Chapter 04 - Sewer
Chapter 04 - Sewer
Unless the context specifically indicates otherwise, the meaning of terms used in these regulations shall be as follows:
(a) "BOD" (denoting Biochemical Oxygen Demand) means the quantity of oxygen utilized in the biochemical oxidation of organic matter under standard laboratory procedure in 5 days at 20?C, expressed in milligrams per liter.
(b) "Building drain" means that part of the lowest horizontal piping of a drainage system which receives the discharge from soil, waste, and other drainage pipes inside the walls of the building and conveys it to the building sewer, beginning 10 feet outside the inner face of the building wall.
(c) "Building sewer" means the extension from the building drain to the public sewer or other place of disposal.
(d) "Enforcing officer" means the commission member of the Department of Public Works or his authorized deputy, agent or representative.
(e) "Garbage" means solid wastes from the domestic and commercial preparation, cooking, and dispensing of food, and from the handling, storage, and sale of produce.
(f) "Government" means the government of American Samoa or any area under the jurisdiction of the government.
(g) "Industrial wastes" means the water- carried wastes from industrial manufacturing processes, trade, or business as distinct from sanitary sewage.
(h) "Natural outlet" means any outlet into a watercourse, pond, ditch, bay or other body of surface or groundwater.
(i) "Person " means any individual, firm, company, association, society, corporation, or group.
(j) "pH" means the logarithm of the reciprocal of the weight of hydrogen ions in grams per liter of solution.
(k) "Pretreatment" means a chemical or biological process which will render industrial waste nontoxic and acceptable to the enforcing officer in all other characteristics.
(l) "Properly shredded garbage" means the wastes from the preparation, cooking, and dispensing of food that has been shredded to such a degree that all particles will be carried freely under the flow conditions normally prevailing in public sewers, with no particle greater than one-half inch in any dimension.
(m) "Public sewer" means a sewer in which all owners of abutting properties have equal rights, and is controlled by public authority.
(n) "Sanitary sewer" means a sewer which is designated to carry sewage and to which storm, surface, and groundwaters are not intentionally admitted.
(o) "Sewage" means a combination of the water-carried wastes from residences, business buildings, institutions, and industrial establishments, together with such ground, surface, and stormwaters as may be present.
(p) "Sewage works" means all facilities for collecting, pumping, treating, and disposing of sewage.
(q) "Sewer" means a pipe or conduit for carrying sewage.
(r) "Shall" is mandatory; "may" is permissive.
(s) "Slug" means any discharge of water, sewage, or industrial waste which in concentration of any given constituent or in quantity of flow exceeds for any period of duration longer than 15 minutes more than five times the average 24-hour concentration or flows during normal operation.
(t) "Standard laboratory procedures" means laboratory tests or determinations made in accordance with the recommendations of Standard Methods for the Examination of Water and Wastewater, latest edition.
(u) "Storm drain" (sometimes termed "storm sewer") means a sewer which is designated to carry storm and surface waters and drainage, but excludes sewage and industrial wastes, other than unpolluted cooling water.
(v) "Suspended solids" means solids that either float on the surface of, or are in suspension in, water, sewage or other liquids, and that are removable by laboratory filtering.
(w) "Watercourse" means a channel in which a flow of water occurs, either continuously or intermittently.
No person other than the enforcing officer shall uncover, make connections with or opening into, use, alter, or disturb any public sewer or appurtenance thereof without first obtaining a written permit from the enforcing officer.
Within one year of enactment of these regulations, a building sewer shall be provided for every building which contains piped water facilities that may be used for any normal domestic purposes.
All building sewers from buildings which stand within 300 feet of an existing public sanitary sewer shall, within one year of enactment of these regulations, be connected to said public sewer unless specifically exempted by the enforcing officer.
All building sewers from buildings which stand within 300 feet of any public sanitary sewer shall, within one year of completion of construction, be connected to said public sewer unless specifically exempted by the enforcing officer.
