2.
Ground Water Supplies
a.
Transient Non-Community Water
Systems and Non-Transient Non-Community Water Systems
i. Transient Non-Community Water Systems and
Non-Transient Non-Community Water Systems shall submit a completed Request for
Preliminary Approval Form (Note: the Form can be obtained from the Department)
along with required documentation at least 30 days prior to the proposed date
of installation. Required documentation shall include Request for Preliminary
Approval Form, a location map and a site plan showing all potential sources of
contamination within 300 feet of the proposed well location. Other
documentation may be requested on a case-by-case basis if the Department makes
the determination that such information is necessary to get a better
understanding of the conditions of the proposed well location or otherwise for
the protection of the public health.
ii. The Request for Preliminary Approval
shall be reviewed by the Department to determine the adequacy of the well
location to provide safe and healthy drinking water to the public. No
production well shall be installed prior to preliminary approval being granted
in writing by the Department.
iii.
New wells shall be located at least 300 feet away from potential contamination
sources and at least 1,000 feet from Underground Storage Tanks regulated by the
Department of Environmental Protection (DEP) Chapter 691, unless a waiver is
obtained from the Department and the Maine Department of Environmental
Protection (DEP).
iv. If
circumstances exist where a proposed well location must be placed closer than
300 feet from a potential contamination source, then the Department may grant a
setback waiver on a case-by-case basis. The Department must receive information
from an appropriate qualified professional sufficient to make a determination
on all waiver requests. Any well proposed less than 150 feet from one or more
subsurface disposal fields must include a Maine Certified Geologist's
hydrogeologic assessment presented to the Department for review and approval,
which must include a description of the local surficial geology, a pre-pumping
water table contour map, a map showing the water table contours under pumping
conditions and an evaluation of the site's physical characteristics which
mitigate any potential impacts to the well from the disposal field(s), or
submit plans for an Advanced Treatment Unit (ATU) designed to pre-treat all
septic system effluent prior to discharge to the septic system disposal field,
to be reviewed and evaluated by the Department. Any pretreatment system
proposed as mitigation for reduced setbacks from septic system components must
be shown to significantly reduce nitrate, nitrite, and bacteria levels and
include a plan for ongoing maintenance. The Department may waive these
requirements on a case-by-case review or require additional information to
insure the suitability of the proposed well for use as a public water supply
source. The Department may place conditions on a waiver granted, which may
include increased water quality monitoring for specific contaminants at a
schedule and frequency to be determined by the Department.
v. Treatment for all new wells may also be
required as described in Section (3)(G)(2)(j).
vi. The Department may deny a proposed well
location after determining that a proposed well location is not safe from
threats of contamination or potential threats of contamination even with
increased monitoring for those contaminants.
vii. The methods and standards described in
the Manual for Water Well Construction Practices,
2nd Edition, (published in 1998 by the National
Ground Water Association), shall be used for the proper development and
determination of safe yield for all proposed Transient Non-Community and
Non-Transient Non-Community wells. A copy of this Manual is available at the
Department's office in Augusta, Maine. All water quality samples shall be
collected after proper well development, disinfection, and the conclusion of
continuous pumping on the well for a sufficient period of time so that a
minimum of three well bore volumes have been removed. The Department may, on a
case-by-case basis, require a report be prepared by an appropriately qualified
person or firm evaluating the well which may include: a description of the site
geology and any sources of contamination in the area; a map of the area showing
all wells installed and any potential sources of contamination in the area;
drilling logs for each well installed; pump test drawdown data if available;
recommendations for wellhead protection area delineations; and all required
water quality analysis results. The report shall be submitted to the Department
for review with the request for Final Approval.
viii. Final Approval of the proposed well
location may be granted only after all required water quality analyses have
been completed and it is further determined that the well is in compliance with
all applicable Primary Drinking Water Regulations.
ix. A Final Approval Form or equivalent must
be submitted along with all water quality analyses results, any maps or reports
required and a completed Wellhead Protection Self Evaluation Form to the
Department for review and approval. Wellhead protection area delineations must
be made using one or more methodologies approved by the Department.
x. Unless final approval of the proposed well
is granted in writing by the Department, no water may be served. The Department
may grant conditional approval on a case-by-case basis. The Department may also
require additional treatment, testing or other requirement that the Department
deems necessary for the protection of the public health.
b.
Water quality analyses to be
completed for Non-Transient Non-Community Water Systems prior to Final Approval
of all proposed wellsi. Final Approval
of the proposed well location may be granted by the Department only after all
required water quality analyses are completed and it is further determined that
the well is in compliance with all applicable Primary Drinking Water
Regulations.
ii. Untreated water
samples shall be analyzed by a certified laboratory, prior to source approval
and after proper well development and determination of safe for the following
parameters:
* Microbiological Contaminants: Total Coliform.
If total coliform results are positive, then samples must be analyzed for E.
