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Public Works Department-1981
CITY OF SANDY ELECTRON-lC DOCUMENT ARCHIVING COVER SHEET FOLDER STRUCTURE - ') (Depa [Luent) DOCUMENT NAME: 7 DATE RANGE: 1995-2000 1990-1995 1985-1990 ,,~ 1980-1985 1975-1980 1979-1975 Before 1970 RETENTION: None 10 years 1-year 20 years 2 years ~ Permanent 5 years ._ DISPOSITION OF DOCLrMENT AFTER SCANNLNG: Remm to Depm tment Store at ~'~t- ~ 5/~ Recycle MF MORANDUM FO: FROM: DATE: RE: ROGER JORDAN JOHN LICHTENHELD FEBROARY 18. 1981 PROPOSED CITY ORDINANCE REGULATING CROSS CONNECTIONS TO lHE CiTY WATER SUPPLY SYSTEM The Federal Safe Drinking Act of 1974 and the Oregon Health Division Adminiatrative Rules require that the City, as mater purveyor, insure that the mater supply system is not contaminated by connections to the distribution system. These regulations Further state that the City shall require the installation and maintenance of baekflow prevention devices where the possibility of contamination exists due to a cross connection. Attached you ~ill Find a copy of the state regulations. Since the City is being required to regulate the use of cross connection controls, I think we should have some requirements which are much more explicit and deflined than Lhe state regulations. Attached you mill Find a copy of such ordinances From two cities, and a model ordinance. I am requiring [he installation of cross-connection controls in all Gem construction or remodeling. I am in the process of putting together a list of existing noes ~n the City which should have cross-connection controls. We m}]l then check each of these out to see if they indeed have adequate control. How we handle those that do not will be one problom we have Lo deal mith. Our second responsibility ~ill be to insure the maintenance of all backfllow prevention devices. I now have one person on staff and the necessary equipment to do the necessary work in-house, I plan to have at least two licensed inspectors by the end of the year. It may be a 9cod policy to provide these inspection services Free to all that have baekF]ow prevention dev]ce~;. I am Jn the process nom of setting up a maintenance program where me test all devices once a year. JL:med 333-42-210 HEALTH DIVISION - ADMINISTRATIVE RULES 333-42-215 Section 333-42-210 WATER QUALITY STANDARDS (continued) (7) Laboratory Certification: Microbiological water samples not su~nitted to the Public Heal th Lab- oratory shall be analyzed by a laboratory approved by the Division. (Refer to 333-24-065.) (B) The person performing chemical or physical quality determinations must certify that the analysis was done according to the methods set forth in subsection (6) above. (8) Reporting Requirements: The water purveyor shall submit a summary of the analytical reports to the Division by the 10th day of the following month for any analysis required to be made by this section. In the case of a failure to meet any standards (including failure to comply with sampling frequency requirements) set forth in this section, the report shall be sub- mitted not later than 36 hours after the failure except that a bacteriolog- ical failure shall be reported immediately by telephone. (g) When the water quality is or may be substandard, the Division may notify those persons likely to be served of the deficiencies and advise them of the steps they may take to avoid damage to their health and property. [Publications: The publications referred to or incorporated by reference in this rule are available in the office of the Health Division or Secretary of State.] Statutory Authority: ORS 431.110, 431.130, and 448.205 to 448.325 Hist: Filed and Elf. 2/6/76 as HD 106. Section 333-42-215 CONSTRUCTION STANDARDS (1) Scope: The construction standards apply to con~nunity and public water supply systems and to municipal and public utility water supply sources. Paragraphs marked with an "*" do not ap ll~ munic__i~D_al and public_utility wat~ -sg]~_%e_h]'~ .~-r~clST6h-~- o ~ r~- i s con temp l a ted i n this sec ti on, may be approved provided the water purveyor's engineer satisfies the Division that the deviation will be equal to or superior to the Division's standards. (2) General Requirements: (A) (B) All facilities in contact with ~otable water shall be c__)~, flushed free 6f ~Oh~-~i~d ai~ih~6~a ................. prior to use. ~ tanks, valves, an~e~ig~pmen~_in~endeq for use in~lSer sv%~tems _.~£_._i_te_~_ms o_~:~}~/.used ]n approved potable service shall be allowed. All water system facilities shall be constructed to reliably exclude contamination and withstand imposed physical stresses. 2/1/80 Page 12 333-42-215 HEALTH DIVISION - ADMINISTRATIVE RULES 333-42-215 Section 333-42-215 CONSTRUCTION STANDARDS (continued) (C) *System facilities shall be sized to deliver an adequate supply of water to all users without exhaustinq the source of supply. eap?oved of backflow prevention shall be provided where a~J~ method ntlal cross-connection may exist. __ (El Appropriate provision shall be made for operator access for maintenance and safety. (3) Deep Well Requirements: (Al Land use within 100 feet of a well shall be legally controlled by the water system owner. A distance greater than 100 feet must be provided for a well located downhill from existing or potential sanitary threats. No waste disposal shall be allowed within the prescribed area. No well shall be located closer than 50 feet from a sanitary sewer pipe- line or within lO0 feet of a sanitary sewer force main. (B) The casing shall be of sufficient diameter and straightness to allow easy installation of the pump and accessories. (c) If the well does or may discharge sand, a gravel pack and/or well screen shall be provided to halt sand removal. Trace quantities of sand shall be removed with appropriate facilities in the well house. (D) *The well shall be test pumped for a length of time that will without doubt establish the reliable yield on a sustained basis. The static water level, flow, drawdown, and recovery rate shall be recorded. (El The chemical and bacteriological samples shall be collected near the end of the test pumping sequence. (Fl *The well pump shall be sized and placed at a depth to reliably yield a quantity of water not in excess of the amount established during test pumping. The pump motor and electrical supply shall not be over- loaded at any operating condition. (Gl Line shaft bearings shall be water lubricated. (il The top of the casing shall be fitted with a watertight sanitary seat. The casing vent shall extend up above the sanitary seal and be fitted with a screened return bend. The casing vent for a flowing artesian well fitted with a pump shall allow entrance and escape of air from the casing but prevent the escape of water. (3) *An air line complete with depth gauge or other approvable device shall be provided for determination of the water level in the well during both static and pumping conditions. 2/1/80 Page 13 333-42-215 HEALTH DIVISION - ADMINISTRATIVE RULES 333-42-215 Section 333-42-215 CONSTRUCTION STANDARDS (continued) (El Pipe material shall be at least rated for 150 psi service according to AWWA Standard C101-67, or C104-74, or C106-75, or C108-75, or CllO-71, or Clll-72, or Cl15-75, or C150-71, or C151-71 for cast or ductile iron pipe, or C200-75, or C203-73, or C204-75, or C205-71, or C206-75, or C207-55, or C208-59 for steel pipe or C300-74, or C301-72, or C302-74, or C303-70, for concrete pipe or C400-75 or C401-64 or C402-75 for asbestos-cement pipe or C900-75 for plastic pipe. Plastic pipe may also be at least pressure rated 160 psi as listed by the Nation- al Sanitation Foundation on April, 1975. Plastic pipe potentially sub- ject to pressures greater than 100 psi shall be of a 200 psi pressure rating or greater. Plastic pipe shall not be stored for lonq periods of time in the sun o~where the quality of the plastic may be degraded. PTp-~-~a'e~TT~ff"[i~~-n~erw-~'-~-~F'~gs~ngs shalJ be 'ball joifft .... ductile iron water pipe. Other materials may be approved depending on the degree of hazard and proposed construction. (Fl Pipelines shall be carefully bedded and fully supported in material free from rocks or other rigid objects. Minimum cover shall be 30 inches. Backfill material shall be free of rocks or objects that may cause excessive stress in the pipe. Thrust blocks shall be concrete poured in place against undisturbed material with sufficient bearing to withstand test pressures and peak system pressures. NOTE: The above paragraphs (El and (Fl do not apply to municipal or public utility water distribution systems under these rules. (Gl *Pipeline joints using yarn, lead, or similar materials shall not be allowed. (H) *Provision shall be made for flushing dead-end pipelines greater than 300 feet long which develops a water velocity in the pipe of at least 2.5 feet per second. (i) *A combination air and vacuum relief valve shall be located at each point in the system where