ALHAMBRA VALLEY/RELIEZ VALLEY/BRIONES | CONTEXT 1 G arr ity Creek

H io City of Hercules F u g l e R u l rank

t i l e f W l in i

a C H k o a a e r e o r n C r dr T y o Named after their bucolic surroundings, Alhambra Valley, Reliez Valley, and a t T ake o rn Whi psn b n e A c CA State r John Muir Land Trust R k Riding noldD Briones are three small communities that celebrate their close proximity C Trail and H C r

h D d iking Trail e Fernandez Ranch u Rode nt 4

ri o t e Cr r r Muir Rd s a

tie d G ee A a T to open space with rolling hills, wildlife, and seasonal creeks. The three R rr k L

ity o i v C n reek o John Muir e p a Tr B National ai a communities are situated in central Contra Costa County and border Briones l t t Historic Site T

r H a City of u eder John Muir i io City of Hercules F e l g l e F R u l rank

t i l e f W l in Hidden Lakes Open i Regional Park and East Bay Municipal Utility District land to the west. Land il a C Tra H l 1 Land Trust o a k a i C Martinez e r # re od r n o Space C r T T y r a Sky Ranch h a t ake o n r i psn b T e Wh n e A e l c V uses primarily consist of low or very low densityC Ahousing;Sta residentsr travel g s

te Rid n d a i e R k ng oldD d John Muir Land Trust i R Alhambra c

C T C a r a ail and H r R a

h D d iking Trail e ir

Fernandez Ranch d u n Cr Ro e t 4 e A e D

ri o t e r lha ek M to Martinez, PleasantCr Hill,r or Lafayette for goods and services,r and Mdouir notRd m a Valley T s e e b r tie d e A r r a o

R k L T P a i l

o i v r n e

o John Muir e Va A l o a l p lle Or l see a need to supplementT the B communitiesNational with commercial or office uses. ch h ra y a A il a Rd r t T a t r d v Historic Site a T m e r i R a City of l eder John Muir i b Fe l Hayfield Trail e Trail Hidden Lakes Open lie r l 1 Land Trust T Pi a i # C Martinez o n z Space e V a A multi-generational community,Sky Ranch manyh residents are retired or travel to y T A r o re van Trail T e d n e Di Ta a v T a e V l C b e

s l g o V R r l a a

d a l d e il a l i e

i R c n r i Alhambra a i

a r y

l e y

R a n T b a w

regionala employment hubs for work. They would like to see greater support o r il n ir n a

o m T T r C

t o R T r r e A e D a M k l

lh e o a r a k ole Cree h e p n m Pi k T l d a Valley T g e b r e i

r n r a a A r l

r a o

L City of

i a P m Briones

i a l C Hidden l r a for the aging population by providing accessible services and housing eto C Va A llo B Unincorporated Areas l O ri a le r l Santos Tr on Pon d Tra i l Pleasant Hill t c s y h h A H a es a i C Rd r a l l r gle o T d i en r r l C

i e a m v a Sp T Incorporated Cities

support aging in place. e a r s ra Gra

i a r y R T i son Rd

l l r T t e b t t Hayfield Trail s k T n l e a Reliez Valley n r

i r e o

r l Urban Limit Line l

e o Mo P T P a t tt i i C o n z C Briones

e V a ek

p s e

y T A r son Cr o r Trail O e Trail T

d n e avan a Regional Park y T v m n a

e Di n k r

T a u o C o Outside Urban Limit Line

blo e a ks i G k Tr V a

R r l r c r a

a H i l a Given the isolated location, residents area concerned aboutl emergency i O i s l a B i

i n r il e a D O l

a i ail e y r r T a l e y

n T b a w n k

o r n il r c u n n a a

o m T T r l T T a t o R T v B Parks, Protected Lands, and

a r r I l

k l

o a a B ole Cree h e y p n Pi k T l d a il g i a V

r e i l e Tr

l W n

a a A l a services and safety. There are many collapsed roadways and other road l

r ad l i

L City of l

i a

m e t

Briones a y Watersheds l C Hidden o h

a T

C V r B Unincorporated Areas R ail e r a s i Blvd Taylor o t Santos Tr n Pon d Tra i l Pleasant Hill o e r s H a es i C g n scen s i e l l r gle o r t Trails repair needs, which is especiallyi important ngivenr the heightened need for r o C Ri l e i d C i a e p Incorporated Cities g S T b r S e

a r s ra Gra B e Tra Ave

a r y A T i son Rd ld a il l r b

O o Hill Pleasant Rd T t t t T rg s k T n Existing Bikeways e a Reliez Valley r n r a

