I
nte
rna
t
io
na
l J
o
urna
l o
f
Adv
a
nces in Applie
d Science
s
(
I
J
AAS)
Vo
l.
13
,
No
.
4
,
Dec
em
b
er
2
0
2
4
,
p
p
.
8
5
4
~
8
63
I
SS
N:
2
2
5
2
-
8
8
1
4
,
DOI
:
1
0
.
1
1
5
9
1
/ijaas.v
1
3
.
i
4
.
pp
854
-
8
63
854
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:
h
ttp
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//ij
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Ass
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a
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a
l
h
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e
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M
a
p
a
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p
e
L
a
k
e
in
S
a
n
M
a
rc
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li
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o
,
Zam
b
a
les
,
P
h
il
ip
p
i
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e
s.
Th
is
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e
sc
rip
ti
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rc
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e
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teriz
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ter
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ts
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ix
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li
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ti
o
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i
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lak
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we
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ted
b
a
se
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o
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rre
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t
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o
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t
so
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o
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v
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tal
p
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ll
u
ti
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.
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h
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stu
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d
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a
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th
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v
i
n
g
p
lac
e
fo
r
a
lg
a
e
a
n
d
z
o
o
p
lan
k
to
n
.
T
h
e
h
e
a
v
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m
e
tal
c
o
n
c
e
n
tratio
n
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f
th
e
lak
e
wa
ter
a
n
d
se
d
ime
n
t
sa
m
p
le
is
with
i
n
th
e
sta
n
d
a
rd
li
m
it
.
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e
wa
ter
c
o
n
d
u
c
ti
v
it
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is
c
o
n
sid
e
re
d
t
o
b
e
with
in
t
h
e
sta
n
d
a
rd
s.
I
n
term
s o
f
p
H
lev
e
l,
t
h
e
sa
m
p
li
n
g
sites
o
b
tain
e
d
a
p
H l
e
v
e
l
with
i
n
th
e
a
c
c
e
p
tab
le
li
m
it
.
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e
c
o
n
c
e
n
tr
a
ti
o
n
o
f
h
e
a
v
y
m
e
tals
in
t
h
e
lak
e
wa
ter
a
n
d
se
d
ime
n
ts
is
g
e
n
e
ra
ll
y
with
i
n
th
e
sta
n
d
a
rd
li
m
it
.
Oth
e
r
p
h
y
sic
o
c
h
e
m
ica
l
p
ro
p
e
rti
e
s
a
re
a
lso
in
t
h
e
a
c
c
e
p
tab
le
ra
n
g
e
.
Th
e
c
o
m
m
u
n
it
y
p
e
o
p
le
a
n
d
l
o
c
a
l
g
o
v
e
r
n
m
e
n
t
m
u
st
c
o
l
lab
o
ra
te
to
imp
lem
e
n
t
t
h
e
c
ra
fted
stra
teg
ic
e
n
v
iro
n
m
e
n
tal
su
sta
i
n
a
b
il
it
y
p
lan
,
wh
ich
in
c
l
u
d
e
s
b
io
d
iv
e
rsit
y
c
o
n
se
rv
a
ti
o
n
a
n
d
e
c
o
to
u
rism
p
r
o
m
o
ti
o
n
.
Li
k
e
wise
,
th
e
stu
d
y
p
ro
v
id
e
s
u
p
d
a
ted
a
n
d
c
o
m
p
re
h
e
n
siv
e
d
a
ta
o
n
th
e
sta
tu
s
o
f
th
e
lak
e
'
s
h
e
a
v
y
m
e
tal
c
o
n
c
e
n
tratio
n
fo
r
p
o
li
c
y
fo
rm
u
latio
n
a
n
d
fu
r
th
e
r
re
s
e
a
rc
h
.
K
ey
w
o
r
d
s
:
Ass
es
s
m
en
t o
f
h
ea
v
y
m
etals
Ma
p
an
u
ep
e
L
ak
e
Ph
y
s
ico
ch
em
ical
p
r
o
p
er
ty
W
ater
an
a
ly
s
is
Z
am
b
ales,
P
h
ilip
p
in
es
T
h
is i
s
a
n
o
p
e
n
a
c
c
e
ss
a
rticle
u
n
d
e
r th
e
CC B
Y
-
SA
li
c
e
n
se
.
C
o
r
r
e
s
p
o
nd
ing
A
uth
o
r
:
Dan
ilo
V.
R
o
g
ay
an
J
r
.
C
o
lleg
e
o
f
T
ea
ch
er
E
d
u
ca
tio
n
,
Pre
s
id
en
t Ram
o
n
Ma
g
s
ay
s
ay
State
Un
iv
er
s
ity
Nag
b
u
n
g
a
,
San
Ma
r
ce
lin
o
,
Z
a
m
b
ales,
2
2
0
7
,
Ph
ilip
p
in
es
E
m
ail: d
an
r
o
g
ay
an
@
p
r
m
s
u
.
e
d
u
.
p
h
1.
I
NT
RO
D
UCT
I
O
N
W
ater
,
o
f
ten
ter
m
ed
th
e
ess
en
ce
o
f
life
,
s
u
s
tain
s
ec
o
s
y
s
te
m
s
an
d
s
u
p
p
o
r
ts
h
u
m
a
n
civ
ilizatio
n
.
Fo
r
th
e
Ph
ilip
p
in
es,
a
So
u
th
ea
s
t
Asi
an
I
s
lan
d
co
u
n
tr
y
s
an
d
wi
ch
ed
b
etwe
en
th
e
W
es
t
Ph
ili
p
p
in
e
Sea
an
d
th
e
Pacif
ic
Oce
an
,
wate
r
p
o
llu
tio
n
h
as
em
e
r
g
ed
as
a
p
er
s
is
ten
t
ch
a
llen
g
e.
Acc
o
r
d
in
g
to
th
e
Asi
an
Dev
elo
p
m
en
t
B
an
k
as
cited
in
Kh
alid
[
1
]
,
s
ev
er
al
p
o
llu
tan
ts
h
av
e
m
a
d
e
wate
r
g
r
ad
u
ally
a
h
az
a
r
d
to
li
f
e.
W
ater
s
o
u
r
ce
s
in
th
e
co
u
n
tr
y
s
u
f
f
er
f
r
o
m
a
m
y
r
iad
o
f
p
o
llu
tan
ts
.
I
n
d
u
s
tr
ial
wate
r
waste,
co
n
tain
in
g
h
ea
v
y
m
etals,
ca
n
ex
is
t
o
v
er
lo
n
g
p
er
io
d
s
an
d
is
o
f
ten
ca
lled
s
to
ck
p
o
llu
tan
ts
2
.
Oth
e
r
d
etr
im
en
tal
wastes
,
s
u
ch
as d
ec
o
m
p
o
s
ed
p
la
n
ts
,
d
ea
d
an
im
als,
liv
esto
c
k
d
u
n
g
,
an
d
r
esid
u
e,
a
r
e
o
r
g
an
ic
wastes
th
at
also
co
n
tr
ib
u
te
to
th
e
co
u
n
tr
y
'
s
p
o
llu
tio
n
p
r
o
b
lem
[
2
]
.
T
h
e
E
n
v
ir
o
n
m
en
tal
Ma
n
a
g
e
m
en
t
B
u
r
ea
u
[
3
]
s
tated
th
at
f
r
o
m
2
0
0
1
to
2
0
0
5
,
m
an
y
w
a
ter
-
r
elate
d
ev
en
ts
h
ap
p
en
e
d
,
in
clu
d
in
g
s
p
ill
in
cid
en
ts
f
r
o
m
ch
em
icals
an
d
m
in
e
tailin
g
s
,
an
d
illeg
al
w
aste
d
is
p
o
s
al.
Su
ch
an
th
r
o
p
o
g
en
ic
ac
tiv
ities
r
esu
lted
in
wate
r
co
n
tam
in
atio
n
an
d
th
e
k
illi
n
g
o
f
f
is
h
an
d
o
t
h
er
aq
u
atic
r
eso
u
r
ce
s
.
