U.S. ENVIRONMENTAL PROTECTION AGENCY
NATIONAL EUTROPHICATION SURVEY
WORKING PAPER SERIES
REPORT
ON
HANOVER POND
NEW HAVEN COUNTY
CONNECTICUT
EPA REGION I
WORKING PAPER No, 180
PACIFIC NORTHWEST ENVIRONMENTAL RESEARCH LABORATORY
An Associate Laboratory of the
NATIONAL ENVIRONMENTAL RESEARCH CENTER - CORVALLIS, OREGON
and
NATIONAL ENVIRONMENTAL RESEARCH CENTER - LAS VEGAS, NEVADA
t?GPO 697-O32
-------
REPORT
ON
HANOVER POND
NEW HAVEN COUNTY
CONNECTICUT
EPA REGION I
WORKING PAPER No, 180
WITH 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 9
V. Literature Reviewed 14
VI. Appendices 15
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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
reservoi rs.
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)L
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.
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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
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HANOVER POND
Sewage Treatment Facility
® Tributary Sampling Site
x Lake Sampling Site
Direct Drainage Area Limits
41°30'
-------
HANOVER POND
STORE! NO. 0905
I. CONCLUSIONS
A. Trophic Condition:
Hanover Pond is a hypereutrophic water body characterized
by high turbidity and high nutrient levels on all sampling dates,
Frequent algal blooms have been reported*.
B. Rate-Limiting Nutrient:
The results of the algal assay of the pond sample collected
in May, 1973 indicate possible trace-element limitation.
The 1972 lake data indicate nitrogen limitation at all
sampling times, (N/P ratios were 10/1 or less).
C. Nutrient Controllability:
1. Point sources—During the sampling year, Hanover Pond
received a total phosphorus load at a rate more than 48 times
the rate proposed by Vollenweider (in press) as "dangerous";
i.e., a eutrophic rate (see page 13). While Vollenweider's
model may not be applicable to water bodies with very short
hydraulic retention times, the hypereutrophic condition of
Hanover Pond is evidence of the exceptionally large nutrient
loading received.
It is calculated that the two point sources considered in
this study contributed about 52% of the total phosphorus load.
* Anonymous, 1972.
-------
Even complete removal of phosphorus at the two point sources
would still leave a loading about 23 times the eutrophic rate,
and it is concluded that control of phosphorus at the two
point sources studied would not result in significant improve-
ment in the trophic condition of Hanover Pond.
2. Non-point sources (see page 13)~The phosphorus exports
of the Quinnipiac River and Harbor Brook were quite high during
the sampling year (ca. four times the P export of Sodom Brook).
The high export of the Quinnipiac River likely is due to point
sources beyond the 25-mile limit of the Survey*, and the high
export of Harbor Brook may be due to urban drainage in the City
of Meriden.
In all, non-point sources are estimated to have contributed
over 47% of the total phosphorus load to Hanover Pond during the
sampling year.
* See Working Paper No. 1, "Survey Methods".
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II
LAKE AND DRAINAGE BASIN CHARACTERISTICS
A. Lake Morphometry :
1. Surface area: 64 acres.
2. Mean depth: 4.5 feet.
3. Maximum depth: 9 feet.
4. Volume: 288 acre feet.
5. Mean hydraulic retention time: 20 hours.
B. Tributary and Outlet:
(See Appendix A for flow data)
1. Tributaries -
Name
Quinnipiac River
Sodom Brook
Harbor Brook
Minor tributaries &
immediate drainage -
Totals
2. Outlet -
Quinnipiac River
C. Precipitation***:
1. Year of sampling: 64.9 inches.
2. Mean annual: 47.0 inches.
Drainage area* Mean flow*
.2
76.9 mi'2
5.1 mi?
11.9 mr
1.1 mi
95.0 mi'
,2
137.4 cfs
9.3 cfs
21.3 cfs
2.4 cfs
170.4 cfs
95.1 mi2** 170.4 cfs
t Anonymous, 1972.
* 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 pond.
*** See Working Paper No. 1, "Survey Methods".
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III. LAKE WATER QUALITY SUMMARY
Hanover Pond 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 a_ analysis. During
the last visit, a five-gallon depth-integrated sample was collected
for algal assays. The maximum depth sampled was 8 feet.
The results obtained are presented in full in Appendix B, and the
data for the fall sampling period, when the pond 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.