excessive air may accumulate. The top valve connection shall be piped up above grade, protected from abuse and fit- ted with a screened return bend. (J) *Taps shall be provided at locations necessary for chlorine disinfec- tion after installation and prior to operation. (lO) 2/1/8o Cross Connection Contro1 *A backflow prevention device shall be installed where a cross connec- tion may exist. Page 20 , 333-42-215 HEALTH DIVISION - ADMINISTRATIVE RULES 333-42-215 Section 333-42-215 CONSTRUCTION STANDARDS (continued) *For community water distribution systems where the following conditions may exist on the user's premises, the device shall be installed in or just ahead of the user's service pipeline or immediately inside the building: (c) (al Where an auxiliary water supply exists which may not be potable. (b) Where any substance is handled under pressure in a manner that may permit its entry into the potable system. This includes process water and water originating from the potable system which may have deteriorated in quality. (c) Where an internal piping cross connection exists that is not cor- rectable or where an intricate plumbing arrangement makes it im- practical to determine whether or not a cross connection may exist. *The type of protection required for cross connection control shall depend upon the degree of hazard as follows: (al Where there is an auxiliary water supply as stated in (al above, the potable system shall be protected by an approved air gap sep- aration or an approved reduced pressure principle backflow pre- vention device. (c) Where a substance that would be objectionable but not hazardous to health, if introduced into the potable system, an approved double check valve assembly shall be provided. Where there is material dangerous to health which is handled in such a manner that may permit entry into the potable system, an approved air gap separation or an approved reduced pressure prin- ciple backflow prevention device shall be provided. Examples of premises where these conditions may exist include sewage treatment plants, sewage pumping ~tations, chemical manufacturing plants, hospitals, mortuaries, plating works, medical clinics, and car washes. 2/1/80 (D) *A protective device required herein shall be a model approved by the Division. A double check valve or a reduced pressure principle backflow prevention device, to be approved, shall be one which has successfully passed performance tests by a reputable testing laboratory eith6r in conformance with standards established by the University of Southern California Engineering Center Report 48-101 of January 30, 1959, or those standards presented in the Manual of Cross Connection Control, Fifth Edition, published by the Foundation for Cross Connection Control research or in the Cross Connection Control Manual, Second Edition, Page 21 333-42-215 Section 333-42-215 HEALTH DIVISION - ADMINISTRATIVE RULES CONSTRUCTION STANDARDS (continued) 333-42-215 July, 1973 published by the Pacific Northwest Section of the American Water Works Association. (El *The requirements set forth in this section are not to be construed as prohibiting local authorities or water purveyors from adopting requirements which are more strict than those set forth herein. (Fl *All presently installed backflow prevention devices which do not meet the requirements of this section but were approved devices for the pur- poses described herein at the time of installation and which have been properly maintained shall, except for the inspection requirements un- der subsection 333-42-235(10), be excluded from the requirements of these rules so long as they satisfactorily protect the water system. Whenever the existing device is moved from the present location or requires more than minimum maintenance or constitutes a hazard to health, the unit shall be replaced by a backflow prevention device meeting the requirements of this section. (Gl *A pit housing a backflow prevention device shall be drained to daylight. Ample space shall be provided for access to and testing a device. (ll) Disinfection Requirements: ~ (Al Disinfection shall be accomplished for new construction or repaired facilities that will contain potable water. (Disinfection is not re- quired for municipal or public utility water distribution system facil- ities under these rules.) (B) Prior to disinfection, the water system facilities shall be cleaned and flushed with potable water. (c) For wells, pumps, valves, and pipelines, a 25 mg/1 solution of free available chlorine shall be prepared and then introduced into the system in a manner that will thoroughly wet all the areas to be disinfected. Any trapped air shall be discharged from the facilities. After 24 hours at least a lO mg/l free available chlorine residual must still exist throughout the facilities being disinfected. Reservoirs and tanks, after being thoroughly cleaned, shall be filled with a 50 mg/1 chlorine solution for 3 hours or a 200 mg/1 solution of free available chlorine may be sprayed or brushed on and allowed to dry for 3 hours or the reservoir may be filled with a 25 mg/1 solution of free available chlorine for 24 hours. (El After the chlorine treatment, the facilities shall be drained and/or flushed with potable water. A reservoir having received the sprayed or brushed on treatment need not be flushed. After flushing, the 2/1/80 Page 22 21.12.350 POTENTIAL CONTAMINATION OF CITY WATER SUPPLY. (Amended by Ordinance No. 145471 passed March 30, 1978) It is unlawful for the owner of property or the user of City water to introduce or permit the introduction of pollution or contamination of any kind into the City water supply system. Whenever cross-connection to other water supply into the City system is found or whenever any other condition is found which presents the possi- bility of contamination or pollution, the water supply to such premises and/or other premises from which cross- connection is made shall be discontinued immediately ~]til the cross-connection is eliminated or the condition remedied. The control or elimination of cross-connections shall be in accordance with any manuals of standard practice pertaining to cross-connection control approved by the Bureau of Water Works, and any requirements set forth by the "U.S. Environmental Protection Agency" as authorized by the "Safe Drinking Water Act" PL 93-523 and subsequent applicable legislation. The Bureau of Water Works shall require a backflow prevention device of pattern, design, and size which it approves as rea- sonably adequate to prevent contamination, if the Bureau determines that a complete physical separation from the City water system is not practicable or necessary, or that adequate inspection for cross-connection cannot readily be made, or that such backflow prevention device is necessary because of existing or possible backflow resulting from special conditions, use or equipment. The Bureau shall also regulate the location, installation, and testing of such device. Any corrective measure, disconnection or change on private property shall be at the sole expense of the person in control of such property. The cost of any change required in the City system outside the property or between the meter and the supply line or distribution system and any charges for cut-off or disconnection shall be added to the charges for water against the premises necessitating the expenditures. ORDINANCE NO. AN ORDINANCE OF THE CITY OF POCATELLO, A MUNICIPAL CORPORATION OF IDAHO, PROVIDING FOR THE ENACT~4ENT OF A NEW CHAPTER TO BE KNO%~ AS CHAPTER 8, TITLE III, REGULATING AND PROHIBITING C~Q~-k"----DRCIAL AND I NDUSTRIAL CROSS-CONNECTIONS TO THE WATER SUPPLY OF THE CITY OF POCATELLO; DECLARING CROSS-CONNECTIONS TO BE A HA2ARD AND PROVIDING FOR THE ABATE~.~ENT THEREOF; PROVIDING DEFINITIOn, S; PROVIDi~{G FOR CO~<TROL ~D USE OF BACKFLOW PREVE~TION DEVICES; PROVIDING THAT TH~-S ORDINANC~ SHALL NOT APPLY TO SI~GLE-F?~:ILY A~D T~O-F?