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I AECOMWater
WATER SYSTEM ANALYSIS
FOR
LA COSTA TOWN SQUARE
WITHIN THE
OLIVENHAIN MUNICIPAL
WATER DISTRICT
January 2009
20141.02
AECOM
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BOYLE I AECOM I
La Costa Town Square
Water System Analysis
Olivenhain Municipal Water District
General Manager
Engineering Manager
AECOM
Project Manager
Proj ect Engineer
Reviewed by:
Assessor Parcel Nos.
OMWD W.O. No.
20141.02
January 2009
7807 Convoy Court, Suite 200
Kimberly A. Thorner
George R. Briest, PE
Alex L. Bucher, PE
ReE 66711, Exp. 09/30/10
Tranh Huynh, EIT
Anders K. Egense, PE
223-050-70; 223-060-32
559520
San Diego, CA 92111
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BOYLE I AECOM
La Costa Town Squ.are
Water System Analysis
Olivenhain Municipal Water District
General Manager
Engineering Manager
AECOM
Project Manager
Proj ect Engineer
Reviewed by:
Assessor Parcel Nos.
OMWD w.o. No.
20141.02
January 2009
7807 Convoy Court, Suite 200
Kimberly A. Thorner
George R. Briest, PE
Alex L. Bucher, PE
ReE 66711, Exp. 09/30/10
Tranh Huynh, EIT
Anders K. Egense, PE
223-050-70; 223-060-32
559520
San Diego; CA 92111
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Table of Contents
La Costa Town Square Water System Analysis ...................................................... 1
District Statement ................................................................................................ 1
Introduction ......................................................................................................... 1
Source of Water ................................................................................................... 2
Water Demands and Design Criteria .................................................................. .3
Results and Conclusions ..................................................................................... 4
Commercial Development ........................................................................... 5
Residential Development ............................................................................. 5
Assessment District AD 96-1: ..................................................................... 8
Appendix ................................................................................................................ 1 0
Project Summary ........................................................................................ 10
Design Considerations for Water Main Construction ................................ 10
OMWD General Water System Notes .............................. : ........................ 10
OMWD Standard Legend Symbols ........................................................... 1 0
OMWD Approval Blocks .......................................................................... 1 0
OMWD Granting and Aqceptance Certificates ......................................... 10
OMWD Guidelines for Placement of Valves on Waterlines ..................... 10
BOYLE; AECOM
I I La Costa Town Square Water System
Analysis
District Statement
Introduction
This hydraulic analysis is premised upon current criteria. It is not a
representation, express or implied, that Olivenhain Municipal Water
District will furnish water at a future date. Applications for service are
governed by separate District rules and regulations, and are the subject
of separate and distinct proceedings, apart from hydraulic analysis.
All water supplied by the District is imported from the Metropolitan
Water District of Southern California via the San Diego County Water
Authority. In the event that a water shortage or a threatened water
shortage exists, the District reserves the right to restrict or terminate
future water service to customers of the District. The District has
adopted a water conservation ordinance, which is available to all
applicants upon request.
In order to provide for the efficient utilization of limited water
resources, the conversion of irrigation water demands from the potable
system to a future recycled water system shall be evaluated for all
projects and determination of feasibility shall be made by the District,
in its sole discretion.
This project encompasses the area east of Rancho Santa Fe Road and
north of La Costa Avenue as shown on Figure 1.
The project, as studied, is divided into three developments: La-Costa
Town Square Commercial, La Costa Town Square Office, and La
Costa Town Square Residential. The commercial development covers
the northwestern portion of the project site and includes
24 commercial buildings. The office development is along the
southern boundaries and consists of two office buildings with an
option to replace one of the office buildings with 20 multi-family
dwelling units. Located on the eastern portion of the proj ect site is the
residential development which consists of 64 single-family dwelling
units with lots ranging in size from 0.17 acres to 0.63 acres. The
proposed water facilities analyzed in this study are shown on Figure 2.
These water facilities were analyzed during peak hour and maximum
day plus fire flow conditions using the District's 2000 Master Plan's
hydraulic computer model (H20NET~.
