Further, the body must also react with internal forces at all points between the hand and the foot. = 7r! What piece of advice would you offer a recent engineering grad? New York: Wiley, 1982, p. 512. Expected Values Let X be a discrete random variable having a probability mass function f (xk), k = 1, 2,, n The expected value of X is defined as n = E 6 X @ = ! The copper action level is exceeded if the concentration of copper in more than 10 percent of tap water samples collected during any monitoring period conducted is greater than 1.3 mg/L (i.e., if the 90th percentile copper level is greater than 1.3 mg/L). Pe Environmental. Most likely, that ideal job youre imagining doesnt truly exist. Elementary Fluid Mechanics, 6th ed. The exam appointment time is 9 hours and . File Type PDF Ncees Pe Environmental Sample Questions And Solutions . I write my books to hold all the knowledge an engineer needs to know to be competent in their profession. The number of different permutations of n objects taken n at a time, given that ni are of type i, where i = 1, 2, , k and ni = n, is P _ n; n1, n2, f, nk i = n! We recommend 200 to 300 hours of study time in order to prepare for the PE exam. RESPONSE NO THRESHOLD LINEAR AT LOW DOSE DOSE CARCINOGENIC DOSE RESPONSE CURVE 2018 NCEES 124 Chapter 5: Environmental Health and Safety Threshold Value TLV is the highest dose (ppm by volume in the atmosphere) the body is able to detoxify without any detectable effects. Reviewing the supplied-reference handbook before exam day helps you become familiar with the charts formulas, tables, and other reference information provided. Get a goods night rest as often as you can. PPI does a solid job of keeping attendees on a schedule and giving them an overall review of the required materials. The handbook is intended solely for use on the NCEES PE Environmental exam. WBGTeff = WBGT measured + Clothing Adjustment Factor (CAF) Heat Stress Index HSI = Ereq /Emax * 100 Ereq = Metabolic Convective + Radiant required BTUs heat loss/hour, if > 0 Emax = evaporation rate < 2,400 BTU /hr sweat rate equivalent to 1 liter water/hr Metabolic Work-load category is determined by averaging metabolic rates for the tasks and then ranking them: 1. i Ti Ci = time spent at specified SPL (hours) Ti = time permitted at SPL (hours) ! Add Metcalf & Eddy, McCoy's, and your selection of air resources. Light work: up to 200 kcal/hour 2. Avallone, Eugene A., Theodore Baumeister III, and Ali M. Sadegh, Marks' Standard Handbook for Mechanical Engineers, 11th ed. The variate x is said to be normally distributed if its density function f (x) is given by an expression of the form f^ xh = 2 xn n 1 1d e 2 v v 2r = population mean = standard deviation of the population - 3 # x # 3 When = 0 and 2 = = 1, the distribution is called a standardized or unit normal distribution. The best part was receiving a good study structure, being held accountable for doing it, and having a place to ask questions and review the concepts. The dose below which there are no harmful effects LOAEL = Lowest Observed Adverse Effect Level Reference Dose Reference dose (RfD) is determined from the Noncarcinogenic Dose-Response Curve using NOAEL. Systems that use filtration other than the conventional or direct filtration must follow state limits, which must include turbidity at no time exceeding 5 NTUs Heterotrophic Plate Count (HPC): No more than 500 bacterial colonies per milliliter Long Term 1 Enhanced Surface Water Treatment: Surface water systems or groundwater under the direct influence (GWUDI) systems serving fewer than 10,000 people must