Evaluation Warning : The document was created with Spire.PDF for Python.
I
n
t J Ad
v
Ap
p
l Sci
I
SS
N:
2252
-
8
8
1
4
A
s
s
es
s
men
t o
f h
ea
vy
meta
ls
co
n
ce
n
tr
a
tio
n
o
f Ma
p
a
n
u
ep
e
L
a
ke
,
Za
mb
a
les,
… (
Ma
.
S
h
iela
G.
Men
d
o
z
a
)
855
R
eg
io
n
I
I
I
was
in
clu
d
ed
i
n
th
e
f
o
u
r
r
e
g
io
n
s
th
at
h
a
d
u
n
s
atis
f
ac
to
r
y
p
er
f
o
r
m
a
n
ce
in
ter
m
s
o
f
wate
r
q
u
ality
.
T
h
e
r
is
k
s
ass
o
ciate
d
with
h
az
ar
d
s
an
d
d
is
aster
s
,
in
clu
d
in
g
p
o
llu
tio
n
a
r
e
f
u
r
th
er
ag
g
r
a
v
ated
b
y
in
d
u
s
tr
ial
p
r
o
g
r
ess
,
d
is
r
u
p
tiv
e
tech
n
o
lo
g
ies
,
an
d
o
th
er
h
u
m
a
n
-
m
ad
e
ac
tiv
ities
[
4
]
.
Hea
v
y
m
etals,
u
b
i
q
u
ito
u
s
in
n
atu
r
e,
p
o
s
e
s
ig
n
if
ican
t
th
r
ea
t
s
d
u
e
to
th
ei
r
ad
v
er
s
e
ef
f
ec
ts
o
n
p
lan
ts
,
an
im
als,
an
d
h
u
m
an
h
ea
lth
.
Du
e
to
an
t
h
r
o
p
o
g
en
ic
ac
tiv
ities
,
th
ese
h
ea
v
y
m
etals
ca
n
af
f
ec
t
p
lan
ts
,
an
im
als,
an
d
ev
en
h
u
m
a
n
b
ein
g
s
as
th
e
s
e
m
ater
ials
ca
n
in
ter
f
er
e
with
th
e
v
ital
o
r
g
a
n
s
’
f
u
n
cti
o
n
in
g
.
Po
llu
tio
n
,
ca
u
s
ed
b
y
h
ea
v
y
m
etals
in
lak
es,
r
i
v
er
s
,
an
d
o
th
er
wate
r
b
o
d
ies,
th
r
ea
ten
s
p
u
b
lic
wate
r
s
u
p
p
l
ies
an
d
af
f
ec
ts
th
e
co
n
s
u
m
er
s
o
f
f
is
h
er
y
an
d
a
q
u
atic
s
o
u
r
ce
s
.
Fu
r
th
e
r
,
s
o
m
e
h
e
av
y
m
etals
ar
e
m
etab
o
lically
r
eq
u
ir
ed
b
y
s
p
ec
ies
in
m
in
u
te
am
o
u
n
ts
b
u
t a
r
e
p
o
is
o
n
o
u
s
at
lar
g
er
co
n
ce
n
tr
atio
n
s
[
5
]
.
T
h
e
p
r
esen
ce
o
f
h
ea
v
y
m
etal
s
in
n
atu
r
e
o
r
ig
in
ates
f
r
o
m
its
m
an
y
ap
p
licatio
n
s
in
m
an
u
f
ac
tu
r
in
g
,
ag
r
o
n
o
m
ic,
m
e
d
ical
,
an
d
d
o
m
esti
c
ar
ea
s
[
6]
b
u
t
is
m
o
s
t
n
o
ti
ce
ab
le
in
p
o
in
t
s
o
u
r
ce
a
r
ea
s
lik
e
m
in
in
g
an
d
o
th
er
m
etal
-
b
ased
m
an
u
f
ac
t
u
r
in
g
p
r
o
ce
s
s
es
[
7
]
.
I
n
r
ec
en
t
y
ea
r
s
,
co
n
ce
r
n
s
h
a
v
e
b
ee
n
r
aised
d
u
e
to
en
v
ir
o
n
m
en
tal
an
d
u
n
i
v
er
s
al
co
m
m
u
n
ity
h
ea
lth
co
n
ce
r
n
s
d
u
e
to
h
ea
v
y
m
e
tal
co
n
tam
in
atio
n
in
th
e
e
n
v
ir
o
n
m
en
t.
T
h
er
e
ar
e
s
ev
er
al
r
ep
o
r
ts
ab
o
u
t
th
e
ef
f
ec
ts
o
f
h
ea
v
y
m
etals
p
o
llu
tin
g
a
g
r
icu
ltu
r
al
lan
d
s
wh
ich
ca
u
s
e
a
r
ed
u
ctio
n
i
n
p
lan
t
g
r
o
wth
,
p
er
f
o
r
m
an
ce
a
n
d
y
ie
ld
[
8
]
a
n
d
in
wate
r
r
eso
u
r
ce
s
th
at
p
o
s
e
a
th
r
ea
t
to
p
u
b
li
c
wate
r
s
u
p
p
ly
an
d
h
az
ar
d
o
u
s
ef
f
ec
ts
o
f
c
o
n
s
u
m
in
g
aq
u
atic
r
eso
u
r
ce
s
[
9
]
.
Ma
p
an
u
ep
e
L
a
k
e
was
f
o
r
m
ed
af
ter
th
e
ca
tast
r
o
p
h
ic
er
u
p
tio
n
o
f
Mt.
Pin
atu
b
o
in
1
9
9
1
.
I
t
is
co
n
s
id
er
e
d
a
f
r
esh
wate
r
lak
e
s
itu
ated
in
th
e
p
r
o
v
in
ce
o
f
Z
am
b
ales,
C
en
tr
al
L
u
zo
n
,
Ph
ilip
p
in
es.
B
ec
au
s
e
o
f
th
e
lak
e'
s
p
an
o
r
am
ic
v
iew,
th
e
g
o
v
er
n
m
en
t
s
tar
ted
to
c
o
n
s
tr
u
ct
a
s
tr
u
ctu
r
e
to
d
ev
elo
p
th
e
lak
e
as
an
ec
o
to
u
r
is
m
s
ite.
D
es
p
i
te
it
s
p
o
t
e
n
t
ia
l
as
a
n
e
c
o
t
o
u
r
i
s
m
d
e
s
t
i
n
a
ti
o
n
,
c
o
n
c
e
r
n
s
p
e
r
s
i
s
t
r
e
g
a
r
d
i
n
g
m
e
r
cu
r
y
c
o
n
t
a
m
i
n
a
t
i
o
n
,
p
u
r
p
o
r
t
e
d
l
y
l
e
a
k
i
n
g
f
r
o
m
n
e
a
r
b
y
m
i
n
e
t
a
i
l
i
n
g
s
[
1
0
]
.
T
h
e
p
o
l
l
u
t
i
o
n
o
f
l
a
k
e
s
c
a
u
s
e
d
b
y
h
e
a
v
y
m
e
t
a
l
s
h
a
s
a
n
e
x
t
r
e
m
e
l
y
h
a
r
m
f
u
l
e
f
f
e
c
t
o
n
p
eo
p
l
e
a
n
d
t
h
e
o
t
h
e
r
o
r
g
a
n
is
m
s
th
a
t
d
e
p
e
n
d
o
n
t
h
e
a
r
e
a
.
Hea
v
y
m
etals
s
p
ec
if
ically
en
ter
aq
u
atic
ec
o
s
y
s
tem
s
th
r
o
u
g
h
r
i
v
er
f
lo
w
o
r
atm
o
s
p
h
er
ic
d
ep
o
s
itio
n
an
d
ca
n
b
e
en
ter
e
d
in
to
th
e
s
ed
im
e
n
ts
in
s
tan
tly
th
r
o
u
g
h
th
e
p
r
o
ce
s
s
es o
f
ab
s
o
r
p
tio
n
an
d
s
ed
im
en
tat
io
n
b
y
s
u
s
p
e
n
d
ed
p
ar
ticles
[
1
1
]
,
[
1
2
]
.
