U.S. ENVIRONMENTAL PROTECTION AGENCY
NATIONAL EUTROPHICATION SURVEY
WORKING PAPER SERIES
PACIFIC NORTHWEST ENVIRONMENTAL RESEARCH LABORATORY
An Associate Laboratory of the
NATIONAL ENVIRONMENTAL RESEARCH CENTER - CORVALLIS, OREGON
and
NATIONAL ENVIRONMENTAL RESEARCH CENTER - LAS VEGAS, NEVADA
£7 GPO 697-O32
-------
REPORT
ON
C(MJNITY LAKE
NEW HAVEN COUNTY
CONECTICUT
EPA REGION I
WORKING PAPER No, 178
WlTH THE COOPERATION OF THE
CONNECTICUT DEPARTMENT OF ENVIRONMENTAL PROTECTION
AND THE
CONNECTICUT NATIONAL GUARD
JANUARY, 1975
-------
CONTENTS
Page
Foreword ii
List of Connecticut Study Lakes iv
Lake and Drainage Area Map v
Sections
I. Conclusions 1
II. Lake and Drainage Basin Characteristics 3
III. Lake Water Quality Summary 4
IV. Nutrient Loadings 8
V. Literature Reviewed 13
VI. Appendices 14
-------
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 fresh water lakes and
reservoirs.
OBJECTIVES
The Survey was designed to develop, 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)], 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.
-------
iii
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.
ACKNOWLEDGMENT
The staff of the National Eutrophication Survey (Office of
Research & Development, U. S. Environmental Protection Agency)
expresses sincere appreciation to the Connecticut Department of
Environmental Protection for professional involvement and to
the Connecticut National Guard for conducting the tributary
sampling phase of the Survey.
John J. Curry, Director of the former Water Resources Commission;
Roy B. Anderson, Principal Sanitary Engineer, and Steven Gerdsmeier,
Sanitary Engineer, of the Water Compliance Unit, Department of Environ-
mental Protection; and Sam Suffern, Assistant Director of Water and
Related Resources, Department of Environmental Protection, provided
invaluable lake documentation and counsel during the course of the
Survey.
Major General John F. Freund, the Adjutant General of Connecticut,
and Project Officer Lieutenant Colonel Daniel M. McGuire, who directed
the volunteer efforts of the Connecticut National Guardsmen, are also
gratefully acknowledged for their assistance to the Survey.
-------
IV
NATIONAL EUTROPHICATION SURVEY
STUDY LAKES
STATE OF CONNECTICUT
LAKE NAME
Aspinook Pond
Bantam
Community
Eagleville
Hanover Pond
Housatonic Impoundments:
Housatonic
Lillinonah
Zoar
COUNTY
New London, Windham
Litchfield
New Haven
Toll and
New Haven
Fairfield, New Haven
Fairfield, Litchfield,
New Haven
Fairfield, New Haven
-------
)'
&A4
\
*\
] Woodings
Pond
^y
PA3
(
-xl
j) fi&tfs'
I^Spru^/
£?f ^^~~
«&
*^J
/ f
r>
'
COMMUNITY
/>)
/ ^-.
1
-------
COMMUNITY LAKE
STORET NO. 0903
I. CONCLUSIONS
A. Trophic Condition:
Community Lake is hypereutrophic with massive algal growths,
very high nutrient levels, high turbidity, and conductivity high
for lakes in this region. The control yield of the algal assay
was very high. The high productivity suggested is substantiated
by the high algal counts and chlorophyll a^ values noted in August.
B. Rate-Limiting Nutrient:
Algal assay results indicate that phosphorus and nitrogen
were present in such high levels at the time of sampling that
some other unidentified nutrient limited growth of the assay
alga.
The lake data indicate nitrogen limitation at the other
sampling times (N/P ratios were less than 9/1), but it is likely
that the unidentified nutrient was limiting at those times as
well.
