DESIGN STANDARDS AND SPECIFICATIONS

Transcription

1 DESIGN STANDARDS AND SPECIFICATIONS Virgin Valley Water District 500 Riverside Road Mesquite, Nevada Phone: (702) Fax: (702) REVISION: JUNE 2016

2 TABLE OF CONTENTS Page No. SECTION 1 INTRODUCTION AND GENERAL PROVISIONS GOVERNING IMPROVEMENTS Enactment Standards, Rules and Regulations Deviations, Additions, Deletions, and Alterations Approval and Acceptance Applicable Laws and Standards No Waiver Due Diligence and Investigation Advice of Professionals Private Property Water Availability Headings and Terms Severability SECTION 2 DEFINITIONS Water Main Classifications Service and Connection Classifications SECTION 3 IMPROVEMENT PLAN REQUIREMENTS AND SUBMITTAL A. General B. Plan Requirements C. Plan Review Procedures D. Plan Revisions E. Plan Approval F. Final Inspection Procedures G. Record Drawings H. District General Notes I. Deviation from Design Standards and Specifications, Substitutions J. Procedure for Obtaining Approval of a Proposed Substitution SECTION 4 WATER SYSTEM CAPACITY AND PRESSURE A. Capacity B. Water Pressure C. Pressure Modeling Requirements D. Minimum Pressure and Fire Flow

3 TABLE OF CONTENTS (continued) VIRGIN VALLEY WATER DISTRICT Page No. SECTION 5 MATERIAL STANDARDS AND HANDLING A. Standards B. Product Handling C. Corrosion Protection SECTION 6 WATER MAINS, INFRASTRUCTURE, AND APPURTENANCES A. Design and Construction B. Materials C. Design Criteria D. Execution of Work E. Appurtenances F. Covering Uninspected Work SECTION 7 SERVICE LATERALS AND RELATED IMPROVEMENTS (1- INCH TO 2-INCH) A. General B. Materials C. Design Criteria D. Execution of Work SECTION 8 FIRE HYDRANTS, VALVES, AND APPURTENANCES A. Materials B. Design Criteria C. Installation D. Tests SECTION 9 BACKFLOW AND CROSS CONNECTION REQUIREMENTS A. General B. Backflow and Cross Connection Requirements C. Specific Facilities Where Backflow Protection is Required SECTION 10 TESTING AND DISINFECTION A. General B. Filling, Drainage, and Air Relief of Mains C. Pressure and Leakage Tests D. Repairs

4 TABLE OF CONTENTS (continued) VIRGIN VALLEY WATER DISTRICT Page No. E. Disinfection and Cleaning of Potable Water Lines F. Chlorine Concentrations G. Final Flushing H. Water Quality Testing I. Procedure after Cutting into or Repairing Existing mains J. Fireflow Testing SECTION 11 TEMPORARY CONSTRUCTION WATER A. Construction Water from Public or Private Fire Hydrants B. Payment for Damages

5 SECTION I VIRGIN VALLEY WATER DISTRICT INTRODUCTION AND GENERAL PROVISIONS GOVERNING IMPROVEMENTS Enactment. Pursuant to action by the Board of Directors of the Virgin Valley Water District (the District ), originally taken on or about January 10, 1996 and as amended thereafter, these Design Standards and Specifications (herein Design Standards ) shall govern the design and construction of water systems, improvements, and facilities in the Virgin Valley Water District Service Area. Standards, Rules and Regulations. All parties involved in the development or improvement of real property in the District s service area are urged to carefully review and must act at all times in compliance with these Design Standards as well as all other District rules and policies including, but not limited to, the District s Rules, Regulations, and Rates. Deviations, Additions, Deletions, and Alterations. All improvements must be made in strict accordance to approved plans. After receiving plan approval no deviations, additions, deletions, alterations, or other changes shall be made without first obtaining approval from the District. Approval and Acceptance. The District s final approval and acceptance of any improvements does not constitute and shall not be interpreted to mean that the District certifies, warrants, guarantees, verifies, endorses, ratifies, confirms, sanctions or otherwise represents that any improvements, or portions thereof, are free of defects, flaws, faults, errors, mistakes, or other problems. Under no circumstances shall the District be liable for any property damage, injury, or other harm that occurs arising out of or in any way relating to the improvements made by any owner, contractor, developer, person, or entity even if such improvements were made in conformance with these Design Standards and even if the District inspected or approved the improvements. By, among other things, submitting plans for approval and proceeding with improvements, the developer, owner, or other party making improvements in the District s service area agrees to and shall be required to indemnify and hold the District harmless from any and all liability, damages, claims, and demands of every kind arising out of or in any way relating to the improvements. Applicable Laws and Standards. In addition to the District s Design Standards and other rules, those involved in the development or improvement of real property shall comply at all times with all other applicable laws, regulations, and standards. Neither compliance with these Design Standards nor receipt of any approval from the District relieves a person from complying with any and all other applicable laws, regulations, and standards. If some other regulation, standard, or law is more strict or stringent than a provision of these Design Standards, the more strict or stringent regulation, standard, or law shall apply. No improvements shall commence until all proper permits, licenses, and other 1-1 SECTION 1 REVISED JUNE 2016

