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- AMBIENT WATER QUALITY
- SARASOTA COUNTY,
FLORIDA -
- ENVIRONMENTAL SERVICES LABORATORY
1.9 84
T h i s Annual Report was prepared under t h e d i r e c t i o n
o f Jose M . G u i r a , Ph.D. a s s i s t e d by Laura McAdam,
Bonnie Passalacqua, Zds is law K o l a s i n s k i and Ruth
Trembath.
ENVIRONMENTAL SERVICES LABORATORY
STAFF - 1984
............ DIRECTOR Jose M. Guira , Ph.D
WATER ........... SAMPLING Bruce Maloney,
Robert F. E l l 'ison
........... CHEMISTRY Zdsislaw Kolasinski 1 Bonnie Passalacqua
MICROBIOLOGY.. ...... Laura Lvn McAdam
TABLE OF CONTENTS
PAGE #
I n t r o d u c t i o n .............................. C l a s s i f i c a t i o n o f County Waters . . . . . . . . . . . Map o f C l a s s i f i c a t i o n s . . . . . . . . . . . . . . . . . . . . Water Q u a l i t y Standards
B a c t e r i o l o g i c a l Q u a l i t y Standards ( T o t a l & Fecal Col i f o r m ) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
D i s s o l v e d Oxygen Standards . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 pH Standards . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
. Bay M o n i t o r i n g . . .......................................... 7 8 Bay Run I (Sarasota @ay) 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 - I 5
. . . . . . . . Bay Run I I ( R o b e r t ' s Bay & L i t t l e Sarasota Bay) 16 - 2 2 Bay Run I I I ( L i t t l e Sarasota Bay, B l a c k t u r n Bay,
. . . . . . . . . . . . . . . . . . R o b e r t ' s Bay & Dona Bay) 23 - 2 9 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Bay Run IV emon on Bay) 30 - 3 6
Stream M o n i t o r i n g . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37 . 38 N o r t h County . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39 . 47 Cen t ra l County . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48 . 56 South-Southeast County . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57 . 65
N u t r i e n t s I n t r o d u c t i o n . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66 . 69 Bay Runs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70 . 91
. Stream Runs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 92 108
AMBIENT WATER QUALITY MONITORING PROGRPM
The purpose o f our program i s t o m o n i t o r t h e w t e r qua1 i t y o f Sarasota
County and t o l o c a t e s i t e s o f env i ronmenta l s t r e s s , which may i n d i c a t e
p o t e n t i a l o r p resen t problems. T h i s o b j e c t i s accanp l ished through a
mon th ly s u r v e i l l a n c e o f our waterways and d ra inage bas ins . Once a s t a t i o n
i s e s t a b l i s h e d , t h e s i t e i s sampled approx ima te ly once a month p r o v i d i n g
documentat ion o f water q u a l i t y t rends . T h i s r e p o r t w i l l summarize t h e r e -
s u l t s o f our m o n i t o r i n g progran.
The 41 Bay Run S t a t i o n s a re sampled f o r Water Temperature, pH, Con-
d u c t i v i t y , D isso lved Gxygen, T u r b i d i t y , Co lor , Transparency and T o t a l and
Fecal Col i f o r m . The 39 Stream Run S t a t i o n s a r e sampled f o r Temperature,
pH, C o n d u c t i v i t y , D i s s o l v e d Oxygen, T u r b i d i t y , Co lor , T o t a l and
Fecal C o l i f o r m and Fecal St reptococcus. Q u a r t e r l y , these Bay and Stream
Run S t a t i o n s a r e sampled f o r N i t r a t e s , N i t r i t e s , A ~ m o n i a , TKN, Orthophos-
phates and T o t a l Phosphorous.
I n a d d i t i o n t o our r e g u l a r m o n i t o r i n g program, t h e Laboratory s t r o n g l y
suppor ts an a c t i v e enforcement prograo r e g u l a t e d by t h e P o l l u t i o n C o n t r o l
D i v i s i o n . - The Labora to ry a l s o p r o v i d e s ass is tance t o t h e S o l i d Waste Management
D i v i s i o n i n i t s s u r v e i l l a n c e o f M o n i t o r i n g Wel ls and o f problems assoc ia ted
w i t h water q u a l i t y found i n L a n d f i l l s .
LABORATORY QUALITY CONTROL
P h y s i c a l , chemical and b a c t e r i o l o g i c a l q u a l i t y i s ma in ta ined through
t h e U .S . Env i ronmenta l P r o t e c t i o n Agency and t h e S t a t e o f F l o r i d a Department
o f Environmental Regu la t i on approved procedures. Continuous c a l i b r a t i o n of
i ns t ruments , d u p l i c a t e samples a n a l y s i s , sp i ke sanp le a n a l y s i s and accura te
r e c o r d keeping o f a l l procedures a r e an i n t e g r a l p a r t o f our i n t e r n a l Q u a l i t y
Assurance P r o g r m . On a y e a r l y bas is , we a l s o p a r t i c i p a t e i n t h e EPA/FDER
I n t e r - L a b o r a t o r y Performance E v a l u a t i o n Program.
Dur ing 1984, t h e Labora to ry ma in ta ined t h e i r c e r t i f i c a t i o n f o r
D r i n k i n g Water M i c r o b i o l o g y , N i t r a t e and T u r b i d i t y t e s t i n g by p a r t i c i p a t i n g
i n t h e S t a t e o f F l o r i d a Department of H e a l t h and R e h a b i l i t a t i v e Serv i ces
C e r t i f i c a t i o n Program.
CLASSIFICATION OF WATERS
Accord ing t o S a r a s o t a ~ o u n t ~ Ordinance #72-37, t h e su r face waters
i n Sarasota County f a l l i n t o t h r e e c l a s s e s o f su r face water , These
c l a s s e s a r e as f o l l o w s :
CLASS I Po tab le Water Suppl i e s
CLASS I I S h e l l f i s h Propagat ion o r Harves t ing
CLASS I l l Recrea t ion , Propagat ion and Maintenance o f a Heal thy , Wel l -balanced P o p u l a t i o n o f F i s h and W i l d l i f e
These water c l a s s i f i c a t i o n s a r e mapped out on t h e f o l l o w i n g page.
WATER QUALITY STANDARDS
The water q u a l i t y s tandards f o r D i s s o l v e d Oxygen, B a c t e r i o l q i c a l
Q u a l i t y ( T o t a l and Fecal Col i f o r m h and pH, as se t f o r t h by Sarasota
County Ordinance #72-37 and t h e S t a t e o f F l o r i d a #17-3 a re presented
i n Tab les A , B, and C (see pages 4 , 5 and 6 ) . T h i s r e p o r t w i l l canpare
ou r r e s u l t s w i t h these s tandards.
CLASSIFICATION OF SURFACE WATERS IN
SARASOTA , F L O R I D A
BACTERIOLOGICAL QUALITY STANDARDS
( ~ o t a l Colifonn and Fecal Coliform)
1 S t a t e of Florida Dept. of 1 I
t CLASS I
Potable Water Supply '
Sarasota County Ordinance172-37 "Colifonn group not t o exceed 1,000 MPN a s a monthly average ( e i t h e r MPN o r MF counts) ; nor t o exceed t h i s number i n more than 20% of t h e samples
examined during any month, nor t o ex- ceed 2,400 per 100 m l (MPN o r MF) count on any day."
Environmental negulat ion t~ 1- "Colifonn arouo shall not exceed 1.000 I "-the median colifb'nn MPN (most "-fecal col i fonn bac te r i a s h a l l not
CLASS I1
S h e l l f i e h Propagation or Harvesting
" a r e a s c l a s s i f i e d f o r s h e l l f i s h har- ves t ing , t h e median colifonn MPN (most probable number) of water cannot exceed seventy (70) per hundred (100) m l , and not more than t e n (10) per cen t of t h e samples o r d i n a r i l y exceed an MPN of tun,
hundred t h i r t y (230) per one hundred (100) m l , i n those por t ions of a r e a s most probably exposed t o f e c a l conta- mination during most unfavorable hydrographic and po l lu t iona l conditions."
CLASS I11 rtecreation, Propagation L Maintenance D£ a heal thy , well-balanced popula t ion
of Piah and W i l d l i f e "-not t o exceed 1,000 per 100 m i l l i - liter a s a monthly average ( e i t h e r MPN o r M F counts) ; nor t o exceed t h i s number i n more than 20% of t h e samples examined during any month; nor exceed 2,400 per 100 m i l l i l i t e r s (MPN o r MF count) on any day. This c r i t e r i a shall apply only t o waters used f o r body contac t a c t i v i t i e s . "
. . per 100 mill i l i ters a s a monthly average, using e i t h e r most probable number (MPN) o r membrane f i l t e r (MF) counts; nor exceed 1,000 per 100 l i t e r s i n more than 20% of t h e samples examined during any month; nor exceed 2,400 per 100 milliliters (MPN o r MF count) a t any time. Based on a mini- mum of f i v e samples taken over a 30 day period, t h e f e c a l col iform bacte- r i a l l e v e l s h a l l not exceed 200 per 100 mill i l i ters a s computed by t h e log mean, nor s h a l l more than 10% of t h e t o t a l samples taken during any 30 day period exceed 400 per 100 milliliters."
number) of water s h a l l not exceedseventy (70) per hundred (100) milliliters, and not more than t e n percent (10%) of t h e
milli-samples s h a l l exceed a MPN of twohundrednor t h i r t y (230) per one hundred (100) m i l l i l i t e r s . The f e c a l coliform bacte- r i a l l e v e l s h a l l not exceed a median value of 1 4 MPN per 100 milliliters with not more than t e n per cent (10%) of t h e samples exceeding 43 MPN per 100 m i l l i l i t e r s . "
exceed a monthly average of 200 per 100 m l of sample, nor exceed 400 per 100 m l of sample i n 10% of t h e samples,
exceed 800 per 100 m l on any one day, nor exceed a t o t a l col i fonn bacte- r i a count of 1,000 per 100 m l a s a monthly average, nor exceed 1,000 per 100 m l i n more than 20% of t h e samples examined during any month, nor exceed 2,400 per 100 m l a t any t i m e . Monthly averages s h a l l be expressed a s geometri means based on a minimum of 10 samples taken over a 30 day period. Ei ther MPN o r MF counts may be u t i l i z e d . "
I Sarasota County OrdinanceW2-I7 I
CLASS I
Potable Water Supply '
L
"Dissolved oxygen shall no t be a r t i f i c i a l l y depressed below t h e value of four PPM (4.0) (unless background information ava i l ab le t o t h e Pol lu t ion Control Off icer i n d i c a t e s p r i o r exis tence under unpolluted condi t ions of lower va lues) . I n such cases, lower l i m i t s may be u t i l i z e d a f t e r approval by t h e Pol lu t ion Control Officer."
CLASS I1
S h e l l f i s h Propagation o r Harvesting
'-in predominantly f r e s h waters, t h e concentrat ion shall not be less than 5 milligrams per liter. I n predomi- nant ly marine waters, t h e concentra- t i o n shall not average less than 5 milligrams per liter i n a 24 hour period and s h a l l never be less than 4 milligrams per liter. Normal d a i l y and seasonal f luc tua t ions above t h e s e l e v e l s s h a l l be maintained i n both predominantly f r e s h waters and predomi nant ly marine waters."
CUSS I11 Recreat ion, Propagation L Maintenance >f a hea l thy , well-balanced p o p l a t i o n
of F i s h and W i l d l i f e
S t a t e of Florida Dept. of Environmental RegulationX17-3
"-shall not be less than 5 milligrams per l i t e r . Normal d a i l y and seasonal f luc tua t ions above t h i s l e v e l . s h a l 1 be maintained."
