U.S. ENVIRONMENTAL PROTECTION AGENCY
NATIONAL EUTROPHICATION SURVEY
WORKING PAPER SERIES
REPORT
ON
PORCUPINE RESERVOIR
CACHE COUNTY
UTAH
EPA REGION VIII
WORKING PAPER No, 855
CORVALLIS ENVIRONMENTAL RESEARCH LABORATORY - CORVALLIS, OREGON
and
ENVIRONMENTAL MONITORING & SUPPORT LABORATORY - LAS VEGAS, NEVADA
-------
REPORT
ON
PORCUPINE RESERVOIR
CACHE COUNTY
UTAH
EPA REGION VIII
WORKING PAPER No, 855
WITH THE COOPERATION OF THE
UTAH STATE DIVISION OF HEALTH
AND THE
UTAH NATIONAL GUARD
SEPTEMBER, 1977
-------
CONTENTS
Page
Foreward ii
List of Utah Study Lakes and Reservoirs iv
Lake and Drainage Area Map v
Sections
I. Introduction 1
II. Conclusions 1
III. Reservoir and Drainage Basin Characteristics 3
IV. Water Quality Summary 4
V. Literature Reviewed 8
VI. Appendices 9
-------
11
FOREWORD
The National Eutrophication Survey was initiated in 1972 in
response to an Administration commitment to investigate the nation-
wide threat of accelerated eutrophication to freshwater lakes and
reservoirs.
OBJECTIVES
The Survey was designed to develops in conjunction with state
environmental agencies, information on nutrient sources, concentrations,
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 non-point
source pollution abatement in lake watersheds.
ANALYTIC APPROACH
The mathematical and statistical procedures selected for the
Survey's eutrophication 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 eutrophication control can be made.
LAKE ANALYSIS
In this report, the first stage of evaluation of lake and water-
shed data collected from the study lake and its drainage basin is
documented. The report is formatted to provide state environmental
agencies with specific information for basin planning [§303(e)]s water
quality criteria/standards review [§303(c)], clean lakes [§314(a,b)]9
and water quality monitoring [§106 and §305(b)] activities mandated
by the Federal Water Pollution Control Act Amendments of 1972.
-------
Beyond the single lake analysis, broader based correlations
between nutrient concentrations (and loading) and trophic condi-
tion are being made to advance the rationale and data base for
refinement of nutrient water quality criteria for the Nation's
fresh water 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 EPA
and to augment plans implementation by the states."
ACKNOWLEDGEMENT
The staff of the National Eutrophication Survey (Office of
Research and Development, U.S. Environmental Protection Agency)
expresses sincere appreciation to the Utah Department of Social
Services and the Utah Department of Natural Resources for pro-
fessional involvement, to the Utah National Guard for conducting
the tributary sampling phase of the Survey, and to those Utah
wastewater treatment plant operators who voluntarily provided
effluent samples and flow data.
The staffs of the Bureau of Water Quality of the Division
of Health and the Division of Wildlife Resources provided inval-
uable 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 Maurice L. Watts, the Adjutant General of Utah,
and Project Officer Lt. Colonel T. Ray Kingston, who directed, the
volunteer efforts of the Utah National Guardsmen, are also grate-
fully acknowledged for their assistance to the Survey.
-------
iv
NATIONAL EUTROPHICATION SURVEY
STUDY LAKES AND RESERVOIRS
STATE OF UTAH
NAME
Bear
Deer Creek
Echo
Fish
Flaming Gorge
Huntington
Joes Valley
Lower Bowns
Lynn
Minersville
Moon
Navajo
Newcastle
Otter Creek
Panguich
Pelican
Pineview
Piute
Porcupine
Powel 1
Pruess
Sevier Bridge
Starvation
Steinaker
Tropic
Utah
Willard Bay
COUNTY
Rich, UT; Bear Lake, ID
Wasatch
Summi t
Sevier
Daggett, UT;
Sweetwater, WY
Emery
Emery
Garfield
Box Elder
Beaver
Duchesne
Kane
Iron
Piute
Garfield
Uintah
Weber
.Ptute
Cache
Garfteld, Kane, San
Juan, UT; Coconino, AZ
Mi Hard
Juab, Sanpete
Duchesne
Uintah
Garfield
Utah
Box Elder
-------
413130
East Fork
Little Bear
River
°m
xot
VI
Utah
Map Location /
•4f3l'(W"
111°44:00"
PORCUPINE RESERVOIR
X Lake Sampling Site
iKm.
