HomeMy WebLinkAboutTract Map 21765 Hydrology Report•
PLANNING COMMISSION: November 15, 1989
Agenda Item No. 1
RIVERSIDE COUNTY PLANNING COMMISSION MEETING
BOARD ROOM - 14th Floor - 4080 Lemon Street - Riverside
PLANNING COMMISSION CONSENT CALENDAR STAFF REPORT
NOTE:
The following will be presented to the Planning Commission as a consent calendar
item. Unless specifically requested by the applicant at the time of consideration,
these item may not be discussed and is subject to approval by the Commission
under a single motion.
CEQA: The following tracts has conformed to the requirements of the Calfornia
Environmental Quality Act of 1970. It has been determined that the individual
map will not have a significant effect upon the environment.
GENERAL PLAN: Unless otherwise noted, the following tract has been determined to
be consistent with the general plan and its elements.
RECOMMENDATIONS: The applicant of the following map has requested an extension
of time to allow for recordation of a final map. Staff has reviewed the request
and recommends approval.
TRACT NO. 21765 - Robert Bein, William Frost & Associates - Rancho California
Area - First Supervisorial District - 15 Lots - 11.8 Acres - South of Solano
Way, west of Margarita Road, north of South General Kearney Road - Schedule B -
R -A -z Zone - Extension of Time Through May 19, 1990 - FIRST EXTENSION.
kKJJ: bc
10/16/89
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I
HYDROLOGY REPORT
FOR
TRACT NO. 21765
Prepared for:
KAISER DEVELOPMENT COMPANY
APR 1 19B
Prepared by:
RIVERSIDE COUNTY ROAD
°]' VEY DEPARTP.9E�!T
`7ZobeaT `Beir6,�lliam`Fi'ost 6& �` ssocfat�
PROFESSIONAL ENGINEERS. PUNNERS& SURVEYORS
VO ROi191]9.1�1]S�IiOH VnRNwnY IRVIN,CA1110RNu92118
9w(11,, q3 ]505
Contact Person: Dale Kron
JN 23687
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December 21, 1987 Q ��ot) 9�
Revised March 8, 1988 w �c 25asa o T,
0(1'.3/31/91 z
Revised April 12., 1988 C/w,
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9rFOF CAO'F'
TABLE OF CONTENTS
Sheet Number:
Introduction
Hydrology Calculations
Catch Basin #43 Calculations
10. Concrete Channel Calculations
1
TRACT NO. 21765 HYDROLOGY
The drainage area encompassed by this Hydrology Report was included as an
offsite tributary drainage area in the Hydrology -Hydraulics Report
prepared for Tract No. 20882-1. The final design of this project has
produced slightly modified drainage areas, time of concentrations and
resulting Q's draining to C.B. No.'s 43 and 44, which were designed and
will be constructed as a part of Tract No. 20882-1. The originally
calculated Q's and the presently calculated Q's draining to those C.B. 's
are tabulated below along with the Q draining to C.B. No. 40 which will
remain the same.
From observation of the above tabulation it can be seen that the
hydraulics of the storm drain system designed for Tract 20882-1 will not
be affected by the new Q's calculated for Tract 21765. Therefore, no
additional hydraulic calculations are included in this report.
This development is located within the limits of the (1) Murrieta Creek
(Temecula Valley) Area Drainage Plan for which drainage fees have been
adopted; applicable fees will be required to be paid prior to recordation
of the final map. At the option of the land divider, applicable fees may
be deferred to the date of issuance of the first grading or building
permit on each percel. Fees to be paid should be at the rate in effect at
the time of issuance of the actual permit.
Tract No.
20882-1
Tract No.
21765
Hydrology
Report
Hydrology
Report
C.B. No. 40
Q10=14.0
cfs
Qi=12.5 cfs
Qc/o=1.5 cfs
Q100-21.9
cfs
Qi=14.5 cfs
Same
Qc/o=7.4 cfs
C.B. No. 43
Q10=26.6
cfs
Qi=20.0 cfs
Q10=23.9
cfs
Qi=18.8 cfs
Qc/o=6.6 cfs
Qc/o=5.1 cfs
Q100=41.3cfs
Qi=24.0 cfs
Q100-37.8
cfs
Qi=24.8 cfs
Qc/o-17.3 cfs
Qc/o=13.0 cfs
C.B. No. 44
Q10=12.3
cfsQ10=13.3
cfs
Sump
Q100=38.7
cfs
Q100-31.2
cfs
From observation of the above tabulation it can be seen that the
hydraulics of the storm drain system designed for Tract 20882-1 will not
be affected by the new Q's calculated for Tract 21765. Therefore, no
additional hydraulic calculations are included in this report.
This development is located within the limits of the (1) Murrieta Creek
(Temecula Valley) Area Drainage Plan for which drainage fees have been
adopted; applicable fees will be required to be paid prior to recordation
of the final map. At the option of the land divider, applicable fees may
be deferred to the date of issuance of the first grading or building
permit on each percel. Fees to be paid should be at the rate in effect at
the time of issuance of the actual permit.
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PROFESSIONAL ENGINEERS, PUNNE IS 6 SURVEYORS
.0609197"* I.iiSaTOMPARMAY IRVINE GUIORM,H2110
FACILITY .NO
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Date
Hydraulics and
Notes
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Concentration
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Group
Land
Use
ft
mm
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L jg
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Hydraulics and
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- ROBT BEIN, WM FROST & ASSOC -
AOS REV 03.40
ADS XLPT REV 03.49
CREATED:
8 -MAR -88
14:57:36
ENQUEUED:
8 -MAR -88
14:57:38
PRINTING:
8 -MAR -88
14:57:39
PATH=: QUEUE: MAT. 0001.
