HomeMy WebLinkAbout2015-05-06 PACKET 04.J. REQUEST OF CITY COUNCIL ACTION COUNCIL AGENDA
MEETING ITEM #� �
DATE 5/6/15 .
i
PREPARED BY: Community Development Jennifer Levitt
ORIGINATING DEPARTMENT STAFF AUTHOR
* * � � * * * * * * * � * * * * * * * * * * * * * * * * � � � * * * * * * * * * * � * � * * � *
COUNCIL ACTION REQUEST:
Consider approving the South Washington Watershed District agreements for the Renewal by
Andersen Regional Pond project, the 7210 and 7300 East Point Douglas Road Site
Stormwater project, and the 2015 Stormwater Pond Improvements project.
STAFF RECOMMENDATION:
Approve the request.
BUDGET IMPLICATION: $N/A $N/A N/A
BUDGETED AMOUNT ACTUAL AMOUNT FUNDING SOURCE
ADVISORY COMMISSION ACTION:
DATE REVIEWED APPROVED DENIED
❑ PLANNING ❑ ❑ ❑
❑ PUBLIC SAFETY ❑ ❑ ❑
❑ PUBLIC WORKS ❑ ❑ ❑
❑ PARKS AND RECREATION ❑ ❑ ❑
❑ HUMAN SERVICES/RIGHTS ❑ ❑ ❑
❑ ECONOMIC DEV. AUTHORITY ❑ ❑ ❑
❑ ❑ ❑ ❑
SUPPORTING DOCUMENTS:
� MEMO/LETTER: Memo from Ryan BurFeind dated 4/27/15
❑ RESOLUTION:
❑ ORDINANCE:
❑ ENGINEERING RECOMMENDATION:
❑ LEGAL RECOMMENDATION:
� OTHER: SWWD CCIP Grant Agreements
ADMINISTRATOR'S COMMENTS: �
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City Administrator Date
* * * * * * * * * * * * * * * � * * * * * * * * * * * � * * * * * * * � * * * * * * * * * * * *
COUNCIL ACTION TAKEN: ❑ APPROVED ❑ DENIED ❑ OTHER
Cottage
J Grove
�here Pride andPcOsPerity Meet
To: Honorable Mayor and City Council
Ryan Schroeder, City Administrator
From: Ryan BurFeind, Project Engineer
Date: April 27, 2015
Re: Accept SWIND CCIP Grants for Improvements to:
• Renewal by Andersen Regional Pond .
• 7210 and 7300 East Point Douglas Road Site Stormwater
• 2015 Stormwater Pond Improvements
Background/Discussion
This year the City of Cottage Grove applied for several grants related to the South Washington
Watershed District's (SWWD) Coordinated Capital Improvement Program (CCIP). These grant
applications were related to the Renewal by Andersen regional pond improvements, 7210 and
7300 East Point Douglas Road site stormwater, 2015 Stormwater Pond Improvements, 2015
Pavement Management project stormwater improvements, and Camel's Hump Park storm-
water improvements. The City has received notice that the S1NWD awarded the grants related
to Renewal by Andersen, 7210 and 7300 East Point Douglas Road, and the 2015 Stormwater
Pond Improvements.
The City was eligible to apply for 35 percent of the total project costs with a maximum of 10
percent applied for engineering and administration. The Renewal by Andersen regional pond
improvements will involve expansion of the pond to accommodate proposed expansion at the
site. The total project cost for the Renewal by Andersen regional pond improvements is
$572,000, so the value of the grant that could be applied for was $200,000. The total project
cost for the 7210 and 7300 East Point Douglas Road stormwater improvements (former site of
Home Depot and Rainbow Foods) is $1,250,000, so $437,000 in grant funding was applied for.
The total project cost for the 2015 Stormwater Pond Improvements is $15,925, so $5,573.75 in
grant funding was applied for.
The SW1ND awarded the grants in the amounts shown below. The attached agreements out-
line the conditions of the grant and the value of the award.
Proiect Awarded Amount
Renewal by Andersen Regional Pond $200,000.00
7210 and 7300 East Point Douglas Road Site Stormwater $200,000.00
2015 Stormwater Pond Improvements $5,573.75
Honorable Mayor, City Council, and Ryan Schroeder
Accept SW1ND CCIP Grants
April 27, 2015
Page 2
Recommendation
It is recommended to approve the South Washington Watershed District agreements for the
Renewal by Andersen Regional Pond project in the amount of $200,000; the 7210 and 7300
East Point Douglas Road Site Stormwater project in the amount of $200,000; and the 2015
Stormwater Pond Improvements project in the amount of$5,573.75.
• Page 1 of 2
5�utir�VaShington
��..� � 2015 COO�iDINAT�D CAPfTA�.1MPROVEMENT
�f��Y��� PROGRAM CONTRA�T
Genera!lnformation(ta be completed by SWWD)
Organization , ContraciNumber ' Olherfederaloretherskate pmendment � Canceled ❑
SWWD CCEP2015-003 funds?
Yes� No� Boardmaetingdate(s} BoardmeeUnedate:
*If tont�aetamended,attach amendment form(s)to thts rontract. '
Organizatidn/Contact
organieat�on
City of Cotfiage Crove �
CantactPurson Add�ess Ciry/State - Zlpcoda
Jennifer Levitt • 12800 Ravine Pi<wy Cot�age Crove,MN 55016
Ematl ' phone �
jievitt@cottage-grove.org 65�.=45$-2890
Project Location �
Address CtryJState Ztp code
Anderson Regional Infiltration Cottage Crove �
Contract InformatEon
1 (we},the undersigned,do hereby request cost�share assistance to help defray the cost of installing the foilowing practice(s)listed
on fihe second page of this contract. It is understood thafi:
1. SWWD's Caordinated Capital improvement Pro�ram is a Reimbursement Program. Applicants will be reimbursed far the
contract arnount upon successful completion of the proJecE and subm(ssion of all required documentatian,
2. The City is responsible for full establishment,operation,and maintenanca of all practices and upland treatment criteria applied
�mder this program ta ensure that the conservation objective of the practiee 3s met and the effective life,a minimum of�.0
years,is achieved.
3. Shoufd the City fail to maintain the practice during its effective life,the City is liable to the Sauth Washington Watershed District
for the amount up to 10p%of the amount of financial assistance rece�ved to iiistali and estabfish the practice unless the failure
was caused by reasons beyond the land accupier's control,or if conservation practices are appl(ed at fihe City's expense that
provfde eq�ivalent protection ofthe soil and wafier resources. �
4. This contract,when appraved by the SWWp board,witl remain in effect unless cancefed by mutual agreement. Practices wilf be
compfeted by pecember 37..20�6 unless this cantract is amended by mutual cons�nt to reschedule the work and funding.
5. Items of cost for which reimbursemenfi is clanned are to be supported by invofces/receipts for payments and will be verifiec!by
the organization baard as pracfiicaf and reasonable. The organixation board has the authority to make adjustmenfs to the costs
submitted for refmbursement.
Update2D13
Page 2 of 2
Applicant Signatures �
The City's signature indfcates agreement to:
1. Grant the District's representatEve(s)access to the parcef where the conservation practice wfi)be located.
2, obtain all permits required in conjunctfon with th�installafiion and establishment of fihe practice prior to starting construction �
of the practice,
3, Be respansible for the operation and maintenance of conservation practices applied under this program in accorclance with an
operatlon and maintenance plan prepered by the orgariization technical represei�tative,if applicable,
4, Not accept cast-share funds,from sfiate and federal sourc�s combined,that are in excess of 100%percent of the total cost to
establish the conservation practice and provide copies of a11 forms and contt•acts pertinent to any other state or federal
programs that are contributing funds taward this project.
Uate Organization'sAuthorizedRepresentattve
Conservation Practice{to be completed by T�chnica!Representative)
The primar.y practEce for which cost-share is requested fs Anderson Re�lonai Infiftratian
P�acikeslandardsoreltgiblecomponent(sj Enslnaeredproctiea TotalProjeciCostEstimate
Construction of a regional infiltration basin (CX�9esor❑noa $572,000
Eeologleal praetice
(❑yesbY��o)
The estimated benefits of this proJect are:
Total phosphorus Captured Nltro�en Captured Itunoff Voluma Reduction
�.a-� �
Technical Assessment and Cost�stimate
I have the appropria#e technicaf expertise and have reviewed the site where tha above listed practice is ta be instalfed and find it is
needed and that the estimated benefits and costs are practica!and reasonabfe.
DaYe TechnlcalRepreseqtative .
! �
Amount Authorized far Financial Assistance(to be completed by SWWDj
The SWWD Board has authorized the following for flnancial assistance,total not to exceed the overall percent]fsted indicated in 4,
above. -
$ 200,000.00 from 2015 CCIP
EnFerprogram nameand Hscalyear .
$ frorn
' Epterprop,ramnamoandfiscalyear
$ from
Entetpragram name and fiscalyear
BoatdMeetingbate Authorrzed5 u TotalAmountAuthodaed
4/14/3.5 _ $200,000.00
Update 2U�.3
. � ' Page 1 of 2
§ou�b wa��i�ng�on
�� � : 2015 COORDINATEL? CAPITAL 1[VIPROVEMENT
���$plc� PROGRANt CONTRACT
Genera[InfQrmation(to be compteted by SWWD)
Organizatlon ContracWumbe� Otherfederalorotherstxte
funds? Amendntent � Can<eled ❑
swwD � cciP2o1�-aoz �
Yes� No� �a�dmeetingdate(s� Boardmoetingdate;
•Ifcantractamend¢d,attachamendmentform(sjtothiscoatracF. � - � "
Organization/Contact
orgahizatbn
City.of Cottage Grove
CobtactPersop Addtess Clty/SYate Zlp code
Jennifer Levitt 12800 Ravine Plcwy Cottage Grove, MN 5501.6
'Emall •phone
jlevitt@cottage-grove.org &51-�58,289Q
Project I.oca�ion
Address City/State Zfp code
Flome Depot Retrofiit Cottage Grove
Contract information
f{we},the underslgned,do hereby request cost-share assistance to help defray the cost af instafling the following practice(s}listed
on the second page of this contract, ft is understood that; .
1. SWWD's Coordinated Canital Imarovement prograro is a Reimbursement Pro�ram Applicants will be reimbursed for the
contract amount upon successful completion of the proJect and submission of all required documentation.
2. The City is responsible far ful!establishment,operation,and maintenance of all practices and upland treatment criteria applied
under#his program to ensure that the conservatlon objective ofthe praceice is met and the effective life,a minimum of�.0
years,is achieved. �
3. Should the Ci#y fai!to maintain fihe practice during its effective life,the City is liable to the South Washington Watershed District
for the amount up to�.00%of the amount of financfaf asslsfiance receivec!to install and establish the pract[ce unless the failure
was caused by reasons beyand the land occupier's control,or if conservation practices are appiied at the City's expense thah
provide equivalent protection of the sai!and water resources.
4. This contract,when approved by the SWWD board,will remafn ln effect unless canc�(ed by mutual agreement. Practices will be
completed by December 3�..20�.6 unless this contract is amended by mutual cansent to reschedule the work and funding.
5, items of cost for which reim6ursement is claimed are to be supported by 1nvolces/receipts for payments and will be verified by
the organization board as practical and reasonable. The organixation board has the autharity to make adjustments to the costs
submitted far reimbursement.
Updafa 2013
Page 2 of 2
Applicant 5ignatures �
The City's signature indicates agreement to; .
1. Grant the District's representative(s}access to the parcef where the conservation practice will be located.
2. Obtain all permits required in conjunction with the installation and establishment of the practice prior to starting construction
of the practice. -
3. Be responsible for the operation and maintenance of conservation practices appfied under this program in accordance with an
operatinn and maintenance plan prepared by the arganization technical representative,if applicable.
4. Not accept cost-share funds,from state and feder�[sources combined,fihafi are in excess of 100%percent of the tota)cost to
establish the conservation practice and provide copies af all farms and contracts pertinent to any other state or federal
programs that are cantributing funds toward this project.
Date OtGanlraHoD'squthotizedRepresentative '
Conservation Practice(to be compEeted f�y Technicat Representative}
The primary practice for whieh cost-share is requested ls_ Home Depot Retrofit
Practicestandardsoraltgi6lecomponent(s} � EnglneeredPracNce TotalProjectCast�stlmate
Installation of underground storage and fiitration system i�vesort��o� � $1,250,000
�cologtcal proctice
, (�yas or�no)
The estlmated benefits of this project are:
7ote(Phosphorus Captured Nitrogen Capturad R�noft Volume Reduction
7-�
-Technical Assessment and Cost�stimate
E have the appropriate technical expertise and have revlewed the site where the above[isted practice is to be installed and find it is
- needed and that the estimafied benefits and costs are practical and reasonable.
Date Techniwl RepreseptatfYe
! "1 H-
� / f
Amount Authorjzed for Financia[Assist�nce{fio be completed by SWWD)
The SWWD Board has autharized the foJEowing for financial assistance,total not to exceed the overall percent listed indicated in 4,
above.
