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2019-06-04 Stormwater Report (Part 2) 05/07/19
Ab 19R '..l J EE 4ifvG:R tGNs.O/r117Rtryy Af hr CFelll F� Fij, _ J -1P7.B-CO56-QGOO.P -]r,.y yR. .i<•'� GIs ,� f,r- 6 exz i A-23,S5:SF is ._. lie uA ! ♦a� O _. _ I i � `4;'4 �ua•s4�Iy�1� :.c`a� ——T.::a�^Sri.m w+r. I.,x ;,..r�� v„ _ r l.:,c '� =w4r c �`.'.,..-��.�•.`,'--'�: _ :.-...s--:.,='� .—�-•�+ ---`try=—�c�-:---z-- I ]} TURNPIKE STREET c SCALE: 1 "=.50' 0 25 50 100 200 SUBCATCHMENT 25 TURNPIKE STREET NORTH ANDOVER , MASSACHUSETTS i I I 4S Canopy Roof Sis3 � ......� Turnpike Street S Canopy (-1s) E2R. Catch Basin Subcatchmont 1 2S Subcatchment 2 Bobcat lReach on Link Drainage Diagram iorTt�rnpike-Post-REVf \ Prepared by LandPtex,LLG WydroCADO 7.10 On 003667 O 2005 HydroCAD Software S❑lotions LLC i e i i0" Turnpike a Post-REV1 Type 11124-hr 2-Year aalnfall=3. Prepared by LandP[ex, LLC Page 2 H droCAD®7.10 sln 003867 O 2005 H droCAD Software Solutions LLC Time span=5,00-20.00 hrs, dt=0.05 hrs, 301 points Runoff by SCS TR-20 method, UH=SCS Reach routing by Dyn-Star-Ind method - Pond routing by Dyn-Star-Ind method Subcatchment 1S: Subcatchment 1 Runoff Area=6,339 sf Runoff Depth>0.84" Flow Length=108' Tc=6.0 min CN=73 Runoff=0,14 cfs 0.010 of Subcatchment 2S: Subcatchment 2 Runoff Area=12,637 sf Runoff Depth>1.22" Flow Length=123' Tc=6.0 min CN=80 Runoff=0.44 cfs 0,030 of Subcatchment 3S: Roof Runoff Aroa-1,938 sf Runoff Depth>2.68" Tc=6.0 min CN=98 Runoff=0.13 cfs 0.010 of Subcatchment 4S: Canopy Runoff Area=2,379 sf Runoff Depth>2,68" Tc=6.0 mIn CN=9B Runoff=0.16 cfs 0.012 of Subcatchment 5S: Canopy Runoff Area=520 sf Runoff Depth>2.68" Tc=6.0 min CN=98 Runoff=0.04 cfs 0.003 of Reach 1 R: Turnpike Street Inflow=0.14 cfs 0.010 of Outflow=0,14 cfs 0,010 of Reach 211: Catch Basin Inflow=0.44 cfs 0.030 of Outflow=0.44 cfs 0.030 of Pond 2P: SIS1 Peak Ftev=137,77' Storage=437 of Inflow=0.33 cfs 0.025 of Outflow=0.02 cfs 0.023 of Total Runoff Area e 0.547 ac Runoff Volume 0.065 of Average Runoff Depth 1.42" • E i Turnpike - Post-RIEV1 Type Ili 24-hr 2-Year Rainfall=3,10" Prepared by LandPlex, ITC Page 3 l-lydroCADO 7.10 sln 003867 0 2005 HydroCAD 5oflwaro Solutions LLC Subcatchment 1 S: Subcatchment 1 3 Runoff 0.14 cfs @ 12.10 hrs, Volume= 0.010 af, Depth> 0.84" Runoff by SCS TR-20 method, UH=SCS, Time Spam 6.00-20.00 hrs, dt= 0.05 hrs Type ill 24-hr 2-Year Rainfall=3.10" Area sf ON Description 3,638 98 Paved parking & roofs 2,701 39 >75%Grass cover Good HSG A 6,339 73 Weighted Average i Tc Length Slope Velocity Capacity Description min feet ftlfk ft/sec cfs 0.7 50 0.0200 1.2 Sheet Flow, Sheet Flow Smooth surfaces n= 0.011 P2= 3.10" 0.3 58 0.0200 2.9 Shallow Concentrated Plow, Shallow Paved Kv= 20.3 fps 1.0 108 Total, Increased to minimum Tc = 6.0 min Subcatchment 2S: Subcatchment 2 Runoff - 0.44 cfs @ 12.10 hrs, Volume= 0,030 af, Depth> 1,22" Runoff by SCS TR-20 method, UH=SCS, Time Spam 5.00-20.00 hrs, dt= 0.05 hrs Type III 24-hr 2-Year Rainfall=3.10" Area sf ON Description 3,794 39 >75% Grass cover, Good, HSG A 8,843 98 Paved arkin & roofs 12,637 80 Weighted Average Tc Length Slope Velocity Capacity Description (feet) _ (ftlft) (fl/sec) (cfs) 5.1 50 0.0260 0.2 Sheet Flow, Grass: Short n= 0.150 P2= 3.10" 0.1 10 0.0300 1.2 Shallow Concentrated Flow, Short Grass Pasture Kv= 7.0 fps 0.7 63 0,0060 1.6 Shallow Concentrated Flow, Paved Kv= 203 f s 5.9 123 Total, Increased to minimum Te = 6.0 min Subcatchment 3S: Root Runoff 0.13 cfs Cc7b 12,09 hrs, Volume= 0.010 af, Depth> 2.68" Runoff by SCS TR-20 method, UI-I=SCS, Time Spam 5.00-20.00 hrs, dt= 0.05 hrs Type III 24-hr 2-Year Rainfall=3.10" i Turnpike - {post-REV1 Type 11124-hr 2-Year Rainfall=3.10" Prepared by LandPlex, LLC Page 4 l l droGADO 7.10 s/n 003867 0 2005 N droCAD Software Solutions LLC Area sf CN Description 1,938 98 Paved parking & roofs Tc Length Slope Velocity Capacity Description min feet ft/ft ft/sec cfs 6.0 Direct Entry, i Subcatchment 4 S: Canopy Runoff = 0.16 cfs @ 12.09 hrs, Volume= 0.012 af, Depth> 2.68" Runoff by SCS TR-20 method, UH=SCS, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Type III 24-hr 2-Year Rainfall=3.10" Area (sf) CN Description 2,379 98 Paved parking & roofs Tc Length Slope Velocity Capacity Description min feet fUft) (fUsec) (cfs 6.0 Direct Entry, Subcatchment SS: Canopy Runoff = 0.04 cfs @ 12.09 hrs, Volume= 0.003 af, Depth> 2.68" Runoff by SCS TR-20 method, UH=SCS, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Type III 24-hr 2-Year Rainfall=3.10" Area sf CN____Description 620 98 Paved parking & roofs Te Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (fUse (cfs) 6.0 Direct Entry, Reach 1 R: Turnpike Street [401 Hint. Not Described (Outflow=Inflow) Inflow Area = 0.257 ac, Inflow Depth > 0.47" for 2-Year event Inflow 0.14 cfs a 12.10 hrs, Volume= 0.010 of Outflow = 0.14 cfs @ 12.10 hrs, Volume= 0.010 af, Atten= 0%, Lag= 0.0 min Routing by Dyn-Stor-Ind method, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs i Turnpike r post-REV`I Type /it 24-hr 2-Year Rainfall=3.13" Prepared by LandPlex, LLC Page 5 j ♦-I droCAD©7.10 s/n 003867 O 2005 H droCAD Software Solutions LLC Reach 2R: Catch Basin [40) dint: Not Described (Outflow=lnflow) 6 Inflow Area = 0.290 ac, Inflow Depth > 1.22" for 2-Year event Inflow - 0.44 cfs @ 12.10 hrs, Volume= 0.030 of Outflow - 0.44 cfs @ 12.10 hrs, Volume= 0.030 af, Alten= 0%, Lag= 0.0 min Routing by Dyn-Star-Ind method, Time Span= 5.00-20.00 lirs, dt= 0.05 hrs Fond 2P: SIS1 I [82) Warning: Early inflow requires earlier time span Inflow Area w 0.111 ac, Inflow Depth > 2.68" for 2-Year event Inflow = 0.33 cfs @ 12.09 hrs, Volume= 0,025 of Outflow _ 0.02 cfs @ 11.60 hrs, Volume= 0.023 at, Atten= 92%, Lag= 0.0 min Discarded 0.02 cfs @ 11.60 hrs, Volume= 0.023 of Routing by Dyn-Stor-Ind method, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Peak Elev= 137.77' @ 13.17 hrs Surf.Area= 1,041 sf Storage= 437 c# Plug-Flow detention time= 139.3 min calculated for 0.023 of (93%of inflow) Center-of-Mass det. time= 112.3 min ( 851.1 - 738.9 ) Volume Invert Avail.Stora e Stora a Description ##1 137.50' 1,240 cf 44.6"W x 30.0"H x 7.121 StormTech SC-740 x 27 Inside 112 #2 137,00' 961 cf 15.75W x 66.061 x 3.50'H Prismatoid 3,643 of Overall - 1,240 of Embedded = 2,402 of x 40.0% Voids 2,201 cf Total Available Storage Device Routing Invert Outlet Devices ##1 Discarded 0.00' 1.020 in#hr Exfiltration over Surface area Discarded Outflow Max=0.02 cfs @ 11.60 hrs HW=137.04' (Free Discharge) =Exfiltration (Exfiltration Controls 0.02 cfs) i Turnpike - Post-RE'V1 Type I1124-hr 10-Year Rainfall=4.50" Prepared by LandPlex, LLC Page 6 H droCADO 7.10 sln 003867 O 2005 FI droCAD Software Solutions LLC Time span=5,00-20.00 hrs, dt=0r05 