ONSITE SEWAGE SYSTEMS USE, MONITORING & MAINTENANCE FIELD MANUAL V EFFECTIVE JUNE 1, 2008

Transcription

1 ONSITE SEWAGE SYSTEMS USE, MONITORING & MAINTENANCE FIELD MANUAL V EFFECTIVE JUNE 1, 2008 Onsite Sewage Systems Use, Monitoring & Maintenance Field Manual - Page: 1

2 Table of Contents Section Page Preface 4 Inspection Frequency & Reporting Requirements 5 Minimum Dosing Requirements 8 Accessibility & Retrofit Requirements 9 Minor Repair Table 13 Individual Component Checklists General Site & System Conditions 14 Control Panels 15 Holding Tanks 17 Trash Tanks 18 Grease Traps 19 Septic Tanks 20 Clarifying Tanks 21 Pump Tanks & Pump Basins 22 Recirculation Tanks 23 Effluent Pumps 24 Siphons 25 Distribution Box 26 Aerobic Treatment Units 27 Disinfection: Chlorine 28 Disinfection: Ozone 29 Disinfection: Ultra Violet 30 Drainfield: Gravity (including beds) 31 Drainfield: Pressure, Pressure Beds & Sand Lined Trench / Bottomless Sandfilters 32 Drainfield: Drip 33 Media Filter: Biofilter 34 Media Filter: Mound 35 Media Filter: Recirculating Sand Filter 36 Media Filter: Sand Filter 37 Media Filter: Textile Filter 38 Cleanout Construction Example 40 Septic Tank Installation Example 41 Functioning Septic Tank Example 42 Septic Tank Effluent Filter Example 43 Pump Tank Time Dosed Installation Example 44 Pump Tank Demand Dosed Installation Example 45 Distribution Box Example 46 Pressure Distribution/ Monitoring Port Combo Example 47 Onsite Sewage Systems Use, Monitoring & Maintenance Field Manual - Page: 2

3 Monitoring Port Construction (Gravelless Chamber) 48 Pressure Distribution Clean-out Construction 49 Tank Retrofitting 50 Retrofitting a Drainfield 55 Retrofitting a Gravelless Drainfield 58 Onsite Sewage Systems Use, Monitoring & Maintenance Field Manual - Page: 3

4 PREFACE How to Use This Guide This guideline booklet has been developed for the Monitoring & Maintenance (M&M) Specialist to use while conducting inspections of Onsite Sewage Systems (OSS ). The purpose of this guide is to: Establish a baseline of the required inspection actions for each component of an OSS. Provide M&M Specialists with a clear and concise list of the minimum inspection activities that are required as part of their certification with the Health District. Generate consistency among certified contractors in what they inspect, how they inspect and how/what they report. This booklet is arranged by individual OSS components so that the M&M Specialist can match the minimum inspection requirements to each individual OSS that they encounter. The M&M Specialist may opt to inspect the system more thoroughly or frequently, but the inspection shall meet the minimums of this guideline. The following defines each section of the components inspection: Inspection Criteria: Items to be inspected for each individual component. Minimum Inspection Frequency: The frequency of inspection per component. Inspection Minimum: A brief description of what is expected to be done at a minimum for each inspection item. Sometimes the M&M Specialist must refer to the manufacturer s guidelines for reference to this requirement. Corrective Action: The Health Districts response to the deficiency, which is determined by the risk posed to human health, or the functionality of the system. Onsite Sewage Systems Use, Monitoring & Maintenance Field Manual - Page: 4

5 Inspection Frequency & Reporting Requirements for M&M Specialists This section is being displayed in a Question & Answer format. Question: Answer: My new customer has previously had Monitoring & Maintenance Inspections. When is the first inspection due? When taking on a new customer who has previously had Monitoring & Maintenance in the past, so long as they are current with their inspections, you may wait until their next scheduled visit is due. We do however, recommend that you conduct an initial inspection when you initiate your contract with the customer which will align their inspections with your contract period. Question: Answer: We just completed an inspection/pumping. There were problems identified when I arrived onsite, however during the service the deficiencies were corrected. How should I report those? All deficiencies identified during the service must be identified on the report. Without this information we cannot show the progress that our Monitoring & Maintenance Program is making. At the end of the inspection/pump report, you may state what the final status is. If everything is corrected, simply mark all corrections made and the report will not be flagged for review. Onsite Sewage Systems Use, Monitoring & Maintenance Field Manual - Page: 5

