Laserfiche WebLink
SAN J OAQ U A Environme A Health Department <br /> COUNTY Linda Turkatte, REHS, Director <br /> Kasey Foley,REHS,Assistant Director <br /> PROGRAM COORDINATORS <br /> Robert McClellon, REHS <br /> Jeff Carruesco, REHS, RDI <br /> Rodney Estrada, REHS <br /> Willy Ng,REHS <br /> Muniappa Naidu,REHS <br /> August 14, 2017 <br /> Walt Luihn <br /> Environmental Compliance/Safety Officer <br /> South San Joaquin Irrigation District <br /> 11011 East Highway 120 <br /> Manteca, California 95336 <br /> Subject: Draft Lead Assessment and Soil Relocation Work Plan <br /> 25187 East River Road, Escalon, California <br /> The San Joaquin county Environmental Health Department (EHD) has reviewed the draft Lead <br /> Assessment & Soil Relocation Work Plan (work plan) dated July 5, 2017, prepared by Blankinship & <br /> Associates, Inc. and has the following comments for your consideration. <br /> 1. During a phone conversation between you and Linda Turkatte, Director of EHD, it was indicated <br /> that the results of the sampling of water in the irrigation canal this growing season showed that the <br /> water is not impacted from the lead shot inside the canal. Based on this discussion, it was agreed <br /> that a full and adequate site assessment can be conducted this fall, with removal activities to be <br /> conducted in 2018. A report of the site assessment and a soil removal/relocation and sampling <br /> work plan, based on the results of the site assessment activities, shall be submitted to the EHD for <br /> approval prior to commencing that scope of work. <br /> 2. During the April 2017 site visit, lead shot pellets were visible in the area west of the railroad <br /> crossing and outside of the assessment grid provided in the work plan. Please address the site <br /> assessment of this area. <br /> 3. The proposed 50 ft x 50 ft sampling grid is acceptable for preliminary site assessment only. <br /> However, a minimum of one confirmation sample for every 25 ft x 25 ft square grid shall be taken <br /> in the excavated area after the removal of contaminated soil. <br /> 4. The EHD agrees that soil with results over 50 mg/kg for the Total Threshold Limit Concentration <br /> (TTLC) for lead should be tested for the Soluble Threshold Limit Concentration (STLC) to determine <br /> if the soluble concentration equals or exceeds the 5 mg/I threshold. However, the 50 mg/kg TTLC <br /> result does not itself indicate an exceedance of the TTLC concentration for a hazardous waste, <br /> which is 1000 mg/Kg. <br /> 5. Please clarify the constituents of concern to be analyzed for and the test method appropriate for <br /> each constituent of concern. <br /> Please submit an addendum to the work plan to clarify the new scope of activities and to address the <br /> items noted above. Please also include the irrigation canal water sampling results. <br /> 1868 E. Hazelton Avenue I Stockton, California 95205 1 T 209 468-3420 1 F 209 464-0138 1 www.sjcehd.com <br />