Scale
Mi
111043J30"
111
\
-------
PORCUPINE RESERVOIR
STORE! NO. 4918
I. INTRODUCTION
Porcupine Reservoir was included in the National Eutrophication
Survey as a water body of interest to the Utah Bureau of Environmental
Health. Tributaries were not sampled, and this report relates only to
lake sampling data.
II. CONCLUSIONS
A. Trophic Condition:
Survey data indicate that Porcupine Reservoir is eutrophiCo
It ranked seventeenth in overall trophic quality among the 27
Utah lakes and reservoirs sampled in 1975 when compared using a
combination of six water quality parameters*. Eleven of the water
bodies had less median total phosphorus, 21 had less median dis-
solved orthophosphorus, 16 had less median inorganic nitrogen,
16 had less mean chlorophyll £, and 18 had greater mean Secchi disc
transparency. Depression of dissolved oxygen with depth occurred
in August at stations 1 and 2 (to 2.6 mg/1 at 33.8 meters).
Survey limnologists noted considerable amounts of suspended
sediments in May when Secchi disc depths ranged from 0.6 to £L8
meters.
Station 2 could not be sampled in September because the
had been drawn down an estimated 12 meters.
B. Rate-Limiting Nutrient:
The algal assay results indicate Porcupine Reservoir was
limited by phosphorus at the time the sample was collected (05/
* See Appendix A.
-------
2
14/75). The reservoir data indicate phosphorus limitation in
September as well but nitrogen limitation in August.
-------
III. RESERVOIR AND DRAINAGE BASIN CHARACTERISTICS1"
A. Morphemetry :
1. Surface area: 0.77 kilometers2.
2. Mean depth: 20.1 meters.
3. Maximum depth: 42.4 meters.
4. Volume: 15.419 x 106 m3.
B. Precipitation*:
1. Year of sampling: 49.4 centimeters.
2. Mean annual: 44.7 centimeters.
t Table of metric conversions—Appendix B.
tt Sudweeks, 1975; maximum depth from Ikner (1975).
* See Working Paper No. 175, "...Survey Methods 1973-1976'
-------
4
IV. WATER QUALITY SUMMARY
Porcupine Reservoir 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 a number of depths at two stations in May and August and one
station in September (see map, page v). During each visit, a single
depth-integrated (4.6 m to surface) sample was composited from the
stations for phytoplankton identification and enumeration; and during
the first visit, a single 18.9-liter depth-integrated sample was
composited for algal assays. Also each time, a depth-integrated sample
was collected from each of the stations for chlorophyll ^analysis.
The maximum depths sampled were 39.6 meters at station 1 and 21.3
meters at station 2. Station 2 was dry in September due to reservoir
drawdown.
The sampling results are presented in full in Appendix C and
are summarized in the following table.
-------
A.
1ST SAMPLING ( 5/14/75)
2 SITES
PARAMETER
TEMP (C)
OISS OXY (MG/Lt
CNDCTVY
-------
B. Biological Characteristics:
1. Phytoplankton -
Sampling
Date
05/14/75
08/06/75
09/23/75
Dominant
Genera
1.
2.
3.
1.
2.
3.
4.
5.
1.
2.
3.
4.
5.
Chroomonas s£.
DinobryorTsp.
Cryptomonas sp.
Total
Dinobryon sp.
Cyclotella sp.
Cryptomonas sp.
Oocystis sp.
Perldinlum sp_.
Other genera
Total
Cyclotella sp.
Melosira sp.
Dinobryon sp.
Asterionella sp.
Cryptomonas sp.