comply with the applicable Long Term 1 Enhanced Surface Water Treatment Rule provisions (such as turbidity standards, individual filter monitoring, Cryptosporidium removal requirements, updated watershed control requirements for unfiltered systems) Long Term 2 Enhanced Surface Water Treatment Rule: This rule applies to all surface water systems or ground water systems under the direct influence of surface water. The Environmental PE exam was 100 questions. Venturi Meters Q= CvA2 1 _ A2/A1 i 2 P P 2g d c1 + z1 c2 z2 n Q = volumetric flow rate Cv = coefficient of velocity A = cross-sectional area of flow P = pressure = g A1 { z1 = elevation of venturi entrance z2 = elevation of venturi throat 2018 NCEES 15 }A 2 Chapter 1: Water The above equation is for incompressible fluids. ***Conventional and direct filtration also have requirements for monitoring of individual filter effluent turbidity (IFE). The NCEES handbook is definitely not encompassing. 2018 NCEES 141 6 ASSOCIATED ENGINEERING PRINCIPLES Quadratic Equation ax2 + bx + c = 0 b ! Book reviews, interviews, editors' picks, and more. Energy Equation The energy equation for steady incompressible flow with no shaft device is v12 P 2 v 22 P1 c + z1 + 2g = c + z2 + 2g + h f or v12 P 2 v 22 P1 + + = + + z z tg 1 2g tg 2 2g + h f hf = head loss, considered a friction effect, and all remaining terms are defined above If the cross-sectional area and the elevation of the pipe are the same at both sections (1 and 2), then z1 = z2 and v1 = v2. 2018 NCEES 131 Chapter 5: Environmental Health and Safety Hearing conservation program requires: (1) testing employee hearing, (2) providing hearing protection at employee's request, and (3) monitoring noise exposure. of H2O joule (J) J J J/s 2.540 0.0334 13.60 0.0361 0.002458 9.478 104 0.7376 1 1 centimeter (cm) atm in. 779780, 1989, Taylor and Francis, Ltd. 2018 NCEES 118 Chapter 5: Environmental Health and Safety Hearing The average shifts with age of the threshold of hearing for pure tones of persons with "normal" hearing, using a 25-year-old group as a reference group. There was a problem adding this item to Cart. The PE license marks someone as a leader in their field. 28.0 22.0 n.a. And, always keep a level head. _ xk - ni f _ xk i n 2 k= 1 Let X be a continuous random variable having a density function f(X) and let Y = g(X) be some general function. 2018 NCEES 1 Chapter 1: Water The difference in pressure between two different points is P2 P1 = (z2 z1) = h = gh Absolute pressure = atmospheric pressure + gauge pressure reading Absolute pressure = atmospheric pressure vacuum gauge pressure reading Energy Equation (Bernoulli) P V2 H = Za + a + 2ag H = total head (ft) Pa = pressure head Pa = pressure (lb/ft 2) = specific weight of fluid (lb/ft3) Va2 2g = velocity head Va = velocity (ft/sec) g = acceleration of gravity (32.2 ft/sec 2) Za = elevation (ft) Manometers P P P Bober, W., and R.A. Kenyon, Fluid Mechanics, 1st ed. Xi2 When the discrete data are rearranged in increasing order and n is odd, the median is the value of the b n + 1 l item 2 th When n is even, the median is the average of the b n l and b n + 1l items. A1 , T1 , 1 Q12 AR , TR , R A2 , T2 , 2 : Q12 = 1 f 1 + f1A1 v `T14 T 24 j 1 f2 1 1 + f A 2 2 1 1 A1F12 + =d A F n + d A F nG 1 1R 2 2R Mass Transfer Diffusion Molecular Diffusion p D 2p Gas: NA = PA _ NA + NB i - m A RT 2z 2x Liquid: NA = xA _ NA + NB i - CDm 2zA Ni = molar flux of component i P = pressure pi = partial pressure of component i Dm = mass diffusivity R = universal gas constant T = temperature z = length 2018 NCEES 187 Chapter 6: Associated