25 7 7 Perez 66 Whittlesey West Orange Engineering Plan

WHI TTLESEY MEET & MATCH EXISTING CONCRETE SIDEWALK AVENUE TO BE REMOVED 960 S.F. OF PROPOSED pe ADDITION & EXISTING ROOF AREA TO BE DIRECTED TO DRYWELL (SHADED AREA) PROPOSED 55 L.F. 4”6 SCH. 40 PVC ROOF LEADER COLLECTING RIDGE AVENUE PROPOSED PIPING @ 1.0% MIN. SLOPE AREA DRAIN TO BE CONNECTED TO FOOTING 1°26 oo Ww PROPOSED 8 L.F. 4”6 SCH. 40 PVC PIPE @ 1.0% MIN. SLOPE al PROPOSED (1) 7’6 (13.5' X 13.5' EXCAVATION) GROUND EL.=215.48 TOP OF DRYWELL=212.79 INV.(IN/OUT)=211.29 BOTTOM OF DRYWELL=208.12 BOTTOM OF EXCAVATION=207.45 | —, S END) SS prs av. =21 oe ble-O ADDITION FFE=218.83 | 1913.80 oe }~ 2 - a a] EXISTING WALL x TO BE REMOVED Sw & , IN 28°34 [E> 75.00 350 00° Bai | PROPOSED POPUP EMITTER \ -— J 5 88 EL.=212.90 |— oe “S00 | ale INV.=212.07 8 sh PROPOSED we ania? COVERED PORC QD PROPOSED 15 Lf. 4’ | th © FL 21k.55 a! SCH. 40 PVC OVERFLOW eS < 25.97" | PIPING @ 1.0% MIN. SLOPE|& je) je) js) ™ EXISTING CONCRETE WALK 30} FRONT YARD, SETBAFK a ACK —~ | |BE RECONSTRUCTED 5 Ye" Part #: 420 TECHNICAL SPECIFICATIONS 3” and 4” Pop-Up Drainage Emitter Load Recommendation Guide (8)#4 BARS AROUND OPENING PLAN VIEW Material: High Density Polypropylene (HDPE) er and drain pipe/fittings Flow Rate: 40 GPM k i a UV inhibitor Spring: Stainless Steel Spring Tension: 0.04 PSI or 1" water required to rise cap. — z "ere | | po 6 8 ® © pte" KH be © © © o RY oa Ga *A to © OG GO KI ow [Bde ewoweoe | be oe | To | ™ SECTION VIEW NOTES: = HS-20 LOAD RATED ~ CONCRETE 5,000 PSI @ 28 DAYS ~ REINFORCING: DETAILS FURNISHED UP 246 Main Street Butler, NJ.07405 NGL ‘973.838.3060 PEERLESS CONCRETE PRODUCTS CO. REQUEST Tales@peerlessconcretecom | www.peeriessconcrete.com ~ ONE PIECE UNIT ~ CAPACITY: 845 GALLONS/ 112 CUBIC FEET 4'-8" HI x 7-0" DIA. HEAVY DUTY SEEPAGE PIT = WEIGHT: 10,000 LBS.+/- ~ ADDITIONAL OPENING UPON REQUEST: CUSTOMER: = 24" x 48" (A) OPENING = 42" x 48" (B,£) OPENING - 48" ROUND OPENING (PROJECT: B-11 SCALE:N.T.S. Daves 1a7a02s [esta DOWNSPOUT FROM RAIN GUTTERS \ ~ \ ‘ADAPTER PVC. TEE SLOTTED CAP (RODENT SCREEN) FLAS BugeK (IN UNPAVED AREAS ONLY) SLOPE GROUND AWAY i FOUNDATION i pp TO or rvELL RRR NA 100.00’ [| —; | NOT TO SCALE EXISTING STEPS TO PROPOSED 84 L.F. 4”6 SCH. 40 10’ SIDA | 30’ REA { YARD ae | 24° A 46.88 EXISTING SHED TO BE REMOVED INTERLOCKING PAVERS W/ HAND TIGHT JOINTS COURSE SAND

