Annapolis Field Office
Region III
Environmental Protection Agency
1967 Data Report
Number 15>
WATER QUALITY SURVEY
OF THE
PATUXENT RIVER
Staff
James W. Marks, Chief, Laboratory Section
Orterio Villa, Jr., Chemist
Anna R. Favorite, Statistician
Evelyn P. McPherson, Technician
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i
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TABLE OF CONTENTS
Page
I INTRODUCTION 1
II STATION LOCATIONS 5
III SURVEY RESULTS 8
IV MAP appendix i
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I INTRODUCTION
A. Purpose and Scope
During the year of 196? the Annapolis Field Office, Region
III, Environmental Protection Agency, formerly the Chesapeake
Technical Support Laboratory conducted four separate intensive
surveys of the Patuxent River Basin in cooperation with the
State of Maryland, Department of Water Resources, Water Quality
Investigation and Analysis Division. The purpose of these
surveys was to aid in model verification and to determine the
extent of BOD loading to the river.
B. General Remarks
The four intensive surveys were performed during the months
of March, July-August, September and October. During each of the
surveys the major sewage treatment plants were also sampled on a
eight hour composite basis. The analysis presented in this report
were performed by the Annapolis Field Office with the exception
of a special run made on September 7th. The DO and BOD on this
special run were performed by the Maryland Department of Water
Resources.
C. Sampling Procedures
Samples for chemical analysis were obtained by dipping a
plastic bucket into the river water with a minimum of agitation.
The water sample was then transferred to a plastic one-gallon
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2
cubitainer. Dissolved oxygen (DO) samples were obtained by siphon-
ing from the bucket through plastic tubing extended to the bottom
of a conventional 300 ml DO bottle. The bottle was overfilled
twice without excessive agitation and the DO fixed immediately.
Temperature was measured in the dipped bucket immediately after
sampling. All samples were stored on ice. Analysis was started
immediately on return to the Annapolis Field Office, generally
within two hours of sampling.
D. Measured Parameters and Analytical Methods
1. Water temperature was determined using a mercury
thermometer inserted into the sample container immediately upon
collection.
2. Total Phosphorus
Reference: Menzel, D.W. and Corwin, N., 1965- The
Measurement of Total Phosphorus in Seawater Based on the
Liberation of Organically Bound Fractions by Persulfate Oxidation.
Limonology and Oceanography, 10: 280-282.
Murphy, J. and Riley, J.P., 1962. A Modified Single
Solution Method for the Determination of Phosphate in Natural
Water. Analytica Chimica Acta, 27: 31-36.
Total Phosphorus was determined after persulfate oxidation
of the sample in an autoclave at 15 psi for 30 minutes. The re-
sultant ortho-phosphate was then determined colorimetrically as
the molybdenum-blue complex with the optical density measured
at 882 mM..
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-------
3
3. Inorganic Phosphorus
Reference: Murphy, J. and Riley, J.P., 1962. A Modi-
fied Single Solution Method for the Determination of Phosphate in
Natural Waters. Analytica Chimica Acta, 2?: 31-36.
Inorganic Phosphorus was determined colorimetrically as
the molybdenum-blue complex with the optical density measured at
882 mil.
1;. Total Kjeldahl Nitrogen
Reference: Standard Methods for the Examination of Water
and Wastewater, 12 ed., 1961?.
Total Kjeldahl Nitrogen includes ammonia and organic
nitrogen and was determined by the standard micro-kjeldahl pro-
cedure. The sample was digested in the presence of strong acid
to convert the organic nitrogen to ammonia. The ammonia was then
distilled, collected in boric acid solution, nesslerized and de-
termined colorimetrically.
£. Nitrate + Nitrite
Reference: A Manual of Sea Water Analysis, J.D.H.
Strickland and T.R. Parsons, 2nd. ed.. C'leen's Printer and
Controller of Stationery, Ottawa, Canada. 1965-
Nitrate plus nitrite was determined by the cadmium
reduction of nitrate to nitrite and subsequent diazotization with
sulphanilamide and N-(l-napthl)-ethylenediamine dihydrochloride.
-------
-------
k
The results were reported as nitrogen.
6. Turbidity was determined with a Hach photoelectric
nephelometer, calibrated in Jackson Turbidity Units.
7. Dissolved Oxygen
Reference: Standard Methods for the Examination of
Water and Wastewater, 12 ed., 196$.
Dissolved Oxygen was determined by the azide modi-
fication of the basic Winkler method with the titration done
potentiometrically with a Fisher automatic "titralyzer."
8. Biochemical Oxygen Demand
Reference: Standard Methods for the Examination of
Water and Wastewater, 12 ed., 1965.
The Biochemical Oxygen Demand was determined by the
azide modification of the basic Winkler method with the titration
done potentiometrically with a Fisher automatic "titralyzer." The
samples as received were diluted if necessary and transferred to
standard 300 ml BOD bottles in triplicate. One initial DO and
two final DO determinations were used throughout. Incubation
was started immediately at 20°C and continued for five days
after which they were titrated.
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II STATION LOCATIONS
PATUXENT RIVER
Station Number Location
5 Maryland Route k Bridge
7 Maryland Route 211; Bridge
8 John Hanson Highway, Route 5>0 and 301
9 Defense Highway Bridge, Maryland Route 3
10 Priest Bridge
11 Bridge behind Bowie Racetrack
12 Pennsylvania RR Bridge, Lemon Bridge Road
13 Duvall Bridge
Ik Baltimore-Washington Expressway Bridge
15 Maryland Route 198 Bridge
LI upstream from confluence with Patuxent River
L2 Maryland Route k?k Bridge
L3 Bridge upstream of Woodwardville
Llj. Old Forge Bridge
L5 Maryland Route 198, Simmons Bridge
L6 Baltimore-Washington Expressway
L6A Maryland Route 32 Bridge, Dorsey Run
L? U.S. Route 1 Bridge, Savage
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PATUXENT RIVER SPECIAL RUN
Brock Bridge
Swamp drainage below Bowie STP
Priest Bridge
Above sanitary landfill
Below Bowie STP
Below Bowie STP
Bowie Effluent at river
Trib to Patuxent above Bowie
Above Bowie STP
Above Bowie STP
-x- Patuxent Wildlife Refuge
-x- Patuxent Wildlife Refuge
Below Parkway
Below Parkway
Parkway STP Effluent
Above Parkway STP
Above Parkway STP
-» Patuxent Wildlife Refuge
* Patuxent Wildlife Refuge
Same as Duvall Bridge - Station 13
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SEWAGE TREATMENTS PLANTS
Andrews Air Force Base - Plant # 3
Bowie - Bel Air
Fort Meade - Plant # 1
Fort Meade - Plant # 2
Laurel - Parkway
Maryland City
Maryland House of Correction
Patuxent Water Treatment Plant
Savage
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— US ROUTE I BRIDGE SAVAGC — L?
^^- - SAVAGE
BROCK BRIDGE
^-MARYLAND ROUTE 32 BRIDGC OORSEY RUN-L6A
MARYIAND HOUSE OF CORRECTION
— (ORT MEADE- PLANT NO 2
MAS*! ANT BObTE 198 SIMMONS BR.DGE - L 5
IS-MABYLANO ROUTE t96 BRIDGI
MARYLAND CTY
.ALTiMORE- WASHINGTON EXPRESSWAY BRIDGE
AflOVt PARKWAY ST
LAUREi. - PARK
PAflKWAY STP ETFl
13-0
I2-PENN5YLVANIA RR BRIDGE LEMON
TRlfl TO PATUXENT
11 -BRIDGE BEHIND BOWiE RAi
ABOVE BOW
BOWIE EfFLUEN' AT
BELOW BO1
6-DEFENSE HIGHWAY BRIDGE . UARYLAN
ABOVE SANITARY L
ANDREWS AIR FORCE BASE -PLANT NO
iRT MEADE - PLANT NO i
MARYLAND ROUTE 424 B*»lDGE - LZ
'ATUXENT WATER TREATMENT PLANT
EAM FROM CONFLUENCE WITH PATUXEMT
'RlEST BRIDGE- 10
JOHN HANSON HIGHWAY, ROUTE 50 AND 3Oi — 8
LLE
.RYLAND ROUTE 214 BRIDGE - 7
MARYLAND ROUTE 4 BRIDGE-5
PATUXENT RIVER SURVEY
1967
SCALE IN MILtS
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Annapolis Field Office
Region III
Environmental Protection Agency
1968 Data Report
Number 16
WATER QUALITY SURVEY
OF THE
PATUXENT RIVER
Staff
James W. Marks, Chief, Laboratory Section
Orterio Villa, Jr., Chemist
Anna R. Favorite, Statistician
Evelyn P. McPherson, Technician
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-------
TABLE OF CONTENTS
Page
I INTRODUCTION 1
II STATION LOCATIONS 5
III SURVEY RESULTS 10
IV MAP appendix i
------- OCR error (C:\Conversion\JobRoot\00000AEN\tiff\2000V634.tif): Saving image to "C:\Conversion\JobRoot\00000AEN\tiff\2000V634.T$F.T$F" failed.
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I INTRODUCTION
A. Purpose and Scope
During the year of 1968 the Annapolis Field Office, Region
III, Environmental Protection Agency, formerly the Chesapeake
Technical Support Laboratory in cooperation with the State of
Maryland, Department of Water Resources, Water Quality Inves-
tigations and Analysis Division conducted surveys of the
Patuxent River, including the estuary portion. Twenty-six
sewage treatment plants were also included. The purpose of the
surveys was to upgrade data from previous years, establish a
model verification of the estuary portion of the river and to
determine the stress placed on the river by the sewage treat-
ment plants discharging into the river directly or its
tributaries.
B. General Remarks
The Patuxent Estuary was sampled monthly between April and
September with an intensive survey during July. The fresh water
portion of the river was sampled during the July intensive by
the Maryland Department of Water Resources. The sewage treat-
ment plants were also sampled during the July intensive on an
eight-hour composite basis.
C, Sampling Procedures
Samples for chemical analysis were obtained by dipping a
plastic bucket into the river water with a minimum of agitation.
-------
-------
The water sample was then transferred to a plastic one-quart
cubitainer. Dissolved oxygen (DO) samples were obtained by
siphoning from the bucket through plastic tubing extended to
the bottom of a conventional 300 ml DO bottle. The bottle was
overfilled twice without excessive agitation, and the DO fix:ed
immediately. Temperature was measured in the dipped bucket
immediately after sampling. The pH of the sample was determined
immediately using a portable pH meter. All samples were stored
on ice. Analysis was started immediately on return to the
Annapolis Field Office, generally within two hours of sampling.
D. Measured Parameters and Analytical Methods
1. Water temperature was determined using a mercury thermo-
meter inserted into the sample container immediately upon collection.
2. Water temperature was also read from a Beckman Salinometer.
3. Conductivity was read from a calibrated Beckman Salinometer.
k- Salinity was determined with a calibrated Beckman Salino-
meter.
5. The pH measurements were made with a field pH meter.
6. Light extinction, in inches, was made with a 12 " (30 cm)
white secchi disk.
7. Total Phosphorus
Reference: Menzel, D.W. and Corwin, N., 1965- The
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-------
3
Measurement of Total Phosphorus in Seawater Based on the Liberation
of Organically Bound Fractions by Persulfate Oxidation. Limono-
logy and Oceanography, 10: 280-282.
Murphy, J. and Riley, J.P., 1962. A Modified Single Solution
Method for the Determination of Phosphate in Natural Waters. Analytica
Chimica Acta, 2?: 31-36.
Total Phosphorus was determined after persulfate oxidation of
the sample in an autoclave at 15> psi for 30 minutes. The resultant
ortho-phosphate was then determined colorimetrically as the molybde-
num-blue complex with the optical density measured at 882m|J..
8. Total Kjeldahl Nitrogen
Reference: Standard Methods for the Examination of Water
and Wastewater, 12 ed., 1965-
Total Kjeldahl Nitrogen includes ammonia and organic
nitrogen and was determined by the standard micro-kjeldahl procedure.
The sample was digested in the presence of strong acid to convert
the organic nitrogen to ammonia. The ammonia was then distilled,
collected in boric acid solution, nesslerized and determined color-
imetrically.
9- Nitrate + Nitrite
Reference: A Manual of Sea Water Analysis, JoD.H. Strick-
land and T.R. Parsons, 2nd ed.. Queen's Printer and Controller Sta-
tionery, Ottawa, Canada. 1965.
Nitrate plus nitrite nitrogen was determined by the cadmium
-------
-------
h
reduction of nitrate to nitrite and subsequent diazotization with
sulphanilamide and N-(l-naphthyl)-ethylenediamine dihydrochloride.
The results were reported as nitrogen.
10. Ammonia
Reference: Standard Methods for the Examination of
Water and Wastewater, 12 ed., 1965.
The water samples as received were adjusted to a pH of
7.2-7.1|- An aliquot portion was distilled collecting the dis-
tillate in 2% boric acid. An aliquot of the distillate was ness-
lerized and read on a spectrophotometer at lj.25 mH-. The results
were calculated as NHo-N.
11. Turbidity was determined with a Hach photoelectric
nephelometer, calibrated in Jackson Turbidity Units.
12. Chlorophyll a
Reference: A Manual of Sea Water Analysis, J.D.H.
Strickland and T.R. Parsons, 2nd. ed., Queen's Printer and Con-
troller of Stationery, Ottawa, Canada, 1965.
Chlorophyll a_ was determined by extraction of millipore
filtered samples in 90% acetone and read spectrophotometrically.
13- Dissolved Oxygen
Reference: Standard Methods for the Examination of
Water and Wastewater, 12 ed., 1965.
Dissolved Oxygen was determined by the azide modifi-
cation of the basic Winkler method with the titration done po-
tentiometrically with a Fisher automatic "titralyzer."
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II STATION LOCATIONS
PATUXENT ESTUARY
Station Number
Location
El
E2
E3
E6
E6A
E7
E8
E9
E10
Ell
E11A
E12
E13
Elk
Route 50 Bridge
Queen Anne's Bridge
Bell's Junk Yard
Trailer Court
Wayson's Corner, Route k Bridge
Western Branch
Mouth of Western Branch
Middle of Jug Bay-
Mouth of Lyon's Creek
Nottingham
Lower Marlboro, opposite wharf
High Power Lines
Halfway between Trueman Point and Deep Landing
-x-Pepco Canal
500 yards east of PEPCO Canal
Chalk Point
Benedict Bridge Channel
Sheridan Point, Buoy 21
";;~ Not included on map because of scatter
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PATUXENT RIVER INTENSIVE
Station Number Location
6 Queen Anne's Bridge
8 Route £0 Bridge
9 Defense Highway Bridge, Route 3
10 Priest Bridge
10A 100 feet upstream Bowie-Bel Air STP discharge
11 Bridge, Bowie Racetrack
12 Pennsylvania Railroad Bridge, Lemon Bridge Road
13 Wildlife Refuge, Duvall Road
13B Wildlife Refuge, off Riva Road
ill Baltimore- Washington Expressway Bridge
llj.C Upstream Fairview Trailer Park, Brock Bridge Road
15 Maryland Route 198 Bridge
16 Below Howard T. Duckett Dam (Rocky Gorge Dam)
LI Upstream from confluence with Patuxent River
L2 Maryland Route Ifik Bridge
L2A Towsers Bridge, Waugh Chapel Road
L2B Old Washington 301;, Annapolis right of way
L3 Woodwardville Bridge
Ik Old Forge Bridge
L5 Simmons Bridge, Route 198
L6 Baltimore-Washington Expressway Bridge
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Station Number Location
L6A Maryland Route 32, Dorsey Run
L7 U.S. Route 1 Bridge, Savage
L7A Brock Bridge Road
L7B U.S. Route 1, Hammond Branch
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SEWAGE TREATMENT PLANTS
Bowie - Bel Air
"" Elkton
~;;~ Emmitsburg
* Fort Detrick
Fort Meade
";;" Frederick
--Holly Hill
Jessup
Laurel
Maryland City
* Meadowview
-;;""Middletown
-;;- Mount Saint Mary' s Lagoon
-x- Myersville
"- New Market
* New Windsor
NSA
Parkway
Patuxent
"" Perryville
-;;~ Rising Sun Lagoon
Not included on map because of scatter
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SEWAGE TREATMENT PLANTS
Savage
Taneytown
Union Bridge
Victor Cullen
Westminister
Not included on map because of scatter
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Ill SURVEY RESULTS
1968
PATUXENT RIVER INTENSIVE
ANNAPOLIS FIELD OFFICE
Saj'rle
V - i"er
6. K) 1 .14
161 4
17"'
1617
1914
68071515
Iol5
1728
1816
1915
68071516
16 16
1729
1819
1916
68071517
1617
1730
1820
1917
68071518
1618
1731
1821
1918
68071519
1619
1732
1822
1919
68071520
1620
1733
1823
1920
Date
Sarple
Taken
'-1
7-16
'-li'
7-lfi
'-19
7-1$
7-16
7-17
7-18
7-19
7-15
7-16
7-17
7-18
7-19
7-15
7-16
7-17
••-16
7-19
i'-l ;
7-16
,•-17
7-18
•7-19
(-13
7-16
7-17
."-18
(-19
7-15
7-16
V-l
,'-16
7-19
Total P NO ,+NO,
PO TKN
Time Sample Taken mg/1 rrig 1 ;•;
Station 6 - Queen Anne's Bridge
Kin starting 0700 1.528 .826
2.018 .5U8
Run starting 1100 1.316 1.759
First run of the day . '(90 l.klk
1.965 .826
Station 8 - Route 50 Bridge
Run starting 0700 2.563 .981
2.071 1.5U2
Run starting 1100 1.421 1.598
First run of the day .776 .632
2.774 1-030
Station 9 - Defense Highway Bridge, Route
Run starting 0700 2.987 1.267
1.487 1.99U
Run starting 1100 1.737 1.868
First run of the day 1.049 1.7 64
3.123 1.401
Station 10 - Priest Bridge
Run starting 0700 4-208 1.752
2.177 1.329
Run starting 1100 2.411 1.190
First run of the day 1.916 l.UO?
4.329 .907
Station IDA - 100 feet upstream Bowie-Bel
Run starting 0700 2.918 .876
1.805 1-090
Run starting 1100 1.200 1.99k
First run of the day l.lUl 1.U37
3.489 .773
Station 11 - Bridge, Bowie Racetrack
Run starting 0700 3.126 .814
1.434 1.865
Run starting 1100 1-442 1.299
First run o ," tne day .833 1.868
3.194 .733
Station 12 - Pennsylvania Railroad Bridge
Run starting (700 2.95? 1.106
1.529 1.387
Rim starting 1100 2.a21 1.213
First run of the day l.OOii .948
2.490 2.186
mg/1
N03-N
2.03'^
' . OJj.4
1.093
2.114
1.284
1.03$
3
2.090
.975
1.364
2.290
1.001
.961
NH,
mg/1 N
.087
.259
.346
.029
.Ull
.596
.367
.252
.625
.793
.339
.713
Tur-
bidity
JTU
12
19
47
8.1
42
4l
6.9
40
38
6.7
4l
28
Chloro-
phyll a
Hg/1
8.25
4.$0
3.00
3-/5
Air STP discharge
2.532
.887
.898
2.590
.860
LA
, Lemon
2.532
.758
1.0U9
.288
.238
.221
.151
.202
.199
Bridge Road
.321,
.259
.610
6.6
46
24
4.7
48
19
4.3
47
16
0
4-50
'•11 • .inple;- *.aken •> Maryland State Department of Water Resources
LA Laf:cratory accident
-------
-------
16
Sample
Number
68071521
1621
173U
18214
1921
68071522
1622
1735
1825
1922
68071523
1623
1736
1826
1923
680715214
1621)
1737
1827
19214
68071525
1625
1738
1828
1925
68071526
1626
1735
1829
1926
Date
Sample
Taken
7-15
7-16
7-17
7-18
7-19
7-15
7-16
7-17
7-18
7-19
7-15
7-lb
7-17
7-lo
7-19
7-15
7-16
7-17
7-18
7-19
7-15
7-16
7-17
7-18
7-19
7-15
7-16
7-17
7-18
7-19
Total P
Time Sample
Station
Run starting
Run starting
First run of
Station
Run starting
Rim starting
First run of
Station
Run starting
Run starting
First run of
Station
Run starting
Run starting
First run of
Station
Run starting
Run starting
First run of
Station
Run starting
Run starting
First run of
Taken
13 - Wildlife
0700 c-
1100
the- d,i,\
1JB - Wildlif
07 uo 5
HOC
thn da; •
3
14 - Baltimor
C7GC
HOC
the day
PO
4,
Refuge
-Tk7
• 1 t:i
• ~j *,3
.373
.9-1
e Rr-.i.,
.071)
. 860
• or.)
-Oji.'
.646
TKN
r.g/1 'J
NO +NO, Tur- Ohloro-
mg/1 KU oidity phyll a
M-^-lf ng/1 H JTU M-g/'l
, Duvall Road
3.63 9
1.181
\ 33S
\ ,'01
1 • a 3
c, cff RI-.I
'- . " KO
1.567
_" . c c'
2.2.41
.I1'!
e-Washirigton Expre;;
.7^9
.136
.4!!
-438
-9<0
1.137
. 91)6
.55?
. U6o
.669
laO - Upstreai. Fairvier I'railer
0700 1
1100 3
the da;/ 1
4
15 - Maryland
0700
1100
the da;/
• 354
.37?
.968
.903
.077
Route
.061;
.067
. ~'uO
.083
.756
16 - Below Howard T.
0700
1
1100
the da ,-
.OljS
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.126
. -06
.Oil)
1.34»
.8 '!
3. ("4!
1.920
1.616
198 Bridge
.876
.90!
. i'93
.086
.808
DucKett Dam
.705
.516
.828
.626
.7kk
1.4? 2 ' , .1 6. .'5
. 7 '•>'<
.sr' 1.390 lu
Road
.C8i4 ,2.4! 6.1) o
.6-i? .71,-, 48
. ••".[ l.'5f 13
;.,. a;J Bridge
."736 .375 6.9 (,
. J>4~} .1)11 '4"'
.3^2 .26-. 16
Park, Brock Bridge Road
.561 .331 6 /5
.586 .1)39 36
.2" 2.91)9 19
.480 .26',' 7./4 1.^0
•U32 .555 jc
.31)0 . }<-/; 12
(Rocky (Jorge Dan)
.3?a .317 H 3.00
.U12 .56? 5.9
.266 .U78 1J
All samples taken b;r Maryland State liepartment e-~ Water Resourcec
-------
-------
17
Sample
Number
Date
Sample
Taken
Total P
PO, TKN
Time Sample Taken mg/1 mg/1 N
fl02+N03
mg/1
NO^-N
NH3
mg/1 N
Tur- Chloro-
bidity phyll a
JTU iig/1
Station LI- Upstream from confluence with Patuxent River
6v('/c527
162?
nuo
If1 JO
I'-5',
66071528
l6?8
17 i*l
l8jl
1926
6RU' 15? 9
1629
17a2
1832
1929
68lJ:l>30
1630
171*3
1833
1930
68or'l531
1631
17UU
1831*
1931
680^1532
1632
1715
1835
1932
68071J33
1633
171*6
1836
1933
7-1"
7-16
7-17
7-18
7-19
Rrn 'jta-tang 07CG 1.679 .975
2.177 1.355
Hun starting lluO 1.526 1.270
First run of the dav 1.118 .770
2.637 1.21*1*
.15?