"-the concentrat ion i n a l l waters shall not average less than 5 milligrams per. l i t e r i n a 24 hour period and s h a l l never be l e s s than 4 milligrams per l i t e r . Normal d a i l y and seasonal f luc tua t ions above these l e v e l s s h a l l be maintained."
TABLE C oi
"L-w-,z P CLASS I11
Reareation, Propagation & Maintenance af a heal thy , w e l l - b ~ ~ m e d ~ o ~ u l a t i o n
of F i sh and W i l d l i f e
CLASS I
Po tab le Water supply
Sarasota County 0rdinance*72-37
CWISS I1
Shellf imh propagatton or m r v e s t i n g
"-pH of receiving waters s h a l l not 'be caused t o vary more than one (1.0) u n i t above o r below normal pH of t h e waters; and lower va lue s h a l l no t be less than six (6.01, and t h e upper va lue not more than e igh t and one- half (8.5). I n cases where pH may be, due t o na tu ra l background o r causes, outs ide limits s t a t e d above, approval of the Pol lu t ion Control Of f i ce r s h a l l be secured p r i o r t o introducing such mater ia l i n waters of t h e State."
S t a t e of Flor ida Dept. of Environmental ~ e g u l a t i o n ~ 1 7 - 3
No standard.
+
"-of receiving waters s h a l l no t be caused t o vary more than one (1.0) u n i t above o r below normal pH of t h e waters; and t h e lower value s h a l l be not less than six (6.01, and t h e upper va lue not one hal f (8.51."
I
"-shall not vary more than one u n i t above o r below na tu ra l background of coas ta l waters a s defined i n 17-3.05(1)(c), F.A.C., o r more than two t en ths u n i t above o r below na tu ra l background of open waters a s defined i n 17-3.05(1)(c), F.A.C., provided that t h e pH i s not lowered t o less than 6.5 u n i t s o r r a i s e d above 8.5 units."
more than e i g h t and
"-shall not vary more than one u n i t above o r below na tu ra l background of predominantly f r e s h waters and c o a s t a l waters a s defined i n 17-3.05(l)(c) , F.A.C., o r more than tvm t e n t h s u n i t above or below na tu ra l background of open waters a s defined i n 17-3.05(1)(c) F.A.C., provided t h a t t h e pH i s not lowered t o less than 6 u n i t s i n predominately f r e s h waters, o r less than 6.5 u n i t s i n predominately marine waters, o r r a i sed above 8.5 units."
$
BAY RUNS
-
BAY M O N I T O R I N G
The bay waters i n Sarasota County a r e c l a s s i f i e d Class I I
( S h e l l f i s h Propagat ion or Harvest i ng ) and Class I I I (Recreat ion,
Propagat ion and Maintenance o f a Heal thy , Wel l -balanced Popu la t ion
o f F i s h and W i l d l i f e ) .
Bay s t a t i o n s a r e grouped as f o u r runs : Bay Run I i s Sarasota
Bay; Bay Run I I i nc ludes Roberts Bay and L i t t l e Sarasota Bay; Bay
Run I l l i s Blackburn Bay, Dona Bay and Rober ts Bay and Bay Run I V
i s Lemon Bay. These Bay Runs a r e dep ic ted on maps accompanying each
Bay Run da ta summary.
BAY RUN 1
Sarasota Bay
There a r e t e n sanpl ing s t a t i o n s l o c a t e d i n t h i s area (see map). Seven o f
these s t a t i o n s a r e c l a s s i f i e d as Class I I w h i l e t h r e e a r e Class I l l . The
water q u a l i t y v i o l a t i o n s recorded i n t h i s area a r e l i s t e d below. Tabula ted
r e s u l t s o f T o t a l and Feca l c o l i f o r m , Temperature, D isso lved Oxygen, Con-
d u c t i v i t y , pH, T u r b i d i t y , Co lor and Transparency a r e a l s o l i s t e d . The
maximum and second h ighes t T o t a l and Fecal Co l i fo rm, t h e lowest and second
lowest D isso lved Oxygen va lues and t h e maximum and minimum pH va lues a r e
h igh1 igh ted .
VIOLATIONS
S t a t i o n / Locat i on Date Parameter Value Class
508/111 Sarasota Bay, o f f 7/30/84 D isso lved 3.7 I n d i a n Beach D r i v e Oxygen
521/1 I Sarasota Bay, But ton- 7/30/84 D isso lved 3 .9 wood Harbor Marker #6 Oxygen
523/1 1 South o f G u l f t o Bay 7 /3 /84 D isso lved 3 .4 M o b i l e Hane Park Oxygen Seawall
T o t a l C o l i f o r m - The maximum recorded v a l u e was 1300" co lon ies /100 m l
o c c u r r i n g a t t h e ent rance t o Payne Terminal i n Sarasota Bay ( S t a t i o n #510) .
The second h i g h e s t va lue was ZOO* co lon ies /100 m l South o f G u l f t o Bay
Mob i le Home Park Seawall ( S t a t i o n #523)
Fecal Col i f o r m - The maximum recorded va lue was 620 co lon ies /100 m l i n
Sarasota Bay a t Payne Terminal ( S t a t i o n #510) . The second h i g h e s t v a l u e
was 30" co lon ies /100 m l , a t S t a t i o n #508, Sarasota Bay o f f I n d i a n Beach
Or i v e .
D isso lved Oxygen - The lowest recorded v a l u e was 3 . 4 mg/l South o f G u l f
t o Bay Mob i le Home Park Seawall ( s t a t i o n #523) . The second lowest read-
ing was 3.7 mg/l i n ( S t a t i o n #508).
J$ - The maximum v a l u e of 8.5 u n i t s was recorded i n S t a t i o n s 519, 521
and 523. The minimum v a l u e recorded was 7.7 u n i t s i n Sarasota Bay o f f
R i n g l i ng Hane ( S t a t i o n #507).
*Est imated Count
S A R A S O T A C O U N T Y , F L O R I D A
BAY RUN I
#507 - Sarasota Bay - off Rinqling Home X508 - SaraSOta Bay - off Indlan Beach D r . $510 - Sarasota Bay - Payne Tenoiml #514 - SaraSOta Bay - Northwest end of Ringling Causeway X516 - Sarasota Bay - Quick Point X517 - Sarasota Bay - Halyard Lane 11519 - Sarasota Bay - 0.5 m i . off shore a t Bishops P t .
#520 - Sarasota Bay - Marker X15 X521 - Sarasota Bay - Buttonwood Harbor - Marker #6 #523 - South of Gulf-to-Bay Mobile Home Park seawall
1 TOTAL COLIFORM 11
- I Station 1 class Number of times sampled ml I Colonies/100 ml *
"Estimated Count FECAL COLIFORM
Geometric Mean
I
I
I
1
I
"Estimated Count
Station
507
508
510
514
516
517
519
520
521
523 -
Geometric Mean
10
11 -.
17
11
10
10
10
10
10
10 -- -
-- Minimum *
Colonies/100 ml
< lo*
< lo*
< lo*
< 10"
< lo*
< lo*
< 10"
< lo*
< lo*
< lo* --
-- Maximum #
Colonies/100 ml
1 0"
30"
620"
2 0"
10"
< 10"
< 10"
< lo*
10"
10" L
Class
I11
I11
I11
I1
I I
I I
I I
I I
I1
I I
Number of times sampled
11
11
11
11
11
11
10
10
11
11
1 TEMPERATURE
Arithmetic man
24.6
I
1
I
I
I
Station
507
5 08
510
514
516
517
519
520
521
523
I
I
I
I
I
1
Stat ion
507
5 08
510
514 -
516 --
517
519
520
521
523 C
Class
I11
I11
I11
I1
I I
I I
I I
I I
I I
I I
Maximum OC
28.0 -
27.5
28.5
28.0
28.0
28.5
27.5
28.0
28.0
28.0
Number of - times sampled
11
11
11
11
11
11
1 0
1 0
11
11
Minimum OC
17.5
17.5
1 8 . 0
18 .0
17.5
18 .0
1 7 . 5
16.5
1 8 . 0
18 .0 --- -
-
Arithmetic Me an
6.4
5.6
6 . 1
7 .1
7.0
6 .9
6.8
6 . 7
M i n i m ng/l
4 . 3
3.7 - 4 .4
6 . 0
6 . 0 --
4 .5
M a x i m mg/ l
8 . 7
8 . 0
8 .6
8 .1 -. -
8 . 0 --
8.7
Class -
I11
Number of times
11
I1
I1
11
11
I I
TI
8 . 0
7 .6 -
1 0
1 0
I11
I11
I1
I I .
I I
-- --
7.7
8.2
11
11
11
11 -
11
6.2
5 .4
I
CONDUCTIVITY
- S t a t i o n
507
508
510
514
516
517
519
520
521
523
I
f
I
I
I
I
.
Miminunn .tmtms/cm a t 2 5 " ~
48226
45634
46020
42102
46807
43054 '.
43773
47498
47650
46413
A r i t h m e t i c Mean i
50051
49572
48885
49746 1 50465
50031
49713
50324
50402
49974
Station
507
5 08
510
514
516
517
519
520
521
523
Maximum mhos /cm at 2 5 ' ~
52572
52883
51219
51931
52679
52987
53406
52991
53201
52998
C l a s s
IT1
TI1
TI1
T I
I I
IT
I I
I I
I I
IT
- Number o f
t i m e s sampled
11
11
11
11
11
11
1 0
1 0
11
11 I
A r i t h m e t i c Mean
8.2
8.2
8.2
8 . 2
8.2
8 .3
8 . 4
8 .4
8.4
8 . 3
&fin ' ~ l e c t r s r i c
U n i t s
7 .7
8 . 0
8 . 0
8 . 1
8 . 2
8 .2
8 . 3
8 . 3
8 . 2
8 . 2
Maximum E l e c t r o m e t r i c
LhilS
8 . 4
8 . 3
8 . 2
8 . 3
8 . 3
8 .4
8.5
8 .4
8 .5
8.5
C l a s s
IT1
111
I11
TI
I T
TI
I1
IT
I1
I I
Of times sampled
11
11
11
11
11
11
1 0
1 0
11
11
TURBIDITY
COLOR
Arithmetic Me an
4.4
4 .9
5.2
3.7 I
2.0
3.0 I
2.5 1 I
3 .7 !
2.5
2.5 I
Minimum NTU
3.3
2 .3
3.2
2.2
0.9
1 .8
1 .4
1 . 8
1 . 6
1 .0
Stat ion
507
5 08
510
514
516
517
519
520
521
523 *
Maximum NTU
5.4
8 .7
7.3
6 .5
3 . 1
5 .8
4.2
5 .1
3.9
4 .3
- Stat ion
507
5 08
510
514
516
517
519
520
521
523
Number of
Arithmetic Mean
1 9
1 7
1 8
1 4
1 5
1 5
1 5
1 5
1 6
1 6 -
Class
111
I11
I11
I I
I1
I1
I I
I I
I1
I I
Minimum Pt-Co Units
1 5
1 5
1 0
1 0
1 0
1 0
1 0
1 0
1 0
1 0
imessampled
11
11
11
11
11
11
1 0
1 0
11
11
Maximum pt-co hits
25
2 0
2 5
1 5
1 5
2 0
20
2 0
2 0
2 0
Class
I11
111
111
I1
I1
I I
I I
I1
I I
I I
Number ot times sampled
11
11
11
11
1 0
11
1 0
1 0
11
11
I 1 5 TRANSPARENCY
Ar l the t ic Mean
1 . 0
0.7
0.9
1 .4
2.1
1.5
1 .5
1 A
1 . 5
1 . 4
S t a t l o n
507
508
510
514
516
517
519
520
521
523
Maximm Meters
1 . 3
1.1
1 . 3
1.8
3 . 3
1 . 8
2.2
1 . 9
2 . 1
2.9
M u n n n r m Meters
0.7
0.4
0 .7
0.8
1.1
0 .9
0.2
0.8
0.9
0.3
C l a s s '
I11
I11
I11
I I
I I
I1
I I
I1
I1
I I
Number of t i m e s sampled
11
11
11
11
11
11
1 0
1 0
11
11
BAY RUN I I
R o b e r t ' s Bay and L i t t l e Sarasota Bay
There a r e e leven sampling s t a t i o n s l o c a t e d i n t h i s area and a l l a r e
c l a s s i f i e d as Class I I I (See map). The water qua1 i t y v i o l a t i o n s a r e
l i s t e d below. Tabula ted r e s u l t s o f T o t a l and Fecal C o l i f o r m , Tempera-
t u r e , D isso lved Oxygen, C o n d u c t i v i t y , pH, T u r b i d i t y , Co lor and Trans-
parency a r e a l s o l i s t e d . The maximum and second h i g h e s t T o t a l and Fecal
C o l i f o r m , t h e lowest and second lowest D isso lved Oxygen va lues and t h e
maximum and minimum pH va lues a r e h i g h l i g h t e d .
