U.S. ENVIRONMENTAL PROTECTION AGENCY
NATIONAL EUTROPHICATION SURVEY
WORKING PAPER SERIES
REPORT
ON
WYFIELD LAKE
LEWIS COUNTY
WASHINGTON
EPA REGION X
WORKING PAPER No, 870
CORVALLIS ENVIRONMENTAL RESEARCH LABORATORY - CORVALLIS, OREGON
and
ENVIRONMENTAL MONITORING & SUPPORT LABORATORY - LAS VEGAS, NEVADA
-------
REPORT
ON
IWFIELD LAKE
LEWIS COUNTY
WASHINGTON
EPA REGION X
WORKING PAPER No, 870
WITH THE COOPERATION OF THE
WASHINGTON DEPARTMENT OF ECOLOGY
AND THE
WASHINGTON NATIONAL GUARD
JULY, 1977
-------
REPORT ON MAYFIELD LAKE
LEWIS COUNTY, WASHINGTON
EPA REGION X
by
National Eutrophication Survey
Water and Land Quality Branch
Monitoring Operations Division
Environmental Monitoring & Support Laboratory
Las Vegas, Nevada
and
Special Studies Branch
Corvallis Environmental Research Laboratory
Corvallis, Oregon
Working Paper No. 870
OFFICE OF RESEARCH AND DEVELOPMENT
U.S. ENVIRONMENTAL PROTECTION AGENCY
July 1977
-------
CONTENTS
Page
Foreword i i
List of Washington Study Lakes iv
Lake and Drainage Area Map v
Sections
I. Conclusions 1
II. Lake and Drainage Basin Characteristics 4
III. Lake Water Quality Summary 6
IV. Nutrient Loadings 12
V. Literature Reviewed 18
VI. Appendices 19
-------
11
FOREWORD
The National EutropMcatlon Survey was Initiated 1n 1972 1n
response to an Administration commitment to Investigate the nation-
wide threat of accelerated eutrophlcatlon to freshwater lakes and
reservoirs.
OBJECTIVES
The Survey was designed to develop, 1n conjunction with state
environmental agencies, Information on nutrient sources, concen-
trations, and impact on selected freshwater lakes as a basis for
formulating comprehensive and coordinated national, regional, and
state management practices relating to point source discharge
reduction and nonpolnt source pollution abatement 1n lake water-
sheds.
ANALYTIC APPROACH
The mathematical and statistical procedures selected for the
Survey's eutrophlcatlon analysis are based on related concepts
that:
a. A generalized representation or model relating
sources, concentrations, and Impacts can be
constructed.
b. By applying measurements of relevant parameters
associated with lake degradation, the generalized
model can be transformed Into an operational
representation of a lake, Its drainage basin, and
related nutrients.
c. With such a transformation, an assessment of the
potential for eutrophlcatlon control can be made.
LAKE ANALYSIS
In this report, the first stage of evaluation of lake and
watershed data collected from the study lake and its drainage
basin 1s documented. The report 1s formatted to provide state
environmental agencies with specific Information for basin
Elannina [§303(e)], water quality criteria/standards review
§303(c)], clean lakes [§314(a,b)], and water quality monitoring
[§106 and §305(b)] activities mandated by the Federal Water
Pollution Control Act Amendments of 1972.
-------
m
Beyond the single lake analysis, broader based correlations
between nutrient concentrations (and loading) and trophic condition
are being made to advance the rationale and data base for refine-
ment of nutrient water quality criteria for the Nation's freshwater
lakes. Likewise, multivariate evaluations for the relationships
between land use, nutrient export, and trophic condition, by lake
class or use, are being developed to assist in the formulation of
planning guidelines and policies by the U.S. Environmental Protection
Agency and to augment plans implementation by the states.
ACKNOWLEDGMENTS
The staff of the National Eutrophication Survey (Office of
Research and Development, U.S. Environmental Protection Agency)
expresses sincere appreciation to the Washington Department of
Ecology for professional involvement, to the Washington National
Guard for conducting the tributary sampling phase of the Survey,
and to those Washington wastewater treatment plant operators who
provided effluent samples and flow data.
Ms. Barbara Blau, Lake Restoration Program, and the staff
of the Washington Department of Ecology, Lake Restoration Program,
provided invaluable lake documentation and counsel during the
Survey, reviewed the preliminary reports and provided critiques
most useful in the preparation of this Working Paper Series.
Major General Howard S. McGee, Adjutant General of Washington,
and Project Officer Colonel Clinton C. Johnson, who directed the
volunteer efforts of the Washington National Guardsmen, are also
gratefully acknowledged for their assistance to the Survey.
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IV
LAKE NAME
NATIONAL EUTROPHICATION SURVEY
STUDY LAKES
STATE OF WASHINGTON
American Lake
Banks Lake
Chelan Lake
Diamond Lake
Green Lake
Keechelus Lake
Mayfield Lake
Medical Lake
Moses Lake
Ozette Lake
Sammamish Lake
Lake Whatcom
Lower Granite Reservoir
COUNTY
Pierce
Grant, Douglas
Chelan
Pend Orel lie
King
Kittitas
Lewis
Spokane
Grant
Clallam
Ki ng
Whatcom
Garfield, Whatcom
-------
MAYFIELD LAKE
Tributary Sampling Site
X Lake Sampling Site
Sewage Treatment Facility
2 4 6 8 Km.
-------
REPORT ON MAYFIELD LAKE, WASHINGTON
STORET NO. 5307
I. CONCLUSIONS
A. Trophic Condition:*
Survey data indicate Mayfield Lake is mesotrophic.
Chlorophyll a_ values ranged from 0.5 yg/1 to 18.0 yg/1, with
a mean of 4.2 yg/1. The potential for primary productivity
as measured by algal assay control yields was low. Of the 13
Washington Lakes sampled in 1975, 7 had higher median total
phosphorus and median inorganic nitrogen values, and 8 had
greater median dissolved orthophosphorus levels.
Survey limnologists did not report any problem conditions
during their visits to the lake.
*See Appendix E.
-------
2 .
B. Rate-Limiting Nutrient:
Algal assay results indicate that Mayfield Lake was limited
by available phosphorus levels during the sample collection times
(03/28/75j 10/30/75). Lake data suggest nitrogen limitation during
the spring and summer sample collection times and phosphorus
limitation during fall.
C. Nutrient Controllability:
1. Point sources -
Point sources were estimated to have contributed 0.9%
of the total phosphorus load to Mayfield Lake. The city of
Morton contributed this entire load. In addition, a fish
hatchery discharges to the northeastern end of the lake, but
nutrient contributions from this source are not known.