.975
i.l*5o
Station I, 2 - Maryland Route 1*21* Bridge
'i-lj
(-16
7-17
7-16
7-19
7-15
7-16
7-17
7-18
7-19
7-15
7-16
7-17
7-18
7-19
7-15
7-16
7-17
7-18 •
7-19
7-15
7-16
7-17
7-18
7-19
7-15
7-16
7-17
7-18
7-19
Run starting 0700 1.757 1.1*B[*
1.922 2.755
Run starting 1100 1.356 LA
First run of the day .9^7 1.7U7
2.333 1.878
Station L ?A - Towsers Bridge^ Waugh
Run starting 0?00 1.21? 1.671
.956 1.11*7
Hun starting 1100 11.579 l.lUO
First run of the day .776 1.1(08
l*.960 5-727
Station L 2B - Old Washington JCU, A
Run starting 0700 1.71*0 1.795
2.973 LA
Run starting 1100 1.316 1.529
First run of the day 1.061 1.098
2.312 1.1*71
Station L 3 - Woodwardville Bridge
Run starting 0700 1.131* .671
3.239 li.732
Run starting 1100 9.368 .951*
First run of the day .326 .960
1.51*3 .91*2
Station L k - Old Forge Bridge
Run starting 0700 1.307 .91(1*
2.51*9 2.631
Run starting 1100 13.579 1.580
First run of the dav 2.259 .911*
15.678 .959
Station L 5 - Simmons Bridge, Route
Run starting 0700 .781* .1*81*
.398 2.31°
Run starting 1100 .693 , .690
First run of the da;, .212 .91*8
1.166 .1*53
1.1*32
1.21*5
i.35o
Chapel Road
1.320
.639
.926
nnapolis right
1.380
1.221*
1.165
1.021*
2.013
1.082
.961*
1.3U5
1.029
198
.91*0
1.282
.967
.058
.1*11
.588
.893
.591
.1*71
.761*
.591
1.007
of way
.267
.281
.632
.007
.533
.279
ND
.367
.757
ND
.180
.1*01*
7 0
38
39
5.1 1.50
37
26
7.9 6.00
23
11
U.I .75
iU
3U
3-1 2.25
13
31
U.2 U.5o
22
22
2.6 5.25
31
17
'111 uair.ple:; taker, OA Maryland State Department of Water Resources
LA Laboratory accident
-ND Not detectable
-------
-------
18
Sample
Number
Date
Sample
Taken
Time Sample Taken
Total P
mg/1
N02+NO, Tur- Chloro-
TKN mg/1 NH3 bidity phyll a
mg/1 N NO^-N mg/1 N JTU Hg/1
Station L 6 - Baltimore-Washington Expressway Bridge
68071531*
1631*
171*7
1837
1931*
7-15
7-16
7-17
7-18
7-19
Run starting 0700
Run starting HOC
First run of the day
.710
.159
.760
.181
1. ' V
Station L 6A - Ma rv land Route
68071535
1635
171*8
1838
1935
68071536
1636
171*9
1839
1936
68071537
1637
1750
181*0
1937
68071538
1638
1751
181*1
1938
7-13
7-16
7-17
7-18
7-19
7-15
7-16
7-17
7-18
7-19
7-15
7-16
7-17
7-18
7-19
7-15
7-16
7-17
7-18
7-19
Run starting C700
Run starting 1100
First run of the day
Station L 7 - U.
Run starting 0700
Run starting 1100
First run of the day
Station L 7A - I
Run starting C'OO
Run starting 1100
First run of the day
Station L 7B - I
Run starting 0700
Run starting HOC
First run of the day
1.T32
1.911
;.68!i
.662
2.102
S. Route 1 3:-
.0^5
1./15
i.895
.333
.*9B
.671
2.17? 1.
.552
.7-3
• */''
32, Dorse} Run
1.K20 1.
1.81*7 1.
3.i85
2.207
?.i*83
idge, Savage
.280
2. 057 1.
.368
.299
.1*07
920 ND 2.3 6.75
370 .61+1 31*
920 .081 15
180 1.^46 ', .1 6.75
038 1.068 34
LI 4.368 19
45?- .o!-(3 1.6 ;.5c
?kl .l"'9 3k
LA .037 11*
irock Bridge koad
2.13"
.393
.' . 368
.436
1.230
'.S. Route lj
,286
.787
.379
.194
1.258
.298
M53 1.
.1*69
.569
LA
Hammond Branch
l.Ci*3 1*.
1.166
.960 3.
1.316
1.1??
6uO .0/2 1.., 6.r_'
j!*9 .166 34
842 .<15 11*
COG .2_'3 8.5 39.00
075 .367 ?9
080 .16? 12
All samples taken by Maryland State Department of Water Resources
LA Laboratory accident
ND Not detectable
-------
Ill SURVEY RESULTS
1968
PATUXENT RIVER
SEWAGE TREATMENT PLANTS 8-HOUR COMPOSITES
ANNAPOLIS FIELD OFFICE
19
Date
Sample
Taken
' 4
I -'
06
0;'
0£
09
10
11
1?
13
D*
15
16
68tr'2u01
02
03
ok
05
06
07
08
09
1C
11
12
13
68072612
13
Ik
16
17
18
19
20
Location
Patuxent
Pdtuxent
Fort Meade # 1
Fort Meade # 1
Parkway
Parkway
Bcuie - Bel Air
Bowie - Bel Air
Savage
Savage
liSA
KSA
Maryland City
Maryland City
Jessup
J e s sup
Elkton
Elkton
Holly Hill
Holly Hill
Meadowview
Meadowvieu
Taneytown
'faneytown
Westminister
Westminister
New Windsor
Rising Sun Lagoon *
Union Bridge
Fort Detrick
Fort Detrick
Frederick
Frederick
Emmitsburg
Emmitsburg
Myersville
Myersville
New Market
Mew Market
Mount Saint Mary's Lagoon *
Influent
Effluent
Influent
Effluent
Influent
Effluent
Influent
Effluent
Influent
Effluent
Influent
Effluent
Influent
Effluent
Influent
Effluent
Influent
Effluent
Influent
Effluent
Influent
Effluent
Influent
Effluent
Influent
Effluent
?
Effluent
Effluent
Influent
Effluent
Influent
Effluent
Influent
Effluent
Influent
Effluent
Influent
Effluent
Effluent
Total P
P\
mg'l
36.6V
1*6.315
57.891*
1*14.210
21*. 105
143.157
W.263
1(6.210
27.8914
23.157
32.210
27.78U
50.1(20
7.368
8.000
8.210
30.19?
23.076
67. 30?
38.1(61
U6.153
25.865
U6.153
29.807
1*1.31*5
36.538
21*. 519
19.711
9.13k
7.826
5.722
20.1*1*8
11*. 891*
21*. 151
Hi. 305
61*. 880
33.071
30.799
19.859
5.133
TKN
mg/1 N
33.330
2.605
21*. 518
21*. 097
28.9li3
17.297
36.835
21.262
114.711
3.237
36.356
22.61^1
31.050
l.khb
19.557
16.95?
26.228
20.322
Ii6.96o
3.626
32.690
h.09k
32.U56
31.021*
3k. 357
17.719
7.076
9.152
6.637
9.521*
.357
36.280
20.327
21*. 1*05
13.185
51.01*2
37.202
39.970
32.530
14.583
All samples received from Maryland State Department of Health
•" Grab sample
-------
-------
20
Sample
Number
68081415
16
17
18
19
20
21
22
23
2U
25
26
68081615
16
17
18
19
20
21
22
23
2U
25
26
27
28
Date
Sample
Taken Location
8-13 Elkton
Elkton
Holly Hill
Holly Hill
Perryville
Perryville
Westminster
Westminster
Jessup
JesGup
New Windsor
'inion Bridge
8-15 Victor Cullen
Victor Oullen
Laurel
Laurel
Frederick
Frederick
Middle town
Middletown
Myersville
Myersville
New Market
New Market
Fort Detrick
Mount Saint Mary's Lagoon
Influent
Effluent
Influent
Effluent
Influent
Effluent
Influent
Effluent
Influent
Effluent
•'
9
Influent
Effluent
Influent
Effluent
Influent
Effluent
Influent
Effluent
Influent
Effluent
Influent
Effluent
Influent
Effluent
Total P
PC
mg4!
27.^6
? 9.0 h2
59 . 1 _' . , i T,
"l.r-62
38. ;4)t
15.4)43
9.880
LA
26. /[(7
21.657
28.01?
21.17::
25.87U
25.452
35.723
40.783
1.4l6
5.271
9.006
6.9"8
68100328
10-03
Parkway
Effluent
All samples received from Maryland State Department of Health
LA Laboratory accident
-------
-------
BELOW HOWARD T DUCKETT DAM_ |fi
(ROCKY GORGE DAM)
/-"^ — US ROUTE I SAVAGE — L 7
US ROUTE 1 HAMMOND BRANCH - L 78
SAVAGE
-— JESSUP
.„•— 0ROCK BRIDGE ROAD — L 7A
--MARYLAND ROUTE 32 DORSEY RUN— L6A
- BALTIMORE-WASHINGTON EXPRESSWAY BRIDGE~L«
•— FORT MEADE NO 2
SIM
OLD FORGE BRIDGE — L 4
OLD WASHINGTON 304. ANNAPOLIS RIGHT OF WAY— L
WOODWARDVIUE BRIDGE- L 3
HOWARD T DUCKET
PATUXENT
LAURE
15-MARYLAND ROUTE l»6 BR'DG
MARYLAND CITY
C-UPSTREAM FAlRVIEW TRAILEP P&R* BROCK BRIDGE ROAD
BRIDGE
PA HW WAV
I3-W1LDLIFE REFUGE , DUVALL ROAD
i3B-WILDLIFE REFUGE
12-PENNSYLVANIA RAILROAD BRIDGE LEMON BRIDGE ROAD
- TQWSFP.S BRIDGE. WAuGH CHAPEL ROAD- L 2A
FORT MEADE NO I
MARYLAND ROUTE 424 BRIDGE— L2
BOWIE-BEL AIR STP DISCHARGE
BOWIE- BEL AIR
UPSTREAM FROM CONFLUENCE WITH PATUXENT RlVER-L
PRIEST BRIDGE- 10
^-DEFENSE HIGHWAY BRIDGE . ROUTE 3
QUEEN ANNE'S BRIDGE -E 2
BELL'S JUNK YARD - E 3
El - ROUTE SO BRIDGE
TRAILER COURT - E 4
WAYSON'S CORNER, ROUTE 4 BRIDGE - E 5
MOUTH OF WESTERN BRANCH - E 6
— MIDDLE OF JUG BAY - E «A
E 5A - WESTERN BRANCH
MOUTH OF LYON'S CREEK - £7
E ft - NOTTINGHAM
EO- LOWER MARLBORO. OPPOSITE WH
HIGH POWER LINES - E 10
HALFWAY BETWEEN TRUEMAN POINT
AND DEEP LANDING
E HA-PEPCO CANAL
E >4- BENEDICT BRIDGE CHANNEL
5-SHERIDAN POINT. BUOY 2
PATUXENT RIVER SURVEY
1968
SCALE IN MILES
-------
-------
Annapolis Field Office
Region III
Environmental Protection Agency
1969 Data Report
Number 17
WATER QUALITY SURVEY
OF THE
PATUXENT RIVER
Staff
James W. Marks, Chief, Laboratory Section
Orterio Villa, Jr., Chemist
Anna R. Favorite, Statistician
Evelyn P. McPherson, Technician
-------
-------
TABLE OF CONTENTS
Page
I INTRODUCTION „ 1
II STATION LOCATIONS 6
III SURVEY RESULTS 7
IV MAP appendix i
-------
-------
I INTRODUCTION
A. Purpose and Scope
During the year of 1969 the Annapolis Field Office, Region
III, Environmental Protection Agency continued surveys of the
estuary portion of the Patuxent River. The purpose of the
surveys was to continue upgrading data from previous years and
model verification.
B. General Remarks
The Patuxent estuary was sampled six times during the year.
Monthly sample runs were made during the summer months of June
through August.
C. Sampling Procedures
Samples for chemical analysis were obtained by dipping a
plastic bucket into the river water with a minimum of agitation.
The water sample was then transferred to a plastic one-quart
cubitainer. Dissolved oxygen (DO) samples were obtained by
siphoning from the bucket through plastic tubing extended to
the bottom of a conventional 300 ml DO bottle. The bottle was
overfilled twice without excessive agitation, and the DO fixed
immediately. All samples were stored on ice. Analysis was
started immediately on return to the Annapolis Field Office,
generally within two hours of sampling.
-------
-------
D. Measured Parameters and Analytical Methods
1. Water temperature was determined using a mercury
thermometer inserted into the sample container immediately
upon collection.
2. Water temperature was read from a Beckman Salinometer.
3. Conductivity was read from a calibrated Beckman Salinometer.
It. Salinity was determined with a calibrated Beckman
Salinometer.
5. Total Phosphorus
Reference: Menzel, D.W. and Corwin, N., 1965. The
Measurement of Total Phosphorus in Seawater Based on the Liberation
of Organically Bound Fractions by Persulfate Oxidation. Limonology
and Oceanography, 10: 280-282.
Murphy, J. and Riley, J.P., 1962. A Modified Single
Solution Method for the Determination of Phosphate in Natural
Waters. Analytica Chimica Acta, 2?: 31-36.
Total Phosphorus was determined after persulfate oxidation
of the sample in an autoclave at 15 psi for 30 minutes. The
resultant ortho-phosphate was then determined colorimetrically as
the molybdenum-blue complex with the optical density measured at
882 mH.
6. Inorganic Phosphorus
Reference: Murphy, J. and Riley, J.P., 1962. A Modified
-------
-------
3
Single Solution Method for the Determination of Phosphate in
Natural Waters. Analytica Chimica Acta, 27- 31-36.
Inorganic Phosphorus was determined by automation of
the above procedure using the Technicon "AutoAnalyzer." The
molybdenum-blue complex formed was determined colorimetrically
with the optical density measured at 885 mM>.
7. Total Kjeldahl Nitrogen
Reference: Standard Methods for the Examination of
Water and Wastewater, 12 ed., 1965.
Total Kjeldahl Nitrogen includes ammonia and organic
nitrogen and was determined by the standard micro-kjeldahl
procedure. The sample was digested in the presence of strong
acid to convert the organic nitrogen to ammonia. The ammonia
was then distilled, collected in boric acid solution, nessleriz-
ed and determined colorimetrically.
8. Nitrate and Nitrite
Reference: A Practical Handbook of Seawater Analysis,
J.D.H. Strickland and T.R. Parsons, Bulletin 16?, Fisheries
Reasearch Board of Canada, Ottawa, Canada. 1968.
Nitrate plus nitrite nitrogen was determined by
automation of the above procedure using the Technicon "Auto-
Analyzer." This procedure utilizes cadmium reduction of
nitrate to nitrite and subsequent diazotization with sulfanilamide
-------
-------
k
and lJ-(l-naphthyl)-ethylenediamine dihydrochloride with the
optical density measured at 5>^0 mM-. The results were re-
ported as nitrogen.
9. Ammonia
Reference: Southeast Water Laboratory, FWQA,
Methodology for the colorimetric determination of ammonia
by the phenol-hypochlorite reaction.
FWPCA Methods for Chemical Analysis of Water and
Wastes, November 1969.
Ammonia nitrogen was determined by automation of the
phenol-hypochlorite procedure as described in the Southeast
Water Laboratory Methodology and later adopted as the official
FWPCA procedure. The intensity of the indophenol blue color,
formed by the reaction of ammonia with alkaline phenol-hypo-
chlorite, was increased using sodium nitroprusside as an
intensifying agent. The optical density was measured at 630
mM- and calculated as NHo_N.
10. Chlorophyll a
Reference: A Practical Handbook of Seawater Analysis,
J.D.H. Strickland and T.R. Parsons, Bulletin l6?, Fisheries
Reasearch Board of Canada, Ottawa, Canada. 1968.
Chlorophyll a was determined by extraction of millipore
filtered samples in 90$ acetone and read spectrophotometrically.
-------
-------
5
11. Turbidity was determined with a Hach photoelectric
nephelometer, calibrated in Jackson Turbidity Units.
12. Dissolved Oxygen
Reference: Standard Methods for the Examination of
Water and Wastewater, 12 ed., 1965-
Dissolved Oxygen was determined by the azide modification
of the basic Winkler method with the titration done potentio-
metrically with a Fisher automatic "titralyzer."
-------
-------
II STATION LOCATIONS
Station Location
E 1 Route $0 Bridge
E 2 Queen Anne's Bridge
E 3 Bell's Junk lard
E h Trailer Court
E 5 Wayson's Corner, Route k Bridge
E £A Western Branch
E 6 Mouth of Western Branch
E 6A Middle of Jug Bay
E 7 Mouth of Lyon's Creek
E 8 Nottingham
E 9 Lower Marlboro, opposite wharf
E 10 High Power Lines
E 11 Halfway between Trueman Point and Deep Landing
E 12 500 yards east of PEPCO Canal
E 13 Chalk Point
E ll). Benedict Bridge Channel
E 15 Sheridan Point, Buoy 21
-------
-------
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E i - ROUTE 50 BRIDGE
QUEEN ANNE'S BRIDGE - E
E 5A - WESTERN BRANCH
BELL'S JUNK YARD - E 3
TRAILER COURT - E 4
WAYSON'S CORNER. ROUTE 4 BRIDGE -E5
MOUTH OF WESTERN BRANCH - E 6
MIDDLE OF JUG BAY - E 6A
MOUTH OF LYON'S CREEK - E7
E 8 - NOTTINGHAM
E9- LOWER MARLBORO. OPPOSITE WHARF
HALFWAY BETWEEN TRUEMAN POINT
AND DEEP LANDING
£14- BENEDICT BRIDGE CHANNEL
HIGH POWER LINES - E 10
500 YARDS EAST OF PE PCO CANAL- E 12
CHALK POINT - E 13
EI5-SHERIDAN POINT. BUOY 21
PATUXENT RIVER SURVEY
1969
SCALE IN MILES
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Annapolis Field Office
Region III
Environmental Protection Agency
1969 Data Report
Number 18
WATER QUALITY
OF THE
POTOMAC ESTUARY
TRANSECTS, INTENSIVE AND
SOUTHEAST WATER LABORATORY
COOPERATIVE STUDIES
Staff
James W. Marks, Chief, Laboratory Section
Orterio Villa, Jr., Chemist
Anna R. Favorite, Statistician
Evelyn P. McPherson, Technician
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TABLE OF CONTENTS
Page
I INTRODUCTION 1
II STATION LOCATIONS 8
III SURVEY RESULTS 10
IV MAP appendix i
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I INTRODUCTION
A. Purpose and Scope
From June through December, 1969, the Annapolis Field
Office, Environmental Protection Agency, Region III conducted
water quality surveys on the estuarine portion of the Potomac
River. The results of these investigations are presented
in this report.
B. General Remarks
Transect stations were sampled from June through Decem-
ber. Transects were made across the river with the following
designations: RSM/RCM - right shore Maryland/right channel
Maryland; MG - mid channel; LSV/LCV - left shore Virginia/
left channel Virginia,
A 10-station 3-day intensive study was made August 12, 13 and
ll;. This intensive included influent and effluent samples
from twelve sewage treatment plants discharging into the
Potomac Estuary, Four selected stations included three em-
bayments of the creek, #3 being the mouth and #1 being the
headwaters.
The third survey was a cooperative study with Southeast
Water Laboratory (SEWL) and FWPCA-DC pilot plant, conducted
on October li;, 15 and 16. The objective of this survey was to
determine the contribution of the carbonate system to the over-
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all eutrophication problem in the Potomac Estuary.
C. Sampling; Procedures
Samples were obtained using a small submersible pump
attached to a wire cable calibrated in feet. The pump was
lowered to the desired depth and allowed to run for two
minutes before receiving samples in plastic cubitainers.
Dissolved oxygen (DO) samples were obtained directly from
the pump outlet extending to the bottom of a conventional
300 ml DO bottle. The sample was allowed to overflow the
bottle several times and then fixed immediately. All sam-
ples were stored on ice and the analysis started upon re-
turn to the laboratory, generally within two hours of
sampling. Determinations of free, dissolved C02 were car-
ried out in the field by the Annapolis Field Office. SEWL
independently determined free, dissolved C^ using gas
chromatography at a later date.
D. Measured Parameters and Analytical Methods
1. Water temperature was determined using a mercury
thermometer inserted into the sample container immediately
upon collection.
2. Water temperature was read from a Beckman Salinometer.
3. Light extinction, in inches, was made with a 12"
(30 cm) white secchi disk.
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3
It. The pH measurements were made with a field pH meter.
5. Conductivity was read from a calibrated Beckman
Salinometer.
6. Salinity was determined with a calibrated Beckman
Salinometer.
7. Total Phosphorus
Reference: Menzel, D.W. and Corwin, N., 1965. The
Measurement of Total Phosphorus in Seawater Based on the
Liberation of Organically Bound Fractions by Persulfate
Oxidation. Limonology and Oceanography, 10: 280-282.
Murphy, J. and Riley, J.P., 1962. A Modified Single
Solution Method for the Determination of Phosphate in Natural
Waters. Analytica Chimica Acta, 27: 31-36.
Total Phosphorus was determined after persulfate
oxidation of the sample in an autoclave at 15 psi for 30
minutes. The resultant ortho-phosphate was then determined
colorimetrically as the molybdenum-blue complex with the op-
tical density measured at 882 mH.
8. Inorganic Phosphorus
Reference: Murphy, J. and Riley, J.P., 1962. A
Modified Single Solution Method for the Determination of Phos-
phate in Natural Waters. Analytica Chimica Acta, 27: 31-36.
Inorganic Phosphorus was determined by automation
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h
of the above procedure using the Technicon "Auto Analyzer,;"
The molybdenum-blue complex formed was determined colori-
metrically with the optical density measured at 885 mM-.
9. Total Kjeldahl Nitrogen
Reference: Standard Methods for the Examination of
Water and Wastewater, 12 ed., 1965.
Total Kjeldahl Nitrogen includes ammonia and organ-
ic nitrogen and was determined by the standard micro-kjeldahl
procedure. The sample was digested in the presence of strong
acid to convert the organic nitrogen to ammonia. The ammonia
was then distilled, collected in boric acid solution, nessler-
ized and determined colorimetrically.
10. Total Kjeldahl Nitrogen, millipore filtered (Dissolved)
Reference: Standard Methods for the Examination of
Water and Wastewater, 12 ed., 1965.
The sample as received was filtered through a Type
HA millipore filter. Total millipore filtered Kjeldahl
Nitrogen includes ammonia and organic nitrogen and was de-
termined by the standard micro-kjeldahl procedure. The
sample was digested in the presence of strong acid to-con-
vert the organic nitrogen to ammonia. The ammonia was then
distilled, collected in boric acid solution, nesslerized and
determined colorimetrically.
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11. Nitrate + Nitrite
Reference: A Practical Handbook of Sea Water Analysis,
J.D.H. Strickland and T.R. Parsons, Bulletin 16?, Fisheries
Research Board of Canada, Ottawa, Canada, 1968.
Nitrate plus nitrite nitrogen was determined by
automation of the above procedure using the Technicon "Auto
Analyzer." This procedure utilizes cadmium reduction of
nitrate to nitrite and subsequent diazotization with sulfan-
ilamide and N-(l-naphthyl)-ethylenediamine dihydrochloride with
the optical density measured at 51|0 m^. The results were re-
ported as nitrogen.
12. Ammonia
Reference: Southeast Water Laboratory, FWQA,
Methodology for the colorimetric determination of ammonia
by the phenol-hypochlorite reaction.
FWPCA Methods for Chemical Analysis of Water and
Wastes, November 1969.
Ammonia nitrogen was determined by automation of
the phenol-hypochlorite procedure as described in the South-
east Water Laboratory Methodology and later adopted as the
official FWPCA procedure. The intensity of the indophenol
blue color, formed by the reaction of ammonia with alkaline
phenol-hypochlorite, was increased using sodium nitroprusside
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as an intensifying agent. The optical density was measured
at 630 mM- and calculated as NH^-N.
13. Chlorophyll a
Reference: A Practical Handbook of Seawater Analysis,
J.D.H. Strickland and T.R. Parsons, Bulletin 16?, Fisheries
Research Board of Canada, Ottawa, Canada. 1968.
Chlorophyll a was determined by extraction of milli-
pore filtered samples in 90$ acetone and read spectrophoto-
metrically.
Ik- Dissolved Oxygen
Reference: Standard Methods for the Examination of
Water and Wastewater, 12 ed., 1965.
Dissolved Oxygen was determined by the azide modi-
fication of the basic Winkler method with the titration done
potentiometrically with a Fisher automatic "titralyzer."
l£. Biochemical Oxygen Demand
Reference: Standard Methods for the Examination of
Water and Wastewater, 12 ed., 196£.
The Biochemical Oxygen Demand was determined by the
azide modification of the basic Winkler method with the titra-
tion done potentiometrically with a Fisher automatic "titraly-
zer." The samples as received were diluted if necessary and
transferred to standard 300 ml BOD bottles in triplicate. One
initial DO and two final DO determinations were used throughout.
-------
Incubation was started immediately at 20 °C and continued for
five days after which they were titrated.
16. Total Organic Carbon
Reference: Beckman Instruments, Bulletin It05>9.
Total Organic Carbon was determined with a Dow-Beckman
Carbonaceous Analyser after the sample had been purged with
nitrogen gas for five minutes.
17. Free Carbon Dioxide
Reference-' Standard Methods for the Examination of
Water and Wastewater, 12 ed., 1965, pp. 77-8^.
Free Carbon dioxide was determined in the field by
a titrimetric procedure. Carbon dioxide reacts with sodium
carbonate to form sodium bicarbonate. Reaction completion is
indicated by development of a pink color characteristic of
phenolphthalein indicator.
