Jeff Lindner, Director of Hydrologic Operations and Division Meterologist for Harris County Flood Control, just issued this warning”
“Multiple rounds of thunderstorms with heavy rainfall and some severe weather likely today into tonight.”
“Large cluster of thunderstorms with heavy rainfall extends from near Sealy to College Station and is moving eastward and will overspread much of the region N of I-10 over the next several hours. A second…powerful…bow echo with 70-80mph is rapidly approaching Corpus Christi and the coastal bend and may impact the Matagorda Bay area later this morning.”
“Active pattern will remain in place as several disturbances and a weak cold front move across the area today and tonight and into Saturday. Rounds of thunderstorms will produce heavy rainfall and isolated severe weather. Main severe threats today will be mainly west of I-45 and some of the storms this morning over south-central TX have shown some weak rotation.”
“Expect the current round of storms to move across the area between now and 1-2pm followed by a brief break and then another…potentially stronger round this evening into the overnight period.”
“Rainfall amounts of 1-3 inches will be possible today into early Saturday with isolated higher totals. In fact some of the higher resolution models are showing isolated amounts up to 4-5 inches under training bands today and tonight. Air mass is certainly moist and will be able to support some 1-2 inch per hour rainfall rates which will lead to street flooding.”
River Forecast
“Area rivers are responding to the recent heavy rainfall and will remain elevated and in flood (Trinity). Additional rains today and tonight and then again next week will only increase rises. The area river and hydro situation is starting to become worrisome given the potential for this pattern to maintain for the next 1-2 weeks.”
Posted by Bob Rehak on April 3, 2019
612 Days since Hurricane Harvey
00adminadmin2019-05-03 09:41:282019-05-03 09:41:53Possible Street Flooding Today
I visited Placement Area 1 this morning . Muck was shooting out of the “diffuser pipe” at 470 cubic yards per hour. That’s enough to fill up 47 dump trucks every hour! A truly impressive sight. So I grabbed my Nikon D5 and started clicking. Only after downloading the images did I realize that I had the shutter set to 1/8000th of a second.
Liquid Looks Like Glass at 1/8000th
Normally, when shooting flowing water, you want to use shutter speeds in the range of 1/8th to 1/60th of a second. Slower speeds blur the liquid and create a sense of motion. The faster speed, however, froze the motion and made the liquid look like glass.
In photography, sometimes mistakes make the shot. This may have been one of those times. As I stared at the effluent, I became transfixed by the thousands of bursting bubbles within it. You can also see how the further the “spray” gets from the pipe, the bursting bubbles begin to reform into smaller droplets.
Effect of Diffusion Pipe
Dredgers call this a diffusion pipe because of those rings on the end of it. They allow the dredger to control the spread of the effluent. By adjusting the spread, they can make it shoot out far like a fire hose or spread out wide.
In this case, they had it set to “wide” so that it would be more controllable.
Diffuser pipe at Placement Area #1 shooting out effluent at 470 cubic yards per minute. Shot with a Nikon D5 at 1/8000th of a second.A slightly wider shot shows sand piling up. All the water in the effluent finds its way back into the river after sediment drops out of suspension and it is filtered by gravity.This shot shows three separate activities: a) the pit being filled, b) an excavator moving sand out of the flow, and c) loading a sand truck which will haul it away.
Now Selling Sand from Placement Area #1
A worker told me that early last week, the pit owner started selling sand from the site to an asphalt company. At the present rate, they are hauling it away about half as fast as the pit is being filled. This will help create extra storage area in the pit should the US Army Corps of Engineers choose to use it for the next phase of dredging – the mouth bar.
Max Flow Rates
As impressive as this flow is, I’m told it can go even higher – up to about 1,000 cubic yards per hour. The rate depends on factors such as the density and hardness of the spoils, as well as the distance they are pumped.
Details Still Being Worked Out on Mouth Bar
Still no official word yet on details of Phase 2 – the mouth bar project. The Corps is still evaluating placement areas. It could be that they need to permit more than one to contain the entire mouth bar. However, they also need to move quickly to make sure the dredgers don’t move on to another job.
Because of the lengthy amount of time permitting a placement area can take, the Corps may try to buy time by directing spoils to one or both of the current placement areas which are already permitted.
The more sand that pit owners can sell, the more capacity they will have, and the faster phase two of West Fork dredging can start.
FEMA will not pay to remove the entire mouth bar. FEMA has been working with the Corps and the City of Houston to determine how much of the mouth bar was due to Harvey. By statute, that’s all FEMA can pay to remove.
