HomeMy WebLinkAbout3190; Rancho Santa Fe Rd Improvements Water Report; Rancho Santa Fe Rd Improvements Water Report; 1990-10-25WATER REPORT
RANCHO SANTA FE ROAO IMPROVEMENTS
ASSESSMENT DISTRICT 90-01
VALLECITOS WATER DISTRICT
CARLSBAD, CALIFORNIA
OCTOBER 25, 1990
PREPARED FOR:
FIELDSTONE/LA COSTA ASSOCIATES LIMITED PARTNERSHIP
PREPARED BY:
PROJECT DESIGN CONSULTANTS
1010 SECOND AVENUE, SUITE 500
AN DIEGO, CALIFORNIA 92101
(619) 235-6471
FOR l8t PLAN CHECK SUBMITTAL
Brad D. Smith, P.E. RCE 46221
Registration Expires: 12/31/90
PREPARED BY: T.W.
CHECKED BY: K.K. K**^
TABLE OF CONTENTS
Page
Title Page . 1
Table of Contents 2
Introduction 3
Description of Study Area 3
Existing Water Distribution System 5
Proposed Water Distribution System 5
Analysis and Results 6
Conclusion 8
LIST OF FIGURES AND TABLES
Figure 1 - Project Location Map 4
Figure 2 - Exhibit 'B' - Domestic Water Main .... 10
Figure 3 - Table of Recommend Unit Water
Flows - Vallecitos Water District .... 11
Figure 4 - Schematic Drawing 12
ATTACHMENTS
Exhibit 'A' - Existing Utilities Exhibit
Proposed Water and Relocations Connection
INTRODUCTION
The purpose of this report is to: Determine the size of the water
distribution main recjuired to be installed in the proposed
realignment of Rancho Santa Fe Road, within the Vallecitos Water
District jurisdiction, as per the City of Carlsbad and Vallecitos
Water District Standards. The proposed extension and size of the
municipal water main was based on the design criteria utilized by
the Vallecitos Water District for water facilities and the proposed
land uses for adjacent property designated in the General Plan
Amendment prepared by Project Design Consultants in conjunction
with the Rancho Santa Fe Road Environmental Impact Report.
Construction of this water distribution system is in conjunction
with construction for the widening and realignment of Rancho Santa
Fe Road, between La Costa Avenue and Melrose Avenue in the City of
Carlsbad, and will provide potable water for developable property
adjacent to the Rancho Santa Fe Road Alignment. To show the
proposed relocation of existing water distribution lines in the
area of Melrose Avenue and Rancho Santa Fe Road.
DESCRIPTION OF STUDY AREA
Rancho Santa Fe Road is generally a north-south road which links
San Marcos to Encinitas. The section of Rancho Santa Fe Road
designated for improvement originates at the Rancho Santa Fe Road
intersection with La Costa Avenue and north to the Melrose Avenue
intersection across San Marcos Creek. Refer to Figure 1, page 4,
for a project location map.
Melrose Drive
La Costa
Meadows Drive
W^TEK rytsrx/cr
Questhaven Road
PROJECT LOCATION MAP
FIGURE 1
ProjectDesign Consultants
T Planning and EnglnttHng
1010 Second Avenue. Suile SOO, San Diega CA 91101
6I9J3S-6471 FAX2J4 0349
4-
J.//. 738.20
II
EXISTING WATER DISTRIBUTION SYSTEM
Two large existing water mains are located within the project area
and will be affected by construction of the proposed Rancho Santa
Fe Road realignment.
A 14-inch main originating at the Meadowlark tanks (see Figure 2),
approximately 3,000 feet northeast of the Melrose Avenue/Rancho
Santa Fe Road intersection, runs south within the existing Rancho
Santa Fe Road right-of-way alignment and is connected to an
existing pressure-reducing station, located approximately 2 00 feet
south of the intersection of La Costa Meadows Drive and Rancho
Santa Fe Road.