$. 200,OOd.00 from 2015 CCIP
Enter program name and fiscal year
$ fram �
Enterprogram name and fiacal year
$ from
' Enfer program aame and flsca�year
BoardMeetingPate Amhorized ' ure , TatalAmountAuthorized
4/�.4/�.5 ' $2Q0,000.00
. Update 2013
Page 1 of 2
��u�h 6V�shfn�ton
� � �` � _ 201.5 COURDINAT�D CAPITAL IMPROV�'M�NT
�������� PROGRAM CONTRACT
Generat Information(to be completied by SWWD}
Organization �ontraaNum6er Otheriederalorotherstate Amendment � Cancetad ❑
SWWD CCIP2015-00�. �°"as'
' Yes� No� Boatd meetln�date�s)• Board meetfng date:
`]fcontractamended,atfachamendmentform{sJiothiswntract � � ---
Organ ization/Confact
Organizatlan
City of Cottage Grove �
Cohtact Person' Address C[y/State Zip�ade
Jennifer Levitt 12800 Ravine Pi<wy Cottage Grove, MN 55016
Ematl . Phone
jlevitt@cottage-grove.org 65�.-458-2890
Project�ocation
Address • CIryJState 21p code
Pond CPS,Pinetree Aond DeWeloprnent Cottage Grove
Contract Information
I{we),the undersfgned,da hereby request cost-share assistance to help defray the cost of installing the following practice(s}listed
an the second page af this contract, !t is understood that: .
1. SWWD's Coordinated Capital Improvement Pro�ram is a Reimbursement pro„�eam Applicants will be relmbursed for the
contract amount upon successful compfetion of the praject and submiss(an of all required documentation.
2. The City is responsible foC full establishment,operat(on,and maintenance of alI practices and upiand traatment criterfa appiied
under this progran�to ensure that the conservation obJective of the practice is met and the effective life,a minimum of 10
years,is achieved.
3. Should the Clty fail to maintain the practice during its effecfiive lifie,the City is liab)e to the South Washington Watershed District
for the amaunt up to 1ob/of#he amount of financial assistance received ta install and establish the practice unless the failure
was caused by reasons beyond the land occupier's control,or if conservation practices are applied at the City's expense thafi
provide equivalent protection of the soil and water resources.
�F. This contract,when approved by#he SWWp baard,will remain in effect unless canceled by mutual agreement. Practices wil]be
completed by I�ecember 31.20�6 unless this contract is amended by mutual consent to reschedule the work and funding.
5. Items of cost for which reimbursernent is claimed are to be supported by invoices/receipts for payments and wlli be verified by
the organization board as practical and reasonable. The organization board has the a«thority to make adjustments to the costs
submitted for reimbursement. �
Update 2013
Page 2 of 2
Applicant Signatures
The City's signature indicates agreement to:
1. Grant the District's representative(s}access to the parcel where the conservetion prac#ice will be located.
2. Obtain all permits required in conjunction wieh the installation and establishment of the practice prior to starting constructian
of the practice. ,
3. Be responsibfe for the operation and maintenance of conservation practices applied under this program in accordance wifih an
operation and maintenance plan prepared by the organization technica)representafiive,iF applicable.
4. Not accept cost-share funds,from state and federal sources combined,that are in excess of 100%percent of the tata!cost to
estabfish th�conser-vation practice and provide copies of all forms and contracts pertinenfi fio any other state or federal
programs#hat are contributing funds toward this project
Date Organfzattan'sAuthor(zedRepresen[ative
ConserWation Practice(to be completed hy Technica[Representat3ve)
The�rimary practice for which cast-share is requested ls Pond Maintenance
Yract(cestandardsorellg�blecomponenl(s) Engineeredproetice 3otaiProjecFCoskEsilmate
Pond Maintenance including removal of accumulated sediment,vegetation (�Yasor❑no> $15,925
Ecotogical practice
management,and inlet stabilization {❑yesor�no}
The esfiimated beneflts ofthis proJect are: '
TotalPhosphorusCaptured NitrogenCaptured RunoffVolumefieductton '
Technlcal Assessment and Cost�stimate
I have the appropriate technical expertise and have reviewed the site where the above listed practice is to�be installed and find it is
needed and that the estimated benefits and costs are practical and reasonable.
Oata TechnicalRepresentative ,
/ �
� Amount Authorized for Financi�l Assistance (to be campleted bySWWD}
The SWWD Board has authorized the following for financiei assistance,total nat to exceed the overatl percent listed indicated in 4,
above. '
� $ 5,573.75 from 2015 CCIP
Enterprogram name and flscalyear '
$ from
' EtlterpYogromnameandf(scalyear . � .
• $ from
Enterprogtam name and flscalyear
BoatdMeatingbate Aothorl¢ed ature TotalAmountAuthorizad
4/14/15 $5;573.75
Updata 2013
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Coordinated Capital Improvements Program (CCIP)
Request for Proposals and Application
2015 �lpplication �`ycle
Return to: South Washington Watershed District
2302 Tower Dr.
Woodbury, MN 55125
jloomis@ci.woodbury.mn.us
Due by: April 3, 2015 at 4:00 p.m.
���I"�1��
As a result of developing and implementing its water resource management plan, working with local
government units within the watershed on local water plans and capital projects, and carrying out its
permitting program, the District is aware of the challenges posed to sound, comprehensive surface water
management by existing urban development. Existing development and impervious surface within the
watershed constructed at an earlier time may not have applied due attention to minimizing and managing
stormwater impacts under pre-existing regulatory conditions. Stormwater management in these areas
may be improved through retrofitting and during redevelopment. However,space and available options
often are constrained and measures may be expensive.
To facilitate actions to improve stormwater management in existing developed areas, the District
administers a Coordinated Capital Improvement Program (CCIP)to provide financial assistance to local
land use and public works authorities for water quality improvement projects. The CCIP seeks to:
• Facilitate local government units within the District to explore water quality improvement
opportunities and incorporate those opportunities into routine infrastructure operation and
maintenance projects;
• Promote closer collaboration between local units and the District on water quality improvement
efforts as an element of capital improvement plans;
• Foster stormwater management innovation and create demonstration/education examples; and
• Defray local costs in the broader,watershed-wide interest of improving water quality.
Applications are now being accepted for 2015 project funding. Awarded projects must be complete
before Dec. 31, 2016. Grants may be awarded for up to 35%of the total project cost. CCIP grants
are funded by stormwater utility fees, and therefore are allocated to projects in the SWWD
Management Unit where the fees are collected. Up to $500,000 in CCIP funds will be allocated to
projects in the South Washington Management Unit for 2015.
�11�1�3111$�
All municipalities and county agencies proposing projects within the South Washington Management
Unit of the SWWD are eligible to apply. Capital improvements and maintenance projects are eligible.
New and redevelopment projects must provide treatment beyond what is required by SWWD standards
to be eligible.
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Applications will be evaluated by SWWD staff to determine overall water quality benefit and will rank
projects based on their cost/benefit. Funding allocations will be determined by the SWWD Board of
Managers at their April Board meeting. The Board reserves the right to deny all applications.
All grants will be awarded contingent on approval following SWWD development review. Project
designs must meet all SWWD standards and follow guidance provided in the SWWD standards manual.
Development review applications for CCIP funded projects must include a maintenance plan for SWWD
review. Grantees will be required to enter into an agreement with SWWD. Payment will be made
following completion of the project and submission of final report to consist of as built plans and
itemized invoice detailing total project costs.
11���1#�ll�
Contact John Loomis at 651/714-3714 or iloomis@ci.woodburv.mn.us.
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. 2
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2015 SWWD Coordinated Capital
Improvement Program Application
Applicant Information
LGU: City of Cottage Grove
LGU Representative:Jennifer Levitt
Address: 12800 Ravine Parkway
City: Cottage Grove State:_ MN Zip Code: 55016
Phone: (651)458-2890 Email: Ilevitt@cotta�e-�rove.or�
Project Location
Project Location: Renewal by Andersen
Watershed Management Unit: South Washington Management Unit
Primary Waterbody Affected: Downstream PWI water body,wetlands, and the Mississippi River
Project Description
The Renewal by Andersen business, located in Cottage Grove near the intersection of Jamaica Avenue
South and 100th Street South, is looking to expand their building and parking lot. As a result from this
expansion,they will also need to upgrade regional pond TG-P17 to accommodate the increase in
impervious area to meet the South Washington Watershed District and the City of Cottage Grove
requirements for water quality.
,<<.}� :
The goal of the project is to utilize the existing regional pond located within the Renewal by Andersen site
by expanding the pond further south towards the Renewal by Andersen building and adding an additional
water quality infiltration basin north of the proposed building expansion area.This infiltration basin will be
designed to accommodate the stormwater runoff from the new building expansion, and a portion of the
proposed parking lot expansion area.The infiltration basin will be designed to have a drain tile at the
bottom of the basin and outfall into the regional pond.There will also be an emergency overflow that will
outfall directly into the regional pond when the infiltration basin is full. Please refer to the attached
Proposed Drainage Improvements Map for the site layout.
, ,.
�.�.��, , . . . ,..�,.� � �e.g. es,.�,���:� , �_ , , s =., . � _ .u�. __ ��.�. _..� _�.�=ng risk, etc.
Using the Program for Predicting Polluting Particle Passage thru Pits, Puddles, & Ponds (P8),the existing
conditions currently has a removal efficiency of 94.7%(533.3 Ibs/yr)for Total Suspended Solids (TSS) and
60.5% (13.9 Ibs/yr)for Total Phosphorous (TP). If Renewal by Andersen expanded their building and did not
make any improvements to the regional pond, it would still meet the TP requirements with a 60.5%
removal efficiency, but the removal efficiency for TSS would drop to 93.6%.This would not satisfy the
g 3 �;1
ti� �,
rer�uirements of the SWWD or the City for water quality. By proposing the expansion to the regional pond
alone the water quality requirements of the SWWD and City would E�e met. By buildir�g the infiltration
basin,this v+rill exceed th� requirements of the SWWd and the City by ha�ing a removal efficieney of 95,3%
{79�Ibs/yr)for TS5 and 71%{18.3 Ibs/yr)for TP.
PI'QJGCt BUC�g'�t
Total Project Cost: $572,000
CCIP Funding Request�d (rrTaximum of 35%oftotal project cost): $200,000
I certify to the bes�-r�f my knowledge that the informati�n included in this application rs true, complete,
and crccurate
Srgnature f Date � '�-S �S
4
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a .� " � a� "� - � '� ' '"- ��� N City of Cottae Grove, MN
. .�,. ��►. � Renewal by Andersen
97thStreetSouth ;��__ �i �"' • i , � " Proposed
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-�� '' � ' ---�— � Drainage Improvements
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: ��. ° , ■�■ _ � ���L � ~�--�—� �°
ose� --_�i--- ■ A �, e■
_ INFILTR �`� � � ■
BASIN ��_
�I ,, �. PROPOSED LEGEND
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� EXPANSION � �B
� �' ♦,:';;t: � ♦ FES
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' � f� � ,� ♦ STORM PIPE
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� ' PROPOSED . \e �i PROPOSED DRAIN TILE
5 BUILDING r � I 4'r � WATER PIPE
�! .r EXPANSION , • I� • �z PROPOSED EXPANSION AREA
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.��,_y, Q PROPOSED NWL
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Coordinated Capital Improvements Program (CCIP)
Request for Proposals and Application
2015 �lpplication �`ycle
Return to: South Washington Watershed District
2302 Tower Dr.
Woodbury, MN 55125
jloomis@ci.woodbury.mn.us
Due by: April 3, 2015 at 4:00 p.m.
��'I'�I��
As a result of developing and implementing its water resource management plan, working with local
government units within the watershed on local water plans and capital projects, and carrying out its
permitting program,the District is aware of the challenges posed to sound, comprehensive surface water
management by existing urban development. Existing development and impervious surface within the
watershed constructed at an earliertime may not have applied due attention to minimizing and managing
stormwater impacts under pre-existing regulatory conditions. Stormwater management in these areas
may be improved through retrofitting and during redevelopment. However,space and available options
often are constrained and measures may be expensive.
To facilitate actions to improve stormwater management in existing developed areas,the District
administers a Coordinated Capital Improvement Program (CCIP)to provide financial assistance to local
land use and public works authorities for water quality improvement projects. The CCIP seeks to:
• Facilitate local government units within the District to explore water quality improvement
opportunities and incorporate those opportunities into routine infrastructure operation and
maintenance projects;
• Promote closer collaboration between local units and the District on water quality improvement
efforts as an element of capital improvement plans;
• Foster stormwater management innovation and create demonstration/education examples; and
• Defray local costs in the broader, watershed-wide interest of improving water quality.
Applications are now being accepted for 2015 project funding. Awarded projects must be complete
before Dec. 31, 2016. Grants may be awarded for up to 35%of the total project cost. CCIP grants
are funded by stormwater utility fees, and therefore are allocated to projects in the SWWD
Management Unit where the fees are collected. Up to $500,000 in CCIP funds will be allocated to
projects in the South Washington Management Unit for 2015.