Engineering Principles Unidirectional Diffusion of a Gas A Through a Second Stagnant Gas B (Nb= 0) NA = ` pA2 pA1 j DmP # z2 z1 R T _ pB ilm in which (pB)lm is the log mean of pB2 and pB1 _ pBM ilm = pB2 pB1 p ln c pB2 m B1 Ni = diffusive flux [mole/(time area)] of component i through area A, in z direction Dm = mass diffusivity pI = partial pressure of species I C = concentration (mole/volume) (z2 z1) = diffusion flow path length Equimolar Counter-Diffusion (Gases) (NB = NA) NA = Dm ] RT g # 8_ pA1 - pA2i ^ DzhB NA = Dm ^CA1 - CA2h Dz Convection Two-Film Theory (for Equimolar Counter-Diffusion) NA = k'G (pAG pAi) = k'L (CAi CAL) = K'G (pAG pA*) = K'L (CA* CAL) NA = molar flux of component A k'G = gas phase mass-transfer coefficient k'L = liquid phase mass-transfer coefficient K'G = overall gas phase mass-transfer coefficient K'L = overall liquid phase mass-transfer coefficient pAG = partial pressure in component A in the bulk gas phase pAi = partial pressure at component A at the gas-liquid interface CAi = concentration (mole/volume) of component A in the liquid phase at the gas-liquid interface CAL = concentration of component A in the bulk liquid phase pA* = partial pressure of component A in equilibrium with CAL CA* = concentration of component A in equilibrium with the bulk gas vapor composition of A Overall Coefficients 1/K'G = 1/k'G + H/k'L 1/K'L = 1/Hk'G + 1/k'L H = Henry's Law constant where pA* = H CAL and CA* = pAG/H 2018 NCEES 188 Chapter 6: Associated Engineering Principles Dimensionless Group Equation (Sherwood) For the turbulent flow inside a tube, the Sherwood number is: 1 3 0.8 kD n DVt Sh = d m n = 0.023 c n m d n Dm tDm D = inside diameter Dm = diffusion coefficient V = average velocity in the tube = fluid density = fluid viscosity km = mass-transfer coefficient Unit and Conversion Factors This handbook uses both the metric system of units and the U.S. Break-even analysis is used to describe the percentage of capacity of operation for a manufacturing plant at which income will just cover expenses. 1 review. The pressure drop P1 P2 is given by the following: P1 P2 = hf = ghf 2018 NCEES 3 Chapter 1: Water Field Equation The field equation is derived when the energy equation is applied to one-dimensional flows. This over 500-page book is known as the PE Reference Handbook. Lead and copper analytical results are evaluated against an action level, not an MCL. 6 mA16 mA Painful shock, begin to lose muscular control. 2018 NCEES 43 Chapter 1: Water CT Values* for 3-LOG Inactivation of Giardia Cysts by Free Chlorine Temperature 5 < 50 mg/kg 50 < 300 mg/kg 300 < 2,000 mg/kg 2,000 < 5,000 mg/kg PICTOGRAM SIGNAL WORD NO SYMBOL DANGER HAZARD STATEMENT FATAL IF SWALLOWED DANGER DANGER WARNING WARNING FATAL IF SWALLOWED TOXIC IF SWALLOWED HARMFUL IF SWALLOWED MAY BE HARMFUL IF SWALLOWED A Guide to the Globally Harmonized System of Classification and Labelling of Chemicals (GHS), Washington, D.C.: U.S. Department of Labor, Occupational Health and Safety Administration, p. 42. The procedure for determining the lead 90th percentile value is as follows: 90th percentile value for more than five samples: Step 1: Place lead results in ascending order (from lowest to highest value). The added risk of cancer is calculated as follows: Risk = dose # toxicity = CDI # CSF CDI = Chronic Daily Intake CSF = Cancer Slope Factor. That said, the most helpful thing from the review course was learning how to navigate this book. Environmental Engineering Reference Manual Pe The Environmental Engineering Reference Manual is the most comprehensive textbook for the NCEES