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A. Physical and chemical characteristics:
Parameter Minimum
Temperature (Cent.) 14.8
Dissolved oxygen (mg/1) 10.6
Conductivity (ymhos) 280
pH (units) 7.3
Alkalinity (mg/1) 57
Total P (mg/1) 0.403
Dissolved P (mg/1) 0.356
N0? + N03 (mg/1) 1.960
Ammonia fmg/1) 0.400
FALL VALUES
(10/04/72)
Mean Median
Maximum
14.8
10.6
280
7.5
58
0.424
0.369
2.000
0.470
14.8
10.6
280
7.5
58
0.424
0.369
2.000
0.470
14.8
10.6
280
7.8
59
0.446
0.382
2.040
0.540
ALL VALUES
Secchi disc (inches)
24
39
40
54
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B. Biological characteristics:
1. Phytoplankton -
Sampli ng
Date
05/29/72
08/03/72
10/04/72
Dominant
Genera
1. Trachelomonas
2. Cyclotella
3. Fragilaria
4. Synedra
5. Navicula
Other genera
Total
1. Navicula
2. Nitzchia
3. Chroococcus
4. Dinobryon
5. Cyclotella
Other genera
Total
1. Dinobryon
2. Cryptomonas
3. Nitzschia
4. Navicula
5. Achnanthes
Other genera
Number
per ml
2,134
904
416
344
217
994
5,009
3,707
753
392
271
271
211
1.024
Total
2,922
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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 13.1
08/03/72 01 11.0
10/04/72 01 32.5
Limiting Nutrient Study:
1. Autoclaved, filtered, and nutrient spiked -
Spike (mg/1)
Control
0.010 P
0.020 P
0.050 P
0.050 P + 5.0 N
0.050 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 Hanover Pond was very high at the time the sample was col-
lected in May, 1973*.
With the N/P ratio of the control, the sample should have
been nitrogen limited; and with the increased spikes of ortho-
phosphorus, the samples should have become even more nitrogen
Ortho P
Cone, (mg/1)
0.154
0.154
0.174
0.204
0.204
0.204
0.154
Inorganic N
Cone, (mg/1)
1.546
1.546
1.546
1.546
6.546
11.546
11.546
Maximum yield
(mg/1 -dry wt.)
44.9
44.0
47.3
65.9
83.6
71.4
47.0
N/P
Ratio
10/1
9/1
9/1
8/1
* Survey personnel collected an assay sample in October, 1972, but the sample
was lost in shipment. Personnel of the Connecticut Department of Environ-
mental Protection collected the May, 1973, sample used for the assay.
-------
8
limited. However, the 0.05 mg/1 orthophosphorus spike
resulted in a marked increase in yield despite a N/P
ratio of 8/1 (which indicates the sample was nitrogen
limited). Also, with a nitrogen-limited control sample,
the addition of nitrogen should have resulted in a yield
much greater than the control yield. Note, however, that
the nitrogen-only spike resulted in a yield not signifi-
cantly greater than the control yield.
The results, then, indicate the growth of the test
alga in the assay sample was limited by something other
than phosphorus or nitrogen. Possibly a trace element
(i.e., a contaminant) was present in sufficient quantity
in the largest orthophosphorus spike to stimulate a growth
response but was absent or of insufficient quantity in the
nitrogen-only spike.
The 1972 pond data indicate nitrogen limitation at all
sampling times. All of the N/P ratios were 10/1 or less,
and nitrogen limitation would be expected.
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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 periods of no
flow or ice cover when samples were omitted at some of the stations.
Sampling 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 nutrient loads given for
the Quinnipiac River are those measured at station A-2 minus the point
source loads. The phosphorus load determined in this way approximated
(85 percent) that obtained by using upstream (station A-6) phosphorus
concentrations and A-2 flows. However, by either method of calculation,
this "non-point" loading is approximately five times the anticipated
non-point loading estimates obtained by using Sodom Creek phosphorus
concentrations and inlet flows.
Nutrient loadings for unsampled "minor tributaries and immediate
drainage" ("ZZ" of U.S.G.S.) were estimated using the means of the
* See Working Paper No. 1.
-------
10
2
nutrient loads, in Ibs/mi /year, in Sodom Brook at station B-l and
2
multiplying the means by the ZZ area in mi .
The operators of the Cheshire and Southington wastewater treatment
plants provided monthly effluent samples and corresponding flow data.
A. Waste Sources:
1. Known muncipal* -
Name
Southington
Cheshire
Pop.
Served
22,000
2,000
Mean Flow
Treatment (mgd)
trickling
filter
act. sludge
3.896
0.238
Receiving
Water
Quinnipiac River
Quinnipiac River
2. Known industrial - No industrial sources have been identified.
* Armet, 1973.
