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HomeMy WebLinkAboutDDW-2025-009010Utah Department Of Environmental Quality Division Of Drinking Water Sanitary Survey Sanitary Survey General System Information Site Visit Date Surveyor Name 09/10/2025 Julie Cobleigh ZION CANYON WATER SYSTEM PWS ID: UTAH27051 Rating: Approved 05/19/2021 Active 1 Admin Contact (AC) [ eMail address is REQUIRED ] MIN | 15pts | SM | G004 | R309-100-4(5) | Rule requires a person or organization be designated as the owner of the system and name, address and phone number of such be supplied to the Division. *First Name: Matthew *Last Name: Makay *Organization: *Address: Redacted *City: HURRICANE *State: UT *Zip: 84737 *Email: Matt_MacKay@nps.gov *Phone: 435-772-0207 Emergency Phone: 435-216-8517 2 Legal Contact (LC) [ if no eMail address is available, enter NoeMail@utah.gov ] MIN | 15pts | SM | G004 | R309-100-4(5) | Rule requires a person or organization be designated as the owner of the system and name, address and phone number of such be supplied to the Division. *First Name: *Last Name: *Organization: NPS - ZION NATIONAL PARK *Address: ZION NATIONAL PARK *City: SPRINGDALE *State: UT *Zip: 84767 *Email: Matt_MacKay@nps.gov *Phone: 435-772-0207 DEQ | Drinking Water Run Date: 09/23/2025 10:35:57 | Rating: Approved UTAH27051 ZION CANYON WATER SYSTEM page 1 of 55 3 Owner Contact (OW) [ if no eMail address is available, enter NoeMail@utah.gov ] MIN | 15pts | SM | G004 | R309-100-4(5) | Rule requires a person or organization be designated as the owner of the system and name, address and phone number of such be supplied to the Division. *First Name: *Last Name: *Organization: NPS - ZION NATIONAL PARK *Address: ZION NATIONAL PARK *City: SPRINGDALE *State: UT *Zip: 84767 *Email: Matt_MacKay@nps.gov *Phone: 435-772-0207 4 Direct Operator in Charge (DO) [ if no eMail address is available, enter NoeMail@utah.gov ] MIN | 15pts | SM | G004 | R309-100-4(5) | Rule requires a person or organization be designated as the owner of the system and name, address and phone number of such be supplied to the Division. *First Name: Matthew *Last Name: MacKay *Organization: *Address: 955 N 260 E *City: HURRICANE *State: UT *Zip: 84737 *Email: Matt_MacKay@nps.gov *Phone: 435-772-0207 Emergency Phone: 435-216-8517 5 Does the system serve a Residential population?Y 5A Population - Residential 60 5B Operating Period (Start Date) - Residential 01/01 5C Operating Period (End Date) - Residential 12/31 6 Does the system serve a Transient population? (A transient population is a rotating population that is served by a water system that does not remain in the jurisdiction of the water system for long periods of time. Examples of a transient population include, but are not limited to, campers at a campground, users of a highway rest stop, skiers at a ski resort, guests at a hotel, or patrons of a restaurant or a shopping center.) Y 6A Population - Transient 3100 6B Operating Period (Start Date) - Transient 01/01 6C Operating Period (End Date) - Transient 12/31 7 Does the system serve a Non-Transient population? (A non-transient population is a population served by a water system that is the same population being served by the system for at least six months of the year, but is not a resident in the system. Examples of a non-transient population include, but are not limited to, employees of a restaurant, shop, or ski resort; teachers and students at a school, day-care center, or church; doctors, nurses, and other employees at a hospital or healthcare clinic.) Y 7A Population - Non-Transient 220 7B Operating Period (Start Date) - Non-Transient 01/01 DEQ | Drinking Water Run Date: 09/23/2025 10:35:57 | Rating: Approved UTAH27051 ZION CANYON WATER SYSTEM page 2 of 55 Site Visit Info Management and Operations 7C Operating Period (End Date) - Non-Transient 12/31 8 Population - Wholesale :0 9 Residential Connections:34 10 Commercial Connections:6 11 Industrial Connections:0 12 Agricultural Connections:0 13 Date of Survey (First Day of Field Work)09/10/2025 14 Date of Survey (Last Day of Field Work) ** this should match the Date of Survey in the header ** 09/10/2025 15 Date final report sent to system (questionnaire, deficiency report and capacity spreadsheet) 09/23/2025 16 Water system representative present during the survey:Matt MacKay 17 How much time was spent to prepare survey documents prior to field survey? (Round up to nearest quarter hour) 2 18 How much time was spent to complete the field survey (arrival to completion; include travel time between water system facilities)? (Round up to nearest quarter hour) 8 19 How much time was spent traveling from the primary workplace to the system and back again at the end of the field survey? (Round up to nearest quarter hour) 9 20 How much time did it take to finish the Survey Report? (Round up to nearest quarter hour) 4 21 Did you survey multiple water systems in one trip? ... if yes, answer the following question(s) Y 21A If yes, how many?5 22 For a community water system with water sources that require power to produce sufficient flow, system is equipped with standby power option. SIG | 25pts | SO | S033 | R309-515-6(2)(a) | Rule requires a community water system without naturally flowing water sources, such as springs or flowing wells, to have one or more of the system's sources equipped for operation during power outages. To ensure continuous service when the primary power has been interrupted, a redundant power supply is required. A redundant power supply may include a transfer switch for auxiliary power such as a generator or a power supply service with coverage from two independent substations. This significant deficiency must be corrected within 120 days of notification or have a corrective action plan approved by DDW. C DEQ | Drinking Water Run Date: 09/23/2025 10:35:57 | Rating: Approved UTAH27051 ZION CANYON WATER SYSTEM page 3 of 55 23 There are no undocumented drinking water facilities (i.e. tanks, pump stations, treatment facilities, etc.) or recent modifications that have not gone through or in process of DDW review [LIST UNDOCUMENTED FACILITIES OR DESCRIBE MODIFICATIONS, IF APPLICABLE] [undocumented sources are covered in a different question] SIG | 50pts | SM | G001 | R309-100-5(2), R309-500-6, R309-500-9, R309-500-9(2) and (3) | Rule requires complete plans & specification for all public drinking water projects to be approved in writing by the Director. Any facility found that has not started DDW review shall be considered unapproved. This significant deficiency must be corrected within 120 days of notification or have a corrective action plan approved by DDW. C 24 Are there any individual home booster pumps installed in the distribution system (not for fire suppression)? SIG | 50pts | SM | M008 | R309-550-11(3) | R309-550-11(3) C 25 Does the system haul water?N 26 For a community system serving 100 or more connections, at least 2 water sources are available. SIG | 50pts | SO | TGR7 | R309-515-4(3) | Rule requires Community Water Systems serving more than 100 connections to have a minimum of two sources except where served by a water treatment plant. This significant deficiency must be corrected within 120 days of notification or have a corrective action plan approved by DDW. C 27 Does system have a consecutive connection to another water system not listed in the SOURCE section of Waterlink Report? If yes, answer the following question(s) N 28 Does the system have a deficiency meeting the required source capacity? (USE SPREADSHEET FOR CALCULATIONS) *IF YES, SELECT CORRECT STATEMENT FROM THE FOLLOWING AND MARK "YES"; MARK ALL OTHER STATEMENTS "NO." N 29 Does the system have a deficiency meeting the required storage capacity DUE SOLELY TO FIRE SUPPRESSION NEEDS? (USE SPREADSHEET FOR CALCULATIONS) *IF YES, SELECT CORRECT STATEMENT FROM THE FOLLOWING AND MARK "YES"; MARK ALL OTHER STATEMENTS "NO." N 30 Does the system have a deficiency meeting the required equalization storage capacity for indoor/outdoor demands (but not because of fire suppression needs)? (USE SPREADSHEET FOR CALCULATIONS) *IF YES, SELECT CORRECT STATEMENT FROM THE FOLLOWING AND MARK "YES"; MARK ALL OTHER STATEMENTS "NO." N 31 Does your water system have an Emergency Response Plan? REC | 0pts | SM | M001 | R309-105-18 | All suppliers are advised to develop contingency plans to cope with possible emergency situations. In many areas of the state the possibility of earthquake damage shall be realistically considered. Y 32 Does your Emergency Response Plan address cybersecurity? (only required for systems over 3,300 population, otherwise mark NA) MIN | 15pts | TR | TGR9 | R309-105-7, 8 & 18, R309-100 through 605 | Trigger for regulatory followup to address concerns. NA (Notes: under 3,300) 33 Does your water system use SCADA? e.g. computers, laptops, phones, tablets, or any other computer systems to manage, operate, or maintain the PWS? Y 34 Does your water system use any computer systems in regular business operations such as accounting, billing, payroll, human resources, or management? Y DEQ | Drinking Water Run Date: 09/23/2025 10:35:57 | Rating: Approved UTAH27051 ZION CANYON WATER SYSTEM page 4 of 55 Cross Connection and Operator Certification 35 For a community water system or a non-transient non-community water system, did you make your initial service line inventory available to the public? (if a transient system, enter NA) REC | 0pts | MR | R006 | 40 CFR 141.84 | (a)(8)The rule requires that the service line materials inventory be publicly accessible. (a)(8)(ii) The rule requires that water systems serving greater than 50,000 persons make the publicly accessible inventory available online. (a)(9) The rule requires that when a water system has no lead, galvanized requiring replacement, or lead status unknown service lines (regardless of ownership) in its inventory, it may comply with the requirements using a written statement, in lieu of the inventory, declaring that the distribution system has no lead service lines or galvanized requiring replacement service lines. The statement must include a general description of all applicable sources used to make this determination. Y 35A For a community or a non-transient non-community water system serving a population greater than 50,000, is your service line inventory provided online? (mark NA for systems less than 50,000) (If yes, provide the link in the comment box)? REC | 0pts | MR | R006 | 40 CFR 141.84 | (a)(8)The rule requires that the service line materials inventory be publicly accessible. (a)(8)(ii) The rule requires that water systems serving greater than 50,000 persons make the publicly accessible inventory available online. (a)(9) The rule requires that when a water system has no lead, galvanized requiring replacement, or lead status unknown service lines (regardless of ownership) in its inventory, it may comply with the requirements using a written statement, in lieu of the inventory, declaring that the distribution system has no lead service lines or galvanized requiring replacement service lines. The statement must include a general description of all applicable sources used to make this determination. NA (Notes: under 50,000) 35B For a community water system or a non transient non-community water system serving a population of less than 50,000, what method was used to make the inventory publicly available? OTH (Notes: check with Dylan) 36 Legally adopted authority statement MIN | 15pts | SM | M003 | R309-105-12(2) | Rule requires each public water system to have a cross connection control program that includes a legally adopted and functional local authority to enforce the program (i.e., ordinance, bylaw, or policy). C 37 Documentation of annual public awareness and/or employee training MIN | 15pts | SM | M004 | R309-105-12(2) | Rule requires each public water system to have a cross connection control program that includes providing public education or awareness material or presentations. C 38 Documentation of personnel trained to manage the program (ALL COMUNITY WATER SYSTEMS REQUIRE A DDW CERTIFIED CCC PROGRAM ADMINISTRATOR. ALL OTHER WATER SYSTEMS REQUIRE AT A MINIMUM BACKFLOW 101 OR EQUIVALENT/ GREATER CCC TRAINING) MIN | 15pts | SM | M005 | R309-105-12(2) | Rule requires each public water system to have a cross connection control program that includes an operator with adequate training in the area of cross connection control or backflow prevention. C DEQ | Drinking Water Run Date: 09/23/2025 10:35:57 | Rating: Approved UTAH27051 ZION CANYON WATER SYSTEM page 5 of 55 General Maintenance and Environment Distribution 39 Does the water system have detailed records of cross connection control activities? (inventories of backflow assemblies, devices, and air gaps installed within the system) MIN | 15pts | SM | M006 | R309-105-12(2) | Rule requires each public water system to have a cross connection control program that includes written records of cross connection control activities. C 40 Does the water system have records of on-going enforcement activities? (test history, enforcement activities, hazard assessments) MIN | 15pts | SM | M007 | R309-105-12(2) | Rule requires each public water system to have a cross connection control program that includes test history and documentation of on-going enforcement activities. C 41 Operator meets required level of certification for water system. ( IF NO CERTIFIED OPERATOR IS REQUIRED MARK COMPLIANT ) SIG | 50pts | OC | C001 | R309-105-11, R309-300-5(3) | Rule requires every community and NTNC water system and public water systems that utilize treatment/filtration to have at least one operator certified at the classified grade of the water system. Certification must be appropriate for the type of system operated (treatment and/or distribution). This significant deficiency must be corrected within 120 days of notification or have a corrective action plan approved by DDW. C 42 Certified operator is within 1 hour travel time of water system. ( IF NO CERTIFIED OPERATOR IS REQUIRED MARK COMPLIANT ) MIN | 0pts | OC | C002 | R309-300-5(14) | Rule requires the operator to be within 1 hour travel time, under normal work and home conditions, of each drinking water system for which he is considered in direct responsible charge. C 43 Are there any visual indications of unsanitary conditions? SIG | 50pts | SM | M017 | R309-200-6, R309-105-18, R309-215-4(3) | R309-200-6 The Secondary Maximum Contaminant Levels for public water systems deals with substances which affect the aesthetic quality of drinking water. They are presented here as recommended limits or ranges and are not grounds for rejection. The taste of water may be unpleasant and the usefulness of the water may be impaired if these standards are significantly exceeded. R309-105-18 The Director or the local health department shall be informed by telephone by a water supplier of any "emergency situation". The term "emergency situation... R309-215-4(3) If the water fails to meet minimum standards, then certain public notification procedures shall be carried out, as outlined in R309-220. Water suppliers shall also keep analytical records in their possession, for a required length of time, as outlined in R309-105-17. C 44 No unprotected connection between the distribution system and a source of contamination. (If there is an unprotected connection, describe the location in detail.) SIG | 50pts | DS | D009 | R309-550-5(11) | R309-550-5(11) C 45 Are air release/vacuum valves in the distribution system? ... if yes, answer the following question(s) Y DEQ | Drinking Water Run Date: 09/23/2025 10:35:57 | Rating: Approved UTAH27051 ZION CANYON WATER SYSTEM page 6 of 55 45A Open end of vent line covered with #14 mesh screen SIG | 25pts | DS | D004 | R309-550-6(6)(b) | Rule states the open end of the air relief vent pipe from automatic valves shall be provided with a #14 mesh, non-corrodible screen and a downward elbow, and where possible, be extended to at least one foot above grade. This significant deficiency must be corrected within 120 days of notification or have a corrective action plan approved by DDW. C 45B For a valve in a chamber, open end of vent pipe is at least 12 inches above grade or one foot above distribution line in a chamber that does not flood. SIG | 25pts | DS | D006 | R309-550-6(6)(b) | Rule states the open end of the air relief vent pipe from automatic valves shall be provided with a #14 mesh, non-corrodible screen and a downward elbow, and where possible, be extended to at least one foot above grade. This significant deficiency must be corrected within 120 days of notification or have a corrective action plan approved by DDW. C 45C Chamber has drain to daylight, gravel-filled adsorption pit if not subject to flooding, or sump pump. SIG | 25pts | DS | D007 | R309-550-6(6)(b) and (7)(b) | Rule states chambers shall be provided with a drain to daylight, if possible. Where this is not possible, underground gravel-filled absorption pits may be used if the site is not subject to flooding and conditions will assure adequate drainage. Sump pumps may also be considered if a drain to daylight or absorption pit is not feasible. This significant deficiency must be corrected within 120 days of notification or have a corrective action plan approved by DDW. C 45D Open end of vent line down-turned. SIG | 25pts | DS | D006 | R309-550-6(6)(b) | Rule states the open end of the air relief vent pipe from automatic valves shall be provided with a #14 mesh, non-corrodible screen and a downward elbow, and where possible, be extended to at least one foot above grade. This significant deficiency must be corrected within 120 days of notification or have a corrective action plan approved by DDW. C 46 Water system has a program to maintain, operate, or control the use of fire hydrants. REC | 0pts | DS | D012 | N/A | Fire hydrants provide a direct access to the water in the distribution system. In order to protect the quality and integrity of the water, fire hydrant access should be controlled. C 47 Blow offs or air release valves are not directly connected to a sanitary sewer line. SIG | 50pts | DS | D013 | R309-550-6(5)(a), R309-550-6(6)(c) and (7)(a) | Rule states blow-offs or air relief valves shall not be connected directly to a sewer. This significant deficiency must be corrected within 120 days of notification or have a corrective action plan approved by DDW. C 48 Blow offs or air release valves do not discharge below flood level in ditches or streams. SIG | 50pts | DS | D016 | R309-550-9(1) and (2), R309-550-13(2) | R309-550-9(1 & 3) C 49 All water mains installed after 1995 that provide fire flow are at least 8 inches in diameter. MIN | 15pts | DS | D019 | R309-550-5(4) & (5) | Rule states that the minimum line size serving a fire hydrant lateral shall be 8-inch diameter unless a hydraulic analysis indicates that required flow and pressures can be maintained by 6-inch lines. C DEQ | Drinking Water Run Date: 09/23/2025 10:35:57 | Rating: Approved UTAH27051 ZION CANYON WATER SYSTEM page 7 of 55 General Disinfection ST003 - WYLIE RESERVOIR - Inactive (AB - ABANDONED) TP002 - WYLIE CHLORINATOR - Inactive (AB - ABANDONED) WS005 - WYLIE SPRING - Inactive (AB - ABANDONED) WS001 - BIRCH SPRINGS - Active 50 Distribution system capable of providing minimum pressure of 20 psi at all service connections. SIG | 50pts | DS | D003 | R309-105-9, R309-550-5(1) | Rule states the distribution system shall maintain minimum pressures as required by R309-105-9 at all points of connection under all flow conditions. This significant deficiency must be corrected within 120 days of notification or have a corrective action plan approved by DDW. C 51 Was the water system constructed or new portions added after January 1, 2007? ... if yes, answer the following question(s) N 52 Water system follows AWWA disinfection procedures for new, repaired, or depressurized seasonal water mains and tanks. SIG | 25pts | MR | D018 | R309-550-8(10) | All new and repaired water mains and appurtenances shall be disinfected in accordance with AWWA Standard C651. This significant deficiency must be corrected within 120 days of notification or have a corrective action plan approved by DDW. C 53 How often do you periodically disinfect any or all parts of your water system (i.e. batch disinfection) other than for repairs or maintenance? SIG | 50pts | SM | G006 | R309-105-6(1)(a), R309-500-6 | R309-105-6(1) Approval of Engineering Plans and Specifications R309-500-6 Plan Approval Procedure. C 54 Does