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Ir <br /> Mr. Ken Gillies • <br /> Gillies Trucking <br /> 3931 Newton Road, Stockton <br /> Page 2 of 2 <br /> During conversations with Mr. Muir, it was noted that since there has been additional <br /> development in the area since the sensitive receptor survey of your vicinity was reported <br /> in June 1999 and that significant site characterization data has been obtained since the <br /> Problem Assessment Report (PAR) of October 1996 was prepared, it would be prudent <br /> to update these documents. The EHD concurs with this recommendation and directs that <br /> the updates be prepared and submitted to the EHD by Q3 March 2008. Also, as you <br /> have a new consultant, Mr. Muir should review the site conceptual model (SCM) and <br /> update it in accordance with his professional opinion; the updated PAR can be submitted <br /> in the context of the reviewed or updated SCM. If additional data is needed to complete <br /> these updates, submit a work plan with the technical justification to acquire the data. <br /> In view of the above directives and being mindful that some additional time would be <br /> helpful for your new consultant to become familiar with your site, the 07 January 2008 <br /> due date to report on an evaluation of potential remedial methods to address impacted <br /> soil on your site is waived; a new due date will be set after review of the PAR/SCM. <br /> Questions or comments may be directed to Nuel Henderson by mail (address on letter <br /> head), or by telephone at (209)468-3436. <br /> Donna Heran, REHS, Director <br /> Environmental Health Division <br /> Nuel C. Henderson, Jr., PG Margarel Lagorio, REHS <br /> Engineering Geologist Program Coordinator <br /> Unit IV- Site Mitigation Unit IV— Site Mitigation <br /> cc: James L.L. Barton, PG — CVRWQCB <br /> Stephen Muir, PG, EG, GP— Muir <br />