=MILY DWELLINGS; PROVIDING A PENALTY FOR THE VIOLATION OF THIS ORDINANCE; PROV/DING THAT THIS ORDINANCE SHALL BE IN FULL FORCE EFFECT FRObl AND A~TER ITS PASSAGE, APPROVAL, ~ND PUBLICATION ACCORDING TO LAW. of NOW, THEREFORE, be it ordained the City of Pocatello, as follows: Section 1: PURPOSE AND SCOPE. by the City Council The purpose of this ordinance is to protect the public health of water consumers by the control of actual and/or potential cross- connections to c~)~u~er~ical or indust~i~ customers. Section 2: DEFINITIONS. (1) "Backflow" shall mean the undesirable reversal of water or mixtures of water and other liquids, gases or other substances into the distribution pipes of the potable supply of water fIom any source or sources. (2) "Backflow Prevention Device" (approved) - shall mean a device that has been investigated and approved by the regulatory agency having jurisdiction. The approval of backflow prevention devices by the regulatory agency should be on the basis of a favorable laboratory and field evaluation report by an "approved testing laboratory," reco~=mending such approval. (3) "Backf]ow Prevention Device" (type) shall mcan any ~fLee~4¥e device used to prevent backflow into a potable ~;ater systcm. The type of device used should be based on the degree of hazard either existing or potential. (4) "Contamination" - shall mean the entry into or presence in a Public lCater Supply of any substance which may be deleterious to health and/or quality (5) "Cross-Connection" - shall mean any unprotected actual or potential connection or structural arrangement between a public or a consumer's potable water system and any other source or system through which it is possible to introduce into any part of the p6table system any used water, industrial fluid, gas, or substance other than the intended potable water with which the water, industrial fluid, gas, or substance other than the intended potable water with which the system is supplied. By-pass arrangements, jumper connections, removable sections, swivel or change- over devices and.other temporary or permanent devices through which or because of which "backflow" can or may occur are considered to be cross- connections. (6) "Director" - shall mean the Director of Public Works of the City of Pocatello, or his authorized agent. (7) "Hazard, degree of" - shall be derived from the evaluation of a health, system, plum~ing or pollutional hazard. (8) "Hazard, health" shall mean an actual or potential threat of contamination of a physical or toxic nature to the public potable water system or the consumer's potable water system that would be a danger to health. (9) "Hazard, plumbing" - shall mean an internal or plumbing type cross-connection in a consumer's potable water system that may be either a pollutional or a contamination type hazard. This includes, but is not limited to, cross-connections to toilets, sinks, lavatories, wash trays, domestic washing machines and lawn sprinkling systems. Plumbing type cross-connections can be located in many types of structures including homes, apartment houses, hotels and commercial or industrial establishments. (10) "Hazard, pollutional" - shall mean an actual or potential threat to the physical properties of the water system or the potability of the public or the consumer's potable water system but which would not constitute a health or system hazard, as defined. The maximum degree or intensity of pollution to which the potable water system could be degraded under this definition would cause a nuisance or be aesthetically objectionable or could cause minor damage to the system or its appurtenances. (11) "Hazard, system" - shall mean an actual or potential threat of severe danger to the physical properties of the public or consumer's potable water system or of a pollution or contamination which would have a protracted effect on the quality of the potable water in the system. (12) "Health Officer" - shall mean the Southeast Idaho District Health Officer, or his authorized agent. (13) "Potable Water Supply" - shall mean any system of water supply intended or used for human conscription or other domestic use. (14) "Purveyor" shall mean the City of Pocatello, or its authorized agent. Section 3: or maintenance of a which will endanger CROSS-CONNECTIOn, S. The installation c~merciat or indust~-ial Cross-Connection the water quality of the potable water supply system of the Purveyor shall be unlawful and is prohibited. Any such Cross-Connection now existing or hereafter installed is hereby declared to be a public hazard and the same shall be abated. The control or elimination of Cross-Connections shall be in accordance and in compliance with Idaho Regulations Water System 1-8306.01 through 1-8306.08. with this ordinance for Public Drinking The Director shall have the authority to establish requirements more stringent than State regulations if he deems that the conditions so dictate. The Purveyor shall adopt rules and regulations as necessary to carry out the provisions of this ordinance. The Building Official is hereby authorized to enforce the provisions of this ordinance in the inspection of ex~sting, new, and remodeled cum~,,-ro~rc=a'l~f in~.~-i, al bu~la~n~3~' Section 4: USE OF BACKFLOW PREVENTION DEVICES. (1) No cor~ercial or industrial water service connection to any premises shall be installed or maintained by the %~ater Purveyor unless the water supply is protected as required by State law and regulation and this ordinance. Service of %~ater to any premises shall be discontinued by the water Purveyor if a backflow prevention device required by this ordinance is not installed, tested and maintained, or if it is found that a backflow prevention device has been removed, by-passed, or if an unprotected cross-connection exists on the premises. Service wilt not be restored until such conditions or defects are corrected. - 3 - (2) The customer's system should be open for inspection and tests at all reasonable times to authorized representatives of the Purveyor to determine whether cross- connections or other structural or sanitary hazards, including violations of these regulations, exist. When such a condition becomes known, the Director shall deny or i~nediately discontinue service to the premises by providing for a physical break in the service line until the customer has corrected the condition(s) in conformance with the State and City statutes relating to plumbing and water supplies and the regulations adopted purusant thereto. (3) An approved Backflow Prevention Device shall also be installed on each service line to a customer's water system at or near the property line or ir~ediately inside the building being served; but, in all cases, before the first branch line leading off the service line. (4) Backflow prevention devices shall be installed under circumstances including but not limited to the following: (a) Premises having an auxiliary water supply. (b) Premises having Cross-Connections that are not correctable, or intricate planning arrangements which make it impractical to ascertain whether or not Cross-Connections exist. (c) Premises where entry is restricted so that inspections for Cross-Connections cannot be made with sufficient frequency or at sufficiently short notice to assure that Cross-Connections do not exist. (d) Premises having a history of Cross- Connections being established or re-established. (e) Premises on which any substance is handled under pressure so as to permit entry into the Public Water Supply, or where a Cross-Connection could reasonably be expected to occur. This shall include the handling of process waters and cooling waters. (f) Premises where materials of a toxic or hazardous nature are handled in such a way that if back siphonage should occur, a serious health hazard might result. (g) The following types of facilities will fall into one of the above categories where a Backflow Prevention Device is required to protect the Public Water Supply. A Backflow Prevention Device shall be installed at these facilities unless the Purveyor determines that no hazard exists. See IdzJho Regulations for Public Drinking Water Systen~s 1-S306.03. - Hospitals, mortuaries, clinics - Laboratories - Metal plating industries - Piers and Docks - Sewage treatment plants - Food or beverage processing plants - Chemical plants using a %:ater process - Petroleum processing or storage plants - Radioactive material processing plants or nuclear reactors ' - Others specified by the Purveyor (5) The type of protective device required shall depend on the degree of hazard which exists: (a) An air-gap separation or a reduced- pressure-principle Backflow Prevention Device shall be installed where the Public Water Supply may be contaminated with sewage, industrial waste of a toxic nature, or other contaminant which could cause a health or system hazard. (b) In the case of a substance which may be objectionable but not hazardous to health, a double check valve assembly, air-~ap separation, or a reduced-pressure-principle Backflow Prevention Device shall be installed. (6) B~ckf]ow Prevention Devices required ordinance shall be installed under the supervision, the approval, of the Purveyor. by this and with (7) Any protective device required by this ordinance shall be approved by the Director. (8) These devices shall be furnished and installed by arid at the expense of the customer. (9) It shall be the duty of the customer-user at any premise where Backflow Prevention Devices are installed to have certified inspections and operational tests made at ]east once per year. In those instances where the Director deems the hazard to be great enough he may require certified inspections at more frequent intervals. These inspections and tests shall be at the expense of the water user and shall be performed by a certified tester approved by the Director. It shall be the duty of the Director to see that these timely tests are made. The customer-user