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- ROBT BEIN, WM FROST & ASSOC -
AOS REV 03.40
ADS XLPT REV 03.49
•* RESULTS OF IRREGULAR CHANNEL ANALYSIS +*
CALCULATIONS BASED ON MANNINGS EQUATION
WITH ALL DIMENSIONS IN FEET OR FEET AND SECONDS
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««««««««< ««< ««««««««»»»»»»»»»»»»»»»»»»»
(C) Copyright 1983,1986 Advanced Engineering Software EAES3
Especially prepared for:
ROBERT BEIN, WILLIAM FROST & ASSOCIATES
1401 QUAIL STREET, NEWPORT BEACH, CA., 92663
«««««««««<<<<««««««««»»»»»»»»»»»»»»»»»»»
Advanced Engineering Software EAES3
SERIAL No. E0009
VER. 2.3C RELEASE DATE: 2/20/86
6
*a*aaaa+►**DESCRIPTION OF RESULTSaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa+
a TRACT 21765 , CATCH BASIN NO. 43
a 10 -YEAR FLOW DEPTH , 66 -FT SECTION ( HALF SECTION)
a 010 - 23.9 CFS S -INCH CURB
aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaataaaaaaaaaaaaaaaaaaaaaaaaaaa+
----------------------------------------- - -----
a ENTERED INFORMATION FOR SUBCHANNEL NUMBER 1 :
NODE NUMBER "X" COORDINATE "Y" COORDINATE
1 .00 .90
2 11.00 .67
3 11.01 .00
4 13.00 .16
5 21.00 .56
6 33.00 .74
SUBCHANNEL SLOPE(FEET/FEET) - .050000
SUBCHANNEL MANNINGS FRICTION FACTOR - .015000
..........................................................................
SUBCHANNEL FLOW(CFS) - 24.0
SUBCHANNEL FLOW AREA(SOUARE FEET) = 2.89
SUBCHANNEL FLOW VELOCITY(FEET/SEC.) 8.297
SUBCHANNEL FROUDE NUMBER - 2.981
SUBCHANNEL FLOW TOP-WIDTH(FEET) = 12.00
SUBCHANNEL HYDRAULIC DEPTH(FEET) _ .24
----------------------------------------------------
TOTAL IRREGULAR CHANNEL FLOW(CFS) WANTED - 23.90
COMPUTED IRREGULAR CHANNEL FLOW(CFS) = 23.96
ESTIMATED IRREGULAR CHANNEL NORMAL DEPTH WATER SURFACE
ELEVATION ............................. .59
NOTE: WATER SURFACE IS BELOW EXTREME
LEFT AND RIGHT BANK ELEVATIONS.
7
ROBERT BEIN WILLIAM FROST AND ASSOCIATES
Catchbasin Design for Riverside County
DATE: 3 / 4 / 1988 CATCHBASIN 43
INPUT DATA:
Q( 10 )= 23.9
FLOW DEPTH .59
REET SLOPE = .05
FRom IZVLGGOLAcp, C-AACNNEL, AcNAL`515)
-----------------------------------------
OUTPUT DATA:
CALCULATED WIDTH= 28.118946 DESIGN WIDTH= 21
0intercept= 18.806978 Ocarry= 5.0930222
Formulas taken from city of L. A. charts LL -12, 13, 14, 15.
C
I
**********DESCRIPTION OF RESULTS**+++t+*a+t*+ta+►a*na****a+c*aa+t+►
* TRACT 21765 , CATCH BASIN NO. 43
* 100 -YEAR FLOW DEPTH 66 -FT. SECTION ( HALF SECTION )
* Q-100 = 37.8 CFS 8 -INCH CURB
--------------------------------------------------
* ENTERED INFORMATION FOR SUBCHANNEL NUMBER 1 :
NODE NUMBER "X" COORDINATE "Y" COORDINATE
1 .00 .90
2 11.00 .67
3 11.01 .00
4 13.00 .16
5 21.00 56
6 33.00 .74
SUBCHANNEL SLOPE(FEET/FEET) _ .050000
SUBCHANNEL MANNINGS FRICTION FACTOR = .015000
............................................................................
SUBCHANNEL FLOW(CFS) = 38.5
SUBCHANNEL FLOW AREA(SQUARE FEET) = 4.85
SUBCHANNEL FLOW VELOCITY(FEET/SEC.) = 7.938
SUBCHANNEL FROUDE NUMBER = 2.975
SUBCHANNEL FLOW TOP-WIDTH(FEET) = 21.91
SUBCHANNEL HYDRAULIC DEPTH(FEET) _ .22
-----------------------------------------------------
TOTAL IRREGULAR CHANNEL FLOW(CFS) WANTED = 37.30
COMPUTED IRREGULAR CHANNEL FLOW(CFS) = 38.46
ESTIMATED IRREGULAR CHANNEL NORMAL DEPTH WATER SURFACE
ELEVATION ............................. .71
NOTE: WATER SURFACE IS BELOW EXTREME
LEFT AND RIGHT BANK ELEVATIONS.
