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California Regional Water Quality,Co0 �`1 hoard <br /> Central Valley Regi <br /> Robert Schneider,Chair ph t2� ` <br /> Winston H.Hickox 6 Gray Davis <br /> Secretary for Sacramento Main Office Governor <br /> Environmental Internet Address: http://www.swrcb.ca.gov/rwgcb5 <br /> Protection 3443 Routier Road,Suite A,Sacramento,California 95827-3003 <br /> Phone(916)255-3000•FAX(916)255-3015 <br /> 13 January 2002 <br /> Mr. John Moe <br /> Union Pacific Transportation Company <br /> 49 Stevenson Street, 15th Floor <br /> San Francisco, CA <br /> REQUEST FOR MONITORING AND REPORTING PLAN MODIFICATIONS, UNION PACIFIC <br /> RAILROAD COMPANY, TRACYRAILYARD, TRACY, SANJOAQUIN COUNTY <br /> We have reviewed the report Request for Monitoring and Reporting Plan Modifications, Union <br /> Pacific Railroad Company, Tracy Railyard, Tracy, California dated 9 October 2001 prepared by ERM. <br /> The report presents a request for modification of the Regional Water Quality Control Board's (Board's) <br /> groundwater Monitoring and Reporting Plan (M&RP)No. 95-811 including a decrease in the monitoring <br /> frequency of some groundwater monitoring wells and abandonment of wells. <br /> Our comments are provided below. <br /> General Comments: <br /> 1. Based on the supporting information provided, we concur with your request to modify the <br /> monitoring frequency and abandonment of wells shown in Table 1 of the report. The following <br /> wells are proposed for abandonment: MW-03A, MW-03B, MW-03C, MW-17A, MW-17B, MW- <br /> 18A, MW-18B, MW-19A, MW-21AR, and MW-21B. However, continuation of measurement of <br /> water levels and free phase petroleum product thickness is required semi-annually from all other <br /> wells. Please note that further changes to the monitoring frequency may be required based on <br /> review of new information. A draft M&RP is included for your review and comments. Please <br /> provide comments on the draft MRP by 15 February 2002 in order for us to rescind and replace <br /> MRP No. 95-811. <br /> 2. Please submit a workplan for well abandonment for review prior to any abandonment activities. <br /> The procedures for well abandonment must be in accordance with San Joaquin county <br /> requirements. <br /> Specific Comments: <br /> 1. Table 2; the notation for less then (<) is incorrectly shown as (>) in several places. <br /> California Environmental Protection Agency <br /> p�a Recycled Paper <br /> The energy challenge facing California is real. Every Californian needs to take immediate action to reduce energy consumption. <br /> For a list of simple ways you can reduce demand and cut your energy costs,see our Web-site at http://www.swrcb.ca.gov/rwgcb5 <br />