Variables Complicate Decisions
The City, State and Harris County will have to pay to remove the rest. That’s part of the contingency planning at this point. No details have yet been released about how all the pieces of this jigsaw puzzle will fit together.
Planners are now trying to optimize for at least ten variables that I have heard discussed.
Volume due to Harvey
Time required to dredge it
Available storage in existing placement areas
Additional cost to move it to those placement areas (pipe, booster pumps, fuel, etc.)
Productivity loss due to additional distance from mouth bar
Cost versus amount funded by FEMA
Placement areas and cost for any volume FEMA does not fund
Time required to permit new placement area(s)
Where money will come from to cover what FEMA does not cover
When additional funds will be available
Not simple! We can only wish that they could make the decision in 1/8000th of a second.
Posted by Bob Rehak on 5/2/2019
611 Days since Hurricane Harvey
https://i0.wp.com/reduceflooding.com/wp-content/uploads/2019/05/PA1-5.2.19-CU_01.jpg?fit=1500%2C1007&ssl=110071500adminadmin2019-05-02 16:44:452019-05-02 16:47:37What 470 Cubic Yards of Muck Per Hour Looks Like at 1/8000th of a Second
The Texas Commission on Environmental Quality’s (TCEQ’s) letter to the Corps expresses eight pages of concerns. Keep in mind that it was dated March 1. So the developer had it for TWO MONTHS. Also remember! TCEQ was reviewing ONLY water-quality issues posed by the development.
For everyone else, I have summarized the main concerns below.
Title 30, Texas Administrative Code (TAC), Chapter 279.ll(c)(l), states that “No discharge shall be certified if there is a practicable alternative to the proposed discharge which would have less adverse impact on the aquatic ecosystem, … ” “Please have the applicant clarify the purpose and need for the project, as portions of the proposed project are not aquatic-dependent.”
From the public notice, the applicant states that “they have avoided and minimized environmental impacts by configuring the location of the proposed structures and reducing the size of the lakes within each district.” “This statement does not detail how and where wetland and stream impacts were avoided or minimized. Please have the applicant explain how and where impacts to stream and wetland resources were minimized and avoided.”
“The applicant proposes to develop a mitigation site or purchase credits but says nothing more…The compensatory mitigation plan must include the objectives, site selection, the site protection instrument, baseline information, how the compensatory mitigation will provide required compensation for unavoidable impacts to aquatic resources, a mitigation work plan, maintenance plan, ecological performance standards, monitoring requirements, long-term management plan, adaptive management plan, financial assurances, and other information per the mitigation rule requirements.”
“During the site visit, the resource agencies and the applicant’s representative noticed several streams that were not accounted for in the impacts tables. Please have the applicant incorporate the additional streams and revise the total amount of project impacts accordingly.”
“There are several impacts within the commercial district that appear to be unaccounted for or are unidentified. Please have the applicant revise the impacts table to account for all resources that will be converted.”
“Please have the applicant determine if project specific locations (PSLs) such as borrow, stockpiling, staging, and equipment parking areas associated with the project will impact wetlands. These PSL impacts should be included in the accounting of total project impacts.”
“Several wetlands within the proposed project boundary will be hydrologically disconnected from the current floodplain. Please have the applicant revise the impacts tables to include wetland and stream resources that will be affected secondarily by the proposed project and address the cumulative effect of each district on the interconnectedness of the onsite wetlands.”
“Please have the applicant explain in detail what measures will be taken to avoid groundwater and surface water contamination from construction activities.”
“Please have the applicant provide a hydraulic analysis of the site to account for current site conditions, projected increased impervious surface runoff, as well as drainage patterns for the site, and describe how water quality on and off the project site will be protected from impacts such as erosion.”
“Stormwater drainage from residential and commercial lots should be routed away from the West Fork San Jacinto River, the marina, and stream resources onsite. Stormwater should be redirected and routed to stormwater treatment features before entering the aforementioned resources. Please have the applicant provide details on how the replacement of lost onsite water quality functions will be addressed.”
Other Issues Outlined in Letter
How an expanded Woodland Hills Drive would affect stream crossings
The purpose and design of the so-called “water-quality ponds”
The design of channels and marinas; their connectivity to the San Jacinto; and their impact on water quality
The impact of boat channels on water-oxygen levels
Channels that cross wetland habitat
Box culverts instead of bridges
Channel widths (100-foot wide for a channel 4-feet deep)
Channels crossing property Romerica doesn’t own
Slope of channels
Diversion of stormwater from roads and parking lots away from channels
Dead-end channels
How domestic wastewater will be collected and treated
Dissolved oxygen monitoring and reporting
Applicants characterization of stream types (intermittent vs. perennial); requests “an accurate assessment.”
