Product Data & Information All our concrete is constructed with rebar reinforcement, and reaches a minimum compressive strength of... Learn More Services Customization Molds can be modified to match site needs. Inventory can be cut, core drilled, or patched according to your needs. Learn More Delivery and Placement When digging the hole, dig about 36” longer and wider than dimensions of the tank. Learn More WANT TO KNOW MORE ABOUT US ? M-1 Tanks serves Grant county Washington and surrounding counties. We specialize in septic systems. We are not designers nor installers. We do carry an inventory of complete septic system parts including drain field supplies. The purpose of this site is to be used as a guide with charts, graphs, performance curves, dimensions, and product lists. Feel free to contact our staff professionals for expert advice! SUPPLYING CONCRETE PRODUCTS TO THE NORTHWEST SINCE 1984 M-1 Tanks - SINCE 1984 m1productions@yahoo.com See On Maps Call for a quote! 509-766-2914 Home ABOUT SERVICES PRODUCTS CONTACT HAVE A PROJECT WITH US? FEEL FREE Monday to Friday: 7:00 - 4:00 // Saturday/Sunday: Closed Follow us on social media Copyright © 2019 M1 Tanks We specialize in septic systems. We are not designers nor installers. We do carry an inventory of complete septic system parts including drain field supplies. ABOUT About Services Waste Water Products Concrete Products Contact MENU phone: 509 766 2914 fax 509- 764 0905 m1productions@yahoo.com 13058 N Frontage rd E Moses Lake, WA 98837 CONTACT