Sev
er
al
s
tu
d
ies
h
av
e
b
ee
n
d
o
n
e
ab
o
u
t
th
e
ef
f
ec
ts
o
f
m
in
in
g
i
n
th
e
p
r
o
v
i
n
ce
o
f
Z
am
b
ales,
p
ar
ticu
lar
ly
in
ag
r
icu
ltu
r
al
lan
d
s
[
1
3
]
,
[
1
4
]
an
d
r
iv
er
in
e
ec
o
s
y
s
tem
s
[
5
]
,
[
1
5
]
,
[
1
6
]
.
L
ik
ewise,
p
r
ev
io
u
s
r
esear
ch
in
th
e
p
r
o
v
in
ce
f
o
cu
s
ed
o
n
ass
ess
in
g
wate
r
q
u
ality
in
ab
an
d
o
n
e
d
m
in
e
s
ites
[
1
7
]
,
s
tr
ea
m
s
ed
im
en
t
g
eo
ch
e
m
ical
m
ap
p
in
g
o
f
a
m
in
in
g
s
ite
[
1
8
]
,
an
d
th
e
id
en
tific
atio
n
o
f
h
ea
v
y
m
etal
ac
cu
m
u
lato
r
s
[
1
9
]
–
[
2
2
]
.
Ho
wev
er
,
s
ca
n
t
atten
tio
n
h
as
b
ee
n
p
aid
t
o
ass
es
s
in
g
h
ea
v
y
m
etal
co
n
ce
n
tr
atio
n
s
in
Ma
p
an
u
e
p
e
L
ak
e
o
v
er
th
e
p
ast
f
if
teen
y
ea
r
s
[
2
3
]
–
[
2
5
]
.
Hen
ce
,
th
e
r
esu
lts
ca
n
p
r
o
v
id
e
in
itial
d
ata
ab
o
u
t
th
e
lak
e'
s
p
r
esen
t
co
n
d
itio
n
with
r
eg
ar
d
to
th
e
p
h
y
s
ico
ch
e
m
ical
ch
ar
ac
te
r
is
tics
o
f
lak
e
wate
r
,
p
ar
ticu
l
ar
ly
th
e
ty
p
es
a
n
d
co
n
ce
n
tr
ati
o
n
s
o
f
h
e
av
y
m
etal
p
o
llu
tio
n
in
th
e
ar
ea
.
T
h
ese
f
in
d
in
g
s
n
o
t
o
n
ly
in
f
o
r
m
lo
ca
l
p
o
licy
m
ak
er
s
f
o
r
ec
o
to
u
r
is
m
d
e
v
elo
p
m
en
t
b
u
t
also
s
af
eg
u
ar
d
th
e
lak
e'
s
ec
o
lo
g
ical
in
teg
r
ity
,
en
s
u
r
in
g
a
s
u
s
t
ain
ab
le
r
eso
u
r
ce
f
o
r
lo
ca
l
c
o
m
m
u
n
ities
.
B
etter
co
n
d
itio
n
o
f
t
h
e
lak
e
m
ea
n
s
m
ax
im
izin
g
th
e
b
en
ef
its
th
at
ca
n
b
e
u
tili
ze
d
b
y
th
e
lo
ca
ls
.
W
h
ile
p
r
ev
io
u
s
s
tu
d
ies
h
av
e
ex
p
l
o
r
ed
en
v
ir
o
n
m
en
tal
is
s
u
es
in
th
e
p
r
o
v
in
ce
,
th
ey
h
av
e
o
f
ten
lack
e
d
co
m
p
r
eh
en
s
i
v
e
an
aly
s
es
o
f
th
e
p
h
y
s
ico
ch
em
ical
p
r
o
p
er
ties
o
f
wate
r
b
o
d
ies.
T
h
e
c
u
r
r
e
n
t
r
es
ea
r
ch
ai
m
s
t
o
c
o
n
d
u
ct
a
th
o
r
o
u
g
h
ex
am
in
atio
n
o
f
th
e
p
h
y
s
ico
ch
em
ical
ch
ar
ac
te
r
is
tics
o
f
th
e
lak
e,
i
n
clu
d
in
g
h
ea
v
y
m
etal
co
n
ce
n
tr
atio
n
s
in
b
o
th
wate
r
an
d
s
ed
im
en
ts
,
alo
n
g
with
o
th
er
r
elev
an
t
p
ar
am
eter
s
.
T
h
is
co
m
p
r
eh
en
s
iv
e
ap
p
r
o
ac
h
will
o
f
f
er
a
m
o
r
e
h
o
lis
tic
u
n
d
er
s
ta
n
d
i
n
g
o
f
th
e
lak
e'
s
en
v
ir
o
n
m
e
n
tal
h
ea
lth
.
Hen
ce
,
th
e
s
tu
d
y
in
te
n
d
ed
to
ass
es
s
th
e
p
r
esen
ce
a
n
d
c
o
n
ce
n
tr
atio
n
o
f
s
o
m
e
s
elec
ted
h
ea
v
y
m
etals.
Sp
ec
if
ically
,
it
s
o
u
g
h
t
an
s
wer
s
to
th
e
f
o
llo
win
g
r
esear
ch
p
r
o
b
lem
s
:
i
)
wh
at
is
th
e
p
r
o
f
ile
o
f
Ma
p
an
u
e
p
e
L
ak
e
in
ter
m
s
o
f
wate
r
s
u
r
f
ac
e
ar
ea
,
d
ep
th
,
an
d
o
r
g
an
is
m
s
p
r
esen
t
in
th
e
lak
e
an
d
ii
)
h
o
w
d
o
th
e
Ph
y
s
ico
ch
em
ical
ch
ar
ac
ter
is
tics
o
f
lak
e
wate
r
b
e
d
escr
ib
ed
in
ter
m
s
o
f
co
n
ce
n
tr
atio
n
o
f
s
elec
ted
h
ea
v
y
m
etal
s
in
lak
e
wate
r
,
th
e
co
n
ce
n
tr
atio
n
o
f
s
elec
ted
h
ea
v
y
m
etals
in
s
ed
im
en
ts
;
an
d
o
th
er
p
h
y
s
ico
ch
em
ical
p
ar
am
eter
s
.
T
h
r
o
u
g
h
th
ese
in
q
u
ir
ies,
th
e
s
tu
d
y
aim
s
to
c
o
n
tr
ib
u
te
v
alu
ab
le
i
n
s
ig
h
ts
in
to
th
e
c
u
r
r
en
t
s
tate
o
f
Ma
p
a
n
u
ep
e
L
ak
e
a
n
d
p
av
e
th
e
way
f
o
r
in
f
o
r
m
ed
c
o
n
s
er
v
a
tio
n
an
d
m
an
ag
em
e
n
t stra
teg
ies.
2.
RE
S
E
ARCH
M
E
T
H
O
D
2
.
1
.
Resea
rc
h desi
g
n
T
h
is
s
tu
d
y
u
s
ed
a
d
escr
ip
tiv
e
ex
p
er
im
en
tal
d
esig
n
in
co
r
p
o
r
atin
g
b
o
th
q
u
a
n
titativ
e
an
d
q
u
alitativ
e
ap
p
r
o
ac
h
es
to
co
m
p
r
e
h
en
s
iv
ely
ass
ess
th
e
p
h
y
s
ical
p
r
o
f
ilin
g
an
d
p
h
y
s
ico
ch
em
ical
c
h
ar
ac
ter
izatio
n
o
f
Ma
p
an
u
ep
e
L
ak
e
.
T
h
r
o
u
g
h
r
ig
o
r
o
u
s
d
ata
c
o
llectio
n
a
n
d
a
n
aly
s
is
,
th
is
r
esear
ch
p
r
o
v
id
es
a
h
o
lis
tic
u
n
d
er
s
tan
d
i
n
g
o
f
th
e
la
k
e'
s
g
eo
lo
g
ical,
ec
o
lo
g
ical,
an
d
en
v
ir
o
n
m
e
n
tal
d
y
n
am
ics.