6 approvals have been provided. Where these Design Standards require the owner or developer to take certain actions, the owner or developer shall ensure that all such actions are taken by appropriately licensed contractors and professionals, as applicable and as required by law. No Waiver. To the maximum extent allowed by law, neither the District s failure to insist upon the timely and complete performance of any requirement nor the District s waiver of any particular provision of these Design Standards shall be construed thereafter as a waiver of any other or subsequent failure to comply. Due Diligence and Investigation. A person making improvements in the District s service area shall conduct reasonable due diligence and investigation of the real property on which the improvements will be located and shall take such appropriate additional measures as may be reasonably warranted in light of the nature of the property, soil conditions, or other unique features and shall plan for, receive approval of, and make the improvements in accordance therewith. Such additional measures may include, but are not limited to, appropriate drainage and erosion protection. Advice of Professionals. The District urges all parties engaged in or considering real property development in the District s service area to consult with appropriate advisors including, but not limited to, architects, contractors, engineers, and other professionals to ensure an understanding of and compliance with these Design Standards. Parties are urged to conduct reasonable due diligence and investigation before proceeding. Dedication of Facilities and Infrastructure. To the maximum extent permitted by law the District is not responsible for any facilities, improvements, infrastructure, pipes, or other portion of a water system unless the District has expressly accepted the dedication of such facilities, improvements, infrastructure, pipes, or other portion of a water system in writing, signed by an authorized District representative, and in accordance with District policies. Water Availability. The District shall not be liable nor found to be in breach of any obligation or expectation to supply water which arises from any circumstances outside the reasonable control of the District, including but not limited to, any of the following: reasonably unforeseeable changes in water supply, water system break or malfunction, pipe or pump failure, inadequate runoff, poor quality, accident, injury, emergency, lack of power or fuel, act of God, the elements, drought, climate change, fire, flood, strikes, riots, terrorism, the public enemy, or any other reasonably unforeseeable event or other circumstances outside the District s reasonable control. No liability shall attach to the District for any failure to accurately anticipate or estimate the quantity or availability of water supply. Additionally, circumstances may arise at any time such that it may become necessary for the District to ration, conserve, or otherwise curtail water service and the District shall not be liable for acting in response to such circumstances. Headings and Terms. Captions and headings are used for reference only and shall not be used in construing or interpreting these Design Standards. As used in these Design 1-2 SECTION 1 REVISED JUNE 2016

7 Standards, the singular shall include the plural (and vice versa) as the context may require. Severability. In the event any portion of these Design Standards is ever declared by a court of competent jurisdiction to be invalid or unenforceable such portion shall be deemed severed from these Design Standards and the remaining parts of these Design Standards, including without limitation the remaining parts of the paragraph of which the invalid or unenforceable portion was a part, shall remain in full force and effect as fully as though such portion had never been part of these Design Standards. Questions or comments regarding these Design Standards should be directed to: General Manager Virgin Valley Water District 500 Riverside Road Mesquite, Nevada (702) Fax: (702) END OF SECTION SECTION 1 REVISED JUNE 2016

8 SECTION II DEFINITIONS VIRGIN VALLEY WATER DISTRICT As used in these Design Standards and Specifications, unless the context requires otherwise and regardless of whether the term is capitalized, the following definitions apply: Applicant shall mean the person, owner, developer, business, or governmental agency making application for water service to a parcel within the District s authorized service area or who has applied for, received approval of, or is working to complete improvements in the District s service area. Application shall be a written request for water service as distinguished from an inquiry as to the availability of, or charges for, such service. Board means the Board of Directors of the Virgin Valley Water District. CCPW means Clark County Public Works Commercial Building shall mean any building, structure or facility or a portion thereof, devoted to the purposes of trade or commerce, such as a store or office building. Conditional Commitment for Water Service (CCWS) shall mean a conditional commitment by the District to provide water to an owner/developer of property within the District s service boundaries who has complied with all applicable conditions and has paid all appropriate fees as outlined in the District s Rules and Regulations. Construction Water shall mean water delivered through other than a standard service connection for construction purposes. Contractor shall mean an individual, firm, corporation, partnership or association duly licensed by the State of Nevada to perform the type of work to be done under the Permit. The obligations of a developer or owner as set forth in these Design Standards shall also apply to a contractor working for, on behalf of, or by agreement with an owner or developer. Cross Connection shall mean any actual or potential connection or structural arrangement between the District's water system and any other source or system through which it is possible to introduce into any part of the District s water system any substance other than potable water intended to supply the water system. NAC 445A.6581 Customer means a person or persons who receive water service from the District. 2-1 SECTION II REVISED JUNE 2016

