This is Environmental Engineering:

What is acid rain and how is it formed? (10pts)

What is the difference between Mineral Acidity and Carbon Dioxide Acidity? (10pts)

What is the difference between Phenolphthalein Alkalinity and Total Alkalinity? (10pts)

Analyze the Control mechanisms used in a (Water and diesel transportation projects) :

How do (if any) the control system works (design)?

Explain the purification measures for groundwater pollution. Cadmium groundwater contamination was found in wells of multiple houses distributed in the plains. What kind of investigation plan do you make to elucidate this pollution mechanism? Explain the outline of your plan.

As part of the development of the one district, one factory programme, a catchment of size 100 km2 has been marked for vegetation. In its original condition, the average annual total runoff from the catchment is 1.1 m3/s. The average annual rainfall is 800 mm/a. In an average year, 50% of the rainfall infiltrates and 12.5% of the rainfall reaches the groundwater. Tests have turned out that the average annual evapotranspiration from the unsaturated zone (being the sum of the transpiration and the bare soil evaporation) amounts to 340 mm/a. In all water balance computations over the year, one may assume that the storage effects are small (dS/dt = +0).
a. How much water, in mm/a, reaches the root zone through capillary rise in an average year?
b. How much water, in cm/a, seeps out from the groundwater to the surface water in an average year?
c. How much water, in l/a, evaporates directly from interception in an average year?
d. How much, in m/a, is the total evapotranspiration in the catchment in an average year?
A well field is planned to withdraw 0.16 m3/s from the catchment for drinking water consumption elsewhere. As a result, the groundwater level is expected to go down and capillary rise into the root zone will no longer be possible. The percolation, however is expected to remain the same.
e. What will be the effect of the withdrawal on the different components of the hydrological cycle: the groundwater seepage, the total runoff, the evapotranspiration from the unsaturated zone and the total evapotranspiration? Please quantify in mm/a.

A. Calculate the price of pit-run gravel delivered to the site per cubic yard (bank measure) based on the following data: The pit is located 10 miles from the site. Trucks cost $43.75 per hour including fuel and maintenance; they have 12 cubic yards (loose material) capacity and travel at an average speed of 30 miles per hour. The swell factor for this material is 15%. Trucks take 5 minutes to unload at the site. The loader costs $82.50 per hour and loads material at the pit at the rate of 40 cubic yards per hour. The truck driver’s wage is $45.00 per hour, and the equipment operator’s wage is $54.00 per hour.

I need answer for Ati Teas reading on White House solar panel

A democracy is a government by the people. If you do not engage in the political process, are you a good citizen? If the majority of citizens do not participate in the political process, is it still a democracy?

1) What are folds? Draw two types of folds or insert pictures of real folds. 2) Define a joint and what are some properties of joints? 3) What is a joint set? Insert a picture of a joint set in an area 4) How is fault different from a joint? Draw types of faults. 5) What is an earthquake? Briefly define Elastic Rebound Theory 6) Energy is released during an earthquake. In what types of waves the energy travels? 7) What are differences between the two types of waves? 8) What is the difference between epicenter and hypocenter? 9) What are two main differences that you will note in a seismogram recorded at two stations located at different epicentral distances? 10) Which two main scales can represent the size of earthquake? What is the main difference between the two?

Pleas write me a perfect report for the following sentence :

1. What are the procedure for an investigation in police station.

and including:
Summary , List of content, Instroduction, Main Body, Discussion, Conlusion, Refrence

once a project is under construction, what level of inspections are required during the various phases of construction?

describe the overview of water and hygiene in middle income areas.( not less than 250 words)

Hi I need Stress Strain Graphs to be made for the following data tables. There should be 3 graphs, one for each table. I also need to know what material each sample is made of. I assume this is calculated from calculating the Modulus of Elasticity E. However I do not really know. I appreciate everything. The data tables are below this post.

Include the Following

• Stress Strain graphs for each sample showing what variable and unit you have on both axes, and stating if it is sample 1, 2 or 3. Show the points in the graph and additionally a trendline.
• Explain how you got your conclusion (i.e., show your work) including how it was calculated/how you got it, what value it had and what you compared with.
• Your conclusion of what each of the three samples are made of.  

For many years, snow removed from the campus roads and parking lots has been located to the field next to the river. The plowed snow has a relatively high salt content due to the application of road salt (NaCl) during the winter to keep the campus roads safe. NaCl quickly dissociates in water, resulting in sodium (Na⁺) and chloride (Cl^-) ions. The US EPA recommends that the chloride content in remain below 230 mg/L to maintain healthy freshwater aquatic ecosystems.

Assume the following:

• Chloride is a non-reactive pollutant
• The Raquette River has a chloride concentration of 50 parts per million by mass

(note: 50 ppm chloride by mass = 50 grams chloride per 10⁶ grams water; the density of water is 1 g/cm³, 10³ cm³ = 1 L)

• The Raquette River has an average flowrate of 1500 ft³/s
• The runoff from the field has a chloride concentration of 5000 ppm by mass
• The flowrate of the runoff from field during an average storm is 20 ft³/s
• At the point of discharge from the field, the width of the river is 1000 ft, the depth is 5 ft, and there is near instantaneous mixing within 200 feet downstream of the field.

1. Draw a mass balance diagram for this system.
2. Calculate the chloride concentration of the river just downstream of the field one hour after an average rainstorm begins.
3. Is your estimate for the chloride concentration in the river just downstream of the field above the EPA limit of 230 mg/L chloride? Show your calculations for the comparison.
4. Name one fundamental assumption you needed to make to apply the mass balance approach to this problem. Is this a reasonable assumption? Briefly explain why or why not.

ENMA 480: ETHICS AND PHILOSOPHY FOR ENGINEERING APPLICATIONS

Chairman   Rogers   of   the   Challenger   Accident   Investigation   asked   Bob   Lund:   “Why   did   you  
change   your   decision   [that   the   seals   would   not   hold   up]   when   you   changed   hats?”   What   might  
motivate   you,   as   a   midlevel   manager,   to   go   along   with   top   management   when   told   to   “take   off  
your   engineering hat   and   put   on   your   management hat”?  

Applying   the   engineering-as-experimentation   model,   what   might   responsible   experimenters  
have   done   in   response   to   the   question?

A certain city has a population equivalent to 123456 treatment plant which will serve the community until 2040

. a) Estimate the future population of this city in 2020 and 2040 using constant percent method if the rate constant is 0.0327 /year.

b) Determine the water and wastewater treatment plant design capacities for the period of 2020 to 2040. Use maximum (fmax) and minimum (fmin) factors of 2 and 0.5, respectively (Qmax = fmax Qavg and Qmin = fmin Qavg). Assume an average of 200 L/capita-day is the water consumption rate for the city in 2010 and 80% of the consumed water is collected as wastewater. What is the maximum hourly flow?

c) Determine the daily fire protection water requirement in 2020 and 2040?

d) Estimate the size of a tank for the water treatment plant that can store the raw water for 7 day. Take the depth as 3 m. What would be removal percentages of viruses (diameter = 50 nm) and bacteria (diameter = 1 μm) by this tank? Assume the specific gravity of each micro-organism is 1.05 and the water temperature is 20°

e) Estimate the size of equalization tank for the wastewater treatment plant that can hold the raw sewage for 4 hours. Take the depth as 3 m. What would be the size of the smallest particle size with specific gravity 2.0 that can be 100% removed by this tank? Assume that the water temperature is 20°C