the water system still have physical access to this facility? Y/N Guidance: Answer NO if sold and no longer have security access or the facility is demolished and can not be inspected. N 55 Does the water system still have physical access to this facility? Y/N Guidance: Answer NO if sold and no longer have security access or the facility is demolished and can not be inspected. N 56 Does the water system still have physical access to this facility? Y/N Guidance: Answer NO if sold and no longer have security access or the facility is demolished and can not be inspected. N 57 Is this facility Active or Inactive? (Active status means used on a routine/seasonal basis without long periods of inactivity and water quality samples are routinely collected)) A 58 Operating Period (Start Date)01/01 59 Operating Period (End Date)12/31 60 Undocumented sources shall not be physically connected to the drinking water system. (IF SOURCE IS NOT IN SYSTEM INVENTORY MARK "DEFICIENT") SIG | 200pts | SO | S001 | R309-515-6(5), R309-515-7(4), R309-500-9(2) and (3) | R309-105-6(1) requires plans and specifications for all public drinking water projects to be approved in writing by the Director prior to the commencement of construction. This significant deficiency must be corrected within 120 days of notification or have a corrective action plan approved by DDW. C DEQ | Drinking Water Run Date: 09/23/2025 10:35:57 | Rating: Approved UTAH27051 ZION CANYON WATER SYSTEM page 8 of 55 61 Area of equal or higher elevation within 50 feet of spring collection devices is fenced. MIN | 15pts | SO | SS02 | R309-515-7(7)(e) | Rule requires a stock-tight fence around the spring collection area. C 62 Surface water runoff diverted away from spring by diversion channel or berm. MIN | 15pts | SO | SS03 | R309-515-7(7)(g) | Rule requires a diversion channel or berm, constructed immediately inside the fenced area, capable of diverting all anticipated surface water runoff away from the spring collection area. C 63 Spring box has a means to release overflow? MIN | 15pts | SO | SS23 | R309-515-7(7)(d), R309-545-13(1) | All junction boxes and collection boxes, must comply with R309-545 with respect to access openings, venting, and tank overflow. Lids for these spring boxes shall be gasketed and the box adequately vented. Y 63A Overflow screened with #4 mesh screen SIG | 25pts | SO | SS04 | R309-515-7(7)(d), R309-545-13(3) | Overflow pipes on junction and collection boxes shall comply with R309-545 and be screened with No. 4 mesh non-corrodible screens. This significant deficiency must be corrected within 120 days of notification or have a corrective action plan approved by DDW. D (Notes: could not locate overflow discharge) 63B Overflow has a minimum of 12 inch clearance above flood rim of receiving basin SIG | 25pts | SO | SS14 | R309-515-7(7)(d), R309-545 | Overflow pipes on junction and collection boxes shall comply with R309-545 and discharge a minimum of 12 inches above the ground surface or rim of the receiving basin. This significant deficiency must be corrected within 120 days of notification or have a corrective action plan approved by DDW. D (Notes: could not locate overflow discharge) 64 Drain has minimum of 12 inch clearance above flood rim of receiving basin SIG | 25pts | SO | SS14 | R309-515-7(7)(d), R309-545 | Overflow pipes on junction and collection boxes shall comply with R309-545 and discharge a minimum of 12 inches above the ground surface or rim of the receiving basin. This significant deficiency must be corrected within 120 days of notification or have a corrective action plan approved by DDW. C 65 Spring collection area graded and no evidence of water ponding or flow on surface? SIG | 25pts | SO | SS06 | R309-515-7(7)(i) | Rule requires the spring to be developed as thoroughly as possible to minimize the possibility of excess water ponding within the collection area. This significant deficiency must be corrected within 120 days of notification or have a corrective action plan approved by DDW. C 66 If a liner is present, spring liner integrity is maintained. SIG | 50pts | SO | SS19 | R309-515-7(7)(b)(iv) | If a liner is present, it shall be installed to assure its integrity. No sharp-edged stones or stones two inches or larger shall be located within two inches of the liner. This significant deficiency must be corrected within 120 days of notification or have a corrective action plan approved by DDW. C DEQ | Drinking Water Run Date: 09/23/2025 10:35:57 | Rating: Approved UTAH27051 ZION CANYON WATER SYSTEM page 9 of 55 67 No deep-rooted vegetation is within the 50 ft collection area. SIG | 25pts | SO | SS07 | R309-515-7(7)(f) | All deep-rooted vegetation within the fenced collection area shall be removed by a means not negatively affecting water quality. This significant deficiency must be corrected within 120 days of notification or have a corrective action plan approved by DDW. C 68 No roots seen in collection boxes and junctions. SIG | 25pts | SO | SS08 | R309-105-10(4)(a), R309-515-8(1)(a) | Spring collection areas shall be periodically (preferably annually) cleared of deep-rooted vegetation to prevent root growth from clogging collection lines. This significant deficiency must be corrected within 120 days of notification or have a corrective action plan approved by DDW. C 69 Is a spring collection box present? ... if yes, answer the following question(s) MIN | 5pts | SO | L014 | R309-515-7(7)(c) | Rule requires each spring collection area to be provided with at least one collection box to permit spring inspection and testing. Y 69A Spring box has shoe box type lid with 2 inch overlap around frame SIG | 25pts | SO | SS09 | R309-515-7(7)(d), R309-545-14 (2) | Access openings shall comply with R309-545 and be provided with a close-fitting, solid shoebox-type cover that extends down around the frame at least 2 inches. This significant deficiency must be corrected within 120 days of notification or have a corrective action plan approved by DDW. C 69B Spring box lid is gasketed SIG | 25pts | SO | SS10 | R309-515-7(7)(d), R309-545-14 (2) | Access openings shall comply with R309-545 and be provided with a cover furnished with a gasket between the lid and frame. This significant deficiency must be corrected within 120 days of notification or have a corrective action plan approved by DDW. C 69C Spring box lid does not show evidence of a vacuum. MIN | 5pts | SO | SS11 | R309-515-7(7)(d), R309-545-15 | Rule requires junction boxes and collection boxes to comply with R309-545 with respect to venting. Therefore, a junction or collection box requires a vent to be fitted with #14 mesh or finer non-corrodible screen, be fitted with a protective heavy-gauge screen or covering if 6 inches in diameter or greater, be down-turned and shielded to prevent the entrance of contaminants, be located and sized to avoid blockage during winter, and have the end of the vent discharge a minimum of 24 inches above the earth on buried structures. C 69D Spring box opening is at least 4 inches above the surface of the box or 18 inches above an earthen cover if the box is buried. MIN | 15pts | SO | SS12 | R309-515-7(7)(d), R309-545-14 (1), | Access openings shall comply with R309-545 and be framed at least 4 inches above the surface of the spring box roof at the opening or 18 inches above the ground surface on a buried spring box. C 69E Spring box lid is locked SIG | 25pts | SO | SS13 | R309-515-7(7)(d), R309-545-14 (3) | Access openings shall comply with R309-545 and the lids to the openings shall be locked. This significant deficiency must be corrected within 120 days of notification or have a corrective action plan approved by DDW. C DEQ | Drinking Water Run Date: 09/23/2025 10:35:57 | Rating: Approved UTAH27051 ZION CANYON WATER SYSTEM page 10 of 55 WS002 - WATERCRESS SPRING - Active 69F All openings/penetrations in the spring collection box are sealed. SIG | 50pts | SO | SS20 | R309-515-7(7)(d), R309-545-9(1) and (2) | All junction and collection boxes shall comply with R309-545 and shall have suitable watertight roofs and sidewalls that exclude birds, animals, insects, and excessive dust. All openings shall be kept to a minimum and be watertight. Pipes that may contain water of lesser quality than drinking water shall not penetrate the spring box. This significant deficiency must be corrected within 120 days of notification or have a corrective action plan approved by DDW. C 70 Is a spring box vent present? ... if yes, answer the following question(s) MIN | 5pts | SO | SS11 | R309-515-7(7)(d), R309-545-15 | Rule requires junction boxes and collection boxes to comply with R309-545 with respect to venting. Therefore, a junction or collection box requires a vent to be fitted with #14 mesh or finer non-corrodible screen, be fitted with a protective heavy-gauge screen or covering if 6 inches in diameter or greater, be down-turned and shielded to prevent the entrance of contaminants, be located and sized to avoid blockage during winter, and have the end of the vent discharge a minimum of 24 inches above the earth on buried structures. N (Notes: no vent) 71 Spring has a permanent flow-measuring device. MIN | 5pts | SO | SS01 | R309-515-7(7)(h) | Rule requires a spring to have a permanent flow measuring device. C 72 Is this facility Active or Inactive? (Active status means used on a routine/seasonal basis without long periods of inactivity and water quality samples are routinely collected)) A 73 Operating Period (Start Date)01/01 74 Operating Period (End Date)12/31 75 Undocumented sources shall not be physically connected to the drinking water system. (IF SOURCE IS NOT IN SYSTEM INVENTORY MARK "DEFICIENT") SIG | 200pts | SO | S001 | R309-515-6(5), R309-515-7(4), R309-500-9(2) and (3) | R309-105-6(1) requires plans and specifications for all public drinking water projects to be approved in writing by the Director prior to the commencement of construction. This significant deficiency must be corrected within 120 days of notification or have a corrective action plan approved by DDW. C 76 Area of equal or higher elevation within 50 feet of spring collection devices is fenced. MIN | 15pts | SO | SS02 | R309-515-7(7)(e) | Rule requires a stock-tight fence around the spring collection area. C 77 Surface water runoff diverted away from spring by diversion channel or berm. MIN | 15pts | SO | SS03 | R309-515-7(7)(g) | Rule requires a diversion channel or berm, constructed immediately inside the fenced area, capable of diverting all anticipated surface water runoff away from the spring collection area. C DEQ | Drinking Water Run Date: 09/23/2025 10:35:57 | Rating: Approved UTAH27051 ZION CANYON WATER SYSTEM page 11 of 55 78 Spring box has a means to release overflow? MIN | 15pts | SO | SS23 | R309-515-7(7)(d), R309-545-13(1) | All junction boxes and collection boxes, must comply with R309-545 with respect to access openings, venting, and tank overflow. Lids for these spring boxes shall be gasketed and the box adequately vented. Y 78A Overflow screened with #4 mesh screen SIG | 25pts | SO | SS04 | R309-515-7(7)(d), R309-545-13(3) | Overflow pipes on junction and collection boxes shall comply with R309-545 and be screened with No. 4 mesh non-corrodible screens. This significant deficiency must be corrected within 120 days of notification or have a corrective action plan approved by DDW. D (Notes: screen needs to be replaced) 78B Overflow has a minimum of 12 inch clearance above flood rim of receiving basin SIG | 25pts | SO | SS14 | R309-515-7(7)(d), R309-545 | Overflow pipes on junction and collection boxes shall comply with R309-545 and discharge a minimum of 12 inches above the ground surface or rim of the receiving basin. This significant deficiency must be corrected within 120 days of notification or have a corrective action plan approved by DDW. C 79 Drain has minimum of 12 inch clearance above flood rim of receiving basin SIG | 25pts | SO | SS14 | R309-515-7(7)(d), R309-545 | Overflow pipes on junction and collection boxes shall comply with R309-545 and discharge a minimum of 12 inches above the ground surface or rim of the receiving basin. This significant deficiency must be corrected within 120 days of notification or have a corrective action plan approved by DDW. C 80 Spring collection area graded and no evidence of water ponding or flow on surface? SIG | 25pts | SO | SS06 | R309-515-7(7)(i) | Rule requires the spring to be developed as thoroughly as possible to minimize the possibility of excess water ponding within the collection area. This significant deficiency must be corrected within 120 days of notification or have a corrective action plan approved by DDW. C 81 If a liner is present, spring liner integrity is maintained. SIG | 50pts | SO | SS19 | R309-515-7(7)(b)(iv) | If a liner is present, it shall be installed to assure its integrity. No sharp-edged stones or stones two inches or larger shall be located within two inches of the liner. This significant deficiency must be corrected within 120 days of notification or have a corrective action plan approved by DDW. C 82 No deep-rooted vegetation is within the 50 ft collection area. SIG | 25pts | SO | SS07 | R309-515-7(7)(f) | All deep-rooted vegetation within the fenced collection area shall be removed by a means not negatively affecting water quality. This significant deficiency must be corrected within 120 days of notification or have a corrective action plan approved by DDW. D (Notes: Deep rooted vegetation in the collection area that causes roots in the lines that need to be cleaned out quarterly) 83 No roots seen in collection boxes and junctions. SIG | 25pts | SO | SS08 | R309-105-10(4)(a), R309-515-8(1)(a) | Spring collection areas shall be periodically (preferably annually) cleared of deep-rooted vegetation to prevent root growth from clogging collection lines. This significant deficiency must be corrected within 120 days of notification or have a corrective action plan approved by DDW. C DEQ | Drinking Water Run Date: 09/23/2025 10:35:57 | Rating: Approved UTAH27051 ZION CANYON WATER SYSTEM page 12 of 55 84 Is a spring collection box present? ... if yes, answer the following question(s) MIN | 5pts | SO | L014 | R309-515-7(7)(c) | Rule requires each spring collection area to be provided with at least one collection box to permit spring inspection and testing. Y 84A Spring box has shoe box type lid with 2 inch overlap around frame SIG | 25pts | SO | SS09 | R309-515-7(7)(d), R309-545-14 (2) | Access openings shall comply with R309-545 and be provided with a close-fitting, solid shoebox-type cover that extends down around the frame at least 2 inches. This significant deficiency must be corrected within 120 days of notification or have a corrective action plan approved by DDW. C 84B Spring box lid is gasketed SIG | 25pts | SO | SS10 | R309-515-7(7)(d), R309-545-14 (2) | Access openings shall comply with R309-545 and be provided with a cover furnished with a gasket between the lid and frame. This significant deficiency must be corrected within 120 days of notification or have a corrective action plan approved by DDW. C 84C Spring box lid does not show evidence of a vacuum. MIN | 5pts | SO | SS11 | R309-515-7(7)(d), R309-545-15 | Rule requires junction boxes and collection boxes to comply with R309-545 with respect to venting. Therefore, a junction or collection box requires a vent to be fitted with #14 mesh or finer non-corrodible screen, be fitted with a protective heavy-gauge screen or covering if 6 inches in diameter or greater, be down-turned and shielded to prevent the entrance of contaminants, be located and sized to avoid blockage during winter, and have the end of the vent discharge a minimum of 24 inches above the earth on buried structures. C (Notes: no vent) 84D Spring box opening is at least 4 inches above the surface of the box or 18 inches above an earthen cover if the box is buried. MIN | 15pts | SO | SS12 | R309-515-7(7)(d), R309-545-14 (1), | Access openings shall comply with R309-545 and be framed at least 4 inches above the surface of the spring box roof at the opening or 18 inches above the ground surface on a buried spring box. C 84E Spring box lid is locked SIG | 25pts | SO | SS13 | R309-515-7(7)(d), R309-545-14 (3) | Access openings shall comply with R309-545 and the lids to the openings shall be locked. This significant deficiency must be corrected within 120 days of notification or have a corrective action plan approved by DDW. C 84F All openings/penetrations in the spring collection box are sealed. SIG | 50pts | SO | SS20 | R309-515-7(7)(d), R309-545-9(1) and (2) | All junction and collection boxes shall comply with R309-545 and shall have suitable watertight roofs and sidewalls that exclude birds, animals, insects, and excessive dust. All openings shall be kept to a minimum and be watertight. Pipes that may contain water of lesser quality than drinking water shall not penetrate the spring box. This significant deficiency must be corrected within 120 days of notification or have a corrective action plan approved by DDW. C DEQ | Drinking Water Run Date: 09/23/2025 10:35:57 | Rating: Approved UTAH27051 ZION CANYON WATER SYSTEM page 13 of 55 WS003 - LOWER GROTTO SPRING - Active 85 Is a spring box vent present? ... if yes, answer the following question(s) MIN | 5pts | SO | SS11 | R309-515-7(7)(d), R309-545-15 | Rule requires junction boxes and collection boxes to comply with R309-545 with respect to venting. Therefore, a junction or collection box requires a vent to be fitted with #14 mesh or finer non-corrodible screen, be fitted with a protective heavy-gauge screen or covering if 6 inches in diameter or greater, be down-turned and shielded to prevent the entrance of contaminants, be located and sized to avoid blockage during winter, and have the end of the vent discharge a minimum of 24 inches above the earth on buried structures. N (Notes: no vent) 86 Spring has a permanent flow-measuring device. MIN | 5pts | SO | SS01 | R309-515-7(7)(h) | Rule requires a spring to have a permanent flow measuring device. C 87 Is this facility Active or Inactive? (Active status means used on a routine/seasonal basis without long periods of inactivity and water quality samples are routinely collected)) A 88 Operating Period (Start Date)01/01 89 Operating Period (End Date)12/31 90 Undocumented sources shall not be physically connected to the drinking water system. (IF SOURCE IS NOT IN SYSTEM INVENTORY MARK "DEFICIENT") SIG | 200pts | SO | S001 | R309-515-6(5), R309-515-7(4), R309-500-9(2) and (3) | R309-105-6(1) requires plans and specifications for all public drinking water projects to be approved in writing by the Director prior to the commencement of construction. This significant deficiency must be corrected within 120 days of notification or have a corrective action plan approved by DDW. C 91 Area of equal or higher elevation within 50 feet of spring collection devices is fenced. MIN | 15pts | SO | SS02 | R309-515-7(7)(e) | Rule requires a stock-tight fence around the spring collection area. C 92 Surface water runoff diverted away from spring by diversion channel or berm. MIN | 15pts | SO | SS03 | R309-515-7(7)(g) | Rule requires a diversion channel or berm, constructed immediately inside the fenced area, capable of diverting all anticipated surface water runoff away from the spring collection area. C 93 Spring box has a means to release overflow? MIN | 15pts | SO | SS23 | R309-515-7(7)(d), R309-545-13(1) | All junction boxes and collection boxes, must comply with R309-545 with respect to access openings, venting, and tank overflow. Lids for these spring boxes shall be gasketed and the box adequately vented. Y 93A Overflow screened with #4 mesh screen SIG | 25pts | SO | SS04 | R309-515-7(7)(d), R309-545-13(3) | Overflow pipes on junction and collection boxes shall comply with R309-545 and be screened with No. 4 mesh non-corrodible screens. This significant deficiency must be corrected within 120 days of notification or have a corrective action plan approved by DDW. C DEQ | Drinking Water Run Date: 09/23/2025 10:35:57 | Rating: Approved UTAH27051 ZION CANYON WATER SYSTEM page 14 of 55 93B Overflow has a minimum of 12 inch clearance above flood rim of receiving basin SIG | 25pts | SO | SS14 | R309-515-7(7)(d), R309-545 | Overflow pipes on junction and collection boxes shall comply with R309-545 and discharge a minimum of 12 inches above the ground surface or rim of the receiving basin. This significant deficiency must be corrected within 120 days of