C. Nutrient Controllability:
1. Point sources—During the sampling year, Community Lake
received a total phosphorus load at a rate more than 65 times
greater than the rate proposed by Vollenweider (in press) as
"dangerous"; i.e., a eutrophic rate (see page 12). The hydraulic
-------
retention time of Community Lake is certain to be very short,
and Vollenweider's model may not be applicable to such water
bodies. Nonetheless, the trophic condition of Community Lake
is evidence of the extremely large nutrient loads received.
It is calculated that even complete removal of phosphorus
at the known point sources impacting this lake, as well as
upstream Hanover Pond*, would still leave a loading rate more
than 18 times the eutrophic rate, and it is concluded that
point-source phosphorus control within the limits of the Survey
study area would not significantly improve the trophic condition
of the lake.
2. Non-point sources (see page 12)--The phosphorus export
of the Quinnipiac River was very high during the sampling year
and is indicative of the point-source phosphorus contributions
to Hanover Pond as well as unmeasured point-sources elsewhere
in the drainage. It is concluded that reduction of the Quinnipiac
River phosphorus export to less than the lowest export measured
in an unimpacted tributary stream in the area (Sodom Brook to
2
Hanover Pond - 159 Ibs/mi /yr) would be necessary for a signifi-
cant improvement in the quality of Community Lake as well as
Hanover Pond. It appears that a basin-wide study, including
land-use analysis, is needed to identify the point and non-point
sources of phosphorus not accounted for in this Survey.
* Working Paper No. 180.
-------
II. LAKE AND DRAINAGE BASIN CHARACTERISTICS
A. Lake Morphometry:
1. Surface area: 90 acres.
2. Mean depth: unknown.
3. Maximum depth: 8 feet.
4. Volume: unknown.
B. Tributary and Outlet:
(See Appendix A for flow data)
1. Tributaries -
Name Drainage area* Mean flow*
Quinnipiac River 103.0 mi2 183.8 cfs
Minor tributaries & 2
immediate drainage - 5.9 mi 10.9 cfs
Totals 108.9 mi2 194.7 cfs
2. Outlet -
Quinnipiac River 109.0 mi **194.7 cfs
C. Precipitation***:
1. Year of sampling: 64.9 inches.
2. Mean annual: 47.0 inches.
* Drainage areas are accurate within ±1%; gaged mean daily and mean monthly
flows are accurate within ±10%; ungaged mean daily and mean monthly flows
are accurate within ±20%; and normalized mean monthly flows are accurate
within ±10% for gaged streams and within ±12% (high flow) to 27% (low flow)
for ungaged streams.
** Includes area of lake.
*** See Working Paper No. 1, "Survey Methods".
-------
III. LAKE WATER QUALITY SUMMARY
Community Lake was sampled three times during the open-water season
of 1972 by means of a pontoon-equipped Huey helicopter. Each time,
samples for physical and chemical parameters were collected from one
or more depths at a single station on the lake (see map, page v).
During each visit, a single depth-integrated (near bottom to surface)
sample was collected for phytoplankton identification and enumeration,
and a similar sample was taken for chlorophyll ^analysis. During the
last visit, a single five-gallon depth-integrated sample was composited
for algal assays. The maximum depth sampled was 5 feet.
The results obtained are presented in full in Appendix B, and the
data for the fall sampling period, when the lake essentially was well-
mixed, are summarized below. Note, however, the Secchi disc summary is
based on all values.
For differences in the various parameters at the other sampling
times, refer to Appendix B.
-------
A. Physical and chemical characteristics:
FALL VALUES
(10/04/72)
Parameter
Temperature (Cent.)
