SITE INFORMATION AND CORRESPONDENCE FILE 2

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n ENVIRON .LAENTAL HEALTH DEPARTMENT SAN JOAQUIN COUNTY Donna K. Heran, R.E.ILS. Unit supervisors ��- Dbecmr 304 East Weber Avenue, Third Floor Carl Borgman , R.E. H.S . Laurie A. Cotulla, R.E.H.S. Stockton, California 95202-2708 Mike Huggins, R .E.H.S . , R.D.1. • �. , ."P Program Manager t Douglas W. Wilson, R. E.H. S . , �_oa� Telephone : (20)) 468-3420 Margaret Lagono, R . E. IkS . Fax : (209) 464-0138 Robert McClellan, R.E.H.S . Website: www. sjgov.oi-g/ehd/ Jeff Carruesco, R .E. H.S . DANTE JOHN NOMELLINI NCC PROPERTIES PTP FEB 2 1 2006 PO BOX 1107 STOCKTON CA 95201 RE : Nomellini Construction Company Site Code: 1779124 1045 W . Charter Way RO# :382 Stockton, CA, 95206 SWRCB-CUF#:000552 In correspondence dated April 28 , 2005, San Joaquin County Environmental Health Department (EHD) commented on the Cone Penetrometer Testing/Site Assessment Report you submitted . In this correspondence EHD advised that since no chemicals of concern were detected in the vapor samples collected from the soil vapor extraction (SVE) system , 'the system should be shut down unless it can be demonstrated that sufficient contaminant mass is being reduced by the system under the current prevailing conditions. " Additionally, EHD advised you that the ground water petroleum plume requires remediation and the plume in each hydrological unit (HU) should be assessed and monitored by dedicated wells in the undelineated directions . A work plan was required to be submitted for the placement of these monitoring wells. As of the date of this letter, EHD has not received documentation that the SVE operation has been discontinued or its continued use is justified . Additionally, the required work plan has not been received . The investigation phase of this site is not complete. Additional work in required . B not P q Y submitting the required information (SVE justification or work plan), you are not in compliance with EHD requirements . You are hereby directed to submit a work plan to EHD that proposes the installation of monitoring wells to investigate the lateral and vertical extent of the petroleum release from the UST located at this site. You are also directed to resume quarterly ground water monitoring and sampling for all wells at this site and to submit the report (QMR) to EHD prior to the next subsequent sampling event. The work plan is due EHD by March 31 , 2006. The next QMR (First Quarter — 2006) is due at EHD April 17, 2006. You may contact Michael Infurna , Senior REHS at (209) 468-3454 should you have any questions. Donna Heran , REHS , Director Enviro ental Health Department o�p' Michael J . Infurna Jr. , error REHS Margaret Lagorio, REHS. LOP - Unit IV Supervisor MI/ c: CVRWQCB — James Barton , Sacramento . c: AGE — Tim Cuellar, 837 Shaw Rd , Stockton . c: SWRCB-Clean Up Fund — Mark Owens , Sacramento.