HomeMy WebLinkAboutApplication PWE 6/4/2009
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[City of Springfield
Development Services Department
225 Fifth Street
Springfield, OR 97477
Site Plan Review
Site Plan Review Pre-Submittal: _
Site Plan Review Submittal: 0
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City of Springfield
Phone: 726-3685
Fax: 736-1021
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Applicant Name:
Icompany:
/Address:
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IAPPlicant's Rep.:
Icompany:
!Address:
. Leonard 1. Goodwin
225 Fifth Street, City Hall, Springfield, OR 97477
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Tim Bingham
Larie Council of Gove~ents
Phone: 682-4410
Fax: 682-2635
""~"",8:?,:::i,~!~~~:,s.,;:.,,,,~Suite 500. Eug.ene~,<=>,~.~?401
I Property owner:' ,City of Spriilgfield
Icompany: N/A
!~~.dr~,~~:,_,225 Fiftll SU'ee~City Hall, Springfield. OR 97477 ,
IASSESSOR'S MAP NO: 17033500 ITAX LOT NO(S): 307
I Property Address: '303 South 5th Street
ISize of Propertv: 116,66 Acres IX! Square Feet '0
! Pro'??:,E!,d N,~~e of Project: Spr~g"field Mill Race Ecosystem Restoration p'?ie,ct
IDescriPtion of If you are filling In tlils form by hand, please attach your proposal descrIption to this application.
Proposal:, See Attachment A,
IExistinq Use: Mill Pond
INew Imoervious Surface Coveraqe (Includinq Bldq. Gross Floor Area): 0
ISignatures: Please 51 nand print,your name and date in the ,appro riate box on the next
Phone: 726-3685
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Fax:
736,1021
Associated Applications:
Ipre-sub Case NO.:Pr(looq - iXOl~ Date:
Icase No.: Date: Reviewed by:
IAPPlication Fee: $' Jti-(00.?- ITechnical Fee; $ ----- Ipost~qe Fee: $-
ITOTAL'FEES: $ _c31Lo~ 'l PROJECT NUMBER:
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PRE.SUBMITTAL REC'O
JUN 4 2009
taft/lor
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Reviewed bV:'11
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Revised 1/1/08 Molly Markarian
1 of 10
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Owner Signatures
This application form is used for both the required pre-submittal meeting and subsequent
complete application submittal. Owner signatures are required at both stages in the application
process. An application withtt the Owner's origin.al signature will not be accepted.
Pre-Submittal
The undrrsi9ned acknowledg 5 that the Il)!.errnJltlon In this application Is correct and accurate for scheduling of the
Pre- Sub ittal Meeting. ,/ ./
Owner: ~ '
/. .,'7'"
( _. _' - Date: ~~ /;:;::7c::7 /'
~ature / /
Leonard ], Goodfln f~ity of Springfield
'Print '----"
Submittal
I represent this application to be complete for submittal to the oty. Consistent with the completeness check
performed on this application at the Pre-Submittal Meeting, I affirm the Information identlfled by the City ,as
necessary for processing the application Is provided herein or thelnformatlon will not be provided. If not otherwise
contained within the submittal, and the City may begin processing the application with the information as
submitted. This statement serves as written notice pursuant to the requirements of ORS 227.178 pertaining to a
.complete application.
Owner:
Date:
Signature
Leonard 1. Goodwin for CitY of Springfield
Print
PRE-SUBMITTAL REC'O
_ JUN.: 4 2009
t.
Revised 1/1/08 Molly ,Markarian
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2, of 10
ATTACHMENT "A""
Springfield Mill Race Ecosystem Restoration Project - Phase II
Response to Checklist Submittal Requirements
Narrative (Project Description)
The proposal represents Phase II of the two-phased "Springfield Mill Race Et'osystem
Restoration Project," which is a high priority project for the City of Springfield and the U,S.
Army Corps of Engineers, In addition to providing a more reliable and sustainable supply of
clean, cold water to the Mill Race for improving essential fish habitat for Upper Willamette
Chinook salmon and for supplying water to beneficiaries, such as farmers and drinking water for
Springfield residents, the overall two-phased. project wili restore 2.4,3 miles arid nearly 50 acres
of Mill Race riparian and wetlands habitat. Phase I is located eiltir,ely outside'the city limits and
Urban Growth Boundary (UGB) of Springfield with construction scheduled to begin in
spring/summer 2009;,Phase II is located mostly within the city limits - the mqst southerly 500
feet of tax lot 307 is outside city limits - and entirely within the UGB. Construction is expected
to begin as soon as permits are 'issued. "
The primary focus of Phase II is the conversion of the Booth-Kelly Mill Pond; approximately 45
acres in size, to a diverse eco-system of wetlands, upland prairie, riparian fore'st, and a
meandering MillRace channel that will provide Upper Willamette Chinook salmon with direct
access to the Main Stem oftheWillamette River. Phase'I1 restorationactiviti~s will occur
entirely within tax lot 307 which is owned by the City of Springfield, The following are the
major restoration and construction activities of Phase II:" ,
. Dewater Mill Pond;
. Remove and dispose of contaminated sediments;
., Remove, demolish, and dispose of the Carpentry Shed, the Mill Pond Dam and bridge;
. Remove invasive species and replant with native species;
. Excavate new Mill Race channel (0.9 milesll.50 acres);
. Restore habitat: wetlands (11.20 acres), upland prairie (2 acres), riparian forest (23 acres);
. Construct fire protection pond (0,50 acres) and two stormwater treatment ponds (2 acres);
. Construct pedestrian trails, boardwalks, overlook (4,8 acres); "
. Provide parking,by paving existing crane shed and install,] bike racks, /'
The project will not result in ,any' n~w structures, impervious surfaces, or empfoyees,
In addition to the 45 acre Mill Pond and restoration area, other existing uses o'ri tax lot 307
include a mix of manufacturing and professional offices to the west of the Mill Pond with
associated parking and utilities totaling approximately 16,50 acres, The remaining areas to the
south and north are undeveloped '(approximately 54,50 acres) and, at this time, there are no plans
for future expansion, Total size of tax lot 307 is 116 acres '
'"
The proposal is consistent with the objectives of the Booth'Kelly Mixed UsesDistrict, ie to
protect significant environmental resources, and with the City's Local Wetland Inventory and
Natural Resources Study that promotes restoration of the Mill Pond. '
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See Attachment B for a list of Figures.
Copy of Deed - City of Springfield is owner of tax lot 307,
Copy of a Preliminary Title Report - City of Springfield is owner of tax lot 307.
Copy of the Site Plan Reduced to 8.5"xll" - See Attachment C.
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Right-of-way Approach Permit Application - Not applicable: no frontage on ODOT facility
Three Copies of the Stormwater Management System Study - The proposal will not create
any new structures or other impervious surfaces and, therefore; no additional storm water runoff
will be generated by this project. Two stormwater ponds will be constructed in the western
corner of the tax lot to provide some level of management for runoff from existing structures and
impervious surfaces on the western portion of the site, In terms of how storm water flows will be
affected by the overall project, the following is a brief narrative describing existing conditions
and expected changes.
Under existing conditions, the Mill Race drains local stormwater runoff as well as flows
originating from the inlet connection with the Middle Fork Willamette River. When the inlet
becomes hydrologically disconnected from the Middle Fork during dry, summer months, water
flow is supplemented by pumpi~g. Several stormwater outfalls drain directly to the Mill Race
ands to Jasper slough, which joins the Mill Race upstream of the 28th Street Bridge, Diversion
pipes at Gorrie Creek and Quarry Creek divert flows from the Mill Race back to the Middle Fork
via hydraulic control structures.
Under proposed conditions, the inlet would be connected to the Middle Fork for a longer
duration than under existing conditions and, thereby, reducing pumping needs, A flow
constrictor and overflow weir will be constructed in the'Mill Race Channel during Phase I
limiting the flows diverted into the Mill Race under flood conditions exceeding a 2-year storm
event to the same flow as under existing conditions.
The activities proposed as part of the Springfield Mill Race project include fill and removal of
sand, gravel, rock material, placement of large woody debris, and installation of concrete blocks
within FEMA Zone AE, The proposed'activities also include excavation of material and
removal of an existing stormwater outfall within the FEMA Zone AE Floodway, No other fill or
encroachment activities are proposed with the Zone AE Floodway. The proposed activities
within the Zone AE Floodway do not result il). an increase in floodway elevations,
The project does not affect the local stormwater drainage area discharging into the,Mill Race,
As a result of the Mill Dam removal, a given discharge in the Mill Race would result in a water
surface elevation up to one foot lower than under existing condition in the area between 18th
Street ands Jasper Slough. An excavated channel is proposed within the Mill Pond area and
storm flows in this area would result in lower water surface elevations than under existing
conditions, The reduction in flood elevations is up to ten vertical feet in the vicinity ofthe dam,
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PRE.SUBMITIAL REC'D
JUN 4 2009
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An existing 48~inch starrriwater autfall pipe alang the narth bank afthe Mill Pand near the Mill
Dam wauld be retained under praject canditians. The project will nat affecfthe quality ar
quantify afthe starmwater effluent. On the south bank aftheMill Pand, existing staimwater
effluent wauld be 'routed through two. new starmwater detentian/treatmenfpands. The pands
. .. . .
will be vegetated to. allaw filtratian. Flashbaard riser with.a large vertical range will allaw
adaptive management af water levels' anddetentiah times to. aptimize pallutant settling, The
pands are designed to. improve water quality and attenuate peak flaws during'starm events,
Far mare infaimatian pertaining to. the hydrolagic and hydraulic analysis canducted far the "pre"
and "past-praject" canditians far this project, refer to. Attachment D, '
Three Copies of the Traffic Impact Study - Natapplicable: the propasal is :'a habitat
restaratian project and, therefare, daes nat result'in the canstructian af any new struCtures or the
conversian af existing uses that wauld generate traffic demand.
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Seven Copies of the Following Plan 'Sets for Pre-Submittal OREightetm Copies of the
Following Plan Sets for Submittal ~,
a. Site Assessment of Existing Conditions:
. Vicinity Map - See Figure 1 (includes watercaurses). Nate: applicable Water Quality
Limited Watercaurses and setbacks are: Mill Race (setback = 50 feet) and Mill Pand
.. . 1
(setback =50 feet), 'See Figures 2 (Springfield Lacal Wetland Inventory), 4 (sails), 5 &
llC (aerial phata shawing what is remaining and what will be remayed),
. Flaadplain/flaadway baundaries - See Figure 3, As shawn, there are no. flaad hazard
zanes affecting the Mill Pand, , .
. Time af Travel Zanes - The mast nartherly portian af the Mill Panel: is affected by a
99-year time af travel zane related to. a wellhead lacated near 1-105 tind Q'h Street. No.
!=lther travel zanes affect the Mill Pand area, '
b. Site Plan - See Figure 5 where 2008 aerial phata shaws the existing Mill Pand,
surrounding undevelaped areas, and the existing buildings and ather related develapment
uses in the western partian af the site, .
. Buildings - See Figure 5 far existing structures. No. new strticture~' arepropased
. Fences, walls, starage, equipment, trash receptacles, si'gns: Withinlithese categaries af
'uses, trail signs are propased to. be located along the propased pedestrian trails and
baardwalk as shawn an Figure 5, ..
. Parking spaces: As shawn an Figure 5, the flaor af the existing Cfarie Shed will be
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paved and striped in accardance with City aff7street parking standards including the
provisian af ane disabled parking space, The existing Crane Shed!.building will
re'main in its current lacatian and candiiian; the anly propased chahge is paving and
striping af the Crane Shed flaar. I_
. Develapment Area: No. new structures ar imperviaus surface areaS. are p'ropased.
'New trails and baardwalks are propased as shawn an Figure 5 blit\vill be canstructed
with perviaus materials. These perviaus areas represent a very sniiill percentage af
the project and are less than ane-tenth af ane percent af the lat area,
. Solar Access: No. new structures are propased, f,
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PRE.SUBMITTAL' RECIO
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. Loading, vehicular, pedestrian circulation. Figure 5 shows the proposed parking area
(Crane Shed) that will rely on the existing circulation already provided to the
structure. No loading areas are proposed, See Figure 5 for location of proposed
trails, boardwalks, and overlooks. '
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. Figure 5 shows the various streets and rights-of-way that border tax lot 307,
Frontages along each street are: South B Street = 960'; Quarry Street = ],255'; Hill
Street = 970'; South F Street = 47'; Railroad Tracks = 2,533'. None of the existing
streets have c';lrbs and gutters and, therefore, no new curb cuts are proposed and no
existing curb cuts are proposed for closure, '
o Bicycle parking sp'aces - 3 spaces will be provided within the Crane Shed parking
structure as required by City development code, These spaces will be designed,
located, and constructed in accordance with S~ciion 4.6-]45 through 4.6-]50 of
Springfield's development code, .
. Existing and proposed transit facilities - None.
. Open Spaces, recreational areas, and other public uses. Theoverali Mill Pond area is
approximately 45 acres in size and all of it is considered public open space with some
recreational uses in the form of trails, boardwalks, and overlooks.
o Phased Development - there are no current plans for developing future uses and
phases on tax lot 307,
c. Improvement and Public Utilities Plan
o Existing/proposed easements: Given the nature of this project and the City's
ownership of the tax lot, no easements are proposed. There may be existing
easements associated with existing utility lines and poles.
