Document ID: EPA-HQ-OW-2002-0033-0330
Agency: epa
Document Type: Supporting & Related Material
Title: 
Posted Date: 2003-04-14T04:00Z

Poisson
Based
Rec.
Benefits
3/
4/
2003
Based
on
Closures
from
Final
(
No
GMs)
MEAN
VALUES
POISSON
Ohio
State
Recreational
Benefits
Activity
Ohio
State
Population
in
2000
Aged
16
and
Older
Percentage
Participating
in
the
Activity
Single
Day
Trip
to
Ohio
(
from
the
NRDS)
Affected
Population
Per
Trip
Welfare
in
$
2001
Lower
Bound
Mid
Upper
Bound
Total
Lower
Bound
Benefits
in
$
2001
Total
Mid
Benefits
in
$
2001
Total
Upper
Bound
Benefits
in
$
2001
Fishing
8790969
0.1015
=
B5*
C5
=
D23*
C28
=
B23*
C28
=(
F5+
H5)/
2
=
C23*
C28
=
F5*
D5
=
G5*
D5
=
H5*
D5
Boating
8790969
0.0769
=
B6*
C6
=
D24*
C28
=
B24*
C28
=(
F6+
H6)/
2
=
C24*
C28
=
F6*
D6
=
G6*
D6
=
H6*
D6
Vewing
8790969
0.0908
=
B7*
C7
=
D25*
C28
=
B25*
C28
=(
F7+
H7)/
2
=
C25*
C28
=
F7*
D7
=
G7*
D7
=
H7*
D7
Swimming
8790969
0.0908
=
B8*
C8
=
D26*
C28
=
B26*
C28
=(
F8+
H8)/
2
=
C26*
C28
=
F8*
D8
=
G8*
D8
=
H8*
D8
Total
Recreational
Benefit
=
SUM(
I5:
I9)
=
SUM(
J5:
J9)
=
SUM(
K5:
K9)

Low
(
50%)
Mid
(
50%)
High
(
50%)
Non­
Use
Values
=
I10*
0.5
=
J10*
0.5
=
K10*
0.5
TOTAL
BENEFITS
=
I10+
B13
=
J10+
C13
=
K10+
D13
Poisson
approach.
Uses
only
participants;
the
estimated
poisson
model
determines
the
basline
and
post
compliance
number
of
trips.
The
estimated
number
of
trips
is
then
multiplied
by
the
per
trip
value
estimated.
$
1993
Seasonal
Welfare
Values
Per
Trip
Value
in
$
1993
Activity
Lower
Upper
Fishing
0.14
0.14
0.014
MEAN
VALUES
USED
Boating
0
0
0
Viewing
0.09
0.09
0.01
Swimming
0.01
0.01
0.01
CPI
based
adjustment
factor
for
1993
to
2001
1.225606
Seasonal
Welfare
Range
(
in
$
2001)
Recreational
Benefits
Range
rum_
ben
(
Final
No
GMs
11_
29_
02).
xls