A 20-inch main exiting from the previously mentioned pressure-
reducing station runs north within the Rancho Santa Fe Road right-
of-way and within the Melrose Avenue right-of-way to the
intersection of Melrose Avenue and Alga Road. This 2 0-inch main
is important because three separate agencies have an interest in
this line, the Vallecitos Water District, the Olivenhain Water
District, and the Costa Real Water District, and they will be
involved with any proposed construction associated with the 2 0-inch
main.
PROPOSED WATER DISTRIBUTION SYSTEM
Approximately 3,700 lineal feet of proposed water main will be
installed within the right-of-way of the proposed Rancho Santa Fe
Road alignment. The proposed main will be connected to the
existing 14-inch ACP water main approximately 14 0 feet north of La
Costa Meadows Drive. Refer to Exhibit 'B', page 10, which shows
the alignment of the proposed water main. The first +2,000 lineal
feet of water main will be 14-inches in diameter. This 14-inch
line will have sufficient capacity for fire protection of
developable property adjacent to Rancho Santa Fe Road. The
remaining +1,700 lineal feet of proposed water mains, stretching
to the Olivenhain Water District boundary, will be 12-inches in
diameter. A connection to a 12-inch water main owned by the
Olivenhain Municipal Water District is proposed at the boundary
between both districts. This connection will be valved and closed.
The connection allows for emergency supply in the event that there
is a supply problem north of San Marcos Creek.
The existing 20-inch water main will be relocated within the right-
of-way of Rancho Santa Fe Road. Refer to Exhibit 'A', which shows
the existing utilities to be abandoned and the proposed relocation
within the proposed right-of-way.
ANALYSIS AND RESULTS
Analysis and design of the proposed extension of the municipal
water distribution was based on the Vallecitos Water District
design criteria; and a proposed land uses for adjacent property,
prepared by Project Design Consultants. Refer to Exhibit 'B' for
a portion of the preliminary land use exhibit prepared by Project
Design Consultants.
DESIGN CRITERIA;
1. Vallecitos Water District - Design Recjuirements
a. Design Flow - The design flow used for calculation
purposes was peak day demand plus fire flow demand.
b. Service Pressures
1. Minimum desirable pressure: 40 psi.
2. Minimum allowable pressure during fire event:
20 psi.
3. Maximum desirable pressure: 125 psi.
4. Maximum allowable pressure: 150 psi.
c. Water Distribution Svstem
1. Maximum velocity of 5 feet per second at peak day
demand plus fire flow demand.
2. Maximum velocity of 8 feet per second at peak hour
demands.
3. Maximum allowable head loss of 10 feet per 1,000
feet of pipeline.
4. Maximum desirable head loss of 5 feet per 1,000 feet
of pipeline.
5. C factor =120 for head loss calculations.
Calculations were performed using the KYPipe Pipe Network
analysis program developed by Dr. Don Wood of the University
of Kentucky. Refer to pages 12-15, for demand calculations
and hydraulic results. This program was utilized by the
Vallecitos Water District to analyze their existing water
distribution system. Refer to Figure 4, page 12 for a
schematic drawing showing the proposed 14" extension of
municipal water main.
CONCLUSION
Conclusion from this study that the proposed extension of the
municipal water distribution system, as designed, satisfactorily
meets the standards and rec^uirements for the Vallecitos Water
District and the City of Carlsbad for peak day demand and future
fire flow demand. The installation and relocation of water
facilities presented in this report should be performed in
conjunction with the construction of the realignment of Rancho
Santa Fe Road, in order to provide potable water service to
adjacent developable property and prevent future demolition of
Rancho Santa Fe Road.