9 Developer shall mean any person or entity engaged in or proposing development of real property, including the owner of the property.. The developer is responsible for ensuring that all development complies with the standards, specifications, regulations, and other provisions of these Design Standards. Where these Design Standards require the developer to take certain actions, the developer shall ensure that all such actions are taken by appropriately licensed contractors and professionals, as applicable and as required by law. Development shall mean a parcel of real property being improved and requiring installation of water mains to and possibly on the property including, but not limited to, the following: subdivision, PUD's, parcel map developments; new building construction Multi-family, commercial and industrial additions or remodels which may result in an increase in the historical water usage for the property. District shall mean the Virgin Valley Water District. Easement shall mean an acquired legal right for a specific use of land owned by others. EDU shall mean Equivalent Dwelling Unit. An EDU is based on a 3/4" meter serving an individual residence. Employee shall mean an individual employed by the District excluding independent contractors, consultants, and their employees. Engineer means, except where referring to an engineer hired by or working for a party other than the District, the designated professional engineer retained by or working for the District or any of the Engineer s duly authorized representatives. An engineer working for, on behalf of, or by agreement with an owner or developer shall comply with and ensure that the owner or developer acts in compliance with these Design Standards. Idler shall mean a length of pipe or spacer installed in lieu of a meter. Improvement shall mean a permanent addition to or betterment, construction, installation, alteration, reconstruction, repair or other improvement to real property normally involving the expenditure of labor or money and designed to make the property more useful or valuable. Inspector shall mean an individual designated by the District to inspect facilities which are the subject of these Design Standards and Specifications. An inspector may or may not be an employee of the District. Inter-Connection shall mean any actual or potential connection to customer piping which will provide water service to property or permit use of water facilities for purposes other than that for which a service connection was authorized. 2-2 SECTION II REVISED JUNE 2016

10 Law is any statute, rule or regulation established by Federal, State, County or Municipal authorities. Living Unit shall mean any residence, apartment, or other structure to be occupied for habitational purposes by a single person or family and requiring water service. Water Main Classifications: Off-site Main shall mean a main, regardless of size, which extends from the existing water system to a development but excluding on-site mains. On-Site Mains shall mean those public mains which are installed specifically to provide service to developments, and generally located within the development's boundaries. Public Mains shall mean those mains which are owned, operated and maintained by the District after completion and acceptance. Private Mains shall mean all water mains not owned by the District after completion (e.g., water mains and appurtenances that the District has not expressly accepted the dedication of in accordance with District policies). May is a term used to indicate that something is permissive (compare to "shall"). NAC means the Nevada Administrative Code. NRS means the Nevada Revised Statutes. Owner shall mean a person who holds legal title to the property or who is under contract to purchase the property. The owner of the property being developed is responsible for ensuring that any development of the owner s property fully complies with the standards, specifications, regulations, and other provisions of these Design Standards. Where these Design Standards require the owner to take certain actions, the owner shall ensure that all such actions are taken by appropriately licensed contractors and professionals, as applicable and as required by law. The owner of the real property being developed or improved may be referred to herein as the developer, even though the owner is not actively or directly involved in the development. Permit shall mean any written authorization required pursuant to this or any other regulation of the service area for the installation or operation of any water works. Person shall mean any individual, firm, association, organization, partnership, trust, company, corporation or entity, and any municipal, political or governmental corporation, district, body or agency other than the District. 2-3 SECTION II REVISED JUNE 2016

11 Premises shall mean an individual residential or commercial unit or property served by the water system. Private Fire Protection shall mean service through a line to fire hydrants used to extinguish accidental fires not located within a public dedicated and accepted right-ofway. Notwithstanding any other provision of these Design Standards or any other District policy, the District is not responsible for testing, certifying, or maintaining public or private fire hydrants. P.U.E shall mean public utility easement Service Area shall mean the boundary of the Virgin Valley Water District as defined by Assembly Bill 608 adopted by the 1995 Legislature and such other areas which may be included by resolution adopted by the District Board. In general, the service area includes Mesquite City, the Town of Bunkerville, and unincorporated area in the Riverside area. Service and Connection Classifications: Combined Water Service shall mean service connections through which water is obtained for the dual purpose of fire protection and domestic use. Commercial Service shall mean service connections to include, but not limited to, office buildings, private clubs, motels, hotels, department stores, restaurants, clubs, schools, etc. Domestic Service shall mean service connections through which water is obtained for all purposes exclusive of fire protection, but including residential, commercial, and industrial uses. Emergency Service Connection shall mean a temporary service connection required to provide water service to safeguard health and protect private or public property, subject to the conditions governing temporary service connections. Interim Services shall mean non-permanent connections for water service for use during the construction of subdivisions, other construction projects, and in certain instances for emergency service. Non-Standard Connection shall mean a service connection installed at a location not adjacent to the property served and where there will never be a main installed contiguous to the property. Private Fire Service shall mean a service connection through which water is delivered to private property for fire protection exclusively. 2-4 SECTION II REVISED JUNE 2016

