reglab/statecodes huggingface dataset:
Alabama Administrative Code › Title 420 - ALABAMA STATE BOARD OF HEALTH › Chapter 420-3-1 - ONSITE SEWAGE TREATMENT AND DISPOSAL › Tanks, Advanced Treatment, And Pumps › Section 420-3-1-.24 - Abandonment Of A Sewage Tank

Current through Register Vol. 42, No. 9, June 28, 2024
When the use of a sewage tank is discontinued; or when the
				  system cannot be made to comply with these rules, the tank shall be abandoned,
				  and its further use prohibited. An abandoned tank shall be pumped out by an
				  AOWB-licensed pumper. An empty tank may be removed at the property owner's
				  option, or to make room for new system components. If no replacement component
				  is intended, the hole left by the removal of a tank shall be filled with sand
				  or soil. An mpty tank left in· place shall be filled with sand or soil.
				  The bottom of the tank may be ruptured.
Previous Rule .35 was renumbered .24 per certification
					 published December 30, 2022; effective February 13,
					 2023.
Authors:
Thad Pittman, Matthew Conner, Ken
					 Stephens, Bob Bright
Statutory Authority:
Code of Ala.
					 1975
, §§
											22-2-2(4);
					 22-2-2(6);
					 22-10-1,
et
					 seq
.; 22-26-1,
et seq
.
Alabama Administrative Code › Title 420 - ALABAMA STATE BOARD OF HEALTH › Chapter 420-3-1 - ONSITE SEWAGE TREATMENT AND DISPOSAL › Tanks, Advanced Treatment, And Pumps › Section 420-3-1-.25 - Advanced Treatment Required

Current through Register Vol. 42, No. 9, June 28, 2024
(1) The following systems, sites, and/or
				conditions shall require advanced treatment:
(a) Any system with a design flow of over
				4,000 gpd of sewage.
(b) Any system
				that is producing high strength sewage of over 1,800 gpd shall treat to
				secondary effluent standards under a Performance Permit. If the average
				strength is 3,000 mg/1 Biological Oxygen Demand (BOD) or greater, ADPH may
				consider treating to primary effluent standards under a Performance Permit if:
1. There are no environmental or health
				ramifications.
2. The field shall
				be sized in accordance with
				420-3-1-.55 Gravel Field Standard
				EDF Sizing for Establishments except that the treated BOD loading shall be
				used.
(c) Sites where
				depth to ASHES from the natural ground surface is less than 6 inches.
(d) Sites where depth from natural ground
				surface to hard bedrock is less than 12 inches.
(e) Soils with an estimated or actual
				percolation rate of less than 5 MPI.
(f) Soils where the estimated or actual
				percolation rate is greater than 240 MPI.
(g) Sites containing mine spoil at the
				natural ground surface to a depth of at least 48 inches within the proposed EDF
				area at the time of the site evaluation.
(h) When a pad or bed is used as described in
				420-3-1-.59 Pad and Bed
				Construction Specifications.
(i)
				When drip irrigation is used as described in
				420-3-1-.62 Drip Irrigation
				Requirements.
Alabama Administrative Code › Title 420 - ALABAMA STATE BOARD OF HEALTH › Chapter 420-3-1 - ONSITE SEWAGE TREATMENT AND DISPOSAL › Tanks, Advanced Treatment, And Pumps › Section 420-3-1-.26 - Advanced Treatment System (ATS) Specifications

Current through Register Vol. 42, No. 9, June 28, 2024
(1) A person proposing to market a
				proprietary advanced treatment system (ATS) shall submit ADPH Form CEP-13. The
				application shall include the following information:
(a) Documentation that the ATS has been
				certified as meeting the appropriate NSF, Committee for Standardization (CEN),
				or the Bureau de normalisation du Quebec (BNQ) Standard.
(b) Design hydraulic loading capacity
				(gallons per day) and design organic loading capacity (pounds of BOD per
				day).
Alabama Administrative Code › Title 420 - ALABAMA STATE BOARD OF HEALTH › Chapter 420-3-1 - ONSITE SEWAGE TREATMENT AND DISPOSAL › Tanks, Advanced Treatment, And Pumps › Section 420-3-1-.27 - OSS/EDS Requiring Pumping Of Effluent

Current through Register Vol. 42, No. 9, June 28, 2024
(1) The pump specified for an OSS/EDS shall:
(a) Be capable of passing minimum one-half
				(%) inch spherical solids, in the event of filter failure. However, if an
				engineer, for design considerations, specifies a pump that will not pass
				one-half (1/2) inch solids, adequate precautions shall be taken to prevent
				one-half (1/2) inch or larger solids from entering the pump. In this case, at a
				minimum, the pump system shall not be placed in the primary septic tank but
				shall be placed in a secondary pump chamber or in a filtered pump
				vault.
(b) Be capable of being
				submerged.
(c) Produce sufficient
				capacity at the calculated total dynamic head (TOH).
(d) Have a variable level on-off pump
				activation device that is adjustable to meet specific application
				requirements.
(e) Be rated for
				effluent service by the manufacturer.
(f) Provisions shall be made for easy removal
				of the pump.
(g) Have a full flow
				shut-off valve installed.
(h) Have
				a check valve to prevent reverse drainage back into the pump chamber.
Alabama Administrative Code › Title 420 - ALABAMA STATE BOARD OF HEALTH › Chapter 420-3-1 - ONSITE SEWAGE TREATMENT AND DISPOSAL › Disposal Methods And Criteria For Special Sites › Section 420-3-1-.28 - Pit Privies

