Document ID: EPA-HQ-OW-2004-0002-0488
Agency: epa
Document Type: Supporting & Related Material
Title: 
Posted Date: 2004-11-29T05:00Z

Group
discussion
1:
Identification
of
scientific
gaps.

 
Effects
of
temperature
changes
on
marine
resources
(
i.
e.
fishing
and
non­
fishing
resources,
EFH).

 
Effects
caused
by
the
use
of
anti­
fouling
biocides.

 
Impingement
and
entrainment
of
marine
organisms.

 
Effects
of
offshore
facilities
(
buoys
and
anchors)
on
protected
resources.

 
Effects
of
dredging
on
marine
resources
associated
with
the
construction
of
new
facilities,
upgrading
or
expansion
of
old
facilities,
or
the
establishment
of
new
pipelines.

 
Impacts
on
marine
resources
from
possible
spills.

 
Impacts
associated
with
routine
maintenance
of
facilities
and
vessel
transportation
 
Identification
of
scientific
data
gaps
according
to
type
of
LNG
terminal
(
offshore
vs.
inshore).

 
Additional
unknowns
Impacts
of
LNG
Facilities
in
the
Gulf
of
Mexico
°
Entrainment
Table
1.
Proposed
Liquified
Natural
Gas
processing
facilities
in
the
Gulf
of
Mexico
Name
Location
Expected
Flow
Rate
Million
Gal/
day
Expected
Flow
Rate
Million
Gal/
year
Water
depth
(
m)
Area
filtered
per
year
(
km
2)
Intake
screen
Size
(
mm)
Intake
Flow
Rate
(
ft/
sec)

Vista
del
Sol
LNG
(
ExxonMobil)
La
Quinta
Channel,
Corpus
Christi,

TX
100
36,500
3
46.1
GunderBoom
0.2
Golden
Pass
LNG
(
ExxonMobil)
Western
side
of
Sabine
Pass,
TX
100
36,500
2
69.1
GunderBoom
0.2
El
Paso
Energy
Bridge
116
miles
South
of
Cameron,
LA
28o05'
16''
N,
93o03'
07''
W
133
48,545
87
2.1
21
1
Shell
Gulf
Landing
(
West
Cameron
Block
213)
south
of
Lake
Charles,
LA
136
49,640
16.8
11.2
6.35
0.5
Port
Pelican
36
miles
S­
SW
of
Freshwater
City,
LA
29o01'
33.41''
N,
92o32'
11.85''
W
176
64,240
25
9.7
6.35
0.5
Main
Pass
17
miles
east
of
Pass
a
Loutre,
LA
east
of
the
Miss.
River
delta
100
36,500
64
2.2
6.35
0.5
ConocoPhillips
ICE­
T
11
miles
South
of
Mobile
Bay
Inlet,

AL
200
73,000
22
12.6
6.35
0.5
ExxonMobil
Offshore
ExxonMobil
Mobile
Bay,
AL
Lake
Charles
(
Trunkline)

existing
Lake
Charles
Harbor
and
Terminal,
9
miles
SW
of
Lake
Charles,
LA
Closed
loop
n/
a
n/
a
n/
a
n/
a
n/
a
Oxy­
Chem
La
Quinta
Channel
adjacent
to
Exxon­

Mobil,
Corpus
Christi,
TX
Closed
loop
n/
a
n/
a
n/
a
n/
a
n/
a
Freeport
Quintana,
TX
Closed
loop
n/
a
n/
a
n/
a
n/
a
n/
a
Corpus
Christi
(
Cheniere)
La
Quinta
Channel,
just
west
of
aluminum
plant,
Corpus
Christi,
TX
Closed
loop
n/
a
n/
a
n/
a
n/
a
n/
a
Cameron
(
Hackberry)
LA
Closed
loop
n/
a
n/
a
n/
a
n/
a
n/
a
Sabine
Pass
(
Cheniere)
LA
Closed
loop
n/
a
n/
a
n/
a
n/
a
n/
a
Problems
Estimating
Impacts
of
Entrainment
Mortality
°
Larval
fish
densities
in
entrained
water
(
sampling
error;
seasonality;
net
selectivity;
taxonomy;
vertical
distribution/
migration)

