reglab/statecodes huggingface dataset:
Code of Massachusetts Regulations › 310 CMR - DEPARTMENT OF ENVIRONMENTAL PROTECTION › Title 310 CMR 15.000 - The State Environmental Code, Title 5: Standard Requirements for the Siting, Construction, Inspection, Upgrade and Expansion of On-site Sewage Treatment and Disposal Systems and for the Transport and Disposal of Septage › Subpart B - SITING OF SYSTEMS › Section 15.100 - General Provisions

Current through Register 1525, July 5, 2024
(1) Every location
				proposed for the construction, upgrade, or expansion of an on-site subsurface
				sewage disposal system shall be evaluated based upon an analysis of all site
				characteristics which may affect system function and performance in accordance
				with the evaluation criteria specified in
				310 CMR
				15.101 through
				15.107.
(2) Each location shall be field evaluated
				for suitability for subsurface sewage disposal consistent with
				310 CMR 15.000 by a Soil
				Evaluator approved by the Department in accordance with
				310 CMR
				15.017 prior to the commencement of final
				system design pursuant to Subpart C of
				310 CMR 15.000 and
				application for a Disposal System Construction Permit. The evaluation shall
				include a soil profile on every proposed disposal area for which a Disposal
				System Construction Permit has not yet been issued.
Code of Massachusetts Regulations › 310 CMR - DEPARTMENT OF ENVIRONMENTAL PROTECTION › Title 310 CMR 15.000 - The State Environmental Code, Title 5: Standard Requirements for the Siting, Construction, Inspection, Upgrade and Expansion of On-site Sewage Treatment and Disposal Systems and for the Transport and Disposal of Septage › Subpart B - SITING OF SYSTEMS › Section 15.101 - Site Evaluation Criteria

Current through Register 1525, July 5, 2024
(1) Every proposed
				disposal area shall be examined by a Soil Evaluator and the Approving Authority
				to determine if the disposal area is compatible with the proposed sewage
				disposal system in relation to the design flow set forth in
				310 CMR
				15.203 and system location criteria set forth
				in
				310 CMR
				15.106.
(2) Every proposed disposal area shall be
				assessed based on the following field test and analysis criteria:
(a) deep observation hole testing;
(b) soil profile determination;
(c) percolation testing;
(d) landscape position; and
(e) hydrogeologic properties
Code of Massachusetts Regulations › 310 CMR - DEPARTMENT OF ENVIRONMENTAL PROTECTION › Title 310 CMR 15.000 - The State Environmental Code, Title 5: Standard Requirements for the Siting, Construction, Inspection, Upgrade and Expansion of On-site Sewage Treatment and Disposal Systems and for the Transport and Disposal of Septage › Subpart B - SITING OF SYSTEMS › Section 15.102 - Deep Observation Hole Test

Current through Register 1525, July 5, 2024
(1) The
				purpose of the deep observation hole test is to determine in accordance with
				310 CMR 15.103 the
				soil profile in the proposed disposal area, the depth of overburden above
				ledge, bedrock or impervious layer(s), and to determine the observed
				ground-water elevation at the time of testing and to gather evidence to
				determine the adjusted ground-water elevation.
(2) A minimum of two deep observation hole
				tests shall be performed in the presence of the Approving Authority at every
				proposed disposal area, two in the primary area and two in the reserve area.
				Additional testing shall be required if, in the opinion of the Soil Evaluator
				or the Approving Authority, there is evidence of inconsistent soil
				characteristics, the presence of ledge, or additional testing is necessary to
				properly assess site conditions within the proposed location to ensure that it
				can be installed entirely on soils and slopes in conformance with the
				requirements of
				310 CMR 15.000. When a
				trench system is to be designed with the reserve area between the trenches, the
				Approving Authority may allow two deep hole observations if in the opinion of
				the Approving Authority the two deep holes adequately characterize the soils in
				both the primary and reserve areas.
(3) Deep observation holes shall be excavated
				in two adjoining segments, the first ending at approximately the five-foot
				level to allow detailed examination by the Soil Evaluator without need for
				shoring, and an adjoining segment which shall extend to a minimum depth of four
				feet below the bottom elevation of the proposed soil absorption system but in
				no case less than ten feet below existing/natural grade unless such depth is
				unattainable due to bedrock or refusal or high groundwater, or where human
				safety may be in jeopardy.
(4)
				Every deep observation hole shall be located from known and recoverable
				reference points or benchmarks so that it may be located on the system design
				plan with an accuracy of one foot. The location of the hole shall be defined as
				being half way between the side walls of the excavation at the point where the
				five foot deep segment adjoins the deeper segment.
(5) It shall be the responsibility of the
				owner or agent to ensure that every deep observation hole is secured to prevent
				accidents whenever work is not in progress.
Code of Massachusetts Regulations › 310 CMR - DEPARTMENT OF ENVIRONMENTAL PROTECTION › Title 310 CMR 15.000 - The State Environmental Code, Title 5: Standard Requirements for the Siting, Construction, Inspection, Upgrade and Expansion of On-site Sewage Treatment and Disposal Systems and for the Transport and Disposal of Septage › Subpart B - SITING OF SYSTEMS › Section 15.103 - Soil Profile