VIOLATIONS
S t a t i o n / Loca t i o n Date Parameter Value
535/1 1 I Roberts Bay, Entrance 8/13/84 D isso lved 3.7 t o P h i l l i p p i Creek Oxygen
537/1 1 1 L i t t l e Sarasota Bay 4124184 Disso lved 3.9 Matheny Creek 8/13/84 Oxygen 2.7
T o t a l C o l i f o r m - The maximum v a l u e o f 2100* co lon ies /100 m l was recorded a t
L i t t l e Sarasota Bay - Matheny Creek ( S t a t i o n # 5 3 7 ) The second h ighes t
v a l u e was. <1000* co lon ies /100 m l recorded i n S t a t i o n s 533, 535, 536, 537
and 596. -
Fecal Col i f o r m - The maximum recorded v a l u e was 1800* co lon ies /100 m l i n
Matheny Creek ( S t a t i o n #537). The second h i s h e s t va lue was 1100* c o l o n i e s /
100 m l a l s o seen i n S t a t i o n #537.
D isso lved Oxygen - The lowest recorded minimum v a l u e was 2 .7 mg/l i n L i t t l e
Sarasota Bay, ent rance t o Matheny Creek ( s t a t i o n #537). The second lowest
was 3.7 mg/l recorded a t R o b e r t ' s Bay, ent rance t o Phi ll i p p i Creek ( S t a t i o n
#535).
fl - The maximum recorded v a l u e was 8.4 u n i t s a t S t a t i on #609. The minimum
v a l u e was 7.5 u n i t s a t S t a t i o n #535.
*Est imated Count
S A R A S O T A C O U N T Y ,
F L O R I D A
9 79 I " : I mi,.
BAY RUN 11
X529 - City Pier (Marina Jack) X531 - Sarasota Bay - Marker #5 8533 - Roberts Bay - San ~ e m o cove 11534 - Roberts Bay - Grand Canal #535 - Roberts Bay - P h i l l i p p i Creek
596 E . . L, X536 - L i t t l e Sarasota Bay - Marker X57 #537 - Matheny Creek X539 - L i t t l e Sarasota Bay - Marker # 4 8 #596 - Roberts Bay - Marker # 7 9
\ :. X606 - Big Pass - Marker # 1 5 X609 - L i t t l e Sarasota Bay - Marker # 3 8
TOTAL COLIFORM 1 8
I * Est imated Count
I - FECAL COLIFORM
.
" ~ s t i m a t e d Count -
Minimum # Colonies /100 r n l
< 100"
< loo*
< loo*
< 100'
< 100"
< loo* . < 100"
< loo*
< loo*
< loo* - - -- < loo*
Maximum # Colonies /100 m l
< 100"
< 100"
< l O O O *
400"
< lO0OX
< l O O O *
2100"
< 100"
< 1000"
< 100" - < 100"
S t a t i o n
529
531
533
534
535
536
537
539
5 96
606
609
Stat ion
529
531
533
534
535
536
537
539
5 96
606
609
Geometric Me an
100
100
126
115
200
126
8 00
100
126
100 -
100
-- . -- Number of
Class
I11
I11
I11
I11
I11
I11
I11
I11
I11
I11 - I11
Geometric Mean
1 7
1 3
1 3
1 3
34
1 7
313
1 5
1 4
1 0 -
11
imes sampled
9
9
1 0
1 0
1 0
1 0
7
1 0
1 0
9
1 0
Minim # ~ o l a n i e s / l t 1 0 m l
< lo*
< 10"
< l o *
< l o *
< l o *
< l o *
l o *
< l o *
< l o *
< l o *
< l o *
# col%emO r n l
8 0"
90*
160"
ZO*
600*
260
1800"
60"
400"
< 10"
40X
Class
111
111
I11
111
I11
I11
I11
I11
111
I11
I11
r o EZ ~ & l ~ d
9
9
1 0
1 0
1 0
1 0
1 0
1 0
1 0
9
1 0
TEMPERATURE .19
DISSOLVED OXYGEN
.
- - -- - -
Station
529
531
533
534
535
536
537
539
5 96
606
609
.
Station
529
531
533
534 .. 535
536
537
539
5 96
606
609
Minimum OC
18.0
16.5
18.0
18.0
18.0
18.5 . 19.0
17.0
18.5
16.0 - -- 18.0
Maximum OC
30.0
29.5
29.5
30.0 .
29.5
30.0
31.0
30.0
30.0
29.5 - 30.0
- - - Number of
Class imes sampled Arithmetic
Me an
24.2
23.6
24.0
24.0
24.0
24.0
25.0
24.0
24.0
23.5 -- 24.0
I11
I11
111
I11
111
I11
I11
I11
I11
I11 - 111
Arithmetic Mean
6.9
7.1
6.5
5.9
6.0
6.4
5.4
7.2
6.4
7.0
6.5
-
9
9
10
10
10
10
10
10
10
9
10
fiim mg/l
5.7
5.7
4.9
4.6
3.7 ,
4.5
2.7
5.7
5.0
6.1
4.8
bb mg/l
8.0
8.3
7.5
7.1
7.8 '
8.7
8.5
9.5
7.6
8.2
8.8
Class
I11
I11
I11
I11
I11
I11
I11
I11
I11
I11
I11
Number o t . times sampied
9
9
10
10
10
10
10
10
1 0
9
10
CONDUCTIVI'IY 2 0
.
-
Station
529
531
533
534 '.
535
536
537
539
596
606
609
Minimum pmhos/m a t 2 5 ' ~
46755
43570
38453
26866
747
32271 . 5233
35199
24644
43766
- Maximum
ilmhos/cm a t 2 5 ' ~ -
52496
53471 . ~
50525
50019
50226
49100
42780
49320
49425
54003 -
Station
529
531
533
534
535
536
537
539
596
606
A r i t h m e t i c Me an
49985
49985
45758
42911
30838
41845
22243
42658
43078
50631 -- 45815
*
. ---
Class
I11
I11
I11
I11
I11
I11
I11
I11
I11
I11
A r i t h m e t i c Mean
8.2
8 .2
8 . 2
8 . 1
7 . 9
8 7
7 .8
8 .2
8 7
8.2
8 . 2
50450 40977 609
- Number of : ime s sampled
9
9
1 0
1 0
1 0
1 0
1 0
1 0
1 0
9
~le&mi%ric U n i t s
7 . 9
8 . 0
8 . 1
8 . 0
7.5
8 . 0
7 .6
8 . 1
8.0
8 . 2
8 .1
Maxirmrm. E l e c r o m e t n c
h ~ t s
8 . 3
8 .3
8.2
8 . 2
8.2
8 . 3
8 .2
8 .3
8 . 3
8 .3
8 .4
Class
I11
I11
I11
I11
I11
I11 -
I11
I11
111
I11
I11
I11
er of . S ~ I I I P ~ ~ ? ~
9
9
1 0
1 0
1 0
1 0
1 0
1 0
1 0
9
1 0
1 0
TURBIDITY 2 1
COLOR -
Arithmetic Me an
3.0
4 .9
3.4
3.1
4.6
3.4
5 .5
3.9
3 . 9
3.8 -- 3 .6
Minimum NTU
1 .7
1 .8
2 .1
1 . 5
1 . 5
1 . 7
2.1
2.0
1 .8
1 . 4
2 ..3
-
Maximum NTU
5.5
1 0 . 4
5.7
7.1
1 7 . 5
7.6
29.9
5.9
8 .0
9.0 - 7.6
Number of ':imes sampled
9
9
1 0
1 0
1 0
1 0
1 0
1 0
1 0
9
1 0
Station
529
531
533
534
535
536
537
539
5 96
606
609
Class
I11
I11
I11
111
I11
I11
I11
I11
I11
I11 -
I11
Arithmetic h k an
1 4
1 5
2 0
3 0
4 0
25
35
25
25
1 5
2 n
Stat ion
529
531
533
534
535
536
537
539
596
606 ..-
609
blinimum Pt-Co Units
1 0
1 0
1 0
1 5
1 5
1 5
2 0
1 0
20
1 0
10
~ k x i n r m Pt-Co Units
2 0
30
3 0
90
90
35
55
3 0
5 5
20
25
Class
I11
I11
I11
I11
I11
I11
I11
I11
I11
I11
111
Number oi - times sampled
9
9
1 0
1 0
1 0
1 0
1 0
1 0
1 0
9
10.
TRANSPARENCY 2 2
-
S t a t i o n
529
531
533
534
535
536
537
539
5 96
606
609
. --- Number o f - -
Class imes sampled Maximum Meters
-
1 . 5
2.0 . .
1 . 8
2 .1
1 .5
2 . 3
1.2
1 . 8
1 . 5
2 .4 - 1 . 9
I11
I11
I11
I11
I11
I11
I11
I11
I11
I11
I11
9
9
1 0
1 0
1 0
1 0
1 0
1 0
1 0
9
1 0
Minimum Meters
0 . 9
0.7
0 .8
0.6
0.2
0 .7
0.2
0.5
0.8
0 . 9 - - -- 0 . 9
Arithmetic Me an
1 .2
1 . 4
1 . 3
1 . 5
0 . 9
1 . 5
0 .8
1 . 2 -
1 . 2
1 .7 -- 1 . 4
BAY RUN I l l
L i t t l e Sarasota Bay, Blackburn Bay, R o b e r t ' s Bay & Dona Bay
There a r e t e n sampling s t a t i o n s l o c a t e d i n t h i s a rea and a l l a r e Class
I I I (See map). Only one v i o l a t i o n was found i n t h i s area. Tabula ted
r e s u l t s o f T o t a l and Fecal Co l i fo rm, Temperature, D isso lved Oxygen,
C o n d u c t i v i t y , pH, T u r b i d i t y , Co lo r and Transparency a r e a l s o l i s t e d .
The maximum and second h i g h e s t T o t a l and Fecal C o l i f o r m , t h e lowest and
second lowest D isso lved Oxygen va lues and t h e maximum and minimum pH va lues
a r e h i g h l i g h t e d .
VIOLATION
S t a t i o n / Loca t ion Date Parameter Value Class
590/1 1 1 Rober ts Bay a t U.S. 41 9/6/84 D isso lved 3.7 Br idge Oxygen
T o t a l C o l i f o r m - The maximum recorded v a l u e was <1000* co lon ies /100 m l
recorded i n Dryman Bay, ent rance o f South Creek ( S t a t i bn #541). The second
h ighes t v a l u e was < l o o * co lon ies /100 m l fcund throughout .
Feca l C o l i f o r m - The maximum recorded v a l u e was 120" co lon ies /100 m l a t t h e
en t rance o f South Creek i n ~ i t t l e k a r a s o t a Bay ( S t a t i o n #541). The second
h i g h e s t v a l u e was 60* co lon ies /100 m l i n Dona Bay and U.S. 41 ( S t a t i o n #589).
fi - The maximum recorded v a l u e was 8.4 u n i t s a t S t a t i on #540. The minimum
recorded v a l u e was 7.3 u n i t s , a l s o i n S t a t i o n #540.