Dissolved oxygen (mg/1)
Conductivity (ymhos)
pH (units)
Alkalinity (mg/1)
Total P (mg/1)
Dissolved P (mg/1)
N02 + NO- (mg/1)
Ammonia fmg/1)
Secchi disc (inches)
Minimum Mean Median
15.3 15.3 15
6.0 6.0 6
350 350 350
7.3 7.3 7
80 80 80
0.990 1.035 1
0.890 0.905 0
1 .840 1 .845 1
2.670 2.720 2
*
ALL VALUES
36 36 36
.3
.0
.3
.035
.905
.845
.720
Maximum
15.3
6.0
350
7.3
80
1.080
0.920
1.850
2.770
36
Biological characteristics:
1. Phytoplankton* -
Sampling
Date
08/03/72
10/04/72
Dominant
Genera
1 . Chi amydomonas
2. Scenedesmus
3. Navicula
4. Cyclotella
5 . Synedra
Other genera
Total
1. Flagellates
2. Dinobryon
3. Navicula
4. Melosira
5 . Cryptomonas
Other genera
Number
per ml
14,414
631
540
450
450
1,893
18,378
2,830
1,170
679
528
264
2,189
Total
7,660
The May sample was lost in shipment.
-------
2. Chlorophyll a. -
(Because of instrumentation problems during the 1972 sampling,
the following values may be in error by plus or minus 20 percent.)
Sampling Station Chlorophyll a_
Date Number (yg/1)
05/29/72 01 18.4
08/03/72 01 108.7
10/04/72 01 17.8
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
0.012 P
0.024 P
0.060 P
0.060 P + 10.0 N
10.0 N
2. Discussion -
The control yield of the assay alga, Selenastrum capri-
cornutum. indicates that the potential primary productivity
of Community Lake was extremely high. Spikes with only phos-
phorus, only nitrogen, and both phosphorus and nitrogen failed
to significantly increase the yield. It appears that these,
two major nutrients were present in such high concentrations
that some other nutritional element (not determined) was limit-
ing.
0.490
0.502
0.514
0.550
0.550
0.490
2.247
2.247
2.247
2.247
12.247
12.247
59.3
. 60.5
56.2
64.1
63.9
52.3
-------
The lake data indicate nitrogen limitation at the other
sampling times (N/P ratios were less than 9/1); however, in
view of the high concentrations of nitrogen and phosphorus
at those times, it is likely that the unidentified nutrient
was limiting then as well.
-------
8
IV. NUTRIENT LOADINGS
(See Appendix C for data)
For the determination of nutrient loadings, the Connecticut National
Guard collected monthly near-surface grab samples from each of the
tributary sites indicated on the map (page v), except for the high run-
off months of March and April when two samples were collected. Samp-
ling was begun in August, 1972, and was completed in September, 1973.
Through an interagency agreement, stream flow estimates for the
year of sampling and a "normalized" or average year were provided by
the Connecticut District Office of the U.S. Geological Survey for the
tributary sites nearest the lake.
In this report, nutrient loads for sampled tributaries were.deter-
mined by using a modification of a U.S. Geological Survey computer
program for calculating stream loadings*. The background nutrient loads
shown for the Quinnipiac River are those measured at the outlet of up-
stream Hanover Pond** and reflect the point-source discharges to that
water body (essentially no retention in Hanover Pond).
Nutrient loadings for unsampled "minor tributaries and immediate
drainage" ("ZZ" of U.S.G.S.) were estimated using the mean concentrations
in the unnamed stream at station B-l and the mean annual ZZ flow.
The operator of the Meriden wastewater treatment plant provided a
limited number of effluent samples and corresponding flow data.
* See Working Paper No. 1.
** See Working Paper No. 180.
-------
A. Waste Sources:
1. Known muncipal* -
Pop. Mean Flow Receiving
Name Served Treatment (mgd) Water
Meriden 44,800 trickling 6.900 Quinnipiac
filter River
2. Known industrial - None
* Armet, 1973.
