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• <br />Harprit S. Mattu [EH] <br />1] <br />From: William Little <wlittle@advgeoenv.com> <br />Sent: Thursday, May 18, 2017 5:07 PM <br />To: Robert McClellon [EH]; Harprit S. Mattu [EH] <br />Cc: Young, Glenn@Cal Recycle; Sabra.Ambrose@CalRecycle.ca.gov; <br />Ann.Palmer@waterboards.ca.gov; Brian Millman <br />Subject: RE: 17100 Murphy Parkway <br />Attachments: PNA PCLU - Boring and Trenching Logs Waste Area.pdf <br />Mr. Robert McClellon: <br />In response to the emails sent following the review of the draft Post Closure Land Use plan at 17100 <br />Murphy Parkway, AGE includes the attached maps, logs and data sheets, as support to the findings <br />of the site investigation. Our evaluation of site conditions in the area of concern are presented with <br />the Iso-pac map of the waste handling area with an estimated 1,500 yards of glass (-/+) covered by <br />10,000 yards of clean soils (estimated by trenches T1 to T23). The glass handling area and the <br />potential building footprint are presented. <br />You requested some form of demonstration for the post construction layout. All site work designs are <br />not yet developed nor has the scope be completely finalized. Drainage and sewer, fresh water / <br />landscape piping, along with lighting or electrical conduits will need to be installed in shallow <br />trenches, on the site in the area of parking or paved travel lanes. New language for the soil <br />management and waste burial will be added the language of the plan. <br />The evaluation potential for soil -vapor issues or soil -gas (methane) generation from the off-site waste <br />and the collection of methane under the proposed building should be adequately understood based <br />on the samples collected under the build site, particularly as the distance of the buried waste (metal <br />and glass) on the other property is over 350 feet to 400 feet west of the only structure proposed. <br />If this off-site consideration or element is now a new requirement of the project review, please clarify <br />the route to the authority on which party is responsible / has this requirement. <br />Please call to discuss any questions. <br />Thank you <br />AdvancedGea <br />Environmental <br />., <br />M EmjoroyreoNr cvy <br />William R. Little, P. G. <br />Senior Geologist <br />CA Professional Geologist No. 7473 <br />WA Registered Geologist No. 2778 <br />OR Registered Geologist No. G2254 <br />OISP 264 and OSP/QSD 20027 <br />Advanced GeoEnvironmental, Inc. <br />Environmental • Compliance • Industrial Hygiene • Geotechnical <br />Phone: 800-511-9300 <br />