HomeMy WebLinkAboutResolution - 666 - Amending Resolution No. 641 - Eden Farms PUD - 03/13/1973 VILLAGE OF EDE N PRAIRIE
HENNEPIN COUNTY, MINNESOTA
RESOLUTION NO. 666
A RESOLUTION AMENDING RESOLUTION NO.
641 - EDEN FARMS PUD CONCEPT PLAN
S,TIEREAS, additional reports and information have been secured
concerning the Eden Forms 'IUD Concept Plan,
THAT, Resolution No. 64.1 is hereby amended to incorporate these
reports and information which is made a part hereof and marked 'Exhibit
A and lExhibit Ci,
AND WHEREAS, the Developer, Shelter Homes Corp. was present and
agreed to these recommendations,
NOW THEREFORE, BE IT RESOLVED by the Council of the Village of
Eden Prairie, Hennepin County, Minnesota that the following recommendations
are mane a part of the Eden Farms PUD Concept Plan as follows:
Exhibit A.
Memorandum from Sather Ringrose Wol sfel d, Inc. , dated March 12, 1973,
recommendations on page three, C. Tiring of Development, 1 - 5.
Exhibit 13.
Letter from the U. S. Department of Agriculture, dated February 22,
1973, page two, recommendations 1 - 8.
ADOPTED by the Council of the Village of Eden ''rai ri e on March 13,
1973.
Paul R. Redpa th, Mayor
ATTEST:
1
SEAL
Edna M. Holm9ren, Clerk
_ EY,iI B I`L' A
marcel jouseau
2.1 rrafassionoI cc:n er
22�3 r>; ;t;t (;_7ri1;:1 ._ .,:nt;:' ro -vMc- rciinn.:;ota
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.��3 Phone 612 / 6s6- 4900
starch 12 , 1973
MEM0RANDUP4
TO : Mr . Di ci: Putnam , PI a n n e r
Village of Lden Prairie
FROM; : Marcel Jouseau
RE : Eden Farms Phase I -
Erosion and Sedimentation Control
In order to minimize the impact of the development of Eden Farms
Phase I on the immediate surroundings and on the Riley-Purgatory
Creek watershed as a whole , we propose that the development of
Phase I proceed in the order and manner described below .
It should be understood that a more precise description of the
responsi b-i 1 i ti es of the various contractors , of the manners in
which they are to proceed and of the techniques and means to be
utilized to achieve erosion and sedimentation control will be
written in the specifications . These specifications will be
submitted to the Engineer representing the Riley- Purgatory Creek
watershed for his approval prior to the beginning of construction .
Disturbance of the environment , though minimum will arise from -
- Construction of utilities
- Grading of cul - de- sac
- Construction of houses
{. COnStrUCtion of Storm Sewer and Sanitary Sewer (End of Cul -
de--Sac to Flood Plain-)
Construction of the sewer facilities will start from the
r' Creek and proceed Upward . A temporary settling pond to
retain the soil particles will be required at the bottom ,
�iciri nil n neerin transportation
Page 2
tf, ^ s '1ope d:.1r• ing construction of the se, aer• fac -iIities .
1"fr sto if: <, nd s ,il "i t ry sc:r! 1, i I)�,s till be pl aced ,l 1-1 �i n
i:i',e siill;F' tl'eilch to rll-I ni mi ze the c I ear cutti ng oi' tre. s and
1'e111oV�l1, o f gro (Ind CoV;'r- .
The 0 011 i ng up of -the trer, CII , Cunstructi on of uti l i ti es ,
bL, ckfi 11 "i 1-1g of the tI-e1-1Ch , and estab] i s111PenL- of the ground
c ; ver^ v/i I 1 be coifip'I eted 1.•!1 t h i n or;e week .
Uater 47rom -the s,-Lorin set•!er , before reachi ng the Creel: , wi 11
be hand-1 ed i n a 4;ay that vii 1 1 reduce the velocity of i : s
flo+.1 and co prevent the scouring of the b<anl: s and bed of
the Creek .
TI::: slope which has been exposed during construction work
I% "il -1 1)e broken into short sed;llerrts 25 to 50 fee-L in length
( to be d e t e r a i i r i e d by t h o Errgini-�er ) . Dams across the
trench will be built to retain the soil above them .
D. Construction of the Cul - de-Sac
A temporary se Ltl i ng pond at the end of the Cul -de- sac ,, to
retain sediments and prevent -t:hem from entering the storm
sewer system , will be built before %•rork on the grading of
the cul - de- sac begins .
Removal of the voc'jetati on will be perm-i teed only within
the area to be graded as shown on a plan developed by a
Landscape Arch i Lect .
, he extent of the grading will be limited to the t,,idth of
the road bed plus the width of side slopes necessary to
provide stable _ lopes .
Th u` i 1 i t•i es wi 1 l be laid do:•!n as soon as the work neces -
sary to rough grade the rood -is comple E.ed . The i=i nal
grading of side slopes is to be completed at the same time
that -the road is graded . Permanent. o'r• temporary stablization
of the side slopes if. to be achieved immed i a t:ely . S t a b i l 1 -
zat- i on of the slopes •,i l l be done in accordance with a plan
developed by a Landscape Architect and approved by the
Engineer representing the Riley- Purgatory Creek Watershed
District .
The surfacing of -the cut - de-sac will be clone i n accordance
with the Village r'equi remlents .