notification or have a corrective action plan approved by DDW. C 94 Drain has minimum of 12 inch clearance above flood rim of receiving basin SIG | 25pts | SO | SS14 | R309-515-7(7)(d), R309-545 | Overflow pipes on junction and collection boxes shall comply with R309-545 and discharge a minimum of 12 inches above the ground surface or rim of the receiving basin. This significant deficiency must be corrected within 120 days of notification or have a corrective action plan approved by DDW. C 95 Spring collection area graded and no evidence of water ponding or flow on surface? SIG | 25pts | SO | SS06 | R309-515-7(7)(i) | Rule requires the spring to be developed as thoroughly as possible to minimize the possibility of excess water ponding within the collection area. This significant deficiency must be corrected within 120 days of notification or have a corrective action plan approved by DDW. C 96 If a liner is present, spring liner integrity is maintained. SIG | 50pts | SO | SS19 | R309-515-7(7)(b)(iv) | If a liner is present, it shall be installed to assure its integrity. No sharp-edged stones or stones two inches or larger shall be located within two inches of the liner. This significant deficiency must be corrected within 120 days of notification or have a corrective action plan approved by DDW. C 97 No deep-rooted vegetation is within the 50 ft collection area. SIG | 25pts | SO | SS07 | R309-515-7(7)(f) | All deep-rooted vegetation within the fenced collection area shall be removed by a means not negatively affecting water quality. This significant deficiency must be corrected within 120 days of notification or have a corrective action plan approved by DDW. C 98 No roots seen in collection boxes and junctions. SIG | 25pts | SO | SS08 | R309-105-10(4)(a), R309-515-8(1)(a) | Spring collection areas shall be periodically (preferably annually) cleared of deep-rooted vegetation to prevent root growth from clogging collection lines. This significant deficiency must be corrected within 120 days of notification or have a corrective action plan approved by DDW. C 99 Is a spring collection box present? ... if yes, answer the following question(s) MIN | 5pts | SO | L014 | R309-515-7(7)(c) | Rule requires each spring collection area to be provided with at least one collection box to permit spring inspection and testing. Y 99A Spring box has shoe box type lid with 2 inch overlap around frame SIG | 25pts | SO | SS09 | R309-515-7(7)(d), R309-545-14 (2) | Access openings shall comply with R309-545 and be provided with a close-fitting, solid shoebox-type cover that extends down around the frame at least 2 inches. This significant deficiency must be corrected within 120 days of notification or have a corrective action plan approved by DDW. C DEQ | Drinking Water Run Date: 09/23/2025 10:35:57 | Rating: Approved UTAH27051 ZION CANYON WATER SYSTEM page 15 of 55 99B Spring box lid is gasketed SIG | 25pts | SO | SS10 | R309-515-7(7)(d), R309-545-14 (2) | Access openings shall comply with R309-545 and be provided with a cover furnished with a gasket between the lid and frame. This significant deficiency must be corrected within 120 days of notification or have a corrective action plan approved by DDW. C 99C Spring box lid does not show evidence of a vacuum. MIN | 5pts | SO | SS11 | R309-515-7(7)(d), R309-545-15 | Rule requires junction boxes and collection boxes to comply with R309-545 with respect to venting. Therefore, a junction or collection box requires a vent to be fitted with #14 mesh or finer non-corrodible screen, be fitted with a protective heavy-gauge screen or covering if 6 inches in diameter or greater, be down-turned and shielded to prevent the entrance of contaminants, be located and sized to avoid blockage during winter, and have the end of the vent discharge a minimum of 24 inches above the earth on buried structures. C 99D Spring box opening is at least 4 inches above the surface of the box or 18 inches above an earthen cover if the box is buried. MIN | 15pts | SO | SS12 | R309-515-7(7)(d), R309-545-14 (1), | Access openings shall comply with R309-545 and be framed at least 4 inches above the surface of the spring box roof at the opening or 18 inches above the ground surface on a buried spring box. C 99E Spring box lid is locked SIG | 25pts | SO | SS13 | R309-515-7(7)(d), R309-545-14 (3) | Access openings shall comply with R309-545 and the lids to the openings shall be locked. This significant deficiency must be corrected within 120 days of notification or have a corrective action plan approved by DDW. C 99F All openings/penetrations in the spring collection box are sealed. SIG | 50pts | SO | SS20 | R309-515-7(7)(d), R309-545-9(1) and (2) | All junction and collection boxes shall comply with R309-545 and shall have suitable watertight roofs and sidewalls that exclude birds, animals, insects, and excessive dust. All openings shall be kept to a minimum and be watertight. Pipes that may contain water of lesser quality than drinking water shall not penetrate the spring box. This significant deficiency must be corrected within 120 days of notification or have a corrective action plan approved by DDW. C 100 Is a spring box vent present? ... if yes, answer the following question(s) MIN | 5pts | SO | SS11 | R309-515-7(7)(d), R309-545-15 | Rule requires junction boxes and collection boxes to comply with R309-545 with respect to venting. Therefore, a junction or collection box requires a vent to be fitted with #14 mesh or finer non-corrodible screen, be fitted with a protective heavy-gauge screen or covering if 6 inches in diameter or greater, be down-turned and shielded to prevent the entrance of contaminants, be located and sized to avoid blockage during winter, and have the end of the vent discharge a minimum of 24 inches above the earth on buried structures. N (Notes: no vent) 101 Spring has a permanent flow-measuring device. MIN | 5pts | SO | SS01 | R309-515-7(7)(h) | Rule requires a spring to have a permanent flow measuring device. C DEQ | Drinking Water Run Date: 09/23/2025 10:35:57 | Rating: Approved UTAH27051 ZION CANYON WATER SYSTEM page 16 of 55 WS004 - UPPER GROTTO SPRING - Active 102 Is this facility Active or Inactive? (Active status means used on a routine/seasonal basis without long periods of inactivity and water quality samples are routinely collected)) A 103 Operating Period (Start Date)01/01 104 Operating Period (End Date)12/31 105 Undocumented sources shall not be physically connected to the drinking water system. (IF SOURCE IS NOT IN SYSTEM INVENTORY MARK "DEFICIENT") SIG | 200pts | SO | S001 | R309-515-6(5), R309-515-7(4), R309-500-9(2) and (3) | R309-105-6(1) requires plans and specifications for all public drinking water projects to be approved in writing by the Director prior to the commencement of construction. This significant deficiency must be corrected within 120 days of notification or have a corrective action plan approved by DDW. C 106 Area of equal or higher elevation within 50 feet of spring collection devices is fenced. MIN | 15pts | SO | SS02 | R309-515-7(7)(e) | Rule requires a stock-tight fence around the spring collection area. C 107 Surface water runoff diverted away from spring by diversion channel or berm. MIN | 15pts | SO | SS03 | R309-515-7(7)(g) | Rule requires a diversion channel or berm, constructed immediately inside the fenced area, capable of diverting all anticipated surface water runoff away from the spring collection area. C 108 Spring box has a means to release overflow? MIN | 15pts | SO | SS23 | R309-515-7(7)(d), R309-545-13(1) | All junction boxes and collection boxes, must comply with R309-545 with respect to access openings, venting, and tank overflow. Lids for these spring boxes shall be gasketed and the box adequately vented. Y 108A Overflow screened with #4 mesh screen SIG | 25pts | SO | SS04 | R309-515-7(7)(d), R309-545-13(3) | Overflow pipes on junction and collection boxes shall comply with R309-545 and be screened with No. 4 mesh non-corrodible screens. This significant deficiency must be corrected within 120 days of notification or have a corrective action plan approved by DDW. C 108B Overflow has a minimum of 12 inch clearance above flood rim of receiving basin SIG | 25pts | SO | SS14 | R309-515-7(7)(d), R309-545 | Overflow pipes on junction and collection boxes shall comply with R309-545 and discharge a minimum of 12 inches above the ground surface or rim of the receiving basin. This significant deficiency must be corrected within 120 days of notification or have a corrective action plan approved by DDW. C 109 Drain has minimum of 12 inch clearance above flood rim of receiving basin SIG | 25pts | SO | SS14 | R309-515-7(7)(d), R309-545 | Overflow pipes on junction and collection boxes shall comply with R309-545 and discharge a minimum of 12 inches above the ground surface or rim of the receiving basin. This significant deficiency must be corrected within 120 days of notification or have a corrective action plan approved by DDW. C DEQ | Drinking Water Run Date: 09/23/2025 10:35:57 | Rating: Approved UTAH27051 ZION CANYON WATER SYSTEM page 17 of 55 110 Spring collection area graded and no evidence of water ponding or flow on surface? SIG | 25pts | SO | SS06 | R309-515-7(7)(i) | Rule requires the spring to be developed as thoroughly as possible to minimize the possibility of excess water ponding within the collection area. This significant deficiency must be corrected within 120 days of notification or have a corrective action plan approved by DDW. C 111 If a liner is present, spring liner integrity is maintained. SIG | 50pts | SO | SS19 | R309-515-7(7)(b)(iv) | If a liner is present, it shall be installed to assure its integrity. No sharp-edged stones or stones two inches or larger shall be located within two inches of the liner. This significant deficiency must be corrected within 120 days of notification or have a corrective action plan approved by DDW. C 112 No deep-rooted vegetation is within the 50 ft collection area. SIG | 25pts | SO | SS07 | R309-515-7(7)(f) | All deep-rooted vegetation within the fenced collection area shall be removed by a means not negatively affecting water quality. This significant deficiency must be corrected within 120 days of notification or have a corrective action plan approved by DDW. C 113 No roots seen in collection boxes and junctions. SIG | 25pts | SO | SS08 | R309-105-10(4)(a), R309-515-8(1)(a) | Spring collection areas shall be periodically (preferably annually) cleared of deep-rooted vegetation to prevent root growth from clogging collection lines. This significant deficiency must be corrected within 120 days of notification or have a corrective action plan approved by DDW. C 114 Is a spring collection box present? ... if yes, answer the following question(s) MIN | 5pts | SO | L014 | R309-515-7(7)(c) | Rule requires each spring collection area to be provided with at least one collection box to permit spring inspection and testing. Y 114A Spring box has shoe box type lid with 2 inch overlap around frame SIG | 25pts | SO | SS09 | R309-515-7(7)(d), R309-545-14 (2) | Access openings shall comply with R309-545 and be provided with a close-fitting, solid shoebox-type cover that extends down around the frame at least 2 inches. This significant deficiency must be corrected within 120 days of notification or have a corrective action plan approved by DDW. C 114B Spring box lid is gasketed SIG | 25pts | SO | SS10 | R309-515-7(7)(d), R309-545-14 (2) | Access openings shall comply with R309-545 and be provided with a cover furnished with a gasket between the lid and frame. This significant deficiency must be corrected within 120 days of notification or have a corrective action plan approved by DDW. C DEQ | Drinking Water Run Date: 09/23/2025 10:35:57 | Rating: Approved UTAH27051 ZION CANYON WATER SYSTEM page 18 of 55 ST001 - BIRCH RESERVOIR - Active 114C Spring box lid does not show evidence of a vacuum. MIN | 5pts | SO | SS11 | R309-515-7(7)(d), R309-545-15 | Rule requires junction boxes and collection boxes to comply with R309-545 with respect to venting. Therefore, a junction or collection box requires a vent to be fitted with #14 mesh or finer non-corrodible screen, be fitted with a protective heavy-gauge screen or covering if 6 inches in diameter or greater, be down-turned and shielded to prevent the entrance of contaminants, be located and sized to avoid blockage during winter, and have the end of the vent discharge a minimum of 24 inches above the earth on buried structures. C 114D Spring box opening is at least 4 inches above the surface of the box or 18 inches above an earthen cover if the box is buried. MIN | 15pts | SO | SS12 | R309-515-7(7)(d), R309-545-14 (1), | Access openings shall comply with R309-545 and be framed at least 4 inches above the surface of the spring box roof at the opening or 18 inches above the ground surface on a buried spring box. C 114E Spring box lid is locked SIG | 25pts | SO | SS13 | R309-515-7(7)(d), R309-545-14 (3) | Access openings shall comply with R309-545 and the lids to the openings shall be locked. This significant deficiency must be corrected within 120 days of notification or have a corrective action plan approved by DDW. C 114F All openings/penetrations in the spring collection box are sealed. SIG | 50pts | SO | SS20 | R309-515-7(7)(d), R309-545-9(1) and (2) | All junction and collection boxes shall comply with R309-545 and shall have suitable watertight roofs and sidewalls that exclude birds, animals, insects, and excessive dust. All openings shall be kept to a minimum and be watertight. Pipes that may contain water of lesser quality than drinking water shall not penetrate the spring box. This significant deficiency must be corrected within 120 days of notification or have a corrective action plan approved by DDW. C 115 Is a spring box vent present? ... if yes, answer the following question(s) MIN | 5pts | SO | SS11 | R309-515-7(7)(d), R309-545-15 | Rule requires junction boxes and collection boxes to comply with R309-545 with respect to venting. Therefore, a junction or collection box requires a vent to be fitted with #14 mesh or finer non-corrodible screen, be fitted with a protective heavy-gauge screen or covering if 6 inches in diameter or greater, be down-turned and shielded to prevent the entrance of contaminants, be located and sized to avoid blockage during winter, and have the end of the vent discharge a minimum of 24 inches above the earth on buried structures. N (Notes: no vent) 116 Spring has a permanent flow-measuring device. MIN | 5pts | SO | SS01 | R309-515-7(7)(h) | Rule requires a spring to have a permanent flow measuring device. C 117 Is this facility Active or Inactive?A 118 Storage tank capacity in gallons (from SDWIS; if different explain why in the comments) 650000 DEQ | Drinking Water Run Date: 09/23/2025 10:35:57 | Rating: Approved UTAH27051 ZION CANYON WATER SYSTEM page 19 of 55 119 There are no undocumented drinking water facilities (i.e. tanks, pump stations, treatment facilities, etc.) or recent modifications that have not gone through DDW review SIG | 50pts | SM | G001 | R309-100-5(2), R309-500-6, R309-500-9, R309-500-9(2) and (3) | Rule requires complete plans & specification for all public drinking water projects to be approved in writing by the Director. Any facility found that has not started DDW review shall be considered unapproved. This significant deficiency must be corrected within 120 days of notification or have a corrective action plan approved by DDW. C 120 Ladders, ladder guards, platform railings, or safely located entrance hatches are provided where applicable. MIN | 15pts | FW | V004 | R309-545-18 | Rule requires ladders, ladder guards, platform railings, and safely located entrance hatches where applicable for water storage tanks and requires safety practices to conform to pertinent laws and regulations of the Utah Occupational Safety and Health Division. C 121 Tank is vented. SIG | 25pts | FW | VL02 | R309-545-15 | Rule requires drinking water storage tanks to be vented. Overflows cannot be considered or used as vents. This significant deficiency must be corrected within 120 days of notification or have a corrective action plan approved by DDW. C 122 Are air vents present? ... if yes, answer the following question(s)Y 122A Vent is either down-turned or shielded from contaminants (at least 2 inches below the bottom of the opening) SIG | 25pts | FW | V005 | R309-545-15(1) | Rule requires inverted vents on water storage tanks to be down-turned a minimum of 2 inches below any opening and shielded to prevent the entrance of contaminants. This significant deficiency must be corrected within 120 days of notification or have a corrective action plan approved by DDW. C 122B End of vent terminates at least 24 inches above earthen cover (buried tank) and is located and sized to avoid blockage during winter. MIN | 15pts | FW | V006 | R309-545-15(2) | For buried structures, the rule requires the end of the vent discharge to be a minimum of 24 inches above the earthen covering. C 122C Vent covered with #14 or finer non-corrodible mesh screen. SIG | 25pts | FW | V007 | R309-545-15(4) | Rule requires a water storage tank vent to be fitted with #14 mesh or finer non-corrodible screen and vents 6-inches or greater in diameter to be fitted with additional heavy gauge screen or substantial covering to protect the #14 mesh screen from vandalism or damage. This significant deficiency must be corrected within 120 days of notification or have a compliance action plan approved by DDW. C 122D Vent 6-inch diameter and larger protected with additional heavy-gauge screen or substantial covering. MIN | 5pts | FW | V035 | R309-545-15(5) | Rule requires vents that are 6-inch diameter or greater to be fitted with additional heavy gauge screen or substantial covering, which will protect the No. 14 mesh screen against vandalism or damage. C DEQ | Drinking Water Run Date: 09/23/2025 10:35:57 | Rating: Approved UTAH27051 ZION CANYON WATER SYSTEM page 20 of 55 123 Are access openings present? ... if yes, answer the following question(s) MIN | 15pts | FW | VL03 | R309-545-14 and 14(1) | Rule requires drinking water storage tanks to be designed with reasonably convenient access to the interior for cleaning and maintenance. Y 123A Access opening framed at least 4 inches above roof surface or 18 inches above earthen cover. MIN | 15pts | FW | V008 | R309-545-14(1) | Rule requires tank access opening to be framed at least 4 inches above the surface of the roof, or on a buried tank, to be at least 18 inches above any earthen cover over the tank. C 123B Access opening shoe box type with at least 2 inches of overlap SIG | 25pts | FW | V010 | R309-545-14(2) | Rule requires the frame of an access opening to be provided with a close fitting solid shoebox type cover which extends down around the frame at least two inches and is furnished with a gasket(s) between the lid and frame. This significant deficiency must be corrected within 120 days of notification or have a corrective action plan approved by DDW. C 123C Access opening lid properly gasketed SIG | 25pts | FW | V009 | R309-545-14(2) | Rule requires the access opening to a tank to be furnished with a gasket between the lid and frame. This significant deficiency must be corrected within 120 days of notification or have a corrective action plan approved by DDW. C 124 Access opening locked SIG | 25pts | FW | V029 | R309-545-14(3) | Rule requires the lid to any access opening to have a locking device. This significant deficiency must be corrected within 120 days of notification or have a corrective action plan approved by DDW. C 125 Roof or wall penetrations sealed SIG | 100pts | FW | V017 | R309-545-6(1) and 545-9 | Rule requires openings in a storage tank roof or top, designed to accommodate control apparatus or pump columns, to be welded, gasketed, or curbed and sleeved and to have additional proper shielding to prevent vandalism. This significant deficiency must be corrected within 120 days of notification or have a corrective action plan approved by DDW. C 126 Area surrounding ground-level or buried storage tank is graded to prevent surface water from standing within 50 feet. SIG | 25pts | TR | V001 | R309-545-7(4) | Rule requires the area surrounding a ground-level or buried water storage tank be graded in a manner to prevent surface water from standing within 50 feet of the tank. This significant deficiency must be corrected within 120 days of notification or have a corrective