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II STATION LOCATIONS
Station Location _
1 Key Bridge
2 llith Street Bridge
3 Haines Point
li Bellevue
5 Woodrow Wilson Bridge
6 Broad Creek erabayment
7 Piscataway Creek embayment
8 Dogue Creek embayment
8A Gunston Cove embayment
9 Hallowing Point
10 Indian Head
10A Occoquan Bay embayment
11 Possum Point
12 Sandy Point
13 Smith Point
li; Maryland Point
15 Nanjemoy Creek
15A Mathias Point
16 Route 301 Bridge
17 Upper Machodoc
18 Kettle Bottom
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Station Location
19 Wicomico Point
20 Kingcopisco Point
21 Ragged Point
23 Point Lookout
2h Smith Point
2£ Point Lookout (Bay)
Alexandria STP
Arlington STP
Andrews Air Force Base STP #1
Andrews Air Force Base STP #k
Blue Plains STP
Fairfax STP-Dogue Creek
Fairfax STP-Little Hunting Creek
Fairfax STP-Westgate
Fort Belvoir STP #1
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rH rH
O Ox ON CM CM -Zf
rH Ox CM O CO NO
33 Ox NO r^NO NO
rH XA ON CM O en
>— en XA en ON r>-
r— rHXAco r— o-
CM rH
O rH O O CO [--
O CM NO -^t
^o XACO XANO co
rH
CM O OX NO -Tt rH
CM XAMO -^JNO NO
NO XAXAXAXAXTX
NO XAXA en o ON
O Ox rH en r- co
r— NO MO co NO XA
XA
O CM O rH rH CM
XA CM CO C--CO _Cj
NO r-- NO r~-xO r^
CO NO CO CM CM en
XA XA
XA r— MO D--NO NO
CM CXJ CXI CM CV CNJ
XA
CXI CXI
XAXAXA
NO co XA t-— NO o-
CM CXI CM CM CM CM
CM CM en en_zt-^J
1 1 1 1 1 1
CO co co co co co
rH »H rH OXNO NO
o XAO en o rH
CM CM m cn-^-ct
rH rH rH rH rH rH
CO
0
Ox
MO
21
-------
-------
Ill SURVEY RESULTS
1969
POTOMAC ESTUARY INTENSIVE STUDY
SEWAGE TREATMENT PLANTS
2l*-HOUR COMPOSITES
ANNAPOLIS FIELD OFFICE
22
Date
mple Sample
Tiber Taken
1118 8-10
1119
1233 8-11
1231*
1317 8-12
1318
121*3 8-12
121*1*
1327
1328
121*5 8-12
121*6
1329
1330
121*7 8-12
121*8
1331
1332
1103 8-11
1101*
1235
1236
1319 8-12
1320
1105 8-11
1107
1237 8-12
1238
1321
1322
1108 8-10
1109
121*1 8-12
121*2
1325
1326
1239 8-12
122*0
1323
1321*
Location
ARLINGTON INFLUENT
EFFLUENT
INFLUENT
EFFLUENT
ARLINGTON INFLUENT
EFFLUENT
FORT BELVOIR #1 INFLUENT
EFFLUENT
INFLUENT
EFFLUENT
FORT BELVOIR #2 INFLUENT
EFFLUENT
INFLUENT
EFFLUENT
PENTAGON INFLUENT
EFFLUENT
INFLUENT
EFFLUENT
BLUE PLAINS INFLUENT
EFFLUENT
INFLUENT
EFFLUENT
BLUE PLAINS INFLUENT
EFFLUENT
FAIRFAX- DOQDE CK INFLUENT
EFFLUENT
FAIRFAX-DOGUE CK INFLUENT
EFFLUENT
INFLUENT
EFFLUENT
FAIRFAX-WESTGATE INFLUENT
EFFLUENT
INFLUENT
EFFLUENT
INFLUENT
EFFLUENT
FAIRFAX-LITTLE HUNTING INFLUENT
EFFLUENT
INFLUENT
EFFLUENT
Total P
mg/1
25.01*2
21.260
21.971
17.323
16.351*
8.177
12.675
8.3U5
28.620
lit. 71 8
30.316
16 . 901
19.111*
15.1*31*
20.598
17.957
10.9
.122
ll*.82l
11.751*
16.690
16.373
.277
.227
1*0.371*
31.073
25.985
26.619
.231
.177
28.620
27.901*
1*0.11*0
30.316
30.153
28.620
29.999
29.68
Inorganic
mg/1
POj,
11*.
15-
5.
8.
10.
16.
9.
16.
9.
-7
1 .
13.
17.
27.
16.
11.
17.
20.
18.
21*.
792
969
51*7
290
91*6
751*
615
579
982
692
871*
603
923
579
021*
677
332
561*
869
P TKN
TKN mg/1 N
mg/1 N mf
23.582
16.678
26.531*
11*. 509
30.615
6.258
28.988
6.196
31*. 163
If .066
1*1.1*11
52.270
1*9.906
23.81*0
1*9.019
25.859
12.936
13.291
16.033
11*. 969
18.528
11*. 018
22.611*
13.001
25.131
11*. 162
25.00
16.101*
23.259
16.81*0
23.130
22.227
1*2.700
29.51*0
21*. 969
21.001
25.920
21*. 1*17
9.872
11.227
mg/1
NO^-N
.20
6.55
5.5o
li.OO
NH:
11*.
7.
10,
12.
L
,90
,50
,5o
20
TOG
mg/1
55.68
8.81*
68.03
26.50
86.21
19.29
BOD
mg/1
75-5
10.0
108.0
29.1*
LA
LA
8l.02>381*.0
2.936
16.625
11*. 356
ND
18.1*85
19.11*1
6.065
10.033
11*. 233
9.1*81*
10.191*
18.528
13-323
13.1*20
2.761
12.710
18.371*
8.55
6.90
it. 05
3.55
10.35
7.15
.725
.65
.55
3.10
2.75
1.95
.775
.25
.20
1.10
.80
1*.
3.
13.
15.
16.
16.
7.
10.
10.
11.
11.
12.
12.
13.
15.
11*.
16.
70
90
,75
00
00
00
59
25
50
35
85
70
00
90
5o
5o
25
10.35
93.01
20.01
81*. 10
12.65
11*3-55
19.29
100.51
32.56
131*. 91*
37.93
27.95
29.77
1*1*. 77
26.67
61*. 20
36.62
1*0.61*
18.71
89.81
29.39
71*. 66
23.63
31*. 89
1*9.25
91.86
73.09
377.11*
75.75
89.23
27.00
85.1*6
31.69
28.1*
LA
LA
291*. 0
32.9
LA
LA
256.5
53.0
LA
LA
118.50
55.10
20.0
1*.70
LA
LA
157.5
Ul*. 8
68.5
.90
LA
LA
191*. 5
56.0
68.5
25.5
LA
LA
58.0
5.20
LA
LA
Not detectable
Laboratory accident
-------
-------
Ill SURVEY RESULTS
1969
POTOMAC ESTUAjgX INTENSIVE STUDY
SEWAGE TREATMENT PLANTS
2U-HOUR COMPOSITES
ANNAPOLIS FIELD OFFICE,
23
iple
i?er
1110
1111
12U9
1250
1112
1113
12 "9
1.30
1313
lilli
lllli
111=;
1231
r-j-'
1315
1316
1116
1117
1227
Y: 2 «
1311
131?
Date
Sample
Jaken
8-10 PISCATAWAT CK.
8-11
8-10 ANDREWS AFB PLANT 1
8-11
8-12
8-10 ANDREWS -1FB PLANT k
8-11
8-12
8-10 /ILEXANDKI4
8-11
8-12
INFLUENT
EFFLUENT
INFLUENT
EFFLUENT
INFLUENT
EFFLUENT
INFLUENT
EFFLUENT
INFLUENT
EFFLUENT
INFLUENT
EFFLUENT
INFLUENT
EFFLUENT
INFLUENT
EFFLUENT
INFLUENT
EFFLUENT
INFLUENT
EFFLUENT
INFLUENT
EFFLUENT
Total P
mg/'l
P0,(
.171
.082
18.807
9-U03
i082
.128
25.962
1U.U12
Ik. 7 88
21.651;
.098
.128
11;. 105
18.398
52.391;
21.337
kk. 259
28.722
30.950
29-999
Inorganic
mg/1
P°k
7.725
7.5UU
12.U99
11.538
19.372
11.371
18.786
18.1U2
25.813
26.789
P ,. ..
TKN
mg/1 N
22.356
3.678
32.228
U.U8U
11.778
2.258
18.001
5.19k
5.^29
18.712
21.227
3.613
16.291
li.936
26.380
7.515
2^.163
20.292
32.669
21.U72
TKN
mg/1 N
mg
2
1
1
2
12
2
2
3
11
16
.355
.77U
.355
.581
• ii51i
.678
.613
.282
.162
.565
N02+N0
mg/1
NO?-N
5.65
7.U5
7.13
8.15
ND
7.25
9-50
8.75
• 1$
.20
.5
ND
NH3 TOG
mg/1 N mg/1
2.80
U.30
1.3li
U.35
13.05
2.25
U.30
k.90
11.70
1U.90
1U.75
1U.05
55.89
11. lU
Ii3.59
10.93
2U.28
8.92
Ul.02
10.15
lli.OO
14i.61i
27.51i
16.15
3U.7U
10.93
71.59
lU.99
hh.32
55.68
75.U8
38. U6
92.62
U5.93
BOD
mg/1
115.0
19. k
107.0
6.80
61.0
11.0
86.5
8.20
LA
LA
8o.5
1.70
56.5
6.20
LA
LA
9U.O
75.5
189.5
59.1
LA
LA
Laboratory accident
Not detectable
-------
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GO O O XA J3
NO NO NO v\ c 3
rH rH rH r-i 3 ^
t.
n
M 'H
•H (0
g,r^
["-CO rHCMONO rHcfl
XAXA r-i r-j XA MO oj pj
lAlA _J/_^TIAIA id <
O O 1
rH rH t
ON *
MO * V
-------
LOCATION MAP
LEGEND
• SEWAGE TREATMENT PLANTS
A BLUE PLAINS
B ARLINGTON
C ALEXANDRIA
D FAIRFAX — WESTGATE
E FAIRFAX— LITTLE HUNTING CREEK
F FAIRFAX—DOGUE CREEK
G PISCATAWAY
H ANDREWS AIR FORCE BASE-NO I &4
I FORT BELVOIR — NO. I &2
J PENTAGON
'OINT LOOKOUT-23
1969
SCALE M MLCS
POTOMAC ESTUARY
-------
Annapolis Field Office
Region III
Environmental Protection Agency
1969 Data Report
Number 19
WATER QUALITY SURVEY
OF THE
POTOMAC ESTUARY
PHOSPHATE TRACER STUDY
Staff
James W. Marks, Chief, Laboratory Section
Orterio Villa, Jr., Chemist
Anna R. Favorite, Statistician
Evelyn P. McPherson, Technician
-------
-------
TABLE OF CONTENTS
Page
I INTRODUCTION 1
II STATION LOCATIONS 5
III SURVEY RESULTS 7
IV MAP appendix i
-------
-------
I INTRODUCTION
A. Purpose and Scope
From November 3 through December 1, 1969, the Annapolis
Field Office, Environmental Protection Agency, Region III
conducted a water quality survey of the Potomac Estuary. The
purpose of this study was to determine the usefulness of in-
organic phosphate as a tracer.
B. General Remarks
The use of tracer techniques in water quality studies
is time proven and well documented. Dyes and conservative
parameters such as chlorides are normally used in tracer
studies. The present study investigates the feasibility of
using inorganic phosphate (orthophosphate) as a tracer in
place of dyes or more conservative elements.
Composite samples were taken from four major sewage
treatment plants: Blue Plains, Arlington, Alexandria and
Fairfax Westgate.
Dye injections were made at specific times to provide
additional flow information. Dye releases were monitored
by fluorometers at three locations in the study area.
The use of inorganic phosphate instead of dye to de-
termine the diffusion coefficients offers promise and is
worthy of further investigation.
-------
-------
C. Sampling Procedures
Samples were obtained using a small submersible pump
attached to a wire cable calibrated in feet. The pump was
lowered to the desired depth and allowed to run for two
minutes before receiving samples in plastic cubitainers.
All samples were iinmediately stored on ice and the analysis
started upon return to the laboratory, generally within two
hours of sampling.
D. Measured Parameters and Analytical Methods
1. Water temperature was determined using a mercury
thermometer inserted into the sample container immediately
upon collection.
2. Total Phosphorus
Reference: Menzel, D.W. and Corwin, N., 196£.
The Measurement of Total Phosphorus in Seawater Based on
the Liberation of Organically Bound Fractions by Persulfate
Oxidation. Limonology and Oceanography, 10: 280-282.
Murphy, J. and Riley, J.P., 1962. A Modified
Single Method for the Determination of Phosphate in Natural
Waters. Analytica Chimica Acta, 2?: 31-36.
Total Phosphorus was determined after persulfate
oxidation of the sample in an autoclave at 15 psi for 30
minutes. The resultant ortho-phosphate was then determined
-------
-------
colorimetrically as the molybdenum-blue complex with the
optical density measured at 882 ml^.
3. Inorganic Phosphorus
Reference: Murphy,, J. and Riley, J.P., 1962. A
Modified Single Solution Method for the Determination of Phos-
phate in Natural Waters. Analytica Chimica Acta, 27 = 31-36.
Inorganic Phosphorus was determined by automation
of the above procedure using the Technicon "Auto Analyzer . M
The molybdenum-blue complex formed was determined colori-
metrically with the optical density measured at 885 mM-.
k. Total Kjeldahl Nitrogen
Reference: Standard Methods for the Examination of
Water and Wastewater, 12 ed., 1965.
Total Kjeldahl Nitrogen includes ammonia and organ-
ic nitrogen and was determined by the standard micro-kjeldahl
procedure. The sample was digested in the presence of strong
acid to convert the organic nitrogen to ammonia. The ammonia
was then distilled, collected in boric acid solution, nessler-
ized and determined colorimetrically.
5. Nitrate + Nitrite
Reference: A Practical Handbook of Sea Water Anal-
ysis, J.D.H. Strickland and T.R. Parsons, Bulletin 16?, Fisheries
Research Board of Canada, Ottawa, Canada, 1968.
-------
-------
Nitrate plus nitrite nitrogen was determined by
automation of the above procedure using the Technicon "Auto
Analyzer." This procedure utilizes cadmium reduction of
nitrate to nitrite and subsequent diazotization with sulfan-
ilamide and N-(l-naphthyl)-ethylenediairiine dihydrochloride with
the optical density measured at 5^0 mM-. The results were re-
ported as nitrogen.
6. Ammonia
Reference: Southeast Water Laboratory, FWQA,
Methodology for the colorimetric determination of ammonia
by the phenol-hypochlorite reaction.
FWPCA Methods for Chemical Analysis of Water and
Wastes, November 1969.
Ammonia nitrogen was determined by automation of
the phenol-hypochlorite procedure as described in the South-
east Water Laboratory Methodology and later adopted as the
official FWPCA procedure. The intensity of the indophenol
blue color, formed by the reaction of ammonia with alkaline
phenol- hypochlorite, was increased using sodium nitroprusside
as an intensifying agent. The optical density was measured
at 630 inM- and calculated as NH^-N.
-------
-------
II STATION LOCATIONS
Number Location
1 Key Bridge
2 lUth Street Bridge
2B Memorial Bridge
3 Haines Point
3A ' East Potomac Park
3C Hunter Point, National Airport
h Bellevue
hA Above Blue Plains STP
5 Woodrow Wilson Bridge
5A Rosier Bluff
6 Broad Creek
7 Piscataway Creek
8 Dogue Creek
8A Gunston Cove
9 Hallowing Point
10 Indian Head
11 Possum Point
12 Sandy Point
CB3 Great Falls
-------
-------
Number Station
1 Alexandria STP
2 Arlington STP
3 Blue Plains STP
k Fairfax STP Westgate
-------
-------
Ill SURVEY RESULTS
1969
POTOMAC ESTUART PHOSPHATE TRACER STUDY
ANNAPOLIS FIELD OFFICE
Sample
NuMber
69110301
0317
01*01
01*02
01*03
01*01*
01*05
ol*06
01*07
0501
0601
0701
0801
1001
1018
1101
1102
1103
1101*
1105
1106
1107
1108
1201
1218
11*01
11*02
11*03
11*01*
11*05
11*06
11*07
11*08
1501
1701
1718
1801
1802
1803
1801*
1805
1806
1807
1808
1901
1918
191*0
Date
Sample
Taken
11-3
11-1*
11-5
11-6
11-7
11-8
11-10
11-11
11-12
11-13
11-11*
11-17
11-18
11-19
Time
Sample
Taken
0916
11*57
1039
101*1
101*5
1039
101*1
101*5
101*1
1118
1221
131*8
0725
0812
11*38
1227
1230
1235
1227
1230
1235
1227
1230
1000
1552
1302
1305
1308
1302
1305
1308
1302
1305
1258
0910
11*1*5
1312
1315
1318
1312
1315
1318
1312
1315
1028
1713
Transect
Location
Station
Al
A2
A3
Bl
B2
B3
C2
Al
A2
A3
Bl
B2
B3
Cl
C2
Al
A2
A3
Bl
B2
B3
Cl
C2
Al
A2
A3
Bl
B2
B3
Cl
C2
Total P
Water mg/1
Temp "C P0|,
1 - Key Bridge
13.5
15
13
11.5
10
9.5
9 .1*71
10
10.5
10
10
6.5
7
7.5 .1*00
8
.391*
Inorganic P
mg/1 TKN
P01* ma/1 N
.070
.075
.120
.125
.133
.11*0
.11*3
.133
.138
.082
.120
.097
.113
.171*
.11*5
.173
.221
.251*
.273
.285
.283
.289
.288
.163
.278
.188
.210
.308
.182
.252
.285
.305
.312
.325
• 335
.335
.310
.238
NOg+NOj
mg/1
NO^-N
.072
ND
ND
.087
.295
.376
.791
.820
.86
.86
.82
.81*
.86
.81
.86
.81*
.95
.98
.91
1.03
.979
.816
.800
ME/ 1 N
.710
ND
.o' ;
.163
.0°5
.090
.058
.OlC'
.01*9
.037
.028
.022
.029
.01*1*
.015
.025
.01*0
.059
.018
.052
.075
.116
.089
D Not detectable
-------
-------
Sample
Number
69110303
0319
01*08
01*09
oliic
01*11
0!*12
01*13
01*11*
o;*i5
0303
0603
-703
0603
1003
1020
1109
1110
1111
1112
1113
nil*
in5
1116
1203
1220
11*09
11*10
llill
11*12
1143
ll*ll*
iia5
ll*l6
1503
1703
1716
1809
1810
1811
1312
1813
1811*
1815
1816
1903
1920
19U1
2501
2601
Date
Sample
Taken
11-3
11-1*
11-5
11-6
11-7
11-8
11-10
11-11
11-12
11-13
11-11*
11-17
11-16
11-19
11-21*
11-26
Time
Sample
Taken
0900
11*1*2
iiou
1106
1108
1109
1110
1112
llOli
1106
1100
1201
1332
0710
0801
11*20
1152
1155
1157
1158
1159
1200
1152
1155
091*6
1533
1232
1236
1237
1238
121*0
121*2
1232
1236
1250
0902
il*l*5
12V
1251*
1256
1257
1258
1259
1252
1251*
1019
1653
11*35
11*33
Transect
Location
Station
Al
A2
A3
Al*
A5
A6
Bl
B2
Al
A2
A3
Al*
A5
A6
Bl
B2
Al
A2
A3
Alt
A5
A6
Bl
B2
Al
A2
A3
Al*
A5
A6
Bl
B2
Total P
Water mg/1
Te»p °G PO),
2 - ll*th Street Bridge
13
13.5
11
11
11
10.5
9 .1*35
10
10
10
10
7
7
7.5 .381*
8
.351
5.5
6 .278
Inorganic P
mg/1 TKN
PO), mg/1 N
.138
.112
.11*3
.11*3
.138
.138
.11*0
.11*8
.150
.11*8
.090
.128
.092
.122
.228
.210
.225
.272
.231
.298
.331
.338
.353
.31*9
.Ii08
.393
.291*
.279
.308-
.335
.31*0
.330
.329
.316
.308
.31*3
.31*8
.305
.311*
• 39U
mg/1
.llli
.022
ND
.018
.151*
.182
.7li9
.758
• 7li
.73
.75
.77
.78
.75
.75
.76
.85
.88
.93
1.02
.979
.805
.81il
1.05
NH3
M/l H
.873
.018
.076
.115
.095
.125
.030
.033
.029
.Oli3
.Olili
.062
.038
.035
.029
.01*1
.059
.053
.072
.01*7
'
.117
.127
.111*
ND Not detectaole
-------
-------
Sample
Number
9110302
0318
0502
0602
0702
0802
1002
1019
1202
1219
1502
1702
1719
1902
1919
9110305
0321
01(16
old?
oia s
01(19
01(20
01(21
01(22
0^23
01(24
01*25
Olt26
01(27
01(28
01(29
Ol;30
OU31
OU32
0505
0605
0705
0805
1005
1022
1117
1118
1119
1120
1121
1122
1123
112it
1125
1126
1127
1128
1129
1130
1131
1132
1133
Date
Sample
Taken
11-3
11-5
11-6
11-7
11-8
11-10
11-12
ll-l!(
11-17
11-19
11-3
11-lt
11-5
11-6
11-7
11-8
11-10
11-11
Time
Sample
Taken
0905
114(5
1107
1208
1336
0713
080U
1U26
0950
1539
1300
0905
11(37
1022
1701
C852
1U33
1125
illtG
lli(5
111(7
1151
1151
1156
111(0
ilW
111(9
1151
115U
1156
111(4
1151
115U
1156
iol(7
1153
1325
0703
0755
11(13
111(2
1139
1136
1133
1126
1123
1118
1139
1136
1133
1126
1123
1118
1133
1126
1123
1118
Transect
Location
Station
Stat
Al
A2
Aj
A4
A5
A6
A7
Bl
B2
B3
Bit
B5
Bo
01
02
C3
Ck
Al
A?
A3
Alt
A5
A6
A7
Bl
B2
B3
Bit
B5
B6
Cl
C2
C3
Clt
Total P
Water mg/1
Terip °C POj,
2B - Memorial Bridge
13
1(4
I?
11.5
11
10
9 . 30k
10
1C
ic. 5
10
6.5
('
7 .402
e
ion 3 - Hairier Point
lit
15.5
11.5
11
11
12
12 l.!(9
10
Inorganic P
ng/1
P0|,
.083
.109
.079
.125
.092
.12?
.212
.IbO
.209
.290
.255
.277
* 2 J«-
.317
.263
• 512
• ~*2,?
.15)
.1"!
.192
.178
.532
.61(0
.628
.192
.181(
.17U
.539
.610
.657
.45u
.517
.64C
.6U5
.091
.131
.101
.870
.OUO
.208
.271
.280
.300
.309
.565
.815
1.05
.337
.372
.352
.665
.855
1.11
.372
.730
.908
1.12
N02+N0,
TKN mg/1
mg/1 N NO^-N
.01(1
ND
.022
.020
.180
.301
.804
.762
• 90
• 9C
• rAj
l.C4
.c.;c
• : r'<
. lr
..'li
• -4(
KD
.021
.0/6
.2oe
• 35a
. TIP
• i 4
.69
.67
.66
.46
.48
•47
.69
.68
.66
• 5o
.48
.It?
• 67
• 51
• US
• 47
NH3
m^/1 N
• 382
.015
.104
.11'.)
.090
.1-=0
.( 3('
.C2"
.01(3
.( ^1
.tt'a
_,- r-
,L ^
.("'1
.( ' "
1 cc:
• 99t
.085
.122
.10^
l.Git
i\ 1 }
.L4l
.cjjr;
.07'
.C93
.091
.57
• ( 3
°2
'.C48
.096
.106
.594
.720
.917
. 107
.60
.77
.91
3 Not detectable
-------
-------
10
Sample
Number
69111205
122?
1417
1418
1419
1420
1421
1422
1423
1424
1425
1426
1427
11*28
L'*r 9
1430
11*31
143?
1433
i£o5
1705
1722
1817
Ifl8
1819
1820
1821
1822
1823
1821*
182^
1826
1827
1828
182°
1830
1831
1832
1833
1905
1922
1940
?503
2603
69H0304
0320
0504
0604
0704
08o4
1004
1021
Date
Sample
Taken
11-12
11-13
11-14
11-17
11-18
11-19
ll-?4
ll-?6
11-3
11-5
11-6
11-7
11-8
11-10
Time
Sample
Taken
0940
1525
1216
1215
1212
1210
1205
120?