6 Question: Answer: We visited a site and noticed surfacing effluent. What do we need to do? Certification requirements obligate you to report the address of any property where you have observed an onsite sewage system failure within five days of the observation. This can be done by submitting Notes to Regulator correspondence through OnlineRME, making a phone call or by filing an onsite sewage system inspection report (pumping may file a pump report). Question: Answer: We completed a routine inspection/pumping of an onsite sewage system. How long do we have to report it? Certification requirements obligate you to file your inspection or pump report within 30 days of the activity. This applies to routine visits (including semi-annual work). Please keep in mind that at times, inspections and/or pumping activities may be initiated by a real estate transaction. In these cases the customers may need the documentation sooner. Question: Answer: We were hired to complete some minor repair/modification work. How long do we have to report that work? What form do we use? All minor repairs must be reported to the Health District within 14 days of the activity. Policy #15 lays out the reporting requirements; what types of jobs qualify as minor repairs and who may complete them. Monitoring & Maintenance specialists may substitute the submission of the As-Built / Record of Construction for Minor Repairs & Retrofitting by submitting a Monitoring & Maintenance Inspection Report, marked as follow-up. Question: Answer: We just signed up a new customer for a Monitoring & Maintenance Contract. How quickly must we record that within OnlineRME? The quicker the contract is entered, the better. At times a customer may be getting a contract as a result of an enforcement action with the District and until the contract is entered we don't know they have Onsite Sewage Systems Use, Monitoring & Maintenance Field Manual - Page: 6

7 complied with the order. However, certification requirements obligate you to enter the contract within 30 days of signing the customer. Question: Answer: Our new customer has never had a Monitoring & Maintenance Inspection. When is the first inspection due? For new systems that are less than 1 year old or 6 months old for Proprietary systems that require onsite sewage system inspections every six months, the first inspection shall be conducted either at the 1 year or 6 month mark. It is recommended that you conduct an initial complete inspection when you take on the customer, which will align your contract period with the inspection period. For systems that are older than 1 year or 6 months for proprietary systems, the first inspection must be completed within 30 days of contract initiation. Again we recommend that you conduct an initial inspection when you take on the customer to align your contract period with the inspection period. Onsite Sewage Systems Use, Monitoring & Maintenance Field Manual - Page: 7

8 Minimum Dosing Requirements Per Component Type System Type Glendon BioFilter Minimum Doses Per Day Proprietary Pressure Distribution Drainfield 6 Sand Based Treatment Systems * Drip Irrigation Drainfield 12 * ¼ to ½ gallons per orifice per dose not to exceed Maximum Design Flow. NOTE: For Sand Based Treatment Systems: If orifice information is unknown due to the age of the system or lack of records, the minimum doses per day shall be no less than 12. Onsite Sewage Systems Use, Monitoring & Maintenance Field Manual - Page: 8

9 Accessibility & Retrofit Requirements The following retrofit and accessibility requirements are to be utilized in the following manner: Existing Systems: Gravity Onsite Sewage Systems: Gravity Onsite Sewage Systems must meet the minimum retrofit and accessibility requirements per the applicable regulations at the time of original Onsite Sewage Disposal Permit approval. NOTE: If the onsite sewage system is being repaired/modified or if property improvements are proposed/made; the Onsite Sewage System must meet the most current accessibility requirements defined within this document. Alternative Onsite Sewage Systems: Alternative Onsite Sewage Systems installed prior to May 1, 2008, must meet the minimum retrofit and accessibility requirements per BKCHD Ordinance NOTE: If the onsite sewage system is not accessible or any component is being repaired/modified; the Onsite Sewage System must meet the most current accessibility requirements defined within this document. Exception: The inlet and outlet baffles are not required to be made accessible unless the outlet baffle has an outlet screen for systems installed prior to May 1, Upgrade/Retrofit Examples Junction Box Upgrade: If the onsite sewage system is fully accessible, except that there is not a junction box located within the riser for quick disconnect of the pump/alarm wiring and the wires to the pump are running under the riser lid. If the pump/control wiring is hanging loose, internally connected with wire nuts, this must be Onsite Sewage Systems Use, Monitoring & Maintenance Field Manual - Page: 9

10 corrected by having an electrician add a waterproof junction box within the tank and re-wiring the pump/controls per current code. If the pump/control wiring is directly connected with no wire nuts located within the tank and all operation and maintenance duties can be performed, the addition of the junction box may be delayed until the time when wiring within the tank is necessary. At the time up any electrical work, the junction box shall be added. New Systems - Installed under KCHD Ordinance & 2008A-01: General Site Conditions Control Panels: 1. Installed in an exterior location that is accessible, between three and five feet in elevation above finished grade, and that meets Washington State Department of Labor and Industry s electrical safety requirements; 2. Connected to dedicated electrical circuits for the alarms and pumps so that the alarm circuit is independent of the pump circuit; 3. Contain audible and visual alarms to alert the owner, resident, and/or occupant of a system malfunction; and 4. Include a remote notification device for the alarm system, when the onsite sewage system alarm notification device is located greater than 100 feet from the building it is connected to, such as an auto-dialer or telemetry notification system, to notify the respective Monitoring and Maintenance Service Provider and/or the property owner/occupant of alarm events. Onsite Sewage System Components Accessibility: 1. All components must be accessible to yards, animals restrained etc. so that a complete and thorough maintenance event can occur. 2. All Sampling ports when present shall have risers installed to finish grade. Tanks Includes: Holding, Trash, Grease, Septic and Clarifying Tanks 6 Minimum Riser to surface over inlet and outlet baffles 24 Minimum Main compartment riser(s) to surface Onsite Sewage Systems Use, Monitoring & Maintenance Field Manual - Page: 10

