TXP Environmental Acquires Diamond Back's West Texas Landfill

Houston, Texas, January 26^th 2026 – TXP Environmental (“TXP”) today announced the acquisition of Diamond Back Recycling and Sanitary Landfill (“Diamond Back”) of Odessa, Texas. This strategic acquisition cements TXP as a leading, vertically integrated platform throughout the state of Texas. Terms of the transaction were not disclosed.

Diamond Back Solid Waste Facility and Recycling Center first began accepting volume in 2025 and quickly scaled to one of the larger disposal outlets in the region. Prior to acquisition, the landfill was owned and operated by Michael Valenzuela, who in August of 2024 also sold Basin Disposal to TXP. Valenzuela commented “We are happy to have partnered with TXP Environmental again. They have been great partners, and I am excited to see Chuck, Ray and the entire TXP team continue to grow Diamond Back going forward.”

Chuck Casalinova, CEO and Board Chair of TXP Environmental commented “We are excited to have Diamond Back as part of the TXP platform and to have partnered with Michael again. This will further bolster our operations in the West Texas region and make us one of the few vertically integrated, privately held waste companies in the state of Texas.” TXP COO Ray Lewis added, “Diamond Back represents a unique opportunity for TXP to expand our service offerings and presence in the region. We are grateful for the opportunity and appreciate our investors support.”

The landfill represents a significant growth opportunity for TXP as it continues to ramp volume in the coming years. The purchase of the landfill allows TXP to realize operational synergies and internalize a critical part of the waste value chain. The facility is permitted to accept both Type 1 (MSW) and Type IV (C&D) volumes, making it the disposal site of choice for local haulers. Diamond Back represents the fifth acquisition to date for TXP under the ownership of NMS Capital.

Alongside the transaction TXP executed a new secured credit facility with Stonepeak Credit. TXP CFO Joe Scarano commented, “In addition to supporting the acquisition of Diamond Back, our new credit facility provides fresh capital to support organic growth initiatives across the state and additional strategic acquisitions.” David Xia, Managing Director with Stonepeak, commented, “We are thrilled to partner with NMS Capital and TXP to support future growth of their leading, regional waste platform.”

Stifel served as the exclusive financial advisor to TXP and NMS on both the acquisition and related debt financing.

About TXP Environmental:

TXP Environmental is the parent company for Texas Pride Disposal, West Texas Dumpsters, South Texas Dumpsters, Smooth Move Services, Basin Disposal and Diamond Back landfill. With a full range of residential and commercial waste-collection, recycling, roll-off container, compactor and portable-toilet services, TXP Environmental serves communities and businesses across Texas—from the Greater Houston Area and San Antonio to South Texas, Austin, Hill Country and Midland / Odessa.

Learn more about our new Midland-Odessa Landfill or our other residential and commercial waste collection services or follow us on LinkedIn @TXP-Environmental.

About NMS Capital:

Founded in 2010, NMS Capital is an experienced private equity firm managing assets in excess of $1.7 billion. Since inception, NMS has partnered with management teams in over 150 investments and follow-on acquisitions across defined investment themes within the Business Services and Healthcare Services industries. The firm’s principal strategy is to create long-term value by providing strategic and operational resources to growth-oriented companies led by founders or experienced management teams. NMS has successfully built industry leading lower middle market companies in defensible and scalable end markets by accelerating organic and acquisition-driven growth.

For more information on NMS, please visit the firm’s website at www.nms-capital.com or follow them on LinkedIn @NMS-Capital.

About Stonepeak Credit:

Stonepeak Credit is the credit investing arm of Stonepeak, a leading alternative investment firm specializing in infrastructure and real assets with approximately $80 billion of assets under management. Stonepeak Credit targets credit investments across the transportation and logistics, energy and energy transition, digital infrastructure, and social infrastructure sectors that provide essential services with downside protection, high barriers to entry and visible, recurring revenue generation. It seeks to provide capital solutions that are flexible across the capital structure while generating cash yield through majority senior secured credit investments.

Stonepeak is headquartered in New York with offices in Houston, Washington, D.C., London, Hong Kong, Seoul, Singapore, Sydney, Tokyo, Abu Dhabi, and Riyadh. For more information on Stonepeak, please visit the firm’s website at www.stonepeak.com.