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183
<br /> Approved 10.1.25
<br /> 825 reach an agreement with that association about the potential for in the future continuing this
<br /> 826 relationship.
<br /> 827
<br /> 828 Lamar Proctor: Jonah?
<br /> 829
<br /> 830 Jonah Garson: You can go onto the next one.
<br /> 831
<br /> 832 Lamar Proctor: Venkat?
<br /> 833
<br /> 834 Venkat Yendapalli: I have a similar question I had at last month's meeting. We had similar subdivision. Very high
<br /> 835 density. Smaller lots,with the septic, and one well.
<br /> 836
<br /> 837 Beth Trahos: Sure. So,we have both of the folks who, if you have questions about the septic,we have our
<br /> 838 septic engineer, and we have our environmental consultant with regard to the well who are both
<br /> 839 available to talk with you. I would say in my view, a 20,000 square foot lot is actually quite large in
<br /> 840 other areas of the triangle.
<br /> 841
<br /> 842 Venkat Yendapalli: Yeah, no, I've lived in Cary before I moved here. Tell me about it. But on sewer it's a different
<br /> 843 story compared to a septic site, next to all the big lots. Your neighbor has 13 acres, and other
<br /> 844 neighbors I was check, 2, 3 acres, 1 acre, some of the are small but most lots are larger. While
<br /> 845 the development is not harmonious with the surrounding areas, I have a concern about this
<br /> 846 approach, you know, last month was a similar application that one well, having a lot of water
<br /> 847 capacity and all that, but that's not a foolproof design. No fault tolerance building to it because all
<br /> 848 these 49 lot owners, if it is a prudent build, will go dry with one well failing. It can't be,flip a switch
<br /> 849 and they get water from someone else. Like there's no option having a backup well. Or two or
<br /> 850 three wells and to connect it.
<br /> 851
<br /> 852 Beth Trahos: Let me have the Ward come up and talk with you about the wells. I would point out that in this
<br /> 853 area there are lots of variety of different sizes, including within the town of Hillsborough, more
<br /> 854 traditional subdivisions.Ward, let me ask you to talk about the wells if you would.
<br /> 855
<br /> 856 Ward Marotti: Ward Marotti, Spangler Environmental. So we had the initial hydrologic analysis in there,that is
<br /> 857 the direct results of the well draw down that we did where like previously we're in the process of
<br /> 858 implementing those data into a model and having our PHD hydro geologists use those data to
<br /> 859 extrapolate in using the models, but just based on the raw that we have collected and have
<br /> 860 reported on in the document presented to you all today, there's clear evidence that,for one thing,
<br /> 861 just backing up with regard to existing conditions,wells are at different depths, and the other two
<br /> 862 wells that were analyzed are both at 200-foot deep, the well that is proposed and has been drilled
<br /> 863 is 649 feet deep in connection with a totally different aquifer with hundreds of feet of 100 percent
<br /> 864 impervious bedrock in between those different aquifers at different elevations below in the
<br /> 865 substrate below the surface. And so, with regard to your question or valid concern with regard to
<br /> 866 other adjacent wells filling,those wells would fail in the context of their connectivity to different
<br /> 867 aquifers. There are hundreds of feet of vertical distance between the aquifers that different wells
<br /> 868 are connected to. To the best of my knowledge and looking at the, at least the available data,
<br /> 869 which is certainly not all the wells in the area are not part of the county's database,or at least the
<br /> 870 easily accessible GIS layer that's available, but none of those wells are in the 600-foot depth
<br /> 871 zone, and as a result, they are sort of by default, by definition have documented that they are in
<br /> 872 contact with different aquifers and that again are those aquifers are separated by hundreds of
<br /> 873 vertical feet of impervious bedrock.And so, this aquifer down here,for one thing, the results of our
<br /> 874 direct data analysis clearly show that both 200-foot wells that were our two comparative wells
<br /> 875 relative to the proposed community well. Both of those are 200 feet deep, and there was no
<br /> 876 impact whatsoever with a significant draw down of the proposed well to a steady state of like 90
<br /> 877 gallons a minute I believe. Something, substantive consistent draw down. No noticeable, not
<br /> 878 even documented, observable changes to those other wells, and again, that in no small part is
<br /> 879 directly related to the connectivity of those aquifers, or the lack thereof. And so,while aquifers
<br />
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