ARCHIVED REPORTS XR0001384 - Laserfiche WebLink

Home Browse Search

r feasible at the site The radius of influence was approximately 25 feet at a flow rate of approximately 20 cubic feet per minute The vapor concentrations of total petroleum hydrocarbons as gasoline(TPHg) ranged from 3,300 to 30,000 milligrams per cubic meter (mg/m3) 2.0 SCOPE OF WORK A Site Specific Health and Safety Plan prepared in accordance with Occupational Safety and Health Adnumstration (OSHA) Standard 29 CFR 1910 120 was completed by SECOR for this site All personnel contracted for the field investigation were required to review and understand this plan In addition, Underground Services Alert was notified to safeguard that the trenching activities would not impact any subsurface utilities 21 Permitting In November 1993, an Interim Soil Remediation Work Plan prepared for the site was approved by the San Joaquin County Public Health Services, Environmental Health Division (PHS/EHD) After completing the required public notification process, an Authority to Construct Permit (No N-3139-1-0)was obtained from the San Joaquin Valley Unified Air Pollution Control District (SJAPCD) Prior to commencing work, a building permit was issued by the City of Stockton 22 Trenching and Underground Piping Installation Trenching and the installation of underground piping began at the site on September 19, 1994 To reduce the amount of concrete cutting at the site, subsurface piping was installed in the planters wherever possible Two separate trenches were required to complete the installation of the soil remediation system The first trench was positioned in the planter along the southern boundary of the site to supply gas and electric service to the treatment compound The second trench was located primarily in the planter along the eastern boundary of the site to convey 2-inch diameter Schedule 40 polyvinyl chloride (PVC) vapor extraction piping from each of the vapor . kb NO torr 2 Scptanber�i"6 lab No NOOOI.006.01