PC R 87-1126�A.I.Ti7T��fl�Y i'�] U:. �`37-1125
A R�.,'��UTiO�T O� T,'Ei� PI��; i�� G�l�i�'UI�SSI�3d �F
T�iF ��'i'Y �� A1Z��Y�O GRAI�T�E �P�Z�O�JI�TG TEl��'i'ATdVE
�'RACT t�'[A� N+�. 5a5, ��TPI�' 5, "��BC�'��S'i' �'A�".
6Y�.A�, the Planning Ccrrrr�ssion of the City of Arroyo Grtu�de has considered tinit
5 of Tentative 'I�act NTap I�To. 555, filed for by Oakcrest Asscciates an Huasna Road in
accorc]ance with the C�ty Code; and ,
9�3��A�, said tentative m,ap was reierre� to various public utility cempanies, City
de�ar�ents, and the Staff Advisory Corznrrittee for recorr�r,endations; and
�9�R�AS, the Plannir�g Ccrrnnission reccrrn�;er,ds that a Cond:tional Negative
Declaration of environm.ental effect be issued on this project. The conditions appropriate to
the Negative �eclaration include: ,
1. The applicants' engineer shall sutxnit a stuc}y of drainage flowing into tt�e tract and
propose alternative drainage solutions to the satisfaction of the Publie Works
Director in advance of recordation.
2. The installation of fire fighting facilities to the satisfaction of the Fire Chief.
Said facilities shall be shown on the tentative map.
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�Y(��, T�iE�tEFORE, BB IT �tFSOLVED that the Planning C��.sion of tY� City of � �
Arro�o Grande hereby approves said Tentative map, sub�ect to the following conditions:
1. ThE applicant shall file a soils report to be reviewed by the Director of Public
Worlc� and the Planning Director to deterinine whether further grading is required
on the ProPertY. Previous reports will be reviewed in this process.
2. The developer shall comply with Standard G�ty Specifications with res�ect to street
improverr�nts and drainage improver,�nts, as well as providing fees for the various
City-wide services including Parks and Recreation, street trees and utility fees..
3. Developer shall widen Huasna Road and install improverraents subject to City
St�ndarc�s and Specifications.
4. That a block wall or stone wall along the side yarcis of Lots 67 . and 82 shall be
provided. Said materials shall be approved by the Planning Director. Vehic�:lar
access and utility services sfiall be prohibited from the fivasna ftoad side yares of
thes� two lots.
5. That the developer shall provide a plot plan and parldng requirements for Lots 67
and 82 subject to the approval of the Planning Director.
6. That the developer shall provide a neighbort�ood fence up to 6 ft. in height along
the rear and side property lines of each lot; except the side property lines of I,ots
67 and 820
7. vi addition to the previotsly stated conditions and those which are set forth in a
letter from Paul Karp, dated Jime 26, 1987, the final determ.ination of necessary
easements and improvements to drainage will be as approved by the Director of
F'ublic Works and placed on the final map.
Or_ motion by Corraru,ssioner Gerrish, seconded by Carrgnissioner Flores, and by the
fo�ocvin� r:�ll call vote, to wit:
A��ES: Carmissioners Olsen, Flores, Gerrish, and Chr�irman Carr
�7�ES: Com�nissioner 11400re
El.�.'?a'I': Carrrc.ssioners Soto and Boggess .
the foregoing P�esolution was adopted this 7th day of July 1987.
A�sr- � G J
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Secretary Gfiainnan
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Because of questions which arise over the design of downstr�am pipe lines, as well as those
related to drainage from the Rc�ewood subdivision and the Pearwood basin, Staff has requested that the
developer provide a clrainage study. Such studies are nornzal design tools utilized in development of
criteria for design of hydraulic facilities for all suhdivisions. Such studies are normally perforn�ed
�fter approval of a tentative map because it is only after that ture that realistic projections of
suLdivision dt�ainage can be pinned down.
