WORK PLANS - Laserfiche WebLink

Home Browse Search

Limited Phase II Subsurface Investigation Work Plan Limited Phase II Subsurface Investigation Work Plan 2551 South Airport Way 26515outh Airport Way Stockton, California 95206 Stockton,California 95206 4A Soil Gas Probe Installation and Sampling for samples taken during the course of work. The number and location of samples are chosen to The four soil boringswill be completed as temporary provide requested information, but it cannot be assumed that they are entirely representative of p po ry gas probes. The probe will be constructed all areas not sampled. All conclusions and recommendations are based on these analyses, using 0.25-inch diameterTefion tubing connected to a 1-inch plastic probe tip. The probe tip will observations, and the governing regulations. Conclusions beyond those stated and reported be placed in the middle of an annular filter pack composed of Lonestar No. 3/12 sand placed herein should not be inferred from this document These services and any planned work will be between 4.5 and 5.5 feet bgs. The probe will then be sealed with a 1-foot layer of dry granular performed in accordance with generally accepted practices in the environmental engineering and bentonite followed by hydrated granular bentonite to grade. Water will be added at the surface geology fields that existed at the time and location of the work. No other warranty, either to hydrate the upper portion of the granular bentonite to ensure proper sealing dudng sampling expressed or implied, has been made. activities. If there are any questions regarding our investigation, please do not hesitate to contact AEI at Sampling of soil gas will be conducted by vacuum testing and purging the wells and by using helium 858-531-6297. as a tracer compound. The soil gas samples will be collected through a calibrated flow controller and into one-liter laboratory-supplied evacuated canisters. Soil gas samples will be analyzed for Sincerely, VOCs using US EPA Testing Method TO-15. AEI Consultants 4.5 Boring Destruction Following completion of sample collection and removal of tooling, the boringswill be backfilled 1a with eatrL cemem grout as required by the permitting agency and completed at the surface with �" , P•G.8516 —[L'ifl3F`h Senior Geologist concrete the surrounding conditions. AEI Consultants 4.6 Investigation Derived Waste 2500 Camino DiabloWalnut Creek, California 94597 Phone: 925-746-6000 Upon completion of the work,investigation-derived waste will be left on-site,pending appropriate Fax: 925-746-6099 disposal. Removal and transport of the waste(s) to an appropriate disposal facility can be arranged and implemented upon client approval. Attachements: 5.0 Estimated Schedule Figure 1:Site Map Completion of this work is contingent upon approval of this work plan, receipt of approved drilling permits,and pending subcontractor availability. Work will be scheduled upon review of this work plan by San Joaquin County Department of Environmental Health. It is expected that sample collection will occur shorty thereafter. Laboratory analytical results will be available within approximately 2 to 3 weeks following the sample collection. 6.0 Reporting This work will be performed under the oversight of a licensed professional. A final report will be prepared following the receipt of analytical data. The report will detail the investigation methods along with the analytical results and boring logs. The results will be compared to the Environmental Screening Levels which are Issued by the Regional Water Quality Control Board. 7.0 Limitations This work plan presents a scope of work by AEI Consultants. This work plan may include observations and descriptions of site conditions. Where appropriate, it includes analytical results