-------
10
B. Annual Total Phosphorus Loading - Average Year:
1. Inputs -
Ibs P/ % of
Source yr total
a. Tributaries (non-point load) -
Quinnipiac River 124,450 59.3
b. Minor tributaries & immediate
drainage (non-point load) - 1,240 0.6
c. Known municipal -
Meriden 84,310 40.1
d. Septic tanks - Unknown
e. Known industrial - None
f. Direct precipitation* - 10. <0.1
Total 210,010 100.0
2. Outputs -
Lake outlet - Quinnipiac River 202,440
3. Net annual P accumulation - 7,570 pounds
* See Working Paper No. 1.
-------
11
C. Annual Total Nitrogen Loading - Average Year:
1. Inputs -
Ibs N/ % of
Source yr total
a. Tributaries (non-point load) -
Quinnipiac River 839,390 66.0
b. Minor tributaries & immediate
drainage (non-point load) - 35,520 2.8
c. Known municipal -
Meriden 395,880 31.1
d. Septic tanks -Unknown
e. Known industrial - None
f. Direct precipitation* - 870 0.1
Total 1,271,660 100.0
2. Outputs -
Lake outlet - Quinnipiac River 1,220,530
3. Net annual N accumulation - 51,130 pounds
* See Working Paper No. 1.
-------
12
D. Mean Annual Non-point Nutrient Export by Subdrainage Area:
Tributary Ibs P/mi2/yr Ibs N/mi2/yr
Quinnipiac River 1,208 8,149
E. Yearly Loading Rates:
In the following table, the existing phosphorus loading
rates are compared to those proposed by Vollenweider (in press).
Essentially, his "dangerous" rate is the rate at which the
receiving water would become eutrophic or remain eutrophic;
his "permissible" rate is that which would result in the
receiving water remaining oligotrophic or becoming oligotrophic
if morphometry permitted. A mesotrophic rate would be consid-
ered one between "dangerous" and "permissible".
Note that Vollenweider's model may not be applicable to
water bodies with very short detention times.
Total Phosphorus Total Nitrogen
Units
Ibs/acre/yr
grams/m^/yr
Total Accumulated
2,333.4 84.1
261.54 9.43
Total Accumulated
14,129.6 568.1
1,583.7 63.7
Vollenweider loading rates for phosphorus
(g/m2/yr) based on area and mean outflow
of Community Lake:
"Dangerous" (eutrophic rate) 4.00
"Permissible" (oligotrophic rate) 2.00
-------
13
V. LITERATURE REVIEWED
Armet, Brian W., 1973. Wastewater treatment plant questionnaire.
CT. Dept. of Env. Prot., Hartford.
Vollenweider, Richard A. (in press). Input-output models. Schweiz.
Z. Hydrol.
-------
VII. APPENDICES
APPENDIX A
TRIBUTARY FLOW DATA
-------
TRIBUTARY FLOW INFORMATION FOR CONNECTICUT
11/26/74
LAKE CODE 0903
COMMUNITY LAKE
TOTAL DRAINAGE AREA OF LAKE 109.00
JAN FEB MAR
SUB-DRAINAGE
TRIBUTARY AREA
0903A1
0903A2
0903ZZ
109.00
103.00
6.00
334.00 24P.OO 380.00
221.00 234.00 356.00
13.00 14.00 24.00
APR
337.00
316.00
21.00
MAY
225.00
212.00
13.00
NORMALIZED FLOWS
JUN JUL AUG
149.80
144.00
5.80
99.10
96.00
3.10
93.40
89.00
4.40
SEP
103.80
100.00
3.80
OCT
107.70
102.00
5.70
NOV
168.00
157.00
11.00
DEC
MEAN
195.00 194.69
183.00 183.81
12.00 10.88
SUMMARY
TOTAL DRAINAGE AREA OF LAKE =
SUM OF SUB-DRAINAGE AREAS =
109.00
109.00
TOTAL FLOW IN
TOTAL FLOW OUT
2340.80
2340.80
MEAN MONTHLY FLOWS AND DAILY FLOWS
TRIBUTARY MONTH YEAR MEAN FLOW DAY
0903A1
0903A2
8
9
10
11
12
1
2
3
4
5
6
7
8
9
8
9
10
11
12
1
?