Current through Register Vol. 42, No. 9, June 28, 2024
(1) In
				remote areas of the state or in certain transient or temporary locations, pit
				privies may be utilized. Due to their limited capacities, these systems shall
				be restricted to receive excreta only. Typical locations of pit privies are
				rural camps, seasonal recreation areas, public gatherings, and similar
				transient or temporary locations. Conditions that prohibit the use of a pit
				privy are:
(a) Water under pressure is
				present.
(b) Site limiting
				conditions (Table 7 and Table 18) and soil restrictions (ASHES < 78
				inches).
Alabama Administrative Code › Title 420 - ALABAMA STATE BOARD OF HEALTH › Chapter 420-3-1 - ONSITE SEWAGE TREATMENT AND DISPOSAL › Disposal Methods And Criteria For Special Sites › Section 420-3-1-.29 - Composting, Incinerating, And Portable Toilets

Current through Register Vol. 42, No. 9, June 28, 2024
(1)
Composting Toilets.
Composting toilets may be used to handle waste for which they are designed. If
				there is other sewage generated at this site that the composting toilet is not
				designed to handle, then an appropriate OSS shall be used.
(a) A composting toilet shall be certified by
				NSF or an organization that is ANSI-certified to judge compliance with the
				appropriate NSF Standard.
(b) The
				disposal of liquid from a composting toilet shall be to either a public or
				private sewer system.
Alabama Administrative Code › Title 420 - ALABAMA STATE BOARD OF HEALTH › Chapter 420-3-1 - ONSITE SEWAGE TREATMENT AND DISPOSAL › Disposal Methods And Criteria For Special Sites › Section 420-3-1-.30 - Innovative EDS

Current through Register Vol. 42, No. 9, June 28, 2024
(1) An
				Innovative EDS may be used for dwellings, not part of a Large-Flow Development,
				in situations where:
(a) The site has vertic
				soil characteristics or a permeability of greater than 240 MPI. For the minimum
				number of soil tests required, see Table 19.
(b) Design flow shall not exceed 1,800 GPD
				per lot.
(c) Slope within the
				discharge area shall not exceed 12 percent.
Alabama Administrative Code › Title 420 - ALABAMA STATE BOARD OF HEALTH › Chapter 420-3-1 - ONSITE SEWAGE TREATMENT AND DISPOSAL › Disposal Methods And Criteria For Special Sites › Section 420-3-1-.31 - Recreational Vehicle Parks

Current through Register Vol. 42, No. 9, June 28, 2024
(1) For
				purposes of regulating sewage disposal, a site may be designated a Recreational
				Vehicle (RV) Park by the LHD if it meets the following conditions:
(a) The RVs shall be mobile,
(b) The lots and all appurtenances and
				utilities, including the OSS, shall be owned and operated by a responsible
				person as defined by these rules.
1. The
				responsible person shall provide sewage treatment and disposal or a sanitary
				station into which RVs may discharge waste for ultimate disposal off-site.
				There shall be one sanitary station for wastewater disposal for every 50
				vehicles that the park is designed to accommodate.
2. The location and design of a sanitary
				station or OSS shall be permitted by the LHD. If ultimate disposal is to be
				through an OSS permitted by the LHD, the designer shall take into account the
				chemicals that are used in RV holding tanks. The design of sanitary dump
				stations shall include a sanitary method of transfer from the RV to the
				station.
3. The design for each
				sanitary station shall be based on
				420-3-1-.23 Holding Tank
				Requirements sections (4) through (7). The park shall not take in more RVs than
				it was designed to accommodate at any one time. The sanitary stations shall
				only receive sewage.
4. Except for
				the onboard sewage storage tank built into the RV, there shall be no other form
				of sewage disposal or storage in the park other than that approved by the
				LHD.
Alabama Administrative Code › Title 420 - ALABAMA STATE BOARD OF HEALTH › Chapter 420-3-1 - ONSITE SEWAGE TREATMENT AND DISPOSAL › Repairs And Relocations › Section 420-3-1-.32 - Repair And Relocation Of An Existing OSS/EDS

Current through Register Vol. 42, No. 9, June 28, 2024
(1) The LHD may investigate reports of a
				failing or an inadequate OSS/EDS. The LHD shall require the owner or
				responsible person to abate an unsanitacy condition caused by a failing OSS/EDS
				or an unpermitted surface discharge of sewage by repairing or replacing the
				system or components of the system as required.
(2) If the BOD or the flow has not changed,
				the action shall be a repair as defined by these rules.
(3) Before an existing OSS/EDS may be
				repaired, the responsible person shall apply for and obtain a permit to repair
				the OSS/EDS from the LHD.
(a) No permit is
				required if the work performed meets these rules' definition of
				maintenance.
(b) Verbal
				authorization to repair a conventional Small-Flow system may be given by the
				LHD. The verbal repair authorization shall be documented in the LHD file.
				However, an application for the Permit to Repair shall be submitted to the LHD
				within 10 days of the date that the verbal authorization was given.
Alabama Administrative Code › Title 420 - ALABAMA STATE BOARD OF HEALTH › Chapter 420-3-1 - ONSITE SEWAGE TREATMENT AND DISPOSAL › Repairs And Relocations › Section 420-3-1-.33 - Evaluation Of An Existing OSS/EDS

