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The site I gathered Water Samples From is near Fifty Second and Dahlia Street in Denver Colorado! Two culverts drain the property that sits to the South-East Of the Dahlia 52nd Intersection. The culverts are located east of the property!


The property itself is on land that rises slightly from the collection point! The Property is Fenced off with signs warning that hazardous conditions exist on the property and you should not enter! Pic There are buildings on top of the rise as it intersects Dahlia; but they seem to be for storage of non-toxic materials! The property does rise after that!


What surprised me the most was the amount of water coming from the two culverts that drained the property. Of course there were what appeared to be collection wells on the property! Pic From the property, The water flows under some railroad tracks and into a containment system that varies on how deep the water is by the amount of debris blocking the drainage culvert on 52nd street! From there the water disappears into private property with so sign of it! I was told later by an Employee of Denver Health and Environment that he discovered another holding pond for the water!


While collecting water from the first holding area, I noticed a strong emanation of Volatile Chemicals from the mud! The water itself flowed clear with no outward smell! Besides the possibility of there being some chemicals in the drainage from the site, the area, I collected from was down flow from the railroad tracks and a petroleum pipeline! Pic The only surprise I obtained from basic testing of the water was a finding of 1ppm of Ammonia!


Given all that, I called the Denver Health and Environmental Department to inquire about the property! The investigator who went out there said that it was involved in a large superfund site; which I could not confirm on the internet! He told me about the second official holding pond to apparently decontaminate the water! He had no further information on the site; but he was trained in invertebrate biology. He found it odd that there were no higher forms of aquatic beetles in the water. Since there were leeches, I would assume they were feeding on something of a higher nature!

Just found this site which mentions the 52nd and Dahlia Site!!!!

Pictures of the 52nd and Dahlia Site!


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This site turned out to have the most diversity of life of any of the sites I examined! There were Cattails, duck week, another type of floating plant more dense than duckweed and various other rooted small plants! There were water skippers, snails, planaria, leeches, and various nematodes in the bottom mud! Some were about 2 inches long. There were shrimp like creatures about 1/8 of an inch long max. There were other crustaceans of various shapes about 1/8th to 1/4th inches! There were many forms of motile single strands of trichomes from most likely filamentous Cyanobacteria! There were many diatoms or varying size and shape! There were also Hydra, Gastrotriches and apparently a Tardigrade!!


Protozoa wise there were quite a few I did not know and was unable to key down! There were several specials of Spirostoma. The Giant slim elongated Spirostoma appeared have been among them! Not as massive as S. ambiguum and longer than S. minus , Up to 1,5mm, it seems a distinct Spirostonum! The excretory vacuole was very large! pic There where Spirostoma dividing! There were Paramecium with large inclusions! There was one interesting specimen that appeared to have long cilia or bristles that did not appear to be used! pic There was Euplotes , Urocentrum , Arcella like, and another amoeba with a test and fine long pseudopodia, a Stentor species, there was one distinct flagellate , and various others I captured you can look at!


The Various VIDCAPS and QuickTime Movies from 52nd and Dahlia!


Day one of Samples from 52nd and Dahlia!!!


Second Page of Day One of Samples from 52nd and Dahlia!!!


Day Three samples from the top of the container of the 52nd and Dahlia Sample - In a Three Gallon Container!!!


Day 39 smaple from the 52nd and Dahlia Sample!!!


Capture of a Hydra from Day one Sampling - Page One!!!


Capture of a Hydra from Day one Sampling - Page Two!!!


Fun Capture of a Planaria from Day one of the Sampling!!!


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This page last updated on August 22, 2004.