Manchester Stormwater Sites

8/3/2019 Manchester Stormwater Sites

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MANCHESTER LID STORMWATER RETROFITManchester, Washington

Pre l iminary “Top 10” Si tes - October 2011

A L A S K A

S P R I N G

3 R D

ALDER

Location: E Main Street at Colchester (SE

Typology: Detention Pond Pocket Parks

Project Type: County

Description of Retrofit :

Excavat ion of exist ing pr ivate parcel to create a sur face detent ion

faci l i ty that can funct ion as publ ic open space dur ing the dry season.

The depth of the adjacent storm dra in inf rast ructure requi res an up to

10-foot excavat ion to provide f low control wi thou t backwater ing the

exist ing publ ic storm dra in system. The bottom of the detent ion faci l i ty

may be designed to provide water qual i ty t reatment for low f lows pr ior

to discharge. Project provides f low control as an of f- l ine system.

Addit ional Benefit:

Communi ty - New downtown publ ic open space to f aci l i ta te•

communi ty gather ing and events

Educat ion - Highly v is ible opportuni ty to edu cate publ ic on impacts•

of urban stormwater runoff

Construction Elements (does not include soft costs) :

Costs include:•

excavat ion and haul-

reta ining wal ls and seat wal ls for per imeter of faci l i ty-

storm dra in inf rast ructure and f low control-

hardscape, landscape and s i te furnishings-

consider a l ternat ive covered detent ion due to depth of system-

construct ion cont ingency-

E x i s t i n g S i t e

K e y M a p

T a n n e r

S p r i n g s P a r k , P o r t l a n d , O R

M a d i s o n

V a l l e y S t o r m w a t e r P r o j e c t ,

S e a t t l e , W

A

p h o t o : B e n j a m i n L u k o f f

Site 3





A L A S K A

S P R I N G

3 R D

ALDER


Street improvements a long downtown main st reet to faci l i ta te

complete st reet concepts and integrate bioretent ion faci l i t ies

and permeable pavements. Streetscape improvements requi re a

par tnership wi th adjacent proper ty owners to the west to a l low for

publ ic walkway and ameni t ies zone wi thin the exist ing park ing area

that l ies outs ide the r ight-of-way. Permeable pavement to reduce

runoff and bioretent ion to provide water qual i ty t reatment pr ior to

discharge to the downstream system. Water qual i ty t reatment is

l imi ted to sur rounding pavement areas, however improvements may

intercept of f-s i te f lows f rom parcels.

Addit ional Benefit:Mobi l i ty - Complete Street st reet elements provide formal ized and•

control led access to downtown businesses

Communi ty - Wide walkways a l low opportuni ty to integrate st reet•

furnishings to promote pedestr ian act iv i ty and create a v ibrant

downtown center

Communi ty - Improvements mainta in exist ing dr iveway access for •

adjacent parcels

Safety - provides t ra f f ic ca lming and access control•

Construction Cost Range (does not include soft costs) :

Costs include:•

pavement demol i t ion and excavat ion and haul-

permeable pavement for park ing areas-

storm dra in inf rast ructure-

bioretent ion soi l and plant ings- walkway and furnishings for pedestr ian zone-



S t o r m w

a t e r p l a n t e r s o n W a t e r S t r e e t ,

P o r t T o

w n s e n d , W A

W i n s l o w

W a y , C i t y o f B a i n b r i d g e

I s l a n d ,

W A

Site 5

Location: Colchester Dr ive E

Typology: Commercial ROW Flat Streets

Project Type: Partnership





A L A S K A

S P R I N G

3 R D

ALDER


Formal izat ion of intersect ion wi th curb and walkway improvements to

improve pedestr ian connect ions and a l low integrat ion of bioretent ion

for water qual i ty t reatment of road runoff . A long the steeper s lopes of

E Main St bioretent ion faci l i t ies wi l l be cascading stormwater planters.

At E Colchester St ra in gardens wi l l be used between the intersec t ion

and adjacent on-st reet park ing. Water qual i ty l imi ted benef i t to

sur face runoff wi thin project boundary.


