Expert Witnesses Model Surprising Flood Risks in Sand Mine Lawsuit

The case of Emil C. Shebelbon, II v. Upstream Holdings, LLC ET AL (Montgomery County Cause No. 15-10-10710) provides fascinating new insights into how sand mines can affect flooding. This case is NOT about broken dikes, unauthorized discharges of sediment-laden water, or mines inundated by super-storms such as Hurricane Harvey. It involves the opposite of all those things. Yet it still has implications for state regulations – or lack thereof. Specifically, I’m talking about setbacks of mines from rivers, lack of best management practices, reclamation of mines after the completion of mining and monitoring of floodway development.

All of the mines around Shebelbon’s property (bottom center) lie completely within the West Fork floodway (cross-hatched area). Development in floodways should not impede flow.

Defendants in this case appear to have filled in or walled off more than 200 acres of floodway property north of Shebelbon. That should have raised eyebrows from Washington to Conroe City Hall, but didn’t.

Two sand mines north of Shebelbon occupy more than 200 acres of floodway. The one closest to I-45 has been abandoned without remediation. Mining debris still litters the site. Shebelbon’s property lies immediately to the south, across the river.

Plaintiff’s Property Did Not Fill Floodway

The plaintiff in this case, Emil Shebelbon, purchased approximately 200 acres of land on the southwest corner of the San Jacinto West Fork and I-45 North about 20 years ago. He operates a motorsports facility there with dirt tracks and jumps for cyclists. Most of his land is in the floodway at the original level. He did not bring in fill. However, he did push some dirt into mounds to create the jumps. Very little impervious cover exists. It resembles a park. If you were going to build a business in the floodway, this is one of the few you might consider. It does not obstruct floodwater.

Increase in Flood Frequency, Depth and Erosion

When Shebelbon bought his land, everything north of him was farm, ranch or forest land. Then one mine came in and another. They expanded and started building up their property or walling it off from the floodway with dikes.

Shebelbon soon started to notice an increase in the depth and frequency of floods. He also started to lose land to erosion during statistically small floods.

Allegations in Lawsuit

Shebelbon’s lawsuit alleges that:

  • Mines blocked half of the floodway, forcing their flood water south onto his property, a violation of state law.
  • Cutting the floodway width in half forced floodwaters up to 3-4 feet higher on his property.
  • The increased flow in a smaller area increased the velocity of floodwaters.
  • That increased what hydrologists call “sheer stress,” the force necessary to start erosion.

Modeling showed shear stresses increased upwards of 0.5 pounds per square foot. The hydrologists claim that’s enough to cause substantial land and bank erosion near and within the Shebelbon Property. That, in turn, widened the river, eroding Shebelbon’s property, they say. Shebelbon estimates he lost seven acres due to erosion caused by constriction of the floodway (see photos below).

The mine north of Shebelbon’s property on the San Jacinto West Fork. Shebelbon’s property is out of frame to the right, underneath the nose of the helicopter. To visualize the height of the dikes, compare activity in the red circle with the following photo.
A dredging expert estimates that the height of the berm at this point is 50-60 feet based on the size of the dredge. Note: this photo and the one above were taken on April 21, 2020, more than a year after the hydrologist’s study. Dikes here are likely taller than 2018 LIDAR data in the study indicates.

Federal, state, county, and city regulations all prohibit restricting the conveyance of floodways. So how did this get permitted? That will be the subject of another post.

Court documents show that the mines deny any connection to Shebelbon’s damages. They issued simple, general denials and are fighting Shebelbon tooth and nail.

Surprising Expert Witness Testimony

Shebelbon, however, has produced hundreds of pages of expert witness testimony to support his claims. This 197-page document downloaded from the Montgomery County Clerk’s office contains the testimony of several experts. For this post, I’m focusing on Exhibit E-22: Flood Impacts from Surrounding Activities, prepared by Dr. David T. Williams and Dr. Gerald Blackler. Their testimony and credentials run from pages 19 to 101 of the PDF. (Caution: 19 mb download.)

Surprisingly, experts for the plaintiff found that the problem is most visible in smaller floods, i.e., less than 18-year floods. 100-year floods can overtop dikes and spread out. But smaller floods cannot.

