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East Otay Mesa Sewer Service Area
Sewer Master PlanJanuary 2013
East Otay Mesa Sewer Service Area Sewer Master Plan
January 2013
Prepared For:
County of San Diego 1222 First Street
San Diego, CA 92101
Prepared By:
3570 Carmel Mountain Road, Suite 300 San Diego, CA 92130
County of San Diego Contract No. 522958 Atkins Project No.: 100001472
_______________________________ Mark B. Elliott, PE Project Director
3/31/2014
Conte
Chapter
Chapter
Chapter
Chapter
Chapter
ents
1 Introd
1.1 1.2 1.3 1.4 1.5 1.6
2 Study
2.1 2.2
3 Waste
3.1 3.2
4 Hydra
4.1 4.2 4.3 4.4 4.5 4.6 4.7
5 Institu
5.1 5.2 5.3 5.4 5.5 5.6 5.7
duction and
BackgrounPurpose ..Scope of SStudy AreaConnectioFinancial U
y Area ........
BackgrounSubareas
ewater Gen
Unit GeneProjected
aulic Analys
Design CrEasementHydraulic Collection Sewer SysCity of SanSummary
utional and
New ConsEstablishmSewer CaMetro CapDevelopmProposed Summary
d Backgroun
nd...................................Services ......a .................
ons to City ofUpdate ........
....................
nd...................................
neration ......
eration RatesWastewater
sis and Sew
riteria ...........ts .................Model .........System ......
stem Facilitien Diego Regof Connecti
Financial U
solidated Disment of Sewpacity Fees .
pacity and Sment Reimbu
Community ...................
i
nd ..............
...................
...................
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...................f San Diego ...................
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s .................r Flows .......
wer Collecti
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...................es ...............gional Seweons to City S
Update .......
strict ............er Charges ...................ewer Transprsment AgreFacilities D
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...................Facilities .......................
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on System
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...................rage FacilitieSystem .......
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...................portation .....eements ......istrict for Ota...................
East Otay Me
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esa Sewer ServicSewer Mast
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ce Area er Plan ry 2013
... 1-1
... 1-1
... 1-1
... 1-2
... 1-2
... 1-2
... 1-2
... 2-1
... 2-1
... 2-1
... 3-1
... 3-1
... 3-2
... 4-1
... 4-1
... 4-1
... 4-2
... 4-2
. 4-10
. 4-11
. 4-12
... 5-1
... 5-1
... 5-2
... 5-2
... 5-3
... 5-4
... 5-5
... 5-6
TABLE
Table 2-1Table 2-2Table 3-1
Table 3-2Table 4-1Table 4-2Table 4-3Table 4-4Table 5-1
FIGURFigure 1-Figure 2-Figure 2-Figure 4-Figure 4-Figure 5-
APPEN
A. R
B. O
C. G
D. C
E. O
ES
1 East O2 Subar1 2006-
Otay M2 Recom1 City o2 Projec3 Basin4 East O1 Summ
RES -1 Vicinit-1 SPA P-2 Propo-1 East O-2 City o-1 Regio
NDICES
Reference Do
Otay Water D
Gravity Sewe
City of San D
Otay Mesa A
Otay Mesa Sreas I and II -2007 WaterMesa ..........mmended U
of San Diegocted Buildou Flow CompOtay Mesa Bmary of Exist
ty Map ........Plan ............osed DeveloOtay Mesa P
of San Diegoonal Sewer Z
ocuments
District Wate
er Pipe Calcu
Diego Water
Agreements
SPA Land UProposed D
r Use Data fo...................nit Wastewa
o Design Critut Sewer Floparison to CiBasin Buildoting City of S
...................
...................pments .......Proposed Bao Regional SZones ..........
r Use Surve
ulations
Meter Data
ii
se SummaryDevelopmentor Industrial ...................ater Generatteria ............ws by Basinty OMTS Ma
out Flow SumSan Diego S
...................
...................
...................ackbone Sew
Sewer System...................
ey
Card
y .................t Plans........Properties i...................tion Rates ......................
n ..................aster Plan Ummary .........Sewer Agree
...................
...................
...................wer Systemm ...................................
East Otay Me
...................
...................n City-East ............................................................................
Update ............................ments .........
...................
...................
...................
...................
...................
...................
Cont
esa Sewer ServicSewer Mast
Januar
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tents
ce Area er Plan ry 2013
... 2-2
... 2-2
... 3-2
... 3-2
... 4-1
... 4-5
... 4-8
. 4-12
... 5-5
... 1-3
... 2-4
... 2-5
... 4-3
. 4-13
... 5-7
Acro
CFD
County
District
EDU
EOM
Governin
gpd/ac
LAFCO
Metro
mgd
OCCP
OIC
OMTS
SAMP
SPA
SR
SSA
nyms
ng Board
Commun
County o
County S
equivale
East Ota
Board of
gallons p
Local Ag
City of S
million g
Otay Cro
Otay Inte
Otay Me
Subarea
Specific
State Ro
Sewer S
nity Facilities
of San Diego
Sanitation D
ent dwelling u
ay Mesa
f Supervisor
per day per
gency Forma
San Diego M
allons per d
ossings Com
ernational C
esa Trunk Se
a Master Pla
Plan Area
outes
Service Area
i
s District
o
District
unit
rs serves as
acre
ation Comm
Metropolitan W
ay
mmerce Park
Center
ewer
n
the Board o
ittee
Wastewater
k
East Otay Me
of Directors
System
esa Sewer ServicSewer Mast
Januar
ce Area er Plan ry 2013
TThis page in
ii
tentionally le
eft blank.
East Otay Me
Acron
esa Sewer ServicSewer Mast
Januar
nyms
ce Area er Plan ry 2013
CHAPINTRO
1.1 B
The Cou(GoverniEast OtaMesa areOperatioservice fe
The EasWastewaenacted TreatmenWhile theconsidere17.503 mhistoricalregional capacity.
The EastBoard ofMesa areMesa SeSanitatioSanitatio
1.2 P
The purpefficient, and a plupdates conveyantreatmenSSA incl(OMTS)
PTER 1 ODUCTIO
Background
unty of San ng Board) f
ay Mesa Seea and is mn and mainees assesse
st Otay Mesater System between thent Plant, locere are seved one entit
million gallonl regional agcapacity ne.
t Otay Mesaf Supervisorea. Based uewer Maintenon District anon District.
Purpose
pose of this and cost-ef
lan to coordSSA conne
nce systemnt facilities. Tuding the Csystem.
ON AND
d
Diego (Cofor the San wer Service
maintained btenance cos
ed to each co
sa SSA con(Metro) und
e City of Sancated in Poieral separatty by Metro fns per day (greements, aeds. The E
a Sewer Mars to provideupon a Counance Distrind the Spring
study is to pffective meadinate servicection points, which ulti
This study aity of San D
D BACKG
unty) BoardDiego Cou
e Area (SSAby the Countsts required onnection to
veys all sewder a compren Diego andnt Loma, trete County Sfor purposesmgd). Witha share of M
East Otay Me
aintenance De sewage conty Board oct was officig Valley San
provide the ans of providce with the s to the eaimately flowlso providesiego supple
1-1
GROUN
d of Supervinty Sanitatio
A). The SSAty of San Dfor the SSA
o the sewera
wer flows inehensive Re
d the participeats sewage
SSAs within s of capacityin the DistriMetro capacesa SSA ha
District was eollection serf Supervisorally reorgannitation Dist
East Otay Mding sewer s
City of Sanastern reachws into the s an update mental fees
D
isors serveson District (A serves th
Diego WasteA are collec
age system.
nto the Cityegional Waspating agence from all othe District
y rating and ct, the SSAs
city for the ps been appo
established rvices for thrs action, on
nized and anrict was ren
Mesa SSA oservice withn Diego (Cihes of the C
City’s Region the currefor funding
East Otay Me
s as the Bo(District), whhe unincorpowater Mana
cted through
y of San Diestewater Dispcies within Mof the partici
(a total of 9its current M
s are apportpurposes of ortioned 1.0
in June 199he unincorpon July 1, 201nnexed into tamed the S
f the Countyin the East ity). This stuCity’s municional Metro ent financialthe Otay Me
esa Sewer ServicSewer Mast
Januar
oard of Direhich includeorated East agement Sech connection
ego Metropoposal Agree
Metro. The Mipating agen9), the DistrMetro capactioned, baseprojecting f00 mgd of M
99 by the Coorated East 11 the East the Spring Van Diego Co
y with an ovOtay Mesa
udy reviewscipal wastew
interceptorl planning foesa Trunk S
ce Area er Plan ry 2013
ectors s the Otay ction. n and
olitan ement Metro ncies. rict is city is ed on future Metro
ounty Otay Otay
Valley ounty
verall, area
s and water r and or the Sewer
1.3 S
The Couand revideterminto serve initiated use infodetermintreatmen
1.4 S
The EasDiego CapproximOtay Riv
1.5 C
This plangravity flousing a sCity’s OtStudy (ORefinemegeneratioOtay Mes
In order of the SaCounty e1998 Reother MeThis agreareas to
1.6 F
The Coubackbonetask forcecounsel District (includes
Scope of Se
unty retainedew the 200e the key sizEast Otay Mthe developrmation. We the need
nt capacity ne
Study Area
t Otay MesaCounty, immmately 1,525er Valley to
Connection
nning study ow and ministrategy contay Mesa seOMTS Masent and Phaon rates usesa, similar to
to convey itan Diego Muentered into
egional Wastetro participaeement is inthe City’s M
Financial U
nty and Citye sewer face or financeand the Cit
(CFD) to comore detaile
ervices
d Atkins to p06 East Otazes, alignmeMesa develo
pment entitleWith these nd, timing, aneeds from th
a Specific Pmediately no5 developabthe north an
ns to City o
focuses onimizing the nnsistent withewerage syster Plan Uasing Repored in this stuo those assu
s wastewateunicipal Sys an agreemtewater Dispating agenc
ncluded in Aetro System
pdate
y developerscilities are co committee ty to implemollect propeed discussio
prepare the ay Mesa Seents, and phopments. Siement procenew developnd sizing ohe City’s Me
Plan Area (Sorth of the le acres bo
nd the City’s
of San Dieg
n laying out number of coh the City’s stem is give
Update, Atkirt (OMTS Reudy are baseumed in the
er to the Metem for conv
ment that ouposal Agreecies detailedppendix A a
m.
s have joinedonstructed inhas been de
ment an assrty assessm
ons on the C
1-2
2012 East ewer Mastehasing for thnce the 200
ess, and thispment plansof the collecetro System.
SPA) is locaU.S./Mexic
und by the Otay Mesa
go Facilitie
the SSA’s onnections tsewer plann in the OMns, June 2efinement Red on recentOMTS Refin
etro System veyance. On
utlined the teement (Metrod the terms and provides
d forces to dn a timely meveloped to sessment diments to funCFD and inst
Intr
Otay Mesa er Plan Upde backbone 06 Master Ps Master Plas, wastewaction system
ated in the sco internatioSan Ysidroarea to the
es
key sewer ito the City’s ning efforts.