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La Costa Town Square Water System Analysis
Source of Water
Information describing La Costa Town Square was obtained from
tentative maps entitled "Tentative Map for La Costa Town Square
Commercial" (sheets 1 through 10 dated October 2008)~ "Tentative
Map for La Costa Town Square Office" (sheets 1 through 4.dated
October 2008) and "Tentative Map for La Costa Town Square
Residential" (sheets 1 through 7 dated June 2008) prepared byO'Day
Consultants.
The proposed development is located within two OMWD pressure
zones. Based on the elevations of the proposed facilities, the
commercial and office developments will be served through Zone 4
while the residential development will be served through Zone 6.
Pressure Zone 4 receives water through the South East No. 1 and Main
18" Pressure Reducing Stations from Pressure Zone 7. The service
area has an operational HGL of 582 feet based on the primary pressure
reducing station valve setting. Storage is provided indirectly from the
Denk and Gaty Reservoirs in Zone 7.
Water for Pressure Zone 6 is supplied from Pressure Zone 7 through
the La Costa Vales No.3 Pressure Reducing Station. The service area
has an operational HGL of 672 feet based on the primary pressure
reducing station valve setting. Storage requirements are :met indirectly
by the Denk and Gaty Reservoirs, also in Zone 7.
The commercial development will be directly served through a
connection to a 12" pipeline in La Costa Avenue (along the
southwestern edge ofthe development) and a proposed connection
totaling approximately 70 feet starting near the northwest comer to an
18" pipeline in Rancho Santa Fe Road (Figure 2). To build the future
development, a second proposed connection for the commercial
development is required starting from the northeast comer to a 12"
pipeline located in an easement approximately 800 feet north of
Rancho Santa Fe Road (Figure 2). The alignment for this loop runs
parallel to Paseo Lupino and connects near the Main 18" Pressure
Reducing Station.
The office development will be directly served through two
connections to a 12" pipeline in La Costa Avenue along the southern
edge of the development (Figure 2).
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La Costa Town Square Water System Analysis
The residential development will be directly served through a
connection to a 12" pipeline in La Costa Avenue along the
southeastern edge of the development and a connection to the 8"
pipeline at the terminus of 8ito Lima (Figure 2).
Water Demands and Design Criteria
Estimated average annual water demands used in this analysis for the
proposed development are based on water demand factors utilized by
the Olivenhain Water District Water Master Plan dated January 2000
and are as follows:
1. 450 gallons/day/multi-family dwelling unit
(0.313 gpmldwelling unit) for all multi-family residences
within Zone 4 .
2. 2500 gallons/day/acre (1.736 gallons/minute/acre) for all
commercial and retail lots within Zone 4
3. 655 gallons/day/single family dwelling unit
(0.454 gpmldwelling unit) for all single family residences on
lots having less than 0.5 acre within Zone 6
4. 1244 gallons/day/single family dwelling unit
(0.864 gpmldwelling unit) for all single family residences on
lots 0.5 to 3.0 acre within Zone 6
Based on these demand factors, the total average annual day demand
for the project is estimated to be 661 gpm and 348gpm for Zone 4 and
Zone 6, respectively. If anticipated demands differ from those assumed
in this report, the District shall be notified immediately and re-
evaluation andlor re-analysis of the proposed water system will be
made.
The total average annual day demand for Zone 4 was calculated using
the optional 20 multi-family dwelling units in the office development.
This option represents a higher demand scenario whim compared to the
office building that the multi-family units will be replacing.
Irrigation demands for greenbelts, islands, open spaces, and other
common landscape areas will be provided with recycled water and are
not included in the analysis. The use of potable water for irrigation is
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La Costa Town Square Water System Analysis
Results and Conclusions
prohibited due to the avaiiability of recycled water along La Costa
Avenue.
Special fire flow requireJllents for the multi-level structures were not
identified by the developer and therefore, are not included as part of
this study. It should also be noted that this analysis evaluates pressure
available at the water main only, and a separate analysis should be
performed by the fire sprinkler designers to meet the requirements for
elevated, multi-level structures. If special fire flow requirements are
determined necessary by the City of Carlsbad Fire Department, the
District shall be notified immediately and re-evaluation and/or re-
analysis of the proposed water system will be made ..