12 Residential Service shall mean the water piping, meter, meter box fittings and valves from the main to a customer in a single family dwelling, mobile home, building, or in an individual flat, condominium or apartment in a multiple family dwelling or building or portion thereof occupied as the home, residence or sleeping place for one or more persons. Service Lines shall mean the lateral pipe from the point of connection to a District water main to and including the piping curb stop valve and/or meter box. Standard Service Connection or Permanent Service Connection shall mean a service connection installed at a location adjacent to the property being served. Temporary Service Connection shall mean a service connection installed at a location not adjacent to the property served and which is subject to removal or relocation at such time as a main is constructed. Shall is a term used to indicate that something is mandatory (compare to "may"). -END OF SECTION- 2-5 SECTION II REVISED JUNE 2016

13 SECTION III VIRGIN VALLEY WATER DISTRICT IMPROVEMENT PLAN REQUIREMENTS AND SUBMITTAL A. GENERAL Pursuant to NAC 445A.66685, all water works and projects must be designed and completed in compliance with: 1. NAC 445A to 445A.6731, inclusive. 2. The American Water Works Association Standards, as adopted by reference in NAC445A Standards 14, 42, 44, 53, 54, 55, 58, 60 and 61 of the American National Standards Institute and NSF International, as adopted by reference in NAC445A Recommended Practice for Backflow Prevention and Cross-Connection Control, as adopted by reference in NAC445A Recommended Standards for Water Works, as adopted by reference in NAC445A The Uniform Plumbing Code, as adopted by reference in NAC445A Any other engineering standards approved by the Division of Environmental Protection of the State Department of Conservation and Natural Resources. B. PLAN REQUIREMENTS Improvement plans for water works construction shall conform to the following requirements and include the following information: 1. Plans shall demonstrate the adequacy of the proposed water works improvement to meet the needs and conform to the District s water system; 2. Plans shall comply with NAC 445A (as applicable); 3. Plans shall provide the details of all improvements to be made, all work to be performed, and complete specifications supplementing the plan; 4. Plans shall demonstrate satisfaction of all requirements for fire flow and fire demand. 5. Plans shall be prepared on 24 x 36 sheets. 6. A plan and profile is required for all distribution water mains. 3-1 SECTION III REVISED JUNE 2016

14 7. The plan and profile scale shall be a minimum of 1" = 50' horizontal and 1" = 5' vertical or as approved by the District s Engineer. Details shall be drawn to a scale that clearly shows all existing conditions and work to be performed. 8. Plans shall indicate phasing and shall include a street and utility index map showing the location of all water mains, valves, flush valve assemblies, air release valves, fire hydrants, pumping facilities, service laterals, meters and other water system appurtenances. 9. The plan cover sheet must include: a. Name, address and telephone number of the Owner/Developer and Design Engineer. b. District General Notes (See Section III, H) c. Vicinity Map d. Legend e. Bench mark with datum and basis of bearing f. Sheet index g. A.P.N., and address if associated with a permit application for a structure h. Approval block for signature and date for the following: i. Mesquite City or Clark County Public Works Director ii. Mesquite City or Clark County Engineer iii. Mesquite Director of Development Officer iv. Mesquite City or Clark County Fire Prevention Officer v. Virgin Valley Water District General Manager vi. Overton Power District vii. Rio Virgin Telephone Company viii. Virgin Valley Disposal Inc. 10. The location of all water service lines, meter boxes, curb and curb stop for each lot in the subdivision or parcel map development shall be shown on each plan sheet. 11. Plans shall indicate dimensions of right-of-way and easements at least once on each plan/profile sheet. 12. Plans shall show all existing utilities, curb and gutter, sidewalk, paving, traffic signing, miscellaneous improvements and property lines. The plans shall clearly indicate, on plan and profile, the distinction between existing conditions and proposed improvements. 3-2 SECTION III REVISED JUNE 2016

