Laserfiche WebLink
-� Upgradient Enviroi. ental Consultants <br /> Apni:1. 1998 r <br /> Mr.Michas[lafurna.Senior Ett~HS <br /> 2F,.t I 0 f <br /> Public Health Services <br /> Environmental Health Division <br /> San Joaquin County <br /> U.0.Box 2009 <br /> Srocktan.CA 45201 <br /> Subject: Work Plum Addendum <br /> F&HKwiktee food Mart Dx082 Como"Club Boulevard Stockiet4 CA <br /> Dew Mr.infumn: l Q <br /> On behalf of Mr.Willintn Perces.UPV=dient Environmental Consultants would like to further amend the ! <br /> October 1997 work plan for investigation of contamination at 2081 Country Club Boulevard.This <br /> request stems from the nesutm o£the recent tank removal at the site,which documented that the USTs <br /> have been a continuing source of gasoline contamination of the underlying soil and groundwater.In view <br /> ofthis new informatton.amort:thorough investigation of th*axtem of soil contamination in the vicinity <br /> of the USTr.is warranted.Because the dam gained floor such an investigation will likely have an impact <br /> on the location.number.and type of wells that will need to be installed to adequately assess and <br /> remediate the groundwater conteminmion.it is our opinion that the soil asstesment should take priority at <br /> this time.Hrnm we request that the drilling of additional monitoring wells be delayed until after we <br /> have performed a soil assessmanL if this meets with your approval.we anticipate conducting tire seed <br /> assessment and co[tecting a round of groundwater samples Rotor the existing wells in mid-Mav and <br /> completing the report in early June.Drilling and installation of wells could then take place during the <br /> herd gmtrter of 1998. <br /> The attached Site Map shotes the location of five propowd Geoprobe borings.The first boring will be <br /> drilled in the southeast corner ofthe former UST cavity.when contaminant ctmemnxitions reached a <br /> maximum in the recent mnk removal samples.The purpose of this boring is to detenaine the maximum <br /> depth of conmaminatian.At preaanL we estimade drilling to apptoxmitsly 35 feet.The depth of subsequent <br /> Wrings will W determined on a ease•by-case basis,but Cash will be drilled CO a minimum of 30 feet.Sail <br /> samples will be collected nt S foot intervals.and we anticipate submitting a minimum of:!samples per <br /> boring for laboratory analysis.The samples will be analywd for TPH-gawline.UTEX.and five <br /> oxygenates.and 3 samplta will also be submitted for pernraabiiity,Total Organic Carbon.and baemnal <br /> abundance.After sampling,the borings will be backfiiled with cartent Lin to the surface. <br /> In conjunction with this phase ofdriltin,%we will atoo perform the its quarter grpundsvatcr mcninariRu <br /> Water samples will be analyzed as in Previous monitoring events- <br /> Sincerely, <br /> Victor a.Cherven.Ph.D- <br /> Prestdent £ <br /> cc:Willam Peters SAN JOAQull'� irti0 y€y <br /> !� r� <br /> Starkm+t P.O.J2car800z 9tac►ton CA 9=08 (2091BKMONM NTAL HEALTH DIVISlC�9 <br /> Cameron Pcrdr x.759 KAmbatr P-4 Camerae ParA.CA 96582 (9.W)677-s" 8rIA E. Weber Ave.Third Floor <br /> P.O. Box 388, Stockt,-n,CA 9520!-0388 <br /> Phone: (209) 458-3420 <br /> 0 Approved <br /> Approved with charges: See Remarks <br /> D@sapprov d: Sets R imutks <br /> Remarks <br /> UAi <br /> .� tic Boa, <br /> z <br /> oats BY <br /> Approval of these plans ext ds only to that <br /> which is shown and described hereon but <br /> does not authorize or approve any omission <br /> • or deviation of requirements of State laws or <br /> Local Ordinances. <br /> ,U 11' <br />