Current through Register 1525, July 5, 2024
(1) The Soil
				Evaluator shall prepare a soil log using a form approved by the Department, in
				accordance with the Department's most recent manual for Soil
				Evaluators.
(2) The following
				characteristics of each recognizable soil horizon or substratum in the deep
				observation hole testing shall be determined and recorded on the form:
(a) depth and thickness of horizon;
(b) estimated soil textural class, using the
				USDA/NRCS system of classification;
(c) estimated volume percentage of coarse
				fragments;
(d) abundance, size and
				contrast of redoximorphic features, if present;
(e) soil structure (soil profile pits only);
				and
(f) soil consistence.
Code of Massachusetts Regulations › 310 CMR - DEPARTMENT OF ENVIRONMENTAL PROTECTION › Title 310 CMR 15.000 - The State Environmental Code, Title 5: Standard Requirements for the Siting, Construction, Inspection, Upgrade and Expansion of On-site Sewage Treatment and Disposal Systems and for the Transport and Disposal of Septage › Subpart B - SITING OF SYSTEMS › Section 15.104 - Percolation Testing

Current through Register 1525, July 5, 2024
(1) The standard
				percolation test is intended to give an approximate measure of the soil's
				percolating capacity. Unsaturated hydraulic conductivities vary dramatically
				from the saturated hydraulic conductivity with changes in soil characteristics
				and moisture content. Percolation testing may be conducted at any time of the
				year and the data obtained in accordance with the procedures specified by
				310 CMR 15.000 may be deemed
				valid for an indefinite period provided the soils within the site evaluated
				remain undisturbed and unaltered. All percolation testing shall be performed in
				the presence of the Approving Authority.
(2) A percolation test shall provide data
				necessary to assess the suitability of the soil to transmit water from the soil
				absorption system and to a depth of four feet below this elevation. Where the
				soil varies with depth as indicated by the results of the deep observation hole
				testing performed pursuant to
				310 CMR
				15.102, percolation tests shall be conducted
				in the soil which is identified to be the most restrictive by the Soil
				Evaluator with the concurrence of the Approving Authority.
(3) Percolation tests shall be performed by a
				Massachusetts Registered Professional Engineer, Massachusetts Registered
				Sanitarian, a Soil Evaluator, or a person who:
(a) in the opinion of the Approving Authority
				is qualified to perform such tests;
(b) has one year of documented experience in
				satisfactorily performing such tests; and
(c) has used or gained skills that
				demonstrate sufficient competence to perform such tests.
Code of Massachusetts Regulations › 310 CMR - DEPARTMENT OF ENVIRONMENTAL PROTECTION › Title 310 CMR 15.000 - The State Environmental Code, Title 5: Standard Requirements for the Siting, Construction, Inspection, Upgrade and Expansion of On-site Sewage Treatment and Disposal Systems and for the Transport and Disposal of Septage › Subpart B - SITING OF SYSTEMS › Section 15.105 - Procedure for Performing a Percolation Test

Current through Register 1525, July 5, 2024
A percolation test shall be conducted by performing the
				  following steps in sequence:
(1)
				Prepare a test hole located within the proposed disposal area which, in the
				judgment of the Soil Evaluator and the Approving Authority, is the most
				limiting. The test hole shall have a diameter of 12 inches, as precisely as
				possible, with vertical sides 18 inches deep not including any allowable liners
				or filter layers on either the bottom or sides.
(2) Establish a fixed point at the top or
				bottom of the test hole from which all measurements will be taken.
(3) Scratch the bottom and sides of the test
				hole to remove any smeared soil surfaces, taking care not to significantly
				change the hole dimensions. Add two inches of coarse sand to protect the bottom
				from scouring, or insert a board or other impervious object in the hole so that
				water may be poured down or on it during the filling operation. A mesh or
				perforated liner designed to maintain the test hole dimensions in extremely
				loose soils while allowing essentially unrestricted flow of water may be used
				with permission of the Approving Authority.
(4) Carefully fill the hole with clear water
				to a minimum depth of 12 inches from the bottom of the hole. Maintain this
				minimum 12 inch or greater water level by adding water as necessary in order to
				saturate surrounding soils for a period of no less than 15 minutes after first
				filling the hole.
(5) After
				saturation, let the water level drop to a depth of nine inches and then measure
				the length of time in minutes for it to drop from a depth of nine inches to a
				depth of six inches. If the rate is erratic in the opinion of the Approving
				Authority, the hole shall be refilled and soaked until the drop per increment
				of time is steady. The time for the level to drop from a depth of nine inches
				to a depth of six inches, divided by three, is the percolation rate in minutes
				per inch.
(6) In certain soils,
				particularly coarse sands, the soil may be so pervious as to make a percolation
				test difficult, impractical, and meaningless. At the discretion of the Soil
				Evaluator and with the concurrence of the Approving Authority, the percolation
				test may be discontinued and a rate of two minutes per inch or less can be
				assumed provided that at least 24 gallons of water has been added to the
				percolation hole within 15 minutes and it is impossible to obtain a liquid
				depth of nine inches.
Code of Massachusetts Regulations › 310 CMR - DEPARTMENT OF ENVIRONMENTAL PROTECTION › Title 310 CMR 15.000 - The State Environmental Code, Title 5: Standard Requirements for the Siting, Construction, Inspection, Upgrade and Expansion of On-site Sewage Treatment and Disposal Systems and for the Transport and Disposal of Septage › Subpart B - SITING OF SYSTEMS › Section 15.106 - Landscape Position