. Existing streets, alleys: There are no alleys. Approximate street right-of-way and
paving widths:
>South B Street: 50'/25
>Quarry Street: 40'/10'
>Hill Street: 40' /0'
>South F Street: 0'/20'
o Street Lighting: None.
. Traffic control, fire hydrants, power poles, etc, No traffic control or fire hydrants are
located on-site; however, there appears to 1:Je fire hydrants located off-site and along,
South B Street and, South 7'h Street - refer to Figure 1 ]B, As shown on Figure] ]A,
two 115 kilovolt e]ectrical transmission corridors cross tax lot 307, One is located at
the west end of the Mill Pond where the pond tapers down to a channel and runs in a
north-south direction containing three lines and six power poles, The second corridor
is located along th~ southerly boundary of tax lot 307 and runs in an east-west
direction for almost the entire width of the lot where it then turns and aligns in a
north-south direction along the east portion of the lot and crosses over the Mill Race
and continues northward, The power poles are located outside the footprint of the
restoration project
. Existing/proposed utilities. No proposed utilities. See Figure I]B for water mains.
Public water mains are generally available to the site at South B Street and South 7'h
Street, and on Quarry Street east of South Sixth Street See Figure 1] C for sanitary
sewer and storm water facilities, Sanitary sewer and storm pipes are generally located
in the northwest corner of tax lot 307. The only pipe that appears to encroach into the
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JUN 4 2009
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project footprint 'is a stormwater pipe in the general vicinity of the ,Mill Pond Dam.
All other facilities on this figure appear to be either manholes, catch basins or outfalls
(storm water) and these are concentrated in the most western portion oftax lot 3.07
were there is existing development and uses,
d. Grading, Paving, Stormwater Plan
. See Figure 7 for Fill/Removal within Wetlands
. See Figure 8 for Channel Profiles
. See Figures 9A and 9B for Grading Cross-sections
. See Figure 9C for Typical Cross-sections
. Roof Drainage Patterns: No new structures proposed. See Figure fOA for topographic
and drainage patterns.
. Impervious/Pervious Drainage Areas: All existing structures/stree,ts/parking shown
on Figure 5 are impervious. The proposed activities/uses are all pervious,
. Amount of earthwork: Fill = 6,556 cubic yards; Cut = 69,622 cubic yards
. See Attachment D for description of drainage conditions pre and ppst-project
e. Landscape Plan '
. See Figure 6 and Attachment E for Planting Plan Table.
f. Architectural Plans ~ No structures proposed
g. On-Site Light Plan - No proposed outside lighting,
h. Additional Materials Required - None.
Additional Standards/Applications
. Riparian Protection - The Mill Pond and Mill Race have 5.0 foot riparian protections,
For the Mill Pond, the top of Bank is shown on Figure 5 and is generally located one
foot above the ordinary high water line around the perimeter of the Mill Pond. The
extent of riparian restoration landward from the existing top ofballk is about 75 feet
on the south bank. Along the north bank, the limit of restoration is approximately the
location of the existing top of bank, The future top of bank along the north side,will ,
be located considerably further south than its current location providing a significant
riparian buffer from the new channel and proposed wetlands, The buffer width will
narrow back down at the wesi end of the pond as the new channel ~ligns with the
location of the current channel. The proposed restoration project will result in the
protection of and a higher functioning ecosystem thim under curretit Mill Pond
conditions. '
. 27 trees will be removed in the most westerly and easterly portions of the Mill
Pond/Mill Race, A.TreeFelling pemiit will be submitted upon completion of the pre-
submittal meeting. . , - '.
. Wetland identification has been submitted to DSL as part of the Mill Race General
Authorization permit
. A Joint Application Permit for General Authorization for Fish and;Wetlands Habitat
Enhancement has been submitted to DSL and the U.S, Army Corps of Engineers,
. An LDAP application will be submitted upon approval of the Site Plan Review
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request .
· Annexation of the southerly portion of tax lot 307 will likely occur if and when that
area develops,
PRE-5UBMllTAl REC'O'
JUN 4 2009
ATTACHMENT B
LIST OF FIGURES
FOR SPRINGFIELD MILL RACE RESTORATION PROJECT - PHASE"
Figure 1, Location Map (Phases 1 & If)
Figure 2, Wetlands Study Area Map (Phases 1 & 1I)
Figure 3, Flood Zone Study Area Map (Phases 1 & 11)
Figure 4, Soils Study Area Map (Phases 1 & 11)
Figure 5. Site Plan Review (Phase 1I)
Figure 6, Planting Plans Typical Sections Stations: J08 ~ 155
Figure 7. Fill/Removal in Wetland Areas
Figure 8, Channel Profiles Stations:) 45 +00 to 105 +00
Figure 9A, Grading Cross-Sections Stations: 155+00 to 131 +00
Figure 9B, Grading CrosscSections Stations: 130+00 to 106+00
Figure 9C, Typical Cross-Sections Stations: 155+00 to 144+00; 143+00 to 138~00; 138+00 to
131+00; 131+00 to 119+00; 119+00 to 108+00 '
, Figure 10A Erosion Control West Portion of Mill Pond
Figure 10B Erosion Control East Portion of Mill Pond
Figure l1A. Existing Electrical Facilities
Figure llB, Existing Water Facilities
Figure 11 C. Existing Sanitary Sewer and Stormwater Facilities
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Location Map - Phases I & II
Figure 1.
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Spring Ie Phases I and II
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Figure 2. Wetlands Study Area Map - Phases I & II
Springfield Mill Race
Wetlands -- Springfield Local Wetland Inventory
National Wetland Inventory in portions of Lane County
Wetlands Determination in Phase I and Phase II Areas
Legend
I ~ Phase I
.. Phase II
Wetland Determination TetraTech
1- -I Springfield Local Wetland Inventory
i ~ Lane County NWI
I Springfield Urban Growth Boundary
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FiguI 3. Flood Zone Study Area Jap - Phases I & II
Springfield Mill Race
FEMA Floodway, 100 yr Floodplain, 500 yr Floodplain
Legend
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I Phase II
I , Springfield Urban Growth Boundary
FLOODZONE-FEMA
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Figure 4. Soils Study Area Map
Springfield Mill Race Restoration Project
Legend
Hydric Soils
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Map Units
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c=J Lane County Soils - Map Units
Phase I and Phase 1\
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Figure 5. Mill Pen" Restoration Site Plan
figS_JirtpJon..r ,.,'.pdf
Legend Data Source: Tetra Tech. Inc,
Proposed Restoration Planting
~ Ash Forested Wetland
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E......'"..nt Wetland
Emergent Wetlandl
Seasonal Pond
~ Riparian
Upland Prairie
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large Woody Debris
Top of Bank
Project Elements
~ Stormwater Treatment Ponds
--"'"' Trail
....--- Boardwalk
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c Trail Signs
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Figure 6
Planting Plan - Typical
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125+00 126+00 127+00 128+00 129+00 130+00 131+00 132+00 133+00 134+00
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452 - - :- :- -- -- I -- -- -- - - T -- - - - - t- -- - - -- -1 -- - - -- - -j- - - -- -- --- I - - - - --j - - - -- -- I' - - -- - -- I :- --:- ---:- --: -- 452
450 I I I I . I - I' I I - I . .' 450
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m-"----I.::::-J ~--=.:..l______C, ~~05 =:r=I=r=:J=C=---=-c:: m :::]______.::~L::)~.::r:::-i- m J::~I=-J=::J=C 1=[" m-'C--1~=C--r:_,-::r----r=v_ m
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480--j-1 + --,--;----1---1--- 480 ,-_:1=-I-=j'_--1_-t_--~-_ )_~' 480 -\l~I--t------ -----1-, 480 _::--j,-_--_,-,I..::,_----j_--l-----+_-I__, 480'---'--i---1--~ -'--;:::"""-1'---' 480
475 -- - -- .1 -- ---~ __J -- ---- 475 -- ---1 --- - -- 475-~-----'----J-"-,,(---L, 475 _ _ __ --' L 475==-L=- _'___<_/_c_'__ 475
m-.::+--I- ~---.J---t----i -1- m--r.\.::i ,kI---i---rl-=~- m---+ ~t--i L'V i =-1= m ::-+ ______i--~::.::j---, <':: m 'C : =I'-'-t--=__)::--t=i= m
460 ~-+-I- -1-- ,-\-1= 460 :::\!J+-;-+--"i'-t--+---I- 460 _-+_I_+-:-:.:r-~--.....;.--[- 460--~--,-~---1--+__-.;.-1- 460 --+---1-+--1-+__-1--1- 460
n6 t I::T -1 -- = C:::r =c-:- ~~6 ::::I- =[=:).::.:J = r::::l -= 1=-= ~~6:::r =-1::::' -!:- =-J = r =r =1= m - J ::-1 _ 1': ::r: C =r =1':::- m c-=:r =1= J::: = = c:::r =c m
m. tu.-ro ;-;o!~~-, ;It-'',\q[~r~ t-;t, ",!-;7 m- ~ ,-;;-!""!-;-'~'4MJJ ,01 ---- ~~6- ~ -!'" '~'~~~bg'~' ;-;;!~I m -:Ti '-,~i,~,,~;, ~~d~b"-;:' '" !-;7, ~~6, ~m~ ,-;71"":,, ;lQ~tt7J,~, "'~, ~~6