Otner genera
Algal Units
per ml
3,196
761
203
4,160
1,147
688
191
76
38
40
2,180
887
242
202
161
121
121
2. Chlorophyll a_ -
Total
1,734
Sampling
Date
05/14/75
08/06/75
09/23/75
Station
Number
1
2
1
2
1
2
Chlorophyll a
(yg/1 )
5.3
12.2
8.5
6.5
6.8
-------
0.015
0.065
0.065
0.015
0.195
0.195
1.195
1.195
2.0
9.2
23.3
2.8
7
C. Limiting Nutrient Study:
1. Autoclaved, filtered, and nutrient spiked -
Ortho P Inorganic N Maximum yield
Spike (mg/1) Cone, (mg/1) Cone, (mg/1) (mg/1-dry wt.)
Control
0.050 P
0.050 P + 1.0 N
1.0 N
2. Discussion -
The control yield of the assay alga, Selenastrum capri-
cornutum, indicates that the potential primary productivity
of Porcupine Reservoir was moderately high at the time the
sample was collected (05/14/75). Also, the significant
increase in yield with the addition of phosphorus alone
indicates the reservoir was phosphorus limited at that time.
Note that the addition of nitrogen alone resulted 1n a yield
not significantly greater than that of the control.
The reservoir data indicate phosphorus limitation in May
and September but nitrogen limitation in August. The mean
inorganic nitrogen/orthophosphorus ratios were 14/1 in May,
29/1 in September, and 10/1 in August. Nitrogen limitation
would be expected when N/P ratios are less than 14/1.
-------
8
V. LITERATURE REVIEWED
Ikner, James, 1975. Personal communication (maximum depth). U.S.
Geol. Surv., Salt Lake City.
Sudweeks, Calvin K., 1975. Personal communication (reservoir
morphometry). UT Bur. of Env. Health, Salt Lake City.
-------
VI. APPENDICES
APPENDIX A
LAKE RANKINGS
-------
CODE
&<.OH
4901
4902
4903
4904
LA«E UATA TO BE USED I* RANKINGS
LAKE MAKE
LAKE POWELL
BEAK LAKE
LOWER SOWN'S RESERVOIR
OEER CREEK RESERVOIR
ECHO RESERVOIR
LYNN RESERVOIR
FISH LAKE
HUNTINGTON NORTH RESERVO
JOE'S VALLEY RESERVOIR
MINERSVILLE RESERVOIR
MOON LAKE
NAVAJO LAKE
NEWCASTLE RESERVOIR
OTTER CREEK RESERVOIR
PAN9UITCH LAKE
PELICAN LAKE
PINEVIEW RESERVOIR
PIOTE RESERVOIR
PORCUPINE RESERVOIR
PRUESS RESERVOIR (GARRIS
SEVIER BRIDGE RESERVOIR
STARVATION RESERVOIR
STEINAKER RESERVOIR
TROPIC RESERVOIR
UTAH LAKE
KlLLftRO 8A.f RESERVOIR
KLAHSNS GORGE
4906
4907
4908
4909
4910
4911
491*
4913
4914
49 IS
4916
4917
4918
4919
4930
4921
4922
4923
4924
4925
56^5
MEDIAN
TOTAL P
0.010
0.011
0.031
0.038
0.047
0.121
0.023
0.013
0.012
0.192
0.008
0.016
0.051
0.067
0.071
0.044
0.028
0.047
0.025
0.057
0.026
0.016
0.011
C.021
8® 132
CoC4«
MEDIAN
INORG N
0.410
0.040
0.040
0.215
0.170
0.200
0.040
0.040
0.045
0.060
0.040
0.040
0.040
0.040
0.040
0.050
0.300
0.150
0.110
0.140
0.355
0.040
0.040
0.050
0.320
8«860
500-
KEAN SEC
339.030
253.167
336.000
430.333
450.333
417.667
152.000
392.000
400.000
445.000
381.000
368.000
428.667
453.667
426.500
438.500
435.083
482.625
440.000
491.000
449.778
394.583
316.750
425.000
490.583
457olB2
MEAN
CHLORA
3.081
0.945
5.567
9.078
6.967
39.600
12.483
1.900
2.483
33.583
2.700
2.000
12.467
11.767
45.950
6.350
5.692
25.329
7.860
4.533
18.222
5.675
1.844
7.200
72.012
7.S&?