shall notify the Director in advance when the tests are to be undertaken so that he or his representative may witness the tests if so desired. These devices shall be repaired, overhauled or replaced at the expense of the customer-user whenever said devices are found to be defective. Records of such tests, repairs and overhaul shall be kept and copies sent to the Director. (10) No underground sprinkling device will be installed without adequate Backflow Prevention Devices. (11) Failure of the customer to cooperate in the installation, maintenance, testing or inspection of Backflow Prevention Devices required by this ordinance or by State law shall be grounds for the termination of water service to the premises. Section 5: CROSS-CONNECTION INSPECTION (1) No water shal~ be delivered to any or industrial structure hereafter built within the City of Pocatello or within areas served by City water until the same shall have been inspected by the Purveyor for possible Cross-Connections and been approved as being free of same. (2) Any construction for industrial or other purposes which is classified as hazardous facilities where it is reasonable to anticipate intermittent Cross-Connections, or as determined by the Director, shall be protected by the installation of one or more Backflow Prevention Devices at the point of service from the Public Water Supply or any other location designated by the Purveyor. (3) Inspections shall be made at the discretion of the Director of all buildings, structures, or improvements of any nature now receiving water through the City's system, for the purpose of ascertaining whether Cross-Connections exist. Such inspections shall be made by the Purveyor. Section 6: INSTALLATION PE~4]TS. If Cross- Connection control devices are found to be necessary, the o',.'ner of the property served must apply to the Purveyor for a specific installation permit. Section 7: LIABILITY. This ordinance shall not be construed to hold the City responsible for any damage to persons or property by reason of the inspection or testing herein, or the failure to inspect or test or by reason of approval of any cross-connections. Section 8: disobeys, omits, neglects, the enforcement of any of PENALTIES. Any person who violates, refuses to comply with, or resists the provisions of this ordinance or the rules and regulations as adopted by the Purveyor, shall be deemed guilty of a misdemeanor and, upon conviction thereof, shall for each offense be punished by a fine in any sum not exceeding Three Hundred Dollars ($300.00) or imprisonment for a term not exceeding thirty (30) days, or by both such fine and imprisonment. - 6 Section 9: SEVERABILITY. If any one or more sections, sub-sections or sentences of this ordinance are for any reason held to be unconstitutional or invalid, such decision shall not affect the validity of the remaining portions of this ordinance and the same shall remain in full force and effect. Section 10: EXCEPTIONS. That this ordinance shall not apply to single-family or two-f~ily dwellings. Section ll: That this ordinance shall be in full force and effect from and after its passage, approval and publication according to law. DAqED THIS day of __, 1980. CITY OF POCATELLO, a municipal corporation of Idaho BY: ONE T. HOkROCKS, Mayor ATTEST: PETER B. ~-lcDOUGALL, City Clerk PUBLISHED: - 7 - Sec. 8 (cont.) 8.19 Model Ordinance MODEL OF AN ORDINANCE for the CONTROL OF BACKFLOW AND CROSS-CONNECTIONS Amendments to the (Municipal Water) Code of the City of Chapter .... Section Section 1. CROSS-CONNECTION CONTROL -- GENERAL POLICY 1.1 Purpose. The purpose of this Ordinance is: 1.1.1 To protect the public potable water supply of the City of from the possibility of contamination or pollution by isolating within its customers' internal distribution system(s) or its customers' private water system(s) such con- taminants or pollutants which could backflow or back-siphon into the public water supply system; and 1.1.2 To promote the elimination or control of existing cross-connections, actual or po- tential, between its customer's in-plant potable water system(s) and non-potable water systems, plumbing fixtures and industrial piping systems; and 1.1.3 To provide for the maintenance of a continuing Program of Cross-Connection Control which will systematically and effectively prevent the contamination or pol- lution of all potable water systems. 1.2 Responsibility. The (.Water Commissioner,) shall be responsible for the protection of the public potable water distribution system from contamination or pollution due to the backflow or back-siphonage of contaminants or pollutants through the water service connection. If, in the judgement of said (Water Commissioner.), an approved backflow prevention device is required, at the city's water service connection to any customer's premises1 for the safety of the water system, the (Commissioner) or his designated agent shall give notice in writing to said customer to install such an approved backfiow prevention device at each service connection to his premises. The customer shall im- mediately install such approved device or devices at his own expense; and failure, refusal or inability on the part of the customer to install said device or devices im- mediately shall constitute a ground for discontinuing water service to the premises until such device or devices have been properly installed. · Original draft prepared by Roy O. VanMeter, ~ Aug 69 Revised by the Foundation 1 Oct 72 88 2.1 2.2 2.3 2.4 2.5 2.6 Section 2. DEFINITIONS (Water Commi-$ioner) The (Commissioner) in charge of the Water Depart- ment of the City of is invested with the authority and re- sponsibility for the implementation of an effective cross-connection control program and for the enforcement of the provisions of this ordinance. Approved. Accepted by the (Commissioner) as meeting an applicable specifica- tion stated or cited in this ordinance, or as suitable for the proposed use. Au,,illar¥ Water Supply. Any water supply on or available to the premises other than the purveyor's approved public potable water supply. These auxiliary waters may include water from another purveyor's public potable water supply or any natural source(s) such as a well, spring, river, stream, harbor, etc., or "used waters" or" ndustrial fluids" These waters may be polluted or contaminated or they may be objectionable and constitute an unacceptable water source over which the water purveyor does not have sanitary con- trol. Backflow. The flow of water or other liquids, mixtures or substances under pressure in- to the distributing pipes of a potable water supply system from any source or sources other than its intended source. Rack-liphonage. The flow of water or other liquids, mixtures or substances into the dis- tributing pipes of a potable water supply system from any source other than its in- tended source caused by the sudden reduction of pressure in the potable water supply system. Beckflow Preventer. A device or means designed to prevent backfiow or back- siphonage. 2.6.1 Air-Gap. The unobstructed vertical distance through the free atmosphere be- tween the lowest opening from any pipe or faucet supplying water to a tank, plumbing fixture, or other device and the flood level rim of said vessel. An ap- proved air-gap shall be at least double the diameter of the supply pipe. mea- sured vertically, above the top of the rim of the vessel; and, in no case less than one inch, When an air-gap is used at the service connection to prevent the con- tamination or pollution of the public potable water system, an emergency by-pass shall be installed around the air-gap system and an approved reduced pressure principle device shall be installed in the by-pass system. 2.6.2 Reduced Pre~sure Principle Device. An assembly of two independently oper- ating approved check valves with an automatically operating differential relief valve between the two check valves, tightly closing shut-off valves on either side of the check valves, plus properly located test cocks for the testing of the check and relief valves. The entire assembly shall meet the design and performance specifi- cations and approval of a recognized and City approved testing agency for back- flow prevention assemblies. The device shall operate to maintain the pressure in the zone between the two check valves at a level less than the pressure on the public water supply side of the device. At cessation of normal flow the pressure between the two check valves shall be less than the pressure on the public water supply side of the device, in case of leakage of either of the check valves the dif- ferential relief valve shall operate to maintain the reduced pressure in the zone be- 89 tween the check valves by discharging to the atmosphere. When the inlet pres- sure is two pounds per square inch or less, the relief valve shall open to the at- mosphere. To be approved these devices must be readily accessible for in-line maintenance and testing and be installed in a location where no part of the device will be submerged. 