I
ROBERT BEIN WILLIAM FROST AND ASSOCIATES
Catchhasin Design for Riverside County
DATE: 3 / 8 / 1988 CATCHBASIN 43
INPUT DATA
G( 100 )= 37.8 STREET SLOPE = .05
FLOW DEPTH .71 G4L�t_L 518 1
-----------------------
OUTPUT DATA:
CALCULATED WIDTH= 34.802515 DESIGN WIDTH= 21
Gintercept= 24.827244 Gcarry= 12.972756
Formulas taken from city of L.A. charts LL -12,13,14,15
`1t2bWB=gGWILImmcFAWL8c` ssoasles
PROFEDSOW tioEFR& PI"S%NO RX"ErOM
14725 ALTON PARKWAY, P.O. BOX 19739
IRVINE, CALIFORNIA 92817
(714) 4723505
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HYDRAULIC ELEMENTS — I PROGRAM PACKAGE
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«««««««««««««««««««»»»»»»»»»»»»»»»»»»»
(C) Copyright 1982,1986 Advanced Engineering Software EAES3
Especially prepared for:
ROBERT BEIN, WILLIAM FROST & ASSOCIATES
1401 QUAIL STREET, NEWPORT BEACH, CA., 92663
«««««««««««««««««««»»»»»»»»»»»»»»»»»»»
<««««««««««««««««««<»»»»»»»»»»»»»»»»»»»
Advanced Engineering Software EAES3
SERIAL No. F0009
VER. 2.3C RELEASE DATE: 2/20/86
<««««««««««««««««««<»»»»»»»»»»»»»»»»»»»
**********DESCRIPTION OF RESULTS*#+raanae+r**a+n+rae++r*ua*a++r#a+r+re#+r+a+raaa+aa#+
* TRACT 21765 CONCRETE CHANNEL N`LY LOT 10
* CALCULATIONS WORST CASE ( V -N & D -N )
* 0-100 = 21.0 CFS
****************************************************************************
»»CHANNEL INPUT INFORMATION««
----------------------------------------------------------------
CHANNEL Z(HORIZONTAL/VERTICAL) _ .00
BASEWIDTH(FEET) - 5.00
CONSTANT CHANNEL SLOPE(FEET/FEET) _ .010000
UNIFORM FLOW(CFS) - 21.00
MANNINGS FRICTION FACTOR .0140
ccaxx=aaaaxsaxasas¢xm¢=aaaaa¢axxaaaaaaaasxaxaaaaaaaasaaaxxaaaaae
NORMAL—DEPTH FLOW INFORMATION:
----------------------------------------------------------------
»»> NORMAL DEPTH(FEET) _ .63
FLOW TOP— WIDTH(FEET) = 5.00
FLOW AREA(SQUARE FEET)
HYDRAULIC DEPTH(FEET) _ .63
FLOW AVERAGE VELOCITY(FEET/SEC.)
UNIFORM FROUDE NUMBER - 1.489
PRESSURE + MOMENTUM(POUNDS) _
AVERAGED VELOCITY HEAD(FEET) _
SPECIFIC ENERGY(FEET.) - 1.323
3.14
D= On+
tNc4<o�G
I .�3
Q : 1.33` = cttkH�vc+_ per
6.69
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333.81 WIC'_ C+t5,1C-2 PMNio
696 lAi G k -e a- rHhN �rkS
c=a==aaaaaaxa¢saaaaa¢aaaaxxaaaxx=xsxsa=aaaaxaxsasaaaaasaaa=aaasa¢a=aaaaaasaa
CRITICAL—DEPTH FLOW INFORMATION:
CRITICAL FLOW TOP—WIDTH(FEET) = 5.00
CRITICAL FLOW AREA(SQUARE FEET) = 4.09
CRITICAL FLOW HYDRAULIC DEPTH(FEET) _ 82
CRITICAL FLOW AVERAGE VELOCITY(FEET/SEC.) = 5.13
CRITICAL DEPTH(FEET) ¢ .82
CRITICAL FLOW PRESSURE + MOMENTUM(POUNDS) 313.33
AVERAGED CRITICAL FLOW VELOCITY HEAD(FEET) _ .408
CRITICAL FLOW SPECIFIC ENERGY(FEET) - 1.227
------------------- -------
HYDRAULIC ELEMENTS - I PROGRAM PACKAGE
(C) Copyright 19B2,1986 Advanced Engineering Software CAES7
Especially prepared for:
ROBERT REIN, WILLIAM FROST & ASSOCIATES
1401 QUAIL STREET, NEWPORT BEACH, CA., 92663
Advanced Engineering Software CAESI
SERIAL No. F0009
VER. 2.3C RELEASE DATE: 2/20/86
********#*DESCRIPTION OF RESVLTSaaaaaau#a####�r###aaaaa#aaaaaaa+ra+ra+ra,rxaaaa#a
* TRACT 21765 FINAL HYDRAULICS CONCRETE CHANNEL S`LY D. WY LOT 14
* WORST CASE 0-100 = 9.1 C.F.S.
* *
*a,.******•asa*************•o-aaxao-*4*****************a•qa****a*a*****A•n**a******
*�*•o-*******sr*�**a*******aaa,r+ra**a***a*************a**a***•x*+t***a*•xaaa*******
-.:-,CHANNEL INPUT INFORMATION <<<:
-------------------------------------------------------------------------------
CHANNEL Z(HORIZONTAL/VERTICAL) _ .00
BASEWIDIIi(FEET) = 3.00
CONSTANT CHANNEL SLOPE(FEET/FEET) _ .037200
UNIFORM ILOW(CFS) = 9.10
MANNING: FRICTION FACTOR = .0140
------------------------------------------ --
NORMAL-DF-PTH FLOW INFORMATION:
----------------------------------------------------------------------------
NORMAL DEPTH(FEET) _ .35
p= + —� EMERGY G.�.
