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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 15.240 - Soil Absorption Systems

Current through Register 1525, July 5, 2024
(1) On-site
				subsurface sewage disposal systems shall be located in an area where there is
				at least a four foot depth of naturally occurring pervious soil below the
				entire area of the soil absorption area and reserve area unless a variance is
				issued in accordance with the provisions of
				310 CMR
				15.415(2). The four foot
				stratum must be free of impervious and unsuitable materials.
(2) Effluent from any component of an on-site
				sewage disposal system shall not be disposed of by direct discharge to any
				waters of the Commonwealth, unless in compliance with a permit issued pursuant
				to
				314 CMR 3.00 (surface water
				permitting) or
				314 CMR 5.00 (groundwater
				permitting).
(3) Soil absorption
				systems shall be designed as an integral part of the system. Septic tank
				effluent is to be distributed throughout the soil absorption system by means of
				effluent distribution lines so that the effluent can migrate through the
				underlying soil column under unsaturated flow conditions. All soil absorption
				systems shall achieve the following objectives of the soil treatment process:
(a) maximum stabilization of organic wastes
				in the effluent;
(b) removal of
				pathogenic organisms, nutrients, and particulates;
(c) recharge of the ground-water table with
				adequately treated effluent with minimal attendant pollution of the
				groundwater; and
(d) disposal of
				the effluent without discharge to the ground surface or the creation of any
				nuisance.
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 15.241 - System Venting

Current through Register 1525, July 5, 2024
Systems to be located either in whole or in part under
				  driveways, parking or turning areas or other areas of impervious material shall
				  be designed to achieve proper venting of the system according to the following
				  criteria:
(a) the disposal area
				distribution system shall be piped to the atmosphere using the same diameter
				pipe as the distribution system;
(b) the vent pipe shall be designed to
				prevent entrance of animals or precipitation and shall be backfilled tightly to
				prevent seepage of surface water into the system;
(c) the vent pipe shall be located beyond the
				limit of the impervious area subject to vehicular traffic;
(d) where trenches, fields or beds are used,
				the end of each distribution lateral shall be connected to one or more
				vent(s);
(e) where pits are used,
				the vent shall extend under the cover of the pit; and
(f) the riser and above ground components of
				the vent shall be constructed of durable, non-corrosive materials.
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 15.242 - LTAR - Effluent Loading Rates

Current through Register 1525, July 5, 2024
(1) The effluent
				loading rates set forth below are adjusted to account for the long term
				acceptance rate (LTAR) of the proposed soil absorption system. The LTAR is
				limited in large part by both the texture of the most hydraulically restrictive
				soil layer included within the four-foot zone beneath the proposed soil
				absorption system and the formation of a biomat based on the strength of
				effluent applied to the soil. As such the effluent loading rates have been
				based on the strength of typical settled sanitary sewage and may be adjusted
				proportionately downward if the proposed effluent strength is determined by the
				local Approving Authority or the Department to exceed that of typical sanitary
				sewage. Soil textural classes and soil types comprising the classes are defined
				in
				310 CMR
				15.243 and
				310 CMR 15.244
				based upon the general soil classification used by the U.S. Department of
				Agriculture.
(a) The following effluent
				loading rates apply:
EFFLUENT LOADING RATE
gpd/sq.ft
(cm/day)
PERC. RATE
SOIL CLASS
(min./inch)
CLASS I
CLASS II
CLASS III
CLASS IV
:5
.74 (3.0)
0.60 (2.5)
-
-
6
0.70 (2.9)
0.60 (2.5)
-
-
7
0.68 (2.8)
0.60 (2.5)
-
-
8
0.66 (2.7)
0.60 (2.5)
-
-
10
-
0.60 (2.5)
-
-
15
-
0.56 (2.3)
0.37 (1.5)
-
20
-
0.53 (2.2)
0.34 (1.4)
-
25
-
0.40 (1.6)
0.33 (1.3)
-
30
-
0.33 (1.3)
0.29 (1.2)
-
40
-
-
0.25 (1.0)
-
50
-
-
0.20 (0.8)
0.20 (0.8)
60
-
-
0.15 (0.6)
0.15 (0.6)
(b)
				The effluent loading rates set forth below may be used in place of those listed
				above at 310 CMR 15.242(1)(a) when the effluent from a septic tank, installed
				in compliance with
				310 CMR 15.223, is
				distributed over the soil absorption system using pressure distribution
				designed in compliance with
				310 CMR
				15.254(2). However, the
				effluent loading rates set forth below cannot be used in conjunction with
				reductions to the soil absorption system approved under 310 CMR 15.280 through
				15.289
				or
				310 CMR
				15.404 through
				15.405.
SEPTIC TANK EFFLUENT LOADING RATE WITH PRESSURE DISTRIBUTION
gpd/sq.ft
(cm/day)
PERC. RATE
SOIL CLASS
(min./inch) CLASS I
CLASS II
CLASS III
CLASS IV
10 -
0.63(2.6)
15 -
0.61(2.5)
0.41(1.7)
20 -
0.58(2.4)
0.37(1.5)
25 -
0.44(1.8)
0.36(1.4)
30 -
0.38(1.6)
0.33(1.3)
40 -
-
0.29 (1.2)
50 -
-
0.25 (1.0)
0.25 (1.0)
60 -
-
0.20 (0.8)
0.20 (0.8)
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 15.243 - Types of Soil Textural Classes