e o il

r l Urban Limit Line l

o Mo P t tt i C emergency access in C a high-fire risk area.Briones The communities are proud of reek

a ek Deer Creek C

p s e

r son Cr S on e ail T u s

O Tr Regional Park y n y

m n a Railroads e

n k r Tra i l r u o r o Outside Urban Limit Line i s i

a k a G k Tr s r c r a l e

H i a s i O T G D B O il r a rail e a T a n Fire Station #19 andn excited aboutk its recent reopening. However, residents il r k a c l u e T T e Creeks and Drainages v a B Parks, Protectedre Lands, and

r I l il B a y B C a il r e d

i a V r a e r T r r l T l a W C L

l ad ll i a ree ll a e t e e a Watersheds

o y h k R d se k

T B f c eye V s R are still concerned about the lackR of telecommunicationrai services and worry u il a Bu anc Schools l e R a y h T D s r V Taylor Blvd Taylor ra o T i e r k e l g n scen s iposa ea t City of i re t Trails r P t a

a e r o C Ri M ri S dg S e l b B e T A a ra ve l e A a il ai R about communication reliabilityld duringb an emergency. n Tr Springhill S O o Hill Pleasant Rd i Walnut Creek rg d Fire Stations w Tr P Existing Bikeways ge T p rin ail a Lauterwa ra g o Deer Creek bl sseCreek H il Tra i l h Acalanes S n o n on il o r un L Cree L Creyesk a l Tra i l r k ORailroads y e p R Ridge Open Space d D

i d r se y l ar p Tr mbard d b G y d ai S m V k l o a o

e Creeks and Drainages L al e DRAFTL e l City of r n ey C ail B 0 2 Rd r e d P City of

r a T r r C L ab

a ree ll lo Rd a

e Overview Map

k R d se k e Tr r Lafayette B s l f uc eye R a Ru i a B anc Schools il e Orinda a y h T D r r V n T e ail i iposa eak t City of r P t a Ma e Scale (Miles) Briones, Alhambra Valley, S M a l ail R e n Tr Springhill S id g p Walnut Creek Fire Stations w P Laute e Tr rin ab rwasser H ail Tra i l g o and Reliez Valley n lo hi Acalanes o r L Cre Ln Creek a ll ek O dy p R Ridge Open Space d D y l ar p mbard d b y d Source: Contra Costa County, 2018; PlaceWorks, 2019. 0 1 2 S m V Source: Contra Costa County, 2018; PlaceWorks, 2020. o a WHO o LIVES IN ALHAMBRA VALLEY/RELIEZ VALLEY/BRIONES?

L al L n ley Rd City of P ab City of lo T Rd Overview Map Miles rail er Lafayette n Orinda i Median Age Average Median RaceBriones, Alhambra Valley, M Life Expectancy Household Income 50 years old in ►►71% White and Reliez Valley 83 years old in $160,395 in Source: Contra Costa County, 2018; PlaceWorks, 2019.Alhambra Valley/Reliez 0 1 ►►27%2 Asian Valley/Briones Alhambra/Reliez/Briones Alhambra/Reliez/Briones Miles ► VS VS VS ►7% Black or African American 39 years old 81 years old $88,456 in in in Ethnicity Contra Contra Contra ► Costa Costa Costa ►10% Hispanic or County County County Latino

Photo by Deidra Dingman.

Re gio City of Hercules Fran f u klin e k C Cr ee an 4 Arn v y o A o ld n D o r l C l h Rd e r Rode City of r i o C o Muir Rd sti d re

e R ek Martinez M

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r a e e A k v| CONTEXT (CONTINUED) ALHAMBRA VALLEY/RELIEZ VALLEY/BRIONES e 2 d C R Alhambra h

ra e

i l e s

r M G Al e arr e Valley h

ity Creek Re gio City of Herculesa Fran o P f u m a klin e k C r e b v e Cr e r D an 4 Arn llo a y o A

o ld V r n D o r l A Hazards a l llC ey Rd R e h d r v r Rode City of e LANDSLIDE i o C Town of o Muir Rd sti d re

e R ek Martinez M

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a

r Moraga r

Agricultural pests and diseases (Briones) i t Alha

y m CenterAve b C r d r a e Landslides e A R k v

Drought n e o l d C Mapped landslides

t r R Alhambra h

ra e

eek i l

p Cr T le e s

P o r M in Al e

e Valley ha City of

m o Few large mapped landslides,

P m a r a b e Briones ra D llo Extreme heat o B

r V r t ione a lley Rd Pleasant HillA H s C ve but contains scattered small n re Town of a s Gra yMoragason Rd Flooding (Alhambra Valley) S t landslides and questionably- d T d Landslides R rl Reliez Valley

d

gio n k R identified larger landslides

City of Hercules l v o e Mapped landslides

u l R r r f F n Cre e

e t a o l

n eek s l p k le Cr T

k l P ino ay i C i B

e r v City of

e m n Few large mapped landslides, C r a C G h Briones A H Fog o B r

r r t i Areas of gentle slope at low o 4 n e ne A Pleasant Hill H a s o but contains scattered small C t d r l o n n e d l a l G s s ra n

