23
<br /> 931
<br /> 932 Beth Trahos: Sure. So,we have both of the folks who, if you have questions about the septic,we have our
<br /> 933 septic engineer, and we have our environmental consultant with regard to the well who are both
<br /> 934 available to talk with you. I would say in my view, a 20,000 square foot lot is actually quite large in
<br /> 935 other areas of the triangle.
<br /> 936
<br /> 937 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 /> 938 story compared to a septic site, next to all the big lots. Your neighbor has 13 acres, and other
<br /> 939 neighbors I was check, 2, 3 acres, 1 acre, some of the are small but most lots are larger. While
<br /> 940 the development is not harmonious with the surrounding areas, I have a concern about this
<br /> 941 approach,you know, last month was a similar application that one well, having a lot of water
<br /> 942 capacity and all that, but that's not a foolproof design. No fault tolerance building to it because all
<br /> 943 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 /> 944 and they get water from someone else. Like there's no option having a backup well. Or two or
<br /> 945 three wells and to connect it.
<br /> 946
<br /> 947 Beth Trahos: Let me have the Ward come up and talk with you about the wells. I would point out that in this
<br /> 948 area there are lots of variety of different sizes, including within the town of Hillsborough, more
<br /> 949 traditional subdivisions. Ward, let me ask you to talk about the wells if you would.
<br /> 950
<br /> 951 Ward Marotti: Ward Marotti, Spangler Environmental. So we had the initial hydrologic analysis in there,that is
<br /> 952 the direct results of the well draw down that we did where like previously we're in the process of
<br /> 953 implementing those data into a model and having our PHD hydro geologists use those data to
<br /> 954 extrapolate in using the models, but just based on the raw that we have collected and have
<br /> 955 reported on in the document presented to you all today, there's clear evidence that,for one thing,
<br /> 956 just backing up with regard to existing conditions,wells are at different depths, and the other two
<br /> 957 wells that were analyzed are both at 200-foot deep, the well that is proposed and has been drilled
<br /> 958 is 649 feet deep in connection with a totally different aquifer with hundreds of feet of 100 percent
<br /> 959 impervious bedrock in between those different aquifers at different elevations below in the
<br /> 960 substrate below the surface. And so,with regard to your question or valid concern with regard to
<br /> 961 other adjacent wells filling,those wells would fail in the context of their connectivity to different
<br /> 962 aquifers. There are hundreds of feet of vertical distance between the aquifers that different wells
<br /> 963 are connected to. To the best of my knowledge and looking at the, at least the available data,
<br /> 964 which is certainly not all the wells in the area are not part of the county's database, or at least the
<br /> 965 easily accessible GIS layer that's available, but none of those wells are in the 600-foot depth
<br /> 966 zone, and as a result, they are sort of by default, by definition have documented that they are in
<br /> 967 contact with different aquifers and that again are those aquifers are separated by hundreds of
<br /> 968 vertical feet of impervious bedrock.And so,this aquifer down here,for one thing, the results of our
<br /> 969 direct data analysis clearly show that both 200-foot wells that were our two comparative wells
<br /> 970 relative to the proposed community well. Both of those are 200 feet deep, and there was no
<br /> 971 impact whatsoever with a significant draw down of the proposed well to a steady state of like 90
<br /> 972 gallons a minute I believe. Something, substantive consistent draw down. No noticeable, not
<br /> 973 even documented, observable changes to those other wells,and again,that in no small part is
<br /> 974 directly related to the connectivity of those aquifers,or the lack thereof. And so,while aquifers
<br /> 975 that are in higher elevation in the cross-section so to speak of the depth below the surface,the
<br /> 976 impacts and levels and quantity of water in those higher up aquifers are not the same and not
<br /> 977 directly connected to and thereby affected by the disconnected much deeper aquifers. And so if
<br /> 978 that aquifer 200-foot, runs out of water, it is not the resultant cause of the lower aquifer drawing
<br /> 979 down, and similarly there's a possibility that that lower aquifer could run out of water in the context
<br /> 980 of the neighborhood and not have any effect on the 200-foot deep aquifers. And I guess the
<br /> 981 applicant can speak with regard to the private utility that's going to take over, upon approval and
<br /> 982 build-out of this proposed development,there's going to be a private utility that's going to take
<br /> 983 over the maintenance and ownership of this well system.And so,the supply of potable water to
<br /> 984 the users will, correct me if I'm wrong, be dependent upon that hired private sector utility.
<br /> 985
<br />
|