The loading calculations for Mayfield Lake indicate a
net export of phosphorus from the lake. This apparent export
may be attributable to lack of information on the nutrient
input from unknown or unmeasured point sources, to failure
to adequately depict annual nutrient loadings from ungaged
tributaries with available estimation means, or to sampling
error. As is, the calculated phosphorus loading for Mayfield
2
Lake is 11.36 g P/m /yr; additional sampling is needed to
determine the true nutrient budget of Mayfield Lake and the
significance of the annual phosphorus loading to the trophic
state of the lake.
-------
2. Nonpoint sources -
The mean annual phosphorus load from nonpoint sources
accounted for 99.1% of the total load reaching Mayfield Lake.
The Cowlitz River contributed 75.5%, Til ton River contributed
16.7%, Klickitat Creek contributed 0.6%, and minor tribu-
taries and immediate drainage were estimated to have contri-
buted 6.1% of the total phosphorus load.
-------
II. LAKE AND DRAINAGE BASIN CHARACTERISTICS
Lake and drainage basin characteristics are itemized below.
Lake morphometry data were provided by Wolcott (1965). Tributary
flow data were provided by the Washington District Office of the
U.S. Geological Survey (USGS). Outlet drainage area includes
the lake surface area. Mean hydraulic retention time was obtained
by dividing the lake volume by mean flow of the outlet. Precipi-
tation values are estimated by methods as outlined in National
Eutrophication Survey (NES) Working Paper No. 175. A table of
metric/English conversions is included as Appendix A.
A. Lake Morphometry:
2
1. Surface area: 8.90 km.
2. Mean depth: 17.6 meters.
3. Maximum depth: 56.4 meters.
4. Volume: 156.653 x 10^ m3.
5. Mean hydraulic retention time: 9 days.
-------
B. Tributary and Outlet:
(See Appendix B for flow data)
1. Tributaries -
Drainage^ Mean flow
Name area (km ) (m3/sec)
A-2 Cowlitz River 2,988.9 155.86
B-l Klickitat Creek 26.9 0.66
D-l Til ton River 365.2 23.98
Minor tributaries and
immediate drainage - 236.1 7.85
Totals 3,617.1 188.35
2. Outlet - A-l Cowlitz River 3,626.0 194.19
C. Precipitation:
1. Year of sampling: 133.7 cm.
2. Mean annual: 116.2 cm.
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III. LAKE WATER QUALITY SUMMARY
Mayfield Lake was sampled three times during the open-water
season of 1975 by means of a pontoon-equipped Huey helicopter. Each
time, samples for physical and chemical parameters were collected
from three stations on the lake and from a number of depths at each
station (see map, page v). During each visit, depth-integrated
samples were collected from each station for chlorophyll a_ analysis
and phytoplankton identification and enumeration. During the first
and last visits, 18.9-liter depth-integrated samples were composited
for algal assays. Maximum depths sampled were 53.3 meters at Station
01, 30.8 meters at Station 02, and 18.0 meters at Station 03. For
a more detailed explanation of NES methods, see NES Working Paper
No. 175.
The results obtained are presented in full in Appendix C and
are summarized in III-A for waters at the surface and at the maximum
depth for each site. Results of the phytoplankton counts and chloro-
phyll ^determinations are included in III-B. Results of the limiting
nutrient study are presented in III-C.
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MAYFIELO LAKE
STOPET CODE 5307
( 3/26/76 )
PHYSICAL AND CHEMICAL CHARACTERISTICS
( 7/17/75 )
( 10/30/75 )
PARAMETER
TEMPERATURE (DEG CENT)
O.-l.S M DEPTH
MAX DEPTH**
DISSOLVED OXYGEN (M<5/L
O.-l.S M DEPTH
MAX DEPTH**
CONDUCTIVITY (UMHOS)
0.-1.5 M DEPTH
MAX DEPTH**
PH (STANDARD UNITS)
O.-l.S M DEPTH
MAX DEPTH**
TOTAL ALKALINITY
0.-1.5 M DEPTH
MAX DEPTH**
AMMONIA (MG/L)
O.-l.S M DEPTH
MAX DEPTH**
KJELOAHL N (MG/L)
0.-1.5 M DEPTH
MAX DEPTH**
6
3
6
3
6
3
6
3
0.005-0
0.005-0
0.090-0
O.ORO-0
0.020-0
0.020-0
0.200-0
0.200-0
.022
.014
.170
.190
.030
.030
.500
.200
O.OnS
0.009
0.1?0
0.1?0
0.0?5
0.020
0.250
0.200
0.0-
18.0-
0.0-
18.0-
0.0-
18.0-
0.0-
18.0-
1.5
51.8
1.5
51.8
l.S
51.8
1.5
51.8
6
3
6
3
6
3
6
3
0.006-0.014
0.011-0.013
0.020-0.060
0.050-0.090
0.020-0.060
0.020-0.020
0.200-0.700
0.200-0.200
0.010
0.012
0.030
0.050
0.030
0.020
0.300
0.200
0.0-
17.1-
0.0-
17.1-
0.0-
17.1-
0.0-
17.1-
1.5
44.8
1.5
44.8
1.5
44.8
1.5
44.8
6
3
6
3
6
3
6
3
0.003-0.007
0.002-0.005
0.040-0.060
0.100-0.200
0.020-0.020
0.020-0.020
0.200-0.200
0.200-0.200
0.005
0.004
0.050
0.120
0.020
0.020
0.200
0.200
0.0- 1.5
16.2- 53.3
0.0- 1.5
16.2- 53.3
0.0- 1.5
16.2- 53.3
0.0- 1.5
16.2- 53.3
SECCHI DISC (METERS)
1.9- 2.9
2.1
2.1- 3.4 2.4
2.4- 2.7 2.4
« N = NO. OF
ao MSXIMUM DEPTH SAMPLED AT EACH SITE
»«» 5 = NO, OF S.ITES SAMPLED ON THI<; DATE
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8
B. Biological Characteristics:
1. Phytoplankton -
Sampling
Date
03/28/75
07/17/75
10/30/75
Dominant
Genera
1.
2.
3.
4.
1.
2.
3.
1.
2.