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11
B. Annual Total Phosphorus Loading - Average Year:
1. Inputs -
Ibs P/ % of
Source yr total
a. Tributaries (non-point load) -
Quinnipiac River 51,680 41.4
Sodom Brook 810 0.6
Harbor Brook 6,590 5.3
b. Minor tributaries & immediate
drainage (non-point load) - 170 0.1
c. Known municipal -
Southington 59,670 47.9
Cheshire 5,760 4.6
d. Septic tanks - Unknown
e. Known industrial - None
f. Direct precipitation* - 10^ <0.1
Total 124,690 100.0
2. Outputs -
Lake outlet - Quinnipiac River 124,450
3. Net annual P accumulation - 240 pounds
* See Working Paper No. 1.
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12
C. Annual Total Nitrogen Loading - Average Year:
1. Inputs -
Ibs N/ % of
Source y_r total
a. Tributaries (non-point load) -
Quinnipiac River 421,320 54.1 '
Sodom Brook 30,290 3.9 .
Harbor Brook 86,190 11.1
b. Minor tributaries & immediate
drainage (non-point load) - 6,530 0.8
c. Known municipal -
Southington 217,920 28.0
Cheshire 15,590 2.0
d. Septic tanks - Unknown
e. Known industrial - None
f. Direct precipitation* - 620 <0.1
Total 778,460 100.0
2. Outputs -
Lake outlet - Quinnipiac River 839,390
3. Net annual N loss - 60,930 pounds
D. Mean Annual Non-point Nutrient Export by Subdrainage Area:
2 2
Tributary Ibs P/mi /yr Ibs N/mi /yr
Quinnipiac River 672 5,479
Sodom Brook 159 5,939
Harbor Brook 554 7,243
* See Working Paper No. 1.
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13
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
1,948.3 3.8
218.37 0.42
Total
12,163.4
1,363.3
Accumulated
loss*
Vollenweider loading rates for phosphorus
(g/m^/yr) based on mean depth and mean
hydraulic retention time of Hanover Pond:
o
"Dangerous" (eutrophic rate) 4.50
"Permissible" (oligotrophic rate) 2.25
* There was an apparent loss of nitrogen during the sampling year. This may
have been due to nitrogen fixation in the pond, solubilization of previously
sedimented nitrogen, recharge with nitrogen-rich ground water, unknown and
unsampled point sources discharging directly to the pond, or the limits of
accuracy of the flow estimates provided by U.S.G.S. (see page 3).
Whatever the cause, a similar nitrogen loss has occurred at Shagawa Lake,
Minnesota, which has been studied intensively by EPA's National Eutrophication
Research and Lake Restoration Branch.
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14
V. LITERATURE REVIEWED
Anonymous, 1972. Survey questionnaire. CT Dept. Env. Prot., Hartford.
Armet, Brian W., 1973. Wastewater treatment plant questionnaires. CT
Dept. Env. Prot., Hartford.
Vollenweider, Richard A. (in press). Input-output models. Schweiz.
Z. Hydrol.
-------
15
VII. APPENDICES
APPENDIX A
TRIBUTARY FLOW DATA
-------
TRIBUTARY FLOW INFORMATION FOR CONNECTICUT
11/26/74
LAKE CODE 0905
HANOVER POND
TOTAL DRAINAGE AREA OF LAKE
95.10
SUB-DRAINAGE
TRIBUTARY AREA
JAN
FES
MAR
APR
MAY
NORMALIZED FLOWS
JUN JUL AUG
SEP
OCT
NOV
DEC
MEAN
0905A1
0905A2
0905B1
0905C1
0905ZZ
95.10
76.90
5.15
11.90
1.20
204.80
165.00
11.00
26.00
2.80
217.00
175.00
12.00
27.00
3.00
337.00
266.00
20.00
46.00
5.00
300.40
236.00
18.00
42.00
4.40
197.60
159.00
11.00
25.00
2.60
124.20
107.00
5.00
11.00
1.20
81.83
72.00
2.60
6.70
0.53
79.38
66.00
3.80
8.70
0.88
86.78
75.00
3.20
7.90
0.68
93.10
76.00
4.90
11.00
1.20
151.40
11B. 00
9.80
21.00
2.60
174.70
137.00
11.00
24.00
2.70
17(1.36
137.40
9.34
21.32
2.29
TOTAL DRAINAGE AREA OF LAKE =
SUM OF SUB-DRAINAGE AREAS =
MEAN MONTHLY FLOWS AND DAILY FLOWS
TRIBUTARY MONTH YEAR
0905A1
0905A2
8
9
10
11
12
1
?
3
4
5
6
7
a
9
10
8
9
10
11
12
1
?