1200
1215
121?
1210
1205
1202
1200
me
1:05
120?
12 00
1245
0855
142?
1246
1243
1240
1238
1235
1932
1229
1243
1240
123&
1235
1232
1229
1238
1235
1232
1??9
1012
1645
i4?7
11*26
0855
1437
1056
1158
1329
0706
0758
1416
Transect
Location
Station 3
Al
/.2
A3
A4
A5
A6
A7
Bl
B2
B3
B4
B5
B6
Cl
C?
C3
0*
Al
A?
A3
A4
A5
A6
A7
Bl
B2
B3
B4
B5
B6
Cl
C2
C3
C4
Station
Water
Temp °G
- Haines
11
10
10.5
9. ^
9 '
10
10
6
5-5
3A - East
13
14.5
11.5
11
11
io.S
9.5
10
Total P Inorganic P
mg/1 mg/1 TKN
PO), POI| mg/1 N
Point -continued
.990
.250
.330
.314
.322
.349
.383
.381
.434
.373
.358
.364
.381
.415
.435
.394
.373
.415
.436
.451
.291
1.07
.365
.320
.343
.356
.390
.530
.481
.353
.365
.376
.406
.350
.332
.251
.409
.491
.463
.511 .362
.685
.398
.380
.354
Potomac Park
.150
.185
.090
.125
.102
.126
.437 .310
.212
N02+N0,
mg/1
N03-N
.56
.80
.78
.816
.817
.647
.824
.968
.014
.071
. ND
.018
.104
.138
.649
.758
NH,
B«/I N
1.05
.040
.348
.21*1
.902
.386
.593
.148
.100
.174
.075
.117
.124
.165
.271
.041
ND Not detectable
-------
-------
11
Sample
Number
1112014
1?21
I5ol*
1701*
1721
1901*
1921
2502
2602
'110305
0322
01*33
01*31*
0/435
01*36
01437
01438
01*39
01*1*0
01*1*1
01*1*2
01*1*3
01*1*1*
oi*l*5
01*1*6
0506
0606
0706
0806
1006
1023
1131*
1135
1136
1137
1138
1139
111*0
111*1
111*2
111*3
111*1*
111*5
111*6
• lli*7
1206
1223
11*31*
11*35
11*36
11*37
11*38
11*39
11*1*0
11*1*1
11*1*2
Date
Sample
Taken
11-12
11-11*
11-17
11-19
11-21*
11-26
11-3
11-1*
11-5
11-6
11-7
11-8
11-10
11-11
11-12
11-13
Time
Sample
Taken
091*3
1528
121*7
0859
1U30
1011*
161*8
11*30
11*29
0852
11*28
1220
1217
1215
1209
1206
1205
121?
1209
1206
1205
1209
1206
1209
1209
101*1
111*7
1319
0700
0752
11*08
1106
1102
1056
1051
lol*5
101*2
1102
1051
10i*5
101*2
1051
101*5
1051
iol*5
0937
i5?i
11^2
H5i
1150
111*2
1137
1135
1151
llt*2
1137
Total P
Transect Water mg''l
Location Temp °C PC ]
Station 3A - East Potomac Park
10
10
10
H
i'_
; .'*!_;
3
•',
5.5 .526
Station 30 - ianter Point, National .-
i5 '
17
Al
A2
A3
Al*
A5
A6
Bl
B2
B3
Bl*
Cl
C2
Dl
D2
13
11.5
12
11.5
12.5 1.93
11.5
Al
A2
A3
Al*
A5
A6
Bl
B2
B3
Bl*
01
02
Dl
D?
12
11
Al
A2
A3
Al*
A6
Bl
B2
B3
Inorganic P
mg 1 TKN
PCj: mg/1 N
-continued
.263
.''61
.30)4
.262
.292
• ? ?- '• '
.390
.3Q5
'.ii'port
.512
MO
1.30
.955
.'05
. , 60
.b85
.l*Qr
!675
.693
.571
.900
.81*5
. '30
.[70
.371i
.291
.160
2.1*7
1.23
.1*02
.870
.350
.1*09
l.'P
l.rl
iiU6
J53
1.1*?
l!t*7
1.19
1.1*2
1.31
1.30
• !*2r
1.33
.312
• 53V
1.13
1.143
1.66
.935
1.10
.855
mg/1 J
NO^-N
. 7 5
.8"
.93
.986
.r>2"
.69'!
.85'
1 . 07
29k
. j i
.21*2
.21*3
.215
.253
.316
.1*37
.67
.60
.1*6
.'46
.1*7
.67
.1*6
.1*5
• 1*7
.1*7
.1*6
.1*7
• u1?
.1*8
.63
ffflj
mg/1 N
.16
. C'53
.10
,0j!*
.('k
.12-,
.109
.LlCC
79^
'- '. 0 ""
.61*0
.520
.321*
2.?6
1.15
.275
.32
.066
.17
i.ll
1.21
1.09
.093
1.0^
1.18
1.1^
.88
1.12
1.00
1 . 09
2 .C7
.35
-------
-------
12
Sample
Ilumber
9H144:
1444
1145
1146
11/4.'
1506
1^06
1723
1834
Ife35
1836
1837
1838
1839
1840
1841
1842
1843
1844
l84r'
1846
1906
1923
2601
2002
2003
200J4
2005
2006
2007
2008
2009
2010
2504
2604
9110307
0323
0447
0448
0449
o45o
o45i
0452
0453
0454
0435
0456
0507
0607
0707
0807
IOC''
1024
1148
Date
Sample
Taken
11-13
11-14
11-1 (
11-18
11-19
11-20
11-24
11-26
11-3
11-4
11-5
11-6
11-7
11-10
11-11
Tijne
Sample
Taken
Station
1135
1142
1137
1142
1137
1241
0850
1425
1218
1215'
1210
1206
1203
1218
1210
1206
1203
1210
1206
1210
1206
1010
1641
1300
1252
1249
1300
1251
1249
1300
1251
1300
1251
1422
1423
0844
14?^
1242
1240
1237
1236
1233
1230
1236
1233
1230
1233
1036
1144
1315
0656
0747
1403
103 r-
Transect
Location
3C - Hunter Point
B4
01
02
01
J2
A2
A3
A4
A5
A6
Bl
B2
B3
B4
Cl
C?
Dl
D2
A4
A5
A6
B2
B3
B4
Cl
02
Dl
D2
Station )
Al
A2
A3
A4
A5
A6
Bl
B2
B3
Cl
Al
Total P Inorganic P
Water mg/1 mg/1 TKN
Temp *C P04 PO^ mg/1 N
, National Airport -continued
1.18
1.07
.677
.755
.930
11 1.28
8.5 .375
9.5 1.69
2.10
.324
.732
.790
1.06
1.45
.843
.610
1.03
.870
.678
.712
.685
9 .673 .464
11 2.06
.345
.374
.427
.400
.378
.430
.391
.377
.380
.385
8 . .398
6.5 .486
4 - Belleirae
15 1.69
16 >3.0
1.71
1.75
3.98
2.90
2.87
3-17
5.42
1.56
4.92
5.45
13.5 .730
12 '.222
11.5 1.96
12.5 2.27 1.51
11.5 .695
1.17
N02+N03
mg/1
NOo-N
.67
.878
.817
.677
.782
.861
.338
• 325
.248
LA
.207
.308
.290
.401
.63
NH3
mg/1 N
1.28
.252
1.56
.363
1.87
.163
>2.0
>2.0
.928
.512
.390
1.90
1.79
.520
.60
V Laboi atorv accident
-------
-------
13
Sample
Number
>9111l49
1150
1151
1152
1153
1154
1155
1156
1157
1207
1224
1448
1449
iU5o
1451
1452
1453
1454
1455
1456
1457
1507
1707
1721;
1847
1848
I8k9
1850
1851
1852
1853
185U
1855
1856
1907
1924
1943
2011
2012
2013
2014
2015
2016
2017
2018
2019
2505
2605
59110308
0324
0457
0458
0459
oU6o
0461
0462
0463
0464
0465
Bate
Sample
Taken
11-11
11-12
11-13
11-14
11-17
11-18
11-19
11-20
11-24
11-26
11-3
11-4
Time
Sample
Taken
1034
1032
1030
1027
1024
1030
1027
1024
1027
093C.
1517
1127
1126
1100
1121
1121
1121
1124
1121
1120
1121
1240
084?
1422
1156
1155
1153
1151
1148
1147
1151
1148
1147
1148
1006
1636
1244
1241
1239
1238
1234
1239
1237
1234
1237
1419
o84o
1422
1301
1255
1259
1252
1301
1255
1259
1252
1301
Total P
Transect Water ~.g/'l
Location Temp °C P04
Station 4 - Bellevv.e -continued
A2
A3
A4
• i "•
1 6
Bl
B?
B;
Cl
l.\".
11
Al
A 2
A3
-4
A 5
16
Bl
B?
B3
Cl
11.5
8.5
10.5
:.l
A2
A3
A4
A5
A6
Bl
B2
B3
Cl
9 .989
11
1.36
A2
A3
A4
A5
A6
Bl
B2
B3
Cl
8.5
7 .651
Station 4A - Above Blue Plains STP
16.5
16.5
Al
A2
A3
A.I}
*i
82
B3
B4
Cl
Inorganic P NC^+KOs
mg/1 TKN mg/1 J NH,
POJi mg/1 N NCh-N mg/1 N
. 64-: . 54 • 5?
1.53 -45 1.1H
l.r'5 .^J 1. '(
1.6} .'w 1.^
1.74 -u2 1. ''
l.-r .46 1.1':
1.6^ .44 i. :•
1.76 .43 1.4'
1.37 .^ -16
2. '-6 . ;8 , . '1
.673 .r''c- .6(
.885
.680
.915
1.43
3.04
2.92
1.31
1.71
2.70
1.33
1.99 .60 1.80
.446 .932 .495
2.80 .;46 2.38
.935
?.oo
2.71
1.15
2.21
5.56
1.65
1.43
1.45
.8/5
.732 .661 .706
2.32 .;8l 1.93
.381
.433
.435
• U31
• 5C3
.565
.462
.505
.462
.398 .836 .181
2.79 -775 >2.0
3.0 .407 >2.0
3.98
4.70
5.91
5.20
lu?o
4.25
3 95
^ • x ,'
4.92
4.00
-------
-------
Sample
n.^ei
6TLlOl*66
1*'!'
1*6
/
6
' r r
r
1 •(
r~~;
115
11 .'9
1160
1161
116'
1163
1161*
1161
1166
1167
1168
1169
120'1
1^5
11*53
il*59
11*60
ll*6l
11*62
11*63
11*61*
11*65
11*66
11*67
11*6:
11*69
1506
170-;
1725
1357
i :;"
iK9
1360
1361
1062
1863
1861*
1865
1866
1867
1368
1903
isr5
191*9
? o; r
Date
Sample
Taken
11-1*
n-5
11-6
11- ('
11-
11-1C
11-11
11-12
11-13
11-11*
11-17
ll-ld
11-19
11-; o
Tiie
Saiiiple
Taken
1255
12 5
-------
-------
15
Sample
Number
69112021
2022
2023
2021*
2025
2026
2027
2028
2029
2030
2031
2506
2606
69110309
0325
01*69
01*70
01*71
01*72
01*73
01*7 1*
ol*75
01*76
01*77
0509
0609
0709
0809
1009
1026
1170
1171
1172
1173
1171*
1175
1176
1177
1178
1209
1226
11*70
11*71
11*72
11*73
11*71*
11*75
11*76
11*77
11*78
1509
1709
1726
1869
Date
Sample
Taken
11-20
11-21*
11-26
11-3
11-1*
11-5
11-6
11-7
11-8
11-10
11-11
11-12
11-13
11-11*
11-17
11-18
Time
Sample
Taken
1226
1223
12,18
1227
1225
1223
1218
1227
1225
1222
1218
11*15
11*15
0837
11*19
1311*
1318
1321
1325
1326
1311*
1318
1318
1311*
1025
1131*
1301
0650
071*0
1351*
0950
0951*
0957
0957
1000
0950
0954
0950
0951*
0925
1501*
1050
lol*7
1055
101*7
1057
1050
101*7
1050
101*7
1232
081*1
11*17
1119
Transect
Location
Station
A2
A3
Alt
Bl
B2
B3
Bl*
Cl
02
03
Ci*
Al
A2
A3
Al*
A5
Bl
B2
Cl
02
Al
A2
A3
Al*
A5
Bl
B2
Cl
C2
Al
A2
A3
Al*
Bl
B2
01
G2
Al
Total P Inorganic P
Water rag/1 mg/1 TKN
Temp °G POi POl* mg/1 N
1* A - Above Blue Plains STP -continued
.820
.99C
1.25
I.o5
./35
l.ol*
1.22
.865
.600
1.08
1.27
9 1.60
6 2.385
Station 5 - WW Bridge
16 ^3,0,
16 ->*.L
4.63
4.80
!*.92
4.9C
'4.93
1*.1*5
li.31*
U.81*
111 2.08
12.5 1.1*7
12 1.85
11.5 2.1*1*
11.5 2.91* 2.19
12 l.ll*
2.33
2.22
2.23
2.21
2.19
2.35
2.26
2.31*
2.27
11.5 2.21
12 1.1*8
1.96
1.91*
1.93
1.95
2.01*
2.00
1.86
2.12
?.02
12 ?.28
Q 1.65
9.5 2.08
2.13
mg/1
NO.,-N
.81*5
.655
• 4"".
.32")
LA
.217
.1*60
.372
. 37Q
.39
.38
.37
• 32
.32
.39
.37
.1*0
.38
.1*2
• 51*
.1*6
.878
.691
NH
mg/1 N
1.1*-
,>,"> . ,
; ' _(
1.92
1.1*3
• 575
1*.20
2.30
.902
2.23
2.16
2.18
2.21
2.07
2.22
2.15
2.22
2.16
2.1*1
l.Ol*
2.06
1.3r<
'
LA Laboratory accident
-------
-------
16
Sample
Number
69111870
1871
1872
1873
18"!*
1875
1876
1909
1926
191*1*
2032
2033
2035
2036
2037
2038
ro39
2507
2607
69110310
0326
01*78
01*79
Ol*8o
Ol*8i
01*82
0/*83
01*81;
01*85
01*86
ol*87
01*88
01*89
01*90
01*91
OglO
0610
0710
0810
1010
1027
1179
1180
Il8l
1182
1183
118U
1186
1187
1188
1189
1190
1191
1192
Date
Sample
Taken
11-18
11-19
11-20
11-21*
11-26
11-3
11-1*
11-5
11-6
11-7
11-8
11-10
11-11
Time
Sample
Taken
1122
1121*
1125
1119
1122
1119
1122
0957
1625
111*7
111*9
1151
1153
111*7
111*9
111*7
111*9
11*12
11*12
0832
11*11*
1355
1353
1350
131*2
131*0
1350
131*2
131*0
1350
131*2
131*0
135C
131*2
131*0
1020
1129
1257
061*6
0736
131*6
091*1*
091*2
0937
0932
0927
0937
0932
0927
0937
0932
0927
0937
0932
0927
Transect
Location
A2
A3
Al*
Bl
B2
Cl
C2
Al
A2
A3
Al*
Bl
B2
Cl
C2
Al
A2
A3
Al*
A5
Bl
B2
B3
Cl
C2
C3
Dl
D2
D3
Al
A2
A3
Al*
A5
Bl
B2
B3
Cl
C2
03
Dl
D2
D3
Total P Inorganic P
Water mg/1 mg/1 TKN
Temp *C P0|( P0|, mg/1 N
Station 5 - WW Bridge -continued
2.U2
2.11
2.07
2.19
2.1*7
2.21
2.50
10 3.86 2.26
10.5 2.31*
2.1*1
1.01*
1.03
1.1*3
1.59
1.37
1.03
1.05
1.05
9 1.86
8.5 3.209
Station 5A - Rosier Bluff
16 >3.0
15 2.79
1*.60
1*.69
1*.61*
2.51*
3.57
3.65
3.80
3.93
3.90
3.90
3-98
1*.00
1*.02
1*.17
15 3-38
13 3.07
12 1.76
11 3-63
11 3.33 2.69
12 1.73
3-98
1*.22
1*.06
1*.10
l*.oo
l*.oo
1*.10
l*.oo
1*.18
It. 1/t
1*.06
1*.18
1*.20
1*.06
mg/13
NO^-N
.722
.735
1.03
.606
.605
.387
LA
.282
.589
.1*13
.21*6
.19
.1*6
.28
.31
.28
.33
.31*
.29
.37
.37
.31*
• 37
.38
.33
NH,
BE/I N
1.65
2.09
1.08
>2.0
>2.0
5.65
3.25
1.67
1*.85
2.98
1.75
8.61
2.35
2.22
3.31*
1.96
2.09
2.25
2.16
2.50
2.kk
2.07
2.07
2.1*7
2.25
LA Laboratory accident
-------
-------
17
Sample
Number
>9111210
1227
11*79
ll*8C
11*81
11*82
11*83
IkBk
11*85
11*86
11*87
11*88
11*89
11*90
11*91
11*92
1510
1710
1727
1877
1878
1879
i860
1881
1882
1883
1881;
1885
1886
1887
1888
1889
1890
1910
1927
201*0
201*1
20li2
201*3
201*1*
201*5
201*6
201*7
201*8
201*9
2050
2051
2052
2053
2508
2608
120101
Date
Sample
Taken
11-12
11-13
ll-ll*
11-17
11-18
11-19
11-20
11-21*
11-26
12-1
Time
Sample
Taken
0921
11*58
101*2
101*0
1037
1030
1027
1037
1030
1027
1037
1030
1027
1037
1030
1027
1230
0837
11*13
1111
1110
1105
1102
1057
1105
1102
1057
1105
1102
1057
1105
1102
1057
0951*
1621
111*0
1138
1131*
1128
1125
1131*
1128
1125
1131*
1128
1125
1131*
1128
1125
11*07
11*08
1217
Transect
Location
Station
Al
A2
A3
Al*
A5
Bl
B2
B3
Cl
C2
C3
Dl
D2
D3
Al
A2
A3
Al*
A5
Bl
B2
B3
Cl
C2
03
Dl
D2
D3
Al
A2
A3
Al*
A5
Bl
B2
B3
Cl
C2-
03
Dl
D2
D3
Total P Inorganic P NOj+NO-,
Water mg/1 mg/1 TKK rag/'l NHn
Temp °C POli PO), mg/1 N NOj-N mg/1 K
5A - Rosier Bluff -continued
11 2.95 .1*0 2./7
12.5 2.63 .38 1.71*
2.30
2.38
2.1*2
2.50
2.1*2
2.30
2.28
2.31*
2.31*
2.1*?
2.?8
2.31*
2.38
2.36
11 2.2L .kh ?.^(-
9 1.88 .8)47 1.6U
9 2.32 .55'- MO
2.33
2.13
?.U2
2.1*1*
2.29
2.32
2.30
2.26
2.31
2.32
2.30
2.30
2.31
10 k.lf 2.60 .691* 2.13
10 2.13 .700 1.97
.975
.855
.895
.920
1.10
.935
.930
1.12
.91*5
1.07
1.17
.950
1.05
1.17
9 1.86 .BQk 1.1*C
8.5 3.538
7 1.78 .890 1.93
A Laboratory accident
-------
-------
18
Sample
Number
.li 311
'' 32 (
0492
049 3
• 4l 4
049"
>-• 496
49"'
• ;'"
(,,OC
,'4100
Ul.l
1,4! "'
04103
O''ll
0^11
oVll
0811
1011
102 f'
1193
1194
1195'
1196
1197
11 9 '3
1199
11100
lllol
1110?
11103
1?11
1228
1V;3
l4°4
l4°5
Iit96
l4°7
1.49H
1499
lUlOO
lulOl
1U102
lj'11
1/11
me.
1891
1892
1893
189.'4
1695
1896
1897
Id98
1'MQO
Date
Sample
Taken
11-3
11-4
11-5
11-6
11-7
11-8
11-10
11-11
11-12
11-13
11-lk
11-17
11-18
Time
Sample
Taken
0825
1-409
li(0o
140°
l/ll 2
1416
142 ;
142-
143 '
1'412
l4l (>
1412
llU-6
I4l6
101?
1123
12'?
06UC
0730
13U1
13U9
13U7
134:
1341
1331
1328
1325
1344
134C
13U3
1339
0^18
1453
0958
1COO
lOOij
1012
101 f
IOC '4
1012
100k
1012
1012
1225
083<
ikio
1106
1105
1101)
1100
1050
1103
105^
1102
1058
Total P
Transect Water mg/1
Location Temp °C PO^
Station 6 - Broad Creek
15.5
1U.5
Al
A'
A3
A 4
A 5
A6
A
Bl
B2
Cl
C .'
Dl
15
12
12.'