Coli. If the Department determines that there is potential groundwater under
the influence of surface water, then samples must be analyzed for Heterotrophic
Plate Count (HPC), per approved methods authorized in 40 C.F.R. §
141.21;
* Inorganic Contaminants:Antimony, arsenic,
barium, beryllium, cadmium, chloride, chromium, color, copper, cyanide (as free
cyanide), fluoride, hardness, iron, lead, manganese, mercury, nickel, nitrates,
nitrites, selenium, silver, sodium, sulfate, thallium, turbidity, &zinc
(Per approved methods authorized in 40 C.F.R. § 141.23);
* Volatile Organic Compounds: (VOC) Screen:
1,2,4-Trichlorobenzene, Cis-1,2-Dichloroethylene, Xylenes, Total
Dichloromethane, O-Dichlorobenzene, P-Dichlorobenzene, Vinyl Chloride,
1,1-Dichloroethylene, Trans-1,2-Dichloroethylene, 1,2-Dichloroethane,
1,1,1-Trichloroethane, Carbon Tetrachloride, 1,2-Dichloropropane
Trichloroethylene, 1,1,2-Trichloroethane, Tetrachloroethylene, Chlorobenzene,
Benzene, Toluene, Ethylbenzene, Styrene, &Methyl Tert-Butyl Ether (MTBE)
(Per approved methods authorized in 40 C.F.R. § 141.24);
* Synthetic Volatile Organics (SOC)
Screen:2,4-D, 2,4,5-TP (Silvex), adipate, atrazine, BHC-Gamma (Lindane),
Carbofuran, Dalapon, Di(2-ethylhexyl) Di(2-ethylhexyl) phthalate, Dinoseb,
Endrin, Heptachlor, Heptachlor epoxide, Hexachlorobenzene,
Hexachlorocyclopentadiene, Lasso(Alachlor), Methoxychlor, Simazine, PCBs (as
decachlorobiphenyl), or PCBs (as aroclors),Pentachlorophenol, Picloram, Oxamyl
(Vydate), &Velpar (Per approved methods authorized in 40 C.F.R. §
141.24); and
* Radionuclides: gross alpha, radon, and
uranium, per approved methods authorized in 40 C.F.R. § 141.25.
iii. The Department may
modify the list of required water quality test parameters prior to approval if
the determination is made that the testing required will insure that the well
can produce safe and potable water or otherwise for the protection of the
public health.
c. Water
quality analyses to be completed for Transient Non-Community Water Systems
prior to Final Approval of all proposed new wells:
i. Final Approval of the proposed well
location may be granted only after all required water quality analyses are
completed and it is further determined that the well is in compliance with all
applicable Primary Drinking Water Regulations.
ii. Untreated water samples shall be analyzed
by a certified laboratory, prior to source approval and after proper well
development and safe-yield determination, for the following parameters:
* Microbiological Contaminants:Total Coliform.
If total coliform results are positive, then samples must be analyzed for E.
Coli. If the Department determines that there is potential groundwater under
the influence of surface water, then samples must be analyzed for Heterotrophic
Plate Count (HPC), per approved methods authorized in 40 C.F.R. §
141.21;
* Inorganic Contaminants:
nitrates,nitrites, fluoride, chloride, hardness, antimony,
iron, manganese, and arsenic, per approved methods authorized in 40 C.F.R.
§ 141.23;
* Volatile Organic Compounds: the Department
knows of a possible petroleum underground storage tank or spill within 1,000
feet of the well, the public water system must test for 1,2,4-Trichlorobenzine,
Cis-1,2-Dichloroethylene, Xylenes, Total Dichloromethane, O-Dichlorobenzene,
P-Dichlorobenzene, Vinyl Chloride, 1,1-Dichloroethylene,
Trans-1,2-Dichloroethylene, 1,2-Dichloroethane, 1,1,1-Trichloroethane, Carbon
Tetrachloride, 1,2-Dichloropropane Trichloroethylene, 1,1,2-Trichloroethane,
Tetrachloroethylene, Chlorobenzene, Benzene, Toluene, Ethylbenzene, Styrene,
& Methyl Tert-Butyl Ether (MTBE), per approved methods authorized in 40
C.F.R. § 141.24);
* Physical Parameters:
pH;and
* Radionuclides: uranium,per approved methods
authorized in 40 C.F.R. § 141.25, per approved methods authorized in 40
C.F.R. § 141.25.
iii. The Department may require additional
testing, if a contamination event has occurred in the area.
d.
