The Voice of Janesville and Rock County
PUBLIC ACCOUNTABILITY • CIVIC LITERACY • COMMON-SENSE CONVERSATIONS
Vol 2. No 43 — October 2, 2026 – 1937 Words – a nine-minute read.
Part One of this series, “The Real Hurdle at GM/JATCO Isn’t the Ballot Box — It’s the Balance Sheet,” is now in print. Four more issue papers follow, plus a concluding piece that draws the threads together — six installments in all, running between now and Election Day.
Each paper stands on its own. Together, they make a simple argument: the referendum will settle a political question on November 3, but it will not settle the harder one — what this land can support, at what cost, under what rules. That question survives the vote regardless of how it goes.
We also want to remind readers of our upcoming community forum at Hedberg Public Library, where representatives of all sides will discuss the GM/JATCO site in one room, on the record. Our aim for that evening is the same as our aim in print: facts over hype, evidence over volume. The forum is not a contest to see who can spend the most or shout the loudest — it is a chance for this community to hear the strongest version of every argument, side by side, and judge for itself.
Watch for details on the date and time. Read each issue paper as it publishes. Come ready to ask questions.
— RH Gruber, Publisher/Editor
(Part Two) A TALE OF TWO PARCELS: SHOULD JANESVILLE SPLIT THE GM/JATCO SITE?
The site’s own contamination map may matter more to its future than the referendum does — and Janesville has already started acting on it, whether anyone’s said so out loud or not.
(Janesville, WI) — Every conversation about the old GM/JATCO property tends to treat it as one decision. Two hundred fifty acres, one buyer, one future.
That framing may be wrong. And the site’s own history is the reason why.
The north parcel, the footprint of the original assembly plant, is the more heavily contaminated half. Former City Manager Kevin Lahner has described the soil there in blunt terms: riddled with decades of petrochemical contamination, like Swiss cheese. That ground is currently covered by leftover concrete and asphalt from the demolished plant, which may be functioning as an informal environmental cap, even though it’s technically sitting in violation of city ordinance.
The south parcel, the old JATCO haul-away yard, roughly 110 to 115 acres, was used for storing and shipping finished vehicles, not manufacturing them. It’s meaningfully cleaner, and it’s further along in the process. The state already granted it environmental case closure ahead of the main plant site. The city attempted and failed to get awarded an EPA environmental justice grant to fund housing, a park, and a community building on about 40 acres of that southern section, specifically because it’s the cleaner ground.
So, here’s the real question hiding underneath the referendum debate: should Janesville stop treating this as one 250-acre decision, and start treating it as at least two or more — a north half potentially destined for green space, and a south half genuinely ready for residential and commercial redevelopment?
THE QUESTION NOBODY’S ANSWERED YET
Strip away the referendum politics, and there’s a single fact-finding question this entire debate actually turns on: is the north parcel’s contamination genuinely incompatible with intensive redevelopment at any price — or is it simply more expensive than anyone’s willing to spend right now?
Those are two very different problems, and Janesville hasn’t formally answered which one it’s facing. If the answer is “incompatible at any reasonable price,” then a park isn’t competing against a better alternative. A park is making productive use of ground that was never going anywhere else. If the answer is “merely expensive,” then a permanent park forecloses an option the city might otherwise have grown into, particularly if a future hyperscale or advanced-manufacturing buyer needs every acre this site has to offer.
That’s not a question for a blog post or a ballot question. It’s a question about the same kind of environmental assessment work the city is already doing on the south end that should be extended, deliberately, to the north.
WHAT A SPLIT WOULD GET RIGHT
Remediation standards in Wisconsin, like those in most states, are tied to end use. Land destined for passive park use can often close out with capping and deed restrictions rather than full contaminant removal. Residential use demands the opposite: the most stringent standard available, because people will dig basements, trench utilities, and live on top of that soil for decades. If the north parcel’s concrete cap is already doing real environmental work, formalizing it as parkland may mean paying for what’s mostly already true, instead of paying to excavate an entire assembly-plant footprint to residential standards.
A split also de-risks the half of the site that’s actually ready to move. A developer evaluating 110 clean, closure-certified acres faces a fundamentally different calculation than one evaluating 250 acres where the worst-case scenario is still an open question. Separating the parcels lets the south end proceed on its own financing and its own timeline, without every buyer pricing in the uncertainty still sitting on the north end.
And a park converts a quarter-century of liability into an asset today, not eventually. A fenced, contaminated industrial site drags down everything around it. Green space, even capped, even restricted from disturbance, reverses that immediately, while the harder problem next door gets solved on its own track.
REALITY CHECK:
The referendum sets a political threshold. The contamination map has already been setting an economic one for years — quietly, parcel by parcel, with no ballot required.
WHAT A SPLIT WOULD RISK
Here’s the counterargument, and it deserves consideration: 250 contiguous acres for exactly the kind of project this city says it wants. The strongest prospective buyers for this site — hyperscale data centers, heavy battery manufacturing — need scale as much as they need power and rail access. Carve off the north half permanently, and Janesville may be taking its best or worst option off the table.