Environmental PE exam. 2018 NCEES 119 Chapter 5: Environmental Health and Safety Estimated average trend curves for net hearing loss at 1,000, 2,000, and 4,000 Hz after continuous exposure to steady noise are shown. CRITICAL ZONE LAMINAR FLOW .07 2018 NCEES Drag Coecient for Spheres, Disks, and Cylinders CD = 24 , Re < 10 Re 100,000 SPHERES 1,000 DISKS Chapter 1: Water 36 DRAG COEFFICIENT CD = 2FD v2A 10,000 100 CYLINDERS 10 1.0 0.1 0.0001 0.001 0.01 0.1 1.0 10 REYNOLDS NUMBER Re = Note: Intermediate divisions are 2, 4, 6, and 8 100 Dv 1,000 10,000 100,000 1,000,000 Chapter 1: Water Regulated Drinking Water Contaminants The National Primary Drinking Water Regulations (NPDWRs or primary standards) are legally enforceable standards that a pply to public water systems. document.write( new Date().getFullYear() ); Kaplan, Inc. All Rights Reserved. Click on "View reference handbooks" under the "Useful Documents" section of "Common Tasks.". Microbial Kinetics BOD Exertion k yt = L _1 - e -kt i = BOD decay rate constant, base e (days1) L = ultimate BOD (mg/L) t = time (days) yt = amount of BOD exerted at time t (mg/L) Stream Modeling Streeter Phelps kL D = k 1- 0k _e -k1t - e -k2t i + D0e -k2t 2 1 ` k2 - k1 j k 1 tc = k - k ln > k2 f1 - D0 k L pH 2 1 1 1 0 k Dc = k1 L0e -k1tc 2 DO = DOsat D D = dissolved oxygen deficit (mg/L) Dc = maximum dissolved oxygen deficit (mg/L) DO = dissolved oxygen concentration (mg/L) D0 = initial dissolved oxygen deficit in mixing zone (mg/L) DOsat = saturated dissolved oxygen concentration (mg/L) k1 = deoxygenation rate constant, base e (days1) k2 = reaeration rate constant, base e (days1) L0 = initial BOD ultimate in mixing zone (mg/L ) t = time (days) tc = time at which minimum dissolved oxygen occurs (days) 2018 NCEES 32 Chapter 1: Water Kinetic Temperature Corrections kT = k20 ()T - 20 Activated sludge: = 1.136 = 1.056 Reaeration = 1.024 Biotowers = 1.035 Trickling Filters = 1.072 T = 420C T = 2130C Determination of Required Reservoir Capacity S = I O S = change in storage volume during a specified time interval I = total inflow volume during this period O = total outflow volume during this period (evaporation, transpiration, and flood discharge) Pan Evaporation Pan evaporation is used widely to estimate lake evaporation in the United States. ", "This was a good class overall. Bring your club to Amazon Book Clubs, start a new book club and invite your friends to join, or find a club thats right for you for free. Q = volumetric flow A0 = cross-sectional area of flow g = acceleration of gravity h = height of fluid above orifice 2018 NCEES 11 Chapter 1: Water Multipath Pipeline Problems P P L v v v L Vennard, John K., and Robert L. Street. BHP can be expressed as Pbhp= q dpinWG/ 6,356 (2) Pbhp = brake horsepower (hp) = fan efficiency Types of Pressure Measurements TP = VP + SP TP = total pressure VP = velocity pressure SP = static pressure Conservation of Energy SP1 + VP1 = SP2 + VP2 + hL hL = head loss Velocity Pressure 0.5 m V = 1, 096 c VP t V = 4,005(VP)0.5 V = velocity (ft/min) VP = velocity pressure (water column inches) = density of air at STP Overall Fan Efficiency overall = f t m c overall = overall fan efficiency f = fan, f = se catalog se = system effect, zero system effect means = 1.0 catalog = catalog fan efficiency t = transmission m = motor c = control system 2018 NCEES 135 Chapter 5: Environmental Health and Safety Summary of Hood Airflow Equations Industrial Ventilation: A Manual of Recommended Practice for Design, 28th ed., Cincinnati: American Conference of Governmental Industrial Hygienists, 2013, p. 6-27. In my lifetime as a professional engineer, I havent found much that cant be fixed by sitting down with someone you love, having a piece of pie, and drinking a cup of tea. Muscular contraction and nerve damage begins to occur. This relation is valid only for flow in the laminar region. Safety Data Sheet (SDS) The SDS provides comprehensive information for use in workplace chemical management. You should select the exam that best supports your current career. 