Current through Register Vol. 42, No. 9, June 28, 2024
(1) When requested by a responsible person or
				a lending institution representing the seller or buyer, an evaluation of an
				existing OSS/EDS may be performed by the LHD. The evaluation of an existing
				OSS/EDS does not express or imply any guarantee that theOSS/EDS will function
				satisfactorily.
(2) Evidence that
				an existing OSS was installed without the issuance of a Permit to Install on or
				after March 18, 1982, may be reason for the LHD to decline to evaluate the
				existing OSS. The LHD may require a professional site evaluation and
				application for Permit to Install (Repair) be submitted by the responsible
				person. The LHD may require the existing OSS to either be brought into
				compliance with current rules or require a new OSS.
(3) Before completing the evaluation, the
				responsible person or the lending institution shall provide evidence that the
				septic tank of an existing OSS/EDS has been pumped within the last 3 years by
				an AOWB licensed pumper.
(4)
				Similar inspection services, such as those provided by a home inspector or an
				AOWB licensee, shall not imply that the service was provided under authority of
				these rules, nor shall they imply that the system complies with these
				rules.
Previous Rule .48 was renumbered .33 per certification
					 published December 30, 2022; effective February 13, 2023.
Authors:
Thad Pittman, Lem Burell, Matthew
					 Conner, Ken Stephens, Bob Bright
Statutory Authority:
Code of Ala.
					 1975
, §§
											22-2-2(4);
					 22-2-2(6);
					 22-10-1,
et
					 seq
.; 22-26-1,
et seq
.
Alabama Administrative Code › Title 420 - ALABAMA STATE BOARD OF HEALTH › Chapter 420-3-1 - ONSITE SEWAGE TREATMENT AND DISPOSAL › Certifications And Recording Requirements › Section 420-3-1-.34 - Certifications

Current through Register Vol. 42, No. 9, June 28, 2024
(1) Prior to
				issuance of the Permit to Install (Repair), the soil professional or PHESS
				shall certify that the soil tests are true and accurate by signing the
				certification in ADPH Form CEP-2/3 Part C.
(2) For a permit application for Small-Flow
				Developments or Systems, the responsible person shall sign the certification in
				ADPH Form CEP-2. For a permit application for Large-Flow Developments or
				Systems, the responsible person shall sign the certification in ADPH Form
				CEP-3.
(3) For an Engineered OSS or
				EDS, the engineer (see
				420-3-1-.09 Engineer Design
				Required) shall certify that the design of the system will meet applicable
				performance standards by signing the certifications in ADPH Form CEP-2 or
				CEP-3, as appropriate.
(4) For a
				Conventional OSS, the soil professional or the PHESS shall certify the
				information outlined in ADPH Form CEP-2 or CEP-3 is complete, true, and
				correct.
(5) Prior to issuance of
				the Approval for Use, the installer shall certify the installation by
				submitting ADPH Form CEP-5 within 3 business days of the
				installation.
(6) Prior to issuance
				of the Approval for Use, for a system designed by an engineer as required by
				420-3-1-.09 Engineer Design
				Required, the engineer shall certify the installation by submitting ADPH Form
				CEP-6.
Previous Rule .49 was renumbered .34 per certification
					 published December 30, 2022; effective February 13,
					 2023.
Author:
Thad Pittman, Matthew Conner, Ken
					 Stephens, Bob Bright
Statutory Authority:
Code of Ala.
					 1975
, §§
											22-2-2(4);
					 22-2-2(6);
					 22-10-1,
et
					 seq
.; 22-26-1,
et seq
.
Alabama Administrative Code › Title 420 - ALABAMA STATE BOARD OF HEALTH › Chapter 420-3-1 - ONSITE SEWAGE TREATMENT AND DISPOSAL › Certifications And Recording Requirements › Section 420-3-1-.35 - Professional Signatures And Seals

Current through Register Vol. 42, No. 9, June 28, 2024
It is the responsibility of any person preparing or
				  submitting an application to ensure that all studies, engineering reports,
				  plans and specifications, soils reports, and other technical submittals
				  required by state lawor these rules, are prepared according to applicable
				  licensure laws and regulations, and that they include the professional's
				  signature and seal as required by the applicable licensure
				  laws.
Previous Rule .52 was renumbered .35 per certification
					 published December 30, 2022; effective February 13,
					 2023.
Author:
Thad Pittman
Statutory Authority:
Code of Ala.
					 1975
, §§
											22-2-2(4);
					 22-2-2(6);
					 22-10-1,
et
					 seq
.; 22-26-1,
et seq
.
Alabama Administrative Code › Title 420 - ALABAMA STATE BOARD OF HEALTH › Chapter 420-3-1 - ONSITE SEWAGE TREATMENT AND DISPOSAL › Certifications And Recording Requirements › Section 420-3-1-.36 - Recording Requirements

Current through Register Vol. 42, No. 9, June 28, 2024
(1) The
				LHD shall sign a surveyed plat, if applicable, to be recorded when the
				appropriate ADPH application forms have been completed and approved.
(2) A plat to be recorded for lots that will
				have an OSS shall have one of the following statements on the plat:
(a) For lots with individual systems on each
				lot it shall read:
"The lot(s) on this plat are subject to approval or deletion
				  by the (name of county) LHD. No representation is made that anyloton this plat
				  will accommodate an Onsite Sewage System (OSS). The appropriateness of a lot
				  for wastewater sewage treatment and disposal shall be determined when an
				  application is submitted. If permitted, the lot approval may contain certain
				  conditions which restrict the use of the lot or obligate owners to special
				  maintenance and reporting requirements, and these are on file with said health
				  department and are made a part of this plat as if set out here on."
(b) For lots on a Cluster
				Wastewater System it shall say:
"The Health Department signature is for recording purposes
				  and signifies that the Department is aware of this development and sees no
				  obvious impediments to the planned sanitary sewer system serving the lots as it
				  was presented."
(c) When
				requested, for any system not regulated by ADPH, it shall say:
"This Health Department signature is for recording purposes
				  only."
(d) These statements
				may be modified at the discretion of the LHD.
(e) All the items that are required on the
				surveyed plat on record in the LHD do not have to be on the recorded plat so
				long as the statements above are on the recorded plat.
Alabama Administrative Code › Title 420 - ALABAMA STATE BOARD OF HEALTH › Chapter 420-3-1 - ONSITE SEWAGE TREATMENT AND DISPOSAL › Site Evaluation › Section 420-3-1-.37 - Site Limitation Determination