A septic tank and leaching field conforming to the recommendation set forth in the U.S. Public Health Service Publication No.526, "Manual of Septic Tank Practice", latest edition, shall be provided to receive the discharge of any building sewer which is not connected to a public sanitary sewer.
Old building sewer pipes and facilities may be used in connection with new building sewers only when they are found, on examination and test by the enforcing officer, to meet all requirements of these regulations.
The size, slope alignment, materials of construction of a building sewer, and the methods to be used in excavating, placing of the pipe, jointing, testing, and backfilling the trench, shall all conform to the requirements of the building and plumbing codes or other applicable and established rules and regulations of the enforcing officer.
No person shall make connection of roof downspouts, exterior foundation drains, area-way drains, or other sources of surface runoff or groundwater to a building sewer or building drain which in turn is connected directly or indirectly to a public sanitary sewer.
The connection of the building sewer into the public sewer shall conform to the requirements of the building and plumbing codes and other applicable rules and regulations of the government. Any deviation from the prescribed procedures and materials must be approved by the enforcing officer before installation.
The applicant for the building permit shall notify the enforcing officer 48 hours prior to the time when the building sewer is ready for inspection and connection to the public sewer. The connection shall be made under the supervision of the enforcing officer or his representative.
All excavations for building sewer installation shall be adequately guarded with barricades and lights so as to protect the public from hazard. Streets, sidewalks, parkways, and other public property disturbed in the course of the work shall be restored in a manner satisfactory to the enforcing officer.
All cost of installation of building sewers and septic tanks shall be the responsibility of the persons being served, except that the government may, at times, offer financial assistance to existing dwelling owners equal to but not more than half the construction cost.
In the instance of making any connection to a public sanitary sewer that previously served a septic tank, the septic tank shall be filled with earth to make that septic tank operable.
No person shall discharge or cause to be discharged any stormwater, surface water, groundwater, roof runoff, subsurface drainage, uncontaminated cooling water, or unpolluted industrial process waters to any sanitary sewer.
Stormwater and all other unpolluted drainage shall be discharged to such sewers as are specifically designated as storm sewers, or to a natural outlet approved by the enforcing officer.
No person shall discharge or cause to be discharged the following described waters or wastes to any public sewer:
(a) Any gasoline, benzene, naphtha, fuel oil, or other flammable or explosive liquid, solid, or gas;
(b) Any waters or wastes containing toxic or poisonous solids, liquids, or gases in sufficient quantity, either singly or by interaction with other wastes, to injure or interfere with any sewage treatment process, constitute a hazard to humans or animals, create a public nuisance, or create any hazard in the receiving waters of the sewage treatment plant, including but not limited to cyanides in excess of 2 mg/l as CN in the wastes as discharged to the public sewer;
(c) Any waters or wastes having a pH lower than 5.5 or having any other corrosive property capable of causing damage or hazard to structures, equipment, and personnel of the sewage work;
(d) Solid or viscous substances in quantities or of such size capable of causing obstruction to the flow in sewers, or other interference with the proper operation of the sewage works such as, but not limited to, ashes, cinders, sand, mud, straw, shavings, metal, glass, rags, feathers, tar, plastics, wood, garbage, whole blood, paunch manure, hair and fleshings, entrails, paper dishes, paper cups, paper milk containers, etc., either whole or ground by garbage grinders;
(e) All waters or wastes containing strong acid and pickling waste unless neutralized prior to discharging into these sewers and waters of waste containing solutions of rinse waters from platting processes whether pretreated or not.
