Document ID: EPA-HQ-OW-2004-0002-0494
Agency: epa
Document Type: Supporting & Related Material
Title: 
Posted Date: 2004-11-30T05:00Z

OCS
Platform
CWIS
Information
Page
1
12/
1/
2004
10:
11
AM
Company:
ChevronTexaco
Prospect
or
Field
Name:
South
Timbalier
37
OCS
Lease
and
Block:
OCS­
G
2625,
ST37
Platform
Name:
ST37'
J'

CWIS
Information
Requirements
Platform
Information
Number
of
CWISs
1
Brief
description
of
each
CWIS
(
e.
g.,
sea
chest,
simple
pipe)
Simple
Pipe
Rough
dimensions
of
each
CWIS
and
indicate
whether
CWIS
has
existing
flange
18"
O.
D.
 
no
flange
Screen
type
(
e.
g.,
strainer,
wedge
wire)
with
mesh
size
No
intake
screen
at
pipe
inlet,
½
"
mesh
screen
at
pump
suction
at
20ft
below
sea
level
Total
daily
maximum
design
water
intake
volume
of
each
CWIS
1,728,000
gpd
Total
daily
water
intake
volume
of
each
CWIS
(
set­
up/
drilling)
<
1,728,000
gpd
Total
daily
cooling
water
intake
volume
of
each
CWIS
(
set­
up/
drilling)
<
1,728,000
gpd
Design
through
screen
velocity
of
each
CWIS
(
i.
e.,
Q
=
V
*
A)
(
set­
up/
drilling)
1.7
fps
List
purposes
of
cooling
water
intake
(
e.
g.,
cool
crude
oil,
produced
water,
power
generators,
drill
pipe
brakes).
Engine
cooling
water.

List
purposes
of
cooling
water
intake
(
e.
g.,
cool
crude
oil,
produced
water,
power
generators,
drill
pipe
brakes).
Engine
cooling
water.

List
purposes
of
non­
cooling
water
intakes
(
e.
g.,
fire
water,
hotel
loads)
other
than
ballast
water.
Fire
water
Total
volume
of
water
intake
for
ballasting,
duration
of
ballast
intake,
and
through
screen
velocity
of
ballast
intake.
None
Mitigation
measures
for
reducing
impingement
and
entrainment
of
aquatic
organisms,
and
biofouling
prevention
measures.
None
Mitigation
measures
for
reducing
exotic
species
migration
through
ballast
water.
None
CWIS
=
Cooling
Water
Intake
Structure
OCS
Platform
CWIS
Information
Page
2
12/
1/
2004
10:
11
AM
Company:
ChevronTexaco
Prospect
or
Field
Name:
Green
Canyon
205
OCS
Lease
and
Block:
OCS­
G
5911,
GC205
Platform
Name:
Genesis
CWIS
Information
Requirements
Platform
Information
Number
of
CWISs
2
Brief
description
of
each
CWIS
(
e.
g.,
sea
chest,
simple
pipe)
Simple
pipe
down
300ft
below
sea
level.

Rough
dimensions
of
each
CWIS
and
indicate
whether
CWIS
has
existing
flange
18"
O.
D.
each,
no
flange
Screen
type
(
e.
g.,
strainer,
wedge
wire)
with
mesh
size
No
screen,
vertical
slots
(
est.
1"
x
6")

Total
daily
maximum
design
water
intake
volume
of
each
CWIS
5,900,000
gpd
(
each
pump)

Total
daily
water
intake
volume
of
each
CWIS
(
set­
up/
drilling)
<
5,900,000
gpd
Total
daily
cooling
water
intake
volume
of
each
CWIS
(
set­
up/
drilling)
<
5,900,000
gpd
Design
through
screen
velocity
of
each
CWIS
(
i.
e.,
Q
=
V
*
A)
(
set­
up/
drilling)
2.61
fps
List
purposes
of
cooling
water
intake
(
e.
g.,
cool
crude
oil,
produced
water,
power
generators,
drill
pipe
brakes).
Power
generators,
engine
cooling,
etc.

List
purposes
of
cooling
water
intake
(
e.
g.,
cool
crude
oil,
produced
water,
power
generators,
drill
pipe
brakes).
Power
generators,
engine
cooling,
etc.

List
purposes
of
non­
cooling
water
intakes
(
e.
g.,
fire
water,
hotel
loads)
other
than
ballast
water.
Fire
water
Total
volume
of
water
intake
for
ballasting,
duration
of
ballast
intake,
and
through
screen
velocity
of
ballast
intake.
Unable
to
determine
Mitigation
measures
for
reducing
impingement
and
entrainment
of
aquatic
organisms,
and
biofouling
prevention
measures.
None
Mitigation
measures
for
reducing
exotic
species
migration
through
ballast
water.
None
CWIS
=
Cooling
Water
Intake
Structure
OCS
Platform
CWIS
Information
Page
3
12/
1/
2004
10:
11
AM
Company:
CT
Prospect
or
Field
Name:
Viosca
Knoll
786
OCS
Lease
and
Block:
OCS­
G
12119,
VK786
Platform
Name:
Petronius
CWIS
Information
Requirements
Platform
Information
Number
of
CWISs
3
Brief
description
of
each
CWIS
(
e.
g.,
sea
chest,
simple
pipe)
Simple
pipe
down
to
270ft
below
sea
level
Rough
dimensions
of
each
CWIS
and
indicate
whether
CWIS
has
existing
flange
10"
inside
a
24"
casing,
no
flange
Screen
type
(
e.
g.,
strainer,
wedge
wire)
with
mesh
size
No
screen,
slots
1"
x
6",
no
grill
at
the
bottom.
Total
daily
maximum
design
water
intake
volume
of
each
CWIS
160,000
bwpd/
each
pump
(
x3
pumps)

Total
daily
water
intake
volume
of
each
CWIS
(
set­
up/
drilling)
Normally
two
(
2)
pumps
at
320,000
bwpd
Total
daily
cooling
water
intake
volume
of
each
CWIS
(
set­
up/
drilling)
2,940,000
gpd
with
the
rest
for
water
injection
Design
through
screen
velocity
of
each
CWIS
(
i.
e.,
Q
=
V
*
A)
(
set­
up/
drilling)
3.5
fps
List
purposes
of
cooling
water
intake
(
e.
g.,
cool
crude
oil,
produced
water,
power
generators,
drill
pipe
brakes).
Gas
cooling
after
compression,
water
injection
for
secondary
recovery,
vacuum
dehydration
potable
water
List
purposes
of
cooling
water
intake
(
e.
g.,
cool
crude
oil,
produced
water,
power
generators,
drill
pipe
brakes).
Gas
cooling
after
compression,
water
injection
for
secondary
recovery,
vacuum
dehydration
potable
water
List
purposes
of
non­
cooling
water
intakes
(
e.
g.,
fire
water,
hotel
loads)
other
than
ballast
water.
Firewater
Total
volume
of
water
intake
for
ballasting,
duration
of
ballast
intake,
and
through
screen
velocity
of
ballast
intake.
None
Mitigation
measures
for
reducing
impingement
and
entrainment
of
aquatic
organisms,
and
biofouling
prevention
measures.
None
Mitigation
measures
for
reducing
exotic
species
migration
through
ballast
water.
None
CWIS
=
Cooling
Water
Intake
Structure