In all Technical-Education-Research Districts, no building or land, except as otherwise provided in this chapter, shall be erected or used except for one (1) or more of the following specified uses:

(1)

Any uses which are charged with the principal function of education, research, or technical training and accessory uses and which further meet the following performance standards set forth in section 5.119 relevant to smoke, dirt, and dust; noise, glare and heat; wastes, odors, noxious gases, fire hazards and electromagnetic radiation.

(2)

Dormitories for students enrolled in, and quarters for instructors employed by, institutions offering technical education, when incidental to any permitted principal use.

No use, otherwise allowed, shall be permitted within any Technical-Education-Research District (TR District) which does not conform to the following standards of use, occupancy and operation, which standards are hereby established as the minimum requirements to be maintained within the said area.

(1)

Smoke. It shall be unlawful for any person, firm or corporation to permit the emission of any smoke from any source whatever to a density greater than that density described as No. 1 on the Ringlemann Chart; provided, that the following exceptions shall be permitted: Smoke, the shade of appearance of which is equal to, but not darker than, No. 2 of the Ringlemann Chart for a period or periods, aggregating four (4) minutes in any thirty (30) minutes.

Method of measurement: For the purpose of grading the density of smoke, the Ringlemann Chart, as now published and used by the United States Bureau of Mines, which is hereby made a part of this chapter, shall be the standard. However, the Umbrascope readings of smoke densities may be used when correlated with Ringlemann's Chart.

(2)

Dust, dirt and fly ash. No person, firm or corporation shall operate or cause to be operated, maintain or cause to be maintained, any process for any purpose, or furnace or combustion device for the burning of coal or other natural or synthetic fuels, without maintaining and operating, while using said process or furnace or combustion device, recognized and approved equipment, means, method, device or contrivance to reduce the quantity of gas or airborne solids or fumes emitted into the open air, which is operated in conjunction with said process, furnace, or combustion device so that the quantity of gas or airborne solids shall not exceed two-tenths (0.20) grains per cubic foot of the carrying medium at a temperature of five hundred (500) degrees Fahrenheit.

Method of Measurement: For the purpose of determining the adequacy of such devices, these conditions are to be conformed to when the percentage of excess air in the stack does not exceed fifty (50) percent at full load. The foregoing requirement shall be measured by the A.S.M.E. Test Code for dust-separating apparatus. All other forms of dust and dirt shall be completely eliminated insofar as escape or emission into the open air is concerned. The director of the department of building and safety engineering may require such additional data as is deemed necessary to show that adequate and approved provisions for the prevention and elimination of dust and dirt have been made.

(3)

Noise. The intensity level of the sounds being emitted from any operation within the TR District shall not exceed the following decibel levels when adjacent to the following types of use districts:

Objectionable noises, due to intermittence, heat frequency or shrillness shall be muffled so as not to become a nuisance to adjacent uses.

Method of Measurement: The sound level, in decibels, measured at the points adjacent to the various use districts shall meet the established levels ninety (90) percent of the time, and shall at no time exceed the established sound levels by more than ten (10) percent; the sound levels shall be measured with an approved standard sound-level meter incorporating a 40-db. frequency-weighing network, or by any method subsequently approved by the U.S. Bureau of Standards.

(4)

Glare and heat. Such operations producing an intensity of light and heat (e.g. welding operations and acetylene torch cutting) which would prove detrimental to any person or to the public, or to endanger the health, comfort or safety of any such person or to the public, shall be performed within a completely enclosed building or behind a fence so as to completely obscure said operation from view from any point beyond the property line, except during the period of construction of the facilities to be used and occupied.

(5)

Sewage wastes. Privately developed and installed sewage treatment systems shall meet the requirements of, and be given approval by, the county board of health. The city shall not issue a building permit for the erection, construction, reconstruction or alteration of any building or structure until the plans for said sewage treatment have been given final approval by the county board of health.

Wherever public sewer systems are involved, any person, firm or corporation shall operate or cause to be operated, maintain or cause to be maintained, any process which will meet the following requirements:

(a)

No wastes shall be discharged into the public sewer system which are dangerous to the public health and safety or create obnoxious conditions inimical to the public interest.

(b)

Acidity and alkalinity shall be neutralized to a pH of 7.5 as a daily average in a volumetric basis, with a maximum temporary variation of pH 5.0 to 10.0. The term pH refers to the degrees of alkalinity or acidity of wastes.

(c)

Wastes shall contain not more than ten (10.0) p.p.m. (parts per million) of the following gases: Hydrogen, Sulfide, Sulphur Dioxide, Oxides of Nitrogen, and any of the Halogens. Wastes shall contain no cyanides.

(d)

Wastes shall not contain any grease or oil or any oily substance in excess of one hundred (100) p.p.m. (parts per million), or exceed a daily average of twenty-five (25) p.p.m.; or that will solidify or become viscous at temperatures between thirty-two (32) degrees and one hundred fifty (150) degrees Fahrenheit.

(e)

Wastes shall not contain any insoluble substances in excess of ten thousand (10,000) p.p.m. (parts per million) or exceed a daily average of five hundred (500) p.p.m. (parts per million) or fail to pass a No. 8 (U.S. Bureau of Standards) sieve, or have a dimension greater than one-half (½) inch (1.27 centimeters).

