Abstract Silver Lake Reservoir is a 97-acre site embedded in the urban fabric of Los Angeles. It will be taken off-line as a potable water supply in 2008 due to pollution damaging the quality of the water. The new reservoir will be buried in Griffith Park to the North, while Los Angeles will leave the Silver Lake Reservoir completely full for only aesthetic purposes. While this reservoir sits full with 800 million gallons of water from the hundreds of miles of aqueducts that feed the desert, the nearby LA River discharges a million gallons of water a day, with about forty thousand passing by the tangent point to the reservoir. Through historical research, our project team found that the LA River used to feed the reservoir. The pipes still exist, offering opportunity to restore this link. The EPA’s 303d list states that the Los Angeles River contains 43 pollutants. Los Angeles pulls water from Colorado River, while taking its own water, polluting it and discharging it into the ocean. This project turns the reservoir site into a water refinery, and a pollution ecology research center with a political water institute. Infrastructure used to be called public works; placing this waterworks in the fabric of Los Angeles gives it a civic presence. This public space can be used to shape the practices of water use, illustrate the ramifications of technology on our water resources, and shape water use values among California citizens. In 2004, the U.S. National Research Council released a document citing an alarming lack of planning for the nation’s water sources. Dealing with water is an opportunity for architects and landscape architects to become leaders: shaping values and practices in public works. In this way, public space can be relevant to shared socio-political issues. The Silver Lake Reservoir project is a demonstration of this goal. How can we justify keeping Silverlake reservoir full of clean, potable water from the aqueducts, while polluting the Los Angeles River? Why send out 100 million gallons a day of tainted water to the ocean, while pulling in water from hundreds of miles away? Is it possible to use landscape design to create an awareness of the ramifications of technology on our natural resources? Can landscape design in public space provide opportunities to display not sustainable, but regenerative civic practices?
silver lake water refinery los angeles, ca 90039
aerial view of silver lake reservoir Silver Lake shown in within its Los Angeles context. Note the proximity of the Los Angeles River to the reservoir. The river originally supplied the reservoir. This plan reestablishes this connection.
Griffith Park
Taylor Yards
Silver Lake Reservoir
Elysian Park Echo Park Cornfields parks networks A series of parks; existing, proposed and speculative,
located around the Los Angeles River could be a functioning recreation and water regeneration system.
reservoir area comparison If made into a public park, the reservoir would
be the third largest park in Los Angeles at 97 acres. In a city that is parks deficient, a park embedded in the city fabric and readily accessible could create civic participation and identity.
(
(ARMFUL %FFECTS 3HORT TERM 3ELENIUM IS AN ESSENTIAL NUTRIENT AT LOW LEVELS (OWEVER THE %0! HAS FOUND SELENIUM TO CAUSE THE FOLLOWING HEALTH EFFECTS WHEN EXPOSURE OCCURS AT LEVELS ABOVE THE -#, FOR RELATIVELY SHORT PERIODS OF TIME HAIR AND lNGERNAIL CHANGES DAMAGE TO THE PERIPHERAL NERVOUS SYSTEM FATIGUE AND IRRITABILITY
,I "E
.A -G
0ROPERTIES #RYSTALLINE MONOCLINIC SELENIUM IS DEEP RED CRYSTALLINE HEXAGONAL SELENIUM THE MOST STABLE VARIETY IS A METALLIC GREY %LEMENTAL SELENIUM IS RELATIVELY NONTOXIC AND IS AN ESSENTIAL TRACE ELEMENT (OWEVER HYDROGEN SELENIDE ( 3E AND OTHER SELENIUM COMPOUNDS ARE EXTREMELY TOXIC AND REACTIONS RESEMBLE ARSENIC IN THEIR PHYSIOLOGICAL (YDROGEN SELENIDE IN A CONCENTRATION OF PPM IS INTOLERABLE TO MAN 3ELENIUM IN SOME SOILS PRODUCES SERIOUS EFFECTS ON ANIMALS FEEDING ON PLANTS SUCH AS LOCOWEED AN !MERICAN PLANT GROWN IN THESE SOILS
"
,ONG TERM 3ELENIUM HAS THE POTENTIAL TO CAUSE THE FOLLOWING EFFECTS FROM A LIFETIME EXPOSURE AT LEVELS ABOVE THE -#, HAIR AND lNGERNAIL LOSS DAMAGE TO KIDNEY AND LIVER TISSUE AND NERVOUS AND CIRCULATORY SYSTEMS 4HE TOXICITY OF SELENIUM DEPENDS ON WHETHER IT IS IN THE BIOLOGICALLY ACTIVE OXIDIZED FORM WHICH OCCURS IN ALKALINE SOILS 4HESE CONDITIONS CAN CAUSE PLANT UPTAKE OF THE METAL TO BE INCREASED )T IS KNOWN THAT SELENIUM ACCUMULATES IN LIVING TISSUES
+ #A 3C 4I
0 .