Current through Register 1525, July 5, 2024
(1) The topography
				of the proposed disposal area shall be identified and recorded on the
				evaluation form. Particular attention shall be given to recording features
				which may adversely affect the functioning of an on-site system. These include:
(a) bedrock outcrops or areas with many
				stones and/or boulders;
(b) steep
				slopes (greater than 3:1, horizontal to vertical) exhibiting signs of unstable
				soil such as landslide scars, slump blocks, tree trunks or shrubs bending
				downslope;
(c) highly disturbed
				ground as indicated by such features as remnants of foundations or pavements or
				buried construction debris;
(d)
				low-lying coastal areas exhibiting signs of tidal inundation or tidal marsh
				vegetation;
(e) low-lying inland
				areas exhibiting signs of influence of surface water runoff, ponding or
				freshwater wetland vegetation;
(f)
				flat low-lying areas adjacent to surface water bodies and streams;
				and
(g) the boundary of a velocity
				zone.
Code of Massachusetts Regulations › 310 CMR - DEPARTMENT OF ENVIRONMENTAL PROTECTION › Title 310 CMR 15.000 - The State Environmental Code, Title 5: Standard Requirements for the Siting, Construction, Inspection, Upgrade and Expansion of On-site Sewage Treatment and Disposal Systems and for the Transport and Disposal of Septage › Subpart B - SITING OF SYSTEMS › Section 15.107 - Hydrogeologic Properties

Current through Register 1525, July 5, 2024
(1) The
				hydrogeologic properties of the proposed disposal area shall be identified and
				recorded on the evaluation form with respect to the following:
(a) estimated direction of ground-water
				flow;
(b) high ground-water
				elevation;
(c) estimated depth to
				bedrock if a factor in design of proposed system, or actual depth if
				encountered during deep observation hole tests;
(d) depth of unsaturated zone, including any
				perched water tables;
(e) drainage
				classification of dominant soil type as defined by NRCS;
(f) lateral distance to surface water and
				wetland delineation;
(g) location
				of every water supply, public and private,
1.
				within 400 feet of the proposed system location in the case of surface water
				supplies and gravel packed public water supply wells,
2. within 250 feet of the proposed system
				location in the case of tubular public water supply wells, and
3. within 150 feet of the proposed system
				location in the case of private water supply wells;
(h) approximate safe yield or design capacity
				of every public water supply, if information is available; and
(i) identification of proposed disposal area
				in relation to the location of nitrogen sensitive areas designated pursuant to
				310
				CMR 15.214.
Code of Massachusetts Regulations › 310 CMR - DEPARTMENT OF ENVIRONMENTAL PROTECTION › Title 310 CMR 15.000 - The State Environmental Code, Title 5: Standard Requirements for the Siting, Construction, Inspection, Upgrade and Expansion of On-site Sewage Treatment and Disposal Systems and for the Transport and Disposal of Septage › Subpart C - DESIGN, CONSTRUCTION, REPAIR, AND REPLACEMENT OF ON-SITE SEWAGE DISPOSAL SYSTEMS › Section 15.201 - Type of System

Current through Register 1525, July 5, 2024
Each on-site subsurface sewage disposal system approved
				  pursuant to
				  310 CMR
				  15.000 shall consist of a septic tank which discharges
				  liquid effluent through a gravity distribution, dosing or pressure distribution
				  network to a soil absorption system as hereinafter described. No modifications
				  or alterations to the design criteria shall be allowed except pursuant to the
				  alternative system and shared systems provisions of
				  310
				  CMR 15.280 through
				  15.293, or the local upgrade
				  approval or variance procedures of
				  310
				  CMR 15.400.
Code of Massachusetts Regulations › 310 CMR - DEPARTMENT OF ENVIRONMENTAL PROTECTION › Title 310 CMR 15.000 - The State Environmental Code, Title 5: Standard Requirements for the Siting, Construction, Inspection, Upgrade and Expansion of On-site Sewage Treatment and Disposal Systems and for the Transport and Disposal of Septage › Subpart C - DESIGN, CONSTRUCTION, REPAIR, AND REPLACEMENT OF ON-SITE SEWAGE DISPOSAL SYSTEMS › Section 15.204 - Increases in Design Flow to System

Current through Register 1525, July 5, 2024
No person shall increase the actual or design flow to any
				  cesspool or to any other system above the existing approved capacity, or change
				  the type of establishment of a facility served by a cesspool, unless the
				  cesspool or system is upgraded first. Upgrades to accept increased design flow
				  shall be performed in full compliance with the requirements applicable to new
				  construction unless a variance is allowed pursuant to
				  310 CMR
				  15.414. For purposes of 310 CMR 15.204, the
				  approved design flow shall be the flow listed in the most recent Disposal Works
				  Construction Permit.
Code of Massachusetts Regulations › 310 CMR - DEPARTMENT OF ENVIRONMENTAL PROTECTION › Title 310 CMR 15.000 - The State Environmental Code, Title 5: Standard Requirements for the Siting, Construction, Inspection, Upgrade and Expansion of On-site Sewage Treatment and Disposal Systems and for the Transport and Disposal of Septage › Subpart C - DESIGN, CONSTRUCTION, REPAIR, AND REPLACEMENT OF ON-SITE SEWAGE DISPOSAL SYSTEMS › Section 15.212 - Depth to Groundwater

Current through Register 1525, July 5, 2024
(1) The minimum
				vertical separation distance between the bottom of the stone underlying the
				soil absorption system above the high ground-water elevation shall be
(a) four feet in soils with a recorded
				percolation rate of more than two minutes per inch;
(b) five feet in soils with a recorded
				percolation rate of two minutes or less per inch.
Code of Massachusetts Regulations › 310 CMR - DEPARTMENT OF ENVIRONMENTAL PROTECTION › Title 310 CMR 15.000 - The State Environmental Code, Title 5: Standard Requirements for the Siting, Construction, Inspection, Upgrade and Expansion of On-site Sewage Treatment and Disposal Systems and for the Transport and Disposal of Septage › Subpart C - DESIGN, CONSTRUCTION, REPAIR, AND REPLACEMENT OF ON-SITE SEWAGE DISPOSAL SYSTEMS › Section 15.213 - Construction in Velocity Zones and Floodways

