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HomeMy WebLinkAbout20180348 15.040.1 ExcelsiorParkPhase2_L-3_GradingDrainagePlan-L-3.0GRADING NOTES 1. EXISTING BASE INFORMATION DERIVED FROM FIELD SURVEY DATED 04/28/15 PERFORMED BY THOMPSON FLEMING LAND SURVEYORS P.C. 2. ALL PROPOSED GRADES SHALL BE SET IN THE FIELD BY A NEW YORK STATE LICENSED LAND SURVEYOR. 3. PITCH EVENLY BETWEEN SPOT GRADES. ALL PAVED AREAS MUST PITCH TO DRAIN AT A MINIMUM SLOPE OF ONE-EIGHTH INCH (1/8") PER FOOT. MAXIMUM CROSSPITCH OF ALL SIDEWALKS IS 25. ANY DISCREPANCIES NOT ALLOWING THIS TO OCCUR SHALL BE REPORTED TO THE OWNER'S REPRESENTATIVE PRIOR TO CONTINUING WORK. 4. WALKS SHALL NOT EXCEED 1 IN 20 SLOPE LONGITUDINALLY. RAMPS SHALL NOT EXCEED 1 IN 12 OR 30' IN LENGTH. ANY DISCREPANCIES NOT ALLOWING THIS TO OCCUR SHALL BE REPORTED TO THE OWNER'S REPRESENTATIVE PRIOR TO CONTINUING WORK. MAXIMUM CROSSPITCH OF ALL SIDEWALKS IS 2%. 5. ALL PROPOSED TOP OF VERTICAL CURB ELEVATIONS ARE SIX INCHES (6") ABOVE BOTTOM OF CURB UNLESS SHOWN OTHERWISE. 6. WHERE NEW PAVING MEETS EXISTING PAVING, NEW PAVING SHALL MEET THE LINE AND GRADE OF THE EXISTING PAVING WITH NEW. 7. EXCAVATION REQUIRED WITHIN 3 FEET OF EXISTING UTILITY LINE SHALL BE DONE BY HAND. CONTRACTOR SHALL REPAIR ANY DAMAGE TO EXISTING UTILITY LINES OR STRUCTURES INCURRED DURING CONSTRUCTION OPERATIONS AT NO ADDITIONAL COST TO OWNER. 8. ALL AREAS REQUIRING FILL SHALL BE BROUGHT TO GRADE REQUIRED IN 6" MAXIMUM COMPACTED LIFTS. GENERAL FILL SHALL BE FREE OF DELETERIOUS MATERIAL, CONTAIN NO GRAVEL LARGER THAN 2", AND SHALL BE COMPACTED IN AN APPROVED MANNER. 9. GRADE AREAS ADJACENT TO BUILDING LINES TO DRAIN AWAY FROM STRUCTURE AND PREVENT PONDING. FINISH SURFACES SHALL BE FREE FROM IRREGULAR SURFACE CHANGES. 10. EXCAVATION REQUIRED WITHIN DRIP LINE OF TREES DESIGNATED TO REMAIN SHALL BE DONE BY HAND. PLANT MATERIALS DAMAGED BY CONTRACTOR SHALL BE REPLACED IN KIND. 11. SLOPE SIDES OF EXCAVATIONS TO COMPLY WITH LOCAL CODES AND ORDINANCES HAVING JURISDICTION AND OSHA REGULATIONS. MAINTAIN SIDE SLOPES OF EXCAVATIONS IN A SAFE CONDITION UNTIL COMPLETION OF BACKFILLING. 12. THE GENERAL CONTRACTOR SHALL MAINTAIN OR ADJUST TO NEW FINISH GRADE AS NECESSARY ALL UTILITY AND SITE STRUCTURES SUCH AS LIGHT POLES, SIGN POLES, MANHOLES, CATCH BASINS, HAND HOLES, WATER AND GAS GATES, HYDRANTS, ETC., FROM MAINTAINED UTILITY AND SITE SYSTEMS UNLESS OTHERWISE NOTED ON THE UTILITY DRAWINGS OR AS DIRECTED BY THE OWNER'S REPRESENTATIVE. 