11 Pump Tanks Includes Recirculation Tank 24 Minimum Main compartment riser(s) to surface Internal Watertight Junction Box Independent Float Tree Aerobic Treatment Units Includes Packed Bed Filters All Compartments with risers to surface Aerobic Mechanisms accessible (risers, etc.) Exterior of Buildings Visual/Audible Alarms Present Exterior of Buildings Sand Filters - Including Bottomless Sand Filters Pump Vault riser to surface (if applicable) Independent Float Tree (If Applicable) Screw caps at ends of laterals Clean-outs brought up to finish grade and enclosed within 6 riser Valves accessible in 6 (minimum) riser to surface Air Coil accessible (if present) within riser to surface Disinfection Chlorine UV - Ozone Access riser to surface Visual/Audible Alarms Present Exterior of Buildings UV Units are to be installed in pump tanks Onsite Sewage Systems Use, Monitoring & Maintenance Field Manual - Page: 11

12 Drainfield: Gravity Laterals & Gravity Beds Monitoring ports required (existing drainfields that do not show that monitoring ports were installed per the original as-builts may be exempt from installing monitoring ports) Drainfield: Pressure Laterals, Pressure Beds and Sand Lined Trenches Monitoring ports required Valves accessible in 6 (minimum) riser to surface Clean-outs brought up to finish grade and enclosed within 6 (minimum) riser. Sweep 90 s are required. Screw caps at end of laterals Drainfield: Drip Irrigation Headwork assembly accessible within riser to surface (all valves and spin filters included ) 6 (minimum) risers to surface for vacuum breakers Media Filter: Mound Screw caps at ends of laterals Ball or gate valves accessible in 6 riser to surface 6 (minimum) risers to surface for clean-outs Media Filter: Biofilter Dosing ports to surface Valves accessible within riser to surface (M31 & M32) Additional accessibility items may be required based upon site conditions. Onsite Sewage Systems Use, Monitoring & Maintenance Field Manual - Page: 12

13 Minor Repair Table Onsite Sewage Systems Use, Monitoring & Maintenance Field Manual - Page: 13

14 Individual Component Checklist General Site & System Conditions Inspection frequency: Annually Minimum All checklist items contained within the component must be inspected and reported for each required inspection. These items may be skipped on a complaint or follow-up inspection, however if any deficiencies are identified for any of the questions they must be identified as such on the report. Inspection Minimums & Corrective Action Requirements: Inspection Criteria: Inspection Minimum: Corrective Action: All required service performed (if no - specify omitted inspection items in notes) All components shall be inspected for function. Components appear to be w atertight - no visual leaks: Inspect components for w ater tightness w here applicable. Improper encroachment (structures / impervious surfaces); cover; or settling problems observed: Check that components meet appropriate setbacks, are free from adverse cover and no adverse settling has occurred. Surfacing effluent from any component (including mound seepage): Visually inspect all components to ensure that there is no surfacing effluent. Must be corrected immediately. Health District w ill issue Notice To Correct Violation Structures connected to onsite sew age system occupied: Identify if the property has been vacated. N/A Inspected components are accessible for maintenance: All components shall be easily accessible for maintenance. Components shall not be located w ithin building. Lids secured per product manufacturers specifications or as designed: Indicate upon arrival if lids w ere not secure. Upon departure lids must be secured. Inspected components appear to be in good physical condition: Inspect all components to ensure that they are in the condition as Onsite Sewage Systems Use, Monitoring & Maintenance Field Manual - Page: 14

15 designed or intended. Control Panels Inspection frequency: Annually Minimum All checklist items contained within the component must be inspected and reported for each required inspection. NOTE: The example shown is for a single pump panel. For multiple pump panels the same requirements apply for each question. Inspection Minimums & Corrective Action Requirements: Inspection Criteria: Inspection Minimum: Corrective Action: Panel functioning (including Alarm): Audio/Visual/Mechanical Inspection Must be corrected immediately. Health District w ill issue Notice To Correct Violation The Panel has been setup to dose the system a maximum of gpd: Report the gallons per day maximum that the system w ill dose w ith the current settings N/A Pump 1: ETM hours (override in parentheses - if present): Report the arrival ETM hours. If the panel has an override setting, enter the result in parentheses. N/A Pump 1: Cycle Count (override in parentheses - if present): Report the arrival Cycle Count. If the panel has an override setting, enter the result in parentheses. N/A Pump 1: Arrival gallons per dose (override in parentheses - if present): Report the arrival gallons per dose. If the panel has an override setting, enter the result in parentheses. N/A Pump 1: Arrival off hours (override in parentheses - if present): Report the arrival off hours. If the panel has an override setting, enter the result in parentheses. N/A Pump 1: Arrival on minutes (override in parentheses - if present): Report the arrival on minutes. If the panel has an override setting, enter the result in parentheses. N/A Pump 1: Timer setting adjustments w ere required (If yes indicate new If the timer settings change, report the new result and comment w hy the N/A Onsite Sewage Systems Use, Monitoring & Maintenance Field Manual - Page: 15