-100 -75 -50 -25 0 25 50 75 100 -100 -75 -50 -25 0 25 50 75 100 -lOa -75 -50 -25 0 25 50 75 100 -100 -75 -50 -25 0 25 50 75 100 -100 -75 -50 -25 0 25 50 75 lOa
4901--I-I--T--I-~'---- 490 - - -T'-'-'-'-I- 490 - T-'-r-J-r-:..r-'- 490 --J'-- ,--,-;-~--' 490'---:r-I-'--'-'-:::r-C 490
485 - ---' __L--l-_L 485 -T "":'1, ----J__~--_L_ --, 485 ----"- -1- '--,- -- 485 -- ~-' -l-,_l'lACUoN"-->-_I_ 485 -- ---l----J-I-- --, 485
480 - -+- -1- -'- -'7f- t COMMONI- 480 -- --j- - i-- -'-- -t ,--- t: -+-1-- 448705 :: ~i =1= t::J _- t. z'/ 1=. 480-l -1- -+ :j ~C FlU -1---' 480 }- j:: -/-:t --j - r- --+ -r--:; 480
475 _....L - - L ---' - ~ DCAVATIOIL 475 -- -- -'- l --1 - -L - -- - --/ 475- - - --, --- '~_~__' 475 0-= _ _ _ ~ _ _ ---1 - _ , 475
470, - -t -1- - + --~ - r- <q"l -1- 470 - -i -1- I ---1-- [---I- -- I 470-,- =1" 1 -1 1 r 1- m _~ =r =_ __1- -i:::-_ 1-- ;-::.:: I::. m"=-- i- ~ ~- ~1_ ~ -=:! :-(--- m
~~6'--:: -1- -- I ,-- 1'" -1- 1-= ~~60f -=1-- f-- -, --- j- _I -!-= ~~6::: T =1::-1"''''50- --t =r= 460 - j --II -1--1- --+ --'-!- 460 - -1- -1- -J -I - j j ---1- 460
455-T-I------.-.-,-,-' 455 -T I-r,-r---l'-/- 455 -T-'!--T'-J--r-j-' 455 ----/-'---'-"-'--1- 455 --'----I-.-'~--'::r---- 455
450,,-- -- j;__I__l,___I_ 450 -4 -1-- -,--1--1- ---I ,-- 450 --- -, -~ -,- - ,,-- 450 ,-I + ",j,___I__L__ , 450 ---+---- 4-4--1- I, 450
4 ,-:T" I I,,' llTJi,7t, " 5 I, 1 ",l"l', iJ-:t, I "~, "'J.' ""T., ",lJ.lJ.llU "r"" 445 -"~,."-".I-""'l--,t-:-:itt\'-t"r.-;,--t",-,,,,r.-:-,,, 444405 -.~,-"-:i',-"-'I.I-",,:i'--"---""I,,"I-'J,':T,, -i~-- 444450
4~6 o"l'I"'~';-;O,~,~~~u 'I'''':-'-'-,'~;O-_L-,-;-:;- "::....1.'~~~t~d"I--'-- m-.-'I'-:-: --'~tO--I-!- 440, "-----49+!fll" -'--.-. 1oHUO'
-100 -75 -50 '-25 0 25 50 75 100 -100 -75 -50 -25 0 25 50 75 100 -100 -75 -50 --25 0 25 50 75 100 -lOa -75 -50 -25 0 25 50 75 100 -lOa -75 -50 -25 0 25 50 75 lOa
490 --T--- -------'---, 490 -'--'-'----'--r---r-I-- 490 -----'---/-.1----'-T-:-/--' 490------,---1---- ~--' 490-,----------,-----'--1- 490
485 ----1___-1- -,___J_L-!-_!_ 485---i-~!-.1----J-,----I.- ,- 485 ---'--- -~-->----- 485 __--l___~....J_+_--1-I--- 485c---'--I--:----'-L---I-- 485
480 --+-1-'1 -'-'-::1---1- 480 ---t -I--i-:J-"---' --1--' 480 -, --1-1,-J--(=,-I= 480 :;--1 -1--I---;-I--I---:-r 480 ---I-I--T--i --+-::1-;-' 480
475 __-L_____ ~_L -----, 475 _____.1 _L_~ 475 --",,6.- __J_,_________ 475 ,,-==--.L~----__;,r_- 475<--=--~----L- -- 475
470-+-1---j,,---j--j--t---1- 470 ---t--I-+-j-t---+-", 470--+--j-'!----I---j--i--i- 470 ~---j- .-t---t-J:---,-+-=-I- 470---t-. .L-----l:.--='_=_~ 470
465 - - 465 . , - 465 - - - - -'-.-- ,,,L -- -- - --- 465 :-, - -- --~- .- - ---- 465 -1- - --'--l--~ ,- -- - - 465
460 - + -1- , -....,..- r- -+ -j- 460 - --I- -1- -t- -, - +--- --t' -1--- 460 - --I- -1- +- ---=r-- j- --+ --I-- 460 - --r --1-- +- -1- +--- -~ --1- - 460, c- -t- -1- ~-- ----! -, -1 -1- 460
m= J:. =1-= l- ::] = C:::t = c: m ::: I =1= r-l = r::: =r: =- j::: ~~6= I =r:= J- :::J = 1.:::J = [.::, ~~6 ~:: -1 =1 ~ r::] = r =r = C-, m, ~ J:: =1= ~...: ~ = c: -L = C ~~6
~~6 "I,;to ,,-;:!;-;o ,~, ~ ~j!2J ,ot.ll" !-;7, .- ~~6 - ~ ~!"'.-~, ~ ~~~J ,It,;,,!- -, ~~6 --1' ,-;;-~;" ,~, ~,; -t1-- -,T - r.-:-' ~~6, ~,t If1 tl,lll"~" ;o;'4&WJ ,;~, iI ,--' ~~6. ~"IJl~! '" ,~" "i'lTt~ ,-,-~, '" t--- ~~6
-100 -75 -50 -25 0 25 50 75 100 -lOa -75 -50 -25 0 25 50 75 100 -lOa -75 -50 -25 0 25 50 75 100 -100 -75 -50 -25 0 25 50 75 100 -lOa -75 -50 --25 0 25 50 75 100
490 - I -1- T' - r::::::r -c 490 --:r -1- I -1- ,- -1 -1--' 490'--- -T -1- r -1 - ,- --;' -1- 490 ____ J. ~:'::,- ]'_ :-',] = C :J.- =1= 4905 "I -1---] -, - r--1- -,- 490
485 - --- ,-,--:.... --- 485 - -- - -1------- - 485 ":~--' ~,-- ----!-;,----, 485 - -, - ~ 48, ----, ..,--~--- ~-I-- 485
480 '_-- -+- -I-_:t --::- t:::1 :-=1_-', 480 -- -+ -I-:t --1- t: --+ -r -- 480 ~ --r -I -- -j -, - j- -j- -1- 480 -_lo. =-_!.:..:- j--__ -_j =-- r- _~ _/7---, 480 -::t -1- -- --I ~ t--- --j - i- - 480
475 -L_ - - 475 _-L__ -J_ ----",---- 475,-----....J-Lu-"-r_- 475 - - - - 475 -- __L__L_~__ 475
m - + -1-+ ~ ---= t-- -+ -f- m - + -I-:t:::-i- r--t-I= m ,::- !""-~ ---j J-~t =r- - m :::::t __ __ ~-t--=J:---:=,( i= m= _ _~-_:l:-=~ --:;=--=: -t- m
460 -----I- -1-,-- - , -;:..... -+ -1- 460 - + -1-,-- -~- 1- -+ -1-- 460 c- -+ -1- +-, - j- --t --1- 460 - -+ -1- -j-----i -- +__--- -1---- 460 - --I- -1- +- --. - t- ---t- -1- 460
455 I-I--J-- ~-,-:::t-I- 455 - :r-I-r---,-.--r-' 455 c-:r-I-"-'-::r-C' 455 __'-, --_--1- 1 I_-_r---r-_I=-=' 455 --,--.-----,-,--- -1-- 455
450':: ----- - :--<-1- --- 450 -- ---- -1-+------1---,_- 450;'-- ---l--I-+---,--'- '450 --l- - I-_L - 450 ---+--1--+-- --1----1----, 450
445 +--I-+--'-t----:t-l- 445 - --:t;--1-J--:-J-I- 445 '-.,-r.-I--r-:--j-"---+-I- 445 -I--.--;-;-j-t---j--I-' 445 --r- I--+---' j-.--~ 1- 445
440 --Y'''.'''':IIII~~12~Jlllilll:11 - 440 '1111:1I11~~I/~~III:IIII~111 .-440 _:III:IIII.IIII:lllli~!UJlljlt 440 .1111;llltiI4/!JJ":1111 440 - 1~1'--;-;-.~III~~~lru'JII!-I'i""Ii:III- 440
-lOa -75 -50 -25 0 25 50 75 100 -lOa -75 -50 -25 0 25 50 75 100 -lOa -75 -50 -25 0 25 50 75 100 -100 -75 -50 -25 0 25 50 75 100 -100 -75 -50 -25 0 25 50 75 100
490 -I-I-,----,--I--- 490 ---) '-1-'--.------' 490 ,n:r--r-]-]-----' 490 - T---I-'--'-C---- 490---I------ -, ,'-- 490
485 -----!----J-I--- -1- 485--_-__-l--I_L_L_L__, 485 - ---1- -- -;--1-_1_. 485--+--------l--~- -L--1,... 485,-- --I-L--'_1--,-l-_L, 485
480 --::t -1-- J,_ -i - i- :1-r 480 -- -+ -1- 1: --j - t: 1-- ;-- - 480 -::t -i- +- -,] - i- -r -1- 480 -'I-I-:t -t - C -;- 7" t-' 480 -1-1- -t- --j - In::! ----1-' 480
475 - - -- J_ -l_ I-- -- - -, 475 - _L - - -- _J _ --- _ '-_ 475 -- _ _..L --1 --- -- J. _ _ 475 _ _ _ _ --1_ _ ~/_ _, 475 _ _ _ _ _~ --' __ L -_ 475
470 -+-I--f---j-I----j-f- 470-+-I-t----j--I--t-l- - 470 -:::P",i- 1---1'--+--+--=.1- 470-l--=1 '----i--j------j-- 470 +-j---l=--!-.=-b- 470
465 - -, 465 ~ 465 -- - -,~ -;-, 465 -- --'- -I - _-~- -.;. - -- 465 - -'- - =- -=-~-,=- ,-='- --, 465
460 -- + =-1--- -,- _-.- -+ =1= 460 -- -+ -I-:t= ='-:1 =-;- --+ ~ 1:-:. 460 - -+ -1- + --j - j_ --+ -I----' 460 - -+ -1- + =-j - +__ - -1-, 460 - --I- -1- +- -1- ,--1, -1- 460
455 =':r-I-'--'-'-:::r-- 455 -:r-I-r,-r--:::.r-I--- 455-T-'--'-C:::r-I-- 455 --T~'I-T'-'-:J-I-- 455 c-I-I-'--r----'--I-' 455,
450 -- - -!- --' - I- --~- 450 - - - ,-I - I- - -- 450 -- -+- -1- J-- ----I - --- - - 450 -- + -- --- _ -1 - I- -- - - 450 ~-- - - -l- ---J - ~ ---" - - 450
~~6 - ~ ;-;0);-;0 II, - r.: -1- m - - -;;-!""~'1':mt7J '0' "'!" m - ~ -1- U\WW ,It, "'!- ~~6., "It.,-'-;-!;oIlT.'I'\'Jlif} lift"-;~, ~~6 ~,!ti ,-'-;-!1Ii ,I"q~H17J ,~t - ~~6
--100 -75 -50 --25 0 25 50 75 100 -lOa -75 -50 -25 0 25 50 75 100 -100 -75 -50 -25 0 25 50 75 100 -lOa -75 -50 -25 0 25 50 75 100 -100 -75 -50 -25 0 25 50 7.5 100
c
B
A
" . " ,. 0
GRAOING CROSS SECTIONS ~ VERT - NOTES
,. . ,. >0. 0
STATIONS 131+00 TO 155+00 HOR
SCALE IN FEET (2V: 1H EX)
PRE.SUBMITTAL RE
JUN 4 2009
EXCAVATE FtRE SUPPRESSION POND AS SHOWN ON SHEET C-2
DIMENSIONS OF TYPICAL GRADING SECTIONS SHOWN ON SHEET c-9
PlANTlNG REQUIREMENTS SHONN ON SHEET L-3
PRELIMINARY DESIGN NOT FOR CONSTRtJr.T1ON
I SH[[T NNoIEI 1!5 C6 GRAOIMCi CROSs SECTIONS II
Jay ustRHNJE:. t(REY.PRJCE tLNT1TLED 1IOF/I(SPAC()
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PRE-SUBMITTAL REC till ~ i i
<D EXCAVATE SEASONAL PONDS AS SHOWN ON SHEET rUN 4 2.009 0 j u
o DIMENSIONS OF TYPICAl. GRADING SECTIONS SHOWN ON SHEET c-e
PlANTING REQUIREMENTS SHOWN ON SHEET L-3
2
3
4
,
, I
Figure 9B Grading Cross Sections
490 j 490 c-l - .:, _ 490', - -- -I - - - 490 '_-- -1- - -I 490 'c_ 490
4B5 c ._1 _ _ __ 1 _ _ 4B5 "-- __ - 1.- 485 --' - I J - 485 ~ -~ - 485 c - - -. 485
480 - ~ - i - - _ - 1,-_ 480;, , __- i_-' 480 L _ _' ---'-, ' 480-- :1- - 1 - - - _i 480 ~ 1 - ,-- - I --, 480
475 " -1 _ __..L..J - 475 .;-,< _ ~, 475' _J - 475 _~ - 475 ~ ,~- 475
470 '~---I -- 470- " t - ] 470 - -+ - -+-- ---I t -r - 470 '-- + -I - , ,--. -;--- - - 1-' 470 c. -- -',- +- '1 - L. -- f-- -- 470
465 465 ,-- ~ - ~ -,--,--~ 465 465, '- + -'. 465 ' =~ -. 465
460 - 460 ~,- + - - -.............. - - 460 ~ -- ...1 460 ~ -, 1 1 460 ; ~ - i -, '~' 460
455 -, --- ,-- 455 ~-- J - ,- , - '1'- 455 ~ :::r ~ 'J - , 455- T - I - - -- - - --' 455 =n ,- - -- --- - - - ,- , 455
o 450 0- --' ' 450 -- -- J -, - 1 J - - 450 ~ - - J-- - -- 1- 4 -- - i_., 450 e- -l- - ~ --' - l-- - 1-,- 450 -- -- --1- -I - -- I--- -, - , 450
~~6 ,CL,o:,,;Oi;o;,-r.,~~-+j- -:- - :nJ"If'i"i""j-"'~(/~~~li:""i1-' ::6,.;"'l"~-;-!;;~'!o,-,i - t -;-j ::6. ;II'111i1!,,-;,-r,,;oII'j~t);lF'I'i11III' ::6'~"'~""!",I!;'i1\~MJJ":'"'!""~:6
-100 -75 -50 -25 '0 25 50 75 100 -100 -75 -50 -25 0 25 50 75 100 -100 -75 -50 -25 0 25 50 75 100 -100 -75 -50 -25 0 25 50 75 100 -100 -75 -50 -25 0 25 50 75 100
490 --- 1 - I J - - r -- 1--- 490';- J - 1 - 1 - - I -, ,-- 490 '-, ] - - ] J - 490' -[ -I I' -- - 490' - -_,1_ i _ ,= : I 490
485 ~__I- ___ --'--,485'2- _,__ --1-'485 '_1_-____1]_ 485"--- __~_L 485 ~ --'--- U,_ 485
480 e---, - ----,- -1 -..:."-;,),0 480'~----j - - ~ - j- ---i -1-' 480 - l- ---'--J-<- ---j --I' 480 --j--i -_1-- " --1-__-_ 480 C - -, ~L- 'J'-"I 480