13. CONTRACTOR SHALL BLEND NEW EARTHWORK SMOOTHLY INTO EXISTING, PROVIDING VERTICAL CURVES OR ROUNDINGS AT ALL TOP AND BOTTOM OF SLOPES. 14. CONTRACTOR SHALL MAINTAIN THE INTEGRITY OF THE EXISTING DRAINAGE SYSTEM AT ALL TIMES. DURING EARTHWORK OPERATIONS, DRAINAGE OF THE SITE AND ADJACENT AREAS SHALL BE MAINTAINED CONTINUOUSLY TO PREVENT EROSION OR DAMAGE RESULTING FROM CONCENTRATED RUN-OFF. WHEN IT IS NECESSARY TO INTERRUPT THE EXISTING DRAINAGE PATTERNS AND/OR UTILITIES, PROVIDE TEMPORARY FACILITIES UNTIL WORK IS PERMANENTLY STABILIZED AND APPROVED BY OWNER'S REPRESENTATIVE. 15. CONTRACTOR SHALL ESTABLISH PERMANENT SECONDARY BENCHMARKS PRIOR TO THE START OF CONSTRUCTION. ALL SECONDARY BENCHMARKS SHALL BE SO LOCATED THAT THEY WILL NOT BE DISTURBED BY CONSTRUCTION. 16. UNDERGROUND DETENTION/INFILTRATION SYSTEMS AND CONNECTING PIPING ARE TO BE INSTALLED TO HANDLE MSHTO H-20 LOAD REQUIREMENTS. TEST PIT LOCATIONS TEST PITS WITNESSED BY ROB FRASER FROM THE LA GROUP ON AUGUST 8, 2014. TEST PIT 1 0"- 6" 10 YR 4/4 FINE SANDY LOAM, MANY FINE ROOTS 6"- 16" 10 YR 4/3 FINE SANDY LOAM, 16" - 24" 2.5 Y 2.5/1 VERY FINE LOAMY SAND, WEAK BLOCKY STRUCTURE 24" - 54" 2.5 Y 2.5/1 FINE SANDY LOAM, DECOMPOSED ORGANIC MATERIAL, MANY MEDIUM ROOTS THAT ARE DECOMPOSING 54" - 144" 2.5 Y 4/4 FINE SANDY LOAM, PROMINENT MOTTLES, STRONG SEEPS AT 120" UDORTHENTS / FILL MATERIAL 0 - 24" SEASONAL HIGH WATER TABLE: 54" GROUND WATER: 120" CONSISTENT WITH WAREHAM SOIL SERIES, HYDROLOGIC GROUP C FALLING HEAD PERMEABILITY TEST AT 24" 2.6 IN/HR FALLING HEAD PERMEABILITY TEST AT 72" 2.9 IN/HR TEST PIT 2 0"- 4" 10 YR 3/2 FINE SANDY LOAM, MANY FINE ROOTS 4"- 13" 10 YR 4/4 FINE SANDY LOAM, 13" - 56" 10 YR 4/1 FINE SANDY LOAM, WEAK BLOCKY STRUCTURE 56" - 134" 10 YR 4/1 FINE SANDY LOAM WITH PROMINENT MOTTLES, STRONG SEEPS AT 120" SEASONAL HIGH WATER TABLE: 56" GROUND WATER: 120" CONSISTENT WITH WAREHAM SOIL SERIES, HYDROLOGIC GROUP C FALLING HEAD PERMEABILITY TEST AT 56" 3.2 IN/HR TEST PIT 3 0"- 24" 10 YR 4/4 FINE SANDY LOAM, MANY FINE ROOTS 24" - 26" 10 YR 3/2 DECOMPOSED ORGANIC MATERIAL 26" - 32" 2.5 Y 5/4 FINE SANDY LOAM 32" - 84" 10 YR 4/4 FINE SANDY LOAM 84" - 94" 2.5 Y 4/1 FINE SANDY LOAM WITH MANY PROMINENT MOTTLES, MANY MEDIUM DECOMPOSING ROOTS 94" - 120" 2.5 Y 2.5/1 MUCKY LOAMY FINE SAND UDORTHENTS / FILL MATERIAL 0 - 32" SEASONAL HIGH WATER TABLE: 84" GROUND WATER: 94" CONSISTENT WITH WAREHAM SOIL SERIES, HYDROLOGIC GROUP C FALLING HEAD PERMEABILITY TEST AT 32" 120 IN/HR TEST PIT 4 0"- 14" 10 YR 4/4 FINE SANDY LOAM, FINE TO MEDIUM ROOTS 14"- 60" 10 YR 4/3 