Mercer County Household Sewage Treatment System Regulations

Transcription

1 Mercer County Household Sewage Treatment System Regulations This local regulation supplements the Ohio Administrative Code rule, which forms the basic installation guidelines for household sewage treatment systems across Ohio. 01 Definitions (A) Infiltrative surface means the contact area where sewage is applied to the soil or sand fill for the purpose of treatment and/or dispersal. (B) In situ soil means soil that has been naturally deposited or formed in its present location with adequate texture, structure and consistence necessary for treatment and/or dispersal, or in the case of reclaimed or filled areas, had had sufficient time to form the texture, structure and consistence necessary for treatment and/or dispersal. (C) Limiting condition means a restrictive soil layer, bedrock, ground water, a perched seasonal high water table or other condition or combination of conditions that severely limit the treatment and/or dispersal of sewage or effluent. (D) NPDES means National Pollutant Discharge Elimination System (E) O&M means Operation and Maintenance (F) Vertical separation distance means the depth from the infiltrative surface of the soil absorption component to a limiting condition. 02 Sewage Treatment System Requirements (A)The daily design flow for an HSTS shall be a peak flow of 120 gallons per day per bedroom. (B)HSTS shall maintain a minimum horizontal isolation distance of 50 from any drinking water well, surface water impoundment, lake, river or perennial stream. (C)HSTS shall not be sited in a 100 year flood plain. (D)HSTS shall not be sited within or impact a jurisdictional wetland subject to a U.S. Army Corps of Engineers 404 permit and/or OEPA 401 certification or within an isolated wetland subject to sections to of the Ohio Revised Code. 1

2 02.1 Site and Soil Evaluation (A)In order to ensure compliance with OAC (B), a detailed site and soil evaluation shall be required prior to approval of any new residential building lot or any new household sewage treatment system design plan. (B)The Board of Health, or its appointed representative, shall conduct a site review for any proposed HSTS installation to complete, or review the completeness of, the site and soil evaluation information required in this rule. The Board of Health, or its appointed representative, shall use the site and soil evaluation information to determine the feasibility of siting an STS. (C)The site and soil evaluation shall include the assessment and documentation of the following: (1) A scaled site drawing adequate to provide the required site and soil evaluation documentation including: (a) Dimensions of the lot or proposed lot (b) Location of soil borings or excavations (c) Existing or proposed dwellings or structures (d) Site disturbances, existing driveways and other hardscapes, and proposed hardscapes or related site disturbances, if known. (e) Location of all private water systems and surface water features on the lot and within 50 of the lot boundary. (2) Record of site and soil characteristics for each soil boring and/or excavation designated in paragraph (C)(1) of this rule using USDA NRCS nomenclature on a form established by Ohio Department of Health, including: (a) Site descriptions: landscape position, slope, vegetation, drainage features, rock outcrops, erosion and other natural features (b) Detailed soil profile descriptions: color, texture, structure, consistence, and the depth of each soil horizon or layer and characterization of all limiting conditions (c) Documentation of any relevant surface hydrology, geologic and hydrogeologic risk factors for the specific site or in the surrounding area that may indicate vulnerability for surface water and ground water contamination. 2

3 (3) Drawings and dimensions on the site plan of at least two locations on the site that have been evaluated and determined to have the capacity for the treatment and/or dispersal of sewage from the proposed dwelling or structures including adequate length parallel to the land contour to accommodate the soil and linear loading rates for the conditions recorded. (4) Identification on the site plan or site drawing of the area for which each soil profile description is representative and designation of any areas with conditions that would prohibit or impact the siting of an HSTS in accordance with applicable rules. (D) An installation permit for an HSTS shall not be approved by the board of health in the absence of an evaluation conducted in accordance with this rule: (1) The board of health shall assure that a site and soil evaluation is conducted in accordance with this rule and shall: (a) Determine compliance with soil absorption requirements in Ohio Administrative Code and section 10 of these rules. (2) The board of health may only waive the site and soil evaluation requirements when soil treatment and/or dispersal is not feasible for an HSTS replacement for an existing dwelling due to the absence of adequate area for sizing the HSTS. (E) The detailed site and soil evaluation shall be performed by a soil evaluator certified by recognized state or national soils professional organizations, such as ARCPACS, or the Association of Ohio Pedologists. The site and soil evaluation must be performed according to procedures established by Ohio Department of Health, and soil evaluation information must be reported on the Ohio Department of Health Site and Soil Evaluation for Sewage Treatment and Dispersal form. 3

