Change in Location or Nature of Facilities: In the event that any changes in the nature, design or location of the facilities are planned, the conclusions and recommendations contained in this report shall not be considered valid unless the changes are reviewed and conclusions of this report modified or verified in writing. Changed Conditions During Construction: The analyses and recommendations submitted in this report are based in part upon the data obtained from five widely-spaced test borings and two test pits performed for this study. The nature and extent of variations between the explorations may not become evident until construction. If variations then appear evident, it will be necessary to reevaluate the recommendations of this report. Changes in State-of-the-Art: The conclusions and recommendations contained in this report are based upon the applicable standards of our profession at the time this report was prepared. D. Use of Report by Prospective Bidders This soil and foundation engineering report was prepared for the project by Melick-Tully and Associates, P.C. for design purposes and may not be sufficient to prepare an accurate bid. Contractors utilizing the information in the report should do so with the express understanding that its scope was developed to address design considerations. Prospective bidders should obtain the owner's permission to perform whatever additional explorations or data gathering they deem necessary to prepare their bid accurately. E. Construction Observation We recommend that Melick-Tully and Associates, P.C. be retained to provide on-site soils engineering services during the earthwork construction and foundation phases of the work. This is to observe compliance with the design concepts and to allow changes in the event that subsurface

soils engineering services during the earthwork construction and foundation phases of the work. This is to observe compliance with the design concepts and to allow changes in the event that subsurface conditions differ from those anticipated prior to the start of construction.

APPENDIX m Post-Construction Settlement Calculations

5165-243*1 D PSEG West Orange Switching Station Improvements West Orange, Essex County, New Jersey Immediate Settlement Analysis Analysis description: Typical 4x4 footing with 4 ksf load Definition and entry of variables: B= least lateral dimension of footing (ft.) L= longest lateral dimension of footing (ft.) L/8 = a= 1.1 From Figure 3.23 in Das a r= M= g0= Es, 0.8 From Figure 3.23 in Das 0.3 Poisson's ratio c= N= Type of soil 1* 0.4-0.5 0.1-O.3 0.2-0.) 0.3 0.3S -0.1-1.00 0.3-0.4 0.1-0.4 (depends somewhat on Clay, saturated Clay, unsaluratcd Sandy clay Silt Sand, gravelly sand commonly used Rock intensity of contact pressure (ksf) 368 Values or value ranges for Poisson’s ratio n Young's Modulus (ksf) cohesion (psf) Avg SPT "N" value from borings 23 type of rock) 0.1-0.3 Loess fee Concrete 0.36 0.1 S 3.0 2.5 Sands: E, = 8N (tsf) __-------- 20 Clays (normally consolidated) a* E, = 250c to 500c 1.5 For circular foundation a =“ 1 a„ - 0.85 a, - 0.88 1.0 0.5 l 2 3 4 5 6 7 8 Clays (overconsolidated) Es = 750c to 1000c 10 L/B Average N for SBH-3 to ±11’ Ave N=23 (8)23=184 TSF Figure 3.23 Values of a, or.., and a,—Eqs. (3.62), (3.63), (3.66), (3.67) Calculate settlement Assume Rigid foundation AH = Sources: Values of a: Values of p: AH formula: Es formulas: 0.38" Principles of Foundation Engineering by Das, 2nd Edition, p. 157 Foundation Analysis & Design by Bowles, 4th Edition, p. 100 Principles of Foundation Engineering by Das, 2nd Edition, p. 156 Principles of Foundation Engineering by Das, 2nd Edition, p. 161

5165-243*1 D PSEG West Orange Switching Station Improvements West Orange, Essex County, New Jersey Immediate Settlement Analysis Analysis description: 12’x15' Transformer pad with 2.8 ksf load Definition and entry of variables: B= 12 least lateral dimension of footing (ft.) L= 15 longest lateral dimension of footing (ft.) 1.25 L7B = 1.2 a= From Figure 3.23 in Das ar = 0.9 M= 0.3 Poisson's ratio qa =» 2.8 intensity of contact pressure (ksf) E,. 448 Young's Modulus (ksf) 28 cohesion (psf) Avg SPT "N" value from borings c= N= Values or value ranges for Poisson’s ratio p Type of soil /< 0.4-0.5 0.1-0.3 0.2-0.3 0.3 0.35 -0.1-1.00 0.3-0.4 O.l-0.4 (depends somewhat Clay.saturated Clay, uusaturated Sandy clay Silt Sand, gravelly sand From Figure 3.23 in Das commonly used Rock type of rock) 0.1-0.3 0.36 0.15 Loess Ice Concrete 3.0 • 2.3 Sands: a^ E, = 8N (tsf) , 2.0 a Clays (normally consolidated) ^--------- E, = 250c to 500c 1.5 1.0 0.3 1 For circular foundation a =1 a„ - 0.85 a, - 0.88 *! 2 3 4 5 6 7 8 Clays (overconsolidated) E, = 750c to 1000c____________ Ave of N for SBH-3 to 25’ Ave N =30 10 LfB Figure 3.23 Values of a. a„. and o,—Eqs. (3.62), (3.63), (3.66), (3.87) (8)28=224 TSF Calculate settlement Assume rigid foundation AH' Sources: Values of a: Values of p: AH formula: Es formulas: 0.74 Principles of Foundation Engineering by Das, 2nd Edition, p. 157 Foundation Analysis & Design by Bowles, 4th Edition, p. 100 Principles of Foundation Engineering by Das, 2nd Edition, p. 156 Principles of Foundation Engineering by Das, 2nd Edition, p. 161