Melosira
Cryptomonas
Chroomonas
Pennate Diatom
Other genera
Total
Asterionella
Tabellaria
Cryptomonas
Other genera
Total
Asterionella
Chroomonas
Other genera
Algal
Units
per ml
297
81
27
27
432
1,223
100
25
1,348
145
29
Total
174
-------
2. Chlorophyll a. -
Sampling Station Chlorophyll
Date Number (yg/1)
03/28/75 01 1.8
02 1.4
03 1.7
07/17/75 01 18.0
02 0.9
03
10/30/75 01 0.8
02 0.5
03 8.9
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10
C. Limiting Nutrient Study:
1. Autoclaved, filtered, and nutrient spiked
a. 03/28/75
Spike (mg/1)
Control
0.05 P
0.05 P + 1.0 N
1.00 N
b. 10/30/75
Ortho P
Cone, (mg/1)
0.006
0.056
0.056
0.006
Spike (mg/1)
Control
0.05 P
0.05 P + 1.0 N
1.00 N
Ortho P
Cone, (mg/1)
0.005
0.055
0.055
0.005
Inorganic N
Cone, (mg/1)
0.088
0.088
1.088
1.088
Inorganic N
Cone, (mg/1)
0.140
0.140
1.140
1.140
Maximum yield
(mg/l-dry wt.)
0.1
2.8
25.2
0.1
Maximum yield
(mg/1-dry wt.)
0.2
7.2
24.4
0.2
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11
2. Discussion -
The control yields of the assay alga, Selenastrum capri-
cornutum, indicate that the potential for primary productivity
in Mayfield Lake during both sample collection times (03/28/75,
10/30/75) was low. A significant increase in growth over that of
the control occurred when phosphorus was added alone and in com-
bination with nitrogen, indicating phosphorus limitation. Spikes
of nitrogen alone did not produce an increase in yield beyond that
of the control.
Lake data show a mean inorganic nitrogen to orthophosphorus
ratio (N/P) of 13/1, 6/1, and 28/1 in the spring, summer and fall,
respectively, suggesting nitrogen limitation in the spring and
summer, and phosphorus limitation in the fall (a mean N/P ratio
of 14/1 or greater generally reflects phosphorus limitation).
-------
12
IV. NUTRIENT LOADINGS
(See Appendix D for data)
For the determination of nutrient loadings, the Washington
National Guard collected monthly near-surface grab samples from
each of the tributary sites indicated on the map (page v), except
for the high runoff month of January when two samples were col-
lected. Sampling was begun in September 1974, and was completed
in August 1975.
Through an interagency agreement, stream flow estimates for
the year of sampling and a "normalized" or average year were
provided by the Washington District Office of the USGS for the
tributary sites nearest the lake.
In this report, nutrient loads for sampled tributaries were
determined by using a modification of a USGS computer program for
calculating stream loadings. Nutrient loads indicated for tribu-
taries are those measured minus known point source loads, if any.
Nutrient loadings for unsampled "minor tributaries and
immediate drainage" ("II" of USGS) were estimated by using the
2
mean annual nutrient loads, in kg/km /yr, in Cowlitz River at
2
Station A-2 and multiplying the means by the II area in km .
The operator of the Morton wastewater treatment plant pro-
vided monthly effluent samples and corresponding flow data.
-------
13
A. Waste Sources:
1. Known municipal -
Pop.* Mean Flow Receiving
Name Served Treatment* (m3/d x 10^) Water
Morton 1,250 Trickling 1.536 Til ton River
Filter
2. Known industrial - None
*Provided by treatment plant operator.
-------
14
B. Annual Total Phosphorus Loading - Average Year:
1. Inputs -
% of
Source kg P/yr total
a. Tributaries (nonpoint load) -
A-2 Cowl Hz River 76,340 75.5
B-l Klickitat Creek 645 0.6
D-l Til ton River 16,855 16.7
b. Minor tributaries and immediate
drainage (nonpoint load) - 6,140 6.1
c. Known municipal STP's -
Morton 935 0.9
d. Septic tanks* - 10 <0.1
e. Known industrial - None
f. Direct precipitation** - 155 0.2
Total 101,080 100.0
2. Outputs - A-l Cowlitz River 102,690
3. Net annual P export *** - 1,610
*Estimate based on 30 lakeshore residences.
**Estimated (See NES Working Paper No. 175).
***Export probably due to unknown sources and/or sampling error.
-------
15
C. Annual Total Nitrogen Loading - Average Year:
1. Inputs -
% of
Source . kg N/yr total
a. Tributaries (nonpoint load) -
A-2 Cowlitz River 1,144,155 71.7
B-l Klickitat Creek 33,600 2.1
D-l Tilton River 312,715 19.6
b. Minor tributaries and immediate
drainage (nonpoint load) - 90,425 5.7
/
c. Known municipal STP's -
Morton 4,105 0.3
d. Septic tanks* - 320 <0.1
e. Known industrial - None
f. Direct precipitation** - 9.610 0.6
Total 1,594,930 100.0
2. Outputs - A-l Cowlitz River 1,548,220
3. Net annual N accumulation - 46,710
*Estimate based on 30 lakeshore residences.
**Estimated (See NES Working Paper No. 175).
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16
D. Mean Annual Nonpoint Nutrient Export by Subdrainage Area:
2 2
Tributary kg P/km /yr kg N/km /yr
Cowlitz River 26 383
Klickitat Creek 24 1,249
Til ton River 46 856
E. Mean Nutrient Concentrations in Ungaged Streams:
Mean Total P Mean Total N
Tributary (mg/1) (rng/1)
C-l Silver Creek 0.032 0.892
E-l Winston Creek 0.038 0.750
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17
F. Yearly Loadings:
In the following table, the existing phosphorus annual loading
is compared to the relationship proposed by Vollenweider (1975).
Essentially, his "eutrophic" loading is that at which the receiving
waters would become eutrophic or remain eutrophic; his "oligotrophic"
loading is that which would result in the receiving water remaining
oligotrophic or becoming oligotrophic if morphometry permitted.
A "mesotrophic" loading would be considered one between "eutrophic"
and "oligotrophic".
Note that Vollenweider's model may not apply to lakes with
short hydraulic retention times or in which light penetration is
severely restricted by high concentrations of suspended solids
in the surface waters.
Total Yearly
Phosphorus Loading
(g/m2/yr)
Estimated loading for Mayfield Lake 11.36
Vollenweider's "eutrophic" loading 5.54
Vollenweider's "oligotrophic" loading 2.77
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18
V. LITERATURE REVIEWED
U.S. Environmental Protection Agency. 1975. National Eutrophica-
tion Survey Methods 1973-1976. Working Paper No. 175. National
Environmental Research Center, Las Vegas, Nevada, and Pacific
Northwest Environmental Research Laboratory, Corvallis, Oregon.