Current through Register Vol. 42, No. 9, June 28, 2024
(1) Site evaluations may be performed using
				percolation tests, soil mapping, soil morphology, or the unified system as
				described in these rules.
(2) The
				site evaluation shall be completed by one of the following who shall be
				licensed, registered, and certified in the state of Alabama: an engineer, land
				surveyor, geologist, or soil classifier; and in some cases, a PHESS. All sites
				on which an OSS/EDS is proposed shall be evaluated and rated using the
				following six factors:
(a) Soil permeability:
				see 420-3-1-.39 Soil
				Permeability.
(b) Depth to Average
				Seasonal High Extended Saturation (ASHES): see
				420-3-1-.40 Soil Testing Depth
				Requirements and
				420-3-1-.42 Soil Restriction
				Depth and Vertical Separation.
(c)
				Depth to bedrock or other restrictive layer or horizon: see
				420-3-1-.40 Soil Testing Depth
				Requirements and
				420-3-1-.42 Soil Restriction
				Depth and Vertical Separation.
(d)
				Slope and landform limitations: see
				420-3-1-.38 Slope and Landform
				Limitations.
(e) Potential for
				frequent flooding: see
				420-3-1-.38 Slope and Land. form
				Limitations.
(f) Presence of
				surface saturated soils: see
				420-3-1-.38 Slope and Landform
				Limitations.
Alabama Administrative Code › Title 420 - ALABAMA STATE BOARD OF HEALTH › Chapter 420-3-1 - ONSITE SEWAGE TREATMENT AND DISPOSAL › Site Evaluation › Section 420-3-1-.38 - Slope And Landform Limitations

Current through Register Vol. 42, No. 9, June 28, 2024
(1) EDF sites with slopes greater than 25
				percent require an Engineer Design. EDF sites with slopes greater than 40
				percent are considered unsuitable for the installation of an OSS. Table 8 shall
				be consulted for the required trench spacing and required amount of cover
				needed for a Conventional OSS.
(2)
				Slope limitation ratings are found in Table 18. See
				420-3-1-.51 Lot Modification -
				Planned and Unplanned, for options for manipulating steep slopes to overcome
				severe or extreme ratings.
(3)
				Prior to any cutting and/or filling operations, refer to
				420-3-1-.61 Controlled Fill Mound
				System, and
				420-3-1-.51 Lot
				Modification-Planned and Unplanned.
(4) Drainage ways shall not be filled for the
				purpose of creating an acceptable EDF or REDF. See Drainage Way and Table
				4.
(5) Sites with caves, sinkholes,
				and similar depressions within 300 feet of the EDF or REDF that are likely to
				be impacted by the sewage from the system shall be rated extreme. The LHD may
				consider allowing OSS components in locations less than 300 feet from these
				features upon receipt of a report prepared and certified by a geologist. This
				report shall specifically address the susceptibility of contamination of both
				surface and groundwater by an OSS based on the existing conditions. However, no
				part of the system shall be allowed within 50 feet of the rim on any
				sinkhole.
(6) Any site rated
				extreme because of wetlands, hydric soils, or ponding is considered unsuitable
				for an EDF except when the conditions of
				420-3-1-.61 Controlled Fill Mound
				System, and
				420-3-1-.51 Lot Modification -
				Planned and Unplanned, apply. Frequently flooded areas are considered
				unacceptable for an OSS.
(7) Sites
				that are in a flood easement are considered extreme and are unsuitable for an
				OSS/EDS.
(8) Natural and artificial
				landforms such as filled areas with excessive voids (including mine spoil
				areas) require special consideration because of the high potential for
				contamination.
Previous Rule .62 was renumbered .38 per certification
					 published December 30, 2022; effective February 13,
					 2023.
Authors:
David Gray, Boyd Rogers, Richard
					 Smith
Statutory Authority:
Code of Ala.
					 1975
, §§
											22-2-2(4);
					 22-2-2(6);
					 22-10-1,
et
					 seq
.; 22-26-1
et seq
.
Alabama Administrative Code › Title 420 - ALABAMA STATE BOARD OF HEALTH › Chapter 420-3-1 - ONSITE SEWAGE TREATMENT AND DISPOSAL › Site Evaluation › Section 420-3-1-.39 - Soil Permeability

Current through Register Vol. 42, No. 9, June 28, 2024
(1)
				Permeability shall be determined as part of a site evaluation by one or more of
				the following methods: The percolation testing method described in
				420-3-1-.43 General Percolation
				Procedure through
				420-3-1-.46 Extended Saturation
				Procedure.
(a) The unified method described in
				420-3-1-.47 Unified System for
				Site Evaluation.
(b) The soil
				morphology method described in
				420-3-1-.48 Soil Morphology
				Method.
(c) The detailed soil
				mapping method described in
				420-3-1-.49 Soil Maps.
(d) The percolation method, when used, shall
				be performed and certified by an engineer, land surveyor, geologist, or soil
				classifier, in accordance with their respective licensing board
				rules.
Alabama Administrative Code › Title 420 - ALABAMA STATE BOARD OF HEALTH › Chapter 420-3-1 - ONSITE SEWAGE TREATMENT AND DISPOSAL › Site Evaluation › Section 420-3-1-.40 - Soil Testing Depth Requirements