S D R o yson Rd t landslides and questionably- e y r l y

a elevation that have little or T d

r Reliezl Valley l a

d

C R o y k a s identified larger landslides e e v n CreW l

o l

Human health hazards h n s l ey i a C a D lr r T B d R l G i h Ro e H no potential for landslides

r City of t r Areas of gentle slope at low o d a e e i h t d r C o o V M r Rd l u l r d i s s l n

e R t e i d z e y

e e M P a elevation that have little or a

R k R s Martinez y W a e e r a l T Incorporated Cities D s i sl A it no potential for landslides l a v Landslides eh e V r e d e l n R e z P o e r Incorporated Cities i i s R s A r e l ve Urban Limit LIne B ion e B r R CenterAve Urban Limit LIne A Seismic hazards Outside Urban Limit Line lh Outside Urban Limit Line B e ea a d Railroads

r C e r re e B D ek

e R m d G d V

a a a Railroads r rrity r Creeks and Drainages C ek Larkey Ln C l re b

e Severe storms re e D e

w k R r d a V o a d C S City of R o r ah A p rin Creeks and Drainages

L ute Larkey Ln

l Alhambra rw

a d D Sa e asser g

e r n h Walnut Creek

i P n l Cree ill

ablo re L k v y s w e lhC e ard R

Wildfire r A ak m mb e d

br o e o e a L S Valley V City of Hap City of City of o r P a d a pyVp in Landslide Map Lauterwa ll r R a r g Lafayette

d D S ss e e D a er y n Orinda ll h n n R i ey i Walnut Creek

P Cr r R l Briones,Source: California Alhambra Geologic Valley, Survey, 2008; Contra Costa County, 2018; ablo r L eek Md d l C ee rdy R k ba d PlaceWorks,and 2020. Reliez Valley

om L City of Source: US Geological Survey, 2018; Contra Costa County, 2018; PlaceWorks, 2019. City of Major Vulnerabilities City of Happ 0 1 2 d io yV Pleasant Hill Landslide Map

R R ug City of Hercules r Miles r e f a LafayetteF an e e k kli Orinda C ree l n v d in l C 4 Arn e a o A y n ld R o Briones, Alhambra Valley, y D M R r l

C d o l

Seniors and seniors living alone are vulnerablen to extreme heat, h n e

d r l Ro e R WILDFIRE o ri o d City of r C o t s r Muir Rd

tie d ee

eek R k Martinez M k and Reliez Valley p human health hazards, landslides, and wildfire. P ole Cr T e

in re

m C Source: US Geological Survey, 2018; Contraa Costa County, 2018;Briones PlaceWorks, 2019. yso n A o Br 0 1 rCa2enter ve t G ione A H s C lh n r a Persons living on single access roads, persons without access to a e m s Miles bGrayson Rd Wildfire Severity Zones S r d t C a d lifelines, and persons with disabilities are vulnerable to extreme heat, R AlhambraT h A

a r Relieze Valley r v i l l

v l e s Very High

r Alham e b e e ra flooding, landslides, seismic hazards, severe storms, and wildfire. Valley V B DRAFTP a eek a ll r

e D Cy R r son d r High

y o d

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r d R

y City of

Highway 4, Alhambra Valley Road, Reliez Valley Road, and Bear G l

R a Pleasant Hill Moderate l Creek Road are vulnerable to flooding, landslides, severe storms, and y T i d W R

l e i H

n l t Unincorporated Areas

l a o h t wildfires. r

t d V

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R i z sa re

m C a Briones r a yso n s o Br e s ra Incorporated Cities t i Av G on i e

e e H e s C l n n re l io a s e Grayson Rd Wildfire Severity Zones Agricultural operations in Briones are vulnerable to damage from r S t P n B Tr R Reliez Valley d Urban Limit Line L l v l Very High y B bard reek m agricultural pests and diseases. C r son High o

y o d

l e Outside Urban Limit Line L

r d R

G y l

R a Moderate l Be y W e T i a ll e i H

r C a th d UnincorporatedRailroads Areas r r t Briones Regional Park, chaparral and scrub habitat, woodland ehabitat,ek d V e

