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LarKen Precast, LLC manufactures engineered precast concrete products.  Our septic tanks are approved by the State of Idaho, Dept. of Environmental Quality and by Oregon D.E.Q.  We make special concrete tanks for extended treatment systems, the BioMicrobic ® Fast® systems and the Orenco Systems® AdvanTex® Treatment System.  We manufacture Sand/Oil and Grease Traps/Interceptors, catch basins for storm, wastewater, irrigation and electrical applications. Our designs meet requirements for Uniform Plumbing Code, Idaho Standards for Public Works, ACHD Supplemental, the City of Boise, and other municipalities in our area.  We also manufacture 48-inch diameter manholes, bases, risers, and eccentric cones.  We build custom concrete products ranging from wing walls to box culverts to small precast buildings.

We assemble components for on-site pump systems and lift stations. We also offer a large number of quality wastewater related products including but not limited to Goulds Pumps,

Orenco® Systems products, Hancor/ADS pipe, Polylok™ and Tuf-Tite® polyethylene products, ADS Arc 36™ and gravelless domes, geotextiles, most common pipe and fittings for the wastewater industry. We strive to “Buy Idaho™” and “Buy America.”

We batch our own SCC concrete using Portland cement, quality washed sand, aggregates, and Grace water-reducing/plasticiser additives.  Our compression strengths exceed standard specifications.  We use rebar to assure strength in our quality products.  Our Q.C. follows NPCA guidelines and our products are poured within twenty minutes after mix.  We reclaim all of our wash water and endeavor to reclaim, recycle and reuse other aggregates and recyclables.

We deliver our products to southwest and central Idaho and eastern Oregon.  Delivery includes setting in most instances. Our products have even been shipped to Hawaii.

We assemble components for on-site pump systems and lift stations. We also offer a large number of quality wastewater related products including but not limited to Goulds Pumps,