3
4
5
6
7
8
9
10
72
72
72
72
72
73
73
73
73
73
73
73
73
73
73
72
72
72
72
72
73
73
73
73
73
73
73
73
73
73
MEAN FLOW DAY
126.00
74.00
119.00
282.00
456.00
338.00
463.00
276.00
419.00
303.00
168.00
163.00
93.00
91.00
73.00
105.00
64.00
96.00
228.00
368.00
274.00
374.00
238.00
361.00
245.00
136.00
132.00
75.00
74.00
59.00
19
28
18
8
5
2
29
2?
19
28
18
8
5
2
29
22
113.00
68.00
532.00
385.00
265.00
229.00
66.00
78.00
94.00
59.00
458.00
333.00
215.00
185.00
53.00
63.00
SUMMARY
95.10
95.15
TOTAL FLOW IN
TOTAL FLOW OUT
2048.19
2048.19
FLOW DAY
FLOW DAY
FLOW
12
144.00
12
116.00
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TRIBUTARY FLOW INFORMATION FOR CONNECTICUT
11/26/74
LAKE CODE 0905
HANOVER POND
MEAN MONTHLY FLOWS AND DAILY FLOWS
TRIBUTARY MONTH YEAR MEAN FLOW DAY
0905*11
0905C1
0905ZZ
8
9
10
11
12
1
?
3
4
5
6
7
8
9
10
8
9
10
11
12
1
2
3
4
5
6
7
a
9
10
8
9
10
11
1?
1
?
3
4
5
6
7
8
9
10
72
72
72
72
72
73
73
73
73
73
73
73
73
73
73
72
72
72
72
72
73
73
73
73
73
73
73
73
73
73
72
72
72
72
72
73
73
73
73
73
73
73
73
73
73
6.00
2.70
6.50
15.00
25.00
18.00
25.00
12.00
18.00
16.00
9.10
8.80
5.00
5.00
3.90
14.00
6.70
15.00
35.00
57.00
42.00
58.00
24.00
36.00
38.00
21.00
20.00
12.00
11.00
9.10
1.40
0.58
1.50
3.60
5.70
4.30
5.80
2.40
3.60
3.80
?. 10
2.10
1.20
1.10
19
28
18
8
5
2
29
22
19
28
18
8
5
2
29
22
19
28
18
8
5
2
29
22
FLOW DAY
5.40
2.50
23.00
16.00
14.00
12.00
3.60
4.20
12.00
6.20
46.00
33.00
33.00
29.00
8.20
9.70
1.20
0.54
4.60
3.30
3.40
2.90
0.60
1.00
FLOW DAY
FLOW
12
7.80
12
18.00
12
1.80
0.90
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APPENDIX B
PHYSICAL and CHEMICAL DATA
-------
ST3HET RETRIEVAL. PATE 74/11/P6
090501
41 31 16.0 07? 49 38.0
HANOVEtf PQNO
09 CONNECTICUT
DATE
FROM
TO
72/05/29
72/0«/03
72/10/04
TIME DEPTH
OF
DAY FEET
15 50 0000
15 50 0008
17 00 0000
17 00 0004
0« 20 0000
ca 20 0004
00010
WATER
TFMP
CENT
18.7
16.8
?1.5
14.8
00300
00
MG/L
11.0
n.o
7.8
10.6
00077 00094
TRANSP CNDUCTVY.
SECCHI FIELD
INCHES MICROMHO
54
?4
40
?50
360
250
210
280
280
11EPALES
3
00400
PH
SU
7.40
7.30
7.30
7.00
7.75
7.25
00410
T ALK
CAC03
MG/L
54
59
62
79
59
57
2111202
0009
00630
NO?t>N03
N-TOTAL
MG/L
1.300
1.300
1.120
0.420
2.040
1.960
EEET DEPTH
00610
NH3-N
TOTAL
MG/L
0.220
0.330
0.180
0.110
0.400
0.540
00665
PHOS-TOT
MG/L P
0.317
0.280
0.198
0.032
0.403
0.446
00666
PHOS-DIS
MG/L P
0.203
0.175
0.149
0.028
0.356
0.382
3-?21 7
DATE TIME DE^TH CMLRPHYL
DAY FEET
TO
72/05/?9 15 50 0000
72/03/03 17 00 0000
72/10/04 Oft 20 0000
13.U
11.0 J
32.5 J
J VALUE KNOWN TO BE
IN ERROR
-------
APPENDIX C
TRIBUTARY and WASTEWATER
TREATMENT PLANT DATA
-------
STORE! RETRIEVAL DATE 74/11/26
0905A1 0903A4
41 31 00.0 072 49 30.0
QUINNIPAC RIVER
09 7.5 MERIUEN
0/HANOVER POND
ST HWY 70 8RDG
11EPALES 2111204
4 0000 FEET
DEPTH
DATE
FROM
TO
7P/08/19
72/10/02
7P/10/31
73/03/18
73/04/08
73/05/05
73/06/12
73/08/29
73/09/2?