FINE SANDY LOAM WITH DECOMPOSED ORGANIC INCLUSIONS 60" - 80" 2.5 Y 2.5/1 MUCKY LOAMY FINE SAND 80" - 120" 2.5 Y 4/1 VERY FINE SANDY LOAM WITH MANY PROMINENT MOTTLES SEASONAL HIGH WATER TABLE: 60" GROUND WATER: > 120" CONSISTENT WITH WAREHAM SOIL SERIES, HYDROLOGIC GROUP C FALLING HEAD PERMEABILITY TEST AT 32" 120 IN/HR TEST PIT 5 0"- 4" 10 YR 3/2 FINE SANDY LOAM, FINE ROOTS 4"- 12" 10YR 3/4 FINE SANDY LOAM, MANY FINE AND MEDIUM ROOTS 12" - 36" 10 YR 5/8 VERY FINE SANDY LOAM, LOOSE SINGLE GRAIN SAND 36" - 84" 10 YR 4/3 FINE SANDY LOAM, WEAK BLOCKY STRUCTURE 84" - 132" 10 YR 4/2 SATURATED FINE SANDY LOAM WITH PROMINENT MOTTLES, SEEPS AT 120" SEASONAL HIGH WATER TABLE: 84" GROUND WATER: 120" CONSISTENT WITH WINDSOR SOIL SERIES, HYDROLOGIC GROUP A FALLING HEAD PERMEABILITY TEST AT 42" 27 IN/HR TEST PIT 6 WITNESSED BY DENTE ENGINEERING ON MAY 29,2015 TEST PIT 6 0"- 6" TOPSOIL AND ROOTS 6"- 66" DARK BROWN/BROWN F -M SAND AND TOPSOIL, WITH ROOTS 66"' - 84" BROWN/ORANGE/TAN F -M SAND, TRACE SILT 84" - 120" LIGHT GRAY F -M SAND WITH BROWN MOTTLING 120"-126" GRAY F -M SAND, TRACE SILT SEASONAL HIGH WATER TABLE: 84" FALLING HEAD PERMEABILITY TEST: 12 IN/HR I\' \ \ 300 29 298 11 A 296 OUTLET CONTROL STRUCTURE (OCS-3) RIM: 292.20' INV IN: 286.83' INV OUT: 286.83' LIMITS OF DISTURBANCE APPROX: 2.2 ACRES UNDERGROUND INFILTRATION CHAMBERS #2 294 DIVERSION STRUCTURE #1 (DS -1) RIM: 292.95' INV IN: 287.33' INV OUT (4 286.83' CB -6 RIM: 293.00' INV IN(E): 288.74' INV IN(S): 289.00' INV OUT (DS -1): 286.83' TP-ItIV OUT (CHAMBERS): 286. CB -7 RIM: 289.50' INV IN: 286.20' INV OUT (5): 285.00' DIVERSION STRUCTVRE #2- (DS -2) RIM: 289.80' V\1V IN: 285.00' FILTRATION C AMBERS #1 OUTLET CONTROL STRUCTURE (OCS-1) RIM: 290.00' INV IN(E): 287.00' INV OUT: 282.00' 55 LF 12" HDPE © 7.3% STONE OUTLET APRON INV OUT: 278.00' TC 294.70 BC 294.20 291.1 6" 2.0% 90 1 5% HDPE 2.0% TC 293.9G- WII=MMW Ntimmon=icB_5 MIEPTIMIr EMI 291.0 TC 293.75 BW: 286. BC 293.25 IRNIMv: 209u2T;6288'9.38, 128 LF 12" HDPE 0.5% 1.5% JHIN 6" PE 2.0% EXISTING 24" CULERT INV IN: 271.55' INV OUT: 271.20' TW 291.5 TW: 253.0 GFE= GFE= 288.75 288.75 288.75 288.75 FFE = 294.7 gm G TP -2 16 LF 6" HDPE 2.0% TEST PITS WITNESSED BY ROB FRASER AND DOUG HELLER FROM THE LA GROUP ON NOVEMBER 20, 2015. TEST PIT 1A 0"- 8" TOPSOIL 8"- 34" 10 YR 5/3 SAND, LOOSE, ROOTS TILL 34" 34" - 70" 10 YR 4/2 SAND, LOOSE SEASONAL HIGH WATER TABLE: 70" GROUNDWATER: >90" FALLING HEAD PERMEABILITY TEST AT 30" TIME DEPTH 5 7 9 11 8-3/4" 10-5/8" 10-7/8" TEST PIT 2A 0"- 7" TOPSOIL 