D a n Rd R z e s

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e

a e l

l n V io e Larkey Ln Creeks and Drainages P n

l and outdoor recreation are vulnerable to drought, extreme heat, r B R Urban Limit Line L e bardy w City of om landslides, severe storms, and wildfire. Outside Urban Limit Line L o B S City of o r Orinda ea p rin e Lauter r C d Railroads S wass reek g r D er

d D an Rd h Walnut Creeke a n i V P Cr l Larkey Ln Creeks and Drainages l eek l abl Le o Cre y R The information on this page presentse a summary of hazards anda rvulnerabilitiesd w City of k b o d S City of m o r Orinda p rin

o S Lauterwasser g L d D an h Walnut Creek 0 2 P n Creek City of ill in Alhambra Valley, Reliez Valley, and Briones based on the Contra Costa County ablo Cre Ha y L R e p ard k pmb d Rd o yV Wildfire Map er L a LafayetteHap City of Rd ll pyV Scale (Miles)Wildfire Map Vulnerability Assessment; please see the online Vulnerabilityin Assessment for er e a Lafayette n y ll i ey Briones, Alhambra Valley, M R R Briones, Alhambra Valley, M d d a full description of these hazards and vulnerabilities. Source: CALand FIRE, Reliezand 2007; Valley Contra Reliez Costa County, Valley 2018; PlaceWorks, 2020. Source: CalFire, 2018; Contra Costa County, 2018; PlaceWorks, 2019. 0 1 2

Source: CalFire, 2018; Contra Costa County, 2018; PlaceWorks, 2019. 0 1 Miles 2

Miles ALHAMBRA VALLEY/RELIEZ VALLEY/BRIONES | GUIDANCE 3

PLANNED LAND USE GUIDING PRINCIPLES

Land use designations for Alhambra Valley, Reliez Valley, and Briones are shown on the The following guiding principles articulate the values, priorities, and aspirations for the Land Use Map and defined in the Land Use Element. future shared by Alhambra Valley, Reliez Valley, and Briones community members:

Alhambra Valley, Reliez Valley, and Briones are planned primarily to maintain each 1. The private and sequestered lifestyle characteristic of the Alhambra Valley, Reliez community’s low or very low density housing and rural agricultural lands. There are no Valley, and Briones communities should be preserved and maintained. commercial areas located in Alhambra Valley, Reliez Valley, and Briones. 2. The existing balance between developed and rural land uses should be preserved.

3. The diversity of existing agricultural uses in the region, including vineyards, should be supported.

4. Residents of Alhambra Valley, Reliez Valley, and Briones who lack housing should have access to quality services. Vital, easy-to-access community programs related to homelessness, housing, and elderly services should be available. Residents who are at risk of losing housing should be protected from displacement.

Existing fire station in Briones. Existing agricultural uses in Briones. 5. The residents of Alhambra Valley, Reliez Valley, and Briones should have access to quality transportation, housing, and other services that accommodate their DRAFTmulti-generational community needs.

Existing single-family use in Alhambra Valley. Existing open space in Alhambra Valley. ALHAMBRA VALLEY/RELIEZ VALLEY/BRIONES | GUIDANCE (CONTINUED) 4

POLICIES ACTIONS 1. Continue adhering to the Briones Hills Agricultural Preservation Area compact, 1. Update the Alhambra Valley Specific Plan. which states that the jurisdictions (Contra Costa County and the cities of Martinez, Pleasant Hill, Walnut Creek, Lafayette, Orinda, Richmond, Pinole, and Hercules) voluntary agree not to annex any lands within the 64-square mile area for the purposes of allowing urban development (see Figure X-X). This rural area includes large properties owned by the East Bay Municipal Utility District and East Bay Regional Park District, which respectively are designated Resource Conservation and Parks and Recreation on the Land Use Map. The remaining properties are used primarily for grazing cattle and are designated Agricultural Lands. (3-132)

2. Require new developments to be consistent with the community’s rural character in terms of massing and scale.

3. Prioritize roadway infrastructure maintenance and improvement, especially repair of collapsed roadways.

4. Support and promote the expansion of transportation services, affordable housing, and health resources for the growing senior population.

5. Support and encourage increased internet access and telecommunication services.

6. Maintain Fire Station 19 and fire services to protect the community from wildfire hazards. DRAFT