Current through Register Vol. 42, No. 9, June 28, 2024
(1) The correct testing depth to determine
				permeability shall be the least permeable horizon that is at or within 18
				inches below the EDF bottom or EDS discharge area. If a restriction is present,
				the correct testing depth shall be the least permeable horizon that is at or
				within the required MVS depth below the EDF bottom. Percolation tests maybe
				conducted at different depths to aid in this determination. In no case shall
				the test depth be less than 12 inches.
(2) Sites where the EDF bottom will be
				installed above the natural ground surface shall be evaluated at a depth of 12
				inches from the natural ground surface, prior to adding fill. See
				420-3-1-.61 Controlled Fill Mound
				Systems.
(3) A site having more
				permeable soils located below slowly permeable clay layers (but not a
				restrictive layer or horizon, see Table 7 footnote 4), and which can still meet
				the required separation distance above the ASHES or other limiting layers, may
				be considered for an EDF. However, trench bottoms shall not exceed 60 inches
				below the natural surface.
(4) The
				LHD may require observation pits where questions arise about soil conditions or
				where soils are difficult to evaluate with manually operated
				equipment.
Previous Rule .64 was renumbered .40 per certification
					 published December 30, 2022; effective February 13,
					 2023.
Authors:
David Gray, John Clement, Boyd
					 Rogers, Richard Smith
Statutory Authority:
Code of Ala.
					 1975
, §§
											22-2-2(4);
					 22-2-2(6);
					 22-10-1,
et
					 seq
.; 22-26-1
et seq
.
Alabama Administrative Code › Title 420 - ALABAMA STATE BOARD OF HEALTH › Chapter 420-3-1 - ONSITE SEWAGE TREATMENT AND DISPOSAL › Site Evaluation › Section 420-3-1-.41 - Minimum Testing Standards And Interpretations

Current through Register Vol. 42, No. 9, June 28, 2024
(1) See Table 19 for the minimum number of
				tests required per site.
(2) Soil
				tests shall be in the proposed EDF or discharge area, and in the proposed REDF
				when required, except for soµ mapping which shall be performed in
				accordance with
				420-3-1-.49 Soil Maps. The method
				by which each test is located shall be specified.
(3) Multiple testing locations for the same
				area shall be a minimum of 30 feet apart and shall be evenly spaced to
				represent the EDF or discharge area. Each boring and its respective percolation
				hole shall be 5 to 15 feet apart.
(4) When two tests are performed in the EDF
				and they produce significantly different results (more than 20 MPI or the
				extreme of another soil group), one of the following shall be done:
(a) Relocate the proposed EDF area and retest
				or reevaluate as necessary to confirm that the site is consistent.
(b) Calculate the amount of EDF using the
				highest result(s).
(c) Soil
				evaluators may average the test results on projects where four soil tests have
				been conducted. The averaged test results can be representative of the site
				conditions.
Alabama Administrative Code › Title 420 - ALABAMA STATE BOARD OF HEALTH › Chapter 420-3-1 - ONSITE SEWAGE TREATMENT AND DISPOSAL › Site Evaluation › Section 420-3-1-.42 - Soil Restriction Depth And Vertical Separation

Current through Register Vol. 42, No. 9, June 28, 2024
(1) The MVS between the deepest EDF bottoms
				and any noted restriction as defined by these rules shall be required. See
				Table 7 for specific depth requirements.
(2) The depth to the ASHES is approximated by
				the shallowest occurrence of contemporary redoximorphic features containing 2
				percent or more chroma 2 or less (Munsell or equivalent) colors (See Table 7
				footnote 4). MVS is based on chroma 2 or less colors; however, saturation often
				occurs above these gray colors for shorter durations indicated by the
				accumulation of contemporary oxides. The EDF bottoms shall be at least the same
				elevation or shallower than the top of this zone. If there is sufficient
				evidence to suspect saturation occurs even higher than any obvious redox
				features for a significant period, groundwater monitoring may be required for a
				minimum of one normal wet season.
(3) When the soil professional performing the
				evaluation encounters difficulty in determining the depth of the ASHES, he or
				she should consult with the LHD.
(4) When actual monitoring is required to
				make a determination of the ASHES, a proposed plan shall be submitted to the
				LHD and ADPH for review and approval.
(5) The LHD or ADPH reserves the right to
				make the final determination concerning ASHES and useable soil depth.
(6) Other soil features that may occur in or
				below the soil and restrict the downward movement of water or hinder treatment
				of effluent shall be considered a restrictive layer or horizon. These features
				may include, but are not limited to, the following:
(a) Bedrock layers that are tilted and
				variable in depth from the surface shall be treated as restrictive when the
				consistent mass of hard or soft bedrock exceeds 50 percent by volume.
(b) Some parent material layers with poor or
				massive structure and without adequate conducting pores (slowly or very slowly
				permeable).
(c) Fragipans or
				similar features with inherent dense or brittle qualities.
(d) A layer or layers of fill or mine spoil
				that has less than 50 percent soil size particles, or greater than 50 percent
				coarse fragments with 2 percent or more empty voids between fragments, or
				greater than 75 percent coarse fragments larger than gravel size.
(e) One or more layers of fill or mine spoil
				that have been compacted.
Alabama Administrative Code › Title 420 - ALABAMA STATE BOARD OF HEALTH › Chapter 420-3-1 - ONSITE SEWAGE TREATMENT AND DISPOSAL › Site Evaluation › Section 420-3-1-.43 - General Percolation Procedure

