Soil Run-off in Koko Marina

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Soil Run-off in Koko Marina

• Arianna Ondo, Sascha Williams, Francesca Diaz
• Hahaione Elementary
• Grade 6

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Observations

• We saw dirt flying in the wind and flowing in the
  marina at construction sites. When it rained in a
  residential area we saw fertilizer that someone
  poured on their lawn going into the water.

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Research Question
Is water in certain areas of Koko Marina more
polluted by soil run-off than other areas?
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Backround Information

• Turbidity and transparency is a test of water
  clarity and suspended materials.
• Soil run-off blocks light for animals, plants,
  and ruins the whole habitat by changing
  temperature, ph, and turbidity because the dirt
  covers the bottom.
• Pflueger was charged 5,000-50,000 for doing
  construction that led to muddy rainwater running
  into Pilaa Bay.He polluted the water so bad he
  violated the law.

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Hypothesis
If there is construction in the middle part of
Koko marina then, the water near the construction
sites will be more turbid and less transparent
than the areas farther away because construction
dust and debris will add to soil run off.
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Materials
1. Turbidity test kit 2. Transparency
tube 3.Pencil 4.Paper 5. Gloves 6. Gallon
buckets 7. Beakers (scoop or cup) 8. Umbrella 9.
Calculator 10. Testing Sites (Residential,
Construction,ETC.)
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Procedure-Transparency
1. Drop bucket with rope into water, then pull
out 2. Take beaker and scoop water from the
bucket (make sure your in the shade) 3. Pour
slowly into tube 4. Repeat until you cant see
the black and white disk any more 5. Then read
the number of cm where the water level is at and
write down 6. Repeat steps 1-5 until you have
tested all sites 6-10 times
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Procedure-Turbidity
1. Fill the bucket with water up to the line 2.
Compare the disk in the bucket to the turbidity
chart 3. Write down the results in JTU 4.
Repeat steps 1-3 until you have done all sites
6-10 times
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Testing Sites

• Boat Harbor
• Hancock Landing
• Pizza Hut
• Mariners Cove
• Post Office
• Agriculture
• Koko Isle
• The Penninsula

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Testing Sites
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Results and Analysis of Koko Marina Turbidity

• Analysis-Mariners Cove is the highest in
  turbidity than the other sites. This maybe
  because its by a sewer treatment station or
  because its by a canal.The boat harbor,
  agriculture and post office were all 40 JTU, but
  dont have similar character-eristics. All of the
  settled places like residential and commercial
  sites arent very turbid.

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Results and Analysis of Koko Marina-Transparency

• Analysis- The lowest places are the boat harbor,
  mariners cove,and the Penninsula because they
  are all 50-30 cm.The higher places are Hancock
  landing, Pizza hut, Post office, and Koko Isle
  because they are all settled places from 90-60
  cm. Everything that is low has some way of
  polluting the water. All high places are settled
  and dont erode as much.

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Conclusion

• Our hypothesis was correct in a certain way.
  Construction lets lots of soil run-off into the
  marina and it will effect its habitat in a bad
  way. But its not the only problem. One area had
  very bad results and many reasons for the results
  being that way it could be the sewer plant by the
  area or the canal. Lets just say Koko Marina has
  many problems that need to be fixed or our data
  might be the one that needs to be fixed. This
  leads to our next step.

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Next Step

• Test more construction sites to see if the data
  was good and that the development will hurt the
  marina
• Send letters to the Koko Marina board showing our
  studies and telling them they need to find a way
  to stop the runoff from the construction sites
  and sewers (like replacing pipes)

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The End

• Any questions?