Mobi l i ty - Formal ized intersect ion provides separate grade•

separated pedestr ian walkway

Mobi l i ty - Curb bulbs reduce crossing distances at intersect ion•

Communi ty - Curb bulbs a l low opportuni ty to integrate st reet•

furnishings to support pedestr ian t ra f f ic

Safety - provides t ra f f ic ca lming, access control and accessibi l i ty•

improvements


Costs include:•

pavement demol i t ion and removal-


concrete curb and gut ter and walkway-

concrete wal ls at stormwater planters-

bioretent ion soi l and plant ing-



S t o r m w

a t e r p l a n t e r s , P o r t T o w n s e n d ,

W A

S t o r m w a t e r p l a n t e r s a t c o r n e r , P o r t

T o w n s e n d , W A

Site 6

Location: Inters ectio n o f Colchester Dr E &

Typology: Commercial ROW Flat Streets,

Commercial ROW Cascade






A L A S K A

S P R I N G

3 R D

ALDER

Location: E Main Street

Typology: Commercia l ROW Cascade



Cascading stormwater planters and pedestr ian improvements a long

the south road edge. Stormwater planters to provide water qual i ty

t reatment and f low at tenuat ion for f lows dra ining to and throu gh E

Main St. This s i te includes an opportuni ty to provide a control led

discharge to the cascading stormwater planters f rom 2nd Ave E, see

Si te 62.


Mobi l i ty - Walkway provides separate grade separated pedestr ian•

faci l i ty

Mobi l i ty - Street edge improvements and plant ings nar row•

percept ion of road width and provide passive t ra f f ic ca lming for roadway

Communi ty - Area has been ident i f ied as having s igni f icant•

dra inage issues and is highly v is ible, maximizing educat iona l

benef i t


Costs include:•

excavat ion and haul or stormwater planters-

concrete wal ls for storm water planters-


bioretent ion soi l and plant ings-

concrete curb and walkway-

pavement restorat ion-



S E A S t

r e e t c a s c a d i n g p l a n t e r , S e a t t l e ,

w A

G r o w i n

g V i n e S t r e e t c a s c a d i n g

s t o r m w

a t e r p l a n t e r , S e a t t l e , W A

Site 10





C A L I F O R N I A

A L A S K A

C H E S

T E R

Location: Madrone Ave E between Cheste

Alaska Ave E

Typology: Resident ia l ROW Flat Streets, R

Project Type: Pr ivate


Regrade and ra ise the gravel drop-of f area in f ron t of the church to

match adjacent publ ic roadway grades. Use exist ing depression as an

opportuni ty to insta l l below ground detent ion for upstream f lows f rom

Cedar St E. A new culver t across Cedar St E wi l l hydraul ica l ly connect

runoff to the detent ion faci l i ty. New paving for the church drop-of f

area to be constructed using permeable pavement. Provides water

qual i ty t reatment and f low control for l imi ted area.


Mobi l i ty - Formal izat ion of drop-of f area improves and faci l i ta tes•

access to the church

Educat ion - Highly v is ible opportuni ty to edu cate publ ic on impacts•

of urban stormwater

Habi tat - Mainta in la rge, exist ing t ree and improve growing•

condi t ion through soi l amendments and soi l condi t ioning


Costs include:•

storm dra ins, detent ion pipes and f low control st ructure-

permeable pavement-

soi l amendment and seeding-


E x i s t

i n g S i t e

P o r o u s

p a v i n g i n p a r k i n g d r i v e a n d

w a l k w a

y , S e a t t l e , W A

P o r o u s p

a v e m e n t d r i v e w a y a n d f i r e

l a n e , M e d i n a , W A

Site 15





C A L I F O R N I A

VAN BUR

TRUMAN

POLK

PATRICI

MANCHE

Site 29 (Typical Pla n)


Modi fy the st reet edge and reduce pavement to a l low expansion of

exist ing di tches and integrate bioretent ion. Bioretent ion faci l i t ies wi l l

provide water qual i ty t reatment and at tenuate sur face runoff be fore

discharging to the downstream wet pond. Expansion of the exist ing

underground detent ion is a lso proposed to increase on-s i te detent ion

capaci ty. Increased at tenuat ion and water qual i ty t reatment wi l l

improve funct ion of wet pond and Duncan Creek.