action plan approved by DDW. C 127 Storage tank roof is sloped to prevent ponding MIN | 15pts | FW | V003 | R309-545-9(4) | Rule requires drainage of storage tank roofs to eliminate water ponding. C 128 Are there cracks in the walls or roof of the storage tank? (if yes, select only one of the following options) N DEQ | Drinking Water Run Date: 09/23/2025 10:35:57 | Rating: Approved UTAH27051 ZION CANYON WATER SYSTEM page 21 of 55 ST002 - GROTTO RESERVOIR - Active 129 Is a tank overflow present? ... if yes, answer the following question(s) SIG | 25pts | FW | VL01 | R309-545-13 | Rule requires all storage tanks to be provided with an overflow that discharges at an an elevation between 12 and 24 inches above the ground surface or the rim of the receiving basin. This significant deficiency must be corrected within 120 days of notification or have a corrective action plan approved by DDW. Y 129A Overflow line discharges at least 12 inches above ground or the flood rim of receiving basin? SIG | 25pts | FW | V011 | R309-545-13 | Rule requires all water storage tanks to be provided with an overflow that discharges at an elevation between 12 and 24 inches above the ground surface or the rim of the receiving basin. C 129B Overflow line covered with #4 mesh non-corrodible screen SIG | 25pts | FW | V012 | R309-545-13(3) | Rule requires overflow pipes to be screened with #4 mesh non-corrodible screens installed at a location least susceptible to damage by vandalism. This significant deficiency must be corrected within 120 days of notification or have a corrective action plan approved by DDW. C 129C Overflow line connected or discharges to a sanitary sewer drain? SIG | 50pts | FW | V013 | R309-545-13(5) | Rule prohibits overflow pipes from connecting to, or discharging into, a sanitary sewer system. This significant deficiency must be corrected within 120 days of notification or have a corrective action plan approved by DDW. C 130 Are the drain line and overflow combined?Y 131 Is this facility Active or Inactive?A 132 Storage tank capacity in gallons (from SDWIS; if different explain why in the comments) 50000 133 There are no undocumented drinking water facilities (i.e. tanks, pump stations, treatment facilities, etc.) or recent modifications that have not gone through DDW review SIG | 50pts | SM | G001 | R309-100-5(2), R309-500-6, R309-500-9, R309-500-9(2) and (3) | Rule requires complete plans & specification for all public drinking water projects to be approved in writing by the Director. Any facility found that has not started DDW review shall be considered unapproved. This significant deficiency must be corrected within 120 days of notification or have a corrective action plan approved by DDW. C 134 Ladders, ladder guards, platform railings, or safely located entrance hatches are provided where applicable. MIN | 15pts | FW | V004 | R309-545-18 | Rule requires ladders, ladder guards, platform railings, and safely located entrance hatches where applicable for water storage tanks and requires safety practices to conform to pertinent laws and regulations of the Utah Occupational Safety and Health Division. C DEQ | Drinking Water Run Date: 09/23/2025 10:35:57 | Rating: Approved UTAH27051 ZION CANYON WATER SYSTEM page 22 of 55 135 Tank is vented. SIG | 25pts | FW | VL02 | R309-545-15 | Rule requires drinking water storage tanks to be vented. Overflows cannot be considered or used as vents. This significant deficiency must be corrected within 120 days of notification or have a corrective action plan approved by DDW. C 136 Are air vents present? ... if yes, answer the following question(s)Y 136A Vent is either down-turned or shielded from contaminants (at least 2 inches below the bottom of the opening) SIG | 25pts | FW | V005 | R309-545-15(1) | Rule requires inverted vents on water storage tanks to be down-turned a minimum of 2 inches below any opening and shielded to prevent the entrance of contaminants. This significant deficiency must be corrected within 120 days of notification or have a corrective action plan approved by DDW. C 136B End of vent terminates at least 24 inches above earthen cover (buried tank) and is located and sized to avoid blockage during winter. MIN | 15pts | FW | V006 | R309-545-15(2) | For buried structures, the rule requires the end of the vent discharge to be a minimum of 24 inches above the earthen covering. C 136C Vent covered with #14 or finer non-corrodible mesh screen. SIG | 25pts | FW | V007 | R309-545-15(4) | Rule requires a water storage tank vent to be fitted with #14 mesh or finer non-corrodible screen and vents 6-inches or greater in diameter to be fitted with additional heavy gauge screen or substantial covering to protect the #14 mesh screen from vandalism or damage. This significant deficiency must be corrected within 120 days of notification or have a compliance action plan approved by DDW. C 136D Vent 6-inch diameter and larger protected with additional heavy-gauge screen or substantial covering. MIN | 5pts | FW | V035 | R309-545-15(5) | Rule requires vents that are 6-inch diameter or greater to be fitted with additional heavy gauge screen or substantial covering, which will protect the No. 14 mesh screen against vandalism or damage. C 137 Are access openings present? ... if yes, answer the following question(s) MIN | 15pts | FW | VL03 | R309-545-14 and 14(1) | Rule requires drinking water storage tanks to be designed with reasonably convenient access to the interior for cleaning and maintenance. Y 137A Access opening framed at least 4 inches above roof surface or 18 inches above earthen cover. MIN | 15pts | FW | V008 | R309-545-14(1) | Rule requires tank access opening to be framed at least 4 inches above the surface of the roof, or on a buried tank, to be at least 18 inches above any earthen cover over the tank. C 137B Access opening shoe box type with at least 2 inches of overlap SIG | 25pts | FW | V010 | R309-545-14(2) | Rule requires the frame of an access opening to be provided with a close fitting solid shoebox type cover which extends down around the frame at least two inches and is furnished with a gasket(s) between the lid and frame. This significant deficiency must be corrected within 120 days of notification or have a corrective action plan approved by DDW. C DEQ | Drinking Water Run Date: 09/23/2025 10:35:57 | Rating: Approved UTAH27051 ZION CANYON WATER SYSTEM page 23 of 55 137C Access opening lid properly gasketed SIG | 25pts | FW | V009 | R309-545-14(2) | Rule requires the access opening to a tank to be furnished with a gasket between the lid and frame. This significant deficiency must be corrected within 120 days of notification or have a corrective action plan approved by DDW. C 138 Access opening locked SIG | 25pts | FW | V029 | R309-545-14(3) | Rule requires the lid to any access opening to have a locking device. This significant deficiency must be corrected within 120 days of notification or have a corrective action plan approved by DDW. C 139 Roof or wall penetrations sealed SIG | 100pts | FW | V017 | R309-545-6(1) and 545-9 | Rule requires openings in a storage tank roof or top, designed to accommodate control apparatus or pump columns, to be welded, gasketed, or curbed and sleeved and to have additional proper shielding to prevent vandalism. This significant deficiency must be corrected within 120 days of notification or have a corrective action plan approved by DDW. C 140 Area surrounding ground-level or buried storage tank is graded to prevent surface water from standing within 50 feet. SIG | 25pts | TR | V001 | R309-545-7(4) | Rule requires the area surrounding a ground-level or buried water storage tank be graded in a manner to prevent surface water from standing within 50 feet of the tank. This significant deficiency must be corrected within 120 days of notification or have a corrective action plan approved by DDW. C 141 Storage tank roof is sloped to prevent ponding MIN | 15pts | FW | V003 | R309-545-9(4) | Rule requires drainage of storage tank roofs to eliminate water ponding. C 142 Are there cracks in the walls or roof of the storage tank? (if yes, select only one of the following options) N 143 Is a tank overflow present? ... if yes, answer the following question(s) SIG | 25pts | FW | VL01 | R309-545-13 | Rule requires all storage tanks to be provided with an overflow that discharges at an an elevation between 12 and 24 inches above the ground surface or the rim of the receiving basin. This significant deficiency must be corrected within 120 days of notification or have a corrective action plan approved by DDW. Y 143A Overflow line discharges at least 12 inches above ground or the flood rim of receiving basin? SIG | 25pts | FW | V011 | R309-545-13 | Rule requires all water storage tanks to be provided with an overflow that discharges at an elevation between 12 and 24 inches above the ground surface or the rim of the receiving basin. C 143B Overflow line covered with #4 mesh non-corrodible screen SIG | 25pts | FW | V012 | R309-545-13(3) | Rule requires overflow pipes to be screened with #4 mesh non-corrodible screens installed at a location least susceptible to damage by vandalism. This significant deficiency must be corrected within 120 days of notification or have a corrective action plan approved by DDW. C DEQ | Drinking Water Run Date: 09/23/2025 10:35:57 | Rating: Approved UTAH27051 ZION CANYON WATER SYSTEM page 24 of 55 ST004 - OAK CREEK 50K - Active 143C Overflow line connected or discharges to a sanitary sewer drain? SIG | 50pts | FW | V013 | R309-545-13(5) | Rule prohibits overflow pipes from connecting to, or discharging into, a sanitary sewer system. This significant deficiency must be corrected within 120 days of notification or have a corrective action plan approved by DDW. C 144 Are the drain line and overflow combined?Y 145 Is this facility Active or Inactive?A 146 Storage tank capacity in gallons (from SDWIS; if different explain why in the comments) 50000 147 There are no undocumented drinking water facilities (i.e. tanks, pump stations, treatment facilities, etc.) or recent modifications that have not gone through DDW review SIG | 50pts | SM | G001 | R309-100-5(2), R309-500-6, R309-500-9, R309-500-9(2) and (3) | Rule requires complete plans & specification for all public drinking water projects to be approved in writing by the Director. Any facility found that has not started DDW review shall be considered unapproved. This significant deficiency must be corrected within 120 days of notification or have a corrective action plan approved by DDW. C 148 Ladders, ladder guards, platform railings, or safely located entrance hatches are provided where applicable. MIN | 15pts | FW | V004 | R309-545-18 | Rule requires ladders, ladder guards, platform railings, and safely located entrance hatches where applicable for water storage tanks and requires safety practices to conform to pertinent laws and regulations of the Utah Occupational Safety and Health Division. C 149 Tank is vented. SIG | 25pts | FW | VL02 | R309-545-15 | Rule requires drinking water storage tanks to be vented. Overflows cannot be considered or used as vents. This significant deficiency must be corrected within 120 days of notification or have a corrective action plan approved by DDW. C 150 Are air vents present? ... if yes, answer the following question(s)Y 150A Vent is either down-turned or shielded from contaminants (at least 2 inches below the bottom of the opening) SIG | 25pts | FW | V005 | R309-545-15(1) | Rule requires inverted vents on water storage tanks to be down-turned a minimum of 2 inches below any opening and shielded to prevent the entrance of contaminants. This significant deficiency must be corrected within 120 days of notification or have a corrective action plan approved by DDW. C 150B End of vent terminates at least 24 inches above earthen cover (buried tank) and is located and sized to avoid blockage during winter. MIN | 15pts | FW | V006 | R309-545-15(2) | For buried structures, the rule requires the end of the vent discharge to be a minimum of 24 inches above the earthen covering. C DEQ | Drinking Water Run Date: 09/23/2025 10:35:57 | Rating: Approved UTAH27051 ZION CANYON WATER SYSTEM page 25 of 55 150C Vent covered with #14 or finer non-corrodible mesh screen. SIG | 25pts | FW | V007 | R309-545-15(4) | Rule requires a water storage tank vent to be fitted with #14 mesh or finer non-corrodible screen and vents 6-inches or greater in diameter to be fitted with additional heavy gauge screen or substantial covering to protect the #14 mesh screen from vandalism or damage. This significant deficiency must be corrected within 120 days of notification or have a compliance action plan approved by DDW. C 150D Vent 6-inch diameter and larger protected with additional heavy-gauge screen or substantial covering. MIN | 5pts | FW | V035 | R309-545-15(5) | Rule requires vents that are 6-inch diameter or greater to be fitted with additional heavy gauge screen or substantial covering, which will protect the No. 14 mesh screen against vandalism or damage. C 151 Are access openings present? ... if yes, answer the following question(s) MIN | 15pts | FW | VL03 | R309-545-14 and 14(1) | Rule requires drinking water storage tanks to be designed with reasonably convenient access to the interior for cleaning and maintenance. Y 151A Access opening framed at least 4 inches above roof surface or 18 inches above earthen cover. MIN | 15pts | FW | V008 | R309-545-14(1) | Rule requires tank access opening to be framed at least 4 inches above the surface of the roof, or on a buried tank, to be at least 18 inches above any earthen cover over the tank. C 151B Access opening shoe box type with at least 2 inches of overlap SIG | 25pts | FW | V010 | R309-545-14(2) | Rule requires the frame of an access opening to be provided with a close fitting solid shoebox type cover which extends down around the frame at least two inches and is furnished with a gasket(s) between the lid and frame. This significant deficiency must be corrected within 120 days of notification or have a corrective action plan approved by DDW. C 151C Access opening lid properly gasketed SIG | 25pts | FW | V009 | R309-545-14(2) | Rule requires the access opening to a tank to be furnished with a gasket between the lid and frame. This significant deficiency must be corrected within 120 days of notification or have a corrective action plan approved by DDW. C 152 Access opening locked SIG | 25pts | FW | V029 | R309-545-14(3) | Rule requires the lid to any access opening to have a locking device. This significant deficiency must be corrected within 120 days of notification or have a corrective action plan approved by DDW. C 153 Roof or wall penetrations sealed SIG | 100pts | FW | V017 | R309-545-6(1) and 545-9 | Rule requires openings in a storage tank roof or top, designed to accommodate control apparatus or pump columns, to be welded, gasketed, or curbed and sleeved and to have additional proper shielding to prevent vandalism. This significant deficiency must be corrected within 120 days of notification or have a corrective action plan approved by DDW. C DEQ | Drinking Water Run Date: 09/23/2025 10:35:57 | Rating: Approved UTAH27051 ZION CANYON WATER SYSTEM page 26 of 55 ST005 - OAK CREEK 200K - Active 154 Area surrounding ground-level or buried storage tank is graded to prevent surface water from standing within 50 feet. SIG | 25pts | TR | V001 | R309-545-7(4) | Rule requires the area surrounding a ground-level or buried water storage tank be graded in a manner to prevent surface water from standing within 50 feet of the tank. This significant deficiency must be corrected within 120 days of notification or have a corrective action plan approved by DDW. C 155 Storage tank roof is sloped to prevent ponding MIN | 15pts | FW | V003 | R309-545-9(4) | Rule requires drainage of storage tank roofs to eliminate water ponding. C 156 Are there cracks in the walls or roof of the storage tank? (if yes, select only one of the following options) N 157 Is a tank overflow present? ... if yes, answer the following question(s) SIG | 25pts | FW | VL01 | R309-545-13 | Rule requires all storage tanks to be provided with an overflow that discharges at an an elevation between 12 and 24 inches above the ground surface or the rim of the receiving basin. This significant deficiency must be corrected within 120 days of notification or have a corrective action plan approved by DDW. Y 157A Overflow line discharges at least 12 inches above ground or the flood rim of receiving basin? SIG | 25pts | FW | V011 | R309-545-13 | Rule requires all water storage tanks to be provided with an overflow that discharges at an elevation between 12 and 24 inches above the ground surface or the rim of the receiving basin. C 157B Overflow line covered with #4 mesh non-corrodible screen SIG | 25pts | FW | V012 | R309-545-13(3) | Rule requires overflow pipes to be screened with #4 mesh non-corrodible screens installed at a location least susceptible to damage by vandalism. This significant deficiency must be corrected within 120 days of notification or have a corrective action plan approved by DDW. C 157C Overflow line connected or discharges to a sanitary sewer drain? SIG | 50pts | FW | V013 | R309-545-13(5) | Rule prohibits overflow pipes from connecting to, or discharging into, a sanitary sewer system. This significant deficiency must be corrected within 120 days of notification or have a corrective action plan approved by DDW. C 158 Are the drain line and overflow combined?Y 159 Is this facility Active or Inactive?A 160 Storage tank capacity in gallons (from SDWIS; if different explain why in the comments) 200000 DEQ | Drinking Water Run Date: 09/23/2025 10:35:57 | Rating: Approved UTAH27051 ZION CANYON WATER SYSTEM page 27 of 55 161 There are no undocumented drinking water facilities (i.e. tanks, pump stations, treatment facilities, etc.) or recent modifications that have not gone through DDW review SIG | 50pts | SM | G001 | R309-100-5(2), R309-500-6, R309-500-9, R309-500-9(2) and (3) | Rule requires complete plans & specification for all public drinking water projects to be approved in writing by the Director. Any facility found that has not started DDW review shall be considered unapproved. This significant deficiency must be corrected within 120 days of notification or have a corrective action plan approved by DDW. C 162 Ladders, ladder guards, platform railings, or safely located entrance hatches are provided where applicable. MIN | 15pts | FW | V004 | R309-545-18 | Rule requires ladders, ladder guards, platform railings, and safely located entrance hatches where applicable for water storage tanks and requires safety practices to conform to pertinent laws and regulations of the Utah Occupational Safety and Health Division. C 163 Tank is vented. SIG | 25pts | FW | VL02 | R309-545-15 | Rule requires drinking water storage tanks to be vented. Overflows cannot be considered or used as vents. This significant deficiency must be corrected within 120 days of notification or have a corrective action plan approved by DDW. C 164 Are air vents present? ... if yes, answer the following question(s)Y 164A Vent is either down-turned or shielded from contaminants (at least 2 inches below the bottom of the opening) SIG | 25pts | FW | V005 | R309-545-15(1) | Rule requires inverted vents on water storage tanks to be down-turned a minimum of 2 inches below any opening and shielded to prevent the entrance of contaminants. This significant deficiency must be corrected within 120 days of notification or have a corrective action plan approved by DDW. C 164B End of vent terminates at least 24 inches above earthen cover (buried tank) and is located and sized to avoid blockage during winter. MIN | 15pts | FW | V006 | R309-545-15(2) | For buried structures, the rule requires the end of the vent discharge to be a minimum of 24 inches above the earthen covering. C 164C Vent covered with #14 or finer non-corrodible mesh screen. SIG | 25pts | FW | V007 | R309-545-15(4) | Rule requires a water storage tank vent to be fitted with #14 mesh or finer non-corrodible screen and vents 6-inches or greater in diameter to be fitted with additional heavy gauge screen or substantial covering to protect the #14 mesh screen from vandalism or damage. This significant deficiency must be corrected within 120 days of notification or have a compliance action plan approved by DDW. C 164D Vent 6-inch diameter and larger protected with additional heavy-gauge