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i Sampling Plan- 152 East I Ith Street, Tracy, CA Page 6 I that were located on the Tracy Auto Parts site, or from any of the several other potentia • sources of petroleum product discharge on close-by sites up and down 11th Street ate., = r"!� It is important to understand that the interpretation shown on Figures 2 is not intended to - •�" be definitive It was developed solely as an aid to understanding of the availabI k U geotechnical data and for the purposes of planning further investigations of subsurface and; ¢ 7",- water ,-water quality conditions The presentation should not be used as a definitive basis foto X11 UJ determining the precise hilts of any hydrocarbon fuel components affecting the �- subsurface Nor should it be used for reaching a conclusion as to whether or not groundwater affected by hydrocarbons that may have been released into the subsurface on the 152 E 11th Street site has, or has not, coalesced with fuel components released into the subsurface on the Beacon Station site COOPERATIVE PROGRAM WITH ULTRAMAR INC. At the request of the SJCPHS, the Navarras and Ultramar Inc have agree to cooperate for the purposes of implementing a sampling plan for the unified array of monitoring wells on, and in the areas umnediately surrounding, their respective properties The purpose of the cooperation is solely to effect an efficient sampling program and permit the results of the samples to be available to the two parties and to the SJCPHS in an integrated and readily analyzable format As long as the agreement is in effect, the understanding between the parties provides for The San Joaquin Company Inc , as consultants to the Navarras, to have access to Ultramar's property at 153 East 11th Street and to Ultramar's monitoring wells for the purpose of taking samples according to the plan presented herein The San Joaquin Company will give notice to Ultramar prior to each occasion that access to their wells is required so that Ultramar may arrange to have a representative present when the work is performed The Navarras have agreed to provide Ultramar with the results of the groundwater depth measurements and the results of the analyses of samples recovered from the wells on both properties Ultramar and the Navarras have agreed to share the costs of implementing the plan The agreement between the Navarras and Ultramar to cooperate in the manner described is limited strictly to the objectives stated It is not intended to impose or unply any restriction or obligation on either party with respect to any use of the data obtained or to relieve either party of any reporting or other regulatory compliance requirements that may apply to either property Nothing in the cooperative agreement restricts the separate and independent action of either party with respect to its own property nor is it intended to limit in any way either party's legal rights or obligations Either party may terminate the agreement at any time and without notice to the other If, at any time or for any reason, either the Navarras or Ultramar elect to discontinue the cooperative sampling program, the Navarra's propose to continue with the planned schedule of groundwater samphng in so far as it involves their own monitoring wells unless the SJCPHS, or other regulatory agency having jurisdiction, requests otherwise