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All municipalities and county agencies proposing projects within the South Washington Management
Unit of the SWWD are eligible to apply. Capital improvements and maintenance projects are eligible.
New and redevelopment projects must provide treatment beyond what is required by SWWD standards
to be eligible.
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Applications will be evaluated by SWWD staff to determine overall water quality benefit and will rank
projects based on their cost/benefit. Funding allocations will be determined by the SWWD Board of
Managers at their April Board meeting. The Board reserves the right to deny all applications.
All grants will be awarded contingent on approval following SWWD development review. Project
designs must meet all SWWD standards and follow guidance provided in the SWWD standards manual.
Development review applications for CCIP funded projects must include a maintenance plan for SWWD
review. Grantees will be required to enter into an agreement with SWWD. Payment will be made
following completion of the project and submission of final report to consist of as built plans and
itemized invoice detailing total project costs.
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Contact John Loomis at 651/714-3714 or iloomis@ci.woodburv.mn.us.
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2015 SWWD Coordinated Capital
Improvement Program Application
Applicant Information
LGU: City of Cottage Grove
LGU Representative:Jennifer Levitt
Address: 12800 Ravine Parkway
City: Cottage Grove State:_ MN Zip Code: 55016
Phone: (651)458-2890 Email: Ilevitt@cotta�e-�rove.or�
Project Location
Project Location: Commercial Redevelopment at the old Home Depot and Rainbow Foods location (80t" St.
S. and E. Point Douglas Rd.)
Watershed Management Unit: South Washington Management Unit
Primary Waterbody Affected: Downstream PWI water body,wetlands, and the Mississippi River
Project Description
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The City of Cottage Grove is looking at redeveloping the old Home Depot and Rainbow Foods sites located
near the intersection of 80t"Street South and East Point Douglas Road. As part of the redevelopment,the
storm sewer system will need to be upgraded to meet South Washington Watershed District and the City
of Cottage Grove's water quality standards. Currently there is an existing storm pond on site that provides
storage for approximately half of the site.The pond has an outlet that ties into the storm sewer line along
East Point Douglas Road that ultimately outfalls into the regional pond at Hamlet Park. Over half of the
stormwater runoff from the site goes directly into the storm sewer that outfalls into Hamlet Pond Park
without any pretreatment. Please refer to the attached existing conditions drainage map for additional
information.
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The goal of the project is to provide water quality treatment to the redevelopment area and the
surrounding businesses onsite before it reaches the Hamlet Park Regional Pond for additional water
quality treatment.To reach this goal the City is looking at introducing a StormTech underground storage
system by ADS to replace the existing pond,which will be the first of its kind for the City. It is our
understanding that there are other underground storage systems located within the SWWD like the one
we are proposing, but at a much smaller scale.To better familiarize the SWWD with the proposed system,
we have included the proposed shop drawings for the project along with other informational material to
give the SWWD a better understanding of how the system works.
The proposed system would be designed to retain the first one inch of rainfall from all impervious areas in
the redevelopment site and the surrounding businesses as depicted on the attached Proposed Conditions
Drainage Map.The outlet to the system would enter the trunk storm sewer line that outfalls into the
Hamlet Park Regional Pond. In addition to the outlet, a series of drain tiles would be installed underneath
the storage system allowing water to filter through and tie into the trunk storm sewer line that ultimately
outfalls into the Hamlet Park Regional Pond.To achieve this, slight modifications will need to be made to
the current storm sewer system.The existing pond currently has an overflow from a commercial
development on the northwest side of East Point Douglas Road.The City is proposing to install a sump
manhole that ties into the existing trunk storm sewer line.The City is also proposing to remove some
storm lines, change catch basin castings to solid manhole covers, and install new storm sewer lines.The
new storm lines will route the stormwater runoff into the new underground storage area and not
bypassing the system as a portion of the site currently does.
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Using the Program for Predicting Polluting Particle Passage thru Pits, Puddles, & Ponds (P8),the existing
conditions for the existing storm pond currently has a removal efficiency of 78.7%(755 Ibs/yr)for Total
Suspended Solids(TSS) and 44.4%(6.7 Ibs/yr)for Total Phosphorous (TP). This only accounts for 10.4 acres
of the total 24.8 acres of the commercial site so the true percentages for the entire site are much lower
than that prior to the stormwater runoff entering the regional pond at Hamlet Park.With the proposed
modifications to the storm sewer system,the underground storage system will provide water quality
treatment for 22.2 acres of the commercial site, including all of the potential redevelopment area.The
StormTech system by ADS has an isolator row that forces all of the water to pass through it prior to
entering the underground storage system.This isolator row is where the primary water treatment takes
place for the system. From independent studies performed by various research facilities it has shown that
the isolator row to provide a removal efficiency of approximately 80%for TSS and a 49%removal efficiency
for TP. Using the percentages and extrapolating a total pounds produced a year for TSS and TP it is
estimated that the StormTech system by ADS will approximately remove 2,879 Ibs/yr of TSS and 25 Ib/yr of
TP.Although the percentages of removal look similar to the existing conditions, it is a large increase to
overall water quality for TSS and TP removal from the onsite system since it will be providing water quality
to the site rather than less than half under existing conditions. In addition to the isolator row, by allowing
filtration into the proposed drain tiles within the underground storage system, it will increase the TSS and
TP removal efficiency overall.
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P�~c�ject Bud��t
Total Projeet Cost: $1,250,4D0
CCIP Funding Requested (maximum of 351 of totaf project cost): $437,0{f0—The City is open to receivbng
funds forthis project over multiple years,given the potential funding restraints.
I certify to the best of my knowledge that the information r`ncluded in this application is true, complete,
and accurate
signorure Date 3 �� !�
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EN��NEEPRO MECTHI�NFORMATION �
PRODUCT 612-296-7692
MANAGER: MARK.SCHOLLE@ADS-PIPE.COM
PAUL SCHEID
ADS SALES REP: 612-597-1909 ��������
PAUL.SCHEID@ADS-PIPE.COM �
PROJECT NO: 91377
ADVANCED DRAINAGE SYSTEMS, INC.
COTTAGE GROVE REDEVELOPMENT
COTTAGE GROVE, MN
STORMWATER CHAMBER SPECIFICATIONS IMPORTANT-NOTES FOR THE BIDDING AND INSTALLATION OF MC-3500 CHAMBER SYSTEM
1. CHAMBERS SHALL BE STORMTECH MC-3500 OR APPROVED EQUAL. 1. STORMTECH MC-3500 CHAMBERS SHALL NOT BE INSTALLED UNTIL THE MANUFACTURER'S REPRESENTATIVE HAS COMPLETED A
PRE-CONSTRUCTION MEETING WITH THE INSTALLERS.
2. CHAMBERS SHALL BE MADE FROM VIRGIN,IMPACT-MODIFIED POLYPROPYLENE COPOLYMERS. 2. STORMTECH MC-3500 CHAMBERS SHALL BE INSTALLED IN ACCORDANCE WITH THE"STORMTECH MC3500/MC-4500 CONSTRUCTION GUIDE".
3. CHAMBER ROWS SHALL PROVIDE CONTINUOUS,UNOBSTRUCTED INTERNAL SPACE WITH NO INTERNAL SUPPORT PANELS THAT 3. CHAMBERS ARE NOTTO BE BACKFILLED WITH A DOZER OR AN EXCAVATOR SITUATED OVER THE CHAMBERS.
WOULD IMPEDE FLOW OR LIMITACCESS FOR INSPECTION.
STORMTECH RECOMMENDS 3 BACKFILL METHODS:
4. THE STRUCTURAL DESIGN OF THE CHAMBERS,THE STRUCTURAL BACKFILL,AND THE INSTALLATION REQUIREMENTS SHALL ENSURE . STONESHOOTER LOCATED OFF THE CHAMBER BED.
THATTHE LOAD FACTORS SPECIFIED IN THE AASHTO LRFD BRIDGE DESIGN SPECIFICATIONS,SECTION 12.12,ARE MET FOR:1) • BACKFILL AS ROWS ARE BUILT USINGAN EXCAVATOR ON THE FOUNDATION STONE OR SUBGRADE.
LONG-DURATION DEAD LOADS AND 2)SHORT-DURATION LIVE LOADS,BASED ON THE AASHTO DESIGN TRUCK WITH CONSIDERATION • BACKFILL FROM OUTSIDE THE EXCAVATION USINGA LONG BOOM HOE OR EXCAVATOR.
FOR IMPACTAND MULTIPLE VEHICLE PRESENCES.
4. THE FOUNDATION STONE SHALL BE LEVELED AND COMPACTED PRIOR TO PLACING CHAMBERS.
5. CHAMBERS SHALL MEETTHE REQUIREMENTS OF ASTM F2418,"STANDARD SPECIFICATION FOR POLYPROPYLENE(PP)CORRUGATED
WALL STORMWATER COLLECTION CHAMBERS". 5. JOINTS BENVEEN CHAMBERS SHALL BE PROPERLYSEATED PRIOR TO PLACING STONE.
6. CHAMBERS SHALL BE DESIGNED AND ALLOWABLE LOADS DETERMINED IN ACCORDANCE WITH ASTM F2787,"STANDARD PRACTICE 6. MAINTAIN MINIMUM-9"(230 mm)SPACING BETWEEN THE CHAMBER ROWS.
FOR STRUCTURAL DESIGN OF THERMOPLASTIC CORRUGATED WALL STORMWATER COLLECTION CHAMBERS". 7. INLET AND OUTLET MANIFOLDS MUST BE INSERTED A MINIMUM OF 12"(300 mm)INTO CHAMBER END CAPS.
7. ONLYCHAMBERSTHATAREAPPROVEDBYTHESITEDESIGNENGINEERWILLBEALLOWED.THECHAMBERMANUFACTURERSHALL 8. EMBEDMENTSTONESURROUNDINGCHAMBERSMUSTBEACLEAN,CRUSHED,ANGULARSTONE3/4-2"(20-SOmm)MEETINGTHEAASHTOM43
SUBMITTHEFOLLOWINGUPONREQUESTTOTHESITEDESIGNENGINEERFORAPPROVALBEFOREDELIVERINGCHAMBERSTOTHE DESIGNATIONOF#30R#4.
PROJECT SITE:
9. STONE MUST BE PLACED ON THE TOP CENTER OF THE CHAMBER TO ANCHOR THE CHAMBERS IN PLACE AND PRESERVE ROW SPACING..
a. A STRUCTURAL EVALUATION SEALED BYA REGISTERED PROFESSIONAL ENGINEER THAT DEMONSTRATES THATTHE SAFEN
FACTORS ARE GREATER THAN OR EQUAL TO 1.95 FOR DEAD LOAD AND 1.75 FOR LIVE LOAD,THE MINIMUM REQUIRED BYASTM 10. ADS RECOMMENDS THE USE OF"FLEXSTORM CATCH IT"INSERTS DURING CONSTRUCTION FOR ALL INLETS TO PROTECTTHE SUBSURFACE
F2787 AND BYAASHTO FOR THERMOPLASTIC PIPE. STORMWATER MANAGEMENT SYSTEM FROM CONSTRUCTION SITE RUNOFF.
b. A STRUCTURAL EVALUATION SEALED BYA REGISTERED PROFESSIONAL ENGINEER THAT DEMONSTRATES THATTHE LOAD NOTES FOR CONSTRUCTION EQUIPMENT
FACTORS SPECIFIED IN THE AASHTO LRFD BRIDGE DESIGN SPECIFICATIONS,SECTION 12.12,ARE MET.THE 50 YEAR CREEP
MODULUS DATA SPECIFIED IN ASTM F2418 MUST BE USED AS PART OF THE AASHTO STRUCTURAL EVALUATION TO VERIFY �. STORMTECH MC-3500 CHAMBERS SHALL BE INSTALLED IN ACCORDANCE WITH THE"STORMTECH MC3500/MC-4500 CONSTRUCTION GUIDE".
LONG-TERM PERFORMANCE.
2. THE USE OF EQUIPMENT OVER MC-3500 CHAMBERS IS LIMITED:
c. STRUCTURAL CROSS SECTION DETAIL ON WHICH THE STRUCTURAL EVALUATION IS BASED. . NO EQUIPMENT IS ALLOWED ON BARE CHAMBERS.
• NO RUBBER TIRED LOADER,DUMP TRUCK,OR EXCAVATORS ARE ALLOWED UNTIL PROPER FILL DEPTHS ARE REACHED IN ACCORDANCE
8. CHAMBERS AND END CAPS SHALL BE PRODUCED ATAN IS09001 CERTIFIED MANUFACTURING FACILIN. WITH THE"STORMTECH MC-3500/MC�500 CONSTRUCTION GUIDE".
• WEIGHT LIMITS FOR CONSRUCTION EQUIPMENT CAN BE FOUND IN THE"STORMTECH MC3500/MC-4500 CONSTRUCTION GUIDE".