11
11 7 . 36
11. 'J
Al
A 2
A3
Ah
Ar'
A6
A7
Bl
B2
Cl
C2
11
12
Al
A2
A3
A4
A5
Bl
B2
Cl
C2
Dl
11
9
q
Al
A2
A3
AJj
A5
Bl
B2
Cl
C2
Inorganic P
mg/1 TKH
P0)t m&/l N
>3.o
2.U1
4.10
3.67
3.25
3.25
3.26
2.82
2.35
2.90
3.23
3.21
3.214
3.28
3.98
3.75
1.98
2.92
4.13
1.96
4.90
4.94
4.52
4.20
k.io
It. 18
4.2/4
4.30
4.10
4.1)4
4.28
3.0k
2.58
2.86
2.58
2.50
2.i|0
2.36
2.52
2.48
2.50
2.50
2.44
2.38
1.80
2.62
1.53
1.93
2.06
2.12
1.95
2.2k
2.18
2.28
2.26
mg/1
NO,-N
.655
.738
.409
LA
.331
.762
.599
.252
.38"
.37
.38
.46
.32
.40
.ko
.ko
.36
.35
.47
.51
.35
.50
.793
.53!;
NH3
ffls/l N
>2.0
>2.0
5.21;
il.30
2.07
4.85
2.71
2.1,3
3.38
3.00
2.51
3.78
2!59
2.62
2.1^6
2.31
2.53
2.88
1.93
2 5k
l'.7k
2.19
L..-'oratory accident
-------
-------
19
Sample
Number
Date
Sample
Taken
Time
Sample
Taken
Total P
Transect Water mg/1
Location Temp °C POJ^
Inorganic P
mg/1 TKN
POj, mg/1 N
mg/1
NO^-N
NH3
mg/1 N
Station 6 - Broad Creek -continued
9H1911
1928
191*5
2051*
2055
2056
2057
2958
2059
2060
2061
2062
2063
2061;
2065
2509
2609
120102
.9110328
oiaol*
oia 05
01*106
01*107
01*108
01*109
01*110
01*111
01*112
01*113
01*111*
olai5
01*116
01*117
01*118
0512
0612
0712
0812
1012
1029
11101*
11105
11106
11107
11108
11109
11110
11111
11112
11113
mil*
11115
11116
11117
11118
11-19
11-20
11-21*
11-26
12-1
11-3
11-1*
n-5
11-6
11-7
11-8
11-10
11-11
0951
1613
1208
1206
1201*
1200
1155
1153
H5l
1203
1159
1202
1158
1157
11*01
11*05
1206
11*00
11*55
11*59
1502
1507
1510
1512
1515
1502
1507
1502
1507
1502
1507
1502
1507
1002
ml*
121*2
0631
0722
1331
1309
1308
1306
1300
121*9
121*3
121*0
1305
1259
1301*
1258
1303
1257
1302
1256
10 3.91*
9.5
2.52
Al
A2
A3
Al*
A5
A6
A7
Bl
B2
Cl
C2
Dl
9
8.5 3.055
7
Station 7 - Piscataway Creek
15
Al
A2
A3
Al*
A5
A6
A7
Bl
B2
Cl
C2
Dl
D2
El
82
11*
12
12.5
11
11 1.58
12
Al
A2
A3
Al*
A5
A6
A7
Bl
B2
Cl
C2
Dl
D2
El
E2
2.36
2.11*
2.38
2.89
2.31*
2.21
2.26
2.17
1.96
2.28
2.30
2.28
2.25
2.25
1.97
2.01;
1.88
1.70
1.85
1.99
2.21
2.21
2.31
1.71
1.97
2.23
2.09
2.20
2.08
2.21
2.02
2.21
3.1*9
3.87
3.17
3.29
1*.OG
2.87
l*.5o
U.50
l*.6o
U.51*
h.hk
2.30
2.89
3.20
3-35
3.50
3.U8
3.1*8
3.17
3.1*8
3.1*1*
.662,
.671
.886
.856
1.05
.763
LA
.51*6
1.03
.795
.389
.1*5
.51*
• 57
.60
• 55
• 53
.51*
-55
• 55
.65
.60
.61*
.55
.59
.57
2.01
2.11
1.71;
1.96
1.79
1*.37
h.kl
2.87
1*.28
3-32
2.70
2.96
2.81
2.91;
3.12
2.81;
2.81*
2.78
2.87
2.85
3-50
3.10
2.91*
2.68
3.00
2.90
A Laboratory accident
-------
-------
20
Sample
Number
69111212
1229
14103
14104
i4io5
14106
14107
14108
14109
i4no
14111
14112
14H3
i4n4
i4n5
1512
1712
1729
18101
18102
18103
18104
18105
18106
18107
18108
18109
18110
18111
18112
18113
1912
1929
1946
2066
2067
2068
2069
2070
2071
2072
2073
2074
2075
2076
2077
2078
2079
2080
2510
2610
120103
69110329
0512
0713
0813
Date
Sample
Taken
11-12
11-13
11-14
11-17
11-18
11-19
11-20
11-24
11-26
12-1
11-3
11-5
11-7
11-8
Time
Sample
Taken
0910
1443
0947
0945
0940
0935
0930
0940
0935
0940
0935
0940
0935
0940
0935
1216
0827
1402
1128
1127
1128
1119
1112
1124
1118
1123
1117
1122
1116
1121
1115
0944
1602
1145
1143
n4i
1135
1130
1128
1126
il4o
1134
1139
1133
1138
1132
1137
1131
1353
1358
1155
1350
1002
1233
0620
Traasect Water
Location Temp °C
Station 7 - Piscataway
11
12
Al
A2
A3
A4
A5
Bl
B2
Cl
C2
Dl
D2
El
E2
11
9
9
Al
A2
A3
A4
A5
Bl
B2
Cl
C2
Dl
D2
El
E2
9
10
Al
A2
A3
A4
A5
A6
A7
Bl
B2
Cl
C2
Dl
D2
El
E2
9
8.5
7
Station 8 - Dogue
14.5
14
12
10.5
Total P Inorganic P N02+N03
mg/1 mg/1 TKN mg/1
PO), PO), mg/1 N HO^-N
Creek -continued
2.89 .64
2.84 .38
2.56
2.88
2.60
2.64
2.60
2.58
2.64
2.60
2.52
2.66
2.52
2.54
2.38
2.44 .66
2.10 .634
2.30 .529
2.34
2.34
2.32
2.28
2.24
2.30
2.28
2.34
2.42
2.48
2.42
2.50
2.40
3.22 2.18 .562
2.18 .690
3.13
2.30
2.22
2.30
2.28
2.32
1.98
2.26
2.41
2.39
2.30
2.39
2.37
2.30
2.31
2.34
2.04 .804
2.604
2.05 " — • .874
Creek
1.13 1.11
3.49 .763
2. 86 .847
1.55 1.17
NH3
mg/i N
2.84
2.72
2.48
2.12
2.34
2.05
2.10
1.87
1.89
.435
4.37
2.63
1.59
-------
-------
21
Sample
Number
?111013
1030
11119
11120
11121
11122
11123
11121*
11125
11126
11127
11128
11129
11130
1213
1230
1513
1713
1730
18111*
18115
18116
18117
18118
18119
18120
18121
18122
18123
1913
1930
191*7
2081
2082
2083
2081*
2085
2086
2087
2088
2089
2090
2091
2092
2511
2611
120101*
9110330
0711*
101k
1031
11131
11132
11133
Date
Sample
Taken
11-10
11-11
11-12
11-11*
11-17
11-18
11-19
11-20
11-21*
11-26
12-1
11-3
11-7
11-10
11-11
Time
Sample
Taken
0711*
1321
1212
1208
1203
1200
1156
1152
111*8
1159
1155
1151
111*7
1151*
0905
il*3l*
H15
0818
1355
111*6
Hl*l*
111*2
1138
1135
111*3
111*1
1137
1131*
111*0
0936
1550
1117
1116
mi*
1113
1110
1106
1101*
1112
1109
1105
1103
1108
131*1*
131*9
111*6
131*1*
1227
0709
1311*
1135
1130
1127
Transect
Location
Station
Al
A2
A3
Al*
A5
A6
A7
Bl
B2
B3
Bl*
Cl
A3
Al*
A5
A6
A7
Bl
B2
B3
Bl*
Cl
Al
A2
A3
Al*
A5
A6
A7
Bl
B2
B3
Bl*
Cl
Al
A2
A3
Total P
Water mg/1
Temp °C PO),
8 - Doeue Creek -continued
11 2.33
11
11
11
10
9
8.5
9 3.1*1*
9.5
2.31*
9
8 3.151*
7
Station 8A - Gunston Cove
Ik
12
10.5 2.11
11
Inorganic P
mg/1 TKN
PO), mg/1 N
1.99
3.38
3.1*2
3.1*6
3.25
2.69
3.09
3.06
3.29
2.89
3.11*
3.23
2.88
3.09
2.28
2.95
1.89
2.32
2.10
2.38
2.1*0
2.38
2.31*
2.28
2.52
2.1*6
2.1*2
2.38
2.32
2.26
1.79
2.08
2.08
2.10
2.25
2.30
2.30
2.23
2.27
2.38
2.30
2.31
2.37
2.11
1.78
1.06
-2.51
1.77
3.1*0
2.85
2.1*9
2.69
mg/1
NCVN
1.21*
.559
.99
.81
.81*
.89
.86
.89
.91*
.56
.96
.90
.97
1.02
.95
.57
1.06
.585
.71*6
.560
.832
.663
.81*7
1.10
1.02
1.26
.703
.96
.90
.95
mg/1 N
2.26
2.78
3.38
3.93
2.63
2.90
1*.78
5.12
3.1*8
11.05
2.69
3.1*5
3-69
2.97
2.60
2.67
1.98
2.29
2.21
2.08
2.06
2.01
1.83
.1*1*7
2.56
1.95
2.73
3.09
5.13
3.91*
-------
-------
22
Sample
Number
'1111134
11135
11136
11137
11138
11139
11140
1214
1231
1714
1731
18124
18125
18126
18127
18128
18129
18130
18131
1914
1930
2093
2094
2095
2096
2097
2098
2099
20100
20101
20102
2512
2612
120105
Date
Sample
Taken
11-11
11-12
11-17
11-18
11-19
11-20
11-24
11-26
12-1
Time
Sample
Taken
1124
1121
1114
1109
1120
1113
1119
0900
1428
0812
1351
1204
1202
1159
1155
1150
1158
1154
1157
0931
1542
1057
1056
1054
1052
1050
1046
1043
1049
1045
1048
.1338
1344
1140
Transect
Location
Station
A4
A5
A6
A7
Bl
B2
Cl
A3
A4
A5
A6
A7
Bl
B2
Cl
Al
A2
A3
A4
A5
A6
A7
Bl
B2
Cl
Total P Inorganic P
Water mg/1 mg/1 TKN
Temp °C POij PO), mg/1 N
8A - Gunston Cove -continued
2.61
2.69
2.68
2.65
2.70
2.30
2.61
11 2.09
11 2.33
8.5 2.15
8.5 i 92
2i36
2.28
2.38
2.24
2.12
2.30
2.26
2.34
9 3.00 2.11
9.5 1.48
.834
1.38
1.78
1.98
2.20
2.17
2.00
2.21
2.03
2.21
9 2.05
8 2.714
7 1.62
N02+NO-3
mg/1
N03-N
1.02
1.01
1.10
1.22
1.13
1.12
1.15
1.05
.79
.641
.746
.610
.914
.640
.879
NHj
mg/l N
2.90
3.97
3.28
2.09
2.81
1.34
2.18
2.62
2.53
2.32
2.16
2.13
1.83
1.98
1.80
Station 9 - Hallowing Point
110715
1015
1032
11141
11142
11143
11144
11145
11146
ni47
11148
11149
11150
1215
1232
1715
1732
18132
18133
18134
18135
11-7
11-10
11-11
11-12
11-17
11-18
1218
0700
1305
1100
1055
1051
1043
1059
1054
1050
1053
1049
1048
0855
1420
0807
1345
1222
1219
1215
1209
Al
A2
A3
A4
Bl
B2
B3
Cl
C2
Dl
Al
A2
A3
A4
11.5 1.73
10.5 . l.$7 1-26
11 1.76
.965
1.30
1.37
1.26
1.35
1.26
1.38
1.37
1.38
1.39
10.5 1.08
11 1.84
8.5 2.07
8.5 1.62
1.25
1.78
1.77
1.67
1.17
1.31
.963
1.22
1.23
1.26
1.22
1.22
1.28
1.24
1.27
1.26
1.24
1.20
1.08
.741
.817
1.77
1.96
1.98
1.13
- 1.46
1.47
1.31
1.44
1.29
1.49
1.38
1.53
1.47
1.27
2.06
2.24
1.91
-------
-------
23
Sample
Number
118136
18137
18138
18139
18140
18141
1915
1932
1948
20103
20104
20105
20106
20107
20108
20109
20110
20111
20112
2513
2613
?0106
.0716
1016
1033'
11151
11152
11153
1H54
11155
11156
11157
11158
11159
11160
11161
11162
1216
1233
1716
1733
18142
18143
18144
18145
18146
18147
18148
18149
18150
18151
18152
18153
1916
1933
Date
Sample
Taken
11-18
11-19
11-20
11-24
11-26
12-1
11-7
11-10
11-11
11-12
11-17
11-18
11-19
Time
Sample
Taken
1219
1221
1214
1217
1213
1212
0920
1534
1038
1035
1031
1026
1037
1034
1030
1033
1029
1028
1330
1338
1122
1207
0652
1251
1028
1026
1022
1019
1013
1024
1018
1012
1017
1011
1015
1010
0850
1411
0800
1337
1245
1242
1238
1236
1231
1241
1235
1230
1234
1229
1233
1228
0917
1523
Transect
Location
Station
Bl
B2
B3
Cl
02
Dl
Al
A2
A3
A4
Bl
B2
B3
Cl
C2
Dl
Al
A2
A3
A4
A5
Bl
B2
B3
Cl
C2
Dl
D2
Al
A2
A3
A4
A5
Bl
B2
B3
Cl
C2
Dl
D2
Total P Inorganic P
Water mg/1 mg/1 TKN
Temp °C P0|i P0f| mg/1 N
9 - Hallowing Point -continued
1.34
1.59
1.77
1.65
1.69
1.68
8.5 3-50 1.90
10 1.41
1.56
1.29
1.72
1.78
1.57
1.81
1.84
1.91
1.86
1.90
1.88
9 2.09
8 3.978
7 1.58
Station 10 - Indian Head
11 1.20
10.5 1.H8 1.04
11 1.35
.880
.845
.885
.880
.825
.890
.835
.795
.770
.790
.840
.805
10.5 1.01
11 1.35
8.5 1.83
9.5 1.49
1.13
1.28
1.47
l!47
1.33
1.'49
1.53
1.53
1.52
1.52
8.5 2.66 1.38
10 1.20
mg/1
NO^-N
.670
.979
.623
.890
1.23
1.31
.979
1.23
1.23
1.23
1.23
1.23
1.23
1.23
1.25
1.22
1.23
1.24
1.29
1.22
1.16
.902
.901
.860
1.07
NH3
mg/1 N
2.00
1.72
2.04
1.80
1.13
.956
i.4o
.69
.71
.76
.72
.71
.77
.70
.62
.6?
.62
.73
.63
1.03
i.4i
2.04
1.78
1.75
1.52
-------
-------
2k
Sample
Number
Date
Sample
Taken
Time
Sample
Taken
Transect Water
Location Temp °C
Total P Inorganic P
mg/1 mg/1 TO
P04 POli me/1 N
mg/1
N03-N
NH
mg/1 N
Station 10 - Indian Head -continued
J1120113
20115
20116
20117
20118
20119
20120
20121
20122
20123
20121;
2514
2611;
120107
J1111163
1217
123k
1717
1734
1917
2515
2615
120108
?U25l6
2616
120109
J110333
0339
0533
0617
0717
1017
1036
1235
lSi4
1747
1748
1959
2519
2520
120112
11-20
11-21;
11-26
12-1
11-11
11-12
11-17
11-19
11-21;
11-26
12-1
11-21;
11-26
12-1
11-3
11-1;
11-5
11-6
11-7
11-10
11-11
11-12
11-14
11-17
11-18
11-19
11-21
11-21;
12-1
1017
1015
1012
1010
1005
101k
1009
1004
1008
1003
1007
1002
1320
1330
1112
0942
0830
1339
07 kO
1320
0900
1300
1309
1048
1250
1256
1040
iltio
1050
1055
1140
1130
1130
1500
1120
1030
1130
1200
0955
1130
1030
1055
Al
A2
A3
Al;
A5
Bl
B2
B3
01
02
Dl
D2
8.5
8
7
Station 11 -
11
11
8
9.5
9
8
8
7
Station 12
8
8
7
Station CB3
1U
Ik
11
11
9
11
11
10
10
V
9
5
7
5
3.371;
Possum Point
1.72
2.791
- Sandy Point
3.0kk
- Great Falls
.746
.252
.231
• k03
.489
.469
.431
.728
• kkl
.453
.393
.238
.388
1.11
l.lk
1.52
1.62
1.72
1.19
1.53
1.63
1.59
1.66
1.60
1.61
1.83
1.55
.547
.532
.440
1.00
..787
.670
1.14
1.00
.830
.745
.068
.067
.080
.106
.200
.210
.217
.602
.260
.256
.221;
.287
.301
.386
.241
1.69
.810
1.08
3.21
7.32
.496
.052
.372
1.05
1.88
.966
.758
.882
.764
.352
.641
.888
.87
.83
1.05
1.09
.873
.992
.845
.937
.886
.919
ND
.095
.200
.389
.922
.799
1.50
i.ok
.99
.965
1.02
1.02
1.608
1.16
.990
1.91
1.84
.37
.37
.40
1.18
.769
1.15
1.51
1.19
.955
.887
.120
.119
.251
.110
.194
.231
1.30
.126
.104
.190
.058
.126
.266
.124
.054
Not detectable
-------
-------
Ill SURVEY RESULTS
1969
POTOMAC ESTUARY PHOSPHATE STUM-
SEWAGE TREATMENT PLANTS DIURNAL STUDY
AWNAPOLIS FIELD OFFICE
Sample
Number
11053d
35
36
37
38
39
l*o
Date
Sample
Taken
11-3
11-1*
Time
Sample
Taken
21*00
-QfcOO
0800
1200
1600
2000
21*00
Flow
mgd
Station
23
10
12
27
22
25
26
Total P Inorganic
mg/1 mg/1
PO], PO),
1 - Alexandria
70.16
71*. 51*
62.51
51*. 61*
71.26
76.72
73.1*1*
32.5
1*1.5
31*. 3
26.6
38.1*
1*6.9
1*1*. 5
P
TKN
mg/1 N
1.53
20.9
1.93
28.1
27.8
16.3
17.0
N02+N03
mg/1
NO^-N
.ND
.010
.207
.1*03
.051
.126
.013
NH^
mg/1 N
18.5
19.5
20.6
26.2
20.2
29.5
23.1*
Station 2 - Arlington
110718
19
20
21
22
23
21*
iio5Ui
1*2
1*3
14*
1*5
1*6
111735
36
37
38
39
1*0
1*1
1*2
1*3
I*U
1*5
1*6
11-3
11-1*
11-3
11-1*
11-9
11-10
11-11
21*00
01*00
0800
1200
1600
2000
21*
2UOO
01*00
0800
1200
1600
2000
21*00
01*00
0800
1200
1600
2000
21*00
01*00
0800
1200
1600
2000
Station
Station 1* -
1.0
6.5
2.0
2.0
1.0
1.5
5
ii.O
2.0
3.0
2.0
2.5
35-61*
32.18
32.29
25.59
30.95
31.28
36.76
3 - Blue Plains
53.77
53.77
52.68
1*6.67
1*6.12
51.58
Fairfax - Westgat,e
1*1*. 26
1*2.27
26.61*
21.27
55.16
59.89
39.85
39.85
31*. 35
50.86
1*0.07
37.65
19.5
28.5
32.7
29.3
31.0
33.0
32.9
31.0
28.2
25.7
21.5
20.3
21.2
7.39
1*.58
3-56
12.1
10.0
5.36
8.37
17.0
20.0
17.0
21.6
30.1
33.0
11.5
11*. 5
18.0
17.7
18.3
19.2
11*. 9
.022
.023
.026
.021
.019
.022
11*. 7
1.71*
.388
13.7
12.8
9.6
12.3
15.9
16.5
13.1
15.9
19.7
19.1*
D Not detectable
-------
-------
Ill SURVEY RESULTS
1969
POTCMAC ESTUARY PHOSPHATE
SEWAGE TREATMENT PLANTS
2l*-HOUH CCMPOSITES EFFLUENT
AUNAPOLIS FIELO OFFICE
26
Sample
Number
6911033U
38
051*7
69110725
26
27
69110336
051*8
0618
6911051*9
0619
0728
Date
Sample
Taken
11-2
11-3
11-1*
11-3
11-5
11-3
11-5
11-1*
n-5
11-7
Flow
mgd
Station
19
18
18
Station
17.1*
17.1*
18
Station
261.82
251.66
238.61
Station 1* -
Total P Inorganic P
mg/1 mg/1
PO], PO],
1 - Alexandria
1*0.51 28.2
lili.86 til.O
55.96 35-7
2 - Arlington
31*. 52 31*. 7
32.85 31*. 1
27.82 31*. 3
3 - Blue Plains
27.88 21*. 7
39.56 26.8
23.69 16.8
Fairfax - Westgate
1*5.03 30.1
37.21 26.5
31*. 60 27.0
TKN
mg/1 N
18.0
25.8
28.8
11*. 1*
6.21*
5.59
17.6
21.9
71.2
25.5
109.2
280.0
mg/13
NOi-N
.015
15-9
16.2
81.5
.025
.016
.01*7
.025
.017
ND
NH3
mg/1 N
21*.5
28.0
?5.6
12.0
10.6
12.3
21.2
18.1
18.9
20.8
27.8
30. li
ND Hot detectable
-------
-------
BELLEVUE-*
ABOVE BLUE PLAINS STP -
WOODRO* WILSON BRIDGE -
1969
SCALE N MIES
POTOMAC ESTUARY
-------
-------
Chesapeake Technical Support Laboratory
Middle Atlantic Region
Environmental Protection Agency
Water Quality Office
1966 - 1968 Data Report
Number 11
NUTRIENT DATA ON SEDIMENT SAMPLES
OF THE
POTOMAC ESTUARY
by
James W. Marks
and
Orterio Villa Jr.
Laboratory Staff
Donald W. Lear, Jr., Chief, Laboratory Section
Anna R. Favorite, Statistician
-------
TABLE OF CONTENTS
Page
I INTRODUCTION 1
II STATION LOCATIONS 7
III SURVEY RESULTS 13
IV MAP appendix i
-------
I INTRODUCTION
A. Purpose and Scope
During the years of 1966 through 1968 the Chesapeake
Technical Support Laboratory, Middle Atlantic Region, Federal
Water Quality Administration conducted three separate surveys
of the bottom sediments of the tidal portion of the Potomac
River. The purpose of these surveys was to determine the
existing quality of the river bottom. The results of these
investigations are presented in this report.
B. General Remarks
In 1966 the portion of the Potomac River between the lljth
Street Bridge in Washington, D.C. to the U.S. Route 301 Bridge
near Morgantown, Maryland, was sampled three times, March-May,
June-August and September-October. In 196? the same portion
of the river was sampled twice, March-April and again during
September. In 1968 that portion of the river between the U.S.
Route 301 Bridge to the mouth of the river at Point Lookout
was sampled once during February.
C. Sampling Procedures
Sediment samples were collected using a weighed core
sampling device. This device consisted of a length of pipe
containing a plastic core liner and a heavy weight (core bomb)
for forcing the core pipe into the sediments. The sediment
-------
was removed from the plastic liner by means of an extruder rod.
The top five centimeters from each of four separate core samples
from each sampling station were blended as the sediment sample
for that station. The samples were then returned to the
laboratory and frozen for later analysis.
B. Measured Parameters and Analytical Methods
1. Total Phosphorus
Reference: Menzel, D.W. and Corwin, N. 1965. The
Measurement of Total Phosphorus in Seawater Based on the
Liberation of Organically Bound Fractions by Persulfate
Oxidation. Limnology and Oceanography, 10: 280-282.
Murphy, J. and Riley, J.P. 1962. A Modified Single
Solution Method for the Determination of Phosphate in Natural
Waters. Analytica Chimica Acta, 27: 31-36.
A measured volume of the wet sediment sample, of which
the dry-solids content is known,was placed in a 16 oz. prescription
bottle and diluted to 300ml with distilled water. The sample was
then agitated on a mechanical shaker for 30 minutes. An aliquot
of the well mixed, diluted sample was removed for analysis. Total
Phosphate was determined after persulfate oxidation of the sample
in an autoclave at 15 psi for 30 minutes and millipore filtration
to remove unwanted solids. The resultant ortho-phosphate was
then determined colorimetrically as the molybdenum-blue complex
-------
3
with the optical density measured at 882 mt-i. The results were
calculated as milligrams POj.-P per gram of dry sample.
2. Inorganic Phosphorus
Reference: Murphy, J. and Riley, J.P.. 1962. A
Modified Single Solution Method for the Determination of
Phosphate in Natural Waters. Analytica Chimica Acta, 2?: 31-36.
A measured volume of the wet sediment sample, of which
the dry-solids content is known,was placed in a 16 oz. pre-
scription bottle and diluted to 300ml with distilled water. The
sample was then agitated on a mechanical shaker for 30 minutes.
An aliquot of the well mixed, diluted sample was removed for
analysis. Inorganic Phosphorus was determined, after millipore
filtration to remove unwanted solids, colorimetrically as the
molybdenum-blue complex with the optical density measured at
882 mn. The results were calculated as milligrams PO^-P per
gram of dry sample.
3. Total Kjeldahl Nitrogen
Reference: Standard Methods for the Examination of
Water and Wastewater, 12 ed.. 1965.
A measured volume of the wet sediment sample, of which
the dry-solids content is known, was placed in a 16 oz. pre-
scription bottle and diluted to 300 ml with distilled water. The
sample was then agitated on a mechanical shaker for 30 minutes.
-------
/ k
/
/
An aliquot of the well mixed, diluted •sample was removed for
analysis. Total Kjeldahl Nitrogen includes Ammonia and
Organic Nitrogen and was determined by the standard micro-
Kjeldahl procedure. The sample was digested in the presence
of strong acid to convert the organic nitrogen to ammonia.
The ammonia was then distilled, collected in boric acid
solution, nesslerized and determined colorimetrically with
the optical density measured at \$$ m^. The results were
calculated as milligrams TKN-N per gram of dry sample.
h. Ammonia Nitrogen
Reference: Standard Methods for the Examination of
Water and Wastewater, 12 ed.. 1965.
A measured volume of the wet sediment sample, of which
the dry-solids content is known,was placed in a 16 oz pre-
scription bottle and diluted to 300 ml with distilled water.
The sample was then agitated on a mechanical shaker for 30
minutes. An aliquot of the well mixed, diluted sample was
removed for analysis. The aliquot was diluted to a known
volume and the pH adjusted to 7.2-7.k and distilled, collect-
ing the distillate in 2% boric acid. An aliquot of the
distillate was nesslerized and the ammonia nitrogen con-
centration determined colorimetrically with the optical density
measured at 1|25 mM-. The results were calculated as milligrams
of NH^-N per gram of dry sample.
-------
5
5>. Chemical Oxygen Demand
Reference: Standard Methods for the Examination of
Water and Waste-water, 12 ed.. 1965.
A measured volume of the wet sediment sample, of which
the dry-solids content is known, was placed in a 16 oz. pre-
scription bottle and diluted to 300 ml with distilled water.
The sample was then agitated on a mechanical shaker for 30
minutes. An aliquot of the well mixed, diluted sample was
removed for analysis. The Chemical Oxygen Demand was deter-
mined by the standard dichromate procedure as outlined in the
above reference. The results were calculated as milligrams
C per grams of dry solids.
6. Wet Weight
A measured volume of the well mixed sediment sample
was placed on a tared evaporating dish and weighed on an
analytical balance. The results were reported as grams of
sediment per milliliter of sample.
7. Dry Weight
Reference: Standard Methods for the Examination of
Water and Wastewater, 12 ed.. 196£.
The resultant sample from the Wet Weight procedure was
placed in a drying oven at 103°C overnight. The sample was
removed from the drying oven, placed in a dessicator to cool
-------
6
for one hour, and weighed on an analytical balance. The result-
ant residue weight was reported as grams of sediment per railliliter
of sample.