—; | NOT TO SCALE EXISTING STEPS TO PROPOSED 84 L.F. 4”6 SCH. 40 10’ SIDA | 30’ REA { YARD ae | 24° A 46.88 EXISTING SHED TO BE REMOVED INTERLOCKING PAVERS W/ HAND TIGHT JOINTS COURSE SAND SETTING BED (CONCRETE/SAND MIXTURE) ——S 28°34'00” W RESET PAVERS 75.00: [DENSE GRADED AGGREGATE = 1/2" ASPHALT FIBER EXPANSION JOINT EVERY 10° (MAXIMUM) FINISHED GRADE Huey = TOOLED JOINT EVEY 5! RE-PAVING EDGE RESTRAINT 48” OR AS INDICATED ON THE ORAWNGS x Ns . all “4500 P.SI. CONCRETE x A 4 THICK TYPE 57 COMPACTED SUBGRADE ‘CRUSHED. STONE NY OR STRUCTURAL FILL YY, FESS ~ "\ rors To 8& REMOVED N.T.S NOT TO SCALE AS REQUIRED Hi! F_ GENERAL R IREMEN ZONE R-T (ONE & TWO FAMILY DWELLING) EXISTING USE: SINGLE FAMILY (PERMITTED) PROPOSED USE:MULTI-FAMILY DWELLING (NOT A PERMITTED)(V) REGULATION REQUIREMENT EXISTING PROPOSED MIN. LOT AREA 7,500 S.F. 7,500 S.F. 7,500 S.F. MIN. LOT AREA PER UNIT 7,500 _S.F. 7,500 S.F. 7,500 S.F. MIN. LOT WIDTH 75 75° 75° MIN. FRONT YARD 30’ 9.35'* 9.29°(V) MIN. SIDE YARD 10’ 25.97’ 25.97’ MIN. SIDE YARD OTHER 8 28.19 8.47' MIN. REAR YARD 30 46.88" 38.89 MAX. BUILDING COVERAGE 40% 20.8% 33.12% MAX. LOT COVERAGE 55% 62.8%" 73.81% V) MIN. FLOOR AREA PER UNIT 1,100 S.F. (1) > 1,100 S.F. > 1,100 S.F. MAX. NUMBER OF STORIES 2.5 = 2.5, MAX. BUILDING HEIGHT 35° = MATCH EXISTING ACCESSORY STRUCTURE MIN. DISTANCE FORM PRINCIPAL BUILDING 15’ 21.19 21.19 MAX. BUILDING HEIGHT 15’ = = MAX. NUMBER OF STORIES: 1.5 1 1 MAX. COVERAGE IN THE REAR YARD 33.33% 18.17% 18.57% NOTES: (1) TWO FAMILY DWELLING * —DENOTES EXISTING VIOLATION (v) —DENOTES VARIANCE REQUIRED PVC ROOF LEADER COLLECTING PIPING @ 3.3% MIN. SLOPE —— S 61°26’00”" E PARKING REQUIREMENTS PARKING REQUIREMENT: R.S.1.S.. MULTI-FAMILY: 2-BEDROOM: 2.0 SPACES PROPOSED: R.S.IS. MULTI-FAMILY: (3) 2-BEDROOM UNIT: 6 SPACES TOTAL SPACES REQUIRED TOTAL SPACES PROPOSED 6 SPACES 4 SPACES (INCLUDES 1 GARAGE SPACE) (VARIANCE REQUIRED) MEET EXISTING GRADE AT EXCAVATION EDGES PVC INSPECTION PORT (TYP.) FINISHED GRADE TOP OF DRYWELL 2.69" MIN. 4” SCH. 40 PVC i PIPE FROM ROOF LEADERS 3 | 2.5" CRUSHED STONE OR GRAVEL Ly tg” ator WRAPPED IN FILTER 4-8" 4-0 FABRIC (TYP.) ts =| L_—3'=3" MIN. = oN HOLE Ss . "= BOTTOM OF DRYWELL N\ sertou OF EXCAVATION NOTES: 1. USE (1) 7’ SEEPAGE PIT FROM PEERLESS CONCRETE PRODUCTS CO. (SHEET B—11 OF PRODUCT CATALOG) 2. EXPLORATORY SOIL

L_—3'=3" MIN. = oN HOLE Ss . "= BOTTOM OF DRYWELL N\ sertou OF EXCAVATION NOTES: 1. USE (1) 7’ SEEPAGE PIT FROM PEERLESS CONCRETE PRODUCTS CO. (SHEET B—11 OF PRODUCT CATALOG) 2. EXPLORATORY SOIL TEST PIT AND SOIL PERMEABILITY TESTING TO BE PERFORMED TO VERIFY ABSENCE OF GROUNDWATER WITHIN 2 FEET OF THE BOTTOM OF THE EXCAVATION. SOIL PERMEABILITY TEST RESULTS SHALL BE SUBMITTED TO THE TOWNSHIP ENGINEER FOR REVIEW AND APPROVAL PRIOR TO CONSTRUCTION. DRYWELLS MUST