screen or substantial covering. MIN | 5pts | FW | V035 | R309-545-15(5) | Rule requires vents that are 6-inch diameter or greater to be fitted with additional heavy gauge screen or substantial covering, which will protect the No. 14 mesh screen against vandalism or damage. C DEQ | Drinking Water Run Date: 09/23/2025 10:35:57 | Rating: Approved UTAH27051 ZION CANYON WATER SYSTEM page 28 of 55 165 Are access openings present? ... if yes, answer the following question(s) MIN | 15pts | FW | VL03 | R309-545-14 and 14(1) | Rule requires drinking water storage tanks to be designed with reasonably convenient access to the interior for cleaning and maintenance. Y 165A Access opening framed at least 4 inches above roof surface or 18 inches above earthen cover. MIN | 15pts | FW | V008 | R309-545-14(1) | Rule requires tank access opening to be framed at least 4 inches above the surface of the roof, or on a buried tank, to be at least 18 inches above any earthen cover over the tank. C 165B Access opening shoe box type with at least 2 inches of overlap SIG | 25pts | FW | V010 | R309-545-14(2) | Rule requires the frame of an access opening to be provided with a close fitting solid shoebox type cover which extends down around the frame at least two inches and is furnished with a gasket(s) between the lid and frame. This significant deficiency must be corrected within 120 days of notification or have a corrective action plan approved by DDW. C 165C Access opening lid properly gasketed SIG | 25pts | FW | V009 | R309-545-14(2) | Rule requires the access opening to a tank to be furnished with a gasket between the lid and frame. This significant deficiency must be corrected within 120 days of notification or have a corrective action plan approved by DDW. C 166 Access opening locked SIG | 25pts | FW | V029 | R309-545-14(3) | Rule requires the lid to any access opening to have a locking device. This significant deficiency must be corrected within 120 days of notification or have a corrective action plan approved by DDW. C 167 Roof or wall penetrations sealed SIG | 100pts | FW | V017 | R309-545-6(1) and 545-9 | Rule requires openings in a storage tank roof or top, designed to accommodate control apparatus or pump columns, to be welded, gasketed, or curbed and sleeved and to have additional proper shielding to prevent vandalism. This significant deficiency must be corrected within 120 days of notification or have a corrective action plan approved by DDW. C 168 Area surrounding ground-level or buried storage tank is graded to prevent surface water from standing within 50 feet. SIG | 25pts | TR | V001 | R309-545-7(4) | Rule requires the area surrounding a ground-level or buried water storage tank be graded in a manner to prevent surface water from standing within 50 feet of the tank. This significant deficiency must be corrected within 120 days of notification or have a corrective action plan approved by DDW. C 169 Storage tank roof is sloped to prevent ponding MIN | 15pts | FW | V003 | R309-545-9(4) | Rule requires drainage of storage tank roofs to eliminate water ponding. C 170 Are there cracks in the walls or roof of the storage tank? (if yes, select only one of the following options) N DEQ | Drinking Water Run Date: 09/23/2025 10:35:57 | Rating: Approved UTAH27051 ZION CANYON WATER SYSTEM page 29 of 55 HD001 - BIRCH SPRING HYDRO -- Hydropneumatic Tanks - Active 171 Is a tank overflow present? ... if yes, answer the following question(s) SIG | 25pts | FW | VL01 | R309-545-13 | Rule requires all storage tanks to be provided with an overflow that discharges at an an elevation between 12 and 24 inches above the ground surface or the rim of the receiving basin. This significant deficiency must be corrected within 120 days of notification or have a corrective action plan approved by DDW. Y 171A Overflow line discharges at least 12 inches above ground or the flood rim of receiving basin? SIG | 25pts | FW | V011 | R309-545-13 | Rule requires all water storage tanks to be provided with an overflow that discharges at an elevation between 12 and 24 inches above the ground surface or the rim of the receiving basin. C 171B Overflow line covered with #4 mesh non-corrodible screen SIG | 25pts | FW | V012 | R309-545-13(3) | Rule requires overflow pipes to be screened with #4 mesh non-corrodible screens installed at a location least susceptible to damage by vandalism. This significant deficiency must be corrected within 120 days of notification or have a corrective action plan approved by DDW. C 171C Overflow line connected or discharges to a sanitary sewer drain? SIG | 50pts | FW | V013 | R309-545-13(5) | Rule prohibits overflow pipes from connecting to, or discharging into, a sanitary sewer system. This significant deficiency must be corrected within 120 days of notification or have a corrective action plan approved by DDW. C 172 Are the drain line and overflow combined?Y 173 There are no undocumented drinking water facilities (i.e. tanks, pump stations, treatment facilities, etc.) or recent modifications that have not gone through DDW review SIG | 50pts | SM | G001 | R309-100-5(2), R309-500-6, R309-500-9, R309-500-9(2) and (3) | Rule requires complete plans & specification for all public drinking water projects to be approved in writing by the Director. Any facility found that has not started DDW review shall be considered unapproved. This significant deficiency must be corrected within 120 days of notification or have a corrective action plan approved by DDW. C 174 A tank located below ground allows for adequate drainage, ventilation, maintenance, and flood protection. MIN | 15pts | PU | PT14 | R309-540-6(2) | Rule requires diaphragm or air tanks and appurtenances located below ground to have adequate provisions for drainage, ventilation, maintenance, and flood protection. C 175 Is there a means to measure pressure to verify the tank is pressurizing properly? MIN | 15pts | PU | PT08 | R309-540-6(3) | A pressure gauge shall be installed on the pressure tank inlet line. C DEQ | Drinking Water Run Date: 09/23/2025 10:35:57 | Rating: Approved UTAH27051 ZION CANYON WATER SYSTEM page 30 of 55 PF001 - LOWER GROTTO PUMP -- Pump Stations - Active 176 Pump station/Hydropneumatic tank and controls not protected against hazard? SIG | 25pts | PU | PT13 | R309-540-5(1)(a)(i) | The pump station site meets the requirements for sanitary protection of water quality, hydraulics of the system, and protection against interruption of service by fire, flood, or any other hazard. This significant deficiency must be corrected within 120 days of notification or have a corrective action plan approved by DDW. C 177 Is this facility Active or Inactive?A 178 There are no undocumented drinking water facilities (i.e. tanks, pump stations, treatment facilities, etc.) or recent modifications that have not gone through DDW review SIG | 50pts | SM | G001 | R309-100-5(2), R309-500-6, R309-500-9, R309-500-9(2) and (3) | Rule requires complete plans & specification for all public drinking water projects to be approved in writing by the Director. Any facility found that has not started DDW review shall be considered unapproved. This significant deficiency must be corrected within 120 days of notification or have a corrective action plan approved by DDW. C 179 Pump Type (Centrifugal, Hand pump, Jet, Positive Displacement, Screw, Submersible, Vertical turbine) Centrifugal 180 If the pump station is used to pressurize the distribution system, does it have at least two functioning pumping units? ... if yes, answer the following question(s) SIG | 25pts | PU | PS18 | R309-540-5(4)(b) | Rule states inline booster pumps, withdrawing water directly from distribution lines without storage and feeding water directly into distribution lines, shall have at least two pumping units. This significant deficiency must be corrected within 120 days of notification or have a corrective action plan approved by DDW. NA (Notes: pumps to tank) 181 Pump station building and equipment are protected from flooding. MIN | 15pts | PU | PS13 | R309-540-5(1)(a)(ii), R309-540-5(2)(a)(iii) | Pump station access shall be 6" above surrounding ground and located at least 3’ above 100-year flood elevation or highest recorded flood elevation; station is accessible at all times unless it can be taken out of service when inaccessible. C 182 There are no unprotected cross-connections in the pump station. SIG | 50pts | PU | PS15 | R309-105-12(1) | Cross connections are not allowed unless controlled by an approved and properly operating backflow prevention assembly or device. This significant deficiency must be corrected within 120 days of notification or have a corrective action plan approved by DDW. C 183 Hose connections are equipped with a backflow prevention device MIN | 15pts | SM | M007 | R309-105-12(2) | Rule requires each public water system to have a cross connection control program that includes test history and documentation of on-going enforcement activities. C 184 Discharge piping has a pressure gauge. MIN | 15pts | PU | PS03 | R309-540-5 (6)(c)(i) | Rule requires that a standard pressure gauge be installed on the pump discharge line. C 185 Does the pumping facility have an air relief valve located on the discharge piping? ... if yes, answer the following question(s) Y DEQ | Drinking Water Run Date: 09/23/2025 10:35:57 | Rating: Approved UTAH27051 ZION CANYON WATER SYSTEM page 31 of 55 PF002 - BIRCH SPRING PUMP -- Pump Stations - Active 185A End of air relief piping downturned SIG | 25pts | PU | PS12 | R309-550-6(6)(b), R309-540-6(2) | The open end of the air relief vent pipe from automatic valves shall be provided with a downward elbow. This significant deficiency must be corrected within 120 days of notification or have a corrective action plan approved by DDW. C 185B End of air relief piping covered with #14 mesh screen SIG | 25pts | PU | PS10 | R309-550-6(6)(b), R309-540-6(2) | The open end of the air relief vent pipe from automatic valves shall be provided with a #14 mesh, non- corrodible screen. This significant deficiency must be corrected within 120 days of notification or have a corrective action plan approved by DDW. C 185C End of air relief piping terminates at least 6 inches above floor SIG | 25pts | PU | PS11 | R309-550-6(6)(b), R309-540-6(2) | Rule requires that an air release valve discharge line terminate a minimum of 6 inches above the floor. C 186 Pump station properly secured MIN | 15pts | PU | PS33 | R309-540-5(1)(a)(v) | The pump station is protected to prevent vandalism and entrance by animals or unauthorized persons. C 187 Is this facility Active or Inactive?A 188 There are no undocumented drinking water facilities (i.e. tanks, pump stations, treatment facilities, etc.) or recent modifications that have not gone through DDW review SIG | 50pts | SM | G001 | R309-100-5(2), R309-500-6, R309-500-9, R309-500-9(2) and (3) | Rule requires complete plans & specification for all public drinking water projects to be approved in writing by the Director. Any facility found that has not started DDW review shall be considered unapproved. This significant deficiency must be corrected within 120 days of notification or have a corrective action plan approved by DDW. C 189 Pump Type (Centrifugal, Hand pump, Jet, Positive Displacement, Screw, Submersible, Vertical turbine) Centrifugal 190 If the pump station is used to pressurize the distribution system, does it have at least two functioning pumping units? ... if yes, answer the following question(s) SIG | 25pts | PU | PS18 | R309-540-5(4)(b) | Rule states inline booster pumps, withdrawing water directly from distribution lines without storage and feeding water directly into distribution lines, shall have at least two pumping units. This significant deficiency must be corrected within 120 days of notification or have a corrective action plan approved by DDW. NA (Notes: to tank) 191 Pump station building and equipment are protected from flooding. MIN | 15pts | PU | PS13 | R309-540-5(1)(a)(ii), R309-540-5(2)(a)(iii) | Pump station access shall be 6" above surrounding ground and located at least 3’ above 100-year flood elevation or highest recorded flood elevation; station is accessible at all times unless it can be taken out of service when inaccessible. C DEQ | Drinking Water Run Date: 09/23/2025 10:35:57 | Rating: Approved UTAH27051 ZION CANYON WATER SYSTEM page 32 of 55 PF003 - BIRCH EMERGENCY PUMP -- Pump Stations - Active 192 There are no unprotected cross-connections in the pump station. SIG | 50pts | PU | PS15 | R309-105-12(1) | Cross connections are not allowed unless controlled by an approved and properly operating backflow prevention assembly or device. This significant deficiency must be corrected within 120 days of notification or have a corrective action plan approved by DDW. C 193 Hose connections are equipped with a backflow prevention device MIN | 15pts | SM | M007 | R309-105-12(2) | Rule requires each public water system to have a cross connection control program that includes test history and documentation of on-going enforcement activities. C 194 Discharge piping has a pressure gauge. MIN | 15pts | PU | PS03 | R309-540-5 (6)(c)(i) | Rule requires that a standard pressure gauge be installed on the pump discharge line. C 195 Does the pumping facility have an air relief valve located on the discharge piping? ... if yes, answer the following question(s) Y 195A End of air relief piping downturned SIG | 25pts | PU | PS12 | R309-550-6(6)(b), R309-540-6(2) | The open end of the air relief vent pipe from automatic valves shall be provided with a downward elbow. This significant deficiency must be corrected within 120 days of notification or have a corrective action plan approved by DDW. C 195B End of air relief piping covered with #14 mesh screen SIG | 25pts | PU | PS10 | R309-550-6(6)(b), R309-540-6(2) | The open end of the air relief vent pipe from automatic valves shall be provided with a #14 mesh, non- corrodible screen. This significant deficiency must be corrected within 120 days of notification or have a corrective action plan approved by DDW. C 195C End of air relief piping terminates at least 6 inches above floor SIG | 25pts | PU | PS11 | R309-550-6(6)(b), R309-540-6(2) | Rule requires that an air release valve discharge line terminate a minimum of 6 inches above the floor. C 196 Pump station properly secured MIN | 15pts | PU | PS33 | R309-540-5(1)(a)(v) | The pump station is protected to prevent vandalism and entrance by animals or unauthorized persons. C 197 Is this facility Active or Inactive?A 198 There are no undocumented drinking water facilities (i.e. tanks, pump stations, treatment facilities, etc.) or recent modifications that have not gone through DDW review SIG | 50pts | SM | G001 | R309-100-5(2), R309-500-6, R309-500-9, R309-500-9(2) and (3) | Rule requires complete plans & specification for all public drinking water projects to be approved in writing by the Director. Any facility found that has not started DDW review shall be considered unapproved. This significant deficiency must be corrected within 120 days of notification or have a corrective action plan approved by DDW. C 199 Pump Type (Centrifugal, Hand pump, Jet, Positive Displacement, Screw, Submersible, Vertical turbine) Centrifugal DEQ | Drinking Water Run Date: 09/23/2025 10:35:57 | Rating: Approved UTAH27051 ZION CANYON WATER SYSTEM page 33 of 55 TP001 - BIRCH CREEK-WATERCRESS TREATMENT PLANT -- Treatment General - Active 200 If the pump station is used to pressurize the distribution system, does it have at least two functioning pumping units? ... if yes, answer the following question(s) SIG | 25pts | PU | PS18 | R309-540-5(4)(b) | Rule states inline booster pumps, withdrawing water directly from distribution lines without storage and feeding water directly into distribution lines, shall have at least two pumping units. This significant deficiency must be corrected within 120 days of notification or have a corrective action plan approved by DDW. NA (Notes: to tank at the lodge in the event of emergency in that pressure zone) 201 Pump station building and equipment are protected from flooding. MIN | 15pts | PU | PS13 | R309-540-5(1)(a)(ii), R309-540-5(2)(a)(iii) | Pump station access shall be 6" above surrounding ground and located at least 3’ above 100-year flood elevation or highest recorded flood elevation; station is accessible at all times unless it can be taken out of service when inaccessible. C 202 There are no unprotected cross-connections in the pump station. SIG | 50pts | PU | PS15 | R309-105-12(1) | Cross connections are not allowed unless controlled by an approved and properly operating backflow prevention assembly or device. This significant deficiency must be corrected within 120 days of notification or have a corrective action plan approved by DDW. C 203 Hose connections are equipped with a backflow prevention device MIN | 15pts | SM | M007 | R309-105-12(2) | Rule requires each public water system to have a cross connection control program that includes test history and documentation of on-going enforcement activities. C 204 Discharge piping has a pressure gauge. MIN | 15pts | PU | PS03 | R309-540-5 (6)(c)(i) | Rule requires that a standard pressure gauge be installed on the pump discharge line. C 205 Does the pumping facility have an air relief valve located on the discharge piping? ... if yes, answer the following question(s) Y 205A End of air relief piping downturned SIG | 25pts | PU | PS12 | R309-550-6(6)(b), R309-540-6(2) | The open end of the air relief vent pipe from automatic valves shall be provided with a downward elbow. This significant deficiency must be corrected within 120 days of notification or have a corrective action plan approved by DDW. C 205B End of air relief piping covered with #14 mesh screen SIG | 25pts | PU | PS10 | R309-550-6(6)(b), R309-540-6(2) | The open end of the air relief vent pipe from automatic valves shall be provided with a #14 mesh, non- corrodible screen. This significant deficiency must be corrected within 120 days of notification or have a corrective action plan approved by DDW. C 205C End of air relief piping terminates at least 6 inches above floor SIG | 25pts | PU | PS11 | R309-550-6(6)(b), R309-540-6(2) | Rule requires that an air release valve discharge line terminate a minimum of 6 inches above the floor. C 206 Pump station properly secured MIN | 15pts | PU | PS33 | R309-540-5(1)(a)(v) | The pump station is protected to prevent vandalism and entrance by animals or unauthorized persons. C DEQ | Drinking Water Run Date: 09/23/2025 10:35:57 | Rating: Approved UTAH27051 ZION CANYON WATER SYSTEM page 34 of 55 207 Is this facility Active or Inactive?A 208 There are no undocumented drinking water facilities (i.e. tanks, pump stations, treatment facilities, etc.) or recent modifications that have not gone through DDW review SIG | 50pts | SM | G001 | R309-100-5(2), R309-500-6, R309-500-9, R309-500-9(2) and (3) | Rule requires complete plans & specification for all public drinking water projects to be approved in writing by the Director. Any facility found that has not started DDW review shall be considered unapproved. This significant deficiency must be corrected within 120 days of notification or have a corrective action plan approved by DDW. C 209 Operating Period (Start Date)01/01 210 Operating Period (Ending Date)12/31 211 What is the objective of the treatment process and how do you know it is working? (e.g., surface water treatment, disinfection, arsenic removal, TDS removal etc.) cartridge filters and disinfection (Notes: originally designed for SWT but replaced LT2 filters with Harmsco HC/17-1 filters (3 in series, two trains)) 212 Walk me through the different process steps of your treatment plant. What is the purpose of each step? Show me how you determine you are meeting your Treatment Requirements. filtration plus disinfection 213 What Chemicals are used? Why?sodium hypochlorite 214 How is the chemical dose adjusted with flow and water quality? Prompts: What flow rate is used for the adjustment (influent, effluent, CFE)? What water quality parameters would make you change dose rate? filter effluent 215 Does influent flow rate vary?Y 215A If yes, why does influent flow rate vary?flows from spring 215B If yes, does chemical dose rate adjust to remain compliant at different flow conditions?yes 216 Process control testing is consistent with the specific treatment process MIN | 15pts | TR | TGR9 | R309-105-7, 8 & 18, R309-100 through 605 | Trigger for