Current through Register Vol. 42, No. 9, June 28, 2024
(1) A site may be evaluated using the
				percolation method by first boring a hole or digging an observation pit to
				establish the depth of the ASHES or other restrictive layer or horizon. The
				test hole depth is determined by
				420-3-1-.40 Soil Testing Depth
				Requirements. For the minimum number of tests required see Table 19.
(2) A valid percolation test shall be
				performed in accordance with this rule and
				420-3-1-.40 Soil Testing Depth
				Requirements,
				420-3-1-.44 Soil Boring Procedure
				(for Percolation Testing), and
				420-3-1-.45 Percolation Test
				Procedure.
(3) For Small-Flow
				single-family dwellings, a minimum of two percolation tests shall be required
				for each EDF, and one percolation test shall be performed in the REDF for lots
				of less than 15,000 sq. ft. See Table 17 for exceptions. The test holes shall
				be located no closer than 30 feet apart. The test holes shall be evenly spaced
				to represent the EDF area.
(4) For
				Large-Flow systems and establishments, a minimum of two percolation tests and
				two borings shall be required for the initial 600 gpd. One percolation and one
				boring shall be required for each additional 600 gpd of flow or portion thereof
				thereafter. The test holes shall be evenly spaced to represent the EDF
				area.
(5) Percolation tests shall
				not be conducted in stump holes, large root channels, fractured bedrock, or in
				association with any other factors that might cause test results to be
				non-representative of the actual site conditions. No soil additives shall be
				used in the percolation testing process.
Previous Rule .67 was renumbered .43 per certification
					 published December 30, 2022; effective February 13,
					 2023.
Author:
David Gray, Boyd Rogers, Richard
					 Smith
Statutory Authority:
Code of Ala.
					 1975
, §§
											22-2-2(4);
					 22-2-2(6);
					 22-10-1,
et
					 seq
.; 22-26-1
et seq
.
Alabama Administrative Code › Title 420 - ALABAMA STATE BOARD OF HEALTH › Chapter 420-3-1 - ONSITE SEWAGE TREATMENT AND DISPOSAL › Site Evaluation › Section 420-3-1-.44 - Soil Boring Procedure For Percolation Testing

Current through Register Vol. 42, No. 9, June 28, 2024
(1) A minimum of two soil borings or two
				observation pits shall be dug from 5 to 15 feet from the anticipated
				percolation test location in accordance with the following:
(a) Soil borings shall be dug to a minimum
				depth of 48 inches to determine the restrictive horizon depth, unless prevented
				by bedrock or an additional 6 inches once ASHES is encountered. The soil boring
				or observation pit shall be deeper than the intended trench depth by the
				required MVS. The method by which each test is located shall be specified.
(b) The minimum diameter of soil
				borings shall be 2.5 inches. Soil material from a boring shall be laid out in a
				manner consistent with the soil's natural order. Power augers or similar
				equipment that uses the Archimedes screw principle shall not be used for soil
				evaluation.
(c) Observation pits
				are required for Large-Flow Developments. Pits shall be a minimum of 60 inches
				deep unless prevented by hard bedrock. Pits should be constructed in such a
				fashion as to be easily accessible for the evaluator. Pits are excluded from an
				organized layout of the removed soil material.
(d) The depth from the surface to the
				groundwater or saturated soil shall be reported if encountered.
(e) The depth from the surface to ASHES shall
				be reported if encountered.
(f) The
				depth from the surface to any other restrictive layer or horizon shall be
				identified and reported. See
				420-3-1-.42 Soil Restriction
				Depth and Vertical Separation. If there is uncertainty about whether a feature
				qualifies as a restrictive layer or horizon, the LHD shall be
				consulted.
(g) The color(s) and
				USDA texture classes for each layer shall berecorded. Any other pertinent
				information about the soil or the site, including percent slope, and landform
				position shall be reported.
1. Soil colors
				shall be determined using a Munsell chart or equivalent and reported for each
				horizon. Soil colors may occur as:
2. Only one color.
3. One dominant color with secondary colors
				(mottles or redoximorphic features).
4. Several colors with approximate equal
				coverage (mottled). To the extent possible, all colors should be recorded, with
				the dominant color first.
(h) The depth from the natural surface to the
				upper and lower boundaries of each layer shall be reported.
(i) All measurements shall be reported in
				inches.
Alabama Administrative Code › Title 420 - ALABAMA STATE BOARD OF HEALTH › Chapter 420-3-1 - ONSITE SEWAGE TREATMENT AND DISPOSAL › Site Evaluation › Section 420-3-1-.46 - Extended Saturation Procedure

Current through Register Vol. 42, No. 9, June 28, 2024
(1) Certain soils, especially those with
				high, very high, and sometimes moderate shrink:-swell potential require
				extended saturation periods before percolation or permeameter testing can be
				done. This process is necessary to allow sufficient time for swelling to occur
				in these soils if dry, regardless of the season of the year. The following list
				of indicators should be used as a guide to help soil testers identify those
				soils that require extended saturation prior to testing to ensure accurate test
				results.
(a) Soil areas identified by the
				USDA/NRCS county soil survey as having moderate or higher shrink-swell
				potential.
(b) Texture Group 4B and
				4C soils.
(c) Soils with pH levels
				of seven or higher in some part. These soils may have vegetative indicators of
				a seemingly over-abundance of red cedar> red bud, green ash, Osage orange,
				etc.
(d) Soils having developed
				directly over argillaceous limestone and/or shale parent material.
(e) Soils that are compacted.
Alabama Administrative Code › Title 420 - ALABAMA STATE BOARD OF HEALTH › Chapter 420-3-1 - ONSITE SEWAGE TREATMENT AND DISPOSAL › Site Evaluation › Section 420-3-1-.47 - Unified System For Site Evaluation

