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Harprit S. Mattu [EH] <br /> From: Young, Glenn@CalRecycle <Glenn.Young@Cal Recycle.ca.gov> <br /> Sent: Monday, August 03, 2015 8:36 AM <br /> To: 'William Little'; Ambrose, Sabra@CalRecycle <br /> Cc: Harprit S. Mattu [EH]; Robert McClellon [EH] <br /> Subject: RE: Pilkington Facility, Lathrop, CA <br /> Bill-in general-if you determine that contact with native (undisturbed geology) has been established -then this should <br /> be noted in the trench logs as the bottom of waste. <br /> Generally-we will over-excavate 2 feet past the bottom of waste to collect soil samples for analysis(to determine if any <br /> vertical contamination from the disposal fill area exists). <br /> Glenn <br /> -----Original Message----- <br /> From: William Little [mailto:wlittle@advgeoenv.com] <br /> Sent:Thursday,July 30, 2015 3:25 PM <br /> To:Young,Glenn@CalRecycle<Glenn.Young@CalRecycle.ca.gov>;Ambrose,Sabra @Ca lRecycle <br /> <Sabra.Ambrose@CalRecycle.ca.gov> <br /> Cc: Harprit S. Mattu [EH] <hmattu@sjcehd.com>; Robert McClellon [EH] <RMcClellon@sjcehd.com> <br /> Subject: RE: Pilkington Facility, Lathrop, CA <br /> Mr.Glenn Young: <br /> AGE is proceeding with investigation of the soil/waste profile on the former PNA site.AGE has established trenching <br /> through waste and encountered native soil at each location, directly under the waste.Additionally, surrounding the <br /> waste area,trenches without glass and native soil were established/documented.Several locations of trenching have <br /> only demonstrated glass within the upper 18 inches of soil. <br /> Within the waste handling area trenching has been established and soil samples collected under the waste media, into <br /> native soil (waste free).Additional retrenching and resampling will be conducted to analyze for the full suite of <br /> requested chemicals. <br /> As the site examination is proceeding and finalizing, a questions has developed.To what depth within native below the <br /> waste, does the investigation need to proceed? How many feet under the layer of glass/waste is needed to be <br /> investigated,once native soil types are observed? <br /> AGE has the LEA inspecting each trenching location. <br /> William Little <br /> California Professional Geologist#7473 <br /> Advanced GeoEnvironmental, Inc. <br /> Environmental . Industrial Hygiene . Geotechnical . Contracting <br /> Phone: 800-511-9300 <br /> Fax: 888-445-8786 <br /> wlittle@advgeoenv.com <br /> www.advgeoenv.com <br /> This email/fax message is for the sole use of the intended recipient(s) and may contain confidential and privileged <br /> information.Any unauthorized review, use, disclosure or distribution of this email/fax is prohibited. If you are not the <br />