Laserfiche WebLink
San Joaquin County <br /> Environmental Health Department DIRECTOR <br /> Linda Turkatte,REHS <br /> ? 1868 East Hazelton Avenue <br /> Stockton, California 95205-6232 PROGRAM COORDINATORS <br /> Robert McClellon,REHS <br /> Jeff Carruesco,REHS,RDI <br /> Website: www.sjgov.org/ehd Kasey Foley,REHS <br /> Phone: (209)468-3420 Rodney Estrada,REHS <br /> Fax: (209)464-0138 Adrienne Elisaesser, REHS <br /> April 9, 2015 <br /> Mr. Cyrus Youssefi Mr. Joe Mulligan <br /> 601 Main Street Investors PTP Supervising Real Property Agent <br /> 1006 Fourth Street, Suite 701 City of Stockton — Economic Development Dept. <br /> Sacramento, California 95814 425 North EI Dorado Street <br /> Stockton, California 95202 <br /> Subject: Main Street Investors/Villas de Amistad <br /> 601 East Main Street <br /> Stockton, California 95202 <br /> San Joaquin County Environmental Health Department (EHD) has received and reviewed <br /> Additional Site Assessment and Vapor Intrusion Investigation Report (report), dated 12 <br /> December 2014, prepared and submitted by your consulting firm, Advanced GeoEnvironmental, <br /> Inc. (AGE), on your behalf for the above-referenced site. In the report, AGE presented boring <br /> logs and chemical analytical data from three borings (B4 through B6) advanced off-site. <br /> Contaminants of concern were not detected in any of the soil samples collected from the three <br /> soil borings advanced to approximately twenty feet below surface grade (bsg). However, <br /> benzene concentrations were detected at 380 micrograms per cubic meter (Ng/m3) and 360 <br /> pg/m3 in soil gas samples B4-V and B4-V-DUP, respectively. These concentrations exceed the <br /> criteria listed in Low-threat Underground Storage Tank Case Closure Policy (LTCP) for <br /> residential and commercial property when soil gas oxygen concentrations are unknown or are <br /> less than four percent. The current data would pass the LTCP vapor intrusion criteria if soil gas <br /> oxygen content was known to equal or exceed four percent. <br /> Due to the results from the soil gas investigation, the EHD directs that a work plan be submitted <br /> to collect additional soil gas samples at five feet bsg from a boring advanced adjacent to the <br /> hotel between the former underground storage tank area and borehole B4. Report the percent <br /> of oxygen in the soil gas samples and analyze soil gas samples for total petroleum <br /> hydrocarbons as gasoline (TPH-g); benzene, toluene, ethylbenzene and total xylenes (BTEX); <br /> and naphthalene by Environmental Protection Agency (EPA) Method TO-15, and TPH as diesel <br /> (TPH-d) and naphthalene by EPA Method TO-17. <br /> Please clarify whether the hotel basement at this site is occupied by residents. If you have any <br /> questions or concerns, please contact Vicki McCartney at (209) 468-9852 or by email at <br /> vmccartney@sjcehd.com. <br />