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Hanover MA.02339 �,
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15.203 continued 0,/^ o,
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ALLOWABLE
GPD FOR
GALLONS SYSTEM
TYPE OF ESTABLISHMENT UNIT PER DAY DESIGN
• (2)RESIDENTIAL
• Bed&Breakfast per bedroom 110
Bed&Breakfast 440
per bedroom 110
with restaurant open
to public add per seat 35 1000
Camp, resident,mess hall per person* 10
Camp, day,washroom per person 10
• and toilets
Camp, day, mess hall per person 3
Campground, showers and toilets per site 90
Family Dwelling, Single per bedroom 110 330**
Family Dwelling,Multiple per bedroom 110 ***
Family Mobile Home Park per mobile home 300
Motel,Hotel,Boarding per bedroom 110
House
Retirement Mobile
Home Park per site 150
Housing for the Elderly per unit 150
Work or Construction Camp per person 50
* Person in the context of 310 CMR 15.203 shall mean an individual.
** A system may be designed for flows of 220 gpd, if a deed restriction limiting use of the dwelling to
two bedrooms is provided, as described in the definition of"bedroom"in 310 CMR 15.002.
*** The number of bedrooms in a condominium shall be as specified in the Master Deed. Establishment
of bedrooms in excess of the specified number shall be considered an increase in design flow.
(3) COMMERCIAL
Amusement Center per sq.ft. 2
Airport 1000
Barber Shop/Beauty Salon per passenger 5 150
per chair 100
Bowling Alley per alley . 100
Country Club, dining room per seat • 10
Country Club, snack bar or
lunch room per seat 10
Country Club,lockers and
showers per locker 20
Doctor Office per doctor 250
Dentist Office per chair 200
Factory or Industrial Plant
without cafeteria per person 15
Factory or Industrial Plant
with cafeteria per person 20
Gasoline Station per island**** 75
with service bays 300
per bay 125
**** Plus flows for bays,if any
Kennel/Veterinary Office per kennel 50
Lounge, Tavern per seat 20
Marina per slip 10
Movie Theater 500
per seat 5
Non-single family/ per washing 400
1111,
automatic clothes washer machine
Office building per 1000 sq.ft. 75
200
11/3/95
310 CMR-510
t
310 CMR: DEPARTMENT OF EtiVIRO METAL PROTECTION
15.203: continued
(6) System design flows for facilities other than those listed above shall be established, with
thapproval of the Department, in relation to actual meter readings of established flows from known t
or similar installations. In those instances,design flows shall be based on 200% of average water
meter readings in.order to assimilate maximum daily flows.
(7) In schools, flows generated from sinks or other drains receiving wastes from science
laboratories,graphics arts classrooms, or vocational school activities,including, but not limited to,
automotive repair painting, or metal fabrication are classified industrial wastes and shall be
directed pursuant to an appropriate permit, to a sewer,if a sewer connection is feasible and,if not,
then to an industrial waste holding tank approved by the Department or an approved hazardous
waste collection receptacle.
15.210: Setback Requirements and Loading Limitations for Locatine and Desienine Systems
15.211: Minimum Setback Distances
(1) All systems must conform to the minimum setback distance for septic tanks and soil
absorption systems, including reserve area, measured in feet and as set forth below. Where more
than one setback applies, all setback requirements shall be satisfied.
Soil Absorption
•
Septic Tank System
Property Line 10
Cellar Wall or 10
Swimming Pool (inground) 10 20
Slab Foundation 10
Water Supply Line (pressure) 10
1
Surface Waters (except wetlands) 10[1]
Bordering Vegetated Wetland (BVW), 25 50 .
Salt Marshes, Inland and Coastal Banks 25
Surface Water Supply l 50
Reservoirs and Impoundments 400
Tributaries to Surface 400
Water Supplies 200
Wetlands bordering Surface Water Supply 200
or Tributary thereto 100
Certified Vernal Pools 100
Private Water Supply Well or Suction Line 50 100[2]
50 100
Public Water Supply Well
(2) (2)Irrigation Well
Open, Surface or Subsurface Drains which 10 25
discharge to Surface Water Supplies or
tributaries thereto 50
Other Open, Surface or Subsurface Drains 100
(excluding foundation drains) which
intercept seasonal high groundwater
table [3] 25
Other Open, Surface or Subsurface Drains 50
(excluding foundation drains) 5
Leaching Catch Basins & 10
Dry Wells 10
Downhill Slope 25
not applicable 15[4]
[1] Disposal facilities shall also be at least 1$inches below water supply lines. Wherever
sewer lines must cross water supply lines, both pipes shall be constructed of class 150
pressure pipe and shall be pressure tested to assure watertightness. 4111
•
3/24/95 (Effective 3/31/95)
310 CMR - 512
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44C b 7 • pplicant demonstrates that a combination of inherent physical limitations cpon the
u tnent of the facility in question and/or recorded publicly- and/or privately-imposed
� P and development restrictions and/or conservation easements upon the facility in
land use
question and/or adjacent land areas result in a net rate of 440 gpd or less per acre across the
facility and adjacent land areas,although not on every individual acre comprising the facility,
and the plan has been approved in writing by the approving authority and, in the case of
recorded land use and development restrictions and/or conservation easements on adjacent
land r-eas, approved by the Department and the owner. The plan will have been deemed
appr^ved by the Department if, within 60 days of receipt of such plan, the Department fails,
in writing:
(a) to request additional information from the applicant; or
(b) grant a written approval,which may include any special conditions the Department
believes appropriate to protect public health, safety, or welfare or the environment; or
(c) to deny the approval of the plan.
In the event the Department requests additional information from the applicant,the 60 day
period for Department review shall commence upon receipt of such additional information.
15.217: Systems with Enhanced Nitrogen Removal
(1) The nitrogen loading limitations established in 310 CMR 15.214 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 (groundwater discharge program).
(2) For systems with a design flow below 2000 gpd, an increase in calculated allowable
nutrient loading per acre may be allowed for the use of a technology certified for enhanced
nutrient removal pursuant to 310 CMR 15.281 through 15.289 as illustrated by the following
example:
Recirculating Sand Filter 550 gpd/acre
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 15.293. 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.
15.220: Preparation of Plans and Specifications
The plans and specifications for every on-site system shall be prepared as follows:
(1) Every system shall be designed by a Massachusetts Registered Professional Engineer
or a Massachusetts Registered Sanitarian provided that such Sanitarian shall not design a
system designed to discharge more than 2,000 gallons per day pursuant to 310 CMR 15.203.
Any other agent of the owner may prepare plans for the repair of a system designed to
discharge not more than than 2,000 gallons per day pursuant to 310 CMR 15.203 provided
they are reviewed by a Massachusetts Registered Sanitarian and approved by the approving
authority;
(2) Every plan submitted for approval must be'dated and bear the stamp and signature of
the designer,
(3) Every plan for a new system or plan for the upgrade or expansion of an existing system
which requires a variance to a property line setback distance, must also reference a plan
which bears the stamp and signature of a Massachusetts Licensed Land Surveyor in
accordance with M.G.L. c. 112, § 81D;
3/24/95 (Effective 3/31/95) 310 CMR - 515