T
h
e
d
esig
n
is
cr
u
cial
to
f
ac
ilit
ate
in
f
o
r
m
ed
c
o
n
s
er
v
atio
n
an
d
m
an
ag
em
e
n
t stra
teg
ies f
o
r
s
u
s
tain
ab
le
d
ev
elo
p
m
en
t.
2.
2.
Study
a
re
a
s
T
h
e
s
ite
lo
ca
ted
at
Ma
p
an
u
e
p
e
L
ak
e
(
1
4
°5
9
'
0
"
N
1
2
0
°1
7
'
30
"
E
)
is
a
r
esu
lt
o
f
th
e
co
n
f
lu
en
ce
o
f
Ma
r
ella
an
d
Ma
p
an
u
e
p
e
R
iv
e
r
s
,
wh
er
e
th
e
y
m
e
r
g
e
t
o
f
o
r
m
th
e
San
to
T
o
m
as
R
iv
er
(
s
ee
Fig
u
r
e
1
)
.
Fig
u
r
e
1
also
s
h
o
ws
th
e
d
if
f
er
en
t
s
am
p
lin
g
s
tatio
n
s
u
s
ed
in
th
e
s
tu
d
y
wh
ich
in
clu
d
e
Ma
p
an
u
ep
e
L
a
k
e,
San
Ma
r
ce
lin
o
,
Evaluation Warning : The document was created with Spire.PDF for Python.
I
SS
N
:
2
2
5
2
-
8
8
1
4
I
n
t J Ad
v
Ap
p
l Sci
,
Vo
l.
13
,
No
.
4
,
Dec
em
b
er
2
0
2
4
:
854
-
8
63
856
Z
am
b
ales,
Ph
ilip
p
in
es
(
Fig
u
r
e
1
(
a)
)
,
Ag
lao
(
Fig
u
r
e
1
(
b
)
)
,
C
am
alca
(
Fig
u
r
e
1
(
c)
)
,
E
ast
o
f
A
g
lao
(
Fig
u
r
e
1
(
d
)
)
,
I
n
b
etwe
en
C
a
m
a
l
ca
an
d
P
i
l
i
(
F
i
g
u
r
e
1
(
e)
)
,
L
u
m
i
b
ao
(
F
i
g
u
r
e
1
(
f
)
)
,
an
d
P
i
l
i
(
F
i
g
u
r
e
1
(
g
)
)
.
F
o
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.
(
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Fig
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Evaluation Warning : The document was created with Spire.PDF for Python.
I
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t J Ad
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Ap
p
l Sci
I
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N:
2252
-
8
8
1
4
A
s
s
es
s
men
t o
f h
ea
vy
meta
ls
co
n
ce
n
tr
a
tio
n
o
f Ma
p
a
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ep
e
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Za
mb
a
les,
… (
Ma
.
S
h
iela
G.
Men
d
o
z
a
)
857
2.
3
.
I
ns
t
rum
ent
T
h
e
r
esear
ch
er
s
u
s
ed
th
e
w
ater
an
d
s
ed
im
e
n
t
an
aly
s
is
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g
u
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et
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Dep
ar
tm
en
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E
n
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ir
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t
a
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d
Natu
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R
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u
r
ce
s
Ad
m
in
i
s
tr
a
tiv
e
Or
d
er
(
DAO)
3
4
[
2
7
]
an
d
DAO
3
5
[
2
8
]
.
E
n
ab
lin
g
th
e
lab
o
r
ato
r
y
in
s
tr
u
m
en
t
to
b
e
p
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d
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f
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r
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in
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tr
u
m
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ts
with
th
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s
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d
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k
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w
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s
tan
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d
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eter
m
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f
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ed
im
en
t sam
p
les.
2.
4
.
Wa
t
er
qu
a
lity
a
s
s
ess
m
ent
Six
s
am
p
lin
g
s
tatio
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s
in
th
e
lak
e
wer
e
s
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ted
b
ased
o
n
th
eir
ex
is
tin
g
lan
d
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s
e
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d
n
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r
n
ess
to
th
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p
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in
t
s
o
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ce
o
f
h
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m
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.
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r
pH
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eter
m
in
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,
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h
e
p
H
le
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el
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m
ea
s
u
r
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s
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g
E
u
tec
h
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tr
u
m
en
ts
.
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h
e
co
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d
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ctiv
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m
ea
s
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r
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s
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g
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ak
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eter
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h
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ch
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ar
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p
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m
eter
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r
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r
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g
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ize
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tis
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h
en
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ea
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r
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a
b
u
f
f
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r
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d
ar
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with
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k
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th
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b
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r
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les
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d
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r
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ed
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eter
h
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d
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ilized
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h
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SS
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s
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g
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ch
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el,
f
ilter
m
em
b
r
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e
f
r
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m
th
e
Nik
asan
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r
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ce
d
u
r
e
.
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ater
s
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p
les
wer
e
h
o
m
o
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en
ized
,
weig
h
ed
2
0
g
i
n
to
4
0
0
m
l
b
ea
k
er
,
f
ilter
th
e
s
am
p
les
u
s
in
g
B
u
ch
n
er
f
u
n
n
e
l/
f
ilter
m
em
b
r
an
e,
wash
ed
th
e
f
ilter
p
ap
e
r
a
n
d
t
h
e
r
esid
u
e
with
d
eio
n
ized
wate
r
s
ev
er
al
tim
es
u
n
til
th
e
co
lo
r
atio
n
was
r
em
o
v
ed
,
f
ilter
p
ap
er
s
wer
e
o
v
en
-
d
r
ied
at
5
0
0
C
,
co
o
led
in
s
id
e
a
d
e
s
icca
to
r
an
d
weig
h
e
d
f
o
r
co
m
p
u
tatio
n
u
s
in
g
(
1
)
wh
er
ea
s
W
1
(
weig
h
t
o
f
s
am
p
le
an
d
f
ilter
p
ap
e
r
)
a
n
d
W
2
(
weig
h
t
o
f
d
r
ied
s
am
p
le)
an
d
W
s
(
weig
h
t
o
f
s
am
p
le)
.
%
.
=
1
−
2
×
100
(
1
)
Fo
r
to
tal
d
is
s
o
lv
ed
s
o
lid
s
(
T
DS)
,
wate
r
s
am
p
les
wer
e
h
o
m
o
g
en
ized
u
s
in
g
ag
itatio
n
,
f
i
lter
ed
with
o
r
d
in
ar
y
f
ilter
p
ap
er
,
th
e
f
iltra
te
was
co
llected
.
E
ac
h
s
am
p
le
was
al
iq
u
o
ted
2
5
m
l
an
d
tr
a
n
s
f
er
r
ed
in
a
clea
n
p
r
ev
io
u
s
ly
tar
ed
5
0
m
l
b
ea
k
er
.
(
W
eig
h
t
o
f
th
e
tar
ed
b
ea
k
er
s
w
as
r
ec
o
r
d
ed
A)
.
Sam
p
les
w
er
e
ev
ap
o
r
ated
a
n
d
th
e
b
ea
k
er
w
as
co
v
er
ed
with
a
watc
h
g
lass
to
av
o
id
lo
s
s
es d
u
e
to
s
p
atter
in
g
af
ter
t
h
e
b
r
ea
k
e
r
s
wer
e
d
r
ied
in
a
n
o
v
en
at
1
,
050
C
.
Af
ter
co
o
lin
g
in
s
id
e
th
e
d
esiccato
r
weig
h
t
ed
an
d
r
ec
o
r
d
e
d
weig
h
t
as
B
.
C
o
m
p
u
tatio
n
s
wer
e
d
o
n
e
as % T
DS
(
2
)
.
%
25
−
=
×
100
(
2
)
2.
5
.