15-
MIN 00
13.600
9.200
9.400
14.800
14.000
10.400
10.400
7.800
11.200
8.600
9.600
6.000
13.bOO
10.600
14.200
8.400
14.600
11.600
12.400
8.800
12.400
13.200
12.600
3.400
?.i.400
IIoCCC
KEDiaN
OISS 0«T-!0 P
0.007
0.003
0.006
0.006
0.012
0.052
0.004
0.005
0.003
0.107
0.002
0.003
0.009
0.033
0.010
0.004
0.006
0.007
0.011
0.008
0.008
0.004
0.005
0.006
a. 012
0.609
-------
PERCENT OF LAKES WITH HIGHER VALUES (NUMBER OF LAKES *ITH HIGHEH VALUES)
LAKE
CODE LAKE NAHE
0408 LAKE POWELL
4901 BEAR LAKE
4902 LOWER BONN'S RESERVOIR
4903 DEER CREEK RESERVOIR
4904 ECHO RESERVOIR
4905 LYNN RESERVOIR
4906 FISH LAKE
4907 HUNTINGTON NORTH RESERVO
4908 JOE'S VALLEY RESERVOIR
4909 MINERSVILLE RESERVOIR
4910 MOON LAKE
4911 NAVAJO LAKE
4912 NEWCASTLE RESERVOIR
4913 OTTER CREEK RESERVOIR
4914 PAN8UITCH LAKE
4915 PELICAN LAKE
4916 PINEVIEW RESERVOIR
4917 PIUTE RESERVOIR
4918 PORCUPINE RESERVOIR
4919 PRUESS RESERVOIR (GARRIS
4920 SEVIER BRIDGE RESERVOIR
4921 STARVATION RESERVOIR
4922 STEINAKER RESERVOIR
4923 TROPIC RESERVOIR
4924 UTAH LAKE
4925 WILLARO BAY RESERVOIR
5605 FLAMING GORGE RESERVOIR
MEDIAN
TOTAL P
96 <
90 <
46 (
42 <
31 1
8 <
62 1
77 I
81 '
0 i
100 <
69 i
23 (
15 i
12 i
37 i
50 <
27 i
58 I
19 1
54 (
73 (
85 i
65 i
4 t
37 1
90 <
25)
; 23)
I 12)
1 ID
! 8)
I 2)
! 16)
! 20)
1 21)
I 0)
I 26)
I 18)
I 6)
I 4)
1 3)
I 9)
I 13)
1 7)
I 15)
I 5)
[ 14)
1 19)
I 22)
1 17)
I 1)
[ 9»
I 23>
MEDIAN
iNOPvi N
4 <
87 (
87 <
19 {
27 <
23 <
65 <
65 <
58 (
44 <
87 (
87 (
87 (
87 (
65 (
54 (
15 (
31 (
38 (
35 <
8 <
87 <
87 (
50 <
12 (
44 (
0 (
1>
19)
19)
5)
7)
6)
16)
16)
15)
11)
19)
19)
19)
19)
16)
14)
4)
8)
10)
9)
2)
19)
19)
13)
3)
ID
0)
500-
MEflN SEC
ai
96
85
42
19
58
100
69
62
27
73
77
46
15
50
35
38
8
31
0
23
65
88
54
4
12
92
( 21)
( 25)
( 22)
( 11)
< 5)
( 15)
( 26)
< 18)
( 16)
( 7)
( 19)
( 20)
( 12)
( 4)
( 13)
( 9)
( 10)
< 2)
( 8)
( 0)
C 6)
C 17)
{ 23)
( 14)
( 1)
( 3)
< 24)
MEAN
73 (
100 (
65 (
35 (
50 (
8 <
23 (
92 (
85 (
12 <
77 (
88 (
27 (
31 (
4 (
54 (
58 <
15 (
38 (
69 <
19 (
62 (
96 (
46 <
0 (
42 <
81 (
19)
26)
17)
9)
13)
2)
6)
24)
22)
3)
20)
23)
7)
8)
1)
14)
15)
4)
10)
18)
5)
16)
25)
12)
0)
ID
21)
15-
MIN 00
15
77
73
0
12
62
62
96
46
85
69
100
19
54
8
90
4
38
33
81
33
23
27
90
42
50
62
( 4)
( 20)
( 19)
( 0)
( 3)
( 15)
< 15)
( 25)
( 12)
( 22)
( 18)
( 26)
t 5)
< 14)
( 2>
i 23)
( 1)
( 10)
( 8)
< 21)
( 8)
( 6)
( 7)
< 23)
( ID
< 13)
i 15)
«t
OISS
42
90
50
58
13
4
79
69
96
0
100
85
27
8
23
73
58
46
19
37
37
79
65
58
13
31
90
:OIAN
ORT^O P
< 11)
( c3>
< 13)
< 14)
( 3)
( 1)
< 20)
< 18)
( 25)
( 0)
( 26)
( 22)
< 7)
( 2)
( 6)
< 19)
( 14)
( 12)
( 5)
( 9)
< 9)
( 20)
( 17)
( 14)
( 3)
( 8)
I 23)
INJE<
NO
311
540
406
196
152
163
391
468
42tt
168
506
50t>
229
210
162
343
223
165
217
241
174
389
448
363
75
216
415
-------
LAKES RANKED BY ISOEX NOS.