2018 NCEES 117 Chapter 5: Environmental Health and Safety U.S. Hazen-Williams Equation Values of Hazen-Williams Coefficient C V = k1 CR H0.63 S0.54 Pipe Material Ductile iron Concrete (regardless of age) Cast iron: New 5 yr old 20 yr old Welded steel, new Wood stave (regardless of age) Vitrified clay Riveted steel, new Brick sewers Asbestos-cement Plastic C = roughness coefficient k1 = 0.849 for SI units k1 = 1.318 for USCS units RH = hydraulic radius (ft or m) S = slope of energy grade line = hf /L (ft/ft or m/m) V = velocity (ft/sec or m/s) 2018 NCEES 9 C 140 130 130 120 100 120 120 110 110 100 140 150 Chapter 1: Water Circular Pipe Head Loss Equation (Head Loss Expressed in Feet) 4.73 L Q1.852 = K l Q1.852 C1.852 D 4.87 hf = head loss (ft) hf = L = pipe length (ft) D = pipe diameter (ft) Q = flow (cfs) C = Hazen-Williams coefficient K l = friction coefficient Hardy Cross Method for Pipe Networks Using Hazen-Williams Equation Q = / hf h 1.85 / f Q Q = flow correction (gpm) Circular Pipe Head Loss Equation (Head Loss Expressed as Pressure) U.S. Full content visible, double tap to read brief content. Where the WBGT of the work area is different from that of the rest area, a time-weighted average should be used (consult the ACGIH 19921993 Threshold Limit Values for Chemical Substances and Physical Agents and Biological Exposure Indices, 1992). environmental-engineering-reference-manual-for-the-pe-exam 1/2 Downloaded from stats.ijm.org on May 11, 2022 by guest . Having a good understanding of how to navigate through the FE Reference Handbook is key to an effective and speedy testing experience. New York: Wiley, 1982. p. 535. Theories, conversions, formulas, and definitions that examinees are expected to know have not been included. In the USCS system of units, both force and mass are called pounds. MACRS FACTORS Recovery Period (Years) Year 3 5 7 10 Recovery Rate (Percent) 1 33.33 20.00 14.29 10.00 2 44.45 32.00 24.49 18.00 3 14.81 19.20 17.49 14.40 4 7.41 11.52 12.49 11.52 5 11.52 8.93 9.22 6 5.76 8.92 7.37 7 8.93 6.55 8 4.46 6.55 9 6.56 10 6.55 11 3.28 Capitalized Costs Capitalized costs are present worth values using an assumed perpetual period of time. Minor Losses in Pipe Fittings, Contractions, and Expansions Head losses also occur as the fluid flows through pipe fittings (i.e., elbows, valves, couplings, etc.) I used this as my starting point for beginning to study for the PE exam. Flammability Flammable describes any solid, liquid, vapor, or gas that will ignite easily and burn rapidly. Instead, the computer-based exam will include a PDF version of the handbook for your use. Magnesium carbonate hardness removal Mg(HCO3)2 + 2 Ca(OH)2 2 CaCO3(s) + Mg(OH)2(s) + 2 H2O 5. nPr is an alternative notation for P(n,r) 2. Infants below the age of six months who drink water containing nitrite in excess of the MCL could become seriously ill and, if untreated, may die. The PDF version of the PE Environmental Reference Handbook that you use on . The lead action level is exceeded if the concentration of lead in more than 10 percent of tap water samples collected during any monitoring period is greater than 0.015 mg/L (i.e., if the 90th percentile level lead level is greater than 0.015 mg/L). Positive psychology is concerned with eudaimonia, "the good life" or flourishing, living according to what holds the . 