TIME DEPTH
OF
DAY FEET
15 55
10 15
13 30
14 00
10 40
21 00
07 10
08 30
00630
N02&N03
N-TOTAL
MG/L
0.540
2.090
1.580
0.580
0.560
0.960
1.200
1.920
1.700
00625
TOT KJEL
N
MG/L
1.000
1.450
1.225
0.650
0.807
1.260
2.500
1.300
1.300
00610
NH3-N
TOTAL
MG/L
0.126
0.390
0.420
0.100
0.069
0.290
0.300
0.380
0.540
00671
PHOS-DIS
ORTHO
MG/L P
0.220
0.379
0.400
0.054
0.052
0.170
0.150
0.690
0.320
00665
PHOS-TOT
MG/L P
0.265
0.480
0.540
0.120
0.120
0.260
0.270
0.820
0.500
-------
STORET RETRIEVAL OATF 74/11/26
DATE
FROM
TO
72/08/19
72/10/02
72/10/31
72/1 1/21
73/03/1H
73/04/08
73/05/05
73/06/12
73/08/29
73/09/2?
TIME 1
OF
DAY 1
12 00
16 00
09 40
11 35
13 00
14 35
11 00
?1 25
07 15
08 00
FEET
0905A2 LS0905A2
41 31 30.0 07? 50 30.0
QUINNIPIAC RIVER
09 7.5 MERIDEN
I/HANOVER POND
OREGON RO 8RDG
11EPALES 3111204
4 0000 FEET
DEPTH
0630
&N03
OTAL
G/L
1.825
0.670
1.500
0.700
0.580
0.580
0.950
1.540
1.900
1.740
00625
TOT KJEL
N
MG/L
1.000
1.550
1.620
0.725
0.955
0.420
1.600
1.320
1.250
1.760
00610
NH3-N
TOTAL
MG/L
0.530
0.620
O.H10
0.260
0.066
0.088
0.220
0.252
0.510
0.540
00671
PHOS-DIS
ORTHO
MG/L P
0.490
0.380
0.420
0.074
0.054
0.054
0.180
0.240
1.000
0.415
00665
PHOS-TOT
MG/L P
0.610
0.485
0.550
0.145
0.105
0.105
0.250
0.310
1.150
0.625
-------
STORET RETRIEVAL DATE 74/11/26
0905A3 LS0905A3
41 32 00.0 072 52 00.0
QUINNIPIAC RIVER
09 7.5 MERIDEN
T/HANOVER POND
WESTERN CHESHIRE ST BROG BELOW STP
11EPALES 2111204
4 0000 FEET DEPTH
DATE
FROM
TO
72/08/19
72/10/02
73/03/18
73/04/08
73/05/05
73/06/12
73/08/29
73/09/22
TIME DEPTH
OF
DAY FEET
12 00
16 10
14 30
14 30
10 50
21 05
07 20
08 15
00630
N02&N03
N-TOTAL
MG/L
0.660
0.512
0.600
0.580
1.020
1.640
1.700
1.600
00625
TOT KJEL
N
MG/L
1.100
2.150
0.420
0.850
3.400
2.200
0.960
7.600
00610
NH3-N
TOTAL
MG/L
0.590
0.920
0.083
0.094
0.280
0.380
0.580
0.399
00671
PHOS-OIS
ORTHO
MG/L P
0.195
0.155
0.056
0.054
0.189
0.350
0.760
0.510
00665
PHOS-TOT
MG/L P
0.320
0.802
0.110
0.110
0.260
0.430
0.860
3.400
-------
STORE! RETRIEVAL DATE 74/11/36
0905A4 LS0905A4
41 32 00.0 07? 52 30.0
QUINNIPIAC RIVER
09 7."5 MERIDEN
T/H4NOVER PONO
BLACKS RD BRDG ABOVE CHESHIRE STP
11EPALES 2111204
4 0000 FEET DEPTH
DATE
FROM
TO
72/08/19
72/10/02
7P/10/31
72/11/21
73/03/18
73/04/08
73/05/05
73/06/12
73/08/29
73/09/22
TIMF DEPTH
OF
DAV FEET
11 40
16 ?0
10 00
11 30
14 15
14 15
10 45
21 10
07 30
08 10
00630
N02&N03
N-TOTAL
MG/L
0.700
0.690
0.330
0.720
0.610
0.610
0.980
1.560
1.680
1.700
00625
TOT KJEL
N
MG/L
1.000
1.150
1.500
0.500
0.500
0.7*0
2.800
2.000
1.760
2.300
00610
NH3-N
TOTAL
MG/L
0.440
0.483
O.«80
0.115
0.126
0.133
0.270
