100 Paidge Ave

Greenpoint

"Bacteria counts" "Dissolved oxygen" "water sampling"

New York City DEP
Nature walk steps
NATURE WALK SAMPLING DATA - AUGUST WATER SAMPLES

ABBREVIATIONS:
Enteroc: Enterococcus bacteria - bacteria of the gut that indicate untreated sewage
CFU: Colony Forming Unit - one cell or a small number of bacterial cells - CFU's are determined for a 100 milliliter sample volume VALUES >100 are considered a health risk
M: Meter
Temp: Temperature in degrees Celcius
0/00: Parts per thousand - Ocean water salinity is approx. 35 ppt
        
Date Weather Time Depth O2 % Temp salinity  (0/00) Enteroc.CFUs   COMMENTS
8/11/09 Sunny 11:55 0M 151.2 27.3 19.60 10 Mid-incoming tide - sunny- 30ºC Rainfall 8-10-09 = 0.52", JFK
    12:05 1.0 M 66.5 24.37 20.82 10
8/12/09 Cloudy 14:47 0M 71.2 24.27 20.88 107 High outgoing tide, 25ºC, light rain beings to fall during site visit, Rainfall 8-11-09 = 0.0", JFK
    14:51 1.0M 53.0 24.07 21.24 41
    14:55 2.0M 43.5 24 21.31  
8/14/09 Sunny 9:42 0M 28.4 23.60 20.28 0 Low Tide, sun emerged during 1st surface reading, no wind, 30ºC, water depth apprx 1m, small fish, crabs, shrimp, striped anemone, green&red algae - Hypothesis: Sunlight increased rate of photosynthesis over course of sampling period - Rainfall 8-13-09 = 0.02", JFK
    9:53 1m 33.9 23.42 20.98 0
    9:59 1m_2nd 35.7     No sample
    10:02 0M 2 nd 36.0 23.56 20.36 No sample
8/15/09 Sunny 11:03 0M 104.7 25.76 20.41 0 Low tide+rise, breeze, 92ºF, many crabs,small fish -water depth apprx 1m Rainfall 8-14-09 = 0.0", JFK
    11:08 1M 106.6 24.72 20.86 10
8/16/09 sunny 9:56 0M 266.0 26.18 20.65 10 Low-outgoing tide, little/no wind, 91ºF/34ºC - approx. 2 hrs before low tide, ANIMAL LIFE: artificial tide pool in lowest step with triangular depression: actively feeding barnacles, striped anemone, polychaete worm borrows, small crustaceans (isopods?), grass shrimp, swimming blue crabs; schools of small fish, diving cormorant, mussel shell with barnacles: Re: 1M sample contained particularly high concentration of unicellular phytoplankton - estimate 10x1000's per ml. Rainfall 8-15-09 = 0.0", JFK
    10:00 1 M 126.8 25.01 20.93 20
8/18/09 sunny 12:35 0M 76.4 22.69 25.03 10 Low-outgoing tide, little/no wind, 90ºF - approx. 2 hrs before low tide. Few phytoplankton cells. No blue crabs observed - Artificial tide pool has little water - no shrimp or other small crustaceans active except for barnacles - fiddler crab - school of small fish Rainfall 8-17-09 = 0.0", JFK
    12:48 1M 76.5 22.07 24.95 10
8/22/09 cloudy 9:59 0M 75.8 25.98 17.8 6015 Start of  outgoing tide -water covered lower two steps - no crabs, fish or invertebrates are visible. Cloudy with a 5 min rain shower. Extensive oil slick visible on the surface of the creek Rainfall 8-22-09 (<9AM)= 0.74"; Rainfall 8-23-09 = 0.02"
    10:06 1M 46.3 25.39 21.86 3441
  10:17 2M 38.65 25.2 22.94 No sample  
8/23/09 Cloudy 11:22 0M 84.8 26.12 19.51 20 Hi incoming tide, cloudy, oil slick remains, much garbage. Single small green crab (<3cm) on top submerged step, large blue crab clings to piling just below surface, approx. 5 grass shrimp here also, school of small fish apprx 20 ft from shore jumping from surface as if under predation Rainfall 8-22-09 (<9AM)= 0.74"; Rainfall 8-23-09 = 0.02"
    11:29 1M 30.7 25.20 22.60 52
    11:35 2M 29.3 25.2 22.92 109-160
8/30/09 Sunny 12:09 0M 60.3 25.28 20.54 153 bottom step barely covered, inhabited by school of 1-3 cm long fish, larger fish just beyond over deeper submerged bottom platform, large blue crabs and small green crabs - no grass shrimp - no tide pools (water drained), Rainfall 8-29-09 = 0.55"
    12:19 2M 19.1 24.77 21.80 10
      
Apollo Street Site, Brooklyn                                                  
8/30/09 Sunny 13:02   0M 58.6%
  O2
25.36  0/00 21.01
   C
  60
 CFU
               
    13:05   1M 49.80 25.03 21.36 31
APOLLO STREET: calm no effluent from pipe apprx. 30 yds west - floating booms close along shore - samples and readings from outside booms, large blue crab (inside boom) and small school (5-8) of fish 10-15cm long just outside - boat wake waves caused hydrogen sulfide odor and an oil slick that appeared to extend from region of yellow booms to west
               

admin, Sarah Durand

Power_plant

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