Conservation easements on the property. (21.90 acres of wetlands are covered by a conservation easement located within the residential and commercial portions of the proposed development. “Please have the applicant verify that the conservation easement will be protected from potential development and ensure the preserved wetlands will not be impacted, directly or indirectly, from the construction of the proposed project.”
Start Over?
There may be no good answers to some of these questions and concerns. SWCA, CivilTech and Romerica must be re-evaluating the impact of these questions on the economics of their project.
This isn’t the type of stuff you need another week to figure out. These questions will make the developers rethink their commitment to the entire project.
Finding answers will likely involve a redesign of the project and that could cost more than the land itself.
Keep in mind that water quality was just one of 20 different areas that the Corps is evaluating.
TCEQ Didn’t Have Enough Info to Make Decision
I asked Peter Schaefer, a team leader within the TCEQ Water Quality Assessment Section, whether the TCEQ had made a recommendation to the Corps on this project. He said “No.”
The reason: “Because TCEQ did not receive a response to our comment letter, and the applicant had not begun the process of working with us and the Corps to address the concerns raised in the letter, TCEQ was not in a position to make a decision on the project,” said Schaeffer. Hence the detailed requests for more information.
Schaefer added, “A typical 404/401 permitting process would normally take several months, if not a year or more, for the applicant to address comments from TCEQ, Corps, resource agencies, and the public. Because of the magnitude and nature of this project, it would likely have required much more time, coordination, discussion, project revision(s), and perhaps additional public notice(s) to get to the point where the Corps was prepared to complete a Decision Document.”
Posted by Bob Rehak on 5/1/2019
610 Days since Hurricane Harvey
https://i0.wp.com/reduceflooding.com/wp-content/uploads/2018/12/Pieces-of-Romerica-Dev-e1546040851855.png?fit=1500%2C1095&ssl=110951500adminadmin2019-04-30 23:55:582019-05-01 00:04:00TCEQ Lists Water-Quality Concerns About Romerica High-Rise Permit
Possible Street Flooding Today
Jeff Lindner, Director of Hydrologic Operations and Division Meterologist for Harris County Flood Control, just issued this warning”
“Multiple rounds of thunderstorms with heavy rainfall and some severe weather likely today into tonight.”
“Large cluster of thunderstorms with heavy rainfall extends from near Sealy to College Station and is moving eastward and will overspread much of the region N of I-10 over the next several hours. A second…powerful…bow echo with 70-80mph is rapidly approaching Corpus Christi and the coastal bend and may impact the Matagorda Bay area later this morning.”
“Active pattern will remain in place as several disturbances and a weak cold front move across the area today and tonight and into Saturday. Rounds of thunderstorms will produce heavy rainfall and isolated severe weather. Main severe threats today will be mainly west of I-45 and some of the storms this morning over south-central TX have shown some weak rotation.”
“Expect the current round of storms to move across the area between now and 1-2pm followed by a brief break and then another…potentially stronger round this evening into the overnight period.”
River Forecast
“Area rivers are responding to the recent heavy rainfall and will remain elevated and in flood (Trinity). Additional rains today and tonight and then again next week will only increase rises. The area river and hydro situation is starting to become worrisome given the potential for this pattern to maintain for the next 1-2 weeks.”
Posted by Bob Rehak on April 3, 2019
612 Days since Hurricane Harvey
What 470 Cubic Yards of Muck Per Hour Looks Like at 1/8000th of a Second
I visited Placement Area 1 this morning . Muck was shooting out of the “diffuser pipe” at 470 cubic yards per hour. That’s enough to fill up 47 dump trucks every hour! A truly impressive sight. So I grabbed my Nikon D5 and started clicking. Only after downloading the images did I realize that I had the shutter set to 1/8000th of a second.
Liquid Looks Like Glass at 1/8000th
Normally, when shooting flowing water, you want to use shutter speeds in the range of 1/8th to 1/60th of a second. Slower speeds blur the liquid and create a sense of motion. The faster speed, however, froze the motion and made the liquid look like glass.