hrs, 301 points Runoff by SCS TR-20 method, UH=SCS Reach routing by Dyn-Stor-Ind method - Pond routing by Dyn-Star-Ind method Subcatchment 1S: Subcatchment 1 Runoff Area=6,339 sf Runoff Depth>1.75" Flow Length=108' Tc=6.0 min CN=73 Runoff=0.31 cis 0.021 of Subcatchment 2S: Subcatchment 2 Runoff Area=12,637 sf Runoff Depth>2.29" Flow Length=123' Tc=6.0 min CN=80 Runoff=0.82 cis 0.055 at Subcatchment 3S: Roof Runoff Area=1,938 sf Runoff Depth>3.96" Tc=6.0 min CN=98 Runoff=0.19 cis 0.015 of Subcatchment 4S: Canopy Runoff Area=2,379 sf Runoff Dupth>3.96" Tc=6A min M98 Runoff=0.23 cis 0.018 of Subcatchment 5S: Canopy Runoff Area=520 sf Runoff Depth>3,96" Tc=6.0 min CN=98 Runoff=0.05 cis 0.004 of Reach 1 R: Turnpike Street Inflow=0.31 cis 0.021 of Outflow=0.31 cfs 0.021 of Reach 213: Catch Basin Inflow=0.82 cis 0.055 of Outflow=0.82 cis 0.055 of Pond 2P: SIS1 Peak Elev=138.17' Storage=762 of lnflow=0.48 cfs 0.037 of Outflow=0.02 cis 0.025 of Total Runoff Area 0.547 ac Runoff Volume 0.113 of Average Runoff Depth = 2,49" I I i Turnpike e Post-REV1 Type H/24-hr 10-Year Rainfall=4,50" Prepared by LandPlex, LLC Page 7 I ydroCADO 7.10 s/n 003867 ©2005 H droCAD Software Solutions LLC Subcatchment IS: Subcatchment y Runoff - 0.31 cfs @ 12.10 hrs, Volume= 0.021 af, Depth> 1.75" Runoff by SCS TR-20 method, UH=SCS, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Type III 24-hr 10-Year Rainfall=4.50" Area sf CN Descri tion 3,638 98 Paved parking & roofs 2,701 39 >75% Grass cover, Good, HSG A 6,339 73 Weighted Average To Length Slope Velocity Capacity Description min feet ft/ft ft/sec cfs 0.7 50 0.0200 1.2 Sheet Plow, Sheet Plow Smooth surfaces n= 0.011 P2= 3.10" 0.3 58 0.0200 2.9 Shallow Concentrated Plow, Shallow Paved Kv= 20.3 fps 1.0 108 Total, Increased to minimum To = 6.0 min Subcatchment 2S: Subcatchment 2 Runoff - 0.82 cfs @ 12.09 hrs, Volume= 0.055 af, Depth> 2.29" Runoff by SCS TR-20 method, UH=SCS, Time Span= 5.00-20.00 hrs, d1= 0.06 hrs Type III 24-hr 10-Year Rainfall=4.50" Area sf CN Description 3,794 39 >75%Grass cover, Good, HSG A 8,843 98 Paved parking & roofs 12,637 80 Weighted Average To Length Slope Velocity Capacity Description (min)-_ __ (feet) (tuft) (ft/sec) (cfs) 5.1 50 0.0260 0.2 Sheet Flow, Grass: Short n= 0.150 P2= 3.10" 0.1 10 0.0300 1.2 Shallow Concentrated Plow, Short Grass Pasture Kv= 7.0 fps 0.7 63 0.0060 1.6 Shallow Concentrated Flow, Paved Kv= 20.3 fps 5.9 123 Total, Increased to minimum To = 6.0 min Subcatchment 3S: Loaf Runoff - 0.19 cfs @ 12.09 hrs, Volume 0.015 af, Depth> 3.96" Runoff by SCS TR-20 method, UH=SCS, Time Span= 5,00-20.00 hrs, dt= 0.05 hrs Type III 24-hr 10-Year Rainfall=4.50" i Turnpike A Post-REV1 Type /1l 24-hr f 0-Year Ralnfall=4.50" Prepared by LandPlex, LLC Page 8 „y o „ b i�lydroCAD®7.10 sln 003F357 O 2005 l-{, dr„ CA Software Solutions LLC Area sf CN Description 1,938 98 paved parking & roofs Tc Length Slope Velocity Capacity Description min feet ft/ft ft/sec cfs 6.0 Direct Entry, Subcatchment 4S: Canopy Runoff = 0.23 cfs a 12.09 hrs, Volume= 0.018 at, Depths 3.96" Runoff by SCS TR-20 method, UH=SCS, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Type III 24-hr 10-Year Rainfall=4.50" Area sf CN Descri lion 2,379 98 Paved parking & roofs To Length Slope Velocity Capacity Description min feet ft/ft ft/sec cfs -6.0 Direct Entry, Subcatchment 5S: Canopy Runoff - 0.05 cfs @ 12.09 hrs, Volume= 0.004 at, Deptha 3.96" Runoff by SCS TR-20 method, UH=SCS, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Type III 24-hr 10-Year Rainfall=4.50" Area sf ON Description 520 98 Paved parking & roofs To Length Slope Velocity Capacity Description (min),_ feet ft/ft ft/sec cfs 6.0 Direct Entry, Reach 113: 'Turnpike Street (40] Hint: Not Described (Outflow=Inflow) Inflow Area 0.257 ac, Inflow Depth > 0.99" for 10-Year event Inflow - 0.31 cfs cr 12.10 hrs, Volume= 0.021 of Outflow _ 0.31 cfs c@ 12.10 hrs, Volume= 0.021 af, Atten= 0%, Lag= 0.0 min Routing by Dyn-Stor-Ind method, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs I i Turnpike .. Past-REV1 Type 1U 24-hr 10-Year Rainfall=4.50" 1 Prepared by LandPlex, LLC Page 9 I-I droCADO 7.10 sln 003867 U 2005 H droCAD Software Solutions LLC Reach 2R: Catch Basin d 1401 Hint: Not Described (Outflow=Inflow) Inflow Area 0.290 ac, Inflow Depth > 2.29" for 10-Year event Inflow _ 0.82 cfs @ 12.09 hrs, Volume= 0.055 of Outflow — 0.82 cfs. @ 12.09 hrs, Volume= 0.055 af, Allen= 0%, Lag= 0,0 min Routing by Dyn-Stor-Ind method, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Pond 2P: SIS1 1821 Warning: Early inflow requires earlier time span Inflow Area = 0.111 ac, Inflow Depth > 3.96" for 10-Year event Inflow _ 0.48 cfs @ 12.09 hrs, Volume= 0.037 of Outflow — 0.02 cfs @ 11.00 hrs, Volume= 0,025 af, Atten= 95%, Lag= 0.0 min Discarded 0.02 cfs @ 11.00 hrs, Volume= 0.025 of Routing by Dyn-Stor-Ind method, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Peak Bev= 138.17' @ 14.12 hrs Surf.Area= 1,041 sf Storage= 762 of Plug-Flow detention time= 155.5 min calculated for 0,025 of (69% of inflow) Center-of-Mass det. time= 85.6 min ( 821.4 - 735.8 ) Volume Invert Avall.Storage Storage Description #1 137.50' 1,240 of 44.6"W x 30.0"H x 7.12'L StormTech SC-740 x 27 Inside #2 #2 137.00' 961 of 15.75W x 66.481 x 3.50'H Prlsmatold 3,643 of Overall - 1,240 of Embedded = 2,402 of x 40.0% Voids 2,201 of Total Available Storage Device Routing Invert Outlet Devices #1 Discarded 0.00' 1.020 inlhr Exfiltratlon over Surface area Discarded OutFlow Max=0.02 cfs cY 11.00 hrs HW=137.04' (Free Discharge) '�-1=Exfiltratlon (Exfiltration Controls 0.02 cfs) i i h u Turnpike r Post-REV1 Type /II24-hr I00-Year Rainfall=6,40" Prepared by LandPlex, LLC Page 10 Hy_droCADO 7.10_sin 003867 O 2005 f-IydroCAD Softwaro Solutions I_LC Time span=5.00-20.00 hrs, dt=0,05 hrs, 301 points Runoff by SOS TR-20 method, UH=SCS Reach routing by Dyn-Stor-Ind method - Pond routing by Dyn-Stor-Ind method 9 Subcatchment 1S: Subcatchment 1 Runoff Area=6,339 sf Runoff Depth>3.19" Flow Length=108' Tc=6,0 min CN=73 Runoff=0.57 cfs 0.039 of Subcatchment 2S: Subcatchment 2 Runoff Area=12,637 sf Runoff Depth>3.89" flow Length=123' Tc=6.0 min CN=80 Runoff=1.37 cfs 0.094 of Subcatchment 35: Roof Runoff Area=1,938 sf Runoff Depth>5.69" Tc=6.0 min CN=.98 Runoff=0.27 cis 0.021 of Subcatchment 4S: Canopy Runoff Area=2,379 sf Runoff Depth>5.69" -I'c=6.0 ruin CN=98 Runoff=0.33 cis 0.026 of Subcatchment 5S: Canopy Runoff Area=520 sf Runoff Depth>5.69" Tc=6.0 min CN=98 Runoff.