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REPORT OF CHEMICAL TESTING ON FOUNDRY SAND <br />PURCHASE ORDER N0. 1070 <br />~i21961 <br />INTRODUCTION <br />This report presents our findings regarding the laboratory chemical <br />tests we have performed on samples of foundry sand furnished to us <br />by you. Four bag samples were delivered to our laboratory on September <br />5, 1975. <br />LABORATORY TEST PROCEDURES <br />The laboratory tests were performed. to determiTe the amount of water <br />leachable phenol, cyanide, total nitrogen (as NH3) and formaldehyde from <br />each sample. Also, loss-on-ignition tests were performed. <br />Leach Water Preparation <br />Generally 100 ml of water was added to SO g of sand. After mixing well <br />with a glass rod the sand was allowed to settle and the water to <br />remain in contact with the sand overnight. Then the water was filtered `- <br />array from the sand, and an additional 100 ml of water was filtered <br />through the sand. Except for the formaldehyde analysis the entire <br />sample was used in the subsequent analysis. <br />Phenol Analysis <br />In general the method of the Environmental Protection Agency (EPA) for <br />phenolics was followed (Methods for Chemical Analysis of Water and <br />SOEL G-'~CE~L06~c~iCtC~C7 <br />