COMPLIANCE INFO - Laserfiche WebLink

Home Browse Search

Limited Soil Sampling Work Plan 0 1080 Wildlife Avenue C:) Stockton,California a me a g ro u p Antea Group Project No.UPR8298B Previous site investigations confirm chemical contaminants are present in soil and/or groundwater at the site. • The site has included railroad operations since at least 1937 to present. Rail yard operations historically include the use of varied hazardous materials such as degreasing solvents, polychlorinated biphenyl (PCBs) from engines, heavy metals, petroleum hydrocarbons and creosote from railroad ties, which can result in surface and subsurface impacts. • Historically,railroad ties were treated with creosote,which is a distillate of tar,and arsenic. Creosote can leach from railroad ties resulting in soil and/or groundwater contamination. This is a recognized environmental concern based on the age of the facility,the railroad ties historically used,and practices of burying railroad ties at the subject property. • During the site reconnaissance, Antea Group observed signage indicating that 4,4'-dichlorodiphenyltrichloroethane (DDT) was historically used at Navy-designated Parcel 176. User- provided information and additional information on the State's GeoTracker database further confirms the historic use of DDT in various locations along the western-most portion of the Rough and Ready Island. According to the Port of Stockton,DDT has not been used on the property since the 1970s. 3.0 SCOPE OF WORK Antea Group proposes to advance 27 soil borings(131 through 1327)throughout the site area(Figure 2)where construction contractors may be affected by PECs identified in Antea Group's Limited Phase I ESA. 3.1 Pre-field Activities Antea Group has prepared a Health and Safety Plan (HASP) in accordance with Title 8, Section 5192 of the California Code of Regulations. The HASP(Appendix A)contains a list of emergency contacts,as well as a hospital route map to the nearest emergency facility. All field personnel will conduct a daily review of the HASP and modify it with any site-specific updates or changes in conditions. Prior to drilling, Antea Group will mark all proposed soil boring locations and will contact Underground Service Alert North(USA)to clear the boring locations of public-owned underground utilities. In addition,Antea Group will contract an independent locating service to clear the boring locations of private subsurface features or other obstructions. Also prior to subsurface soil sampling, Antea Group will obtain all necessary permits and approvals from the San Joaquin County Environmental Health Department (SJCEHD), which should follow submittal of the following documents to SJCEHD: 1) Well& Boring Permit Application; 2) Well& Boring Permit Application Supplemental (Licensed Contractors Declaration,or"LCD"); 3)Master File Record Information, or"MFR";4)applicable fees; and 5)this Limited Soil Sampling Work Plan. 2 www.anteagroup.com