The system was analyzed for peak hour and maximum day plus fire
flow demand conditions. The minimum desirable pressure during a
peak hour demand condition· is 60 psi. During a maximum day plus
fire flow demand condition, the minimum required pressure is 20 psi
in the vicinity of the fire. The desirable static pressure range is 60 to
100 psi.
As directed by the City of Carlsbad Fire Department in an letter dated
November 3, 2008, operating pressures during a fire flow demand
condition were evaluated based on a fire flow demand of 4,000 gpm
for the commercial development and 1,500 gpm for the residential
development. Fire hydrant locations for La Costa Town Square were
determined based an exhibit entitled "Fire Hydrant and DCDA Exhibit
for La Costa Town Square" (dated September 2008) prepared by
O'Day Consultants. Ifthe City of Carlsbad Fire Department
determines that an increased fire flow is required or significantly alters
the location of fire hydrants, the District must be notified immediately
and a re-analysis will be required.
An exhibit entitled "Site Plan" (sheet SDP-AS 1 dated October 2008)
prepared by Smith Consulting Architects indicate the projectwill be
phased. The buildings in the commercial development will be
constructed in Phase I while the buildings in the office development
will be constructed in separate phases. However, the proposed water
facilities for the commercial and office developments are not
interconnected and phasing will not affect the hydraulic analyses. For
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La Costa Town Square Water System Analysis
the purposes ofthis analysis, the water system was analyzed under an
ultimate system scenario.
Commercial Development
The results ofthe computer analyses under the ultimate system
indicate that with the installation of the water facilities shOWb on
Figure 2, the development can be served during a peak hour demand
condition with a minimum residual pressure greater than 60 psi, and
during a maximum day plus 4,000 gpm fire flow demand condition
with residual pressures greater than 20 psi in the vicinity ofthe fire.
Pressure Zone 4
Maximum hydraulic gradient elevation
based on pressure reducing station main
valve setting:
Elevation range within commercial
development:
Maximum static pressure range based on
primary reducing station valve setting
within commercial development:
Minimum Residual Pressures within
commercial development:
Max. day plus 4,000 gpm fire flow:
Peak hour demand:
Office Development
582feet
286-406 feet
76-128 psi
Greater than 20 psi
Approx. 76 psi
The results of the computer analyses under the ultimate system
indicate that with the installation of the water facilities shown on
Figure 2, the development can be served during a peak hour demand
condition with a minimum residual pressure greater than 60 psi, and
during a maximum day plus 4,000 gpm fire flow demand condition
with residual pressures greater than 20 psi.in the vicinity of the fire,
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La Costa Town Square Water System Analysis
Pressure Zone 4
Maximum hydraulic gradient elevation
based on pressure reducing station main
valve setting: 582 feet
Elevation range within office development: 271-295 feet
Maximum static pressure range based on
primary reducing station valve setting
within office development:
Minimum Residual Pressures within office
development:
Max. day plus 4,000 gpmfireflow:
Peak hour demand:
Residential Development
124-135 psi
Greater than 20 psi
Approx. 118 psi
The results of the computer analyses under the ultimate system
indicate that with the installation of the water facilities shown on
Figure 2, the development can be served during a peak hour demand
condition with a minimum residual pressure greater than 60 psi, and
during a maximum day plus 1,500 gpm fire flow demand condition
with residual pressures greater than 20 psi in the vicinity of the fire.
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6 BOYLE i Af:COM
La Costa Town Square Water System Analysis
Pressure Zone 6
Maximum hydraulic gradient elevation
based on pressure reducing station main
valve setting:
Elevation range within residential
development:
Maximum static pressure range based on
primary reducing station valve setting
within residential development:
Minimum Residual Pressures within
residential development:
Max. day plus 1,500 gpm fire flow:
Peak hour demand:
Required Facilities
672feet
294-382 feet
126-164 pst '
Greater than 20 psi
Approx. 106 psi
The following facilities and connections are required for this project
(see Figure 2):
Commercial Development
1. The commercial development will require a connection to a
12" pipeline on La Costa Avenue along the southwestern edge
of the development.
2. A proposed connection starting from the northeast comer to a
12" pipeline located in an easement approximately 800 feet
north of Rancho Santa Fe Road.