Current through Register 1525, July 5, 2024
(1) No
				septic tank or humus/composting toilet shall be constructed in a velocity zone
				on a coastal beach, barrier beach, or dune, or in a regulatory floodway, except
				a septic tank that replaces a tank in existence on the site as of March 31,
				1995 that has been damaged, removed or destroyed, where placement of the tank
				outside of the velocity zone or regulatory floodway, either horizontally or
				vertically, is not feasible. Where reconstruction of a system in existence on
				March 31, 1995 occurs or reconstruction of a building or buildings is allowed
				in accordance with the Wetlands Protection Act and
				310 CMR
				10.00:
Wetlands Protection
, it shall
				be presumed to be feasible to elevate the tank if the building is elevated
				above the velocity zone or regulatory floodway.
(2) No soil absorption system shall be
				constructed in a velocity zone on a coastal beach, barrier beach, or dune, or
				in a regulatory floodway, unless
(a) the
				system is to serve a building or buildings that were in existence on March 31,
				1995 or reconstruction of such building or buildings where allowed in
				accordance with the Wetlands Protection Act, M.G.L. c. 140, § 131 and its
				implementing regulations as
				310 CMR
				10.00:
Wetlands Protection
;
(b) there is no increase in design flow from
				such building or buildings;
(c) no
				connection to a public sewer or shared system is available;
(d) the owner or applicant cannot site the
				system elsewhere;
(e) the septic
				tank or humus/composting toilet is sited outside of the velocity zone or
				regulatory floodway, either horizontally or vertically;
(f) the system achieves separation from high
				groundwater elevation as required by
				310
				CMR 15.212; and
(g) any portion of the soil absorption system
				that is within the velocity zone or regulatory floodway is a leaching bed or
				trench system or any other system constructed in accordance with the Wetlands
				Protection Act and
				310 CMR
				10.00:
Wetlands Protection
.
Code of Massachusetts Regulations › 310 CMR - DEPARTMENT OF ENVIRONMENTAL PROTECTION › Title 310 CMR 15.000 - The State Environmental Code, Title 5: Standard Requirements for the Siting, Construction, Inspection, Upgrade and Expansion of On-site Sewage Treatment and Disposal Systems and for the Transport and Disposal of Septage › Subpart C - DESIGN, CONSTRUCTION, REPAIR, AND REPLACEMENT OF ON-SITE SEWAGE DISPOSAL SYSTEMS › Section 15.214 - Designation of Nitrogen Sensitive Areas

Current through Register 1525, July 5, 2024
(1)
				The following areas have been determined by the Department to be particularly
				sensitive to the discharge of pollutants from on-site sewage disposal systems
				and are therefore designated Nitrogen Sensitive Areas:
(a)
Public and Private Water
				Supply Protection Areas
:
1.
				Department-approved Zone IIs for wells or wellfields used by public water
				systems as defined in
				310
				CMR 22.02 and, in the absence of a
				Department-approved Zone II, the Interim Wellhead Protection Area (IWPA) for a
				public water system's well or wellfield as defined in
				310
				CMR 22.02; and
2. Any areas where the use of both on-site
				systems and wells that are not regulated as public water supplies under
				310 CMR
				22.00:
Drinking Water
serve
				facilities.
Code of Massachusetts Regulations › 310 CMR - DEPARTMENT OF ENVIRONMENTAL PROTECTION › Title 310 CMR 15.000 - The State Environmental Code, Title 5: Standard Requirements for the Siting, Construction, Inspection, Upgrade and Expansion of On-site Sewage Treatment and Disposal Systems and for the Transport and Disposal of Septage › Subpart C - DESIGN, CONSTRUCTION, REPAIR, AND REPLACEMENT OF ON-SITE SEWAGE DISPOSAL SYSTEMS › Section 15.216 - Aggregate Determinations of Flows and Nitrogen Loadings

Current through Register 1525, July 5, 2024
(1) The 440 gallons per day per acre nitrogen
				loading limitation imposed by
				310
				CMR 15.215(1)  may be
				calculated in the aggregate by using nitrogen credit land in accordance with an
				approved Facility Aggregation Plan or Community Aggregation Plan. Applicants
				proposing systems to be located within a community or region covered by a
				Community Aggregation Plan approved by the Department shall calculate aggregate
				determinations of flows and nitrogen loadings in accordance with the Plan and
				the Department's
Guidelines for Title 5 Aggregation of Flows and
				Nitrogen Loading
. All other applicants seeking aggregate determination
				of flows and nitrogen loading shall prepare a Facility Aggregation Plan in
				accordance with
				310
				CMR 15.216 and the Department's
Guidelines for Title 5 Aggregation of Flows and Nitrogen
				Loading
.
(2) To qualify as
				Nitrogen Credit Land, the land must:
(a) be
				within the same Nitrogen Sensitive Area as the facility if the facility is in a
				Nitrogen Sensitive Area;
(b) be
				within the same subdivision in an area where the use of both on-site systems
				and drinking water wells are proposed to serve the facility;
(c) not have any manmade sources of nitrogen,
				including, but not limited to, wastewater discharges and nitrogen based
				fertilizer located thereon;
(d) not
				be used for raising, breeding or keeping of animals;
(e) be pervious;
(f) be outside of Zone As, Velocity Zones and
				Regulatory Floodways;
(g) not be
				covered by any surface water body including, but not limited to, a river,
				stream, lake, pond, or ocean;
(h)
				not be currently designated as nitrogen credit land; and
(i) meet the criteria set forth in the
				Department's
Guidelines for Title 5 Aggregation of Flows and Nitrogen
				Loading
.
Code of Massachusetts Regulations › 310 CMR - DEPARTMENT OF ENVIRONMENTAL PROTECTION › Title 310 CMR 15.000 - The State Environmental Code, Title 5: Standard Requirements for the Siting, Construction, Inspection, Upgrade and Expansion of On-site Sewage Treatment and Disposal Systems and for the Transport and Disposal of Septage › Subpart C - DESIGN, CONSTRUCTION, REPAIR, AND REPLACEMENT OF ON-SITE SEWAGE DISPOSAL SYSTEMS › Section 15.217 - Systems with Enhanced Nitrogen Removal

