Which of the following organics will move the fastest with the groundwater? Which will move the slowest? Rank them from 1 (fastest) – 5 (slowest). Show all calculations to justify your answer. Assume the soils in the aquifer have an effective porosity of 0.25, a bulk density of 1.5 kg/L and contain 2% organic carbon. Compound Koc (mL/g) Benzene 83 Toluene 222.6 2,4,-D 39 Chlorobenzene 343 DDT 130,000

5 Problem: For a given inorganic soil, the following are known: Percentage passing No. 4 Sieve... 100 Percentage passing No. 200 sieve.. 77 Liquid limit Plasticity index.... ...... 63 25 70 CH or CL U-b RI40.73(L-20) MH -line OL PIOLL- CL-ML OF ML OH or OL 10 16 20 30 40 50 60 70 80 90 100 Liquid limit Classify the soil by using Unified Sqil Classification System. a) What type of soil is this? b) What is the group symbol of the soil C) What is the group name of the soil?

I need just the answer of (e) (i) Draw the flow curve and obtain the liquid limit (ii) What is the plasticity index of the soil? (iii) Determine the liquidity index of the soil if the natural water content is 29.5%.

2.28. A groundwater is being considered for use as a domestic supply. The water has a temperature 15°C and the following chemical analysis: CONSTITUENT Ca+2 Mg Nat Fe +2 Cd+ HCO3 SO4 CO3 NO3 CONCENTRATION. g/m³ 190 84 75 0.1 0.2 260 64 30 440 35 a. Use an anion-cation balance to determine if the sample analysis is reasonable. b. What is the hardness of the water? c. Determine the alkalinity of the water. d. Estimate the sample pH. e. Would the water be an acceptable domestic supply? Why or why not?

A silt clay soil has a plastic limit of 25 and a plasticity index of 30. 70 CH 60 CL U-b RI0.73(L 20) MH |-line OL OF CL-ML ML OH or OL 10 16 20 30 $0 60 70 80. Liquid limit 90 100 a. If the natural water content of the soil is 35%, what is the liquidity index? b. What type of soil is this using the USCS. c. What type of soil is this using the AASHTO system?

This is I'm uploading second time. If you don't know the solution please leave it but don't give me wrong solution.  Classify the soil, and give the group symbol and group name with clear explanation

Classify the soil by IS classification Given:- Liquid limit=22% Plasticity limit=19% Percentage passing through 4.75mm IS sieve=98.5% Percentage passing through 75 micron IS sieve=35% D60=0.22 D30=0.19 D10=0.16

Question 3. A DNAPLS substance was generated and released in a tire fire accident. A consulting firm was hired to carry out an assessment of the aquifer at the accident site. A subsurface plume of contaminant X was detected in the aquifer. The aquifer is located at a depth of 1300 m with a soil porosity of 34% and hydraulic conductivity of 41 m/d. The fraction of organic content in the soil is 1% and dry bulk density is 2000 kg/m3. Assume the Octanol-water partition coefficient of the substance, log Kow = 2.78.What is the Retardation factor (R) of DNALPS substance in this case? State your assumptions.

Question- A soil has liquid limit of 35, plastic limit of 20 and moisture content 25%. What will be its liquidity index and plasticity index?

Q#4:      Provide three applications of each in light of soil stability. Hydraulic conductivity                                              Liquid limit Plasticity index Moisture content Permeability Subject: Geotechnical Engg