3EPAs surface water treatment rules require systems using surface water or ground water under the direct influence of surface water to a. Disinfect their water, and b. Filter their water, or c. Meet criteria for avoiding filtration so that the following contaminants are controlled at the following levels: Cryptosporidium: Unfiltered systems are required to include Cryptosporidium in their existing watershed control provisions Giardia lamblia: 99.9% removal/inactivation Viruses: 99.99% removal/inactivation 2018 NCEES 40 Chapter 1: Water Legionella: No limit, but EPA believes that if Giardia and viruses are removed/inactivated, according to the treatment techniques in the Surface Water Treatment Rule, Legionella will also be controlled Turbidity: For systems that use conventional or direct filtration, at no time can turbidity (cloudiness of water) go higher than 1 Nephelometric Turbidity Unit (NTU), and samples for turbidity must be less than or equal to 0.3 NTUs in at least 95 percent of the samples in any month. I needed the Civil Reference for about 15 questions. Reviewed in the United States on November 21, 2014. How should you make a study Hi! It contains 80 total questions: 40 multiple-choice questions in the 4-hour AM session, and 40 multiple-choice questions in the 4-hour PM session. of H2O lbf/in2 (psi) atm Btu ft-lbf newtonm (Nm) watt (W) kilogram (kg) kgf kilometer (km) km/hr kilopascal (kPa) kilowatt (kW) kW kW kW-hour (kWh) kWh kWh kip (K) K 2.205 9.8066 3,281 0.621 0.145 1.341 3,413 737.6 3,413 1.341 3.6 106 1,000 4,448 pound (lbm) newton (N) feet (ft) mph lbf/in2 (psi) horsepower (hp) Btu/hr (ft-lbf )/sec Btu hp-hr joule (J) lbf newton (N) bar 1 105 Pa bar 0.987 atm barrelsoil 42 gallonsoil Btu 1,055 joule (J) Btu 2.928 104 kilowatt-hr (kWh) Btu 778 ft-lbf Btu/hr 3.930 104 horsepower (hp) Btu/hr 0.293 watt (W) Btu/hr 0.216 ft-lbf/sec calorie (g-cal) cal cal cal/sec centimeter (cm) cm centipoise (cP) centipoise (cP) centipoise (cP) centistoke (cSt) cubic feet/second (cfs) cubic foot (ft3) cubic foot cubic meters (m3) 3.968 103 1.560 106 4.186 4.184 3.281 102 0.394 0.001 1 2.419 1 106 0.646317 7.481 28.32 1,000 Btu hp-hr joule (J) watt (W) foot (ft) inch (in) pascalsec (Pas) g/(ms) lbm/hr-ft m2/sec (m2/s) million gallons/day (MGD) gallon liters liters degree (angular) degree (angular) degree (angular) 1/0.9 grad 2/360 radian 17.778 mil electronvolt (eV) 1.602 1019 joule (J) foot (ft) 30.48 cm ft 0.3048 meter (m) ft-pound (ft-lbf) 1.285 103 Btu ft-lbf 3.766 107 kilowatt-hr (kWh) ft-lbf 0.324 calorie (g-cal) ft-lbf 1.356 joule (J) ft-lbf/sec 1.818 103 horsepower (hp) ft3 7.4805 gal ft3 28.32 L gal 1/325,851 ac-ft gal 3,785.4 cm3 gal 0.13368 ft3 gal (Imperial) 1.2 gal (U.S) gal (U.S) 0.8327 gal (Imperial) gal 3.7854 L gal 3.7854 103 m3 gal 1.0 106 MG gal 0.00495 yd3 gal (of water) 8.34 lbm (of water) 2018 NCEES By To Obtain lbm 7000.0 grains lbm 453.59 g lbm 0.45359 kg lbm 4.5359 105 mg lbm 5.0 104 tons (mass) lbm (of water) 0.12 gal (of water) lbm/ac-ft-day 0.02296 lbm/1,000 ft3-day lbm/ft3 0.016018 g/cm3 lbm/ft3 16.018 kg/m3 lbm/1,000 ft3-day 43.560 lbm/ac-ft-day lbm/1,000 ft3-day 133.68 lbm/MG-day lbm/MG 0.0070 grains/gal lbm/MG 0.12 mg/L lbm/MG-day 0.00748 lbm/1,000 ft3-day 192 Chapter 6: Associated Engineering Principles Conversion Factors (continued) Multiply By To Obtain liter (L) L L L L/second (L/s) L/s 61.02 in3 0.0353 ft3 0.264 gal (U.S. liq) 103 m3 2.119 ft3/min (cfm) 15.85 gal (U.S.)