Current through Register Vol. 42, No. 9, June 28, 2024
(1) An engineer or geologist may evaluate a
				site using the unified system method.
(2) The percolation test method may be used
				in combination with this method to aid in evaluating a site.
(3) Lab analysis may be substituted for
				estimates at any time but is required for Texture Group 4B and 4C soils
				(estimated permeability more than 90 MPI). However, in the case where the
				results from this method conflict with an evaluation by a representative of the
				LHD or ADPH, ADPH evaluation results shall be final.
(a) If the design is utilizing drip
				irrigation at a 05 gpd/sq. ft. loading rate, lab analysis is not required.
(b) For any other design using a
				soil loading rate of greater than 240 MPI, lab analysis is not
				required.
Alabama Administrative Code › Title 420 - ALABAMA STATE BOARD OF HEALTH › Chapter 420-3-1 - ONSITE SEWAGE TREATMENT AND DISPOSAL › Site Evaluation › Section 420-3-1-.48 - Soil Morphology Method

Current through Register Vol. 42, No. 9, June 28, 2024
(1) A professional soil classifier may
				evaluate a site using the soil morphology method.
(2) A PHESS may evaluate sites for a
				Conventional OSS. The PHESS shall be currently employed by ADPH1 conduct these
				evaluations only in counties approved by ADPH for this program, and adhere to
				the requirements of these rules. This applies to Small-Flow Systems
				only.
(3) The percolation test
				method may be used in combination with the soil morphology method to aid in
				evaluating a site.
(4) The PHESS or
				professional soil classifier may determine that a lab analysis is necessary.
				However, in the case where the results from the soil morphology method conflict
				with an evaluation by a representative of the LHD or ADPH, the evaluation
				results of ADPH shall be final.
(5)
				For Small-Flow single-family dwellings, a minimum of two observation pits or
				two soil borings shall be required for each EDF, and one observation pit and
				one soil boring shall be performed in the REDF for lots of less than 15,000 sq.
				ft. See Table 17 for exceptions. The test holes shall be located no closer than
				30 feet apart. The pits or borings shall be evenly spaced to represent the EDF
				area.
(6) For Large-Flow systems
				and establishments, a minimum of two observation pits or two soil borings shall
				be required for the initial 600 gpd. One observation pit or one soil boring
				shall be required for each additional 600 gpd of flow or portion thereof
				thereafter. The pits or borings shall be evenly spaced to represent the EDF
				area. The method by which each test is located shall be specified.
(7) Soil borings shall be dug to a minimum
				depth of 48 inches to determine the limiting zone depth, unless prevented by
				bedrock or an additional 6 inches once ASHES is encountered. The soil boring or
				observation pit shall be deeper than the recommended trench depth by the
				required MVS. The minimum diameter of the soil boring shall be 2.5
				inches.
(8) When observation pits
				are used, they shall be a minimum of 60 inches deep unless prevented by hard
				bedrock and constructed in such a fashion as to be easily accessible and safe
				for the evaluator.
(a) The vertical section of
				the observation pit wall shall be picked to a width of at least 12 inches, from
				the ground surface to the floor of the observation pit, for observations and
				note-taking.
(b) The soil in the
				picked zone shall be moist so that the proper colors can be observed and noted.
				If additional moisture is needed, apply water with a spray bottle. All colors
				recorded shall be from moist and unmixed samples.
Alabama Administrative Code › Title 420 - ALABAMA STATE BOARD OF HEALTH › Chapter 420-3-1 - ONSITE SEWAGE TREATMENT AND DISPOSAL › Site Evaluation › Section 420-3-1-.49 - Soil Maps

Current through Register Vol. 42, No. 9, June 28, 2024
(1)
Types
				of Soil Maps.
(a) Preliminary maps may
				be made using a wide variety of scales, but not smaller than 1:24,000. They
				usually provide sufficient information to make decisions about further land
				development. Minimum size delineation is approximately 3 acres. A preliminary
				soil map can be obtained from the USDA NRCS published soil survey. A
				preliminary soil map is a required part of Part 1 of the Site Development Plan.
				The map may be used in Part 1 of the Site Development Plan process and can come
				directly from the published survey or be made by a soil classifier. It is
				recommended that preliminary maps from USDA NRCS published soil surveys be
				reviewed and checked for accuracy by a Professional Soil Classifier. The
				preliminary maps from USDA NRCS published surveys may not be used in the place
				of soil maps required for site evaluation in Part 2 of the Site Development
				Plan.
(b) Low intensity maps show
				the location and extent of soils and landscape features sufficient for most
				Large-Flow planning but are not site specific to such a degree that allows for
				individual site determinations. Base maps are 1-inch equals 300 feet scale or
				larger. One soil observation pit per 3 acres is the minimum. Low intensity maps
				are excellent planning tools for Large-Flow Development and other areas where
				an OSS will be used.
(c) High
				intensity maps are the minimum level of intensity for soil maps when used in
				lieu of other evaluations or tests, i.e., percolation. The map scale shall be
				I-inch equals 100 feet or larger. High intensity soil maps can be used for
				individual lots or in a Large-Flow Development. A minimum of four borings per
				acre is required to delineate the soils. When a grid system is not used, the
				boring location shall be dictated by the landscape or in a manner to best
				define the soils that occur. All borings shall be flagged and numbered. When a
				high intensity soil map is used to evaluate a site for an OSS on an individual
				lot, the lot comers shall be staked and flagged, and the lot lines flagged at
				regular intervals in wooded or uncleared areas. If necessary, the owner shall
				mow or otherwise clear the site to facilitate the mapping process.
(d) Extra high intensity studies are an
				intensive soil morphological study that is site specific. A minimum of two
				borings is required per site. Soil descriptions shall be provided, and the soil
				classified to the series level whenever possible. Map boundaries are not
				necessarily required at this level of evaluation.
Alabama Administrative Code › Title 420 - ALABAMA STATE BOARD OF HEALTH › Chapter 420-3-1 - ONSITE SEWAGE TREATMENT AND DISPOSAL › Site Evaluation › Section 420-3-1-.50 - Protection Of EDF And REDF