2.6.3 Double Check Valve Assembly. An assembly of two independently operating ap- proved check valves with tightly closing shut-off valves on each side of the check valves, plus properly located test cocks for the testing of each check valve. The entire assembly shall meet the design and performance specifications and ap- proval of a recognized and City approved testing agency for backflow prevention devices, To be approved these devices must be readily accessible for in-line maintenance and testing. 2.7 Contamination. Means an impairment of the quality of the potable water by sewage, industrial fluids or waste liquids, compounds or other materials to a degree which cre- ates an actual hazard to the public health through poisoning or through the spread of disease. 2.8 Cross-Connection. Any physical connection or arrangement of piping or fixtures be- tween two otherwise separate piping systems one of which contains potable water and the other non-potable water or industrial fluids of questionable safety, through which, or because of which, backflow or back-siphonage may occur into the potable water sys- tem. A water service connection between a public potable water distribution system and a customer's water distribution system which is cross-connected to a contaminated fix- ture, industrial fluid system or with a potentially contaminated supply or auxiliary water system, constitutes one type of cross-connection. Other types of cross-connections in- clude connectors such as swing connections, removable sections, four-way plug valves, spools, dummy sections of pipe, swivel or change-over devices, sliding multiport tube, solid connections, etc. 2.9 Cross-Connections _ Controlled. A connection between a potable water system and a non-potable water system with an approved backflow prevention device properly in- stalled that will continuously afford the protection commensurate with the degree of haz- ard. 2.10 Cross-Connection Control by Containment. The installation of an approved backflow prevention device at the water service connection to any customer's premises where it is physically and economically infeasible to find and permanently eliminate or control all actual or potential cross-connections within the customer's water system; or, it shall mean the installation of an approved backflow prevention device on the service line leading to and supplying a portion of a customer's water system where there are actual or potential cross-connections which cannot be effectively eliminated or controlled at the point of cross-connection. 2.11 Hazard, Degree of. The term is derived from an evaluation of the potential risk to public health and the adverse effect of the hazard upon the potable water system. 2.11.1 Hazard -- Health. Any condition, device, or practice in the water supply system and its operation which could create, or in the judgment of the (Commissioner) may create a danger to the health and well-being of the water consumer. An example of a health hazard is a structural defect, including cross-connections, in a water supply system. 90 2.11.2 Hazard -- Plumbing. A plumbing type cross-connection in a consumer's po- table water system that has not been properly protected by a vacuum breaker, air-gap separation or backflow prevention device. Unprotected plumbing type cross-connections are considered to be a health hazard. 2.11.3 Hazard -- Pollutional. An actual or potential threat to the physical properties of the water system or to the potability of the public or the consumer's potable water System but which would constitute a nuisance or be aesthetically ob- jectionable or could cause damage to the system or its appurtenances, but would not be dangerous to health. 2.11.4 Hazard -- System. An actual or potential threat of severe damage to the physi- cal properties of the public potable water system or the consumer's potable water system or of a pollution or contamination which would have a protracted affect on the quality of the potable water in the system. 2.12 industrial Fluids System. Any system containing a fluid or solution which may be chem- ically, biologically or otherwise contaminated or polluted in a form or concentration such as would constitute a health, system, pollutional or plumbing hazard if introduced into an approved water supply. This may include, but not be limited to: polluted or contami- nated waters; all types of process waters and "used waters" originating from the public potable water system which may have deteriorated in sanitary quality; chemicals in fluid form; plating acids and alkalies, circulated cooling waters connected to an open cool- ing tower and/or cooling towers that are chemica y or b o ogically treated or stabilized with toxic substances; contaminated natural waters such as from wells, springs, streams, rivers, bays, harbors, seas, irrigation canals or systems, etc.; oils, gases, gly- cerine, paraffins, caustic and acid solutions and other liquid and gaseous fluids used in industrial or other purposes or for fire-fighting purposes. 2.13 Pollution. Means the presence of any foreign substance (organic, inorganic, or bio- logical) in water which tends to degrade its quality so as to constitute a hazard or impair the usefulness or quality of the water to a degree which does not create an actual haz- ard to the public health but which does adversely and unreasonably affect such waters for domestic use. 2.14 Water -- Potable. Any water which, according to recognized standards is safe for human consumption. 2.15 Water -- Nonpotable. Water which is not safe for human consumption or which is of questionable potability. 2.16 Water -- Service Connections. The terminal end of a service connection from the public potable water system; i.e., where the Water Purveyor loses jurisdiction and sanitary con- trol over the water at its point of delivery to the customer's water system. If a meter is in- stalled at the end of the service connection, then the service connection shall mean the downstream end of the meter. There should be no unprotected takeoffs from the serv- ice line ahead of any meter or backflow prevention device located at the point of delivery to the customer's water system. Service connection shall also include water service con- nection from a fire hydrant and all other temporary or emergency water service con- nections from the public potable water system. 2.17 Water -- Used, Any water supplied by a Water Purveyor from a public potable water system to a consumer's water system after it has passed through the point of delivery and is no longer under the sanitary control of the Water Purveyor. 91 3.1 3.2 Water System 3.1.1 3.2.1 3.2.2 3.2.3 Section 3. REQUIREMENTS The water system shall be considered as made up of two parts: The Utility System and the Customer System. 3.1.2 Utility System shall consist of the source facilities and the distribution system; and shall include all those facilities of the water system under the complete control of the utility, up to the point where the customer's system begins. 3.1.3 The source shall include all components of the facilities utilized in the production, treatment, storage, and delivery of water to the distribution system. 3.1.4 The distribution system shall include the network of conduits used for the delivery of water from the source to the customer's system. 3.1.5 The customer's system shall include those parts of the facilities beyond the termi- nation of the utility distribution system which are utilized in conveying utility- delivered domestic water to points of use. Policy No water service connection to any premises shall be installed or maintained by the Water Purveyor unless the water supply is protected as required by State laws and regulation and this (Code) . Service of water to any premises shall be dis- continued by the Water Purveyor if a backflow prevention device required by this (~ode) is not installed, tested and maintained, or if it is found that a backflow prevention device has been removed, by-passed, or if an unprotected cross-con- nection exists on the premises. Service will not be restored until such conditions or defects are corrected. The customer's system should be open for inspection at all reasonable times to authorized representatives of the (?ater Department) to determine whether cross-connections or other structural or sanitary hazards, including violations of these regulations, exist. When such a condition becomes known, the (Com- missioner) shall deny or immediately discontinue service to the premises by providing for a physical break in the service line until the customer has corrected the condition(s) in conformance with State and City statutes relating to plumbing and water supplies and the regulations adopted pursuant thereto. An approved backflow prevention device shall also be installed on each service line to a customer's water system at or near the property line or immediately in- side the building being served; but, in all cases, before the first branch line lead- ing off the service line wherever the following conditions exist: 3.2.3.a In the case of premises having an auxiliary water supply which is not or may not be of safe bacteriological or chemical quality and which is not acceptable as an additional source by the (.CommissionerI , the pub- lic water system shall be protected against backflow from the premises by installing a backflow prevention device in the service line appropriate to the degree of hazard. 