D isso lved Oxygen - The minimum v a l u e was 3.7 mg/l i n S t a t i o n #590.. The
second lowest v a l u e was 4.5 mg/ l ( S t a t i o n #590).
nEst imated Count
TOTAL COLIFORM 2 5
Station Class 4 111
- Number of I Mini- ii
Geometric times sampled ml Colonies/100 m l
* Estimated Count FECAL COLIFORM
I Station . class I t Z b E n $ e d Minimum # I Geometric
Colonies/100 ml Mean I
* Estimated Count
TEMPERATURE
( Station ] Class hinnber of -
tlmes samlec 1 . Arithmetic Minz Oc 1 zl;an
Station
540
541
543
545
547
548
559
589
590
610 .-
-
Arithmetic Me an
7 .7
7 . 1
7.4
7 . 1
6 .8
- 6.7
6 . 4
6.7
6 .1
7.4
- -- - -. - M i n i m mg/l --
5 , L
5.2
6.2
6 . 1
5.8
5 .4
5 . 3
5 .3 - -- 3.7
5 .7
Maximun mg/l
10 .2 -
9.0
9 . 3
8 .4
8 . 0
7 .9
8 . 0
8 . 2
7 . 9
9 .6
Class
I11
I11
I11
I11
I11
I11
111
111
I11
I11
Number of times sampled
9
9
9
9
9
9
9
9
9
9
CONDUCTIVITY 2 7
I Pti -
Station
540
541
543
545
547
548
559
589
590
61 0
Plinimum . Arithmetic Electrometrlc
Units ~ k a n
Class
I11
I11
I11
I11
I11
I11
I11
I11
I11
I11 .-
- Number of
times sampled
9
9
9
9
9
9
9
9
9
9
Maximum lmhos/cmat 25'~
52844 - 53137
54643
54533
51354
51550
50945
50597
53280
53562
Mimimum hos/cnat 25'~
36336
13065
43204
38224
40211
35144 . 38582
19859
33245
41909
Arithmetic Mean
45813
38458
49834
48606
47167
46712
46723
41638
45277
48043
2 8
TURBIDITY
COLOR -
Arithmetic Mean
2.4
2.2
4 .9
5 .4 I
3.3
3 .1
I 3.5
2.4
3 .6
2.7
Station
540
541
543
545
547
548
559
589
590
610 I
Station
540
541
543
545
547
548
559
589
5 90
610 L
Number of - :imes sampled
9
9
9
9
9
9
9
9
9
9
Class
I11
I11
I11
I11
I11
I11
I11
I11
I11
I11
Maximum NTU
3.9
3 . 0
22.2
26.6
6 .2
5 . 0
6 . 5
3 .6
4 .7
6 . 0
Arithmetic Mean
25
35
17
2 0
20
1 9
2 0
36
27
1 8
Minimum 9
NTU
1 .6
1.1
1.4
0 .9
2.2
2 . 3
2 .0
1 . 4
2 . 3
1.1
Minirmrm Pt-Co Units
10
1 0
10
5
10
1 0
1 0
1 0
1 0
1 0
Maximum p t - ~ ",,its
5 0
8 0
3 0
4 0
35
4 0
35
8 0
5 0
25 L
Class
I11
I11
I11
I11
I11
I11
I11
I11
I11
I11
Number ot tim.5 sampled
8
8
8
8
8
8
8
8
8
8
TRANSPARENCY 2 9
Arithetic bkm
1 .7
1.1
1 . 9
1 .7
1 . 2
1 . 5
1.4
1.1
1 .0
2.0
Maxinnnn Meters
2.4 -
1 . 5
3.5
3.0
1 .7
2.2
1 . 9
1 . 7
1 . 2
2.8
Number of t i m e s sampled
9
9
9
9
9
9
9
9
9
9
S t a t i o n
540
541
543
545
547
548
559
589
5 90
610.
Mininnnn , Meters
1 .3
0.7
0.4
0 .3
0.7
0.9
0 .9
0.4
0.7
1 .0 I
C l a s s '
I11
I11
I11
I11
I11
I11
I11
111
I11
I11
BAY RUN I V
Lemon Bay
There a r e t e n sampling s t a t i o n s i n t h i s area. F i v e a r e Class I l l w h i l e f i v e
a r e Class I I (See map). The v i o l a t i o n s recorded i n t h i s area a r e presented.
Tabula ted r e s u l t s o f T o t a l and Fecal C o l i f o r m , Temperature, D isso lved Oxygen,
C o n d u c t i v i t y , pH, T u r b i d i t y , Co lor and Transparehcy a r e a l s o l i s t e d . The
maximum and second h i g h e s t T o t a l and Feca l C o l i f o r m , t h e lowest and second
lowest D isso lved Oxygen and t h e maximum and minimum pH va lues a r e h i g h l i g h t e d .
VIOLATIONS
S t a t i o n / Locat i o n Date Parameter Value Class
563/1 1 1 Entrance o f A l l i g a t o r 7 /2/84 D isso lved 3.8 Creek & l n t r a c o a s t a l Oxygen Waterway
564/11 I Manasota Beach Road 7/2/84 D isso lved 3.6 Br idge Oxygen
570/ 1 1 Lemon Bay, 3/4 M i l e 8/8/84 D isso lved 3.9 Due East o f Marker #26 Oxygen
571/1 1 Lemon Bay, Marker #24 8/8/84 D isso lved 3.7 Oxygen
T o t a l C o l i f o r m - The maximum recorded v a l u e was. <1000+: co lon ies /100 m l i n
t h e f o l l o w i n g S ta t ions: 562, 563,-564, 566 and 567. The second h ighes t
v a l u e was < 100" co lon ies /100 m l fcund throughout .
Feca l C o l i f o r m - The maximum recorded v a l u e was 570 co lon ies /100 rn l a t
S t a t i o n #567. The second h ighes t v a l u e was 470 co lon ies /100 m l found a t
S t a t i o n #563. See map f o r l o c a t i o n d e s c r i p t i o n .
D isso lved Oxygen - The minimum recorded v a l u e was 3.6 mg/l a t Manasota Beach
Road Br idge ( S t a t i o n #564). The second lowest v a l u e was 3.7 mg/l found i n
Lemon Bay, Marker #24 ( S t a t i on #571).
- The maximum recorded v a l u e w s 8.6 u n i t s seen a t S t a t i o n #571. The
minimum recorded v a l u e was 7.2 u n i t s a t S t a t i o n #562. See map f o r l o c a t i o n
d e s c r i p t icn.
*Est imated Count
S A R A S O T A C O U N T Y ,
FLOR l DA N
BAY RUN IV
$562 - South Entrance of Red Lake #563 - A l l i g a t o r Creek $564 - Manasota Beach Rd. Bridge $566 - Forked Creek - Marker #38 #567 - 3/4 m i . east o n Forked Creek $569 - 4 m i . south of Marker #28A $570 - 3/4 mi. east of Marker #26 $571 - Lemon Bay - Marker #24 #572 - Lemon Bay -Marker $33 #573 - Lemon Bay - 1 mi . southwest
0 of Marker $26
6
0- A
C +
0
571
TOTAL COLI FORM
*Estimated Count FECAL COLIFORM
- S t a t ion
562
563
5 64
566
567
569
570
571
572
573
Geometric S t a t ion Class ItEb?$:ed I Mean
*Estimated Count
Class
I11
IT1
I11
IT
I I
I I
I I
I1
I1
I I
b h x i m # Colonies/100 m l -
< IOOO*
< l O O O *
< 1000'
< lOOO*
< lOOO*
< 100"
< 100"
< loo*
< 100'
< loo*
- Mmber of
timcs sampled
9
9
9
9
9
8
8
8
8
8
Minimum # Colonies/100 ml
< loo*
< loo*
< loo*
< loo*
< loo*
< loo* "
< 100'
< loo*
< 100"
< loo*
~eometric !
188 I
180
167 I
167 t
167
100
100
100
100
100
3 3
TEMPERATURE
- Station
562
563
564
566
567
569
570
571
572
5 73 -
I
.
I I
I -
Minimum OC
20.0
20.5
21.0
21.0
21.0
21 .0
21.0
20.5
21.0
20.5 -
Arithmetic bkan
24.7
24.8
24.6
24.6
25.1
2-5 .1
25.3
25.2
25.1
24.9
Station
562
563
564
566
567
569
570
hkuinnnn OC
30 .0
29.5
29.0
29 .0
31 .0
29.5
30 .0
29.0
29.0
29.0
Class
I11
I11
111
I1
I1
I I
I1
I1
I1
I1
h'umber of times sampled
9
9
9
9
9
8
8
8
8
8
6 . 1
-
.- 5.9 -- - - -. -I --
573 - -
* - - -- - --
Arithmetic Me an
5.6
5.7
5 . 5 -
6.0
5 .7
6.b
6 . 1 -
--
Minirm ng/l
4 .2
3 . 8
3.6
4 . 5
4 . 3
9 .8
8 . 3 ---
7 . 2 -
-- - --
M a x i m mg/l
7 . 6
7 .7
7 . 9
7 . 1 -
7 .9
Class
111
I11
I11
I1
I I
3 .7
4 . 1 - - _
4 . 1 -- -- A
ti,,,es sampled Number of
9
9
9
9
9
I1
I1
8
8
9 . 6 - 9.1 .- .
4.9
3 . 9
TURBIDITY
COLOR
S t a t ] o n
562
563
5 6 4
566
567
569
570
571
572
573
t
-- -- h 'umber of
C l a s s lmes sampled Maximum
KTU
5.7
5.0
6 .3
4 . 1
3 .2
5 .1
7.5
7.6
3 . 6
5 . 0
I11
TIT
111
I I
I I
I I
I I
TI
I I
IT
Stat i o n
562
563
564
566
567
569
570
571
572
573 a
1 0
9
9
9
9
8
8
8 ------ 8
8
M ~ n i m u m NTU
2.3
2.0
2.0
1 . 9
1.6
1 . 2
1 . 0
1 . 0
1 . 3
1.1 I
A r ~ t h m e t i c Me an
3.6
3 .4
3.5
3.2
2.4 I 2.7 I
2.9
3.2
2.6
2.7
A r i t h m e t i c Mean
30
3 9
34
3 0
38
23
2 0
18
1 9
2 0
Minirmrm Pt-Co Units
1 5
15
1 5
1 0
1 5
1 0
1 0 -
1 0
1 0
1 0
Maxinnnn pt-co units
50
110
90
8 0
8 0
40
30
25
3 5
3 0
Class
I11
I11
TI1
I1
TI
I1
I1
I I
I1
I I
Number ot times sampled
1 0
9
9
9
9
8
8
8
8
8
3 6 TRANSPARENCY
Geometric Mean
1 . 2
0.9
1 .0
1.1
1.0
1 .4
1.4
1.6
1.4
0 .9
S t a t l o n
562
563
564
566
567
569
570
571
572
573
Max innnn Meters
1 . 8
1 .6
1 .5
1.6
1 .3
1 .9
1 . 8
2.4
2.1
1 .5
M i n i m Meters
0.9
0.6
0.7
0.8
0.7
0.9
0.7
0.8
1 . 0
0.5
Class '
111
I11
I11
I1
I I
I I
I I
I1
I1
I1 I.
Number of t ]me s Sampled
1 0
9
9
9
9
8
8
8
8
8
STREAM RUNS
STREAH MONITORING
The stream run sampling s t a t i o n s a r e d i v i d e d i n t o t h r e e groups based
on l o c a t ions w i t h i n Sarasota County.