Despite hundreds of posts on the relationship between sand mining and flooding, I have not previously focused on the phenomenon described by these experts. But every flood expert I talk to – at local, county and state levels – says their findings make perfect sense.

Looking west. Compare height of dikes on right with river bank on left by Shebelbon’s property. Photo 11/2/2020. Also note how little flood storage capacity is left in ponds.
This abandoned sand mine virtually blocks TxDoT’s auxiliary bridge on the north side of the river (upper right). TxDoT commonly uses such auxiliary bridges to convey water in floodplains. Photo 11/2/2020.

Public-Policy Concerns Raised by Shebelbon

Shebelbon’s case has not yet gone to trial. But I see similar situations every time I get in a helicopter. Together, they raise some disturbing public-policy issues. For instance:

  • Do we need greater setbacks of mines from rivers? Greater setbacks would allow greater expansion of floodwaters and help protect neighboring properties.
  • Do we need a comprehensive set of best management practices for sand mines that cover reclamation and abandonment? Restoring the natural floodplain instead of leaving an elevated mine next to the freeway might have prevented some of Mr. Shelbelbon’s damages.
  • What happens when local officials turn a blind eye to those apparently violating regulations? Is there a higher authority to enforce compliance – short of expensive lawsuits?

Hopefully, the TCEQ or State Legislature can address these questions. But it won’t happen without public pressure.

I would simply ask.

Why should miners’ property rights outweigh those of a neighboring business or resident?

Food for thought as we approach the upcoming legislative session!

Posted by Bob Rehak on 11/4/2020

1163 Days after Hurricane Harvey

The thoughts expressed in this post represent opinions on matters of public concern and safety. They are protected by the First Amendment of the US Constitution and the Anti-SLAPP Statute of the Great State of Texas.

Harris County Commissioners Vote to Explore Using Flood-Bond for Maintenance, Possibly Floating Another Bond

At the October 27, 2020 Harris County Commissioners Court meeting, Precinct 2 Commissioner Adrian Garcia introduced a motion from the floor to explore using flood bond funds for maintenance projects. The motion was not on the agenda, nor did he circulate it before the meeting. It caught some commissioners off guard. Minor changes in wording between what the motion said, and how Garcia and Commissioner Rodney Ellis described it, will keep court watchers guessing about their true intent.

Harris County Precinct 2 Commissioner Adrian Garcia

In the end, the motion passed. It didn’t commit commissioners to anything more than conducting a survey and exploring options. However, last Tuesday’s discussion gives voters a peak over the horizon. It reveals what commissioners think and how desperate some are to find new sources of revenue rather than reign in runaway spending.

Garcia Explains Rationale for Motion

View the discussion yourself online. Click on Departments (Part 4 of 5). Start at approximately 4:21 into that segment. Below is a close transcription.

Adrian Garcia: The flood control district has developed the future operations and maintenance needs for the projects that the district will be constructing using the bond program. The overall need for the next 10 years is ninety seven million, with an average annual budget increase need of approximately 10 million per year. Major infrastructure that the control district owned and maintained are detention ponds, earthen channels, concrete channels, and outfall. It’s extremely important that the county funds the proactive maintenance and deferred maintenance for all Harris County owned infrastructure.

I see the spreadsheet that the district has submitted for their 10-year, cost-increase projections for bond projects and growth only as of 10/16 of this year. I am curious as to why some of the heavy equipment, the vehicles, management software implementation, the customer service, the (garbled) software, large repair projects, why these couldn’t be paid out of the bond funding [Emphasis Added, see below] versus using general-fund dollars?

And so I’d like to propose a motion that would touch on the customer-service satisfaction aspect of the flood control district. (Interruption) …

…so the customer-service satisfaction model, the risk-based model and the deferred-maintenance model.

Garcia Proposes Motion

Adrian Garcia:  And so my proposed motions would read that Harris County flood control district should perform a customer satisfaction survey for deferred maintenance and services to develop the maintenance cycle and overall maintenance budget needs.

The flood control district should develop an overall condition assessment for the infrastructure and based on the risk of failure and risk of potential flooding, the flood control district should develop a prioritized criteria and maintenance-needs budget and the Harris county flood control district needs to take a comprehensive look at the condition of all existing infrastructure and identify maintenance needs that have been deferred for years due to budgetary or any other reason. There are many areas where repair work can be significantly large and may also qualify for a capital project. And the Budget Management Department needs to evaluate if we can fund this through a bond program [Emphasis Added, see below].