15 13. Plans shall indicate any relocation and/or removal of existing improvements in conflict with the proposed improvements and shall show removal and replacement of any curb & gutter, sidewalk, paving, signing, utilities, or other existing improvements. 14. Plans shall indicate dimensions from street centerline or control line to all existing and proposed mains. All valves, hydrants, flush valve assemblies, air release valves and service lines shall be stationed and dimensioned from street centerline or control line. 15. Plans shall include all details in conformance with these "Design Standards and Specifications" as adopted by the Board, necessary for the construction. 16. All plans shall be prepared, stamped and signed by an engineer registered in the State of Nevada. See NAC 445A C. PLAN REVIEW PROCEDURES An owner, developer, or other person seeking to make waterworks improvements must do the following: 1. Submit two sets of plans along with a completed application for service. All subsequent submittals, including those addressing District comments and requirements, shall be accompanied by a transmittal letter that identifies the development by name, address, A.P.N., and the reason for the submittal. 2. Submit two wet stamped sets of plans for review per the State of Nevada guidelines. The District s Engineer will review the submittal and will prepare any comments to be addressed by the developer s design engineer. The developer s engineer shall make revisions to the plans based on the District s review comments. The design engineer shall include the utilities redlines and an engineer's cost estimate with the re-submittal. Upon obtaining approval from the District, the design engineer shall furnish two sets of wet stamped plans. 3. Submit plans for water service lines relating to a building permit. The District General Manager or the District s Engineer will review the plans and will prepare any comments to be addressed by the developer s design engineer. Upon addressing the comments and requirements of the District, the design engineer shall submit wet stamped corrected plans and the District's redlines for final review and approval. Upon obtaining approval from the District, the design engineer shall furnish two sets of wet stamped plans. 3-3 SECTION III REVISED JUNE 2016

16 4. Before construction begins, the developer shall submit three complete sets of shop drawings in accordance with the design engineer s specifications, including layouts, elevations and details. D. PLAN REVISIONS Following the District s approval of any plans, any modifications to the plans shall also require District approval. At least 14 days prior to commencing any construction associated with the desired changes, the developer or developer s design engineer shall submit to the District for review two sets of proposed plans detailing the desired revisions and shall conform to the review and comment process set forth in section 3-C. All revisions shall be identified with a Delta symbol, date of change, description of change, and the name or initials of the person making the change. Revisions of the same date shall have the same Delta symbol letter or number. The revised areas shall be clouded on the drawings and tagged with the corresponding Delta symbol. The revised plans shall include an approval block for signature and date by the District. Construction associated with the desired revisions shall not commence until the District has approved the revisions in writing. E. PLAN APPROVAL No plans will be approved unless they demonstrate that the improvements will comply with these Design Standards. Upon receiving the District s approval of the plans, the developer shall deliver two (2) sets of the fully approved plans to the District. Construction shall not commence until two sets of such fully approved plans have been delivered to the District. The District s approval of a plan shall expire if construction does not begin within one year of the date from the final signed approval. The District s approval of a plan, including any modifications thereto, shall be effective for one year from the date the original plans were fully approved. A developer may seek an extension for more than one year if the developer demonstrates that construction is continuing and if the developer has provided the District with a schedule of work and updates on the progress of the construction. No extension shall be valid unless approved in writing and signed by an authorized employee of the District. A developer s renewal of a Conditional Commitment for Water Service, as applicable, and pursuant to the District s Rules, Regulations and Rates does constitute approval of an extension for an additional year. F. FINAL INSPECTION PROCEDURES Final approval of any water works improvement shall be subject to a final inspection by the District to determine if the construction has been performed in substantial compliance with the plans approved by the District. 1. Within 14 calendar days from the completion of all construction of the water works improvement, the developer shall submit a written request for a final. By making the 3-4 SECTION III REVISED JUNE 2016

17 request for inspection, the developer warrants and certifies that the water works improvements have been completed in substantial compliance with the approved plans. 2. The developer shall submit documentation demonstrating compliance with and satisfaction of all required testing including, without limitation, a system fire flow compliance certification test performed by a certified third-party tester. 1 The fire flow compliance certification test shall include pressure and flow rate. The developer shall provide a copy of the test certification to the local fire authority. 3. Upon final inspection, the District may prepare a correction punch list and the developer shall make such modifications necessary to appropriately address the punch list items. After properly addressing and remedying the punch list items, the developer shall submit a request for inspection of the changes or additions required by the punch list. By making the request for inspection, the developer warrants and certifies that all punch list items have been properly addressed. 4. Upon completion and/or correction of all punch list items and the District s final approval, the developer shall deliver to the District reproducible record drawings in accordance with Section H below. The District s final approval and acceptance shall not be interpreted to mean that the District certifies, warrants, guarantees, verifies, endorses, ratifies, confirms, sanctions or otherwise represents that any improvements, or portions thereof, are free of defects, flaws, faults, errors, mistakes, or other problems. Under no circumstances shall the District be liable for any property damage, injury, or other harm that occurs associated with any improvements made by an owner, contractor, developer, person, or entity even if such improvements were in conformance with these Design Standards and even if the District inspected or approved the improvements. G. RECORD DRAWINGS After the District s final approval and acceptance of the improvements, the developer shall deliver to the District reproducible record drawings. The developer shall include with the record drawings a transmittal letter identifying the development by name, address, and A.P.N. and stating the reason for the submittal. The record drawings shall be 24 x 36 paper copies and prepared and signed by a Nevada registered engineer or surveyor. The developer (or design engineer) shall also provide the District with one copy of the record drawings in electronic format with NAD 83 State Plane, 1 Notwithstanding this or any other provision of these Design Standards or any other District policy, the District is not responsible for testing, certifying, or maintaining public or private fire hydrants. 3-5 SECTION III REVISED JUNE 2016