Current through Register 1525, July 5, 2024
(1) The
				following soil textural classes apply to soil types of which they are composed:
CLASS I
Sands, Loamy Sands
CLASS II
Sandy Loams, Loams
CLASS III
Silt Loams, Sandy Clay Loams with less than 27%
								clay, Silt
CLASS IV
Clays, Silty Clay Loams, Sandy Clay Loams with 27%
								or more Clay, Clay Loams and Silty Clays
(2)
				Textural Classifications are made based on the relative proportion of sand,
				silt and clay in the soils and in accordance with the following textural
				triangle:
SOIL TEXTURAL TRIANGLE
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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 15.244 - Types of Soils

Current through Register 1525, July 5, 2024
Sands:
Soil is 85% or more sand and the percentage of silt
								plus 1.5 times the percentage of clay is 15 or less.
Loamy sands:
At the upper limit soil is 85 to 90% sand and the
								percentage of silt plus 1.5 times the percentage of clay is 15 or less; at the
								lower limit, soil is 70 to 85% sand and the percentage of silt plus twice the
								percentage of clay is 30 or less.
Sandy loams:
Soil is 20% or less clay and 52% or more sand and
								the percentage of silt plus twice the percentage of clay exceeds 30; or soil is
								less than 7% clay, less than 50% silt, and between 43 and 52% sand.
Loam:
Soil is 7 to 27% clay, 28 to 50% silt, and less
								than 52% sand.
Silt loam:
Soil is 50% or more silt and 12 to 27% clay; or 50
								to 80% silt and less than 12% clay.
Silty clay loam:
Soil is 27 to 40% clay and less than 20%
								sand.
Clay:
40% or more clay, less than 45% sand, and less than
								40% silt.
Silt:
80% or more silt and less than 12% clay.
Sandy clay loam:
20 to 35% clay, less than 28% silt, and more than
								45% sand.
Clay loam:
27 to 40% clay and 20 to 46% sand.
Sandy clay:
35% or more clay and 45% or more sand.
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 15.245 - Soil Absorption System Siting Requirements

Current through Register 1525, July 5, 2024
(1)
				Systems serving new construction shall not be sited in areas with percolation
				rates slower than 60 minutes per inch.
(2) When recorded percolation rates are
				between those listed in
				310 CMR
				15.242, the next slower rate shall be used
				for design purposes.
(3) Surface
				and subsurface drainage shall be directed away from the soil absorption
				system.
(4) Approval of a soil
				absorption system in soils with a recorded percolation rate of between 60 and
				90 minutes per inch may be granted only for upgrades of existing systems with
				no increase in design flow. In such cases, the soil absorption system design
				shall be based on a maximum effluent loading rate of 0.15 gpd/square
				foot.
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 15.246 - Excavation and Flagging of Soil Absorption System