FULLY DRAIN WITHIN 72 HOURS OF A STORM EVENT. DRYWELL SYSTEM CROSS-SECTION NOT TO SCALE DRYWELL TANK ——— | (re) Drainage Requirement Total Existing On-Site Impervious Coverage = 4.710 s.f “Total Proposed On-Site Impervious Coverage = 5,536 sf. Total Net increase in On-Site impervious Coverage = 826 s 1. Proposed drywells to collect portion of roof area of proposed and existing dwelling for a total of = 9605 f ‘Stormwater, WHERE. 87 Inch = 100 Year Storm 0.54 = Change in Runoff Coefficent For HSG "C" (0.99-0.45) 19.2 Inch x 0.84 = 49 inch Over Surface (4S inches/12 inches/foot) x 960 s.t. = 392 CF. Drywell Sizing BR Zit [ i3.5in Excavation Width 135i Excavation Width 4.00 f. 467 ft VolDrywell = pi(ID/2)'2(H1) = 113/¢f VolBed = W, x Ws x abi cf VolDrywelkOD) = plOD/2)/"2H1) = VolStone =, VolBed-VolDrywell(OD) = 697 cf Valvoi St = 279 ct System Volume = VolDrywell+VolVoids = 392 cf Number of Drywells = 4 Total System Volume = 392/cf ]> 392 DRYWELL SIZING CALCULATION ROOF DRAIN FROM REAR OF THE DWELLING 7 vA 45° ELBOW / / = § GENERAL NOTES: 1. THIS DRAWING REFERENCES A BOUNDARY & TOPOGRAPHIC SURVEY PREPARED BY: BORRIE, McDONALD & WATSON 130 WASHINGTON STREET, BLOOMFIELD, NJ 07003 DATED 08/5/2024 2. THE PARCEL IS KNOWN AS LOT 60 IN BLOCK 129 AS SHOWN ON SHEET 49 OF THE TAX MAPS OF THE TOWNSHIP OF WEST ORANGE. 3. AREA OF PARCEL = 7,500 S.F. OR 0.17 ACRES 4. THE PARCELS ARE LOCATED ENTIRELY IN THE R-T ZONE AS SHOWN ON THE ZONING MAP OF THE TOWNSHIP OF WEST ORANGE. 5. THIS PARCEL MAY BE SUBJECT TO UNDERGROUND UTILITIES AND/OR EASEMENTS WHICH ARE NOT SHOWN. 6. IF THIS DOCUMENT DOES NOT CONTAIN A RAISED IMPRESSION SEAL OF THE PROFESSIONAL, IT IS NOT AN AUTHORIZED ORIGINAL AND MAY HAVE BEEN ALTERED. 7. NO DETERMINATION WAS MADE AS TO THE PRESENCE AND/OR NONEXISTENCE OF TOXIC WASTES. ALSO NO DETERMINATION OF DEPTH TO GROUND WATER WAS MADE. THE CLIENT SHOULD PURSUE THESE MATTERS

HAVE BEEN ALTERED. 7. NO DETERMINATION WAS MADE AS TO THE PRESENCE AND/OR NONEXISTENCE OF TOXIC WASTES. ALSO NO DETERMINATION OF DEPTH TO GROUND WATER WAS MADE. THE CLIENT SHOULD PURSUE THESE MATTERS AS ITEMS SEPARATE AND APART FROM THIS PLAN. 8. ELEVATIONS SHOWN HEREON ARE BASED . 9. DO NOT SCALE DRAWINGS FOR LOCATIONS OF ADJACENT STRUCTURES AND SURROUNDING PHYSICAL CONDITIONS. THESE ITEMS MAY BE SCHEMATIC ONLY EXCEPT WHERE DIMENSIONS ARE SHOWN THERETO. 10. THIS IS A GRADING PLAN AND UNLESS SPECIFICALLY NOTED ELSEWHERE HEREON IS NOT A SURVEY. 11. THIS PLAN HAS BEEN PREPARED FOR PURPOSES OF MUNICIPAL AND AGENCY REVIEW AND APPROVAL. THIS PLAN SHALL NOT BE UTILIZED AS CONSTRUCTION DOCUMENTS OR DIGITAL STAKEOUT UNTIL ALL CONDITIONS OF APPROVAL HAVE BEEN SATISFIED AND THE DRAWINGS MARKED "ISSUED FOR CONSTRUCTION AND DIGITAL STAKEOUT”. 