#
!L 3I
(E
.
/
& .E
0
3 #L !R
6 #R -N &E #O .I #U :N 'A 'E !S 3E "R +R
!CCEPTABLE ,EVELS $RINKING 7ATER 3TANDARDS -#,' PPM -#, PPM
/RIGINS
IS A METAL FOUND IN NATURAL AS 3ELENIUM DEPOSITS
3E
ORES CONTAINING OTHER ELEMENTS
2B 3R 9 :R .B -O 4C 2U 2H 0D !G #D )N 3N 3B 4E )F CONTAMINANT LEVELS ARE CONSISTENTLY ABOVE THE -#, YOUR WATER SUPPLIER MUST TAKE STEPS TO REDUCE THE AMOUNT OF SELENIUM SO THAT IT IS CONSISTENTLY BELOW THAT LEVEL
5SES 4HE GREATEST USE OF SELENIUM COMPOUNDS IS IN ELECTRONIC AND PHOTOCOPIER COMPONENTS BUT ARE ALSO WIDELY USED IN GLASS PIGMENTS RUBBER METAL ALLOYS TEXTILES PETROLEUM MEDICAL THERAPEUTIC AGENTS AND PHOTOGRAPHIC EMULSIONS
)
8E
#S "A ,A (F 4A 7 2E /S )R 0T !U (G 4L 0B "I 0O !T 2N &R 2A !C 2F $B 3G "H (S -T $S 7ATER TREATMENT 4HE FOLLOWING TREATMENT METHODS HAVE BEEN APPROVED BY %0! FOR REMOVING SELENIUM !CTIVATED !LUMINA #OAGULATION &ILTRATION ,IME 3OFTENING 2EVERSE /SMOSIS "IO METHODS INCLUDE PHYTOVOLITIZATION AND PHYTOEXTRACTION )NDIAN MUSTARD CANOLA TALL FESCUE LIKE MERCURY CAN KENAF 3ELENIUM FORM METHYL COMPOUNDS IN PHYTOVOLITIZATION PROCESSES
(ALF ,IFE ,IFE #YCLE )SOTOPE
3E 3E 3E 3E 3E 3E 3E 3E
(ALF ,IFE HOURS 3TABLE DAYS 3TABLE 3TABLE 3TABLE YEARS 3TABLE
%NTRY INTO THE .ATURAL 3YSTEM 3ELENIUM OCCURS NATURALLY IN THE ENVIRONMENT AND CAN BE RELEASED BY BOTH NATURAL AND MANUFACTURING PROCESSES 3ELENIUM DUST ENTERS AIR FROM BURNING COAL AND OIL 4HIS DUST SETTLES ON LAND AND IN WATER )T ALSO ENTERS WATER FROM EROSION OF ROCKS AND SOIL AND FROM AGRICULTURAL AND COMPOUNDS INDUSTRIAL WASTE 3OME SELENIUM WILL DISSOLVE IN WATER AND SOME WILL SETTLE TO THE BOTTOM AS PARTICLES )NSOLUBLE FORMS OF SELENIUM WILL REMAIN IN SOIL BUT SOLUBLE FORMS ARE VERY MOBILE AND MAY ENTER SURFACE FROM SOILS 3ELENIUM WATER MAY ACCUMULATE UP THE FOOD CHAIN
#E 0R .D 0M 3M %U 'D 4B $Y (O %R 4M 9B ,U
4H 0A 5 .P 0U !M #M "K #F %S &M -D .O ,R 3OURCES
HTTP WWW EPA GOV HTTP WWW ATSDR GOV
HTTP WWW CHEMICALELEMENTS COM
3ELENIUM WAS DETECTABLE IN THE ,! 2IVER DURING TESTS AND FREQUENTLY ABOVE %0! ALLOWABLE LIMITS
pollutant ecologies Pollutants from the EPA 303d list for the Los Angeles
River has a life cycle and pollutant ecology diagram. Selenium is shown here. The rooms in the canal convey this information to the public.