Current through Register 1525, July 5, 2024
(1)
				The nitrogen loading limitations established in
				310
				CMR 15.215(1)  shall not
				apply to discharge of an effluent meeting the federal Safe Drinking Water Act
				nitrate standard of 10 ppm through either an approved alternative system or a
				treatment works with a groundwater discharge permit issued pursuant to
				314 CMR
				5.00:
Ground Water Discharge Permit
				Program
.
(2) For systems
				located in a Nitrogen Sensitive Area designated pursuant to
				310
				CMR 15.214(1)(a), an
				increase in calculated allowable nutrient loading per acre may be allowed with
				the use of a technology approved for enhanced nutrient removal pursuant to
				either the piloting, provisional or general use certification provisions in
				310
				CMR 15.281 through
				15.288 as illustrated by the
				following example: Recirculating Sand Filter 550 gpd/acre
(3) In the event that the Department
				determines that a system approved for enhanced nutrient removal using a
				technology approved by the Department on a piloting or provisional basis
				pursuant to
				310
				CMR 15.285 and
				15.286 respectively is not
				performing in accordance with the approval, the Department or the Local
				Approving Authority may require the system owner to instead use an enhanced
				nutrient removal technology that has been certified for general use by the
				Department. The increased design flow allowed reflects the nutrient removal
				performance of the approved technology compared to a standard system otherwise
				described in
				310
				CMR 15.100 through
				15.255. A system receiving a
				design flow credit for enhanced nutrient removal pursuant to
				310
				CMR 15.217 must still comply with the
				requirements of
				310
				CMR 15.100 through
				15.293 with respect to system
				siting and design; the credit does not affect any other siting or design
				requirement.
Code of Massachusetts Regulations › 310 CMR - DEPARTMENT OF ENVIRONMENTAL PROTECTION › Title 310 CMR 15.000 - The State Environmental Code, Title 5: Standard Requirements for the Siting, Construction, Inspection, Upgrade and Expansion of On-site Sewage Treatment and Disposal Systems and for the Transport and Disposal of Septage › Subpart C - DESIGN, CONSTRUCTION, REPAIR, AND REPLACEMENT OF ON-SITE SEWAGE DISPOSAL SYSTEMS › Section 15.221 - General Construction Requirements for All System Components

Current through Register 1525, July 5, 2024
(1) All tanks, including septic tanks,
				distribution boxes, pump chambers, dosing chambers and grease traps, shall be
				either:
(a) watertight through manufacturer's
				specification and warranty; or
(b)
				made watertight by the manufacturer, equipment supplier or installer using
				asphalt or synthetic polymer sealer specified by the concrete or synthetic
				material manufacturer.
Code of Massachusetts Regulations › 310 CMR - DEPARTMENT OF ENVIRONMENTAL PROTECTION › Title 310 CMR 15.000 - The State Environmental Code, Title 5: Standard Requirements for the Siting, Construction, Inspection, Upgrade and Expansion of On-site Sewage Treatment and Disposal Systems and for the Transport and Disposal of Septage › Subpart C - DESIGN, CONSTRUCTION, REPAIR, AND REPLACEMENT OF ON-SITE SEWAGE DISPOSAL SYSTEMS › Section 15.222 - Building Sewers

Current through Register 1525, July 5, 2024
(1) The building
				sewer shall be sufficient to serve the connected fixtures. In no case shall the
				building sewer be less than four inches in diameter.
(2) The minimum distance between a building
				sewer, and a private water supply well or suction line shall be ten
				feet.
(3) The building sewer shall
				be constructed of corrosion resistant material and equipped with water tight
				joints; cast-iron, schedule 40 PVC pipe or the equivalent.
(4) All pipe joints of the building sewer
				shall be made water-tight and protected against damage by roots. Poured-type
				joints shall be properly wiped on the inside to eliminate obstruction of
				flow.
(5) The building sewer shall
				be laid on a compacted firm base.
(6) The building sewer shall be designed to
				provide a minimum velocity of sewage flow of two feet per second when flowing
				full. This requirement is met when a four-inch building sewer is laid at a
				slope of not less than 0.01 (c inch per foot). A slope of 0.02 (¼ inch
				per foot) is preferable.
(7) The
				building sewer shall be laid on a continuous grade and as nearly as possible in
				a straight line in accordance with accepted engineering practice.
(8) Manholes, with metal frames and covers at
				grade, sweeping bends, or a cleanout accessible at the surface of the ground,
				shall be provided at the junction of two or more sewers, at all changes in
				direction or a change in grade of the sewers, and at intervals no greater than
				100 feet. All gravity sewer manholes shall have an open channel depth equal to
				or greater than the diameter of the inlet sewer and the change of direction in
				each manhole shall not exceed 90°. (Change of direction is the interior
				angle between the new direction of flow and the projected extension of the
				original direction of flow.)
(9)
				The building sewer shall be vented through the vent stack or main vent of the
				building served by it. No trap shall be installed in the building sewer or
				building drain.
(10) All building
				sewers shall be constructed in accordance with the State Plumbing Code, 248 CMR
				2.00.
Code of Massachusetts Regulations › 310 CMR - DEPARTMENT OF ENVIRONMENTAL PROTECTION › Title 310 CMR 15.000 - The State Environmental Code, Title 5: Standard Requirements for the Siting, Construction, Inspection, Upgrade and Expansion of On-site Sewage Treatment and Disposal Systems and for the Transport and Disposal of Septage › Subpart C - DESIGN, CONSTRUCTION, REPAIR, AND REPLACEMENT OF ON-SITE SEWAGE DISPOSAL SYSTEMS › Section 15.223 - Septic Tanks