No person shall discharge or cause to be discharged the following described substances, materials, waters, or wastes if it appears likely in the opinion of the enforcing officer that such wastes can harm either the sewers, sewage treatment process, or equipment, have an adverse effect on the receiving waters, or can otherwise endanger life, limb, public property, or constitutes a nuisance. In forming his opinion as to the acceptability of these wastes, the enforcing officer will give consideration to such factors as the quantities of subject wastes in relation to flows and velocities in the sewers, materials of construction of the sewers, nature of the sewage treatment process, capacity of the sewage treatment plant, degree of treatability of wastes in the sewage treatment plant, and other pertinent factors. The substances prohibited are:
(a) Any liquid or vapor having a temperature higher than 130?F;
(b) Any water or waste containing fats, wax, grease or oils, whether emulsified or not, in excess of 100 mg/l or containing substances which may solidify or become viscous at temperatures between 32? and 150?F;
(c) Any garbage that has not been properly shredded. The installation and operation of any garbage grinder equipped with a motor of three-fourths horsepower or greater shall be subject to the review and approval of the enforcing officer;
(d) Any waters or wastes containing iron, chromium, copper, zinc, and similar objectionable or toxic substances; or wastes exerting an excessive chlorine requirement to such degree that any such material received in the composite sewage at the sewage treatment works exceeds the limits established by the enforcing officer for such materials ;
(e) Any waters or wastes containing phenols or other taste-producing or odor-producing substances, in concentrations exceeding limits which may be established by the enforcing officer as necessary , after treatment of the composite sewage, to meet the requirements of the Commission, or other public agencies having jurisdiction for such discharge to the receiving waters;
(f) Any radioactive wastes or isotopes of such half-life or concentration as may exceed limits established by the enforcing officer in compliance with applicable standards and regulations;
(g) Any waters or wastes having a pH in excess of 10.5;
(h) Materials which exert or cause:
(1) Unusual concentrations of inert suspended solids (such as, but not limited to, Fullers earth, lime slurries, and lime residues) or of dissolved solids (such as, but not limited to, sodium chloride and sodium sulfate),
(2) Excessive discoloration (such as, but not limited to, dye wastes and vegetable tanning solutions),
(3) Unusual BOD, chemical oxygen demand, or chlorine requirements in such quantities as to constitute a significant load on the sewage treatment works,
(4) Unusual volume of flow or concentration of wastes constituting "slugs" ; (i) Wastes removed from septic tanks and cesspools;
(5) Waters or wastes containing substances which are not amenable to treatment or reduction by the sewage treatment processes employed, or are amenable to treatment only to such degree that the sewage treatment plant effluent cannot meet the discharge requirements established by the government.
(1) If any waters or wastes are discharged, or are proposed to be discharged to the public sewers, which waters contain the substances or possess the characteristics enumerated in 12.0410 of this article, and which in the judgment of the enforcing officer may have a deleterious effect upon the sewage works, processes, equipment, or receiving waters, or which otherwise create a hazard to life or constitute a public nuisance, the enforcing officer may:
(a) Reject the wastes;
(b) Require pretreatment to an acceptable condition for discharge to the public sewers;
(c) Require control over the quantities and rates of discharge; and/or
(d) Require payment to cover the added cost of handling and treating the wastes not covered by existing taxes or sewer charges.
(2) If the enforcing officer permits the pretreatment or equalization of waste flows, the design and installation of the plants and equipment shall be subject to the review and approval. of the enforcing officer, and subject to the requirements of all applicable codes, ordinances, and laws. Wastes removed from septic tanks and cesspools may be discharged to the public sewers only under the following conditions:
(a) The Superintendent of the sewage treatment plant is notified, and it is done in the presence of his representative ;
(b) It is done at times and places designated by the enforcing officer.
Grease, oil and sand interceptors shall be provided when, in the opinion of the enforcing officer, they are necessary for the proper handling of liquid wastes containing grease in excessive amounts or any flammable wastes, sand, or other harmful ingredients; except that such interceptors shall not be required for private living quarters or dwelling units. All interceptors shall be of a type and capacity approved by the enforcing officer, and shall be located as to be readily and easily accessible for cleaning and inspection.