“Cap and forget” also isn’t as final as it sounds. Concrete currently sitting in violation of city ordinance doesn’t become a permanent environmental solution just because it’s declared parkland. Institutional controls require monitoring, maintenance, and enforcement indefinitely. That is a standing obligation, not a one-time decision.
And a park doesn’t pay property tax. Every acre converted to permanent green space is an acre that stops generating revenue, in a city explicitly pitching this site as an economic-development opportunity. That’s a legitimate trade-off for a council to defend, separate from whatever else recommends it.
There is a point that needs clarification. If the site is split, the referendum’s four-hundred-fifty-million-dollar threshold does apply per parcel or to the property as a whole. Get that wrong, and a split either invites easy threshold avoidance on the developable half or creates a legal fight nobody’s anticipated.
WHAT OTHER COMMUNITIES HAVE ACTUALLY LEARNED
Janesville doesn’t have to guess how this plays out. Milwaukee’s Menomonee Valley already ran this exact experiment.
That 140-acre former rail yard carried its own severe industrial contamination. The city and the Wisconsin DNR split it almost exactly along these lines: roughly 60 acres became an industrial park, roughly 60 acres became public parkland and river-front stormwater infrastructure. It took nearly three decades from first planning to final DNR case closure. Today it’s considered one of the state’s signature brownfield turnarounds, more than 1,400 jobs on the developed half, with the park half doing double duty managing stormwater for the entire valley.
That’s the encouraging precedent. Here’s the sobering one.
Chicago’s South Works tried something similar on its old steel mill site, carving out park space early, while leaving the rest for later redevelopment. The park opened. The rest didn’t, for more than twenty years, through multiple collapsed developer deals, each one running into the same contamination-cost wall the last one hit. The project only regained real momentum recently, built around a containment barrier for roughly seven percent of the site too polluted to fully remediate.
The lesson isn’t that splitting a site fails. Menomonee Valley proves it can work, using the same DNR process Janesville is already running through. The lesson is that carving off a park doesn’t make the harder parcel’s problems disappear. It buys time to solve them separately. Depending on financing and political will, that clock can run anywhere from a few years to a few decades.
THE BOTTOM LINE
A split isn’t a novel gamble. It’s a more formal version of what the development advisory board has already acknowledging doing, and it has a working, in-state template in Menomonee Valley that ran through the same regulatory process this site is already in. But Chicago’s experience is the reminder that carving off a park is the easy half of this decision. The harder half, what actually happens to the parcel that doesn’t become green space, still has to be solved on its own terms, with its own financing, and with patience measured in years, not news cycles.
Rules before deals applies here too. Before Janesville commits to a park on one end and a housing development on the other, it owes itself a clear, documented answer on what the north parcel can support. That answer, and not the referendum, is what should actually decide this.
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Public Accountability • Civic Literacy • Common-Sense Conversations
“Democracy flourishes when citizens understand not only how government decides—but why.”
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Public Accountability • Civic Literacy • Common-Sense Conversations
“Democracy flourishes when citizens understand not only how government decides—but why.”
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Community Spotlight: Havana Coffee
If you are looking for a place to reflect on your civic journey—or just fuel up before a council meeting—stop by Havana Coffee at 1250 Milton Avenue. It is a true Janesville gem, where espresso meets engagement.
With hearty food, warm service, and a strong commitment to local journalism, Havana Coffee proudly supports the Rock County Civics Academy and all who believe in informed participation.
We are grateful to Daniela and her team for creating a space where ideas percolate and conversations matter.
Nowlan Law Firm and Attorney Tim Lindau
We also extend our thanks to Attorney Tim Lindau and the Nowlan Law Firm for their support of civic education and democratic renewal. We value Tim’s encouragement—and his belief in the power of our mission.
We extend special thanks to the John and Lynn Westphal family and the Mark and Lori Warren family. Along with John and Lynn, Mark and Lori are deeply committed to this community and its future. Their support for the Rock County Civics Academy and our programs strengthens the outlook for a better Rock County community.
Together, with partners like Havana, Nowlan Law, the John and Lynn Westphal family, and the Mark and Lori Warren family, we are building a culture of engagement that honors both tradition and transformation.
HYPOTHETICALLY SPEAKING: Where ideas meet action—and citizens shape the future.
A CALL TO LEADERSHIP
Leadership isn’t about ego—it’s about service.
It’s showing up, listening deeply, and acting with purpose.
Three ways to begin:
• Volunteer with a civic group.
• Serve on a local board or commission.
• Run for public office and lead the change.
“If not you, who? If not now, when?” — Hillel the Elder
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©2026 Hypothetically Speaking and Rock County Civics Academy. All rights reserved. Produced in partnership with the Rock County Civics Academy to promote open dialogue, ethical leadership, and civic participation across Wisconsin’s heartland. Publisher/Editor: RH Gruber, Correspondents: Paul Murphy, DuWayne Severson, All Illustrations by B. S. MacInkwell, unless otherwise noted. Published by CSI of Wisconsin, Inc. P. O. Box 8082, Janesville WI 53547-8082 (All Rights Reserved)
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