0.750
0.440
0.860
00671
PHOS-DIS
ORTHO
MG/L P
0.315
0.350
0.060
0.080
0.056
0.058
0.150
0.480
0.670
0.860
00665
PHOS-TOT
MG/L P
0.430
0.470
0.595
0.135
0.110
0.110
0.240
0.590
0.770
1.000
-------
STORE! RETRIEVAL DATE 74/11/26
0905A5 LS0905A5
41 34 00.0 07? 53 00.0
QUINNIPIAC RIVER
09 7.5 SOUTHINGTON
T/HANOVER
ST HWY 66 BROG BELOW SOUTHINGTON STP
11EPALES 2111204
4 0000 FEET DEPTH
DATE
FROM
TO
72/08/19
72/09/23
72/10/29
72/11/19
72/12/26
73/01/18
73/02/10
73/03/20
73/04/12
73/04/22
73/05/30
73/08/14
73/09/05
00630 00625
TIME DEPTH N02&N03 TOT KJEL
OF N-TOTAL N
DAY FEET
09
09
10
09
13
13
12
08
09
12
09
11
50
45
00
30
00
00
00
00
00
30
20
35
MG/L
0
0
0
0
1
1
1
1
0
0
0
1
1
.530
.373
.830
.480
.100
.600
.520
.200
.860
.870
.840
.480
.400
MG/L
1.
1.
2.
0.
0.
1.
0.
0.
0.
1.
1.
2.
3.
100
750
730
720
850
380
750
950
460
510
380
500
500
00610 00671 00665
NH3-N PHOS-DIS PHOS-TOT
TOTAL ORTHO
MG/L
0
0
1
0
0
0
0
0
0
0
0
0
1
.660
.740
.500
.390
.420
.730
.410
.550
.132
.189
.550
.620
.050
MG/L
0.
0.
0.
0.
0.
0.
0.
0.
0.
0.
0.
0.
0.
p
394
135
430
200
130
340
220
280
168
168
290
520
750
MG/L P
0.345
0.840
0.290
0.240
0.450
0.300
0.375
0.220
0.230
0.420
0.620
0.945
-------
STORET RETRIEVAL DATE 74/11/26
0905A6 LS0905A6
41 34 00.0 07? 53 30.0
QJINNIPIAC RIVER
09 7.5 SOUTHINGTON
T/HANOVEW POND
OLD TURNPIKE RD BRDG ABV SOUTHINGTON STP
11EPALES 2111204
4 0000 FEET DEPTH
DATE
FROM
TO
72/08/19
72/09/23
72/10/29
72/12/2*
73/01/18
73/02/10
73/03/20
73/04/12
73/04/2?
73/05/30
73/08/14
73/09/05
00630 00625
TIME DEPTH NO?&N03 TOT KJEL
OF N-TOTAL N
DAr FEET
10
09
10
13
12
1?
09
09
12
09
11
15
15
30
00
00
00
25
15
20
40
50
MG/L
1
0
0
1
1
1
1
0
0
0
1
1
.440
.830
.830
.100
.840
.720
.440
.910
.9?0
.940
.120
.220
MG/L
0.
0.
0.
0.
0.
0.
0.
0.
0.
0.
1.
1.
700
350
980
630
370
560
230
360
810
870
470
050
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.
367
110
086
168
198
300
050
05P
128
410
072
042
MG/L
0.
0.
0.
0.
0.
0.
0.
0.
0.
0.
0.
0.
p
189
303
176
095
168
154
240
190
190
210
028
027
MG/L P
0.300
0.410
0.294
0.189
0.250
0.220
0.310
0.240
0.250
0.300
0.068
0.165
-------
STORE! RETRIEVAL DATE 74/11/26
090581 LS090561
41 32 00.0 072 49 30.0
SODOM HROOK
09 7.5 MERIDEN
T/HANOVER POND
COE AVE BROG
11EPALES 2111204
4 0000 FEET
DEPTH
DATE
FROM
TO
7P/08/19
72/09/30
72/10/31
72/11/21
73/03/18
73/04/08
73/05/05
73/06/12
73/08/29
73/09/22
00630 00625
TIME DEPTH N02&N03 TOT KJEL
OF N-TOTAL N
DAY FEET
11
15
09
11
14
13
13
10
20
07
09
35
45
25
10
10
15
20
30
00
05
55
MG/L
0
0
0
1
0
0
1
0
0
0
0
.890
.900
.820
.100
.970
.990
.000
.910
.910
.750
.810
MG/L
0.