-0.07 cis 0,006 of Reach 1 R: Turnpike Street Inflow=0.57 cfs 0.039 of Outflow=0.57 cis 0.039 of Reach 2R: Catch Basin Inflow=1.37 cis 0,094 of Outflow=1.37 cis 0,094 of Pond 2P: SIS1 Peak Fiev-138.84' Storage,1,286 cf Inflow=0.68 cis 0.053 of Outflow=0.02 cis 0.027 of Total Runoff Area =0.547 ac Runoff Volume 0.185 of Average Runoff depth 4.07" i 1 Turnpike - most-RRV1 Type 11124-hr 100-Year Ralnfa11=6.40" Prepared by LandPlex, LLC Page 11 H droCADO 7.10 sln 003867 O 2005 H droCAD Software Solutions LLC Subcatchment 1S: Subcatchment 1 Runoff - 0.57 cfs c@ 12.09 hrs, Volume= 0.039 af, Depth> 3.19" Runoff by SCS TR-20 method, UH=SCS, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Type III 24-hr 100-Year Rainfall=6.40" Area sf CN Description i 3,638 98 Paved parking & roofs 2,701 39 >76%Grass cover, Good, HSG A 6,339 73 Weighted Average e Tc Length Slope Velocity Capacity Description min feat ft/(t ft/sec cfs 0.7 50 0.0200 1.2 Sheet Plow, Sheet Flow Smooth surfaces n= 0,011 P2= 3.10" 0.3 58 0.0200 2.9 Shallow Concentrated Plow, Shallow _ Paved Kv= 20.3 fps 1.0 108 Total, Increased to minimum To = 6.0 min Subcatchment 2S: Subcatchment 2 Runoff W 1,37 cfs @ 12.09 hrs, Volume= 0.094 af, Depth> 3.89" Runoff by SCS TR-20 method, UH=SCS, Time Span= 6,00-20.00 hrs, dt= 0.05 hrs Type III 24-hr 100-Year Rainfall=6.40" Area sf CN Description 3,794 39 >75% Grass cover, Good, HSG A 8,843 98 Paved parking & roofs 12,637 80 Weighted Average To Length Slope Velocity Capacity Description (min) (feet) (fU(Q (ft/seo) (cfs) _ 5.1 50 0.0260 0.2 Sheet Flow, Grass: Short n= 0.150 P2= 3.10" 0.1 10 0.0300 1.2 Shallow Concentrated Plow, Short Grass Pasture Kv= 7.0 fps 0.7 63 0.0060 1.6 Shallow Concentrated Flow, Paved Kv= 20.3 fps 5.9 123 Total, Increased to minimum To = 6.0 min Subcatchment 3S: Roof Runoff - 0.27 cfs @ 12.09 hrs, Volume= 0.021 af, Depth> 5.69" Runoff by SCS TR-20 method, UH=SCS, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Type III 24-hr 100-Year Rainfall=6.40" 1 Turnpike m Past«REV1 Type lit 24-hr i00-Year Raintall=6.40" Prepared by LandPlex, LLC Page 12 H droCAD)7.10 s/n 003867 0 2005 H droCAD Software Solutions LLC E Area sf CN Description 1,938 98 Paved parking & roofs Tc Length Slope Velocity Capacity Description min feet IVft ft/sec cfs 6.0 Direct Entry, Subcatchment 4S: Canopy Runoff = 0.33 cfs @ 12.09 hrs, Volume= 0,026 at, Depth> 5.69" Runoff by SCS TR-20 method, UH=SCS, Time Span= 5.00-20.00 l,r's, dt= 0.05 hrs Type III 24-hr 100-Year Rainfall=6.40" Area sf CN Description 2,379 98 Paved parking & roofs Tc Length Slope Velocity Capacity Description (min) (feet) -- Oft) (fUsec) (cfs) 6.0 direct Entry, Subcatchment 5S: Canopy Runoff 0.07 cfs @ 12,09 hrs, Volume= 0.006 at, Depth> 5.69" Runoff by SCS TR-20 method, UH=SCS, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Type III 24-hr 100-Year Rainfall=6.40" Area sf CN Description - 520 98 Paved parking & roofs Tc Length Slope Velocity Capacity Description min feet ft/ft ft/sec cfs 6.0 Direct Entry, Reach 1 R, Turnpike Street [40] Hint: Not Described (Outflowrinflow) Inflow Area= 0.257 ac, Inflow Depth > 1.81" for 100-Year event Inflow 0.57 cfs a 12,09 hrs, Volume= 0.039 of Outflow -- 0.57 cfs cr 12.09 hrs, Volume. 0.039 at, Atten= 0%, L.ag= 0.0 min Routing by Dyn-Stor-Ind method, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Turnpike - Post-IREVI Type 11124-hr f 00-Year Rainfall=6.40" Prepared by LandPlex, LLC Page 13 H droCADO 7.10 sln 003667 ©2005 H droCAD Software Solutions LLC Leach 2R: Catch Basin . [401 Hint: Not Described (Outflow=lnflow) Inflow Area = 0.290 ac, Inflow Depth > 3.89" for 100-Year event Inflow 1.37 cfs @ 12.09 hrs, Volume= 0.094 of Outflow 1.37 cfs 0 12.09 hrs, Volume= 0.094 af, Atten= 0%, Lag= 0.0 min Routing by Dyn-Stor-Ind method, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Fond 2P. SIS1 [821 Warning: Early inflow requires earlier time span Inflow Area = 0.111 ac, Inflow Depth > 5.69" for 100-Year event Inflow - 0.68 cfs 0 12,09 hrs, Volume= 0.053 of Outflow - 0.02 cfs @ 9.95 hrs, Volume= 0.027 af, Atten= 96%, Lag= 0.0 min Discarded 0.02 cfs @ 9.95 hrs, Volume= 0.027 of Routing by Dyn-Stor-Ind method, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Peak Elev= 138.84' @a 15,37 hrs Surf.Area= 1,041 sf Storage. 1,286 cf Plug-Flow detention time 155.2 min calculated for 0.027 of (52%of inflow) Center-of-Mass dot. time= 61.3 min ( 795.2 - 733.9 } Volume Invert Avail.Storac e Stora e Description #1 137.50' 1,240 of 44.6"W x 30.0"H x 7.121 StormTech SC-740 x 27 Inside 42 #2 137.00' 961 cf 15.75'W x 66.081 x 3.50'H Prismatoid 3,643 of Overall - 1,240 cf Embedded = 2,402 of x 40.0%Voids 2,201 cf Total Available Storage Device Routing Invert Outlet Devices #1 Discarded 0.00' 1.020 inlhr Exfiitration over Surface area Discarded OutFlow Max=0.02 cfs Cal 9.95 hrs HW=137.04' (Free Discharge) ' --.1=S01tration (Exfiltration Controls 0.02 cfs) W .. ^"mot is ��a..Ts[:x• ''''`.'lh.s�.,...1, Sec _`=' p `-•� I � _ � f'� A�:3$53 SF �:. :YLs✓..+J,��J CA =ma Wr L......1` _ash -� Sum 1•a]L :u7.1 ��� •___��` gi _ RZ•+i+4t� :••.e.'�. �S Ii��bC l4iffTY. iCl..3] :aLL3 MW I.22 ( 1.3.`.^. Hiri�•v'b Sie r� Y � f P :.fi '��� It IC�a?`�'..•7.,,��.�ui�^�.a� ........��i°—.�:�..s-�- i.—<—'�^—:—�'---s---•_I—t=--r"r��s-""-s--•"'^-:�L 4"° :..z7 vaw:U.0 � m 1.ti5] 1n i TURNPIKE STREET c f I € I i 0 25 50 100 200 I ST - D E V E L 0 P M E N T SU BCATCHM ENT . 25 TURNPIKE NORTHE S SETTS E I i i I { SECTION : CONSTRUCTION-PE RI®D, OPERA'T`ION MAINTENANCE, AN) LOI G-TERM POLLUTION PREVENTION PLAN i n I LANDI'LliX, LI,C r 10 GFORG1;ST., SUITH 208, LOWI3LL, MA 01952 978-201-9390 WWW,LANDi'I,LX.CGIvI I F E i SE CTION 4.1. - INTRODUCTION The following Operation and Maintenance plain provides (lie requirements for(lie proposed Slorill Water m anaagetnent sysicin throughout(lie cons(mcWm phase and (lie post development period or(lie sys(eil1. 'file nrtiiltcnancc staudar(IS presented are biased on remmn umWed deign and nmdmcmmcu standards in Ilan rghig 5mrnnm r M Mas.saebtam.s, 1Nlrrluc On Smninvater llaildDunk, Prepare(!kw MA Delmrtrr ent of E,itviromit nt(rl Prolection These opet'alions and maintenance proced tires are required for proper operation of lilt storinYater management s min; addidonal procedures nm 'illsa be dcwh m as the system IS o luraled over it period or linic. As with ail 7 1 ) I ) l i tilormwa(ul'facilities, the ctnlditions inay change or Me inat tgamelll may be shgilifiml as the luahiMnance liel'Smmiel become I1103'e familiar with then). For example,as detembn facilities mature, the ability lair the basins to remove pollwalits, and flee efficiency increases, and 111crerar•C,(he frequency of inpC(:lloll May nee{l to bu iadiu51Cd. F Proper maintenance IS essential to onsure tha( the.performance.of the syslem elects the design expectation A system that is not nmainlaind will inevitably I'rlll and could lead to financial loss,damage to sul•rounling ill fioSIRICItire ar envirorimontally sclisitNe umn, and all increase, in tile,liability of the property owller, The three keys to maintaining it functional Morin Water management system are personnel, e(hwaflon, amid recor(1 keel illg. Personnel make the dirfcrene between a Storillwialer Management System that pert unm its deMpmd thmugNmt ils lifetime or one that Mils due to lack of attention. lsdu(:alion pinvides the Imrsounel with the skills needed to effcctivcly maintain a Stornlwalcr Management System. Recar(1 Keeping allows the personnel to track Elie maintenance and [lie pel'raimmlice of(lie system to dmunihne when nutJor maintenancu tasks are required. Maintenance is the responsibility or the property owner. This is true whether(he properly Owner is an individual where the land is private property 01'where the land is public with (lie responsibility assigned to that mulllcipali(y. Malntename shall be performed as outline() in this Opemdonal and Maintenance Ilan. 