~ 2�
FLOW TOP- WIDTH(FEET) = 3.00
1�0
FLOW ARLA ( SQUARE FEET) = 1.04
= •35 + 1 zo' = 1.55 C HRNNf
HYDRAULIC: DEPTH(FEET) = .35
OEP kl
FLOW AVC -RAGE VELOCITY(FEET/SEC.) = 8.79
UNIFORM F-ROUDE NUMBER = 2.635
_1 V+ez>R-T iNEoReT
PRESSURE + MOMENTUM(POUNDS) = 166.10
-r
oFi(w.H NEJE2 Ea- T1}kC4 oTH 5
AVERAGED VELOCITY HEAD(FEET) = 1.199
SPECIFIC ENERGY(FEET) = 1.544
I.Zo FREE GcgfF o 46ov6 ON
CRITICAL 'DEPTH FLOW INFORMATION:
-------------------------------------------------------------------------------
CRITICAL. FLOW TOP-WIDTH(FEET) = 3.00
CRITICAL FLOW AREA(SGUARE FEET) =
1.96
CRITICAL FLOW HYDRAULIC DEPTH(FEET) _ .66
CRITICAL FLOW AVERAGE VELOCITY(FEET/SEC.) =
4 60
CRITICAL DEPTH(FEET) = .66
CRITICAL FLOW PRESSURE + MOMENTUM(POUNDS) =
121.82
AVERAGED CRITICAL FLOW VELOCITY HEAD(FEET) _
.329
CRITICAL FLOW SPECIFIC ENERGY(FEET) =
.988
HYDRAULIC ELEMENTS - I PROGRAM PACKAGE I'L
(C) Copyright 1982,1986 Advanced Engineering Software [AES]
Especially prepared for:
ROBERT REIN, WILLIAM FROST & ASSOCIATES
1401 QUAIL STREET, NEWPORT BEACH, CA., 92663
.♦ _ •_ f �` t___ \.' .. r .F r i i r r- :> . r u
">X
Advanced Engineering Software /CAESI/
SERIAL No. F0009
VER. 2.3C RELEASE DATE: 2/20/B6
##########DESC:RIPTION OF
# TRACT 21765 FINAL HYDRAULICS
# UNDER -WALK DRAIN CAPACITY CALC. FOR DRAIN @ STA 15+44.37
a 0-100 = 21.0 C. F. S. tALm 303 rbD. #
a###4x4##a#a`v.####hi####a#44hhA.i+too44#-Ya-r#4###o#4,r 444 a q-4 #axA hart .S#a44a###4####
##########4a############a44a #74#444###a######a######A###44######44a#aa######
,>-%CHANNEL INPUT INFORMATION<_f_,__
-----------------------------------------------------------------------------
CHANNEL Z(HORIZONTAL/VERTICAL) _ .00
BASEWIDIH(FEET) = 5.00
CONSTANT CHANNEL SLOPE(FEET/FEET) = 020000
UNIFORM FLOW(CFS) = 21.00
MANNINGS FRICTION FACTOR = .0140
NORMAL -DEPTH FLOW INFORMATION:
-----------------------------------------------------------
»»> NORMAL DEPTH(FEET) = 50 ,.a tJ
FLOW TOP- WIDTH(FEET) = 5.00
FLOW ARFA(SGUARE FEET) = 2.51
HYDRAULIC DEPTH(FEET) = 50 i" G�A!sGotV(�-� cS�RFc
FLOW AVERAGE VELOCITY(FEET/SEC.) = 8.37 '7 t)TJ
UNIFORM FROUDE NUMBER = 2. 083 'T E7 `- �`?
'
PRESSURE. + MOMENTUM(POUNDS) = 379 99
AVERAGED VELOCITY HEAD(FEET) = 1 089
SPECIFIC ENERGY(FEET) = 1.590
CRITICAL -DEPTH FLOW INFORMATION:
----------------------------------------------------------------------------
CRITICAL FLOW TOP-WIDTH(FEET) = 5.00
CRITICAL FLOW AREA(SGUARE FEET) = 4.09
CRITICAL FLOW HYDRAULIC DEPTH(FEET) _ .82
CRITICAL FLOW AVERAGE VELOCITY(FEET/SEC.) = 5 13
CRITICAL DEPTH(FEET) = 82
CRITICAL FLOW PRESSURE + MOMENTUM(POUNDS) = 313.33
AVERAGED CRITICAL FLOW VELOCITY HEAD(FEET) = 40B
CRITICAL FLOW SPECIFIC ENERGY(FEET) = 1.227
HYDRAULIC ELEMENTS - I PROGRAM PACKAGE
(C) Copyright 1982,1986 Advanced Engineering Software CAES]
Especially prepared for
ROBERT DEIN, WILLIAM FROST & ASSOCIATES
1401 QUAIL STREET, NEWPORT BEACH, CA., 92663
< -, •.
--I...
.' -- ..... -'
Advanced Engineering Software CAESI
SERIAL No F0009
VER 2.3C RELEASE DATE 2/20/86
##########DEI:CRIPTION OF
# TRACT 217"+:, FINAL HYDRAULICS #
# UNDER -WALK DRAIN CAPACITY CALC FOR DRAIN t� STA. 12+17.37
# Q-100 = 9.1 C. F. S. W-
* * * * * 4 * K- * 4 4 * * * * * * 4 4 4 4 4 4 * 4 4 * * � w,* * 0 4 # * * * * 4 * ? -* 0 4 4 *
"_b######%b:###?################?#b##?b####b###�w#kx##tib##4#??#??#
CHANNEL INPUT INFORMATION::C'
----------------------------------------------------------------------------------
CHANNEL `[(HORIZONTAL/VERTICAL) = OG
BASEWIDIII(FEET) = 3.00
CONSTANT CHANNEL SLOPE(FEET/FEET) = 020000
UNIFORM FLOW(CFS) = 9 10
MANNINGS FRICTION FACTOR = 0140
---------------------------------- -----------------------------
NORMAL-I)FPTH FLOW INFORMATION:
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - _-----------------\---
NCINNAL DEPTH(FEET) = 42 L ?k.' y Y
FLOW TOP- WIDTH(FEET) = 3 ',-i0 r T' i
FLOW AREA.(SQUARE FEET) = 1 26
HYDRAULIC DEPTH(FEET) = .42
FLOW AVERAGE VELCCITY(FEET/SEC.) = 7.20
UNIFORM FROUDE NUMBER = 1 953 7rr r`/ mac',
PRESSURE +• MOMENTUM(POUNDS) = 143 53
AVERAGED VELOCITY HEAD(FEET) = 804
SPECIFIC ENERGY(FEET) = 1.226
----------- ----------------------------- -
CRITICAL. -DEPTH FLOW INFORMATION.