The f i r s t group i n c l u d e s t h e basins loca ted f rom t h e N o r t h County
L i n e d o w t o t h e mouth o f P h i l l i p p i Creek. The second group inc ludes
severa l smal l bas ins d i s c h a r g i n g rough ly between S t i ckney P o i n t and t h e
C i t y o f Venice. The t h i r d group inc ludes those s t a t i o n s l o c a t e d i n streams
d i s c h a r g i n g i n t o t h e c o a s t a l r e g i o n f rom t h e C i t y o f Venice through t h e
Englewood a rea down t o t h e South Ccunty boundary. T h i s group a l s o inc ludes
s t a t i o n s w i t h i n t h e Myakka R ive r Basin i n t h e east and southeast p o r t i o n s
o f t h e County.
The su r face waters w i t h i n these groups a r e c l a s s i f i e d Class I and
Class I l l accord ing t o t h e S t a t e o f F l o r i d a Water Q u a l i t y Standards. The
v i o l a t i o n s i n d i c a t e d on t h e f o l l o w i n g pages a r e those va lues which a r e i n
v i o l a t i o n o f t h e standards as set f o r t h i n Sarasota County Ordinance #72-37
and S t a t e o f F l o r i d a Department of Environmental Regu la t ion Chapter 17-3.
For- each stream, t h e v i o l a t i o n s a r e l i s t e d and a r e f o l l o w e d by l o c a t i o n
d e s c r i p t i o n , d a t e and parameter va lue. A map i n d i c a t i n g sampling s i t e
l o c a t i o n s accompanies each group o f data , a long w i t h o v e r a l l t a b u l a t e d
r e s u l t s o f T o t a l Co l i fo rm, Feca l C o l i f o r m , Fecal St reptococcus, Temperature,
D isso lved Oxygen, C o n d u c t i v i t y , pH, T u r b i d i t y and Color .
GROUP I
NORTH COUNTY STREAM RUN STATIONS
The f i r s t group o f s t a t i o n s a r e loca ted f rom t h e N o r t h County L i n e
down t o t h e mouth o f P h i l l i p p i Creek and U.S. 41. T h i s area inc ludes
Whitaker Bayou, Hudson Bayou and t h e P h i l l i p p i Creek dra inage bas ins
( i n c l u d i n g Main "A" Canal ) . A l l t h e sur face waters i n t h i s area a r e
c l a s s i f i e d as Class I l l ; t h e r e f o r e , a l l t h e v i o l a t i o n s i n d i c a t e d a r e
based on those-s tandards . (See Tables A, B and C for ' Water Q u a l i t y
Standards). See map f o r exact l o c a t i o n s .
El ssl.\Do m m a . . .
7. > L n m m m m m m
0 o m-f m . . m m m
c c c w o w
E E Y Y F O O X X X "?'Coo0 .- .-
C C C w w w
E E E ? ? ? . 0 0 0 X X X 'c'+'Cooo
\D N \D 'ti:
a m Ln 'ti: - v u
o w w " 13 - 0 0 m "7 Vl Y V l V l 0 .- .- I- n n
VIOLATIONS
Station: #630 - Main "A" Canal at Palmer Boulevard Bridge
Date - Value - Dissolved Oxygen Dissolved Oxygen Dissolved Oxygen
Station: #670 - Phillippi Creek at 17th Street Bridge - West Branch
Dissolved Oxygen Dissolved Oxygen Dissolved Oxygen
TOTAL COLIFORM
*Estimated Count FECAL COLI~ORM
4 4 FECAL STREPTOCOCCUS
"Estimated Count
DISSOLVED OXYGEN
Station ,
I -
-
-
1
COLOR I - Maximum
Pt-Co Units
5 5
80
9 0
4 0
1 0 0
1 1 0
100
1 0 0
1 1 0
100
1 3 0
100 9 0
Ember of times sampled '
1 0
1 0
1 0
1 0
9
9
9
9
9
9
9
9 9
Station Class Minirmrm ' Pt-Co Units
2 5
4 5
5 5
1 5
4 0
5 0
3 0
5 0 - -
3 0
30
3 0
2 0 3 0
Arithmetic Mean
3 3
5 8
66
2 5
6 4
7 6
6 5
74
7 3
7 6
84
7 3 66
549 I 111
5 5 3
558
5 8 3
584
625
626
627
6 2 8
629
630
642
670
111
I11
I11
I I I
I11
I I I
I I I I11
I I I I11
I11
I I I
GRWP I 1
CENTRAL COUNTY STREAM RUN STATIONS
The second group o f s t rean run s t a t ions a r e loca ted fran Matheny
Creek i n Gulf Gate, sou th a long t h e western boundary of Sarasota County,
t o Ha tche t t Creek i n t h e C i t y o f Venice. A l l t h e s t a t i o n s i n t h i s area
a r e Class I I I . (See Tables A, B and C f o r Water Q u a l i t y Standards).
See map f o r exac t l o c a t i o n s .
V I OLAT I ONS
Shackett Creek
S ta t i on : #501 - Cw Pen Slough a t Southside o f S .R . 72 Bridae
Dissolved Oxygen Dissolved Oxygen
Date 5/7/84
- Value - 2.5 2.1
S ta t i on : #671 - Cow Pen Slough, Southside o f Southbound Lane 1-75 Bridge
Dissolved Oxygen Dissolved Oxygen
North Creek
S ta t i on : #587 - North Creek a t U.S. 41 Bridge
Dissolved Oxygen Dissolved Oxygen Dissolved Oxygen
South Creek
S ta t i on : #588 - South Creek a t U.S. 4 1 Br idge
Dissolved Oxygen 0.issolved Oxygen Dissolved Oxygen
S ta t i on : #615 - South Creek Above Dam a t Oscar Scherer State Park
Dissolved Oxygen Dissolved Oxygen Dissolved Oxygen
Hatchet t Creek
S ta t i on : #618 - Hatchett Creek a t Rai l road Bridge
To ta l Co l i fo rm Fecal Co l i fo rm Dissolved Oxygen
Sta t ion : #619 - Hatchett Creek a t Venice Farm Road Bridge
Dissolved Oxygen Dissolved Oxygen
-Dissolved Oxygen Dissolved Oxygen Dissolved Oxygen Dissolved Oxygen
Date - Value - 3.5 3.5 3.2 3.2 2.7 3.4
V l OLAT l ONS
Matheny Creek
S t a t i o n : #632 - Matheny Creek a t U.S. 41 Br idge Date
D i sso l ved Oxygen ?7278 4 D i sso l ved Oxygen 6/6/84 D i sso l ved Oxygen 7/9/84 D i sso l ved Oxygen 10/24/84
C a t f i s h Creek
S t a t i o n : #639 - C a t f i s h Creek a t Vamo Way Br idge
D isso lved Oxygen D i sso l ved Oxygen D isso lved Oxygen D i sso l ved Oxygen
Value 33- 3.0
E l l i g r a w Bayou
S t a t i o n : #644 - E l l i g r a w Bayou a t U.S. 41 Br idge
D i sso l ved Oxygen 10/24/84 2.4
Clowers Creek
S t a t i o n : #672 - Clowers Creek and Brook House C i r c l e i n Pe l i can Cove
T o t a l Co l i f o rm 7/9/84 3400
TOTAL COLIFORM
"Estimated Count FECAL COLIFORM
*Estimated Count
Minimum # Colonies/100ml
< 10"
< lo*
lo*
10"
30*
30*
3 0 * 40X
70X
5 0 * < 10"
< lo*
30"
Maxirmrm # 'Colonies/100 ml
110"
300"
3 5 0
530
370
1 000*
3800
1000"
1400"
700"
1300"
60"
700X
Station Geometric Mean
16
5 9
5 0
8 4
11 2
12 6
2 19
169 - - -
209
208
9 9
2 0
140
Class Number of times sampled
10
10
10
10
10
10
10
10
10
10
10
10
10
501 t I11
587
588
612
615
617
618
619
632
639
644
6 7 1
672
I I I
I I I
I11
I I I
I11
I11
111
I I I
I I I
I I I
I11
I11
5 3 FECAL STREPTOCOCCUS
_ "Estimated Count
I
Geomet r i c Mean
4 0 9
Maximum # Minimum # Colonies/ lOO ml Colonies /100 ml
4 2 0 0 0 1 4 0 "
S t a t i o n
5 0 1
umber o f C l a s s imes sampled
I I I 1 0
5 8 7
5 8 8
6 1 2
6 1 5
6 1 7
I I I 1 0
I11 1 1 0
I I I 1 0
I11 t 1 0 I I I 1 0
5 9 0 0 2 0 0 " t 9 4 7
1 2 0 0 0 " 1 1 0 0 " 1 1 1 7
7 1 0 0 3 2 0 1 3 9 8
' 10000"
1 5 0 0 0 "
6 9 0 0
3 2 0 0
1 3 0 " 1 0 6 7
2 7 0 1 6 6 5
2 8 0 2 1 6 6
1 0 0 " 6 6 8
7 0 0 0 1 4 0 0 " 1 0 9 7
1 3 0 0 0 " 3OOX 1 1 8 5 3
'1OO0OOX 1 1 0 0 " 1 2 4 2
7 0 0 " 5 0 * I 1 3 6
6 3 2 t I11 I 1 0
6 3 9 I I I 1 0
6 4 4 1 I I I
6 7 1 I11
6 7 2 i
1 0
1 0
4 2 0 0 ! 3 0 0 " 1 1 3 0 I I I L
1 0
6 3 9 t I I I 1 0 2 6 . 5 t 1 6 . 5 f 2 2 . 6
6 4 4 I I I 1 0
6 7 1 I I I I 1 9 7
6 7 2 I11 1 0 :
DISSOLVED OXY(3h'
2 7 . 0 1 6 . 0
2 9 . 0 1 1 8 . 0
2 7 . 0 1 8 . 0
2 2 . 6
2 2 . 6
2 3 . 2
CONDUCTIVITY
5 5
A r i t h m e t ~ a >!e'ul
5 3 5
1 3 4 0 5
l h b e r of &laxinun htinimum A r i t h m e t i c C l a s s t i m e s sampled . E l e c t r o m e t r i c E l e c t r o m e t r i c ? Ie an
U n i t s U n i t s
7 . 3 - 7 . 8
,\.laximum W o s / c m at 2 5 ' ~
5 0 1 1 I11 1 1 0 8 0 8 I 2 2 5
5 8 7 I11 1 0 2 9 6 0 0 1 3 2 8
Number of t i m e s sampled S t a t i o n
5 8 8 I I11 1 1 0 4 4 0 1 0 I 5 7 5
6 1 2 I I I 1 0 4 2 1 3 0 2 1 9 7 L
5 8 8 t I I I
C l a s s
2 1 0 5 1
' 1 8 3 0 6
1 0
1 0
1 0
1 0
1 0
1 0
1 0
1 0
1 0
1 0
1 0 I
- 6 1 2
6 1 5
6 1 7
I I I
I I I
I11
6 1 5 1 I11 1 1 0
6 1 7 I I I 1 0