SANK LAKE CODE LAKE NAME INDEX NO
1 4901 BEAR LAKE 540
2 4911 NAVAJO LAKE 506
3 4910 NOON LAKE 506
4 4907 HUNTINGTON NORTH RESERVO 468
5 4922 STEINAKER RESERVOIR 448
6 4908 JOE'S VALLEY RESERVOIR 428
7 5605 FLAMING GORGE RESERVOIR 415
8 4902 LOrtER BOKN'S RESERVOIR 406
9 4906 FISH LAKE 391
10 4921 STARVATION RESERVOIR 389
11 4923 TROPIC RESERVOIR 363
12 4915 PELICAN LAKE 343
13 0408 LAKE POWELL 311
14 4919 PRUESS RESERVOIR (GARRIS 241
15 4912 NEWCASTLE RESERVOIR 229
16 4916 PINEVIEW RESERVOIR 223
17 4918 PORCUPINE RESERVOIR 217
18 4925 WILLARD BAY RESERVOIR 216
19 4913 OTTER CREEK RESERVOIR 210
20 4903 OEER CREEK RESERVOIR 196
21 4920 SEVIER BRIDGE RESERVOIR 174
22 4909 MINERSVIU-E RESERVOIR 168
23 4917 PIUTE RESERVOIR 165
24 4905 LYNN RESERVOIR 163
25 4914 PANQUITCH LAKE 162
26 4904 ECHO RESERVOIR 152
27 492* UTAH LAKE 75
-------
APPENDIX B
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"4 = 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 C
PHYSICAL and CHEMICAL DATA
-------
41 31 iO.O 111 44 M.O
PORCUPINE R£S£KvOIr<
49005 UTAH
150791
DATE
FROM
TO
75/05/14
75/08/06
75/09/33
DATE
FROM
TO
75/05/1*
75/08/06
75/09/33
TIME DEPTH
OF
DAY FEET
15 10 0000
15 10 0005
15 10 0025
15 10 0050
15 10 0075
15 10 0100
15 10 0130
16 20 0000
16 20 0005
16 30 0015
16 30 0040
16 30 0080
16 20 0111
08 40 0000
08 40 0005
08 40 0019
08 40 0051
TIME DEPTH
OF
DAY FEET
15 10 0000
IS 10 0005
15 10 0025
15 10 0050
15 10 0075
15 10 0100
15 10 0130
16 20 0000
16 20 0005
16 30 0015
16 30 0040
16 20 0080
16 20 0111
08 40 0000
08 40 0005
08 40 0019
08 40 0051
00010
oATER
TEMP
CENT
9.0
7.9
6.4
5.6
5.3
4.8
4.4
31.5
21.1
19.8
16.1
10.0
9.2
17.0
17.0
17.0
16.6
00665
PHOS-TOT
MG/L P
0.042
0.040
0.041
0.025
0.019
0.064
0.041
0.023
0.020
0.026
0.022
0.020
0.063
0.018
0.018
0.020
0.016
00300
DO
MG/L
11.2
11.2
10.4
10.2
9.6
e.4
11.2
9.9
10.0
9.4
7.0
4.8
2.6
6.2
6.0
5.8
5.9
32217
CHLRPHYL
A
UG/L
5.3
8.5
6.8
00077 00094
TRANSP CNDUCTVY
SECCMl F1ELO
INCHES MICrtOMHO
24 210
204
200
191
217
231
245
72 280
281
287
297
223
223
78 272
274
274
278
00031
INCOT LT
HEMMING
PERCENT
11EPALES 2111202
0134 FEET DEPTH CLASS 00
00400 00410 00610 00625 00630
PH T ALK NH3-N TOT KJEL N02&N03
SU
8.