Current through Register Vol. 42, No. 9, June 28, 2024
(1) The
				primary purpose for requiring protection of the EDF and REDF is to prevent any
				disturbance to these areas that will affect the integrity of the soil and the
				performance of the OSS, to avoid costly and untimely delays, and to identify
				these areas as EDFs. These areas shall be restricted from building development
				prior to installation of the 08S.
(a)
				Protection of the EDF and REDF shall be the responsibility of the property
				owner but may be delegated to an appropriate responsible party depending on the
				site location, type of system, level of development, and construction
				activity.
(b) Protective actions
				and methods may vary according to the type of building development and
				OSS.
Alabama Administrative Code › Title 420 - ALABAMA STATE BOARD OF HEALTH › Chapter 420-3-1 - ONSITE SEWAGE TREATMENT AND DISPOSAL › Site Evaluation › Section 420-3-1-.51 - Lot Modification - Planned And Unplanned

Current through Register Vol. 42, No. 9, June 28, 2024
(1)
General Requirements.
Lot
				modification is the planned or unplanned changing of a lot characteristic that
				shall impact the EDF.
(a) Planned lot
				modification shall be accomplished under the supervision of an engineer and in
				accordance with the applicable sections of these rules to make a lot more
				conducive for use of an EDF. An OSS for a lot that has been proposed after lot
				modification shall be designed by an engineer when required.
(b) Unplanned lot modification can make a lot
				unsuitable as a site for an OSS or EDS. In these situations, the lot to be used
				shall require additional steps to return it to a useable state. If this is
				possible, the additional steps required shall be determined by an engineer with
				the concurrence of the LHD except under (3)(a) and (3)(c) of this
				rule.
(c) Lot modification, as it
				impacts the use of an EDF, usually involves the use of fill. Fill is material
				that is used to modify a lot by filling cuts or is material that is placed over
				in-situ soil to increase the height of the existing ground surface. Fill can be
				appropriate or inappropriate for use with an OSS.
Alabama Administrative Code › Title 420 - ALABAMA STATE BOARD OF HEALTH › Chapter 420-3-1 - ONSITE SEWAGE TREATMENT AND DISPOSAL › Design And Construction Requirements › Section 420-3-1-.52 - Design Flow And Wastewater Concentrations

Current through Register Vol. 42, No. 9, June 28, 2024
(1) The daily design flow of sewage from
				dwellings shall be computed using Table 1.
(2) For Large-Flow Cluster Wastewater Systems
				or establishments, the design flow shall be derived from Table 1. comparable
				systems, or other published engineering design criteria. Sizing based on BOD
				concentrations shall be derived from other published design criteria.
Previous Rule .78 was renumbered .52 per certification
					 published December 30, 2022; effective February 13,
					 2023.
AuthorS:
Thad Pittman, Matthew Conner, Ken
					 Stephens, Bob Bright
Statutory Authority:
Code of Ala.
					 1975
, §§
											22-2-2(4);
					 22-2-2(6);
					 22-10-1,
et
					 seq
.; 22-26-1
et seq
.
Alabama Administrative Code › Title 420 - ALABAMA STATE BOARD OF HEALTH › Chapter 420-3-1 - ONSITE SEWAGE TREATMENT AND DISPOSAL › Design And Construction Requirements › Section 420-3-1-.53 - Gravel Field Standard EDF Sizing For Dwellings

Current through Register Vol. 42, No. 9, June 28, 2024
(1) The Gravel Field Standard is the minimum
				total trench bottom area for dwellings calculated by multiplying the number of
				bedrooms by the number in the column labeled "Square Feet per Bedroom" in Table
				2 or Table 3. The loading rate for an EDF shall correspond to the measured or
				assigned percolation rate determined according to
				420-3-1-.39 Soil
				Permeability.
(2) A primary EDF for
				dwellings shall be a minimum of 300 square feet of the Gravel Field Standard.
				Permitted disposal products may be used with appropriate sizing.
Previous Rule .79 was renumbered .53 per certification
					 published December 30, 2022; effective February 13,
					 2023.
Author:
Thad Pittman, Matthew Conner, Ken
					 Stephens, Bob Bright
Statutory Authority:
Code of Ala.
					 1975
, §§
											22-2-2(4);
					 22-2-2(6);
					 22-10-1,
et
					 seq
.; 22-26-1
et seq
.
Alabama Administrative Code › Title 420 - ALABAMA STATE BOARD OF HEALTH › Chapter 420-3-1 - ONSITE SEWAGE TREATMENT AND DISPOSAL › Design And Construction Requirements › Section 420-3-1-.54 - Gravel Field Standard Reductions For Dwellings

Current through Register Vol. 42, No. 9, June 28, 2024
(1) Any reductions in Gravel Field Standard
				bottom area for a dwelling using any permitted disposal product as an
				alternative to the Gravel Field Standard as calculated in
				420-3-1-.53 Gravel Field Standard
				EDF Sizing for Dwellings, shall be expressed as a percent reduction of bottom
				area and shall be reflected in the Product Permit.
(a) The bottom area reduction from the Gravel
				Field Standard for advanced treatment to secondary effluent standards is found
				in Column VI of Table 2 or Table 3.
(b) The minimum bottom area square footage
				calculated for the Gravel Field Standard may bereduced by 33 percent of bottom
				area if gravel depth is increased to 24 inches total for EDFs with percolation
				rates of less than 120 MPI.
(c)
				Only one bottom area reduction may be taken per field. For example, if a
				reduction is taken for advanced treatment, no bottom area reduction may be
				taken for disposal technology used, or if a bottom area reduction is taken for
				depth of gravel, no bottom area reduction may be taken for advanced
				treatment.
(d) If the system has a
				design flow of over 4,000 gpd, advanced treatment is required.