PSE&G West Orange Switching Station West Orange, NJ Stormwater Management Report Appendix B - Pre-Development Drainage Area Plan TRC Engineers, Inc. March 2012

10 / O' LEGEND ROSELAND-METUCHEN R/W LINE x 10— \ ADJOINING PROPERTY LINE x EASEMENT LINE x) 600 <3i/ I / NOTES: EXISTING MINOR CONTOUR LINE DISCHARGE !' I NJ STATE PLANE COORDINATE SYSTEM HORIZONTAL EXISTING MAJOR CONTOUR LINE EXISTING FENCE LINE LIMIT OF DISTURBANCE ll DATUM = NAD-83(2007) VERTICAL DATUM = So NAVD-88 DRAINAGE AREA <V 2. ONLY PSE&G LAND RIGHTS HAVE BEEN SURVEYED. EXISTING GRASS SURFACE N/ ADJOINING TAX LOTS ARE SHOWN FOR INFORMATION EX-DA 1 ONLY. DA EX EXISTING MEADOW SURFACE '■ I REFERENCES: 1. "X -v NJ o PHOTOGRAMMETRIC SURVEY BY PHOTO SCIENCE, INC.g WEST EXISTING BRUSH SURFACE N s\\\Y\ ■--59 S—~ \ x x CHESTER, PENNSYLVANIA, DATED MARCH 2009 THROUGH NOVEMBER 2010. EXISTING GRAVEL DRIVE SURFACE woobs EXISTING GRAVEL SURFACE RIGHT OF WAY INFORMATION BASED ON SURVEYS PREPARED J?' 2. THROUGH FEBRUARY 9, 2011, BY DRESDNFR R08IN, W^NE, NJ, ■■'.'3 ODS MASER CONSULTING P.A., HAMILTON, NJ, K|_LER & KIRKPATRICK, V i:5■V MORRIS PLAINS, NJ AND FRALINGER ENGINEERING, BRIDGETON EXISTING YARD STONE SURFACE r *»-' a T- ■x / IMPERVIOUS SURFACE (BUILDINGS & FOUNDATIONS) Op / V:' , / ■J EXISTING PAVED SURFACE EX DA <y, DRAINAGE INLET V/- J / / / / / / v-_- A PwR 5/ PRE-DEVELOPMENT SURFACF AREA COVER TYPE SUMMARY ^0L O' O / EX-DA.9B #\ fWR 60 l N :y r ' TW6 5/6-' ( -69T X EXIST BLDG .TO-BE REMOVED % J5S»" S0t / \ TO TWR REMQV Areas 5/5 FOUNDATIONS 5/ TWR 7 EX-DA 9A 4 /7 / J/ r / 0/ / / / v/ -y Containment 7 / f / /x / -_X stag-*' 3 0o0 / <&. 51,431 43,159 SF YARD STONE 131,550 SF SF MEADOW 26,372 SF GRASS 263,252 SF BRUSH 50,888 SF NON-CONTRIBUTORY 9,248 SF TOTAL AREA w/ NON-CONTRIBUTORY 689,140 SF w/o NON-CONTRIBUTORY 686,194 SF vs \ WAj; Line: 119,542 SF GRAVEL */ x / Area GRAVEL ROADS o N Drainage / /■<7 •N>A / / a V. NO\rN CONT3I3UTAR the PAVED ROADS, BUILDINGS & \: / / within IMPERVIOUS 0■ \ calculated / X / /- / / * % <7 x7 % EX V / / / / / RiBLTARY s ♦ / WOODS <7 x; / x X/ m >! \ so s 160 s of / APPLICANT: PSE&G / / y 80 PARK PLACE / / NEWARK, NJ 07102-4194 X, / { x>- \ A.. // t 9X/ > / ..-X 7 u / xO X, e, WEST ORANGE SWITCHING STATION / xG / X f r / x. TOWNSHIP OF WEST ORANGE, ESSEX COUNTY, NEW

LACE / / NEWARK, NJ 07102-4194 X, / { x>- \ A.. // t 9X/ > / ..-X 7 u / xO X, e, WEST ORANGE SWITCHING STATION / xG / X f r / x. TOWNSHIP OF WEST ORANGE, ESSEX COUNTY, NEW JERSEY A X O -819 / X D NO. REVISION DATE X, J TITLE: PRE-DEVELOPMENT SURFACE COVER TYPE PLAN <y X EX-DA P <-> n Certificate of Authorization #24GA28047100 / X 'u MILLBURN, NEW JERSEY 07041 PHONE NO. (973) 564-6006 FAX NO. (973)564-6131 DA / / "fix. lX 2 / EX y/ / / / NS' 57 E. WILLOW STREET / / v TRC Engineers Inc. X / C.A.O.D. UPDATE: A ■y EX-DA 3 n j ♦ A; / y AIN MEN! . T / o % -Tx ~\ 7 -620 BARRY J. SUTHERLAND, PE Project No.: 182614 Scale: AS SHOWN Drawn By: JS Date: 12/20/2011 Checked By: BJS Drawing No,: NEW JERSEY PROFESSIONAL ENGINEER 29135 FOR REVIEW ONLY NOT FOR CONSTRUCTION APPENDIX B-1 Date Copyright ©2011 10 $$$$$filerici<r,e$$$$$* PLOT DATE: KIdo(<;$$$• x /X <7 / / V / / X-