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- <br /> �- .I:JnU1V1A:a1:4J110 r"W6iJrlplr..1(plrpil:U•IQY111 tri.VQJM1/.r yru vyoiurrui ,. <br /> December 28. 1998 v � <` <br /> Mr.Michael lnfurna.Jr. <br /> San Joaquin County Public Health Services <br /> Environmental Health Division <br /> 304 East Weber Avenue.Third Floor <br /> P.O.Box 388 <br /> Stocktor.California 95201-0385 <br /> Subiect: Letter Addendam to Work Plan For A ReptedW Investintion <br /> Beacon Station No.474 <br /> 3440 East Main Street.Stockton <br /> Site Code:1173 I <br /> Mr.Infuma: <br /> In response to the San Joaquin County Public Health Services/Enviromnemai Health <br /> Division (SJC PHS/EM) kna of Jul} 30. 1998. Horizon Environmental (horizon) <br /> proposes to rotund the proposed wart: in the Work Pine fat a Remedial Im+estiQation <br /> (Horizon.Jute 1.1998)and conduct additional work at the above-referenced site: <br /> Amend Task 1 to include <br /> Obtain an ertcroachmem permit from the City of Stockton Public Works <br /> Department(SPV✓D)to install a grounftw r monitoring well(JvfVl-10)in East <br /> Main Street. This utD will be installed w delineate bvdrocarbons in <br /> groundwater to the northwest. <br /> Replace Task 2 v%ith the foLowing: <br /> Task:.I: Dull an 8-inch diameter soil boring(B-7)at the location shown on Figure=. <br /> Based on historical gmundwatet levels quoted by the SJC PHSIEHD. soil- <br /> boring B-7 will be.drilled to an approximate depth of l Os feet below surface <br /> grade (bsg) to investigate the soil and groundwater at the histonca! icm <br /> groundwater level. In additional to collecting and subieetiveh•analyzing soil <br /> samples using an organic vapor meter (017M) at five-foot depth interval& <br /> continuous soil samples will be collected from approximately 90 fat below <br /> surface grade to the tonal depth with a split-sp(wn sampler or core barrel.while <br /> discreet groundwater samples will be collected at selected depths Witt: a <br /> HydroPunch* sampler. The two deepest soil samples collected at 5-foot <br /> interab and outer selected soil and groundwmer samples from this boring wili <br /> be sent to the laboratory on expedited tumaround. <br /> i <br /> SD1 Go:o¢r.=cor�iktarkwo,.Sae' pDorono�ft.CA95?62.(9t5'oao2i7L•FAX(916)939.2"? �g�, 1ryxruyie,lrtttgrN <br /> ?C.BO>::285-Bogersaeio.CR 9$3ak - (805)589.6394 . Fir(6,589-145. AN JOAQUIN(;UUN* , <br /> ENVIRONMENTAL.NEAUN DIVISION <br /> 3%E.W"Ave.7bW Foot <br /> P.O.Box 388,Sbftn,CA.9=1 <br /> Phone: (209)403420 <br /> XApproved <br /> i <br /> Approved with changes: nee Retr WM <br /> ❑Olseppmvsd: See ftffw les <br /> Ren'fB�Q �• �_ <br /> Date .• <br /> ey. <br /> Approval of these plans exte only to that <br /> w Ich 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 /> i <br /> d WOa� HV60r8 .666l-61—t <br />