|
there is a culvert, again, its just collecting water from the road. Youll notice on the road
<br />that is a low point. Theres water coming from the Hamakua side, as well as from the
<br />Puna side, collects in two 24-inch culverts, flows to the Mormon Church property and
<br />diagonally across the DJSM property.
<br />What was represented to you at the last hearing was that there is going to be two
<br />24-inch culverts within the DJSM property and that is, Ill let Yen talk a little bit about
<br />that, but that is not the final piece. What was talked about, in fact, if I can, I think it may
<br />be easier if I go up there; and Ill point things out, and Yen can explain the details if we
<br />need to.
<br />Again, Im not sure how well you can see this but the subject property is situated here on
<br />Kilauea Street. The culverts come in just adjacent to the Hamakua side of the property
<br />line and, again, Im referring to the flood study for Dr. Allen Takase as prepared by Yen
<br />Fong.
<br />Again,therestwo24-inchculvertscomingacrosshere.Thewaterflowstoalowpoint
<br />through the property. Again, to accommodate the water from those two 24-inch pipes,
<br />what Yen had looked at initially was two 24-inch pipes coming through the property in a
<br />culvert.
<br />I want to point out, first of all, that this area is proposed to filled, so the water from the
<br />property itself cant get into this culvert. So this culvert is handling off-site flow. And
<br />its not, theres no connection in dry wells or anything to any of these culverts on the
<br />property. So all were doing is taking flow thats already there and continuing it on.
<br />In discussions with the Department of Public Works, what theyve come up with is
<br />actually putting in one 24-inch pipeline through this area. What that does is it creates less
<br />capacity for the water to flow, and it would create a ponding situation within the
<br />designated floodway here. It will slow the water down and then move it along. So,
<br />again, its not going to be shooting out, theres less water coming through.
<br />So, again, there was asking of whether theres mitigation measures that could be done
<br />and, again, I think Yen in his response to comments from Public Works and concerns has
<br />looked at that. So, again, the original capacity, weve choked it down a little bit creating
<br />a ponding. What happens then is if theres overflow, itll go around and come back into
<br />the stream a little further downstream. So you dont change any of the total flows within
<br />this area; but weve slowed down, weve ponded up and moved it in a slightly different
<br />area, a little further downstream possibly. So, again, that is what were looking at, is
<br />that -.
<br />The other thing I think, you know, Yen pointed out to me, and then you can confirm, is
<br />that there were concerns about, this is an open channel and, you know, theres ability for
<br />water to seep down, and were going to lose that in a culvert. In a situation as soon as
<br />theres water flowing in, what that means is the ground is saturated and its not seeping in
<br />anymore. So theres no change in the water flow at the point. So, again, your ground is
<br />11
<br />
<br />
|