pollutant ecologies Each pollutant from the EPA 303d list for the Los
Angeles River has a life cycle and pollutant ecology diagram. A compound, tce is shown here.
pollution ecology narratives The project team researched each pollutant and in
addition to clarifying cyles, the team described the pollutant’s relevance through narrative related to local communities. (image by gordon haines).
water out for city use sedimentation ponds step 1 phytoremediation canals polishing ponds
step 2
underground water storage (presently polluted uncapped)
step 4
step 3
water in from los angeles river
(approx. .75 mi., 60 million gallons a day)
(presently from Colorado River and California Aqueduct) Instead of using the Colorado River and California Aqueduct for supply, this scheme uses the Los Angeles River to keep the reservoir filled. A ring canal cleans the pollutants in the river water. After cleaning, the water storage is under a new cap, leaving the water above for recreation and aesthetics. The canal areas can be rented or purchased by local agencies, in need of areas to study phytoremediative and other treatment technologies.
water movement plan view, proposed versus existing
not to scale
raising the water level The project aesthetically improves the community
through the elevation of the water level. A new dam inserted into the existing reservoir creates this effect while providing insurance against failure of the dam on the south end of the reservoir from an earthquake.
proposed water level new cap existing water level new dam reservoir excavation fill on east side
cleaned water for recreation cleaned water for city use new dam superfund site fill on west side
existing reservoir edge
reservoir cross section
water level and new insertion diagram
no scale
existing reservoir
proposed reservoir
water level
water level
from neutra vdl research house II
from neutra vdl research house II
bridge
bridge
entry
(
,I "E
4HE %0! REQUIRES SPILLS OR ACCIDENTAL RELEASES INTO THE ENVIRONMENT OF POUND OR MORE OF TOXAPHENE TO BE REPORTED
/RIGINS #HEMICAL MANUFACTURING
4HE /CCUPATIONAL 3AFETY AND (EALTH !DMINISTRATION /3(! HAS SET A PERMISSIBLE EXPOSURE LIMIT OF MILLIGRAMS TOXAPHENE PER CUBIC METER OF AIR MG MÎ FOR AN HOUR WORKDAY HOUR WORKWEEK
0ROPERTIES )T IS USUALLY FOUND AS A SOLID OR GAS AND IN ITS ORIGINAL FORM IT IS A YELLOW TO AMBER WAXY SOLID THAT SMELLS LIKE TURPENTINE
4HE .ATIONAL )NSTITUTE FOR /CCUPATIONAL 3AFETY AND (EALTH .)/3( RECOMMENDS THAT TOXAPHENE LEVELS SHOULD BE AS LOW AS POSSIBLE IN THE WORKPLACE DUE TO ITS POTENTIAL CARCINOGENICITY
