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HILLIARD, Ohio – April 28, 2008: Advanced Drainage Systems, Inc. (ADS) is excited to announce an addition to their current family of N-12 pipe products. This next generation of pipe named N-12 HP (High Performance) is anticipated to create a revolution within the drainage industry generating a significant paradigm shift on the products that are currently offered. N-12 HP's unique engineered structure will allow greater opportunities for the product to be specified on more storm, sanitary and high performance project applications.

N-12 HP will be commercially available through the company's nationwide distribution network in early 2009. ADS is announcing this today so that the organization's Engineering Sales force has sufficient time to educate the nation's leading specifying design engineers of the broader capabilities this new product has to offer.

"One might think because ADS has enjoyed tremous acceptance of our existing products, we may be tempted to rest on our laurels. This is not the case and not our reality. ADS is constantly looking for innovative ways to improve our product offering," Joe Chlapaty, Chairman and Chief Executive Officer of ADS said. "Our significant investment in the development of this patented N-12 HP product line is a great example of ADS' commitment to our industry. As with all ADS products, N-12 HP offers a high quality, value enhanced solution providing significant installed cost savings for our customers. N-12 HP will advance the industry as we know it today."

This innovative new product couples the most advanced resin technology with highly engineered profile designs, resulting in a product with significantly greater pipe stiffness, beam strength and enhanced service life performance. N-12 HP is manufactured utilizing a unique light grey resin color to enhance post installation inspection.

N-12 HP's highly engineered triple-wall construction far surpasses any other products currently being offered today. The product's smooth exterior wall design supported by a corrugated structural core provides for improved stiffness and greater beam strength to minimize deflection, shed point load while also providing enhanced jobsite durability and easier backfill installation. In fact, the backfill requirements for N-12 HP are less stringent than those currently required with traditional products.

N-12 HP's smooth interior wall incorporates a dual banded, exted bell and a spigot with two gaskets for added safety. Product will be available in diameters up to 60" (1500mm). Its standard length will be 20' (6.096m), with shorter lengths available for trench box, deep burial installations.

Efforts are now underway to obtain the appropriate ASTM and AASHTO specifications. N-12 HP will be specified through a new ASTM standard currently under development.


About Advanced Drainage Systems, Inc.
Advanced Drainage Systems, Inc. (ADS) is the world's largest producer of HDPE corrugated plastic pipe. Founded in 1966, it serves the storm water drainage and on-site industry through a global network of 42 domestic and international manufacturing plants and more than 30 distribution centers. In addition to its flagship N-12 pipe, the company offers a complete line of fittings and other accessories including StormTech® storm water chambers, Nyloplast® drainage structures and various geotextiles.

For more information, please contact:
Ms. Tori L. Durliat
Corporate Manager of Marketing and Communications, ADS
Phone: 1-800-537-9520