The City of Yuma has approved an estimated $940,000 a year for biosolids removal and disposal. That's a substantial amount of public money, but the figure needs some explanation before anyone starts treating it as money already spent.

The September 2, 2026, City Council record for MC 2026-147 / RFB-26-339 establishes the estimated annual expenditure authorized for the work. It does not establish how much the City has actually paid.

That distinction matters, particularly as questions surrounding AgTech and its State Trust Land leases continue to draw attention.

The Council record concerns the City's biosolids removal and disposal arrangement. The State's subsequent lease action concerns particular parcels of land. Neither record establishes that City biosolids were delivered to those parcels, or that the City's disposal arrangement automatically ended or continued unchanged after the State acted.

There is another piece of the picture.

The City's wastewater-treatment webpage says digested and thickened sludge from the Figueroa Avenue facility is hauled by AgTech for agricultural land application. That tells residents how the City publicly describes its disposal process.

It doesn't tell them where each truckload went.

The webpage identifies no receiving field or parcel, provides no delivery dates or load counts, and does not explain where sludge from the Desert Dunes facility is taken. It also doesn't establish whether work under the September 2 award has begun.

Those details require records that describe actual operations, not simply an approved arrangement.

An approved contract isn't a payment record

There are four different financial records worth keeping straight.

A Council award establishes what the City approved. An executed agreement establishes the contractual obligations. Invoices show what a contractor charged for particular work. Payment records show what the City actually disbursed.

Each answers a different question.

The $940,000 estimate provides a starting point for examining the City's disposal costs. It cannot, by itself, tell residents how much biosolids handling has cost during a particular period, how much has been paid to a contractor, or whether the approved annual estimate will be fully used.

To answer those questions, the signed agreement, invoices and payment ledger would need to be examined together.

What the bid specifications can tell us

A third-party reproduction of specifications labeled RFB-26-339, hosted by GovTribe, provides additional detail about the work and the facilities involved.

It includes daily volume ranges that help explain the scale of the City's biosolids operations. But the reproduced document has unresolved date and version questions. Until those are settled, it should not be treated as the authenticated final solicitation or executed agreement.

The quantities also need careful handling.

Adding two daily volume ranges produces a combined range on paper. It does not establish how much material the City actually produced or transported over a year.

Volume and weight aren't the same thing. Neither is the weight of wet sludge necessarily comparable to its dry solids content. Truck capacity introduces another variable.

A cost comparison built on those figures would need consistent measurements over the same period. Otherwise, the arithmetic might be correct while the conclusion is wrong.

Where does the additional $2.5 million estimate come from?

One of the larger questions is whether replacing the current disposal arrangement could cost Yuma substantially more.

A public claim estimates an additional $2.5 million annually in replacement-disposal costs.

That estimate remains unverified.

The reviewed Council award does not contain the comparative calculations needed to establish the figure. Nor does it provide binding quotes from alternative disposal facilities showing what replacement service would cost.

That doesn't mean those records don't exist. It means the material reviewed so far does not establish the claimed increase.

A defensible estimate would require more than finding another facility and calculating the distance between two points on a map.

The City would need to know how much material must be handled, whether additional treatment or dewatering is required, how many truckloads would be necessary, and what transportation would cost.

Receiving facilities could charge tipping or processing fees. Switching arrangements could introduce equipment, administrative or transition expenses.

And there is a practical question that cannot be skipped: Would the proposed receiving facility actually agree to accept Yuma's material, in the required quantities, under the assumed terms?

An available facility is not necessarily an available disposal contract.

Until those inputs are documented, the $2.5 million figure remains a claim rather than an established replacement cost.

What Pima County can, and cannot, tell Yuma

A University of Arizona article discussing biosolids management in Pima County attributes a reported cost increase to Ian Pepper.

That example helps illustrate why biosolids disposal can become expensive when management arrangements change.

But Pima County's experience is not a ready-made forecast for Yuma.

The article is not an independently audited county expenditure ledger. Even if the reported increase is accurate, applying it to Yuma would require comparing actual material quantities, treatment processes, transportation distances, disposal requirements and costs.

Without that comparison, Pima offers context, not a price tag.

The records that could answer the bigger questions

The City's approved $940,000 annual estimate is useful. So is its public description of AgTech's role in hauling sludge from Figueroa Avenue.

But neither tells residents the complete story of where the material goes, what the City has paid, or what a different disposal arrangement would actually cost.

Several records would help close those gaps: the executed agreement and amendments, contractor invoices, City payment records, measured biosolids production, hauling tickets, disposal destinations and written quotes for alternative service.

Together, those records could support a meaningful comparison of the existing arrangement and possible replacements. Any such comparison would also need to identify which costs are included, the period being measured and which assumptions remain uncertain.

For now, the public record establishes an authorized annual expenditure estimate. It does not establish that the full amount has been paid, that a replacement would cost another $2.5 million, or that the State's lease action necessarily changed where the City's biosolids were going.

Residents deserve to know what the City is paying for, where its biosolids are ending up, and what alternatives would cost.

Those are reasonable questions about public money. They deserve answers from the underlying records, not estimates presented as settled facts.

Clarification: This article has been updated to correctly describe the $2.5 million replacement-cost claim as public but unverified, and to distinguish the City's documented biosolids arrangements from the separate State Trust Land lease action.