Office Development
1. The office development will require two connections to a 12"
pipeline in La Costa Avenue along the southern edge of the
development.
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La Costa Town Square Water System Analysis
Residential Development
1. The residential development will require a connection to a 12"
pipeline on La Costa Avenue along the southeastern eclge of
the development and a connection to an 8" pipeline located at
the terminus of Sito Lima.
Pipes located at elevations below 326 feet in Zone 6 must be rated for
service up to 200 psi.
Assessment District AD 96-1 :
This development is subject to the terms and conditions of Ordinance
No. 280 and successor ordinances of the Board of Directors of the
Olivenhain Municipal Water Di~trict establishing methods and
procedures for the collection of impact charges on properties made
necessary by the increase of density at the time of the final subdivision
map approval, a change in zoning, or other increase in water demands
in excess ofthose assessed in Assessment District 96-1. The
comparison of proposed development density in Equivalent Dwelling
Units (EDUs) to the development density assumed in the formation of
Assessment District 96-1 in Equal Equivalent Dwelling Units
(EEDUs) is shown below:
La Costa Town Square Developm~nt Density
AD 96-1
Assessor Parcel Units EEDU's No.
223-050-70 40 48.3
223-060-32 7 164
8
Proposed
Development*
Units
64
0
20**
Commercial
EDU's
66
0
14**
53
47**
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La Costa Town Square Water System Analysis
Total 47 212.3
64
84**
119
127**
* Proposed EDU's are estimated based on land use and acreage
data from the Olivenhain Water Storage Project Assessment
District No. 96-1 Volume I Final Engineer's Report Assessment
Roll, dated October 1996. The total ED Us must be verified as
construction takes place.
** Jfdeveloper opts to replace o,ne o/the office buildings in the office
development with 20 multi-family dwelling units.
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La Costa Town Square
WATER SYSTEM ANALYSIS
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LOCATION
20141.02
1
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La Costa Town Square
WATER SYSTEM ANALYSIS BOYLE AECOM
__ ....... 6 __ -
OLI'(~¥IN
Municipal Water District
FIGURE 2
ULTIMATE FACILITIES
20141.02
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Appendix
Project Summary
Design Considerations for Water Main Construction
OMWD General Water System Notes
OMWD Standard Legend Symbols
OMWD Approval Blocks
OMWD Granting and Acceptance Certificates
OMWD Guidelines for Placement of Valves on Waterlines
10 BOYLE i Ai::COM
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PROJECT: La Costa Town Square
1. GROSS ACREAGE: 73.1
2. TYPE OF DEVELOPMENT
A. RESIDENTIAL:
Lots 1ess,than 0.5 acres
Lots 0.5 to 3.0 acres
Lots greater than 3 acres
Multifamily
B. COMMERCIAL
C. SCHOOLS
D. P ARKSIREC BLDG
E. GOLF COURSE
F. ORCHARD/CROPS
G. OPEN SPACE
H. IRRIGATION
3. FIRE REQUIREMENTS:
** Option to replace 1 office w/ 20 IvIFU
AGENCY City of Carlsbad
4. PRESSURE ZONES:
Maximum HGL:
5. BENEFIT AREA:
6. PROPOSED EDUs:
7. WATER DEMANDS:
Commercial-AAD
Domestic -AAD
Irrigation -AAD
Irrigation -PEAKED
(gpm over 8 hours)
8. STATIC WATER PRESSURE:
Lot elevation range:
Based on low lot elevation:
Based on high lot elevation:
9. PRIVATE STREETS: __ Y"'-e""'s'---_
Total
EDUs
Proposed
62
4
0114**
53/47**
Number
of Units
62
2
0/20**
26/25**
FIRE SPRINKLERS REO'D
YES X
NO _____ _
;, :;, ':::,.. ,Z~ri~'41J,;~i::;,:,:::,<
582 feetl672 feet
A
119/127**
20gpm
30gpm
271-406feetl
294-382 feet
1351164 psi
76/126 psi
OMWD W.O. 559520
Meter
Size
%"
I"
1 Yz "
%"
FLOW (gpm)
Net
(pad)
Acres
December 2008
20141.02
Total
EEDUs
Assessed
212.3
4,000 gpm -Commercial
1,500 gpm -Residential
PUBLIC STREETS:_--=N-"'o'--__ EASEMENTS: __ Y~e=s __
10. DEVELOPER: La Costa Town Square, LLC ENGINEER: O'DayConsultants
11. SPECIAL CONDITIONS/FEATURES: Project requires multiple points of connections and CL 200 pipe for elevations
below 326 feet for Pressure Zone 6.