H
ea
v
y
m
et
a
l det
er
m
i
na
t
io
n
W
ater
s
am
p
les
wer
e
co
llecte
d
at
m
id
-
d
e
p
th
u
s
in
g
an
im
p
r
o
v
is
ed
wate
r
s
am
p
ler
,
s
am
p
les
wer
e
f
ilter
ed
with
#
4
2
W
h
atm
an
f
ilter
p
ap
er
a
n
d
wer
e
s
en
t
to
th
e
U
m
ico
r
e
s
p
ec
ialty
ch
em
icals
lab
o
r
ato
r
y
t
o
an
aly
z
e
im
p
u
r
ities
u
s
in
g
I
C
P
-
OE
S
5
1
1
0
.
T
r
ac
e
elem
en
ts
/h
e
av
y
m
etal
co
n
ce
n
tr
atio
n
s
,
p
ar
t
icu
lar
ly
ca
d
m
iu
m
,
lead
,
co
p
p
er
,
an
d
zin
c,
wer
e
m
ea
s
u
r
ed
u
s
in
g
a
to
m
ic
ab
s
o
r
p
tio
n
s
p
ec
tr
o
m
etr
y
(
AAS
)
(
A
A
7
0
0
0
Sh
im
ad
zu
)
.
T
wo
r
ep
licate
s
am
p
les
p
er
s
am
p
lin
g
s
tatio
n
wer
e
co
llected
an
d
an
aly
ze
d
.
T
h
e
m
ea
s
u
r
ed
p
ar
am
eter
s
wer
e
co
m
p
ar
ed
ag
ain
s
t th
e
p
r
escr
ib
ed
s
tan
d
ar
d
lim
its
s
et
b
y
th
e
D
AO
3
4
an
d
DAO
3
5
.
2.
6
.
L
a
k
e
s
urf
a
ce
s
edim
ent
s
a
m
ple
At
ea
ch
d
esig
n
ated
s
tatio
n
,
s
e
d
im
en
ts
wer
e
co
llected
at
a
d
ep
th
o
f
0
-
1
0
cm
u
s
in
g
a
f
a
b
r
i
ca
ted
Van
V
ee
n
g
r
ab
s
am
p
ler
.
A
to
tal
o
f
1
0
s
ed
im
en
t
s
am
p
les
wer
e
co
llected
in
f
iv
e
s
ed
im
en
t
s
am
p
lin
g
s
tatio
n
s
weig
h
in
g
1
k
g
ea
ch
.
T
h
e
c
o
llected
s
ed
im
en
t
s
am
p
le
was
p
lace
d
in
a
s
ter
ile
zip
lo
c
.
T
h
e
s
o
il
s
am
p
les
wer
e
in
itially
s
u
b
jecte
d
to
x
-
r
ay
f
lu
o
r
escen
ce
s
p
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tr
o
s
co
p
y
(
XR
F)
to
d
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m
in
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th
e
t
y
p
es
an
d
lev
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o
f
m
etals
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th
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g
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id
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o
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io
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e
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ied
b
ased
o
n
th
eir
co
n
ce
n
tr
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an
d
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icity
lev
els.
T
h
e
s
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p
les
wer
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r
ied
,
p
o
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e
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an
d
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esh
4
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lab
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h
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ied
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ed
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les
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ix
e
d
th
o
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g
h
ly
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n
d
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ested
1
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h
with
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u
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with
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les
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l
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r
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5
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aly
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ar
am
eter
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wer
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et
u
p
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if
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Um
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e
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lab
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AAS
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ically
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aly
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e
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etals
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r
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tially
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atic
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2.
7
.
Da
t
a
a
na
ly
s
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T
h
e
d
ata
wer
e
t
r
ea
ted
u
s
in
g
s
i
m
p
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s
tatis
tical
to
o
ls
lik
e
av
er
ag
e
o
r
weig
h
te
d
m
ea
n
.
Q
u
alitativ
e
d
ata
wer
e
an
aly
ze
d
th
em
atica
lly
b
ased
o
n
th
e
ex
i
s
tin
g
liter
atu
r
e.
T
h
e
r
esear
ch
er
s
u
s
ed
SP
SS
v
2
5
f
o
r
th
e
d
ata
p
r
o
ce
s
s
in
g
.
Evaluation Warning : The document was created with Spire.PDF for Python.
I
SS
N
:
2
2
5
2
-
8
8
1
4
I
n
t J Ad
v
Ap
p
l Sci
,
Vo
l.
13
,
No
.
4
,
Dec
em
b
er
2
0
2
4
:
854
-
8
63
858
3.
RE
SU
L
T
S
AND
D
I
SCU
SS
I
O
N
3
.
1
.
P
r
o
f
ile
o
f
M
a
pa
nu
epe
L
a
k
e
Ma
p
an
u
ep
e
L
ak
e'
s
p
r
o
f
ile
is
d
escr
ib
ed
in
te
r
m
s
o
f
wate
r
s
u
r
f
ac
e
ar
ea
;
d
ep
th
;
an
d
o
r
g
an
is
m
s
p
r
esen
t
in
th
e
lak
e.
Ma
p
an
u
ep
e
lak
e
(
1
4
°5
9
'
0
"
N
1
2
0
°1
7
'
3
"
E
)
is
lo
ca
ted
in
Z
am
b
ales,
C
en
tr
al
L
u
zo
n
,
Ph
ilip
p
in
es.
T
h
e
lak
e'
s
g
o
v
er
n
in
g
b
o
d
y
is
n
o
t
s
p
ec
if
ied
,
its
p
r
o
tectiv
e
s
t
atu
s
is
n
o
t
p
r
o
tecte
d
,
a
n
d
its
c
lass
is
n
o
t
class
if
ied
[
2
9
]
.
W
ater
s
u
r
f
ac
e
ar
ea
.
B
ef
o
r
e
th
e
in
f
am
o
u
s
v
o
lcan
ic
er
u
p
tio
n
o
f
1
9
9
1
,
th
e
Ma
p
an
u
e
p
e
R
iv
er
d
r
ain
ed
an
ar
ea
o
f
8
8
k
m
2
in
a
r
o
c
k
y
wa
ter
s
h
ed
lo
ca
ted
s
o
u
th
o
f
M
o
u
n
t
Pin
atu
b
o
.
C
o
n
v
e
r
g
in
g
with
th
e
Ma
r
ella
R
iv
er
,
wh
ich
d
escen
d
ed
th
e
s
o
u
t
h
west
f
lan
k
o
f
Pin
atu
b
o
,
th
e
M
ap
an
u
ep
e
R
iv
er
f
o
r
m
ed
th
e
San
to
T
o
m
as
R
iv
er
,
tr
ac
in
g
th
e
n
o
r
t
h
er
n
ed
g
e
o
f
i
ts
ex
p
an
s
iv
e
2
3
5
km
2
allu
v
ial
p
lain
o
n
its
jo
u
r
n
ey
to
th
e
W
est
Ph
ilip
p
in
e
Sea
[
3
0
]
.
T
h
e
er
u
p
tio
n
o
f
Mo
u
n
t
Pin
atu
b
o
g
en
er
ate
d
s
ig
n
if
ican
t
lah
ar
s
th
at
d
escen
d
ed
alo
n
g
th
e
Ma
r
ella
R
iv
er
,
o
b
s
tr
u
ctin
g
th
e
f
lo
w
o
f
th
e
M
ap
an
u
ep
e
R
iv
er
a
n
d
g
iv
in
g
r
is
e
to
th
e
lak
e
th
at
n
o
w
s
h
ar
es
its
n
am
e
[
3
0
]
.
T
h
e
ev
o
lu
tio
n
o
f
Ma
p
an
u
ep
e
L
a
k
e
h
as
b
ee
n
s
tu
d
ied
s
in
ce
its
in
c
ep
tio
n
[
2
6
]
–
[
3
1
]
.
At
its
p
ea
k
,
th
e
lak
e
co
v
er
e
d
an
ar
ea
o
f
6
.
7
k
m
2
with
a
v
o
lu
m
e
o
f
ap
p
r
o
x
im
ately
7
.
5
×1
0
7
m
3
[
2
7
]
.