So that’s the motion I’d like to propose.

Judge, just make sure that we’re not forgetting how to maybe better deal with the O&M (operations and maintenance) side of the Flood Control District’s operations.

Ellis Wants Maintenance Tied to “Equity” Scheme

Rodney Ellis: Second.  It also brings to my mind the question of, “How much of the flood bond money was spent before we adopted the equity guidelines?” 

Harris County Precinct One Commissioner Rodney Ellis

Matt Zeve (Deputy Exec Director, HCFCD): Yes, sir, Commissioner. My staff and I are working on getting those numbers over to you by the end of the week, plus all the other questions that you asked us to dig into. We plan to have that over to you before the end of the week.

Rodney Ellis: And Commissioner (Garcia), I only ask because it relates to the issue. Let’s say if a half a billion, five hundred million was spent before we adopted equity guidelines, I know the city is trying to get us to do some swap. They don’t have equity guidelines as it relates to that … some other project in another county … and I’m going to propose that they give us a recommendation or I’ll come up with one so that we make up a project that will fund it in the absence of equity guidelines, possibly in an equitable way. And money was taken off the top while we were coming up with guidelines, and I want to compensate for that going forward. And that ties in with what you’re doing today.

Hidalgo: So there’s a motion and a second… 

Cagle Objects Because Motion Isn’t in Writing

Cagle: Was it sent around, Judge? (Meaning, “Was the motion circulated so that commissioners could see in writing what they were voting for?”)

Adrian Garcia: It’s coming around now, Commissioner.

Cagle: I’ll hold off until I see it. 

Hidalgo: We can circle back (before taking a vote).

One Hour Later, Motion Passes

Approximately an hour later, at time code 5:23:50, Hidalgo finally circles back to Garcia’s motion.

Commissioner Jack Cagle asks Commissioner Garcia if he discussed his motion with the leaders of the flood control district. Answer: “Some of it.”

Cagle then states, “It’s asking for an assessment. I don’t have an issue with that.”

Commissioner Radack asks whether it could be implemented without coming back to court.

Robert Soard, speaking for the County Attorney’s office, says that any action on the survey would have to come back through Commissioner’s Court for a vote.

Garcia restates the motion, but this time the wording differs slightly: To direct the Harris County Flood Control District to perform a customer satisfaction survey for deferred maintenance and services (i.e. mowing, desilting, etc.) to develop the maintenance cycle and overall maintenance budget needs, to develop an overall condition assessment for the Infrastructure and based on the risk of failure and risk of potential flooding, HCFCD should develop a prioritization criteria and maintenance needs budget and to take a comprehensive look at the condition of all existing infrastructure and identify maintenance need that has been deferred for years due to budgetary or any other reason. There are many areas where repair work can be significantly large that may also qualify for a Capital Project and Budget Management Department need to evaluate if we can fund these through a Bond Program.

Ellis seconds it again. The motion passes.

Text of Flood Bond That Voters Passed

The words “maintenance” and “operations” appear nowhere in the bond language approved by voters.

Under Texas law, bond funds from the 2018 referendum can only be used for purposes approved by the voters.

However, as Commissioner Garcia alludes to in the final sentence of his motion, some maintenance projects are so large that they could legitimately be characterized as capital projects. In fact, the 2018 Flood Bond contained three such projects:

  • F-53 $40 million for “Rehabilitation of Channels Upstream of Addicks Reservoir to Restore Channel Conveyance Capacity”
  • F-52 $20 million for “Rehabilitation of Approximately 20 Miles of Channels Upstream of Barker Reservoir to Restore Channel Conveyance Capacity”
  • CI-012 $60 million for “Major Maintenance of Cypress Creek and Tributaries”

Before the 2018 Bond Election, Harris County Flood Control had only a $120 million budget for maintenance, half of which it spent on capital projects. So you can see that those three maintenance projects would have consumed the entire annual maintenance budget by themselves. Clearly, they fall into a gray area.