8. Volatile Weight
Reference: Standard Methods for the Examination of
Water and Wastewater, 12 ed.. 196£.
The resultant sample from the Dry Weight procedure
was placed in a muffle furnace at 600°C for one hour. The sample
was then removed from the muffle furnace, placed in a dessicator
to cool for one hour, and weighed on an analytical balance. The
resultant residue was reported as grains of sediment per milliliter
of sample.
9. Chlorophyll a
Reference: Gorham, Eville, Chlorophyll Derivatives in
Surface Muds From the English Lakes, Department of Botany,
University of Toronto, Canada.
A pre weighed sample of the sediment was shaken
mechanically for three periods of 5-10 minutes with successive
20-30 ml portions of 90$ acetone. The extracts were filtered
and the residues leached with 90$ acetone to give a final filtrate
of 100 ml. The optical density was measured at 668 mM- and 750 mp..
The concentration was calculated as Chlorophyll a in M-g/g.
-------
II STATION LOCATIONS
Station
Number
Description
Approximate Location
Depth
Feet
(6.0)
Street Bridge
Haines Point
(TA)
Bellevue
(9.7)
Woodrow Wilson Bridge
(Hunting Creek)
(11.8)
A Center of Channel
opposite buoy N "10" 20
B In shallows midway
between buoy N "10" and
Tidal Basin outlet 7
A In shallows midway
between west shore and
buoy C "1" 10
B In Channel at mid-channel
buoy R B Qk PI 25
C South Capitol St.Bridge
in Anacostia Channel
opposite mid-channel
buoy RB "N" 20
A In shallows midway between
west shore and channel k
B In Channel opposite
23' Bell 25
C In shallows midway between
23' Bell and east shore 5
A In shallows 300' from
mouth of Hunting Creek k
B In Channel off Buoy
FL R "2" 2k
C In shallows of Buoy R "2" 5
-------
Station
Number Description
6 Broad Creek A
(15-1)
B
C
Approximate Location
In shallows midway between
Buoy N"86" and west shore
In Channel south of N"86"
In Broad Creek opposite
Indian Queen Bluff
Depth
(ft.)
*
30
3
D In Broad Creek midway
between Indian Queen Bluff
and east shore
PL scataway Creek
(18.0)
8 Dogue Creek -
Marshall Hall
(22.0)
Hallowing Point
(26.0)
B
C
&
D
B
C
D
B
In shallows midway between
Sheridan Point and Buoy
# PL "77"
In Channel midway between
FL "77" and N "76"
60
In Piscataway Creek at third
point between Channel and
east edge of Bay 5
In Dogue Creek opposite
boathouse k
At mouth of Dogue Creek
300' north of Channel Buoy
# FL G "67"
In Channel opposite FL G "67" 26
In shallows midway between
FL G "67" and Marshall Hall
Cupola 17
In shallows approximately
300' off Hallowing Point
10
In center of Channel between
Hallowing Point and
Pomonkey Point 35
-------
Station
Number
9
10
11
12
13
^
0^
Description
Hallowing Point
(26.0)
Indian Head -
(29.5)
Occoquan Bay
(31.8)
Possum Point
(37.1)
Sandy Point
(40.5)
Smith Point
.^
f' ^f
^^
C
A
B
C
D
A
&
B
C
A
&
B
C
D
A
^
B
C
Approximate Location
In shallows between Pomonkey
Point and Channel
In Occoquan Bay off
Sandy Point
In Occoquan Bay off
Buoy FL "2"
In shallows north of Channel
approximately midway between
Channel and north shore
opposite Buoy N "5V
In Channel opposite
Buoy N "54"
In Channel at 1/3 points
between FL 6 11 sec. and
R nkk"
In shallows midway between
Moss Point and R 'W south
In shallows approximately
1/3 points between N"40"
and west shore
In Channel west of N "kO"
In Mallows Bay
In Aqula Creek between
^"~ Brent Point and ^:Cxrney Pt.
In Acn>^— '""Sek near
_/•— ^7 s "6"
Just north of Buoy N"2"
Depth
(ft.)
7
7
6
15
50
26
15
10 -
15
25
k
5
9
5
E
In Channel midway between
Buoy N"2" and FL "27" 16
In Channel between N"27"
and N"28"
-------
10
Station
Number
Description
Approximate Location
Depth
(ft.)
Ik Maryland Point
(52.0)
A In shallow water about
800 ft. from south shore
B In Channel southwest of
Buoy #21
C In shallow water about
800 ft. from north shore
30 -
ko
8
15 Between Stuart Point
and Nanjemoy Creek
(58.2)
A Midway between •west (south)
shore and N "11"
B In Channel just southeast
of Buoy N "11"
C In Channel north of N"10"
D In Nanjemoy Creek opposite
Blossom Point
16
16 .5 Mile North of
Route 301 Bridge
(67.0)
IT Port Tobacco River
to Mathias Point
(63.0)
In Nanjemoy Creek opposite
Kings Creek
A West of Channel midway
between Buoy FL "1" and
west shore 3
B In Channel near Buoy C"N" 60
A In Channel between Fl.
Buoy 5 and Can Buoy 3 33
B Mid-channel 8
C Off Buoy SI 8
-------
11
Station
Number
Description
Approximate Location
Depth
(ft.)
18
19
20
21
RLccowaxen Creek to
Stony Point
(75-0)
Mouth of Wicondco River
to Stratford Cliffs
(81.0)
Poplar Hill Creek to
Ragged Point Beach
B
C
A
B
C
Breton Bay to Nbmini Bay A
(88.0)
B
C
D
E
B
Between W Or N"S" and
W Or C P 10
Mid-Channel NE Fl."29" 10
Off Piccowaxen Creek
point (south) 14
Off Stratford Cliffs and
Nond.nl Cliffs 15
Near RB N in Channel 2k
Mouth of tficomico River
off Cobb Island near
IC-Stf" 13
Off Buoy N 2 13
Mid-Channel, off
Kingcopsico Point 20
Mid-Channel, off Buoy RB N 3^
Off Buoy Fl 2 16
Between Buoy N 2 and Fl 2,
mid-channel St. Clements
Bay Ik
North of Ragged Point Fl
west of BWN "51B" 8
Mid-Channel between
Buoy BW N 55 B and
Buoy BW N 51 B kk
Off mouth of Poplar Hill
Creek 17
-------
12
Station
Number
22
23
Description
St. Mary's River to
Yeocoadco River A
(104.0)
B
C
D
E
Point Lookout A
(111.0)
B
C
D
Approximate Location
Mouth of Yeocomico River
Fl 2
Between Fl 2 and
BW N 49 B
Mid- Channel between
BW N 49 B and RB Fl
M'juth of St. Mary's River
off Fl 3
St. Mary's River south of
Fl 2 Priest Point
Off mouth of Hun Creek
Mid-Channel SW of
B W N 47 B
Mid-Channel, west of Fl 4
South of Cornfield Point
Depth
(ft.)
19
31
56
28
24
16
35
44
35
-------
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UXATION MAP
-I4lh STREET BRIDGE
-HAINES POINT
-BELLEVUE
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-BROAD CREEK
-PISCATAWAY CREEK
-DOGUE CREEK
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-PORT TOBACCO
-PICCOWAXEN CREEK
-WICOMICO RIVER
SCALE M HLES
NUTRIENT DATA ON SEDIMENT SAMPLES
POTOMAC ESTUARY
APPENDIX
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Chesapeake Technical Support Laboratory-
Middle Atlantic Region
Environmental Protection Agency
Water Quality Office
1969 Data Report
Number 12
WATER QUALITY SURVEY
OF THE
HEAD OF THE CHESAPEAKE BAY
MARYLAND TRIBUTARIES
by
James W. Marks
and
Orterio Villa, Jr.
Laboratory Staff
Jean Klaczkiewicz, Chemist
Thomas E. Kleczynski, Biologist
Evelyn P. McPherson, Technician
Anna R. Favorite, Statistician
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TABLE OF CONTENTS
Page
I INTRODUCTION 1
II STATION LOCATIONS 6
III SURVEY RESULTS 7
IV MAP o o appendix i
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I INTRODUCTION
A. Purpose and Scope
During the year of 1969 the Chesapeake Technical Support
Laboratory, Middle Atlantic Region, Environmental Protection
Agency, Water Quality Office sampled the head of the bay
tributaries three times during June, July and September.
Tributaries sampled were Sassafras River, Elk River, Bohemia
River, C and D Canal, Northeast River and two points in the
upper bay. The purpose of this survey was to determine the
levels of eutrophication of the tributaries entering the
Chesapeake Bay.
B. General Remarks
The monthly surveys included analysis for Dissolved
Oxygen, Chlorophyll a. and Phaeopigments as well as nutrients.
C. Sampling Procedures
Samples were obtained using a small submersible pump
attached to a wire cable calibrated in feet. The pump was
lowered to the desired depth and allowed to run for two minutes
before receiving samples in plastic cubitainers. Dissolved
oxygen (DO) samples were obtained directly from the pump outlet
extending to the bottom of a conventional 300 ml DO bottle.
The sample was allowed to overflow the bottle several times
and then fixed immediately. All samples were immediately
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2
stored on ice and analysis started upon return to the Chesapeake
Technical Support Laboratory, generally within two hours of
sampling.
D, Measured Parameters and Analytical Methods
1. Water temperature was read from a Beckman Salinometer.
2. Light extinction, in inches, was made with a 12"
(30 cm) white secchi disk.
3. The pH measurements were made with a field pH meter.
li. Conductivity was read from a calibrated Beckman
Salinometer.
5- Dissolved Oxygen
Reference: Standard Methods for the Examination of
Water and Wastewater, 12 ed.. 1965.
Dissolved Oxygen was determined by the azide
modification of the basic Winkler method with the titration
done potentiometrically with a Fisher automatic "titralyzer."
6. Total Phosphorus
Reference: Menzel, D.W. and Corwin, N. 1965.
The Measurement of Total Phosphorus in Seawater Based on the
Liberation of Organically Bound Fractions by Persulfate Oxidation.
Limonology and Oceanography, 10: 280-282.
Murphy, J. and Riley, J<,P.. 1962. A Modified Single
Solution Method for the Determination of Phosphate in Natural
Waters. Analytica Chimica Acta, 27: 31-36.
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3
Total Phosphorus was determined after persulfate
oxidation of the sample in an autoclave at 15> psi for 30
minutes. The resultant ortho-phosphate was then determined
colorimetrically as the molybdenum-blue complex with the
optical density measured at 882 mp..
7. Inorganic Phosphorus
Reference: Murphy, J. and Riley, J.P.. 1962. A
Modified Single Solution Method for the Determination of
Phosphate in Natural Waters. Analytica Chimica Acta, 27: 31-36.
Inorganic Phosphorus was determined colorimetrically
as the molybdenum-blue complex with the optical density measured
at 882 mn.
8. Total Kjeldahl Nitrogen
Reference: Standard Methods for the Examination of
Water and Wastewater, 12 ed.. 1965>.
Total Kjeldahl Nitrogen includes ammonia and organic
nitrogen and was determined by the standard micro-kjeldahl
procedure. The sample was digested in the presence of strong
acid to convert the organic nitrogen to ammonia. The ammonia
was then distilled, collected in boric acid solution,
nesslerized and determined colorimetrically.
9. Nitrate -*• Nitrite
Reference: A Practical Handbook of Seawater Analysis,
J.D.H. Strickland and T.R. Parsons, Bulletin 167, Fisheries
Research Board of Canada, Ottawa, Canada. 1968.
-------
h
Nitrate plus nitrite nitrogen was determined by the
cadmium reduction of nitrate to nitrite and subsequent
diazotization with sulphanilamide and N-(l-napthl)-
ethylenediamine dihydrochloride. The results were calculated
as nitrite nitrogen.
10. Ammonia
Reference: Southeast Water Laboratory, FWQA,
methodology for the colorimetric determination of ammonia
by the phenol-hypochlorite reaction.
FWPCA Methods for Chemical Analysis of Water and
Wastes, 1969 ed., pp 137-1U3.
Ammonia nitrogen was determined by automation of the
phenol-hypochlorite procedure as described in the Southeast Water
Laboratory Methodology and later adopted as the official FWPCA
procedure. The intensity of the indophenol blue color, formed by
the reaction of ammonia with alkaline phenol hypochlorite, was
increased using sodium nitroprusside as an intensifying agent.
The optical density was measured at 630 mp. and calculated as NH-N.
11. Chlorophyll a
Reference: A Practical Handbook of Seawater Analysis,
J.D.H. Strickland and T.R. Parsons, Bulletin 16?, Fisheries
Research Board of Canada, Ottawa, Canada. 1968.
Chlorophyll a was determined by extraction of millipore-
filtered samples in 90$ acetone and read spectrophotometrically.
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12. Phae opigments
Reference: A Practical Handbook of Seawater Analysis,
J.D.H. Strickland and T.R. Parsons, Bulletin 16?, Fisheries
Research Board of Canada, Ottawa, Canada. 1968.
After Chlorophyll a had been determined the sample
was acidified with one normal HC1. The absorbancy of the
acidified sample was obtained and the percentage of Chlorophyll a
present as phaeopigments was calculated.
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II STATION LOCATIONS
STATION NUMBER STATION LOCATION
1 Sassafras River, Georgetown Bridge
2 Sassafras River, Nun 6
3 Sassafras River, Can 3
k Sassafras River, off Betterton
5 Bay, midway between Nun 2 and Bell 1
6 Bay, Turkey Point, Nun 6
7 Elk River, Nun 10
8 Bohemia River, Nun 2
9 Behemia River, above bridge
10 Elk River, Can 15
11 C and D Canal, Nun 26
12 Elk River, Nun 6
13 Elk River, Nun Ik
ill Northeast River, Nun 2
15 Northeast River, Nun 10
16 Northeast River, Nun 18
17 Northeast River, mouth of creek
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WATER QUALITY SURVEY
HEAD OF CHESAPEAKE BAY TRIBUTARIES
-------
Chesapeake Technical Support Laboratory
Middle Atlantic Region
Environmental Protection Agency
Water Quality Office
1968 Data Report
Number 13
WATER QUALITY SURVEY
OF THE
CHESAPEAKE BAY
IN THE VICINITY OF
SANDY POINT
Staff
James ¥. Marks, Chief, Laboratory Section
Donald W. Lear, Jr., Chief, Ecology Section
Orterio Villa, Jr., Chemist
Anna R. Favorite, Statistician
Evelyn P. McPherson, Technician
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TABLE OF CONTENTS
Page
I INTRODUCTION ' 1
II STATION LOCATIONS 6
III SURVEY RESULTS 7
IV MAP appendix i
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I INTRODUCTION
A. Purpose and Scope
Water quality observations were maintained on a monthly basis
by the Chesapeake Technical Support Laboratory, Environmental
Protection Agency, Federal Water Quality Administration, in the
Chesapeake Bay in the vicinity of Sandy Point during 1968.
Objectives of these studies were:
1. Observe the extent and duration of oxygen depleted areas
during the warmer months.
?. Determine horizonal and vertical stratification through
thermoclines and haloclines.
3. Measure existing water quality in terms of DO, BOD,
temperature, salinity, nutrients, turbidity and chlorophyll.
k- Compare data with other extant in the literature to
determine water quality trends in the area.
5>. Determine baseline conditions before the introduction of
a sewage treatment plant directly into Bay waters in the
vicinity of SanJy Point.
B. General Remarks
Cruises were made monthly as far as was practicable on five
transects from a north section above Gibson Island to the southern-
most section at Hacketts Point, near Annapolis, Maryland. In
addition a station at the lower Craighill Channel range light, off
Baltimore Harbor, was occupied in October and December.
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C. Sampling Procedures
Surface samples for chemical analysis were obtained by
dipping a plastic bucket or large funnel into the bay water
with a minimum of agitation. Samples were retained in plastic
one-gallon "cubitainers." Dissolved oxygen (DO) samples were
obtained by siphoning from the bucket or by attaching a tube to
the funnel outlet and extending it to the bottom of a
conventional 300 ml DO bottle. The bottle was overfilled
twice without excessive agitation, and the DO fixed immediately.
Temperature was measured in the dipped bucket immediately
after sampling.-
Bottom samples were taken using a plastic Van Dorn sampler.
Sampling procedures were otherwise identical to those used for
surface samples. All samples were stored on ice. Analysis
was started immediately on return to the Chesapeake Technical
Support Laboratory, generally within two hours of sampling.
D. Measured Parameters and Analytical Methods
1. Water temperature was read from a Beckman Salinometer.
2. Light extinction, in inches, was made with a. 12 inch
(30 cm) white secchi disk.
3. The pH measurements were made with a field pH meter.
I).. Salinity was determined with a calibrated Beckman
Salinometer.
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3
5. Dissolved Oxygen
Reference: Standard Methods for the Examination of
Water and Wastewater, 12 ed.. 1965.
Dissolved Oxygen was determined by the azide
modification of the basic Winkler method with the titration
done potentiometrically with a Fisher automatic "titralyzer."
6. Biochemical Oxygen Demand
Reference: Standard Methods for the Examination of
Water and Wastewater, 12 ed.. 1965.
The Biochemical Oxygen Demand was determined by the
azide modification of the basic Winkler method with the
titration done potentiometrically with a Fisher automatic
"titralyzer." The samples as received were diluted if
necesssary and transferred to standard 300 ml BOD bottles in
triplicate. One initial DO and two final DO determinations
were used throughout. Incubation was started immediately at
20 °C and continued for five days after which they were titrated.
7. Total Phosphorus
Reference: Menzel, D.W. and Corwin, N. 1965.
The Measurement of Total Phosphorus in Seawater Based on
the Liberation of Organically Bound Fractions by Persulfate
Oxidation. Limonology and Oceanography, 10: 280-282.
Murphy, J. and Riley, J.P.. 1962. A Modified Single
-------
h
Solution Method for the Determination of Phosphate in Natural
Waters. Analytica Chimica Acta, 27: 31-36.
Total Phosphorus was determined after persulfate
oxidation of the sample in an autoclave at l£ psi for 30
minutes. The resultant ortho-phosphate was then determined
colorimetrically as the molybdenum-blue complex with the
optical density measured at 882 mH.
8. Total Kjeldahl Nitrogen
Reference: Standard Methods for the Examination of
Water and Wastewater, 12 ed.. 1965.
Total Kjeldahl Nitrogen includes ammonia and organic
nitrogen and was determined by the standard micro-kjeldahl
procedure. The sample was digested in the presence of strong
acid to convert the organic nitrogen to ammonia. The ammonia
was then distilled, collected in boric acid solution,
nesslerized and determined colorimetrically.
9. Nitrate + Nitrite
Reference: A Manual of Sea Water Analysis, J.D.H.
Strickland and T.R. ?irsons, 2nd. ed., Queen's Printer and
Controller of Stationery, Ottawa, Canada. 1965.
Nitrate plus Nitrite nitrogen was determined by
the cadmium reduction of nitrate to nitrite and subsequent
diazotization with sulphanilamide and N-(l-napthyl)-
ethylenediamine dihydrochloride. The results were calculated
as nitrite nitrogen.
-------
-------
10. Chlorophyll a
Reference: A Manual of Sea Water Analysis, J.D.H.
Strickland and T.R. Parsons, 2nd. ed., Queen's Printer and
Controller of Stationery, Ottawa, Canada. 1965.
Chlorophyll a was determined by extraction of
millipore-filtered samples in 9Q% acetone and read
spec trophotometrically.
11. Turbidity
Turbidity was determined with a Hach photoelectric
nephelometer, calibrated in Jackson Turbidity Units.
12. Phytoplankton
Identification and counting was done on fresh
unpreserved samples in a Sedgwick-Rafter counting cell
under the microscope. Identification and counting was
done by Mr. James LaBuy, biologist at the Chesapeake
Technical Support Laboratory.
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II STATION LOCATIONS
Transect Station Location
A 1 Off tower at Windmill Point
2 Red Flasher "loc"
3 Black and white buoy "13B"
B 1 Red Flasher "2" Magothy River
2 Red Nun "1*0"
3 Black Flasher, bell "1"
C 1 Off house at Tydings-on-the-Bay
2 Red Flasher, bell "2C"
3 Edge of dumping grounds
D 1 Off Sandy Point
2 Red Flasher, gong "8"
3 South edge of dumping grounds
E 1 Off Hacketts Point
2 Red Flasher, gong "it"
3 Off Matapeake ferry slip
Craighill Light
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WATER QUALITY SURVEY
OF THE
CHESAPEAKE BAY
IN THE VICINITY OF
SANDY POINT
APPENDIX i
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Chesapeake Technical Support Laboratory
Region III
Office of Water Programs
Environmental Protection Agency
1969 Data Report
Number lk
WATER QUALITY SURVEY
OF THE
CHESAPEAKE BAY
IN THE VICINITY OF
SANDY POINT
Staff
James W. Marks, Chief, Laboratory Section
Orterio Villa, Jr., Chemist
Anna R. Favorite, Statistician
Evelyn P. McPherson, Technician
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TABLE OF CONTENTS
Page
I INTRODUCTION 1
II STATION LOCATIONS 7
III SURVEY RESULTS 9
IV MAP appendix i
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I INTRODUCTION
A. Purpose and Scope
Water quality observations were maintained on a monthly
basis by the Chesapeake Technical Support Laboratory;, Office of
Water Programs, Environmental Protection Agency, in the Chesa-
peake Bay in the vicinity of Sandy Point during 1969.
Objectives of these studies were to:
1. Continue observation of the extent and duration of
oxygen depleted areas during the warmer months.
2. Continue verification of horizonal and vertical
stratification through thermoclines and haloclines.
3- Determine trends in existing water quality in terms of
DO, BOD, temperature, salinity, turbidity, nutrients, and
chlorophyll.
k. Determine baseline conditions before the introduction of
a sewage treatment plant discharging directly into Bay waters
in the vicirlty of Sandy Point.
B. General Remarks
Cruises were made monthly as far as was practicable on eight
transects from a northern section across the mouth of the Patapsco
River to the southern-most section across the mouth of the Severn
River. In addition, a station at the lower Craighill Channel range-
light off Baltimore Harbor was occupied in March and June.
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C. Sampling Procedures
Samples were obtained using a small submersible pump
attached to a wire cable calibrated in feet. The pump was
lowered to the desired depth and allowed to run for two
minutes before receiving samples in plastic cubitainers.
Dissolved oxygen (DO) samples were obtained directly from
the pump outlet extending to the bottom of a conventional
300 ml DO bottle. The sample was allowed to overflow the
bottle several times without excessive agitation, and the
DO fixed immediately. All samples were stored on ice.
Analysis was started immediately on return to the Chesapeake
Technical Support Laboratory, generally within two hours of
sampling.
D. Measured Parameters and Analytical Methods
1. Water temperature was read from a Beckman Salinometer.
2. Light extinction, in inches, was made with a 12 inch
(30 cm) white secchi disk.
3« Salinity was determined with a calibrated Beckman
Salinometer.
k' Conductivity was read from a calibrated Beckman
Saainometer.
5- Dissolved Oxygen
Reference: Standard Methods for the Examination of
Water and Wastewater, 12 ed.. 1965.
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3
Dissolved Oxygen was determined by the azide
modification of the basic Winkler method with the titration
done potentiometrically with a Fisher automatic "titralyzer."
6. Biochemical Oxygen Demand
Reference: Standard Methods for the Examination of
Water and Wastewater, 12 ed.. 1965-
The Biochemical Oxygen Demand was determined by the
azide modification of the basic Winkler method with the
titration done potentiometrically with a Fisher automatic
"titralyzer." The samples as received were diluted if
necessary and transferred to standard 300 ml BOD bottles in
triplicate. One initial DO and two final DO determinations
were used throughout. Incubation was started immediately at
20°C and continued for five days after which they were titrated,
7. Total Phosphorus
Reference: Menzel, D.W. and Corwin, N.. 1965-
The Measurement of Total Phosphorus in Seawater Based on
the Liberation of Organically Bound Fractions by Persulfate
Oxidation. Limonology and Oceanography, 10: 280-282.
Murphy, J. and Riley, J.P.. 1962. A Modified Single
Solution Method for the Determination of Phosphate in Natural
Waters. Analytica Chimica Acta, 2?: 31-36.
-------
1*
Total Phosphorus was determined after persulfate
oxidation of the sample in an autoclave at 15> psi for 30
minutes. The resultant ortho-phosphate was then determined
colorimetrically as the molybdenum-blue complex with the
optical density measured at 882 mn.
8. Inorganic Phosphorus
Reference: Murphy, J. and Riley, J.P.. 1962. A
Modified Single Solution Method for the Determination of
Phosphate in Natural Waters. Analytica Chimica Acta, 2?:
31-36.