16 timer settings and state reason in comments) change w as made. Pump 1: New gallons per dose (override in parentheses) If the timer settings w ere changed, report the new gallons per dose setting. If the panel has an override setting, enter the new override setting in parentheses. N/A Pump 1: New off hours (override in parentheses) If the timer settings w ere changed, report the new off hour setting. If the panel has an override setting, enter the new override setting in parentheses. N/A Pump 1: New on minutes (override in parentheses) If the timer settings w ere changed, report the new on minute setting. If the panel has an override setting, enter the new override setting in parentheses. N/A Onsite Sewage Systems Use, Monitoring & Maintenance Field Manual - Page: 16

17 Holding Tank Inspection frequency: Annually Minimum All checklist items contained within the component must be inspected and reported for each required inspection. Inspection Minimums & Corrective Action Requirements: Inspection Criteria: Inspection Minimum: Corrective Action: Pumping Needed: Effluent is greater than 3/4 volume of holding tank or at alarm event Must be corrected immediately. Health District w ill issue Notice To Correct Violation Onsite Sewage Systems Use, Monitoring & Maintenance Field Manual - Page: 17

18 Trash Tank Inspection frequency: Annually All checklist items contained within the component must be inspected and reported for each required inspection. Inspection Minimums & Corrective Action Requirements: Inspection Criteria: Inspection Minimum: Corrective Action: Effluent level w ithin operational limits (if NO explain in comments) Inspect inlet and outlet to ensure that liquid levels are excessively above the invert. Depends upon item identified. If the problem identified is found to be detrimental to the system function, immediate correction w ill be required. Health District w ill issue Notice To Correct Violation. Otherw ise it must be corrected by the. All required baffles in place (N/A = No baffles required): Visual inspection requirement based upon permit approval date Compartment 1 Scum accumulation (Inches, if other specify): Checked w ith Scum Measurement Tool Compartment 1 Sludge accumulation (Inches, if other specify): Checked w ith Sludge Measurement Tool Pumping Needed: Scum/Sludge is greater than 2/3 volume of tank Onsite Sewage Systems Use, Monitoring & Maintenance Field Manual - Page: 18

19 Grease Trap Inspection frequency: Annually Minimum All checklist items contained within the component must be inspected and reported for each required inspection. Inspection Minimums & Corrective Action Requirements: Inspection Criteria: Inspection Minimum: Corrective Action: Effluent level w ithin operational limits (if NO explain in comments) Inspect inlet and outlet to ensure that liquid levels are excessively above the invert. Depends upon item identified. If the problem identified is found to be detrimental to the system function, immediate correction w ill be required. Health District w ill issue Notice To Correct Violation. Otherw ise it must be corrected by the. All required baffles in place (N/A = No baffles required): Visual inspection requirement based upon permit approval date Compartment 1 Scum accumulation (Inches, if other specify): Checked w ith Scum Measurement Tool Compartment 1 Sludge accumulation (Inches, if other specify): Checked w ith Sludge Measurement Tool Compartment 2 Scum accumulation (Inches, if other specify): Checked w ith Scum Measurement Tool Compartment 2 Sludge accumulation (Inches, if other specify): Checked w ith Sludge Measurement Tool Pumping Needed: As Needed Onsite Sewage Systems Use, Monitoring & Maintenance Field Manual - Page: 19

20 Septic Tanks Inspection frequency: Annually Minimum All checklist items contained within the component must be inspected and reported for each required inspection. Inspection Minimums & Corrective Action Requirements: Inspection Criteria: Inspection Minimum: Corrective Action: Effluent level w ithin operational limits (if NO explain in comments) Inspect inlet and outlet to ensure that liquid levels are excessively above the invert. Depends upon item identified. If the problem identified is found to be detrimental to the system function, immediate correction w ill be required. Health District w ill issue Notice To Correct Violation. Otherw ise it must be corrected by the next routine inspection. All required baffles in place (N/A = No baffles required): Visual inspection requirement based upon permit approval date Effluent Filter Cleaned (N/A = Not Present): Clean w ith pressurized w ater N/A Compartment 1 Scum accumulation (Inches, if other specify): Checked w ith Scum Measurement Tool Compartment 1 Sludge accumulation (Inches, if other specify): Checked w ith Sludge Measurement Tool Compartment 2 Scum accumulation (Inches, if other specify): Checked w ith Scum Measurement Tool Compartment 2 Sludge accumulation (Inches, if other specify): Checked w ith Sludge Measurement Tool Compartment 3 Scum accumulation (Inches, if other specify): Checked w ith Scum Measurement Tool Compartment 3 Sludge accumulation (Inches, if other specify): Checked w ith Sludge Measurement Tool Pumping Needed: Scum/Sludge is greater than 2/3 volume of tank Onsite Sewage Systems Use, Monitoring & Maintenance Field Manual - Page: 20