6 1 8 1 I11 1 9 6 1 9 I I I 1 0
-
6 3 2 1 I11 1 0
6 3 9 I I I t 1 0
6 4 4 I I11 1 0
6 7 1 I11 f 1 0
6 7 2 I11 1 0 L
8 . 0
8 . 0
7 . 7
7 . 9
7 . 8
7 . 8
7 . 7
8 . 0
7 . 9
8 . 0
7 . 4
6 1 8 t I I I
6 1 9 I11
3 6 5 0 I 3 3 3
7 . 0
7 . 3
6 . 9
7 . 2
7 . 0
7 . 3
7 . 4
7 . 4
7 . 4
7 . 1
7 . 2
6 3 2 - 6 3 9
6 4 4
6 7 1 - 6 7 2
1 1 3 2
7 . 6
7 . 6
7 . 4
7 . 5
7 . 3
7 . 6
7 . 5
7 . 7
7 . 7
7 . 5
7 . 3
I I I
I11
I11
I11
I I I 1
3 0 1 7 6
3 8 4 7 6
9 9 5
1 9 8 0
7 6 4 1 2 3 4 9
4 5 7 4 1 5 0 5 9
6 4 0 ! 7 9 9
5 5 t 1 0 8 1
2 8 1 1 9 ! 7 3 4 5 8 0 9
1 8 2 3 0 6 5 6 2 8 4 4
8 4 4 t 2 5 2 I 5 1 3
1 1 3 4 5 0 7 7 2 6
TURBIDITY
COLOR
Arithmetic Mean
Station I Class Number of times sampled
Maximum Minimum ESIU NIU
Station
5 0 1
5 8 7
5 8 8
6 1 2
6 1 5
6 1 7
6 1 8
6 1 9
6 3 2
6 3 9
6 4 4
6 7 1
6 7 2
5 0 1 I11 1 1 0
5 8 7
5 8 8
6 1 2
6 1 5
617
4 . 7 f 1.1 2 . 5
2 2 . 2 2 . 4 1 7 . 5
4 . 1 t 1.1 2 . 6
4 . 0 1 . 6 2 . 4
Class
I11
I11
I I I
I11
I I I
I11
I I I
111
I I I
I I I
I11
I I I
I11
9 . 5
5 . 3
1 0 . 6
Maxirmrm Pt-Co Units
1 6 0
1 8 0
2 2 0
1 6 0
2 2 0
1 4 0
8 0
1 1 0
1 2 0
1 2 0
1 3 0
2 0 0
1 3 0
Number of times sampled
1 0
1 0
1 0
1 0
1 0
1 0
1 0
1 0
1 0
1 0
1 0
1 0
1 0
1 . 3 5 . 8
1.1 2 . 4
1 . 8 3 . 8
I I I 1 0 I11 1 1 0
I11 1 0
I11
I I I
6 1 8 1 I I I
6 1 9 I11
Minhum Pt-Co Units
5 5
3 5
2 0
3 5
6 0
4 0
1 5
15
3 5
6 0
5 0
4 5
4 5
1 0
1 0
1 0
1 0 3 . 2 1 0 . 8 2 . 1
6 . 2 1 1 . 6 1 3 . 7
7 . 4 1 . 4 3 . 2
Arithmetic Mean
8 6
8 6
8 1
7 7
1 0 4
9 1
4 7
7 3 -
6 5
8 8
8 0
8 9
9 3
6 3 2 1 I11 I
1 0
6 3 9 I I I 1 0
6 4 4 I I I 1 0
6 7 1 1 I I I 1 0
6 7 2 I11 1 1 0 t
7 . 5
6 . 5
1 6 . 7
1 . 8 1 3 . 6
0 . 6 2 . 1
3 . 5 8 . 2
GROUP I I I
SOUTH - SWTHEAST COUNTY STREAM RUN STATIONS
The t h i r d group o f stream r u n s t a t i o n s i n c l u d e t h e c o a s t a l r e g i o n
f r a n t h e C i t y o f Ven ice th rough Englewood down t o t h e South County
bcundary then eas t t o encanpass t h e Myakka R i v e r Basin. I n t h i s area
t h e r e a r e t h r e e s t a t i o n s which a r e c l a s s i f i e d as Class I ( S t a t i o n s
#0013, #404 and #410) , w h i l e t h e remainder a r e Class I l l . (see Tables
A , B and C f o r Water Q u a l i t y s tandards ) . See map f o r exac t l o c a t i o n s .
SOUTH-SOUTHEAST COUNTY STREAM R U N STATIONS
X O O O B - Myakka R i v e r a t S . R . 7 8 0 B r i d g e X 0 0 1 3 - B i g S l o u g h a t S . R . 7 2 B r i d g e - X 4 0 2 - Myakka R i v e r a t U . S . 4 1 B r i d g e X 4 0 4 - Myakka R i v e r a t RT. 7 2
! X 4 0 8 - Myakka R i v e r a t Snook Haven d o c k 1 4 0 9 - S p r i n g Run a t U . S . 4 1 B r i d g e X 4 1 0 - M y a k k a h a t c h e e C r e e k a t U .S . 4 1 B r i d g e , . # 4 1 7 - Howard C r e e k 6 R o c k i n g H o r s e Lane B r i d g e
VIOLATIONS
Myakka River
S ta t i on : #0008 - Myakka River a t S.R. 780 Bridqe
Dissolved Oxygen Dissolved Oxygen Dissolved Oxygen
- Date - 6/11/84
- S ta t i on : 4'0013 - Big Slough a t S.R. 72 Bridge
Dissolved Oxygen 9/4/84
S ta t i on : #402 - Myakka River a t U.S. 41 Br idge
- Fecal Col i f o rm 9/4/84
S ta t i on : #404 - Myakka River a t S.R. 72
Date - Dissolved Oxygen 7/25/84 Dissolved Oxygen 9/4/84 Dissolved Oxygen 10/1/84
Value - 3.0 2.9
Value -
Deer Creek
S ta t i on : #593 - Deer Creek a t Wentworth St ree t
Dissolved Oxygen 5/29/84 3.9
S ta t i on : #624 - Deer Creek a t the End of Horton Avenue
Dissolved Oxygen Dissolved Oxygen
A1 l iga to r Creek
S ta t i on : #620 - A l l i g a t o r Creek a t U.S. 41 Bridge
Fecal Co l i fo rm Dissolved Oxygen Dissolved Oxygen Dissolved Oxygen Oissolved Oxygen
S ta t i on : #621 - A l l i g a t o r Creek a t Shamrock Boulevard Bridge
Dissolved Oxygen 5/29/84 3.7
Forked Creek
S ta t i on : #623 - Forked Creek a t Route 775 Bridge
Dissolved Oxygen Dissolved Oxygen Dissolved Oxygen
"Estimated Count
TOTAL COLIFORM
*Est imated Count FECAL COLIFORM
6 2 0 ,
6 2 1
6 2 3
6 2 4
*Est imated count:
I I I
I I I
' I11
I I I
1 0
1 0
1 0
1 0 I
2 9 0 0 .
4 3 0
1 9 0 "
1 5 0 "
SO*
2 0 *
10"
l o *
2 2 6
7 4
7 0
2 6
6 2
FECAL STREPTOCOCCUS
I "Estimated Count I
Station I Class h m b e r of times sampled
0 0 0 8 I11 1 0
Mininnnn # .Colonies/lOO ml
6 0 "
Maximum # Colonies/100 ml
2 1 0 0
Geometric Mean
3 7 7
3 2 7 0 0 1 3 I I I 1 0 . 1 3 0 0 " 7 0 " 1 4 0 2
4 0 4
4 0 8
4 0 9
4 1 0
> 1 0 0 0 0 " 6 0 " t 5 7 5
4 1 7 1 I11 I 1 0
5 9 3 t I I I I 1 0 6 2 0 IS1 1 0
6 2 1 1 I I I 1 1 0
6 2 3 I11 1 0
6 2 4 I I I t 1 0 I
9 3 0
1 7 0 0 "
5 9 0 0
I I I 1 0
I f 9 I I I 1 0
1 0 " 1 4 1
4 0 " I 2 5 0
3 4 0 2 3 7 9 I I I
I 9 1 0 0 1 200' . 6 2 5
1 3 0 0 " 1 0 0 " I 5 5 9
> 1 0 0 0 0 " I Z O O * 1 2 2 8
8 7 0 0 1 4 0 " t 1 8 0 8
6 7 0 0 t 6 0 " 1 2 6 3
7 0 0 0 < 1 0 0 " 1 1 5 6 4
5 9 0 0 1 5 0 0 " 1 6 0 4
1 0
1 0
TEMPERATURE
DISSOLVED O X Y m l
-,
Number o € .\laxinun .\linirrmm A r i t h m e t i c S t a t ion C l a s s o
t i m e s scampled Ginhos/cm a t 2 5 ' ~ o s / c m a t 2 5 C I
-
0 0 0 8 I11 1 0 3 9 2 1 5 1
0 0 1 3 1 I 1 0 6 9 4 3 4 7 ,
1 8 0 4 7 6 0 8 4 1 - 2 7 2
4 0 8 1 I11 1 1 0 4 4 6 - 1 7 5 - 2 8 6 1 -
I I I 1 0 2 1 9 8 7 - 1 5 7 3 1 1 2 4 9 6
I 1 1 0 1 1 7 8 9 5 1 2 5 5 3 8 7 5
4 1 7 I I I 1 0 7 1 0 1 3 7 I 4 2 8
5 9 3 ! I11 1 0 I 2 9 4 1 2 t 6 7 4 1 3 8 3 4 1 - i 1
6 2 0 I I I 1 0
6 2 1 I I11 1 1 0 - 6 2 3 I11 1 0
6 2 4 I I I 1 0 '
1 2 1 3 0 5 9 5 3 0 4 8 -
3 4 4 7 0 1 7 3 3 I 1 6 3 5 2 - 4 2 2 8 4 2 4 6 8 2 6 9 4 4
4 3 3 9 0 1 0 1 5 1 1 3 0 6 2 7 ~- -
el!
4 1 0 I 1 0 8 . 0 7 . 3 7 . 6 ,
.\.linimum E l e c t r o m e t r i c .
Units - 6 . 2
6 . 4
7 . 2
6 . 5
6 . 9
7 . 2
>laximum Elec t r o m e t r ic
U n i t s
7 . 1
7 . 9
7 . 6
7 . 5
7 . 7
7 . 7
Number o f C l a s s t i m e s sampled
P -
0 0 0 8 1 I I I I 1 0
A r i t h m e t i c > le ,m
6 . 6
6 . 9
7 . 4
7 . 1
7 . 3
7 . 5
0 0 1 3 I - 4 0 2 1 I11 - 4 0 4 I
4 0 8 1 I I I
4 0 9 I I I -
1 0
1 0
1 0
1 0
1 0
TURBIDITY
COLOR
Arithmetic Mean
1 . 8
Maximum Minimum NTU NTU
4 . 8 I 0 . 7
Station
0 0 0 8
Class Number of times samples
I I I t 1 0
0 0 1 3
4 0 2
4 0 4
4 0 8
4 0 9
4 1 0
Maxirmrm Pt-Co Units
2 2 0
2 8 0
1 3 0
1 8 0
1 6 0
1 2 0
2 2 0
2 6 0
1 0 0
9 0
1 0 0
1 0 0
1 0 0
Minimum Pt-Co Units
6 0
5 0
6 0
6 5
6 0
2 0
5 5
5 0
4 0
5 5
3 0
3 0
3 0
5 . 1 1 . 0 1 2 . 2
3 . 5 4 1 . 5 2 . 2
4 . 0 0 . 5 1 1 . 5
Arithmetic Mean
1 3 4
1 2 4
9 6
1 1 3
1 0 7
6 2
1 0 0
1 1 4
7 9
7 0
5 7
5 1
5 0
Number of times sampled ,
1 0
1 0
1 0
1 0
1 0
1 0
1 0
1 0
1 0
1 0
1 0
1 0
1 0
Station
0 0 0 8
0 0 1 3
4 0 2
4 0 4
4 0 8
4 0 9
4 1 0
4 1 7
5 9 3
6 2 0
6 2 1
6 2 3
6 2 4
2 . 2
3 . 8
4 . 0
8 . 6
I 1 0
I I I 1 1 0
I 1 0
Class
I11
I
I I I
I
I I I
I I I
I
I11
111
111
I I I
I I I
I I I
0 . 9 1 . 6
1 . 3 2 . 1
1 . 7 2 . 6
1.1 1 3 . 4
I I I
I11
I
4 1 7 1 I I I
5 9 3 1 I11 - 6 2 0 111
6 2 1 1 I11
6 2 3 I I I
6 2 4 I I I
1 0
1 0
1 0
1 0
1 0
1 0
1 0
1 0
1 0
2 . 9 I
1 . 3 I 1 i . 0
4 . 0 f 1 . 0 1 2 . 2
3 . 3
3 . 3
2 . 2
1 . 6 1 2 . 6
1 . 5 2 . 3
1.1 1 . 7
NUTRIENTS
Any chemical elements or canpounds tha t are essent ia l t o the l i f e and
t o the growth o f p lan ts and animals are c a l l e d Nut r ien ts . Major Nu t r i en ts
a re Carbon, Ni t rogen and Phosphorous. Other elements such as Su l fu r , Cal-
cium, Magnesium, Potassium, e tc . a re ca l l ed mic ronut r ien ts because t h e i r
presence i s needed i n minor q u a n t i t i e s . The Nu t r i en ts which the labora tory
has determined i n the Bays and the Streams are those i n the Nitrogen Cycle
and i n the Phosphorous Cycle.
