The Lindentree Project was completed in the winter of 2004. The site is northeast of Linden and had consisted of many acidic ponds, high walls and exposed gob piles. The restoration project regraded and revegatated the area along with filling in acid pits and using mill slag and limestone channels to raise alkalinity. An existing wetland on the project site was enhanced. This is one of the first sites in Huff Run to make use of steel slag to boost alkalinity. An Ohio EPA 319 grant administered by Crossroads RC&D funded this project. Baker Consulting designed the project for $60,239 and Monarelli constructed the job for $210,000.