SITE INFORMATION AND CORRESPONDENCE

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CHRONOLOGY PAGE2 i. 781 SWIFT WAY, STOCKTON 1994 02/28/94 Mike Collins generates comment letter to require additional 02/28/94 monitoring well in a down-gradient direction. MC also advises that cont quarterly reports are still due every quarter. 09/06/94 MC approves work plan to place MW-4 in westerly location of former UGTs. 10/01/94 Site now assigned to Mike Infurna (MI). 10/08/94 MI responds to diesel spill during re-fill operations at above ground tanks. 490 gallons to surface and to storm drain in Stockton Street. Sump in between line holds 99% of spill that made it to storm drain. 10/04/94 MI and Robert Kull of Wallace and Kuhl, discuss work plan and how only one well as proposed will not be adequate since north westerly to south-easterly recent gradients will require a down- gradient well also. 3'' Quarterly reports gradient to NW, at 0.01 feet per foot. 10119194 MI generates comment letter advising if only one well to be placed, previous northerly gradient for last 15 months indicates that the well should be placed north of former UGTs. 12/22/94 SWRCB conditionally accepts site for Cleanup Fund. 1995 01/09/95 MI approves multiple revised work plan to place two monitoring wells, MW-4 and 5. 02/08/95 MW-4 and 5 installed with 20' of screen, 29-49' bgs. 03/21/95 MI onsite for sampling wells. DTWIMW-1 at 29.40' bgs. Barely within screened interval. 04/28/95 15` QMR for 3121 event reveals gradient now to SE... 05/24/95 LOP site prioritization. This site to SLEH-1 B5. 10/05/95 MI finally issues off-site boring permit for MW-6 in City ROW at east side of Stockton Street, west of former UGT area after much back and forth with City and trucking company across street to the west 11/17/95 MW-6 installed with 30' of screen, 15-45' bgs. MI did not approve 30 foot screen but installed not in his presence.