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VIMENTAL HEALTH DEPARTMENT <br /> PQu,M Q <br /> SAN JOAUIN COUNT' <br /> �o.•_�J.coG Unit Strperristrrs <br /> a' �"� •?� Donna K.Heran,R.E.H.S. <br /> Director 304 East Weber Avenue, Third Floor Carl Bor_man.R.E.H.S. <br /> At Olsen,R.E.H.S. Stockton California 95202-2708 Mike las—W. <br /> Wilson, <br /> S.,R.E.H.S.Douclas\\•.\\�il�on,R.E.EI.S. <br /> C4�tFpii�`P .E.H.S. <br /> Progrrenr datuia;e <br /> Laurie A.Cotulla,Rr Telephone: (209) 468-3420 Margaret Laeorio.R.E.H.S. <br /> Program Mtnrager. Fax: (209) 464-0138 Robert McClellon,R.E.H.S. <br /> Mark Barcellos.R.E.H.S. <br /> September 18,2003 Sent Certified and U.S. Mail <br /> Judy McCambell <br /> Tandy Corporation <br /> 100 Throckmorton St., Suite 81 1 <br /> Fortworth,TX 76102 <br /> RE: Installation of gas migration monitoring probes at Turnpike Rd.south of Downing Rd.,Stockton,CA. <br /> (APN: 17517018, 17517019, 17519001.) <br /> San Joaquin County Environmental Health Department(EHD)conducted a routine annual inspection on Jul 17.2003, at <br /> the above referenced location. The results of the inspection confirmed the presence of methane gas generated at the site. <br /> The gas readings were recorded at various locations along the perimeter by using a barhole punch and landfill gas <br /> instrument. It was observed that the highest of reading confirmed methane gas at a concentration of 3% on the northern <br /> property boundary of APN 17517018. <br /> 1. Title 27 CCR,Section 20923,Gas Monitoring. <br /> (a) To ensure that the conditions of section 20921 are met, the operator shall implement a gas monitoring program at the <br /> disposal site in accordance with the following requirements: <br /> (1) The gas monitoring network shall be designed by a registered civil engineer or a certified engineering <br /> geologist, and shall ensure detection of the presence of landfill gas migrating beyond the landfill property <br /> boundary and also into on site structures;and <br /> (2) The monitoring network shall be designed to account for the following specific site characteristics and <br /> potential migration pathways or barriers,including,but not limited to: <br /> (A)local soil and rock conditions; <br /> (B)hydrogeological conditions at the disposal site; <br /> (C)locations of buildings and structures relative to the waste disposal area; <br /> (D)adjacent land use,and inhabitable structures within 1000 feet of the disposal site property boundary; <br /> (E)man made pathways,such as underground construction;and <br /> (F)the nature and age of waste and its potential to generate landfill gas. <br /> According to Title 27 CCR, Section 20923,the EHD is directing the owner or operator to install a gas monitoring program <br /> under permit at the above referenced location. The EHD is directing you to submit a plan to install a minimum of one gas <br /> monitoring probe on north,south,east,and west property boundaries. <br /> Within 30 days of receipt of this notice, a written plan must be submitted to EHD for review and approval how the <br /> gas monitoring probes will be engineered and implemented. <br /> If you have any questions please contact Ted Tasiopoulos R.E.H.S.,of my staff at(209)953-7698. 1 <br /> Obert McClellon,Supervisor R.E.H.S. <br /> Environmental Health Department <br /> Cc: Jay Camina,URS Certified Letter# 70Ql c2,510c2,510 0005 <br /> ?�3a '3z6� <br />