Laserfiche WebLink
3 <br /> Vince Bruscas <br /> June 24,2019 <br /> Page 4 <br /> All detections of volatile organic compounds and polycyclic aromatic hydrocarbons in <br /> soil boring samples were below their respective MTCA Method A or Method B _ <br /> standards. Volatile organic compounds were detected in one of three test pit samples <br /> analyzed for them. All detections were below their respective MTCA Method A or <br /> Method B standards. Polycyclic aromatic hydrocarbons were detected in all five test pit <br /> samples analyzed for them with two of forty-seven detections exceeding their respective <br /> MTCA Method A or Method B standards. A grab groundwater sample was collected <br /> from one soil boring and analyzed for gasoline,diesel,oil, arsenic, cadmium, chromium, <br /> r: <br /> lead, mercury,volatile organic compounds,and polycyclic aromatic hydrocarbons. There <br /> were no detections of gasoline, diesel,oil,cadmium, volatile organic compounds, or <br /> polycyclic aromatic hydrocarbons in the sample. Detections of arsenic, chromium, and is <br /> lead exceeded their respective MTCA Method A or Method B standards while the <br /> detection of mercury did not exceed the MTCA Method A standard. <br /> In January of 2018,three additional soil borings, eleven test pits, and four groundwater <br /> monitoring wells were installed on site. One to two soil samples were collected fiom soil <br /> each boring and analyzed for diesel, oil,and polycyclic aromatic hydrocarbons. Diesel <br /> and oil were detected in three of five soil samples with all detections being below the <br /> respective MTCA Method A standards. Polycyclic aromatic hydrocarbons were detected <br /> in four of five soil boring samples with one of four detections exceeding the MTCA <br /> Method A standard. Two soil samples from one soil boring were analyzed for six volatile <br /> organic compounds. One volatile organic compound(acetone)was detected at a <br /> concentration below its MTCA Method B standard. Three of four soil boring samples <br /> were analyzed for arsenic, cadmium, chromium,lead, and mercury. Cadmium was not <br /> detected in any of the three samples. All detections of arsenic, chromium, lead,and <br /> mercury were below their respective MTCA Method A standards. Two to four soil <br /> samples were collected from each monitoring well boring and analyzed for the same <br /> analytes plus gasoline. Gasoline was not detected in the one soil sample it was analyzed <br /> for. Diesel and oil were detected in three of six monitoring well samples with oil, but not <br /> diesel being detected in a fourth monitoring well sample. All detections of diesel and oil <br /> n <br /> were below their respective MTCA Method A standards. Polycyclic aromatic <br /> hydrocarbons were detected in four of six monitoring well samples with two of four <br /> detections exceeding the MTCA Method A standard. Two monitoring well soil samples <br /> were analyzed for arsenic, cadmium, chromium, lead,and mercury. Cadmium was not r <br /> detected in either sample. All detections of arsenic, chromium,lead,and mercury were <br /> below their respective MTCA Method A standards. Gasoline was not detected in the one '! <br /> test pit soil sample that it was analyzed for. Diesel and oil were detected in one of <br /> sixteen test pit soil samples with oil being detected in a second test pit soil sample. All <br /> E <br /> detections were below their respective MTCA Method A standards. Polycyclic aromatic k <br /> hydrocarbons were detected in four of seventeen test pit soil samples. All detections <br /> were below their respective MTCA Method A or Method B standards. ry <br /> 4 <br /> A <br /> 1 <br /> 1 <br />