Laserfiche WebLink
Ui <br /> SJCEHD USPS's Stockton Vehicle Maintenance Facility Work Plan . <br /> dispenser conveyance.piping.,and similarly angled. Samples from this boring will be . <br /> collected from'approximately 10 feet`.beneath the dispenser,conveyance-piping and from <br /> .approximately 154eet-beneath the.diesel fuel dispenser. .The: approximate boring _ <br /> locations and a typical angled boring diagraih-are.shown ori.Figures i and 2,--respectively. <br /> The subsurface investigation will be conducted using atruck-mounted drill rig equipped <br /> with 8-inch hollow-stem augers. Soil.samples.will be collected using a split spoon <br /> sampler. <br /> The.soils sampled.at approximately .5-foot intervals_will.be logged using the Unified Soil., <br /> Classification System (ASTM-D-2487). Soil vapors from each sample will.be monitored <br /> with an organic vapor.meter-(OVM). The soil will be placed in a .ZiplockTm bag for several <br /> minutes; the bag then will be pierced with;the OVM-probe in order to record the organic <br /> vapor levels present. <br /> Soil samples for laboratory analysis will be collected in brass liners. The ends of the liners <br /> will be'covered in.aluminum foil or Teflon film,_fitted with plastic end caps, taped, and <br /> labeled with a unique identification number: The samples then-will be placed in an ice- <br /> chilled cooler and transported to,a-state-certified analytical laboratory with chain of <br /> custody documentation. <br /> Closure-PUn-for the Underground Motor Oil and Waste Oil Piping <br /> Mr. Rollo Stephenf with Ramcon Engineering.'and Environmental Contracting, Inc. was <br /> ..contacted in order to determine the protocol utilized to abandon the underground motor <br /> oil and waste oil underground piping.that was left in-place. Mr. Stephenf.indicated that <br /> the underground piping was triple rinsed, cut, and capped. <br /> To-evaluate soil quality beneath the left:•in-place piping, our field engineer or scientist will <br /> sample four exploratory borings,(approximately-one boring per 20 feet of piping). A <br /> private-utility locator will be.utilized to locate the underground.piping: The boring <br /> .locations will be.cored and hand sampling equipment will be utilized.to collect samples <br /> from-approxiniately 2:feet beneath the piping. The boring locations are also shown on <br /> Figure 1. <br /> Laboratory Analyses <br /> Based on .field observations and'OVM readings, selected soil samples from each boring <br /> will_b analyzed'at-a. state.certified laboratory. The laboratory analytical plan is presented. <br /> in the table below. All arlalyses will be performed on a standard one-week-laboratory <br /> response time. <br /> No.of ' No.of S S LUFf <br /> Burin Location I Burin samples TPH I. TPHd_-. BTEX I O 's' .TRPH Metals*' I VOCs <br /> Test Method: I E I 8015M I 8015M 1 ' 8020 .1 8260 I ,<418.1 I 6010.- 8010 ._ <br /> Gasoline USTs 1 2- <br /> -Diesel <br /> Diesel UST 1 . 2; ✓ ✓ ✓ ✓ <br /> Motor Oil UST 1 2 ✓ ✓ <br /> Waste Oil UST 1 2 ✓ ✓ ✓ ✓ ✓ ✓ ✓ <br /> Diesel Dispenser 1 2 ✓ ✓ ✓ ✓ <br /> and Pipin <br /> Waste.Oil�>ing 3 3 ✓ ✓ ✓ ✓ ✓ ✓ ✓ <br /> Motor 0i1 Piping .1. 1.. . ✓ ✓ ✓ <br /> -5.fuel oxygenates - MTBE,DIPS, ETRE, TAME, and TBA <br /> *`�5 L�UFFf Metals= Cadmium, Chromium_, Lead, Nickel, Zinc <br /> U"V EIVASSCOATES Page 2 <br /> { Environmental/Geotechnical/Engineering Services- 864-76 <br /> r <br /> 1 <br />