3
4
5
6
7
B
9
7?
72
72
72
72
73
73
73
73
73
73
73
73
73
72
72
72
72
72
73
73
73
73
73
73
73
73
73
FLOW DAY
FLOW DAY
FLOW
147.00
69.00
136.00
326.00
525.00
395.00
535.00
340.00
517.00
350.00
194.00
187.00
106.00
105.00
140.00
86.00
129.00
305.00
493.00
373.00
501.00
318.00
484.00
328.00
182.00
177.00
100.00
99.00
19
23
21
18
9
13
10
10
14
19
2
31
31
8
19
23
21
18
9
13
10
10
14
19
2
31
31
8
132.00
83.00
106.00
247.00
1300.00
238.00
409.00
419.00 27
364.00 30
309.00
264.00
100.00
70.00
70.00
126.00
80.00
100.00
231.00
1220.00
225.00
383.00
392.00 27
341.00 30
289.00
247.00
95.00
66.00
66.00
451.00
396.00
422.00
371.00
-------
TRIBUTARY FLO*1 INFORMATION FOR CONNECTICUT
11/26/74
LAKE CODE 0903
COMMUNITY LAKE
MEAN MONTHLY FLOWS AND DAILY FLOWS
TRIBUTARY
0903Z7
MONTH YEAR
R
9
10
11
12
1
?
3
4
5
ft
7
8
Q
72
72
72
72
72
73
73
73
73
73
73
73
73
73
MEAN FLOW DAY
6.90
3.30
7.20
21.00
32.00
2?. 00
34.00
22.00
33.00
22.00
12.00
10.00
5.80
5.30
19
23
21
18
9
13
10
10
14
19
2
31
31
R
FLOW DAY
6.20
3.00
5.60
16.00
80.00
13.00
26.00
27.00
23.00
20.00
17.00
5.50
3.80
3.80
FLOW DAY
FLOW
27
30
29.00
25.00
-------
APPENDIX B
PHYSICAL and CHEMICAL DATA
-------
STORE! RETRIEVAL DATE 74/11/26
090301
41 27 50.0 072 49 43.0
COMMUNITY LAKE
09 CONNECTICUT
DATE
FROM
TO
7?/05/29
72/08/03
72/10/04
TIME DEPTH
OF
DAY FEET
16 20 0000
16 20 0005
18 15 0000
08 40 0000
08 40 0004
00010
WATER
TEMP
CENT
20.2
20.2
23.4
15.3
00300 00077 00094
DO TRANSP CNDUCTVY
SECCHI FIELD
MG/L INCHES MICROMHO
12.0
12.0
9.6
6.0
36
36
280
280
280
350
350
11EPALES
3
00400
PH
su
7.60
7.60
7.00
7.25
7.25
00410
T ALK
CAC03
MG/L
61
63
66
80
80
2111202
0006
00630
N02&N03
N-TOTAL
MG/L
1.500
1.500
1.600
1.850
1.840
FEET DEPTH
00610
NH3-N
TOTAL
MG/L
0.570
0.580
0.550
2.670
2.770
00665
PHOS-TOT
MG/L P
0.488
0.420
0.370
0.990
1.080
00666
PHOS-OIS
MG/L P
0.308
0.360
0.252
0.890
0.920
3?217
DATE TIME DEPTH CHLRPHYL
FROM OF A
TO DAY FEET UG/L
72/05/29 16 20 0000 18.4J
72/08/03 18 15 0000 108.7J
72/10/04 08 40 0000 17.8J
J VALUE KNOWN TO BE IN ERROR
-------
APPENDIX C
TRIBUTARY and WASTEWATER
TREATMENT PLANT DATA
-------
STORET RETRIEVAL DATE 74/11/26
0903A1 LS0903A1
41 27 30.0 072 50 00.0
QUINNIPIAC RIVER
09 7.5 WALLINGFORD
0/COMMUNITY LAKE
HALL ST BP.DG
11EPALES 2111204
4 0000 FEET
DATE
FROM
TO
72/08/19
72/09/23
7?/10/21
7P/11/18
72/12/09
73/01/13
73/02/10
73/03/10
73/03/27
73/04/14
73/04/30
73/05/19
73/06/02
73/07/31
73/03/31
73/09/08
00630 00625
TIME DEPTH N02^N03 TOT KJEL
OF N-TOTAL N
DAY FFET
10
10
09
09
08
09
10
11
10
08
11
OR
09
13
09
09
25
04
40
00
45
15
00
35
15
45
55
45
45
?5
45
45
MG/L
1
1
0
1
0
p
1
0
1
1
1
1
1
1
1
1
.560
.545
.570
.000
.980
.000
.340
.990
.080
.140
.040
.220
.000
.380
.600
.540
MG/L
I.
