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14.01
<br /> San Joaquin County DWECTOR
<br /> =
<br /> Environmental ADonna Heran,REHS
<br /> SSISTANT DIRECTOR
<br /> 600 East Main Street Laurie Colulla,REHS
<br /> H �
<br /> Stockton, r is 95202-3029 PROGRAM C RDWATO r
<br /> k: Carr r3C}1'gman REHS
<br /> Mike Huggins,REHS,RDI
<br /> Web site,-www.sjgov.org1ehd
<br /> Margaret Lagodo,RENS
<br /> Phone; (209)468-34201 RobertMcclerlen,REMS
<br /> Fax. (209)464.0138 �Wff Carruesco,REHS,RDI
<br /> KsseyFoley,..REHS
<br /> De <rn,,'_,ero- 101, 2008
<br /> Alf 1.esporr R e �a fes
<br /> eft 01list)
<br /> kk n llll tr'�palltart Airport SITE CODE. 140
<br /> ockiton CA 9 ,206
<br /> The San Joaquin . County Environmental Health Department � �1t`; tied reviev�eci
<br /> r .a , lam er : rfon'N ng Re�c�lt. Mrd Quarter 2008 (Report) dat=,r:; der, 26, 2�t�B,
<br /> tri tT ittt c on your behalf bar M�arrrege l nvironmerrtal, Inc. (Ramag<:.} and hay the fcrlMoviring.
<br /> The Report G1£3 url�ents a routinecjuar,erl .g'roundW61C> 37 ar $c:}a,E' SII 5a�73 itng event
<br /> cl nductedat yUr site on epten')beu 4, 200& Eight grr)Undl�v<, emonitoring wells were
<br /> arripled ;end imty"d for petroleur.n hy(Jrocarbon constituents. ytic l results were
<br /> 1.4041 of.4 646, with XII repo ing h highest concentrations o oontdrrilhant . As the.
<br /> Report statesntration's of petroleurn hydrocarbons in groundwater attenuate laterally
<br /> the urs a, where -Iis:located. Deported con entrations in wells MW-4, MW-5
<br /> and` - are low enough to provide definition, and in general are declining.
<br /> Review of Table 2, Analytical Results -- Soil USTRemovals) indicate that total petroleum
<br /> hydrocarbons as diesel (TPHd) was reported in samples collected beneath several of the
<br /> former UST's. please add analysis for TPHd to the routine quarterly groundwater sampling
<br /> analysis regimen. if results are reported non-detect for two quarters, the analysis can be
<br /> discontinued. Following the two quarters, teased on established concentration treads, the
<br /> EHD recommends reduction in sampling of wells MW-4, MW- , and MW-6 MW-6to a semi annual
<br /> schedule,and of wells-MW-7 and MW-8 to an annual schedule
<br /> 'lease proceed with submittal of a Feasibility Study (Study) for remediation of the petroleum
<br /> hydrocarbon contamination remaining at your site, in troth soil and groundwater, and submit
<br /> it to the EHD no-later than March 27, 2009. The Study should compare at least two remedial
<br /> alternatives for their ability to remediate the contamination, and for cast effectiveness.
<br /> Mf y:: have any questions please call Eon Duncan at tag) 468-0337.
<br /> Slnd+ r�ly,
<br /> Dori Dun, -_ii t, RE Marga 1, c} ario, REHS
<br /> R gisteredEnv1r�Jnmental 14"th Specialist ''rograrrr t.c. 7rclir€ator, grit 1V
<br /> c: Ja rw��_-'ys Blarton,C I CCB; 11020 Sun Center Drive#200, Rancho Cordova' CA 95670
<br /> Joe Ran-iage,:.Rarxta9 l nviro., 465 S. Meadows pkwy ate: 20 PMB 1 ., � Reno.,.illV 89521
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