3. FULL 36"(900 mm)OF STABILIZED COVER MATERIALS OVER THE CHAMBERS IS REQUIRED FOR DUMP TRUCKTRAVEL OR DUMPING.
USE OF A DOZER TO PUSH EMBEDMENT STONE BETWEEN THE ROWS 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.
CONTACT STORMTECH AT 1-888-892-2694 WITH ANY QUESTIONS ON INSTALLATION REQUIREMENTS OR WEIGHT LIMITS FOR CONSTRUCTION EQUIPMENT.
CONCEPTUAL LAYOUT NOT FOR CONSTRUCTION z
(428)STORMTECH MC-3500 CHAMBERS W
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(28)STORMTECH MC3500 END CAPS � Z
INSTALLED WITH 12"COVER STONE,9"BASE STONE,40°k STONE VOID O � o Y �
INSTALLED SYSTEM VOLUME:8Q451 CF(PERIMETER STONE INCLUDED) -
AREA OF SYSTEM:23,621 FT' j W o �
PERIMETER OF SYSTEM:687 FT WQ O z Y
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15"X 15"ADS N-12 TOP MANIFOLD(TYP OF 2) csi "
MAXIMUM INLET FLOW 13.5 CFS � LL "p-
INVERT 23.39"ABOVE CHAMBER BASE o o p g
(SIZE TBD BY ENGINEER/SEE TECH SHEET#7 FOR MANIFOLD SIZING GUIDANCE)
6"ADS N-12 DUAL WALL PERFORATED HDPE UNDERDRAIN W N
(SIZE TBD BY ENGINEER)� - - - - - - pLACE MINIMUM 17.5'OF ADS GEOSYNTHETICS 315WTM WOVEN- � �
GEOTEXTILE OVER BEDDING STONE AND UNDERNEATH CHAMBER
FEET FOR SCOUR PROTECTION ATALL CHAMBER INLET ROWS
� _ �a -_ -
I � _,I �� p�
I I I �o -- -
I � �I �m -
24"ADS N-12 BOTTOM CONNECTION I I ��I � ;
MAXIMUM OUTLET FLOW 7.0 CFS ' - m °' V� -
INVERT2.06"ABOVECHAMBERBASE I �I I
(SIZE TBD BY ENGINEER/SEE TECH SHEET#7 FOR ����:.�
MANIFOLD SIZING GUIDANCE) -
_ I m o
PROPOSED OUTLETCONTROLSTRUCTURE - ^
(DESIGNBYENGINEER/PROVIDEDBYOTHERS)� � ¢ �
�, -�� �oM
� �=o
1/ �=m
INSPECTION PORT� ISOLATOR ROW J PROPOSED STRUCTURE W/ELEVATED BYPASS
MANIFOLD -
� �
(DESIGNBYENGINEER/PROVIDEDBYOTHERS) y m�
24027'
24"CORED END CAP �a ��
248.59' PART#MC35001EPP24BC Q m
NP OF ALL MC-3500 24" �
BOTTOM CONNECTIONS �'a
AND ISOLATOR ROWS
SHEET
2 OF 5
z
ACCEPTABLE FILL MATERIALS: STORMTECH MC-3500 CHAMBER SYSTEMS a z �
o � o Y -
AASHTO MATERIAL COMPACTION/DENSITY
MATERIAL LOCATION DESCRIPTION > W z w °
CLASSIFICATIONS REQUIREMENT o O Q w p
FINAL FILL:FILL MATERIAL FOR LAYER'D'STARTS W � � x z
FROM THE TOP OF THE'C'LAYER TO THE BOTTOM ANYSOIL/ROCK MATERIALS,NATIVE SOILS,OR PER PREPARE PER SITE DESIGN ENGINEER'S PLANS. � (, o � o
D OF FLEXIBLE PAVEMENT OR UNPAVED FINISHED ENGINEER'S PLANS.CHECK PLANS FOR PAVEMENT N/A PAVED INSTALLATIONS MAYHAVE STRINGENT w W
GRADEABOVE.NOTETHATPAVEMENTSUBBASE SUBGRADEREQUIREMENTS. MATERIALANDPREPARATIONREQUIREMENTS. o
MAY BE PART OF THE'D'LAYER � � � a
AASHTO M145^ U` � � �
BEGIN COMPACTIONS AFTER 24"(600 mm)OF H rn 3
A-�'A-2-4'A-3 � o
INITIAL FILL:FILL MATERIAL FOR LAYER'C' GRANULAR WELL-GRADED SOIL/AGGREGATE MIXTURES,<35°k MATERIAL OVER THE CHAMBERS IS REACHED. � O i£
STARTS FROM THE TOP OF THE EMBEDMENT FINES OR PROCESSED AGGREGATE. COMPACTADDITIONAL LAYERS IN 12"(300 mm) Q U � `�
� U
C STONE('B'LAYER)TO 24"(600 mm)ABOVE THE �R MAX LIFTS TO A MIN.95°k PROCTOR DENSITY FOR �� u' �
TOP OF THE CHAMBER.NOTE THAT PAVEMENT MOST PAVEMENT SUBBASE MATERIALS CAN BE USED IN LIEU AqSHTO M43^ �NELL GRADED MATERIAL AND 95°k RELATIVE 0 Q � -
SUBBASE MAY BE A PART OF THE'C'LAYER. OF THIS LAYER. DENSIN FOR PROCESSED AGGREGATE (� o
3,357,4,467,5,56,57,6,67,68,7,78,8,89,
9 10 MATERIALS.
EMBEDMENT STONE:FILL SURROUNDING THE CLEAN,CRUSHED,ANGULAR STONE,NOMINAL SIZE AASHTO M43^
B CHAMBERS FROM THE FOUNDATION STONE('A' NO COMPACTION REQUIRED. -
LAYER)TOTHE'CLAYERABOVE. DISTRIBUTIONBENVEEN3/4-21NCH(20-SOmm) 3,4 z a
O
a z __
FOUNDATION STONE:FILL BELOW CHAMBERS CLEAN,CRUSHED,ANGULAR STONE,NOMINAL SIZE AASHTO M43^ PLATE COMPACT OR ROLL TOACHIEVE A FLAT � �
A FROMTHESUBGRADEUPTOTHEFOOT(BOTTOM) DISTRIBUTIONBENVEEN3/4-21NCH(20-SOmm) 3,4 SURFACE�' � " -
OFTHECHAMBER. '� �
o �a
PLEASE NOTE:
1. THE LISTED AASHTO DESIGNATIONS ARE FOR GRADATIONS ONLY.THE STONE MUSTALSO BE CLEAN,CRUSHED,ANGULAR.FOR EXAMPLE,A SPECIFICATION FOR#4 STONE WOULD STATE:"CLEAN,CRUSHED, -
ANGULAR NO.4(AASHTO M43)STONE". z
2. STORMTECH COMPACTION REQUIREMENTS ARE MET FOR'A'LOCATION MATERIALS WHEN PLACED AND COMPACTED IN 9"(230 mm)(MAX)LIFTS USING NVO FULL COVERAGES WITH A VIBRATORYCOMPACTOR. °
3. WHERE INFILTRATION SURFACES MAY BE COMPROMISED BYCOMPACTION,FOR STANDARD DESIGN LOAD CONDITIONS,A FLAT SURFACE MAY BE ACHIEVED BY RAKING OR DRAGGING WITHOUT COMPACTION Y ¢ a S
EQUIPMENT.FOR SPECIAL LOAD DESIGNS,CONTACT STORMTECH FOR COMPACTION REQUIREMENTS. � �'
o ps
ADS GEOSYNTHETICS 601T NON-WOVEN GEOTEXTILE ALL PAVEMENT LAYER(DESIGNED w � _
AROUNDCLEAN,CRUSHED,ANGULARSTONEINA&BLAYERS BYSITEDESIGNENGINEER) � M
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� � � �. � � ��j � . � ; ..
PERIMETER STONE ��y V �� > � )o���ov�o � � � , D' � ' rnun ccu „ 24" 2.4 m �_
(SEENOTE6) 7u iiu��iiu iiu��iiu ii ._�iu�iiu��iiu iiu iiiGiiu i iu�_ u". (�u u �,�u ��u ( omm) � fs' � (600mm)MIN' � ) �
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12"(300 mm)MIN ��.
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EXCAVATION WALL � . � o
(CAN BE SLOPED OR VERTICAL) � 3 I �'�--' �,f ��.,,ky§- 45" � .
4
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6"(i50mm)MM �II I il III�II-�'_"' �IIIIIi=- li i � il I �_ il�lli��llll I ��I}� i li I II I�liii I� - BYDESIONENOINEER9"(230mm)MIN � °�
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ND CAP II SUBORADE SOILS (230 mm)MIN ��"��950 mm) 12"(300 mm)NP J o
(SEE NOTE 5)
NOTES: m`" _
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1. MC-3500 CHAMBERS SHALL CONFORM TOTHE REQUIREMENTS OF ASTM F2418"STANDARD SPECIFICATION FOR POLYPROPYLENE(PP)CORRUGATED WALL STORMWATER COLLECTION CHAMBERS". �o M -
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2. MC-3500 CHAMBERS SHALL BE DESIGNED IN ACCORDANCE WITH ASTM F2787"STANDARD PRACTICE FOR STRUCTURAL DESIGN OF THERMOPLASTIC CORRUGATED WALL STORMWATER COLLECTION CHAMBERS". -
�=m
3. "ACCEPTABLE FILL MATERIALS"TABLE ABOVE PROVIDES MATERIAL LOCATIONS,DESCRIPTIONS,GRADATIONS,AND COMPACTION REQUIREMENTS FOR FOUNDATION,EMBEDMENT,AND FILL MATERIALS.
4. THE"SITE DESIGN ENGINEER"REFERS TO THE ENGINEER RESPONSIBLE FOR THE DESIGN AND LAYOUT OF THE STORMTECH CHAMBERS FOR THIS PROJECT. _
� �
5. THE SITE DESIGN ENGINEER IS RESPONSIBLE FOR ASSESSINGTHE BEARING RESISTANCE(ALLOWABLE BEARING CAPACIN)OF THE SUBGRADE SOILS AND THE DEPTH OF FOUNDATION STONE WITH LL
CONSIDERATION FOR THE RANGE OF EXPECTED SOIL MOISTURE CONDITIONS. �a a�
6. PERIMETER STONE MUST BE EXTENDED HORIZONTALLYTOTHE EXCAVATION WALL FOR BOTH VERTICAL AND SLOPED EXCAVATION WALLS �3 a a�
J
7. ONCE LAYER'C'IS PLACED,ANYSOIL/MATERIAL CAN BE PLACED IN LAYER'D'UP TO THE FINISHED GRADE.MOST PAVEMENT SUBBASE SOILS CAN BE USED TO REPLACE THE MATERIAL REQUIREMENTS OF LAYER'C' -
OR'D'ATTHE SITE DESIGN ENGINEER'S DISCRETION.