?.
?.
1.
1.
1.
0.
•
•
•
•
•
•
2.
2.
3.
850
700
650
540
3?0
9«0
940
300
400
370
320
400
500
940
900
100
00610 00671 00665
NH3-N PHOS-OIS PHOS-TOT
TOTAL ORTHO
MG/L
0
1
0
0
0
1
0
0
0
0
0
0
-0
0
0
1
.890
.500
.375
.740
.270
.000
.410
.420
.420
.440
.450
.550
.530
.750
.870
.580
MG/L
0.
0.
0.
0.
0.
0.
0.
0.
0.
0.
0.
0.
0.
0.
0.
0.
p
359
270
165
273
088
350
135
169
138
176
164
231
270
390
690
640
MG/L P
0.610
0.870
0.830
0.430
0.176
0.570
0.230
0.260
0.270
0.300
0.270
0.375
0.440
0.590
1.07S
0.960
DEPTH
-------
STORE! RETRIEVAL DATE 74/11/26
0903A2 LS0903A2
41 29 30.0 072 49 00.0
QUINNIPIAC RIVER
09 7.5 WALLINGFOWD
I/COMMUNITY LAKE
ST HWY 88 8RDG
11EPALES 2111204
4 0000 FEET
DATE
FROM
TO
72/08/19
72/09/23
72/10/21
72/11/18
72/12/09
73/01/13
73/02/10
73/03/10
73/03/27
73/04/14
73/04/30
73/05/19
73/06/02
73/07/31
73/OM/31
71/09/OH
00630 00625
TIME DEPTH N02&N03 TOT KJEL
OF N-TOTAL N
DAY FEET
09
09
09
08
07
08
09
11
10
08
11
07
08
13
10
08
45
14
15
30
55
00
30
00
40
15
05
45
15
50
0?
30
MG/L
1.
1.
0.
1.
0.
2.
1.
0.
0.
1.
1.
1.
1.
1.
2.
1.
600
700
655
100
980
040
400
990
980
140
100
160
020
500
020
890
MG/L
1.
3.
2.
1.
1.
1.
0.
0.
0.
1.
1.
1.
1.
1.
2.
3.
800
000
950
680
300
600
780
920
900
000
200
150
890
800
520
500
00610 00671 00665
NH3-N PHOS-DIS PHOS-TOT
TOTAL ORTHO
MG/L
0.
0.
0.
0.
0.
0.
0.
0.
0.
0.
0.
0.
0.
0.
2.
2.
750
280
345
530
230
760
378
378
378
430
480
450
460
880
000
000
MG/L
0.
0.
0.
0.
0.
0.
0.
0.
0.
0.
0.
0.
0.
0.
1.