21 Clarifying Tanks Inspection frequency: Annually Minimum All checklist items contained within the component must be inspected and reported for each required inspection. Inspection Minimums & Corrective Action Requirements: Inspection Criteria: Inspection Minimum: Corrective Action: All required baffles in place (N/A = No baffles required): Visual inspection requirement based upon permit approval date Compartment 1 Scum accumulation (Inches, if other specify): Checked w ith Scum Measurement Tool Compartment 1 Sludge accumulation (Inches, if other specify): Checked w ith Sludge Measurement Tool Pumping Needed: Scum/Sludge is greater than 2/3 volume of tank Onsite Sewage Systems Use, Monitoring & Maintenance Field Manual - Page: 21

22 Pump Tank & Pump Basin Inspection frequency: Annually Minimum All checklist items contained within the component must be inspected and reported for each required inspection. Inspection Minimums & Corrective Action Requirements: Inspection Criteria: Inspection Minimum: Corrective Action: Compartment 1 Scum accumulation (Inches, if other specify): Checked w ith Scum Measurement Tool Compartment 1 Sludge accumulation (Inches, if other specify): Checked w ith Sludge Measurement Tool Pumping Needed: If sludge has accumulated to levels that are conducive to transport of sludge out of tank. (IE: Sludge is at the level of the block, or near the intake points of the basin/screen) Onsite Sewage Systems Use, Monitoring & Maintenance Field Manual - Page: 22

23 Recirculation Tank Inspection frequency: Annually Minimum All checklist items contained within the component must be inspected and reported for each required inspection. Inspection Minimums & Corrective Action Requirements: Inspection Criteria: Inspection Minimum: Corrective Action: All required baffles in place (N/A = No baffles required): Visual inspection requirement based upon permit approval date Effluent Filter Cleaned (N/A = Not Present): Clean w ith pressurized w ater N/A Compartment 1 Scum accumulation (Inches, if other specify): Checked w ith Scum Measurement Tool Compartment 1 Sludge accumulation (Inches, if other specify): Checked w ith Sludge Measurement Tool Compartment 2 Scum accumulation (Inches, if other specify): Checked w ith Scum Measurement Tool Compartment 2 Sludge accumulation (Inches, if other specify): Checked w ith Sludge Measurement Tool Pumping Needed: Scum/Sludge is greater than 2/3 volume of tank Onsite Sewage Systems Use, Monitoring & Maintenance Field Manual - Page: 23

24 Effluent Pump Inspection frequency: Annually Minimum All checklist items contained within the component must be inspected and reported for each required inspection. These items may be skipped on a complaint or follow-up inspection, however if any deficiencies are identified for any of the questions they must be identified as such on the report. Inspection Minimums & Corrective Action Requirements: Inspection Criteria: Inspection Minimum: Corrective Action: Controls functioning Visual check of on/off and alarm mechanism On/OFF Control - Must be corrected immediately. Health District w ill issue Notice To Correct Violation Alarm - Pump Vault Filter Cleaned: N/A N/A Tested gallons per minute flow : N/A N/A Onsite Sewage Systems Use, Monitoring & Maintenance Field Manual - Page: 24

25 Siphon Inspection frequency: Annually Minimum All checklist items contained within the component must be inspected and reported for each required inspection. These items may be skipped on a complaint or follow-up inspection, however if any deficiencies are identified for any of the questions they must be identified as such on the report. Inspection Minimums & Corrective Action Requirements: Inspection Criteria: Inspection Minimum: Corrective Action: Siphon Cleaned: N/A N/A Siphon Dose Volume Calculate and verify dose volume N/A Siphon functioning Force a dose to ensure that the siphon w orks as intended Must be corrected immediately. Health District w ill issue Notice To Correct Violation Onsite Sewage Systems Use, Monitoring & Maintenance Field Manual - Page: 25

26 Distribution Box Inspection frequency: Annually Minimum If accessible All checklist items contained within the component must be inspected and reported for each required inspection. These items may be skipped on a complaint or follow-up inspection, however if any deficiencies are identified for any of the questions they must be identified as such on the report. Inspection Minimums & Corrective Action Requirements: Inspection Criteria: Inspection Minimum: Corrective Action: D-Box in good condition: Visual inspection of component Must be corrected immediately. Health District w ill issue Notice To Correct Violation D-Box outlets are set to equal elevation: Visual inspection of component Must be corrected immediately. Health District w ill issue Notice To Correct Violation Onsite Sewage Systems Use, Monitoring & Maintenance Field Manual - Page: 26