------------------------------------------
CRITICAL FLOW TOP-WIDTH(FEET) = 3 00
CRITICAI FLOW AREA(SQUARE FEET) = 1.9S
CRITICAL FLOW HYDRAULIC DEPTH(FEET) _ .66
CRITICAL FLOW AVERAGE VELOCITY(FEET/SEC.) = 4.60
CRITICAL DEPTH(FEET) = .66
CRITICAL FLOW PRESSURE + MOMENTUM(POUNDS) = 121.62
AVERAGED CRITICAL FLOW VELOCITY HEAD(FEET) = 329
CRITICAL FLOW SPECIFIC ENERGY(FEET) = 968
--------------- ---------------------------------------------------------
HYDRAULIC ELEMENTS - I PROGRAM PACKAGE
-----------------------------------------------------------------------------
----------------------------------------------------------------------------
tr..':C:C!::C�':CCCC:;.cCCCt:<:C{CCC<.CC'.CC
(C) Copyright 1982,1986 Advanced Engineering Software CAESI
Especially prepared for.
ROBERT DEIN, WILLIAM FROST & ASSOCIATES
1401 QUAIL STREET, NEWPORT BEACH, CA., 92663
;:CC;:CCCCCCCCi:'':Ct.C::Sa..:C
Advanced Engineering Software CAES7
SERIAL No. F0009
VER. 2 3C RELEASE DATE: 2/20/86
******a#**DES(:RIPTION OF RESULTS####a+r+raaa raax caaa r raa+raa tai#a#eaaaaaaaaaa
* TRACT 21765 FINAL HYDRAULICS �r
* C. S. P. ARCH PIPE X-ING LOT 14 DWY ZS"x IL a
# 0-100 = 8. 1 C. F. S. a
*,ta***a**,r-s+taa#aa****a,ta+taaaaxa#+r*�r*a#e,t#aaa*****aaattaau*a** t *****aaaarcaa**tt
a,r**st*a***a*a*rt**iraaa*troaaea+raaaaa**#tt##+r**#*?t*srarrro-.�**tta*s+tra*+ta+r,raaxaa***a*
>>PIPEFLOW HYDRAULIC INPUT INFORMATION<.:C?C
------------------------------------------------------------------------------
PIPE DIAMETER(FEET) = 1.750 eQotV. Ci4rN'E`SP_
PIPE SLUPE(FEET/FEET) _ .0200
PIPEFLOW(CFS) = 8.10
MANNINGS FRICTION FACTOR = .024000
-----------------------------------------------------------------------
CRITICAL-DEPTH FLOW INFORMATION:
-----------------------------------------------------------------------------
CRITICAL DEPTH(FEET) = 1.06
CRITICAL FLOW AREA(SQUARE FEET) = 1.517
CRITICAL. FLOW TOP-WIDTH(FEET) = 1 712
CRITICAL FLOW PRESSURE + MOMENTUM(POUNDS) = 127 00
CRITICAL FLOW VELOCITY(FEET/SEC.) = 5.341
CRITICAL FLOW VELOCITY HEAD(FEET) = .44
CRITICAL FLOW HYDRAULIC DEPTH(FEET) = 89
CRITICAL FLOW SPECIFIC ENERGY(FEET) = 1 50
----------------•------------------------ ------ --- ------------------------
NORMAL-DEPTH FLOW INFORMATION:
------------------------------------------- ------------------------------
NORMAL DEPTH(FEET) = 1.05
FLOW AREA(SQUARE FEET) = 1.50
FLOW TOP WIDTH(FEET) = 1.716
FLOW PRESSURE + MOMENTUM(POUNDS) = 127.00
FLOW VELOCITY(FEET/SEC.) = 5 404
FLOW VELOCITY HEAD(FEET) = .453
HYDRAULIC DEPTH(FEET) = 87
FROUDE NUMBER = 1.019
SPECIFIC ENERGY(FEET) = 1.50
`IbbWSeutcWillia111`FibstMc ssocikes 15 .me NO Z368-7
`YOFESS MALENGNEERS,PLANNERSumS'"'EYOf4 TRACT 21765 r-:iNA4, _ gyd'hu-�-�ji�,4WAN
14725 AL TON PARKWAY, P.O. BOX 19739 V- --(d Q Au l,t CS BATESs I
IRVINE, CALIFORNIA 92817
(714) 472350.5 1N 6gi CAL -5--' ZS" A` U�' L. S IO, SH -Of -
2.G w
HOf
25° x IL" C.G.P.
Qtoo = 13.1 c.F.�.
FROM �NQMON 0 F PvgLkL- R,oAs.oS Ct.►-phCT
11'e&-OWArTCrz De9TH Fop- C, PA. PtPC-
C- U
eC-U LV e Q -,T t u% iTt4 1 H LeT CsNT2o L.