'Those responsible fear the work slim)) have a copy of dais plan and a copy or the complete design plans to rod them in understanding(lie intent and rcgllircnlCrlts unique to this StornlWater MaulagC I et If )raeilily. All maintenance personnel shall he aWat'c or the purpose ofcach storinwaler manageruenE BMP in removing; CQlitilElllnall(S and Totitl Susllcn(lcd S(}lids{'I'SS) from tha sturnlwalCr rullafl. The result is the collection,removal and storage or We Conamilmms willin the coruponents. The CCI1ta111inillllS could include(rash,debris,Oil,sediment and soluble or insoluble materials. Ill mast situations; these can be handled,stored mid dkimmud With minimal sul'e(y rcquiremm% in hull the hmilh hunwds my 111inimM m4lb the concentrations involve(]. However, (lie personnel should be aware of the.risk an(l/or tic passibility or potential dangms, Thu maintenance personnel shall be aware of Elie safely rlCedS involved Will)Cnlry into Cu111111 f areas Such as Sudinient and oil separators and shall atbidc by all applicable OSHA regulations. Personnel should Ile familiar with local emergency numbers and have access to first aid ma(criatls. Mailitenalice personnel Shall Ile Ialmilial'with local, state and fcderal regidatims and guldelims conemi-ng(Ile lisp pal of all nlulurimis generated hvm be facillflL's its a restill of maintenance. All Wastu molet'rills Amll he hmidiml, stal•e(I, ninsporwd and disposed in acconlallce With Ihose regulations. SI{'CTION 4.2-- RESPONSIBLE PARTIES 'rile construction contractor as well as(lie owner, A.L. Prime Will be(lie respons(tile parties dnflng Construction al'tllc Starillwaater management System. The ctn'1'enl owner, A.L. t'rinic,or the future owner of[fie property, will lie the responsible party during tilt, post- (levelopillunt Illailitenlice period of lire Storlilwater management System, A copy or lice Slormwatcr Report will remain on site to nolif'y future owners of the presence,of the stormwater Syslcm,rind the proper o1wration and mallltellimCe. LANK}PLrX, LLC + 10 GHDRGH ST.,SUITE 208, LOWIVL, MA 01852 ® 978-201-9390 o WWW.LANI)IILI,X.COM E i Members or titc'I'own of Nordi Andover Planiling Board or its designee may eii(o t1w property at i'l:ittiilnable limes and Illmlller rill'the purpose ol'the illspectioll of'the stol'lllwaler InanagCmCnl system. i 1 SECTION 4.3 CONSTRUCTION PERIOD MAINTENANCE PROCEDURES Maintenance requirements are the most deni lliding;during tilt consirulctioll pimso of a project witen the groumi is diStil'iled With lllirtial runoff control in a condition (flat is most likely to produce silt-laden rt mllT. During this period, the contractor and owner shall Illcct the design and per ilrnllllice standards of a Rilly constructed, stabilized syslcnl. Proper tl'catmel)t of star lwawr is only possible with a proper construclioll Sequence plats and rigorolls IllaiilICIM110e procedures oi'the storm water components The general collstruction sequence,as it applies to the storm Wlllel'nlallagelliclll componems shall he as Hollows: I. Install crositon and sedimCnt controls measures wraw wattle as shown on plan prior to disturbing soil and any tcrllporary structures. 2. Conduct all soil-disturbing(operations(luring the dry periods and not during;limes of precipitation, 3. Direct the S101111 Watel'1'tllloff into temporary pollution prevention structures. 41. iiegin site work. 5. Stabilize grading and landscaped rll'eas as soon us possible. 'I'lle lilllowing;structures shall be in place during Elie coilstruclion phase and shall be maintained its outlined below. 1:'rnsiun Con11•01 Measure's ReSPonsible Pragv:Silo C'marartur • Straw wattle shall lie inspected Weekly during construction and alter each rainstorm. • Straw wattle shall be replaced il'they become silt laden and no longer Illect perl'ormanec standards • All sediments should Ile handled properly and disposed in accordance With local,stale and i'cdcral guidelines and regulations. Stab-snrfitee lit ration System (Storm ech Cla unbers) Responsible Party: Site Contractor • Stabilize the site pricer to installing the subsurlilce structure. • Do not allow rtmol't'g'rom any disturbed areas on the site to now to the s(ruclurc • hope off'the area Where tile sill lst trace Structures are to lie placed. Accomplish ally I-C(lUil'ed C\Ca Vitt iOn will)equipment placed,lust outside this area. • When installing the final lot) surface (pavcinom), work from tilt: edges to minimize compaction of lice underlying Soils • Provide observation well inspection porls to ellable inspwiml of water levels Within the system and make file inspection ports visible at grade Street Sweeping Responsible Pur(v: Site Contractor • Strects, concrete driveways, all(l other impervious arras shall be removed of debris whell applicable to prevent pollution and clogging of Slormwalter Management Systems. SEWTION 4.4 POST-DEVELOPMENT MAINTENANCE PROCEDURES i E'rvsion Control Measures Responsible Part),: Property Owner • Straw wattle shall be removal following;Con31ructioil;colltact tile Conservation Commission to inspect stabilized area to conf(1rm(o compliance requirements. LANDi'Ll-M,LLC e 10 GEORGI ST., SUIT 208, LOWELL, MA 01852 e 978-201-9:390 a WWW.LANDPLi3X.00M E Y ,Sub-srrr%ace 1n%nitratior Splent (Slonnfeuh Chambers) Responsible Peirlw l'roperYv Owner 9 Because subsurfucc structures are ilISNI M ullder'gr•ouud, (licy arc extremely diITicult to maintain a Inspect inlets at least twice a year 9 Remove any debris that may clog the syslem • Refer to the ma ntifacturer's speciflcartiom,for Illailitenance ol'tile Sub-sul't'ace infiltration System as well its the Isolator Rows Sh-eel Sweeping Responsible Pat-W Properly Oivner I Inspection and nlain(cniulce of'la wns and landscaping (including trash/debris removal, C(c.), Hind paved surfaces and SWCCpillg sllattl be Col(lucltld at 1Cast twice it year. i SECTION 4.5 - LUI-IPPL PRACTICES Applicable Operational Pnietives•t 1) Prepare all t7mergency spill respolise and cleanup plall and have deslgnaned tralined person(s)available either on- situ or on call all all times to promptly and properly implement Ilim plan and immediately cleanup all spills. Keep suitable cleanup malerials,such as dry adsorbent nlatcritils, on-site to allow prompt cleanup of a spill. 