18 Nevada East (U.S. Feet) projected coordinates in AutoCAD.dwg file format on CD, flash memory drive, or other digital storage device. The record drawings shall include the following: 1. Centerline stationing and dimensions from street centerline or easement line for all water valves, hydrants, meter boxes, flush valve assemblies, air release valves, check valves, booster pump stations and pressure reducing stations. 2. Stationing and dimensions for all private fire hydrant and sprinkler line installations are required from the main to the check valves only. 3. Operation and maintenance information and dimensions for all specialty items such as pressure reducing water tanks, altitude pressure reducing valve stations, water tanks, altitude valves and booster pump stations. 4. The design engineer or surveyor shall place a certification on the drawing stating that the record drawings accurately reflect items (1) through (4) above, to the best of their knowledge and belief. The record drawings shall readily identify any and all deviations of the actual improvements from the approved plans. By submitting the record drawings, the developer warrants and certifies that the water works improvements have been completed in substantial compliance with the approved plans and any deviations have been clearly marked and identified on the record drawings. H. DISTRICT GENERAL NOTES The developer shall comply with all of the conditions stated in the notes and shall cause the following notes to be shown on the cover sheet of all construction drawings or on a separate sheet designated General Agency Construction Notes, which shall be included with all construction drawings: Virgin Valley Water District Notes: 1. All water system design, construction, use, and operation shall conform to the Virgin Valley Water District s Design Standards and Specifications; the District s Rules, Regulations and Rates; and applicable laws. 2. The location of the water service lateral where it passes under the curb shall be marked and identified by inscribing a W in the top of the curb or by inserting a brass tag marked W in the top of the curb. Services shall be shown on Record Drawings. The 3-6 SECTION III REVISED JUNE 2016

19 water service laterals shall be placed no more than 5 feet and no less than 1 foot from the adjacent property line unless approved in writing by the Virgin Valley Water District. 3. Distribution water mains shall be installed with a minimum 42-inches cover below finished grade except where indicated otherwise on the plans with specific proposed cover shown and approved in writing by the Virgin Valley Water District. 4. Before making any connection to an existing water main or taking any other action that will interrupt existing water service, the property owner, developer, or contractor shall first obtain written approval from the Virgin Valley Water District. Any requests for approval of service interruptions must be made at least 48 hours before making the desired connections. Any necessary interruption in existing water service shall be during the time of least inconvenience to the District s customers. No interruption of service shall be for more than four (4) hours during any 24-hour period. At least 48 hours in advance, the owner, developer, or contractor shall also notify all District customers who will be affected by any service interruption. 5. Approval of the Virgin Valley Water District shall be obtained for any temporary construction water use from an existing fire hydrant. In order to obtain approval for temporary construction water use, an application must be submitted to the office of the Virgin Valley Water District in accordance with the District s Rules, Regulations & Rates. Any unauthorized use of or connection to the District s water system constitutes an improper and illegal use of water service and shall subject the unauthorized user to all remedies, fines, and penalties provided under Virgin Valley Water District Ordinance No. 1; the District s Rules, Regulations & Rates; and as otherwise permitted by law. 6. No excavation shall be performed prior to the marking in the field of all buried water infrastructure. The owner, developer, or contractor shall notify the Virgin Valley Water District at (702) at least two (2) working days prior to excavating so that buried water infrastructure can be marked. 7. The owner, developer, or contractor shall confirm by field measurement and by excavation exploration the location and elevation of all existing water facilities and infrastructure. 8. The owner, developer, and contractor hereby certify that the existence and location of water facilities as shown on these plans were obtained by a search of available records. To the best of their and the design engineer s knowledge, the existing water facilities and infrastructure are as shown on these plans. The Virgin Valley Water District shall not be responsible for any error in the identified or actual location and elevation of the existing water facilities and infrastructure. 9. No revisions shall be made to the water system shown on these plans without the prior written approval of the Virgin Valley Water District. Proposed design revisions to these plans must be submitted in duplicate for District approval in accordance with the District s Design Standards and Specifications no later than 14 days prior to commencing construction. 3-7 SECTION III REVISED JUNE 2016