SHEET
3 OF 5
COVER PIPE CONNECTION TO END OPTIONAL INSPECTION PORT w -
CAP WITH ADS GEOSYNTHETICS 601T �
NON-WOVEN GEOTEXTILE a � ¢
MC-3500 CHAMBER O o Y �
STORMTECH HIGHLYRECOMMENDS MC3500END CAP � W �� w �
FLEXSTORM PURE INSERTS IN ANYUPSTREAM W � z Y �
STRUCTURES WITH OPEN GRATES � O � � p
W � � x
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OR =�i."- (� o
MANHOLE "
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SUMP DEPTH TBD BY i r �� � � �
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SITEDESIGNENGINEER ����� � o o �p
(24"[600 mm]MIN RECOMMENDED)
24"(600 mm)HDPE ACCESS PIPE REQUIRED TWO LAYERS OF ADS GEOSYNTHETICS 315WTM WOVEN
USE FACTORY PRE-CORED END CAP GEOTEXTILE BENVEEN FOUNDATION STONE AND CHAMBERS
PART#:MC35001EPP24BC 825(2.51 m)MIN WIDE CONTINUOUS FABRIC WITHOUT SEAMS Y ¢ p y
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MC-3500 ISOLATOR ROW DETAIL � � ��
NTS o �
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INSPECTION&MAINTENANCE
STEP 1) INSPECT ISOLATOR ROW FOR SEDIMENT i a r
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A. INSPECTION PORTS QF PRESENT) ��> -p
A.1. REMOVE/OPEN LID ON NYLOPLAST INLINE DRAIN � -°
A2. REMOVE AND CLEAN FLEXSTORM FILTER IF INSTALLED 18"(450 mm)MIN WIDTH �p p� o
A.3. USING A FLASHLIGHTAND STADIA ROD,MEASURE DEPTH OF SEDIMENTAND RECORD ON MAINTENANCE LOG PAVEMENT �e
A.4. LOWER A CAMERA INTO ISOLATOR ROW FOR VISUAL INSPECTION OF SEDIMENT LEVELS(OPTIONAL) -- _
A.S. IF SEDIMENT IS AT,OR ABOVE,3"(80 mm)PROCEED TO STEP 2.IF NOT,PROCEED TO STEP 3. CONCRETE COLLAR �� w
B. ALL ISOLATOR ROWS N -
B.1. REMOVE COVER FROM STRUCTURE AT UPSTREAM END OF ISOLATOR ROW ., 12"(300 mm)NYLOPLAST INLINE ///��� �m
B.2. USING A FLASHLIGHT,INSPECT DOWN THE ISOLATOR ROW THROUGH OUTLET PIPE � DRAIN BODY W/SOLID HINGED }(
i) MIRRORS ON POLES OR CAMERAS MAY BE USED TOAVOID A CONFINED SPACE ENTRY ��� COVER OR GRATE r
ii) FOLLOW OSHA REGULATIONS FOR CONFINED SPACE ENTRY IF ENTERING MANHOLE ���C����: PART#2712AG10N �� �
B.3. IF SEDIMENT IS AT,OR ABOVE,3"(80 mm)PROCEED TO STEP 2.IF NOT,PROCEED TO STEP 3. CONCRETE SLAB ii II�_O I�,�� SOLID COVER:1299CGC
8"(200 mm)MIN THICKNESS ' GRATE:1299CGS
STEP 2) CLEAN OUT ISOLATOR ROW USING THE JENAC PROCESS ,F �j� ;��� 'i,r
A. A FIXED CULVERT CLEANING NOZZLE WITH REAR FACING SPREAD OF 45"(1.1 m)OR MORE IS PREFERRED fi''�'�'� �'� o
B. APPLY MULTIPLE PASSES OF JENAC UNTIL BACKFLUSH WATER IS CLEAN FLEXSTORM CATCH IT l ,� m J�
PART#6212NYFX �'��
C. VACUUM STRUCTURE SUMP AS REQUIRED WITH USE OF OPEN GRATE z�„�
STEP 3) REPLACE ALL COVERS,GRATES,FILTERS,AND LIDS;RECORD OBSERVATIONS AND ACTIONS. w O�
10"(250 mm)INSERTA TEE 10"(250 mm)ADS N-12 �o M -
STEP 4) INSPECTAND CLEAN BASINS AND MANHOLES UPSTREAM OF THE STORMTECH SYSTEM. PART#10N12ST351P HDPE PIPE F Q o
INSERTA TEE TO BE CENTERED
ON CORRUGATION CREST v i m
NOTES MC-3500 CHAMBER _
1. INSPECT EVERY 6 MONTHS DURINGTHE FIRSTYEAR OF OPERATION.ADJUSTTHE INSPECTION INTERVAL BASED ON PREVIOUS �a
OBSERVATIONS OF SEDIMENT ACCUMULATION AND HIGH WATER ELEVATIONS �
d kt !. .;�[;� �n �� -.'rN�,- �
2. CONDUCTJETTINGANDVACTORINGANNUALLYORWHENINSPECTIONSHOWSTHATMAINTENANCEISNECESSARY. � � x"�'`.,J��.������. �a ��
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MC-3500 INSPECTION PORT DETAIL
NTS SHEET
4 OF 5
MC-SERIES END CAP INSERTION DETAIL MC-3500 TECHNICAL SPECIFICATION w
NTS �
NTS d Z
VALLEY 86.0"(2184 mm) O � o Y �
STIFFENING RIB CREST INSTALLED o z
STORMTECHENDCAP W W
Z Y o
CREST WEB
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12"(300 mm) STIFFENING RIB LOWER JOINT �W � �a x �
MIN SEPARATION CORRUGATION � � o � o
. . . . . . . � W f o
12"(300 mm)MIN INSERTION
� H m f' _
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MANIFOLD STUB FOOT Q � M F �
MANIFOLDHEADER / � F 0 w
1 � o a �'
, UPPER JOINT CORRUGATION
j BUILD ROW IN THIS DIRECTION b
/
� 90.0"(2286 mm) �
MANIFOLDHEADER �� ACTUALLENGTH O u
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MANIFOLDSTUB � o
45.0" 45.0" oi -
(1143 mm) (1143 mm) pp.s^ o o �a
1 (571 mm) o
INSTALLED�
12"(300 mm) � 12"(300 mm) °
MIN SEPARATION �� MIN INSERTION � � Y ¢ a S
77.0"
77.0" s "
(1956 mm) � " �'�
(1956 mm)
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NOTE:MANIFOLD STUB MUST BE LAID HORIZONTAL NOMINAL CHAMBER SPECIFICATIONS �
FOR A PROPER FIT IN END CAP OPENING. SIZE(W X H X INSTALLED LENGTH) 77.0"X 45.0"X 86.0" (1956 mm X 1143 mm X 2184 mm) � o
CHAMBER STORAGE 109.9 CUBIC FEET (3.11 m') � m
MINIMUM INSTALLED STORAGE' 178.9 CUBIC FEET (5.06 m')
WEIGHT 135.OIbs (612kg)
UNDERDRAIN DETAIL 25.�"
NTS NOMINAL END CAP SPECIFICATIONS � (653 mm) �
SIZE(WXHXINSTALLEDLENGTH) 77.0"X45.0"X22.5" (1956mmX1143mmX571mm) �� � --
STORMTECH STORMTECH END CAP STORAGE 14.9 CUBIC FEET (0.42 m')
CHAMBERS STORMTECH CHAMBER MINIMUMINSTALLEDSTORAGE' 46.00UBICFEET (1.30m') ��' �o �
ENDCAP '�5�� � WEIGHT SO.OIbs (227kg) • -� -
�'�. �p �
OUTLET MANIFOLD 7��,.''�> > �l� �� o
'ASSUMES 12"(305 mm)STONE ABOVE,9"(229 mm)STONE FOUNDATION AND BENVEEN CHAMBERS, �a
,L, , , �� �
� � � 'z 12"(305 mm)STONE PERIMETER IN FRONT OF END CAPS AND 40°k STONE POROSITY w -
�(ry � 1� l�l l �m -
II I `Vll�� � �� STUBS AT BOTTOM OF END CAP FOR PART NUMBERS ENDING WITH"B" /��( - _
FOUNDATIONSTONE �"'� � STUBSATTOPOFENDCAPFORPARTNUMBERSENDINGWITH"T" �
BENEATH CHAMBERS ����'� '
l l l l l l I � �� � �� � PART# STUB B C -
� � �\\���//�j�%\%j�/ ;!� MC35001EPP06B 6"(150 mm) 3321"(844 mm) 0.66"(17 mm)
� � � � � � � � � � `���j��j�� MC35001EPPOBT 31.16"(791 mm) --- o
� �� � ADS GEOSYNTHETICS 601T 8"(200 mm) �o
NON-WOVEN GEOTEXTILE SECTION A-A DUAL WALL MC35001EPP08B 0.81"(21 mm) m
MC35001EPP10T 29.04"(738 mm) z��
PERFORATED 10"(250 mm)
HDPE MC35001EPP10B --- 0.93"(24 mm) �O�
STOEND CAP _ . Q UNDERDRAIN MC35001EPP12T �p^�300 mm) �6.36"(670 mm) -- - _
� MC35001EPP12B --- 1.35"(34 mm) � ��n
'�a-� a a� MC35001EPPi 5T 23.39"(594 mm) --- ��o -
�� � � B B ����� MC35001EPP15B �5"(375 mm) 1.50"(38 mm) B v i�
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MC35001EPPi8TC 20.03"(509 mm)
18"(450 mm) �
�_ `� MC35001EPPi8BC --- 1.77"(45 mm) � �
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` li`,1'`5�i � `� MC35001EPP24TC 14.48"(368 mm) ��
FOUNDATION STONE t --- w
24"(600 mm) y �
1
� A� � BENEATH CHAMBERS �� �a MC35001EPP24BC --- 2.06"(52 mm) w�
MC35001EPP30BC 30"(750 mm) --- ��
� � � � � NOTE:ALL DIMENSIONS ARE NOMINAL � �m
ADS GEOSYNTHETICS 601T !���/�/�/�/�� �
A NON-WOVEN GEOTEXTILE � �jj/���/����/����� CUSTOM PRECORED INVERTS ARE AVAILABLE UPON REQUEST.INVENTORIED MANIFOLDS INCLUDE �a _
�V�V� 12-24"(300-600 mm)SIZE ON SIZE AND 15�8"(375-1200 mm)ECCENTRIC MANIFOLDS.
NUMBER AND SIZE OF UNDERDRAINS PER SITE DESIGN ENGINEER C
4"(100 mm)NP FOR SC-310 SYSTEMS SECTION B-B CUSTOM INVERT LOCATIONS ON THE MC-3500 END CAP CUT IN THE FIELD ARE NOT RECOMMENDED � SHEET
6"(150 mm)TYP FOR SC-74Q DC-78Q MC-3500&MC�500 SYSTEMS FOR PIPE SIZES GREATER THAN 10"(250 mm) � 5 OF J
THE INVERT LOCATION IN COLUMN'B'ARE THE HIGHTEST POSSIBLE FOR THE PIPE SIZE.
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Isolator° Row 0&M Manual
�� StormTech° Chamber System for Stormwater Management
�I .� ��� I��I��+��� i���
1.1 INTRODUCTION The Isolator Row is typically designed to capture the
An important component of any Stormwater Pollution "first flush" and offers the versatility to be sized on a vol-
Prevention Plan is inspection and maintenance. The ume basis or flow rate basis. An upstream manhole not
StormTech Isolator Row is a patented technique to only provides access to the Isolator Row but typically
inexpensively enhance Total Suspended Solids (TSS) includes a high flow weir such that storm water flowrates
removal and provide easy access for inspection and or volumes that exceed the capacity of the Isolator Row
maintenance. overtop the over flow weir and discharge through a
manifold to the other chambers.
_ -�,, ~�
�� �' � ' �=�-
,,,j ��- '�.,, The Isolator Row may also be part of a treatment train.
���� � By treating storm water prior to entry into the chamber
'� � �} � system, the service life can be extended and pollutants
such as hydrocarbons can be captured. Pre-treatment
� `'' ' best management practices can be as simple as deep
sump catch basins, oil-water separators or can be inno-
'�� vative storm water treatment devices. The design of
� � f�,� the treatment train and selection of pretreatment devices
t' �;
fl'�'r' f�� by the design engineer is often driven by regulatory
� , + ' ' ' , requirements. Whether pretreatment is used or not, the
'�, ` Isolator Row is recommended by StormTech as an
effective means to minimize maintenance requirements
and maintenance costs.
Note:See the StormTech Design Manual for detailed
Looking down the Isolator Row from the manhole opening, woven information on designing inlets for a StormTech system,
geote�ile is shown between the chamber and stone base. including the Isolator Row.
1.2 THE ISOLATOR ROW StormTech Isolator Row with Overflow Spillway
The Isolator Row is a row of StormTech chambers, either (not to scale)
SG310, SG310-3, SC-740, DC-780, MG3500 or MG oPr�oN,q�
4500 models,that is surrounded with filter fabric and con- PRE-TREaTMENT
nected to a closely located manhole for easy access. The
fabric-wrapped chambers provide for settling and filtra- sTORMTECH
tion of sediment as storm water rises in the Isolator Row ISOLATOR ROW
and ultimately passes through the filter fabric.The open
bottom chambers and perforated sidewalls(SC-310, SC- ,,_� _�,, � � ��� � ����
310-3 and SC-740 models)allow storm water to flow both ��-'�� % ���. uL� % �— —%
vertically and horizontally out of the chambers. MANHo�E
Sediments are ca tured in the Isolator Row rotectin N/ITH
p p g OVERFLOW
the storage areas of the adjacent stone and chambers WEIR IIIIIIIIIIII
from sediment accumulation.
Two different fabrics are used for the Isolator Row. A
woven geotextile fabric is placed between the stone
and the Isolator Row chambers. The tough geotextile EC HEADER IIII
provides a media for storm water filtration and provides
a durable surface for maintenance operations. It is also
designed to prevent scour of the underlying stone and
remain intact during high pressure jetting. A non-woven
fabric is placed over the chambers to provide a filter
media for flows passing through the perforations in the
sidewall of the chamber. The non-woven fabric is not
required over the DC-780, MC-3500 or MC-4500 models OPTIONAL STORMTECH CHAMBERS
ACCESS
as these chambers do not have perforated side walls.
2 Call StormTech at 888.892.2694 or visit our website at www.stormtech.com for technical and product information.
. . 4.
2.0 Isolator Row Inspection/Maintenanc� StormTech�
2.1 INSPECTION -
The frequency of Inspection and Maintenance varies �
by location. A routine inspection schedule needs to be ,�.,,
established for each individual location based upon site ' '�
specific variables. The type of land use (i.e. industrial,
commercial, residential), anticipated pollutant load, per- � �
cent imperviousness, climate, etc. all play a critical role
in determining the actual frequency of inspection and � "� �
maintenance practices. �;�, �,,..-�
-�_ -`-
At a minimum, StormTech recommends annual inspec-
tions. Initially, the Isolator Row should be inspected every �
6 months for the first year of operation. For subsequent
years, the inspection should be adjusted based upon i-�
previous observation of sediment deposition. -
The Isolator Row incorporates a combination of standard �'
manhole(s) and strategically located inspection ports
(as needed). The inspection ports allow for easy access Examples of culvertcleaning nozzles appropriate for IsolatorRow
to the system from the surface, eliminating the need to maintenance. (These are not StormTech products.)
perform a confined space entry for inspection purposes.