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''mFQSW CONMtCTIOM TO
aisi)4;"Acp miff? MAIN PROPOSED LAND USE •--^"^^^- r-'^rM
DESIGNATIONS / PROPOSED •>k$^,^'MW'^'' ff^
DOMESTIC WATER MAIN v'XS'^ll^^^o.o.J^ '
EXHIBIT "B" ' 1/ ^'' '^'-''^' ' ^'^
TREATMENT {
PLANT • ^ ' ^'
200 400 800
NAL
V; .:-
17:3 ;AC:x1,0 DU/AC
•, \
FUTURE WATER MAIN ^ ^
12" PIPE , L'^t ZOOO
A'"
pmmmm-^:ho
7 /iii^^^^^^iPRO POSED 12"
X
•'••••••{•<
% VALLECITOS \.\
WAT£^ DISTJ^/CT
EMERGENCY '
CONNECTIONr
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o
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Project Design Corisidtcints
TABLE 4-1
\WftTERxDUrYjrFACrORS
Land Uae Category
Measured Unit
Water Demands
(gpd/ac)
Recortmendod Unit
Water Deanonds
(gpd/ac)
1 - Hillside Residential (0.05-0.25 du/ac)
2 - Rural Residential (0.125-1.0 du/ac)
3 - Residential (1-2 du/ac)
4 - Residential (2-4 du/ac)
^5=Si ResidentiaKX4^ du/^
6 - Residential (4-8 du/ac)
7 - Residential (8-12 du/ac)
8 - Residential (12-15 du/ac)
9 - Residential (15-20 du/ac)
10- Residential (20-30 du/ac)
11- Inteiisive Ag./Res. (0.125-0.5)
12- Agricultural/Res. (0.125-1.0)
13- Ccmnercial
14- Office Professional
15- Light Industrial
16~ Industrial
17- Schools & Public Facilities
18- Palomar College
19- San Marcos Stats University
20- Parks
21- Solid Waste Management
22- _Open Space
778(1)
1,517
1,585
3,684
3,772
1,850
778(1)
1,123
1,370
1,045
773(2)
2,187(3)
1,135
1,000
1,000
1,500
1,750
moo9
2,000
2,250
3,750
3,750
.4,000
2,000
1,000
1,250
1,500
1.50j
2,000
1,250
2,250
2,250
1,250
-0-
-0-
/
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in"
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= ZJO^ 00^ f/='^
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3
BEST ORIGINAL
FLGWRATE i3 £XFft£53ED IN uFM AND PR£5SUF:E IN FSiG
A ilitlHAKV OF THE ORIGINAL DATA FOLLOWS
PIPE NO. NODE NOS. LEhtGTH LIAPiETEK, KGUGHNESS HlriOR LOSS K FIXED GRADE
l.l-LLi.' i
j 1 ESOO.O 14.0 iOO.O .00
2 EOOO.O i4.0 iOO.O .00
t 0 dO'-A). 0 14.0 IcO.O .00
4 3 4 2000 i 0 12,0 i£0.0 .oO
5 i e J 1700.0 id.O icO.O .00
f//sr. riP6
JUNCTION NUMBER DEMAND
l4b.OO
215.00
205.00
aow.oo
.00
ELEVATION CONNECTING FIFES
410.00 1 c
336.00 c 3
415.00 3 4 5
•Jjy.lA' H
•JcO.'-.iO J