Vollenweider, R. A. 1975. Input-Output Models With Special
Reference to the Phosphorus Loading Concept in Limnology.
Schweiz. Z. Hydrol. 37:53-84.
Wolcott, E. E. 1965. Lakes of Washington, Volume I. Washington
Division of Water Resources, Water Supply Bulletin, 14 and 15.
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19
VI. APPENDICES
APPENDIX A
CONVERSION FACTORS
-------
CONVERSION FACTORS
Hectares x 2.471 = acres
Kilometers x 0.6214 = miles
Meters x 3.281 = feet
Cubic meters x 8.107 x 10 = acre/feet
Square kilometers x 0.3861 = square miles
Cubic meters/sec x 35.315 = cubic feet/sec
Centimeters x 0.3937 = inches
Kilograms x 2.205 = pounds
Kilograms/square kilometer x 5.711 = Ibs/square mile
-------
APPENDIX B
TRIBUTARY FLOW DATA
-------
TRIBUTARY FLOW INFORMATION FOR WASHINGTON
11/16/76
LAKE CODE 5307
MAYFIELO LAKE
TOTAL DRAINAGE AREA OF LAKE(SO KM)
TRIBUTARY AREA(SO KM)
JAN
FEB
3626.0
MAR
APR
MAY
NORMALIZED FLOWS(CMS)
JUN JUL AU6
SEP
OCT
MOV
DEC
MEAN
5307A1
5307A?
530761
530701
530777
3626.0
2988.9
26.9
365.2
245.0
307.80
213.79
1.756
47.71
18.12
?35.71
173.87
1.331
40.10
15.01
261.73
202.75
1.019
3?. 62
11.33
188.93
147.25
0.821
30.07
10.19
175.9*.
143.57
0.453
21.07
5.95
195.22
176.13
0.227
11.04
3.11
130.17
119.78
0.057
5.21
1.13
93.22
88.07
0.023
3.54
0.57
97.86
84.95
0.04?
5.58
0.99
145.41
126.29
0.170
13.99
3.11
219.03
17B.96
0.7*5
34.01
10.48
280.79
215.49
1.331
43.86
14.72
19*. 19
155.86
0.663
23.08
7. 85
TOTAL DRAINAGE AREA OF LAKE
SUM OF SUB-ORAINAfiE AREAS
MEAN MONTHLY FLOW"; AND DAILY FLOWS(CMS)
TRIBUTARY MONTH YEAH MEAN FLOW DAY
5307A1
5307A?
9
10
11
12
1
2
3
4
5
6
7
B
9
10
11
12
1
2
3
4
5
6
7
8
74
74
74
74
75
75
75
75
75
75
75
75
74
74
74
74
75
75
75
75
75
75
75
75
87.499
102.507
168.768
259.099
376.614
311.485
237.578
213.226
81.836
161.406
190.289
70.226
72.774
98.543
137.054
190.006
254.852
254.568
188.024
184.909
50.970
144.982
180.945
59.465
2?
29
4
e;
14
5
17
2?
10
21
??
29
4
q
14
5
17
22
10
21
86.650
92.596
211.810
294.495
300.158
262.780
262.780
60.315
359.624
59.182
62.439
141.584
177.547
194.537
175.281
188.590
182.360
0.0
314.317
48.988
SUMMARY
3626.0
3626.0
TOTAL FLOW IN
TOTAL FLOW OUT
2262.41
2331.83
FLOW DAY
31
FLOW DAY
FLOW
362.456
31
336.970
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TRIBUTARY FLOW INFORMATION FOR WASHINGTON
11/16/76
LAKE CODE 5307
MAYFIELD LAKE
MEAN MONTHLY FLOWS AND DAILY FLOWS(CMS)
TRIBUTARY MONTH YEAR MEAN FLOW DAY
530781
530701
53072Z
9
10
11
12
1
2
3
4
5
6
7
8
9
10
11
12
1
2
3
4
S
6
7
8
9
10
11
12
1
2
3
4
S
6
7
»
74
74
74
74
75
75
75
75
75
75
75
75
74
74
74
74
75
75
75
75
75
75
75
75
74
74
74
74
75
75
75
75
75
75
75
75
0.0
0.006
0.481
1.218
2.124
0.906
0.621
0.340
0.340
0.079
0.023
0.011
2.515
2.101
18.293
46.156
B1.269
33.980
31.149
17.330
23.956
8.665
4.417
4.191
0.368
0.283
4.531
15.857
33.980
12.176
10.760
5.239
7.9?9
2.265
0.850
0.708
??
2°
4
5
14
5
17
2?
10
21
22
29
4
5
14
5
17
2?
in
21
0.0
0.04K
0.481
1.642
1.019
0.850
0.255
0.193
0.028
0.001
2.209
3.681
12.459
58.050
59.465
40.776
13.309
16.311
4.786
2.973
FLO" DAY
31
FLOW DAY
1.048
FLOW
31
36.533
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APPENDIX C
PHYSICAL AND CHEMICAL DATA
-------
.5 , k> •< C. . J\ _ . * . _ I i I ^ -ill... i
NATL EUTROPHICATION SURVEY
EPA-LAS VEGAS
530701
46 30 15.0 122 34 50.0 3
MAYFIELD LAKE
53041 WASHINGTON
131P9?
DEPTH
'111202
CLASS 00
DATF. TIME DEPTH »
FPOu OF
TO DAV FEET
75/03/28 14
14
14
14
14
14
14
75/07/17 13
13
13
13
13
13
7S/10/30 09
09
09
09
09
09
09
55
55
55
55
55
55
55
15
15
15
15
15
15
20
20
20
20
20
20
20
0000
0005
0020
0060
0100
013*
0170
0000
0005
0015
004P
0090
0147
0000
0005
0020
0055
0090
0130
017=;
oomn
(ATE°
TfMP
CENT
5.8
5.5
5.5
5.4
5.4
5.4
5.4
13.6
13.7
7.6
7.3
7.1
4.8
12.1
12.1
12.1
1KB
1 1.0
10.1
9.9
00300 00077 00094
DO TRANSP CNDUCTVY
SECCHI FIELD
MG/L
11.
12.
12.
12.
12.
12.
12.
7,
10.
10,
10.
9.
9.
9.
9.
9.
10.
10.
7.