Maintenance is accomplished with the JetVac process.
If upon visual inspection it is found that sediment has The JetVac process utilizes a high pressure water noz-
accumulated, a stadia rod should be inserted to deter- zle to propel itself down the Isolator Row while scouring
mine the depth of sediment. When the average depth and suspending sediments. As the nozzle is retrieved,
of sediment exceeds 3 inches throughout the length of the captured pollutants are flushed back into the man-
the Isolator Row, clean-out should be performed. hole for vacuuming. Most sewer and pipe maintenance
companies have vacuum/JetVac combination vehicles.
2.2 MAINTENANCE Selection of an appropriate JetVac nozzle will improve
The Isolator Row was designed to reduce the cost of maintenance efficiency. Fixed nozzles designed for cul-
periodic maintenance. By "isolating" sediments to just verts or large diameter pipe cleaning are preferable.
one row, costs are dramatically reduced by eliminating Rear facing jets with an effective spread of at least 45"
the need to clean out each row of the entire storage are best. Most JetVac reels have 400 feet of hose allow-
bed. If inspection indicates the potential need for main- ing maintenance of an Isolator Row up to 50 chambers
tenance, access is provided via a manhole(s) located long. The JetVac process shall only be performed on
on the end(s) of the row for cleanout. If entry into the StormTech Isolator Rows that have AASHTO class 1
manhole is required, please follow local and OSHA rules woven geotextile(as specified by StormTech) over
for a confined space entries. their angular base stone.
StormTech Isolator Row(not to scale)
.�PTIONAL INSPECTI�N PORT LOCATION PER CO�/ER ENTIRE RON/WITH ADS o01T
EN�INEER'S�RAWIN'��;4"[100 mm�0 PVC TVP.) NON-4VJ�/EN�EUTE;CrILE(JR EQUAL� STORMTECH END CAP
SC-�40-8'(2.4m)�NIDESTRIP (SC-]40SHOWN)
SG-310&SG-310-3-5'(1.5 in7 WIDE STRIP
. CATCH HASIN OR�
MANHULE � �IIIIII.
1=1 I 1=
III—II
' —1I1=
III���'
�
�� SIIMP DEPTH EV �
DESIuN EN�INEE -I I I I I I—' -I I I I I1—'
2 LAVERS OF ADS'315 WOVEN GEOTEXTILE(OR EQl1AL)
SC-]40,�C-]E30,MC�500&MG-6500-z4"(600 mm)PIPE 6ETWEEN STONE 6ASE AND CHAMBERS
SG-310&SG310-3-12'(300 mm)PIPE CHAMBER(SG]40 SHOWN) MC-4500-10.3'(3.1 m)WIDE STRIP�ADS 315VJrMJ
MC�50�-8.25'(25 m)WIDE STRIP(A�S 315VJrMJ
SG]40 8�G�SO-5'(1.5 rti�WI�E STRIP(A�S 315WTV�
SG310 8 SG310-3-4'(1.2 ni)WI�E STRIP(A�5 315WTI�
NOTE:NON-WOVEN FABRIC IS ONLY REQUIRED OVER THE INLET PIPE CONNECTION INTO THE END CAP FOR DG780,MG3500 AND
MG4500 CHAMBER MODELS AND IS NOT REQUIRED OVER THE ENTIRE ISOLATOR ROW.
Call StormTech at 888.892.2694 or visit our website at www.stormtech.com for technical and product information. 3
3.0 Isolator Row Step By Step Maintenance Procedures
Step 1) Inspect Isolator Row for sediment StormTech Isolator Row(not to scale)
A) Inspection ports (if present)
i. Remove lid from floor box frame 1�B� 2 1)A)
ii. Remove cap from inspection riser
iii. Using a flashlight and stadia rod,
measure depth of sediment and
record results on maintenance log.
iv. If sediment is at, or above, 3 inch ---
depth proceed to Step 2. If not 4
proceed to step 3. —
B) All Isolator Rows
i. Remove cover from manhole at
upstream end of Isolator Row
ii. Using a flashlight, inspect down Isolator Row through outlet pipe
1.Mirrors on poles or cameras may be used to avoid a confined space entry
2.Follow OSHA regulations for confined space entry if entering manhole
iii. If sediment is at or above the lower row of sidewall holes (approximately 3 inches) proceed to Step 2.
If not proceed to Step 3.
Step 2)Clean out Isolator Row using the JetVac process
A)A fixed culvert cleaning nozzle with rear facing nozzle spread of 45 inches or more is preferable
B)Apply multiple passes of JetVac until backflush water is clean
C)Vacuum manhole sump as required
Step 3)Replace all caps, lids and covers, record observations and actions
Step 4) Inspect&clean catch basins and manholes upstream of the StormTech system
Sample Maintenance Log
.� •�� .� �
.,
•� �� •� ��
�. • �•� �� • � � � �• �
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3/15/01 6.3 ft. none New in5tallation.Fixed oint i5 CI frame at grade djm
9/24/01 6.2 0.1 ft. Some grit felt 5m
6/20/03 5.8 0.5 ft. Mucky feel,debri5 vi5ible in manhole and in rv
15olator row,maintenance due
7/7/03 6.3 ft. O SyStemjetted and vacuumed djm
�
StormTech°
Defenfion•Refenfion•Wafer Qualify
�L division of ���
uuur�
701nwood Road,Suite 3 � Rocky Hill � Connecticut � 06067
860.529.8188 � 888.8922694 i fax 866.328.8401 �www.stormtech.com
ADS"Terms and Conditions of Sale"are available on the ADS website,www.ads-pipe.com
Advanced Drainage Systems,the ADS logo,and the green stripe are registered trademarks of Advanced Drainage Systems.
Stormtech°and the Isolator°Row are registered trademarks of StormTech, Inc.
Green Building Council Member logo is a registered trademark of the U.S.Green Building Council.
OO 2013 Advanced Drainage Systems,Inc.S090809 02/13
��
StvrmTechm
l7efr.'.a{re�r,•Fr�a7nlrrrn•Fi55,+��1r7.�
Suhsurf�ce 5tarmwater Nlanagerner�t'
Isolator Row Testinq Summary
Thank you for your interest in the StormTech Isolator Row testing done to date. Below
is a summary of the testing that has been completed on the StormTech Isolator Row.
The most current testing done by the University of New Hampshire provides the
data for 80% removal of TSS. The UNH testing was completed in the field as
opposed to a lab test. Any of the referenced reports are available upon request.
• February 23, 2005 - Tennessee Tech University summarized laboratory testing
on the Isolator Row in accordance with Maine DEP testing protocol. Tests
demonstrated the following:
0 95% TSS overall removal at 8.1 gpm/sqft for US Silica OK-110 (110
micron).
0 80% captured on fabric.
• October 20, 2006 - Tennessee Tech University summarized laboratory testing on
the Isolator Row in accordance with New Jersey Center for Advanced
Technologies (NJCAT) testing protocol. Tests demonstrated the following:
0 60% TSS Removal at 3.2 gpm/sqft for Sil-Co-Sil 106 with accumulated
fines (D50 = 10 microns)
0 66% TSS Removal at 3.2 gpm/sqft for Sil-Co-Sil 106 (D50 = 22 microns)
0 71% TSS Removal at 3.2 gpm/sqft for Sil-Co-Sil 250 (D50 = 45 microns)
0 88% TSS Removal at 1.7 gpm/sqft for Sil-Co-Sil 250 (D50 = 45 microns)
• August, 2007 — NJCAT summarized its third party evaluation of the Tennessee
Tech test results and produced the "NJCAT Technology Verification Report
StormTech Isolator Row". Their verification is summarized as follows:
o Claim 1: A StormTech° SC-740 IsolatorT"' Row, sized at a treatment rate
of no more than 2.5 gpm/ft2 of bottom area, using two layers of woven
geotextile fabric under the base of the system and one layer of non-woven
fabric wrapped over the top of the system and a mean event influent
concentration of 270 mg/L (range of 139 — 361 mg/L) has been shown to
have a TSS removal efficiency (measured as SSC) of at least 60% for
SIL-CO-SIL 106, a manufactured silica product with an average particle
size of 22 microns, in laboratory studies using simulated stormwater.
o Claim 2: A StormTech° SC-740 IsolatorT"' Row, sized at a treatment rate
of no more than 2.5 gpm/ft2 of bottom area, using two layers of woven
geotextile fabric under the base of the system and one layer of non-woven
fabric wrapped over the top of the system and a mean event influent
concentration of 318 mg/L (range of 129 — 441 mg/L) has been shown to
have a TSS removal efficiency (measured as SSC) of 84% for SIL-CO-SIL
250, a manufactured silica product with an average particle size of 45
microns, in laboratory studies using simulated stormwater.
o Claim 3: A StormTech° SC-740 IsolatorT"' Row, sized at a treatment rate
of no more than 6.5 gpm/ft2 of bottom area, using a single layer of woven
geotextile fabric under the base of the system and one layer of non-woven
fabric wrapped over the top of the system and a mean event influent
concentration of 371 mg/L (range of 116 — 614 mg/L) has been shown to
have a TSS removal efficiency (measured as SSC) of greater than 95%
for OK-110, a manufactured silica product with an average particle size of
110 microns, in laboratory studies using simulated stormwater.
• June 2008 — The University of New Hampshire Stormwater Center releases the
Final Report on Field Verification Testing of the StormTech Isolator Row
Treatment Unit. Testing consisted of determining the water quality performance
for multiple stormwater pollutants. As of the June report, data was recorded for
17 storm events.
o TSS median removal efficiency — 80%
o Petroleum Hydrocarbons median removal efficiency — 90%
o Zinc median removal efficiency — 53%
o Phosphorus median removal efficiency — 49%
References:
1. February 23, 2005 Tenn Tech report
2. October 20, 2006 Tenn Tech report
3. August 2007 NJCAT Verification
4. June 2008 UNH report
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Weight 1341bs{60.8 kgj Nfaight 43 Ihs{1Q.5 kg]
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5.0 Cumulative Storage Volume�=; StormTech°
Tables 6 and 7 provide cumulative storage volumes for be input for quick cumulative storage calculations are
the MG3500 chamber and end cap. These tables can available at www.stormtech.com. For assistance with
be used to calculate the stage-storage relationship for site-specific calculations or input into routing software,
the retention or detention system. Digital spreadsheets contact the StormTech Technical Services Department.
in which the number of chambers and end caps can
TABLE 6-MC-3500 Incremental Storage Volume Per Chamber
Assumes 40% stone porosity. Calculations are based upon a 9"(229 mm)stone base under the chambers, 12"(305 mm)
of stone above chambers, and 6"(152 mm)spacing between chambers.
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66(1676) � 0 176.88(5.009) 32(813) 74.54(2.111) 97.60(2.764)
65(1651) 0 175.22(4.962) 31 (787) 71.71 (2.031) 94.25(2.669)
64(1626) Stone 0 173.57(4.915) 30(762) 68.83(1.949) 90.87(2.573)
63(1600) Cover 0 171.92(4.868) 29(737) 65.89(1.866) 87.45(2.476)
62(1575) 0 170.27(4.821) 28(711) 62.91 (1.782) 84.01 (2.379)
61 (1549) 0 168.61 (4.775) 27(686) 59.89(1.696) 80.55(2.281)
60(1524) 0 166.96(4.728) 26(660) 56.82(1.609) 77.05(2.182)
59(1499) 0 165.31 (4.681) 25(635) 53.72(1.521) 73.54(2.082)
58(1473) 0 163.66(4.634) 24(610) 50.57(1.432) 70.00(1.982)
57(1448) 0 162.01 (4.588) 23(584) 47.39(1.342) 66.44(1.881)
56(1422) 0 160.35(4.541) 22(559) 44.18(1.251) 62.86(1.780)
55(1397) 0 158.70(4.494) 21 (533) 40.93(1.159) 59.26(1.678)
54(1372) 113.04(3.201) 157.05(4.447) 20(508) 37.66(1.066) 55.64(1.576)
53(1346) 112.98(3.199) 155.36(4.399) 19(483) 34.35(0.973) 52.01 (1.473)
52(1321) 112.78(3.194) 153.59(4.349) 18(457) 31.02(0.878) 48.35(1.369)
51 (1295) 112.47(3.185) 151.75(4.297) 17(432) 27.66(0.783) 44.69(1.265)
50(1270) 111.86(3.168) 149.73(4.240) 16(406) 24.28(0.688) 41.00(1.161)
49(1245) 110.89(3.140) 147.50(4.177) 15(381) 20.87(0.591) 37.31 (1.056)
48(1219) 109.68(3.106) 145.12(4.109) 14(356) 17.45(0.494) 33.60(0.951)
47(1194) 108.29(3.066) 142.64(4.039) 13(330) 14.00(0.396) 29.88(0.846)
46(1168) 106.75(3.023) 140.06(3.966) 12(305) 10.53(0.298) 26.15(0.740)
45(1143) 105.07(2.975) 137.39(3.891) 11 (279) 7.04(0.199) 22.40(0.634)
44(1118) 103.26(2.924) 134.66(3.813) 10(254) 3.53(0.100) 18.64(0.528)
43(1092) 101.33(2.869) 131.85(3.734) 9(229) 0 14.87(0.421)
42(1067) 99.31 (2.812) 128.98(3.652) 8(203) � 0 13.22(0.374)
41 (1041) 97.18(2.752) 126.05(3.569) 7(178) 0 11.57(0.328)
40(1016) 94.97(2.689) 123.07(3.485) 6(152) Stone 0 9.91 (0.281)
39(991) 92.66(2.624) 120.04(3.399) 5(127) Foundation 0 8.26(0.234)
38(965) 90.28(2.556) 116.96(3.312) 4(102) 0 6.61 (0.187)
37(940) 87.82(2.487) 113.83(3.223) 3(76) 0 4.96(0.140)
36(914) 85.30(2.415) 110.66(3.134) 2(51) 0 3.30(0.094)
35(889) 82.70(2.342) 107.45(3.043) 1 (25) 0 1.65(0.047)
34(864) 80.04(2.267) 104.20(2.951)
33(838) 77.32(2.189) 100.92(2.858)
r����.,;,�� ..�:�.. ,�...��:r p,,,�;3n�,��� > �:u�,,,u�.�,s.�s.W,�rp���(25 mm)of stone foundation.