MTS Master 2004) and
Report, Atkint water usagnement Rep
for treatmenn Septembeerms of waso Agreemenof wastewa
s fees involv
develop a finmanner with
work with a strict knownnd sewer situtional fina
roduction a
East Otay Me
Sewer Masdate (2006
sewer infraPlan, severalan will inclu
ater flows wm and to a
southeasteronal border
o Mountains west (see F
infrastructurexisting con
. The plannPlan Updatsubsequent
ns, May 200ge records inort.
nt, the SSA er 10, 2001, stewater tra
nt) between ater treatmeved in conne
nancing optiodevelopmenfinancial sp
n as a Comystem upgr
ancial inform
and Backgro
esa Sewer ServicSewer Mast
Januar
ster Plan UpMaster Plastructure nel properties de updated
were updateassess addit
rn portion ofr. It consis
to the eastigure 1-1).
re by maximnveyance sying basis fote and Alignt OMTS Pr9). The unitn similar are
requires thethe City an
ansportation.the City and
ent and dispecting the Co
on to ensurent. As a res
pecialist and mmunity Facrades. Sectiation.
ound
ce Area er Plan ry 2013
pdate n) to
eeded have land
ed to tional
f San ts of t, the
mizing ystem or the nment roject t flow eas in
e use d the . The d the
posal. ounty
e that sult a legal
cilities ion 5
TThis page in
1-4
tentionally le
Intr
eft blank.
roduction a
East Otay Me
and Backgro
esa Sewer ServicSewer Mast
Januar
ound
ce Area er Plan ry 2013
CHAPSTUD
2.1 B
The SSAof San DapproximOtay Rivand Easlocated oJohnson
Through subareasRoutes (for theseshown in
2.2 S
The folloTable 2-1
2.2.1 S
Subarea jurisdictiotechnologhalf of Sfor reseaare planncurrent dpower geregion nmanufacactivitiesof Subarcampgroare listed
PTER 2 DY AREA
Background
A encompasDiego Countmately 1,525 ver Valley tot Otay Counoutside of thCanyon Sew
an amendms, which areSR) 905, SR
e areas. Extn the 2000 S
Subareas
owing parag1 provides a
Subarea I
I includes onal border. gical busineubarea I ha
arch, developned in the fadevelopmentenerating plear the U.Sturing, and . Due to rug
rea I have beounds and fod in Table 2-
A
d
ses the Easy, immediatdevelopable
o the north. nty Detentiohe District swer.
ment to the Se shown in R 125, and Stensions of PA Plan and
raphs provida summary o
approximatLand plann
ess park, a s been desipment and tar northeastt plans, thislant. Light i
S./Mexico indistribution
gged terrain een designa
or outdoor sp2 and shown
st Otay Mesately north of e acres bouDonovan S
on Facilities service area
SPA Plan inFigure 2-1. SR 11; as wOtay Mesa
d will provide
de a descripof land uses
ely 1,035 dning in Subaprison, powgnated as atesting in a ctern region o area will bndustrial acternational , along withand biologi
ated as Conporting activn on Figure
2-1
a SPA, whicf the U.S./Mnd by the State Correctare located
a and are co
n 2000, the CNew region
well as a newRoad, Airw
e possible a
ption of the for each sub
developablearea I includewer generatina Technologcampus-likeof Subarea e used for s
ctivities are border. Theh some gecal concernsservation/Li
vities. Propos2-2.
ch is locatedexico internan Ysidro Mtional Facilitd north of thonnected to
County dividnal highwayw light rail syway Road, alignments fo
subareas inbarea.
acres locates general, ng plant andy Business
e environmenI near the dseveral autoplanned in
ese activitiesneral industs, small pormited Use. Tsed develop
East Otay Me
d in the soutational bord
Mountains in ty and the Ghe SPA. Tho the existin
ded the SPAys and roadsystem, will pand Lonestaor backbone
n the East O
ted adjacenheavy, and d open spacPark that wnt. Heavy indetention facomobile recythe souther
s may inclutrial and mrtions in the These areas
pment plans
esa Sewer ServicSewer Mast
Januar
theastern poder. It consis
the east anGeorge F. Bese facilitiesg County-ow
A into two diss, such as rovide circul
ar Road aresewer facilit
Otay Mesa
nt to City/Colight industrce areas. N
will include ofndustrial acticilities. Baseycle yards arn portion ode warehouixed commenorthern regs are plannewithin Suba
ce Area er Plan ry 2013
ortion sts of d the
Bailey s are wned
stinct State lation also ties.
SPA.
ounty rial, a
Nearly ffices vities
ed on and a of the using, ercial gions ed as area I
T
Tab
County De
Subarea I
MUP 03-00
MUP 98-00
TM 5549
MUP 06-07
MUP P00-0
TPM 21012
TPM 21140
STP 05-02
TPM 21046
TM 5527
TM 5538
TM 5394
TM 5304
TPM 20414
MUP 98-02
P88-020W4
STP 00-070
Subarea II
TM 5405-1
SPA 04-00
TM 5505
Table 2-1
Land Use
Subarea I
Light Indust
General Ind
Heavy Indu
Technology
Prison
Power Gen
Fire Station
Subtotal
Subarea II
Mixed Indus
Border Cros
Subtotal
Total
le 2-2 Su
evelopment No
01
01
74
012
2
0
1
6
4
24W1
4
0
, TM 5405-6
6
East Otay M
trial
dustrial
ustrial
y Business Par
erating Plant
n
strial
ssing
bareas I an
o. Develop
Rowland
Internatio
Internatio
CCA Wes
Fong
Calpine C
OMC Pro
Pilot Trav
Otay Mes
Piper Ota
Sunroad
South Co
Airway B
De La Fu
De La Fu
Kouladjia
Fire Stati
Otay Cro
Otay Cro
Paragon
2-2
Mesa SPA L
rk
d II Propos
ment Name
TO Developm
onal Industrial P
onal Industrial P
stern Propertie
Construction (E
operties, LLC
vel
sa Crossing, LL
ay Park
Otay Partners
ounty Commerc
usiness Park
uente TPO, LLC
uente TPO, LLC
an
ion
ossings Comme
ossings Comme
Business Park
Land Use S
Area (acre
243.9
79.0
31.7
618.7
37.0
23.4
1.9
1,035.5
360.5
129.0
489.5
1,525.0
ed Develop
ent
Park
Park
es, Inc.
Energy Plant)
LC
LP (Tech Cen
ce Center, LLC
C
C
erce Park
erce Park
k
East Otay Me
Summary
es)
pment Plans
ter)
C (J/D Roll 80-a
Study
esa Sewer ServicSewer Mast
Januar
s
acre)
Area
ce Area er Plan ry 2013
2.2.2 S
The remaMountaininclude awithout dthe sewelisted in T
Subarea II
aining 490 ans. Current a third bordedevelopmenter analysis pTable 2-2 an
acres make uplanning c
er crossing at plans are eperformed innd shown on
up Subarea calls for mixand a new
expected to n this report.n Figure 2-2.
2-3
II, which liesxed industriBorder Patrbe on septic Proposed d
s between Sal land useol headquar
c systems. Tdevelopmen
East Otay Me
Subarea I anes. Proposerters. Rural
These areas t plans with
Study
esa Sewer ServicSewer Mast
Januar
nd the San Yed developmresidential adid not influin Subarea
Area
ce Area er Plan ry 2013
Ysidro ments areas uence II are
CHAPWAST
Wastewadevelopmgallons pmanufacincorpora2004 OMOMTS Rdetermindetermindisposal.
3.1 U
Average parcels buse of thgeneratioPreviousall classif
To betterfor existiserved blikely be to the sew
The OMT1,000 acfrom lesssize. As average less than
To calcupercentadependintypically rate is as
PTER 3 TEWATE
ater flows ments. For eper day per turing facilityates the CouMTS Master
Refinement Re more reale the need.
Unit Genera
wastewaterby a charache parcels. Pon rates sps County plafications of i
r estimate ung developmy Otay Watesimilar to thwer system.
TS Refinemcres of induss than one a
shown in Tuse for thes
n 1,000 gpd/
late a sewagage is applieng on the exseparate anssumed for t
ER GEN
are highly example, theacre (gpd/a
y, which maunty’s anticir Plan usedReport used istic sewer g
d and timing
ation Rates
r flow rates cteristic unit Previous plapecified in enning studiendustrial an
unit generatiments in Otaer District, whe existing d.
ment Report strial propertacre to 40 aTable 3-1, se propertieac. The Otay
ge generatioed. Typicalxtent of outdnd were not ithis area and
ERATIO
variable fe wastewateac) or less, ay be as higpated devel a design fwater billing
generation fag for purcha
s
are estimategeneration nning studieeither the Ces generally d commercia
on rates foray Mesa, lo
were evaluatdevelopment
used existities in City’sacres and wannual wate
es is 800 gpy Water Dist
on rate from l return-to-s
door uses ofncluded in td the averag
3-1
ON
for differener generatiowhich varie
gh as 5,000 lopment in tfactor of 5,0g data for simactors. Accasing additi
ed by multiprate corresp
es for the EaCounty or C
assumed aal land uses
r future deveocated to theted with the t and that th
ng Otay Was east Otay
water meter ser use datad/ac. Of thetrict water us
water use rasewer rates f water. In Ohe evaluatio
ge sewer gen
nt types ofon rate for as greatly frogpd/ac. Th
the East Ota000 gpd/ac milar propertcurate future onal Metro
plying the grponding to tast Otay MeCity of San unit genera
s.
elopment in e west of thassumption
he majority o
ater District Mesa area.sizes rangeda for these e 276 metersse survey is
ates, a standare in the
Otay Water on. Thereforneration rate
East Otay Me
f industrial a warehouseom the genee OMTS Reay Mesa arefor industria
ties in the Oflow estimacapacity fo
ross acreagethe existing
esa SPA havDiego’s de
ation rate of
the SPA, we East Otay that future
of the water
meter data The lot siz
d from ¾ incproperties s evaluated included as
dard averagrange of 60District, irrigre, the highee would be 7
esa Sewer ServicSewer Mast
Januar
or commee is typicallyeration rate efinement Rea. The preval land use.tay Mesa ar
ates are criticor treatment
e of one or or planned
ve used stanesign guide2,000 gpd/a
water use recy Mesa SPAdevelopmenused is retu
a to identify zes served vch to 4-inchindicate tha, two thirds
s Appendix B
e return to s0 to 75 per
gation meterer return to s75 percent o
ce Area er Plan ry 2013
ercial y 500 for a
Report vious . The rea to cal to t and
more land ndard lines. ac for
cords A and nt will urned
over varied hes in at the
used B.
sewer rcent, rs are sewer of 800
gallons of water per day per acre, or 600 gallons of sewage per day per acre for industrial development.
