WORK PLANS - Laserfiche WebLink

Home Browse Search

AdvancedGeo 09 January 2019 Environmental AGE Project No. 99-0559 � G Page 2 of 7 dated 16 November 2018. The historical research indicated that T-5 and T-6 were discovered during the removal of USTs T-1 through T-3 in January 1999, and that T-5 and T-6 were 5,000-gallon gasoline USTs. T-5 and T-6 were removed in February 1999 and soil samples were collected beneath each end of the tanks under the oversight of the San Joaquin County Environmental Health Department (EHD) and City of Stockton Department of Fire Prevention. Soil samples collected beneath Tanks T-5 and T-6 were analyzed for the appropriate constituents in accordance with regulations and requirements for sampling beneath gasoline USTs. The historical research also indicated that T-4 (WOT) was removed in January 1999 and one soil sample was collected beneath the tank (T-4) and one stockpile sample was collected (SP-5). The WOT soil and stockpile samples were analyzed for the constituents required for sampling beneath waste oil or unknown tanks (TPH-g, TPH-d, TOG, VOCs, SVOCs, and metals). Based on the above information and historical research performed, additional soil sampling and analysis is not necessary in the locations of former tanks T-4 through T6. The tank removals, sampling, and analytical results for T-4 through T-6 were reported in UST Removal and Soil Sampling dated 09 February 1999 and Underground Storage Tank Removal and Soil Sample Analysis dated 25 March 1999 (Appendix C). Additionally, based on the historical documents and reports reviewed, AGE does not believe there is an abandoned 7t" tank remaining in-place at the site. The only records indicating a potential 7t" tank was prior to February 1999, and before tanks T-5 and T-6 were removed. Based on the estimated location of the potential 7t" tank, AGE believes the tank was mistaken for either T-5 or T-6. Also, there are no records or reports identifying a 7t" tank during the UST removal activities for T-5 and T-6. The scope of work will include the following tasks: • Permitting and pre-field work activities. • Soil boring advancement and sample collection. • Soil boring advancement for installation of soil vapor wells. • Soil vapor sampling • Soil boring abandonment. • Report preparation. Each of these tasks is described in greater detail below.