20 10. Any request for inspection (intermediate and/or final) must be made to the Virgin Valley Water District at least 24 hours prior to the time of the requested inspection by calling (702) weekdays between 8:00 a.m. and 4:30 p.m. or (702) weekdays between 6:30 a.m. and 3:30 p.m. The District shall also be notified at least 24 hours prior to beginning construction. 11. The owner, developer, or contractor shall provide the District with a duplicate copy of the delivery tickets for all pipe, valves, hydrants, and water system appurtenances supplied for construction of the water system in connection with any inspection. 12. Pipe deflections for short radius curves and angle points shall not exceed the manufacturer s specifications and shall normally be accomplished by means of standard fittings, the locations of which shall be detailed on the plans. 13. Prior to being placed into service, all new water lines shall be tested and disinfected in accordance with Section IX of the Virgin Valley Water District s Design Standards and Specifications. Any request for testing must be made to the District at least 24 hours prior to the desired time of testing for the new system. Any costs associated with the bacteria analysis or otherwise shall be billed to and paid by the developer. No line shall be connected to the District s water system unless it has first been tested and found to be free of contamination. 14. Approved backflow prevention assemblies shall be installed and tested for all irrigation and private fire services in accordance with the Virgin Valley Water District Cross- Connection Control Policy as set forth in the District s Rules, Regulations, and Rates. All private fire services shall submit fire flow test documentation certified by a third party contractor for flow and pressure It is the intent of these specifications and improvement plans that the contemplated work, construction, or improvements result in a complete operating water system in conformance with the Virgin Valley Water District s water system and in substantial compliance with the requirements of NAC 445A.66695; the District s Design Standards and Specifications, and the District s Rules, Regulations and Rates, as applicable. Any questions regarding the stated or implied meaning of these plans shall be immediately directed to the developer s design engineer. 16. Any and all living units shall be provided with a pressure regulator, class 150 (minimum). 17. Before water service begins, the developer shall first obtain approval of the completed water system construction by passing a final inspection conducted by the Virgin Valley Water District. Any request for final inspection must be made at least 24 hours prior to the desired time of inspection. The completion date of the project and the start of any applicable warranty period shall be subject to the satisfying the conditions of all 2 Notwithstanding this or any other provision of these Design Standards or any other District policy, the District is not responsible for testing, certifying, or maintaining public or private fire hydrants. 3-8 SECTION III REVISED JUNE 2016

21 correction punch list items resulting from the District s final inspection, and the submittal of the record drawings prepared by the developer s design engineer of record. 18. Water meters must be purchased through the Virgin Valley Water District. Installation of water meters must be by the District, except as authorized in writing by the District. Requests for water meter installation should be made at least 24 hours prior to the desired time of installation. 19. Construction shall not commence until two (2) sets of fully approved construction plans have been provided to the Virgin Valley Water District, prepared in accordance with the District s Design Standards and Specifications and the District s Rules, Regulations and Rates. 20. Easements, where identified and as allowed by the Virgin Valley Water District, are required whenever the water main, service lateral, meter, backflow assembly, or any associated appurtenances are not located in a public right of way. All easement types and locations shall be identified on the water plan, as well as any area(s) dedicated as public utility easements to be occupied by water facilities, to facilitate field verification. The District is not responsible for any portion of a water system unless the District has expressly accepted the dedication of such system (or portion) in writing, signed by an authorized District representative, and in accordance with District policies. 21. No construction or other obstruction shall limit the Virgin Valley Water District s direct access, from the adjacent or nearest right of way, to the meter assemblies, backflow prevention assemblies, or piping appurtenances. All trees, shrubs, decorative rocks, block walls, fence materials, grade, and other materials shall be designed and constructed so as not to interfere with the District s easements or hinder the District s access to and maintenance of any part of the District s water system or facilities. 22. The area within an easement shall be graded to provide drainage away from the vault and/or backflow prevention assembly (ies) to prevent water from pooling near enclosures, vaults, or other District appurtenances. 23. The contractor shall install a pressure regulating device(s) if required under NAC 445A I. DEVIATION FROM, SUBSTITUTIONS Prior to proposing any substitution of material, products, thing or service, owners, engineers, builders, contractors, developers, and others desiring water service from the District shall satisfy themselves that the material, product, thing or service proposed is, in fact, equal to that specified by the District. Any approved substituted material, product, or thing shall fit into the space allocated; shall afford comparable ease of operations, maintenance and service; and shall be equal in appearance, function, size, quality, and longevity. Any cost savings, reduction in construction time or similar demonstrable benefit caused by the substitution of such material, product, thing or service shall be consistent with and not impair the District s mission, purpose, or operations. 3-9 SECTION III REVISED JUNE 2016