12. EXISTING UTILITY INFORMATION SHOWN HEREON HAS BEEN COLLECTED FROM VARIOUS SOURCES AND IS NOT GUARANTEED AS TO ACCURACY AND COMPLETENESS. THE CONTRACTOR SHALL VERIFY ALL UTILITY INFORMATION TO HIS SATISFACTION PRIOR TO COMMENCEMENT OF ANY WORK. THE CONTRACTOR SHALL PERFORM TEST PITS WHERE EXISTING UTILITIES ARE TO BE CROSSED. TEST PIT INFORMATION SHALL BE GIVEN TO THE ENGINEER PRIOR TO CONSTRUCTION TO PERMIT ADJUSTMENTS AS MAY BE REQUIRED TO AVOID CONFLICTS. 13. CONTRACTOR SHALL NOTIFY THE UNDERSIGNED PROFESSIONAL IMMEDIATELY IF ANY FIELD CONDITIONS ENCOUNTERED DIFFER FROM THOSE SHOWN HEREON. 14, ALL PROPOSED UTILITIES SHALL BE INSTALLED UNDERGROUND. 15. ALL MATERIAL, WORKMANSHIP AND CONSTRUCTION FOR SITE IMPROVEMENTS SHOWN HEREON SHALL BE IN ACCORDANCE WITH: — NuDOT "STANDARD SPECIFICATIONS FOR ROAD AND BRIDGE CONSTRUCTION”, AS CURRENTLY AMENDED. — CURRENT PREVAILING MUNICIPAL AND/OR COUNTY SPECIFICATIONS, STANDARDS, AND REQUIREMENTS. — CURRENT PREVAILING UTILITY COMPANY/AUTHORITY SPECIFICATIONS, STANDARDS, AND REQUIREMENTS. 16. EXISTING WATER, GAS & SEWER CONNECTIONS TO BE UTILIZED IF POSSIBLE. CONTRACTOR TO COORDINATE WITH LOCAL UTILITY. ANY UTILITY DISCONNECTS TO BE COORDINATED DIRECTLY BY THE CONTRACTOR. 17. PARCEL IS LOCATED IN ZONE X (AREAS OUTSIDE THE 0.2% ANNUAL CHANCE FLOOD PLAIN). AS PER FIRM PANEL NO. 111 OF 200 MAP No. 34013C0094F DATED JUNE 4, 2007. 18. NO WETLANDS EXIST ON SITE PER NJ—GEOWEB ONLINE SERVICE OF THE NJDEP. 19. EXISTING IMPERVIOUS COVERAGE = 4,710 S.F. PROPOSED IMPERVIOUS COVERAGE

111 OF 200 MAP No. 34013C0094F DATED JUNE 4, 2007. 18. NO WETLANDS EXIST ON SITE PER NJ—GEOWEB ONLINE SERVICE OF THE NJDEP. 19. EXISTING IMPERVIOUS COVERAGE = 4,710 S.F. PROPOSED IMPERVIOUS COVERAGE =5,536 S.F. TOTAL NET INCREASE =826 S.F. GRAPHIC SCALE 10 0 5 10 20 40 a (IN FEET ) 1 inch = 10 ft. PROPOSED LEGEND |_fie|__ ca — PROPOSED CONTOUR — PROPOSED SPOT ELEVATION — NIPPLE 4°@PVC SCH 40 PIPE - _ 4 GRADING PLAN 66_ WHITTLESEY AVE TAX LOT 60 BLOCK 129 TOWNSHIP _OF WEST ORANGE, ESSEX COUNTY, NEW JERSEY \ 45° WYE NN ROOF DRAIN FROM FRONT OF THE DWELLING DRYWELL LEKA ASSOCIATES, B.A, NOT TO SCALE 328 Park Avenue, Scotch Plains, Engineers e Surveyors e Planners N.J. 07076 908-322-2030 REVISIONS: 7/7/2025 — REVISED PER NEW ARCHITECTURAL PLANS Jah Dod. JOSEPH’N. /BACHI, P.E., C.M.E. PROFESSIONAL ENGINEER N.J. LICENSE NO. 24GE05325200 Job No. 850323 Date 11/4/2024 Scale 1” Drawn EF FILE Sheet 1 of 1 Map No.