°
Avoidance
of
intake
structure
°
Mortality
of
entrained
organisms
(
mechanical;
temperature;
chemical;

pressure)

°
Population
effects
of
mortality
(
error
in
model
input
and
results)
°
Summer
Groundfish
Survey;
mid
June
to
end
of
July;
Mobil
Bay
to
Brownsville;

plankton
samples
taken
when
time
allows
°
Fall
Dedicated
Plankton
Survey;
late
August
to
Sept
(
Federal
ships);
S.
Florida
to
Brownsville;
1
sample/
station/
year
since
1986
°
Fall
Groundfish
Survey;
October
to
November;
about
40
samples
per
year
°
Periodic
State
Sampling
Estimating
Densities
of
Fish
Larvae
(
fish
eggs
are
more
difficult)

°
Sampling
intensity
and
timing
of
SEAMAP
data
are
inadequate
for
estimating
densities
at
one
location
(
1­
2
samples
per
year/
station
in
summer
and
fall;
winter
spawners
such
as
grouper
&
menhaden
are
not
well
represented)

°
The
short
duration
of
larvae
in
the
water
column
(
e.
g.,
about
20
days
for
snapper)
increases
sampling
error
°
Of
the
fishery
species
in
the
SE,
we
can
only
identify
about
30%
to
species
°
Oblique
tows
integrate
water
column;
more
representative
in
fall
when
water
column
is
mixed
°
0.333­
mm
mesh
net
misses
some
larvae
Data
Source
No/
m
3
No/
1million
gallons
water
Millions
entrained
during
Phase
II
(
176.4
MGD)

A.
Original
SEAMAP
Data
(
June­
November)

Fish
Eggs
(
14
samples)
3.06
11,583
373
Fish
Larvae
(
32
samples)
6.21
23,507
757
Sum
(
Fish
eggs+
larvae)
9.27
35,091
1,130
B.
SEAMAP
estimate
for
(
December­
May)

Fish
Eggs
1.38
5,225
168
Fish
Larvae
2.80
10,603
341
Sum
(
Fish
eggs+
larvae)
4.18
15,828
510
SEAMAP
annual
estimate
(
A+
B)

Fish
Eggs
541
Fish
Larvae
1,098
Sum
(
Fish
eggs+
larvae)
1,639
SEAMAP
annual
estimate
adjusted
for
mesh
selection,
3*(
A+
B)

Fish
Eggs
1,623
Fish
Larvae
3,294
Sum
(
Fish
eggs+
larvae)
4,918
Shrimp
larvae,
annual
estimate
(
Temple
and
Fischer
1967)
0.25
927
60
Zooplankton,
annual
estimate
(
Minello
1980)
2000
7,570,824
487,455
Table
2.
Density
and
entrainment
estimates
for
plankton
near
the
Port
Pelican
LNG
facility
in
coastal
Louisiana
waters.
Location
Taxon
Average
Density
(#/
m3)
Citation
Cedar
Bayou
,
TX
penaeid
shrimp
postlarvae
300
(
March)

16.3
(
Jan­
Apr)
King
(
1971)

Cedar
Bayou
,
TX
blue
crab
megalopae
1000
(
Max
weekly)

58.7
(
Jan­
Apr)
King
(
1971)

Matagorda
Bay
Ship
Channel,
TX
blue
crab
larvae
2.5
(
Apr­
Aug)
Lochman
et
al.
(
1995)

Aransas
Pass,
TX
brown
shrimp
postlarvae
0.75
(
April)
Copeland
and
Truit
(
1966)

Near
Aransas
Pass,

TX
red
drum
eggs
20
(
Max)

2­
3
(
Sept­
Oct)
Holt
et
al.
(
1988)

Bolivar
Roads,
TX
penaeid
shrimp
postlarvae
0.37
(
Nov­
Apr)
Duronslet
et
al.
(
1972)

Keith
Lake
Pass,
TX
gulf
menhaden
larvae
2.75
(
spring)

1.0
(
overall)
Hartman
et
al.
(
1987)

Keith
Lake
Pass,
TX
blue
crab
0.34
(
overall)

1.03
(
fall)
Hartman
et
al.
(
1987)

Keith
Lake
Pass,
TX
white
shrimp
0.20
(
overall)

