Laserfiche WebLink
Peterson Technical services R <br /> -. - RECEIVED <br /> December 1 , 1988 Q 1988 Q <br /> Dye <br /> Li`,j u <br /> §A pAQUIN COUNTY <br /> Mr. Chet Davisson , Director 198u PLANNING DIVISION <br /> San Joaquin County ,�1 �i.'i;�7Fl <br /> Department of Planning and Building IngPef1 ;k9FJVICES <br /> 1810 E. Hazelton Avenue <br /> Stockton, California 95205 <br /> Dear Mr . Davisson: <br /> I am sending you this letter , at the request of Dr . Helmuth <br /> Hof£ , in order to outline - for you the current plan for sampling <br /> the soil and groundwater on the Woodson Estates property, for the <br /> purpose of characterizing the potential risk which may exist as <br /> a result of the presence , if any , of chemicals identified by the <br /> California Department of Health Services (CDHS) during their site <br /> evaluation of Lodi Airport. The Lodi Airport has been scheduled <br /> by CDHS for clean-up as a hazardous waste site under the <br /> Hazardous,. Substance Clean-up Bond. Act of 1984 as a result of the <br /> presence of identified hazardous chemicals on airport grounds. <br /> The potential risk to humans from any identified chemicals <br /> will be calculated as a function of toxicity of the specific <br /> chemical substance , coupled with the level and duration of <br /> exposure. The exposure pathways to be considered are inhalation <br /> (fugitive dust) , direct contact (dermal exposure) , and ingestion <br /> (drinking water) . <br /> Development of sampling protocol will be coordinated with <br /> scientists within the. Toxic Substances Control Division of the <br /> California Department of Health Services . Risk assessments will <br /> be conducted by following the guidelines within the California <br /> Department of Health Services, "Decision Tree Manual". <br /> Sampling Program: <br /> 1 . Soil <br /> In order to evaluate a worst case exposure situation soil <br /> samples will be taken from Woodson Estate p r o p e r t y at <br /> locations immediately opposite the aircraft wash down area <br /> ( south side of Jahant Road at Frontage Road " T " <br /> intersection) , and immediately opposite the hazardous waste <br /> spillage/disposal site (West end of Runway 8/26) . A third <br /> sample site will be located immediately opposite the airport <br /> and between the two locations described above. <br /> 9517 Durango Way Elk Grove, CA 95624 (916) 685-5010 <br />