Contact StormTech for cumulative volume spreadsheets in digital format.
13 Call StormTech at 860.529.8188 or 888.892.2694 or visit our website at www.stormtech.com for technical and product information.
�
5.0 Cumulative Storage Volume� StormTech�
TABLE 7-MC-3500 Incremental Storage Volume Per End Cap
Assumes 40% stone porosity. Calculations are based upon a 9"(229 mm)stone base under the end caps, 12"(305 mm)
of stone above end caps, 6"(152 mm)of spacing between end caps and 6"(152 mm)of stone perimeter.
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66(1676) 0 45.65(1.293) 33(838) 12.53(0.355) 25.65(0.726)
65(1651) � 0 45.10(1.277) 32(813) 12.18(0.345) 24.89(0.705)
64(1626) Stone 0 44.55(1.262) 31 (787) 11.81 (0.335) 24.12(0.683)
63(1600) Cover 0 44.00(1.246) 30(762) 11.42(0.323) 23.34(0.661)
62(1575) _ 0 43.45(1.230) 29(737) 11.01 (0.312) 22.54(0.638)
61 (1549) 0 42.90(1.215) 28(711) 10.58(0.300) 21.73(0.615)
60(1524) 0 42.35(1.199) 27(686) 10.13(0.287) 20.92(0.592)
59(1499) 0 41.80(1.184) 26(680) 9.67(0.274) 20.09(0.569)
58(1473) : 0 41.25(1.168) 25(610) 9.19(0.260) 19.25(0.545)
57(1448) 0 40.70(1.153) 24(609) 8.70(0.246) 18.41 (0.521)
56(1422) 0 40.15(1.137) 23(584) 8.19(0.232) 17.55(0.497)
55(1397) 0 39.61 (1.122) 22(559) 7.67(0.217) 16.69(0.473)
54(1372) 15.64(0.443) 39.06(1.106) 21 (533) 7.13(0.202) 15.82(0.448)
53(1346) 15.64(0.443) 38.51 (1.090) 20(508) 6.59(0.187) 14.94(0.423)
52(1321) 15.63(0.443) 37.95(1.075) 19(483) 6.03(0.171) 14.06(0.398)
51 (1295) 15.62(0.442) 37.40(1.059) 18(457) 5.46(0.155) 13.17(0.373)
50(1270) 15.60(0.442) 36.84(1.043) 17(432) 4.88(0.138) 12.27(0.347)
49(1245) 15.56(0.441) 36.26(1.027) 16(406) 4.30(0.122) 11.37(0.322)
48(1219) 15.51 (0.439) 35.68(1.010) 15(381) 3.70(0.105) 10.46(0.296)
47(1194) 15.44(0.437) 35.09(0.994) 14(356) 3.10(0.088) 9.55(0.270)
46(1168) 15.35(0.435) 34.49(0.977) 13(330) 2.49(0.071) 8.64(0.245)
45(1143) 15.25(0.432) 33.88(0.959) 12(305) 1.88(0.053) 7.72(0.219)
44(1118) 15.13(0.428) 33.26(0.942) 11 (279) 1.26(0.036) 6.80(0.192)
43(1092) 14.99(0.424) 32.62(0.924) 10(254) 0.63(0.018) 5.87(0.166)
42(1067) 14.83(0.420) 31.98(0.905) 9(229) 0 4.95(0.140)
41 (1041) 14.65(0.415) 31.32(0.887) 8(203) 0 4.40(0.124)
40(1016) 14.45(0.409) 30.65(0.868) 7(178) 0 3.85(0.109)
39(991) 14.24(0.403) 29.97(0.849) 6(152) 0 3.30(0.093)
38(965) 14.00(0.396) 29.28(0.829) 5(127) Stone 0 2.75(0.078)
37(948) 13.74(0.389) 28.58(0.809) 4(102) Foundation 0 2.20(0.062)
36(914) 13.47(0.381) 27.86(0.789) 3(76) 0 1.65(0.047)
35(889) 13.18(0.373) 27.14(0.769) 2(51) 0 1.10(0.031)
34(864) 12.86(0.364) 26.40(0.748) 1 (25) 0 0.55(0.016)
. j25�r.
Contact StormTech for cumulative volume spreadsheets in digital format.
Call StormTech at 860.529.8188 or 888.892.2694 or visit our website at www.stormtech.com for technical and product information. 14
, �
StormTech° ��
Detention•Retention•Water Quality
�tormTech �onstruc�ion �uid ��iv�Zonof �ii��'�,5 - ,
,
REQUIRED MATERIALS AND EQUIPMENT LIST
• Acceptable fill materials per Table 1
• Woven and non-woven geotextiles
• StormTech solid end caps, pre-cored and pre-fabricated end caps
• StormTech chambers, manifolds and fittings
NOTE: MC-3500 chamber pallets are 77° x 90° (2.0 m x 2.3 m) and weigh about 2010 Ibs. (912 kg) and MC-4500 pallets are 100° x 52° (2.5 m x 1.3 m) and weigh
about 840 Ibs. (381 kg). Unloading chambers requires 72° (1.8 m) (min.)forks and/or tie downs (straps, chains, etc).
IMPORTANT NOTES:
A.This installation guide provides the minimum requirements for proper installation of chambers. Non-adherence to this guide may result in damage to chambers
during installation. Replacement of damaged chambers during or after backfilling 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 rows 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.
B. Care should be taken in the handling of chambers and end caps. End caps must be stored standing upright. Avoid dropping, prying or excessive force on chambers during
removal from pallet and initial placement.
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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. 9° (230 mm)min. Install underdrains if required.
Compact to achieve a flat surface.
Call StormTech at 888.892.2694 for technical and product information or visit www.stormtech.com 1
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Install manifolds and lay out woven scour geo- Align the first chamber and end cap.of each row Continue installing chamber rows by overlapping
textile at inlet rows [min. 17.5 ft(5.33 m)] at each with inlet pipes. Contractor may choose to postpone chamber end corrugations. Chamber joints are
inlet end cap. Place a continuous piece(no stone placement around end chambers and leave labeled "Lower Joint—Overlap Here" and "Build
seams)along entire length of Isolator° Row(s) in ends of rows open for easy inspection of chambers This Direction—Upper Joint." Place non-woven geo-
two layers. during the backfill process. textile over Isolator Row chambers(if specified).
Maintain minimum -9" (230 mm) spacing
between rows
f���i���� �������� �torm�ech Is�lafi�or ��w I�etai�
COVER PIPE CONNECTION TO EN� OPTIONAL INSPECTION PORT
CAP N�ITH ADS GEOSVNTHETICS 601T
STORMTECH END CAP NON-N�OVEN GEOTEXTILE
'IL"(300 mm�MIN INSERTION CHANIBER
(MC-1500 SHOW N) EN�CAP
(MC-0500 SHOW N)
MANIFOL�STUB � ..� � �- - �
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SITE GESIGN ENGMEER
NOTE:MANIFOLD STUB MUST BE LAID HORIZONTAL (za•�soo R�R�I NnN REcomimieNoeo�
FOR A PROPER FIT IN END CAP OPENING. za°�soo�,�»�HOPe nccess aiPe RecawReo rwo�nreRs oF.�os ceosvNrHencs ais�vrmi woveN
USE FHCTORV PRE-COREC ENC CHP GEOTEXTILE BETNEEN FOUNDHTION STONE ANC CHAMBERS
83'(2.5 m)MIN WIDE STRIPS(MG35�0)
10.3'(3.1 m)NIIN WI�E STRIPS IMC-0500)
Ir�sert irilet and outlet manifolds a rniriimum 12"
(300 mm) into chamber end caps. Manifold header
should be a minimum 12° (300 mm)from base of 2
end cap.
Initial Anchoring of Chambers - Embedment Stone
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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.
Backfill of Chambers - Embedment Stone
,2"�300 mm, ,
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UNEVEN BACKFILL EVEN BACKFILL PERIMETER NOT BACKFILLED PERIMETER FULLY BACKFILLED
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 mm) between adjacent chamber rows or between chamber rows and must be fully backfilled, with stone extended horizontally to the excavation wall.
perimeter.
Call StormTech at 888.892.2694 for technical and product information or visit www.stormtech.com 3
Backfill of Chambers - Embedment Stone and Cover Stone
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� - � � ,p��f��,-�., � ..- y.�, �� _ �
. �i'6� � ��y� ���� F _ <
� . , . . . . . . . ... . . a �d�iF� -?#��`.e . . .��$".+�b��� . :. � -'� ... .. . . -.. ...t-.. .. .... ... ..e• a...
Continue evenly backfilling between rows and around perimeter until embedment Only after chambers have been backfilled to top of chamber and with a
stone reaches tops of chambers and a minimum 12° (300 mm) of cover stone minimum 12" (300 mm)of cover stone on top of chambers can skid loaders
is in place. Perimeter stone must extend horizontally to the excavation wall for and small LGP dozers be used to final grade cover stone and backfill
both straight or sloped sidewalls. The recommended backfill methods are material in accordance with ground pressure limits in Table 2. Equipment
with a stone conveyor outside of the bed or build as you go with an excavator must push material parallel to rows only. Never push perpendicular to rows.
inside the bed reaching along the rows. Backfilling while assembling StormTech recommends the contractor inspect chamber rows before placing
chambers rows as shown in the picture will help to ensure that equipment final backfill. Any chambers damaged by construction equipment shall be
reach is not exceeded. removed and replaced.
����� ����1��� �� ���������i��� — �"��� ������'`��� ���i���� ��� ���a���
�, oo NOT wsT���
Y, I�WII�I�� INSERTA-TEE AT
.,� ' I�a � � �CHANIBER JOINTS
W��
��"` J' . . � "►. '4`k'y I�W��L ..� . . .. A
i� ' ,R,M� CONVEYANCEPIPE ���� �� ���
=- " � " � .� �� MATERINL MAV VARV I�UII�II I�EI_
i����_ . .c�� . �, '�� (PVC.HDPE.ETC) lii;ll Il���lli G'Y ,.
f yy- 1
- _�. . �� � �+ w��.I �y'`"' r..T FIr•ti' '��` ���"' `=�IEI'�II�I��� � � ' y'��
. _ .. .� � '�-;J k-r.���, "�1°'al�'ti ��3+.�:. L +r
� � ���__..� � —.i- ,� _��L�II�� n
I � _- i' ._�-;i', ''�_I I IF �I I u�l -=I IF �, I.�. � p
yai�'l � ' . � '�." � . INSERTATEE L i �L IL ,i,L�u.I��i� i �. IL.-,L�u.I� i._i -i�f
, _ �}-}.�; I�I . � � �':� CONNECTION �:I 1 L _i L' INSERTNTEETOBE
' � ' " L�=N.�lk �
� - � (X) INSTALLED,CENTERE�
OVER CORRUu'NTION
.. • PLACE ADS GEOSYNTHETICS 315 WOVEN
� - � GEOTEXTILE(CENTERED ON INSERTA-TEE SECTION A-A SI�E VIEW
���• . "' ,' - INLET)OVERBE��INGSTONEFORSCOUR
� ; PROUEOTOEX I ESMUSTEXTEN�fiE15DOmrc)
y� k � • � - _ � PHST CHAMBER FOOT N1AX OIANIETER OF HEIGHT FRONI BASE OF
yL .".` -5-^ �.