7"- 36" 10 YR 5/6 SILTY SAND, LOOSE, ROOTS SEASONAL HIGH WATER TABLE: 48" GROUNDWATER: >72" FALLING HEAD PERMEABILITY TEST AT 30" 00:02:05, 00:03:20, 00:03:22, 00:04:06, 00:04:38, 00:05:08, 00:04:33, 00:04:59 00:05:06, TEST PIT 3A 0"- 6" 10 YR 3/2 FINE SANDY LOAM, MANY FINE AND MEDIUM ROOTS 6"- 36" 10 YR 4/6 FINE SANDY LOAM, MANY FINE AND MEDIUM ROOTS 36" - 96" 10 YR 4/2 VERY FINE SANDY LOAM, WEAK BLOCKY STRUCTURE, 10 YR 5/6 MOTTLES SEASONAL HIGH WATER TABLE: 48" GROUNDWATER: > 72" FALLING HEAD PERMEABILITY TEST AT 20 INCHES 00:01:18, 00:01:28, 00:01:13, 00:01:26, 00:01:48, 00:01:38, 00:01:41, 00:01:17 - UD 394.83 320 ST LEGEND ST UD UD PROPOSED SPOT ELEVATION PROPOSED CONTOUR LINE EXISTING CONTOUR LINE EXISTING STORM SEWER LINE EXISTING STORM CATCH BASIN EXISTING STORM MANHOLE TEST PIT STORM DRAIN UNDER DRAIN LINE STORM SEWER CATCH BASIN STORM SEWER MANHOLE LIMITS OF DISTURBANCE PROPERTY LINE 20 LF HDPE 8 LF OUTLET CONTROL ST CTURE 50. Ocy TYR INV IN(S): 274.43' INV IN(UD): 274.65' INV OUT: 274.30' CB -3 RIM: 286.47' I INV IN(N): 282.40' INV OUT: 281.80' YD -1 OUT: 282.8 32 LF HDPE CD 1.0% 4 LF 12" HDPE 0.0% 58 LF 12" HDPE 1.07 NDERGROUND SAND FILTER 30 LF 12" HDPE CD 1.0% CB -1 RIM: 284.30' INV IN: 280.25' INV OUT: 280.15' 00 90 LF 12" 287 277- CABLE BOX UNDERGROUND DETENTION SYSTEM (3) 100' ROWS OF 48" PIPE TOP OF PIPES: 278.75' BOTTOM OF PIPES: 274.75' SA FAA RIM: 285.75' INV IN: 281.25' INV OUT: 281.15' 289 SA SA 0 / 288 ONS PART PHASE 2 AR • 27 tSA 27 3 / SA SA sA SA SA Aft ST7 GRAPHIC SCALE 30 0 15 30 60 1 inch = 30 feet Planning Board #15.040 Approval Approved under authority of a resolution adopted by the Planning Board of the City of Saratoga Springs. Chairperson Date Signed The LA GROUP Landscape Architecture & Engineering P.C. People. Purpose. Place. 40 Long Alley p: 518-587-8100 Saratoga Springs f 518-587-0180 NY 12866 www.thelagroup.com Unauthorized alteration or addition to this document is a violation of Section 7209 of the New York State Education Law. 0 the LA Group 2014 Prepared for Excelsior Park, LLC 563 North Broadway, Saratoga Springs, N.Y. 12866 Project Title: Excelsior Park, Phase 2A Excelsior Avenue, Saratoga Springs, NY 12866 Project No.: 201540 Design: BCS Drawn: DBH Date: 09/09/2015 Scale: Rev: Description: Date: 1 CHAZEN COMMENTS 07/27/201( 2 CHAZEN COMMENTS 08/31/2011 3 CITY COMMENTS 11/17/2011 4 CITY COMMENTS 01/25/201- 5 CITY COMMENTS 03/28/201- 6 CLIENT COMMENTS 08/15/201- 7 BUILDING SHIFT 04/13/20E Drawing Title GRADING & DRAINAGE PLAN Drawing No.