Current through Register 1525, July 5, 2024
(1) Excavation for construction of a soil
				absorption system may be by mechanical means, provided care is taken to assure
				that the soil at the bottom of the excavation is not compacted or smeared. The
				bottom and sides of the excavation shall be level and scarified. Vehicular
				traffic and parking of vehicles or equipment in or on the area of the soil
				absorption system should be avoided at all times prior, during and after
				construction of the system.
(2)
				Prior to the installation of the soil absorption system and until receipt of a
				Certificate of Compliance from the Approving Authority in accordance with
				310 CMR
				15.021, the perimeter of the soil absorption
				system shall be staked and flagged to identify the location of the soil
				absorption system and prevent the use of such area for all activities which
				might damage the soil absorption system. Such flagging is not intended to
				preclude the final grading and landscaping of the area of the soil absorption
				system. Stockpiling of materials or equipment within the area is
				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 15.247 - Aggregate

Current through Register 1525, July 5, 2024
Aggregate shall be required for all soil absorption systems,
				  unless otherwise approved in writing by the Department in accordance with 310
				  CMR 15.280 through
				  15.288,
				  according to the following specifications:
(a) Base aggregate for leaching structures
				shall be provided from below the elevation of the crown of the distribution
				line(s) to the bottom elevation of the soil absorption system and shall consist
				of double washed stone ranging from ¾ to 1½ inches in diameter
				and shall be free of iron particles, fines and dust in place;
(b) A minimum of a two-inch layer of double
				washed stone ranging from c to ½ inch diameter and free of iron
				particles, fines and dust in place shall cover the base aggregate to prevent
				intrusion of fine textured soils to the system. Geotextile fabric may be
				substituted for the minimum two-inch layer of double washed stone.
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 15.248 - Reserve Area

Current through Register 1525, July 5, 2024
(1) Systems for new
				construction or increased flow designed and approved in accordance with
				310 CMR 15.000 shall include
				a reserve area sufficient to replace the primary soil absorption system. The
				area required for the reserve area shall be calculated in accordance with
				310 CMR
				15.242 (effluent loading rates), based on the
				percolation rate in the reserve area.
(2) No permanent buildings or other
				structures shall be constructed on the reserve area.
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 15.249 - Design Criteria for Soil Absorption Systems

Current through Register 1525, July 5, 2024
(1)
				Every soil absorption system shall consist of one or more trenches, beds,
				fields, pits, galleries or chambers.
(2) Effluent disposal area requirements shall
				be determined in accordance with
				310 CMR
				15.242.
(3) System designs employing equipment
				designed to distribute effluent without the use of aggregate
				(
i.e.
, "gravelless systems") are prohibited except in
				accordance with the procedures set forth at 310 CMR 15.280 through
				15.288.
(4) Soil absorption systems for Class III and
				IV soils with percolation rates greater than 60 minutes per inch shall not
				include beds or fields except in accordance with
				310 CMR
				15.245(4).
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 15.251 - Trenches

Current through Register 1525, July 5, 2024
(1) Trench Design Specifications:
(a) Length (each trench) 100 feet
				maximum
(b) Width (each trench) 2
				feet minimum 3 feet maximum
(c)
				Effective Depth: shall be equal to the depth of the trench below the invert of
				the distribution pipe with a minimum of six inches up to a maximum of two
				feet.
(d) The minimum separation
				distance between any two trenches shall be two times the effective width or
				depth of each trench, whichever is greater, or where the area between trenches
				is designated as reserve area, three times the effective width or depth of each
				trench, whichever is greater.
(e)
				The effective leaching area shall be calculated using the bottom area and a
				maximum of two feet (per side) of side wall area for each trench.
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 15.252 - Beds or Fields