2) 'Train employees oil the proper use of fuel dispensers. Post "No Topping OIT'sighs(topping off gas tanks causes spillage and vents gigs fluiles to(he air). Make sure that the an(onlatic shutoff on the fuel nozzle is functioning properly. 3) 'Tile person conducting(lie Riol transfer must be present at the fueling ptullp during fltel transfer, parlicularly sit unaftilded Ul'sell-sol-ve Stations. 4) Keep(trained (nil filters ill it suitable container or Grunt. Drums should be closed oil till impervious paid with WIC(IL llc con(aiiuttcnt. Applicable Design Imelices., I) Design the fueling island to coltrol spills. 2) The fueling pad should be paved with Portland Cement concrete, or equivalent. 3) The EMINg iShUld should have it Poor or canopy to prevent (lie dil'ect clllry Of'precipitillioll olito the spill Coll laillmcl)t pad.The roof or calopy should, all a illillilmun,cower the spill coillairilucilt pad Within the gritcle break or i'ucl dispensing,area and prei'crably extend several additionid I'M to red UM tllc 11111'od(IC6011 of windblown still.Convey till roof(mills to storm drahls oulside the I'(lefing Containment areil. 4) Transl'cr(lie f d fl•om the dCliVel•y tank trucks.to the ftiel storage lank ill impervious contained Arens and ensure that appropriate overflow protection is Used. Alternatively,cover nearby storm draills(luring the filling process and use drip pans under all hose connections. 4Y SECTION 4.6 ILLICIT DISCHARGE STATEMENT All illicit(lischai•ges to(be pr()ptlse(l storillwater lllanagcntcnt system are prohibited. Furlherrnore,ill] illicit (hScl)airges to the Towil of Nortil Andover storinwaltor Ilatllagell)elit System are prollibited. SECTION 4.7 MOS UITO CONTROL Remove Mosquito flabilats o All important part of mosquilol control around Mollies is making,Aire that mosquitoes don't huve it place to Illy their eggs. Because mosquitoes need water[ill•two slages of their lire cycle, it's impmlailt to monitor standing Water sources. o Get rid of'sianding Waiter in rain gultcrS, Old lircS, buCI(Cis, plastic covers or ally other container where mosquitoes call breed. s Drain tcmporalry pnoIs of water or fill with dirt. I..ANDPLI;X,LLC e 10 G13ORGF s'I'., sUt'l'1's 208, I,OWI..,Lt,, MA 01952 ® 978-201-9390 9 WWW,LANDI'LIiX.COM Use st)-m-l(Irld Buo-io's 'ovvl.;III saps ill walk,doun;and %Yindtlw:s Io 111,010111 IlloS(Itlitocs 1'roul etllcvill�u- We swu whWmv ad dmw wmas am AW tiow" SECDON 4"'1 OVERA.TION AND NIAINTENAt"ICE BUDCRA' Tho 101'1110 0I1L!V;lIi(IIIaIId Illailliell"111CO include:,trcul s%wopilig" olld Illawwimmu jimn hqwcdmm Ile qwmikwi W nwhanume Wyn k omhwwd In Ile 5 WKWMU pQ,- SESTI-ON 4.9 IMSPONSIBLE PARTY SICNATURES Tho oWlIcl,of the propel-Iy, AJ,. I'l-illit! will ho the re%ponsilflo party 1*01'111L! 01)eI';IIkJl) ,I11d slOVIII NaSNQrAh(I-Fit1, VP 7NI-246,0201 .......... Anthony G a P E., LEED AP, Engineer 5121-7450- ,I AMhonjguWlQNALPdmexom I"AND111 I,X, HA, 10(H AMU H 1 It', SO HT,208, LONVI U. MA n 18.52 478-20 I-93t)(1 1 F 1 lP,�i 1 13 May 2019 Town of North Andover 120 Main Street North Andover, MA 01845 RE. Illicit discharge Compliance Statement 1725 Turnpike St, N.Andover MA--A,L, prime Energy Consultant, Inc. No Illicit Discharges presently exist, nor are any illicit discharges proposed on the subject site.The only discharges to the site sub-surface infiltration system is roof runoff, All personnel at the site are trained as Class A, B, or C Operators in compliance with Massachusetts DEP requirements, An emergency response plan is maintained on site and Inspected annually. Emergency Response material Is stored on site as a first response measure to any spills. 12 x Antho iba P.E., Engineer A.L. P6 e °ergy Consultant, inc. Mobile—512.745-6400 l Anthony.Guba@ALPrime.com �r �w COG- INC,p,c�-� C)(fC PROP. Li ILDING PROP. CANOPY [ 1 p\ CONCRETE !"ONCR-7- TURNPIKE STREET E SCALE: 1 "_50' 0 25 50 100 200 STORMWATER MANAGEMENT PLAN 5 TURNPIKE STREET NORTH ANDOVER , MASSACHUSETTS 1 fi holtltor Blow At a Milli11111111, S(ort1ITCCII recommends annual inspections. Initially, the iSOlat01' ROW Sl1c}uld be inspected every G mont11S for the 111-st ye,11`of operation, For subscquent years, the inspection Should be iId1IISied NISCd Upon previous observation o1 sed111lent deposition. If up(}11 visual inspection It is found that Sediment Ails ilcct lnulatcd, it stadia rod SIIo1II(1 be inserted to detern1111e the depth o1 sediment. When the avel,.1ge depth ol'sed1111ent exceeds 3 inches throughout the length oi'tllc Isolator Row, CIcaI1-out S110111d bO pCIT01-111Cd, An a al Inspection & Mailltelvancc Ize )or( A(tach additional pages as i•C(Iuit-M to Cully (ioculllCnt conditions and maintenance performed. Dal( Inspector Condition Maintenance PerlormccI f�Reccipts Must be attached to report showing payment for 11 ailitenilnce peel-ormed, LANf}PH'IX, I.I...0 ® 10(7rC}RCIs STRE.F.T,SUITE 208, 1.()W1;LL, MA 01852 978-201-9390 o WWW.1-AN17PLEX.0 OM I { I LANDPI.A X, I,LC r 10 GEORGE ST., SUITE 208, LOWELL, MA 01952 ® 978-201-9390 WWW,LANI)III,I?X.COM I I I Designed to meet the most stringent industry performance standards for superior structUral integrity while providing designers Stormiffie"'ch with a cost-effective,, method to save ValUable land and protect U(:rlia,�HeIVIN011-Hvelrarpr, water resaLINK The Stor(nTech system is designed primarily to i Ise Used under parking lots thus maximizing land Usage for SubsurfaCE, Stormwator Management- commercial and Municipal I applications. ' ACCEPTS 4"(100 inns) SCH 40 PIPE FOR OPTIQNAL INSPECTION PORT i �. •41� 1.� .,1. I I 1��3 I i i�) - StormTech SC-740 Chamber (not to scale) Nominal Chambor Specifications Siizo.(L xWf}x i4) {' , 85,4"x 5{F.0"x 30.0" (2170 x 1295 x 762 rnm) ,• .� ,� 1 Chamber Wrage �, , — 90,7"(2200 fmo) 45.9 it'(9.30 rm") 24'(610 Rim)OIA.MAX — SC-740 Chamber (zOs mIII) SC-740 End Cap Mlnlinum Installed Storage* 135.4"(2170 rain)WSTALI-ell 74.9 it'(2.12n1 ) !. [ 1 i ) I k 74.0 Ik(j) { -r1 1 € 1 iiII, I I. les 33.6 k 1 l } 3U.L1., , (•; II ; �(111} ,I.' ) i !(�I Ripping (762 30 60 end caps/pallet t 1_...� :.._..1 ��'�-1°1 ,•:�e..._�1�.� 1.��_...r.r ti . 1.�._._I �_�:�.