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Advanced <br /> GeoEnvironmental , Inc . E <br /> i <br /> :,'AL HEALTH DIVISION --" --- <br /> 4 E. Webt:r Ave. Third Floor <br /> 18 September 1998 Box 388, Stockton CA 95201-0388 <br /> AGE-NC Project No. 98-0452 Approved <br /> 0crti2d _1 �e_J2_ fA <br /> Mr. Jeff Wong r(9 ! 2+u by v <br /> San Joaquin County Public Health Services - Environmental e vision <br /> 304 East Weber Avenue, Third Floor SDr��✓���� <br /> Stockton, CA 95202 e duC, <br /> Subject: Work Plan Addendum - August 1998 ;u{ ,_�yioj 4 ( i 1"o t <br /> YAMADA BROS. kiQrra n cif -fh l's ro l n f. <br /> 15406 South Tracy Boulevard, Stockton, California �d(�c�nCQ -�c l5'�r, ZG <br /> Dear Mr. Wong: C� C�� i4tt <br /> 3, Cil C`cf n/I d vL nt�i'y zC <br /> At the request of Mr. Bob Yamada, Advanced GeoEnvironmental, Inc. (AGE) has prepared the �15Lrfe <br /> enclosed Work Plan Addendum for 15406 South Tracy Boulevard near Stockton, California.A work <br /> plan for the installation of three groundwater monitoring wells was submitted to the San Joaquin S'cznlPlE'S <br /> County Public Health Services - Environmental Health Division PHS-EHD in June 1998. Due to ? " <br /> ( ) Ir the low concentrations of hydrocarbons detected during the underground storage tank removals, the <br /> PHS-EHD recommended in a July 1998 phone conversation that site investigation be performed by <br /> the advancement of soil probe borings (probings) near the former location of two USTs at the site <br /> and the collection of soil and grab water samples. <br /> A Site Health and Safety Plan is currently on file with the PHS-EHD for the site. Soil boring <br /> will be obtained prior to initiation of drilling at the site. <br /> It Ce C6,_( <br /> SAMPLE COLLECTION AiJ- 'y e ST I r zv SLlnp 5 ;: <br /> A total of six soil probe borings (probings) will be advanced for the collection of soil an grab water <br /> samples. The proposed probing locations are shown on figure 2. All probings will be advanced into � ,��� Ps <br /> the top of the water table at an approximate depth of seven feet below surface grade (bsg), using a <br /> Geoprobe soil sampling assembly pre-loaded with four 1.125-inch by 6-inch brass sleeves. Probings <br /> may be advanced to greater depths or additional probings may be advanced based upon field �c�ilfccrnX� <br /> observations. <br /> A grab water sample will be collected from each probing using a Geoprobe water sampling assembly <br /> by advancing the ground water sampling assembly through the ground water interface and retracting .�� kka fcY\ <br /> D4 S v�ti 4 5 for <br /> LQ <br /> .� <br /> 4005 N�)rth WiImm, �t';i�, .5���i1<km (.`nlilt)rwo 0520'5 Advanced GeoEnvironmental,Inc. clAL'y '2 <br /> Tclel)hom: __109) ,.1b7-I000 [AXI 09 .467-i I IS AlL)S � tocC <br /> -L <br />