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KA <br /> Working to(restore Nature <br /> o Because the mass of hydrocarbons .retraining in .place is .low and the <br /> hydrocarbons are not currently impacting groundwater,_ it is our opinion that <br /> no additional remediation is warranted. <br /> Based'on the cumulative results of our environmental investigation, RESNA recommends <br /> site closure. Once the site closure request-has been approved, we recommend that the wells <br /> be destroyed.Please call us at (916) 852-6690 if'you have any questions regarding this <br /> project. <br /> Sincerely, _ <br /> RESNA Industries Inc. GFo` <br /> p <br /> cN <br /> Claudio Avila <br /> - Eon <br /> G oio ist <br /> No. 4313 <br /> B..Bobbitt, R.G. QF CAi.�Er Project Geologist <br /> Attachments: Plate 1, Site Vicinity Map <br /> Plate 2, Generalized Site Plane <br /> Plate 3, Potentiometric Map (August 1993) <br /> Plate 4, Potentiometric Map (October 1993) <br /> Plate 5, _Potentiometric.Map (January 1994) <br /> Plate 6, Potentiometric-Map (April 1994) <br /> Plate 7: Residual Gasoline Hydrocarbons in Soil' 18 to 30 Feet <br /> Below Grade Surface <br /> Plate 8: Residual Gasoline 'Hydrocarbons.in Soil 31 to 86 Feet. <br /> Below Grade Surface <br /> Plate 9: -Distribution of-BTEX-Hydrocarbon in Soil <br /> Table 1; Results of Chemical Analyses-of.Soil Samples Collected <br /> From the Former'Tank Cavity <br /> Table 2, Results of Laboratory Analyses of Soil Samples <br /> Collected From Soil Borings <br /> Table 3, - Groundwater Monitoring Data <br /> References - <br /> Case Closure Summary <br /> E 0504gtA/12MW.01 6 <br />