Sewer Master Plan - San Diego County, California · Treatmen While the considere 17.503 m...

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 ..............

...................

...................

...................

...................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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...................ay Mesa .........................

esa Sewer ServicSewer Mast

Januar

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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 .........

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Cont


Januar

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tents


... 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


Januar


TThis page in

ii

tentionally le

eft blank.

East Otay Me

Acron


Januar

nyms


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


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


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


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


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


Januar

ound


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


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


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


Januar

s

acre)

Area


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


Januar

nd the San Yed developmresidential adid not influin Subarea

Area


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


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


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


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

is proposingation. The

ment the waestimates fro the prison i

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


Januar

areas surveonsequently.

reatment plaaring a Suber Plan willll also perfoent plant is o

ation


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


Januar

ation


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

Maxim

MinimCounc

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

ency in desig

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

to show apine alignme

4-1

D SEWE

tion system Diego’s infr

gn criteria wa

tion systemarea. Howevsed for the ang the City’s

*2945 Pop

e summarize

San Diego

0

Velocity 2

0

0

an Diego

ovided for aon County g

ned during mpproximate nts based on

R COLL

for the Eastrastructure was considere

, City of Saer, as discuarea based s dry weathe

1342.0

ed below in

Design Cri

Design Criteri

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


Januar

N SYSTE

a SPA is plarity of the sezing the prop

esign criteriaprevious secxisting watequation, wh

he service pment limitatmprovement

preliminaryplans.


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


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.



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


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


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


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


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


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


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


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


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

0.00

635.3

1,135

1,525

ncluded in the Etotals.

y OMTS Ma

ProjecBuildou

EOM-1 will not d

d Sewer Co

East Otay Me


TotaFlo

0

1,000

1,000

865

1,000

1,000

1,000

1,000

1,000

1,000

0

0

0

0

1

1

East Otay Mesa

aster Plan U

ted Average ut Flow (mgd)

0.60

0.51

0.08

0.02

0.06

0.52

1.79

drain to OMTS

ollection Sys


Januar

al Sewer ow (gpd)

S(

0

16,000

18,000

0

12,000

8,000

18,400

33,640

18,000

11,500

0

0

0

0

518,188

,184,233

,787,780

a Sanitation Di

Update

.

stem


Sewer EDUs)

0

67

75

0

50

33

77

140

75

48

0

0

0

0

2,159

4,934

7,449

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


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


plant, The n the rth of ow of study flows

e flow t. The ng 75

than

OM-1

, and This

chael for a

ystem

t was odate

cated ad to

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



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



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.



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



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

E

E

E

E

E

E

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

d and Piper R

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

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d Enrico Fer

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sa Basin Bu

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ego peaking eqking factor. Ref

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


Januar

ons into the

2

y

w (mgd)

8

0

9

6

5

0

4

lows is not f San

stem


e City

!!8

!!8

!!8

!!8 !!8

!!8

!!8

!!8

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A×

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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

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opment baserate case, b

factors, inclucosts.

d regional snot been updough there tion to the ser/applicant.ilar connecti

pdate


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


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


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


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


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


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


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


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


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


Januar

pdate


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