regulatory followup to address concerns. C 217 There is a means to accurately measure the quantities of chemicals used. SIG | 25pts | TR | TD99 | R309-525-11(7)(d)(iv) | Provisions shall be made for measuring the quantities of chemicals used. This significant deficiency must be corrected within 120 days of notification or have a corrective action plan approved by DDW. C 218 Treatment plant properly secured to protect the quality of the treated water, R309-520- 7(2)(f) SIG | 25pts | SM | A050 | R309-400-11 | If the water system does not comply with the directive, the Director may assess 25 to 200 points to the water system. Points shall be assessed based upon the severity of the non-compliance, the threat to public health and the underlying basis for the original directive. C 219 Are liquid chemicals used? ... if yes, answer the following question(s)Y DEQ | Drinking Water Run Date: 09/23/2025 10:35:57 | Rating: Approved UTAH27051 ZION CANYON WATER SYSTEM page 35 of 55 219A Proper cross-connection control is provided on the service water lines that feed the solution tanks SIG | 50pts | TR | TG53 | R309-525-11(9)(b)(i) | Rule requires cross connection control to be provided to assure that the make-up waterlines discharging to solution tanks shall be properly protected from backflow as required by the Utah Plumbing Code. This significant deficiency must be corrected within 120 days of notification or have a compliance action plan approved by DDW. C 219B There are adequate spill containment provisions for acid and caustic liquids. MIN | 15pts | TR | TG59 | R309-525-11(6)(a)(iv)(B), R309-525-11(8)(b)(viii) | Rule requires liquid chemical storage tanks to have an overflow and receiving basin or drain capable of receiving accidental spills or overflows, and meeting all the requirements of R309-525-23. C 219C If there is a day tank, the bulk tank and day tanks have separate screened vents. MIN | 15pts | TR | TG60 | R309-525-11(8)(b)(vi) | Rule requires acid storage tanks to be vented to the outside atmosphere, but not through vents in common with day tanks. NA (Notes: one tank) 219D Solution tanks and tank refilling line entry points are properly labeled to identify the chemicals or liquids MIN | 15pts | TR | TG03 | R309-525-11(8)(c)(vii) | Rule requires tanks to be properly labeled to designate the chemical contained. C 219E No direct connections exist between a sewer and drain or overflow from the feeder, solution chamber, or tank. SIG | 50pts | DS | M020 | R309-105-12(1) | Rule states that a water supplier shall not allow a connection to his system which may jeopardize its quality and integrity. Cross connections are not allowed unless controlled by an approved and properly operating backflow prevention assembly. This significant deficiency must be corrected within 120 days of notification or have a corrective action plan approved by DDW. C 219F Chemical storage tank access opening properly covered? MIN | 15pts | TR | TGR9 | R309-105-7, 8 & 18, R309-100 through 605 | Trigger for regulatory followup to address concerns. C 220 Treatment chemicals meet ANSI/NSF 60. SIG | 50pts | TR | TD90 | R309-525-11(5), R309-520-6(2) | All chemicals added to drinking water, including chlorine, chloramines and chemicals used to generate hypochlorite solutions and chlorine dioxide, shall be certified as complying with ANSI/NSF Standard 60. This significant deficiency must be corrected within 120 days of notification or have a corrective action plan approved by DDW. C 221 Are all chemical feeders properly verified for accuracy? SIG | 25pts | TR | TG21 | R309-525-11(7)(a)(i) | Feeders shall supply, at all times, the necessary amounts of chemicals at an accurately controlled rate, throughout the anticipated range of feed. This significant deficiency must be corrected within 120 days of notification or have a corrective action plan approved by DDW. C DEQ | Drinking Water Run Date: 09/23/2025 10:35:57 | Rating: Approved UTAH27051 ZION CANYON WATER SYSTEM page 36 of 55 TP003 - LOWER GROTTO TREATMENT PLANT -- Treatment General - Active 222 Spare parts are available for all chemical feeders MIN | 15pts | TR | TX09 | R309-525-11(7)(b)(i) and (ii) | R308-525-11(8)(b)(i) states that a means consistent with the nature of the chemical solution shall be provided in a solution tank to maintain a uniform strength of solution. Continuous agitation shall be provided to maintain slurries in suspension. 2 dem C 223 Incompatible chemicals stored separately SIG | 25pts | TR | TG19 | R309-525-11(7)(a)(iv) | Rule prohibits chemicals that are incompatible from being fed, stored, or handled together. This significant deficiency must be corrected within 120 days of notification or have a corrective action plan approved by DDW. C 224 Daily operating records reflect chemical dosages and total quantities used SIG | 25pts | MR | TG20 | R309-105-14(3)(a) | Rule requires all water system using chemical addition or specialized equipment for the treatment of drinking water to regularly complete operational reports. This significant deficiency must be corrected within 120 days of notification or have a corrective action plan approved by DDW. C 225 Raw water compliance samples are collected before any treatment. R309-215-4(4) SIG | 25pts | TR | T006 | R309-525-15(10)(a)(i) | R309-525-15(10)(a)(i) Y 225A If yes, was location shown?yes 226 Where are finished water quality monitoring samples collected?after treatment 227 Does water system have a DEQ/DWQ (UPDES permit) discharge permit for the proper disposal of treatment plant waste to land or water? MIN | 15pts | SM | TGR3 | R309-105-6 | R309-105-6 NA (Notes: no backwash) 228 Which parameters are watched when running treatment plant?flow, turbidity, residual, pressure 229 What type of alarm system is used?SCADA 230 Does treatment plant have a SCADA system?Y 230A Can operators respond to all alarms in a normal day, or do they have to silence legitimate alarms? Y 230B How are alarm set points adjusted and how are changes recorded?yes, manually 231 Proper lab equipment on site to support required operations & maintenance of the plant? SIG | 25pts | TR | T019 | R309-525-17(1) | Sufficient laboratory equipment shall be provided to assure proper operation and monitoring of the water plant. This significant deficiency must be corrected within 120 days of notification or have a corrective action plan approved by DDW. C 232 Is this facility Active or Inactive?A DEQ | Drinking Water Run Date: 09/23/2025 10:35:57 | Rating: Approved UTAH27051 ZION CANYON WATER SYSTEM page 37 of 55 233 There are no undocumented drinking water facilities (i.e. tanks, pump stations, treatment facilities, etc.) or recent modifications that have not gone through DDW review SIG | 50pts | SM | G001 | R309-100-5(2), R309-500-6, R309-500-9, R309-500-9(2) and (3) | Rule requires complete plans & specification for all public drinking water projects to be approved in writing by the Director. Any facility found that has not started DDW review shall be considered unapproved. This significant deficiency must be corrected within 120 days of notification or have a corrective action plan approved by DDW. C 234 Operating Period (Start Date)01/01 235 Operating Period (Ending Date)12/31 236 What is the objective of the treatment process and how do you know it is working? (e.g., surface water treatment, disinfection, arsenic removal, TDS removal etc.) cartidge filtration plus disinfection (Notes: originally designed for SWT but replaced LT2 filters with Harmsco HC/17-1 filters (3 in series, two trains)) 237 Walk me through the different process steps of your treatment plant. What is the purpose of each step? Show me how you determine you are meeting your Treatment Requirements. cartidge filtration plus disinfection 238 What Chemicals are used? Why?sodium hypochlorite 239 How is the chemical dose adjusted with flow and water quality? Prompts: What flow rate is used for the adjustment (influent, effluent, CFE)? What water quality parameters would make you change dose rate? effluent from filters 240 Does influent flow rate vary?Y 240A If yes, why does influent flow rate vary?spring flows 240B If yes, does chemical dose rate adjust to remain compliant at different flow conditions?C 241 Process control testing is consistent with the specific treatment process MIN | 15pts | TR | TGR9 | R309-105-7, 8 & 18, R309-100 through 605 | Trigger for regulatory followup to address concerns. C 242 There is a means to accurately measure the quantities of chemicals used. SIG | 25pts | TR | TD99 | R309-525-11(7)(d)(iv) | Provisions shall be made for measuring the quantities of chemicals used. This significant deficiency must be corrected within 120 days of notification or have a corrective action plan approved by DDW. C 243 Treatment plant properly secured to protect the quality of the treated water, R309-520- 7(2)(f) SIG | 25pts | SM | A050 | R309-400-11 | If the water system does not comply with the directive, the Director may assess 25 to 200 points to the water system. Points shall be assessed based upon the severity of the non-compliance, the threat to public health and the underlying basis for the original directive. C 244 Are liquid chemicals used? ... if yes, answer the following question(s)Y DEQ | Drinking Water Run Date: 09/23/2025 10:35:57 | Rating: Approved UTAH27051 ZION CANYON WATER SYSTEM page 38 of 55 244A Proper cross-connection control is provided on the service water lines that feed the solution tanks SIG | 50pts | TR | TG53 | R309-525-11(9)(b)(i) | Rule requires cross connection control to be provided to assure that the make-up waterlines discharging to solution tanks shall be properly protected from backflow as required by the Utah Plumbing Code. This significant deficiency must be corrected within 120 days of notification or have a compliance action plan approved by DDW. C 244B There are adequate spill containment provisions for acid and caustic liquids. MIN | 15pts | TR | TG59 | R309-525-11(6)(a)(iv)(B), R309-525-11(8)(b)(viii) | Rule requires liquid chemical storage tanks to have an overflow and receiving basin or drain capable of receiving accidental spills or overflows, and meeting all the requirements of R309-525-23. C 244C If there is a day tank, the bulk tank and day tanks have separate screened vents. MIN | 15pts | TR | TG60 | R309-525-11(8)(b)(vi) | Rule requires acid storage tanks to be vented to the outside atmosphere, but not through vents in common with day tanks. NA (Notes: one tank) 244D Solution tanks and tank refilling line entry points are properly labeled to identify the chemicals or liquids MIN | 15pts | TR | TG03 | R309-525-11(8)(c)(vii) | Rule requires tanks to be properly labeled to designate the chemical contained. C 244E No direct connections exist between a sewer and drain or overflow from the feeder, solution chamber, or tank. SIG | 50pts | DS | M020 | R309-105-12(1) | Rule states that a water supplier shall not allow a connection to his system which may jeopardize its quality and integrity. Cross connections are not allowed unless controlled by an approved and properly operating backflow prevention assembly. This significant deficiency must be corrected within 120 days of notification or have a corrective action plan approved by DDW. C 244F Chemical storage tank access opening properly covered? MIN | 15pts | TR | TGR9 | R309-105-7, 8 & 18, R309-100 through 605 | Trigger for regulatory followup to address concerns. C 245 Treatment chemicals meet ANSI/NSF 60. SIG | 50pts | TR | TD90 | R309-525-11(5), R309-520-6(2) | All chemicals added to drinking water, including chlorine, chloramines and chemicals used to generate hypochlorite solutions and chlorine dioxide, shall be certified as complying with ANSI/NSF Standard 60. This significant deficiency must be corrected within 120 days of notification or have a corrective action plan approved by DDW. C 246 Are all chemical feeders properly verified for accuracy? SIG | 25pts | TR | TG21 | R309-525-11(7)(a)(i) | Feeders shall supply, at all times, the necessary amounts of chemicals at an accurately controlled rate, throughout the anticipated range of feed. This significant deficiency must be corrected within 120 days of notification or have a corrective action plan approved by DDW. C DEQ | Drinking Water Run Date: 09/23/2025 10:35:57 | Rating: Approved UTAH27051 ZION CANYON WATER SYSTEM page 39 of 55 TP004 - UPPER GROTTO TREATMENT PLANT -- Treatment General - Active 247 Spare parts are available for all chemical feeders MIN | 15pts | TR | TX09 | R309-525-11(7)(b)(i) and (ii) | R308-525-11(8)(b)(i) states that a means consistent with the nature of the chemical solution shall be provided in a solution tank to maintain a uniform strength of solution. Continuous agitation shall be provided to maintain slurries in suspension. 2 dem C 248 Incompatible chemicals stored separately SIG | 25pts | TR | TG19 | R309-525-11(7)(a)(iv) | Rule prohibits chemicals that are incompatible from being fed, stored, or handled together. This significant deficiency must be corrected within 120 days of notification or have a corrective action plan approved by DDW. C 249 Daily operating records reflect chemical dosages and total quantities used SIG | 25pts | MR | TG20 | R309-105-14(3)(a) | Rule requires all water system using chemical addition or specialized equipment for the treatment of drinking water to regularly complete operational reports. This significant deficiency must be corrected within 120 days of notification or have a corrective action plan approved by DDW. C 250 Raw water compliance samples are collected before any treatment. R309-215-4(4) SIG | 25pts | TR | T006 | R309-525-15(10)(a)(i) | R309-525-15(10)(a)(i) Y 250A If yes, was location shown?yes 251 Where are finished water quality monitoring samples collected?after treatment 252 Does water system have a DEQ/DWQ (UPDES permit) discharge permit for the proper disposal of treatment plant waste to land or water? MIN | 15pts | SM | TGR3 | R309-105-6 | R309-105-6 NA (Notes: no backwash) 253 Which parameters are watched when running treatment plant?flow, turbidity, pressure, residuals 254 What type of alarm system is used?scada 255 Does treatment plant have a SCADA system?Y 255A Can operators respond to all alarms in a normal day, or do they have to silence legitimate alarms? yes 255B How are alarm set points adjusted and how are changes recorded?manual 256 Proper lab equipment on site to support required operations & maintenance of the plant? SIG | 25pts | TR | T019 | R309-525-17(1) | Sufficient laboratory equipment shall be provided to assure proper operation and monitoring of the water plant. This significant deficiency must be corrected within 120 days of notification or have a corrective action plan approved by DDW. C 257 Is this facility Active or Inactive?A DEQ | Drinking Water Run Date: 09/23/2025 10:35:57 | Rating: Approved UTAH27051 ZION CANYON WATER SYSTEM page 40 of 55 258 There are no undocumented drinking water facilities (i.e. tanks, pump stations, treatment facilities, etc.) or recent modifications that have not gone through DDW review SIG | 50pts | SM | G001 | R309-100-5(2), R309-500-6, R309-500-9, R309-500-9(2) and (3) | Rule requires complete plans & specification for all public drinking water projects to be approved in writing by the Director. Any facility found that has not started DDW review shall be considered unapproved. This significant deficiency must be corrected within 120 days of notification or have a corrective action plan approved by DDW. C 259 Operating Period (Start Date)01/01 260 Operating Period (Ending Date)12/31 261 What is the objective of the treatment process and how do you know it is working? (e.g., surface water treatment, disinfection, arsenic removal, TDS removal etc.) cartridge filters and disinfection 262 Walk me through the different process steps of your treatment plant. What is the purpose of each step? Show me how you determine you are meeting your Treatment Requirements. cartridge filters and disinfection 263 What Chemicals are used? Why?sodium hypochlorite 264 How is the chemical dose adjusted with flow and water quality? Prompts: What flow rate is used for the adjustment (influent, effluent, CFE)? What water quality parameters would make you change dose rate? filter effluent 265 Does influent flow rate vary?Y 265A If yes, why does influent flow rate vary?spring flows 265B If yes, does chemical dose rate adjust to remain compliant at different flow conditions?yes 266 Process control testing is consistent with the specific treatment process MIN | 15pts | TR | TGR9 | R309-105-7, 8 & 18, R309-100 through 605 | Trigger for regulatory followup to address concerns. C 267 There is a means to accurately measure the quantities of chemicals used. SIG | 25pts | TR | TD99 | R309-525-11(7)(d)(iv) | Provisions shall be made for measuring the quantities of chemicals used. This significant deficiency must be corrected within 120 days of notification or have a corrective action plan approved by DDW. C 268 Treatment plant properly secured to protect the quality of the treated water, R309-520- 7(2)(f) SIG | 25pts | SM | A050 | R309-400-11 | If the water system does not comply with the directive, the Director may assess 25 to 200 points to the water system. Points shall be assessed based upon the severity of the non-compliance, the threat to public health and the underlying basis for the original directive. C 269 Are liquid chemicals used? ... if yes, answer the following question(s)Y 269A Proper cross-connection control is provided on the service water lines that feed the solution tanks SIG | 50pts | TR | TG53 | R309-525-11(9)(b)(i) | Rule requires cross connection control to be provided to assure that the make-up waterlines discharging to solution tanks shall be properly protected from backflow as required by the Utah Plumbing Code. This significant deficiency must be corrected within 120 days of notification or have a compliance action plan approved by DDW. C DEQ | Drinking Water Run Date: 09/23/2025 10:35:57 | Rating: Approved UTAH27051 ZION CANYON WATER SYSTEM page 41 of 55 269B There are adequate spill containment provisions for acid and caustic liquids. MIN | 15pts | TR | TG59 | R309-525-11(6)(a)(iv)(B), R309-525-11(8)(b)(viii) | Rule requires liquid chemical storage tanks to have an overflow and receiving basin or drain capable of receiving accidental spills or overflows, and meeting all the requirements of R309-525-23. C 269C If there is a day tank, the bulk tank and day tanks have separate screened vents. MIN | 15pts | TR | TG60 | R309-525-11(8)(b)(vi) | Rule requires acid storage tanks to be vented to the outside atmosphere, but not through vents in common with day tanks. NA (Notes: one tank) 269D Solution tanks and tank refilling line entry points are properly labeled to identify the chemicals or liquids MIN | 15pts | TR | TG03 | R309-525-11(8)(c)(vii) | Rule requires tanks to be properly labeled to designate the chemical contained. C 269E No direct connections exist between a sewer and drain or overflow from the feeder, solution chamber, or tank. SIG | 50pts | DS | M020 | R309-105-12(1) | Rule states that a water supplier shall not allow a connection to his system which may jeopardize its quality and integrity. Cross connections are not allowed unless controlled by an approved and properly operating backflow prevention assembly. This significant deficiency must be corrected within 120 days of notification or have a corrective action plan approved by DDW. C 269F Chemical storage tank access opening properly covered? MIN | 15pts | TR | TGR9 | R309-105-7, 8 & 18, R309-100 through 605 | Trigger for regulatory followup to address concerns. C 270 Treatment chemicals meet ANSI/NSF 60. SIG | 50pts | TR | TD90 | R309-525-11(5), R309-520-6(2) | All chemicals added to drinking water, including chlorine, chloramines and chemicals used to generate hypochlorite solutions and chlorine dioxide, shall be certified as complying with ANSI/NSF Standard 60. This significant deficiency must be corrected within 120 days of notification or have a corrective action plan approved by DDW. C 271 Are all chemical feeders properly verified for accuracy? SIG | 25pts | TR | TG21 | R309-525-11(7)(a)(i) | Feeders shall supply, at all times, the necessary amounts of chemicals at an accurately controlled rate, throughout the anticipated range of feed. This significant deficiency must be corrected within 120 days of notification or have a corrective action plan approved by DDW. C 272 Spare parts are available for all chemical feeders MIN | 15pts | TR | TX09 | R309-525-11(7)(b)(i) and (ii) | R308-525-11(8)(b)(i) states that a means consistent with the nature of the chemical solution shall be provided in a solution tank to maintain a uniform strength of solution. Continuous agitation shall be provided to maintain slurries in suspension. 