Table 3-1 2006-2007 Water Use Data for Industrial Properties in City
Meter Size Meter Count
Unknown 19
3/4" 49
1" 91
1 1/2 " 61
2" 50
3"
4"
Total 276(1)
Includes frozen food customer using 15,000 gpd/acreSource: May 2009 OMTS Refinement Report, Table 3
To account for future development within the wastewater generation rate estimates were adjusted for planning purposes. The following section and Table 3-2 presents the recommended unit generation rates for the
Table 3-2 Recommended Unit Wastewater Generation Rates
Land Use
Light Industrial
General Industrial
Heavy Industrial
Mixed Industrial
Technology Business Park
3.2 Projected Wastewater Flows
Based on the recommended unitRefinement Report, projected average flow rates for each land use category were determined.
Light and General industrial categories were used to idedistribution and manufacturing and processing. A typical demand for these land use type is 865 gpd/ac, based on analysis from the OMTS Refinement zone is a power generating plan3,000 gpd/ac was used for the generating plant site based on typical data for plants of this size and usage type. Also, it was determined that border crossing facilities of similar size to the oneproposed in Subarea II generated approximately 580 gpd/ac of wastewater.
Wastewater Generation
3-2 East Otay Mesa Sewer Servic
gallons of water per day per acre, or 600 gallons of sewage per day per acre for industrial
2007 Water Use Data for Industrial Properties in City-East Otay Mesa
Count Acreage Average Water
Demand Average
Water
19 89.0 67,386 gpd
49 119.2 114,819 gpd
91 238.0 145,821 gpd
61 193.4 136,475 gpd 1,009 gpd/ac
50 329.1 208,873 gpd
4 17.4 104,382 gpd 4,495 gpd/ac
2 5.5 15,688 gpd 2,728 gpd/ac
276 991.6 790,000 gpd
Includes frozen food customer using 15,000 gpd/acre Refinement Report, Table 3
To account for future development within the SSA with potentially higher water use, unit generation rate estimates were adjusted for planning purposes. The following
2 presents the recommended unit generation rates for the SS
Recommended Unit Wastewater Generation Rates
Land Use Generation Rate
Light Industrial 865 gpd/ac
General Industrial 865 gpd/ac
Heavy Industrial 865 gpd/ac
Mixed Industrial 1,000 gpd/ac
Technology Business Park 1,500 gpd/ac
Wastewater Flows
Based on the recommended unit wastewater generation rates given in Table 3-Refinement Report, projected average flow rates for each land use category were determined.
Light and General industrial categories were used to identify land used for warehousing and distribution and manufacturing and processing. A typical demand for these land use type is 865 gpd/ac, based on analysis from the OMTS Refinement Report. Also proposed for the industrial zone is a power generating plant north of Lonestar Road and east of Alta Road. A demand of 3,000 gpd/ac was used for the generating plant site based on typical data for plants of this size and usage type. Also, it was determined that border crossing facilities of similar size to the oneproposed in Subarea II generated approximately 580 gpd/ac of wastewater.
Wastewater Generation
East Otay Mesa Sewer Service Area Sewer Master Plan
January 2013
gallons of water per day per acre, or 600 gallons of sewage per day per acre for industrial
East Otay Mesa
Average Unit Water Demand
813 gpd/ac
702 gpd/ac
802 gpd/ac
1,009 gpd/ac
935 gpd/ac
4,495 gpd/ac(1)
2,728 gpd/ac
800 gpd/ac
with potentially higher water use, unit generation rate estimates were adjusted for planning purposes. The following
SSA.
Recommended Unit Wastewater Generation Rates
-2 and the OMTS Refinement Report, projected average flow rates for each land use category were determined.
ntify land used for warehousing and distribution and manufacturing and processing. A typical demand for these land use type is 865
. Also proposed for the industrial t north of Lonestar Road and east of Alta Road. A demand of
3,000 gpd/ac was used for the generating plant site based on typical data for plants of this size and usage type. Also, it was determined that border crossing facilities of similar size to the one
The mixincludinggeneratio
The CCAprovide rMaster Pfacilities hydraulicservice.
ed industriag warehousinon rates of 1
A Prison derecycled waPlan (SAMPusing the s
c analysis fo
al and businng and distri,000 gpd/ac
evelopment iater for irrigP) to documsewer flow er flows from
ness park aibution, whicc and 1,500 g
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3-3
areas were ch typically pgpd/ac were
g to build anproject is i
ater and sewom the CCAin the event
comparableproduce highe assumed, r
n on-site wain the procewer flows. A Prison SAthe wastew
Wastew
East Otay Me
e to those her flows. Corespectively
astewater tress of prep
This MasteAMP but wil
water treatme
water Genera
esa Sewer ServicSewer Mast
Januar
areas surveonsequently.
reatment plaaring a Suber Plan willll also perfoent plant is o
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eyed, y, unit
ant to barea size
orm a out of
TThis page in
3-4
tentionally leeft blank.
Wastew
East Otay Me
water Genera
esa Sewer ServicSewer Mast
Januar
ation
ce Area er Plan ry 2013
CHAPHYDR
The propto serve area flowinfrastruc
4.1 D
As an exreviewedlower wasurvey. Tbased on
Other de
4.2 E
Access aEasemenFinal eachecks. projectio
PTER 4 RAULIC A
posed backbas an exten
wing by gravicture.
Design Crit
xtension of d and recomastewater geThe County n equivalent
esign criteria
Param
Mann
Minim
Maxim
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Easements
and utility ent size will sement locaThis study ns and conc
ANALYS
bone wastewnsion of the ity. Consiste
teria
the City’s smended for eneration raflows were population:
used in this
Table 4-
meter
ings ‘n’
mum Dry Weath
mum Velocity
mum d/D Ratio
mum Sewer Sizcil Policy 600-4
easements be determinations will bis intended
ceptual pipel
SIS AND
water collectCity of San
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ewer collectthis study ates were uspeaked usin
.6PF
s analysis are
-1 City of
her Peak Flow
ze per City of S4
will be proned based obe determin
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4-1
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tion systemarea. Howevsed for the ang the City’s
*2945 Pop
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0
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R COLL
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1342.0
ed below in
Design Cri
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0.013
2 fps (or 1% m
10 fps
0.50 for D ≤ 15
0.75 for D > 18
10-inch diamet
all sewer faguidelines amap reviewsewer sizesn general de
East Otay Me
LECTION
t Otay Mesawith a majored in analyz
an Diego dessed in the upon the ex
er peaking e
Table 4-1.
teria
ia
min slope)
5”
8”
ter
cilities in thand develop
ws and/or ims based on evelopment
esa Sewer ServicSewer Mast
Januar
N SYSTE
a SPA is plarity of the sezing the prop
esign criteriaprevious secxisting watequation, wh
he service pment limitatmprovement
preliminaryplans.
ce Area er Plan ry 2013
EM
anned ervice posed
a was ction, r use ich is
area. tions. plan
y flow
4.3 Hydraulic Model
The backbone sewer collection system was evaluated using a steady state spreadsheet model to size proposed sewer mains. Average dry weather demands were determined using the recommended unit demands from Table 3weather peaking equation as stated above from the City’s design standards. Gravity sewer calculations are provided in Appendix C.
4.4 Collection System
With the goal of maximizing gravity flow and the study area was divided into basins that flow either northerly to the Otay Valley Trunk Sewer system or southerly to the Otay Mesa Trunk Sewer system. Logical connections to the City’s system were determined from basin delineations using information from current development plans, general and specific plans, and existing topographic maps.
4.4.1 Basins
Subareas I and II were further divided into six separate basins depending on the existing and proposed topography and conditions of the existing collection system (see Figure 4basin and connection location was given a unique identifier, East Otay Mesa (EOM6. The following paragraphs describe the land use, acreage, and demands associated with each basin and are summarized in Table 4for each basin for buildout are shown in Table 4reviewed with the East Otay Mesa Property Owners Association, as they will also serve as a basis for the financing district (see Chapter 5).
A comparison of the projected buildout flows to the OMTS Master Plan Update is summarized in Table 4-3. To assess the impacts on the City OMTS conveyance system, the Plan used the Otay Mesa Trunk Sewer dynamic model to evaluate the of 4 mgd. Findings of the analysis are presented in the OMTS that analysis and the revised average buildout flows of 1.8 mgdwill have adequate capacity to convey the projected basin flows.
The total flows from the East Otay Mesa SPA are Refinement Report; in addition, Trunk Sewers are slightly different. These differences were analyzed as part of this report and it was determined that the downstream City facilities have adequate capacity to handle additional flow from the County. No additional upgrades will be required and phasing of the OMTS can continue as planned.
Hydraulic Analysis and Sewer Collection System
4-2 East Otay Mesa Sewer Servic
The backbone sewer collection system was evaluated using a steady state spreadsheet model to size proposed sewer mains. Average dry weather demands were determined using the recommended unit demands from Table 3-1. Peaking factors were obtained from the City’s dry weather peaking equation as stated above from the City’s design standards. Gravity sewer calculations are provided in Appendix C.
With the goal of maximizing gravity flow and connecting into the City’s existing sewer system, the study area was divided into basins that flow either northerly to the Otay Valley Trunk Sewer system or southerly to the Otay Mesa Trunk Sewer system. Logical connections to the City’s
ined from basin delineations using information from current development plans, general and specific plans, and existing topographic maps.
Subareas I and II were further divided into six separate basins depending on the existing and hy and conditions of the existing collection system (see Figure 4
basin and connection location was given a unique identifier, East Otay Mesa (EOMdescribe the land use, acreage, and demands associated with each
basin and are summarized in Table 4-2 and identified in Figure 4-1. The projected sewer flows for each basin for buildout are shown in Table 4-2. These flows and assumed acreages were
d with the East Otay Mesa Property Owners Association, as they will also serve as a basis for the financing district (see Chapter 5).
A comparison of the projected buildout flows to the OMTS Master Plan Update is summarized in cts on the City OMTS conveyance system, the
Otay Mesa Trunk Sewer dynamic model to evaluate the buildout. Findings of the analysis are presented in the OMTS Master Plan Update. Based on
he revised average buildout flows of 1.8 mgd, the existing City infrastructure will have adequate capacity to convey the projected basin flows.
The total flows from the East Otay Mesa SPA are much lower than those assumed in the OMTS the location and split between the Otay Mesa and Otay Valley
Trunk Sewers are slightly different. These differences were analyzed as part of this report and it was determined that the downstream City facilities have adequate capacity to handle additional flow from the County. No additional upgrades will be required and phasing of the OMTS can continue as planned.