Current through Register 1525, July 5, 2024
(1) Septic tanks
				shall have the following capacities:
(a) For a
				single family dwelling unit with a design flow of less than 1,000 gallons per
				day, a minimum effective liquid capacity of 200% of the design flow or a
				minimum hydraulic detention flow of 48 hours, whichever is greater, shall be
				required. In no case shall the effective liquid capacity of the tank as
				measured below the outlet invert elevation be less than 1,500
				gallons.
(b) When designed to serve
				facilities other than a single family dwelling unit or whenever the calculated
				design flow is 1,000 gallons per day or greater, a two compartment tank or two
				tanks in series are required. The design of the tanks shall be in accordance
				with
				310 CMR
				15.224 for multiple compartment tanks and
				310 CMR 15.225
				for tanks in series. At a minimum, the total, combined effective liquid
				capacity of both tanks in series or of the multiple compartment tank shall not
				be less than 1,500 gallons.
(c)
				When a domestic garbage grinder is proposed or installed, the minimum liquid
				capacity of the septic tank shall be 200% of the design flow with a minimum
				tank size of 1,500 gallons and a two compartment tank or two tanks in series
				shall be required which meet the design criteria specified in 310 CMR
				15.223(1)(b). Domestic garbage grinders are prohibited in facilities which
				include an elevated septic tank constructed in accordance with
				310 CMR
				15.213 (construction in V-zones).
Code of Massachusetts Regulations › 310 CMR - DEPARTMENT OF ENVIRONMENTAL PROTECTION › Title 310 CMR 15.000 - The State Environmental Code, Title 5: Standard Requirements for the Siting, Construction, Inspection, Upgrade and Expansion of On-site Sewage Treatment and Disposal Systems and for the Transport and Disposal of Septage › Subpart C - DESIGN, CONSTRUCTION, REPAIR, AND REPLACEMENT OF ON-SITE SEWAGE DISPOSAL SYSTEMS › Section 15.224 - Multiple Compartment Tanks

Current through Register 1525, July 5, 2024
Tanks with multiple compartments shall be required as
				  specified in
				  310 CMR
				  15.223(1). When multiple
				  compartment tanks are used the following shall be required:
(1) The number of compartments shall not
				exceed two;
(2) The first
				compartment shall be sized for a minimum hydraulic detention time of 48 hours
				based on the design flow;
(3) The
				second compartment shall be sized for a minimum hydraulic detention time of 24
				hours based on the design flow;
(4)
				The compartments shall be interconnected by a minimum four inch vented,
				inverted U-shaped pipe which extends below the bottom of the scum layer;
				and
(5) The outlet tee of each
				compartment shall be equipped with a corrosion resistant gas baffle or a
				Department approved effluent tee filter.
Code of Massachusetts Regulations › 310 CMR - DEPARTMENT OF ENVIRONMENTAL PROTECTION › Title 310 CMR 15.000 - The State Environmental Code, Title 5: Standard Requirements for the Siting, Construction, Inspection, Upgrade and Expansion of On-site Sewage Treatment and Disposal Systems and for the Transport and Disposal of Septage › Subpart C - DESIGN, CONSTRUCTION, REPAIR, AND REPLACEMENT OF ON-SITE SEWAGE DISPOSAL SYSTEMS › Section 15.225 - Tanks in Series

Current through Register 1525, July 5, 2024
Tanks in series may be approved to satisfy the requirements
				  of
				  310 CMR
				  15.224 provided that:
(a) the number of tanks does not exceed two;
				and
(b) the design criteria of each
				tank corresponds to the requirements for compartmental tanks in
				310 CMR
				15.224.
Code of Massachusetts Regulations › 310 CMR - DEPARTMENT OF ENVIRONMENTAL PROTECTION › Title 310 CMR 15.000 - The State Environmental Code, Title 5: Standard Requirements for the Siting, Construction, Inspection, Upgrade and Expansion of On-site Sewage Treatment and Disposal Systems and for the Transport and Disposal of Septage › Subpart C - DESIGN, CONSTRUCTION, REPAIR, AND REPLACEMENT OF ON-SITE SEWAGE DISPOSAL SYSTEMS › Section 15.226 - Construction of Septic Tanks

Current through Register 1525, July 5, 2024
(1) Septic tanks
				shall be constructed of sound and durable watertight materials not subject to
				excessive corrosion, decay, or frost damage, or cracking or buckling due to
				settlement or backfilling. Septic tanks may be constructed of the following
				materials:
(a) poured-in-place
				concrete;
(b) precast reinforced
				concrete;
(c) fiberglass reinforced
				plastic;
(d) polyethylene;
				or
(e) other materials as approved
				in writing by the Department.
(f)
				metal septic tanks are prohibited.
Code of Massachusetts Regulations › 310 CMR - DEPARTMENT OF ENVIRONMENTAL PROTECTION › Title 310 CMR 15.000 - The State Environmental Code, Title 5: Standard Requirements for the Siting, Construction, Inspection, Upgrade and Expansion of On-site Sewage Treatment and Disposal Systems and for the Transport and Disposal of Septage › Subpart C - DESIGN, CONSTRUCTION, REPAIR, AND REPLACEMENT OF ON-SITE SEWAGE DISPOSAL SYSTEMS › Section 15.227 - Placement and Construction of Tees