2 dem C 273 Incompatible chemicals stored separately SIG | 25pts | TR | TG19 | R309-525-11(7)(a)(iv) | Rule prohibits chemicals that are incompatible from being fed, stored, or handled together. This significant deficiency must be corrected within 120 days of notification or have a corrective action plan approved by DDW. C DEQ | Drinking Water Run Date: 09/23/2025 10:35:57 | Rating: Approved UTAH27051 ZION CANYON WATER SYSTEM page 42 of 55 TP001 - BIRCH CREEK-WATERCRESS TREATMENT PLANT -- Treatment General TP003 - LOWER GROTTO TREATMENT PLANT -- Treatment General 274 Daily operating records reflect chemical dosages and total quantities used SIG | 25pts | MR | TG20 | R309-105-14(3)(a) | Rule requires all water system using chemical addition or specialized equipment for the treatment of drinking water to regularly complete operational reports. This significant deficiency must be corrected within 120 days of notification or have a corrective action plan approved by DDW. C 275 Raw water compliance samples are collected before any treatment. R309-215-4(4) SIG | 25pts | TR | T006 | R309-525-15(10)(a)(i) | R309-525-15(10)(a)(i) Y 275A If yes, was location shown?yes 276 Where are finished water quality monitoring samples collected?after treatment 277 Does water system have a DEQ/DWQ (UPDES permit) discharge permit for the proper disposal of treatment plant waste to land or water? MIN | 15pts | SM | TGR3 | R309-105-6 | R309-105-6 NA (Notes: no backwash) 278 Which parameters are watched when running treatment plant?flow, turbidity, residual, pressure 279 What type of alarm system is used?scada 280 Does treatment plant have a SCADA system?Y 280A Can operators respond to all alarms in a normal day, or do they have to silence legitimate alarms? yes 280B How are alarm set points adjusted and how are changes recorded?manual 281 Proper lab equipment on site to support required operations & maintenance of the plant? SIG | 25pts | TR | T019 | R309-525-17(1) | Sufficient laboratory equipment shall be provided to assure proper operation and monitoring of the water plant. This significant deficiency must be corrected within 120 days of notification or have a corrective action plan approved by DDW. C 282 Is system required to provide primary disinfection of ground water source?N 283 Is free chlorine residual monitoring conducted using grab samples or online chlorine analyzer? ON 284 Chlorine residual measured at POE is always above minimum requirement (0.2 mg/L)? MIN | 15pts | TR | TGR9 | R309-105-7, 8 & 18, R309-100 through 605 | Trigger for regulatory followup to address concerns. C 285 Is online chlorine residual analyzer equipment checked for accuracy quarterly? R309- 525-25(4) MIN | 15pts | TR | TD75 | Standard Method 334.0 Determination of Residual Chlorine in Drinking Water Using an Online Chlorine Analyzer. [EPA 815-B-09-013 September 2009 11.1.1.2 Page 13] | Spare parts shall be provided and maintained for all chlorinators to repair parts subject to wear and breakage. C 286 Is system required to provide primary disinfection of ground water source?N 287 Is free chlorine residual monitoring conducted using grab samples or online chlorine analyzer? ON DEQ | Drinking Water Run Date: 09/23/2025 10:35:57 | Rating: Approved UTAH27051 ZION CANYON WATER SYSTEM page 43 of 55 TP004 - UPPER GROTTO TREATMENT PLANT -- Treatment General TP001 - BIRCH CREEK-WATERCRESS TREATMENT PLANT -- Treatment - Chlorination General - Active 288 Chlorine residual measured at POE is always above minimum requirement (0.2 mg/L)? MIN | 15pts | TR | TGR9 | R309-105-7, 8 & 18, R309-100 through 605 | Trigger for regulatory followup to address concerns. C 289 Is online chlorine residual analyzer equipment checked for accuracy quarterly? R309- 525-25(4) MIN | 15pts | TR | TD75 | Standard Method 334.0 Determination of Residual Chlorine in Drinking Water Using an Online Chlorine Analyzer. [EPA 815-B-09-013 September 2009 11.1.1.2 Page 13] | Spare parts shall be provided and maintained for all chlorinators to repair parts subject to wear and breakage. C 290 Is system required to provide primary disinfection of ground water source?N 291 Is free chlorine residual monitoring conducted using grab samples or online chlorine analyzer? ON 292 Chlorine residual measured at POE is always above minimum requirement (0.2 mg/L)? MIN | 15pts | TR | TGR9 | R309-105-7, 8 & 18, R309-100 through 605 | Trigger for regulatory followup to address concerns. C 293 Is online chlorine residual analyzer equipment checked for accuracy quarterly? R309- 525-25(4) MIN | 15pts | TR | TD75 | Standard Method 334.0 Determination of Residual Chlorine in Drinking Water Using an Online Chlorine Analyzer. [EPA 815-B-09-013 September 2009 11.1.1.2 Page 13] | Spare parts shall be provided and maintained for all chlorinators to repair parts subject to wear and breakage. C 294 Is this facility Active or Inactive?A 295 Is system required to provide primary disinfection? Prompt - If system knows they are required to chlorinate based on water quality issues and/or knows they are required to provide a minimum CT then follow-up by DDW is needed. N (Notes: secondary RTD) 295A If yes, no new connections have been added prior to approved first connection that would change the disinfection CT calculation. SIG | 50pts | TR | TD26 | R309-505-7(2), R309-520-4 and 6(4) | Point of application of disinfectants shall be at a location that will achieve the required disinfection CT prior to the first service connection. This significant deficiency must be corrected within 120 days of notification or have a corrective action plan approved by DDW. C 296 When chlorination is required, disinfection has operated uninterrupted during the past year while supplying drinking water. SIG | 50pts | TR | TD25 | R309-520-6 | Rule requires continuous disinfection of groundwater sources that do not consistently meet bacteriological quality standards, all surface water sources, and groundwater sources under the direct influence of surface water. This significant deficiency must be corrected within 120 days of notification or have a corrective action plan approved by DDW. C DEQ | Drinking Water Run Date: 09/23/2025 10:35:57 | Rating: Approved UTAH27051 ZION CANYON WATER SYSTEM page 44 of 55 297 Chlorine (gas & hypochlorite solution, tablets, granules, ) and chemicals used to generate chlorine solutions and chlorine dioxide meet ANSI/NSF 60. SIG | 50pts | TR | TD90 | R309-525-11(5), R309-520-6(2) | All chemicals added to drinking water, including chlorine, chloramines and chemicals used to generate hypochlorite solutions and chlorine dioxide, shall be certified as complying with ANSI/NSF Standard 60. This significant deficiency must be corrected within 120 days of notification or have a corrective action plan approved by DDW. C 298 If chemical dilution or dissolution is needed, cross-connection control is provided on water lines feeding solution tanks. SIG | 50pts | TR | TX07 | R309-525-11(2)(c), R309-525-11(9)(b)(i) to (iv) | Cross connection control shall be provided on make-up water lines feeding solution tanks. This significant deficiency must be corrected within 120 days of notification or have a corrective action plan approved by DDW. NA (Notes: no dilution) 299 Water flow rate is measured to control chemical feed? SIG | 25pts | TR | TD79 | R309-525-11(7)(d)(ii) and (iii), R309-525-11(7)(a)(i) | Chemical feed rates shall be proportional to flows and a means to measure water flow rate shall be provided. This significant deficiency must be corrected within 120 days of notification or have a corrective action plan approved by DDW. C 300 Solution tanks and tank refilling line entry points are properly labeled to identify the chemicals MIN | 15pts | TR | TG03 | R309-525-11(8)(c)(vii) | Rule requires tanks to be properly labeled to designate the chemical contained. C 301 Free chlorine residual test equipment on-site or available? MIN | 15pts | TR | TD78 | R309-520-7(1)(j) | Rule requires chlorine residual test equipment available capable of measuring residuals to the nearest 0.1 mg/l in the range below 0.5 mg/l, to the nearest 0.3 mg/l between 0.5 mg/l and 1.0 mg/l and to the nearest 0.5 mg/l above 1.0 mg/l. C 302 Spare parts are available to replace parts subject to wear and breakage MIN | 15pts | TR | TD75 | Standard Method 334.0 Determination of Residual Chlorine in Drinking Water Using an Online Chlorine Analyzer. [EPA 815-B-09-013 September 2009 11.1.1.2 Page 13] | Spare parts shall be provided and maintained for all chlorinators to repair parts subject to wear and breakage. C 303 Is chlorine chemical dose rate adjusted due to different water demand flow rates and/or changing water quality? Y 303A If yes, which water flow rate is used? e.g. influent flow, effluent flow, filter flow.effluent 304 Is there a designated chlorine Point of Entry (POE) sample location? MIN | 15pts | TR | TGR9 | R309-105-7, 8 & 18, R309-100 through 605 | Trigger for regulatory followup to address concerns. C 305 POE is before first connection/customer? SIG | 25pts | TR | T028 | R309-215 | R309-215 & R309-520-6(4)(d) C 306 Chlorine residual records are maintained and available... if yes answer following SIG | 25pts | TR | T028 | R309-215 | R309-215 & R309-520-6(4)(d) Y DEQ | Drinking Water Run Date: 09/23/2025 10:35:57 | Rating: Approved UTAH27051 ZION CANYON WATER SYSTEM page 45 of 55 TP003 - LOWER GROTTO TREATMENT PLANT -- Treatment - Chlorination General - Active 306A System is sampling distribution residuals throughout entire distribution system MIN | 15pts | TR | TGR9 | R309-105-7, 8 & 18, R309-100 through 605 | Trigger for regulatory followup to address concerns. C 306B Distribution chlorine residuals meet minimum concentration requirement SIG | 25pts | TR | T028 | R309-215 | R309-215 & R309-520-6(4)(d) C 306C "What is the maximum free chlorine residual measure? This value never exceeds 4.0 mg/L? " MIN | 15pts | TR | TGR9 | R309-105-7, 8 & 18, R309-100 through 605 | Trigger for regulatory followup to address concerns. C 306D System collects at least three distribution chlorine residual samples a week? MIN | 15pts | TR | TGR9 | R309-105-7, 8 & 18, R309-100 through 605 | Trigger for regulatory followup to address concerns. C 306E System is sampling distribution residuals in accordance with monitoring schedule MIN | 15pts | TR | TGR9 | R309-105-7, 8 & 18, R309-100 through 605 | Trigger for regulatory followup to address concerns. C 307 Treatment plant properly secured to protect the quality of the treated water. R309-520- 7(2)(f) SIG | 25pts | SM | A050 | R309-400-11 | If the water system does not comply with the directive, the Director may assess 25 to 200 points to the water system. Points shall be assessed based upon the severity of the non-compliance, the threat to public health and the underlying basis for the original directive. C 308 Daily operating records reflect chemical dosages and total quantities used SIG | 25pts | MR | TG20 | R309-105-14(3)(a) | Rule requires all water system using chemical addition or specialized equipment for the treatment of drinking water to regularly complete operational reports. This significant deficiency must be corrected within 120 days of notification or have a corrective action plan approved by DDW. C 309 Is this facility Active or Inactive?A 310 Is system required to provide primary disinfection? Prompt - If system knows they are required to chlorinate based on water quality issues and/or knows they are required to provide a minimum CT then follow-up by DDW is needed. N (Notes: secondary RTD) 310A If yes, no new connections have been added prior to approved first connection that would change the disinfection CT calculation. SIG | 50pts | TR | TD26 | R309-505-7(2), R309-520-4 and 6(4) | Point of application of disinfectants shall be at a location that will achieve the required disinfection CT prior to the first service connection. This significant deficiency must be corrected within 120 days of notification or have a corrective action plan approved by DDW. C 311 When chlorination is required, disinfection has operated uninterrupted during the past year while supplying drinking water. SIG | 50pts | TR | TD25 | R309-520-6 | Rule requires continuous disinfection of groundwater sources that do not consistently meet bacteriological quality standards, all surface water sources, and groundwater sources under the direct influence of surface water. This significant deficiency must be corrected within 120 days of notification or have a corrective action plan approved by DDW. C DEQ | Drinking Water Run Date: 09/23/2025 10:35:57 | Rating: Approved UTAH27051 ZION CANYON WATER SYSTEM page 46 of 55 312 Chlorine (gas & hypochlorite solution, tablets, granules, ) and chemicals used to generate chlorine solutions and chlorine dioxide meet ANSI/NSF 60. SIG | 50pts | TR | TD90 | R309-525-11(5), R309-520-6(2) | All chemicals added to drinking water, including chlorine, chloramines and chemicals used to generate hypochlorite solutions and chlorine dioxide, shall be certified as complying with ANSI/NSF Standard 60. This significant deficiency must be corrected within 120 days of notification or have a corrective action plan approved by DDW. C 313 If chemical dilution or dissolution is needed, cross-connection control is provided on water lines feeding solution tanks. SIG | 50pts | TR | TX07 | R309-525-11(2)(c), R309-525-11(9)(b)(i) to (iv) | Cross connection control shall be provided on make-up water lines feeding solution tanks. This significant deficiency must be corrected within 120 days of notification or have a corrective action plan approved by DDW. C 314 Water flow rate is measured to control chemical feed? SIG | 25pts | TR | TD79 | R309-525-11(7)(d)(ii) and (iii), R309-525-11(7)(a)(i) | Chemical feed rates shall be proportional to flows and a means to measure water flow rate shall be provided. This significant deficiency must be corrected within 120 days of notification or have a corrective action plan approved by DDW. C 315 Solution tanks and tank refilling line entry points are properly labeled to identify the chemicals MIN | 15pts | TR | TG03 | R309-525-11(8)(c)(vii) | Rule requires tanks to be properly labeled to designate the chemical contained. C 316 Free chlorine residual test equipment on-site or available? MIN | 15pts | TR | TD78 | R309-520-7(1)(j) | Rule requires chlorine residual test equipment available capable of measuring residuals to the nearest 0.1 mg/l in the range below 0.5 mg/l, to the nearest 0.3 mg/l between 0.5 mg/l and 1.0 mg/l and to the nearest 0.5 mg/l above 1.0 mg/l. C 317 Spare parts are available to replace parts subject to wear and breakage MIN | 15pts | TR | TD75 | Standard Method 334.0 Determination of Residual Chlorine in Drinking Water Using an Online Chlorine Analyzer. [EPA 815-B-09-013 September 2009 11.1.1.2 Page 13] | Spare parts shall be provided and maintained for all chlorinators to repair parts subject to wear and breakage. C 318 Is chlorine chemical dose rate adjusted due to different water demand flow rates and/or changing water quality? Y 318A If yes, which water flow rate is used? e.g. influent flow, effluent flow, filter flow.effluent 319 Is there a designated chlorine Point of Entry (POE) sample location? MIN | 15pts | TR | TGR9 | R309-105-7, 8 & 18, R309-100 through 605 | Trigger for regulatory followup to address concerns. C 320 POE is before first connection/customer? SIG | 25pts | TR | T028 | R309-215 | R309-215 & R309-520-6(4)(d) C 321 Chlorine residual records are maintained and available... if yes answer following SIG | 25pts | TR | T028 | R309-215 | R309-215 & R309-520-6(4)(d) Y DEQ | Drinking Water Run Date: 09/23/2025 10:35:57 | Rating: Approved UTAH27051 ZION CANYON WATER SYSTEM page 47 of 55 TP004 - UPPER GROTTO TREATMENT PLANT -- Treatment - Chlorination General - Active 321A System is sampling distribution residuals throughout entire distribution system MIN | 15pts | TR | TGR9 | R309-105-7, 8 & 18, R309-100 through 605 | Trigger for regulatory followup to address concerns. C 321B Distribution chlorine residuals meet minimum concentration requirement SIG | 25pts | TR | T028 | R309-215 | R309-215 & R309-520-6(4)(d) C 321C "What is the maximum free chlorine residual measure? This value never exceeds 4.0 mg/L? " MIN | 15pts | TR | TGR9 | R309-105-7, 8 & 18, R309-100 through 605 | Trigger for regulatory followup to address concerns. C 321D System collects at least three distribution chlorine residual samples a week? MIN | 15pts | TR | TGR9 | R309-105-7, 8 & 18, R309-100 through 605 | Trigger for regulatory followup to address concerns. C 321E System is sampling distribution residuals in accordance with monitoring schedule MIN | 15pts | TR | TGR9 | R309-105-7, 8 & 18, R309-100 through 605 | Trigger for regulatory followup to address concerns. C 322 Treatment plant properly secured to protect the quality of the treated water. R309-520- 7(2)(f) SIG | 25pts | SM | A050 | R309-400-11 | If the water system does not comply with the directive, the Director may assess 25 to 200 points to the water system. Points shall be assessed based upon the severity of the non-compliance, the threat to public health and the underlying basis for the original directive. C 323 Daily operating records reflect chemical dosages and total quantities used SIG | 25pts | MR | TG20 | R309-105-14(3)(a) | Rule requires all water system using chemical addition or specialized equipment for the treatment of drinking water to regularly complete operational reports. This significant deficiency must be corrected within 120 days of notification or have a corrective action plan approved by DDW. C 324 Is this facility Active or Inactive?A 325 Is system required to provide primary disinfection? Prompt - If system knows they are required to chlorinate based on water quality issues and/or knows they are required to provide a minimum CT then follow-up by DDW is needed. N (Notes: secondary RTD) 325A If yes, no new connections have been added prior to approved first connection that would change the disinfection CT calculation. SIG | 50pts | TR | TD26 | R309-505-7(2), R309-520-4 and 6(4) | Point of application of disinfectants shall be at a location that will achieve the required disinfection CT prior to the first service connection. This significant deficiency must be corrected within 120 days of notification or have a corrective action plan approved by DDW. C 326 When chlorination is required, disinfection has operated uninterrupted during the past year while supplying drinking water. SIG | 50pts | TR | TD25 | R309-520-6 | Rule requires continuous disinfection of groundwater sources that do not consistently meet bacteriological quality standards, all surface water sources, and groundwater sources under the direct influence of surface water. This significant deficiency must be corrected within 120 days of notification or have a corrective action plan approved by DDW. C DEQ | Drinking Water Run Date: 09/23/2025 10:35:57 | Rating: Approved UTAH27051 ZION CANYON WATER SYSTEM page 48 of 55 327 Chlorine (gas & hypochlorite solution, tablets, granules, ) and chemicals used to generate chlorine solutions and chlorine dioxide meet ANSI/NSF 60. SIG | 50pts | TR | TD90 | R309-525-11(5), R309-520-6(2) | All chemicals added to drinking water, including chlorine, chloramines and chemicals used to generate hypochlorite solutions and chlorine dioxide, shall be certified as complying with ANSI/NSF Standard 60. This significant deficiency must be corrected within 120 days of notification or have a corrective action plan approved by DDW. C 328 If chemical dilution or dissolution is needed, cross-connection control is provided on water lines feeding solution tanks. SIG | 50pts | TR | TX07 | R309-525-11(2)(c), R309-525-11(9)(b)(i) to (iv) | Cross connection control shall be provided on make-up water lines feeding solution tanks. This significant deficiency must be corrected within 120 days of notification or have a corrective action plan approved by DDW. C 329 Water flow rate is measured to control chemical feed? SIG | 25pts | TR | TD79 | R309-525-11(7)(d)(ii) and (iii), R309-525-11(7)(a)(i) | Chemical feed rates shall be proportional to flows and a means