92 3.2.3.b In the case of premises on which any industrial fluids or any other ob- jectionable substance is handled in such a fashion as to create an actual or potential hazard to the public water system, the public system shall be protected against backflow from the premises by installing a backflow prevention device in the service line appropriate to the degree of hazard. This shall include the handling of process waters and waters originating from the utility system which have been subject to deterioration in quality. 3.2.3.c In the case of premises having (1) internal cross-connections that cannot be permanently corrected and controlled, or (2) intricate plumbing and piping arrangements or where entry to all portions of the premises is not readi;y accessible for inspection purposes, making it impracticable or impossible to ascertain whether or not dangerous cross-connections ex- ist, the public water system shall be protected agaihst backflow from the premises by installing a backflow prevention device in the service line. 3.2.4 The type of protective device required under subsections 3.2.3a, b and c shall de- pend upon the degree of hazard which exists as follows: 3.2.4.a In the case of any premises where there is an auxiliary water supply as stated in subsection 3.2.3.a of this section and it is not subject to any of the following rules, the public water system shall be protected by an ap- proved air-gap separation or an approved reduced pressure principle backflow prevention device. 3.2.4.b In the case of any premises where there is water or substance that would be objectionable but not hazardous to health, if introduced into the public water system, the public water system shall be protected by an approved double check valve assembly. 3.2.4.c In the case of any premises where there is any material dangerous to health which is handled in such a fashion as to create an actual or poten- rial hazard to the public water system, the public water system shall be protected by an approved air-gap separation or an approved reduced pressure principle backflow prevention device. Examples of premises where these conditions will exist include sewage treatment plants, sewage pumping stations, chemical manufacturing plants, hospitals, mortuaries and plating plants. 3.2.4.d In the case of any premises where there are "uncontrolled" cross-con- nections, either actual or potential, the public water system shall be pro- tected by an approved air-gap separation or an approved reduced pres- sure principle backflow prevention device at the service connection. 3.2.4.e In the case of any premises where, because of security requirements or other prohibitions or restrictions it is impossible or impractical to make a complete in-plant cross-connection survey, the public water system shall be protected against backflow or back-siphonage from the premises by the installation of a backflow prevention device in the service line. In this case, maximum protection will be required; that is, an approved air-gap separation or an approved reduced pressure principle backflow preven- tion device shall be installed in each service to the premises. 93 3.2.5 Any backflow prevention device required herein shall be of a model and size ap- proved by the (Water Comissioner) The term "Approved Backflow Preven- tion Device" shall-t:nean a device that has been manufactured in full conformance with the standards established by the American Water Works Association en- titled: AWWA C506-78 Standards for Reduced Pressure Principle and Double Check Valve Backfiow Prevention Devices: and, have met completely the laboratory and field performance specifications of the Foundation for Cross-Connection Control and Hydraulic Research of the Uni- versity of Southern California established by Specifications of Backflow Prevention Devices -- #69-2 dated March 1969 or the most current issue. Said AWWA and FCCC&HR standards and specifications have been adopted by the (Water Commissioner) Final approval shall be evidenced by a "Certifi- cate of Approval" issued by an approved testing laboratory certifying full compli- ance with said AWWA standards and FCCC&HR Specifications. The following testing laboratory has been qualified by the (Water Commis- ~.ioner) to test and certify backflow preventers - Foundation for Cross-Connection Control & Hydraulic Research University of Southern California University Park Los Angeles, California 90007 Testing laboratories other than the laboratory listed above will be added to an ap- proved list as they are qualified by the (Water Commissioner) Backflow preventers which may be subjected to back pressure or back siphon- age that have been fully tested and have been granted a Certificate of Approval by said qualified laboratory and are listed on the laboratory's current list of "Ap- proved Devices" may be used without further test or qualification. 3.2.6 It shall be the duty of the customer-user at any premise where backflow preven- tion devices are installed to have certified inspections and operational tests made at least once per year. In those instances where the (Water Commissioner) deems the hazard to be great enough he may require certified inspections at more frequent intervals. These inspections and tests shall be at the expense of the water user and shall be performed by the device manufacturer's representative, by (_Water Department) personnel or by a certified tester approved by the (Water Commissioner) It shall be the duty of the (Water Commissioner) to see that these timely tests are made. The customer-user shall notify the (Commissioner) in advance when the tests are to be undertaken so that he or his representative may witness the tests if so desired. These devices shall be re- paired, overhauled or replaced at the expense of the customer-user whenever said devices are found to be defective. Records of such tests, repairs and over. haul shall be kept and made available to the (Water Commissionert 94 3.2.7 All presently installed backflow prevention devices which do not meet the re- quirements of this section but were approved devices for the purposes described herein at the time of installation and which have been properly maintained, shall, except for the inspection and maintenance requirements under subsection 3.2.6, be excluded from the requirements of these rules so long as the (Commis- sioner) is assured that they will satisfactorily protect the utility system. When- ever the existing device is moved from the present location or requires more than minimum maintenance or when the (Commissioner) finds that the main- tenance constitutes a hazard to health, the unit shall be replaced by a backflow prevention device meeting the requirements of this section. 95 MEHOI/ANDUM ~ub je~ L: Ilayer aim City Council Gr'egor~ E. DiLoreto, P.[. and P.L.S. September 9, 1982 Revision off Standard Specil'Jcations and Standard Drawings In an atLempt to bt'lng out' npecificaLion~ into agreement with tho Standard .~p~c~ ~cat~on~ of the Oregon State tlighway I)JvlsJor, arid the American Public IJor'k~ Associa~ion~ ~ogekher with my professional experience, [ would like Lo i'evi~ [t~e City of Sundy'~; Standard Specifications as follows: 8iHE[ I~. SII)LWALKS AND SIORM SEWilRS [?hange the minimum requiL-ed thickness off '~;ub-bose or base course from as allowed i~ the ~974 Standard Specifications, Oregon Highway (page C-14, SecLiorl 5-05 City of %andy (C.O.S.)) SANI[ARY SEWER SYSII[1% Z. [~c'move thc ruqu[z'erTier~t for ti~e mn~bnum duplh of 6 Feel for t~unitury sewers tf areas wJ[hou~ b[~,;emenL[~)epopLmeoL of' [nvironmcnkal Quality (I)Eq) ['u~es :~ate minimum depU~ of' ~sani[ar~ sewei's [~hall be J fee[. Professionaliy, I see no reason for thc 6 Foo~ depth, nor doe~ [t~z City building official. page B-5 See 2.06 (C.II.S. ;' ~. Add to the .~;pecLf~eatiohu th,' allowance ol o laser for use in aligrlmen~ and grade of' ~;ew{~r line~;, lhe use of la,;ers provides For better aligomenL and qrade, allows For ea~;ier cona~ruetlon~ and in turn, will be less expen- sive to ec~isLrucL :;t.wt.z"4. Ibc savings will be passed cfi Lo the city. (page }-27, Section 7.03 Add th~, t-eguirer,~(nL*,~ For hvdrontotic and air tesls for PVC gpaviky :;unitary seuert;, line city t, llows the ut;e of' I'Ve p~pe For sanitary sewers; hovever~ we do no[ ,,~pe( [fy a rnc~hod of Lc,,;kinq ~hern. J [ANDARD DRAUINGS b. Allow ttne contractor to substitute an eguivalent depth of 1"-0" cruslned ~ock lot the 2 inci~e~; of J~4"-O" and 7" off 1!