475 ~- _1 _ -_ -'- --' _ -- _r~~ - 475'k --'- - -- ~,-, - -- _1. - - 475.. - -'- ~ - -- -=:::: -, 475 c-- - -- --- ~ - - 475 - - - '- - -- -- --- ,- - 475
470 '=~~ ~! I CO'fACT~ 470'~--S - i j i 1 ]- 470 ~ -I--! I -I 1 --. 470,= -1 -1- -t -!--t-~I- 470 - - -, l-j- 1-1- 470
~~6 ~- '( --,'~ ~ -- .-----,- m:r --1 ~- ----- n~T:: ~~6~~1~--=- m ~i-lIl ~ -\- m?----=--r~ . m
455 =-J-'-'- - -1-.455';'--l'--~T-- 'j--r--I--'455-'--"--r -, 455_,'-'-[ J'I-' '-I-'455c--I-I-rl-"--'-, 455
450 " - J I - 450' ; -- - j -- -- - - 450 L' - I. --j -J - -I 450" J - - , ,- -; - - 450 ~ -' . - ---" ' I 450
~~6 ,-,-,,-! ,,-'-'-:'-i1 ,j., ~Q'~IM ";, ill :-,-,-, m )-i, '!"i'!'-;' ill, "\WUJ ,'7!, ill!, m ~ '-'-'-1;0; 'I" ,,\t;'J~W' I!, ill !-- ::6 ~,-, Iji '-'-'-I',-;,~ II "ImJJ ":, 0;- -- ::6~: IIi1I;o; iF,'I'\'lJtiltF,r. -1-' ~~6
-100 -15 -50 -25 0 25 50 75 100 -100 -75 -50 -25 0 25 50 75 100 -100 -15 -50 -25 0 25 50 75 100 -100 -75 -50 -25 0 25 50 75 100 -100 -75 -50 -25 0 25 50 75 100
490 ~ -, - 'I - -J [490 -r ,- -, - , -- - - ,- - ,n- 490 t ~ - -- I 'I - -- 1 '] - - ' 490 -- I -, - - - 1- - - - 490 -,- - - l -I -- [ -- -- - 490
485 --1------- - -~- 485 ,,--toMMOfl- -- _.1_1---_"_1_, 485 - ..l--- ----. -- ---- 485 ____-I__J ----~,-I---, 485 ----1-- ----'- ,--, 1--, 485
em _::J:::_--=1.=:J- :_=.-t- mJ ::~'::'":.N:::--_;=t-::1=C, m_::t==:t=1_.:::! :::t:_--= m~:1=I-~ ---=C.J=I= m~---=---=I=r.=1=::::'::l-=-I=-m
470 ---1-1---+ -i--I--rc.c::--:b- 470f"C+-~-l1 t--~-!- 470---+-- --I--i-I--,.--- 470 -+-i-1 ---1-----i--1- 470_u~-I-+-1-1---t--r- 470
465 --",I-~- -- 465 ,,_~-.;::-__n_ - 1 ,-- 465 --=~~-- 465=~-I-'-"----'-=== 465,;-,-~I-- 465
460--1--1-".-----1 ,,-- -f- 460 =--+-,- ---1- 460., +- ---..--- --! -- - 460 ~,~~-I-- 460 ----I-~----, -1- 460
455--, --', -[--- ---[-- 455 C"'I-- -r-- -r:::::r-[- 455 ~'I-'-'r---,-L- -- ,- 455-:r--'-- ---,---,--, 455 ~----I-'-I--'-C- 455
450 _--! __ --!--..1- ,--. -- - 450 '- -I-_~ -1- -- ,--- 450' -1-- -I--I_,..J __i_ 450 ~ - ---I J ~-,--~-I-, 450 c__L___-I-~_l____l__- 450
ml'':' .-,-,-!;o; ;;-" ~VnJJ ,-.-:' -1-' ::6, t,lii ,-,-,-~ ," ,t;, ,,\'1 ;tUJ "t, ill !II,_ ::6,: "'i' tlliili tll'"~'mJJ ,If, ill :,-;, _ m. :}',;1; ,-,-,-1 ",,!I, "\ -+ ,-1- ::6 ;0,'-:, ,-,-,-~ ,!I, "\'l~W;; -c-t -1- ~~6
-100 -75 -50 -25 0 25 50 75 100 -100 -75 -50 -25 0 25 50 75 100 -100 -75 -50 -25 0 25 50 75 100 -100 -75 -50 -25 0 25 50 75 100 -100 -75 -50 -25 0 25 50 75 100
490 --I-.'-r-- --- -- 490-[ ,- - '[ - _,u__ -'" 490--- '-'--T---' 'T- 490'_ I:-- - - - -1---'-- 490 ---I-'-'-'---r-I-' 490
485 - _ __ ,---1 __ -_ -- 485 ,~--'-- _ -- + l- L - 1-,- 485 c -J - - --1 -- 485 ~ -I J - - ,- - -- 1_, 485 -- ~ - - -L -I - I--- -- - - 485
480 - -t- -,- l -1-' -'-1-- 480 j-- I' -- j -J. --- t- -+ -1-- - 480-"-. 'I -,-., -:J. - t - -- - 480 --:1 -I -- - ---, ~ r --1-' 480- -~- -1- -j ---I - j- -r -1- - 480
475 -~'---' ~----.-- 475,' -- ,--~-L~-'475_ __-L, - --"--'- 475 - ---~---~---475 _____L_..J_L.--"-__, 475
410-+--+ -:i- ----.-\:=: 410r~.:--- -, --1-1--,--'-- 470 ';.-+-,-+--i-1---+--'- 470-+--1--+-'--'-1---+-'--1- 470 -~-I-+-j-t---+-I-- 470
:~6 - --1- = --. +- -i-::- --- ~-= f--- :~6 }-- -I- ::::7"" '~-.' ,- - - f-:- ' :~6 ~: =+ -I~ :':":'1::': :~6 0 =1 - -- .a- - -- :::::: ~-=- :~6 -- - =1-, . ,- --~ =-:= m
455---,' ---T ,- ----, -1--' 455 ,,-T-- -,--- 1 -'__-'-1-' 455 -I-I-'---'-['- -r -c 455 -I-I------'----,---- 455 -- -I-~~-,__--T -,-- 455
450 -- --'-- -1- __ -I _ _ _ ---L _ _ 450, __ -+ -1-- -+-- _. __ 1--- -' - - 450 =-- - - -I- -I - - -'- -- -' 450;- -, - ~ ~ - L - -1- 450 - ~ -- - -l- ___J - l- -~ - 1- - 450
B m - --;- -1- -j-;- ~(JT@ ,-;T, iii !II, m :l,~,,-,-,-!;o; ,l;, "\'I1~/]J ,It,;o; I", , ~:6. "lllT,,-,-,-IIIIIt'.;o1 -+ - -:i -1- ~:6, i'),;T, '-'-'-!.1.1llI'-'",'jJ;W ,-;1',;0; !-,-,-, m- - -1- -+JJ ,111;0; !II', ~~6
-100 -75 -50 -25 0 25 50 75 100 -100 -75 -50 -25 0 25 50 75 100 -100 -75 -50 -25 0 25 50 75 100 -100 -75 -50 -25 0 25 50 75 100 -100 -75 -50 -25 0 25 50 75 100
490 '-:::r-I-I---'- '-:=;_=,1.=, 490-';-'---l'~'--'-C' 490 --:r-I-r::-' -[ -r-I-- 490 --'-l--J -~-: 1-1- 490 -- -I'-r-J-'---'--I-' 490
485 - - - - - - --1 ___ 485 ,+-- --I- - - -j - "- --J - --, 485 - - - --1 -- ..j -- --' 485 -- --I- - -- - - - ~ - - - 485 ' ~ - - --' - 1--- --'- -- -- - 485
480 --j--I--'1 -j- 1---'--1- 480r::t-:-1::~i-t:::'-I-- 480 --t-I-:t:j-j----<---,-, 480 --::t-I-- -1-t::i-'\-' 480 ------1-+--1-;----.-\-- 480
475 _..L _ _ _ __ n , __ ___ ,_ 415 ~_ _ __ - --1 _ _ _ _' 475 ,,- - - - - L_..1 --- - 475 - -- _.1_ - - - - - - 475 - -- - - -L ---1 - - --- -, ,-, 475
m -+-=I=+u-t=-~---1 f- ~~L=.-T~t-.!_J=' m :..+ 1.:.:..:.t--1=t--t=I~- m __+:I-+---j-t--i-'= m ---I--t----t-t-----;=I:::::: m
m:::--+-=I=-=f'.:\'--=--J'=-+=I= m:+=I=-r- _, :..J-=f---: m :+=I~=I=, m:' =1= _a_ -~=I=- ~~g - --,::::::::1:::::: -_ :::::=~--: m
450 -:::[_1_]:::---+_ j----i.-I-- 450 ~-I-I-~---J-~::r -1- 450-:r-[-J::---1-r:.::r--I- 450-::r--!_1---1-C~-I- 450 _I-[-J:::::]-C---L-I- 450
445 - -;I: -1- -'- ill -- - -+ -1- 445 c- -+- -1- +-,-,i - 445 -- ~ - - -+- --j - JJ1-:T - 445 -- -:T: -1- -j-;- ~ -I 445 - -+- -1- +-:-:i -- to; -:T -1-' 445
440 11"/III:I',ld~~b'II~IIII. 440,'111;1111:1111;1111' + 440 111:IIIIYri!u'J11: 440 ';1111,111- 440 ' .1111;lllliW!lIJII:IIII:,111 440
-100 -75 -50 -25 0 25 50 75 100 -100 -75 -50 -25 0 25 50 75 100 -100 -75 -50 -25 0 25 50 75 100 -100 --75 -50 -25 0 50 75 100 -100 -75 -50 -25 0 25 50 75 100
A
GRADING CROSS SECTIONS
STA 106+00 TO 130+00
Q
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5.
"
.
VERT -
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HOR -----
SCALE IN FEET
,.
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12V:1H EXI
I D....TE NolO TIME" PI OHm- 1/1~'28rt 11.ll!I'~1 AM
I BY USERH-""'El "REV. Pfl J CE {lINT I TlEO WOAl(SPACE I
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Figure 9C Typi, ~-l Cross Sections
CD STA 138-+00 TO 139+00
(3) STA 139...00 TO 143+00
CD STA '''2+00 TO 143+00
o STA 138+00 TO '42+00
o
490 ~,~- --!-- -- -,
480 . '--- ~- ~i- -- -. - -,-
p
490 -,- - - - I - - 'I -- - -r - - -- - - - 1~- -- 490
480 ''----C!)1---0~1t,- -0)---0,- -,- 480
470 ~-- --~" ,_15' - --t~~~' - - -- 470
: I lL..:::' ~t ~1 J .
460 ,'--. ---- --1----1_ "'._-'LT-l-..l ,- ,,---', 460
:. 2 EG (TYP):
450 ;" , , I , , , " , ,I FG (TYP), , , ! , . . .:. 450
-75 -50 -25 0 -25 -75
l -
-t ---
470 .c__~~__-+___
460 '~=-1_12O'_ -r - - - "l::.- - ~ 460
: I~ I EG(TYP):
450 .' , , , , , ' . . Ff3 (1)1') . ' 450
-75 -50 -25 0 -25
TYPICAL SECTION (NTSI rIE'\
STA 144+<J0 TO 155+00 ~
TYPICAL SECTION (NTSI
STA 138+<J0 TO 143+<J0
-50
Q0
c
490 -, - ,,- - --, 1- -- - -- - - - - - -- -- - r- - - - - -- -', -- - - - - -,- - - -- - - .
480 '~ -- -- - -- -1- -- - -- - ',- - - - - ~lr- ~ - ~-- 30'80;;;- -~' - - _L- - ./-
470 ,,---, - -- - -- -I - ---- T - _-J'~,g~~ ~:'~ _ 51DE~~I+ _ -- -- + -~-:::: n__
,::.. -----1-.- __'~-=-___-l" _h, -"''-' ...~~
460 ~ -- --lL''';2 t", ~ 3 -- _...J -T- - - FG (TYP) -'- - EG (TYP) -- .
i , . 1
450
-150
o
50
~
100
450
150
-100
-50
TYPICAL SECTION (NTSI
STA 131+00 TO 138+<J0
490
Figure 9A, Grading Cross-Section
......... -I--~---- --', - -- ~--r----'- -------- --I
B
480 . '- --- - --;z-~"'=.:'ow"'=~~- -- - - t- -- - - -- ---I -- - - - -- -- 'I --- - - -:' 480
470 ,'-.,. -" -- - - - - ' -- _~~~_~\'J"'_~EW__SH~ _"-1 TQ...~_ t---- -- -_ - - --i ---- -Jl%~~tl 'L.M=-~l- , '- -:, 470
~" ,- I __" ~L i' ~:
::~ ','- --~~------------I-~FG'(TYP) -,'~~~~1' T 'r --:' ::~
-250 -200 -150 -100 0 50
TYPICAL SECTION (NTSI
STA It9+<J0 TO 131+<J0
, -50
~
490 " - -- - GRADE --:;t, SMQOTl< SlOPE- -- --, - -- -- -- -1- -- - -,- - - ~ - - - -, -T - - - - -:f 490
480 . '-::-:!. ~'N EXIST "'!!'! FOll"""'~EWATER'NG - ~ '=="-- - - - L- - ---- - -- -1' - - - - -- + - - - - - --:, 480
. I I I ,
: , SM'N ---' 12* ; l- :
470 -:- -- - - - --j -"'--~ - -- + - - .-J'S'BOTHd.- ~ ,-'- -, - -=-- -~ -:--~ - - - - -- -~~, 470
: _ ,-',SIDES t- 1,1-"'1 I:
460.;- -- -.-.- ~ ----1-- - - _..L -~ 1 " ~:";'f~' ~ -- - - - -EG-ctYPr -- n - --,' 460
: I I 3 ~'(!) " T 3 tG (TYP) i :
450 ,'1- 450
-150 -100 -50 0 50 100 150
A
TYPICAL SECTION (NTSI G)
STA 108+00 TO 119+00
Q
I DATE AND rl.l( PlOTTED' III'5/zeect lIo1l.41'AM
IBY l.IS(RtUrM(, ICREY.PR1CE IUNTITLEO l/QRI(SPACEI
490
480
470
490
480
470
460
490
NOTES
" ,
=-~
SCALE I N FEET
5
PRE-SUBMITTAL REC'O
JUN 4 2009
CD ALL SECTIONS ARE LOOKING UPSTREAM
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JUN 4 2009
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. Sanitary sewer other
. Stormwater other
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L__J Phase II Restoration Area Footprint
~ l ~~~ :::: Tax Lot PRE-SUBMITTAL REC 0
JUN 4 2009
N
A
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400
800
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Data source: City of Springfield 5/6/2009
ATTACHMENT C
REDUCED SITE PLAN 8.5" x 11"
FOR SPRINGFIELD MILL RACE RESTORATION PROJECT - PHASE II
PRE.SUBMITIAL RECIO
JUN 4 Z009
Figure 5. Mill Pond R...,,"
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Site Plan
Legend Data Source: Tetra TedI, Inc.