Current through Register 1525, July 5, 2024
(1) The use of
				leaching beds or fields is restricted to systems with a calculated design flow
				of less than 5,000 gpd per leaching bed or field.
(2) Bed or field specifications:
(a) Minimum number of distribution lines =
				2.
(b) Length - 100 feet
				maximum.
(c) Slope of distribution
				lines - 0.005 feet per foot.
(d)
				Separation distance between lines - six feet maximum.
(e) Lateral separation distance between lines
				and edge of the bed - four feet maximum.
(f) Separation distance between adjacent
				beds/fields - ten feet.
(g)
				Aggregate depth (below the invert of the distribution lines) - six inches
				minimum, 12 inches maximum.
(h)
				Distribution lines - refer to
				310 CMR 15.251(5) through
				(10) (Trenches).
(i) Effective leaching area - shall include
				only the bottom area, not the sidewalls.
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 15.253 - Pits, Galleries, or Chambers

Current through Register 1525, July 5, 2024
(1) Pit,
				Gallery or Chamber design specifications:
(a)
				Effective Depth - A maximum of two feet of sidewall depth below the invert of
				the inlet per unit shall be used when calculating the effective leaching
				area.
(b) Surrounding Aggregate - 1
				foot minimum per side.
4 feet maximum per side.
(c) Separation Distance Between Units - two
				times the effective width or depth, whichever is greater.
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 15.254 - Pressure Dosing and Pressure Distribution

Current through Register 1525, July 5, 2024
(1)
Gravity Distribution
.
(a) Dosing systems employing gravity
				distribution to the soil absorption system shall be restricted to systems
				designed to accept less than 2,000 gpd.
(b) The dosing chamber and pumps shall be
				designed in accordance with
				310 CMR
				15.231.
(c) Distribution lines to the soil absorption
				system shall have a minimum diameter of two inches and shall otherwise be in
				conformance with the provisions of
				310 CMR 15.251
				(Trenches).
(d) Septic tank
				effluent shall be dosed to the soil absorption system at a rate based on volume
				and number of doses that prevent the ponding of the effluent in the soil
				absorption system.
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 15.255 - Construction in Fill

Current through Register 1525, July 5, 2024
(1) Any system
				where fill is required to replace topsoil, peat or other unsuitable or
				impervious soil layer above the requisite four feet of naturally occurring
				pervious material is a system constructed in fill. Any system constructed in
				fill which extends either wholly or partially above natural grade for the
				purpose of complying with
				310 CMR
				15.212 (depth to groundwater) is a mounded
				system. All soil absorption systems constructed in fill shall be sized using
				the soil class of the underlying naturally occurring pervious
				material.
(2) The finished side
				slopes of a mounded system shall not be steeper than 3:1 (horizontal:vertical).
				A minimum 15 foot horizontal separation distance shall be provided between the
				soil absorption area and the adjacent side slope as measured from the edge of
				the top of the two inch layer of c to ½ inch washed stone aggregate or
				geotextile fabric cover. The toe of the slope shall be a minimum of five feet
				from any property line, or a swale or other drainage system directing runoff
				away from the adjacent property shall be installed. Adjustments to the above
				horizontal separation may be allowed if a suitable impervious barrier is
				installed to prevent potential sewage breakout. The impervious barrier shall
				meet the following requirements:
(a) the
				impervious barrier shall be designed by a Massachusetts Registered Sanitarian
				or a Massachusetts Registered Professional Engineer.
(b) construction of the impervious barrier
				shall be supervised by the designer.
(c) prior to issuance of a Certificate of
				Compliance, the applicant shall submit to the Approving Authority an as-built
				plan prepared and certified by the designer that the impervious barrier has
				been constructed in accordance with the approved design plan.
(d) the elevation of the top of the
				impervious barrier shall be no lower than the "breakout" elevation, which is
				the elevation of the top of the two inch layer of c inch to ½ inch
				washed stone aggregate cover.
(e)
				the recommended distance from the impervious barrier to the edge of the soil
				absorption system closest to the barrier should be at least ten feet.
(f) where a retaining wall to stabilize the
				slope is required and also is proposed as an impervious barrier, in addition to
				meeting the requirements in 310 CMR 15.255(2), it shall be constructed of
				suitable structural material and be designed by a Massachusetts Registered
				Professional Engineer.
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 15.260 - Tight Tanks