4,
TNCHES MICROMHO
,8 74
,2
,0
,2
,0
.0
.0
.0 96
,4
,2
.2
1^
,8
,8 108
,8
,8
.0
,0
.0
.4
29
31
32
32
32
30
32
6
27
28
29
31
29
17
16
16
17
16
22
25
00400 00410
PH T ALK
CAC03
SU
7.20
7.25
7.25
7.30
7.30
7.30
7.30
9.40
3.20
9.30
9.20
7.60
7.30
6.80
6.85
6.85
6.90
6. HO
6.70
6.60
MG/L
16
13
23
23
23
20
17
26
25
25
24
25
25
26
24
25
26
23
31
36
00610 00635 006^0 00671
NH3-N TOT KJEL KJ02K.N03 PHOS-DIS
TOTAL N N-TOTAL OPTHQ
MG/L
0.030
0.030
0.020
0.030
0.020
O.OPOK
0.020*
0.060
0.030
O.OPO
0.020
0.030
0.020
0.020
0.020K
0.020K
0.020K
0.020K
0.020K
0.020K
MG/L
0.500
0.300
0.200
0.300
0.200
0.200
0.200
0.500
0.200
0.200K
0.200K
0.200K
0.200K
0.200K
0.200K
0.200K
0.200K
0.200K
0.200*
0.200*
MG/L
0.120
0.120
0.110
0.120
0.130
0.130
0.120
0.030
0.020K
0.040
0.050
0.050
0.090
0.050
0.040
0.050
0.080
0.300
0.110
0.100
MG/L P
0.009
0.006
0.005
0.009
0.006
0.005
0.005
0.014J
0.010K
0.013K
0.010K
0.013K
0.01?
0.005
0.007
0.005
0.00.1
0.00?
0.00?
0.00?"
DaTE
TO
75/03/28
75/07/17
75/10/30
00665 32217 00031
TIME DEPTW PHOS-TOT CMLPPHYL IMCDT LT
OF A PFMNING
DAY FEET
14
14
14
14
14
14
14
13
13
13
13
13
13
09
09
09
09
09
09
09
55
55
55
55
55
55
55
15
15
15
15
15
15
20
20
20
20
20
20
20,
0000
0005
002"
0060
0100
0135
0170
0000
000*
0015
004(1
0090
0147
0000
0005
0020
005*
0090
0130
0175
MG/L
0.
0.
n.
0.
0.
0.
0.
p.
0.
0.
0.
0.
0.
o.
0.
0.
0.
0.
0.
0.
p
020
014
014
016
013
015
015
014
009
009
OOP
008
053
020
01?
013
013
019
010
015
UG/L PFRCENT
1.8
18.0
0.8
K VALUE KNOWN TO BE LESS
THAN INDICATED
J VALUE KNOWN TO BE ESTIMATED
-------
STORE! RETRIEVAL DATE 76/11/16
NATL EUTOOPHICATION SURVEY
EPA-LAS VEGAS
DflTF
TO
75/03/28
75/07/17
75/10/30
00010
TI«E DEPTH WATER
OF TFMP
DAY FEET
15
15
15
15
15
15
14
14
14
14
14
14
09
09
09
09
09
15
15
15
15
15
15
on
00
00
00
00
00
40
40
40
40
40
0000
0005
002*.
0050
007=;
0101
0000
0005
0015
0025
0050
0091
0000
0005
0020
0050
0083
CENT
6
6
6
6
6
6
11
7
7
7
7
7
12
12
12
11
10
.9
.7
.6
.2
.0
.0
.9
.9
.7
.4
.4
.2
.2
.2
.2
.2
.7
00300
DO
MG/L
12
12
12
11
12
11
10
11
11
10
9
10
9
9
10
11
11
.2
.2
.?
.8
.0
.8
.6
.2
.0
.2
.8
.6
.8
.8
.0
.0
.2
00077 00094
TRANSP CNOUC
SECCHI FIELD
INCHES MICRO
84
96
530702
46 33 32,0 122 32 01.0 3
MAYFIELD LAKE
53041 WASHINGTON
131292
11EPALES P111202
0108 FEET DEPTH CLASS 00
4
VY
HO
46
44
45
45
46
46
41
34
31
31
12
32
18
15
14
13
9
00400
PH
SIJ
7.50
7.40
7.40
7.40
7.30
7.30
8.70
8.10
7.65
7.60
7.90
7.40
6.80
6.90
6.90
6.90
6.90
00410
T ALK
CAC03
MG/L
25
24
25
25
25
21
28
25
25
25
28
25
24
26
25
20
20
00610
NH3-N
TOTAL
MG/L
0.030
0.020
0.020K
0.020
0.020
0.030
0.030
0.030
0.020K
0.020
0.020
0.020
0.020K
0.020K
0.020K
0.020K
0.020K
00625
TOT KJEL
N
MG/L
0.200K
0.200K
0.200K
0.200K
0.200*
0.200K
0.400
0.200
0.200K
0.200*
0.200K
0.200K
0.200K
0.200K
0.200K
0.200K
0.200K
006^0
NO?f.N03
N-TOTAL
MG/L
0.170
0.160
0.120
0.120
0.200
0.190
0.020
0.030
0.030
0.050
0.050
0.050
O.OAO
0.060
0.050
0.150
0.200
00671
PHOS-OIS
ORTHO
MG/L P
0.022K
0.016K
0.015K
0.013J
0.014J
0.009
0.012J
0.011J
0.011K
0.015K
0.005
0.011
0.003
0.006
0.005
0.005
0.005
D4TE
TO
75/03/28
75/07/17
75/in/30
TIME DEPTH PHOS-TOT
OF
D.4Y FF.ET
15
15
15
15
15
15
14
14
14
14
14
14
09
09
09
09
09
15
15
15
15
15
15
00
on
00
on
00
on
40
40
40
40
40
0000
noo5
0025
0050
0075
010!
ooon
0005
0015
0025
0050
00*1
ooon
0005
00?0
0050
0083
MG/L P
0.019
0.015
0.014
0.015
0.018
O.OR6
o.o?o
0.012
0.010
0.010
0.029
o.ni P
0.013
0.013
0.014
0.059
0.060
32217 00031
-IL9PHYL IMCDT 1.1
UG/L DESCENT
1.4
0.9
0.5
K VALUE KNOWN TO BE LESS
THAN INDICATED
0 VALUE KNOWN TO BE ESTIMATED
-------
STORET RETRIEVAL DATE 76/11/16
NATL FUTROPHICATION SURVEY
EPA-LAS VEGAS
530703
46 32 40.0 122 31 30.0 3
MAVFIELO LAKE
53041 WASHINGTON
OATF TI*E DEPTi-
OF
DAY
TO
FEET
onnio
WATER
TF.MP
CENT
00300
00
MG/L.