CHAMBER WSERTATEE CHAMBER(X)
����Yh w.�;��� L�a�{ �� 1.� ,yr. _ � ' sc-�ao io((z umm' a(ioumm
s � } h� ocaso �o°(zsu mm a°�ou mm
s�. w 3!�
C '�' ��...^ " _ . � i iw. J
} } } } } ��} } (� MC-3500 12"(300 mm) 6"(150 n'�m)
II�SIaII I�OI�'WOVEI� gEOIEXIIIE OVEr SIOI�E. GEOIE�IIIE ITIUSI OVErIap 24 (VOO ITIITI� ITIII�. NOTE: MC-0500 12"(300mm) 8"(200mm)
where edges meet. Compact at 24" (V00 mm)�I I�II. fI�IIGr IrCAVGI pCArCAIIGI W�ll I r�WS. PARTNUMBERSWILLVNRVBASE�ONINLETPIPEMATERIALS. INSERTATEEFITTINGSAVAILABLEFORS�R2G,S�R35 SCH401PS
CONTACT STORMTECH FOR MORE INFORMATION. GASKETED&SOLVENT WEL�,N-12,HP STORM,C-900 OR DLICTILE IRON
Call StormTech at 888.892.2694 for technical and product information or visit www.stormtech.com 4
Table 1—Acceptable Fill Materials Figure 1 —Inspection Port Detail
„ ,.. `'. ��, _.. � �� n ��,��a���, � '�.�° *��o ;'� .'E; � �jt_,B ,d�a
�.,.. - ._..-, ,� ,., . ,
"" � '� " � " " 18"(450 mm)MIN WIDTH
PAVEMENT � �
QD Final Fill:Fill Material for layer'D' Any soil/rock materials,native N/A Prepare per site design engineer's plans.Paved CONCRETE COLLAR
starts from the top of the'C'layer to the soils or per engineer's plans. installations may have stringent material and
bottom of flexible pavement or unpaved Check plans for pavement preparation requirements. �r•�soo mm�Nv�oP�asr wun,E
finished grade above.Note thatthe pave- subgrade requirements. . cov�R oR�R.aro�io Hin,ceo
ment subbase may be part of the'D�IayeC. PART#2712AG10N
I CONCRETE SLAB SOLID COVER:1299CGC
QC Initial Fill:Fill Material for layer Granular well-graded soil/aggregale AASHTO M145 I Begin compaction after 24"(600 mm)of material over 8"(200 mm)MIN THICKNESS GRATE:1299CG5
'C starts from the top of the embedment mixlures,<35%fines or processed A-1,A-2-4,A-3 the chambers is reached.Compact additional layers in �
stone('B'layer)to 24"(600 mm)above aggregale.Mosl pavemenl subbase or 12"(300 mm)mau.lifts to a min.95%Proctor density F�ExP RT#212NVFX
the top of the chamber.Note that malerials can be used in lieu of lhis AASHTO M43' forwell-graded material and 95%relative densityfor (IF SPECIFIE�)
pavement subbase may be part of the layer. 3,357,4,467,5,56,57,6, processed aggregate materials.
� ����C. ��,68,�,78,8,89,�,�� 10"(250 mm)INSERTA TEE 10"(250 mm)ADS N-12
PART#1UN12ST45SI H�PE PIPE
� WSERTA TEE TO BE CENTERED
0B Embedment Stone:Fill lhe I Clean,crushed,angular stone AASHTO M43' No compaction required. on,coRRucnr�oN cREsr
surrounding surrounding chambers from 3,4
lhe foundalion slone('A'layer)lo lhe'C
layerabove. cHAMBER
� Foundation Stone:Fill below Clean,crushed,angular stone AASHTO M43' Place and compact in 9"(230 mm)max lifts using (MCA5U0 SHOWN)
chambers from lhe subgrade up lo lhe fool 3,4 iwo full coverages with a vibratory compactor.z,3
(bollom)of lhe chamber.
PLfASE dUdTTf: �
1. The]isted AASHTO designations are forgradations only. The stone must also be clean,crushed,angular.For example,a
specification for#4 stone would state:"clean,crushed,angular no.4(AASHTO M43)stone".
2.StormTech compaction requirements are met for A'location materials when placed and compacted in 9"(230 mm)(max)lifts using
two full coverages with a vibratory compactor.
3. Where infiltration surfaces may be comprised by compaction,for standard installations and standard design load conditions,a flat
surface may be achieved by raking or dragging without compaction equipment.For special load designs,contact StormTech for
compaction requirements.
Figure 2—Fill Material Locations
ADS GEOSYNTHETICS 601T NON-WOVEN GEOTEXTILE ALL AROUND PAVEMENT LAYER(DESIGNED
CLEAN,CRUSHED,ANGULAR STONE IN A&B LAYERS `BY SITE DESIGN ENGINEER)
/ �
. . . — — '.5 . .
p arr �a�E �NPA�Eo
unous� urnuc o� i Es M1 nv occua MC-4500-7.0'21 m MAX
PERIMETERSTONE . i _s ovea o��� m�R��. � 24" � �
e C _ � (fi00 mm)NIIN* MC-3500-8.0'(24 m)MAX
'r � 12"(300 mm)MIN
/�
EXCAVATION WALL ��f O �� j
(CAN BE SLOPED OR VERTICAL) _ MC-4500-60"(1525 mm)
MC3500-45"(1145 mm)
Once layer'C'is placed
any soil/material can
A be placed in layer'D'
I � � �DEPTH OF STONE TO BE DETERMINED up to the finished
NICA500-12"(300 mm)MIN I � BY SITE DESIGN ENGINEER 9"(230 mm)MIN grade.Most pavement
NIC-3500-6"(150 mm)MIN —1 � 9" MC-4500-100"(2540 mm) �p^ 300 mm TYP
EN�CNP SUBGRADE SOILS (230 mm)MIN MC-3500-77"(1955 mm) ( � subhase soils can he
used to replace the
materials requirements
oflayer'C'or'D'atthe
design engineer's
discretion.
Call StormTech at 888.892.2694 for technical and product information or visit www.stormtech.com 5
Table 2—Maximum Allowable Construction Vehicle Loads6
NOTES: � � , � : �, � � � , � � �, � � � ,� � • � � �, �
1. 36"(900 mmJ of stabilized cover materials over the chambers . � .� , . �, � , .. �,� , � � , � . �
is required for full dump truck travel and dumping. ,� , ,� , . , ,. �, , ,, ,. �, , � , , .
, �,,< k. .�, ,, <e,x�e �� q.
2. During paving operations,dump truck�le loads on 24" '- - - -
(600mmJ of cover may be necessary.Precautions should Q Final Fill 36"[900] 32,000[142] 16,000[71] 12'[305] 3420[164] 38,000[169]
be taken to avoid rutting of the road base layer, to ensure Material Compacted 18"[457] 2350[113]
that compaction requirements have been met,and that a 24"[610] 1850[89]
30"[762] 1510[72]
minimum of 24"(600 mm)of cover exists over the 36"[914] 1310[63]
chambers.Contact StormTech foradditional guidance on �Initial Fill 24"[600] 32,000[142] 16,000[71] 12"[305] 2480[119] 20,000[89]
allowable axle loads during paving. Material Compacted 18"[457] 1770[85]
24"[610] 1430[68]
3. Ground pressure for track dozers is the vehicle operating � 30"[762] 1210[58]
weight divided by total ground contact area for both tracks. ,_ 36"[914] 1070[51]
Excavators will exert higherground pressures based on 24"[600]� 24,000[107] 12,000[53] 12"[305] 2245[107] 16,000[71]
loaded bucket weight and boom e�ension. Loose/Dumped 18"[457] 1625[78]
24"[610] 1325[63]
4. Mini-excauators(<S,OOOIbs/3,628 kg)can be used with at 30"[762] 1135[54]
least 12"(300 mmJ of stone over the chambers and are � 36"[914] 1010[48]
limited by the maximum ground pressures in Table 2 based 18"[450] 24,000[107] 12,000[53] 12"[305] 2010[96] 5,000[22]
on a full bucket at maximum boom e�ension. 18"[457] 1480[71] (static loads only)5
24"[610] 1220[58]
30"[762] 1060[51]
5. StormTech does not require compaction of initial fill at 18" �Embedment 12"[300] NOT ALLOWED NOT ALLOWED ' 12"[305] 1100[53] NOT ALLOWED
(450 mm)of cover. However,requirements by others for 6" Stone 18"[457] 715[34]
(150 mm)lifts may necessitate the use of small compactors 24"[610] 660[32]
at 18"(450 mm)of cover. 30"[762] 580[28]
6"[150] NOT ALLOWED NOT ALLOWED NOT ALLOWED NOT ALLOWED NOT ALLOWED
6. Storage of materials such as construction materials,
equipment,spoils,etc.should not be located over the Table 3-Placement Methods and Descriptions
StormTech system. The use of equipment over the
StormTech system not covered in Table 2(ex.soil mixing '� ' '� ' ' ' ' '� '
equipment,cranes,etcJ is limited.Please contact � � � ' �� � � �
StormTech for more information. � a� = � � + s, �
�D Final Fill A variety of placement methods may be 36"(900 mm)minimum cover pozers to push parallel to Rollertravel parallel to rows
7. Allowable track loads based on vehicle travel only. Material used.AI I construction loads must not required for dump trucks to rows.4 only until 36"(900 mm)
Excavators shall not operate on chamber beds until the total exceed the maximum limits in Table 2. dump over chambers. compacted cover is reached.
backfill reaches 3 feet(900 mmJ over the entire bed. —
�C Initial Fill Excavator positioned off bed recom- Asphalt can be dumped into Small LGP track dozers and Use dynamic force of roller
Material mended.Small excavator allowed over paver when compacted skid loaders allowed to only after compacted fill
chambers.Small dozer al lowed. pavement subbase reaches grade cover stone with at depth reaches 24"(600 mm)
24°(600 mm)above top of least 12°(300 mm)stone over chambers.Roller travel
chambers. under tracks at all times. parallel to chamber rows only.
ADS"Terms and Conditions of Sale"are available on the ADS website, Equipment must push
www.ads-pipe.com. parallel to rows at all times.
Advanced Drainage Systems,the ADS logo,and the green stripe are - '— -
registered trademarks of Advanced Drainage Systems. OB Embedment I No equipment allowed on bare chambers. No wheel loads allowed. No tracked equipment is No rollers allowed.
StormTech°and the Isolator°Row are registered trademarks of Stone Use excavator or stone conveyor Material must be placed allowed on chambers until
StormTech,Inc positioned off bed or on foundation outside the limits of the a min.12"(300 mm)cover
#10816 07/14 � stone to evenly fill around all chambers chamber bed. stone is in place.
to at least the top of chambers.
02014 Advanced Drainage Systems, Inc. DA Foundation No StormTech restrictions. Contractor responsible for any conditions or requirements by others relative to subgrade bearing
Stone capacity,dewatering or protection of subgrade.
Call StormTech at 888.892.2694 for technical and product information or visit www.stormtech.com 6
Coordinated Capital Improvements Program (CCIP)
Request for Proposals and Application
201 5 Application Cycle
South WashingtonWatershed District
Return to:
2302 TowerDr.
Woodbury,MN55125
jloomis@ci.woodbury.mn.us
Due by: April 3, 2015 at 4:00 p.m.
Overview
As a result of developing and implementing its water resource management plan, working with local
government units within the watershed on local water plans and capital projects, and carrying out its
permitting program, the District is aware of the challenges posed to sound, comprehensive surface water
management by existing urban development. Existing development and impervious surface within the
watershed constructed at an earlier time may not have applied due attention to minimizing and managing
stormwater impacts under pre-existing regulatory conditions. Stormwater management in these areas
may be improved through retrofitting and during redevelopment. However, space and available options
often are constrained and measures may be expensive.
To facilitate actions to improve stormwater management in existing developed areas, the District
administers a Coordinated Capital Improvement Program (CCIP) to provide financial assistance to local
land use and public works authorities for water quality improvement projects. The CCIP seeks to:
Facilitate local government units within the District to explore water quality improvement
opportunities and incorporate those opportunities into routine infrastructure operation and
maintenance projects;
Promote closer collaboration between local units and the District on water quality improvement
efforts as an element of capital improvement plans;
Foster stormwater management innovation and create demonstration/education examples; and
Defray local costs in the broader, watershed-wide interest of improving water quality.
Applications are now being accepted for 2015 project funding. Awarded projects must be complete
before Dec. 31, 2016. Grants may be awarded for up to 35% of the total project cost. CCIP grants
are funded by stormwater utility fees, and therefore are allocated to projects in the SWWD
Management Unit where the fees are collected. Up to $500,000 in CCIP funds will be allocated to
projects in the South Washington Management Unit for 2015.
Eligibility
All municipalities and county agencies proposing projects within the South Washington Management
Unit of the SWWD are eligible to apply. Capital improvements and maintenance projects are eligible.
New and redevelopment projects must provide treatment beyond what is required by SWWD standards
to be eligible.