Current through Register 1525, July 5, 2024
(1) Approval of a
				tight tank may be granted only to eliminate a failed on-site system when no
				other feasible alternative to upgrade the system in accordance with
				310 CMR 15.201
				through
				15.293
				exists, except as provided in 310 CMR 15.260(8). Tight tanks shall not be
				approved for new construction or for increased flow to existing systems except
				as approved by the Approving Authority for:
(a) boat waste pump-out facilities where no
				other feasible alternative exists; or
(b) to serve buildings necessary for the
				operation of a public water supply where it is not feasible to connect to a
				sewer or to construct a system in compliance with
				310 CMR 15.000.
(c) to serve publicly owned and operated
				seasonal structures where it is not feasible to connect to a sewer or to
				construct a system in compliance with
				310 CMR 15.000.
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 15.262 - Greywater Systems

Current through Register 1525, July 5, 2024
(1) Greywater from
				residential, commercial and public facilities may be discharged or reused in
				accordance with the provisions of 310 CMR 15.262. For purposes of 310 CMR
				15.262, public facilities shall include facilities owned or operated by a local
				political subdivision of the Commonwealth or an agency of the Commonwealth or
				federal government.
(2)
Soil Absorption System for Greywater
. When the total
				discharge to an on-site subsurface sewage disposal consists entirely of
				greywater as defined in
				310 CMR 15.002
				(Greywater), the following shall apply:
(a)
				the minimum soil absorption area for residential systems, as determined by the
				results of the site evaluation set forth in
				310 CMR 15.100
				through
				15.107
				and in accordance with the appropriate long-term acceptance rate criteria
				specified in
				310 CMR
				15.242, for design of a soil absorption
				system for new construction of a facility, or for upgrades to existing systems
				may be reduced by no more than 50%, provided, however, that for new
				construction, the owners of residential facilities shall demonstrate that a
				system in full compliance with
				310 CMR 15.000 can be
				installed on the facility to serve the proposed design flow. Reductions for
				commercial and public facility systems shall be determined on a case-by-case
				basis as approved by the Department in accordance with
				310 CMR
				15.203(6).
(b) the depth of soil placed as backfill over
				the system shall be at least nine inches, placed in lifts and sufficiently
				compacted to prevent depression due to settling which may intercept surface
				runoff above the system. Backfill must be clean and free of stones greater than
				two inches in size. Tailings, clay, or similar material is
				prohibited.
(c) in a remedial
				upgrade of an existing system with no increase in flow, the required separation
				between the bottom of the soil absorption system and the high groundwater
				elevation may be reduced to a minimum of two feet in soils with a recorded
				percolation rate of more than two minutes per inch or a minimum of three 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 15.280 - Approval of Alternative Systems

Current through Register 1525, July 5, 2024
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 15.282 - Types of Alternative Systems

Current through Register 1525, July 5, 2024
Alternative systems proposed may include, but shall not be
				  limited to, any of the following:
(1)
				humus or other composting toilets;
(2) alternative mounded systems (such as the
				"Wisconsin mound") designed to overcome limiting site conditions;
(3) any system designed to chemically or
				mechanically aerate, filter, separate or pump the liquid, semi-solid or solid
				constituents in the system; or
(4)
				any system designed specifically to reduce, convert, or remove nitrogenous
				compounds, phosphorus, or pathogenic organisms (including bacteria and viruses)
				by biological, chemical, or physical means.
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 15.283 - Process for Review of Alternative System Proposals

