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<br /> Soluble Threshold Limit Concentration (STLC) limits (in leachate extracts of solid samples) and/or
<br /> failing a fish bioassay(LC50)test.
<br /> 3) Non-Hazardous Waste—All analytes meet TCLP, TTLC, STLC and fish bioassay limits.
<br /> The number of historic data available vary by analyte and type of analysis (TCLP, STLC, TTLC), likely
<br /> reflecting the findings characteristically found in UPRR's wooden rail tie waste. A summary of the data
<br /> available is presented in Table 2.1 below.
<br /> Table 2.1 Chemical Analysis Frequency Summary by Analyte Type
<br /> Analyte • • Members TTLC (Solid) (Leachate)
<br /> Group - - Analysis
<br /> Analysis
<br /> Metals Antimony, Arsenic, Barium, Beryllium, All samples Rarely Rarely(1 sample
<br /> Cadmium, Chromium, Cobalt, (n=2315) (n=2-10)) for Chromium, and
<br /> Copper, Lead, Molybdenum, Nickel, Lead)
<br /> Selenium, Silver, Thallium,
<br /> Vanadium, Zinc
<br /> Pesticides 4,4'DDD/DDE/DDT, Aldrin, Infrequently Rarely(only Rarely(only
<br /> /PCBs Chlordane, Dieldrin, Endrin, (n=39) Chlordane, Chlordane, Endrin
<br /> Heptachlor+ epoxide, Lindane, Endrin and and Toxaphene,
<br /> Methoxychlor, Toxaphene Toxaphene, n=1-7)
<br /> n=1-5)
<br /> Semi- 1,4-Dichlorobenzene, 2,4,5/2,4,6- Infrequently Rarely Most samples
<br /> Volatiles Trichlorophenol, 2,4-Dinitrotoluene, (Pentachloro- (Pentachloro- (n=2070-2080)
<br /> Cresols (2, 3+4, 4 and/or total), phenol only phenol only
<br /> Hexachlorobenzene, n=70) n=13)
<br /> Hexachlorobutadiene,
<br /> Hexachloroethane, Nitrobenzene,
<br /> Pentachlorophenol and Pyridine
<br /> Under Title 22 of the California Code of Regulations (CCR), STLC (leaching)analysis is only required if
<br /> the TTLC (solid) concentration is higher than ten times the STLC limit, which explains the low number of
<br /> STLC results for most analytes (excepting infrequent analysis of chromium and lead). Semi-volatile
<br /> organic compounds (SVOCs)with the exception of pentachlorophenol have only TCLP limits, which is
<br /> why only TCLP analyses are typically performed for SVOCs.
<br /> A laboratory(Eurofins) summary of the applicable waste characteristic limits is provided in Attachment A.
<br /> In addition to the chemical analyses, a fish bioassay is required for waste classification in California. The
<br /> bioassay test was therefore performed on essentially all of UPRRs rail tie waste samples (n=2302).
<br /> All available data are provided in Attachment B, along with the interpreted waste classification result.
<br /> In addition to the rail tie waste data, UPRR provided analytical results for samples collected from new ties
<br /> (never installed) and corresponding untreated wood, treated with different preservatives (ALX, copper
<br /> 11183843Pol lack-1.dou 2
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