Hydraulic Analysis and Sewer Collection System
East Otay Mesa Sewer Service Area Sewer Master Plan
January 2013
The backbone sewer collection system was evaluated using a steady state spreadsheet model to size proposed sewer mains. Average dry weather demands were determined using the
1. Peaking factors were obtained from the City’s dry weather peaking equation as stated above from the City’s design standards. Gravity sewer
connecting into the City’s existing sewer system, the study area was divided into basins that flow either northerly to the Otay Valley Trunk Sewer system or southerly to the Otay Mesa Trunk Sewer system. Logical connections to the City’s
ined from basin delineations using information from current development
Subareas I and II were further divided into six separate basins depending on the existing and hy and conditions of the existing collection system (see Figure 4-1). Each
basin and connection location was given a unique identifier, East Otay Mesa (EOM) 1 through describe the land use, acreage, and demands associated with each
1. The projected sewer flows These flows and assumed acreages were
d with the East Otay Mesa Property Owners Association, as they will also serve as a
A comparison of the projected buildout flows to the OMTS Master Plan Update is summarized in cts on the City OMTS conveyance system, the OMTS Master
buildout flow projection Master Plan Update. Based on , the existing City infrastructure
those assumed in the OMTS the location and split between the Otay Mesa and Otay Valley
Trunk Sewers are slightly different. These differences were analyzed as part of this report and it was determined that the downstream City facilities have adequate capacity to handle the additional flow from the County. No additional upgrades will be required and phasing of the
Developer / O
EOM-1
Sunroad Otay
Sunroad Otay
Sunroad Otay
Sunroad Otay
International I
State of Califo
San Diego Ga
Rural Fire Pro
International I
International I
Fong-Hsu Tru
T.O. Developm
Rancho Vista
Rancho Vista
International I
International I
OMC Properti
OMC Properti
OMC Properti
OMC Properti
Alta Parcels L
D&D Landhold
Alta Parcels L
Alta Parcels L
Alta Parcels L
Calpine Corp
Alta Parcels L
International I
International I
International I
CCA Western
Otay Hills Proj
Subtotal EOM
T
Owner
y Partners
y Partners
y Partners
y Partners
ndustrial Park
ornia
as & Electric
otection District
ndustrial Park
ndustrial Park
st
ment LLC
Del Mar
Del Mar
ndustrial Park
ndustrial Park
es LLC
es LLC
es LLC
es LLC
LP
dings
LP
LP
LP
Dgen, LP
LP
ndustrial Park
ndustrial Park
ndustrial Park
Properties
ject
M-1 (OVTS) – s
Table 4-2
Open S
Open S
Open S
Open S
Technol
Technol
Technol
t Fire Sta
mitigatio
Heavy I
Technol
Technol
Technol
General
Technol
General
Technol
General
General
Open S
Power G
Power G
Open S
Power G
Power G
Power G
Power G
General
General
Open S
Prison
Open S
see note 4
H
Projected B
Land Use
pace
pace
pace
pace
logy Business
logy Business
logy Business
ation
on land
ndustrial
logy Business
logy Business
logy Business
l Industrial
logy Business
l Industrial
logy Business
l Industrial
l Industrial
pace
Generating Pla
Generating Pla
pace
Generating Pla
Generating Pla
Generating Pla
Generating Pla
l Industrial
l Industrial
pace
pace
Hydraulic A
4-5
Buildout Se
DevelArea (
Park
Park
Park
Park
Park
Park
Park
Park
nt
nt
nt
nt
nt
nt
Analysis and
ewer Flows
opable (acres)
SGen
R(gp
0.00
0.00
0.00
0.00
62.99
0.00
11.40
1.87
0.00
31.68
30.57
34.48
32.00
0.80
6.23
3.53
39.80
10.18
9.78
0.00
7.99 se
0.00
0.00
3.75
7.74
0.00 se
3.94
45.22
9.50
0.00
36.96 se
0.00
390.4
d Sewer Co
East Otay Me
by Basin
ewer neration Rate d/acre)
TotaFlo
0
0
0
0
1,500
1,500
1,500
1,500
0
865
1,500
1,500
1,500
865
1,500
865
1,500
865
865
0
ee note 1
865
865
865
865
ee note 2
865
865
865
0
ee note 3
0
ollection Sys
esa Sewer ServicSewer Mast
Januar
al Sewer ow (gpd)
S(
0
0
0
0
94,485
0
17,100
2,808
0
27,403
45,855
51,720
48,000
692
9,345
3,053
59,700
8,806
8,460
0
240
0
0
3,244
6,695
40,000
3,408
39,115
8,218
0
125,200
0
603,547
stem
ce Area er Plan ry 2013
Sewer EDUs)
0
0
0
0
394
0
71
12
0
114
191
216
200
3
39
13
249
37
35
0
1
0
0
14
28
167
14
163
34
0
522
0
2,515
Developer / O
EOM-2
Dante Corpora
Margain
Sunroad Otay
Pauter
Egger
State of Califo
Zinser-Furby I
Zinser-Furby L
Sunroad Otay
Sunroad Otay
Sunroad Otay
Sunroad Otay
South Bay Exp
Sunroad Otay
Sunroad Otay
Rabago Inves
Rabago Inves
Rabago Inves
Pilot Travel
Piper Ranch L
Otay Mesa Cr
Sunroad Otay
Sunroad Otay
Sunroad Otay
Sunroad Otay
Sunroad Otay
Sunroad Otay
Sunroad Otay
Sunroad Otay
Sunroad Otay
Sunroad Otay
Sunroad Otay
Sunroad Otay
Sunroad Otay
Sunroad Otay
Sunroad Otay
Sunroad Otay
Subtotal EOM
Owner
ation
y Partners
ornia
Inc.
LLC
y Tech Centre
y Tech Centre
y Tech Centre
y Tech Centre
pressway
y Tech Centre
y Tech Centre
st Group LLC
st Group LLC
st Group LLC
LP
rossing LLC
y Tech Centre
y Tech Centre
y Tech Centre
y Tech Centre
y Tech Centre
y Tech Centre
y Tech Centre
y Tech Centre
y Tech Centre
y Tech Centre
y Tech Centre
y Tech Centre
y Tech Centre
y Tech Centre
y Tech Centre
y Tech Centre
M-2
Technol
Technol
Technol
Technol
Technol
Highway
Technol
Technol
Technol
Technol
Technol
Technol
Technol
Technol
Technol
Technol
Technol
Technol
Light Ind
Light Ind
Technol
Technol
Technol
Technol
Technol
Technol
Technol
Technol
Technol
Technol
Technol
Technol
Technol
Technol
Technol
Technol
Technol
H
Land Use
logy Business
logy Business
logy Business
logy Business
logy Business
y 125
logy Business
logy Business
logy Business
logy Business
logy Business
logy Business
logy Business
logy Business
logy Business
logy Business
logy Business
logy Business
dustrial
dustrial
logy Business
logy Business
logy Business
logy Business
logy Business
logy Business
logy Business
logy Business
logy Business
logy Business
logy Business
logy Business
logy Business
logy Business
logy Business
logy Business
logy Business
Hydraulic A
4-6
DevelArea (
Park
Park
Park
Park
Park
Park
Park
Park
Park
Park
Park
Park
Park
Park
Park
Park
Park
Park
Park
Park
Park
Park
Park
Park
Park
Park
Park
Park
Park
Park
Park
Park
Park
Park
Analysis and
opable (acres)
SGen
R(gp
15.63
7.73
15.00
15.73
7.73
0.10
3.33
19.95
28.75
14.37
14.37
28.19
13.04
0.08
25.10
26.92
26.92
1.87
10.15 se
20.15
23.01
4.40
5.08
2.47
2.46
2.44
1.17
1.17
2.65
2.67
2.36
2.37
2.18
2.00
1.80
2.61
2.75
358.7
d Sewer Co
East Otay Me
ewer neration Rate d/acre)
TotaFlo
1,500
1,500
1,500
1,500
1,500
0
1,500
1,500
1,500
1,500
1,500
1,500
1,500
1,500
1,500
1,500
1,500
1,500
ee note 5
865
1,500
1,500
1,500
1,500
1,500
1,500
1,500
1,500
1,500
1,500
1,500
1,500
1,500
1,500
1,500
1,500
1,500
ollection Sys
esa Sewer ServicSewer Mast
Januar
al Sewer ow (gpd)
S(
23,445
11,595
22,500
23,595
11,595
0
4,995
29,925
43,118
21,559
21,559
42,285
19,560
120
37,650
40,373
40,373
2,805
5,040
17,430
34,515
6,600
7,620
3,705
3,690
3,660
1,755
1,755
3,975
4,005
3,540
3,555
3,270
3,000
2,700
3,915
4,125
514,905
stem
ce Area er Plan ry 2013
Sewer EDUs)
98
48
94
98
48
0
21
125
180
90
90
176
82
1
157
168
168
12
21
73
144
28
32
15
15
15
7
7
17
17
15
15
14
13
11
16
17
2,145
Developer / O
EOM-3
South County
South County
South County
South County
MS Developm
MS Developm
Subtotal EOM
EOM-4
Airway Diego
MS Developm
MS Developm
Subtotal EOM
EOM-5
Hanna
De La Fuente
Subtotal EOM
EOM-6
RLR Investme
Otay Logistics
Otay Logistics
Kouladjian
Kouladjian
Farida
New Border C
State of Califo
Kearny Otay C
Kearny Otay C
Hawano
Hawano
Paragon Busin
Paragon Busin
U.S. of Americ
Millican Patric
U.S. of Americ
Millican Patric
U.S. of Americ
RLR Investme
U.S. of Americ
Owner
Commerce Ce
Commerce Ce
Commerce Ce
Commerce Ce
ment Co LLC
ment Co LLC
M-3
LLC
ment Co LLC
ment Co LLC
M-4
TPO
M-5
ents LLC
s Industrial LLC
s Industrial LLC
Crossing
ornia
Crossings
Crossings
ness Park
ness Park
ca
cia G
ca
cia G
ca
ents LLC
ca
enter Technol
enter Technol
enter Technol
enter Technol
Light Ind
Light Ind
Light Ind
Light Ind
Light Ind
Light Ind
Light Ind
Light Ind
C Light Ind
C Light Ind
Technol
Technol
Light Ind
Border C
Border C
Mixed In
Mixed In
Light Ind
Light Ind
Mixed In
Mixed In
Border Z
Light Ind
Border Z
Mixed In
Border Z
Light Ind
Border Z
H
Land Use
logy Business
logy Business
logy Business
logy Business
dustrial
dustrial
dustrial
dustrial
dustrial
dustrial
dustrial
dustrial
dustrial
dustrial
logy Business
logy Business
dustrial
Crossing
Crossing
ndustrial
ndustrial
dustrial
dustrial
ndustrial
ndustrial
Zone
dustrial
Zone
ndustrial
Zone
dustrial
Zone
Hydraulic A
4-7
DevelArea (
Park
Park
Park
Park
Park
Park
Analysis and
opable (acres)
SGen
R(gp
11.55
11.58
11.60
11.61
4.00
3.54
53.9
15.22
3.82
3.54
22.6
19.51
44.74
64.3
6.10
3.05
8.88
25.35
1.20 se
24.07
129.00 se
0.00 se
105.50
22.10
28.80
28.80
46.01
46.01
0.00
12.25
0.00
5.34
0.00
7.27
0.00
d Sewer Co
East Otay Me
ewer neration Rate d/acre)
TotaFlo
1,500
1,500
1,500
1,500
865
865
865
865
865
865
865
865
865
865
1,500
ee note 6
865
ee note 7
ee note 8
1,000
1,000
865
865
1,000
1,000
0
865
0
1,000
0
865
0
ollection Sys
esa Sewer ServicSewer Mast
Januar
al Sewer ow (gpd)
S(
17,325
17,370
17,400
17,415
3,460
3,062
76,032
13,165
3,304
3,062
19,532
16,876
38,700
55,576
5,277
2,638
7,681
38,025
288
20,821
15,000
1,250
105,500
22,100
24,912
24,912
46,010
46,010
0
10,596
0
5,340
0
6,289
0
stem
ce Area er Plan ry 2013