Current through Register 1525, July 5, 2024
(1) A person seeking approval of an
				alternative system shall prepare and submit a formal application to the
				Department, or an agent authorized by the Department. No application to the
				Department is required for use of an alternative system that has been certified
				for general use pursuant to
				310
				CMR 15.288, provided that such use is
				consistent with any conditions established in the certification.
(2) For site specific piloting use approval
				pursuant to
				310
				CMR 15.285, the applicant shall obtain the
				approval of the Local Approving Authority prior to seeking approval by the
				Department.
(3) Any proposal to
				construct, upgrade or expand any existing system using an alternative system of
				any type shall be subject to the permitting requirements set forth at
				314 CMR
				5.00 (discharges of pollutants to groundwater) unless
				the applicant complies with the terms and conditions of
				310
				CMR 15.281 through
				15.288.
(4) The Department or an agent authorized by
				the Department may request additional information regarding alternative system
				proposals in the course of its application review, pursuant to
				310 CMR 4.00:
Timely
				Action Schedule and Fee Provisions
, and may consider any such
				information submitted when acting on the application.
(5) When using alternative systems designed
				under 310 CMR 15.280 through
				15.288,
				if the facility design and operation will result in flows significantly
				different from the values listed in
				310 CMR
				15.203(1) through (5), the
				alternative technology shall reflect the actual range of flows and loadings
				that the facility is expected to generate rather than the peak flow values
				listed in
				310 CMR
				15.203(1) through (5). The
				applicant, with the approval of the Department, may request to demonstrate a
				more appropriate design flow in accordance with
				310 CMR
				15.203(6). Notwithstanding
				the requirements of
				310 CMR
				15.203(6), the Department
				may establish a design flow thereunder that is based on the actual range of
				flows rather than based on 200% of average water meter readings. The soil
				absorption system and other units shall still be designed in accordance with
				310 CMR
				15.203(1) through (5) and
				15.242.
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 15.284 - Approval for Remedial Use

Current through Register 1525, July 5, 2024
(1) The purpose of
				approval for remedial use is to allow for the rapid approval of an alternative
				system that is likely to improve existing conditions at a particular facility
				or facilities currently served by a failed, failing or nonconforming
				system.
(2) Remedial use of an
				alternative system shall be allowed where the Department finds that all of the
				following conditions are met:
(a) the proposed
				use of the alternative system is for upgrade of a failed, failing or
				nonconforming existing system(s);
(b) the design flow is less than 10,000
				gallons per day, and there is no increase in design flow to be served by the
				proposed alternative system;
(c)
				the applicant has established, through evidence of effective past performance
				of the alternative system over a period of at least one year of general usage
				in other states where relevant physical and climatological conditions are
				similar to those in Massachusetts, that the alternative system will provide a
				level of environmental protection
1. at least
				equivalent to that of a system designed and constructed in accordance with
				310 CMR 15.100
				through
				15.255, for
				use where connection to a sewer system is not feasible, or
2. at least equivalent to a sewer system, for
				use where connection to a sewer system is feasible.
The Department may waive this requirement in situations where
				  such evidence is already on file with the Department for that system. When
				  relying on system performance in other states, all available information
				  including but not limited to a copy of the other state's written approval,
				  testing and performance data shall be provided.
(d) the Local Approving Authority has found
				that that conditions of 310 CMR 15.284(2)(a) through (c) are satisfied;
				and
(e) the applicant has made
				arrangements through contract with a vendor or in another manner acceptable to
				the local Approving Authority and the Department to ensure that necessary
				operation and maintenance of the alternative system will be performed
				appropriately.
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 15.285 - Approval for Piloting