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OLIVENHAIN MUNICIPAL WATER DISTRICT
GUIDELINES FOR THE DESIGN OF
WATER AND RECYCLED WATER FACILITIES
1. The minimum acceptable thickness of ductile iron pipe shall be Class 52. Refer to
Standard Specifications for design requirements ofDI and CML&C Steel Pipe.
2. PVC pipe shall be designed in accordance with A WW A C-900, subject to
modifications by the District's Representative and the Standard Specifications.
3. Plain end pipe and high deflection couplings shall be used for all curved alignments.
The maximum total deflection per coupling is 40 •
4. Pipe lengths shorter than 9 feet will not be allowed unless authorized by District's
Representative. Bell end pipe may be used for straight alignments only.
5. Appropriate consideration should be given to the selection ofthe centerline radius for
curved streets in which waterlines are to be installed.
6. The minimum acceptable radius of curvature for ductile iron or steel pipe shall be
based on 80% of maximum deflection recommended by manufacturer for each
specific diameter and range of standard pipe lengths and subject to the approval of
District's Representative.
7. Water mains shall be located 10 feet from center line where ever possible, the
minimum acceptable distance between water mains and the back of curb shall be 5
feet.
8. Except for single or duplex family dwelling unit, a water demand summary (fixture
units or G.P.M.) for meter sizing shall be submitted during plan check for any facility
requiring water for sprinkler systems, pasture/orchard irrigation and commercial or
dwelling complexes.
9. For residential or commercial buildings requiring fire sprinkler systems, peak hour
demand pressures at the water main shall be used as the basis for design. Oversized
street services and meters should be considered relative to the flow/pressure available
and that required to operate an individual sprinkler system.
10. Potable water lines are to be positioned on the south and east sides of streets, and
reclaimed water lines on the north and west side of the street where possible.
11. Any project that is located in an area where the District serves, or plans to serve,
recycled water shall consider the use of recycled water for non-domestic usage.
Projects having irrigation demands which may be met by the use of recycled water
will include a dual water pipeline system on-site. Off-site pipeline(s) associated with
the master planned distribution system may be required at proposed road
improvements andlor existing frontage roads. The dual system(s) will be temporarily
connected with the potable water system if the recycled water source is not available
Location: H:\001\OMWD Specifications\Standard Notes\Water Design items.doc
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at the time of construction. All irrigation meters will be served from the future
recycled water system.
12. Plans shall include the "Legend Symbols Required for Subdivision Improvement
Plans" located in this section of th~ Standard Specifications.
13. The minimum acceptable grade for water mains is 0.5% .
14. All existing facilities which may affect fmal design, i.e., line crossings, line
paralleling, or proposed connections shall be field verified. Plans shall show any
facilities that are within 10ft of proposed pipelines.
Location: H:\001\OMWD Specifications\Standard Notes\Water Design items. doc
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GENERAL RECYCLED WATER SYSTEM NOTES
REQUIRED FOR SUBDIVISION IMPROVEMENT PLANS
1. The recycled water system shall conform to the rules and regulations for reclaimed and non-
potable water service of the Olivenhain Municipal Water District, Ordinance No. 175, dated
March 1989, and all subsequent amendments.
2. Recycled water works shall be constructed in accordance with the details and materials as
specified in th~ most recent edition of the Olivenhain Municipal Water District (District)
. Standard Specifications for the Construction of Water Ml;tins and Facilities, including all
amendments adopted prior to the District approval date on these plans. Contractor shall have
a copy of the OMWD Standard Specifications on the job site at all times.
3. The submission and review of all submittals (shop drawings, six sets) as required by the
OMWD Standard Specifications are to be accomplished prior to the pre-construction meeting
with the District's Inspector. .
