Week 44, Part 2

C&K Roofing also installed our interior metal liner in rooms that will be humid or cleaned with a pressure hose. Here they are installing corner trim to finish the installation in the UV disinfection room-



Here is a wide view of the UV room after All Wall epoxied the lower concrete wall. Some trim is sitting in the lower level waiting for primer. (If any of the metal wall panels look mismatched it’s just the limitation of Photoshop auto-merge!)-



Last week the Belt Filter Press and related equipment were placed inside. This week the piping between the Sludge Pump and the Belt Press was installed-



Back outside Mechanical, Challenger Electric continues routing conduit into the Power & Signal vaults near the east end. You can see 5 total knock-outs in our stem wall below the accent-colored CMU blocks. Any conduit going through these holes takes a 90 bend up into the floor of the Blower room. This is where the Motor Control Center will be installed in a couple weeks-



Here is a secondary duct bank, the one heading towards our Reuse Water Tank on the left and the Effluent Pump Station. I am standing the Effluent vault while taking this picture-



This is a view of the Mechanical building and the grade in front of it (north). Last week this area had several trenches for electrical conduit running to the Generator and Transformer pads (center and center-right) the power vault in front of the propane tanks, and a light pole base just off frame lower left-



A wide view of the Influent Lift Station. Right of frame you can barely see the gate to the existing lagoons. The vaults in the center, right to left, are the Pump vault, a manifold vault where the flow of two pumps in joined, then a metering vault. Challenger is installing conduit for the main power to the Lift Station. A panel rack will be installed near where Brent is workin’ the shovel- (pretty sure it’s Brent?!)



A REALLY wide view from Toetly Road on the left to the lagoons on the right-

Week 44, Part 1

From last week we still have roofing materials on site while the metal roof on the Mechanical building is wrapped up-



The containment walls for the Chemical Storage pad were poured early in the week-





By mid-week CNI’s crew put a smooth finish on the upper portion of the wall. Only a foot or so will be above grade after fill is put in for the access road that runs adjacent to the Chem Storage pad-



North of Operations the structural fill was placed and compacted-



Then fine gravel for a sidewalk grade and forms were built-



And finally the concrete pour for the Operations building sidewalk and driveway entrance (into the Maintenance/Storage room)-



John Gabbard of CNI is the one-man finishing crew for now-



The finished product speaks for itself! -

Week 43, Part 2- Electrical & Roof wrap-up

Here is a preview of things to come- Electrical! In the final few weeks Electrical, and Landscaping to a lesser extent, is about all there is to discuss!

There was a slight delay in Duct Bank action until the vaults came in for Challenger Electric. Now we have all the vaults they need to route Power, Control and Signal wires.

These two outside of the east wall of the Mechanical Building are known as PV-A and SV-A (Power Vault, which also runs Control wire, and Signal Vault.) The power, control and signal wires, for anything outside the Mechanical Building, go through these vaults. The Motor Control Center will be on the other side of the wall to the right of the picture- inside the Blower Room. It will all become clear in the next few weeks!




Within a day or two the conduit was extended from the Duct Bank and attached to a plywood form in the vault opening-





The eastern end of the Duct Bank is past the Operations Building and heads to vaults PV-C & SV-C-



Todd takes a moment to review (admire?) the work up to this point-



As the week progressed Challenger dug trenches in all directions north of the Mechanical Building. In this area they needed to set vault PV-B and two light poles as well as connect conduit to the Transformer and Generator pads-



The roofers were also busy trying to wrap up Mechanical. Raw materials were staged north of the Sludge Basin for a few days-



The nearly-completed roof on one of the nice days-

Week 43, Part 1- UV units & Belt Filter Press room

Heads up to those following this Blog- you're about to get several e-mails in a short span! I've had some blog posts waiting for final review & publishing but the Electrical schedule and some Pre-Start-Up details have taken all my spare time for the last few weeks.

For time reference- Week 43 was the last full week in March so these events are just over a month old. We will catch up quickly!

The UV disinfection units were loaded in a couple weeks ago. Each unit has 10 racks of UV light tubes. Each rack of lights has it's own ballast. There are 3 UV units therefore 30 nice, stainless steel ballast units to be installed. Here a CNI employee has been patiently hooking these up at the west end of each UV unit-





Over at the Operations Building the "Bagging Area", an open work bay next to the Headworks room, needs a vented metal ceiling.



And here it is several hours later-



Meanwhile there is still work to do in the Lift Stations. This is a shot down into the Influent Lift Station. You can see the white hardhat of a CNI crew member-



In the Belt Filter Press room, things are happenin'. John Gabbard is helping get the main piece of machinery put into place- the Belt Press itself-



Against the east wall of the room we see the Sludge Pump. This will draw sludge all the way from the Treatment Basin, a few hundred feet away-



And now the Belt Press is in it's final position-



On the west wall is a 5 hp air compressor-



And within a day or two All Wall finished installing the Metal Liner Panel in this room-

Week 42, Part 2- Painting, roof & piping

Back at Mechanical, most of the interior paint work is done so it's time to hit the doors-







Here is the Belt Filter Press room after the high-performance interior painting is finished. In this room and the UV room (next picture), the walls currently covered with foil-lined insulation panels will have metal liner panels installed soon-



And the UV room after the epoxy paint has been applied-



The roofers are wrapping up details on ridge caps and soffits-



Here are "during" and "after" shots of the Blower units being bolted up-





And finally a site view taken early in the week before the chem tanks were in place-

Week 42, Part 1- Containment Pad & Electrical

Last week we poured the slab for the Secondary Containment Pad. We call it the "Chem Pad" for short since the Chemical Storage tanks will sit on this concrete pad with a short containment wall. Liquid ferric sulfate is needed for phosphorous removal in our system. It will be stored in two large tanks. On the same pad, inside the wall, our chemical feed pump & controller will sit in a hot box. But we'll be looking at that in a couple weeks.

Here is the fresh slab and the forms for the short containment wall being built-





Most of the early blog entries were about big segments of work- building the Treatment and Phosphorous Removal structures, the Operations building and finally the Mechanical building. Now, we're mainly down to details. But I will try to guide the blog through the details at a steady pace while still trying to find interesting pictures or observations on the work at hand.

We're going to see a lot of the Challenger Electric crew, or their work, in the final two months of the job. Here is a view I've shown before- one of the main duct banks going from the MCC in Mechanical up to the Operations building. This carries power, control and signal to the systems installed up there-



This week Challenger began setting all the sonotubes for light bases around the main site. Here Todd has placed the sonotube over the conduit stub-ups and is making sure it will sit straight after the concrete is poured in-



Another soon-to-be light base near the Chem tanks. Oh, wait- we didn't see how the Chem tanks got there!-



So, here's the first Chemical Storage Tank being hoisted into place-



You can see there is room for two on the pad-



And at the left edge of this wide view of the Phosphorous Removal structure & roof, you can see the 2nd chemical tank being lifted into place-



More details in the next entry...