Where preliminary treatment or flow-equalizing facilities are provided for any waters or wastes, they shall be maintained continuously in satisfactory and effective operation by the owner at his expense.
When required by the enforcing officer, the owner of any property serviced by a building sewer carrying industrial wastes shall install a suitable control manhole together with such necessary meters and other appurtenances in the building sewer to facilitate observation, sampling, and measurement of the wastes. Such manhole, when required, shall be accessibly and safely located and shall be constructed in accordance with plans approved by the enforcing officer. The manhole shall be installed by the owner at his expense and shall be maintained by him so as to be safe and accessible at all times.
All measurements, tests, and analyses of the characteristics of waters and wastes to which reference is made in this chapter shall be determined in accordance with the latest edition of "Standard Methods for Examination of Water and Wastewater", published by the American Public Health Association, and shall be determined at the control manhole provided or upon suitable samples taken at the control manhole; in the event that no special manhole has been required, the control manhole in the public sewer from the point at which the building sewer is connected. Sampling shall be carried out by customarily accepted methods to reflect the effect of constituents upon the sewage works and to determine the existence of hazards to life, limb, and property. The particular analyses involved will determine whether a 24- hour composite of all outfalls of a premises is appropriate or whether a grab sample or samples should be taken. Normally, but not always, BOD and suspended solids analyses are obtained from 24-hour composites of all outfalls whereas pHs are determined from periodic grab samples.
No statement contained in this article shall be construed as preventing any special agreement or arrangement between the government and any industrial concern whereby an industrial waste of unusual strength or character may be accepted by the government for treatment, subject to payment therefor by the industrial concern.
No unauthorized person shall maliciously, wilfully, or negligently break, damage, destroy, uncover, deface, or tamper with any structure, appurtenance, or equipment which is a part of the sewage works. Any person violating this provision shall be subject to immediate arrest under charge of disorderly conduct.
The enforcing officer and other duly authorized employees of the government bearing proper credentials and identification shall be permitted to enter all properties for the purposes of inspection, observation, measurement, sampling, and testing in accordance with the provsions of this chapter. The enforcing officer or his representatives shall have no authority to inquire into any processes including metallurgical, chemical, oil, refining, ceramic, paper, or other industries beyond that point having a direct bearing on the kind and source of discharge to the sewers or waterways or facilities for waste treatment.
While performing the necessary work on private properties referred to in 12.0426, the enforcing officer or duly authorized employees of the government shall observe all safety rules applicable to the premises established by the company and the company shall be held harmless for injury or death to the government employees and the government shall indemnify the company against loss or damage to its property by government employees and against liability claims and demands for personal injury or property damage asserted against the company and growing out of the gauging and sampling operation, except as such may be caused by negligence or failure of the company to maintain safe conditions as required in 12.0423.
The enforcing officer and other duly authorized employees of the government bearing proper credentials and identification shall be permitted to enter all private properties through which the government holds a duly negotiated easement for the purposes of but not limited to, inspection, observation, measurement, sampling, repair, and maintenance of any portion of the sewage works lying within said easement. All entry and subsequent work, if any, on said easement, shall be done in full accordance with the terms of the duly negotiated easement pertaining to the private property involved.
Any person found to be violating any provision of this chapter, except Article IV, shall be served by the government with written notice stating the nature of the violation and providing a reasonable time limit for the satisfactory correction thereof. The offender shall, within the period of time stated in such notice, permanently cease all violations.
Any person who shall continue any violation beyond the time limit set by the government for correction of the violation shall be guilty of a misdemeanor, and will be prosecuted. Each day in which any such violation shall continue shall be deemed a separate offense.
Any person violating any of the provisions of this chapter shall become liable to the government for any expense, loss or damage occasioned the government by reason of such violation.
The invalidity of any section, clause, sentence, or provision of this chapter shall not affect the validity of any part of this chapter which can be given effect without such invalid part or parts.