Nitrogen Cycle - We have determined the fo l l ow ing canpounds:
N i t r i t e (NO~-N) ; N i t r i t e p lus N i t r a t e ( N O ~ - N O ~ - N ) ; Ammonia
(NH3-N) and Tota l Ni t rogen Kje ldahl (TKN). A l l values are
expressed as Nitrogen.
Phosphorous Cycle - We have determined Dissolved Orthophosphate ( ~ 0 4 - P )
and Tota l Phosphorous (TP). A l l va lues are expressed as Phosphorous.
NITROGEN
The Ni t rogen canpounds which can be found i n waters and wstewaters are
N i t r a t e , N i t r i t e , Ammmia and Organic Nitrogen. N i t r a t e i s an essent ia l nu-
t r i e n t f o r many photosynthet ic organisms and i n some cases, has been i d e n t i f i e d
as the g rowth - l im i t i ng n u t r i e n t . N i t r a t e genera l l y occurs i n t race q u a n t i t i e s
i n surface waters, but may a t t a i n h igh l e v e l s i n some ground waters. N i t r a t e
i s found on ly i n small amounts i n raw danest ic wastewaters, but i n the
e f f l u e n t o f n i t r i f y i n g b i o l o g i c a l p lan ts , N i t r a t e may be found i n concentra-
t i o n s o f up t o 50 mg/l N i t r a t e as Nitrogen.
Amnonia i s n a t u r a l l y present i n surface waters,groundwaters and waste-
waters. Ammonia i s produced l a rge l y by the deamination o f organic conta in ing
canpounds and by the hydro lys is o f urea. I t may a l so be produced n a t u r a l l y
i n the reduct ion o f N i t r a t e under anerobic condi t ions.
The runo f f from land may conta in a g r i c u l t u r a l f e r t i l i z e r s which could
be h igh i n N i t r a t e or Ammonia or Anmonia degradable canpounds.
Organic Nitrogen i s def ined f u n c t i o n a l l y as o rgan ica l l y bound Nitrogen
i n the t r i n e g a t i v e s ta te . Organic Ni t rogen includes such na tu ra l ma te r i a l s
as pro te ins , pept ides, n u c l e i c acids, urea and numerous syn thet ic organic
mater ia ls . A n a l y t i c a l l y Organic Nitrogen and Ammonia can be determined to -
gether and have been re fe r red t o as To ta l K je ldahl Nitrogen. To ta l Ni t rogen
i s re fe r red t o as the add i t i on of N i t r a t e p lus N i t r i t e p lus To ta l Nitrogen
Kje ldahl . A l l o f the above forms o f Nitrogen, as we l l as Nitrogen gas, a re
biochemical ly i n t e r c o n v e r t i b l e and thus, a re components o f the Nitrogen Cycle.
PHOSPHOROUS
Phosphorous occurs i n n a t u r a l waters and i n wastewaters i n t h e form
o f v a r i o u s t ypes o f phosphate. These forms a r e commonly c l a s s i f i e d i n t o
or thophosphates, condensed phosphates, (pyre, meta and polyphosphates)
and o r g a n i c a l l y bound phosphates. These may occur i n t h r e e d i f f e r e n t
forms being, i n t h e s o l u b l e form, i n p a r t i c l e s o f d e t r i t u s o r i n t h e bodies
o f a q u a t i c organisms. The v a r i o u s forms o f phosphate f i n d t h e i r way i n t o
wastewaters, e f f l u e n t s and p o l l u t e d waters from a v a r i e t y of sources. Ortho-
phosphates a p p l i e d t o a g r i c u l t u r a l o r r e s i d e n t i a l c u l t i v a t e d land as f e r t i -
l i z e r a r e c a r r i e d i n t o su r face waters w i t h storm r u n - o f f . Organic phosphates
a r e formed p r i m a r i l y by b i o l o g i c a l processes and a r e c o n t r i b u t e d t o sewage
i n body wastes and food res idues .
Phosphorous i s e s s e n t i a l t o t h e g rowth o f organisms and i t can be t h e
n u t r i e n t t h a t l i m i t s t h e p r o d u c t i v i t y o f a body o f water. I n i ns tances
where phosphate i s a growth l i m i t i n g n u t r i e n t , t h e d ischarge o f a raw o r
t r e a t e d wastewater, a g r i c u l t u r a l dra inage o r c e r t a i n i n d u s t r i a l wastes t o
a r e c e i v i n g water , may s t i m u l a t e t h e growth i n nuisance q u a n t i t i e s o f
pho tosyn the t i c , a q u a t i c m i c r o and macro-organisms.
T o t a l Phosphorous con ten t o f t h e sample inc ludes a l l o f t h e o r t h o -
phosphates bo th s o l u b l e and i n s o l u b i e , o r g a n i c and i n o r g a n i c species. Ois-
so lve Orthophosphate depends on f i l t r a t i o n th rough a 0.45 pm membrane f i l t e r .
EUTROPH I CAT I ON
The presenceo: excess n u t r i e n t s i n waters can produce an enr ichment
i n e i t h e r f r e s h o r s a l t water by chemical elements o r compounds present i n
v a r i o u s t ypes o f wastes. T h i s e n r i c h e n t i s c a l l e d e u t r o p h i c a t i o n . Phosphates
and Ni t rogenous canpounds a r e p a r t i c u l a r l y eu t rophy ing agents where they
supp ly n u t r i e n t s t o b o t h a lgae and p l a n t s , which p r o l i f e r a t e so abundant ly
t h a t a l a r g e p o r t i o n d i e f o r l a c k o f l i g h t . T h e i r decomposi t ion depletes.
t h e water o f i t s D isso lved Oxygen and thus, causes t h e death o f many f i s h
and o t h e r l i v i n g organisms.
DATA PRESENTATION
The p r e s e n t a t i o n has been made i n a format o f a p l o t f o r each
parameter. I n t h e v e r t i c a l a x i s , t h e c o n c e n t r a t i o n fran t h e chemical
species i s g i v e n and i n t h e h o r i z o n a l a x i s , t h e s t a t i o n s a r e i n d i c a t e d .
Below i s a sample i l l u s t r a t i o n o f t h e use o f t h e composite averages o f
t h e n u t r i e n t concen t ra t ions .
1 ZERO
- \
E' C 0 .- Y a L Y C 0 U c 0 U
i MAX IMUM VALUE
MEAN
MINIMUM VALUE
I n t h e f o l l o w i n g pages, an a t tempt has been made t o present a rev iew
o f t h e N u t r i e n t l e v e l s found i n t h e water m o n i t o r i n g a c t i v i t y i n County
waters.
VALUE
J I I 1 I 1 I I \I I I I
S t a t ions
The Bay Run S t a t i o n s were sampled f o r n u t r i e n t s as f o l l o w s :
. . . ................... Bay Run I 4 t imes
..................... Bay Run I I 7 t imes
.................... Bay Run I l l 3 t imes
..................... Bay Run IV 1 t ime
The f o l l o w i n g t a b l e i s p rov ided t o h i g h l i g h t the S t a t i o n s t h a t show t h e
h i g h e s t n u t r i e n t v a l u e f o r each parameter t e s t e d :
* A l l s t a t i o n s show lowest c o n c e n t r a t i o n o f <0 .020 mg / l .
TOTAL PHOSPHOROUS
TOTAL NITROGEN 1 I I I
523 537 1589, 590, 610 1 567
BAY RUN I
KITRITE SO, - S G
(ALL VALUES ARE ZERO)
NITRITE & NITRATE (NO2+NO3) -N
(ALL VALUES ARE ZERO)
.08
d -.. M E .06 Z 0 CI
€-
2 -- k- Z W u .04-- Z 0 U
--
.02--
--
0
--
--
L \ I \I 'd h \I \I \r \I \I I I - - I I
STATIONS: 5 0 7 508 5 1 0 5 1 4 5 1 6 5 1 7 517. 5 2 0 5 2 1 523
STATIONS: 5 0 7 5 0 8 5 1 0 5 1 4 5 1 6 5 1 7 5 1 9 5 2 0 5 2 1 5 2 3
ORGANIC NITROGEN
IONS: 50 ' 5 0 8 5 1 0 5 1 4 5 1 0 5 1 - 1 5 2 0 5 2 1 5 . 3
TOTAL K J E L D A H L KITROGEN
STATIONS: 507 5 0 8 5 1 0 514 5 1 6 517 5 1 9 5 2 0 5 2 1 5 2 3
TOTAL NITROGEN
STATIONS: 507 5 0 8 510 514 516 517 5 1 9 520 5 2 1 5 2 3
STATIONS: 507 508 510 514 516 517 519 520 521 52.3
TOTAL PHOSPHOROUS 0.4--
r+
\
20 .3 - -
Z 0 C
b -- < e: b
0 . 2 U Z 0 U If
-
0
STATTONS: 507 508 510 514 516 517 519 520 521 523
--
1 r 1 1 1 $ 1 -
I I 1 I I I I I I I 1 I - I I 1 I I I I I I I I I
-
BAY RUN I1
NITRITE & NITRATE (N02+N03) - N
0 s - -
- 4 1 CC
.O6-- Z 0 - + 2. -- b Z LC u .04-- Z 0 U
--
0 2 , -
-- o
STATIONS: 529 531 533 534 535 536 537 539 596 606 609
STATIONS: 529 531 533 534 535 536 537 539 596 606 609
-
'Y \r '4 \I k I
A
\I \I \I \I \I \I I I I I I - 1 I I
2.0--
-7
d \
g 1 . 5 - -
Z 0 +. H < cr: k-
u z 0
u z l - ~ : : / 0.5--
-
0 ,
STATIONS: 529 531 533 534 535 536 537 539 596 606 609
ORGANIC NITROGEN
-
1 -
- T ~ I
I
-- 1 -- 1 1 [ A
L t - - 1 I I I I I I I I
I I 1
I I I I I I
I I I I I I I I -
I
TOTAL NITROGEN
STATIONS: 529 531 533 534 535 536 537 5 j 9 596 606 669 I
8 1
ORTHOPHOSPHATE
TOTAL PHOSPHOROUS
0 . g -
-- 4 -. m
0.6-- z 0 w t- < -- r% t- Z
0 . 4 Z 0 U
--
0.2,-
-- 0
STATIONS: 5 2 9 5 3 1 533 534 535 536 5 3 7 5 3 9 596 6 0 6 6 0 9
-
1
-
3 I
: ; ! h ; ; L : ; , I I
BAY RUN I I I
8 3
S I T R A T E S O 2 - N
( A L L V A L U E S ARE Z E R O )
. O L -
-- 4 -. ac
E . 06-- Z 0 H + 3 -- + Z W u. 04-- Z 0 U
-- . 0 2
-- 0 , \I \I \I \ r \I \I \I \I \I \I
I I I I
I I I 1 I STATIONS: 5 4 0 5 4 1 543 545 547 548 5 5 9 5 8 9 5 9 0 6 1 0
ORGANIC NITROGEN
0 s -
- - \ tc E 0 6 - - z 0 C
C < P - + Z W u .OL- Z 0 u
--
.02--
--
0 ;
I
0 . 4 --
0.2--
0 I 1 I I I I I I
I 1 I
I I I I I I I I I I I
STATIONS: 5 4 0 5 4 1 5 4 3 5 4 5 5 4 7 5 4 8 5 5 9 5 8 9 5 9 0 6 1 0
1 . L -
g 1.2-- Z 0
3 b z 0 . 8 u Z 0
- 0 . 6
0 . 4
0 . 2
0 I I 1 1 l l i ~ i l l l I I I I I I I I I I I I I I I I I I I I I I =
STATIONS: 5 4 0 5 4 1 5 4 3 5 4 5 5 4 7 5 4 8 5 5 9 5 8 9 5 9 0 6 1 0
STATIONS: 5 4 0 5 4 1 5 4 3 5 4 5 5 4 7 5 4 8 5 5 9 5 8 9 5 9 0 6 1 0
8 4
AV!!1ONIA N H 3 - " i
-
- 1 !
