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drainage improvements that both DOT and the County uses. I’m not sure if such standard details <br />even exist. Well, he indicated that such design -. <br /> <br />LEITHEAD TODD: Ki, we did bioswales on Ane Keohokālole, so I would think that something of <br />a similar nature could be put into the design here. If it’s a bioswale, it slows down water, it’s got <br />plants, it helps, you know, catch anything. And if you go through the road, you see it all over the <br />place. <br /> <br />EMLER: Yeah, we have a best management practice bio-filter that precedes the runoff into the <br />drywell systems on Ane Keohokālole Highway, the roadway that was just finished. It’s a little <br />different there because what we have there is a curb and gutter system that collects the water first <br />into a location where then is discharged in the one location; it’s just a short little bioswale preceding <br />the drywell. So in this case we’ve got, actually, the swale that is not indicated on a typical section <br />to be vegetated; it just says landscaped. And so I think some details will need to be worked out <br />certainly, and I don’t know what kind of detail would come out of it. We don’t have any standards <br />in the County of Hawai‘i for bio-filtration. Other jurisdictions have worked on them, and we <br />certainly could refer to that to the details that might have been approved by HDOT. But I haven’t <br />seen them, I’m not familiar with them, and it’s something we need to look at, and probably confer <br />with HDOT on it. <br /> <br />LEITHEAD TODD: But I’m thinking that if we had some kind of general condition in there <br />regarding best management practices to handle the runoff, something like what Roy had been <br />suggesting, that that would allow us the room to work with both the applicant, as well as DPW, to <br />work on some type of mitigation measure. <br /> <br />EMLER: Sure. <br /> <br />BOWMAN: Did you have a comment? <br /> <br />ZIMPFER: I’d just like -. <br /> <br />BOWMAN: Could you please use the mike. Thank you. <br /> <br />ZIMPFER: Yeah, you know, the Department of Public Works is focused on preventing flooding <br />where, as opposed to the conditions that National Park Service is looking for; we are looking to <br />prevent impairment of biological resources. And this road, the new proposed frontage road, is <br />much closer to the coast than is the Mid Level Road; so what might be appropriate up higher may <br />not be good enough for what’s down closer to the water. <br /> <br />ARAI: Madam Chair, maybe I can speak to that as well. The condition, the language offered by <br />the applicant speaks directly to practices appropriate to minimize the potential impact on anchialine <br />ponds. So that is a clear directive to the Department of Public Works on what the SMA permit is <br />anticipating to be accomplished by the incorporation of these best management practices. So I think <br />it’s quite clear, it’s clear to the Department of Public Works what the intent is; that is to incorporate <br />best management practice to minimize impacts to anchialine ponds. So, to me it’s a clear directive. <br /> <br />EMLER: There was a system that was also put in at Kaloko Subdivision, the Light Industrial Area, <br />where we did pre-filtrations with a separate inlet box upstream of the main drywell entry. Those <br />contain filters. But all of that is paved swale, so it’s a different condition. As to whether we can <br />9 <br />EXHIBIT A <br /> <br />