/min (gpm) meter (m) 3.281 feet (ft) m 1.094 yard m/second (m/s) 196.8 feet/min (ft/min) mg 2.2046 106 lbm mg/L 1.0 ppm mg/L 0.05842 grains/gal mg/L 8.3454 lbm/MG MG 1.0 106 gal MG/ac-day 22.968 gal/ft2-day MGD 1.5472 ft3/sec MGD 1 106 gal/day MGD/ac (mgad) 22.957 gal/day-ft2 mile (statute) 5,280 feet (ft) mile (statute) 1.609 kilometer (km) mile/hour (mph) 88.0 ft/min (fpm) mph 1.609 km/h mm of Hg 1.316 103 atm mm of H2O 9.678 105 atm newton (N) newton (N) Nm Nm 0.225 1 0.7376 1 oz 28.353 g pascal (Pa) Pa Pasec (Pas) pound (lbm, avdp) lbf lbf-ft lbf/in2 (psi) psi psi psi 9.869 106 1 10 0.454 4.448 1.356 0.068 2.307 2.036 6,895 atmosphere (atm) newton/m2 (N/m2) poise (P) kilogram (kg) N Nm atm ft of H2O in. Incident Response Procedures The purpose of the incident command system is to provide a common, flexible but standardized, approach for managing incidents. 2018 NCEES 33 Chapter 1: Water Dissolved-Oxygen Concentration in Water Temp, C 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 Dissolved-oxygen concentration in water as a function of temperature and salinity (barometric pressure = 760 mm Hg) Dissolved-oxygen Concentration, mg/L Salinity, parts per thousand 0 5 10 15 20 25 30 35 40 14.60 14.11 13.64 13.18 12.74 12.31 11.90 11.50 11.11 14.20 13.73 13.27 12.83 12.40 11.98 11.58 11.20 10.83 13.81 13.36 12.91 12.49 12.07 11.67 11.29 10.91 10.55 13.45 13.00 12.58 12.16 11.76 11.38 11.00 10.64 10.29 13.09 12.67 12.25 11.85 11.47 11.09 10.73 10.38 10.04 12.76 12.34 11.94 11.56 11.18 10.82 10.47 10.13 9.80 12.44 12.04 11.65 11.27 10.91 10.56 10.22 9.89 9.57 12.13 11.74 11.37 11.00 10.65 10.31 9.98 9.66 9.35 11.83 11.46 11.09 10.74 10.40 10.07 9.75 9.44 9.14 11.55 11.19 10.83 10.49 10.16 9.84 9.53 9.23 8.94 11.28 10.92 10.58 10.25 9.93 9.62 9.32 9.03 8.75 11.02 10.67 10.34 10.02 9.71 9.41 9.12 8.83 8.56 10.77 10.43 10.11 9.80 9.50 9.21 8.92 8.65 8.38 10.53 10.20 9.89 9.59 9.30 9.01 8.74 8.47 8.21 10.29 9.98 9.68 9.38 9.10 8.82 8.55 8.30 8.04 10.07 9.77 9.47 9.19 8.91 8.64 8.38 8.13 7.88 9.86 9.56 9.28 9.00 8.73 8.47 8.21 7.97 7.73 9.65 9.36 9.09 8.82 8.55 8.30 8.05 7.81 7.58 9.45 9.17 8.90 8.64 8.39 8.14 7.90 7.66 7.44 9.26 8.99 8.73 8.47 8.22 7.98 7.75 7.52 7.30 9.08 8.81 8.56 8.31 8.07 7.83 7.60 7.38 7.17 8.90 8.64 8.39 8.15 7.91 7.69 7.46 7.25 7.04 8.73 8.48 8.23 8.00 7.77 7.54 7.33 7.12 6.91 8.56 8.32 8.08 7.85 7.63 7.41 7.20 6.99 6.79 8.40 8.16 7.93 7.71 7.49 7.28 7.07 6.87 6.68 8.24 8.01 7.79 7.57 7.36 7.15 6.95 6.75 6.56 8.09 7.87 7.65 7.44 7.23 7.03 6.83 6.64 6.46 7.95 7.73 7.51 7.31 7.10 6.91 6.72 6.53 6.35 7.81 7.59 7.38 7.18 6.98 6.79 6.61 6.42 6.25 7.67 7.46 7.26 7.06 6.87 6.68 6.50 6.32 6.15 7.54 7.33 7.14 6.94 6.75 6.57 6.39 6.22 6.05 7.41 7.21 7.02 6.83 6.65 6.47 6.29 6.12 5.96 7.29 7.09 6.90 6.72 6.54 6.36 6.19 6.03 5.87 7.17 6.98 6.79 6.61 6.44 6.26 6.10 5.94 5.78 7.05 6.86 6.68 6.51 6.33 6.17 6.01 5.85 5.69 6.93 6.75 6.58 6.40 6.24 6.07 5.92 5.76 5.61 6.82 6.65 6.47 6.31 6.14 5.98 5.83 5.68 5.53 6.72 6.54 6.37 6.21 6.05 5.89 5.74 5.59 5.45 6.61 6.44 6.28 6.12 5.96 5.81 5.66 5.51 5.37 6.51 6.34 6.18 6.03 5.87 5.72 5.58 5.44 5.30 6.41 6.25 6.09 5.94 5.79 5.64 5.50 5.36 5.22 45 10.74 10.46 10.20 9.95 9.71 9.48 9.27 9.06 8.85 8.66 8.47 8.30 8.12 7.96 7.80 7.65 7.50 7.36 7.22 7.09 6.96 6.84 6.72 6.60 6.49 6.38 6.28 6.17 6.08 5.98 5.89 5.80 5.71 5.63 5.54 5.46 5.39 5.31 5.24 5.16 5.09 Colt, J., Computation of Dissolved Gas Concentration in Water as Functions of Temperature, Salinity, and Pressure, Bethesda: American Fisheries Society, 1984.
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