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i J � <br /> 10/05/88 09:26 V209 951 41005 <br /> Sr ptomber 21 , 1988 page 4 <br /> Chevron U . S . A . <br /> hydrocarbons vapors discharged to the atmosphere without; <br /> treatment . when this criter.•ia, cannot be meet , the county <br /> requires an Activated Carbon Absorption System Treatment . The <br /> determination as to whether the c17%,ha.ust. stream meets that <br /> criteria would be assessed at :such time as the system <br /> efOciency has been measured by the previousty antlined <br /> monit.uring program. A hermit from SJCAPCD was applied for and <br /> is currently being submi.ttcd for the discharge . Within LhO <br /> permit, application we are submitting wr have outlined a <br /> sampling sequence artd monitoring procedures arid protocols <br /> during the i.ni.tia.l start up and the following months . <br /> Tt should he understood that the permitting process for <br /> airshed discharges tvpiral.ly takes about 4 weeks . Therefore , <br /> we propose ho install the hardware portion of the remedial <br /> system upon ;our approval , however, start-up of the system <br /> will be postponed until the actual permit has been received . <br /> We. would apprec.iaLe your review of this proposed soil. <br /> remedial. system. We are seeking your approval for Phase I <br /> implementation as soon as pon*ible , since the contractor is <br /> ready to re-install the tanks within the next few days . we <br /> feel, the open excavation represents a cost reduction <br /> opportunity to the overall implementation of the remedial <br /> action plan. Additionally , in our Opinion , the installation <br /> of the Phase T system immediatly- would be necessary to avoid <br /> the possibility of impending rains from seriously affecting <br /> the soil stability in the ower, excavation . Soil sloughing <br /> of the excvavati.on sidewalls already- represents concerns for <br /> the performance of the adjacent building foundations . <br /> If you have any questions please do not hesitate to <br /> contact our office . <br /> Respectfully submitted , <br /> NAMES & MOORT <br /> Michael R. resin, M <br /> Senior Geotechnical Engineer <br /> MRF/sm <br /> Enclosures <br /> Cc <br /> Chevron U . S . ?.. - Gordon Bavitt <br />