B
ased
o
n
B
r
illo
'
s
[
3
2
]
m
eta
-
an
aly
s
is
s
tu
d
y
,
Ma
p
an
u
ep
e
L
ak
e
is
co
n
s
id
e
r
ed
a
b
ig
lak
e
in
th
e
Ph
ili
p
p
in
es
s
in
ce
th
e
lak
e
h
as
a
s
u
r
f
ac
e
ar
e
a
o
f
6
4
6
.
0
6
h
ec
tar
es.
L
a
k
es a
r
e
co
n
s
id
er
ed
b
ig
with
ab
o
v
e
2
0
0
h
ec
tar
es o
f
s
u
r
f
ac
e
ar
ea
.
Dep
th
t
h
e
s
wif
t
b
u
ild
u
p
o
f
s
ed
im
en
t
alo
n
g
th
e
B
u
ca
o
a
n
d
San
to
T
o
m
as
R
iv
er
s
h
as
b
lo
ck
ed
th
e
en
tr
an
ce
s
o
f
tr
ib
u
tar
ies
n
o
t
as
s
o
ciate
d
with
Mo
u
n
t
Pin
atu
b
o
an
d
h
as
led
to
t
h
e
f
o
r
m
atio
n
o
f
p
o
n
d
s
a
n
d
lak
es
[
3
0
]
.
Am
o
n
g
th
ese
lah
ar
-
d
a
m
m
ed
lak
e
s
,
th
e
la
r
g
est
is
cu
r
r
en
tly
Ma
p
an
u
ep
e
L
a
k
e
,
s
itu
ated
in
th
e
s
o
u
th
wester
n
r
eg
io
n
o
f
th
e
v
o
lcan
o
,
at
t
h
e
ju
n
ctio
n
o
f
th
e
Ma
r
ella
an
d
Ma
p
an
u
e
p
e
r
i
v
er
s
.
B
y
th
e
en
d
o
f
th
e
1
9
9
2
m
o
n
s
o
o
n
s
ea
s
o
n
,
th
e
lak
e
h
ad
an
av
er
a
g
e
d
ep
th
o
f
2
5
m
(
8
2
f
ee
t)
an
d
co
v
er
e
d
an
ar
ea
o
f
ab
o
u
t
8
k
m
2
[
3
3
]
.
Sed
im
e
n
tar
y
f
ill
an
d
g
eo
m
o
r
p
h
o
lo
g
y
s
p
ec
if
y
th
at
s
im
ilar
lah
ar
-
d
am
m
e
d
lak
es
i
n
h
ab
it
ed
th
e
ar
ea
d
u
r
i
n
g
at
least
two
p
r
ec
ed
i
n
g
v
o
lcan
i
c
er
u
p
tio
n
s
o
f
Mt.
Pin
atu
b
o
[
3
0
]
,
[
3
4
]
.
Sev
e
r
al
ter
r
ac
es
b
o
r
d
er
th
e
Ma
p
an
u
ep
e
ca
tch
m
en
t
ar
ea
an
d
t
h
e
co
n
tig
u
o
u
s
v
alley
o
f
t
h
e
San
to
T
o
m
as
R
iv
er
.
On
e
ter
r
ac
e,
1
5
m
h
ig
h
er
th
an
th
e
p
r
e
-
er
u
p
tio
n
f
l
o
o
r
o
f
th
e
San
to
T
o
m
as
r
iv
er
at
Sit
io
(
h
am
let)
Dala
n
ao
an
is
co
m
p
o
s
ed
o
f
“p
y
r
o
clastic
-
f
lo
w
d
ep
o
s
its
o
v
er
lain
b
y
lah
a
r
d
ep
o
s
its
”
[3
1]
.
Or
g
a
n
is
m
s
p
r
esen
t
in
th
e
lak
e
.
Ma
p
an
u
ep
e
L
a
k
e
is
a
th
r
iv
in
g
p
lace
o
f
d
if
f
e
r
en
t o
r
g
an
is
m
s
as sh
o
wn
in
T
ab
le
1
.
Z
af
ar
alla
an
d
Or
o
zc
o
[
3
5
]
co
n
d
u
cted
a
s
tu
d
y
to
ex
a
m
in
e
th
e
ch
ar
ac
ter
is
tics
o
f
th
e
p
h
y
t
o
p
lan
k
to
n
co
m
m
u
n
ity
in
Ma
p
a
n
u
ep
e
L
a
k
e
,
wh
ich
was
f
o
r
m
e
d
b
y
lah
ar
s
,
ab
o
u
t
ce
r
tain
lim
n
o
lo
g
ica
l
f
ac
to
r
s
.
T
h
e
s
tu
d
y
id
en
tifie
d
f
i
v
e
g
r
o
u
p
s
o
f
alg
ae
:
C
y
an
o
p
h
y
ce
ae
,
C
h
lo
r
o
p
h
y
ce
ae
,
B
ac
cilar
io
p
h
y
ce
ae
,
Din
o
p
h
y
ce
ae
,
a
n
d
C
h
lo
r
o
m
o
n
a
d
ac
ea
e.
Am
o
n
g
th
ese,
B
ac
cilar
io
p
h
y
tes
wer
e
t
h
e
m
o
s
t
p
r
ev
alen
t
am
o
n
g
th
e
b
lu
e
-
g
r
ee
n
alg
ae
(
B
GA)
,
f
o
llo
wed
b
y
th
e
C
y
an
o
p
h
y
ce
ae
,
with
B
GA
r
ep
r
esen
tativ
es
co
m
p
r
is
in
g
less
th
an
5
0
%
o
f
th
is
g
r
o
u
p
.
T
h
e
b
io
lo
g
ical
an
aly
s
is
o
f
B
u
h
awe
n
,
a
s
ite
d
ir
ec
tly
im
p
ac
te
d
b
y
m
i
n
e
tailin
g
s
,
s
u
g
g
ested
th
at
th
ese
p
o
llu
tan
ts
lik
ely
co
n
tr
ib
u
te
to
th
e
r
ed
u
ce
d
s
p
ec
ies
d
iv
er
s
ity
co
m
p
ar
ed
t
o
o
th
er
ar
ea
s
with
in
th
e
lak
e.
I
n
co
n
tr
ast
to
lak
es
s
u
ch
as
T
aa
l,
Sap
an
g
,
C
au
ay
a
n
,
an
d
L
o
o
c
L
a
k
e
,
Ma
p
an
u
ep
e
L
ak
e
ex
h
ib
its
a
lo
wer
d
i
v
er
s
ity
o
f
alg
al
s
p
ec
ies,
with
eu
g
len
ac
ea
e
an
d
d
in
o
p
h
y
ce
ae
b
ein
g
th
e
least a
b
u
n
d
a
n
t
g
r
o
u
p
s
.
C
lad
o
ce
r
an
s
ar
e
o
n
e
o
f
th
e
b
ig
g
e
s
t
zo
o
p
lan
k
to
n
g
r
o
u
p
s
th
at
s
er
v
e
as
f
o
o
d
f
o
r
f
is
h
an
d
as
a
m
etr
ic
o
f
m
ar
in
e
ec
o
s
y
s
tem
h
ea
lth
.
I
ts
d
iv
er
s
ity
an
d
d
is
tr
ib
u
tio
n
i
n
f
r
esh
wate
r
ec
o
s
y
s
tem
s
,
lik
e
th
e
Ma
p
an
u
ep
e
lak
e
,
ar
e
also
ev
id
e
n
t
[
3
6
]
.
Sev
e
r
al
s
p
ec
ies
f
r
o
m
f
am
ilies
Mo
in
id
ae
,
B
o
s
m
in
id
ae
,
Sid
id
ae
,
an
d
C
h
y
d
o
r
id
ae
wer
e
lik
ewise
s
ee
n
f
lo
u
r
is
h
in
g
in
th
e
lak
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[
3
6
]
.
Fam
ily
Sid
id
ae
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d
C
h
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ag
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in
to
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lak
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[
3
7
]
.