1.
p
460
546
225
260
087
240
120
150
132
160
168
198
210
500
200
050
MG/L P
0.730
0.570
0.300
0.399
0.154
0.400
0.210
0.240
0.250
0.260
0.290
0.330
0.370
0.680
1.400
1.570
DEPTH
-------
STORET RETRIEVAL DATE 74/11/26
0903A3 LS0903A3
41 30 00.0 072 49 00.0
GHIIMNIPIAC RIVER
09 7.5 WALLINGFORO
I/COMMUNITY LAKE
OAK ST BRDG BELOW MEPIOEN STP
11EPALES 2111204
4 0000 FEET DEPTH
DATE
FROM
TO
7?/08/19
7P/09/23
7P/10/21
7?/ll/18
7?/12/09
73/01/13
73/02/10
73/03/10
73/03/27
73/04/14
73/0^/30
73/05/19
73/C6/02
73/07/31
73/08/31
73/09/08
00630 006?5
TIME DEPTH N02&N03 TOT KJEL
OF N-TOTAL N
DAY FFET MG/L
09
09
09
OH
07
07
09
10
10
08
11
07
08
13
09
08
35
00
10
15
4?
45
15
45
50
00
20
30
00
40
50
05
1
1
0
1
1
1
1
0
1
1
2
.600
.900
.490
.100
.000
.900
.340
.980
.000
.120
.060
.160
.000
.580
.260
.200
MG/L
2.
2.
3.
1.
0.
1.
0.
1.
1.
1.
1.
1.
1.
3.
?.
?.
000
450
100
320
750
470
910
000
450
000
700
150
400
000
310
400
00610 00671 00665
NH3-N PHOS-DIS PHOS-TOT
TOTAL ORTHO
MG/L
0
0
0
0
0
0
0
0
0
0
0
0
0
1
0
1
.770
.240
.300
.630
.210
.790
.410
.A3C
.440
.430
.660
.460
.480
.260
.850
.370
MG/L P
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
0
.470
.335
.170
.260
.084
.250
.126
.170
.147
.154
.189
.198
.210
.620
.020
.950
MG/L P
0.730
0.380
0.970
0.399
0.154
0.400
0.220
0.270
0.270
0.260
0.320
0.310
C.365
0.840
1.250
1.250
-------
STORE! RETRIEVAL DATE 74/11/26
0903B1 LS0903B1
41 28 30.0 072 49 30.0
NO NAME
09 7.5 WALLINGFOPO
T/COMMUNITY LAKE
ROAD OFF US 5 CROSSING
11EPALES 2111204
4 0000 FEET
DATE
FROM
TO
72/08/19
72/09/23
72/10/21
72/11/1H
72/12/09
73/01/13
73/02/10
73/03/10
73/03/27
73/04/14
73/04/30
73/05/19
73/06/02
73/07/31
73/08/31
73/09/08
00630 00625
TIME DEPTH N02&N03 TOT KJEL
OF N-TOTAL N
DAY FF.ET
10
09
09
OR
08
Oft
09
11
10
OS
11
08
08
14
10
09
00
45
25
45
10
15
45
15
30
10
30
18
30
05
20
00
MG/L
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
.290
.370
.647
.670
.710
.940
.780
.510
.570
.710
.510
.510
.440
.260
.230
.210
MG/L
0.
1.
1.
0.
0.
0.
0.
0.
0.
0.
0.
0.
1.
2.
0.
0.
200
150
200
350
610
230
215
320
320
540
s?o
480
050
100
255
360
00610 00671 00665
NH3-N PHOS-DIS PHOS-TOT
TOTAL ORTHO
MG/L
0.
0.
0.
0.
0.
0.
0.
0.
0.
0.
0.
0.
0.
0.
0.
0.
115
134
120
132
100
060
066
032
050
066
037
048
073
108
076
080
MG/L
0.
0.
0.
0.
0.
0.
0.
0.
0.
0.
0.
0.
0.
0.
0.
0.