0.
0.
0.
0.
0.
1.
1.
1.
0.
1.
275
450
365
500
380
420
500
380
200
460
320
00610 00671 00665
NH3-N PHOS-DIS PHOS-TOT
TOTAL ORTHO
MG/L
0.
0.
0.
0.
0.
0.
0.
0.
0.
0.
0.
063
067
048
180
033
037
076
056
160
050
120
MG/L
0.
0.
0.
0.
0.
0.
0.
0.
0.
0.
0.
P
015
015
014
023
015
015
018
023
039
025
042
MG/L P
0.039
0.037
0.040
0.040
0.035
0.035
0.037
0.040
0.080
0.060
.0.050
-------
STORET RETRIEVAL DATE 74/11/26
0905C1 LS0905C1
41 32 00.0 072 49 30.0
HARBOR BROOK
09 7.5 MERIDEN
T/HANOVER POND
COE AVE HRDG
11EPALES 2111304
4 0000 FEET
DEPTH
DATE
FROM
TO
72/08/19
72/10/02
72/10/31
73/03/18
73/04/08
73/05/05
73/06/0?
73/08/29
73/09/22
TIME DEPTH
OF
DAY FEET
11 30
15 50
09 15
14 00
13 30
10 33
08 30
07 00
07 50
00630
N02S.N03
N-TOTAL
MG/L
0.450
0.650
0.930
1.060
1.080
1.000
1.100
0.830
1.200
00625
TOT KJEL
N
MG/L
0.500
1.000
0.440
1.050
0.720
0.660
2.730
0.540
2.800
00610
NH3-N
TOTAL
MG/L
0.105
0.158
0.064
0.066
0.069
0.061
0.870
0.060
0.150
00671
PHOS-DIS
ORTHO
MG/L P
0.056
0.039
0.04P
0.063
0.063
0.051
0.176
0.168
0.075
00665
PHOS-TOT
MG/L P
0.110
0.101
0.105
0.180
0.170
0.035
0.270
0.260
0.170
-------
STORE! RETRIEVAL DATE 74/11/26
0905D1 LS0905D1
41 34 00.0 072 53 30.0
TENMILE RIVER
09 7.5 SOUTHINGTON
T/HANOVER POND
OLD TURNPIKE RD BRDG ABV SOUTHINGTON STP
11EPALES 2111204
4 0000 FEET DEPTH
DATE
FROM
TO
72/08/19
72/09/23
72/10/28
7P/11/19
72/12/26
73/01/18
73/02/10
73/03/20
73/04/12
73/04/2?
73/05/30
73/08/14
73/09/05
00630 00625
TIME DEPTH N02&N03 TOT KJEL
OF N-TOTAL N
DAY FEET
09
09
10
09
13
13
12
09
09
12
09
11
55
30
15
00
30
00
15
20
20
25
30
45
MG/L
0
0
1
1
1
1
1
1
0
0
0
1
1
.500
.550
.100
.060
.040
.500
.300
.100
.740
.750
.740
.920
.520
MG/L
1
0
0
0
0
0
0
0
0
0
0
1
1
.400
.250
.450
.260
.440
.310
.220
.230
.360
.330
.440
.260
.980
00610 00671 00665
NH3-N PHOS-OIS PHOS-TOT
TOTAL ORTHO
MG/L
0.
0.
0.
0.
0.
0.
0.
0.
0.
0.
140
085
095
072
086
087
069
029
030
037
0.052
0.
0.
042
092
MG/L
0.
0.
0.
0.
0.
0.
0.
0.
0.
0.
0.
1.