Inorganic Phosphorus was determined by automation
of the above procedure using the Technicon "AutoAnalyzer."
The molybdenum-blue complex formed was determined
colorimetrically with the optical density measured at 885 mp..
9. Total Kjeldahl Nitrogen
Reference: Standard Methods for the Examination of
Water and Wastewater, 12 ed.. 1965.
Total Kjeldahl Nitrogen includes ammonia and organic
nitrogen and was determined by the standard micro-kjeldahl
procedure. The sample was digested in the presence of strong
acid to convert the organic nitrogen to ammonia. The ammonia
was then distilled, collected in boric acid solution,
nesslerized and determined colorimetrically.
-------
10. Nitrate + Nitrite
Reference: A Practical Handbook of Seawater
Analysis, J.D.H. Strickland and T.R. Parsons, Bulletin
167, Fisheries Research Board of Canada, Ottawa, Canada,
1968.
Nitrate plus nitrite nitrogen was determined by
automation of the above procedure using the Technicon
"AutoAnalyzer." This procedure utilizes cadmium reduction
of nitrate to nitrite and subsequent diazotization with
sulfanilamide and N-(l-naphthyl)-ethylenediamine dihydrochloride
with the optical density measured at 5>^0 mjJ.. The results were
calculated as nitrite nitrogen.
11. Ammonia
Reference: Southeast Water Laboratory, FWQA,
Methodology for the colorimetric determination of ammonia
by the phenol-hypochlorite reaction.
FWPCA Methods for Chemical Analysis of Water and
Wastes, November 1969.
Ammonia nitrogen was determined by automation of the
phenol-hypochlorite procedure as described in the Southeast
Water Laboratory Methodology and later adopted as the official
FWPCA procedure. The intensity of the indophenol blue color,
formed by the reaction of ammonia with alkaline phenol
-------
6
hypochlorite, was increased using solium nitroprusside as
an intensifying agent. The optical density was measured
at 630 nui and calculated as NH-.-N.
12. Chlorophyll a
Reference: A Practical Handbook of Seawater
Analysis, J.D.H. Strickland and T.R. Parsons, Bulletin
167, Fisheries Research Board of Canada, Ottawa, Canada.
1968.
Chlorophyll a was determined by extraction of
millipore-filtered samples in 9G% acetone and read
spectrophotometrically.
13. Total Carbon
Reference: Beckman Instruments, Bulletin It059.
Total Carbon was determined with a Dow-Beckman
Carbonaceous Analyser using the sample as received.
Ik- Total Organic Carbon
Reference: Beckman Instruments, Bulletin kO$9-
Total Organic Carbon was determined with a Dow-
Beckman Carbonaceous Analyser after the sample had been
purged with nitrogen gas for five minutes.
-------
II STATION LOCATIONS
Transect Station Location
AA 1 Buoy HBC
2 Buoy R 28C
A 1 Off tower at Windmill Point
2 Red Flasher "loc"
3 Black and white buoy "13B"
B 1 Red Flasher "2" Magothy River
2 Red Nun "i|C"
3 Black Flasher, bell "1"
C 1 Off house at Tydings-on-the-Bay
2 Red Flasher, bell "2C"
3 Edge of dumping grounds
D 1 Off Sandy Point
2 Red Flasher, gong "8"
3 South edge of dumping grounds
E 1 Off Hacketts Point
2 Red Flasher, gong "k"
3 Off Matapeake ferry slip
F . 1 Tolly's Point, Buoy "33"
2 Mid-Bay
3 Brickhouse Bar, Buoy "20B"
-------
Transect Station Location
G 1 Off Bembe Beach
2 Bay Buoy (bell)
Craighill Light
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WATER QUALITY SURVEY
OF THE
CHESAPEAKE BAY
IN THE VICINfTY OF
SANDY POtfIT
-------
U.S. ENVIRONMENTAL PROTECTION AGENCY
Annapolis Field Office
Annapolis Science Center
Annapolis, Maryland 21401
DATA REPORTS
T! -S E.r'A. Kc£iW- HI .„,
j; 4ra«i Colter for Environmental
JS°Sh Street (3PM52)
ia. PA 19103
Volume 10
-------
-------
Table of Contents
Volume 10
9 Water Quality Survey of the Potomac Estuary - 1965-1966
10 Water Quality Survey of the Annapolis Metro Area - 1967
11 Nutrient Data on Sediment Samples of the Potomac Estuary
1966-1968
12 1969 Head of the Bay Tributaries
13 Water Quality Survey of the Chesapeake Bay in the
Vicinity of Sandy Point - 1968
14 Water Quality Survey of the Chesapeake Bay in the
Vicinity of Sandy Point - 1969
15 Water Quality Survey of the Patuxent River - 1967
16 Water Quality Survey of the Patuxent River - 1968
17 Water Quality Survey of the Patuxent River - 1969
18 Water Quality of the Potomac Estuary Transects, Intensive
and Southeast Water Laboratory Cooperative Study - 1969
19 Water Quality Survey of the Potomac Estuary Phosphate
Tracer Study - 1969
-------
PUBLICATIONS
U.S. ENVIRONMENTAL PROTECTION AGENCY
REGION III
ANNAPOLIS FIELD OFFICE*
VOLUME 1
Technical Reports
5 A Technical Assessment of Current Water Quality
Conditions and Factors Affecting Water Quality in
the Upper Potomac Estuary
6 Sanitary Bacteriology of the Upper Potomac Estuary
7 The Potomac Estuary Mathematical Model
9 Nutrients in the Potomac River Basin
11 Optimal Release Sequences for Water Quality Control
in Multiple Reservoir Systems
VOLUME 2
Technical Reports
13 Mine Drainage in the North Branch Potomac River Basin
15 Nutrients in the Upper Potomac River Basin
17 Upper Potomac River Basin Water Quality Assessment
VOLUME 3
Technical Reports
19 Potomac-Piscataway Dye Release and Wastewater
Assimilation Studies
21 LNEPLT
23 XYPLOT
25 PLOT3D
* Formerly CB-SRBP, U.S. Department of Health, Education,
and Welfare; CFS-FWPCA, and CTSL-FWQA, Middle Atlantic
Region, U.S. Department of the Interior
-------
VOLUME 3 (continued)
Technical Reports
27 Water Quality and Wastewater Loadings - Upper Potomac
Estuary during 1969
VOLUME 4
Technical Reports
29 Step Backward Regression
31 Relative Contributions of Nutrients to the Potomac
River Basin from Various Sources
33 Mathematical Model Studies of Water Quality in the
Potomac Estuary
35 Water Resource - Water Supply Study of the Potomac
Estuary
VOLUME 5
Technical Reports
37 Nutrient Transport and Dissolved Oxygen Budget
Studies in the Potomac Estuary
39 Preliminary Analyses of the Wastewater and Assimilation
Capacities of the Anacostia Tidal River System
41 Current Water Quality Conditions and Investigations
in the Upper Potomac River Tidal System
43 Physical Data of the Potomac River Tidal System
Including Mathematical Model Segmentation
45 Nutrient Management in the Potomac Estuary
VOLUME 6
Technical Reports
Chesapeake Bay Nutrient Input Study
49 Heavy Metals Analyses of Bottom Sediment in the
Potomac River Estuary
-------
VOLUME 6 (continued)
Technical Reports
51 A System of Mathematical Models for Water Quality
Management
52 Numerical Method for Groundwater Hydraulics
53 Upper Potomac Estuary Eutrophication Control
Requirements
54- AUT0-QUAL Modelling System
Supplement AUT0-QUAL Modelling System: Modification for
to 54 Non-Point Source Loadings
V /' VOLUME 7
Technical Reports
J55" Water Quality Conditions in the Chesapeake Bay System
56 Nutrient Enrichment and Control Requirements in the
Upper Chesapeake Bay
57 The Potomac River Estuary in the Washington
Metropolitan Area - A History of its Water Quality
Problems and their Solution
VOLUME 8
Technical Reports
58 Application of AUT0-QUAL Modelling System to the
Patuxent River Basin
59 Distribution of Metals in Baltimore Harbor Sediments
60 Summary and Conclusions - Nutrient Transport and
Accountability in the Lower Susquehanna River Basin
VOLUME 9
Data Reports
Water Quality Survey, James River and Selected
Tributaries - October 1969
Water Quality Survey in the North Branch Potomac River
between Cumberland and Luke, Maryland - August 1967
-------
VOLUME 9 (continued)
Data Reports
Investigation of Water Quality in Chesapeake Bay and
Tributaries at Aberdeen Proving Ground, Department
of the Army, Aberdeen, Maryland - October-December 1967
Biological Survey of the Upper Potomac River and
Selected Tributaries - 1966-1968
Water Quality Survey of the Eastern Shore Chesapeake
Bay, Wicomico River, Pocomoke River, Nanticoke River,
Marshall Creek, Bunting Branch, and Chincoteague Bay -
Summer 1967
Head of Bay Study - Water Quality Survey of Northeast
River, Elk River, C & D Canal, Bohemia River, Sassafras
River and Upper Chesapeake Bay - Summer 1968 - Head ot
Bay Tributaries
Water Quality Survey of the Potomac Estuary - 1967
Water Quality Survey of the Potomac Estuary - 1968
Wastewater Treatment Plant Nutrient Survey - 1966-1967
Cooperative Bacteriological Study - Upper Chesapeake Bay
Dredging Spoil Disposal - Cruise Report No. 11
VOLUME 10
Data Reports
9 Water Quality Survey of the Potomac Estuary - 1965-1966
10 Water Quality Survey of the Annapolis Metro Area - 1967
11 Nutrient Data on Sediment Samples of the Potomac Estuary
1966-1968
12 1969 Head of the Bay Tributaries
13 Water Quality Survey of the Chesapeake Bay in the
Vicinity of Sandy Point - 1968
14 Water Quality Survey of the Chesapeake Bay in the
Vicinity of Sandy Point - 1969
-------
VOLUME 10(continued)
Data Reports
15 Water Quality Survey of the Patuxent River - 1967
16 Water Quality Survey of the Patuxent River - 1968
17 Water Quality Survey of the Patuxent River - 1969
18 Water Quality of the Potomac Estuary Transects,
Intensive and Southeast Water Laboratory Cooperative
Study - 1969
19 Water Quality Survey of the Potomac Estuary Phosphate
Tracer Study - 1969
VOLUME 11
Data Reports
20 Water Quality of the Potomac Estuary Transport Study
1969-1970
21 Water Quality Survey of the Piscataway Creek Watershed
1968-1970
22 Water Quality Survey of the Chesapeake Bay in the
Vicinity of Sandy Point - 1970
23 Water Quality Survey of the Head of the Chesapeake Bay
Maryland Tributaries - 1970-1971
24 Water Quality Survey of the Upper Chesapeake Bay
1969-1971
25 Water Quality of the Potomac Estuary Consolidated
Survey - 1970
26 Water Quality of the Potomac Estuary Dissolved Oxygen
Budget Studies - 1970
27 Potomac Estuary Wastewater Treatment Plants Survey
1970
28 Water Quality Survey of the Potomac Estuary Embayments
and Transects - 1970
29 Water Quality of the Upper Potomac Estuary Enforcement
Survey - 1970
-------
30
31
32
33
34
Appendix
to 1
Appendix
to 2
3
4
VOLUME 11 (continued)
Data Reports
Water Quality of the Potomac Estuary - Gilbert Swamp
and Allen's Fresh and Gunston Cove - 1970
Survey Results of the Chesapeake Bay Input Study -
1969-1970
Upper Chesapeake Bay Water Quality Studies - Bush River,
Spesutie Narrows and Swan Creek, C & D Canal, Chester
River, Severn River, Gunpowder, Middle and Bird Rivers -
1968-1971
Special Water Quality Surveys of the Potomac River Basin
Anacostia Estuary, Wicomico.River, St. Clement and
Breton Bays, Occoquan Bay - 1970-1971
Water Quality Survey of the Patuxent River - 1970
VOLUME 12
Working Documents
Biological Survey of the Susquehanna River and its
Tributaries between Danville, Pennsylvania and
Conowingo, Maryland
Tabulation of Bottom Organisms Observed at Sampling
Stations during the Biological Survey between Danville,
Pennsylvania and Conowingo, Maryland - November 1966
Biological Survey of the Susquehanna River and its
Tributaries between Cooperstown, New York and
Northumberland, Pennsylvnaia - January 1957
Tabulation of Bottom Organisms Observed at Sampling
Stations during the Biological Survey between Cooperstown,
New York and Northumberland, Pennsylvania - November 1966
VOLUME 13
Working Documents
Water Quality and Pollution Control Study, Mine Drainage
Chesapeake Bay-Delaware River Basins - July 1967
Biological Survey of Rock Creek (from Rockville, Maryland
to the Potomac River) October 1966
-------
VOLUME 13 (continued)
Working Documents
5 Summary of Water Quality and Waste Outfalls, Rock Creek
in Montgomery County, Maryland and the District of
Columbia - December 1966
6 Water Pollution Survey - Back River 1965 - February 1967
7 Efficiency Study of the District of Columbia Water
Pollution Control Plant - February 1967
VOLUME 14
Working Documents
8 Water Quality and Pollution Control Study - Susquehanna
River Basin from Northumberland to West Pittson
(Including the Lackawanna River Basin) March 1967
9 Water Quality and Pollution Control Study, Juniata
River Basin - March 1967
10 Water Quality and Pollution Control Study, Rappahannock
River Basin - March 1967
11 Water Quality and Pollution Control Study, Susquehanna
River Basin from Lake Otsego, New York, to Lake Lackawanna
River Confluence, Pennsylvania - April 1967
VOLUME 15
Working Documents
12 Water Quality and Pollution Control Study, York River
Basin - April 1967
13 Water Quality and Pollution Control Study, West Branch,
Susquehanna River Basin - April 1967
14 Water Quality and Pollution Control Study, James River
Basin - June 1967 ,
15 Water Quality and Pollution Control Study, Patuxent River
Basin - May 1967
-------
VOLUME 16
Working Documents
16 Water Quality and Pollution Control Study, Susquehanna
River Basin from Northumberland, Pennsylvania, to
Havre de Grace, Maryland - July 1967
17 Water Quality and Pollution Control Study, Potomac
River Basin - June 1967
18 Immediate Water Pollution Control Needs, Central Western
Shore of Chesapeake Bay Area (Magothy, Severn, South, and
West River Drainage Areas) July 1967
19 Immediate Water Pollution Control Needs, Northwest
Chesapeake Bay Area (Patapsco to Susquehanna Drainage
Basins in Maryland) August 1967
20 Immediate Water Pollution Control Needs - The Eastern
Shore of Delaware, Maryland and Virginia - September 1967
VOLUME 17
Working Documents
21 Biological Surveys of the Upper James River Basin
Covington, Clifton Forge, Big Island, Lynchburg, and
Piney River Areas - January 1968
22 Biological Survey of Antietam Creek and some of its
Tributaries from Waynesboro, Pennsylvania to Antietam,
Maryland - Potomac River Basin - February 1968
23 Biological Survey of the Monocacy River and Tributaries
from Gettysburg, Pennsylvania, to Maryland Rt. 28 Bridge
Potomac River Basin - January 1968
24 Water Quality Survey of Chesapeake Bay in the Vicinity of
Annapolis, Maryland - Summer 1967
25 Mine Drainage Pollution of the North Branch of Potomac
River - Interim Report - August 1968
26 Water Quality Survey in the Shenandoah River of the
Potomac River Basin - June 1967
27 Water Quality Survey in the James and Maury Rivers
Glasgow, Virginia - September 1967
-------
VOLUME 17 (continued)
Working Documents
28 Selected Biological Surveys in the James River Basin,
Gillie Creek in the Richmond Area, Appomattox River
in the Petersburg Area, Bailey Creek from Fort Lee
to Hopewell - April 1968
VOLUME 18
Working Documents
29 Biological Survey of the Upper and Middle Patuxent
River and some of its Tributaries - from Maryland
Route 97 Bridge near Roxbury Mills to the Maryland
Route 4 Bridge near Wayson's Corner, Maryland -
Chesapeake Drainage Basin - June 1968
30 Rock Creek Watershed - A Water Quality Study Report
March 1969
31 The Patuxent River - Water Quality Management -
Technical Evaluation - September 1969
VOLUME 19
Working Documents
Tabulation, Community and Source Facility Water Data
Maryland Portion, Chesapeake Drainage Area - October 1964
Waste Disposal Practices at Federal Installations
Patuxent River Basin - October 1964
Waste Disposal Practices at Federal Installations
Potomac River Basin below Washington, D.C.- November 1964
Waste Disposal Practices at Federal Installations
Chesapeake Bay Area of Maryland Excluding Potomac
and Patuxent River Basins - January 1965
The Potomac Estuary - Statistics and Projections -
February 1968
P^Mxent River - Cross Sections and Mass Travel
/Velocities - July 1968
-------
VOLUME 19 (continued)
Working Documents
Wastewater Inventory - Potomac River Basin -
December 1968
Wastewater Inventory - Upper Potomac River Basin -
October 1968
VOLUME 20
Technical Papers.
1 A Digital Technique for Calculating and Plotting
Dissolved Oxygen Deficits
2 A River-Mile Indexing System for Computer Application
in Storing and Retrieving Data (unavailable)
3 Oxygen Relationships in Streams, Methodology to be
Applied when Determining the Capacity of a Stream to
Assimilate Organic Wastes - October 1964
4 Estimating Diffusion Characteristics of Tidal Waters -
May 1965
5 Use of Rhodamine B Dye as a Tracer in Streams of the
Susquehanna River Basin - April 1965
6 An In-Situ Benthic Respirometer - December 1965
7 A Study of Tidal Dispersion in the Potomac River
February 1966
8 A Mathematical Model for the Potomac River - what it
has done and what it can do - December 1966
9 A Discussion and Tabulation of Diffusion Coefficients
for Tidal Waters Computed as a Function of Velocity
February 1967
10 Evaluation of Coliform Contribution by Pleasure Boats
July 1966
-------
VOLUME 21
Technical Papers
11 A Steady State Segmented Estuary Model
12 Simulation of Chloride Concentrations in the
Potomac Estuary - March 1968
13 Optimal Release Sequences for Hater Quality
Control in Multiple-Reservoir Systems - 1968
VOLUME 22
Technical Papers
Summary Report - Pollution of Back River - January 1964
Summary of Water Quality - Potomac River Basin in
Maryland - October 1965
The Role of Mathematical Models in the Potomac River
Basin Water Quality Management Program - December 1967
Use of Mathematical Models as Aids to Decision Making
in Water Quality Control - February 1968
Piscataway Creek Watershed - A Water Quality Study
Report - August 1968
VOLUME 23
Ocean Dumping Surveys
Environmental Survey of an Interim Ocean Dumpsite,
Middle Atlantic Bight - September 1973
Environmental Survey of Two Interim Dumpsites,
Middle Atlantic Bight - January 1974
Environmental Survey of Two Interim Dumpsites
Middle Atlantic Bight - Supplemental Report -
October 1974
Effects of Ocean Disposal Activities on Mid-
continental Shelf Environment off Delaware
and Maryland - January 1975
-------
VOLUME 24
1976 Annual
Current Nutrient Assessment - Upper Potomac Estuary
Current Assessment Paper No. 1
Evaluation of Western Branch Wastewater Treatment
Plant Expansion - Phases I and II
Situation Report - Potomac River
Sediment Studies in Back River Estuary, Baltimore,
Maryland
Technical Distribution of Metals in Elizabeth River Sediments
Report 61
Technical A Water Quality Modelling Study of the Delaware
Report 62 Estuary
-------
WATER QUALITY SURVEY
OF THE
POTOMAC ESTUARY
1965-1966
PATA REPORT
Uumber 9
Chec:ipeake Technical Support Laboratory
Middle Atlantic Region
Federal Water Pollution Control Administration
Iterartmetit nf the Interior
-------
-------
Chesapeake Technical Support Laboratory-
Middle Atlantic Region
Federal Water Pollution Control Administration
U.S. Department of the Interior
1965-1966 Data Report
Number 9
WATER QUALITY SURVEY
OF THE
POTOMAC ESTUARY
by
Donald W. Lear, Jr0
and
James W0 Marks
Laboratory- Staff:
Orterio Villa, Jr0, Chemist
Anna R. Favorite, Statistician
Alan I. Kirschbaum, Programmer
-------
TABLE OF CONTENTS
Page
I INTRODUCTION. «,„...„ „„. .„.„...,>.. .„.<, <,„..<,„,, i
II STATION LOCATIONS,,. ........................... 0°<, ix
III SURVEY RESULTS ... ...... 1
17 MAP 71
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I INTRODUCTION i
Ac Purpose and Sccpe
Sampling of the estuary portion of the Potomac River Basin was
initiated by the Chesapeake Technical Support Laboratory, Middle
Atlantic Region, Federal Water Pollution Control Administration
during August 1965>«> This report covers sampling done from August
1965> to September 1966. This was done to determine existing water
quality. The results of these investigations are presented in
this data report.
B. General Remarks
As the Chesapeake Technical Support Laboratory was organized
samples were taken on a somewhat irregular basisa However a two-
week intensive nutrient survey was conducted September 6-18, 1966.
C. Sampling Procedures
Surface samples for chemical analysis were obtained by dipping
a plastic bucket or large funnel into the river water with a
minimum of agitation. Samples were retained in one-gallon plastic
jugs. Dissolved oxygen (DO) samples were obtained by siphoning
from the bucket or by attaching a tube to the funnel outlet and
extending it to the bottom of a conventional 300 ml DO bottle.
The bottle was overfilled twice without excessive agitation, and
the DO fixed immediately. DO letter prefix denotes whether
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-------
ii
sample was taken at top, raiddepth or bottom, five day Biochemical
oxygen demand (BOD) at ?0BC letter prefix refers to centrifugal or
methylene blue inhibitors.
Bottom samples were taken using a plastic Van Dorn sampler.
Sampling procedures were otherwise identical to those used for
surface samples. All samples were stored on ice. Analysis was
started immediately on return to the Chesapeake Technical Support
Laboratory, generally within two hours of sampling„
D. Measured Parameters and Analytical Methods
lo Water temperature was determined using a mercury thermometer
inserted into the sample container immediately upon collection.
2. Turbidity was determined with a Hach photoelectric
nephelometer, calibrated in .Jackson Turbidity Units0
3o Light extinction, in inches, was made with a 12" (30 cm)
white secchi disk*
ijo Nonfiltrable Residue (Suspended Solids)
Reference: Standard Methods for the Examination of Water
and Wastewater, 1? ed», 1965.
The Nonfilti '••ble Residue was determined by filtering a
known volume of sample. A predried and weighed Gelman Type A
glass fiber filter was used. The filter and its contents were
then dried in an oven at 105°G, cooled and reweighed. The gain
in weight represents Nonfiltrable Residue«
-------
Ill
5. Volatile Residue (Volatile Solids)
Reference: Standard Methods for the Examination of Water
and Wastewater, 12 ecU, 1965.
The Volatile Residue was determined by placing the filter
with its residue retained after completion of the test for non-
filtrable residue in a furnace held at 600°C for one hour. The
filter papers were then cooled and reweighed. The sample was then
calculated as Volatile Residue represented by the loss in weight
from the final weight of the nonfiltrable residue test.
6B Dissolved Oxygen
Reference: Standard Methods for the Examination of Water
and Wastewater, 12 ed., 196f/t
Dissolved Oxygen vas determined by the azide modification
of the basic Winkler method vith the titration done potentiometrically
with a Fisher automatic "titralyser0"
7o Biochemical Oxygen Demand
Reference: Standard Methods for the Examination of Water
and Wastewater, 12 ed., 1965^
The Biochemical Oxygen Demand was determined by the azide
modification of the basic Winkler method with the titration done
potentiometrically with a Fisher automatic "titralyzero" The samples
as received were diluted if necessary and transferred to standard
300 ml BOD bottles in triplicate. One initial DO and two final DO
-------
-------
IV
determinations were used throughout. Incubation was started
immediately at 20eC and continued for five days after which they
were titrated.,
80 Total Carbon
Reference: Beckman Instruments, Bulletin l|.059.
Total Carbon was determined with a Dow-Beckman
Carbonaceous Analyser asing the sample as received„
9. Total Kjeldahl Nitrogen
Reference: Standard Methods for the Examination of Water
and Wastewater, 12 ed0, 1965.
Total Kjeldahl Nitrogen includes ammonia and organic
nitrogen and was determined by the standard micro-kjeldahl
procedure. The sample was digested in the presence of strong acid
to convert the organic nitrogen to ammonia. The ammonia was then
distilled, collected in boric acid solution, nesslerized and
determined colorimetrically.