Current through Register 1525, July 5, 2024
(1) Inlet
				and outlet tees shall be Schedule 40 PVC and shall extend a minimum of six
				inches above the flow line of the septic tank and be on the center line of the
				septic tank located directly under the clean-out manhole. Tranverse flow
				baffles shall not be used as substitutes for inlet or outlet tees.
(2) The minimum separation between inlet and
				outlet tees shall be no less than the liquid depth of the septic tank and shall
				be the longest direction (which shall not include the diagonal distance) across
				the tank in plan view.
(3) Inlet
				and outlet tees to rectangular tanks shall be set in the end walls or into a
				side wall within 12 inches of the end wall. For circular tanks, the inlet and
				outlet tees shall be set and stabilized on opposite ends of a diameter of the
				tank.
(4) There shall be an air
				space of at least three inches between the tops of the tees and the inside of
				the tank cover. The tops of the tees shall be left open to provide ventilation
				or separate ventilation shall be provided. All outlet tees shall be equipped
				with a gas baffle or a Department approved effluent tee filter.
(5) The inlet pipe elevation shall be no less
				than two inches nor more than three inches above the invert elevation of the
				outlet pipe. The inlet and outlet invert elevations shall be at least 12 inches
				above the high groundwater elevation. If high groundwater (redoximorphic
				features) is determined by soil evaluation in accordance with
				310 CMR 15.100
				through
				15.107
				at the proposed location of the septic tank, the Approving Authority may reduce
				the 12 inch required separation, but in no cases shall it be reduced to less
				than one inch above high groundwater as determined by redoximorphic
				features.
(6) The inlet tee shall
				extend a minimum of ten inches below the flow line. The outlet shall be
				provided with a tee extending below the flow line in accordance with the
				following table:
Liquid Depth in Septic Tank
Depth of Outlet Tee below Flow Line
4 feet
14 inches
5 feet
19 inches
6 feet
24 inches
7 feet
29 inches
8 feet
34 inches
(7)
				Effluent tee filters may be installed in
lieu
of outlet tees
				provided that they are installed in accordance with the manufacturer's
				specifications, include an appropriate outlet cover at grade, and are inspected
				and cleaned at least on an annual basis.
Code of Massachusetts Regulations › 310 CMR - DEPARTMENT OF ENVIRONMENTAL PROTECTION › Title 310 CMR 15.000 - The State Environmental Code, Title 5: Standard Requirements for the Siting, Construction, Inspection, Upgrade and Expansion of On-site Sewage Treatment and Disposal Systems and for the Transport and Disposal of Septage › Subpart C - DESIGN, CONSTRUCTION, REPAIR, AND REPLACEMENT OF ON-SITE SEWAGE DISPOSAL SYSTEMS › Section 15.228 - Placement and Accessibility of Septic Tank

Current through Register 1525, July 5, 2024
(1)
				Septic tanks shall be installed level and true to grade on a level stable base
				that has been mechanically compacted and on to which six inches of crushed
				stone has been placed to minimize uneven settling. If the septic tank is placed
				in fill, proper compaction is required to ensure stability and to prevent
				settling. Septic tanks shall have a minimum cover of nine inches. Systems
				buried greater than nine inches below grade must be equipped with risers on all
				tank top openings and the distribution box.
(2) At least three manholes with readily
				removable impermeable covers of durable material shall be provided. The
				manholes over the inlet and outlet tees shall have a minimum opening of 20
				inches and the center manhole shall have a minimum opening of eight inches. By
				July 1, 2007, manufacturers of fiberglass and polyethylene tanks shall comply
				with the center hole requirement. Access ports shall be placed at the center
				and over each inlet and outlet tee. For compartmental tanks, the center manhole
				shall be placed as access to the compartment connection. Inlet and outlet tees
				shall be made accessible for inspection and maintenance by providing precast
				concrete or equivalent watertight risers (with steps where appropriate) with
				covers over the access ports to within six inches of finish grade for system
				designs in excess of 1,000 gpd. For system designs of 1,000 gpd or less, at
				least one access port shall be accessible within six inches of final grade.
				Manholes brought to final grade shall be secured to prevent unauthorized
				access.
(3) Septic tanks shall be
				accessible for inspection and maintenance. No structures shall be located
				directly upon or above the septic tank access locations which interfere with
				performance, access, inspection, pumping, or repair.
(4) Septic tanks shall be inspected and
				maintained in accordance with
				310 CMR
				15.300 and applicable local
				requirements.
Code of Massachusetts Regulations › 310 CMR - DEPARTMENT OF ENVIRONMENTAL PROTECTION › Title 310 CMR 15.000 - The State Environmental Code, Title 5: Standard Requirements for the Siting, Construction, Inspection, Upgrade and Expansion of On-site Sewage Treatment and Disposal Systems and for the Transport and Disposal of Septage › Subpart C - DESIGN, CONSTRUCTION, REPAIR, AND REPLACEMENT OF ON-SITE SEWAGE DISPOSAL SYSTEMS › Section 15.229 - Pumping to Septic Tanks

