The aquatic ecosystem criterion maximum concentration (CMC) [acute surface-water toxicity limit] for copper at micrograms per liter (ug/L). Provide your answer to one decimal place surface water site SB-4 is
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![The aquatic ecosystem criterion maximum concentration (CMC) [acute surface-water toxicity limit] for copper at
surface water site SB-4 is
micrograms per liter (ug/L). Provide your answer to one decimal place
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- A service laboratory developed a testing procedure for the determination of four heavy metals in drinking water. The laboratory considers extending the test scope to cover environmental waters. In this situation, the limits of detection of (LOD) and quantification (LOQ) of the method should only be revised. True or Flase?The five most important green house gases in terms of quantity are carbondioxide,methane,sulphur dioxide ,nitroxides and chloro fluoro carbonates. True or falseThe maximum biomass of fish that can be produced in static water without aeration depends on the quality and quantity of ration that can be put into the pond daily. Discuss
- The organophosphate Azinphos-methyl has a96-hour LC50 value of 3 ppb for rainbow trout. Inan unfortunate incident, 200 g of this pesticidewas sprayed on a field, and a subsequent heavyrainfall washed 35% of it into a nearby lakehaving a surface area of 30,000 m2and anaverage depth of 0.5 m. Would the pesticideconcentration in the lake water have beensufficient to kill a significant fraction of therainbow trout in the lake?The table below shows the water quality results of palm oil mill effluent (POME)which you have analyzed in your laboratory. You are given a task to proposemitigation options for the palm oil mill after interpreting the findings. Interpretthe characteristics of POME and its potential effect on the aquatic system to helpyou in designing the mitigation options. Parameters Value Department of Environment (DOE) Limit pH 3.4 - 4.8 5 - 9 Biochemical Oxygen Demand (BOD) (mg/L) 25,000 - 43,750 100 Chemical Oxygen Demand (COD) (mg/L) 80,000 - 100,000 100 Oil and Grease (mg/L) 4,000 - 5,000 10Derive a general expression for the minimum filter area requirement per a sterility assurance limit (SAL) in terms of(a) concentration of microorganisms in the feed; (b) volume per unit parenteral dose; (c) sterility assurance limit; and (d) filter capacity.
- Source: http://www.hrrsa.org/tours/virtual-tour Questions refer to the treatment of the solid waste. please solve 1 and 2. Why is it important to monitor and remove the majority of the nitrogen from the waste water? Why is it important to monitor and remove the majority of the phosphorus from the waste water?True or false? only water or dilute aqueous solutions or non-toxic chemicals may be disposed of down the drain with copious water. when coming to the aid of laboratory accident victim, you should evaluate the situation first before rushing in.Assume that you are running a desalinization plant and would like to ensure that your project is needed for a sustainable water supply. Answer all the questions in the table in the next page Identify two key negative environmental impacts that may be associated with this project. (SOLO 2- Uni-structural) Predict and evaluate the significance of the impacts on the Construction, Operation, and Decommissioning phase of the project by rating in the scale of -3 to 0 as mentioned in Part 2 of the video. (SOLO 2- Uni-structural) Synthesize your evaluation of significance. Refer to Parts 1 and 2 of the videos. (SOLO 5-Extended abstract; Word limit: 600 words: 300 words for each negative impact) Suggest possible mitigation measures that you could make or steps you could take for the two negative impacts. (SOLO 2- Uni-structural)
- fill in the volumes required to make the various dilutions of Coomassie Blue and their respective concentrations. show sample calculations.A water quality control board reports that water is unsafe for drinking if the proportion of nitrate concentration exceeds 21% ppm. Water specimens are taken from a well. ?o: ??:The phenol concentration of wastewater was determined from three (3) parallel determinations, giving a mean of 0.513 μg L-1 and a standard deviation of 0.05 μg L-1. Decide at a risk level of 5% (or a confidence level of 95%) whether a reference value of 0.520 μg L-1 is statistically different.