27 Aerobic Treatment Units (ATU s) Inspection frequency: Semi-Annually, Minimum. Some manufactured products require additional inspections. All checklist items contained within the component must be inspected and reported for each required inspection. These items may be skipped on a complaint or follow-up inspection, however if any deficiencies are identified for any of the questions they must be identified as such on the report. Inspection Minimums & Corrective Action Requirements: Inspection Criteria: Inspection Minimum: Corrective Action: Effluent level w ithin operational limits (if NO explain in comments): Per Manufacturer Must be corrected immediately. Health District w ill issue Notice To Correct Violation Aerobic Mechanism appears to be functioning per manufactures specifications: Per Manufacturer Must be corrected immediately. Health District w ill issue Notice To Correct Violation ATU Serviced per manufacturer's requirements including cleaning of applicable filter(s): Per Manufacturer N/A Trash compartment solids accumulation w ithin operational limits per manufacture (n/a no trash compartment): Per Manufacturer Aerobic Chamber solids accumulation w ithin operation limits per manufacture (n/a = Aerobic Chamber): Per Manufacturer Clarifying Chamber solids accumulation w ithin operational limits per manufacturer (N/A = No Clarifying Chamber): Per Manufacturer Pumping Needed: Per Manufacturer Onsite Sewage Systems Use, Monitoring & Maintenance Field Manual - Page: 27

28 Disinfection: Chlorine Inspection frequency: Semi - Annually Minimum All checklist items contained within the component must be inspected and reported for each required inspection. These items may be skipped on a complaint or follow-up inspection, however if any deficiencies are identified for any of the questions they must be identified as such on the report. Inspection Minimums & Corrective Action Requirements: Inspection Criteria: Inspection Minimum: Corrective Action: Disinfection Agent Present: MUST BE PRESENT Must be corrected immediately. Health District w ill issue Notice To Correct Violation Onsite Sewage Systems Use, Monitoring & Maintenance Field Manual - Page: 28

29 Disinfection: Ozone Inspection frequency: Semi - Annually Minimum All checklist items contained within the component must be inspected and reported for each required inspection. These items may be skipped on a complaint or follow-up inspection, however if any deficiencies are identified for any of the questions they must be identified as such on the report. Inspection Minimums & Corrective Action Requirements: Inspection Criteria: Inspection Minimum: Corrective Action: Alarm mechanism functioning as intended: Visual inspection of mechanical alarm device visual and audible required Ozone sensor w orking properly: Visual inspection of mechanical device per manufacturer Must be corrected immediately. Health District w ill issue Notice To Correct Violation Onsite Sewage Systems Use, Monitoring & Maintenance Field Manual - Page: 29

30 Disinfection: Ultra Violet Inspection frequency: Semi - Annually Minimum All checklist items contained within the component must be inspected and reported for each required inspection. These items may be skipped on a complaint or follow-up inspection, however if any deficiencies are identified for any of the questions they must be identified as such on the report. Inspection Minimums & Corrective Action Requirements: Inspection Criteria: Inspection Minimum: Corrective Action: Alarm mechanism functioning as intended: Visual inspection of mechanical alarm device visual and audible required UV Bulb cleaned: Per manufacturer N/A Disinfection Unit light on: Visual inspection Must be corrected immediately. Health District w ill issue Notice To Correct Violation Onsite Sewage Systems Use, Monitoring & Maintenance Field Manual - Page: 30

31 Drainfield: Gravity (including beds) Inspection frequency: Annually Minimum All checklist items contained within the component must be inspected and reported for each required inspection. These items may be skipped on a complaint or follow-up inspection, however if any deficiencies are identified for any of the questions they must be identified as such on the report. Inspection Minimums & Corrective Action Requirements: Inspection Criteria: Inspection Minimum: Corrective Action: Ponding Present Check monitoring ports if present N/A One or more laterals have been turned off (if yes explain in comments): Notify Health District if a lateral w as turned off N/A One or more laterals have been turned off for a period greater than 12 months Notify Health District if a lateral w as turned off for greater than 12 months The Health District w ill identify the system as non-conforming per the requirements of policy 27. Onsite Sewage Systems Use, Monitoring & Maintenance Field Manual - Page: 31

32 Drainfield: Pressure, Pressure Beds & Sand Lined Trench / Bottomless Sandfilter Inspection frequency: Annually Minimum All checklist items contained within the component must be inspected and reported for each required inspection except for: 1. Average squirt height (optional) Please note: This is required anytime the valves have been adjusted or a pump has been replaced. These items may be skipped on a complaint or follow-up inspection, however if any deficiencies are identified for any of the questions they must be identified as such on the report. Inspection Minimums & Corrective Action Requirements: Inspection Criteria: Inspection Minimum: Corrective Action: Lateral lines flushed Open Lateral End Cleanouts and flush system by running pump N/A Average squirt height (if performed) (Feet, if other specify): Measure from lateral distribution line Ponding Present Check monitoring ports if present N/A One or more laterals have been turned off (if yes explain in comments): Notify Health District if a lateral w as turned off N/A One or more laterals have been turned off for a period greater than 12 months Notify Health District if a lateral w as turned off for greater than 12 months The Health District w ill identify the system as non-conforming per the requirements of policy 27. NOTE: The squirt height difference must not exceed 21% (10% flow difference) between orifices on any one lateral. The squirt height difference over the entire system must not exceed 32% (15% flow difference). Onsite Sewage Systems Use, Monitoring & Maintenance Field Manual - Page: 32