Communi ty - L imi ts disturbance to adjacent landscaping and•

pr ivate ameni t ies of adjacent parcels

Mobi l i ty - Traf f ic ca lming through reduct ion of exist ing roadway•

width (us ing chicanes)


Costs include:•

pavement demol i t ion-



expansion of underground detent ion-


Location: E Raint ree Lane



E x i s t

i n g S i t e

B i o r e t e n t i o n r e t r o f i t i n r o a d w a y ,

P o r t l a n d , O R

W i d e n e d d i t c h a n d s w a l e f a c i l i t y ,

S e a t t l e

, W A





C A L I F O R N I A

VAN BUR

TRUMAN

POLK

PATRICI

MANCHE

Location: Cal i fornia Ave E south of Van Bu

Typology: Detent ion Pond Pocket Park



S t r e e t s i d e r a i n g a r d e n , S e a t t l e , W A

B i o r e t e n t i o n f a c i l i t y w i t h p o c k e t p a r k ,

P o r t l a n d , O R

Site 32


Replace exist ing, wide pavement shoulder at bu s stop wi th bioreten-

t ion area. Bioretent ion to provide water qual i ty t reatment for sur face

runoff and f low at tenuat ion pr ior to discharge to the exist ing wet pond

to the south. Improvements to the wet pond parcel include landscape

enhancements and construct ion of a new UIC wel l to improve water

qual i ty t reatment and inf i l t ra t ion.


Mobi l i ty - Improved pedestr ian faci l i t ies to/f rom bus stop•

Mobi l i ty - Traf f ic ca lming through formal st reet edge adjacent to•

bus stop

Mobi l i ty - Traf f ic ca lming as bus mainta ins control of t ravel lane•

dur ing stops instead of pul l ing out of roadway

Habi tat - Improved landscape and t ree canopy wi thin wet pond•

parcel

Communi ty - Opportuni ty to improve seat ing area at bus stop•


Costs include:•

Pavement removal and excavat ion-

Bioretent ion soi l and plant ing-

Concrete walkway, curb and bus stop improvements-

Increased t ree canopy and landscape enhancements wi thin-

pond

UIC wel l to improved inf i l t ra t ion potent ia l-






C A L I F O R N I A

VAN BUR

TRUMAN

POLK

PATRICI

MANCHE

Location: East of A laska Ave E, between H

and Polk

Typology: Detent ion Pond Pocket Park



D e t e n t

i o n p o n d w i t h p e d e s t r i a n / p a r k

a m e n i t i e s , S e a t t l e , W A

D e t e n t i o n p o n d w i t h p e d e s t r i a n / p a r k

a m e n i t i e s , S e a t t l e , W A

Site 39


Expand capaci ty of exist ing wet pond by excavat ing and regrading

the southwestern s ides of the pon d. Insta l l UIC wel ls to improve in-

f i l t ra t ion pr ior to discharge f rom the pond. Landscape enh ancement

of pond edge to improve water qual i ty t reatment. O ther s i te improve-

ments to a l low for wet pond parcel to be used as a pocket park wi th-

out compromis ing the funct iona l i ty of the wet pond. Improvements

focus on water qual i ty, f low control and reduct ion of peak f low in

Duncan Creek.


Communi ty - A l lows communi ty access to new pocket park for •

outdoor, passive recreat ion act iv i t iesHabi tat - Improved plant ing and t ree canopy to faci l i ta te and•

encourage use of new park

Educat ion - Opportuni ty to educate pu bl ic on impacts and needs to•

manage urban stormwater runoff


Costs include:•

regrading and improvements to access dr ive-

excavat ion to increase pond volume-

pedestr ian t ra i l and landscape enhancement around pond-

per imeter

increased t ree canopy-

UIC wel ls for improved inf i l t ra t ion potent ia l-






C A L I F O R N I A

VAN BUR

TRUMAN

POLK

PATRICI

MANCHEDescription of Retrofit :

Expansion and enhancement of exist ing di tch network to integrate

bioretent ion faci l i t ies and provide water qual i ty t reatment. Layout and

conf igurat ion of bioretent ion areas based on exist ing dr iveways and

ut i l i ty inf rast ructure in the publ ic r ight-of-way. Water qual i ty and at-

tenuat ion to increase funct iona l i ty of downstream systems. Capture of

runoff f rom surrounding pavements and upstream parcel area.