Fcic> m Gy R �T
PIPE INu. 1143.43
+ I. 4d' 4.w
1144,a3'
ToP 46A -O VJ PrLL_ 1145.33
► 145.33 - 1144.83 =
.S 1=aec aep�rtq
■
CHART 6
5,000 (,
16'-7'x 10'-1' 4,000 4 (2)
1 15'-4'19'-3' 3,000 EXAMPLE 4 3)
Six.. 36' • 22' 3 r 4
* 2,000' 0.20.1. Illi
12'-10'1 8'-4'
a NWe NW 3
j D (feet) 3
Sw
a I I -S'a 7 -3' 1,000 Iq LID 2.0
e: a 12) 1.15 2.1 2
zBoo (3) 1.22 2.2
a
un 9'-6' x 6'-5' 2 2
F 600 e0 in lost
,6 mm 500 5
- It' -2' a 5'-9' 400
N
300 1.5 1.5
200
= 6'-1'x4'-7' -- --
U
R
4 / I.0 1.0
01 00 72' A 44' 100
d U BO / i .9 1.0
Z E / — 9
O 65' x 40'60
o
w w 50 / .B .8
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58'136* L0 40 / o
8
Z 30 / ¢
4 50' x 31' rn / w .7 .7
a o / r _
N
/ 20 MW ENTRANCE ? '7
w D GALE TYPE
�+ 43'127'
o ~
/ UI Neaa.an W ,6 .6
/ (2) mitered to conform ,6
to efaae
8
eX36' x 22' �~ ' (3) Projecting 4
6 3
0 5
aq w 5 .5 .5
N % / To use scale (2) or UI Project s
29,1 119' 3 nor leo nto llr to .,oie III, then
% u a straight inclined line through
D And 0 scabs, or r...... as
25' A 16' 2 Illustrated.
.4 4 .4
1.0
22' 113' .6
.8 0
.6 .35 .i5
.35
.5
*ADDITIONAL SIZES NOT DIMENSIONED ARE HEADWATER DEPTH FOR
LISTED IN FABRICATOR'S CATALOG C. M. PIPE -ARCH CULVERTS
BUREAU OF PUBLIC ROADS JAN 1963 WITH INLET CONTROL
S—:
HYDROLOGY REPORT
ION
TRACT NO. 21765
Prepared for:
KAISER DEVELOPMENT COMPANY
w) d(;aA
JAN 12 1988
RIVERSIDE COUNTY ROAD
11 gRVEY DEPARWEAE IT
Prepared by:
`FZober7`Be7q.W21ham9Trost 6&associates
PROFESSIONAL ENGINEERS. PEANNE RS &SURVEYORS
PO ROY1P]M• IA123AL]ONTP VARNNAY IIIVINE,ULIFORNLL92718
P1q.121WS
Contact Person: Dale Kron
JN 23687Qao(
0
December 21, 1987
(W004[
Q
OF CA1,0P
TRACT NO. 21765 HYDROLOGY
The drainage area encompassed by this Hydrology Report was included as an
offsite tributary drainage area in the Hydrology -Hydraulics Report
prepared for Tract No. 20882-1. The final design of this project has
produced slightly modified drainage areas, time of concentrations and
resulting Q's draining to C.B. No.'s 43 and 44, which were designed and
will be constructed as a part of Tract No. 20882-1. The originally
calculated Q's and the presently calculated Q's draining to those C.B.'s
are tabulated below along with the Q draining to C.B. No. 40 which will
remain the same.
Tract No. 20882-1
Hydrology Report
C.B. No. 40 Q10=14.0 cfs Qi=12.5 cfs
Qc/o=1.5 cfs
Q100-21.9 cfs Qi=14.5 cfs
Qc/o 7.4 cfs
C.B. No. 43 Q10=26.6 cfs Qi=20.0 cfs
Qc/0-6.6 cfs
Q100=41.3cfs Qi=24.0 cfs
Qc/0-17.3 cfs
C.B. No. 44 Q10=12.3 cfs
Sump Q100=38.7 cfs
Tract No. 21765
Hydrology Report
Same
Q10=23.9 cfs Qi=18.0 cfs
Qc/0=5.9 cfs
Q100-37.8 cfs Qi=21.5 cfs
Qc/o 16.3 cfs
Q10=14.1 cfs
Q100-34.5 cfs
From observation of the above tabulation it can be seen that the
hydraulics of the storm drain system designed for Tract 20882-1 will not
be affected by the new Q's calculated for Tract 21765. Therefore, no
additional hydraulic calculations are included in this report.
�tibdtcBeir�,�lliam°FYbtst(,�.�` ssceiales
PROFESSIONAL ENGINE ERS. MAN NE RS 6 SURVEYORS
PO RO.IB)i9. 1,1$]/�L.OM P1R1(W/.Y IRVINE CJ.l1f ORNIIIF}IIE
FACILITY NO B NAME 7RA�L_1�°.'s .17����i moi`' _ Calculated by Q, V,, Date '1 13-27
DRPit. TC STrc)'L DP.a) 1K� 3" ^ oti' - ^'�n �ifl- -c pig^_ -I Checked by Date
oncentration Soil Land tt }c � T o DischargeicfFlowp h Slope V Hydraulics and
'omt Description No Group Use mir. min in/hr n A Length ft /ft ft /sec Notes
—4
O
SOL-01`IA WPY
10,2
10,21
2.0
1,0,13
gp
9.0
L_q�
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315
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1001-331
` ObOdIIt/`pB/d1141"AlLem`FF1}1b,sMNE Mf fOsNMA"/10
T,0112 ]O•a
FACILITY NO 9 NAME =AC 1 Z17(4� __CO2. �, -�^�
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Checked Date
M
M
Concentration
point Description
oLouA �i, r
Soil
Group
Land
Use
min
r
°0,13m
t
in/hr
o
^
Discharge
Flowfh
L ny
-=9
Slope
It/ft
_ '
V
ft /sec
Hydraulics and
Notes
rTi 2 A
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S
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r
n
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0
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=3D
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0 1
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I
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AREP=4.5
G.B.#44
e -lo
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�
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34L
101-331
a
7:
0
n
Zoning Area: Rancho California
Supervisorial District: First
E.A. Number: 30942
Regional Team No. One
1. Applicant:
2. Engineer:
3. Location:
TENTATIVE TRACT NO. 21765 Amid. 1
Planning Commission: 3-18-87
Continued From: 2-18-87 6 1-21-87
Agenda Item No.: 15
RIVERSIDE CDUNTT PLANNING DEPARTMENT
Staff Report
4. Existing Zoning:
5. Surrounding Zoning:
6. Existing Land Use:
7. Surrounding Land Uses:
8. Comprehensive General Plan
Elements:
9. Land Division Data:
10. Agency Reconrendations
11. Letters:
12. Sphere of Influence:
ANALYSIS:
Kaiser Development
Robert • Bein, Willian Frost and
Associates
North of South General Kearney Road and
south of Solano Way and west of
Margarita Road
R -A -la R-1, R-2, R-3-3,000 and C -1/C -P
Vacant
Vacant, estate lot residential, single
family residential, multiple family
residential, school and church site
LAND USE: Category II
DENSITY: 2-8 dwelling units per acre
TOTAL ACREAGE: 11.8
TOTAL LOTS: 15
DU PER ACRE: 1 dwelling unit per .78
acres
PROPOSED MIN. LOT SIZE: .5 acres
See letter dated:
ROAD: 3-18-87
HEALTH: 9-16-86
FLOOD: 9-16-86
FIRE: 9-12-8G
LAND USE: 9-16-8G
WATER: Rancho California Water,
8-28-86
OTHER: Mt. Palonar: 0-28-36
OPPOSING/SUPPORTING: None as of this
writing
Not within a city sphere
The applicant is proposing a 15 lot residential subdivision on an 11.8 acre
site located north of South General Kearny Road, south of Solano Way. and west
of Margarita Road, in the Rancho California Zoning Area. Tentative Tract No.