8.
8.
8.
8.
8.
8.
8.
8.
8.
7.
8.
7.
7.
8.
8.
8.
75
75
50
40
30
10
70
50
30
40
70
00
80
90
00
00
10
CAC03
MG/L
145
145
141
162
181
197
144
163
163
170
189
172
168
177
182
186
183
TOTAL
MG/L
0.030
0.020
0.040
0.030
0.040
0.060
0.030
0.020
0.020K
0.020
0.050
0.030
0.060
0.020
0.030
0.050
0.030
N N-TOTAL
MG/L
0.500
0.300
0.300
0.300
0.300
0.400
0.500
0.200
0.300
0.300
0.200
0.300
0.300
0.200
0.200K
0.200
0.200
MG/L
0.090
0.100
0.180
0.200
0.210
0.230
0.120
0.020K
0.020K
0.020K
0.060
0.220
0.220
0.030
0.020
0.030
0.020
00671
PMOS-OIS
ORTMO
MG/L P
0.006
0.006
0.009
0.011
0.014
0.018
0.013
0.011
0.005
0.011
0.006
0.009
0.014
0.003
0.003
0.002
0.003
K VALUE KNOWN TO 8E
LESS THAN INDICATED
-------
5T3«ET RETRIEVAL
DATE
FROM
TO
75/05/14
75/08/06
TIME DEPTH
OF
DAY FEET
15 35 0000
15 35 0005
15 35 0025
15 35 0050
15 35 0070
16 00 0000
16 00 0005
16 00 0020
16 00 0049
cooio
WATER
TEMP
CENT
9.1
9.7
6.4
5.-*
4.9
21.8
21.8
19.4
12.8
00300 00077 00094
DO TRANSP CNDUCTVY
StCCHl FIELD
INCHES MICrJOMHO
11.4
13.0
10.4
10.2
12.6
9.4
9.6
9.2
4.4
30
96
200
205
189
169
179
290
265
295
273
491d02
41 31
05.0 111
43 42.0 3
PORCUPINE RESErtvOIK
49005
UTAH
11EPALES
0074
00400
PH
su
8.90
8.90
8.50
8.40
8.80
8.63
8.60
8.50
8.00
211
FEET DEPTH CLASS
00410
T ALK
CAC03
MG/L
142
143
126
137
142
163
161
172
193
00610
NH3-N
TOTAL
MG/L
0.030
0.020
0.030
0.040
0.020
0.020
0.020
0.020
0.080
150791
1202
00
00625
TOT KJEL
N
MG/L
0.600
1.000
0.500
0.300
0.300
0.200K
0.200K
0.200K
0.300
00630
N02&N03
N-TOTAL
MG/L
0.080
0.050
0.200
0.220
0.080
0.020K
0.020K
0.020
0.120
00671
PrtOS-OlS
ORTHO
MG/L P
0.006
0.011
0.020
0.024
0.013
0.013
0.014
0.013
0.016
00665
DATE TIME DEPTH PHOS-TOT
FROM OF
TO DAY FEET MG/L P
75/05/14
75/08/06
15 35
15 35
15 35
15 35
15 35
16 00
16 00
16 00
16 00
0000
0005
0025
0050
0070
0000
0005
0020
0049
0.090
0.084
0.064
0.062
0.041
0.016
0.021
0.022
0.054
32217 00031
CHLRPHYL INGOT LT
A REMNING
UG/L PERCENT
12.2
6.5
K VALUE KNOWN TO 8E
LESS THAN INDICATED
------- |