Direct Environmental Factors at Municipal Wastewater Treatment Works: Evaluation and Control of Site Aesthetics, Air Pollutants, Noise and Other Operation and Construction Factors : Technical ReportU.S. Environmental Protection Agency, Office of Water Programs Operations, 1976 - 104 páginas |
Palavras e frases frequentes
A-weighted acoustic activated carbon activated sludge adjacent aeration aerosols Air Pollution Airborne areas barrier chlorine community noise control measures dB re 20 decibels disinfection distance downwind effects effluent emissions enclosures engineer environment environmental equivalent sound erosion excavation EXISTING CONDITIONS frequency GAUSSIAN DISTRIBUTION groundwater hydrogen peroxide hydrogen sulfide impact impulse noises land lb/sq ft located maintenance mechanical aerators meter methods minimize Noise Control noise exposure noise levels noise sources nuisance Octave Band odor concentrations odor control odor units operation oxidation oxidizing agents oxygen ozone planning prevent pumping reduce reference residential runoff sand-aggregate plaster sensitive Sewage sewer slopes Sodium Permanganate soil sound level sound power level sound pressure level specific standards sulfur Table tanks temperature tion transmission truck U.S. EPA U.S. EPA Office units per cubic urban vapors waste wastewater facility wastewater treatment facility weighting network wind
Passagens conhecidas
Página 103 - Executive Order 11296 EVALUATION OF FLOOD HAZARD IN LOCATING FEDERALLY OWNED OR FINANCED BUILDINGS, ROADS, AND OTHER FACILITIES, AND IN DISPOSING OF FEDERAL LANDS AND PROPERTIES...
Página 103 - State management program developed under the Coastal Zone Management Act of 1972 (16 USC §§1451 et seq...
Página 37 - Night refers to the period from 1 hour before sunset to 1 hour after sunrise. Note that the neutral class, D, can be assumed for overcast conditions during day or night, regardless of wind speed. The neutral class, D, should be assumed for overcast conditions during day or night. "Strong" incoming solar radiation corresponds to a solar altitude greater than 60° with clear skies; "slight" insolation corresponds to a solar altitude from 15° to 35° with clear skies.
Página 103 - Historic Preservation Act of 1974 (16 USC 469 et seq.), Executive Order 11593 "Protection and Enhancement of the Cultural Environment...
Página 103 - Engineers installations and activities in connection with applications for permits authorizing structures and work in or affecting navigable waters of the United States pursuant to the Rivers and Harbors Act of 1899 (33 USC 401 et seq...
Página 24 - ... anchoring point, n — a reference point against which other items are judged. anosmia, n — lack of sensitivity to odor stimuli. astringency — quality perceived due to the complex of sensations caused by shrinking, drawing, or puckering of the skin or mucosal surfaces. attitude, n- — an acquired predisposition to respond in a consistent way toward a given class of objects or ideas. attitude scale, n — a means for eliciting indications of the attitudes or opinions held, usually on a measuring...
Página 61 - Cn/Tn exceeds unity, then, the mixed exposure should be considered to exceed the limit value. Cn indicates the total time of exposure at a specified noise level, and Tn indicates the total time of exposure permitted at that level.
Página 62 - Within blast zone of exploding bomb Within crew area of heavy artillery piece or naval gun when shooting At shooter's ear when firing hand gun...
Página 25 - ... color, the dimension of color that describes its purity; if highly saturated it appears to be pure hue and free of gray, but if of low saturation it appears to have a great deal of gray mixed with it. sensory, adj — pertaining to the sense organs. sensory panel, n — a group of individuals that may be selected on the basis of sensitivity to stimuli, reliability, or whose perceptions are judged to be representative of some larger population. It is used to obtain information concerning the sensory...