21765 Amendment No. 1 is a Schedule B subdivision with a Minimum lot size of .5
acres. Tract No. 21765 Amendnent No. 1 will incorporate a 10 foot wide
pedestrian easement that begins at the terminus of street B through to Via,
Arboleda Street.
i
0
TENTATIVE TRACT NO. 21765, Amd. No. 1
Staff Report
Page 2
Area Development and Zoning:
Presently the subject site is vacant. Land uses to the immediate east consist
of an estate lot subdivision with a minimum lot size of one half acre. The
majority of the subdivision has been built out. The Margarita Village Specific
Plan, Specific Plan 199, is located further east of the subject site and east
of Margarita Road. Specific Plan No. 199 was adopted by the Riverside County
Board of Supervisors on July 22, 1986 and was approved for various land uses
including a variety of residential, recreational, open space and public
facilities land uses. Properties to the immediate north are presently vacant.
However, Tract No. 20882 has been approved over the site for 223 residential
lots on 79.3 acres with a 7,200 square foot minimum lot size. The lots created
within Tract No. 20882 which backs up against the subject property are 14,000±
square feet in size. This situation provides a good transition between the one
half acre lots proposed within Tentative Tract No. 21765 Amendment No. 1 and
the 7,200 square foot lots throughout the balance of Tract No. 20882. Land
uses further north consist of one half acre and larger estate lots within the
Meadow View subdivisions. Land uses to the immediate west of the site consist
of additional properties within Tract No. 20882 with several units in various
stages of construction. Lots within Tract No. 20882 backing up to the proposed
street "A" are larger than the typical lots developed under the R-1 standards.
This situation, in combination with the proposed 66 foot wide street "A" will
provide a transition between the half acre lots within Tentative Tract No.
21765 Amendment No. 1 and the 7,200 square foot lots approved within Tract No.
20882. Other land uses further west of the site include vacant properties and
single family residential.
South of the site and South General Kearney Road is the subject of Tract No.
20735. Grading is currently in progress over this portion of the development.
Tract No. 21735 is an R-1 and R-2 subdivision approved for 429 residential lots
on 268 acres. South General Kearney Road has a 110 foot full width right of
way which will create a transition between the single family residential lots
within Tract No. 20735 and the one half acre lots proposed within Tract No.
21765 Amendment No. 1. Other land uses southerly of site and South General
Kearney Road include multiple family dwellings, a school site and a church
site.
Zoning over the subject site is R -A-1,.
R-3, C -1/C -P, A-2-20, R -R and R-2.
GENERAL PLAN
Surrounding zoning includes R-A-�, R-1,
The project site is located within "Areas Not Designated as Open Space" on the
Open Space and Conservation Map of the Riverside County General Plan. In
addition the project is located within the Rancho California Subarea of the.
Southwest Territory Land Use Planning Area.
• TENTATIVE TRACT NO. 21765, Amd. No. 1
Staff Report
Page 3
The Rancho California subarea policies state that future land uses within this
area should be predominately Category I and Category II land uses with major
commercial and Industrial land uses located within the I-15 corridor.
Tentative Tract No. 21765 Amendment No. 1 proposes 14 lots on 11.8 acres which
yields a density of 1 dwelling unit per .78 acres. In terms of density the
projects reflects a category III (rural) land use. However, the subject site
and surrounding area in terms of available infrastructure and surrounding land
uses more accurately reflect the Category II (urban) land use designation.
Category II land use policies state that the building intensity of residential
projects should be determined by existing and approved land use patterns,
available infrastructure and environmental constraints which effect the site.
In addition Category II land use areas should provide a broad mix of land uses
and housing opportunities. It is staff's opinion that while the proposed
density falls within the density range for Category III land uses, the project
is consistent with the Category II designation policies based on the following:
The project is consistent with the existing and approved land use patterns,
water and sewer are available to the subject site, the project design is
responsive to environmental constraints, mainly slopes and the proposed lot
• sizes add to the housing and land use mix in the area. Therefore the proposed
project is consistent with the Rancho California subarea policies which
recognize Category I and Category II land uses as appropriate in the area.
ENVIRONMENTAL ASSESSMENT:
The subject site does not fall within Specific- Plan No 199 (Margarita
Village). However, the project is located within- EIR No.� 202 prepared in
conjunction with Specific Plan No. 199. All environmental issues were
adequately addressed in EIR No. 202 and no new and/or unevaluated issues are
anticipated per the development of Tract No. 21765 Amendment No. 1. Therefore
a negative declaration can be prepared for this project.
