Laserfiche WebLink
0 4P <br /> Ms. Linda Turkatte, R.E.H.S. <br /> June 16, 1993 <br /> Page 3 <br /> As service station owners and operators, the Adjacent <br /> Landowners have owned and operated underground storage tanks for <br /> storage and dispensing of RCRA regulated substances (petroleum) <br /> for many years. on December 7, 1988, two tanks were removed from <br /> 101 South Wilson Way and the testing established substantial <br /> contamination levels. The unauthorized release reports for both <br /> tanks state that the conditions were "poor" and contained "holes" <br /> with significant "corrosion. " Samples taken from the two tanks <br /> establishes the following results: <br /> Chemical(ug/kg) Tank 1 Tank 2 <br /> TPH-g 2, 200, 000 1, 600, 000 <br /> Benzene 22 , 000 <br /> Toluene 100, 000 <br /> Xylene 60, 000 520, 000 <br /> Ethyl Benzene 60, 000 68, 000 <br /> These documented releases remain uninvestigated. The <br /> current owners of 101 South Wilson Way were required on February <br /> 3, 1989, to conduct further site assessment of the documented <br /> contamination. To date the property owners have not incurred any <br /> costs for site assessment or remediation while the Roeks have <br /> been incurring costs for the past four years. The pursuit of <br /> Roek Brothers and non-pursuit of the Adjacent Landowners is <br /> inequitable and unjustified. <br /> This is particularly true in light of the fact that <br /> information compiled to date from investigations undertaken by <br /> Roek at the Site have not confirmed that the documented groundwa- <br /> ter contamination under the Site resulted from an on-site source. <br /> Rather, the date indicates that contaminated groundwater is <br /> migrating on-site from up-gradient sources. For example, <br /> 1. BTX&E and TPH levels in the groundwater (10 ug/kg) <br /> directly below the soil contamination in the <br /> northwest corner are much lower than would be <br /> expected from a source area; one would expect that <br /> residual fuel in the soils would, through absorp- <br /> tion, desorption processes have continued to <br /> contribute to higher groundwater contamination <br /> levels; <br /> 2 . The highest soil contamination levels at the Site <br /> are found between 15 and 20 feet below the ground <br /> surface, while the highest historical groundwater <br /> level in the area occurred at a depth of about 38 <br /> feet according to historic groundwater elevations <br /> obtained from Stockton East Water District and San <br /> F:\TRN\17093\C\ROEK.JMZ <br /> 75376/JMZ/06/16/93/2 <br />