Current through Register 1525, July 5, 2024
(1) Approval for
				piloting is intended to provide field testing and technical demonstration that
				a particular alternative system can or cannot function effectively under
				relevant physical and climatological conditions at one or more pilot
				facilities. Although information obtained during piloting is likely to be
				relevant to long term operation and maintenance concerns about a particular
				alternative system, approval for piloting is not intended, in and by itself, to
				provide a full evaluation of these issues. Approvals for site-specific piloting
				may be issued to technology proponents or to individuals seeking to use an
				alternative system at a particular Facility.
(2) The Department shall approve a number of
				pilot facilities, not greater than 15, at which piloting may be conducted for
				an alternative system, and shall approve each individual proposed piloting
				facility prior to use of the alternative system on that facility. The use of
				multiple piloting sites is strongly encouraged and may be required by the
				Department. Piloting facilities must comply with one or more of the following
				conditions:
(a) the proposed use of the
				alternative system will modify or replace an existing system provided there is
				no increase in design flow to the system;
(b) the proposed use of the alternative
				system is for new construction or increased flow to serve a facility for which
				an on-site sewage disposal system in compliance with
				310 CMR 15.000 exists on
				site, or for which a site evaluation for an on-site system in compliance with
				310 CMR 15.100
				through
				15.255 has
				been approved by the Approving Authority;
(c) the proposed use of the alternative
				system is for new construction or increased flow to serve a facility which has
				access to a municipal sewer, as evidenced by a local connection or discharge
				permit, to which any discharge from the proposed system will be made should the
				alternative system fail; or
(d) the
				site is owned or controlled by an agency of the Commonwealth or of the federal
				government and has been approved by the Department.
A local Approving Authority may impose additional conditions
				  on the use of alternative systems approved for piloting under
				  310 CMR 15.000 only in
				  accordance with regulations adopted pursuant to
				  310 CMR
				  15.003(3).
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 15.286 - Provisional Approval of Alternative System

Current through Register 1525, July 5, 2024
(1) Provisional approval is intended to
				evaluate alternative systems that appear technically capable of providing
				levels of protection at least equivalent to those of standard on-site disposal
				systems, to determine whether, under actual field conditions in Massachusetts
				with broader usage than a controlled pilot setting, general use of the
				alternative system will provide such protection, and to determine whether any
				additional conditions addressing long term operation, maintenance and
				monitoring considerations are necessary to ensure that such protection will be
				provided.
(2) The Department shall
				grant provisional approval for use of an alternative system where connection to
				a sewer is not feasible if the applicant demonstrates that the alternative
				system is likely to provide a level of environmental protection at least
				equivalent to that of a system designed and constructed in accordance with
				310 CMR 15.100
				through
				15.255. The
				Department shall grant provisional approval for use of an alternative system
				where connection to a sewer is feasible if the applicant demonstrates that the
				alternative system is likely to provide a level of environmental protection at
				least equivalent to that of a sewer in the following manner:
(a) evidence, satisfactory to the Department,
				of effective past performance of the alternative system over a period of at
				least two years of general usage in one or more states where relevant physical
				and climatological conditions are comparable to those in Massachusetts;
				or
(b) successful completion of
				piloting pursuant to
				310 CMR
				15.285, or equivalent piloting in one or more
				states where relevant physical and climatological conditions are comparable to
				those in Massachusetts. Piloting shall be considered successful when at least
				75% of piloted systems have performed at the relevant level for at least 12
				months.
When relying on system performance in other state's, all
				  available information including but not limited to a copy of the other state's
				  written approval, testing and performance data shall be provided.
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 15.289 - Humus/Composting Toilets

Current through Register 1525, July 5, 2024
(1)
				Humus/Composting Toilets are certified for general use subject to the following
				conditions:
(a) There shall be no liquid
				wastewater discharge from the humus/composting toilet. If the humus/composting
				toilet produces a liquid by-product that is not recycled through the toilet,
				the liquid by-product must be either:
1.
				discharged through a greywater system on the facility that includes a septic
				tank and leaching system; or
2.
				removed by a licensed septage hauler and properly disposed.
Any other disposal of a liquid by-product requires specific
				  approval by the Department.
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 15.290 - Shared Systems