10. Organic Nitrogen
Reference: Standard Methods for the Examination of Water
and Wastewater, 12 ecu, 1965.
Organic Nitrogen was determined by the standard micro-
kjeldahl procedure. The ammonia nitrogen in the sample was
destroyed by boiling the sample at pH 7.00 The sample was then
digested in the presence of strong acid to convert the organic
-------
nitrogen to ammoniac. The ammonia was then distilled, collected in
boric acid solution, nessleri;;ed and determined colorimetrically,
11. Ammonia
Reference: Standard Methods for the Examination of Water
arid Wastewater, 12 ed., 1965°
The water samples as received were adjusted to a pH of
7.'; - 7J|. An aliquot portion was distilled collecting the
distillate in 2% boric acido An aliquot of the distillate was
nesslerized and read on a spectrometer at 1;25 mj-i. The results
were calculated as fJH-,-!^
1?. Nitrate Nitrogen
Reference: Standard Methods for the Examination of Water
and Wastewater, 12 ed., 1965,.
Jenkins, B. and Medsker, L0L., 196ii. Brucine Method for
Determination of Nitrate in Ocean, Estuarine and Fresh Waters.
Analytical Chemistry, 36: 610-612.
Nitrate nitrogen v;a:. determined by the Jenkins modification
of the standard brucine method. The procedure includes the masking
of varying chloride Concentrations by the addition of excess sodium
chloride«, The results were calculated as NOo-N.
13. Nitrite Nitrogen
Reference: Standard Methods for the Examination of Water
and Wastewater, 12 ed», 1965»
A Manual of Sea Water Analysis, J0D.H. Strickland and T.E.
-------
vi
Parsons, 2nd ed., Queen's Printer and Controller of Stationery,
Ottawa, Canada, 1965.
Nitrite Nitrogen was determined by diazotization with
sulfanilamide and N-(l-naphtyl)- ethylenediamine dihydrochloride.
The results were calculated as NCL-No
llu Total Phosphorus
Reference: Menzel, D0W. and Corwin, N., 1965. The
Measurement of Total Phosphorus in Seawater Based on the Liberation
of Organically Bound Fractions by Persulfate Qxidation0 Limonology
and Oceanography, 10: /'80-^JPc
Murphy, .1. and Riicy, <'>JJe, 1962,, A Modified Single
Solution Method for the Determination of Phosphate in Natural
Waters, Analytics. Chimica Acta, ??: 31-36o
Total Phosphorus was determined after persulfate oxidation
of the sample in an autoclave at 15 psi for 30 minutes. The
resultant ortho-phosphate was then determined colorimetrically as
the molybdenum-blue complex with the optical density measured at
882 mu.0
l5« Inorganic j'aosphorue
Reference: Murphy, J. and Riley, JaP0, 1962. A Modified
Single Solution Method for the Determination of Phosphate in
Natural Waters0 Analytica Chimica Acta, 27: 31-360
Inorganic Phosphorus was determined colorimetrically as
the molybdenum-blue complex with the optical density measured at 882 mji.
-------
vii
i6o Total Phosphorus, nillipore filtered
Reference: Menzel, D.W. and Gorwin, N0, 1965. The
Measurement of Total Phosphorus in Seawater Based on the Liberation
of Organically Bound Fraction? by Persulfate Oxidation,, Limonology
and Oceanography, 10: ?QO-2&2.
Murphy, J. and Riley, J.P., 1962. A Modified Single
Solution Method for the Determination of Phosphate in Natural
Waters. Analytica Ghimica Acta, 27: 31-36.
The sample as received was filtered through a Type HA
millipore filter. The Total millipore filtered Phosphorus was
then determined after pers :lfate oxidation of the sample in an
autoclave at 15 psi for 30 minutes0 The resultant ortho-phosphate
was then determined colorimetrically as the molybdenum-blue
complex with the optical density measured at QQ? my..
17o Inorganic Phosphorus, millipore filtered
Reference: Murphy, Je and Riley, J0Pc,, 1962« A Modified
Single Solution Method for the Determination of Phosphate in
Natural Waters. Analytica 'Ihimica Acta, 27: 31-360
The sample as received was filtered through a Type HA
millipore filter. Inorganic millipore filtered Phosphorus
was determined colorimetrically as the molybdenum-blue complex
with the optical density measured at 882 mne
-------
-------
viii
18. Chlorides
Reference: Fisher Scientific Company, Bulletin #6U-[|A.
The Chloride concentration was determined by titrating
the sample with standard silver nitrate to a potentiometric end
point using a silver indicating electrode and a silver/silver
chloride reference electrode.
19. Chlorophyll a
Reference: A Manual of Sea Water Analysis, J»D.H.
Strickland and T.R. Parsons, 2nd0 eda, Queen's Printer and
Controller of Stationery, Ottawa, Canada, 1965.
Chlorophyll a was determined by extraction of millipore
filtered samples in 90$ acetone and read spectrophotometrically.
-------
L LOCATIONS
Station
Name
301 Potomac River Bridge
Popes Creek
Port Tobacco River
Cedar Point
Nanjemoy Creek
Metomkin Point
Buoy 17
Maryland Point
Thomas Point
Smith Point
Douglas Point
Sandy Point
Buoy 1)1
Possum Point
Mattawoman Creek
Indian Head
Hallowing Point
Gunston Cove
Dogue Creek
Sampling
Location
Bridge
Buoy 2
Buoy 6
Buoy 8
Buoys 10 and 11
Buoy 15
Buoy 1?
Buoy 21
Buoy 2k
Buoys 27 and 30
Buoy 33
Buoy UO
Buoy hi
Buoy kk
Buoys U5 and kl
Buoys 5U and 55
Buoys 59 and 6l
Buoy 6k
Buoys 66 and 6?
Distance from
Chain Bridge
67.5
65.5
53.3
59.8
58.2
56.2
53.7
52.0
U8.2
U5.li
liii.5
ko05
39.5
37.1
33.7
29.5
26.0
2U.1
2200
-------
Station
Name
Sampling
Location
Distance from
Chain Bridge
Mount Vernon
Piscataway Cree'.:
Hatton Point
Broad Creek
Rosier Bluff
Hunting Creek
Woodrow Wilson Bridge
Blue Plains STP
Bellevue
Washington National Airport
Haines Point
Roaches Run
li;th Street Bridge
Key Bridge
Buoy 71 20.1
Buoys 75, 77 and 79 18.0
Buoy 6j 1?02
Buoys 8k and 86 15.1
Buoy 88 13e2
Buoy 2 12.?
Buoy h and Bridge 11.8
Buoy 8 10.0
mi Dock and 23" Bell 9.7
Buoy 9 8.5
Buoy 1 and it 7 »k
Buoy 6 6.8
Buoy 10 6.0
Bridge 3.3
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A/
LOCATION MAP
POTOMAC ESTUARY
SCALE IN MILES
-------
Chesapeake Technical Support Laboratory
Middle Atlantic Region
Enviromental Protection Agency
Federal Water Quality Administration
1967 Data Report
Number 10
WATER QUALITY SURVEY
OF THE
ANNAPOLIS METROPOLITAN AREA
by
James W. Marks
and
Orterio Villa, Jr.
Laboratory Staff
Donald W. Lear, Jr., Chief, Laboratory Section
Anna R. Favorite, Statistician
-------
TABLE OF CONTENTS
Page
I INTRODUCTION 1
II STATION LOCATIONS 9
III SURVEY RESULTS lk
IV MAP appendix, i
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I INTRODUCTION
A. Purpose and Scope
During the spring and summer of 1967, the Chesapeake Technical
Support Laboratory, Middle Atlantic Region, Enviromental Protection
Agency, Federal Water Quality Administration conducted a survey of
the water quality in the tidal waters of the greater Annapolis
metropolitan area. The purposes of this survey were as follows:
1. To determine the present quality of the water and to
or, tab Li nh n baseline of water quality with which future changes
can be compared.
/. To make a comparative analysis of water quality in
populated areas served by public sewers with areas where septic
systomn arc common.
;. To del-ermine the relative importance of the various sources
of pollution in the area so that a rational abatement program can
be developed.
'l. To develop b'-ckground information on nutrient and chloro-
phyll concentrations in estuaries of the Chesapeake Bay system.
R. General Remarks
This survey was divided into five separate studies as follows:
J. Seven baseline stations in the greater Annapolis area were
sampled each weok throughout the summer, May through August.
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2
The purpose of these stations was to show changes in water quality
during tho critical recreation season and to provide reference
stations to tie in the samples collected in studies 2, 3, k and 5>.
2. Intensive water quality study was conducted on the West,
Rhodes and South Rivers during the week of May 22 through 26.
South River was sampled daily June 5> through 9 during "June Week",
tho Naval Academy graduation when tourist influx was at its peak.
1. .Intensive water quality studies were conducted on the
Sovorri IHvor during the weeks of May 16 through 19, June ^ through
'> ("June Weok", d-i:i l.y sampling) and August 1 through j.
)|. IntorisJvo water quality studies were conducted on the
Magul.h., h'ivcr during tho weeks of May (i through 12 and July 17
through ;'().
'>'. Soloct crooks of the Severn River ( Back Creek and Spa
Crook) and South River ( Broad Creek) were sampled weeks of
Juno ,'(>_,''( and July 10 through 21.
i:. I'j.-impli ng Procedures
All ;;arnplo;, for chemical analysis were obtained by dipping
a plastic container full of the river water. A quart cubitainer
was then filled from the dipped sample and iced, A portion of
the dipped sample was siphoned into a DO bottle until overflowing
and fixed. A portion of the dipped sample was also used to
rnrasurc the temperature at the time of sampling.
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3
The iced samples were returned to the laboratory within two
hours where the analysis were started immediately.
All bacteriological samples were obtained by dipping a
sterile sample bottle directly into the river. The full
bacteriological sample bottle was then capped and iced and
returned to the laboratory within two hours where the analysis
were started immediately.
D. Measured Parameters and Analytical Methods
1. Water temperature was determined using a mercury
thermometer inserted into the sample container immediately
upon collection.
2. Light extinction, in inches, was made with a 12"
(30 cm) white Secchi disk.
3. Dissolved Oxygen
Reference: Standard Methods for the Examination of
Water and Wastewater, 12 ed., 1965-
Dissolved Oxygen was determined by the azide
modification of the ba3ic Winkler method with the titration
done potentiometrically with an automatic "titralyzer."
1|. Total phosphorus
Reference: Menzel, D.W. and Corwin, N., 196£.
The Measurement of Total Phosphorus in Seawater Based on
the Liberation of Organically Bound Fractions by Persulfate
-------
k
Oxidation. Limnology and Oceanography, 10: 280-282,
Murphy, J. and Riley, J.P. , 1962. A Modified Single
Solution Method for the Determination of Phosphate in Natural
Waters. Analytica Chimica Acta, 21: 31-36.
Total Phosphate was determined after persulfate
oxidation of the sample in an autoclave at l£ psi for 30
minutes. The resultant ortho-phosphate was then determined
colorimetrically as the molybdenum-blue complex with the
optical density measured at 882 mil.
£. Total Dissolved Phosphorus
Reference: Menzel, D.W. and Corwin, N., 196£. The
Measurement of Total Phosphorus in Seawater Based on the
Liberation of Organically Bound Fractions by Persulfate
Oxidation. Limonology and Oceanography, 10: 280-282.
Murphy, J. and Riley, J.P., 1962. A Modified Single
Solution Method for the Determination of Phosphate in Natural
Waters. Analytica Chimica Acta, 2?: 31-36.
The sample as received was filtered through a Type HA
millipore filter. The Total millipore filtered Phosphorus was
then determined after persulfate oxidation of the sample in an
autoclave at 15 psi for 30 minutes. The resultant ortho-phosphate
was then determined colorimetrically as the molybdenum-blue
complex with the optical density measured at 882 mn.
-------
6. Total Kjeldahl Nitrogen
Reference: Standard Methods for the Examination of
Water and Wastewater, 12 ed., 1965.
Total Kjeldahl Nitrogen includes ammonia and organic
nitrogen and was determined by the standard micro-kjeldahl
procedure. The sample was digested in the presence of strong
acid to convert the organic nitrogen to ammonia. The ammonia
was then distilled, collected in boric acid solution,
nesslerized and determined colcrimetrically.
7. Total Kjeldahl Nitrogen, millipore filtered
Reference: Standard Methods for the Examination of
Water and Wastewater, 12 ed., 1965.
The sample as received was filtered through a Type HA
millipore filter. Total millipore filtered Kjeldahl Nitrogen
includes ammonia and organic nitrogen and was determined by
the standard micro-kjeldahl procedure. The sample was digested
in the presence of strong acid to convert the organic nitrogen
to ammonia. The ammonia was then distilled, collected in boric
acid solution, nesslerized and determined colorimetrically.
8. Nitrate + Nitrite
Reference: A Manual of Sea Water Analysis, J.D.H.
Strickland and T.R. Parsons, 2nd. ed., Queen's Printer and
Controller of Stationery, Ottawa, Canada, 1965.
-------
Nitrate plus Nitrite nitrogen was determined by
the cadmium reduction of nitrate to nitrite and subsequent
diazotization with sulphanilamide and N-(l-napthyl)-
ethylenediamine dihydrochloride. The results were calculated
as nitrite nitrogen.
9. Chlorophyll
Reference: A Manual of Sea Water Analysis, J.D.H.
Strickland and T.R. Parsons, 2nd. ed., Queen's Printer and
Controller of Stationery, Ottawa, Canada, 1965.
Chlorophyll a was determined by extraction of
millipore-filtered samples in 90$ acetone and read
spectrophotometrically.
10. Nonfiltrable Residue (Suspended Solids)
Reference: Standard Methods for the Examination of
Water and Wastewater, 12 ed., 1965. FWPCA Methods, November
1969.
The Nonfiltrable Residue was determined by filter-
ing a known volume of sample. A predried and weighed Gelman
Type A glass fiber filter was used. The filter and its
contents were then dried in an oven at 105°C, cooled and
reweighed. The gain in weight represents Nonfiltrable Residue.
11. Turbidity
Turbidity was determined with a Hach photoelectric
nephelometer, calibrated in Jackson Turbidity Units.
-------
7
12. Surfactants (LAS/ABS)
Reference: Standard Methods for the Examination of
Water and Wastewater, 12 ed., 1965.
This method depends on the formation of a blue-colored
salt when methylene blue reacts with anionic surfactants, which
include not only ABS but also alkyl sulfates. The salt is
soluble in chloroform and the intensity of color is proportional
to the concentration. The intensity is measured by making
spectrophotometric readings in this solvent at a wave length
of 6^2 rnp.. The method is applicable in the 0.025-100 mg/l (as
ABS) range.
13. Chlorides
Reference: Fisher Scientific Company, Bulletin #6l4-l|A.
The Chloride concentration was determined by titrating
the sample with standard silver nitrate to a potentiometric end
point using a silver indicating electrode and a silver/silver
chloride reference electrode.
ll*. Coliform
Reference: Jtandard Methods for the Examination of
Water and Wastewater, 12 ed., 1965.
Coliform population was determined using the 5 tube-
3 dilution Multiple-Tube Fermentation Technique. Lauryl
sulfate tryptose broth was used for the presumptive test with
-------
8
incubation at 35>° * 0.5>°C. Brilliant green lactose bile broth
was used for the confirmatory test with incubation at 35° ^ 0.5>°C.
The results were reported as the Most Probable Number (MPN).
15. Fecal Coliform
Reference: Standard Methods for the Examination of
Water and Wastewater, 12 ed., 1965>.
Water Pollution Control Research Series, WP-20-3.
Fecal Coliform population was determined using the
5> tube-3 dilution Multiple-Tube Fermentation Technique.
Lauryl sulfate tryptose broth was used for the presumptive
test with incubation at 35° i 0.5°C. EC medium was used
for the confirmatory test with air incubation at Uf?«5>° ± 0.£°C.
The results were reported as the Most Probable Number (MPN).
-------
II STATION LOCATIONS
CONTROL STATIONS
Rhodes River
West River
Severn River
South River
Chesapeake Bay
Magothy River
Carr's Wharf
Chalk Point
Old Severn River Bridge
Spa Creek , Eastport Bridge
Route 2 Bridge
Sandy Point State Park
Arundel Beach
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10
WEST, RHODES and SOUTH RIVERS
West River
1 A South Creek, Avalon Shore
1 B Red Buoy R 6
1 C Curtis Point
Rhodes River
2 A Mouth, Buoy 2
2 B Cadle Creek
Chesapeake Bay
3 A Saunders Point
South River
3 B Turkey Point
3 C Selby Bay
3 D Brewer Creek
3 E Can Buoy 13
3 F Glebe Creek, Woodland Beach
3 G Almshouse Creek, Woodland Beach
3 H Sylvan Shores
3 I Beards Point
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11
SEVERN RIVER
Chesapeake Bay
6 A Bay Ridge Beach
Severn River
5 A Greenbury Point
5 B Back Creek, Chinks Point
5 C Dorsey's Creek, Naval Academy Bridge
5 D Weem's Creek, Old Route 2 Bridge
5 E New Severn River Bridge
5 F Arnold Point and Brewer Point, Buoy
5 G Round Bay
5 H Little Round Bay
5 I Cedar Point
5 J Valentine Creek
5 K Rock Cove
5 L Indian Village, Mathews Point
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12
MAOOTHY HTVKR
Magothy River 7 A Mouth, in Channel, Gibson Island
7 B Deep Creek
7 C Tar Cove
7 D Dobbins Island, Sillery Bay
7 E Ulmstead Point
7 F Forked,Creek
7 G South Ferry Point, Buoy C 7
7 H Stony Point, Mill Creek and
Dividing Creek
7 I Indian Village, Spar 12
7 J Riverdale
7 K Henderson's Point
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13
CREEKS of SEVERN and SOUTH RIVERS
Back Creek
Spa Creek
SEVERN RIVER
B 1 Head of Creek
B 2 Shipwreck Point
B 3 STP Cove
B k Cove by Watergate Apts, high rise
B $ Beacon £
B 6 Control Station
S 1 Head of Creek
S 2 Off Truxton Cove
S 3 Acton Cove
S \\ Eastport Bridge
S 5 Market Slip
S 6 Buoy 1
S A Head of Market Slip
S B Mouth of Market Slip
S C Midchannel off Annapolis Yacht Club
piers, upstream of slip
S D Midchannel downstream from slip
Broad Creek
SOUTH RIVER
1 Upstream from Riva Bridge
2 Riva Bridge
3 Mouth of Creek, 1st cove
I). In Creek, 2nd cove
5 In Creek, 3rd cove
6 In Creek, most upstream
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-------
1967
ANNAPOLIS METRO AREA STUDY
SEVERN RIVER SPA CREEK
CHESAPEAKE TECHNICAL SUPPORT LABORATORY
Sample
Number
Time
Sample
Taken
Tide
Secchi
Disk
Inches
Station S-l HEAD OF
6706266k
2707
2807
2907
67071021
1731
67062665
2708
2808
2908
67071022
1732
67062666
2709
2809
2909
67071023
1733
67062667
2710
2810
2910
67071021;
173k
67062668
2711
2811
2911
67071025
1735
1135
1120
1150
0809
ili5o
lUio
iiUo
1125
ii53
0812
11*53
ilal;
iil*5
1130
1156
0816
11+56
llil7
ll5o
1135
1203
0822
1500
1U20
Ebb
Ebb
Flood
Station S-2
Ebb
Ebb
Flood
Station
Ebb
Flood
Station S-l;
Ebb
flood
15"
Water
Temp
°C
CREEK
25.0
27.0
• 27.0
25.0
28.0
27.0
OFF TRUXTON COVE
30"
S-3 ACTON
33"
25.5
27.0
27.0
26.0
28.0
27.5
COVE
26.0
26.0
27.0
26.0
29.0
27.5
EASTPORT BRIDGE
29"
Station S-5 MARKET
1200
llliO
1208
0826
1501;
11*26
Ebb
Flood
36"
26.0
26.0
26.5
26.0
29.0
27.0
SLIP
26.0
25.5
26.5
25.5
27.0
27.0
Coliform
MPN/100 ml
1090
17,200
3,100
330
1300
1720
1*90
130
700
330
70
210
l*oo
230
130
91,800
110
70
5,1;20
330
790
1,720
230
80
91,800
2,780
3,1*80
51;, 200
1720
16,090
Fecal
Coliform
MPN/100 ml
310
3,1*80
1*90 '
< 20
LA
220
130
50
80
< 20
LA
< 20
200
50
50
< 20
LA
1*0
11*0
80
80
< 20
LA
50
3,1*80
130
330
< 20
LA
9,180
LA- Laboratory accident
-------
39
Sample
Number
67062669
2712
2812
2912
67071026
1736
67071737
67071738
Time
Sample
Taken
Tide
Secchi
Disk
Inches
Water
Temp
°C
Coliform
MPN/100 ml
Fecal
Coliform
MPN/100 ml
Station S-6 BUOY "1"
1210
1105
1213
0830
1510
1U32
1U25
1^27
Station S-C
67071739
670717UO
11+21
Ebb
Flood
Station S-A
Station S-B
MID CHANNEL
29"
25.5
25.5
26.0
25.0
27.0
27.5
HEAD OF MARKET SLIP
MOUTH OF
OFF "AYC"
Station S-D MIDCHANNEL DOWN
11*29
27.5
MARKET SLIP
27.0
230
110
1+90
230
80
130
2l+,000
3,1+80
20
ho
20
< 20
LA
20
3,480
h90
PIERS UPSTREAM TO SLIP
27.0
STREAM FROM
27.0
2,1+00
SLIP
1,300
270
70
LA- Laboratory accident
-------
1967
ANNAPOLIS METRO AREA STUDY
SEVERN RIVER - BACK CREEK STATIONS
CHESAPEAKE TECHNICAL SUPPORT LABORATORY
Sample
Number
67062658
2701
2801
2901
67071011;
1725
67062659
2702
2802
2902
67071015
1726
Time
Sample
Taken
101*5
1205
1110
0737
1527
11*58
1055
1200
1115
071*2
1525
11*1*5
Tide
Station
Ebb
Ebb
Flood
Station
Ebb
Ebb
Flood
Water
Secchi Temp
Disk °C
B-l HEAD OF CREEK
lo1" 25.5
27.0
27.0
2l*.5
30.5
27.5
B-2 SHIP WRECK POINT
2V 25.5
27.0
27.0
25.5
28.5
27.5
Station B-3 STP COVE
6702660
2703
2803
2903
67071016
1727
67062661
270k
2801*
290k
67071017
1728
67062662
2705
2805
2905
67071018
67071729
1225
1158
1118
071*1*
1522
11*1*3
Station
1220
1155
1120
07 k?
1518
ll*l*o
1215
1150
1126
0751
1515
11*38
Ebb
Ebb
Flood
B-l* GOVE BY
Ebb
Ebb
Flood
Station
Ebb
Ebb
Flood
27" 25.5
26.0
27.5
26.0
28.5
27.5
WATERGATE HIGH RISE
26" 25.5
26.0
26.5
25.0
28.5
27.5
B-5 BEACON "5"
2k" 25.0
26.0
26.0
25.0
28.0
27.0
Coliform
MPN/100 ml
>160,900
91,800
LA
17,200
330
1*60
51*, 200
21*, 000
5,1*2C
1*,300
110
230
17,200
17,200
3,i*80
1*90
700
130
APARTMENTS
91»0
5,1*20
1*90
1,-300
330
170
31*80
3,1*80
790
110
130
330
Fecal
Coliform
MPN/100 ml
>160,900
17,200
LA
< 20
LA
330
21*0,000
2,780
1*60
<20
LA
50
/ 1 ~ ,-.
£,1*20
2,600
U90
<20
LA
130
5^20
1,300
50
<20
LA
80
1300
31*0
1*90
<20
LA
80
LA- Laboratory accident
-------
Sample
Number
67062663
2706
2806
2906
67071019
1730
Time
Sample
Taken
1110
1100
1132
0755
1/4.35
liiOO
Station
Tide
Station
Ebb
Ebb
Flood
B- AS
Secchi
Disk
Inches.
B-6 CONTROL
30"
FAR UP CREEK
Water
Temp
STATION
2k* B
25.5
26.0
2ii.5
26.5
27.0
AS WATER
Coliform
MPN/100 ml
210
9i|0
790
2,UOO
20
50
PERMITS
Fecal
Coliform
MPN/100 ml
80
130
170
< 20
LA
< 20
67071020
LA- Laboratory accident
-------
(7A) GIBSON ISLAND
(5H) LITTLE ROUND BAl
ANNAPOLIS METROPOLITAN AREA
(31) BEARDS PT
(STATION 2J
(CONTROL) RT Z BRIDGE
(IB)BUOY R-6
(CONTROL)CHALK PT
------- |