)T DOES NOT BURN AND EVAPORATES WHEN IN SOLID FORM OR WHEN MIXED WITH LIQUIDS 4OXAPHENE IS ALSO KNOWN AS CAMPHECHLOR CHLOROCAMPHENE POLYCHLOROCAMPHENE AND CHLORINATED CAMPHENE
4HE !MERICAN #ONFERENCE OF 'OVERNMENTAL )NDUSTRIAL (YDIENISTS !#')( RECOMMEND MG MÎ FOR AN HOUR WORKDAY HOUR WORKWEEK 4HEY ALSO RECOMMEND THAT MG MÎ BE CONSIDERED A LEVEL THAT SHOULD NOT BE EXCEEDED IN A MINUTE PERIOD
(ALF ,IFE ,IFE #YCLE 4OXAPHENE BREAKS DOWN VERY SLOWLY IN THE ENVIRONMENT 4OXAPHENE ACCUMULATES IN lSH AND MAMMALS
(ARMFUL %FFECTS "REATHING EATING OR DRINKING HIGH LEVELS OF TOXAPHENE COULD DAMAGE THE LUNGS NERVOUS SYSTEM AND KIDNEYS AND CAN EVEN CAUSE DEATH 4OXAPHENE IS NO LONGER USED IN THE 5NITED 3TATES SO MOST PEOPLE WILL NOT BE EXPOSED TO HIGH LEVELS OF IT ,OW EXPOSURES ARE STILL POSSIBLE THERE IS NO INFORMATION ON HOW LOW LEVELS AFFECT PEOPLE 3TUDIES SHOW THAT ANIMALS WHICH ATE FOOD OR DRANK WATER CONTAINING TOXAPHENE HAD NEGATIVE EFFECTS ON THE LIVER KIDNEYS ADRENAL GLANDS AND IMMUNE SYSTEM )T IS NOT KNOWN WHETHER TOXAPHENE CAN AFFECT REPRODUCTION OR CAUSE BIRTH DEFECTS IN PEOPLE !NIMAL STUDIES HAVE REPORTED THAT TOXAPHENE AFFECTS THE DEVELOPMENT OF NEWBORN ANIMALS WHEN THEIR MOTHERS ARE EXPOSED DURING PREGNANCY
(ARMFUL %FFECTS 3HORT TERM 3ELENIUM IS AN ESSENTIAL NUTRIENT AT LOW LEVELS (OWEVER THE %0! HAS FOUND SELENIUM TO CAUSE THE FOLLOWING HEALTH EFFECTS WHEN EXPOSURE OCCURS AT LEVELS ABOVE THE -#, FOR RELATIVELY SHORT PERIODS OF TIME HAIR AND lNGERNAIL CHANGES DAMAGE TO THE PERIPHERAL NERVOUS SYSTEM FATIGUE AND IRRITABILITY
"
4HE TOXICITY OF SELENIUM DEPENDS ON WHETHER IT IS IN THE BIOLOGICALLY ACTIVE OXIDIZED FORM WHICH OCCURS IN ALKALINE SOILS 4HESE CONDITIONS CAN CAUSE PLANT UPTAKE OF THE METAL TO BE INCREASED )T IS KNOWN THAT SELENIUM ACCUMULATES IN LIVING TISSUES
+ #A 3C 4I
0ROPERTIES #RYSTALLINE MONOCLINIC SELENIUM IS DEEP RED CRYSTALLINE HEXAGONAL SELENIUM THE MOST STABLE VARIETY IS A METALLIC GREY %LEMENTAL SELENIUM IS RELATIVELY NONTOXIC AND IS AN ESSENTIAL TRACE ELEMENT (OWEVER HYDROGEN SELENIDE ( 3E AND OTHER SELENIUM COMPOUNDS ARE EXTREMELY TOXIC AND REACTIONS RESEMBLE ARSENIC IN THEIR PHYSIOLOGICAL (YDROGEN SELENIDE IN A CONCENTRATION OF PPM IS INTOLERABLE TO MAN 3ELENIUM IN SOME SOILS PRODUCES SERIOUS EFFECTS ON ANIMALS FEEDING ON PLANTS SUCH AS LOCOWEED AN !MERICAN PLANT GROWN IN THESE SOILS
,ONG TERM 3ELENIUM HAS THE POTENTIAL TO CAUSE THE FOLLOWING EFFECTS FROM A LIFETIME EXPOSURE AT LEVELS ABOVE THE -#, HAIR AND lNGERNAIL LOSS DAMAGE TO KIDNEY AND LIVER TISSUE AND NERVOUS AND CIRCULATORY SYSTEMS
0 .
#
!L 3I
(E
.