percept ion of road width and provide passive t ra f f ic ca lming for roadway


Costs include:•



dr iveway replacement-


Location: Cal i fornia Ave E between Center

Truman St

Typology: Commercia l ROW Flat Streets



B i o s w a l e

i n R O W , S e a t t l e , W A

W i d e n e d d i t c h a n d s w a l e f a c i l i t y ,

S e a t t l e

, W A






C A L I F O R N I A

VAN BUR

TRUMAN

PATRICI

MANCHE

POLK


Expansion and enhancement of exist ing di tch network to integrate

bioretent ion faci l i t ies and provide water qual i ty t reatment. Layout

and conf igurat ion of bioretent ion areas based on exist ing dr iveways

and ut i l i ty inf rast ructure in the publ ic r ight-of -way. Water qual i ty and

attenuat ion to increase funct iona l i ty of downstream systems. Capture

of runoff f rom l imi ted sur rounding pavements and large upstream

parcel areas.





percept ion of road width and provide passive t ra f f ic ca lming for

roadway


Costs include:•



dr iveway replacement-


Location: Alaska Ave E between E Patr icia

Truman St

Typology: Commercia l ROW Flat Streets



W i d e n

e d d i t c h a n d s w a l e f a c i l i t y ,

S e a t t l e , W A

B i o s w a l e i n R O W , S e a t t l e , W A






A L A S K A

S P R I N G

3 R D

ALDER


Retrof i t of exist ing gravel dr ive lane wi th pe rmeable pavement

and subbase to provide storage for upstream dra inage areas that

f requent ly f lood the dr ive lane and adjacent proper t ies. Bioretent ion

faci l i t ies incorporated where space a l lows to increase storage

capaci ty of upstream f lows pr ior to s i te discharge.


Mobi l i ty - Improves access to adjacent parcels and formal izes•

exist ing gravel dr ive

Habi tat - Ra in garden provides opportuni ty for communi ty•

part icipat ion in plant ing events and garden maintenance


Costs include:•


permeable pavement-

pavement pr ivate lane-


bioretent ion soi l and plant ing-


Location: Denniston Lane


GI, Detent ion Pond Pocket Park

Project Type: Pr ivate


B i o r e t e n

t i o n f a c i l i t y w i t h p o c k e t p a r k ,

P o r t l a n d

, O R

P r i v a t e d r i v e / a l l e y w i t h p e r m e a b l e u n i t

p a v e r s

, S e a t t l e , W A

Site 58





C A L I F O R N I A

A L A S K A

C H E S

T E R


Expansion and enhancement of exist ing di tch network on the uphi l l

(west ) s ide to integrate bioretent ion faci l i t ies and provide water qual i ty

t reatment. Bioretent ion to a lso at tenuate f lows pr ior to discharge to

downstream system. Layout and conf igurat ion of bioretent ion areas

based on exist ing dr iveways and ut i l i ty inf rast ructure in the publ ic

r ight-of-way.





percept ion of road width and provide passive t ra f f ic ca lming for

roadway


Costs include:•




dr iveway restorat ion-


Location: Val ley Ave E between Main and



E x i s

t i n g S i t e

B i o s w a l e i n R O W , S e a t t l e , W A

G r a s s y b i o s w a l e i n R O W , S e a t t l e , W A

Site 67





C A L I F O R N I A

A L A S K A

C H E S

T E R


Reconstruct ion of the exist ing st reet to di rect sur face runoff to the

south and into cascading stormwater planters. Stormwater planters

to provide water qual i ty t reatment for road runoff and at tenuate f lows

pr ior to discharge to the downstream system. Downstream system has

been ident i f ied to have f looding concerns and l imi ted inf rast ructure

due to proximi ty to water f ront.





Costs include:•



new roadway pavement and walkway-

concrete stormwater planter wal ls-



Location: E Spruce St between Val ley and

Typology: Resident ia l ROW Cascades


E x i s

t i n g S i t e

C a s c a

d i n g s t o r m w a t e r p l a n t e r s i n R O W ,

S e a t t l e , W A

C a s c a

d i n g s t o r m w a t e r p l a n t e r s i n R O W ,

S e a t t l e , W A

Site 68

Manchester Stormwater Sites

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