���..t�� _ 12 pallots/truck -51.0"(1295ll,m)-- - Typical Cross TIILINS7ALLEOCIIAIABE11SYSIEM91IAI,I.PnOVIUr- CHAMU119SHALIMki- W3:TAUMFV I.12'STA4OARO Tl IE LOA0 I"ACTORS,SPFGIFIFU IN THE AASHIO LI1F0 SPECSFI(':;thJ FOIL 11OLYE IHYLENI_(PF)GORHUGAI LO Section Befall ISIlII7(1Em-si(i11SPF(*I(7AIIONSSCCTIGr311.f2FOR L7ALLSTOnP.11VAFEnCOf.LFCTJONC11Ah.EIARS.' LiAN l l i ANU L€VG LOADS,Vil I H CONSIOCRATION FOR }l.Ub1U'TANJJr.11JLTIPE.1_VL:ISICLI PRESENCES, ---GHANULARVILLL01IAUT:1)SOIIJAW1RIA1AiE (Clot to scale) 1.1U(YUHEcS,<35;FIh1L•S. GOlfPACL IN f,"{IF><l a,m) 3!•1.2'(IU-W Hall)CLEAN,CRUSI(LD,AWILILAR STOW,- LIFTS 7U USii 57ANUAlIi)III SO(;k01[DI:WRY SFf SC•7•tu GHAMLI81T---- THE TABLE OFACCEI17ABLr FILI.NIA1LRIALS, A SOfrGEO1fX11LF:OilEQUAL-- 171VEMENT SC-140END CAI' i%///'r'7i%1//J_%.%/�.'l7,I1�i%f �l///i%/111Li;//fii//�iri//.//// t -- 4 I sxlllt sY nTH.97PIEhILPl441,-sir T '1G III 111 - IIISTTI C r!1)t1 VIllf lLy1JA71xfi31t � 111"(•lii4 snrn){X•1.10 iIllil) I: III I i I (Ili ASF Ct)Vl'll1[7 4 1A10i t17 1,1 N. MAX. (!F h( L) G'(fi nn )MIN. ( t 1 40. F - l�, -III I I'I i I} ) ' J- •,1 7 r ' 'V �a �7{i�%rj � f• �ts J� ! 36'(162 inIn)SC-14(1 �f ys } iL 11 I: rjf/ r..T s// "r�s1' 1.Jjj11�F q 1,ysi1 �. r'V . ? r(f�Yl� 'toRu1DEURFAINED 7 _ 1 aFi I:r i�(err}t€r 1t7 !s{sc II} ili iil lil III III :lll Ill 'lll III III III` I fl 111 III III III. I!i lil Iil RYnU,91ONENG11rr:I1 III. Ili iil 11.i ili �ii III _III III II,I:-.I a.. �Iil II I. III !II III —III IIII t;'{Iran(»°')''"". lil,Ill_I11„I11,,,1i1,•.IIf fEi :!i iil III 01"WIN FNGINilo S iiFspaslrrFOR O sI^Nn iNIII[[))III[[))I rI1 1rr. EhU i1HF5 BEARING GhhC11Y 6' A In. L r , I;t"F.1R7,{30finlm)TYI. OF SIJLIGRAUE SOILS' I MS GLOSS SCGH(N OFIAILS 1 HE fiEOUDIEMEN€S 14ECESSAIIY IO SAUSFY HIE LOAI.I FA[lOns,SPC(:1FICE7III 111L"AASII[U L€1FkJ UTi1tIGEi -- HES!GN SPECIFICATIO7J5 SECTION IP.,2 FOR EAHTH AND LIVE LOADS LISING STOI1h3 IUNI CHAlZrICLSF MAI)@ IN 1NE 1.115. E 1 SC-740 Cumulative Story a Volumes Per Chamber Storage Volume Per Chamhor 0 I Assumo,s 401 Storm.,Porosity. Calculations are i3asOd ; Bare tihaltthor and Static Upoo n G"(152 purr)Slow,6aso Under the Chambers, CItaIlTbor ', Siotte Foundation Detail i j Storage in.(ItHtl) i i n. k it,(n13) 6(160) 1 12(305) 1 18(400) i a, !,i}at to Er r 4 r3k[ i e r StounToch SC-740 ( 45,9(1,3) 6 14.9(2,1) Nnl(r:Storage votunres are in cubic feel per chamber Assumes 40 porosity for tho tl_(1t#E}7) p 4'}.43(#(1 3(10} 74�IU(1 I21) Sione.phis the chamber volume. 41(1041) 45.90(1,300) i 73.77(2.089) 9 51sm( Amount of Stone Per Chamller 40(Uri{;) 1',;,,#0(1,300) � 72,G4(2.051) � - I l 3r1(9T)1) I ,. 1 ,, r E Stolle Foundation Ueptll i .CiWer 4J JO(l 300) I 71.52.(2.025) 38(965) ) 15.90(I 3[IU} j 7U.39(1,9U3) EN 1 a1IS(cum YAMS) 0° � 12" i 181, 37(948) _ 45,90(1,300) .l, 69.26(1,961) StarmToch SC-740 3.8(2.fi yd"') 4.6(3.3 yd I b.6(3.9 yd') 36(914) 4'00(1.300) E 68.14(1,929) I - i METRIC KILOGRAMS(MI:TCRI) 150 u1m 306 mini 4G0 min 1 35(889) 45,65(1.206) 66.98(1,897) 34(864) (1.2(14} 65.7,1i(1,862) StormTech SC-740 3450(2.1 m3) 41 YO(2.5 in') 4490(3,0 Ins) 33(8313) �i!�.41 ;1.2t)�>) � G4.�s(1.E3��>) � �Note:Assumes 0`{150 minj of clone above,and 6cttmon rh�rmbeis, I 31(813) ! 14.81 (1.1U3) b2,J1(i.1133) Volume of Excavation Per Chamber ! Stone " Depth 30(762) (1,689) 6"(150 mm) 12 (305 mm) 1 8"(46U net) 29(731) 57.89 1.639) V 711 2t) 40.tif#(1 15 i) 5G.1#i(1.!iE37) i StormToch SC-740 ; 5.5(4.2) $.2 (4,7) 6.8(5.2) 21(686) 39.54(1.120) Ei4,17(1.:;34) I I Note:Volumt s are in cubic yarns(cubic woofers)per chamber.Assumes G'(150 mm) 26(10) '113,18(1.0811 52.23(1.41`9) of sepa+ation between chamber roles anti 18'(460 runs)of cover. The volmno of 25(635) f 36,14(1,040) 50,23(1.422) excavation will varyas the depth of the cover increases. 24((i 10) 35.22(0,911) t 48..19(1365) I 23(5134) 33.64(0,953) ! 46.11 (1.306) STftP1Q4fi13 LIMITt:O WARRANTY OF STO[IMUCH LLG("STORMITC11"):PRODUCTS fr 31,99({#,9t)6) 44,00(1,14t})._. A ihr;I mW,id Wnrr:fn! 1 l tiros wkl [Olio;5'rnrnl,wh Olmoltsr,:�ur:I rnJ rhrl:an'tnul3ua31rr:d ( 1 Srl'r Y 1 E 21(533) ! 30,njo'858) 41.85(1,185) by in 1110 crl;i.n'll OiriellmoF tllut'purr:h.r:.urI, l ltn ah"Illw:l"and t!rt[]pfairr; r i -- -- If,,i r:lef bVoi/ref"3n'ti 19 1E33 26,14 0.7J7 37.41 1,06 ( 1 l 20(W11) 1 'm.s4 O'E3VEi 31'Ea1(1.123) {IS) Ih .huelunri inlr.[lydy Ol lilt)FfOdoWs,i'aler h,altdlritl'Jri1:Ily ill:Fr'Pi1rll'YIt(:1!vr>tli SSarOdt+r'li r: (. ) r i _ vrlrilnn ut>,I 111!flow us-',Insrhurt5 al Ihr•Iiuw of inslrailnfun,uue voutriu?,:ri In Ill,,1'+ur;hirvxu;uhnn,,l ' ( }.. � ( .. ..... � dr.<.Ir..ILtVft::ntaU+n,'lt rms,Y:a!aancYl»n lct(.rn {I)yew Irvin ihc [rtln of ptcrr,t.6h;tirl r dr•. i1 1413({.105) 35.23(O.,J1 tho F!ltt llsa';,er!,hall prnvirtt+i,lr,lln lirh r7rtlt untlittt 1 1 7(432) jr3,00(0.651) 32.9- G(0,939) UniSf:u'.v uerf yIIoI JI_ar:d da!r ri 31 i!OnnTCch c[Ipc r tl hP.ulrlii.idrr:,ydfun Inrt rykw dcTuct n ruI (i"!nA I 16(r 06) 1 I.illl((),596) 30.68((),869) I sauna lecll xp,n.10_;u113iy luphr m stl:lorIh t rt Prntiur,l'.du![Iwlwll by Str inle(11 to hi+ hh - rrin•c,bid fx.vrra[Hry Ih`ti i and !!Waan.nly.Ih'.supply nr 3i.pitu:ru;..nl Int;ilu I. i:kwt:u is . 15(381) I low(O.J41) i- 28,36(O.803) ilkt rr10:dy M Vorr•i+(3•:t. rrr lsraa:heS of Ihr;1 p imlln(41tr73lra+,4Y :Sbtrnlerl!�..Irri15J ly . -cifirlilly K 14(.35(i} 11r0fi(0.484) 2fi,l)i{U,1.31) I r:xr�irl�IO lit„"WA of rr:rr,Y,as:ln(1/el rrtcl:al:,rOn ttI ih,k rr<rrril[,n: 9 (I I') THIS LIMITED WARRANTY IS EXCLUSIVC.711EnE ARE NO OTHER WAHRANTICS WITH 13(330) [ Vi.04(0.426) 23JA(0.670) NCS('CCT TO Till PNODUm,INCLUDING NO IMPLIED WARRANTIES or 42(3(}5) 12.97(U.3G7) 21,31 (0.13013) NIFRCHANT-AUILirY OR OF F(TNV$S FOR A PARTICULAR PURPOSE, - r .. r- l- rnicdYr,:rrsrilynnlyapplrrchih,•f'ra,rr:<;_t,1:•-n11I's:a•:u;ybdb•tlnln :tnglrrlaycr 11 (279) 10.87(E1,31J.3) 18.92(O.J3J) UNDER NO CIRCUMSTANCES,SHALL THE PRODUCr?•I'r<xha,TS UG INSTALLED IN A j 10(254) E3,14(E►,24() 1(i,`i1 [(#,4GE1) MU1.TI•LAYEn COUNGURATION m 6,5E3 0.tl'36 14.09 0.3(99 ! ;I] [ { nuir+.il Ir ti.[i ,itdrr<.1 ly lu r.h,rn 1 !I I -I b rt t'y.33i,di! tr y m pu,ur i..., (�-. ) ? ( )...... ......... ..(. ) r I't xlo,:!I I i. 4 risult,ti S'htr3unly 1 f I mrl,tPd� ,rrr;tnty tl .tint:plrly in.+OY f ',r,a a rdher t•`sn ! O1lI f nruhy. r 8(2t1;i) 4.41(0 12}) 11.66{0.33(1) !r !-nil, r•�r t t ra.!},rr.-.-h II llr'rin(rtit 1.t Lab br thr#uu I r-.:,r nr hria y 13r.u1 p rriy for prorl- 1(178) 2.21 (0,063) r 9.21 (0.264) t I i rh ALy rf t ui . .LI n,urrvutl fr.rn Ir'rr rl.:•u1sl h!Irrr nl w br;lAl!drn•,..i El f'nrrin't: nr 6(452) C ...... O.._.0 6,11}(0.191) € Ih n 1 itl rihr[q.rld ar r rq:e'ri l t d r,Ili:irurr I_r r 3 F r -hrli;drnn rtl Ihn pr.drr L: I`uI IIw,Lan I.td v rrraflly 17-ppl J Ill' €1wfu b inn.t 1 �rr7.•!lq d Irl-u.Ci#rl-ant.o tnih I I q-r•:ur6• ' U i 5.63(0.160) Poi.:r�r prn•a!lry Jolo,snd lu:ai r.adt..,,tt14 1,ii+r.Ittl}I+..:9tfa l rr:, :w:1,,Inur.Irr,1L,,.tits(rI in• . _ t .. r:)II'r'u,in 5m,iuV;hOn-. 