0.73
(
summer)
Hartman
et
al.
(
1987)

Keith
Lake
Pass,
TX
brown
shrimp
0.08
(
overall)

0.19
(
spring)
Hartman
et
al.
(
1987)

Oyster
Bayou
Pass,

LA
fish
larvae
10­
49
Raynie
and
Shaw
1994
Horn
Island,
MS
fish
larvae
308
(
outer
surf
zone)

86
(
inner
surf
zone)
Ruple
(
1984)

Dog
Keys
Pass,
MS
fish
larvae
1.5
(
January,
May
Lyczkowsk
i­
Shultz
et
al.
(
1990)

Main
Pass,
AL
fish
eggs
100
Marley
(
1983)

Densities
of
Eggs
and
Larvae
in
Estuarine
Passes
Population
effects
of
mortality
°
Fecundity
Approach
°
Age­
1
Equivalency
°
Reference
Parcel
(
e.
g.,
13
km
radius;
2%
of
volume
filtered
per
year)
Impacts
of
LNG
Facilities
in
the
Gulf
of
Mexico
°
Impingement
Table
1.
Proposed
Liquified
Natural
Gas
processing
facilities
in
the
Gulf
of
Mexico
Name
Location
Expected
Flow
Rate
Million
Gal/
day
Expected
Flow
Rate
Million
Gal/
year
Water
depth
(
m)
Area
filtered
per
year
(
km
2)
Intake
screen
Size
(
mm)
Intake
Flow
Rate
(
ft/
sec)

Vista
del
Sol
LNG
(
ExxonMobil)
La
Quinta
Channel,
Corpus
Christi,

TX
100
36,500
3
46.1
GunderBoom
0.2
Golden
Pass
LNG
(
ExxonMobil)
Western
side
of
Sabine
Pass,
TX
100
36,500
2
69.1
GunderBoom
0.2
El
Paso
Energy
Bridge
116
miles
South
of
Cameron,
LA
28o05'
16''
N,
93o03'
07''
W
133
48,545
87
2.1
21
1
Shell
Gulf
Landing
(
West
Cameron
Block
213)
south
of
Lake
Charles,
LA
136
49,640
16.8
11.2
6.35
0.5
Port
Pelican
36
miles
S­
SW
of
Freshwater
City,
LA
29o01'
33.41''
N,
92o32'
11.85''
W
176
64,240
25
9.7
6.35
0.5
Main
Pass
17
miles
east
of
Pass
a
Loutre,
LA
east
of
the
Miss.
River
delta
100
36,500
64
2.2
6.35
0.5
ConocoPhillips
ICE­
T
11
miles
South
of
Mobile
Bay
Inlet,

AL
200
73,000
22
12.6
6.35
0.5
ExxonMobil
Offshore
ExxonMobil
Mobile
Bay,
AL
Lake
Charles
(
Trunkline)

existing
Lake
Charles
Harbor
and
Terminal,
9
miles
SW
of
Lake
Charles,
LA
Closed
loop
n/
a
n/
a
n/
a
n/
a
n/
a
Oxy­
Chem
La
Quinta
Channel
adjacent
to
Exxon­

Mobil,
Corpus
Christi,
TX
Closed
loop
n/
a
n/
a
n/
a
n/
a
n/
a
Freeport
Quintana,
TX
Closed
loop
n/
a
n/
a
n/
a
n/
a
n/
a
Corpus
Christi
(
Cheniere)
La
Quinta
Channel,
just
west
of
aluminum
plant,
Corpus
Christi,
TX
Closed
loop
n/
a
n/
a
n/
a
n/
a
n/
a
Cameron
(
Hackberry)
LA
Closed
loop
n/
a
n/
a
n/
a
n/
a
n/
a
Sabine
Pass
(
Cheniere)
LA
Closed
loop
n/
a
n/
a
n/
a
n/
a
n/
a
Group
discussion
1:
Identification
of
scientific
gaps.

 
Effects
of
temperature
changes
on
marine
resources
(
i.
e.
fishing
and
non­
fishing
resources,
EFH).

 
Effects
caused
by
the
use
of
anti­
fouling
biocides.

 
Impingement
and
entrainment
of
marine
organisms.