OUTPUT SELECTION; ALL RESULTS ARE QUTPUl EACH PERiGL
THIS sVSTEH HAS 5 FlrcS WITH 5 juiCTluNS , 0 LuGFS AND i FGNS
THE RESULTb ARE ODTAINED AFTER £ TRIALS WITH AN ACCURACY
RANCHO SANTA FE ROAD
VALLECITOS WATER DISTRICT
.Oi^iOOO
•IFE NO. NODE HQS. FLOWRATE t€AD LOSS PUftP ^€AD MINOfi LOSS 'VELOCITY HL/l^XiO
1 0 1 EbSi.OO 34.45 .00 .00 5.54 U.ob
2 1 2 £510.iJO 21.*) .00 .00 5.23 10.70
3 2 3 EE^S.OO 1E.9S .00 .00 4.76 b.47
4 3 4 20i>3.i)0 21.23 .i;)0 5.D7 10.&2
5 3 5 .00 .00 .00 .00 .00
JUNCTION NUMBER DEMAI4D GRA££ LINE ELEVATION PRESSURE
1 I4b.00 780.55 410.iX' 160.57
2 215.00 75'3.15 538.00 152.30
d £95.0(1 74o.22 415.y*:-143.53
4 2000.00 :c4.:^ 550.00 .';>75i;83'
.00 746.cc 520.0(' mM
•HE l£T SYSTEH DEMAND = EOSO-'-H)
SUHCiARV OF INFLOWS IT I AND OUTrLt-wS-.-tuii'l rlsED GRAL-E liuut
LGWRATE 15 EXFRE55ED IN uF'H AND PRESSURE IN FSId bEST ORIGINAL z^oo ^pm /^to
A SUHftARV OF THE ORIGINAL DATA FOLLOWS
iPEET' iINCHES;
i 0 i 2900.0 14.0 100.0
2 1 2000.0 14.1. iOO.O
c 2000.0 14.0 120.0
4 3 4 2000.0 12.0 120. (J
5 i if00,0 12.0 120.0
PIPE NO. NODE NOS. LEi^JGTH DiAiltTER ROUGHNESS flltCR LOSS K ri*ED GRADE
..jy dii.ou
.00
.00
.00
,00
JUNCTION NUMBER DEMAND ELEVATION CONNECTU* PIPES
1 146.00 410.00 1 2
£ 215.00 333.00 £ 5
3 295.00 415.00 3 4 5
4 ''S5(K).0C) 550.00 4
J .!JO 520.00 5
OUTPUT SELECTION; ALL RESULTS ARE OUTPUT EACH PERIOD
inIS SYSTEM HAS 5 PIPES WITH 5 JUNCT IGf'IS , 0 LOCPS AND 1 FGNS
THE RESULTS ARE OBTAINED AFTER 2 TRIALS WITH AN ACCURACY - .00000
RANCHO SANTA FE ROAD
VALLECITOS WATER DISTRICT
PIPE NO. NODE NOS. FLOWRATE t£AD LOSS PW fCAD MINOR LOSS VELKITY HL/lOO*)
1 0 1 3156.00 47.42 .00 .00 6.53 16.35
2 I 2 3010.00 29.95 .00 .00 0.27 14.93
3 2 3 £795.00 15.63 .00 .0(j 5.32 9.31
4 3 4 2500.00 32.10 .00 .00 7.09 16.05
5 • 3 5 .00 .00 .00 .00 .00 .00
JUNCl ION NUMBEF; DEMAND GRADE LINE ELEVATION PRESSURE
1 146 .iX' 76/.55 410.00 154.95
2 215.00 '37.63 SC'S.OO 175.17
3 E'95.00 7i9.yO 415.00 131.73
4 250<j .00 000.90 550 .:X 59.32
J 719.00 520. iX 36.23
IHE NET SYSTLM DEMAND - 3156.00
SUi'IMAftY uf IMFLCWSt'i AND uUTr'Luiwi-} PRCM rlXtD GRADE iJOOc: '"' . - • ^
-LGWRATE 15 EAFPESSED IN GPM AND PRESSURE IN PSIG
A SUilMARV Or THE ORIGINAL DATA FOLLOWS
BEST ORIGIIMAL ^^^^ ipem^^o f
y)00 jpyn ^/>e