(f)

Wastes shall not have a chlorine demand greater than fifteen (15) p.p.m. (parts per million).

(g)

Wastes shall not contain phenols in excess of .005 p.p.m. (parts per million).

(h)

Wastes shall not contain insoluble substances having specific gravity greater than 2.65.

(i)

Wastes shall not have any chemical reaction, either directly or indirectly, with materials of construction to impair the strength or durability of sewer structures.

Method of measurement. All the preceding standards and requirements of this subsection are to apply at the point where wastes are discharged into a public sewer or drainage way. Furthermore, all chemical and/or mechanical corrective treatment must be accomplished to practical completion before this point is reached.

(6)

Odor. The emission of obnoxious odors of any kind shall be unlawful.

Method of measurement. For the purpose of defining an odor, as such, it is hereby established that at such point where the measurement of the threshold of smell can be achieved, it shall be considered a noxious concentration and shall not be exceeded. These measurements will show the minimum concentration at which the first sensation of odor is had and shall be made in ounces of the substance per thousand cubic feet of air (e.g. Max. for ethyl selano mercaptan shall be eighteen-millionths of an ounce per one thousand (1,000) cu. ft. of air).

(7)

Gases. The escape or emission of any gas which is injurious or destructive in character shall be unlawful and may be summarily caused to be abated.

(8)

Electromagnetic radiation The following standards shall apply with respect to all Technical-Education-Research Districts:

(a)

General. It shall be unlawful within any TR District for any person, firm or corporation to operate or cause to be operated any planned or intentional source of electromagnetic radiation for such purposes as communication, experimentation, entertainment, broadcasting, heating, navigation, therapy vehicle velocity measurement, weather survey, aircraft detection, topographical survey, personal pleasure, or any other use directly or indirectly associated with these purposes which does not comply with the current regulations of the Federal Communications Commission's regulations if such radiation causes an abnormal degradation in performance of other electromagnetic radiators or electromagnetic receptors or quality and proper design because of proximity, primary field, blanketing, spurious reradiation conducted energy in power or telephone systems or harmonic content.

The determination of "abnormal degradation in performance" and "of quality and proper design" shall be made in accordance with good engineering practices as defined in the latest principles and standards of the American Institute of Electrical Engineers, the Institute of Radio Engineers, and the Radio Manufacturers Association. In case of any conflict between the latest standards and principles of the above groups, the following precedence in the interpretation of the standards and principles shall apply: (1) American Institute of Electrical Engineers; (2) Institute of Radio Engineers; and (3) Radio Manufacturers Association. Recognizing the special nature of many of the operations which will be conducted because of the research and education activities, it shall be unlawful for any person, firm or corporation to operate or cause to be operated, to maintain or cause to be maintained, any planned or intentional source of electromagnetic energy the radiated power from which exceeds one thousand (1,000) watts, without the express approval of the city zoning and planning commission.

(b)

Electromagnetic interference. For the purpose of these regulations, electromagnetic interference shall be defined as electromagnetic disturbances which are generated by the use of electrical equipment other than planned and intentional sources of electromagnetic energy which interfere with the proper operation of electromagnetic receptors of quality and proper design.

It shall be unlawful, within the city, for any person, firm or corporation to knowingly operate or to knowingly cause to be operated any source of electromagnetic interference, the radiation or transmission from which exceeds the minimum values tabulated below:

Method of measurement: For purposes of determining the level of radiated electromagnetic interference, standard field strength measuring techniques shall be employed. The maximum value of the tabulation shall be considered as having been exceeded if at any frequency in the section of the spectrum being measured and measured field strength exceeds the maximum value tabulated for this spectrum section.

For purposes of determining the level of electromagnetic interference transmitted or conducted by power, or telephone lines, a suitable, tunable, peak reading, radio frequency voltmeter shall be used. This instrument shall, by means of appropriate isolation coupling, be alternately connected from line to line and from line to ground during the measurement. The maximum value of the tabulation shall be considered as having been exceeded if at any frequency in the section of the spectrum being measured and the measured peak voltage exceeds the maximum value tabulated for this spectrum section.

In every TR District, any use of any facility or equipment, which results in a violation of the aforestated performance standards, shall be, and is hereby declared to be, a violation of this chapter and a nuisance and the same may be prosecuted under the penal provisions hereof, or abated by any proper legal means upon application of the city or any affected private person; provided, however, that in the event of any violation of the performance standards above set forth with respect to electromagnetic radiation or interference, no legal action shall be taken by the city to penalize the offender or to abate the nuisance unless the owner or operator of the offending facilities shall fail to correct the faulty conditions and conform to the stated performance standards within fifteen (15) days after the service of notice of such improper radiation or interference upon the owner or operator of such facilities.

For the purpose of determining the existence of a violation of the performance standards with respect to electromagnetic radiation or interference, the measurement of the intensity thereof may be made either at the borders of the premises upon which the offending facility is located or at any point outside the borders of such premises.

In every Technical-Education-Research District, the following accessory uses shall be permitted:

(1)

The operation of necessary facilities and equipment in connection with the principal use.

(2)

Other accessory uses and structures not otherwise prohibited, customarily incidental to any principal use.

The area and bulk regulations shall be regulated as set forth in the "schedule of regulations" in article 22.