76/03/2*
75/07/17
75/10/30
15
15
15
15
15
13
13
13
13
13
10
10
10
10
44
44
44
44
44
40
40
40
40
40
00
00
on
00
0000
0005
0015
0035
0059
0000
0005
0021
0040
0056
000"
0005
002"
0053
5.4
5.3
5.3
5.2
5.2
6.9
6.S
6.8
6.7
6. a
12.6
12.7
12.6
12.5
12.0
11.8
11.8
11.8
11.8
10.0
10.4
10.4
10.4
10.4
9.4
9.2
9.0
9.4
00077 00094
TPANSP CNOUC
SECCHI FIELD
INCHES MICRO
132
96
760109 2111202
0063 FEET OEPTH CLASS 00
14
VY
IHO
32
33
33
32
32
27
24
30
30
33
15
16
15
16
00400
PH
Sit
7.30
7.30
7.30
7.30
7.35
7.40
7.10
7.30
7.25
7.20
6.70
6.70
6.80
6.80
00410
T ALK
CAC03
MG/L
22
23
23
23
23
22
21
22
21
25
26
26
23
23
00610
NH3-N
TOTAL
MG/L
0.020K
0.020K
0.020K
0.020K
0.020K
0.020K
0.020
0.020
0.020K
0.020
0.020K
0.020K
0.020K
0.0?OK
00625
TOT KJEL
N
MG/L
0.300
0.200
0.200
0.200
0.200
0.700
0.200K
0.200K
0.200K
0.200*
0.200K
0.200K
0.200
0.200K
00630
NO?kN03
N-TOTAL
MG/L
0.090
0.090
O.OflO
0.080
0.080
0.060
0.060
0.060
0.060
0.050
0.050
0.050
0.050
0.120
00671
PHOS-DIS
OPTHO
MG/L P
0.007
0.005
0.013K
0.015K
0.014K
0.007
0.006
0.02?K
0.007
0.013K
0.005
o.oos
0.00*
0.004
00665
DATE TIME DEPTH PHOS-TOT
FROM OF
TO flAY FEET MG/L P
75/03/28 15 44 0000 0.015
15 44 0005 0.014
15 44 0015 0.013
15 44 0035 0.012
15 44 0059 0.01?
75/07/17 13 40 onnn o.oi4
13 40 0005 0.009
13 40 0021 0.009
13 40 0040 0.009
13 40 0056 O.Q11
75/10/30 10 00 000" O.n?i
10 00 0005 0.01)
10 oo oo?n o.oi?
10 00 0053 0.014
32217
CHLRPHYL
A
UG/L
1.7
00031
INCDT LT
RFMNING
PERCENT
K VALUE KNOWN TO BE LESS
THAN INDICATED
-------
APPENDIX D
TRIBUTARY AND WASTEWATER
TREATMENT PLANT DATA
-------
STORET RETRIEVAL DATE 7C./11/16
N«TL FUTROPHICATION SURVEY
EPA- LAS VEGAS
DATE TIME DEPTH N02&N03
FROM OF
TO DAY FEET
74/09/22
74/10/29
74/12/04
75/01/05
75/01/31
75/02/14
75/03/05
75/04/17
75/05/22
75/07/10
75/08/21
09
16
16
12
15
12
10
16
15
13
14
50
55
15
40
10
55
15
50
25
50
30
5307A1
46 30 40.0 122 27 00.0 4
COfcLITZ RIVER
53 15 ONALASKA
0/MAYFIELO LAKE
ONK «00 FT E END SEC RD 2 M S HKY
11EPALES 2111204
0000 FEET DEPTH CLASS 00
5 JCT
0630
&N03
OTAL
G/L
0.01?
0.07?
0.128
0.1?1
0.120
0.129
O.OS5
0.020
0.040
0.035
00625
TOT KJEL
N
MG/L
0.200
0.100K
0.700
0.100
0.100
0.100K
0.250
0.150
0.050K
0.050K
0.150
00610
NH3-N
TOTAL
MG/L
0.010
0.020
0.025
0.016
0.008K
0.016
0.024
0.020
0.010
0.005
0.005K
00671
PHOS-DIS
ORTHO
MG/L f
0.005K
0.010
0.005K
0.010
0.008K
0.008
0.008
0.005
0.007
0.005K
0.005K
00665
PHOS-TOT
MG/L f
0.010
0.015
0.060
0.020
0.010
0.020
0.020
0.010K
0.010K
0.010K
0.010K
K VALUE KNOWN TO BE LESS
THAN INDICATED
-------
STORET RETRIEVAL DATE 76/11/16
NATL EUTROPHICATION SURVEY
EPA- LAS VEGAS
5307A2
46 3? 06.0 182 25 20.0 4
COKfLITZ RIVER
53 15 MORTON
T/MAYFIELO LAKE 13in<»3
BELOW MOSSYP.OCK DAM 3 MI E OF MOSSTROCK
11EPALES 2111204
0000 FEET DEPTH CLASS 00
DATE
FPOM
TO
74/09/22
74/10/29
74/12/04
75/01/05
75/01/31
75/02/14
75/03/05
75/04/17
75/05/22
75/07/10
75/08/21
TIME
OF
OAY
12 30
16 00
11 50
14 30
14 00
12 00
11 10
15 20
14 00
12 25
15 35
FEET
00630
N02&N03
N-TOTAL
MG/L
0.040
0.400
0.022
0.048
0.072
0.072
0.072
0.050
0.045
0.050
0.045
00625
TOT KJEL
N
MG/L
0.100K
0.100*
0.500
0.100K
0.100K
0.200
0.100K
0.200
0.050K
0.050K
0.050
00610
NH3-N
TOTAL
MG/L
0.005
0.050
0.010
0.016
0.008K
0.016
0.016
0.020
0.010
0.005K
0.005K
00671
PHOS-DIS
OPTHO
MG/L P
0.005K
0.005
0.005K
0.005
0.006K
0.008
0.008
0.005K
0.005
0.005K
0.007
00665
DHOS-TOT
MG/L »>
0.010
0.010
0.030
0.040
0.010
0.010
0.010K
0.010K
0.010K
0.020
0.010
K VALUE KNOWN TO BE LESS
THAN INDICATED
-------
STORET RETRIEVAL DATE 7
-------
STORET RETRIEVAL DATE 76/11/16
NATL EUTROPHICATIOM
EPA- LAS VEGAS
DATE
FRO*
TO
TIME DEPTH
OF
DAY FEET
74/09/22 10 30
74/10/29 15 30
74/12/04 14 30
75/01/05 13 05
75/01/31 13 10
75/02/14 11 30
75/03/05 11 35
75/04/17 14 50
75/05/22 13 25
5307C1
46 32 OC.O 122 34 35.0 4
SILVER CREEK
53 is ONALASKA
T/MAYFIELD LAKfc 1.1129?