4. Unless otherwise noted, connections to existing mains shall be made dry. The time and
duration of any shutdowns of existing mains shall be subject to approval by the District.
District shall be notified two weeks minimum in adva?-ce of any shutdown.
5. Contractor shall coordinate with District all arrangements for high-lining temporary services
prior to shutdowns. No shutdowns will be scheduled on a Monday or Friday.
6. Contractor shall review all proposed trench work with Cal/OSHA. A copy of exemption letter
or trenching permit, if required, shall be submitted to the District prior to construction.
7. No work may begin or proceed without direction of District's Inspector. Contractor shall
notify the District inspections department 48 hours prior to the beginning of work to arrange
for inspection ofthe project.
8. The Contractor must call "Dig Alert of Southern California'! to have underground service
utilities located prior to construction. This call will be made at least 48 hours in advance prior
to any work being performed in public right-of-way.
9. All existing facilities which may affect final construction, i.e., line crossings, line paralleling,
or proposed connections shall be field verified.
10. The Contractor shall furnish ~nd install per the OMWD Standard Specifications the
appropriate buried utility warning and identification tape above all public recycled water lines
including recycled water laterals located in public right-of-way.
11. Recycled water main shall be purple PVC pipe A WW A C 900, with two continuous metallic·
tape strips, stamped "Recycled Water." Strips shall be set at top of pipe and at 24" above the
pIpe.
12. Where elevations and grades are not shown on the water main profile, top of pipe profil~ is
66-inches below centerline offmish grade of street.
. Location: H:\001\OMWD Specifications\Standard Notes\Std Recycled Water Notes.doc
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13. All deflections (horizontal and vertical) shall be made by use of joint couplings with 4°
maximum deflection per coupling (2° per joint). No bending (curving) of pipe shall be
permitted.
14. Manual air releases shall be installed at all high points and blow-offs at all low points in the
water main profile. Manual air releases and blow-offs shall be located behind curb unless
otherwise approved by District's Representative.
15. Install recycled water service(s) in accordance with size(s) defined ori the drawings.
Locations of recycled water meters are subject to approval by District's Inspector. 314-inch
high letters "RW" shall be chiseled in top of existing curb or imprinted in new curb at all
recycled water service crossings.
16. Meter boxes shall not be placed within driveways or sidewalks without the District's prior
written consent.
17. Contractor to tie off all valve locations and provide written dimensions to Inspector
immediately upon installation of valves.
18. Line valves, where required at street intersections shall be located at the tee whenever
possible.
19. All design changes to the recycled water system shall be approved by the District
Representative in writing prior to construction and acceptance of the change.
20. The recycled water system shall be pressure tested in accordance with the procedures in the
OMWD Standard Specifications. The class of pipe shall be used as the designated working
pressure for testing all pipe, valves (closed) and appurtenances.
21. Contract Record Drawings must be submitted prior to fmal acceptance of work. The plans
must provide post construction verification of the location an~ elevation of pipes and
appurtenances.
22. Contractor shall guarantee all work for a period of one (1) year after the date of acceptance
for the project. Contractor shall repair or replace any or all such work, together with, any other
work which may be displaced in so doing that may prove defective in workmanship and/or
materials within the one-year period from the date of acceptance without expense whatsoever
to the District, ordinary wear and tear, unusual abuse or neglect excepted.
23. All valve box installation for buried valves in public paved street within the County of San
Diego shall adhere to the County's Regional Standard Drawings No. W-12A and W-12B for
valve well cover and valve well frame and assembly.
24. All irrigation meters shall be served with recycled water unless previously approved in
writing by the District.
Std Recycled Water Notes.doc I revl 006
LEGEND SYMBOLS REQUIRED FOR SUBD!VTSION lliPROVEMENT PLANS
LEGEND
1.
2.
11.
12.
13.
Consttuction of :water mains. size, type and class
as noted .
(PVC .. Polyvinylchloride, D. I. .. Ductile Iron,
·C.K.L. 0: C ... Cement Mortar Lined & Coated Steel)
Const:ruetion 0; valve assembly. size ~nd ty,pe as'
noted
(G.V. ~ Gate Valve, B.V ... Butterfly Valve,
P.V ... Plug Valve)
Construction of fire hydrant: ass.embly
Construction .of blow-off assembly
Construction of manual air release or air' 0: vacuum
valve assembly
Construccion of *P/O x PIO
flange valve
Construction of all PIO tee
Construction of all PIO ~ross
Construction of reducer
Construction 0; cap assembly
Construction of water servi.ce
x fl~ge tee wI.