Proposed Restoration Planting
....." Ash Forested Wetland
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ATTACHMENT D
HYDROLOGIC AND HYDRAULIC ~NAL YSIS
FOR SPRINGFIELD MILL RACE RESTORATION PROJECT - PHASE II
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PRE.SUBMITTAL REC'D
JUN 4 2009 ,
.04-"'\
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Springfield Mill Race Section 206 Project
Lane County, Oregon
Floodplain Documentation
April 7, 2009
Purpose
The U ,S, Army Corps of Engineers proposes to construct the Springfield Mill Race Section 206 project in
cooperation with the City of Springfield and the Willamalane Parks and Recreation District The
Springfield Mill Race Project provides a new inlet connection to the Mill Race approximateiy 1.500 feet
upstream of the existing connection to the Middle Fork Willameite River. The project also' includes
removal of the Mill Dam and regrading of the Mill Pond area, The activities proposed as part of the
Springfield Mill Race project include fill and removal of sand, gravel, and rock material, placement of
large woody debris. and installation ?f concrete blocks within FEMA Zone AE. The proposed activities
also include excavation of material and removal of an existing outfall within the FEMA Zone AE
Floodway, No fill or other encroachments are proposed within the Zone AE Floodway; the proposed
activities within the Zone AE Floodway do not result in an increase in floodway elevations, The activities
located within Zone AE are located in ineffective conveyance areas for the base flood and the
corresponding increase in base flood elevations modeled in HEC-RAS is less,than 0.01 feet in elevation
change, This document provides hydrologic and hydraulic data in support of the Floodplain Development
and Floodplain Fill and Removal permit applications submitted to Lane County in March 2009,
As a duly qualified engineer licensed to practice in the State of Oregon, I hereby certify ihat I have
performed a hydraulic analysis of pre- and peist-project conditions for the Springfield Mill Race Project,
with results and conclusions as referenced above and in the attached documentation,
,"'-
Krey H. Price. P.E.
Tetra Tech, Inc
EXPIRES DEe 31,2010 '
1020 SW Taylor St #530 Portland, OR 97205
(503) 223-5388 PRE.SUBMIITAL REC'O
JUN' 4 2009
Springfield Mill Race
Section 206 Project
Floodplain Analysis
Project Description
The Springfield Mill Race Section 206 Project is being conducted under Section 206 of the Water
Resources Development Act of 1986, by the Portland District Corps of Engineers (Corps) in
cooperation with the City of Springfield and the Willamalane Parks and Recreation District The project
site is located along the Springfield Mill Race, which is a dive,sion off, of the lowe, Middle Fork
Willamelle River near Clearwater Park at approximately River Mile (RM) 190,8, As shown in Figure I,
the Mill Race flows for approximately ),5 miles to the northwest and rejoins the main stem Willamelle
River at approximately RM 185 near downtown Springfield, Oregon, The Mill Race follows a
meandering northwesterly course through natural and agricultural lands, past rural residential, urban and
industrial areas and into a 30-acre Mill Pond about 3 miles downstream of its inlet A dam about 15 feet
high contains the Mill Pond, The proposed project will restore and enhance off-channel habitat along
approximately 3 miles of the Springfield Mill Race over an area of approximately 40 acres, The project
includes removing the Mill Dam and relocating the inlet approximately 1,500 feet upstream,
As shown in the Figure 2, the project comprises the following features:
~
.
Placement of three timber-pile supported large woody debris clumps, Two of the clumps are
located within FEMA Zone AE, All clumps are located outside the Zone AE Floodway,
Construction of a rock and bioengineered bank, The proposed revetment is located outside of
Zone AE,
.
.
Excavation of existing bank material to ~onstruct a new Mill Race inlet The toe of the
excavation footprint overlaps the Zone AE Floodway, 'The excavation area covers
approximately 1,250 square feet with a total excavation quantity of less than 100 cubic yards
from within the Zone AE Floodway.
Relocation of an existing 66-inch diameter storm drain pipe, The pipe outfall is located within
the Zone AE Floodway for approximately 5 lineal feet The remaining pipe is outside Zone AE,
The trench backfill will be to the existing grade or lower and will incorporate rock material. A
pump intake is to be located in the vicinity of the existing storm drain,
Reconstruction of the existing parking lot, construction of a culvert crossing, and construction
of a new parking lot These features are located outside of Zone AE,
Placement Of large woody debris, As shown in Typical Section I in Figure 3, approximately 40
pieces of large woody debris are to be placed along the stream banks of the Mill Race within
Zone AE.
.
.
.
.
Fill placement As shown in Typical Section 11 in Figure 3, fill is to be placed in the channel bed
and overbank to prevent fish stranding and contain flows along the new Mill Race inlet channel.
Approximately 3,750 cubic yards of material is to be placed within Zone AE, including sands,
gravels, and rock.
PRE-SUBMITTAL RECIO.
JUN 42009
2
April 2009
Springfield Mill Race
Section 206 Project
Floodplain Analysis
. Channel excavatian, As shawn in Typical Sectian III in Figure 3, the new Mill Race channel
includes vegetated flaadplain terraces, Approximately 13;600 cubic yards af material is ,to. be
excavated from within Zane AE,
. Flaw canstrictian structure, Three exisiing culverts are to. be ,emaved and replaced with a
cancrete black flaw canstrictian structure, The structure consists af 26 30"~0"x60" precast
cancrete blacks spanning appraximately 30 lineal feet an each bank, The structure is lacated
within Zane AE,
. Remaval af the Mill Dam, The dam is to. be remaved and the Mill Pand area'is to. be regraded
and revegetated, See the attached vicinity map, The Mill Dam and Mill Pand are lacated autside
af Zane AE,
. Riparian restaratian, Invasive species remaval and riparian and wetland plantings are prapased
alang the new inlet. See Figures I, 2, and 3,
Topography
The Carps af Engineers, Partland District canducted hydrolagic and hydraulic analyses far the praject
as parI of a 2003 feasibility report Tapagraphic'data far the HEC-RAS madeling were derived fram '
2000 cantaur mapping at 2-faat cantaur intervals pravided by the City af Springfield, Aerial
phatagraphy was callected in 2004, Suppleme,n1al points were callected using a level, handheld GPS,
andlatal statian in March and August. 2008, The data saurces 'were merged into. a'single 3D surface
using Bentley InRaads saftware, and the HEC-RAS madeling was updated to. reflect changes to. the
'propased design, All project features' are projected to. NAD83 Oregan State Plane, Sauth Zane, The
vertical datum far all project features is Narth American Vertical Datum (NA V088), Previaus madels,
including that utilized NAD27 and NGVD29 were canverted to. NA083 and NA V088 far use in the
project mapping, Unless atherwise nated, all elevatians in this repart are relative to. NA V088,
Bathymetry
Bathymetry in the Carps af Engineers madeling was based an hydrographic suryeys canducted in -
March and May af 2000, An updated bathymetric survey was canducted along the same sectian lines in
October 2007, Figures 8 and 9 shaw crass sectians cut at the existing and propased inlet lacatians in
2000 and 2007, The thalweg degraded several feet in both laca1ians aver the sev,el)-year time periad,
with same aggradatian an the left bank gravel bars, Figure 10 shaws the profile view, The prafile shaws
bed degradatian throughaut the entire reach, wi1h same depasitian further dawnstream, The mast
prominent features alang the thalweg prafile are an abandaned gravel pit lacated dawnstream af the
existing Mill Race inlet and a deep scaur hale lacated near the prapased inlet The gravel pit and scaur
hale have remained fairly stable aver time in terms af river statian. A smaller head' cut; hawever,
migrated upstream several hundred feet between 2000 and 2007, The migratian rate has been samewhat
episadic; in ane instance, it is reported to. have maved several hundred feet upstream ,in ane winter, with
relatively little migratian accurring in ather winters, If the average rate abserved ~ince 2000 were to.
@
3
PRc-3UBMITTAL RECIO
'JLi1~009 4 2009
Springfield Mill Race
Section 206 Project
Floodplain Analysis
continue, the head cut (which was located approximately 100 feet upstream of the existing inlet location
in 2007) would reach the downstream end of the deep scour hole (approximately 300 feet downstream
of the proposed inlet location) in approximately 20 years, The head cut migration will most likely halt
when it reaches this scour area; however, the overall reduction in the thalweg profile along with the
associated backwater conditions would result in a reduced water surface elevation at the proposed inlet
location in some flow conditions:
Flow Frequency
'.
Additional gage records were obtained to update the Corps of Engineers findings to current conditions,
A comparison of the previous findings to the entire period of record shows a slight difference in flow
recurrence (Figure 4), The exceedance curves are nearly identical for the two post-regulation periods of
record, The mean and median discharges are approximately 100 cfs lower for the extended period of
record, a difference of 3%, The project increases the frequency of lower flows in the Mill Race while
limiting flood flows to present levels for a,eas of the Mill Race within the project limits (Figure 5),
Flows in the Mill Race vary with flows in the Middle Fork WilIamette River. Some base flow enters the
Mill Race through storm drains and other surface drainage into the Mill Race; however, these base
flows are minimal relative to the flow rates driven by the Middle F o,k WilIamette River connection at
the Mill Race inlet. The monthly flow variation in the Middle Fork WilIamene River is shown in Figure
6, In summer months, flows in the Mill Race have generally been supplemented with pumping. The
flow exceedance curve is broken into winter and summer flow conditions for comparison in Figure 5,
The highest flow measured since 1999 was 21,000 cfs, approximately equal to the 10-year return period
runoff event determined for the 1999 Flood Insuranc,? Study, The peak discharges measured during the
additional period of record (1999-2008) correspond closely to the expected trends from the previously
determined peak flow distribution, Likewise, the distribution of runoff throughout the year has remained
similar, with snowmelt and reservoir releases appearing to affect the runoffhydrograph in the spring and
~~=~' ,
Roughness Coefficients
The 2003 Corps model and the 1999 FEMA model' apply roughness coefficients for the Middle Fork
Willamette River taken from a 1978 HEC-2 deck prepared by CH2MHill, Inc, Based on notes taken in
1999, Ken McGowan, the Floodplain Manager at the time, reported that the HEC-2 model was
calibrated, to measured w~ter surface elevations upstream and downstream of Clearwater Park, The
calibrated main channel roughness coefficients were approximately 0,02 to 0.03 in the vicinity of the
Mill Race Inlet: Subsequent HEC-RAS models prepared by the. Corps of Engineers in 2004 required
Mannings n values of 0.045 to 0.055 in the same reach of the Middle Fork to calibrate to recorded water
surface elevations, ,As shown in Figure 7, the roughness coefficient resulted in an increase in computed
water surface elevations in the vicinity of the Mill Race inlet. The water surface elevation in the inlet
area was surveyed on 3/12/08, 5/26/08, 8/29/08,11/21/08,12/27/08, and 2/9/08, A comparison of USGS
preliminary discharge data for the dates of survey confirms the rating curve for the model with the
calibrated n value,
~
4
PRE-SUBMITTAL RECIO
JUN 4 2009
April 2009
Springfield Mill Race
Section 206 Project
Floodplain Analysis
Existing Floodplain
The existing Mill Pond is not located within the mapped FEMA lIoodplain for the base lIood (see
Figure 16), The Middle Fork Willamette River lIoodplain,extends into the Mill Race approximately 800
feet to the South 2nd Street Bridge, Upstream of the Mill Pond, the mapped lIoodplain covers Jasper
Slough, Quarry Creek, Gorrie Creek, and the Mill Race upstream of the South 18th Street Bridge (See
Figure 17), The inlet area lIoodplain and lIoodway are shown in Figures 2 and 18,
, '
Inlet Configuration
Although the proposed inlet invert is at an elevation that connects to the Middle Fork Willamette River
nearly 100% of the time, during some time periods the shallow depth in the inlet would not provide
sufficient head for open channel flows in the Mill Race, Water depths would likely ne~d to reach 1 to 2
feet before sustained flows would be possible, Although pumping requirements would be reduced with
the proposed inlet configuration, during some low summer flows, a pump will still be required to
maintain year-round flows into the Mill Race, When the head cut reaches the scour hole, the water
surface elevation at the proposed inle1 location could potentially drop to the same frequency of
connection currently exhibited at Ihe existing inlet location; by that time the existing inlet location
would have become even further disconnected,
The need for dredging at the new inlet will be reduced compared to the existing inlet due to the location
of the new inlet within a degradational zone, Some aggradation could occur in the proposed inlet area
without affecting the design discharge in the Mill Race, Lowering the inlet further would not improve
the connection times because there is not enough elevation drop to the downstream Mill Race to provide
flows at a lower inlet invert elevation, To be effective, any further lowering of the inlet would have to
be accompanied by large-scale excavation of the Mill Race channel, which 'is not being considered at
the present time,
Jasper Slough