SEC «0 8KDG 1 MI NE OF TOWN OF SILVER CK
11EPALES 2111204
0000 FEET DEPTH CLASS 00
0630
f>N03
OTAL
G/L
0.012
0.104
0.336
0.900
1.010
0.840
0.820
0.375
0.180
00625
TOT KJEL
N
M6/L
0.4QO
0.300
1.100
0.300
O.?00
0.400
0.200
0.400
0.150
00610
NH3-N
TOTAL
MG/L
0.060
0.020
0.020
0.016
0.024
0.024
0.018K
0.025
0.025
00671
PHOS-DIS
ORTHO
MG/L P
0.015
0.020
0.015
0.010
o.ooe
0.008
0.016
0.010
0.020
00665
PHOS-TOT
MG/L P
0.060
0.040
0.030
0.020
0.010
0.060
0.020
0.020
0.030
K VALUE KNOWN TO BE LESS
THAN INDICATED
-------
STORET RETRIEVAL DATE 76/11/16
NATL EUTROPHICATION SURVEY
EPA- LAS VEGAS
DATE TIME DEPTH N02&N03
FROM OF
TO DAY FEET
74/09/2?
74/10/29
74/12/04
75/01/05
75/01/31
75/02/14
75/03/05
75/04/17
75/05/22
75/07/10
75/08/21
11
14
14
13
12
10
11
14
12
11
16
20
40
00
35
40
45
55
15
45
30
20
5307D1
46 35 04.0 122 30 10.0 4
TILTON RIVER
53 15 ONALASKA
T/MAYFIELP LA
-------
STORET RETRIEVAL DATE 76/11/16
MATL EUTROPHICATION SURVEY
EPA- LAS VEGAS
DATE TIME DEPTH N02&.N03
FPOM OF
TO PAY FEET
74/09/2R
74/10/29
74/13/04
75/01/05
75/01/31
75/02/14
75/03/05
75/04/17
75/05/22
75/07/10
75/08/21
13
16
15
15
14
12
10
16
14
13
15
10
30
40
00
40
35
40
15
45
15
00
5307E1
46 33 30.0 122 30 10.0 4
WINSTON CREEK
53 LEWIS CO HWY MAP
T/MAYFIELD LAKE 13129?
MED DTY WO 8ROG 6 *I «SW OF MQSSYROCK
11EPALES ?111204
0000 FEET DEPTH CLASS 00
0630
&.N03
OTAL
G/L
0.03S
0.384
0.384
O.BOO
0.720
o.^^o
0.600
0.300
0.160
0.095
0.060
00625
TOT KJEL
N
MG/L
0.100
0.300
1.100
0.600
0.200
0.300
0.100
0.150
0.350
0.200
0061P
NH3-N
TOTAL
MG/L
0.010
0.200
0.005
0.048
0.008K
0.0?4
0.008K
0.015
0.015
0.025
0.005K
00671
PHOS-OIS
ORTHO
MG/L P
0.005K
0.020
0.005K
0.020
0.008K
0.008K
0.008
0.005K
0.005K
0.005
0.010
00665
PHOS-TOT
MG/L P
0.015
0.020
0.170
0.030
0.010
0.030
0.020
0.010K
0.010K
0.020
0.030
K VALUE KNOWN TO BE LESS
THAN INDICATED
-------
STORET RETRIEVAL DATE 76/11/16
NATL EUTROPHICATION SURVEY
F.PA- LAS VEGAS
5307DA TF5307DA P001250
46 33 37.0 122 17 08.0 *
MORTON
$3 is MORTON
T/MflYFIELO LAKE 131093
TILTON RIVER TO MAYFIELO LAKF
HEPALES 314120*
oooo FEET DEPTH CLASS oo
DATE
TO
74/12/11
75/01/13
75/02/13
75/03/17
75/04/10
75/05/1?
75/06/11
75/07/11
75/08/12
75/09/11
75/10/14
75/11/11
75/12/08
00630
TIME DEPTH N02S.N03
OF N-TOTAL
DAY FEET
09
09
11
09
09
09
09
09
09
10
09
09
30
30
00
00
30
00
00
00
30
30
30
00
MG/L
3
3
1
2
1
3
8
6
9
5
6
3
2
.200
.040
.880
.080
.200
.100
.400
.600
.200
.400
.500
.700
.400
006?5
TOT KJEL
N
MG/L
3.350
l.OOOK
2.380
4.500
5.900
7.100
6.600
3.800
11.000
6.400
14.000
4.200
3.900
00610 00671 00665
NH3-N PHOS-OIS PHOS-TOT
TOTAL ORTHO
MG/L
1.3PO
0.100
0.840
2.800
0.160
2.500
3.550
3.800
6.000
4.100
6.500
1.150
0.325
MG/L P
0
0
0
1
0
1
3
3
4
2
4
0
0
.735
.420
.760
.600
.540
.650
.900
.100
.100
.400
.000
.880
.430
50051 50053
FLOW CONDUIT
RATE FLOW-MGD
MG/L P INST MGO MONTHLY
1.500
0.530
1.100
2.200
1.900
2.100
4.800
3.890
4.900
2.700
5.100
1.600
0.720
0.472
0.740
0.969
0.345
0.230
0.218
0.170
0.110
0.120
0.132
0.162
0.440
0.750
0.320
0.650
0.550
0.363
0.240
0.260
0.190
0.125
0.126
0.132
0.145
0.375
1.800
-------
STOSET RETRIEVAL DATE 7f/ll/l6
N#TL EUTPOPHICATIQf-1 SURVEY
EPA- LAS VEGAS
OSTE TIME OEPTH NO?K.N03
F30M OF
TO DAY FEET
74/12/11
75/01/13
75/03/13
75/03/17
75/04/10
75/05/13
75/06/11
75/07/11
75/08/12
75/09/11
75/10/14
75/11/11
75/12/08
09 30
11
30
00
09 00
09 30
09 00
09 00
09 00
09 30
10 30
09 30
09 00
5307DA TF5307DA P001250
*6 33 37.0 1?2 17 08.0 4
MORTON
53 15 MORTON
T/MAVFIELO LAKE 1310Q3
TILTON RIVEH TO MAYFIELD LAKE
11EPALES 2141304
0000 FEET DEPTH CLASS 00
0630
K.N03
OTAL
G/L
3.200
3.040
