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Manna Pro Corp. -A - August 16, 2011 <br /> . I <br /> Recommendation . <br /> i <br /> In March 2008, the Fund recommends that the San Joaquin County LOP direct the Responsible <br /> Party to assess the effectiveness of the current treatment systems and evaluate the need for <br /> additional air sparging locations near MW-1 to achieve Water Quality Objectives more rapidly. <br /> The Fund will review this site next year to track progress. <br /> UPDATED, March 2009,. by letter on-16 June 2008, San Joaquin County LOP staff stated they <br /> intended to direct the Responsible Party to re-e\ialuate the treatment system and the potential - <br /> for air sparging near MWA. - No such directive has been referenced in Geotracker. -The Fund <br /> continues to believe the treatment system should be re-evaluated and upgraded or altered to <br /> achieve Water Quality Objectives in a timely manner. The Fund will review this site next year to <br /> `track progress. <br /> UPDATED, August 2010, the Fund concurs with the San Joaquin County LOP that active <br /> remediation continue to achieve Water.Quality Objectives in a timely manner. The Fund will <br /> review this`site next year to track progress..- <br /> UPDATED, August 2011, monitoring well MW-1 screened in the source area has consistently <br /> had elevated concentrations of residual hydrocarbons in groundwater. However,.after 19 years <br /> of monitoring, the groundwater plume is largely limited to the source area. Analytical data <br /> indicate that WQOs have been achieved in-down gradient wells. Groundwater within the source, <br /> area will likely remain above WOOs for years to decades. The Fund recommends that the San <br /> Joaquin County LOP review.this site for closure. <br /> Kirk Larson, P.G. Date Robert Trommer, C.H.G. Date <br /> Engineering Geologist Senior Engineering Geologist <br /> Technical Review Unit Chief, 'Technical Review Unit <br /> (916) 341-5663 .(916) 341-5684. <br /> s <br />