4 03 Installation Permit Application Requirements (A)Each application for installation permit must include a scaled layout plan including all details relevant to HSTS installation, including but not limited to: (1) A scaled site plan showing the following: (a) Locations of existing or proposed structures, driveways or other site disturbances (b) Designated HSTS location along contours (c) Horizontal isolation distances (d) Designated area for complete relocation and replacement of the HSTS as required under Ohio Administrative Code (I). (e) North directional arrow (2) Written details on daily design flow, selected loading rates based on the site and soil evaluation, system configuration with absorption area dimensions, and, if applicable, pump selection information and pressure distribution network description and calculations. (3) Product information and written description of materials and system components including size of all tanks and distribution component materials including mechanical distribution and diversion mechanisms. (4) Any additional information requested by the Board of Health related to components, materials, and installation or O&M specifications. (B)For the purpose of verifying daily design flow, a floor plan of the home to be served by the HSTS must be included with the permit application. 4

5 04 Installation Approval (A)In addition to a final inspection made by the Mercer County Health Department, prior to system approval the installer shall complete an as-built record. The installer shall provide the as-built record at the time of final inspection. In cases where the system is not fully installed at the time of inspection, the installer must submit a completed as-built record to the MCCCHD within 30 days of final inspection. The as-built record shall include: (1) A legible record on 8 ½ inch by 11 inch or larger pages with copies provided to the owner and to the Board of Health. Use of layout plan documents may be acceptable (2) Any changes from the approved layout plan. A change in location of the HSTS shall not be made without prior approval by the board of health. (3) A designated vertical and horizontal benchmark with its location clearly marked at the site. (4) Plan view drawing with elevations for installed HSTS components relating to the designated vertical and horizontal benchmark. (5) Any additional information requested by the Board of Health related to components, materials, and installation or O&M specifications. (6) The as-built drawing shall include a statement by the registered installer indicating that the STS was installed in accordance with all applicable rules and plan specifications. 05 Household Sewage Treatment System Contractors (A)An installer, septage hauler, or service provider shall obtain a surety bond which provides coverage for all work performed on an HSTS in Mercer County. (1) The surety bond shall establish a contractual relationship between the principal and the surety, and shall be executed by the applicant as principal and a surety company authorized to do business in the state of Ohio as surety. (2) The surety bond shall be for the benefit of any aggrieved party for damages incurred as a result of a violation of this chapter. For purposes of this rule aggrieved party means the Mercer County Board of Health, property owner or agent of the property owner who contracts with an installer, sewage tank cleaner or service provider and whose STS is not installed serviced, maintained or abandoned in compliance with all applicable rules. 5