-
z
7-
I \I \I *
-
!
-- -. -. I 1 . I I I
-
=i= -
-
I
4
I
i \I I I
I I I I
8 5
TOTAL KJELDAHL NITROGEN
T T T
TOTAL NITROGEN
0 . L- 1 I
0 c I 1 I I I I I I I I I I - I I I I I I I I 1 I I I
-
STATIONS: 5 4 0 5 4 1 5 4 3 5 4 5 5 4 7 5 4 8 5 5 9 5 8 9 5 9 0 6 1 0
8 6 ORTHOPHOSPHATE
0 . a -
-- r( \
2 0.6,- Z 0 Y
i- -- u LT + $ 0.4-- U Z 0 w --
TOTAL PHOSPHOROUS
T
0 . 2
- - 0
I
BAY RUN IV
SITRITE N O - - S
(ALL VALUES ARE ZERO)
NITRITE & NITRATE (NOZ+ NO3) -N
(ALL VALUES ARE ZERO)
.08--
-- i
. 0 6 M E
Z 0 - -- C-
2 5 .04,- W U Z 0 V --
. 0 2 ,-
--
0
STATIONS: 562 563 564 566 567 569 5 7 0 5 7 1 572 5 7 3
\I \I \I \r \I \I \I \I \I \ I I I
I I I I I I I I I I
STATIONS: 562 563 564 566 567 5 6 9 5 7 0 5 7 1 572 5 7 3
9 0
TOTAL KJELDAHL NITROGEN 1 .6 - -
1 . 4 - - - --. M
E 1 . 2 - - Z 0 )3
2 1 . 0 - - e i- Z
8 0.8,- Z 0 u
0.6- -
0.4--
0.2--
0
- - - - -
I I I I I I
I I I I I I I
I I I I I I
I I I I I
STATIONS: 562 563 564 566 567 5 6 9 570 5 7 1 5 7 2 5 7 3
1 . 6 - -
1 . 4 rl --. M E 1 .2 - - Z 0
E 1 .0 - - 3 i- Z w 0 . 8 U Z 0 U
0 . 6
0.4--
0 .2- -
0
TOTAL NITROGEN
- - - - -
- - - - -
1 I I I I I I I
1 I 1
I I I I I I
I I I I I I I
I - I -
STATIONS: 562 563 564 566 567 5 6 9 570 5 7 1 572 5 7 3
ORTHOPHOSPHATE
TOTAL PHOSPHOROUS
0.4--
4 --. a0
0.3-- Z 0 C + q -- e: b Z g 0.2-- Z 0 u
--
0.1,-
--
0
--
- - - -
- -
- - I I I I I I I I I I I I
I I I I I I I 1 I I I I-
STATIONS: 562 563 564 566 567 569 570 571 572 573
0.4--
-- 4 --. 2 0 . 3 - -
Z 0 Ci
b - 4 e: b t; 0.2-- U Z 0 U --
0.1--
--
0
STATIONS: 562 563 564 566 567 569 570 571 572 573
- -
- - - -
- - - -
- I I 1 I I I I 4 I I I 1 I 1 1 I I I I I I I I I
-
The Stream Run S t a t i o n s were sampled f o r n u t r i e n t s as f o l l o w s :
........................ Nor th 5 t imes
...................... Cen t ra l 5 t imes
........................ South 5 t imes
The f o l l o w i n g t a b l e i s p rov ided t o h i g h l i g h t t h e S t a t i o n s t h a t show t h e
h i g h e s t n u t r i e n t v a l u e f o r each parameter t e s t e d .
NITRITE & NITRATE
NORTH COUNTY STREAM RUN
NITRITE NO2 -N
5 1.0-- CI
b
2 0 . c Z W U
0.6-- U
0.4--
0.2--
-
0 z z * I + { * * * * : : : I I
STATIONS: 5 4 9 5 5 3 5 4 8 ~ $ 3 5814 62'5 62'6 62'7 6 2 8 629 6130 642 6 7 0
STATIONS: 5 4 9 5 5 3 5 5 8 5 8 3 5 8 4 6 2 5 6 2 6 6 2 7 6 2 8 6 2 9 6 3 0 6 4 2 6 7 0
4. L-
< 3.0--
E" Z 0 CI
c- 2 b 2 . L Z W U Z
'2
1 . 0
0 ,
, - STATIONS: 5 4 9 5 5 3 5 5 8 5 8 3 55J h Z 3 h 2 h h - h 2 S 6 2 9 6 3 0 6 4 2 6'0
ORGANIC NITROGEN
--
--
; - - I -
-
I l I f , l ~ f , l * I
I I I I I I I I I I 1 I I
I I I I I I
-
9 7
TOTAL KJELDAHL NITROGEN
TOTAL NITROGEN 16.0--
14.0--
4 1 2 . 0 -
--. 00 E
z 10.0-- 0 w b
2 8.0-- b Z 4 U z 6 . 0 -- 0 U
4 . 0
2 .0 . . I I I 1 I I I I f
I I I I I I STATIONS: 5 4 9 5 5 3 5 5 5 5 3 3 5 8 4 b 2 5 h l h 6 2 : 6 2 5 6 2 9 b j 0 6 4 2 b - 0
98
ORTHOPHOSPHATE
STATIONS: 549 553 558. 5 8 3 584 625 626 627 628 629 630 642 670
TOTAL PHOSPHOROUS
CENTRAL COUNTY STREAM RUN
1 0 0 NITRITE NO2 -N
.1L-
.14--
3 \ w .12-- E
Z 0 !+ .lL-
3 b Z . o g - W U Z
.06_-
.04--
.02--
0
4 . 0
3 \ 04 E 3 . Q - Z 0 Y
F- -- 2 b 2 2 . k - U 2 0 U --
1 . 0
-
0,
STATIONS: 5 0 1 5 8 7 5 8 8 6 1 2 6 1 5 6 1 7 6 1 8 6 1 9 6 3 2 6 3 9 6 4 4 6 7 1 6 7 2
-
L L b \I L \r \I \I \
STATIONS: 5 0 1 5 8 7 3 8 8 b 1 3 6 1 5 1 b l 8 b 1 9 b j 2 h i 9 h l l * > - l a - 2
-- NITRITE 6 NITRATE (NOZ + NOj) -N
--
-
- -
I I I I I I \
I
-
Tf \I \I V b \I \r \ - 9 '4 I I I I \
\- --
- -
\ I \I
1 0 1
AMMONIA
STATIONS: 5 0 1 587 5 8 8 612 6 1 5 6 1 7 6 1 8 619 6 3 2 6 3 9 6 4 4 6 7 1 67:
4.L-
-- .-I
' 3 . 0 2' -- Z 0 H -- + 3
ORGANIC NITROGEN
W U Z 0 U
1. o_
0
; ; : ~ [ ~ ~ i l I i l f I I
I I I I I I I I I I I I I I I I I I I I I I I I
- STATIONS: 5 0 1 587 588 6 1 1 6 1 5 617 6 1 8 619 b 5 I 6 3 9 4 b 7 l b - Z
1 0 2
TOTAL KJELDAHL NITROGEN
I I t I
I I I
I I I I I I
I I
I I I I I I I I I
STATIONS: 5 0 1 5 8 7 5 8 8 6 1 2 6 1 5 6 1 7 6 1 8 6 1 9 6 3 2 6 3 9 6 4 4 6 7 1 6 7 -
TOTAL NITROGEN 8.0 --
-
6 . Q-
--
4 . 0
-
--
2 . 0
0
: : i 1 £ g i i Til £ f I I I I I I I I I I I 1 I I I I I I I I I -
' IOYS: 5 0 1 5 8 1 5 8 8 6 1 2 6 1 5 h l - 6 1 8 6 1 9 ' h32 6 3 9 6 1 4 6'1 h!
1 0 3
ORTHOPHOSPHATE
STAT
1 . 6
1 . 4
rl -. M 1 . 2 E -- Z 0
1.L-
2 + 0 . g -
U Z 0 " 0 . h -
o . e-
0 . L-
o,
S T A T I O N S : 5 0 1 587 588 6 1 2 615 617 6 1 8 619 6 3 2 6 3 9 6 4 4 6 7 1 67:
--
2.0 - TOTAL PHOSPHOROUS
--
1 . 5
-
1 . 0
-
T I -- I -
-- I L , I I I
0.5 [ ~ _ l , ~ i . r , o I E
I -
IONS: 5 0 1 5 5 7 5 8 3 0 1 2 6 1 5 h i 7 h l Y 6 1 9 6 3 ' 6 3 9 b J 1 6 '1 ( I - .
SOUTH-SOUTHEAST STREAM RUN
NITRITE NO2-N
(ALL VALUES ARE ZERO)
STATIONS: 0008 0013 402 404 408 409 410 417 593 620 621 623 624
NITRITE & NITRATE
0.8--
--
0.6 --.
(NOZ + NO3) -N
M E
Z 0 -- H
C -
4 5 0.4-- z w U Z 0 -- U
0.2--
-- --
0 I I
-
-
-
-
-
-- --
STATIONS: 0008 0013 402 404 408 409 410 417 593 620 6 2 1 6 2 3 624
1 0 7 2 . Q - TOTAL KJELDAHL NITROGEN
4 --. s" 1.
Z 0 Ci
b u a i-
1. u Z 0 U
0 .
I o r I I t I I I I
I I I I I
I I I I I I
I I I I I I STATIONS: 0 0 0 8 0 0 1 3 4 0 2 4 0 4 4 0 8 4 0 9 4 1 0 4 1 7 5 9 3 6 2 0 6 2 1 6 2 3 6 2 4
TOTAL NITROGEN
I I I I I I I I I I I I
I I I I I I I I I I I I -
STATIONS: 0 0 0 8 0 0 1 3 4 0 2 4 0 4 JOY 409 4 1 0 41: 5 9 3 b 2 0 6 2 1 6 2 3 o ' l
TOTAL PHOSPHOROUS
0. g-
rf
0.6-- 2 Z 0 u w 2 + 0 . Z W U Z 0
U o.
--
0
STATIOYS: 0 0 0 8 0 0 1 3 402 I 108 0 1 1 0 1 5 9 i b 2 0 6 2 1 6 2 3 6 2 5
STATIONS: 0 0 0 8 0 0 1 3 4 0 2 404 408 409 410 417 5 9 3 620 6 2 1 6 2 3 6 2 5
ORTHOPHOSPHATE 1 0 8
-- -
-- -
1 1 1 1 T
- - -
I I I I -- I I I 1 z - I I - 1 1 1 1 I I I I 1 I I I