T
h
e
d
a
m
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tch
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f
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am
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o
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s
[
3
8
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.
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r
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1
6
r
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p
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p
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f
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d
O
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z
c
o
[
3
5
]
Zo
o
p
l
a
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k
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n
s
M
o
i
n
a
m
i
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r
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a
n
o
so
m
a
s
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r
si
,
Lo
p
e
z
e
t
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l
.
[
2
9
]
a
n
d
P
a
s
c
u
a
l
e
t
a
l
.
[
3
6
]
Evaluation Warning : The document was created with Spire.PDF for Python.
I
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t J Ad
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Ap
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l Sci
I
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N:
2252
-
8
8
1
4
A
s
s
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men
t o
f h
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meta
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tr
a
tio
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f Ma
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Ma
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Men
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859
3
.
2
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P
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[
2
7
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[
2
8
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.
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4
0
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m
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n
tr
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s
ed
im
en
ts
,
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ab
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3
s
h
o
ws th
e
co
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n
tr
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f
s
elec
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m
th
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s
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is
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ally
with
in
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s
tan
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lim
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s
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g
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th
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ts
ar
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h
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er
aq
u
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r
eso
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s
(
class
C
)
,
ag
r
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ltu
r
e,
ir
r
ig
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n
,
an
d
liv
esto
ck
wate
r
in
g
(
class
D)
.
Evaluation Warning : The document was created with Spire.PDF for Python.
I
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2
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Ap
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13
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2
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[
4
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wh
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f
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4
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h
as
th
e
h
ig
h
est
T
SS
(
6
3
3
m
g
/L
)
wh
ile
C
am
alca
h
as
th
e
lo
west
(
2
9
m
g
/L
)
.
T
h
e
h
i
g
h
er
th
e
T
SS
v
alu
e,
th
e
lo
wer
th
e
wate
r
'
s
ca
p
ac
ity
to
s
u
s
tain
aq
u
atic
life
d
u
e
to
r
ed
u
ce
d
lig
h
t
p
en
etr
atio
n
d
is
tu
r
b
in
g
p
lan
t
p
h
o
to
s
y
n
t
h
esis
[
3
]
.
Sin
ce
th
e
o
b
tai
n
ed
T
SS
is
with
in
th
e
s
tan
d
ar
d
,
t
h
e
lak
e'
s
m
ar
in
e
life
is
in
g
r
ea
t
co
n
d
i
tio
n
.
T
h
e
lo
w
T
SS
v
alu
e
also
c
o
in
cid
es
with
t
h
e
h
ig
h
tr
an
s
p
ar
e
n
cy
v
alu
es
in
all
s
am
p
lin
g
s
ites
.
T
DS
o
f
t
h
e
s
am
p
lin
g
ar
ea
s
r
an
g
e
s
f
r
o
m
0
.
0
7
to
0
.
1
5
%.
T
h
is
s
u
g
g
ests
th
at
th
e
T
DS
o
f
Ma
p
an
u
ep
e
L
ak
e
wate
r
is
with
in
th
e
s
tan
d
a
r
d
.
T
h
e
s
tu
d
y
r
esu
lts
s
u
p
p
o
r
t
th
e
f
in
d
in
g
s
o
f
An
g
ag
ao
et
a
l.
[
4
5
]
wh
ich
ass
es
s
ed
th
e
wate
r
q
u
ality
o
f
L
an
ao
L
ak
e
,
Ph
ilip
p
in
es.
Sev
er
al
s
tu
d
ies
a
ls
o
r
ep
o
r
ted
t
h
at
th
e
p
h
y
s
ico
-
ch
em
ical
p
ar
a
m
eter
s
o
f
s
o
m
e
o
f
th
e
Ph
ilip
p
i
n
e
b
o
d
ies o
f
wate
r
a
r
e
with
in
th
e
ac
ce
p
tab
le
r
an
g
e
[
4
6
]
–
[
4
9
]
.
T
ab
le
3
.
C
o
n
ce
n
tr
atio
n
lev
el
o
f
s
elec
ted
h
ea
v
y
m
etals
in
s
ed
im
en
ts
H
e
a
v
y
M
e
t
a
l
s
C
o
n
c
e
n
t
r
a
t
i
o
n
(
mg
/
k
g
)
*
A
v
e
S
t
d
A
g
l
a
o
Ea
st
A
g
l
a
o
Lu
m
i
b
a
o
C
a
ma
l
c
a
P
i
l
i
A
l
(
3
9
6
.
1
5
2
)
4
6
.
1
3
3
9
.
7
6
8
4
.
1
9
7
4
.
3
3
1
4
8
.
7
7
7
8
.
6
4
---
A
s (1
8
8
.
9
8
0
)
0
.
0
1
0
.
1
7
0
.
0
1
0
.
7
4
0
.
3
4
0
.
2
5
---
B
a
(
4
5
5
.
4
0
3
)
0
.
0
7
0
.
1
6
0
.
2
7
0
.
2
5
0
.
6
6
0
.
2
8
---
C
a
(
3
9
6
.
8
4
7
)
1
3
.
3
4
2
8
.
7
8
2
5
.
8
7
7
.
3
0
2
3
.
5
6
1
9
.
7
7
---
C
d
(
2
1
4
.
4
3
9
)
0
.
0
0
0
.
0
0
0
.
0
1
0
.
0
1
0
.
0
1
0
.
0
1
---
C
o
(
2
3
8
.
8
9
2
)
0
.
0
0
0
.
0
0
0
.
0
6
0
.
0
2
0
.
0
4
0
.
0
2
---
C
r
(
2
6
7
.
7
1
6
)
0
.
3
8
a
0
.
2
1
a
0
.
3
1
a
0
.
2
4
a
0
.
4
2
a
0
.
3
1
a
0
.
0
1
C
u
(
3
2
4
.
7
5
4
)
0
.
9
2
0
.
4
2
1
.
8
0
1
.
6
7
2
.
2
6
1
.
4
1
---
F
e
(
2
5
9
.
9
4
0
)
2
3
0
.
3
4
1
2
6
.
1
5
2
1
7
.
1
4
5
0
1
.
5
8
3
2
6
.
7
3
2
8
0
.
3
9
---
K
(
7
6
6
.
4
9
1
)
1
.
2
4
2
.
7
9
3
.
8
8
3
.
5
1
3
.
3
8
2
.
9
6
---
M
g
(
2
8
5
.
2
1
3
)
8
.
8
7
1
7
.
6
6
2
6
.
3
8
3
8
.
1
4
2
7
.
8
8
2
3
.
7
9
---
M
n
(
2
5
7
.
6
1
0
)
5
.
2
8
1
.
3
5
1
.
9
6
1
.
7
2
2
.
0
0
2
.
4
6
---
N
a
(
5
8
9
.
5
9
2
)
4
.
0
2
5
.
2
1
6
.
2
7
4
.
3
2
5
.
4
1
5
.
0
5
---
P
b
(
2
8
3
.
3
0
5
)
1
.
1
5
a
0
.
6
1
a
1
.
0
5
a
2
.
6
1
a
2
.
1
8
a
1
.
5
2
a
0
.
0
1
S
(
1
8
1
.
9
7
2
)
3
.
0
4
3
.
5
7
7
.
8
0
2
2
.
2
2
8
.
4
3
9
.
0
1
---
S
b
(
2
0
6
.
8
3
4
)
0
.
0
8
0
.
0
5
0
.
0
4
0
.
1
4
0
.
0
5
0
.
0
7
---
S
i
(
2
5
1
.
6
1
1
)
9
.
6
5
9
.
2
5
1
0
.
0
1
8
.
1
6
8
.
1
1
9
.
0
4
---
S
n
(
1
8
9
.
9
2
5
)
0
.
0
2
0
.
0
2
0
.
0
2
0
.
0
2
0
.
0
2
0
.
0
2
---
Zn
(
2
0
6
.
2
0
0
)
0
.
4
5
0
.
2
4
1
.
9
5
0
.
6
0
1
.
5
5
0
.
9
6
---
N
i
(
2
3
2
.