1.
p
029
015
015
017
019
016
015
016
012
015
017
500
500
MG/L P
0.029
0.031
0.050
0.030
0.044
0.042
0.040
0.030
0.025
0.030
0.035
1.880
1.800
-------
STORET RETRIEVAL DATE 74/11/37
090551 AS090551 P002000
41 32 00.0 072 52 00.0
CHESHIRE
09 7.5 MERIDEN
T/HANOVEtf POND
QUINNIPIAC RIVER
11EPALES 2141204
4 0000 FEET DEPTH
DATE
FROM
TO
73/01/24
CPITl-
73/01/24
73/02/15
CP-
73/02/15
73/03/08
cpm-
73/03/08
73/03/29
CP(T>-
73/03/29
73/04/26
CP-
73/04/26
73/05/16
CP(T)-
73/05/16
73/06/Ofl
CP(T)-
73/06/OR
73/03/09
CP < T > -
73/08/09
73/09/13
CPITl-
73/09/13
73/10/04
CP-
73/10/04
73/11/14
CPIT1-
73/1 1/14
73/11/27
CP-
73/11/27
00630 00625 00610 00671 00665 50051 50053
TIME DEPTH N02&N03 TOT KJEL NH3-N PHOS-OIS PHOS-TOT FLOW CONDUIT
OF N-TOTAL M TOTAL ORTHO RATE FLOW-MOD
DAY FEET MG/L MG/L MG/L MG/L P MG/L P INST MGD MONTHLY
07
12
07
12
07
12
07
12
07
1?
07
12
07
12
07
12
07
1?
07
12
07
12
07
12
30
00
30
30
30
30
30
30
30
00
30
30
30
30
30
30
30
00
30
30
30
30
30
10
21
11
2
11
2ft
23
15
19
28
28
23
25
.200
.200
.100
.200
.000
.600
.200
.000
.200
.000
.000
.000
2.100 0
1.470 1
0
1.010 1
4.200 0
0
2.310 0
0.4PO 0
0
0.350 0
O.SOOK 0
0.500K 0
.560
.050
.330
.010
.210
.280
.253
.056
.198
.140
.170
.175
7.700
5.200
8.200
6.250
8.400
6.900
5.900
6.600
0.170
9.400
8.400
8.375
8.100
5.600
8.300
6.800
9.900
7.200
6.100
a. 100
8.400
9.800
a. 550
8.800
0
0
0
0
0
0
0
0
0
0
0
0
.237
.241
.230
.243
.214
.246
.243
.217
.222
.230
.216
.225
0.256
0.260
0.240
0.235
0.225
0.252
0.250
0.234
0.230
0.230
0.225
0.225
K VALUE KNOWN TO BE
LESS THAN INDICATED
-------
STORET RETRIEVAL DATE 74/11/27
00630
DATE TIME DFPTH lM02f.N03
FROM OF N-TOTAL
TO DAY FEET MG/L
73/12/06 07 30
CP
-------
STORET RETRIEVAL DATE 74/11/27
090552 TF090552 P022000
41 34 00.0 072 53 00.0
SOUTHINGTON
09 7.5 SOUTHINGTON
T/HANOVER POND
GIUINNIPIAC RIVER
11EPALES 2141204
4 0000 FEET DEPTH
00630 00625
DATE TIME DEPTH N05&N03 TOT KJEL
FROM OF N-TOTAL
TO DAY FEET MG/L
73/01/03 07 30
CP(T)-
73/01/03 16 30
73/02/21 00 00
CP(T>-
73/02/21 07 30
73/04/03 07 00
CP(T>-
73/04/03 15 00
73/05/16 00 00
CP < T) -
73/05/16 08 00
73/06/10 00 00
CP(T)-
73/06/10 07 00
73/07/23 00 00
CP(T)-
73/07/23 07 30
73/08/30 00 00
CP(T)-
73/08/30 07 30
73/09/26 00 00
CP(T>-
73/09/26 07 00
73/10/25 07 00
CP(T)-
73/10/25 15 00
73/11/29 00 00
CP(T)-
73/11/29 07 00
74/01/02 07 00
CP(T>-
74/01/02 15 00
1.560
0.770
0.620
1.200
2.700
1.300
0.880
0.880
1.920
N
MG/L
12.000
14.700
13.800
0.700 13.800
15.000
17.000
24.000
1.320 20.000
19.500
30.000
15.800
00610 00671 00665 50051 50053
NH3-N PHOS-DIS PHOS-TOT FLOW CONDUIT
TOTAL ORTHO RATE ' FLOW-MOD
MG/L MG/L P MG/L P INST MGD MONTHLY
3.800
3.350
8.800
17.000
2.300
3.300
4.300
7.400 5.600 7.400 3.020
4.600 3.000 3.900 4.360
4.520
3.000 3.000 4.200 4.450 5.000
2.450 3.900 5.250 4.460
4.600 2.900 4.200 4.480 4.570
5.900 4.080 5.650 3.930 4.400
7.000 4.200 6.100 3.700 3..730
6.600 3.260 3.320
5.400 6.600 3.240 3.120
3.040
4.300 5.600 3.040 2.990
3.710
------- |