An additional design consideration is the effect of the project on water surface elevations at Jasper
Slough, Jasper Slough serves as an overflow, side channel for the Middle Fork Willamette in ,extreme
(-IOO-year) lIows, connecting to the Mill Race .approximately 1,300 feet upstream of the 28th Street
Bridge, Figure 20 shows a plan view, Although several storm drains and other local surface runoff
sources drain to Jasper Slough, the Slough is generally a backwater of,the Mill Race, As such, the water
surface elevation in the Mill Race at its confluence with Jasper Slough governs the Jasper Slough water
surface elevations for a half mile upstream of the conlluence. Supplemental hydrologic and hydraulic
analyses were conducted to evaluate the potential effects, of the lower Mill Race water surface elevation
on Jasper Slough,
Table 2 shows that the project effect on water surface elevations at the Jasper Slo~gh confluence are
very .similar to the effect at the Gorrie Creek culvert described below, Velocities are shown for the
~
5
N'E I\lInPITIAL I'II"I"'D
m -,jUUIVII in 1\1. \"
J U N 4 ttJ~g009
"
I
Springfield Mill Race
Section 206 Project
Floodplain Analysis
adjacent Mill Race channel; velocities within Jasper Slough are negligible under both existing and
project conditions, The maximum ,effect on the water surface elevations considering a wide range of
flows in the Mill Race is 0,9 feet The g,eatest effect occurs when flows are between 50 and 100 cfs in
the Mill Race channel, representing a typical winter condition. Above and below this flow rate, the
effect is dampened, The areal effect of the lowe,ed water surface elevation varies with the side slopes,
In zones with steep side slopes, the area affected by the lowered water surface elevation is minimal. In
areas with milder slopes, the effect is much greater. To evaluate the areal effect of the lowered water
surface, eight bathymetric cross sections were 1aken within Jasper Slough on November 15, 2008, The
cross sections show that in the vertical elevation zones affected by flows exhibiting the highest
difference in water surface elevations between existing and project conditions, the channel side slopes
vary from near vertical to approximately 2H: I V, The side slopes flatten to between 5H: I V and I OH: I V
both above and below this zone, Figure) I shows the effect schematically,
As shown in Figure 21, the top width of the Jasper Slough water surface is reduced by'a maximum of
approximately 4 feet The associated area affected by the project changes (inundated under existing
conditions and exposed during project conditions) along the approximately 2500 fool length of the
Jasper Slough backwater zone is a to1al of approximately 0,25 acres located along the, edge' of each
bank. With the dam removed, the channel slope in the Mill Pond area increases from essentially flat to
0.23%, Velocities increase accordingly from near zero under existing conditions to 2-5 fps with the dam
removed,
Comparison of Results
Figure IOshows a comparison of the modeled water surface profiles with 2000 and 2007 bathymetry,
The rating curves for the Middle Fork Willamette cross sections at the existing and proposed inlet
location are shown in Figure II, The cross sections are shown with selected water surface elevations in
Figures 12 and 13. In general, the Willamette River water, surface elevation at the proposed inlet
location is approximately 2 feet higher than at the existing inlet For higher flows (2-year event and
higher), there has been relatively little change in the rating curve at the proposed inlet location;
however, for lower' flows (below 80% exceedance discharge), the migrating head cut and channel
incision have contributed to a water surface approximately I foot lower in 2007 than in 2000. The trend
will most likely continue as the head cut continues to migrate upstream, The gravel deposition at the
boat r~p that has occurred over 1he past decade will likely begin to erode as the head cut continues
migrating upstream; however, the boat ramp is located in a depositional area shielded by a rock-
protected riverbank and will likely continue to experience episodic deposition of gravel and other
debris,
A key deSign cIit~rion at the proposed inlet is to avoid increasing flood flows in the Mill Race above
current levels, Unde~-'existing conditions, water surface elevations in the Middle Fork Willamette River
reach the existing inlet approximately 80% of the time; however, substantially higher water surface
elevations are required to actually maintain flows downstream into the Mill Race. The City currently
must provide pumping to maintain flows in the Mill Race during most of the summer. Median flows
result in depths of approximately I to 3 feet through the inlet channel with discharges on the order of
~
rR~ SU2Mm~.L RFr.'D
JUN <1 2009
April 2009
6
Springfield Mill Race
Section 206 Project
Floodplain Analysis
100 cfs, A gravel roadway with three existing 48-inch diameter CMP culverts becomes a controlling
feature during high winter flows that approacJl the top of the culverts with flows of 200-300 cfs. During
WilIamette River flood flows up to the 2-year event, the culverts are submerged, but the roadway is not
overtopped, During these events, the flows split just upstream of the culvert, and most of the flow is
diverted through a side channel (North Channel) to rejoin the main river. Culvert. velocities under
submerged conditjons approach 10 fps, In extreme flood events in the Middle Fork WilIamette River,
the maximum discharge through the three culverts can approach 400 cfs just prior to overtopping oLthe
roadway. The corresponding Middle Fork Willamette River flows are approximately 20,000 cfs, The
gravel roadway is not designed for overtopping and would likely wash out under this scenario,
Under proposed conditions, the Mill Dam will be removed and replaced with a composite channeL The
proposed design utilizes a composite channel with a 12-foot bottom width and high-flow terraces, The
dam removal and channel construction affect the water surface elevations and velocities in the Mill
Race upstream of the dam, The hydraulic effect of the dam removal extends several miles upstream
from the dam site but does not affect the inlet area, Figure 19 shows the velocity profiles for typical
winter flows in the Mill Race under existing conditions with the dam in place and under proposed
,
conditions with the dam removed, In low flows, the effect (lower water surface elevation and higher
velocities) 'disappears near Kinzley Road, approximately 2,5 miles upstream of the dam site, During
flows above the 2-year event, the effect disappears at the existing gage weir approximately 3 miles
. il
upstream ofthe dam,
Due to the relocation of the inlet, the recurrence frequency of a given flow will increase in most
conditions, The water surface elevation associated with a particular flow, however, will decrease due to
the elimination of backwater from the Mill Dam, Because the water surface elevation will be lower,
flow rates in diversions such as the Gorrie Creek culvert may be affected, To avoid an adverse impact to
the available flow, the Gorrie Creek culverts will be lowered, As shown in Table I, the maximum effect
in any given flow is a 0,9 foot reduction, The culverts will be lowered one foot to compensate for the
potential lowered water surface elevation, In conjunction with the culvert lowering, minor excavation
within, the Mill Race will be needed to form a pilot channel to the new culvert invert, Fish screens will
be needed outside the sluice gates, A customized configuration may be required to form a screened
channel entrance that attaches outside of the sluice gate, Periodic maintenance of the fish screen will be
required to remove accumulated debris,
Effects on Floodplain and Floodway
Cross sections adjacent to project features were modified in the HEC-RAS model of the Middle Fork
WilIamette River to simulate the potential effects on the regulatory floodplain and floodway, As a
conservative approach, only encroachmen1s and fill were modeled, while excavation and removal of fill
were ignored: The only encroachment in the proposed inlet area is the placement of I~rge woody debris,
The large woody debris placement is proposed outside the regulatory floodway; however, two pile-
supported large woody debris clumps are located 'within the 100-year floodplain" The proposed
placement location is in an area that under typical flow scenarios is separated from the main channel by
an island, As shown in Figure 23, Section 20976 was modified to simulate the addition of large woody
~
,_7
PD~.~IIRMITTAI D~r'n
- - - . -... .. .- - -- -
JUN 4 2009 April 2009
Springfield Mill Race
Section 206 Project
Floodplain Analysis
debris, As a conservative approach, the entire side chaimel.was converted to an ineffective flow area in
the HEC-RAS modeL This would reflect a case in which the large woody debris clumps snag additional
debris or cause some aggradation that would inhibit any effective flow in the side channeL The effect of
the change in the model is shown in Table 3, The resulting change in water surface elevation is
approximately 0,01 feet, and the resulting velocity increase is 0,03 feet per second, As shown in Figure
2,' the large woody debris placement is proposed outside of the floodway encroachments; therefo,e,
there is no effect on the regulatory floodway,
In the existing inlet area, some fill is proposed to prevent fish stranding along the channel thalweg and
to separate the existing channel from the proposed Mill Race inlet. No fill is proposed within the
regulatory floodway; however, some fill is proposed within the floodplain, As shown in Figure 24,
Section 18865 was modified to reflect the fill placement. As a conservative approach, a complete
blockage was inserted into the HEC-RAS cross section at this location at an elevation exceeding the
proposed fill elevation, Because the proposed fill is located in an area that, although wetted, provides
ineffective flow conveyance, the complete blockage causes only a reduction in top width and does not
result in any increase in base flood elevations or velocities, Likewise; the blockage is located outside of
the floodway encroachments and therefore has no effect on the regulatory floodway The tabulated
results are shown in Table 3. Figure 25 shows the profile view of the existing and proposed conditions
water surface elevation, As shown in the profile view, the two profiles plot direc11y on top of one
another, and the project effects on the regulatory floodplain and floodway are negligible, The electronic
HEC-RAS files, including flow, geometry, and plan details, accompany this summary report,
PRE-SUBMITTAL REC'O
JUN 4 2009
~
8
April 2009
Springfield Mill Race
Section 206 Project
Floodplain Analysis
FIGURES AND TABLES
/
~,,,,,,,ftW:<I~[CI
SI~llOr< 7U.1.ll
_1tIlLlIII,ttl
- . - -
=--
~
Figure I: Vicinity Map
PRE-SUBMITTAL RECIO
JUN 4 2009
~
9
April 2009
Springfield Mill Race
Section 206 Project
Floodplain Analysis
-~-~~'-::l
" ""y ..,,"
"-y>,r/ '!" -sc:~t II< rU:T ... C).
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"eQ2(.l5-:i:QO
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a
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~
Figu,e 2: Site Plan
~
10
April 2009
p
U
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~ Q
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c.n -,
,
LLI
~
Springfield Mill R?ce
Section 206 Project
Floodplain Analysis
510
W1<SVE 5ffQrs ~l.lOV""
A'oD rrr...'l!A.'i u-u'R'LA'ir.'\"GS
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410
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TyPICAL SECTION II
rN~ 5nOCS flEv.ovAl. Im~ SPtC!;s AtMOVAI.
1-- \'.m::~~~~~m1,m:~ aw< --1. 1-- WTi:;'va~~~'~~.~~ IlAl<< --1
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480 ~----~-----~--L-._~~-----~-____;
, I EXCAV...Tl5::(U.,!JXICY ~ lCINt: N:) 'I . I ,I I
470
-150, ~100 -50 0 50 100 150
TYPICAL SECTION III
Figure 3; Cross Sections
PRE-SUBMITTAL RECIO
JUN 4 2009
<
~
II
April 2009
Springfield Mill Race
Section 206 Project
Willamette River at Jasper Flow Exceedence
401
<:1
1C
0,
1,000
Oisc:harge(c:ls)
Figure 4: 2007 vs, 1999 Exceedance Curves
Willamette River at Jasper Flow Exceedence
100
'~'
90 ,i ,:
i
60 , Oi~rge~equlredlor '
0 Dlschar;I!Requl~dlor
a lnllialConnedionat Initial Connec:tlon al
. 70 _PropoSBdlnlelLoc:ation EJQsling Inlet Loc:ation
~ (~500 ds, 100% (-1800 cfs, 80%
0
. i!lICeedenc:e) eKCeedence)
;;
a
c 60
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0
0
.
. 50
.
0
=
~
.. 40
~
c
.
.
E
'0 30
"
20
10
0,
100 1,000
Disc:harge(c:fs)
Figure 5: Summer vs. Winter Exceedance Curves
, I
, '
,
Floodplain Analysis
1-1967019991.
-1967-20071.
10,000
i I I
"
I -Winter (October-March)
I -Total Regulated Record (1967.2007) I
-Summer (April-September)
'!
~
12
I
J' ,
11\!
; :
':",I~I.:
i i I
10,000
i.
I)
I
100,000
PRE.SUBMITTAl REC'O
JUN 4 Z009
April 2009
Springfield Mill Race
Section 206 Project,
Middle Fork Willamette River at Jasper, Monthly and Annual Averages
7000
6000 ,
5000
E 4000
"-
.
!i'
~
u
. 3000
C
2000
1000
0,
,
c
-'i
i_____Monlhly Median I
1- AnnualMedian
!- WlnlerMedian
1- ~ * Summer Median I
----------
^
---~- -~--/-
2
,3
4
"
<
s
6 7
6
n
.
~
.
~
~ Month ~
,
<
!1
Figure 6: Monthly Flow Distribution
Rough~ess Coefficient Sensitivity
490 I
485
Existing \
Inlet
~-
480
~
..~ ~
~/'
/
,..-><-
0475
>
<
z
~ 470
~
>
'.
W 465
("
~.
------
~-
-'
460
-+- High Flow, High n I
~ High Flow, low n I
-- Low Flow, High n
--low Flow, lown
-Thalweg ,
455
450
16000
16500
17000
17500
18000
18500
-
Station (ft above confluence)
~
Figure 7: Effect of Roughness Coefficient on Water Surface
~
13
Floodplain Analysis
9
10
.
'"
"
o
,~-
... - "" ~.
~
"~
19000
19500
11
o
Z
Proposed
Inlet
r
11
I
I
20000
/'
12
.
o
PRE.5UBMIITAL RECIO
JUN 4 2009
April 2009
Springfield Mill Race
Section 206 Project
4"
49r
485
;;
~ 480
z
!O
c
"
~ 475
.
W
470
460
460
1500
Floodplain Analysis
Middle Fork Willamette River at Proposed Inlet (looking downstream)
I- ~ - 2000 Bathymetry I
-2007 Bathymelty
--J
.- -
.:....