~"-0'' crushed rack. Most rock planks in the area crush I"-0" since that ia what the Skate of Oregon uses t~n their highway~s (I)ra~;~ing No. 2, Il, 12, '.?.ILS.)) Change the depth of' sideualks from 4" ta ~.." and driveways fram 6" to R~vision oF qfsndard SpeciFications ~ Dramings September 9, 1982 Page 2 F!_~". Contractors use f'inioh lumber, ie. 2" x 4" measures 1~'' x )~" and ~ 2" x 6" measures 1!~'' x 57. Portland Cement Association has informed ~e ~here ]s almost no lo~s ~n strength by th~ ]2 inch reduction. (Dra~ing No. 2, 5, ~, S, O, 9, (C.O.S.)) 7. Change the exposure aL the concrete approach on driveways From -: to 1" and on t~heelchair ramps From 1" to ~i". lhis still alloms for an overlay itl the Future. (I)~awiog No. 8, 9) 8. Encase the entire pipe mhether it is waLer pipe, se~er pipe or storm drain in either select gravel or sand to a distance of 6" above the pipe. Ibis alloms For better support oF tl~e pipe. (Draming No. 15, Ordinary BackFill) I therefore request tile Council's support of' these changes, so that I may revise our specifications. ¸jo IROM: DALE: [][: ALL PI RSONNEL JOHN L [CHTENHELD NOVEMBER 20~ 1981 TELEPHONE I'AUER FOR PUBLIC ~',~OId(S ~,'JEEK-END DUTY [~eeause oF contact problems we have had miLh the GE voice pagers~ a telephone page is nom available and will be carried by the duty person on meekends and altec hours. ]o contacL person with pager, dial 248-8768. ~.]hen 'beeped'~ the person is to call Alpine Ambu.lanee, so ~eave a message Lhere also; (Alpine: 668-~16). .]L:med HEMORANDUM May ]7, 1979 To: From: Subject: Mayor and City Council Roger Jordan, City Manager% PUBLIC WORKS Ef~ERGENCY COMMUNICATION In response to problems that have occurred during hours when the City Hall is closed, t have had an emergency communication system set up for the Public Works Department. The primary em- phasis is to insure that when we have a major problem with our water system we can respond to the problem 24 hours per day, 7 days per week. In addition, it will give individual customers a method of discussing a problem during the hours that City Hall is closed. The system works in three parts. The first phase is the contract with Alpine Ambulance Company for emergency phone answering ser- vice during times when City Hall is closed. After our new moni- toring system is completed, the alarm system will also be ter- minated at the ambulance company, where it can be monitored as a part of the answering service. The second phase is the in- stallation of a phone answering device in City Hall which will explain the hours of City Hall, allow for messages to be left, and direct customers with an emergency to call our' answering service. The third and most important part of the system is the acquisition of individual paging equipment for a weekend and evening duty person, responsible for handling an emergency situation. Hopefully, our new system will insure that we can handle any Public Works emergency which might arise at all times in the City. Any Council member who has an emergency call for the Department should call our answering service number: 668-6090. jb [,1LNOI(ANDUM f.lareh 6, ]980 5uOjec~: John Lichtenheld, Public Works Director Roger Jordan, City Manager i ~. COLBR SL'ttlHE FOR ALL PUBLIC WORKS EQUIPHENI As )ow are aware, the City Council approved your requested color scheme For t:ne painting oF all Public Works vehicles. Please ensure that. all new Pub].[c Uorks equipment conf'orms to the new painting scheme ~hic~ ~as approved by Lhe CouncL1, which includes a cream colored vehicle ~ith a tan insert and, vhen possible, a mhite top. Ihs C1ty seal shall be placed ~ithin the tan insert. Please also ensure that any vehicle uhich is possible shall be r~_~pain!e] Lo con',urm ~i[h this standard. ?,tracheal ts a rendition ol thc color scheme which shall apply to ail Public Uorks equLpment Jn the future. Jb ~ttachment Utility Servide Van All the advantages of a Service Body... All the advantages of a Van... §5% more work/cargo area... 3750 I~. payload capacity... Optional compartmentation packages for special applications... M[MORANDUM Decembe¥ lO, [979 Subject: Roger ,}ordan, City Manager John Lichtenheld, City Engineer SANIIAltY SEWER SMOKE IESI STUDY Due to the recent heavy rains, the sewage treatment plant has experienced increases tn ~ts irff'luent over a million mgd From its normal dry weather load of 350,000 mgd. lhis dramatic increase occurs within 4 or ~ hours after a heavy rainfall, and indicates that storm runoff is entering the sanitary se~e[' system. Some increase in Flea can be expected as a result of infiltration, but the magnitude of this increase suggests direct storm ~ater conneutions such as roof drains. Ihe taut comprche~,utve tenLing of the sanitary sewer system was completed ]n ~973 by M.G. Boatmright & Associates. Some of the problems identified as a result of this study have been rectified, but there is no record of what mas done or ~ha[ is yet to be completed. Uob tlornsby and I haw, Uiscussed the pruulem~ and we both Feel that elim- inating tile storm mater connections and infiltration will help extend the uapacity of the existing waste treatment Facility, and if done in house, ~ould be a very co.'~t-efFective means of delaying the need for expansion of the current treatment plant. /\ "umeke test" of' tile sanitary se~er system will indicate (1) roof drain con*lections, (Z) service line leaks, (3) manhole leaks, (~) faulty plumbing, and (5) storm sewer conmoctions. We do have the necessary equipment to co,lduct tile tests, and Bob has agreed to mork ~ith the Public Works crem in providing the necessary manpower. I estimate that it ~ill take 330 mac hours, which me could program over a period of a yea~ o~ tree. fhe best time to uonduul the tests ~ould be in the drier months of the year. lhe study ~ould be broken domn in cmo phases. Phase I (primary) would cover the older section of' the city and involve 120 man hours. The second phase (secoiMat'y) of' Ehe study would involve the newer parts of the city, excluding aubdivzsions which have been constructed within the past tree years~ and would take approximately 210 hours. Prior to initJat~ng such a study ourselves, I have some unanswered questions: t, lu the project of nlajor priority? 2. Should me employ the services of a consultant or conduct the study our- I)o we have sul'FJcicnt funds Lo remedy t~he )roblems uncovered concs~'ning f.h~' cit. y's pouLlon of' '.he se~e~ sys~.em? What auLho~iLy doss [.lie city have ill Yequz~'iug improvements ~hich volve f)rivaLe prope~'Ly? (! am ama['e of '.;ecLion 5 Resolution No. ~20 which proh~biL'.; su['face ma~er connections to the sanitary se~er system.) !'d like Lo gel LooeLher wiUI you and Bob in Lhe nexL week or so Lo discuss t he p['oblem. jb cc: Bob tlorrlsby MEMORANDUh John ~ichLenhcld, City Eng~ueer I-'iJBLI{ WORKS' SNOU P',OV[NC PROCLDURE iho (}ity iu !'usponsible to~' ploeing and sandirlg ail roadways ~ithin ~he ~ity 1tm:its; ex?ept 1,~ Proctor and P~Ol~eer Boulevards. 1he Public Works F;iOU hiVC ~'{~t~l~ ass~(jllod [0 Olde 0~' [hree B-hour shills and one rotated ~eekly. th{ ,.~i,~L .louder ~hou!d [~e cou[ac~ed. ;~i' tht~ W.u%k_~o/___gt~.~L!!EL~7_. _Lt~?u~t~;Z___4, Lhe Following personnel have been h i i ! Phone ':,mlb~' l iuut"s 5t,i f'b Leader Number Run [oyooka 663-3046 SLeve Hackey 668-7572 Vic Padr[a 283-2333 tie :hJ[; hou['s wit ]'emuiu t. he wall~e each ~uek, bu[ personnel ~ill roba[c; ~;u to iii i)o not [fi;iJ ~ach wc~k as lo Lhe proper people t.o contact. PROPOSAL ~he undersigned hereby proposes to f'urnish materials, labor and equipment necessary for thc constructioo of a 12-inch sanitary sewer line in strict accordance with the plans and specifications as prepared by the City of Sandy, For the prices set forth in the Schedule of Contract Prices listed beiow (#4), and agrees Lo be bound by the form of Contract Agreement attached to the epeci£ications. The following quantities given below in the Schedule of Contract Prices are for the convenience of the bidder in estimating proposed prices, and for comparison of the total bid amount only. IL is understood tha~ the actual payment will be based on units of materials delivered and in place, at the unit price bid in the Schedule of Bid Prices. fhe undersigned agrees, if awarded the contract, to execute and deliver to [he City of Sandy, within five (~) working days after signing tt~e con- tract, a satisfactory performance bond, in the amount of 100% of the bid contract. 4. Schedule of Contract Prices: a. Site preparation, lump sum b. Sewer: (1) 12-inch semer, 800 L.F.