P
008
010
005K
009
Oil
Oil
006
Oil
013
009
009
014
009
008
029
009
MG/L P
0.024
0.046
0.020
0.020
0.035
0.015
0.040
0.035
0.030
0.030
0.020
0.025
0.035
0.060
0.030
0.050
DEPTH
Tri'.M
-------
STORET RETRIEVAL DATE 74/11/26
0903C1 LS0903C1
41 28 30.0 07? 49 30.0
NO N4ME
09 7.5 WALLINGFORD
T/COMMUNITY LAKE
POflD OFF US 5 CROSSING
11EPALF.S 2111204
4 0000 FEET
DATE
FROM
TO
72/08/19
72/09/23
72/10/21
7?/ 11/18
72/12/09
73/01/13
73/02/10
73/03/10
73/03/27
73/04/14
73/04/30
73/05/19
73/06/02
73/07/31
73/09/0*
00630 00625
TIME DEPTH N02&N03 TOT KJEL
OF N-TOTAL N
DAY FEET
09
09
08
oa
08
09
11
10
08
11
Ofl
08
14
09
50
28
50
20
30
45
20
?5
35
40
38
30
00
15
MG/L
0.
0.
1.
2.
1.
3.
3.
2.
?.
2.
1.
1.
1.
1.
1.
810
710
370
600
860
300
100
400
100
300
640
760
760
120
180
MG/L
0
0
0
0
1
0
0
0
0
0
0
0
0
0
.780
.^50
.375
.560
.050
.270
.140
.270
.100K
.100K
.315
.160
.860
.390
00610 00671 00665
NH3-N PHOS-DIS PHOS-TOT
TOTAL OPTHO
MG/L
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
.058
.060
.078
.035
.035
.025
.019
.016
.020
.017
.010
.020
.027
.100
.029
MG/L P
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
.063
.032
.096
.028
.027
.026
.016
.115
.069
.015
.028
.023
.032
.IPO
.056
MG/L P
0.105
0.085
0.126
0.04iS
0.135
0.060
0.035
0.140
0.110
0.030
0.045
0.037
0.055
0.200
O.ORO
DEPTH
-------
STORET RETRIEVAL DATE 74/11/27
090350 TF090350 P044800
41 31 00.0 072 49 30.0
MERIDEN
09 7.5 MERIDEN
r/cOMMUNiTY LAKE
QOINEBAUG RIVER
11EPALES 2141204
4 0000 FEET DEPTH
DATE
FROM
TO
73/09/06
CP(T)-
73/09/06
73/10/04
C^MT)-
73/10/04
73/1 1/07
73/12/06
74/01/06
74/02/04
CP(T)-
74/02/04
74/03/01
CP(T)-
74/03/01
74/05/03
CP(T)-
74/05/03
74/06/05
CP(T>-
74/06/05
00630
TIME DEPTH NO?&N03
OF N-TOTAL
DAY FEET MG/L
00 00
08 00
00
08
03
16
Oft
16
09
15
07
15
00
00
00
00
00
00
00
00
00
00
0.
0.
2.
2.
2.
1.
1.
1.
520
3?0
100
500
6UO
760
440
09U
00625
TOT KJEL
N
MG/L
17.600
27.
26.
8.
3.
10.
7.
5.
10.
000
000
600
900
000
225
600
000
00610 00671 00665
NH3-M PHOS-OIS PHOS-TOT
TOTAL ORTHO
MG/L MG/L P MG/L P
5.000
13
8
0
0
4
0
1
1
.700
.400
.170
.440
.POO
.130
.850
.700
4.600
3.900
1.200
0.820
1.300
1.030
1.950
2.200
6.400
6.700
2.000
1.250
1.800
1.980
1.950
3.100
50051 50053
FLOW CONDUIT
RATE FLOW-MGD
INST MGD MONTHLY
6.000 6.000
7.000 6.500
5.900 6.000
6.000 6.000
12.000 10.000
10.000
12.000
0.006
------- |