0
/
& .E
3 #L !R
6 #R -N &E #O .I #U :N 'A 'E !S 3E "R +R
!CCEPTABLE ,EVELS $RINKING 7ATER 3TANDARDS -#,' PPM -#, PPM
/RIGINS
IS A METAL FOUND IN NATURAL AS 3ELENIUM DEPOSITS
3E
ORES CONTAINING OTHER ELEMENTS
2B 3R 9 :R .B -O 4C 2U 2H 0D !G #D )N 3N 3B 4E )F CONTAMINANT LEVELS ARE CONSISTENTLY ABOVE THE -#, YOUR WATER SUPPLIER MUST TAKE STEPS TO REDUCE
THE AMOUNT OF SELENIUM SO THAT IT IS CONSISTENTLY BELOW THAT LEVEL
5SES 4HE GREATEST USE OF SELENIUM COMPOUNDS IS IN ELECTRONIC AND PHOTOCOPIER COMPONENTS BUT ARE ALSO WIDELY USED IN GLASS PIGMENTS RUBBER METAL ALLOYS TEXTILES PETROLEUM MEDICAL THERAPEUTIC AGENTS AND PHOTOGRAPHIC EMULSIONS
)
8E
#S "A ,A (F 4A 7 2E /S )R 0T !U (G 4L 0B "I 0O !T 2N &R 2A !C 2F $B 3G "H (S -T $S 7ATER TREATMENT 4HE FOLLOWING TREATMENT METHODS HAVE BEEN APPROVED BY %0! FOR REMOVING SELENIUM !CTIVATED !LUMINA #OAGULATION &ILTRATION ,IME 3OFTENING 2EVERSE /SMOSIS "IO METHODS INCLUDE PHYTOVOLITIZATION AND PHYTOEXTRACTION )NDIAN MUSTARD CANOLA TALL FESCUE LIKE MERCURY CAN KENAF 3ELENIUM FORM METHYL COMPOUNDS IN PHYTOVOLITIZATION PROCESSES
(ALF ,IFE ,IFE #YCLE )SOTOPE 3E
3E 3E
(ALF ,IFE HOURS
3TABLE DAYS
%NTRY INTO THE .ATURAL 3YSTEM 3ELENIUM OCCURS NATURALLY IN THE ENVIRONMENT AND CAN BE RELEASED BY BOTH NATURAL AND MANUFACTURING PROCESSES 3ELENIUM DUST ENTERS AIR FROM BURNING COAL AND OIL 4HIS DUST SETTLES ON LAND AND IN WATER )T ALSO ENTERS WATER FROM EROSION OF ROCKS AND SOIL AND FROM AGRICULTURAL AND COMPOUNDS INDUSTRIAL WASTE 3OME SELENIUM WILL DISSOLVE IN WATER AND SOME WILL SETTLE TO THE BOTTOM AS PARTICLES )NSOLUBLE FORMS OF SELENIUM WILL REMAIN IN SOIL BUT SOLUBLE FORMS ARE VERY MOBILE AND MAY ENTER SURFACE FROM SOILS 3ELENIUM WATER MAY ACCUMULATE UP THE FOOD CHAIN
#E 0R .D 0M 3M %U 'D 4B $Y (O %R 4M 9B ,U
4REATMENT 3OIL VENTING SOIL WASHING HYBRID POPLAR GROUND COVER GRASSES WETLAND PLANTS FELT LEAF WILLOW KOA ALFALFA CORN
3E 3E 3E 3E 3E
3TABLE 3TABLE 3TABLE YEARS 3TABLE
4H 0A 5 .P 0U !M #M "K #F %S &M -D .O ,R 3OURCES
3OURCES
HTTP WWW EPA GOV HTTP WWW ATSDR CDC GOV
HTTP WWW EPA GOV HTTP WWW ATSDR GOV
HTTP WWW CHEMICALELEMENTS COM
3ELENIUM WAS DETECTABLE IN THE ,! 2IVER DURING TESTS AND FREQUENTLY ABOVE %0! ALLOWABLE LIMITS
s
t
o r
a g e
n e
w
d a
m
portable tank
testing ground
clean water storage
window view
walkway
4OXAPHENE LEVELS WERE WITHIN ACCEPTABLE RANGES IN THE ,! 2IVER DURING TESTS
plant gurney
information rooms
!CCEPTABLE ,EVELS 4HE %0! HAS SET A DRINKING WATER STANDARD OF MILLIGRAMS OF TOXAPHENE PER LITER OF DRINKING WATER MG ,
#!3 REGISTRY
clean water recreation
%NTRY INTO THE .ATURAL 3YSTEM 4OXAPHENE ENTERS THE ENVIRONMENT FROM HAZARDOUS WASTE SITES )T MAY ENTER THE AIR BY EVAPORATION )T DOES NOT DISSOLVE WELL IN WATER SO IT IS MORE LIKELY TO BE FOUND IN AIR SOIL OR SEDIMENT AT THE BOTTOM OF LAKES OR STREAMS THAN IN SURFACE WATER
!NATOMY 4OXAPHENE IS AN INSECTICIDE CONTAINING OVER CHEMICALS
.A -G
5SES 4OXAPHENE WAS ONE OF THE MOST HEAVILY USED INSECTICIDES IN THE 5NITED 3TATES UNTIL WHEN IT WAS CANCELED FOR MOST USES ALL USES WERE BANNED IN )T WAS USED PRIMARILY IN THE SOUTHERN 5NITED 3TATES TO CONTROL INSECT PESTS ON COTTON AND OTHER CROPS )T WAS ALSO USED TO CONTROL INSECT PESTS ON LIVESTOCK AND TO KILL UNWANTED lSH IN LAKES
P h y t o r e m e d i a t i o n
canal cross section A ring walkway on the dam accesses levels containing research,
meeting and demonstration rooms with interpretive materials illustrating pollution ecologies and abatement techniques. The bridge and canal isolate people from toxic materials being remediated, while rooms give information on the materials and processes involved.
