Bullhead City Council Work Session on Wastewater Infrastructure Projects - April 1, 2025
Bullhead City Council Work Session on Wastewater Infrastructure Projects - April 1, 2025
The Bullhead City Council held a special meeting and work session on Tuesday, April 1, 2025, beginning at 3:30 p.m. (note: the agenda indicated 11:30 a.m., but the transcript records a 3:30 p.m. start). All council members were present except Council Members O'Neill and Ring. The work session focused on an overview of current and upcoming capital improvement projects at the city's wastewater treatment plants and lift stations, presented by Utilities Director Mark Clark. The session concluded with a public comment, a motion to move into executive session (approved 7-0), and a plan to reconvene for the regular council meeting at 5:30 p.m.
Discussion Items
- Wastewater Treatment Plant Projects: Mark Clark presented a detailed slideshow covering the Section 10 wastewater treatment plant, which is being upgraded from 4 million gallons per day (MGD) to 6 MGD due to population growth. Key projects include:
- Aeration Basin No. 2: Currently under construction (hole dug, rebar in place, floor pouring soon).
- Oxidation Ditch Rehab: Scheduled for next year (full rehab of the ditch, last rehabbed in 2007); equipment ordered this year due to a 9-month lead time.
- Clarifier Rehabs and New Clarifier: Clarifier No. 2 has failed; temporary equipment is being installed. Full replacement and rehab of three clarifiers will be presented at the next council meeting. Equipment for clarifiers also ordered this year to avoid delays.
- Pipe Replacement: An above-ground pipe that burst and flooded the plant months ago is being replaced preemptively with PVC (instead of ductile iron) to prevent another failure. The new pipe will be installed on the city's terms.
- Headworks Project: Nearing completion (coated, backfilled, rebar for floor installed).
- Lift Station Rehabs: Clark reviewed three major lift stations (16-2, 18-2, 18-1). Lift stations 16-2 and 18-2 were completed on or under budget. Lift station 18-1 is significantly over budget (approximately $1 million over) due to extreme concrete degradation (rebar disintegrated, walls lost 5–6 inches of concrete). The project includes a rehab and expansion, plus installation of a bar screen and wet well wizards to reduce hydrogen sulfide gas and ragging.
- Systemwide Improvements: The city is installing wet well wizards and Cascibio loggers (dissolved oxygen, hydrogen sulfide, and level sensors) across large lift stations to promote aerobic bacteria and reduce odors. An activated carbon scrubber is being added at the 10-4 lift station (Rotary Park) to address remaining odors. The Lakeside Drive sewer line is undersized (24-inch, needs 30-inch) and laid flat, requiring future replacement.
- Cost Projections: Clark estimated $60–$70 million in capital projects needed between now and 2028. All ordered equipment is included in the upcoming capital budget and will not be billed until after July 1, 2025.
Public Comments & Testimony
- Harvey Pryor: Acknowledged that odors have significantly improved compared to 20–25 years ago. Asked about the use of moisture barriers on concrete to prevent degradation from hydrogen sulfide gas. Mark Clark replied that coatings are applied but do not last indefinitely; the damage is primarily from gas above the waterline.
Key Outcomes
- No formal votes were taken during the work session; the presentations were informational.
- Council will consider approval of equipment purchases for the oxidation ditch and clarifiers at future meetings (the current night's regular meeting and the next council meeting).
- Motion to move into executive session was made, seconded, and passed unanimously (7-0). The regular council meeting was scheduled to begin at 5:30 p.m.
- The city will continue to address deferred maintenance and seek funding for the capital improvement plan.
Meeting Transcript
Good afternoon. This is Tuesday, April 1st, 2025. It's 3 30 p.m. We're here for a special meeting, an executive session. Call this meeting to order. All council members are present except for council members O'Neill and Ring. All right, we're gonna start with our work session, then we'll move on to the executive session. Good afternoon. Well, we're here this afternoon to hear from our utilities director, Mark Clark. Uh he's uh kind of in the middle of a whole bunch of projects, especially at our wastewater treatment plants. Uh not only things that are on tonight's agenda, but items that'll be coming at the next couple of agendas. So we thought it would be a nice opportunity to uh have Mark kind of go through all the projects, talk about what's happening so that you and the public can under better understand, maybe take about 45 minutes or so today just to go through the projects and have an opportunity to have workshop talking about the project. So with that, I'll turn it over to Mark. Thank you, Mr. Connor, Mr. Mayor, Council. Uh we've got a as Toby said, we we've got a lot of things going on, and we we've given some tours to some of the city council members, so they've had an opportunity to see some of this firsthand, and we would extend the same offer to the rest of the council if they want to go out and see what the facilities really are like. Uh pictures are worth a thousand words, but seeing it physically is worth 10,000 words. So um if you could beg bring up the slideshow. Okay, this is just our our cover slide, which shows a picture of our section 10 plant and all those little white boxes are projects that we've got to do over there at that plant. If you could go to the next slide. Okay. This is another picture of that same section 10 wastewater plant. But what we've done is we've kind of color coded it so that you can see what's happening when. Um if you look at the also one other project, it's in blue because it's next year for a finish date, but we've actually started construction on our second aeration basin. That's on the kind of the bottom left there, that blue box you see, that's aeration basin number two. That's actually under construction. We've got the hole dug, we've got the rebar into the existing uh aeration basin all exposed, and uh they're getting ready, hopefully in the not too distant future to put in the base so we can start pouring the floor of that. Also, what we've got set up for next year, and this is also a council agenda item for tonight is if you look at the just to the left, just to the right of where that aeration basin is, that's our oxidation ditch. That is uh last time that was rehabbed was about 2007, and it's in pretty poor shape. And I've got some pictures I'll show you a little later. Uh, but we're gonna be rehabbing that next year, doing a full rehab on that. Uh part of that rehab is going to include uh new pumps, motors, uh, and those are the items that we're gonna request that you approve tonight, and we'll get to that when we get to the pictures a little later. Um, and then all the blue items you see, those are the rest of the items that'll be next year. Uh, you see, kind of in the middle left part of the screen, you'll see three clarifiers. There's one new one and two rehabs we're going to be doing. The middle one there that we call clarifier number two has actually failed. Uh, yesterday and today we have a company out here putting in some temporary equipment so we can get it back up and running until the permanent replacement equipment is manufactured. And those these these um the equipment for these three clarifiers will be coming to you at the next city council meeting. The reason for that and for the oxidation ditch equipment being ordered this year as opposed to next year, is there's a nine-month lag between when we order and when we receive the equipment. So, in order to get it to be able to be installed next year, we have to order it this year. However, we do not have to pay any dollars out until next year. So we won't be paying anything until after July 1 for any of any of this equipment. They understand that this is part of our next year's budget, and they will not be billing us until next year. All of these items are included in our capital budget, which will be presented to you later this this year. Um we also have our RAS WAS, which is the blue one, kind of a little bit further up from the clarifiers. That is all the equipment that works with our clarifiers. And then you could see the other items. Yellow would be done the year after that, and then the green would be orange and green would be done in future years. So moving along, if you go to the next slide.
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