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© AEHS, Inc. www.aehs-sa.com 1 Environmental Support.

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Presentation on theme: "© AEHS, Inc. www.aehs-sa.com 1 Environmental Support."— Presentation transcript:

1 © AEHS, Inc. www.aehs-sa.com 1 Environmental Support

2 © AEHS, Inc. www.aehs-sa.com 2 Environmental Support To: Mr. Roy Brown Because: Concerns voiced of college being built on a landfill or surrounding impacts Content: –Phase I Environmental Site Assessment –Environmental Field Investigation

3 Phase I Environmental Site Assessment Performed by Marcie Hart, MS Following ASTM E1527-05 methodology –View aerial photographs –View topographic maps –Review federal and state environmental data bases –Title searches –Interviews : Staff, Residents, Previous Workers –Visual observations © AEHS, Inc. www.aehs-sa.com 3

4 © AEHS, Inc. www.aehs-sa.com 4

5 Topographic Maps – 1967 & 1973 © AEHS, Inc. www.aehs-sa.com 5

6 Topo Maps - © AEHS, Inc. www.aehs-sa.com 6

7 Environmental Investigation Jeff Neathery, PG Electromagnetic Conductivity Survey –Anomalies Backhoe Excavation - six Drilling - six Sensory – visual, odor, tactile Sampling © AEHS, Inc. www.aehs-sa.com 7

8 Electromagnetic Conductivity 38 passes 50 feet detection © AEHS, Inc. www.aehs-sa.com 8

9 © AEHS, Inc. www.aehs-sa.com 9

10 © AEHS, Inc. www.aehs-sa.com 10

11 © AEHS, Inc. www.aehs-sa.com 11 Drilling

12 Sampling/Observations VOCs – Volatile Organic Compounds 3 Samples for 80 different constituents Odor – None Color – Nothing unexpected Texture – Aligned with soil type © AEHS, Inc. www.aehs-sa.com 12

13 1938 and 1959 © AEHS, Inc. www.aehs-sa.com 13

14 1963 and 1977 © AEHS, Inc. www.aehs-sa.com 14

15 1985 and 1996 © AEHS, Inc. www.aehs-sa.com 15

16 2004 © AEHS, Inc. www.aehs-sa.com 16

17 Conclusions No evidence to support a concern of the presence or likely presence of any hazardous substance or petroleum products to indicate a release, past release, or threat of a release No evidence that any portion of the Palo Alto Campus is located over a former landfill © AEHS, Inc. www.aehs-sa.com 17

18 Concerns Handling methodology of hazardous waste Acid dilution tank © AEHS, Inc. www.aehs-sa.com 18

19 Recommendations Handling of Hazardous Waste Acid Dilution Tank Mr. Roy Brown Share the results with the Staff/Employees © AEHS, Inc. www.aehs-sa.com 19

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