Current through Register 1525, July 5, 2024
(1) System designs
				specifying pumping of sewage to a septic tank may be approved by the Approving
				Authority for a single family dwelling provided that the volume of sewage
				pumped is less than 25% of the design flow of the system, the pump discharge
				pipe is connected to the building sewer and:
(a) where a sewage ejector pump (non-grinder
				pump) is used, the discharge flow rate shall be fewer than 60 gallons per
				minute at the design total dynamic head (TDH) and capable of passing a two-inch
				diameter solid, and the septic tank shall have a minimum effective volume of
				1,500 gallons; or
(b) where a
				grinder pump is used, the discharge flow rate shall comply with the discharge
				capacity specified in the State Plumbing Code for sump and ejector pumps in
				sanitary drainage systems, and the septic tank shall either be a
				multi-compartment tank or two tanks in series.
Code of Massachusetts Regulations › 310 CMR - DEPARTMENT OF ENVIRONMENTAL PROTECTION › Title 310 CMR 15.000 - The State Environmental Code, Title 5: Standard Requirements for the Siting, Construction, Inspection, Upgrade and Expansion of On-site Sewage Treatment and Disposal Systems and for the Transport and Disposal of Septage › Subpart C - DESIGN, CONSTRUCTION, REPAIR, AND REPLACEMENT OF ON-SITE SEWAGE DISPOSAL SYSTEMS › Section 15.231 - Dosing Chambers and Pumps

Current through Register 1525, July 5, 2024
(1) A dosing
				chamber shall be required for any system that is not designed to discharge by
				gravity to the soil absorption system, for any system that is designed for the
				intermittent discharge of septic tank or recirculating sand filter effluent,
				and in conjunction with pressure distribution pursuant to
				310 CMR
				15.254(2)  for any system
				with either a design flow of 2,000 gpd or greater, or where multiple soil
				absorption systems are proposed.
(2) All dosing chambers shall have an
				emergency storage capacity above the working level equal to the daily design
				flow of the system, or standby power, and shall be equipped with sensors and
				alarms to protect against high water due to failure of the pump or pump
				controls. It is advisable to provide some emergency storage even if an on-site
				emergency generator is provided. The volume below the working level shall
				include an allowance for the volume of all drainage which may flow back to the
				chamber when pumping has ceased.
(3) The volume of the dosing chamber between
				pump operating levels shall be adequate to assure the entire soil absorption
				system is dosed each cycle in accordance with the required number of cycles per
				day.
(4) Construction and materials
				of dosing chambers shall be in accordance with
				310 CMR
				15.221 and
				15.226.
(5) All dosing chambers shall be designed and
				constructed to withstand a minimum H-10 loading. Any dosing chamber installed
				where there is the potential for vehicles or heavy equipment to pass over it
				shall be designed to withstand an H-20 loading. Dosing chambers shall be
				equipped with one manhole with a minimum opening of 20 inches with a readily
				removable watertight cover of durable material. The access cover shall be
				located at final grade.
(6) Every
				dosing chamber, except for systems serving two dwelling units or less, shall be
				equipped with two pumps the discharge lines of which shall be valved to allow
				dosing of the entire soil absorption system by either pump.
(7) Pumps shall be installed in accordance
				with the manufacturers and the designer's specifications.
(8) Pumps shall operate in the following
				sequence:
(a) pumps off
(b) primary (lead) pump on
(c) backup (lag) pump on and alarm
				on
(d) pumps must
				alternate.
Code of Massachusetts Regulations › 310 CMR - DEPARTMENT OF ENVIRONMENTAL PROTECTION › Title 310 CMR 15.000 - The State Environmental Code, Title 5: Standard Requirements for the Siting, Construction, Inspection, Upgrade and Expansion of On-site Sewage Treatment and Disposal Systems and for the Transport and Disposal of Septage › Subpart C - DESIGN, CONSTRUCTION, REPAIR, AND REPLACEMENT OF ON-SITE SEWAGE DISPOSAL SYSTEMS › Section 15.232 - Distribution Boxes

Current through Register 1525, July 5, 2024
(1) For all gravity
				flow distribution systems, a water tight distribution box designed to provide
				equal distribution of septic tank effluent to the distribution lines of the
				soil absorption system shall be provided between the septic tank and soil
				absorption system.
(2) Construction
				of the distribution box shall be in conformance with the provisions of
				310 CMR
				15.221 (general construction requirements)
				and 15.226 (septic tank construction), with the following exceptions:
(a) The distribution box may be constructed
				of plastic or other materials approved by the Department if it is installed
				level and true to grade on a level stable base that has been mechanically
				compacted and onto which six inches of crushed stone has been placed to
				minimize uneven settling or on a concrete pad which is at least six inches in
				thickness and 1.5 times the bottom surface area of the distribution
				box.
(b) The minimum inside
				dimension of the distribution box, regardless of material, shall be 12
				inches.
(c) The minimum wall
				thickness for reinforced concrete shall be two inches.
Code of Massachusetts Regulations › 310 CMR - DEPARTMENT OF ENVIRONMENTAL PROTECTION › Title 310 CMR 15.000 - The State Environmental Code, Title 5: Standard Requirements for the Siting, Construction, Inspection, Upgrade and Expansion of On-site Sewage Treatment and Disposal Systems and for the Transport and Disposal of Septage › Subpart C - DESIGN, CONSTRUCTION, REPAIR, AND REPLACEMENT OF ON-SITE SEWAGE DISPOSAL SYSTEMS › Section 15.233 - Siphons

Current through Register 1525, July 5, 2024
The use of siphons for on-site systems, including shared
				  systems, is prohibited.