The three projects above fall under language in the flood bond that allows “channel improvements.” Also HCFCD publicized them as potential projects before the vote.

Is It Wise to Pay for Maintenance With Bond Money?

Ordinarily, it’s a bad idea to pay for maintenance out of 30-year bond funds.

Mr. Garcia’s introduction of the motion mentioned things not in the motion. For instance:

  • Vehicles
  • Software
  • Customer service

The County should never, in my opinion, pay for those with a 30-year bond. Neither should the bond pay for mowing, which WAS in the motion.

It’s literally like taking out a mortgage to cut your grass. A week later, you’re back where you started and saddled with 30 years of debt.

A New Bond?

Above, I bolded “THE BOND” and “A BOND.” At first, Commissioner Garcia said he wanted to use money from THE BOND (meaning the 2018) bond to pay for some maintenance items. But his actual motion refers to “A BOND.”

That’s certainly a strange way to refer to the historic flood bond passed in 2018. It sounds as though he’s laying the groundwork to float another flood bond.

Rodney Ellis’ rush to second the motion supports the second interpretation. For months, Ellis has consistently carped that there won’t be enough money in the 2018 bond to do all the projects that need doing.

Ellis, Equity Flap and Elm Grove

That’s why Commissioner Ellis redefined “equity” earlier this year. The 2018 Flood Bond specified “equitable distribution of funds.” 88% of people throughout the county voted for that language – thinking they would get their fair share of flood bond money. However, Commissioner Ellis redefined the word to favor the socially vulnerable and penalize others.

Now, Ellis seems to be linking help for Elm Grove to the City of Houston’s adoption of “equity guidelines” comparable to his. He said, “I’m going to propose that they give us a recommendation or I’ll come up with one…” Then he added, “That (meaning equity) ties into what we’re doing here today.” Literally, they are conducting an inventory of maintenance needs and developing a prioritization framework for it.

That framework will no doubt be used to ensure distribution of maintenance dollars according to Mr. Ellis’ definition of equity.

Posted by Bob Rehak on 11/3/2020

1162 Days since Hurricane Harvey

Hurricane Eta Now Predicted to Re-emerge over NW Caribbean

The Monday 10am update from the National Hurricane Center (NHC) on Hurricane Eta now predicts the storm will slam Central America then re-emerge into the Caribbean over the Bay of Honduras in the NW Caribbean.

Beyond 96 hours (Saturday), it’s uncertain what the storm will do.

NHC Predicts Cat 4

Eta has become an impressive November hurricane as it continues to undergo rapid strengthening. Low vertical wind shear and warm sea surface temperatures ahead of Eta are expected to allow for continued rapid strengthening during the next 12 to 24 hours. The updated NHC = forecast now calls for Eta to become a category 4 hurricane before it nears the coast of Nicaragua. After landfall, Eta should quickly weaken while it moves over the mountainous terrain of Central America.

Although Eta’s low-level center may not survive after being inland over Central America for so long, most of the global models depict a cyclone over the northwestern Caribbean Sea later this week and into the weekend which appears to develop from at least a part of Eta’s remnants, and the new NHC track forecast shows the system emerging over the northwest Caribbean Sea after 96 h.

However, the uncertainty in the long-range portion of the forecast remains quite high.

Key Messages

  1. Eta is forecast to strengthen to a major hurricane very soon, and additional strengthening is likely before it reaches the northeastern coast of Nicaragua on Tuesday. Catastrophic wind damage is expected where Etas eyewall moves onshore, and preparations should be rushed to completion within the Hurricane Warning area.
  2. Through Friday evening, heavy rainfall from Eta will likely lead to catastrophic, life-threatening flash flooding and river flooding across portions of Central America, along with landslides in areas of higher terrain. Flash and river flooding is also possible across Jamaica, southeast Mexico, El Salvador, southern Haiti, and the Cayman Islands.
  3. A potentially catastrophic and life-threatening storm surge, along with battering waves, is expected along portions of the northeastern coast of Nicaragua near and to the north of where the center makes landfall. Water levels could reach as high as 12 to 18 feet above normal tide levels in some parts of the hurricane warning area. Preparations to protect life and property should be rushed to completion.

Posted by Bob Rehak on 11/2/2020

1161 Days since Hurricane Harvey