PIPE NO. NODE NGS. LENGTH DIAMETER K0UGHNE35 rllNOR LGsS FIXED'GRADE
(FEET) (INCHES'
315.00 1 •9 2900.0 14.0 iOO.O .Oij
c 1 £ 2000.0 14.0 100.0 .00
0 £ d'.-'OO .0 14.J icO .0 .•}'•}
4 ij 4 2000.0 12.0 12i.'.0
I70'j.0 12.0 120.y . I'O
JUNCTION NUMBER DEMAND ELEVAriON CONNECTING-FiFES
1 i4c.OO 4iOAiO 1 2
t Lij.UO JsS.iJu c J
3 295.00 4i5.C'0 ,3 4 J
4 3000iOO« 550.0V 4
J .'j'-i 520.00 5
OUTPUT SELECTION: ALL RESULTS ARE GUiPUT EACH PEPiOD
THIS SVbTtM HAS 5 PIPES WITH 5 JUNCTIONS . 0 LOOPS AfC 1 FGNS
THE RESULTS ARE OBTAINED AFTER 2 TRIALS WITH AN ftCURACV = .OtXOO
RAfJCHO SANTA FE ROAD
VALLECITOS WATER DISTRICT '
PIPE NO. NODE NOS. FLOWRATE J€AD LOSS FW f£AD MINOR LOSS VELOCITY HL/li>X
7.62 21.47
7.31 19.91
O.Ci7 ic.Oi
3.51 22.-50
.iX .Ol'
1 0 1 3656.00 .00 .iX
2 i £ 3510. W 39.83 .00 .00
2 •3295.00 25.27 .00 .00
4 5 4 SOifJ .'jOi 45.00 .:X .•JO
5 3 5 .00 .00
JUNCTION NUMBER DEMAND GRADE LINE ELEVATION PRESSURE
1 146.00 752.74 410.00 143.52
2 215.00 712.92 5j6.-Ai 102.47
£95.00 o67.66 415.0V 113.15
4 3000.00 642.66 550. oO 40.15
tr .01. 657.66 52v.00 72.DJ
THE NET SYSTEM DEMAND = 3656 .00
SUMMARY OF INFLOWS! T/ Aiuj uoirLuWSi-; FRON FIXED GRADE NODES
FLOWRATE IS EXPRESSED IN GPh AND PRESSURE IN FSI
A SUMMARY OP THE ORIGINAL DATA FOLLOWS
STATIC Thc^uOE
•Ir'E NO. MODE NOS. LENGTH DIAMETER ROUGHNESS • MINOR LOSS
iFEET' (INCHES;
2000.0 14.0
2000.0 i4,0
200U.0 12.0
1700.U L2.0
IvO.O
lOO.O
120.0
120.0
120.0
.00
rlXED GRADE
515.00
JUNCTION NUMBER DEMAND
1 .00
£ .00
3 .00
4 .00
5 .oO
ELEVATION CONNtCTING PIPES
410.00
33E.00
4l5.oO
550.00
520. oO
1 d
£ 3
5 4
OUTPUT SELECTION; ALL RESULTS ARE OUTPUT EACH PERIUD
THIS SYSTEM HAS 5 PIPES WITH 5 JUNCTIONS . o LOOPS AND i FGNS
RANCHO SANTA FE ROAD
VALLECITUS WATER DISTRICT
-IPE NO. INGDE NOS. rLuWRAlE HEAD LOSS FUliP' HEA£i MINGK LOSS'VELOCITY HL/ioO
1 0 1 .00 .00 .00 .00 ,00 ,0v
J i
C 1 c .00 .*X ,00 ,00 ,00
•i 2 •a ,00 .00 .00 .00 .00 .oO
4 3 4 .00 .00 .00 .-X ,00 .00
5 3 .00 .00 .00 .00 ,00 .00
UNCTION NUMBER DEMAND GRADE LINE ELEVATION PRESSURE
1 .00 315.00 410.00 175:50'
c .00 315.00 33S.OI)
3 .iX 315.Ov 415.00
. 4 .00 315.00 550.00'
5 .00 315.00 520.00' flg7;83
THE NET SYSTEM DEMAND = .00
SUMMARY OF iNFLOWS't) AND uUl'FLOWSi-.' FROM FIXED GRADE NODES
PIPE NUMBER
1
FLOWRATE
.00