There are no environmental showstoppers in SpaceX’s plans to launch a giant new rocket to orbit from South Texas, the Federal Aviation Administration said on Monday.
An environmental assessment by the agency has concluded that SpaceX’s plans for orbital launches will have “no significant impact” on the region along the Gulf Coast near Brownsville, Texas. But the F.A.A. is also requiring the company to undertake more than 75 actions to minimize the impact on the surrounding areas as it begins flights of Starship, a vehicle that is central to NASA’s plans to return to the moon as well as the vision of Elon Musk, the company’s founder and chief executive, to colonize Mars.
The actions Mr. Musk’s company must take include earlier notice of launches, monitoring of vegetation and wildlife by a biologist, coordination with state and federal agencies to remove launch debris from sensitive habitats and adjustment of lighting to lessen impact on wildlife and a nearby beach.
The mitigation measures required by the F.A.A. also restrict closures of a highway that passes the SpaceX site during launches so that people can visit the nearby beach, park and wildlife refuge. The agency said the highway could not be closed on 18 holidays and not on more than five weekends a year.
The decision means that a more comprehensive environmental impact statement, which would have likely added years to the project, is not needed. That decision frustrated some members of the community.
“For them to say there is no significant impact is ludicrous,” said Jim Chapman, a board member of Save RGV, a nonprofit environmental advocacy group aiming to protect the Rio Grande Valley. “The impacts are simply too large. We still feel that way. The F.A.A. should have recognized that.”
Mr. Chapman said he hoped his group would be able to file a lawsuit to force the more comprehensive environmental review. And SpaceX still needs to obtain a license from the F.A.A. for launches.
SpaceX’s site is in a tiny village called Boca Chica, which the company has taken to calling Starbase.
There, for several years, SpaceX has been working on Starship, a stainless steel behemoth that would be the most powerful rocket ever. Together with a booster stage, it will stand nearly 400 feet high, taller than the Statue of Liberty and its pedestal.
It will also, unlike any previous orbital rocket, be entirely reusable. That has the potential for greatly cutting the cost of sending payloads to orbit — less than $10 million to take 100 tons to space, Mr. Musk has said.
The Boca Chica site offers several factors that make it a favorable place to launch rockets to orbit. Except for the bottom of the Florida peninsula, it is as far south as one can get on the continental United States. For many missions, a launchpad closer to the Equator aids the trip to orbit by adding the speed of Earth’s rotation to the rocket’s velocity.
The launch path passes over water, away from populated areas, minimizing risk to people on the ground.
But other creatures live in the surrounding wetlands, including ocelots and Kemp’s ridley sea turtles, both of which are endangered. State Highway 4, which runs next to the SpaceX site, also passes through Boca Chica Beach, Texas State Parks and the Lower Rio Grande National Wildlife Refuge. Environmentalists worry a steady cadence of Starship launches with blasts of thunderous noise and rocket exhaust as well as potential explosive mishaps will disrupt the ecosystem.
Among SpaceX’s plans for Boca Chica that will affect the environment: installing a solar power farm; building parking lots; constructing processing facilities that the cargo Starship will carry; and conducting more test flights, which raise the likelihood of additional testing explosions that can send debris and forceful shock waves for miles.
The site has also created an economic debate. Many officials and residents welcome the influx of money and prestige that SpaceX is bringing to the Brownsville area, where about a third of the people live below the poverty line. But others worry that gentrification will push out longtime residents.
In 2014, the F.A.A. gave SpaceX environmental clearance to conduct testing and launching of its smaller Falcon 9. In the last couple of years, the Falcon 9 has become the most frequently launched rocket on the planet. But SpaceX never launched any from Boca Chica, instead using its other sites in California and Florida.
And Starship is far bigger than the Falcon 9 — a spacecraft stacked on top of giant booster called the Super Heavy — with greater impacts on the surrounding areas.
Thus, the F.A.A. required a new environmental assessment before SpaceX could try a launch of Starship to orbit. During the first orbital test flight, the Super Heavy booster would attempt a controlled landing in the Gulf of Mexico, while the Starship stage would try to set down in the Pacific Ocean off Hawaii after flying to orbit.
The agency published a draft of the document in September that suggested no major hurdles that would require SpaceX to put together a full-fledged environmental impact statement. It planned to release a final version at the end of December but pushed back the date several times, citing the need to consider 18,000 comments on the preliminary document.
In an update on the Starship program in February, Mr. Musk said he was hopeful the F.A.A. would soon give SpaceX a green light to proceed. “We have gotten sort of a rough indication that there may be an approval in March,” Mr. Musk said.
That did not occur, but Mr. Musk at the time said an orbital launch attempt could occur “a couple of months” after approval. The company has yet to announce an updated launch schedule based on Monday’s decision.
SpaceX intends to also launch Starships from NASA’s Kennedy Space Center in Florida.
In addition to the eventual trips to Mars, Starship is to be used by NASA to ferry astronauts from orbit around the moon to its surface. The company won a $2.9 billion contract for the mission, outcompeting two other bidders: Blue Origin, the rocket company founded by Jeff Bezos of Amazon, and the defense contractor Dynetics. The moon landing is scheduled, on paper, for 2025, but it is expected to be delayed. In addition to work on Starship, the return of astronauts to the moon requires the Space Launch System, another large rocket under development by NASA that is also behind schedule.