4(102) (Stoll8 romidMion Q 1 4.it (I1 125) E U 01) IL(ELIMITEDWAHiIANTYDOESNOTEXTENOTOINCIDENTAL,GONSEOUHTIAL,SPE 3(16) 3.38 t - CIAL OR INDIRECT DAMAGES.STORNITLCH SHALL NOT BE LIABLE FOR PENALTIES On LIQUIDATED MATFlI1ALS;OVE HEAD COSTS:on OTHER LOSS Oil rK ENNCLUDING LOSS Or-PRODUCTION S,k INC�RI TI;LABOR NO FLED BY THE () ( 1.13(0,032) I P(IIICIIASER Oil ANY THIRD PARTY.SPCCIFICALLY EXCLUDED FROM LImam WAR- . _ ... _....s RANTY COVELIAGE ARC DAMAGE TO THE PRODUCTS Ili mom 0Nl}1NAIIY WCAl1 Role;Add 1.l3 cu.!t.(0,032 r1t')of sloraUc for each additionalAND TEAR;ALTERATION,ACCIDENT,MISUSE,ABUSE Olt NCOLCCT;TRIG PRODUCTS RCING SUUJ(;CTEO TO VEHICLE TRAFFIC on OTHER CONDITIONS WHICH ARE NOT indi(25 mm)of stoma tolmdalrolr. mlimi mo UY STonhiTECH'S WRITTEN SP6CiricATions Oil INSTALLATION INSTr lUC- TIONS;FAILURE TO MAINTAIN THE MINIMUM GROUND COVERS 8Ef FORTH IN TILE INSTALLATION INSTRUCTIONS;THE PLACEMENT OF IMPROPER MATERIALS INTO THE PRODUCTS;FAILUFIE OF THC PRODUCTS DUE TO IMPROPER SITING Oil IMPROPER SIZUIC:OR ANY OTN1=R EVENT NOT CAUSED BY STORMTECH.THIS LIMITED WAH- RANTY REPRESENTS STORMTL-CH'S SOLE LIABIL11Y TO THC PUBC14ASEII FOR CLAIMS IIELATCD TO TI'!E PRODUCTS,WHETHER TI4C CLAIM IS IIASEO UPON CON- TRACT,TORT,Oil OTHER LEGAL THEORY. 2060aver Read.Sidle 104 CNelNINI eld 10110e0Cut�'i wim 8SU, N.8188 888.892.2694 j tax 866,324,8401E fax 860-Ei29-8040 mvv.slorritlechmill Prinh,d in U,S.A. (<)C(ipysighl.All rigtils reserver!.SternJech LLC,2007 Printed Till recycled pastor � S16-090508 1 ' Storm ie'it;h DetarFiar:•Rv;-rnion•V&Iter 07a1n/ A divi:,on Cf _ b f1EQL9EEi� . m,.I ^ MATERIALS AND EQUIPMENT LIST ® 'StormTech solid end caps yand�pre-cored Vtend caps ® Acceptable fill materials per Table 1 e StormTech chambers Woven and non-4vcven geotextiles o Storm lech manifolds and fittings IMPORTANT NOTES- A.This installation guide provides the minimum requirements for proper installation of chambers. Edon-adherence to this guide may result in damage to chambers during installation. Replacement of damaged chambers during or after backf lling is costly and very time consuming. It is recommended that all installers are familiar with this guide;and that the contractor inspects the chambers for distortion,damage and joint integrity as work progresses. B.Use of a dozer to push embedment stone between the roves of chambers may cause damage to chambers and is not an acceptable backfill method. Any chambers damaged by using the"dump and push"method are not covered under the StormTech standard warranty. C.Care should be taken in the handling of chambers and end caps. Avoid dropping,prying or excessive force on chambers during removal from pallet and initial placement. l3 I . m _ r . ky Excavate bed and prepare subgrade per Place non-woven geotextile over prepared soils Place clean, crushed. angular stone foundation engineer's plans. and up excavation walls. &' (15a mi m i) min. Install underdrains if required. Compact to achieve a flat surface. Cali Siorr nlech ai 888.8322694 for technical and product information or visit www.stormtech.cor^ � C*?, r*ffik W ,V g 4 meZt Y 4 A J, WI; EW q jq 1.4 7 Install manifolds and lay out,mover scour Align the first chamber and end cap of each Construct the chamber bed by overlapping the I mbers by geotextile at 7nietrov.,s ;mini. 12.5 ft.(3.8 m)] at row with inlet pipes. Contractor may choose to chambers lengthwise In rovis. Attach cha each inlet end cap. Place a continuous piece postpone stone placement around end chambers overlapping the end corrugation of one chamber or (no-seams. double layer) along entire length of and leave ends cl rows open for easy inspection to the end corrugation of the last chamber in the rove fsclat&F,Rcw(s). of chambers durino i1he back-lill process- Be sure',hat the chamber placement does not exceed-.he reach cifthe construction equ;prnent used to place the stone. 71 0 Y`,Y�11 -N M1 A. 41, IV UA A L 4: A IL L 1, L Lift the end of the chamber a few inches off the 24"(600 mm) inlets are the maximum size-that can fit Drape a strip e ADS non-woven gectextle over the ground. With the curved'lace of the end cap facing into a SC-7401DC-780 end cap and must be prefabri- row of chambers(not required over DC-780). -Fhis is outward, place the end cap into the chamber's end cited with a 24'(600 rrm) pipe stub.SC-31 0 charr,- the same type of, non-vioven geotextile used as a corrugation. bers with a 12'(300 mm) inlet pipe rnust use a separation layer around the angular stone of the prefabricated end cap with a 12� (300 mm) pipe stub. Storm7ech system. ............. 7777'. I'd 41 m Mt Initial embedment shall be spotted along the centerline of the chamber evenly No equipment shall be operated on the bed at this stage of the installation. anchoring the lower portion of the chamber.This is best accomplished with a Excavators must be located off the bed. Dump Trucks shall not dump stone stone conveyor or excavator reaching along the row. directly on to the bed. Dozers or loaders are not allowed on the bed at this time. T 5-7 x7al= UNEVEN BACKFILL EVEN BACKFILL PERIMETER NOT BACKFILLED PERIMETER FULLY BACKFII I ED Backfill chambers evenly.Stone column height should never differ by more than Perimeter stone must be brought up evenly with chamber rows. Perimeter 12-(300 m m) between adjacent chamber rows or between chamber rows and must be fully backfilled, with stone extended horizontally to the excavation wall. perimeter. Call Storm-Tecr)a-888.892.2694 4c,-Lec"inicae and prc-duc-,inicrrna-,lon or visi-, 3 ............................................................................................................ .................. .................................................................................. ...............--............. 0 Y.1i 11% �Mt Q 'g�0 -'S Al, W ",Y S- 'W M R, M Continue evenly backfi'fiing betveen rov s and around perimeter until embedment Small dozers and skid loaders may be used -,io finish grading stone backfill in stone reaches toes of chambers- Perimeter stone must extend horizontally to accordance with ground pressure limits in Table 2. 7 ley must push material the excavation;wall for bo-Lh straight or sloped side-walls. Only after chambers parallel to rows only. Never push. perpendicular to rows. S.orrn Tech recom- have been backfilled to top of chamber and with a minimum 6" (150 mm) mends that the contractor inspect chambers before placing final ba--k,,*iH..