ARCHIVED REPORTS_XR0005829 CASE 1

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Mr Michael Infurna Project 20805-151-004 August 25, 2000 Page 3 ' On April 29, 1999, Pinnacle collected two soil samples from beneath the 10,000-gallon UST (UST 1) and three soil samples from beneath both of the 12,000-gallon USTs (USTs 2 and 3) for a total of eight samples Confirmation soil samples were collected at 16 feet bgs using an excavator bucket Pinnacle directed the excavator operator to remove soil from the bottom of the UST excavations The upper six inches of material within the bucket were removed, and a brass sample tube was driven into the soil The sample tube was sealed with Teflon° tape and plastic end caps and labeled with project number, sample designation, and sampling date The samples were placed in an ice chest ' and logged on chain-of-custody documentation As required by the SJCEHD, Pinnacle also collected 10 discrete soil samples (SP-1 through SP-10) from soil overburden removed to expose the USTs Samples were collected by removing the upper one foot of ' material and driving a brass tube Into the soil stockpile using a mallet Confirmation soil samples and stockpile samples were collected under the direction of Michael Kith of the SJCEHD Table 2 presents source of sail stockpile data IOn April 30, 1999, Pinnacle collected eight confirmation soil samples from beneath the product dispensers (D-1 through D-8) and 10 soil samples from beneath the product delivery lines (PL-1 through PL-10) Samples were collected under the direction of Matthew Parker of the SJCEHD Dispenser confirmation soil samples were collected at 2 5 feet bgs and product delivery line samples were collected at 2 5 to 3 5 feet bgs using percussion sampling equipment Samples were preserved as described above On May 7, 1999, Pinnacle collected six soil samples from beneath former USTs 2 and 3 at 17 feet bgs The UST complex was excavated to 17 feet bgs to place the three new USTs Samples were collected beneath the 16 feet bgs confirmation sample locations by driving a brass sample tube into undisturbed soil using a mallet Samples were preserved as described above The sample collected beneath the center of UST 2 (T-2-M) was not submitted for analysis Michael Infurna of the SJCEHD was on-site to observe the activities Pinnacle also collected three four-point soil samples (SP-11, SP-12, and SP-13) from the soil stockpile Samples were collected from the stockpiles as described above On May 11, 1999, overexcavation of the dispenser and product delivery line areas was performed by Gettler Ryan under the direction of a Pinnacle geologist Michael Infurna of the SJCEHD was on-site to observe the activities A backhoe was used to excavate 1 soil to depths ranging from 6 to 7 feet bgs beneath former dispensers D-3, D-6, and D-7, and to a depth of 4 feet bgs beneath former product line sample location PL-1 (see Figure 2) Soil samples were collected beneath the original sample locations Sidewall samples were also collected at locations D-3, D-6, D-7, and PL-I, however, the samples SAC\\\SACRFPI\COMMON\Consultmg\data\Shared\Projects\PJO\0805\08051510 4zz doe-Wit I (804141 00008)