|
Site Background Information: Larry's Auto
<br /> AGE-NC Project No. 95-0184
<br /> Page 4 of 8
<br /> between 113 feet and 117 feet bsg, between 131 feet and 135 feet bsg, between
<br /> 158 feet and 162 feet bsg, and between 187 feet and 191 feet bsg;
<br /> • CPT-5 was sampled between 63 feet and 67 feet bsg, and between 104 feet and
<br /> 108 feet bsg;
<br /> • CPT-6 was sampled between 63 feet and 67 feet bsg, between 113 feet and
<br /> 117 feet bsg, between 159 feet and 163 feet bsg, between 176 feet and 180 feet
<br /> bsg, and between 187 feet and 191 feet bsg;
<br /> • CPT-7 was sampled between 71 feet and 75 feet bsg, between 81 feet and 85 feet
<br /> bsg, between 109 feet and 113 feet bsg, between 134 feet and 138 feet bsg,
<br /> between 159 feet and 163 feet bsg, and between 180 feet and 184 feet bsg;
<br /> • CPT-8 was sampled between 63 feet and 67 feet bsg, between 104 feet and
<br /> 108 feet bsg, between 126 feet and 130 feet bsg, between 159 feet and 163 feet
<br /> bsg, between 178 feet and 182 feet bsg, and between 189 feet and 193 feet bsg;
<br /> and
<br /> • CPT-9 was sampled between 66 feet and 70 feet bsg, between 113 feet and
<br /> 117 feet bsg, between 153 feet and 157 feet bsg, between 180 feet and 184 feet
<br /> bsg, and between 186 feet and 190 feet bsg.
<br /> Soil samples were collected from specified depth intervals (zones) based on the acquired
<br /> CPT lithologic data indicating favorable conditions for sampling. Soil samples were
<br /> collected from CPT boring locations at the following intervals:
<br /> • CPT-7 was sampled between 59 feet and 60 feet bsg; and
<br /> • CPT-8 was sampled between 154 feet and 155 feet bsg.
<br /> Soil descriptions from the computer-generated CPT lithologic logs were integrated with
<br /> previous subsurface soil descriptions and the hydrocarbon impact to ground water and soil
<br /> was quantified by laboratory analysis of the ground water and soil samples.
<br /> Generally, silt, clay, clayey silt, silty clay, sandy silt, silty sand, and sand were encountered
<br /> from 5 feet bsg to approximately 100 feet bsg; one soil sample, collected at 60 ft bsg in
<br /> boring CPT-7, was described as a greenish-brown coarse sand. A distinctive interval
<br /> consisting primarily of sand, silty sand, sandy silt, and gravelly sand, as well as some silty
<br /> clay, clayey silt, and silt, was identified at depths between approximately 100 feet and
<br /> 140 feet bsg. From 140 feet bsg to the total depths of the borings clayey silt, silty clay, silt,
<br /> cemented sand, sand, silty sand, sandy silt, and gravelly sand were identified; one soil
<br /> sample, collected at 155 feet in CPT-8, was described as a dark gray sandy silt.
<br /> Advanced CeoEnvironmental,Inc
<br />
|