1
3
8
)
0
.
8
1
1
.
1
2
0
.
8
0
1
.
0
0
0
.
7
3
0
.
8
9
---
*
R
e
su
l
t
s
a
r
e
a
n
a
v
e
r
a
g
e
o
f
t
w
o
r
e
p
l
i
c
a
t
i
o
n
s
a
a
b
o
v
e
t
h
e
s
t
a
n
d
a
r
d
l
i
mi
t
Evaluation Warning : The document was created with Spire.PDF for Python.
I
n
t J Ad
v
Ap
p
l Sci
I
SS
N:
2252
-
8
8
1
4
A
s
s
es
s
men
t o
f h
ea
vy
meta
ls
co
n
ce
n
tr
a
tio
n
o
f Ma
p
a
n
u
ep
e
L
a
ke
,
Za
mb
a
les,
… (
Ma
.
S
h
iela
G.
Men
d
o
z
a
)
861
T
ab
le
4
.
Oth
er
p
h
y
s
ico
ch
em
ic
al
p
ar
am
eter
s
o
f
t
h
e
lak
e
wate
r
S
a
mp
l
i
n
g
a
r
e
a
C
o
n
d
u
c
t
i
v
i
t
y
(
μs)
pH
TSS
(
mg
/
l
)
TD
S
(
%)
A
g
l
a
o
5
1
2
4
.
4
4
5
2
1
0
.
2
1
W
e
st
a
g
l
a
o
5
1
0
4
.
5
3
5
2
8
0
.
2
1
Lu
m
i
b
a
o
5
0
5
4
.
8
1
4
8
8
0
.
0
7
C
a
ma
l
c
a
4
9
8
4
.
9
0
6
3
3
0
.
1
8
I
n
b
e
t
w
e
e
n
C
a
ma
l
c
a
5
4
3
3
.
9
3
29
0
.
1
8
P
i
l
i
5
2
4
4
.
3
0
80
0
.
1
5
S
t
a
n
d
a
r
d
s
e
t
b
y
D
EN
R
-
EM
B
f
o
r
c
l
a
ss
C
---
6
.
5
-
9
.
0
N
o
t
m
o
r
e
t
h
a
n
3
0
mg
/
L
i
n
c
r
e
a
s
e
---
S
t
a
n
d
a
r
d
s
e
t
b
y
D
EN
R
-
EM
B
f
o
r
c
l
a
ss
D
3
0
0
6
.
5
-
8
.
5
N
o
t
m
o
r
e
t
h
a
n
6
0
mg
/
L
i
n
c
r
e
a
s
e
1
,
0
0
0
I
n
t
e
r
p
r
e
t
a
t
i
o
n
o
f
D
a
t
a
W
i
t
h
i
n
t
h
e
s
t
a
n
d
a
r
d
W
i
t
h
i
n
t
h
e
s
t
a
n
d
a
r
d
W
i
t
h
i
n
t
h
e
s
t
a
n
d
a
r
d
W
i
t
h
i
n
t
h
e
s
t
a
n
d
a
r
d
4.
CO
NCLU
SI
O
N
Ma
p
an
u
ep
e
L
ak
e
em
er
g
es
as
a
s
ig
n
if
ican
t
b
o
d
y
o
f
wate
r
in
th
e
Ph
ilip
p
in
es
an
d
a
th
r
iv
in
g
p
lace
f
o
r
d
iv
er
s
e
o
r
g
a
n
is
m
s
an
d
m
icr
o
o
r
g
an
is
m
s
.
I
m
p
o
r
tan
tly
,
th
e
co
n
ce
n
tr
atio
n
o
f
h
ea
v
y
m
etals
in
b
o
th
th
e
la
k
e
wate
r
an
d
s
ed
im
en
ts
g
en
er
ally
ad
h
e
r
es
to
r
eg
u
lato
r
y
s
tan
d
a
r
d
s
,
s
ig
n
alin
g
o
v
er
all
en
v
ir
o
n
m
en
tal
h
ea
lth
.
M
o
r
eo
v
er
,
k
ey
p
h
y
s
ico
ch
em
ical
p
ar
am
eter
s
ex
h
ib
it
v
alu
es
with
in
ac
ce
p
tab
le
r
an
g
es,
f
u
r
th
er
a
f
f
ir
m
in
g
th
e
la
k
e'
s
ec
o
lo
g
ical
in
teg
r
ity
.
Fu
tu
r
e
s
t
u
d
ies
m
ay
ass
ess
th
e
b
io
d
iv
er
s
ity
d
is
tr
ib
u
tio
n
a
n
d
ta
x
o
n
o
m
i
ca
l
class
if
icatio
n
o
f
th
e
lak
e’
s
f
lo
r
a
an
d
f
a
u
n
a.
Ad
d
iti
o
n
ally
,
th
e
r
e
is
a
p
r
ess
in
g
n
ee
d
f
o
r
c
o
m
p
r
e
h
en
s
iv
e
e
v
alu
atio
n
an
d
o
n
g
o
in
g
m
o
n
ito
r
in
g
o
f
th
e
lak
e'
s
wate
r
co
n
d
itio
n
.
T
h
is
p
r
o
ac
tiv
e
ap
p
r
o
ac
h
wo
u
ld
e
n
s
u
r
e
th
e
co
n
ti
n
u
o
u
s
ass
ess
m
en
t
o
f
wate
r
q
u
ality
an
d
s
u
p
p
o
r
t
in
f
o
r
m
ed
d
ec
is
io
n
-
m
a
k
in
g
r
eg
a
r
d
in
g
its
u
s
e
as
an
alter
n
ativ
e
wate
r
r
eso
u
r
ce
,
p
ar
ticu
lar
ly
in
lig
h
t
o
f
th
e
co
m
m
u
n
ity
'
s
escalatin
g
wa
ter
d
em
an
d
.
C
o
llab
o
r
ativ
e
e
f
f
o
r
ts
b
etwe
en
t
h
e
Dep
ar
tm
en
t
o
f
E
n
v
ir
o
n
m
en
t
a
n
d
Natu
r
al
R
eso
u
r
ce
s
,
lo
ca
l
c
o
m
m
u
n
ity
m
em
b
er
s
,
a
n
d
th
e
San
Ma
r
ce
lin
o
lo
ca
l
g
o
v
er
n
m
en
t
u
n
it
ar
e
im
p
er
ativ
e
f
o
r
th
e
s
u
cc
ess
f
u
l
im
p
lem
en
tatio
n
o
f
a
s
tr
ateg
ic
en
v
ir
o
n
m
en
tal
s
u
s
tain
ab
ilit
y
p
lan
f
o
r
th
e
lak
e.
T
h
is
p
lan
s
h
o
u
ld
p
r
i
o
r
itize
b
io
d
iv
er
s
ity
co
n
s
er
v
atio
n
in
itiativ
es
an
d
p
r
o
m
o
te
ec
o
to
u
r
is
m
o
p
p
o
r
tu
n
ities
,
h
ar
n
ess
in
g
th
e
lak
e'
s
n
atu
r
al
b
ea
u
ty
to
b
en
ef
it
b
o
th
th
e
e
n
v
ir
o
n
m
en
t a
n
d
th
e
l
o
ca
l e
co
n
o
m
y
.
ACK
NO
WL
E
DG
E
M
E
NT
S
T
h
e
au
th
o
r
s
ar
e
g
r
atef
u
l
to
Dr
.
Dav
id
C
.
B
u
en
o
o
f
C
o
lu
m
b
an
C
o
lleg
e
Olo
n
g
a
p
o
,
I
n
c.
,
f
o
r
v
alu
ab
le
s
u
g
g
esti
o
n
s
in
im
p
r
o
v
i
n
g
t
h
is
r
esear
ch
ar
ticle,
t
o
th
e
ch
em
is
ts
an
d
lab
o
r
at
o
r
y
an
aly
s
ts
o
f
th
e
Um
ico
r
e
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[
1
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M
.
K
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i
d
,
“
W
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2
]
G
.
A
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.
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R
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