I
.1
:/
/J
"J
V
"'~
1600
1900
2000
2100
1700
1600
Statlon{ft)
Figure 8: Cross Section at Proposed Inlet Location, 2000 vs, 2007
485
463
481
C 479
>
"
z
"
~477
0
~
.
>
.
W 475
473
471
469
200 400
Middle Fork WilIamette River at Existing Inlet Location (looking downstream)
/
, /-
...---- ~
1- . . 2000 Bathymetry I
-2007 Bathymelty
q
600
1000
1400
1800
2000
600
1200
1600
Station (ft)
Figure 9: Cross Section at Existing Inlet Location, 2000 VS. 2007
PRE-SUBMITIAl REC'O
JUN 4 2009
~
14
April 2009
Springfield Mill Race
Section 206 Project
490
48S
480
C 475
>
~
Z
;;. 470
c
,.
"
>
.
" 460
Willamette River Thalweg Profile
-~-------~
- I,
\ I
~~
~
"BO~ExceedenCe _______ ./ ~
Discharge ~- f'--. /350ft / 10~ft
j;
Top of Bank
-----
, ---
--
~'
..:..year
Discharn
----- '\ '\.
Former
Gravel
Mine
17500
Existing
lnlel
Location
---
--
---
Floodplain Analysis
,..... <o,f'roposed' !
- \ Inlet I J
.....,..,\!lCatio-"l==j
\ I !
\ I I'
, I ,
l
''':::
~
,
490
455 -
-Water Surface Elevation, 2000 Bathymetry
-Water Surface Elevation, 2007 Bathymetry
-Thalweg, 2000 Bathymetry
- Thalweg, 2007 Balhymetry
Migraling Head Cut
18000
18500
"000
<;,,.n,,,
"SOD
20000
4SO
16000
16500
17000
Station (ft llbove confluence)
Figure 10: Middle Fork Willamette River Thalweg and Water Surface Profile, 2000 vs, 2007
c
>
~
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~
"; 480
"
"
>
.
"
.
u
~ 475
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~
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Middle Fork Willamette River Computed Rating Curves
485
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Top of Bank Elevation at Clearwater
I_Proposed Inlet I
-- Existing Inlet
.
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5,000
10,000
':
,so
15,000 20,000
Discharge (cfsl
25,000
Figure II: Existing and Proposed I nlet Location Rating Curves
@
15
. .
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. .
~ 1>
u
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0 0
~ .
.
~
75 100
30,000 35,000
PRE-SUBMITTAL REC'O
,II IN 42009
April 2009
Springfield Mill Race
Section 206 Project
Floodplain Analysis
495
Middle Fork Willamette River at Proposed Inlet (looking downstream)
490
485
'C'.~a'" Pari< J
I
2-year discharge I
'V
80% ,,:ad,"" I
~ d;'~~a /umuuu.muu..l
\ I
\J
0'
>
cl 480
z
!'-
c
o
~
~ 475
.
iU
470
465
460
1500
1600
Proposed Inlet
Thalweg
u
1700
2000
2100
1800
Station (ftl
1900
Figure 12: Water Surface Elevations for Cross Section at Proposed Inlet Location
485
Middle Fork Willamette River at Existing Inlet Location (looking downstream)
483
481
~ ;:;
I
I
I
I
80'. """"",.1 I
~2,'mm'mu"u"mm'uu.J
-;:- Ii"" E>d";ng N,"" Cham,' aod M;~a" lo.t Th.1weg I
~ I
I
~
;-
---~
a 47(
;;
z
"
-;;477
o
~
~
.
jjj 475
473
471
469
200
400
600
800
1000 1200
Station (ft)
1600
2000
1400
1800
Figure 13: Water Surface Elevations for Cross Section at Existing Inlet Location
PRE-SUBMITTAL REC'O
JUN 4 2009
~
16
April 2009.
Springfield Mill Race
Section 206 Project
Floodplain Analysis
MDRacefvR-1
Legend
1
I
1
,
4901
. WS 400cfs
WS 200 cfs
WS 100cfs
WS 50 cfs
Ground
Left levee
485.
g
E
~
w
100~yearWSEl
-- f-nn
I
I
----
5% Exceedance
480
Typical Winter WSEl
475-
23250
23300
23350
23400
23450
23500
23550
Main Channel Distance (f1)
Figure 14: Water Surface Profiles through Proposed Clearwater Lane Culvert
: ,.08 .032 .08 --I '
4921
490
488
486
g 484
0
,0
1i
. 482
W
480
478
476
474
0 20 40 60
Station (ft)
Legend -
WS 400 cfs
WS 200 cfs
WS 100cfs
WS50cfs
Ground
,
BankSta
60
100
Figure 15: Cross Sectional View of Clearwater Lane Culvert
PRE-SUBMITTAL RECIO
JUN 4 2009
~
17
April 2009
Springfield Mill Race
Section 206 Project
Floodplain Analysis
-1;0,-_' \
,T \
~\
'~~1
./' 7....-
, I"
:::-'-<~f I
I} I 'I I f{Jf)?'
~l i-t. :~:I- ~:;:::'::J~'''::,.,
:1" I J I -'~_ I J.....""''''''''''''''''1
I~I -U L~- ,,--,,~IFIRM
."..... :~ .,.~:::.=- '" ... ,....w. ..~. ~ na~o I"S~'JJlC( RAIr N.II
'~y~~'-'~__ 1 --,--~ L.U.>:com;n
~. ~. OItlX,l'N AND
I ... I~ClJJtl'{)H."'IW ^R&.>.S
I " ,,_ ; <, ..'";:':.::.".;~ :f..",,,,.,,,, :
~-' '; ,"" --=1'--""""--'
. , <':~~~....", ~
t I-r ---. ",. "-, " ~ :;;.-;.~
\ ~ -:,1", ~ .~~.~-:~
----~-- U:I~~~~~~-;n'AIlEA$-" - .-.---11 / .::.=-:;..;:;.~;,-,;;.-;;;.=;;;:;=..,;;-..;;..
'\ mm ' I <..,SFZ':;..:.:~~..::-::~
",,,,,,,,.
~Uf;
Figure 16: FEMA Flood Insurance Rate Map for Mill Pond Area
I
~~':-"""''''-
,,*-..:u~~,
-,
=::::::::::"-=~----'~'--:-:-"~~"'-~-""="=:"_7 -
Return Interval
1 O-year
50-year
100-year
500-year
II
I
Discharge (cfs)
20,000
25,100
35,500
81.000
.r: :~, Wl:Illl.n=ImllIttPlllZU
t-,,! '
~ ~ FIRM
fUlCO IIWlWItt RATE HAP
. 1.",\'-:1"; OOUNl'Y.
OREGON A~D
11\OORPQRATEll ARt:A8
"
-.J-
nsnt:ll.-1SIli
---.,--..-.....-
.-.
-
""""
~....
_1tiU~M'"',
lWlrolOlI
....,."
atttmEBm:
W2,lIn
-
_____n______ ___
--..-......... --_..--
._-----_.--~-
...- ....--------
-~----~-_._-- -=
Figure 17: FEMA Flood Insurance Rate Map: Mill Race, Quarry Creek, Gorrie Creek, Jasper Slough
PRE-SUBMITTAl REC'D
JUN 4 2009
~
18
April 2009
Springfield Mill Race
Section 206 Project
Floodplain Analysis
/
MiDDLE FORK ,
1'/l.L~MT;;TTE RlV,;R!
, ,
fqlv1194
Return Interval
10-year
50-year
100-year
500-year
Discharge (cfs)
20,000
25,100
35,500
81,000
Figure 18: FEMA FIS Flood Delineations and Discharges for Inlet Area
Mill Race MR-1
~
\
'V \
l'
Figure 19: With- and Without-Project Mill Race Velocity Profiles for Typical Winte, Flows
, PRE-SUBMITTAL REC'O
4 2009 .
,
~
"
3,
,~
l-
ie
I~
',"
>
o
~
Existing
Dam
Pond I
Entrance
,I
F Sl. I
II i'
Bridge I I
I I
, I
\ I
,I I I,
i
28'h Sl. \ I I
/\ Bridge ~ Ii \
I i
\ .' ~\ i I ~
" \
/ .'
\ i
l- J/ \ I I \u~
\; l "
" , !
I II
.\~ ' .. ~
" ' , ,
. .-..
' ,
, ,
.> , ' I
" " ~ -, -- - - -
, ,
10000 15000 20000
Ex~sti~~ _ _ "
5000
Main Channel Distance (ft)
19
JUN
April 2009
Springfield Mill Race
Seclion 206 Project
Floodplain Analysis
Figure 20: Jasper Slough
-I Existing ground
- 4-- max2' top width
reduction (each side)
Figure 21: Jasper Slough Schematic Section
PRE-SUBMITTAL REC'O
JUN 4 2009
~
20
April 2009
Springfield Mill Race
Section 206 Project
Floodplain Analysis
Sprirgfiek:l Aoodplain
Plan: 1) Existing 4/6/2009 2) Ptop;:lsed 4Ai/2009
4901
48:
480
g 475
c
0
~
W 470
465
460
Legend
~
--.----------
WS Minimum Row - Exisling
WS Mriimum Row- Proposed
Ground
Ground
Existing and
proposed water
surface profile
Existing thalweg
at proposed inlet
Station 18865
Existing thalweg at
proposed inlet
Station 20976
'17500
18000
16500
19000
M:linChanneIDistaflce(f\)
"500
20000
20500
Figure 22: Middle Fork Willamette Water Surface Profile, Existing vs, Proposed Conditions
Sprirgfiekt Roodplain
Plan: 1) Existing
2) Prq>osed
49S-
48S
~
.~
Legend
WS Mnmum Row- Propose<)
WS Mnimum Row - Exislhg
II.......~""-'<;\,'\'\';,=:M.~'>.'\'>.~'\'\"<;:~...
. Proposed
Q-ound- ,Proposed
heff-pjoposed
.
8ankSta-Proposed
Grourw:l-Eldsting
!neff-Existing
BankSta-EJdstilg
090
g
.
~
.
w
480
47S
Ineffective flow
conveyance added for
L WD placement
'70
o
silo
1000
,500
2000
2500
3000
3S00
Stalion(f\)
Figure 23: Proposed Inlet Area Cross Section, Existing vs, Proposed Conditions (Station 20976)
PRE.SUBMITTAl REC'D
JUN 4 2009
~
21
Aptil 2009
Springfield Mill Race
Section 206 Project
495...
g
c
,2
~
W
-\
485 \
480 W
47S
'70
4::
o
Sprirgf.iekj Roodplain
Plan: 1) Existing
2) Proposed
Floodplain Analysis
~
Legend
WS Mnmum Row - Proposec
WS Mnmum Row - Exismg
~~.::~....,~,,~~~..~'''"..-.
. Proposed
- Proposed.
Ground - 'proposed
heff_Proposed
.
BankSta_Proposed
,-1f"
-Existing
Ground-Existing
,
heff - Emling
.
BankSla-Eldsting
Blockage for proposed
fill placement
Hioo
3000
4000
5000
StatOn{ft)
.'igure 24: Existing Inlet Area Cross Section, Existing vs, Proposed Conditions (Station 18865)
~.