Page 3
r
I-Men all the t'tork has been cornpl et-ed and all bane areas
f-► avc he e n feet rnanent ly st�.b i 1 -i zed , the temporary sc,ttl �i ng
ponds Vi i 'I _I be removed and the areas wi 11 be stabi l i zed .
C . T i ni i n q of DeveIoi1rnent
.I t i s proposed that the deve1 opmen t proceeds i n the fol 1owi ng
order :
1 . Construction of a temporary settling pond at the
end of the cul - de-sac prior to beginning an the
grading of -the street , to retain soil particles
before they go do�an to the Creek .
2 . Construction of storm sewer and sanitary sewer
upward from the flood plain .
3 . Grading of the cul - de- sac bed and side. slopes
and stabilization of the slopes .
4 . Construction of utilities (water , sanitary sewer ,
electricity , etc . )
5 . Surfacing of cul -de-sac.
i11 : c
EX1-TJBIT B
(D;- U L": lj:`
Ki Hq QOI i S Mi KNOISCIta 5542/ February 22, 1973
Ecian Ppairie, Minnasota 55343
V . NO PuNna-,
V i 1 Nge Pl anner
Var Dick :
is a review oF the Eden Farm S i N Development Plan as
pDr yujr PLcju,�st o- February IF) , 1973 .
Thn zoils in the aroa are for the nwst purt vNium to moderately
Vika taxtured clayey soils that tends to be sticky when wet and hard
Tho soils have high moisture storage capacity and arc!
modarake to moderately slow in permeability. L,�nds 'to drain off
rim surface to Oprassions rather than percolKe through the soil
lo-r soils along the floodplain and low soils leading up to the
hills , Looping values and stability are expacted to be adequate. High
loundation costs should not by expected. The fact that the soils COHYa
in vMuns with moisture change (shrink swell ) and Ove perched seasonal
must be considered in design . Fou-ndiction drainage is a
on all soils . The Cordova (Co) , Oundas (Du ) and MY
(Ho) need particular attention in terms of watnuss .
Thn Lila" consideration , on the site, in nW judgen2nt , are the steep
slop2s . Tho slope analysis map prepared by Bother Ringrose and Walsfeld
hnd M2 soil mvp prepared by the Soil Consarvation Service indicate
Mansivo arras with slope gradients of more than 15% While it cannot
in sold that steep slopes cannot be developed (in this case we expect
soil to he fairly soble if they are developed) the risk of significant
ln6j alt2ration is high. For this reason certain slope phases of the
so ! is on this site described in the 1969 Hennepin County Soil Survey , are
r. Vaj as having suvere limitations for development.
urf-,�:s; OF steep slopHs can no doubt be planned without undue land
M WraKuH , but observation of davelopment on similar steel) 1 ,,,nds in
00 Cities Area indicate that many areas are likely to to heavily graded.
Kgh quality construction standards need to be employed such as notching
Kul dings into hills rather than simply leveling the site.
It is difficult to know the extent of grading planned QUM a siN,
and gr6ding plan but it appears that extensive cutting and filling will
be necessary to prepare this site which would mean the potential for
sedin.ent and water loss to downstream positions would be severe. The
energy status of the landscape to produce water runoff and erosion is
high .
Roads and buildings should be designed around the existing landscape
to minimize grading and other site preparation to reduce land alteration
and the potential for water runoff and sedimentation.
1 . A number of temporary debris basins should be constructed near
the lower reaches of the small drainage ways on the tract. The
exact location and design of these can be determined when detailed
site plans are completed. The purpose of these structures is to
trap sediment and debris during the initial period of construction.
,iaintain these basins by desil -cing them as necessary to obtain
optimum trap efficiency.
2. Storm drainage facilities should be completed and made operational
as soon as possible during construction . Small debris guards
should be used to protect the storm drain inlets from blockage
during the construction period.
3. Complete construction of main street circling each cluster before
proceeding to grading for buildings .
4. Use incremental development rather than breaking up large tracts
of land simultaneously; this will help minimize the du;•ati on of
exposure of the land to erosion and will greatly reduce damages
during the construction period.
S. Top soil should be stockpiled and used later on areas to be
stabilized by permanent vegetation.
6. Exposed and eroding areas should be established in temporary
vegetation if such areas will not be built on within a period of
60 days. This seeding should be done immediately upon completion
of rough grading.
7. Mulch , temporary diversions , contour furrows , terra--es and other
simple conservation practices should be used where appropriate for
erosion control .
8. Permanent vegetation should be established immediately upon
completion of final grading on all areas where this practice is
applicable.
In response to the question , "What will the densities proposed have upon
the recharge process?" , we can only say that runoff will greatly increase
because of roofs , streets and parking areas . The affect on water levels
in the creek is also difficult to assess except to say that flood hazards
will probably increase, however hydrologic studies will be required to
ascertain this .
I am not sure if anyone can speak with real assurance on the signifi-
cance of the recharge process in this area. Some Geologists believe the
deep glacial debris in the area is fractured and that surface waters
contribute to deep bedrock aquifers . Actual data, I suspect, is difficult
to come by. We can expect, however, that with increased runoff the recharge
of the bedrock zones will be diminished.
It must be pointed out, that all developments are very likely -to reduce
infiltration of water into the soil unless provisions are made to retard
runoff from the area. Even this may not increase or maintain former
recharge rates as artificial ponding sites are often impervious and most
o-f the stored water is dissipated by evaporation.
Regards ,
Patrick iN Kennedy
District Conservationist
C is