Large areas are hard to get in site design. Linear pods (6’ x marginalized, with little spaces remaining. Researchers need example, round test pods can test exposure, while linear forms 20’)can be purchased for research in canal tiers. These spaces to discover the role species types, light, topography and (shown in last image in row) can test for depth of water as it pods reflect what designers find on sites: the landscape elevation play in remediative processes. Test pods can have relates to phytoremediative capacity for pollution abatement. several configurations of landform for experimental purposes. For
landform test pods for canals
model views
not to scale
poplar row
eight
feet
ramp
plant gurney P h y t o r e m e d i a t i o n
landform and plant height testing
drop in plant test tank
spectroscopy mounds n e w
t es
tin gg
ro un d
pl ant Pa le t tes inside the canal On the left, scaffolds are research areas for architectural
facades. On the right are the landform test pods. The base channel of the canal is ‘polishing’ the water after remediation in the test pods.
d a m
walkway
ers roduc p t n a pollut bridge
eig ht fe et
forty eight feet
P h y t o r e m e d i a t i o n
pollutant pods
plant gurney
tin gg t es
landform and plant height testing
rou
nd
spectroscopy mounds
n e
w
d a
m
inside canal The movement system to the canal displays the cycle of pollutants.
The bridge floor encases the prime suspects in water pollution in a gabion floor. One gabion may contain brake shoes, which can release zinc into water systems.
The test pods below the bridge can show the plants that remediate the zinc. The interpretive rooms can further explicate this process of zinc remediation; the pollution ecology is legible through this system.
maintenance barge information entry
plant gurneys
poplar row
pla nt
gu
rn ey
t es
tin gg
rou
nd
barge view The working refinery. A barge removes test gurneys on the
outside face. The inside canals are wider than a bobcat to facilitate the creation of different earth forms for study.
bird’s eye view of north end of reservoir
view along walk to exotics garden with paving showing yearly rainfall amounts
ivanhoe reservoir
ivanhoe reservoir alk
rain
ew g u ga
dam ll wa
exotics gurney
exotics guerney
water flows down through gabion filled with trash into water refinery outside
view inside of dam to phytoremediation garden/water refinery
cypress tree row
mel chin - revival field The first
phytoremediation landscape project is an art experiment. A collaboration between artists and scientists studies plants and rates of pollutant removal in this installation. ( photos and images by Walker Art Center and artist copyright).
dam wall
north end of reservoir A platform
connected to the dam inside of the Silver Lake Reservoir is an area to study and observe pollution ecologies and their remediative emergent or submergent organic ecosystems.
water refinery emergent
water refinery submergent
rhizofiltration
reservoir water level outside stainless steel ‘gurney’ the gurney Walking on top of
the dam next to a Cypress row, a verdant garden planted with the exotic plants of typical Los Angeles landscape appears in the distance. Upon entering the garden, a descent through to the plane below (pictured right) reveals the landscape to be delicately perched upon a stainless steel plate, supported by leaking pipes into a cracked floor. This experience alludes to Los Angeles’ arid environment. The landscapes of the city are a thin veneer of vegetation stitched to the ground with irrigation systems.
drainage/supply pipes/columns kathryn miller and michael honer - desert lawn The artists take water from the
aqueduct, racing towards desert sites, and polluting industries with a lawn on a gurney, kept alive by an intravenous water supply. (images kathryn miller).
project team research Claire Goode Tavi Perttula Tori Kjer Jaime Yamashita Angie Megert design Ken McCown
with
Kevin Hinders Andy Wilcox additional studies by
Ceanatha La Grange Leslie Lum