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TU: i�fed Rcgoway, Actir�g �latui?ng Director --
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FROM: Paul J Karp, Director of Public Works �.� .�� `�' ' y � �-
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P.ATE: Ji.me 26, 1987 ��;:�;'�;�;::=°
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SUBJECT: 'IY�act 55� - Qak Grest Estates "`°��'-` '
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This memo is prepai�ed in response to our discussions around June 17, 1987 on the �eferenced ,. '
tract. It is rm,� under5�tanding several questions were brought up at tre June 16, 1987 Planning �;„
Corrmussion meeting and it would �e helpful to the Commission if Public 4Vor(ts Staff would provide �_ -
background infoimation to address thcse concerns. � __- -
I3rair�ge � -
Drainage questions which we discussed included the Rosewood suk�division problerr�s '
encow,tered last year; reimbursement to the Ikeda Bros.; for structures within Sunny Gardens; and
e�nsion of the Pearwood drainage basin. �
Under the propesal at this tur�, Oak Crest would be ex�ected to continue to accept the
retarded Pearwood pond drainage to Huasna Road via newly reconstructed drainage facilities. Those :
facili�ies would have to be const,ructed in a manner which wouid also collect and receive surface water .-_ �. �
from the bac�s of the Rosewood lots which currently drain onto Oak C�est Fstates property. T.'�at �-
drainage could be conducted to a street with sufficient drainage capacity or an undetground structure :
should such be necessFUy as a result of e�sting terrain or imdersized downstream facilities. At the -
present tinae, there is an undergroimd drainage pipe which runs from the Pearwood basir, thrau�h the
F.oseN�ood subdivision and the 0ak C�est property into a 48 inch diameter pipe under Huasna Road.
That pipe used to d;scharge into a huge swale which was tributary to the Arroyo Grande Creek behind �
the City's sewer lift station on Huasna Road. When Sunny Gardens subdivision was develoFed,
eng�.neers were directed to design any drainage facility which was to be constructed within the huge �.
swale to be of sufficient size so as not to create flooding of the property upstream as a result of
lergthening the overall t�m of the 48 inch diameter culvert. Engirieers for the Ikeda Bros., who
developed Sunny Gardens calculated the minimiun size for this pipe e�ctension to be 60 inches in
diar�e�ter. Staff will ask enginesrs for Oak Crest Fstates to check that size to make sure it is sufficient ;
and whether a new garallel pipe line or other mitigating measvre m.aybe necessary. Inasruch as the
pipe extension which was placed by the developer of Simny Gardens was enly sized for continued
satisfactory operation of the 48 inch drain under Huasna Road, and to reclaim an existirig drainage
swale to be used for resit�ential development, no drainage reimburserrent from upstream develope.cs.
In adc�ition to questions related to norrnal subdivision development, the developer is being
asked te review slternatives available to the City for draining the Pearwood basin. Staff feels that
partions of the Pe�rwood drain will require maintenance ir. the future. The existing alignn�ent of that
draan u�tream of the Oak G�est property conflicts with private pro�rty improvements which have been
eonstructed ov�r the pipe line. Even if no irrenediate improvements to the Pearuvood drain are
r.ecessary, it would be wise of the City to take this opportunity to look at alternatives to the preseitt
•a�ignm�en2. Such alternatives may_affect downstream locations of facilities which will be constructed
by Oak Crest Fstates. 1fie new pipe line locations within the Oafc G�est �eveloprr�ent snould be
established at grades and lacations which will not preclude future tie-ins which may be planned by the
Citq after review of the proposed study.
At the present time, the Pearwood basin has �excessive silts wnich have reduced ponding
capeciry below that necessary for the 100 year event. At overflow, the basin would drain through an
e�rth c3i#ch along the northerly boundary of the Pearwocd subdivision and disc'.�arge into Huasra Road
�� at the City ]irmts.
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With developrr�nt of the Zc�ata st�bdivlsion the City required planning for future
reconstrur,tion of the Pearwood basin. In addition to that planning, iYlr. �ogata was recjvir�d to
e:�cavate svfficient additional capacity within the Peac�n;ood basin to accomrncdate increased drair,z.�e
flows from the Zogata progerty.
The additional grading heyond that performed by Mr. 7.ogata which is necessary to be
perforrr�d in the Fearvvood h.asin to m,ake sure t�'iat the b�sin is of sufficient size to acc�Yr3nodate the
100 year flood fmm areas outside the cit�j limits would cast the City between $100,000 and $200,000 to
accomplish. At fhis time, Staff has i�en f.lir�cted by tne Cit�J Council to fence three sides of the basin
and establish a quarry operation for sale of excess dirt on a"as needed" basis to various exeavators in
the area. Hope�ully, this oFeration �Ni11 yield a basin of su#'fieient size seme tur�e in the near futur2.
Thi� operation is very sirnilar to that whieh was used at tl�e So �o Sports Complex to create the cirainage
pond Fresently maintained at thr�t location.
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The subdivision as proposed has st�fficient roadways to provide for internal traffic circulation.
S�ht distance for the new intersection on Huasna Road apgears to be satisfactory, but shouid t;e
checked as a condition to approval of the subdivision. 1'he speeds on Huasna Road are established
according to State codes for radar enforcement. Any improvements necessaty to establish
satisfactory stopping sight distance for the new intersection should be completed at the developers
expense as a condition to the map approval.
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