Sewer EDUs)
72
72
73
73
14
13
317
55
14
13
81
70
161
232
22
11
32
158
1.2
87
63
5
440
92
104
104
192
192
0
44
0
22
0
26
0
Developer / O
U.S. of Americ
Rancho Vista
Otay Internatio
D&D Landhold
Rancho Vista
Rancho Vista
Rancho Vista
Otay Mesa Pr
Otay Internatio
Kearny Otay C
U.S. of Americ
San Diego Ga
Otay Water Di
U.S. of Americ
Subtotal EOM
Subtotal (OM
TOTAL
Notes: 1. Pio Pico En2. Calpine Ene3. CCA Prison4. RJ Donovanacreages, flow5. Pilot Travel 6. Sheriff Subs7. Border Cros8. CVEF assu9. 1 Sewer ED
Owner
ca
Del Mar
onal LLC
dings
Del Mar
Del Mar
Del Mar
operty LP
onal LLC
Crossings
ca
as & Electric
istrict
ca
M-6
MTS)
nergy Center asergy Plant flown sewer flows bn State Prison
ws, and EDUs fflows based o
station flows bassing assumedmed 50 emplo
DU is based on
Table 4-3
Basin I
EOM-1
EOM-2
EOM-3
EOM-4
EOM-5
EOM-6
Total
Note: P
Border Z
Mixed In
Mixed In
Open S
Mixed In
Mixed In
Mixed In
Mixed In
Mixed In
Mixed In
Border Z
Utility P
Water L
Border Z
ssumes 1 restrws based on recbased on draft Sand East Mesa
from these facin recent meterased on recent
d 600 employeeyees at 25 gpc
n County ordina
Basin Fl
D
rojected Avera
H
Land Use
Zone
ndustrial
ndustrial
pace
ndustrial
ndustrial
ndustrial
ndustrial
ndustrial
ndustrial
Zone
urposes
Lines
Zone
room. cent meter dataSAMP informaa Detention Falities are not inr data. t meter data. es at 25 gpcd.cd. ance of 240 gpd
ow Compar
CitMP F
age Buildout Flo
Hydraulic A
4-8
DevelArea (
a. tion.
acility are not inncluded in the t
d/EDU.
rison to City
ty OMTSFlow (mgd)
1.00
1.00
0.50
0.00
0.50
1.00
4.00
ow (mgd) for E
Analysis and
opable (acres)
SGen
R(gp
0.00
16.00
18.00
0.00
12.00
8.00
18.40
33.64
18.00
11.50
0.00
0.00
0.00
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635.3
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ncluded in the Etotals.
y OMTS Ma
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East Otay Me
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1,000
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1,000
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1
1
East Otay Mesa
aster Plan U
ted Average ut Flow (mgd)
0.60
0.51
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drain to OMTS
ollection Sys
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a Sanitation Di
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Sewer EDUs)
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4,934
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istrict and
Basin EO
Basin EOCCA prisexisting Rbasin buOtay Me0.60 mgdarea. Thito the Otinto the Jtotal avapercent fthe 16 m
The Citybasin flow
Basin EO
Basin EOneighborbasin is sFaraday total aveat the int
The Citydeterminthe buildo
Basin EO
Basin EOsouth of Enrico Femgd, or alignmenat the so
The Citydeterminthe buildo
Basin EO
Basin EOAirway Rconsists at buildocorner of
OM-1
OM-1 consisson developR.J. Donovat are not a psa Road. Thd at buildoutis basin contay Valley TJohnson Canilable capacfull. Peak flogd limit in th
y’s OMTS Mw will drain t
OM-2
OM-2 consisring businessituated nortDrive to therage flow ofersection of
y’s OMTS Med that the out condition
OM-3
OM-3 includOtay Mesa
ermi Road. T317 EDUs
nt, the basin uthwest corn
y’s OMTS Med that the out flows fro
OM-4
OM-4 includRoad, east oof 23 acres ut. The basif the develop
sts of appropment, genean State Prispart of the Shis basin wit, approximanects to therunk Sewernyon line for
city in the Joow from the he line. Ther
Model includeto the OMTS
sts of the pss park, andth of Otay Me east. Thisf 0.51 mgd. Otay Mesa
Model includCity’s down
n flows from
des the propa Road to tThe total ess. Based on
collection sner of the de
Model includeCity’s down
om Basin EO
es the Airwaof Vann Ceof light indu
in is plannedpment.
H
oximately 39eral and mison and the
SSA’s servicll include ap
ately 34 perc existing “Pr. The existinr a total bashnson CanyEOM-1 bas
efore, furthe
ed 1 mgd oS system.
proposed Sud light indusMesa Road b basin will iThe basin isRoad and P
ded 1 mgd nstream infr Basin EOM
posed Dillardhe future Stimated buildn site plannystem is proevelopment.
ed 0.5 mgdnstream infr
OM-3.
ay Businessenter Road ustrial develod to connect
Hydraulic A
4-9
90 developaixed industr County’s D
ce area. Thepproximatelycent of the torison Line” inng prisons ain EOM-1 av
yon Sewer issin at buildoer analysis w
f flow for th
unroad Techtrial uses fobetween Pipnclude apprs connected
Piper Ranch
of flow at trastructure h
M-2.
d/Roll 80-acSR-11 right-odout demanning to accoposed to co
of flow at rastructure h
s Center locand west oopment for at to the exis
Analysis and
able acres orial and bus
Detention Fae majority of y 2,515 EDUotal flows fron Johnson C
add an additverage flow s approximatout would towas not requ
his basin. No
h Center aror a total baper Ranch Rroximately 2d to the City Road.
his connecthas sufficien
cre businessof-way and d for this de
commodate onnect to an
this connechas sufficien
ated south oof Michael Fa total demating City sew
d Sewer Co
East Otay Me
of a power gsiness park cilities are lothe basin is
Us for a totaom the East Canyon, whicional 0.87 mof 1.47 mgdtely 16 mgd tal 2.5 mgdired.
one of the p
ea, businesasin area of
Road to the w2,145 EDUs
of San Dieg
tion point. Tnt capacity t
s park. The from Vann
evelopment athe future
existing 10-
ction point. Tnt capacity t
of the futureFaraday Drivand of 0.02 wer system
ollection Sys
esa Sewer ServicSewer Mast
Januar
generating pland uses.
ocated withis located nol average floOtay Mesa sch conveys
mgd averaged at buildout
when flowin, much less
projected EO
ss park use,360 acres.
west and Micat buildout
go sewer sy
Therefore, itto accommo
basin is locCenter Roa
and basin isSR-11 roa
-inch sewer
Therefore, itto accommo
e SR-11, nove. The promgd or 81 Eat the south
stem
ce Area er Plan ry 2013
plant, The n the rth of ow of study flows
e flow t. The ng 75
than
OM-1
, and This
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ystem
t was odate
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s 0.08 dway main
t was odate
rth of operty EDUs hwest
The City’s OMTS Model did not include any County flows at this connection point. However, it was determined that the City’s downstream infrastructure has sufficientaccommodate the flows from Basin EOMinflow from the City.
Basin EOM-5
Basin EOM-5 consists of 64 acres of light industrial land uses. Demands for this basin were estimated at 0.06 mgd or 232 EDUs at buildout. This basin will connect to the City’s existing 12inch sewer main at the intersection of Enrico Fermi and Airway Roads.
The City’s OMTS Model included 0.5 determined that the City’s downstream infrastructure has sufficient capacity to accommodate the buildout flows from Basin EOM
Basin EOM-6
Basin EOM-6 generally encompasses parcels located within Subarea II, which includes the proposed Otay Crossings Commerce Park (OCCPuses, as well as light industrial and business park land uses. Additional planning includes a third border crossing. Due to large lot zoning requirements, it was assumed that a majority of the residential development area would use septic systems for wastewater disposal. The total projected buildout flow for the basin is 0.52 pumped area, with one pump station located in the proposed Otay Business Park near the intersection of Alta Road and Via de la Amistad as shown on Figure 4station may be required for the Border Crossing property, which would likelconnect to the gravity system on the OCCP property, and then gravity sewer at Enrico Fermi and Via de la Amistad.
The City’s OMTS Model included 1 determined that the City’s downstream infrastructure has sufficient capacity to accommodate the flows from Basin EOM-6 for buildout conditions. The OMTS Refinement OMTS Model to include this flow under downstream facilities have adequate capacity to accommodate the additional County flows.
4.4.2 Summary
Buildout average flows into the Otay Mesa Trunk Sewer from connections EOMEOM-6 will total 1.18 mgd at buildout, or approximatelyOtay Mesa SSA. The OMTS Master Plan Update assumed a onebetween the two basins. The flows were analyzed as part of this study and it was determined that the downstream City facilitiessystems at the proposed connection points have adequate capacity Refinement Report.
4.5 Sewer System Facilities
The major components of the collection system will consist of PVC pipfrom 10-inch to 15-inch. The proposed backbone system, including the pump stations, is shown on Figure 4-1 and all projects shall be funded by the developer. A reimbursement agreement
Hydraulic Analysis and Sewer Collection System
4-10 East Otay Mesa Sewer Servic
The City’s OMTS Model did not include any County flows at this connection point. However, it was determined that the City’s downstream infrastructure has sufficientaccommodate the flows from Basin EOM-4 due to the steep slopes of the piping and minimal
5 consists of 64 acres of light industrial land uses. Demands for this basin were or 232 EDUs at buildout. This basin will connect to the City’s existing 12
inch sewer main at the intersection of Enrico Fermi and Airway Roads.
The City’s OMTS Model included 0.5 mgd of flow at this connection point. Therefore, it was City’s downstream infrastructure has sufficient capacity to accommodate
the buildout flows from Basin EOM-5.