33 Drainfield: Drip Inspection frequency: Semi - Annually Minimum All checklist items contained within the component must be inspected and reported for each required inspection. These items may be skipped on a complaint or follow-up inspection, however if any deficiencies are identified for any of the questions they must be identified as such on the report. Inspection Minimums & Corrective Action Requirements: Inspection Criteria: Inspection Minimum: Corrective Action: Drip System flushed: Flush system per design requirements N/A Filters cleaned (N/A = No Filter Present): Manually clean filters N/A Pressure Gauges indicate normal operation: Visual reading Are solenoid valves functioning (NA = Manual Flush): Cycle through flush operation Flow meter reading (in gallons (if return flow meter present place results in brackets): Visual reading N/A Vacuum relief valves (vents) functioning correctly Cycle system to evaluate function of valves Wet dispersal area(s) due to chimney effect: Visual observation Must be corrected immediately. Health District w ill issue Notice To Correct Violation Onsite Sewage Systems Use, Monitoring & Maintenance Field Manual - Page: 33

34 Media Filter: Biofilter Inspection frequency: Semi Annual First 2 years; Annually Minimum Thereafter All checklist items contained within the component must be inspected and reported for each required inspection except for: These items may be skipped on a complaint or follow-up inspection, however if any deficiencies are identified for any of the questions they must be identified as such on the report. Inspection Minimums & Corrective Action Requirements: Inspection Criteria: Inspection Minimum: Corrective Action: Equalized dosing Flow Test utilizing approved manufacturers methods. Must be corrected immediately. Health District w ill issue Notice To Correct Violation Slope integrity maintained: Visual Must be corrected immediately. Health District w ill issue Notice To Correct Violation Sludge accumulation (inches, if other specify): Visual measurement N/A Pumping Needed: Per Manufacturer Onsite Sewage Systems Use, Monitoring & Maintenance Field Manual - Page: 34

35 Media Filter: Mound Inspection frequency: Annually Minimum All checklist items contained within the component must be inspected and reported for each required inspection except for: 1. Average squirt height (optional) These items may be skipped on a complaint or follow-up inspection, however if any deficiencies are identified for any of the questions they must be identified as such on the report. Inspection Minimums & Corrective Action Requirements: Inspection Criteria: Inspection Minimum: Corrective Action: Slope integrity maintained: Visual inspection of slope Must be corrected immediately. Health District w ill issue Notice To Correct Violation Lateral lines flushed Open Lateral End Cleanouts and flush system by running pump N/A Average squirt height (if performed) (Feet, if other specify): Measure from lateral distribution line Ponding at sand media/(soil interface if applicable) or top of sand media dispersal area (if yes provide comments) (NA if No ports) View ed through monitoring ports Must be corrected immediately. Health District w ill issue Notice To Correct Violation NOTE: The squirt height difference must not exceed 21% (10% flow difference) between orifices on any one lateral. The squirt height difference over the entire system must not exceed 32% (15% flow difference). Onsite Sewage Systems Use, Monitoring & Maintenance Field Manual - Page: 35

36 Media Filter: Recirculating Sand Filter Inspection frequency: Annually Minimum All checklist items contained within the component must be inspected and reported for each required inspection except for: 1. Average squirt height (optional) These items may be skipped on a complaint or follow-up inspection, however if any deficiencies are identified for any of the questions they must be identified as such on the report. Inspection Minimums & Corrective Action Requirements: Inspection Criteria: Inspection Minimum: Corrective Action: Lateral lines flushed Open Lateral End Cleanouts and flush system by running pump N/A Average squirt height (if performed) (Feet, if other specify): Measure from lateral distribution line Ponding at sand media/(soil interface if applicable) or top of sand media dispersal area (if yes provide comments) (NA if No ports) View ed through monitoring ports Must be corrected immediately. Health District w ill issue Notice To Correct Violation NOTE: The squirt height difference must not exceed 21% (10% flow difference) between orifices on any one lateral. The squirt height difference over the entire system must not exceed 32% (15% flow difference). Onsite Sewage Systems Use, Monitoring & Maintenance Field Manual - Page: 36

37 Media Filter: Sand Filter Inspection frequency: Annually Minimum All checklist items contained within the component must be inspected and reported for each required inspection except for: 1. Average squirt height (optional) These items may be skipped on a complaint or follow-up inspection, however if any deficiencies are identified for any of the questions they must be identified as such on the report. Inspection Minimums & Corrective Action Requirements: Inspection Criteria: Inspection Minimum: Corrective Action: Lateral lines flushed Open Lateral End Cleanouts and flush system by running pump N/A Average squirt height (if performed) (Feet, if other specify): Measure from lateral distribution line Is there ponding present in the low er observation port Visual observation Must be corrected immediately. Health District w ill issue Notice To Correct Violation Is there ponding present in the upper observation port Visual observation NOTE: The squirt height difference must not exceed 21% (10% flow difference) between orifices on any one lateral. The squirt height difference over the entire system must not exceed 32% (15% flow difference). Onsite Sewage Systems Use, Monitoring & Maintenance Field Manual - Page: 37