6 (3) The surety bond shall be issued to provide insurance coverage for the calendar year of the registration application for any work performed in Mercer County. The surety bond shall provide that the aggregate liability of the surety for any and all breaches of the conditions of the bond shall in no event exceed the penal sum of the bond for each calendar year for which the bond is issued. (4) Any person who alleges to be an aggrieved party shall give written notification to the surety, the Mercer County Board of Health, and the installer, septage hauler or service provider as applicable, within two years of the date of completion of the work on the HSTS. The Board of Health may conduct an investigation as necessary to determine if a violation of this chapter has occurred. (5) An installer and service provider shall maintain a surety bond of not less than twenty-five thousand dollars for each category of registration. A septage hauler shall maintain a surety bond of not less than ten thousand dollars. (B) Except as provided in section (D) of this rule, registration of installers, service providers and septage haulers is required. Such registration shall expire annually on December 31. Effective January 1, 2008, any installer who wishes to obtain registration in Mercer County must: (1) Show proof of required surety bond coverage for each category of registration. (2) Submit applicable registration fee and completed application form. (3) Comply with section 04(A) of this rule regarding submission of as-built Records. (C) Registration of service providers shall include demonstration of compliance with any training, qualification or certification conditions required for a component or system, and registered service providers shall: (1) Conduct routine O&M services on schedule and according to requirements. (2) Provide to the owner and the Mercer County Celina City Health Department a report of the service conducted including the date of service and a notation of any evidence of clear water infiltration, STS component deterioration or other problem conditions. (3) Comply with any reporting requirements established by the Board of Health, including wastewater effluent testing required by NPDES General Permit OHK (D) A person installing an HSTS for his/her own personal residence is exempt from registration and registration fee, liability insurance, and surety bond requirements. 6

7 06 Septic Tank Requirements (A)The septic tank outlet baffle shall be fitted with a vented tee or baffle including an effluent filter device that retains solids greater than 1/16 of an inch in size. 07 Soil Absorption Requirements (A)Soil absorption components shall maintain a vertical separation distance of at least. six (6) inches to seasonal water between six (6) and eighteen (18) inches, required in-situ soil within infiltrative distance. (B)A minimum depth of 6 (six) inches of in situ soil must be maintained between the infiltrative surface of the absorption component and the limiting conditions listed above. (C) For replacement systems only, vertical separation distances may be decreased to zero (0) inches, with pretreated effluent (<1,000 cfu/100 ml). (D)Soil absorption components shall be sized using the Tyler table of linear loading rates included with these rules. (E) Soil moisture conditions shall be evaluated immediately prior to installation of any soil absorption component. Installation shall not proceed when there is a risk of smearing or compaction as evidenced by a deformability test, commonly referred to as ribboning. (F)Use of alternative absorption systems and components shall be approved by the Ohio Department of Health, and shall be installed according to specifications and instructions established by the Mercer County Board of Health 08 Leaching Tile Field Requirements (A)Leaching trenches shall have a minimum width of 18 and shall not exceed 36 in width. (B)A leaching trench bottom shall be level along its length and shall follow the natural surface contour maintaining the specified trench depth along the entire length. The trench depth shall be determined based on the required vertical separation distance to the limiting condition. (C)Header lines shall be constructed of solid pipe. (D)Distribution boxes, constructed of a non-corrosive material such as fiberglass or poly, and not concrete, shall be utilized to ensure uniform distribution of effluent to the trenches. 7

8 09 Operation and Maintenance (A) As required by Ohio Administrative Code (I), any installation of an HSTS, or type 2, 3, or 4 grey water recycling system requires an approved and valid operating permit from the Board of Health. (B) Terms and conditions of operating permits for non-discharging systems are to include: 1. A statement of attestation by system operator that they have obtained and understand the educational information provided to them by the health department upon approval of their system, regarding proper operation of their system, and 2. Maintenance of system, which is to require the septic tank to be inspected and its contents to be pumped out by a licensed septage hauler every 10 years at the very most, and 3. Renewal of the operating permit at the end of every 10 year period after the issuance of the initial permit and/or renewal permit. All maintenance terms must be met prior to renewal. (C) Terms and conditions of operating permits for discharging systems or any systems requiring a service contract by state regulations or state special device approvals are to include: 1. Provision of a valid contract with a licensed service provider which sets forth maintenance and monitoring frequency of once per year if required by NPDES permit, and 2. Renewal of operating permit on an annual basis per calendar year, expiring December 31 of each year. Renewal is conditional upon receipt by health department of receipt from service provider showing that the system is functioning properly. Adopted: July 11, 2007 (Emergency Procedure) Amended: January 6, 2010, December 10,