2019-02-07 Hearing Transcript - Piilani Partners LLC SMA 18-070

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NANCE: Yeah— DELA CRUZ: What are the chances of it getting contaminated with the things that you guys are bringing down with the drill bit, and how do you guys plan or what is the method of containing the settlement from going down or being contaminated to the next aquifer? NANCE: Well, this is coming up under pressure, so nothing is going to leak from the Mauna Loa lavas this way. The flow is going to be out. The drilling itself, they use water and a little bit of foam, NSF approved, and that's what carries the cuttings out while they're drilling. So, there, there really isn't a contamination that's going to go on, but there is this leakage. Just as, on the side, we drilled a—State drilled a deep hole in Keopu on the other side of the island. Had no idea that they would run into the situation which they did. It was flowing out. Ground elevation there was 730, so the water didn't come all the way to the surface. We just sealed the leak last year, and for 2001 till last year, three or four hundred gallons a minutes was coming out of the deep aquifer into the salt water and the basal groundwater below. That's in Keopu. IKEDA: So, the Mauna Kea, Mauna Loa Aquifer, is it flowing, is continuously flowing into the ocean? NANCE: Very good question. You'll take her thunder away. Two things about this groundwater we learned through the deep drilling process. One is they can trace using isotopic analysis where this recharge came from on Mauna Kea, and from that isotopic analysis, it's from a zone of about 6,000- to 6,500 -foot elevation. So, that's where it came from initially. The other thing that goes on here is that there's a tidal response. So, in other words, that water is flowing through the aquifer and ultimately discharging at depth off -shore. BUNN: If—did you? CLARKSON: No, if there are no other questions, please continue. BUNN: Thank you. I'd like to direct your attention back again to the aquifer map and make sure I understand it. So, generally, if there is a well drilled in the Onomea Aquifer system, that would also pump from the Mauna Kea lavas? NANCE: Yes. BUNN: Okay, and how about in the Hilo Aquifer system? Are there—are there any wells there that pump from the Mauna Kea lavas? Any other wells? NANCE: Not absolutely known, but up the Saddle Road, a well called Saddle Road Well A which is a Department of Water Supply well, it's at a ground elevation of about 1,900, and if this is the Saddle Road and this is the well, this is the boundary. It was my design, oversaw construction, but we didn't have any weathered interface to tell us that we did or didn't. So, I can't tell you whether Saddle Road Well A does that or stops and takes it out of Mauna Loa, but there's certainly the possibility that that's the case. EXHIBIT D 10