Co~truction of water sample point
Construction of cathodic, test station
[J * FlO -Push-On or Mechanical Joint
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J4/88
8" PVC-150
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+ F.H __ B.O.() __ ..... __ _
__ M_.A: R. 0 A. &V ·_Y " __
}-------.. ~ -+-----.. ~-.--• It----.,®-
___ I Y S._.p .... ~ ___ _
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Signature Blocks Required for Subdivisioll1l
Improvement Plans
OliVENHAIN MUNICIPAL WATER DISTRICT
POTABLE WATER SYSTEM APPROVAL
(OMWD W.O.# )
Approved by: AECOM USA, Inc
District's Consulting Engineer
R.C.E. Date Job Number
Note: Signature Expires 2 Years After Date
OLIVENHAIN MUNICIPAL WATER DISTRICT
RECYCLED WATER SYSTEM APPROVAL
(OMWD W.O.# )
Approved by: AECOM USA, Inc
District's Consulting Engineer
R.C.E. Date Job Number
Note: Signature Expires 2 Years After Date
OLIVENHAIN MUNICIPAL WATER DISTRICT
SEWER SYSTEM APPROVAL
(OMWD W.O.# )
Approved by: District Representative
R.C.E. Date Job Number
Note: Signature Expires 2 Years After Date
NOTE: The above approval blocks are to be placed on the Title Sheet
and submitted to the appropriate District Representative(s) for
signature. Use the respective approval block(s) only when
applicable.
Location: H:\001\Plan Check Procedure\Signature Block.doc
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TYPICAL GRANTING AND ACCEPTANCE CERTIFICATE TO BE SHOWN ON
TITLE SHEET OF THE TRACT MAP WHEN OMWD FACILITIES ARE WITHIN
PRIVATE STREET RIGHT-OF-WAYS.
Granting Certificate:
We hereby grant to the Olivenhain Municipal Water District, a public agency, or its
successors Of assigns, an easement for water pipelines, other District facilities, and fot
all access purposes over, under, and across all private streets as shown on this Map,
subject to all terms and conditions contained in the certificate granting easements within
private streets to the Olivenhain Municipal Water District on County of San Diego Tract
No. 4413, Map No. 11372, recorded November 21, 1985, which terms and conditions
are hereby incorporated by reference.
Acceptance Certificate:
The Olivenhain Municipal Water District hereby accepts the grant of easements
described herein, including the terms and conditions contained in the certificate granting
easements within private streets granted to the Olivenhain Municipal Water District on
County of San Diego Tract No. 4413, Map No. 11372, recorded November 21, 1985.
The Olivenhain Municipal Water District consents to the recordation of this Map and has
authorized its General Manager to, sign this certificate pursuant to Board Resolution No.
87-01, adopted January 15, 1987.
Olivenhain Municipal Water District
By:_-:--_::--:-::_--=-_----:--:-:-___ _
. David C. McCollom, General Manager
Date: ____________ _
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Olivenhain Municipal Water District
Guidelines for Placement of Valves on Waterlines
Effectively immediately (6/18/03), the District has adopted a new approach to locating waterline
valves near tees for distribution system piping in subdivisions. Valve shall be attached directly to
the tee (rather than Qffset some distance from the tee). Presented below are valve and tee
configurations that shall be used for such projects. If the need arise~ for a configuration that does
not match any oftho~e shown below, the designer may submit a proposed configuration for
review. The sizes shown below are for illustration only -the plans shall include the appropriate
pipe, tee, valve, and adaptor sizes.
DESCRIPTION (and caU-out on plans)
8"FLGTEE
WI 8" FLG X PIO GV'S
10" x 8" FLG TEE
WI 10" & 8" FLG X PIO GV'S _
WI lO't FLG ADAPTOR
10" P/O x FLG TEE
WI 10" FLG XP/O GV
SYMBOL
a,r ai'
10"
I Of' 10'1