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�sr-+•_` 'rs l5i n, rzrs d„�'o: _ rr .c_� -.._r ' r la Ye r_ `�`_ ___ � I =a }� , m-�. r `�. r s�. <br /> r rt• I Y ) .. ' h d r r z . ' ' r a Ir s r i 1 I 7 , r , <br /> y } ' ' Y I j r ' '•-e ' r � ' „ u e l ” <br /> F J <br /> I Quarterly Report - Third'Quarter 2005 <br /> " WEST-CLAY PROPERTIES <br /> r, <br /> J; 639,West Clay Street, Stockton, California <br /> L0. INTRODUCTION <br /> r' i I t <br /> At the request of West Clay,Properties,Adyanced,, eoEnvironmental,Inc- (AGE)has prepared this F -; <br /> quarterly report for the property located at 639 West Clay'Street, Stockton, California The site and <br /> the surrounding area are illustrated on Figure.l Structures,well and boring locations are Illustrated r <br /> on Figure 2 ,The scope of work performed during the third quarter of 2005 included installation of <br /> five off-site cone penetrometer test (CPT) borings for ground water sampling, installation of ten <br /> additional monitoring wells',well development,quarterly ground water monitoring and preparation <br /> ' ' } of this report { <br /> { <br /> k At the present time,there are thirty-two ground water monitoring wells at the site(Table 1) twelve <br /> _ are`"shallow"wells, `screened between 10 feet{and 35'feet'below surface grade (bsg), nine are `H <br /> I ? "intermediate" wells, screened between 30 feet and 50 feet bsg or 40 and 60 feet bsg, two wells are <br /> screened between 65 feet and 70 feet bsg,three wells are screened between 75 feet and 85 feet bsg, <br /> three new wells are screened between 95 feet and 105' feet bsg,}and three new wells are screened between 135 feet and 140 feet bsg This quarterly report has been prepared in accordance with <br /> r {Central Valley Regional Water-Quality Control Board(CVRWQCB)guidelines for investigation of <br /> 'underground storage tank (UST) sites ' <br /> The'following is a brief 'summary of second quarter 2005 ground water monitoring activities <br /> performed at the site r <br /> r h { I J S <br /> I „ • f On 16 September 2005,the grourid water monitoring wells were measured for deptlf to water <br />' , + and eight of the monitoring wells were.pur'ged and sampled <br /> • 'On 21,22 and 23'September 2005,off-site'assessment was conducted with the advancement <br /> of four,CPT soundings"and'associated depth discrete sampling (CPT 10 to CPT 14) ; <br /> • ',Between 10 acid 19 October 2005,ten additional'monitoring wells were installed at the site <br /> a <br /> ! <br /> = Between 14,and 25 October 2005,the ten,monitoring wells were developed-and sa fipling` ` '! <br /> t I ` -was performed at the wells after development ;{_ ' <br /> s } <br /> i <br /> 2.0. -PROCEDURES f L <br /> The field work''was performed in accordande with Sanr Joaquiri�County'Envir6nmental Health t, <br /> Department-(EHD) guidelines for sampling ;ground water monitoring wells and CVRWQCB A , <br /> -Iguidelines for investigation of UST sites The work was, also 'performed in accordance with <br />' procedures.approved'in the Off-site Assessment and Monrtorang-Well Installation Work Plan <br /> 'Addendum, dated 15 June 2005'and approved by,the EHD by letter dated 10 August 2005 <br /> � I <br /> 7 h <br /> f ? I '' e '` '• Advanced GeolEnnronmental,Inc ` <br /> r' <br />