Current through Register 1525, July 5, 2024
(1) An Approving
				Authority may allow the use of shared systems, subject to any special
				conditions established pursuant to
				310 CMR
				15.293, to serve two or more facilities that
				will result from division of a Facility, for upgrade of existing systems, for
				new construction, or for increased flow to an existing system, in accordance
				with 310 CMR 15.290 through
				15.292.
(2) Any application for use of a shared
				system shall include the following:
(a)
				complete plans and specifications for the system as required by
				310 CMR 15.201
				through
				15.255;
(b) a proposed operation and maintenance plan
				for the shared system;
(c) a
				description of the form of ownership which each component of the system serving
				more than one Facility will take, together with relevant legal documentation
				describing or establishing that ownership including, without limitation,
				easements, condominium master deed, or homeowners' association documents. All
				forms of private ownership of system components serving more than one Facility
				shall establish that each user of the system has the legal ability to
				accomplish any necessary maintenance, repair, or upgrade of the
				component;
(d) a description of the
				financial assurance mechanism proposed to ensure effective long-term operation
				and maintenance of the system. Acceptable financial assurance mechanisms may
				include, but are not limited to, an escrow account, letter of credit,
				performance bond, or insurance policy, which names the Approving Authority as
				beneficiary, and which provides for upgrade of the shared system in the event
				the shared system fails to protect public health, safety, welfare or
				environment pursuant to the criteria established in
				310
				CMR 15.303. A copy of the final financial
				assurance mechanism shall be provided to the Approving Authority prior to
				construction of the system; and
(e)
				a copy of a proposed Grant of Title 5 Covenant and Easement essentially
				identical to that contained in
				310 CMR 15.000:
Appendix 1
shall be recorded and/or registered with the
				appropriate Registry of Deeds and/or Land Registration Office within 30 days of
				the Approving Authority's approval of the Covenant and Easement. The applicant
				shall file a certified Registry copy of this Covenant and Easement with the
				Approving Authority within 30 days of its date of recordation and/or
				registration, and prior to construction of the system.
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 15.291 - Division of a Facility and Upgrades Using Shared Systems

Current through Register 1525, July 5, 2024
(1) The Approving Authority may allow use of
				shared systems for upgrade of existing systems or to serve two or more
				facilities that will result from division of a Facility without granting a
				variance pursuant to
				310 CMR
				15.410 through
				15.413
				only where:
(a) the proposed shared system
				satisfies all technical requirements of
				310 CMR 15.100
				through
				15.293
				without the need for a variance except setbacks from property lines between
				facilities served by the shared system;
(b) there will be no new construction or
				increase in design flow from the facility or facilities to be served by the
				shared system;
(c) the applicant
				proposes institutional arrangements as described in
				310 CMR
				15.290(2)(c), and records a
				Grant of Title 5 Covenant and Easement essentially identical to that contained
				in
				310 CMR 15.000:
Appendix 1
, in accordance with
				310 CMR
				15.290(2)(e); and
(d) the applicant provides the Approving
				Authority with the insurance policy or other comparable financial assurance
				mechanism required pursuant to
				310 CMR
				15.290(2)(d).
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 15.292 - New Construction or Increased Flow to Existing Systems and Division of a Facility Using Shared Systems

Current through Register 1525, July 5, 2024
(1) The
				Approving Authority may allow use of shared systems for new construction,
				increased flow to existing systems, or to serve two or more Facilities that
				will result from division of a Facility without granting a variance only where:
(a) the proposed shared system satisfies all
				technical requirements of
				310 CMR 15.100
				through
				15.293
				except setbacks from property lines between facilities served by the shared
				system;
(b) with the exception of a
				shared system serving a cluster development as defined in
				310 CMR 15.002, the
				applicant demonstrates that the design flow from the facility or facilities to
				be served by the shared system does not exceed the design flow which could have
				been constructed in compliance with
				310 CMR 15.000 without the
				use of a shared system;
(c) the
				applicant proposes institutional arrangements as described in
				310 CMR 15.290(2)(c)
				 and records a Grant of Title 5 Covenant and
				Easement essentially identical to that contained in
				310 CMR 15.000:
Appendix 1
, in accordance with
				310 CMR
				15.290(2)(e); and
(d) the applicant provides the Approving
				Authority with the financial assurance mechanism required by
				310 CMR
				15.290(2)(d).