6 generally encompasses parcels located within Subarea II, which includes the proposed Otay Crossings Commerce Park (OCCP) and Paragon Business Park mixed industrial uses, as well as light industrial and business park land uses. Additional planning includes a third
large lot zoning requirements, it was assumed that a majority of the residential development area would use septic systems for wastewater disposal. The total projected buildout flow for the basin is 0.52 mgd or 2,159 EDUs. This basin will include a pumped area, with one pump station located in the proposed Otay Business Park near the intersection of Alta Road and Via de la Amistad as shown on Figure 4-1. A second private pump station may be required for the Border Crossing property, which would likely be pumped north to connect to the gravity system on the OCCP property, and then conveyed to the City’s existing gravity sewer at Enrico Fermi and Via de la Amistad.
The City’s OMTS Model included 1 mgd of flow at this connection point. Therefore, it was determined that the City’s downstream infrastructure has sufficient capacity to accommodate
6 for buildout conditions. The OMTS Refinement Reportflow under buildout conditions and it was determined that the
downstream facilities have adequate capacity to accommodate the additional County flows.
Buildout average flows into the Otay Mesa Trunk Sewer from connections EOMat buildout, or approximately two-thirds of the total flow from the East
A. The OMTS Master Plan Update assumed a one-fourth, threebetween the two basins. The flows were analyzed as part of this study and it was determined that the downstream City facilities for both the Otay Valley and Otay Mesa Trunk Sewer systems at the proposed connection points have adequate capacity as presented in the OMTS
Sewer System Facilities
The major components of the collection system will consist of PVC pipe varying in diameter inch. The proposed backbone system, including the pump stations, is shown
projects shall be funded by the developer. A reimbursement agreement
Hydraulic Analysis and Sewer Collection System
East Otay Mesa Sewer Service Area Sewer Master Plan
January 2013
The City’s OMTS Model did not include any County flows at this connection point. However, it was determined that the City’s downstream infrastructure has sufficient capacity to
4 due to the steep slopes of the piping and minimal
5 consists of 64 acres of light industrial land uses. Demands for this basin were or 232 EDUs at buildout. This basin will connect to the City’s existing 12-
of flow at this connection point. Therefore, it was City’s downstream infrastructure has sufficient capacity to accommodate
6 generally encompasses parcels located within Subarea II, which includes the ) and Paragon Business Park mixed industrial
uses, as well as light industrial and business park land uses. Additional planning includes a third large lot zoning requirements, it was assumed that a majority of the
residential development area would use septic systems for wastewater disposal. The total or 2,159 EDUs. This basin will include a small
pumped area, with one pump station located in the proposed Otay Business Park near the 1. A second private pump
y be pumped north to the City’s existing
of flow at this connection point. Therefore, it was determined that the City’s downstream infrastructure has sufficient capacity to accommodate
Report adjusted the etermined that the
downstream facilities have adequate capacity to accommodate the additional County flows.
Buildout average flows into the Otay Mesa Trunk Sewer from connections EOM-2 through thirds of the total flow from the East
fourth, three-fourths split between the two basins. The flows were analyzed as part of this study and it was determined
for both the Otay Valley and Otay Mesa Trunk Sewer as presented in the OMTS
e varying in diameter inch. The proposed backbone system, including the pump stations, is shown
projects shall be funded by the developer. A reimbursement agreement
may be established between all the benefiting devemay be administered by the County. The County will not participate in the costs of these facilities.
4.6 City of San Diego Regional Sewerage Facilities
The East Otay Mesa sewer system will connect to both the City of SOtay Valley trunk sewer systems. As discussed in Section 4.4, approximately twoultimate flows generated within the SPA will be conveyed to the Otay Mesa Trunk Sewer and one-third to the Otay Valley Trunk Sewer. ExistSPA are shown in Figure 4-2.
The ultimate Otay Mesa Trunk Sewer system will consist of gravity sewers and force mains located in Siempre Viva and Otay Mesa Roads that will connect to the San Ysidro and SoMetro Interceptors west of Interstate 5. Phase I of the OMTS has been constructed and includes a 27-inch to 30-inch diameter gravity sewer in Siempre Viva Road. Flows conveyed in this sewer are pumped on an interim basis to the existing Otay Valley Trunorth of the Otay Mesa SPA via a temporary pump station (SPS 23T) located at Siempre Viva and Cactus Roads.
As part of the OMTS Master Plan Update, hydraulic studies were conducted to evaluate capacity of the existing Otay Mesa seweThese studies assumed a phased buildout of the East Otay Mesa Planning based on SANDAG growth projections, with an average ultimate flow to the Otay Mesa Trunk Sewer of 3.0 Modeled peak d/D ratios for existing flows within the Phase I Otay Mesa Trunk Sewer in Siempre Viva Road were estimated less than 20 percent. Peak wettemporary pump station currently measure up to approximately 0.9 existing 3.0 mgd station capacity.
Future phases of the Otay Mesa Trunk Sewer system, which will extend the existing sewer westward in Otay Mesa Road, are currently in construction. The alignment and preliminary sizes of the trunk sewer and associated pump stations and forcOMTS Refinement Report. The basis of design used for the future trunk sewer phases assumed buildout of the SSA generating a total which has been refined in this study to County with some capacity contingency should a property develop more intensely and generate higher sewer flows than assumed.
The existing Otay Valley Trunk Sewer conlocated north of the SSA generally along the Otay River Valley. Flows generated in the northern portions of the SSA are conveyed to the trunk sewer via the 18Trunk Sewer. Capacity of the Otay Valley Trunk Sewer at buildout conditions was evaluated in the OMTS Master Plan Update. The evaluation assumed ultimate flows of 1.0 SSA to the trunk sewer, not including flows generated within the State and County Prisons thaalso flow to the Otay Valley Trunk Sewer.
Currently, the East Otay Mesa SSA has a total of 1.0 Metro conveyance and treatment system. Based on a projected average buildout flow rate of 1.79 mgd, the County will need to acquire an additional 0.79 buildout of the SSA.
Hydraulic Analysis and Sewer Collection System
4-11 East Otay Mesa Sewer Servic
be established between all the benefiting developments within each respective basin and be administered by the County. The County will not participate in the costs of these
City of San Diego Regional Sewerage Facilities
The East Otay Mesa sewer system will connect to both the City of San Diego’s Otay Mesa and Otay Valley trunk sewer systems. As discussed in Section 4.4, approximately twoultimate flows generated within the SPA will be conveyed to the Otay Mesa Trunk Sewer and
third to the Otay Valley Trunk Sewer. Existing and planned City facilities that will serve the
The ultimate Otay Mesa Trunk Sewer system will consist of gravity sewers and force mains located in Siempre Viva and Otay Mesa Roads that will connect to the San Ysidro and SoMetro Interceptors west of Interstate 5. Phase I of the OMTS has been constructed and includes
inch diameter gravity sewer in Siempre Viva Road. Flows conveyed in this sewer are pumped on an interim basis to the existing Otay Valley Trunk Sewer system located north of the Otay Mesa SPA via a temporary pump station (SPS 23T) located at Siempre Viva
As part of the OMTS Master Plan Update, hydraulic studies were conducted to evaluate capacity of the existing Otay Mesa sewer system and to size future phases of the system. These studies assumed a phased buildout of the East Otay Mesa Planning based on SANDAG growth projections, with an average ultimate flow to the Otay Mesa Trunk Sewer of 3.0
existing flows within the Phase I Otay Mesa Trunk Sewer in Siempre Viva Road were estimated less than 20 percent. Peak wet-weather inflows to the temporary pump station currently measure up to approximately 0.9 mgd, or 30 percent of the
ation capacity.
Future phases of the Otay Mesa Trunk Sewer system, which will extend the existing sewer westward in Otay Mesa Road, are currently in construction. The alignment and preliminary sizes of the trunk sewer and associated pump stations and force mains were developed as part of the
. The basis of design used for the future trunk sewer phases assumed A generating a total average flow to the Otay Mesa Trunk Sewer of 3.0
which has been refined in this study to 1.2 mgd (EOM-2 through EOM-6). This provides the County with some capacity contingency should a property develop more intensely and generate higher sewer flows than assumed.
The existing Otay Valley Trunk Sewer consists of a 21-inch to 33-inch diameter trunk sewer A generally along the Otay River Valley. Flows generated in the northern
A are conveyed to the trunk sewer via the 18-inch diameter Johnson Canyon city of the Otay Valley Trunk Sewer at buildout conditions was evaluated in
the OMTS Master Plan Update. The evaluation assumed ultimate flows of 1.0 A to the trunk sewer, not including flows generated within the State and County Prisons tha
also flow to the Otay Valley Trunk Sewer.
Currently, the East Otay Mesa SSA has a total of 1.0 mgd of capacity rights in the San Diego Metro conveyance and treatment system. Based on a projected average buildout flow rate of
ed to acquire an additional 0.79 mgd of Metro capacity prior to
Hydraulic Analysis and Sewer Collection System
East Otay Mesa Sewer Service Area Sewer Master Plan
January 2013
lopments within each respective basin and be administered by the County. The County will not participate in the costs of these
an Diego’s Otay Mesa and Otay Valley trunk sewer systems. As discussed in Section 4.4, approximately two-thirds of the ultimate flows generated within the SPA will be conveyed to the Otay Mesa Trunk Sewer and
ing and planned City facilities that will serve the
The ultimate Otay Mesa Trunk Sewer system will consist of gravity sewers and force mains located in Siempre Viva and Otay Mesa Roads that will connect to the San Ysidro and South Metro Interceptors west of Interstate 5. Phase I of the OMTS has been constructed and includes
inch diameter gravity sewer in Siempre Viva Road. Flows conveyed in this nk Sewer system located
north of the Otay Mesa SPA via a temporary pump station (SPS 23T) located at Siempre Viva
As part of the OMTS Master Plan Update, hydraulic studies were conducted to evaluate r system and to size future phases of the system.
