About 8,000 pounds of cement dust released due to faulty equipment at McKinney plant, report states

Approximately 8,000 pounds of particulate matter was released in McKinney on July 19.

Approximately 8,000 pounds of particulate matter was released in McKinney on July 19.

An estimated 8,000 pounds of cement dust was released in McKinney over several hours last month due to an equipment malfunction at an industrial plant, according to an incident report filed with state regulators.

That amount of cement dust, which blanketed a nearby residential neighborhood, is the equivalent of 160 50-pound bags of cement.

The Martin Marietta plant filed an air emission event report about the July 19 incident with the Texas Commission on Environmental Quality. That agency regulates particulate matter for the plant located along SH 5.

According to the Aug. 2 report, the cement dust was released between 1:30 a.m. and 6:45 a.m. after "an automatic shutdown system for one of the cement silos at the McKinney plant failed to operate correctly to shut down a blower motor. The result was that the system continued to fill a silo with cement beyond the capacity of the silo."

The report stated that a pressure release valve activated, causing the cement dust to be released. No one was working at the plant at the time, so the release continued until the system was manually shut off, according to the report.

A separate report from the city of McKinney said the fire department was dispatched at 11:39 p.m. on July 18 to one of the facilities on SH 5.

"No fire was found but [the fire department] observed a cloud of dirt and dust being emitted from some equipment on site," according to the city's report.

Amanda Miller, director of Government Affairs and Public Relations for Martin Marietta, said the dust event began at 8:17 p.m. on July 18. The system was was shut off approximately five hours later, around 1:30 a.m. on July 19, after an employee driving by saw the dust coming from the silo.  

Operations at Martin Marietta's McKinney plant ceased July 19 and remains closed as of Aug. 9.

"The plant will not be operated again until it is tested by a third party and shown to be operating correctly in terms of all of its systems and in compliance with its permit," according to the report.

Much of the concrete dust fell on the McKinney Greens neighborhood located across the highway from the plant. Dust and noise from Martin Marietta and two other industrial plants along SH 5 have been a concern for residents in the area for years. But never before has it been this bad, residents say.

“We’ve never been impacted with an episode that has tracked like this,” McKinney Greens resident Dotti Stevens said in a previous interview with Community Impact Newspaper.

After the cement dust release, the plant sent crews to help clean up homes, cars and other affected areas in the neighborhood. According to an email from the TCEQ, no long-term concerns are expected once the dust is removed.

As of Aug. 8, Martin Marietta has worked with 138 residents to clean their property, said Miller. Cleanup efforts include interior, exterior, street, swimming pool and duct cleaning services, in addition to car wash services.

Cleanup efforts will continue and property owners seeking assistance with cleanup should contact Martin Marietta at 972-647-3300 or mckinney@martinmarietta.com, according to the city of McKinney.

Editor's note: Additional information has been added to this article.
By Cassidy Ritter
Cassidy graduated from the University of Kansas in 2016 with a degree in Journalism and a double minor in business and global studies. She has worked as a reporter and editor for publications in Kansas, Colorado and Australia. She was hired as senior reporter for Community Impact Newspaper's Plano edition in August 2016. Less than a year later, she took the role of editor for the McKinney edition.


Texas Commissioner of Education Mike Morath announced in a June 30 State Board of Education meeting that students will be taking the STAAR in the 2020-21 school year. (Courtesy Pixabay)
Education organizations call for STAAR requirements to be waived another year

Gov. Greg Abbott waived the State of Texas Assessments of Academic Readiness, or STAAR, testing requirements in March of earlier this year in response to the coronavirus pandemic.

With a clinical background in internal, pulmonary and critical care medicine, Corry has been with BCM for 20 years. He now focuses primarily on inflammatory lung diseases, such as asthma and smoking-related chronic obstructive pulmonary diseases. (Graphic by Ronald Winters/Community Impact Newspaper)
Q&A: Baylor College of Medicine's Dr. David Corry discusses immunity, vaccine production amid COVID-19 pandemic

Rapid development and distribution of a vaccine worldwide and successful achievement of herd immunity will be key players in determining the lifespan of the COVID-19 pandemic, said Dr. David Corry, a professor of Medicine in the Immunology, Allergy and Rheumatology Section at Baylor College of Medicine.

DATA: 2018-2020 McKinney real estate market at a glance

On average, homes in this area are on the market for about two months.

The new partnership will provide on-site, same-day testing and results for assisted-living facility staff and their residents. (Courtesy Adobe Stock)
State announces partnership for increased COVID-19 testing for patients, staff at assisted-living facilities, nursing homes

These test sites will help the state work toward the goal of processing up to 100,000 tests in the first month.

Upcoming McKinney restaurant Black & Horn suspends opening plans

The restaurant was going to offer an upstairs lounge and live music, and provide a mix of Southern and Asian dishes, such as Cajun gumbo and Vietnamese pho, crawfish mac and cheese, and American fare staples.

If an employee tests positive for COVID-19, establishments are encouraged, but not required, to follow Centers for Disease Control and Prevention and state guidelines. (Katherine Borey/Community Impact Newspaper)
Texas restaurants, businesses not required to disclose positive COVID-19 cases

If an employee of a business or restaurant tests positive for COVID-19, establishments are encouraged, but not required, to follow Centers for Disease Control and Prevention and state guidelines.

Effective July 9, hospitals in more than 100 counties across the state must now postpone elective surgeries unrelated to COVID-19. (Courtesy Adobe Stock)
MAP: Governor expands restrictions on elective surgeries to more than 100 Texas counties

Texas Gov. Greg Abbott expanded the restrictions that initially required only hospitals in Bexar, Dallas, Harris, and Travis counties to postpone all non-medically necessary surgeries and procedures that are unrelated to COVID-19.

This marks the second month in a row where the city has reported a year-over-year increase in sales tax revenue. (Community Impact staff)
DATA: McKinney’s sales tax revenue climbs 18% in spite of pandemic

This marks the second month in a row where the city has reported a year-over-year increase in sales tax revenue.

Home improvement: Kangaroo Contractors president in McKinney weighs in on remodeling projects

“I guess [it’s] because people are at home more now, and they’re seeing that their house really needs to be repaired and updated."

Lisha and Martin Marshall recently purchased a home in Trinity Falls in McKinney. (Courtesy Lisha Marshall)
McKinney's housing market rebounds following COVID-19 slowdown

With the coronavirus pandemic at the forefront of buyers’ minds, the people looking for homes are serious shoppers, experts said.

The Frisco Chamber of Commerce will host its State of the City panel discussion online July 14. (William C. Wadsack/Community Impact Newspaper)
Frisco chamber to host State of the City, Crayola Experience reopens in Plano: Business, community news from DFW

Read the latest Community Impact Newspaper coverage of the Dallas-Fort Worth area.

In compliance with Gov. Greg Abbott's July 2 executive order, the University Interscholastic League is requiring the use of facial coverings when practical to do so for all summer activity participants, among other guidelines. (Graphic by Ronald Winters/Community Impact Newspaper)
UIL releases guidelines for conducting summer activities during COVID-19 pandemic

The University Interscholastic League released udpated guidelines for schools conducting summer activities such as sports training and marching band practices on July 8.