Based on the foregoing, the proposed project is consistent with surrounding
area development, the Rancho California/Temecula subarea policies, and the
various Category II land use policies within the Riverside County Comprehensive
General Plan. All environmental concerns will be mitigated through the
conditions of approval and project design.
FINDINGS•
1. The applicant is proposing to subdivide an 11.8 acre site into 15 lots
with a minimum lot size of .5 acres.
2. One half acre and larger lots exist at the projects eastern boundary.
. 3. Tract No. 20882 is located to the immediate north and west of the site and
was approved for 223 lots 79.3 acres with a minimum lot size of 7,200
square feet. Several units are under construction.
TENTATIVE TRACT NO. 21765, Amd. No. 1
Staff Report.
Page 4
4. The design of Tract No. 20882 and the present proposed, Tract No. 21765
Amendment No. 1, will provide a land use transition.
5. Single family, multiple family and vacant lands are the primary land uses
south and southeast of the site.
6. Surrounding zoning is primarily R-1, R-3, R-3-3,000 and R-2 west and south
of the site and R-A-;fi north and east of the site.
7. The initial study conducted for Environmental Assessment No. 30942 has
indicated that the project will create no significant adverse impacts upon
the environment.
CONCLUSIONS:
1. The project is consistent with the Category II land use designatton
requirements.
2. The project is consistent with the Rancho California -Temecula subarea
. policies.
3. The project meets the applicable requirements of Ordinance 340U and
Ordinance 460.
4. The proposed project is compatible with area development, both existing
and approved.
5. All environmental concerns will be mitigated through conditions of
approval and project design.
6. The project is located within the Rancho -Temecula subarea of the Southwest
Territory Land Use Planning Area. Residential land uses within the
Rancho -California -Temecula Subarea will generally be Category I and
Category II.
7. In terms of density the proposed project meets the requirements for the
Category II land use designation.
8. In terms of area development and available infrastructure the subject
site meets the requirements for the Category II land use designations.
` • TENTATIVE TRACT NO. 21765, Amd. No. 1
Staff Report
Page 5
RECOMMENDATIONS:
Based on the findings and conclusions incorporated in the staff report, staff
recommends:
ADOPTION of the Negative Declaration for Environmental Assessment No. 30942
asb�e upon the conclusion that the proposed project will not have a significant
effect on the environment; and,
APPROVAL of Tentative Tract No. 21765 Amendment No. 1 subject to the attached
conditions of approval and in accordance with Exhibit A.
FURTHER PLANNING CONSIDERATIONS: February 18, 1987
Tentative Tract No. 21765, Amendent No. 1 was continued at the applicants
request from the January 21, 1987 Planning Commission hearing until the
February 18, 1987 Planning Commission hearing.
The applicant has requested an additional continuance in order to address some
unspecified issues with the Meadow View Home Owners' Association of which the
. subject tract is located within.
Therefore, staff recommends a continuance to .the March 18, 1987 Planning
Commission hearing.
DAJ:me
1-14-87
DAJ:aea
2-09-87
0
0
9
TENTATIVE TRACT NO. 21765, Amd. No. 1
Staff Report
Page 6
FURTHER PLANNING CONSIDERATIONS:
March 18, 1987
Tentative Tract No. 21765, Amendment No. 1 was continued at the applicant's
request from the February 18, 1987 Planning Comnission Hearing until the March
18, 1987 Planning Commission Hearing.
The applicant had requested an additional continuance in order to address some
unspecified issues with the Meadow View Homeowner's Association of which the
subject tract is located.
To date, Staff has not received verification that the unspecified issues have
been resolved. However, Staff is prepared to make a recommendation at this
time.
Therefore, based on the findings and conclusions incorporated in the staff
report, Staff recommends:
ADOPTION of the Negative Declaration for Environmental Assessment No. 30042
based on the conclusion that the proposed project will not have a significant
effect on the environnent; and,
APPROVAL of Tentative Tract No. 21765 Amendment No. 1, subject to the attached
conditions of approval and in accordance with Exhibit A.
DAJ:ms
03-04-67
11
:giva3iDE coun y
?Unnin
)ATE STAMP c ��?anmm:
. .
REQUEST FOR EXTENSION OF TIME
'lease complete two (2) copies of this application form. The appropriate fee to process
:his request,is listed on the current fee schedule.
all approvals of time extensions must be consistent with the pertinent elements of the
Riverside County General Plan, and must conform to either the currently applicable schedule
if improvements specified by the Riverside County Land Division Ordinance for land divisions,
)r the Riverside County Land Use Ordinance for Variances, Conditional Use Permits, and
'ublic Use Permits.
CASE N0: Tract RK)(1 1 Map 21765 lar/CUP/PUP
ASSESSOR'S PARCEL NO(s) 921-360-001
EXTENSION REQUEST: First X
Second Third
NOTE: Only Land Divisions may obtain a second or third extension of time.
Applicant's Name Robert Bein, William Frost & Associates
Mong Address 28765 Single Oak Drive, Suite 250
Rancho California CA 92390 ' Phone (714) 676-8042
Signature
Owner's Name Gatewa-Meadowview Associates LTD
Mailing Address 2385 Camino Vida Robel #110
.._._. _1_J rn h9hilf2
Phone (619) 931-8181
Signa
Supervisorial Distric
Zoning District/Area_
Initial Approval
First Extension
Second Extension
Third Extension
OFFICE USE ONLY
Hearing Dates: Planning Commission
Board of Supervisors
Request Denied
to Approved
to Approved
to Approved
4 46-209 OASIS STREET, ROOM 304
080 LEMON STREET. 9'" FLOOR
INDIO, CALIFORNIA 92201
RIVERSIDE, CALIFORNIA 92501 ;3657 (619) 342.8277
(714)787.6181