1.880
2.080
1.200
3.100
8.400
6.600
9.200
5.400
6.500
3.700
2.400
00625
TOT KJEL
N
MG/L
3.350
l.OOOK
2.380
4.500
5.900
7.100
6.600
3.800
11.000
6.400
14.000
4.200
3.900
00610
NH3-N
TOTAL
MG/L
1.3^0
0.100
0.840
2.800
0.160
2.500
3.550
3.800
6.000
4.100
6.500
1.150
0.325
00671
PHOS-DIS
ORTHO
MG/L P
0.735
0.420
0.760
1.600
0.540
1.6*0
3.900
3.100
4.100
2.400
4.000
0.880
0.430
00665
PHOS-TOT
MG/L P
1.500
0.530
1.100
2.200
1.900
2.100
4.800
3.890
4.900
2.700
5.100
1.600
0.720
50051
FLOW
RATE
INST MGD
0.472
0.740
0.969
0.345
0.230
0.218
0.170
0.110
0.120
0.132
0.162
0.440
0.750
50053
CONDUIT
FLOW-MGD
MONTHLY
0.320
0.650
0.550
0.363
0.240
0.260
0.190
0.125
0.126
0.132
0.145
0.375
1.800
-------
APPENDIX E
PARAMETRIC RANKINGS OF LAKES
SAMPLED BY NES IN 1975
STATE OF WASHINGTON
Mean or median values for six of the key parameters evaluated
in establishing the trophic conditions of Washington lakes sampled
are presented to allow direct comparison of the ranking, by parameter,
of each lake relative to the others. Median total phosphorus, median
inorganic nitrogen and median dissolved orthophosphorus levels are
expressed in mg/1. Chlorophyll a_ values are expressed in yg/1.
To maintain consistent rank order with the preceding parameters,
the mean Secchi disc depth, in inches, is subtracted from 500.
Similarly, minimum dissolved oxygen values are subtracted from 15
to create table entries.
-------
LAKE DATA TO BE USED IN RANKINGS
LAKE
CODE LAKE NAME
5301 AMEPICAN LAKE
5302 BANKS LAKE
5303 CHELAN LAKE
5304 DIAMOND LAKE
5305 GREEN LAKE
5306 KEECHELUS LAKE
5307 MAYFIELD LAKE
5308 MEDICAL LAKE
5309 MOSES LAKF
5310 07ETTE LAKE
5311 SAMMAMISH LAKE
5312 WHATCOM LAKE
5313 LOWER GRANITE RESERVOIR
MEDIAN
TOTAL P
0
0
0
0
0
0
0
0
0
0
0
0
0
.027
.021
.005
.014
.027
.007
.014
.275
.115
.010
.015
.009
.033 .
MEDIAN
INORG N
0
0
0
0
0
0
0
.105
.040
.070
.060
.050
.040
.100
0.225
0
0
0
0
0
.150
.110
.210
.320
.150
500-
MEAN SEC
343
364
111
303
415
280
402
401
463
403
374
288
435
.000
.533
.900
.667
.000
.250
.000
.714
.600
.333
.000
.000
.500
MEAN
CHLORA
4
7
0
14
2
1
4
16
29
1
7
3
'4
.822
.373
.905
.537
.983
.400
.250
.425
.060
.225
.290
.422
.875
15-
MIN DO
15
10
6
14
10
9
10
15
14
7
14
10
7
.000
.800
.400
.200
.600
.200
.600
.000
.600
.200
.600
.HOO
.200
OISS
0
0
0
0
0
0
0
0
. 0
0
0
0
0
MEDIA
ORTH
.007
.007
.003
.010
.009
.002
.007
.1*6
.038
.009
.006
.009
.022
-------
PERCENT OF LAKES WITH HIGHER VALUES (NUMBER OF LAKES WITH HIGHER VALUES)
LAKE
CODE LAKE NAME
5301 AMERICAN LAKE
5302 BANKS LAKE
5303 CHELAN LAKE
530* DIAMOND LAKE
5305 GRFFN LAKE
5306 KEECHELUS LAKE
5307 MAYFIELD LAKE
5308 MEDICAL LAKE
5309 MOSES LAKE
5310 07ETTE LAKE
5311 SAMMAMISH LAKE
5312 WHATCOM LAKE
5313 LOWER GRANITE RESERVOIR
MEOIAN
TOTAL P
29 (
42 1
100 (
6? 1
29 I
9? I
62 1
0 I
8 1
75 i
50
83
17
3)
i 5)
! 12)
I 7)
: 3)
: in
[ 7)
I 0)
; i)
( 9)
( 6)
( 10)
( 2)
MEDIAN
INORG N
. 50 (
100 <
67 I
75 (
83 (
92 (
58 (
8 (
29 <
42 (
• 17 (
0 (
29 (
6)
12)
8)
9)
10)
11)
7)
1)
3)
5)
2)
0)
3)
500-
MEAN SEC
67 1
58 <
100 1
75 1
17 I
92 1
33 1
42 I
0 1
25 «
50
83
8
: 8)
1 7)
: 12)
! 9)
I 2)
I 11)
[ 4)
t 5)
[ 0)
( 3)
< 6)
( 10)
( 1)
MEAN
CHLORA
50 (
25 (
100 (
17 (
75 1
83 1
58 1
8 1
0 1
92 '
33
67 i
42
6)
: 3)
: 12)
: 2)
[ 9)
: 10)
[ 7)
i i)
t 0)
I 11)
( 4)
( 8)
( 5)
15-
MIN DO
4 (
46 (
100 1
33 1
62 1
75 (
62 1
4 1
21 1
87 i
21
46
87
: 4 o)
! 5)
! 12)
: 4)
! 7)
[ 9)
; 7)
I 0)
! 2)
r 10)
( 2)
( 5)
( 10)
MEDIAN
DISS ORTMO
58 (
71 i
92 1
25 1
46 1
100 1
71 1
0 I
8 1
33 i
B3
46
17
! 7)
; *>
: in
! 3)
1 S)
: i?)
: P)
: o)
i i)
t 4)
( I'M
( 5)
( ?)
------- |