These studies assumed a phased buildout of the East Otay Mesa Planning based on SANDAG growth projections, with an average ultimate flow to the Otay Mesa Trunk Sewer of 3.0 mgd.
existing flows within the Phase I Otay Mesa Trunk Sewer in weather inflows to the , or 30 percent of the
Future phases of the Otay Mesa Trunk Sewer system, which will extend the existing sewer westward in Otay Mesa Road, are currently in construction. The alignment and preliminary sizes
e mains were developed as part of the . The basis of design used for the future trunk sewer phases assumed
flow to the Otay Mesa Trunk Sewer of 3.0 mgd, This provides the
County with some capacity contingency should a property develop more intensely and generate
inch diameter trunk sewer A generally along the Otay River Valley. Flows generated in the northern
inch diameter Johnson Canyon city of the Otay Valley Trunk Sewer at buildout conditions was evaluated in
the OMTS Master Plan Update. The evaluation assumed ultimate flows of 1.0 mgd from the A to the trunk sewer, not including flows generated within the State and County Prisons that
of capacity rights in the San Diego Metro conveyance and treatment system. Based on a projected average buildout flow rate of
of Metro capacity prior to
4.7 S
The Citysystem. T
E
E
E
E
E
E
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T(
(
Summary o
y of San DieThe followin
EOM-1: “Pris
EOM-2: Otay
EOM-2A:
EOM-3: SR-1
EOM-4: Airwa
EOM-5: Airwa
EOM-5A:
EOM-6: Via d
Tab
Basin
EOM-1(2)
EOM-2
EOM-3
EOM-4
EOM-5
EOM-6
Total (1) Peaking fac
equal to theDiego Wate
(2) EOM-1 tota
of Connect
ego desiresg connection
on” main (Jo
y Mesa Road
Zinzer Road
11 – invert 5
ay Road (Va
ay Road at E
Siempre Viv
de la Amista
ble 4-4 Ea
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ctor based on Ce average flow er and Sewer Gal basin flow inc
H
ions to Cit
s a limited nn points hav
ohnson Can
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d and SR 12
38.9
ann Center R
Enrico Ferm
va Road and
d – invert 50
ast Otay Mes
erage Flow (m
1.47
0.51
0.08
0.02
0.06
0.52
2.66
City of San Dietimes the peak
Guidelines. cludes 0.87 mg
Hydraulic A
4-12
ty System
number of fve been iden
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Ranch Road
25 – invert 4
Road) - inve
i – invert 56
d Enrico Fer
07.3
sa Basin Bu
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gd from the exis
Analysis and
future Countntified in this
rt 351.98
d – invert 48
94.99
rt 586.28
5.73
rmi Drive – in
uildout Flow
ng Factor(1)
1.68
1.94
2.51
3.01
2.62
1.94
1.56
uation. The sufer to Figure 1-
sting prisons.
d Sewer Co
East Otay Me
ty connectiostudy:
7.89
nvert 547.22
w Summary
Peak Flow
2.48
1.00
0.19
0.06
0.15
1.00
4.14
m of all peak fl-1 of the City of
ollection Sys
esa Sewer ServicSewer Mast
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ons into the
2
y
w (mgd)
8
0
9
6
5
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lows is not f San
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e City
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South Metro Interceptor
Otay Valley Trunk Sewer
San Ysidro Interceptor
Future Phase 2Otay Mesa Trunk Sewer
Interim Connectionto Otay Valley
Existing Phase 1Otay Mesa Trunk Sewer
��
Existing OMTSPump Station
Johnson Canyon TS
Salt Creek Interceptor
CHULA VISTA
SAN DIEGO
S.D. COUNTY
CORONADO
IMPERIAL BEACH
NATIONAL CITY
S.D. COUNTY
S.D. COUNTY
NATIONAL CITY
S.D. COUNTY
SAN DIEGO
S.D. COUNTY
SAN DIEGO
EOM-6
EOM-5EOM-4
EOM-3
EOM-2
EOM-1
EOM-5A
EOM-2A
Imagery: Landiscor, January 2003
East Otay Mesa Sewer Master Plan Update
12/7/2012 LH SD Z:\Projects\IS\EastOtayMesa\mxd\EOM_SDRegSewerSystem_F4-2.mxd
January 2013
FIGURE 4-2
CITY OF SAN DIEGO
REGIONAL SEWER SYSTEM
Municipal Boundary
Project Boundary
!!8 Connection Point
Offsite Sewer (County)
Existing Phase 1 Otay Mesa Trunk Sewer
Future Phase 2 Otay Mesa Trunk Sewer
Interim Connection to Otay Valley
Otay Valley Trunk Sewer
San Ysidro Interceptor
South Metro Interceptor
Salt Creek Interceptor
0 1
Miles
¯
CHAPINSTIT
The Easthave a hand SR 1East Otaincreasedsection inMesa sew
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ty completee the ability tme, each sewed that unde
ngoing seweimprovemen
niform rate wplans to updysis. Sewe
City of San D
llected a seosal to the Mt Otay Mesahe system. 0 for each E
of San Diego
5-2
service. Reormation Com
d of SupervisSpring Valledistricts (inc
he remaininthe Campo
es), to rena, and to takingle entity.
nty sewer cureplacementh as East Ocity and a p
es
sewer served by local ewer Servicbursement Aer equivalen
ed a finanto shift to a wer district er a single u
er operationsnt projects.
was adopteate and ado
er rates are Diego’s Metro
ewer capaciMetro sewer a Sewer MaCurrently, a
EDU must bo charges $4
Institut
organizationmmittee (LAF
sors adoptey Sanitationcluding Eastng sanitatio Sewer and me the Spri
ke such acti
ustomers a t and rehab
Otay Mesa, apotential ab
vice maintenarea ordinace ChargesAgreementsnt dwelling u
cial feasibisingle unifohad varying
uniform resids and mainte
d for resideopt a new Dis
dependent o wastewate
ty fee to prsystem. Th
aintenance Dat the time obe paid by t4,124 per ED
tional and F
East Otay Me
s for the sewFCO).
ed Resolution District to at Otay Mesaon districts
Water Maining Valley Son as is ne
more uniforilitation sew
an added beility to finan
ance areas ance. For Es, Capacitys and Requinit (EDU).
lity report orm sewer rag sewer ratedential rate cenance requ
ential develostrict sewer on many f
er treatment
rimarily fundhe fee has nDistrict, althoof a connecthe develope
DU for a sim
Financial Up
esa Sewer ServicSewer Mast
Januar
wer districts
n No. 10-03annex all Coa) into the S
and all sntenance DisSanitation Decessary to
rm and stabwer projects.enefit of thence major ca
and districtsEast Otay My Fees, Seirements” fo
as part ofate for all Cos, including could be adouirements as
opment baserate case, b
factors, inclucosts.
d regional snot been updough there tion to the ser/applicant.ilar connecti
pdate
ce Area er Plan ry 2013
were
32 for ounty
Spring sewer strict, istrict have
ilized For
e new apital
s had Mesa, ervice or the
f the ounty East
opted s well
ed on based uding
sewer dated have
sewer For ion in
An EDU EDU is ewestern
The Uniresidentiadevelopmassignmefor areasSection 5warehou1,000 sqindustriapotentialCounty msquare fothe City o
It shouldprogramsretain maCity.
5.4 M
The Couservice aagreeme
OSaC
InaD
InSap
OM
In
Once theCity to al2001, the
is defined bequal to 240portion of Ot
form Seweral structures
ment is planents for nons within the 5.4.c. The Cse-type esta
quare feet. Tl buildings wly overstatemay want toootage to pluof San Diego
d be noted s in place foajor revenue
Metro Capa
unty securedarea from thents, and tran
On SeptembeSpring Valley
t a cost, inclCity of San D
n 1993 the Cside 1 mgd
District, which
n 1998 a ReSan Diego
greements, rogram, and
On May 12, Maintenance
n 2000, the C
e sewer caplow East Ote City of Sa
by the Unifor gallons pertay Mesa.
r Ordinances, which is imnned to be n-residential District is co
County curreablishments This normallywith limited the deman
o explore chumbing fixtuo.
that both thor the East Oe, job genera
acity and S
d sewer trehe City of Sansfers as su
er 17, 1991,y Sanitation luding intere
Diego’s Metro
City and Spd of Metro h itself was n
egional Wasand its pato provide
d to establish
1999, the BDistrict to p
City transfer
acity was traay Mesa to
an Diego an
rm Sewer Or day, where
e also inclumportant fornon-residentstructures, isommercial, pently assign
on a squary works wesewer usag
nd the buildhanging the ure units for
he County aOtay Mesa arating, and re
Sewer Tran
atment andan Diego, th
ummarized in
the Board oDistrict and
est of $2,811o system.
ring Valley Scapacity fornot establish
stewater Disarticipating capacity rig
h a system o
Board of Surovide sewa
red the 1 mg
ansferred todischarge ad East Otay
5-3
Ordinance Noeas the City
udes the asr the East Otial. A copys included inprofessionals EDU’s to re footage bll for small cge assigninging is actuaway they athe District,
and the Cityrea. The purevitalization
nsportation
disposal chrough a sen chronologi
of Supervisothe City of N,591, for wa
Sanitation Dr the futurehed until 199
sposal Agreeagencies
ghts into theof charges.
upervisors eage collectio
gd capacity f
o East Otay n average a
y Mesa ente
Institut
o. 9275 accoof San Dieg
ssignment oOtay Mesa sy of Sectionn Appendix Al and industcommercial
basis with ocommercial g EDU’s baally placing assign indus
the latter m
y have busirpose of theprojects thr
n
apacity for ries of formcal order be
ors approvedNational Cityastewater tre
District entere East Otay99
ement was to replace e Metro sys
established n to the Eas
from Spring
Mesa, this lannual flow oered into an
tional and F
East Otay Me
ording to lango uses 280
of sewer caewer are as 5.4, which A. Since therial building l, profession
one EDU asbuildings ho
ased on squon the sewtrial/commeethod is use
ness and inse programsroughout the
the East Oer sanitation
elow:
d an agreemy for the purceatment cap
red into an ay Mesa Sew
entered intoexisting s
stem, to est
the East Otst Otay Mesa
Valley to Ea
ed to an agof 1 mgd. O
agreement
Financial Up
esa Sewer ServicSewer Mast
Januar
nd use type.gpd/EDU fo
apacity for s nearly all f
shows the e planned zowe will focu
nal and indussessed for owever, for uare footagewer system.
rcial EDU’s ed extensive
ndustry inces is to attrace County an
Otay Mesa sn district act
ment betweechase of 1.0acity rights i
agreement twer Mainten
o with the Csewage disptablish a fun
tay Mesa Sa area.
ast Otay Me
reement witOn Septembe
that outline
pdate
ce Area er Plan ry 2013
One or the
non-future EDU
oning us on ustrial each large
e can The from
ely by
entive ct and d the
sewer tions,
en the 0 mgd in the
to set nance
City of posal nding
Sewer
sa.
th the er 10, es the
terms ofAgreeme
The Tratransportdistance capacity Trunk STransporsewer sy
It shouldcontractsparticipattransport
5.5 D
In additioreimbursavailablecapacity connectsreimbursthe Priso
In additioprivate dto establto be puSewer isTable 5-1
Based onPark areunused aoptions to
The Marcthe right “shall be of the Cactually can contjustificatiimprovem
f sewage traent.
ansportation ted from Eastraveled in was assum
Sewer and rtation capacystem.
d be noted s with all ofting agencietation costs
Developme
on to capacsement agree capacity on
charges ares to the Otasement chargon Line and O
on, since thevelopers aish reserve mped to fros completed1.
n a review oeas have deand availabo transfer or
ch 1984 Otato 1.6 mgdappurtenanity and OIChave an expinue to colleon that tha
ments.