38 Media Filter: Textile Filter Inspection frequency: Semi-Annually Minimum 1st 2 years. Annually thereafter unless Manufacturer requirements stipulate more frequent inspection requirements. All checklist items contained within the component must be inspected and reported for each required inspection except for: These items may be skipped on a complaint or follow-up inspection, however if any deficiencies are identified for any of the questions they must be identified as such on the report. Inspection Minimums & Corrective Action Requirements: Inspection Criteria: Inspection Minimum: Corrective Action: Average squirt height (if performed) (Feet, if other specify): Visual evaluation N/A Turbidity - NTU - (limit >15) Optional N/A Dissolved Oxygen - mg/l - (limit 2-6) Optional N/A ph (limit 6-9) Optional N/A Sampling results w ithin limits Optional N/A Recirculating Splitter Valve Functioning: Visual Evaluation Must be corrected immediately. Health District w ill issue Notice To Correct Violation Recirculating Splitter Valve Cleaned: Manual cleaning N/A Lateral lines flushed: Manual flushing of lines N/A Bridging or Ponding on the textile sheets Visual Evaluation N/A Textile sheets cleaned Manual Cleaning N/A Pod bottom cleaned Manual Cleaning N/A Unit vented properly: Visual Evaluation Must be corrected immediately. Health District w ill issue Notice To Correct Violation Biotube filter cleaned Manual Cleaning N/A Onsite Sewage Systems Use, Monitoring & Maintenance Field Manual - Page: 38

39 Floats set and functioning properly: Visual Evaluation Must be corrected immediately. Health District w ill issue Notice To Correct Violation Timer settings correct Visual evaluation Must be corrected immediately. Recirculating Pump Amps Optional N/A Health District w ill issue Notice To Correct Violation Discharge Pump Amps Optional N/A Recirculation ratio correct Optional N/A Onsite Sewage Systems Use, Monitoring & Maintenance Field Manual - Page: 39

40 Cleanout Construction Example NOTE: The Cap to the surface must be removable Onsite Sewage Systems Use, Monitoring & Maintenance Field Manual - Page: 40

41 Septic Tank Installation Example NOTE: The effluent screen in the outlet baffle is optional Onsite Sewage Systems Use, Monitoring & Maintenance Field Manual - Page: 41

42 Functioning Septic Tank Example Onsite Sewage Systems Use, Monitoring & Maintenance Field Manual - Page: 42

43 Septic Tank Effluent Filter Example NOTE: The effluent screen in the outlet baffle is optional Onsite Sewage Systems Use, Monitoring & Maintenance Field Manual - Page: 43

44 Pump Tank Time Dosed Install Example NOTE: If the drainfield is located below the pump tank an anti-siphon valve must be installed. Onsite Sewage Systems Use, Monitoring & Maintenance Field Manual - Page: 44

45 Pump Tank Demand Dose Install Example NOTE: If the drainfield is located below the pump tank an anti-siphon valve must be installed. Onsite Sewage Systems Use, Monitoring & Maintenance Field Manual - Page: 45

46 Distribution Box Example Onsite Sewage Systems Use, Monitoring & Maintenance Field Manual - Page: 46

47 Pressure Distribution Cleanout/Monitoring Port Combo Example NOTE: The Cap to the surface must be removable Onsite Sewage Systems Use, Monitoring & Maintenance Field Manual - Page: 47

48 Gravelless Chamber Monitoring Port Example NOTE: The Cap to the surface must be removable Onsite Sewage Systems Use, Monitoring & Maintenance Field Manual - Page: 48

49 Pressure Distribution Cleanout Example NOTE: The Cap to the surface must be removable Onsite Sewage Systems Use, Monitoring & Maintenance Field Manual - Page: 49

50 Septic Tank Retrofitting Step 1 Onsite Sewage Systems Use, Monitoring & Maintenance Field Manual - Page: 50

51 Step 2 Onsite Sewage Systems Use, Monitoring & Maintenance Field Manual - Page: 51

52 Step 3 Onsite Sewage Systems Use, Monitoring & Maintenance Field Manual - Page: 52

53 Step 4 Onsite Sewage Systems Use, Monitoring & Maintenance Field Manual - Page: 53

54 Step 5 Onsite Sewage Systems Use, Monitoring & Maintenance Field Manual - Page: 54

55 Retrofitting a Drainfield NOTE: The lids to the surface must be removable Onsite Sewage Systems Use, Monitoring & Maintenance Field Manual - Page: 55

56 Onsite Sewage Systems Use, Monitoring & Maintenance Field Manual - Page: 56

57 Onsite Sewage Systems Use, Monitoring & Maintenance Field Manual - Page: 57

58 Retrofitting A Gravelless Drainfield NOTE: The lids to the surface must be removable Onsite Sewage Systems Use, Monitoring & Maintenance Field Manual - Page: 58

59 Onsite Sewage Systems Use, Monitoring & Maintenance Field Manual - Page: 59

60 Onsite Sewage Systems Use, Monitoring & Maintenance Field Manual - Page: 60