2000
/
22
PRE-5UBMIITAL REC'O
JUN 4 2009
April 2009
Springfield Mill Race Floodplain Analysis
Section 206 Project
Table 1: Mill Race Hydraulics under Existing and Proposed Conditions at Gorrie Creek
I Discharoe Max Energy Flow Top I
Model Depth Slope Velocity Area Width
I (cfs) (ft) (ft/It) (ft/s) (sq ft) (ft) I
I
I 5 2,72 0,000000 0,0 112 ' 47 I
1 20 3,37 0,000002 '0,1 143 491
U> I 50 4.24 0,000006 0,3 186 511
c I 100 5,00 0,000014 0.4 226 541
0
"" I 200 ' 5,85 0,000033 0,7 273 561
'6
c I 300 6,57 0,000048 1,0 314 591
0
u I 400 7,19 0,000059 1,1 355 72[
0>
C I 500 7,73 0,000069 1,3 397 108 I
~
'x 1 750 8,91 0,000087 1,6 525 ',1101
w
I 950 9,70 0,000098 1,9 613 1111
I 1200 10,63 0,000108 2,1 717 ::1171
I 1500 11,63 0,000116 2,3 851 ,1491
1
1 5 2.28 0,000001 0,1 91 I 451
1 20 2,73 0,000005 0,2 112 47 I
1 50 3,34 0,000015 0.4 141 I 491
U> I 4,09 0,000029 I 0.6 178 I 51 1
c 100
0
:E I 2001 5.20 1 0,000050 1 0,8 237 I, 541
'0
c 3001 6,07 I 0,000065 I 1,1 285 I 57 I
0
u I 4001 6,82 I 0,000077 1 1,2 329 I 63 I
13
Q) I 5001 7.47 I 0,000087 I 1.4 3761 76 I
.e I 7501 8,75 I 0,000103 I 1,6 508 I 110 I
[L
1 950 I 9,58 I 0,000114 I 1,8 5981 1111
1 1200 I 10,52 I 0,000126 I ' 2,0 I 7051 "115 1
I 1500 11,55 I 0,000130 I 2,2 I 839 I ' 149 I
I
1 -0.44 0,00 0,01 -20,51 I -1,37
1 -0.64 0,00 0,04 -30,80 ,-1,98
I -0,90 0,00 0.08 -45,16 I ,2,78
I -0,91 0,00 0.12 -47.72 I ,2,85
c 1 -0,65 0.00 0,11 -36.53 I ,2,15
0
U>
'C 1 -0,50 I 0,00 0,09 -29,15 I -1,79
11l
a. 1 -0.371 0,00 0.07 -25.20 1 ~9,27
E
0 I -0.26 I 0.00 0,04 -21,61 I -31,76
u
-0,16 I 0,001 -0,01 I -16,98 I -0.27
1 -0,12 I 0,00 I -0,031 -14,38 I '-0,23
1 -0,11 I 0,00 I -0,071 -12.49 I -2,37
I -0,08 I 0.00 I -0,12 I -11.49 I 0,00
PRE.SUBMITTAL REC'O
JUN 4 2009
~ 23 April 2009
Springfield Mill Race
Section 206 Project
Floodplain Analysis
Table 2: Jasper Slough Confluence Hydraulics under Existing and Proposed Conditions
I Discharge Max Energy Velocil}! Flow Top
Model Depth Slope Area Width
1 (cfs) (ft) (ft/fl) (ft/s) (sg ft) (ft)
.1 5 2,47 0,000000 0,0 152 99
1 20 3,12 0,000001 0,1 218 103
I 50 4,00 0,000003 0.2 311 109
<n 1
c: 100 4.77 0,000006 0,3 396 113
0
"" I 200 5,65 0,000011 0,4 498 119
'0
c: I 300 6,38 0,000014 0,5 588 124
0
() 1 400 7.02 0,000017 0,6 668 129
OJ
c: 1 500 7,59 0,000020 0,7 742 136
~
'x I 750 8,80 0,000024 0,9 946 188
w I
950 9,62 0,000027 1,0 1102 191
1 1200 10,57 0,000029 1,1 1284 194
1 1500 11,59 0,000031 1.2 1484 199
5 2,03 0,000001 0,1 109 961
20 2,48 0,000005 0,1 153 991
50 3,10 0,000009 0,2 216 1031
<n 100 3,87 0,3 297 1081
c: 0.000014
0 115 I
:e 200 5,01 0,000018 0,5 423
u --..-
c: 300 5,90 0,000020 0,6 529 121 1
0
() 400 6,67 0,000021 0,7 624 126 1
0
Q} 500 7,34 0,000022 0,7 710 131 1
'e 750 8.66 0,000026 0,9 920 I 1871
0-
950 I 9,51 0,000028 1.0 I 1080 I 191
1200 I -- 1,1 1 1266 I, 1941
10,47 0,000030
1500 I 11,52 6,000032 1.2 I 1471 1 1981
I -0,44 I 0,000001 0,0 I -44 -3 I
I -0,64 0,000004 0,0 ' -65 -41
1 -6,90 0,000006 0,1 -95 -61
I -0,900,000008 0,1 -100 -61
c: 1 -0,64 0,000007 0,1 -75 -41
0
<n I
't: -0,48 0.000006 0,0 -59 -3
III
0- I -0.35 0,000004 0,0 -44 -2
E
0 I -0.251 0,000002 0,0 -33 I -5
()
I -0,14 1 0,000002 0.0 -26 I -1
1 -0,11 I 0,000001 0,0 -22 I 01
1 -0,10 1 0,000001 0,0 -18 I 01
I -0,07 I 0,000001 , 0,0 , -14 1 -11
~
24
PRE.SUBMITTAL RFr'n
JU N 4 2009 Ap,i12009
Springfield Mill Race
Section 206 Project
Floodplain Analysis
Table 3: Comparison of 100-year Middle Fork Willamelte River hydraulic parameters,under Existing
and Proposed Conditions (with changes highlighted)
I Station Q Min Ch WS, Vel Flow Top I
Plan Total EI Elev Chnl Area Width
I (ft) (efs) (ft) (ft) (IUs) (sq ft) (ft) I
I 22433 Existinq 35000 478,13 489,59 15,48 2359,59 413,87 I
Prooosed 35000 478,13 ~~~~;~~'il,?~5~~~t ~1~:29~~991,1~~~'~;~i
I 20976 Existinq 35000 474,00
Proposed I 35000 474,00 I~~~::~~~i 5,47~;~~~~:~~~lm;~~~;~~m
I 20867 Existinq I 35000 469,22 '
Proposed I 35000 469.22 I 489,00 5,47 13452,36 I 2170,44
I 20753 Existinq I 35000 464,11 I 488,73 7,12 11067,27 I 1978,95
Proposed I 35000 464,11 I 488,73 7,12 11067.27 I 1978,95
I 20650 Existinq I 35000 464,01 I 488,37 8,47 8829,35 I 1763.22
Proposed I 35000 I 464,01 I 488,37 8,47 8829,35 I 1763.22
I 20558 Existinq I 35000 I 455,90 I 488.27 7,68 8575.24 I 1756.34
proposed I 35000 I 455,90 I 488.27 I 7,68 8575,24 I 1756,34
I 20462 Existinq I 35000 I 461,04 I 488,01 I 8,32 7389,43 1706,25
Proposed I 35000 I 461,04 488,01 I 8,32 7389,43 1706,25
I 20373 Existinq I 35000 I 468,00 487,49 I 11,10 7072,58 1593,88
Prooosed I 35000 468,00 487,49 I 11,10 7072,58 1593,88
20269 Existinq I 35000 469,55 487,80 I 7,56 8838,81 1974,65
,Proposed I 35000 469,55 487,80 I 7,56 8838,81 I 1974,65
20165 Existinq I 35000 470,00 487,91 I 7,13 11379.24 I 2044,67
Proposed I 35000 470,00 487,91 I 7,13 11379.24 I 2044,67
20043 Existinq 35000 471,00 487,82 I 6,29 11214,03 I 2030,05
Proposed 35000 471,00 487,82 I 6.29 11214,03 2030,05
19923 Existinq 35000 472,70 487,76 I 6,12 10838,86 2028,02
Proposed 35000 472,70 487,76 6,12 10838,86 2028,02
19633 Existina 35000 473,00 487,78 I 4,51 14953.29 I 2429,23
Proposed 35000 473,00 487,78 I 4,51 14953,29 I 2429.23
19444 Existinq 35000 472,00 487,74 I 4.21 15156,30 I 2068,98
Prooosed 35000 472,00 487,74 I 4.21 15156.30 I 2068.98
19339 Existinq 35000 I 471,17 485,85 I 5,78 11044,18 I 1748.46
Prooosed 35000 I 471,17 485,85 I 5,78 11044,18 I 1748,461
19224 Existinq 35000 I 469.56 485,76 I 5,88 12161,99 I 3693.09
Proposed 35000 I 469,56 485,76 I 5,88 12161,99 I 3693,09 I
19100 Existinq 35000 I 468,74 485.54 I 6.28 8627,85 I 3629,35 I
Proposed 35000 I 468,74 485,54 I 6.28 8627,85 3629,35 I
18994 Existinq , 35000 I 469,00 485,45 I 6,03 8342,82 I 3065,14 I
Proposed 35000 I 469,00 485,45 I 6,03 8342,82 I 3065,14 I
18865 Existinq 35000 I 469,00 485,28 I 6,18 7601,57 li"!zT;f3'!.17ffil
Proposed 35000 I 469,00 485.28 I 6,18 7601,57 Il1,132T60)il
18642 Existinq 35000 I 468,00 484,99 I 6,76 7512,58 I 2976,73 I
Proposed 35000 I 468,00 484,99 I 6,76 7512,58 I 2976,73 I
-- "'. - 'PRE-SUBMITTAL REC'O
~ JUN 4 2009
25 April 2009
ATTACHMENT E
PLANTING PLAN TABLE
FOR SPRINGFIELD MILL RACE RESTORATION PROJECT - PHASE II
,"
PRE-SUBMITTAL REC'O
JUN 4 2009
'--
Attachment E - Springfield Mill Race Panting Plan. Phase'lI
Designation Quantity (per Total I
Scientific name Common name Type Size Spacing
acre) Quantity , I
Carex obnupta Slough Sedge Grass Plug 1000 3600 2' o,c, I
I Downingia elegans Common downingia . Forb 'Seed 21bs 7,2 N/A I
I Epilobium densiflorum Dense Spike-Primrose Forb Seed 21bs 7,2 N/A I
IGrindelia integrifoJia Gumweed Forb Seed 51bs 18 N/A I
Seasonal pondsl Pan.icum acuminatum or P. Western Witchgrass Grass Plug 1500 5400 2' o,c, I
occidentale
I Plagiobothrys figuratus Popcornflower Forb Seed 21bs 7,2 N/A I
I Rorippa curvisiliqua Curved-Pod Yellowcress Forb Seed 21bs 7,< N/A I
I Sparganium emersum Simple-Stem Bur-Reed Forb Plug 1000 3600 2' o,c, I
Camassia quamash Common Camas Forb Plug 1000 2000 2' o,c, I
ICarex obnupta Slough Sedge Grass Plug 500 100C.2' o,c, I I
. Emergent IGlyceria accidentalis Western mannagrass Grass Seed 10lbs 2CIN/A I I
Wetland I Myosotis laxa Small-Flowered Forget-me-not Forb Seed 2 Ibs 41N/A I I
IScirpus m;crocarpus Small-Fruited Bulrush Grass Plug 500 1000 2' o,c, I I
IscriPus tabernaemontanii Soft-Stem Bulrush, Tule Grass Plug 500 100012' o,c, I I
Camus sericea Red-osier dogwood Shrub 1 gal 4 2015' o,c, I I
I Lonicera involucrata Black twinberry Shrub 1 gal 2 1018' o,c, t I
Tree Clumps IMalus fusca Pacific crabapple Tree 1 gal 2 10115' o,c, I I
I Physocarpus capitatus Nine.bark Shrub 1 gal 3 15110' o,c, I ~
I Salix sitchensis Sitka willow Shrub Cutting 6 3013' o,c, I
Alnus rubra Red alder Tree 1 gal 30 90120' o,c, I I
I Corn us sencea Red osier dogwood Shrub 1 gal 250 75018' o,c, I I
IFranxinus latifolia Oregon ash Tree 1 gal 30, 90120' o,c, I I
Scrub-Shrub I Physocarpus capitatus Nine-bark Shrub 1 gal 250 750 8' o,c, I I
Wetland
I Salix lucid a Pacific willow Tree Cutting 50 150 6' o,c, I I
I Salix sitchensis Sitka willow Shrub Cutting 400 1200 3' o,c, I I
I Spirea douglasii Douglas' spirea Shrub 1 gal 250 750 6' o,c, I I
Carex obnupta . Slough sedge Sedge Plug 500 1600 2' o,c, I
ICarnus sericea Red-osier dogwood Shrub 1 gal 50 16015' o,c, I
Ash Forested I Fraxinus latifolia Oregon ash Tree 1 gal 100 320 15' o,c, I
Wetland
I Physo~rpus capitatus Nine-bark Shrub 1 gal 50 16015' o,c, I
Symphoricarpos albus Snowberry Shrub 1 gal 100 320 15' o,c, I
Achillea millefolium L. var. Western Yarrow Forb Seed 51bs 9,5 N/A I
occidentalis
IAsclepias speciosa Showy milkweed Forb Seed 21bs 3,81NIA I
I Brodiaea elegans Elegant brodiaea Forb Seed 21bs 3,8 N/A I
IClarkia amoena Farewell to spring Forb Seed 21bs 3,8 N/A I
Upland Prairie I Oanthomia californica California oatgrass Grass Seed 10lbs 19 N/A I
IFestuca romerii Romer's fescue Grass Seed 51bs 9,5 N/A I
IFragaria virginiana Broadpetal strawberry Forb Plug 500 950 4' 0,0, I
I Lupinus polyphyllus Large-leaf lupine Forb 4 in 500 950 4' o,c, I
Sidalcea virgata, S. campestris Rose checkermallow, Meadow Forb 4 in 500 9504' o,c, I
sidalcea
Acer circinatum Vine maple Shrub 1 gal 200 4680 8' o,c, I
IAcer macrophyllum Big-leaf maple Tree 1 gal 25 585 20' o,c, I
IBerberis aquifolia Tall Oregon grape Shrub 1 gal 100 2340 8' o,c, I
I Calocedrus decurrens Incense cedar Tree 1 gal 20 468 30' o,c, I
I Cornus nuttallii Pacific dogwood Tree 1 gal 25 585 15' o,c, I
I Corylus corn uta California hazelnut Tree 1 gal 25 585 15' o,c, I
I Pinus Ponderosa Willamette Valley Ponderosa pine Tree 1 gal 10 234 50' o,c, I
Riparian Ipolystichum munitum Sword fern Fern 4 in 500 11700 2' o,c, I
I Pseudotsuga menziesii Douglas fir Tree 1 gal 40 936 20' o,c, I
I Rosa nutkana Nootka rose Shrub 1 gal 200 4680~ o,c, I
IRasa pisocarpa Cluster flowered rose Shrub 1 gal I'''''' t?/l,'h. ".. ". 1'\\4~O 'o,c, I
I Rubus parviflora Thimbleberry Shrub 1 gal i\t;.~OOJIVllllf'lL 1\'4680 f1 o,c, I
I Salix lucida Pacific willow Shrub Cutting ~~l .,1 'ln~400 2'0,c, I
I Salix sitchensis Sitka willow Shrub Cutting ~" 400 2' o,c, I
ISymphoricarpos albus Snowberry Shrub 1 gal 200 4680 8' o,c, I
I