~ Furl',ish and place native back Fill L.F. Each (2) 8-loeb sewer, 2~0 L.F., Furnish and place (~) 2 - 48-inch M.H. average 8-10 Feet deep fhe eogineer w~ll set reference points and elevations necessary For the contractor to perform his work properly. Name of Firm: By: Incorporated in State: Telephone Number: WORK SUMMARY FOR PUBLIC WORKS Month of ~ INCOME: $ I~ ~ '"' Water collectons for units $ ~0~ '- Sewer collections for ~ units $ '"7.~ /- ~. ~'" Engineering and inspection fees CONNECTIONS: 4 Water meters installed Sewer connections LINE EXTENSIONS: LF of water lines LF of sewer I ines LF of I;Z storm lines SWEEPING: CID#4 '~ times Cove Area ~' times Residential areas ~1~ Bluff Road ~ times times OTHER COMMENTS: Minor repairs Major repairs ROAD GRADING - VEHICLE MAINTENANCE: City finds alternatives/or funding new equipment hy DAN DILIA)N Two years ago the city of Sandy told its residents that it v, as in dire financial straits There was a lack of ~'ity otfi('iaLs said the path back to financial stability ~t~uid be difficult and budget.~ with minimal capi~l passed by voters. But the city Iatcr, nearly ~e entire fl~t tff public works vehicles has the Sandy Senior Center ~s derhqg where all the money came from if the city was in such bad fL~cal sha~:. "F2ven though you're ?n'~'~ just mainlining ~sie ,mvices.' City Manager l%ger Jor~n tom Tbe P~. "We used to ~ repairing for An cxalBhlation of where the monies came from that Imrchased the new equip- ment shov, s that the city hasn't necessarily pulled a fast one on its residents. It has followed a ~arefully-laid plan to replace its rolling stock before it wore out and, in most cases, has suc- ceeded. The city purchased a 1980 utility truck to serve for the overall program to improve the water system. Its pur- chuse was financed through the Water Improvement Fund. The vehicle it replaced, a 1963 Chevrolet with more than I00,000 miles, had questions raised about tis reliability, according to Jordan. Its mahqtermnce cost also exceeded the monthly payments necessary to purchase a new truck. "The new one has all the t.hhqgs needed to fix the system in an emergency," Jordan said, "It reflects an hqcrease, too, hq ollr system." The city also replaced a 1972 half-ton 4x4 truck, purchased from the state of of a new truck. So, the city pnrchased a new flat bed truck with funds sharing. Jordan explained that some jobs need the iuL'ger truck, such as tratding pipe. hi thc pa.st the city bad used ils dump track for those tasks, but it wa5 impractical. Now the flat heal ~kes the clump truck's place on minor jobs, and according to which bids are now out, will replace a sweeper that Jordan says costs the city M.~ per year "just to keep it running.' The new sweeper, with a agreement, is being ~id for by revenue sharing also. The new sweeper won't have the high maintenance costs and Jorda~ antici~tes it will last six yeurs. The city sweeps the stree~ twice a week, The Senior Center's oew van was a johqt pm'chase. A grant from the Area Agency co Aghqg, local money raised town of 3,000, but our actual Oregon. That "needed more by the center itself anti :.crxiee is to u town of about repairs than th,~ benefit it money from the city's ecu- 4 (~l" was to the city. I~ re.ir tingencv fund. ............ CIIY OF SANDY DEPARTMENT OF PUBLIC WORKS STANDARD DRAWINGS SANDY OREGON FEBRUARY, 1980 OF ~AN Dg' ~-I'AN PARD C) I~AW 1 NI \ / 0 Do 0 0 ~0 0 0 o oF' COAN r~ ~' S'TAN DA RD E)I~AWl N G Ng. ~. I SEE OWG. HO. ~ FOR TYP. SECT~Or~ L .... L..~,i~ of' £ xcovallon'"~ OF' I- 0 ',,d C'__I'T¥ OF CO,~ND'1' "~)-i-ANr'.'~ARD O~A'v'Vlr4G Ha. 6 ,{~ 4 ,,. PLAW V'~EW CITy oF coAN r~ '~ x~,/O ~ ~, '~ 'o ~o 0 \ / CI'TY OF (-~ I -f- ¥ OF -I FIvE REFLECTORS MIH 3"DIA. RED PRISMATIC REFLECTOR ~ OT[ R.'LJLS TO BE PAINTED BLACK WITti V,'HITE STRIptr$-FOSTS F'AI:; T [ O WHITE-PORTION C RC:U~D TREATED 5/r." GALVANIZED e0LTS/RAI L/ POST POST ' · ~-rA N DA P-, D O~,'?AW I N Ca NO. ~0 ~,kC K',:' I L L IM c~" ~- US '/. (~OMPAC'I'IOIM OF '; YPlCAL P,~,V F_t,~ EM T 5~_CTIOM LCu~ in A.C. povement ll~l! I:* m~de wllh spode lype povemeni breoker,spode lipped drop hemmer, c~tln9 w~el,concrste sow Or ot~r app~ed method.~nte~1ttant punchi~ ~Jth a po[~ lock hommer bit ~illn~permitted. C. ITY OF Sr.Z.~ ~,,,q~.. ~o. 'iA ~ I~ '-- I.Cul in A.C. povemenf sholl be mode with epode type povement breoker~spode tipped drop hOmmer, cufling wheel, conc~,~te IOI or O~r oppr~ed metho~me~iltonf pu~hi~ .ith o poini~ ]ock hammer bit ~ill n~ ~ pard.ed. CITY OF S]-A N DA I:~ D [~)RAW l N G ~'~0. I~. PUBLIC_ ;~&V I%IONC~ -;YP~CAL P,~VEt4 Efq T ~CTIOM LCut in A.C. povemen~ shall be made with spade type povement breoker,$pode lipped drop hammer, cutting wheel,concrete sow or other appr~ed method. Intermlttant punchlr~g with o pointed lock hammer bit will no~ be permitted. 2. Curt ~n p.c..c, pavemenl iholl be.mode .it~ a coocrete la~. CiT'f OF PIPE ~000 PSI CO.C,. I:'0~ ~¢E i'41kl. 4-~ELO'A/ PIP~_ CLA55 A COKfCRETE ~E. DDING i"~:_ PIpE 3/4'-0" ..C. LA%S B SELECT CLASS O STANDARD .6EDDII~G C. IT¥ OF DE P-T. 0 F 'x.~O R H, '~ t._EtqG'T~ AG ~wDICATE::D ON PL~.N$ ~' ' :~ ~ '." ': .'~ ~/ ~'"t... ~ .~:' ", /. , '.~.- '~', ~ ~ '. . ..~ . 6hC~tO~ A-A ~z' ~m~ ~ . CONCRCTE ENCASEMEN~ · I / ~ , CSELEC~ MA~ER~AC P~CED ~ ORDINARY ~ACKFIL~ ,~.~'TANDAP, D ~]R^WlNG Ix~. IS oF- ~1 ~ Cocporat/on .! stop on 4§° an~le N/th straight coupling outs Muellet No. H-15000 or approved equal. NOTE., See single ~vater service de/a/? for addffional dimens/bns. Curbs 8f~nch cor~n~c~o~ M~ellef No. H-15~5~ ~ op~ved equal gr~nd key angle stop nut~ or app~v~ ~al. Lo~k~n~.t??e. C ~ 'r ',r oF' TEE PLUGGED CROSS BEND NOTES: I. 2. ;5. PLUGGED CROSS TEE Concrete thrust blocking to be poured against undisturbed earth, Keep concrete clear of ioint and accessories. The required lhrust beorlng areas for sp. ecloI connections ore shown encircled on the plans: e.g.(~) indicates 15 square feet bearing oreo required. 4. If not shown on plans required bearing, areas al fittinq shall be os indicated below, adjusted if necessary,to conform to the test pressure(s) and allowable, soil bearing stress(es) stated in the special specifications. 5. Beorlng areas o~d special blocking details shown On plo~ls toke precedence over bearinG areas end blocking details shown on this standard detail. BEARING AREA OF THRUST BLOCKS IN Sq, FT~ Fit- Tee, Wye 90'°Bend Tee Plug- 45° 22-1/2° II-I/4° hng PI~9 or Plugged ged an Bend Bend Bend Size Co p Cross Run 4 ].0. 1.4 1.9 1.4 1.0 ------ 6 2.1 ;5.0 4.3 ;5.0 1.6 1.0 8 ;5.8 5.;5 7.6 5.4 2.9 1.5 1.0 I0 5.cj 8.4 II.B 8.4 4.6 7~,4 1£ 8.5 12.0 17.0 12.0 6.6 ;5.4 1.7 i4 11.5 16.;5 Z;5.0 16.;5 8.9 4.6 2.5 16 5.0 21. 3 ;50.O ~-I .3 116 6.0 .~.0 I 8 19.0 27 .0 ;58.0 27.0 14.6 7.6 ;5.8 20 2;5.5 3;5.;5 .47.0 53.3 18.1 9.4 4.7 ~4 34.0 48.0 68.0 48.gl ~62 NOTE: Above bearing areas based on res1 pressure of 150 ps.L and on allowable soil bearinG stress of 2,000 pounds per square foot. To compute bearing o~eos for different test pressures and soll bearing stresses, use the follo~ing equation= Beorhg o~eo= [Test Pressure/150) x(2000/Soil Beo¢Jng Stress) z(Tobl~ Value). .~TAN PARD [~)RAV,/1N G P F~CbX/t D~-- ~TFIM ~KT~.klc~ON CiTY oF C.~T¥ OF IRON oF ~-rAN PARD DRAWl N P~ ~10. ?.,'~ p~: P T. oF PUBLIC '-,.~o P K ~ ~TE: ~_ I I~0 FI Eb R,E j Oi i..Fr~' 45° BE~q c~--. COklC. Et EDD~IG IF tN GF~A'VEL. S]REET F'L~,CE ~-~ ~,/C. OR C0i'4C. PA.¥Eh4ENT IiM 4' DIA,.. CIRCLE &ROUND CLEA,.~-OU]'. %LOPp__ A¥..~/~y FROM CLEAM-OUT A~[ A h'~lkl. 5LOPE OD I" PER FC.~OT, CITY OF' -~AN rD"f ',-~'TANI'2ARID [DRAWING ~%~. ~4 wo~ ~ ~ ....... L_:.c.! 8° ~ FRAM[ ~ ~OOC PSI .~" SECTION C 0 ~ic. ~&5~ PLAN 'T¥ pi co/ 5~4ELF f'o,- "I-',/p c ~D' Sim'~[clr, ~x, ccpt DroD5 MANHOLE NOTE5 UHLE55 COMP&CED P,E~A:I41NG RIMG5 ~ CONF.. ~ORIAR ALL JOl~5 'TO 5CA, L.E. P'REC AG'T COMC. G~ ~in ~ EC'~ION ~5-[5 '~ooo P5,1 .~.x SECTION cok~C. Z. PLACE ~ STEF50VE~ OuT LE~ MIME .~00o PSI .~ECTION C-G Pt 4,14 oF' ~'~AN Dh' _I E L EVA'TIO,"4 MANHOLE .~TEP PROv~OE ~; %"ECuRELY H'4cjTALL COt. lC. PLUG C O M P/kC."~ E E) · MAKINOLE '5'T UI5 OUT NOTE No-J- ~ ,,.MANHOiLF_ F RAI, AE ~. C OVER F WAT E R'T I GH'T MA, NNOLE. FRAHE. e,, COVER ~'~IT'~' OF ~AN D"f .~'TANDARD Or:tAWING [~1;:). ~.9 SECTION A- A C FBAME AND GRATE DETAIL SECTION C-C £: EvA-l' '.ON B- B CI'T¥ OF SAN D'f [)E P~'. oF PUBLIC__ DITCH _.~.~ U S E EXISTINO FRAME B GRATE , INSTALL C'2 6" O.C. INLET RAISED TO MAKE CATCH BASIN NC). ~0 · -'-----FINISH GRADE S TAI.,;DAR D MANHOLE, FRAI, ilE~ COVER, CONE~ ¢¢ SECTIONS, DRAIN ROCK 48' DIA, i6" TYPICAL SUMP DE 'i'AIL c. ~ ~> .... - ~ SL :P LINING DETAIL C'~ I q- '~ OF eOAN L::' '"( ,~'_'J'T A N r~ A RD -INFILT RATION TESTS BY A QI,.C.LIFIED SOILS' ENG[NEER SHALL 'VARIFY SOIL'S E, UITABILtT Y FOR SUNUP INSTALLATION. J¢ FERFOR A-~D N~,[~'DLE SECTIONS (BOTTOM C~ PiPE TO BOTTOM C,~.' SUMP) PER MULT- NOMAH COUNTY ~CS. SUMP LIN- ING REQUIRED. LINE INSIDE OF PERF, RISERS WITH FABRIC FILTER- S~DES AND BOTTOM .AS SHOWN (MIRAFI 140). FILL TO 90TTOM OF LOWEST PEER RISER WITH CLEAN DRAIN ROCK.. DRAIN ROQ'( SET ON UNDISTURBEZ) MATERIAL. MO'~ t. CO,'-~.CR~'T~. : ~©00 P,% I. SECTION 5EC¥10N C-C >t° SECTION ~-E$ ;~'l'A N r2A R D [~)RAWl N G -~/~G"CN ~.JM :.}:,.1 o