Metals. Metal analyses were conducted on soil and groundwater. In only one case did the metals exceed the State TTLCs that classify soil as hazardous waste for disposal purposes (Marshack, 1988): refuse subsurface soil sample 7A had a detected value of 3000 ppm lead. Two prior Levix-Xxxxxx xxxsurface soil samples (one panhandle and one non-refuse fill area) had detected elevated lead concentrations of 3800 ppm and 2000 ppm McLaren's groundwater analytic results for metals were consistent with Levixx-Xxxxxx'x xxxults. Although the water is brackish at the site, and therefore unsuitable for drinking, the metals detected in the shallow groundwater were generally below California's Maximum Contaminant Levels (MCLs) for drinking water (CDHS, 1989). Only a few metals slightly exceeded the MCLs. McLaren's surface water analytic results for metals did not demonstrate any elevated levels.
Metals. Three metals (copper, lead and zinc) in the LWG sediment trap sample exceeded the Toxicity SLV but exceedances are low, generally less than 2 times the SLVs (Figure 3). These metals are covered under DEQ’s industrial stormwater permits (NPDES), which permit sites to discharge metals in stormwater at concentrations exceeding JSCS SLVs. In the western branch, one sample location (AAP912) had high arsenic, cadmium, and zinc. Two sites could affect this location: Chevron Asphalt and Xxxxxxxxx-Xxxxxxxxx. The solids that were sampled may reflect historical discharges from these sites, though source control measures implemented at the Xxxxxxxxx-Xxxxxxxxx site in 1996 may have reduced contaminant loading during the period between 1996 and when the sample was collected in 2003. The low volume of solids observed in the manhole (~ 1/8 inch) in 2003 and the fact that the LWG sample did not have high arsenic or cadmium concentrations supports that these legacy solids do not appear to be affecting current discharges. In the eastern branch, the most significant sources appear to be those connected directly to the Xxxxxxxxx storm line. The south and north private lines show elevated metals. Most sites connected to these lines have been identified in ECSI but have not conducted stormwater evaluations. It is not clear if the elevated metals are legacy or from current discharges. The high silver concentrations, traced to an illicit connection from a photoprocessor in 2000 and which was rerouted to sanitary in 2000, suggest that at least some of the contaminants in the line are from historic discharges. DEQ is currently working with one of the sites connected to these lines and the City has requested that DEQ facilitate line cleaning as part of this upland investigation. The other likely source of metals is the Calbag-Front site. The City only had sufficient volume to analyze for PCBs at the site, which showed high concentrations (630 - 2,360 µg/Kg). Because metals and PCBs were both site contaminants, it is presumed that elevated metals also continue to discharge to the City system. The City has requested that DEQ reopen this cleanup site to address these ongoing sources. The elevated metals detected in 2003 just upstream of manhole AAP918 are significantly greater than metals detected in 2007 at manhole AAP918. The City’s storm line was cleaned from manhole AAP918 to the Calbag lateral in 2005 as part of the site remediation implementation. Therefore, these 2003 results are...
Metals. The Metals Adjustment shall be calculated and applied separately for all Products ordered for delivery during each Period using the business day immediately preceding the date Federal releases the Binding Order as the measuring date (“Measuring Date”). The Product Price will apply to all Binding Orders and Additional Orders for Products ordered for delivery during the entire applicable Period.
Metals. A. Partition framework, except as otherwise indicated, shall be of 4” nominal stud construction.
Metals. Structural steel, steel forgings, steel castings, stainless steel, and other metal materials used for fabrication shall conform to the requirements shown and specified herein and in Section C2 - FABRICATION OF HYDRAULIC STEEL STRUCTURES and/or C3 - METALWORK FABRICATION, MACHINE WORK, AND MISCELLANEOUS PROVISIONS.
Metals. The maximum allowable concentration in milligrams per litre of metals shall be as stated in Table 2. Table 2 - Metals Element Maximum Allowable Concentrations Milligrams Per Litre Aluminium 10 Beryllium 0.2 Boron as B 1.0 Cadmium 0.05 Chromium (Total) 0.5 Cobalt 0.5 Copper 0.1 Iron 10 Lead 0.3 Manganese 0.4 Mercury 0.001 Molybdenum 0.05 Selenium 0.03 Silver 1 Nickel 0.5 Tin 0.5 Zinc 0.3 Total Heavy Metals (not including Iron) 10
Metals. Iron and steel shall generally be painted of galvanized or metal- sprayed as appropriate. Indoor parts may alternatively have chromium or copper-nickel plantings, or other suitable protective finish. When it is necessary to use dissimilar metals in contacts, these shall so selected that the potential difference between them in the electrochemical series is not such as to cause galvanic corrosion. If this is not possible, the contact surface of one both of the metals shall be electro-plated or otherwise finished in such a manner that the potential difference is reduced within the required limits or, alternatively, the two metals shall be insulated from each other by a suitable insulating material or a coating of varnish compound.