ansportation
Agreemenst Otay Mes
miles, hencmed to be dis
the remaincity to the C
that the Cf the particies or adoptrise in the ne
ent Reimbu
city fees theeements ann a short tere due to theay Valley ages for eitheOtay Valley
e 1980s, thnd neighborcapacity in t
om the Otayd. A summa
of actual deveveloped at le capacity. r sell excess
ay Mesa Sewd capacity unt to the landC. In additiopiration dateect the fee aat the fee re
n. Appendi
nt includes a to the Metceforth refestributed sucning two tCity is based
ity of San ipating agented by the ear future.
ursment Ag
e East Otaynd contractem basis. See City of Sand Otay Me
er the Otay ITrunk Sewe
e City has aring governmthe system.
y Mesa Draiary of the k
velopment ilevels far be Based on
s capacity, b
wer Construcpon OIC’s c
d” and cannoon, the Otaye of July 1, and deposit iemains and
5-4
ix E Include
charges btro sewer syrred to as Mch that a thihirds flows d on an ass
Diego is prncies. AlthoCity, East O
greements
y Mesa areed user caection 5 of than Diego foresa Trunk nternational
er. These are
actually entemental agenc
Some of thnage Basin known agre
n Otay Meselow the ca
n a review out this canno
ction Agreemconstruction ot be assigney Mesa Trun2006 for reit in City sewd be used t
Institut
es the East
based on tystem as meMG-miles. ird of the flo
into the umption tha
roposing to ugh it has Otay Mesa
ea is also sapacity agrehe Transporr each EDU Sewers. Thl Center (OICe included in
ered into a cies on behahese agreem
temporarilyements by
a, the OIC aapacity citedof the agreeot occur with
ment, includof the sewe
ed to other lnk Sewer R
eimbursemenwer funds. Ito help fun
tional and F
East Otay Me
t Otay Mesa
the volumeasured in mThe 1 mgd
ow goes intoOtay Mesa
at capacity is
update thenot been ashould exp
subject to seeements thartation Agreewithin East
hese chargeC) Line and n Appendix E
number of alf of develo
ments allow fy, until the O
sewer basi
area and Ot in the Agre
ements it aphout the app
ed in Appener and thesands withou
Reimbursemnt to OIC, ht appears thd Otay Mes
Financial Up
esa Sewer ServicSewer Mast
Januar
a Transport
of wastewmillion gallons
of Metro so the Otay Va Trunk Ses available i
eir transportagreed to bypect to see
everal deveat could imement statest Otay Mesaes are deve
Pump StatiE for referen
agreementspment that sfor sewage
Otay Mesa Tin is include
tay Rio Buseements, leappears thereproval of the
ndix E grantse capacity r
ut mutual conent Agreem
however, thehat the City’ssa Trunk S
pdate
ce Area er Plan ry 2013
tation
water s and sewer Valley ewer. n the
tation y the their
eloper mpact s that a that eloper on or
nce.
s with serve flows
Trunk ed in
iness aving e are City.
s OIC rights nsent
ments, e City s has
Sewer
Sewage A
Otay Valle
CDC Califo
SD County
Otay Rio B
Otay Mesa
Otay Intern
Bold numb(1) 1 EDU (2) Agreem
compen(3) Include(4) Agreem
request(5) OIC pe
Based onTrunk Scapacitiecontractelimitationterm plarecomme
The Couinch JohMesa thaTPO, LLsewer wathe cost which stithe Coun
It is anticinclude afor cost r
5.6 C
The Otaysystem uterm duefrom the pumping the west
Table 5-1
Agreement
ey Drainage Ba
ornia State Pris
y East Mesa De
Business Park (
a Drainage Ba
national Center
bers are those = 280 gpd (City
ment specifies mnsation, if requs Coors Amph
ment specifies mted and City apak flow calcula
n recent disSewer systees, however,ed capacitiens. As a resan to identifendations of
nty first extehnson Canyoat drains to OLC and curreas built to ureimbursempulates a ch
nty and reim
cipated that a trunk sewerecovery.
Community
y Mesa Truupgrades in e to contract
report (Appand conveyto a connec
Summar
asin
son
etention Facility
(Chula Vista)(3,4
asin
r (OIC)
cited in the resy of San Diegomaximum capaested and Cityitheater, Knott'maximum capapproves ated by using th
scussions wiem, based there appe
es (primarilyult, the City fy deficiencf this study h
ended seweon Trunk SeOtay Valley. ently servesultimate con
ment for the harge of $84bursed direc
developmeer and sewe
y Facilities
unk Sewer Rthe Otay Me
ted capacitypendix A) illuyance capaction to the e
ry of Existin
San DieDocumen
RR-263
y(2) RR-2744) RR-274
RR-260
spective agreemo criteria) averaacity of 0.69 mgy approves 's Soak City anacity of 0.519 m
he 1998 City of
ith the City on existing
ears to be sey OIC flowcommission
cies resultinhave led to th
r service to ewer to pro The sewer
s the Calpinditions the design and
40 per EDU ctly to the De
ent to the soer pump stat
District fo
Refinement esa sewer b
y and to meeustrates the bilities from existing San
5-5
ng City of Sa
ego nt No. Dat
3922 8/19/1
4348 9/11/1
4368 9/11/1
0277 3/12/1
ments, others aage daily flow =gd average and
nd Chula Vista mgd average an
f SD Sewer De
there is avag flows andegments of t
ws) are incned the OMTg from thehe soon-to-b
East Otay Movide service
was designne Power PlDeveloper econstructionto connect teveloper.
outh, drainintion will dev
or Otay Mes
and Phasinbasin to mitiet increasedproposed sethe City’s O
n Ysidro Tru
Institut
an Diego Se
te EDU(1)
985 2,950
989 750
989 1,520
984 5,714
are calculated= 3.5 people d 2.03 cfs (1.31
Auto Park nd 1.715 cfs pe
esign Guide Pe
ailable capacd not includthe Otay Meluded the TS Refineme
e contractedbe formed C
Mesa througe for the noed and conslant and a fentered a ren. Appendixto the sewer
ng to Otay Mvelop similar
sa
ng Report regate for cap
d flows throuewer infrastrOtay Mesa nk Sewer. C
tional and F
East Otay Me
ewer Agree
Sewer C
Average
mgd c
0.826 1
0.21 0
0.4253 0
1.6 2
1 mgd) peak, fo
eak, for additio
aking factor =
city today inding contraesa sewer ssystem theent Report t
d flows. TFD describe
gh the constrorthern portistructed by tfew other u
eimbursemenx E includesr. The charg
Mesa sewer r reimbursem
ecommendepacity construgh the yearructure desigSewer PumCompletion
Financial Up
esa Sewer ServicSewer Mast
Januar
ments
Capacity
Pe
cfs mgd
.28 1.5
.33 0.52
.66 0.85
.48 2.4(5)
or additional
nal compensat
1.5
n the Otay Vacted agreesystem that were are capo develop a he findings
ed in Section
ruction of thon of East
the De La Fusers. Sincent agreemens the Agreemge is collecte
basin whicment agreem
ed several sraints in the r 2030. Figgned to enhp Station 23of these pro
pdate
ce Area er Plan ry 2013
eak
cfs
2.33
0.81
1.32
3.71
tion, if
Valley ement when pacity
near and
n 5.6.
e 18-Otay
uente e the nt for ment, ed by
h will ments
sewer near
ure 5 hance 3T to ojects
would suValley. trunk sys
Since thdevelopefacilities task forcto implemsewer sy
A CFD isfinancingbenefitingtax, to uissuing b
Based oindentifieCity and are varyiin the sosewers toonly haveestablishzone ma
The nexton contriof benefi
5.7 S
As part oin regaragreemegiven theagreemeCounty sto the Ccapacity
ubstantially cNo improve
stem was bu
he primary ers have joinare construe has been ment an assystem upgrad
s a special dg the acquisg the plannese that reve
bonds or incu
n the work ed and confi
County. It ing degrees
outheast poro flow througe a short se
hed to accoup showing fi
t steps will inbuting acrest and actual
Summary
of the formatrds to the ents, which e age of soment are revieshould requeCity of Chula
available fo
complete thements are rilt to handle
benefit areaned forces cted in a timdeveloped t
sessment disdes.
district formesition, constred communienue to finaurring debt to
to date aprmed by theis apparent of benefit to
rtion of Eastgh for servic
ection of gravunt for a nexive areas of
nclude actuas and flows. property as
tion of the Cimplementa
may impactme agreeme
ewed and roest that the Ca Vista to dr future grow
e Otay Mesarecommendebuild-out gr
a is develoto develop
mely mannerto work with strict known
ed by a sponruction, opety. The CFD
ance specifieo assist with
proximately e City througthat depend
o participatiot Otay Mesace. In contravity sewer rexus to obtainbenefit.
al determinat Note Tablesessment.
FD it is recoation and t the timing ents it may
olled into theCity review tdetermine if wth.
5-6
a Trunk Sewed in the Oravity flows.
pment on Oa financing r with develoa financial s
n as a CFD
nsoring locaration and m
D has the leged facilities h financing th
$20 milliongh the year
ding on a devn in the CFD
a has a systast, a parcelequired. Ton sewer serv
tion of benee 4-2 from th
ommended ththe implicaand need fsimplify sew
e new assesthe “contractthere are o
Institut
wer system Otay Valley T
Otay Mesa option to e
opment. Asspecialist anto collect pr
al governmemaintenancegal authorityand service
he facilities.
n in future c2030 to se
velopment’sD. For examtem of pum on the City
o that end, avice. Figure
fit of costs ahis report wil
hat the Counations of tfor system wer fee collessments, if at” terms of copportunities
tional and F
East Otay Me
and relieve Trunk Sewe
both the Censure that s a result a nd legal couroperty asse
nt agency foe of the puby to levy andes, and to b
capital upgrrve develop
s location in mple, a Counps, force mside, in the
a zone benefe 5-1 is a pr
assigned to el be used fo
nty work clohe existingupgrades. ections in thand where acapacity allocs to make n
Financial Up
esa Sewer ServicSewer Mast
Januar
capacity in r system as
County and backbone sproperty ownsel and theessments to
or the purpoblic infrastrud collect a spborrow mone
ades have ment in botOtay Mesa
nty parcel locains, and grsouth west,
fit area has reliminary be
each zone br the calcula
sely with the reimburseWhere poss
he future if tappropriate. cated to OICnew convey
pdate
ce Area er Plan ry 2013
Otay s that
City sewer wners’ e City
fund
ose of ucture pecial ey by
been h the there cated ravity , may been enefit
based ations
e City ement sible, those The
C and yance
TThis page in
5-8
tentionally le
Institut
eft blank.
tional and F
East Otay Me
Financial Up
esa Sewer ServicSewer Mast
Januar
pdate
ce Area er Plan ry 2013