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1'\J' A Disposal Site Investigation Notes : <br /> nvestigation conducted in April 2015 —Advanced GeoEnvironmental (AGE) retained by Pilkington North America law firm Reynolds & Brown to <br /> :onduct Preliminary Site Assessment and Site Investigation <br /> nvestigation included borings (18 borings) and ground water sampling and trenching (23 Trenches) within an area designated as disposal are* <br /> )epth to Ground Water 20 Feet <br /> .968 Historical Aerial Shows disturbance greater than area identified during AGE investigation (see below aerials) <br /> kug 10 1983 letter indicates that waste (plastic, wood and metal) was removed from the site to a County Landfill —was this documented? How mt <br /> vaste was removed from the site? <br /> )TSC found HW Violations at PNA Plant (and illegal disposal of HW); DTSC has referred lead agency status to Central Valley Regional Water Quality <br /> :ontrol Board for USTs and Ground Water contamination. <br /> ;ite appears to be graded and covered from 2013 to 2015 —was their a capping project performed at the site? <br /> Loring Logs AB 8, 9, 10, 18 & 19 appear to be within historic disposal area — no debris is shown in these boring logs, but debris is noted in the tren <br /> ags (T18, 19, 20 and 6, 7, 10, 11). <br /> 'rench Logs Comments: <br /> • When were logs prepared? <br /> • What was cover thickness? <br /> • Where were samples collected? <br /> • Was waste/native soil contact established at bottom of trench? <br /> • Were perimeter(boundary)trenches absent of disposal fill? <br /> • Were discolored soils sampled?Trench 14, 15, 19, 20 had discolored soils noted in the logs <br /> vaste Extents & Characteristics data necessary to determine the cost of clean closure, e.g. volume and type of disposal facility (Class I, II or III) <br /> F disposal site remains — RP will need to ensure that site meets state minimum standards for cover, drainage, erosion control, security, landfill gas <br /> nigration, post-closure land-use change approval from LEA and property transfer notification to the LEA <br />