-'1L,1y of cover stone on top of chambers can small dozers be used over the chambers damaged by construction shall be removed & replaced. chambers for back filling remaining cover stone. ISCLA7CP ACS p", CCVFR EN,-RE CE-OSY\ iET CS WT N--W0VB%CEO M MLE D E--- ,ram------ t7—'mi MIN L7-- MAN H 0 ........... A5 M M S, 2R SUMP DEP-1H S. TWO LAYEAS 07 An's 3151'r4"'OVEN BZ-',�VEEN FOUNDATION STONE AND SC-uc a DC-7$0-5-i1,5 mj MIN V40e STRIPS Install non-woven geotextile over stone. Geotex,"ile must overlap 24' (600 mm) SC-�31C- t1-2 m)I'll,%'MOE S-1-F-UPS min.where edges meet. Compact each lift of backfill as specified in the site mm)MCPE ACCESS PIFE NO—,=:NON-WOVSN GS07SXTFL,E OVER DC-750 SC410 (300 r-m)KDPEACCFSS PIPE design engineer's drawings. Roller travel parallel with rows. 1SrLAT0FZRCV-1 CHAJIM5ERS IS NOT REQUIRED, USE FACTORY PRE�ABRICATED ENO CAP Call StormTe& at W8.892-2694 for technical and product information or visit,vAvw.storrrtech.corn 4 Table 1—Accepiable Fill Materials Figure 1—inspection Part Detail O Final Fill. I:'._.. ! ;t_f t gin, 1. :.,-,_ n E . ct,,c .. a."ta's. - C - n C CO Initial Fill. ar';_,.ri_�1�'E 1.. �... r:_ r - y TL_J,1-._.._ f'1 I r� _. 'r y _.... cov= C .rC 4L r � FAR'.zr,z;.c• I°.. .,._.._ _a .�I ....- I::.i...-�_.P'i. n .. ;1. ONCRcT_SL._. �o _ 6.,aPf' G ;_:+.x�c FLEX8'i0?S 7L'Y:C ® Embedment Stone 7 zc _ F , I � `l. _.....�...._ Pn"1 T 70 BE C_EXTEr C C% CCRRUGAr.ON GREsr �A Foundation Stone: w L r J.a1ULr5-•1 . y`5 .v 5 PIan-, ` i n.l r, _sin t*,Uu 4 �L C _.1',;���„�i�Gr "C Sllu- 1C[rlNtaE_1..,,iS1 rUL l r„ _�' - Sc7 n =3f.�.cz3.57 -v�a-_rr._ .,P - 9rrzj. t r f n(-rt G-e rJLnt-r. (-K m.m-5G mr) I Figure 2—fill Material LQLa�ons AZ G-asv E -vCN-V ti�ti ti-o >MS 2 ALL A:-,0�ND CLJtV.C.R;:StiE:,ANSULiR 57 A_,i\R53:_z.YcAS PAV=:.5_N7 r-.AY_R;OESIGNEP FpCR?rcr CFi - ' l �(CF�EESLC 71 ) vrvf.:. i, �`� O ! Lam \ !ill tiJ , SG7:�:gDG`eC-3t,•';eCr.^i '`a r � t` k ,.\t`. � �,`� 1��.= so-s,a-•=o r-c..--,r i A - any SoWmaterial Can ��P �e laced in layerV J:P7F!OF 570NE 76 SE^vTcFr.tiNEC p L the trnished t� GE SIGN rN- n �o e f�I� 3Y S E 6�5 Gtv EI�C _E. p I SC-7404 SG- 10-n(1K rr�m)MIN grade,.Most pavernen', ,r roo mm)MIN E�0 �G7 a_c-fC3a.rm)urN subbase soils can b- used to replace the r,aterials requirements i159 mm)ra!N t�(1-!,0 nm)":'Yp Ci Jaye:'c or'V at the design erigineees SG74P S 067eO-51-(1'295 rqm} discretion. SG310-W(885 mm) Call SmrrnTe&ai S88.892.2694 for technical and product informa:iorl or visit v,^,wd-stormtech..co^ Table 2—Maximum Allowable Construction Vehicle Loads5 ,m.,.© 1. c7; �r IC- L.,',a_� I �4, Table 3—Placement Methods and Descriptions ®FInj Fill .A variety of cIacemen methods may ba 36'i903"mm €m irnum 1OoierS to push Garailel Iv Rolle :ravO ua aIIeE IO r v.'S„ �3 Trial used..All cons',ructior loads must rot cover repuired for lump G,r,urti!35'(9COmmi only un 136" -O�mrn! ADS-Terms and Conditions of Sale"are available on the:ADS website, exceed i-e m ximurF limier in Tabie 2. lruc: to dump over oc:mpa..3"u CQv-,r is ccmp,,,tLu coder s h^,'tv.ads-"ipv-CE)FIi. Ci12m�`Gi5. -eaChed:` rzach d. AdErnced Dm nage Systems.the ADS logo,and the green stripe are regiVered - � trademarts of Advanced Drai_nagg,Systems. ®Ir iat Fll Excavator uositionep 7t_ed Tear Asphalt Car be dump-no rote Sm II LOP T ,� � � Use dynamic fore 1 miter Starm7 ch and tFa Isol l r Row Ire f i�$E r ei mend,.U.Small ex✓valor all 4':el}1 r vas Oe•^Gm ted I llr r r a 6 0 a c0 i r d trademarks fiatnS C $CInci�cC cal n sp re Cc� _ un+y-Per C[fCLa ,Id° f t rm l h,to o;1a; .rerS. m811;iuZ..r atl6'11YG. pav2r^ic t s:,b�3Se reaCiir.� ,� t Ir p f i 1 oLUa,-vN.r.�7 ,�,, n M, 4 90113 0 91113 R o r }aC to to v, e�rs. j Val �1201S Aivanced Dra^raac Syste;��s.Inc. E:. ._._l ;I 13 al a1 v h r C rc 5�^Iti'. rz O LrCeo e t C tiUipCen_ 11o..cd C - iV 1.- IICadSal:o .a '0 .F_. o� n! i`C.ollt .^`,:Z ners.I sa ex%alaio-o-S.0 .u; tyor tv' E,,:St b:ola-z-Zd a l Z, -. fS,.-',.f n Co_._oRcn o:C„d G. C t,0 C ._ '1, f a S i, 1 C er: 5t . vt-,t,. C;,R C rU _'AN...,.-�v V to r: vv ..r.'.''.I'.,n r !r C_ ,--VI. w�all �:� I v or . r1.. J. .---J C,ll Storr-:Teen SW892.26 fey .=c"^'cal ar)d , roduc-:nzorra_icn or visit'r,t ,'.s armtec�.co^ 6 SOIL SUITABILITY FOR STORMWATER MAMAGEME&IT SYSTEM SITE-: 1725 Turnpike North Andover DA T E:2I6119 SOIL EVALUATORISOIL SCIENTIST: Steven Eriksen Deep Observation Hole Nurnber: 1 Soil Soil Matrix. Redoximorphic Features Soil Coarse Fragments Soi(Structure Suit Horizon/ Color-Fvloist - (mottles) i exture %by Volume I Consistence Other Dept Layer (Munsell) 1 (USDA) i (Moist) (in') Depth Color Percent Gravel Cobbles i 1 I &Stones j 0-24" ! AP 10 yr 212 fsl i 1 loose 1 � Pavement, E � ; crcanics, 24 48 C i �10 yr 4r4 j m-f sand nlf ' loose Single urair� rill 148-S6- C2 11 2.6y 414 i ' 1 Ls 10 1 Very, friable ! Boulders, cobbles j ` r Additional Notes No observed water, boulders at depth_ Soil Evaluator Exam 11194 Soil Scientist Jars. 94 Signed: � �-- SOIL SUI T A131LIT Y FOR ST ORMWATER MANAGEMENT SYSTEM SITE: 1725 Turnpike Street North Andover DATE: 4123119 SOIL EVALUATOR/SOIL SCIENTIST- Steven Eriksen Deep Observation Mole Number: 1A Soil Soil Matrix: Redoximorphic Features j Soil € Coarse Fragments Soil Structure I Soil Depth f Horzord Color-Moist (mottles) Texture °io by volume I Consistence Other (fin_} Layer I (Munse[l) (USDA) � i (Moist) i Depth Color percent Gravel Cobbles Stones 3 I 0-40" 1 Fill 1 10 yr 2j'2 ' fsl loose 1 E 40% C1 2.5y 414 ( � L s&g 10 loose � Single grain I 168" F j 3 I � 3 t � s I i j I � I Additional Notes No observed water, no ESHWT Soil Evaluator Exam 11194 Soil Scientist Mara. 94 Signed: (`/ SOIL SUITABILITY FOR STORMWA TER MANAGEMENT SYSTEM SITE: 1 725 Turnpike Street North Andover DATE: 4123/19 SOIL EVALUATORISOIL SCIENTIST: Stever Edksen Deep Observation Hoie Number: 2A Soil Soil Matrix: Redoximorphic Features i Solt Coarse Fragments Soil Structure Soil Horizoni Color-Moist (mottles) Texture ( %by Volume E Cons€stence Other ? E I (in.)�' Layer (Munsell) ; (USDA) (Moist) I [ Depth Color Percent Gravel Cabbies I I &Stones 0-52' fill 10 yr 212 loose Bs 10 Yr414 TSI loose I , I i I I i i f I C1 10 yr 515 1 L s&g i 10 loose Single grain I 1 i E i Additional Motes No observed water, no ESHI,IIT Soil Evaluator Exam 11194 Soil Scientist Jan. 94 Signed: � f� SOIL SUITAEILITYFOR STORMWATER MANAGEMENT SYSTEM SITE: 1725 Turnpike Street North Andover DATE: 4/23/19 SOIL EVALUATOR/SOIL SCIENTIST- Steven Eriksen Deep Observation Hole Number: 3 Soil Soil Matrix: Redaximorphic Features Soil i Coarse Fragments Soil Structure Soil I Horizonl i Color-Moist ; (mottles) Texture I % pry Volume ! E Consistence Other Depth Layer (Munsell) i (USOA) j f (Moist) ln' Depth Color Percent Gravel( } ' Cobbles �----- i i &Stones f 0-44" fill 10 yr 212 tsl j ?o0S 3 a4"- I Ci 2.5y 414 I I L s&g ! 10 loose Single grain i I 15 i { 1 ( i Additional Notes No observed water, no ESHVVT Soil Evaluator Exam 11/94 Soil Scientist Jan. 94 Signed: