Opinion: Amid CU South misinformation, better alternative is overlooked
The decisions around how best to protect Boulderites from flood damage and risks are complex, given our location at the base of steep foothills. I was the lead council member in the late ‘80s for Boulder’s first efforts on flood protection and have followed the CU South process closely, so I’m familiar with the issues. And information circulating now is, to a large extent, misleading and biased.
First,
the flood protection provided by the proposed “100-year” detention pond on
South Boulder Creek is inadequate and incomplete. The fundamental problem is
that, in a large storm like we had in 2013, water flows into SE Boulder (much
of which is a floodplain) from multiple sources — South Boulder Creek (SBC)
from Eldorado Canyon, Viele Channel from Viele Lake area near Shanahan Ridge,
and multiple local drainages. And we can expect more “atmospheric rivers” as
the climate warms. So, some flooding is inevitable.
The
proposed flood detention “pond” only addresses one source — SBC. Flood maps
show that, even if SBC is “detained,” plenty of water will come into SE
Boulder. And, of course, if the flood is bigger or lasts longer than the
limited “design flood” used to size the too-small detention pond, it will
overflow and flood the area anyway.
Unfortunately,
building the flood mitigation system as currently designed may lead many
residents to assume that it will protect them, and so they may be totally
surprised and unprepared when it overflows, and also when water floods their
neighborhood from other sources.
Second,
the argument that the CU South development will help our housing situation is,
frankly, nonsense. The Annexation Agreement (AA) for CU South allows 750,000
square feet of non-residential development. The AA projects approximately 1,100
housing units in 1,500,000 square feet of residential development, a mandated
2:1 ratio that is completely inadequate. That amount of residential development
would have been marginal even for the original 500,000 square feet of
non-residential development that CU proposed. But at the last moment, CU upped
the non-residential amount by 50% to 750,000 square feet, which the City meekly
accepted. So, Boulder’s and the surrounding communities’ housing situations
will suffer.
The
argument about providing permanently affordable housing on-site is equally
misleading. The AA only anticipates 100-110 affordable units out of 1,100
total, with no standards as to how affordable they will be. That’s only 9% to
10%, compared to Boulder’s normal requirement of 25% affordable units, and an
actual need of over 50% to maintain our economic diversity. A terrible deal!
The
latest nonsense I saw was that the AA provides “legal assurance” as to what CU
can do on the land. Let’s be clear — the AA can be changed by CU and five
council members agreeing. There is nothing in the AA that gives the citizens
any say; to gain that would require yet another referendum. It would have been
trivially easy to insert wording requiring a citizen vote for any increase in
development, impacts, reduction in housing, etc. But that didn’t happen.
So,
what’s a better alternative? The city never seriously analyzed anything except
flood detention ponds, so we citizens are forced to sort out other options
ourselves. I analyzed the cost to floodproof the 260 structures that, in theory
though not in fact, would be protected by the proposed “100-year” pond. I used
the city’s floodproofing numbers for basements, walls and doors, adjusted for
inflation, and estimated the numbers of structures by type. I found that this
would cost somewhere in the $40-50 million range. That’s way less than the cost
of the current design, currently projected at $66 million, and which I fully
expect to increase significantly when CDOT imposes conditions around the U.S.
36 bridge and how the dam hooks to its embankments.
This
building-based floodproofing approach, as Frasier Meadows Manor has now
implemented, would protect the buildings from flooding from all sources, not
just South Boulder Creek. The city could combine it with lining sewer pipes to
prevent backflows, helping property owners to install floor drain backup
preventers, and creating a real emergency alert system. That combination would
prevent most flood damage.
This
approach would also allow us to completely avoid the downtown-sized CU South
development. CU could then sell the land to the city as Open Space at a
reasonable price, and the wetlands and habitat could be restored to close to
pre-mining conditions, as in the original reclamation plan for the gravel pit
before CU scuttled it. And it would be useful to capture flood waters. Yay!