 
Effects
of
offshore
facilities
(
buoys
and
anchors)
on
protected
resources.

 
Effects
of
dredging
on
marine
resources
associated
with
the
construction
of
new
facilities,
upgrading
or
expansion
of
old
facilities,
or
the
establishment
of
new
pipelines.

 
Impacts
on
marine
resources
from
possible
spills.

 
Impacts
associated
with
routine
maintenance
of
facilities
and
vessel
transportation
 
Identification
of
scientific
data
gaps
according
to
type
of
LNG
terminal
(
offshore
vs.
inshore).

 
Additional
unknowns
Conversions
264.2
billion
gallons
1
KM3
264.2
gallons
1
M3
0.003785
KM3
1
billion
gallons
3785.4
M3
1
million
gallons
0.003785
M3
1
gallon
TAXON
N
MEAN
STD
SE
MIN
MAX
FREQENCY
%
F0
Carangidae
32
3487.5
6461.5
1142.2
0
31710.0
23
71.9
Engraulidae
32
3311.7
6793.4
1200.9
0
35735.0
26
81.3
Unidentified
Fish
32
3276.8
14726.3
2603.3
0
83642.6
20
62.5
Clupeiformes
32
2371.5
6422.7
1135.4
0
34065.1
15
46.9
Sciaenidae
32
2366.7
3552.1
627.9
0
15224.2
29
90.6
Cynoglossidae
32
1956.9
4083.4
721.8
0
17358.9
29
90.6
Gobiidae
32
1892.6
4585.6
810.6
0
21527.3
26
81.3
Clupeidae
32
1484.7
3162.1
559.0
0
16401.7
24
75.0
Paralichthyidae
32
1103.0
1944.0
343.7
0
8026.8
26
81.3
Scombridae
32
318.2
589.2
104.2
0
2606.1
19
59.4
Bregmacerotidae
32
309.7
725.4
128.2
0
2999.4
13
40.6
Ophidiidae
32
307.3
492.8
87.1
0
2110.9
22
68.8
Bothidae
32
282.5
578.3
102.2
0
2444.5
15
46.9
Serranidae
32
212.3
485.6
85.8
0
2290.9
16
50.0
Stromateidae
32
132.9
187.8
33.2
0
620.5
19
59.4
Pleuronectiformes
32
132.7
678.6
120.0
0
3847.1
5
15.6
Ophichthidae
32
79.2
211.9
37.5
0
1142.6
11
34.4
Lutjanidae
32
62.7
122.2
21.6
0
425.8
10
31.3
Triglidae
32
60.4
176.9
31.3
0
868.7
6
18.8
Microdesmidae
32
54.2
120.5
21.3
0
498.0
10
31.3
Perciformes
32
50.1
180.9
32.0
0
992.8
6
18.8
Blenniidae
32
34.2
64.3
11.4
0
252.3
10
31.3
Sphyraenidae
32
30.4
73.8
13.0
0
270.4
6
18.8
Synodontidae
32
29.9
64.3
11.4
0
283.9
9
28.1
Trichiuridae
32
29.6
53.5
9.5
0
174.7
9
28.1
Pomatomidae
32
23.7
133.8
23.7
0
757.0
1
3.1
Tetraodontidae
32
14.6
40.5
7.2
0
195.8
5
15.6
Muraenidae
32
12.8
39.4
7.0
0
206.5
5
15.6
Labridae
32
11.8
48.9
8.7
0
248.2
2
6.3
Moringuidae
32
8.8
34.8
6.2
0
142.8
2
6.3
Callionymidae
32
8.2
46.1
8.2
0
261.0
1
3.1
Congridae
32
6.6
24.8
4.4
0
130.5
3
9.4
Table
2.
Number
of
samples,
mean,
std,
se,
min,
and
max
abundance
(
larvae/
million
gallons),
number
of
samples
taken
in
(
frequency)
and
percent
frequency
of
occurrence
(%
FO)
of
each
Family
or
Order
captured
in
the
Port
Pelican
bongo
net
samples.
(
Provided
by
David
Hanisko
and
Joanne
L­
S
on
1/
15/
04)
Impacts
of
LNG
Facilities
in
the
Gulf
of
Mexico
°
Entrainment
°
Impingement
°
Environmental
effects
on
surrounding
water