Document 6wrjVgxJa5GmE22yQyQKdmM9d

Vista Chemical Company 15990 North Barker's Landing Road Post Office Box 19029 Houston, Texas 77224 Phone (713) 531-3200 December 14, 1987 Mr. Jack Neeld Environmental Conservation Conoco Inc. Marland Building P.0. Box 2197 Houston, TX 77252 Dear Jack: It has become necessary to include certain work items, listed below, as "expense items" under the Groundwater Cost Sharing Agreement. Vista proposes labor necessary for the items below be contracted to a mutually agreed upon agent. Estimates will be obtained from suitable companies or individuals to obtain a quantitative estimate of the work. The list below is what we know of at this time. As the project proceeds further, items may need to be added. If so, this will be done with mutual agreement and where necessary, further estimates obtained. List of Items 1. Items necessary to implement the Well Management Plant of 6/19/86. 2. Water level measurements necessary to accomplish the water level correlation work as outlined in Wojnowski's memo of 11/20/87. Please call me with your approval to proceed. Sincerely, Thomas G. Grumbles, C.I.H. Environmental Quality Manager aj o .23 cc M. G. Hayes W. L. McClain E. R. Taylor G. Wojnowski VVV 000014881