to measure water flow rate shall be provided. This significant deficiency must be corrected within 120 days of notification or have a corrective action plan approved by DDW. C 330 Solution tanks and tank refilling line entry points are properly labeled to identify the chemicals MIN | 15pts | TR | TG03 | R309-525-11(8)(c)(vii) | Rule requires tanks to be properly labeled to designate the chemical contained. C 331 Free chlorine residual test equipment on-site or available? MIN | 15pts | TR | TD78 | R309-520-7(1)(j) | Rule requires chlorine residual test equipment available capable of measuring residuals to the nearest 0.1 mg/l in the range below 0.5 mg/l, to the nearest 0.3 mg/l between 0.5 mg/l and 1.0 mg/l and to the nearest 0.5 mg/l above 1.0 mg/l. C 332 Spare parts are available to replace parts subject to wear and breakage MIN | 15pts | TR | TD75 | Standard Method 334.0 Determination of Residual Chlorine in Drinking Water Using an Online Chlorine Analyzer. [EPA 815-B-09-013 September 2009 11.1.1.2 Page 13] | Spare parts shall be provided and maintained for all chlorinators to repair parts subject to wear and breakage. C 333 Is chlorine chemical dose rate adjusted due to different water demand flow rates and/or changing water quality? Y 333A If yes, which water flow rate is used? e.g. influent flow, effluent flow, filter flow.effluent 334 Is there a designated chlorine Point of Entry (POE) sample location? MIN | 15pts | TR | TGR9 | R309-105-7, 8 & 18, R309-100 through 605 | Trigger for regulatory followup to address concerns. C 335 POE is before first connection/customer? SIG | 25pts | TR | T028 | R309-215 | R309-215 & R309-520-6(4)(d) C 336 Chlorine residual records are maintained and available... if yes answer following SIG | 25pts | TR | T028 | R309-215 | R309-215 & R309-520-6(4)(d) Y DEQ | Drinking Water Run Date: 09/23/2025 10:35:57 | Rating: Approved UTAH27051 ZION CANYON WATER SYSTEM page 49 of 55 TP001 - BIRCH CREEK-WATERCRESS TREATMENT PLANT -- Liquid Hypochlorination - Active 336A System is sampling distribution residuals throughout entire distribution system MIN | 15pts | TR | TGR9 | R309-105-7, 8 & 18, R309-100 through 605 | Trigger for regulatory followup to address concerns. C 336B Distribution chlorine residuals meet minimum concentration requirement SIG | 25pts | TR | T028 | R309-215 | R309-215 & R309-520-6(4)(d) C 336C "What is the maximum free chlorine residual measure? This value never exceeds 4.0 mg/L? " MIN | 15pts | TR | TGR9 | R309-105-7, 8 & 18, R309-100 through 605 | Trigger for regulatory followup to address concerns. C 336D System collects at least three distribution chlorine residual samples a week? MIN | 15pts | TR | TGR9 | R309-105-7, 8 & 18, R309-100 through 605 | Trigger for regulatory followup to address concerns. C 336E System is sampling distribution residuals in accordance with monitoring schedule MIN | 15pts | TR | TGR9 | R309-105-7, 8 & 18, R309-100 through 605 | Trigger for regulatory followup to address concerns. C 337 Treatment plant properly secured to protect the quality of the treated water. R309-520- 7(2)(f) SIG | 25pts | SM | A050 | R309-400-11 | If the water system does not comply with the directive, the Director may assess 25 to 200 points to the water system. Points shall be assessed based upon the severity of the non-compliance, the threat to public health and the underlying basis for the original directive. C 338 Daily operating records reflect chemical dosages and total quantities used SIG | 25pts | MR | TG20 | R309-105-14(3)(a) | Rule requires all water system using chemical addition or specialized equipment for the treatment of drinking water to regularly complete operational reports. This significant deficiency must be corrected within 120 days of notification or have a corrective action plan approved by DDW. C 339 Is this facility Active or Inactive?A 340 Operational means provided to avoid injection of significantly decayed hypochlorite, such as solution strength testing and delivery records MIN | 5pts | TR | TD68 | R309-520-7(3)(b) | Rule requires the water system to provide an operational means, such as keeping records of the delivery date of the hypochlorite solution, to avoid the injection of significantly decayed hypochlorite solutions. C 341 Solution tank is covered to minimize corrosive vapors MIN | 5pts | TR | TD64 | R309-525-11(8)(b)(iii) | Chemical solutions shall be kept covered. C 342 Where concentrated hypochlorite solutions (5% or greater) are handled in containers LARGER than 55 gallons: emergency eyewash station and a safety shower present SIG | 25pts | TR | TD66 | R309-520-7(3)(a)(i) | Where hypochlorite solutions are used at remote locations or in quantities of 55 gallons or less on site, safety showers are not required and alternative emergency eyewash may be provided. This significant deficiency must be corrected within 120 days of notification or have a corrective action plan approved by DDW. NA (Notes: less than 55 gallons) DEQ | Drinking Water Run Date: 09/23/2025 10:35:57 | Rating: Approved UTAH27051 ZION CANYON WATER SYSTEM page 50 of 55 TP003 - LOWER GROTTO TREATMENT PLANT -- Liquid Hypochlorination - Active 343 Where concentrated hypochlorite solutions are handled in containers of 55 gallons or LESS: some method of emergency eyewash provided (a full eyewash station and shower is not required) SIG | 25pts | TR | TD66 | R309-520-7(3)(a)(i) | Where hypochlorite solutions are used at remote locations or in quantities of 55 gallons or less on site, safety showers are not required and alternative emergency eyewash may be provided. This significant deficiency must be corrected within 120 days of notification or have a corrective action plan approved by DDW. C 344 Hypochlorite solution storage area is protected from excessive heat and direct sunlight MIN | 5pts | TR | TD67 | R309-520-7(3)(a)(ii) | States Storage and injection areas shall be designed to minimize the decay in strength of concentrated hypochlorite solutions from excessive heat or direct sunlight. C 345 Records are kept to minimize the use of decayed hypochlorite solution MIN | 5pts | TR | TD68 | R309-520-7(3)(b) | Rule requires the water system to provide an operational means, such as keeping records of the delivery date of the hypochlorite solution, to avoid the injection of significantly decayed hypochlorite solutions. C 346 There are adequate spill containment provisions for acid and caustic liquids. MIN | 15pts | TR | TG59 | R309-525-11(6)(a)(iv)(B), R309-525-11(8)(b)(viii) | Rule requires liquid chemical storage tanks to have an overflow and receiving basin or drain capable of receiving accidental spills or overflows, and meeting all the requirements of R309-525-23. C 347 Is this facility Active or Inactive?A 348 Operational means provided to avoid injection of significantly decayed hypochlorite, such as solution strength testing and delivery records MIN | 5pts | TR | TD68 | R309-520-7(3)(b) | Rule requires the water system to provide an operational means, such as keeping records of the delivery date of the hypochlorite solution, to avoid the injection of significantly decayed hypochlorite solutions. C 349 Solution tank is covered to minimize corrosive vapors MIN | 5pts | TR | TD64 | R309-525-11(8)(b)(iii) | Chemical solutions shall be kept covered. C 350 Where concentrated hypochlorite solutions (5% or greater) are handled in containers LARGER than 55 gallons: emergency eyewash station and a safety shower present SIG | 25pts | TR | TD66 | R309-520-7(3)(a)(i) | Where hypochlorite solutions are used at remote locations or in quantities of 55 gallons or less on site, safety showers are not required and alternative emergency eyewash may be provided. This significant deficiency must be corrected within 120 days of notification or have a corrective action plan approved by DDW. NA (Notes: less than 55 gallons) DEQ | Drinking Water Run Date: 09/23/2025 10:35:57 | Rating: Approved UTAH27051 ZION CANYON WATER SYSTEM page 51 of 55 TP004 - UPPER GROTTO TREATMENT PLANT -- Liquid Hypochlorination - Active 351 Where concentrated hypochlorite solutions are handled in containers of 55 gallons or LESS: some method of emergency eyewash provided (a full eyewash station and shower is not required) SIG | 25pts | TR | TD66 | R309-520-7(3)(a)(i) | Where hypochlorite solutions are used at remote locations or in quantities of 55 gallons or less on site, safety showers are not required and alternative emergency eyewash may be provided. This significant deficiency must be corrected within 120 days of notification or have a corrective action plan approved by DDW. C 352 Hypochlorite solution storage area is protected from excessive heat and direct sunlight MIN | 5pts | TR | TD67 | R309-520-7(3)(a)(ii) | States Storage and injection areas shall be designed to minimize the decay in strength of concentrated hypochlorite solutions from excessive heat or direct sunlight. C 353 Records are kept to minimize the use of decayed hypochlorite solution MIN | 5pts | TR | TD68 | R309-520-7(3)(b) | Rule requires the water system to provide an operational means, such as keeping records of the delivery date of the hypochlorite solution, to avoid the injection of significantly decayed hypochlorite solutions. C 354 There are adequate spill containment provisions for acid and caustic liquids. MIN | 15pts | TR | TG59 | R309-525-11(6)(a)(iv)(B), R309-525-11(8)(b)(viii) | Rule requires liquid chemical storage tanks to have an overflow and receiving basin or drain capable of receiving accidental spills or overflows, and meeting all the requirements of R309-525-23. C 355 Is this facility Active or Inactive?A 356 Operational means provided to avoid injection of significantly decayed hypochlorite, such as solution strength testing and delivery records MIN | 5pts | TR | TD68 | R309-520-7(3)(b) | Rule requires the water system to provide an operational means, such as keeping records of the delivery date of the hypochlorite solution, to avoid the injection of significantly decayed hypochlorite solutions. C 357 Solution tank is covered to minimize corrosive vapors MIN | 5pts | TR | TD64 | R309-525-11(8)(b)(iii) | Chemical solutions shall be kept covered. C 358 Where concentrated hypochlorite solutions (5% or greater) are handled in containers LARGER than 55 gallons: emergency eyewash station and a safety shower present SIG | 25pts | TR | TD66 | R309-520-7(3)(a)(i) | Where hypochlorite solutions are used at remote locations or in quantities of 55 gallons or less on site, safety showers are not required and alternative emergency eyewash may be provided. This significant deficiency must be corrected within 120 days of notification or have a corrective action plan approved by DDW. NA (Notes: less than 55 gallons) DEQ | Drinking Water Run Date: 09/23/2025 10:35:57 | Rating: Approved UTAH27051 ZION CANYON WATER SYSTEM page 52 of 55 TP001 - BIRCH CREEK-WATERCRESS TREATMENT PLANT -- Filtration - General 359 Where concentrated hypochlorite solutions are handled in containers of 55 gallons or LESS: some method of emergency eyewash provided (a full eyewash station and shower is not required) SIG | 25pts | TR | TD66 | R309-520-7(3)(a)(i) | Where hypochlorite solutions are used at remote locations or in quantities of 55 gallons or less on site, safety showers are not required and alternative emergency eyewash may be provided. This significant deficiency must be corrected within 120 days of notification or have a corrective action plan approved by DDW. C 360 Hypochlorite solution storage area is protected from excessive heat and direct sunlight MIN | 5pts | TR | TD67 | R309-520-7(3)(a)(ii) | States Storage and injection areas shall be designed to minimize the decay in strength of concentrated hypochlorite solutions from excessive heat or direct sunlight. C 361 Records are kept to minimize the use of decayed hypochlorite solution MIN | 5pts | TR | TD68 | R309-520-7(3)(b) | Rule requires the water system to provide an operational means, such as keeping records of the delivery date of the hypochlorite solution, to avoid the injection of significantly decayed hypochlorite solutions. C 362 There are adequate spill containment provisions for acid and caustic liquids. MIN | 15pts | TR | TG59 | R309-525-11(6)(a)(iv)(B), R309-525-11(8)(b)(viii) | Rule requires liquid chemical storage tanks to have an overflow and receiving basin or drain capable of receiving accidental spills or overflows, and meeting all the requirements of R309-525-23. C 363 Instrumentation and controls for the process are operational, and in service SIG | 25pts | TR | T021 | R309-100 - R309-600 | All instrumentation needed to verify that treatment processes are sufficient shall be properly calibrated and maintained. At a minimum, this shall include turbidimeters. This significant deficiency must be corrected within 120 days of notification or have a corrective action plan approved by DDW. C 364 Is turbidity monitoring required? ... if yes, answer the following question(s)N 365 What is the maximum filtration rate throughout the year (in gpm/sf)?outlined in plan approval (Notes: 160gpm/120 sq ft) 366 What criteria are used to determine when a filter backwash is needed?NA (Notes: no backwash) 367 What criteria are used to determine filtration is functioning properly? (PSI, Turbidity, Headloss, Flow rate, water quality parameter) headloss 368 Criteria is used to determine filter loading rate meets the manufacturers recommendations? R309-525-15(2) Explain in comments... MIN | 15pts | TR | TGR9 | R309-105-7, 8 & 18, R309-100 through 605 | Trigger for regulatory followup to address concerns. C (Notes: based on approved flow rate for the selected filter) 369 What criteria are used to determine if filter media needs to be replaced?pressure differential (Notes: and time based on manufacturer recommendation) 370 Is backwash flow rate verified to determine it meets minimum requirements? MIN | 15pts | TR | T076 | R309-525-15(7) | Rule requires that backwash systems be designed and operated to provide for adequate backwash with minimum media loss. NA (Notes: n/a) DEQ | Drinking Water Run Date: 09/23/2025 10:35:57 | Rating: Approved UTAH27051 ZION CANYON WATER SYSTEM page 53 of 55 TP003 - LOWER GROTTO TREATMENT PLANT -- Filtration - General TP004 - UPPER GROTTO TREATMENT PLANT -- Filtration - General 371 If system filters by Direct Filtration, the plant is configured to shut down automatically when a source water exceeds 20 NTU for longer than 3 hours, or when the source water turbidity exceeds 30 NTU at any time? R309-530-5(3)(g) SIG | 25pts | TR | T021 | R309-100 - R309-600 | All instrumentation needed to verify that treatment processes are sufficient shall be properly calibrated and maintained. At a minimum, this shall include turbidimeters. This significant deficiency must be corrected within 120 days of notification or have a corrective action plan approved by DDW. NA (Notes: n/a) 372 Instrumentation and controls for the process are operational, and in service SIG | 25pts | TR | T021 | R309-100 - R309-600 | All instrumentation needed to verify that treatment processes are sufficient shall be properly calibrated and maintained. At a minimum, this shall include turbidimeters. This significant deficiency must be corrected within 120 days of notification or have a corrective action plan approved by DDW. C 373 Is turbidity monitoring required? ... if yes, answer the following question(s)N 374 What is the maximum filtration rate throughout the year (in gpm/sf)?60 gpm/170 sqft 375 What criteria are used to determine when a filter backwash is needed?NA (Notes: no backwash) 376 What criteria are used to determine filtration is functioning properly? (PSI, Turbidity, Headloss, Flow rate, water quality parameter) headloss 377 Criteria is used to determine filter loading rate meets the manufacturers recommendations? R309-525-15(2) Explain in comments... MIN | 15pts | TR | TGR9 | R309-105-7, 8 & 18, R309-100 through 605 | Trigger for regulatory followup to address concerns. C (Notes: outlined in plan approval per the Harmsco filter approval by Colorado Dept. of Public Health) 378 What criteria are used to determine if filter media needs to be replaced?pressure differential and time 379 Is backwash flow rate verified to determine it meets minimum requirements? MIN | 15pts | TR | T076 | R309-525-15(7) | Rule requires that backwash systems be designed and operated to provide for adequate backwash with minimum media loss. C (Notes: no backwash) 380 If system filters by Direct Filtration, the plant is configured to shut down automatically when a source water exceeds 20 NTU for longer than 3 hours, or when the source water turbidity exceeds 30 NTU at any time? R309-530-5(3)(g) SIG | 25pts | TR | T021 | R309-100 - R309-600 | All instrumentation needed to verify that treatment processes are sufficient shall be properly calibrated and maintained. At a minimum, this shall include turbidimeters. This significant deficiency must be corrected within 120 days of notification or have a corrective action plan approved by DDW. NA (Notes: not DF) 381 Instrumentation and controls for the process are operational, and in service SIG | 25pts | TR | T021 | R309-100 - R309-600 | All instrumentation needed to verify that treatment processes are sufficient shall be properly calibrated and maintained. At a minimum, this shall include turbidimeters. This significant deficiency must be corrected within 120 days of notification or have a corrective action plan approved by DDW. C DEQ | Drinking Water Run Date: 09/23/2025 10:35:57 | Rating: Approved UTAH27051 ZION CANYON WATER SYSTEM page 54 of 55 TP001 - BIRCH CREEK-WATERCRESS TREATMENT PLANT -- Cartridge Filtration TP003 - LOWER GROTTO TREATMENT PLANT -- Cartridge Filtration TP004 - UPPER GROTTO TREATMENT PLANT -- Cartridge Filtration 382 Is turbidity monitoring required? ... if yes, answer the following question(s)N 383 What is the maximum filtration rate throughout the year (in gpm/sf)?60 gpm/170 sq ft 384 What criteria are used to determine when a filter backwash is needed?NA (Notes: no backwash) 385 What criteria are used to determine filtration is functioning properly? (PSI, Turbidity, Headloss, Flow rate, water quality parameter) Headloss 386 Criteria is used to determine filter loading rate meets the manufacturers recommendations? R309-525-15(2) Explain in comments... MIN | 15pts | TR | TGR9 | R309-105-7, 8 & 18, R309-100 through 605 | Trigger for regulatory followup to address concerns. C (Notes: outlined in plan approval per the Harmsco filter approval by Colorado Dept. of Public Health) 387 What criteria are used to determine if filter media needs to be replaced?Headloss and time per manufacturer recommendation 388 Is backwash flow rate verified to determine it meets minimum requirements? MIN | 15pts | TR | T076 | R309-525-15(7) | Rule requires that backwash systems be designed and operated to provide for adequate backwash with minimum media loss. C (Notes: no backwash) 389 If system filters by Direct Filtration, the plant is configured to shut down automatically when a source water exceeds 20 NTU for longer than 3 hours, or when the source water turbidity exceeds 30 NTU at any time? R309-530-5(3)(g) SIG | 25pts | TR | T021 | R309-100 - R309-600 | All instrumentation needed to verify that treatment processes are sufficient shall be properly calibrated and maintained. At a minimum, this shall include turbidimeters. This significant deficiency must be corrected within 120 days of notification or have a corrective action plan approved by DDW. NA (Notes: not direct filtration) 390 What filter is used in the cartridge?O (Notes: Harmsco HC/170-1 Polyester filter) 391 Is filter used for Surface Water/UDI log removal credits?N 392 What criteria is used to determine the filter is functioning according to manufacturer's specifications? pressure differential 393 What filter is used in the cartridge?O (Notes: Harmsco HC/170-1 Polyester filter) 394 Is filter used for Surface Water/UDI log removal credits?N 395 What criteria is used to determine the filter is functioning according to manufacturer's specifications? pressure differential 396 What filter is used in the cartridge?O (Notes: Harmsco HC/170-1 Polyester filter) 397 Is filter used for Surface Water/UDI log removal credits?N 398 What criteria is used to determine the filter is functioning according to manufacturer's specifications? pressure differential DEQ | Drinking Water Run Date: 09/23/2025 10:35:57 | Rating: Approved UTAH27051 ZION CANYON WATER SYSTEM page 55 of 55