22 The District s approved standards and specifications (including any approved substitutions) shall not constitute or be implied as the District s guaranty or warranty that such standards and specifications are free of defects or are suitable for the owners or developers intended use. The District shall not be liable for any damage or injury arising from the use, adherence, or implementation of any standard, specification, or approved substitution. The burden of proving the equality and suitability of a proposed substitution for a specified material, product, thing, method, or service shall be on the party requesting it. Such party must support the request with sufficient test data, documentation, evidence, and other means to permit the District s General Manager, District Engineer, or other District agent to make a reasonably thorough evaluation and a fair and objective decision on the merits of the request. Drawings, samples, data, certifications, and other relevant information or documents relating to the proposed substitute shall be submitted to the District for review. The District will determine in its reasonable discretion whether a proposed substitution is equal in quality, utility, and economy to that specified. No substitution will be allowed which will increase the cost of operation or maintenance to the District or which is otherwise incompatible with the District s system or operations. As applicable, the party requesting the substitution shall demonstrate that the requested substitution of material, service, or method is fully supported by all applicable certifications, authorizations, accreditations, endorsements, and other standards including those of any governmental agencies having jurisdiction over the use of the specific material, service, or method. Substitutions will not be permitted where the proposed substitution provides no material benefit and is intended to merely accommodate artistic design, specific non-essential functions, or limited economy of maintenance. Any District approval of a substitution shall not relieve the owner, engineers, builders, contractors, developers or others from responsibility for complying with all other requirements of these Design Standards and Specifications. The District shall not be responsible for any expenses associated with any changes that may be necessary to other parts of the project as a result of using an approved substitution. Additionally, even if the District approves one substitution request, the District shall not be required to approve any subsequent or associated substitution request. The party making the request shall be responsible for investigating all implications of using the desired substitution and should submit all substitution requests at the same time, especially where one substitution may impact or conflict with the District s other standards and specifications. The party requesting the substitution bears all risk of unintended consequences of implementing the substitution. The District reserves the right to reject any subsequent request for substitution, even if prior approval was given, if the District obtains additional information or subsequently discovers sufficient cause to reject any new request or further implementation of a previously approved substitution SECTION III REVISED JUNE 2016

23 J. PROCEDURE FOR OBTAINING APPROVAL OF A PROPOSED SUBSTITUTION Any party who wishes to use any material, product, thing, method, or service other than those specified by the District shall submit a written request for substitution accompanied by all relevant data, documents, and information to enable the District to objectively evaluate the request. Failure to provide such documentation or information shall result in a rejection of the substitution request. The District s General Manager, the District s Engineer, or other authorized District agent shall determine whether the requested substitution is equal, in the opinion of the District, to the specified material, product, thing, method, or service. Substitution requests shall be submitted with the party s first submission of plans or as soon thereafter as possible. No request shall be submitted less than 14 days prior to the date the party desires to implement the proposed substitution. Complex substitutions require additional time. All substitution requests shall be submitted early enough to permit the District ample time to review and consider it. Should the substitute be approved, the District will provide a written authorization specifying the particular substitution that has been approved. No substitution shall be implemented without or prior to receiving the written authorization. - END OF SECTION SECTION III REVISED JUNE 2016

24 SECTION IV VIRGIN VALLEY WATER DISTRICT WATER SYSTEM CAPACITY AND PRESSURE A. CAPACITY A public water supplier is required to ensure that the residual pressure in its water system satisfies the requirements of NAC 445A Developers shall design and construct all water works improvement projects in such a manner as to meet the residual pressure requirements of the District and as set forth in NAC 445A The District has determined the capacity of its water system, maximum day demand, peak hour demand, and has estimated future demand (NAC 445A.66725). All developers shall design and construct all water works improvement projects in such a manner as to meet the actual maximum day demand, peak hour demand, fire flow and fire demand (NAC 445A.66725). Developers of subdivisions, large commercial or industrial projects, and other developments or improvements which may have a significant impact on the District s water system, as determined by the District or the District s Engineer in their reasonable discretion, shall at their expense provide an engineering update of the District s water system as necessary to satisfy and prepared in accordance with NAC 445A B. WATER PRESSURE A public water supplier is required to ensure that the residual pressure in its water system satisfies the requirements of NAC 445A Developers shall design and construct all water works improvement projects in such a manner as to meet the residual pressure requirements outlined in Section C below. C. PRESSURE MODELING REQUIREMENTS Pressure and flow modeling shall be provided at the developer s expense for any development of 10 EDU s or greater. Model results are subject to review by the District s Engineer and shall, at a minimum, meet all requirements of Nevada Administrative Code (NAC) section 445A.6672, namely: Ensure pressure in the distribution system is: a. At least 20 psi during conditions of fire flow and fire demand experienced during maximum day demand; b. At least 30 psi during peak hour demand; and c. At least 40 psi during maximum day demand. 4-1 SECTION IV REVISED JUNE 2016