In photography, sometimes mistakes make the shot. This may have been one of those times. As I stared at the effluent, I became transfixed by the thousands of bursting bubbles within it. You can also see how the further the “spray” gets from the pipe, the bursting bubbles begin to reform into smaller droplets.
Effect of Diffusion Pipe
Dredgers call this a diffusion pipe because of those rings on the end of it. They allow the dredger to control the spread of the effluent. By adjusting the spread, they can make it shoot out far like a fire hose or spread out wide.
In this case, they had it set to “wide” so that it would be more controllable.
Now Selling Sand from Placement Area #1
A worker told me that early last week, the pit owner started selling sand from the site to an asphalt company. At the present rate, they are hauling it away about half as fast as the pit is being filled. This will help create extra storage area in the pit should the US Army Corps of Engineers choose to use it for the next phase of dredging – the mouth bar.
Max Flow Rates
As impressive as this flow is, I’m told it can go even higher – up to about 1,000 cubic yards per hour. The rate depends on factors such as the density and hardness of the spoils, as well as the distance they are pumped.
Details Still Being Worked Out on Mouth Bar
Still no official word yet on details of Phase 2 – the mouth bar project. The Corps is still evaluating placement areas. It could be that they need to permit more than one to contain the entire mouth bar. However, they also need to move quickly to make sure the dredgers don’t move on to another job.
Because of the lengthy amount of time permitting a placement area can take, the Corps may try to buy time by directing spoils to one or both of the current placement areas which are already permitted.
The more sand that pit owners can sell, the more capacity they will have, and the faster phase two of West Fork dredging can start.
FEMA will not pay to remove the entire mouth bar. FEMA has been working with the Corps and the City of Houston to determine how much of the mouth bar was due to Harvey. By statute, that’s all FEMA can pay to remove.
Variables Complicate Decisions
The City, State and Harris County will have to pay to remove the rest. That’s part of the contingency planning at this point. No details have yet been released about how all the pieces of this jigsaw puzzle will fit together.
Planners are now trying to optimize for at least ten variables that I have heard discussed.
Not simple! We can only wish that they could make the decision in 1/8000th of a second.
Posted by Bob Rehak on 5/2/2019
611 Days since Hurricane Harvey
TCEQ Lists Water-Quality Concerns About Romerica High-Rise Permit
Last week, SWCA, Romerica’s environmental consultant, requested more time to respond to concerns about the proposed high-rise development in Kingwood. On April 30, the Corps withdrew Romerica’s permit application. The Corps suggested that Romerica resubmit a new application once they worked out issues with the first submittal.
Eight Pages of Concerns
All along, Kingwood residents have expressed skepticism about the suitability of this project for the Kingwood location. Turns out the 727 residents and groups that submitted protest letters weren’t the only ones with questions.
The Texas Commission on Environmental Quality’s (TCEQ’s) letter to the Corps expresses eight pages of concerns. Keep in mind that it was dated March 1. So the developer had it for TWO MONTHS. Also remember! TCEQ was reviewing ONLY water-quality issues posed by the development.
Full Text of Letter
Reading the TCEQ letter makes one realize how deficient the original application must have been. Here is the complete text for those who want all the detail.
Summary of Key Points
For everyone else, I have summarized the main concerns below.
Other Issues Outlined in Letter
Start Over?
There may be no good answers to some of these questions and concerns. SWCA, CivilTech and Romerica must be re-evaluating the impact of these questions on the economics of their project.
This isn’t the type of stuff you need another week to figure out. These questions will make the developers rethink their commitment to the entire project.
Finding answers will likely involve a redesign of the project and that could cost more than the land itself.
TCEQ Didn’t Have Enough Info to Make Decision
I asked Peter Schaefer, a team leader within the TCEQ Water Quality Assessment Section, whether the TCEQ had made a recommendation to the Corps on this project. He said “No.”
The reason: “Because TCEQ did not receive a response to our comment letter, and the applicant had not begun the process of working with us and the Corps to address the concerns raised in the letter, TCEQ was not in a position to make a decision on the project,” said Schaeffer. Hence the detailed requests for more information.
Schaefer added, “A typical 404/401 permitting process would normally take several months, if not a year or more, for the applicant to address comments from TCEQ, Corps, resource agencies, and the public. Because of the magnitude and nature of this project, it would likely have required much more time, coordination, discussion, project revision(s), and perhaps additional public notice(s) to get to the point where the Corps was prepared to complete a Decision Document.”
Posted by Bob Rehak on 5/1/2019
610 Days since Hurricane Harvey