Community Public
Water Systems Serving Fewer Than 250 People
i. Community Public Water Systems serving
fewer than 250 people shall submit a completed Preliminary Approval Form (Note:
the Preliminary Approval Form may be obtained from the Department) for each
proposed well along with required documentation at least 30 days prior to the
proposed date of installation. Required documentation shall include, but is not
limited to, the following: the Preliminary Approval Form, location map,
estimated quantity of water required from the well in gallons per minute or
gallons per day, and a site plan showing all potential sources of contamination
within 1,000 feet of the well. The Department may require a preliminary
hydrogeologic investigation of a well location if the Department makes the
determination that additional information is necessary to evaluate the adequacy
of the site to provide a safe and healthful supply of water to the public or
otherwise to protect the public health.
ii. The Preliminary Approval Form shall be
reviewed by the Department to determine the adequacy of the well location to
provide safe and healthy drinking water to the public. No production well shall
be installed prior to preliminary approval being granted in writing by the
Department.
iii. New wells shall be
located at least 300 feet away from potential contamination sources and at
least 1,000 feet from Underground Storage Tanks regulated by DEP Chapter 691,
unless a waiver is obtained from the Department and DEP.
iv. If circumstances exist where a proposed
well location must be placed closer than 300 feet from a potential
contamination source, then the Department may grant a setback waiver on a
case-by-case basis, based on an evaluation of geologic conditions, individual
land use, and other factors that potentially affect water quality. The
Department must receive information from an appropriate qualified professional
sufficient to make a determination on all waiver requests. Any well proposed
less than 150 feet from one or more subsurface disposal fields must include a
Maine Certified Geologist's hydrogeologic assessment that is presented to the
Department for review and approval, which includes a description of the local
surficial geology, a pre-pumping water table contour map, a map showing the
water table contours under pumping conditions and an evaluation of the physical
characteristics of the site which mitigate any potential impacts to the well
from the disposal field(s), or submit plans for an Advanced Treatment Unit
(ATU) designed to pre-treat all septic system effluent prior to discharge to
the septic system disposal field, to be reviewed and evaluated by the
Department. Any pretreatment system proposed as mitigation for reduced setbacks
from septic system components must be shown to significantly reduce nitrate,
nitrite and bacteria levels and include a plan for ongoing maintenance. The
Department may waive these requirements on a case-by-case review or require
additional information to insure the suitability of the proposed well for use
as a public water supply source. The Department may place conditions on a
waiver granted, which may include increased water quality monitoring for
specific contaminants at a schedule and frequency to be determined by the
Department.
v. Treatment for all
new wells may also be required as described in Section(3)(G)(2)(j).
vi. The Department may deny a proposed well
location after determining that a proposed well location is not safe from
threats of contamination or potential threats of contamination even with
increased monitoring for those contaminants.
vii. The methods and standards described in
the Manual for Water Well Construction Practices,
2nd Edition, (published in 1998 by the National
Ground Water Association), shall be used in proper development and
determination of safe yield for all proposed Community wells serving fewer than
250 people. A copy of the Manual is available in the Department's office in
Augusta, Maine. The process for determining safe yield shall be approved by the
Department prior to drilling the well. All water quality samples shall be
collected after proper well development, disinfection, and at the conclusion of
continuous pumping on the well for a sufficient period time so that a minimum
of three well bore volumes have been removed. The Department may, on a
case-by-case basis, require a report to be prepared by a Certified Geologist or
Professional Engineer evaluating the well, based on an evaluation of geologic
conditions, individual land use, and other factors that potentially affect
water quality. This report may be required to include: a description of the
site geology and any sources of contamination in the area; a map of the area
showing all wells installed and any potential sources of contamination in the
protection areas; drilling logs for each well installed; pump test drawdown
data if available; recommendations for wellhead protection area delineations;
and all required water quality analysis results. The report shall be submitted
to the Department for review with the request for Final Approval.
viii.
A.
For all production wells for community water systems serving fewer than 250
people the owner, operator or other duly responsible representative of the
public water supply shall by some legal document acquire sufficient land use
controls of, at least, all land within the minimum wellhead protection areas
specified in the pump test report prior to Final Approval. Sufficient land use
control shall be deemed as either:
1)
Ownership of the property;
2) A
contractual agreement or easement with the owners of the property that ensures
that the well shall not be negatively impacted by activities in the
contributing area; or
3) A plan
presented to the Department for review and approval showing how the
contributing area shall be sufficiently protected. The plan shall be submitted
to the Department in writing and be prepared by an appropriately qualified
individual.
B. In
addition, a description of public education procedures and materials the system
plans to implement or distribute to inform its consumers and owners of property
within the identified protection areas of water quality and wellhead protection
issues shall be provided to the Department. The Department may provide
technical assistance to water systems drafting these educational strategies.
ix. Final Approval of
the proposed well location may be granted only after all required water quality
analyses have been completed and it is further determined that the well is in
compliance with all applicable Primary Drinking Water Regulations.
x. A Final Approval Form or equivalent must
be submitted along with all water quality analysis results, evidence of land
use controls (viii), all required maps and reports and a completed Wellhead
Protection Self Evaluation Form to the Department for review and
approval.
xi. Unless final approval
of the proposed well is granted in writing by the Department, no water may be
served. The Department may grant conditional approval on a case-by-case basis,
if no potential contamination is identified. The Department may also require
additional treatment, testing or other requirements that the Department deems
necessary for the protection of the public health, based on an evaluation of
geologic conditions, individual land use and other factors that potentially
affect water quality.
e.
Water quality analyses to be completed for Community Water Systems
Serving Fewer Than 250 People
i. Final
Approval of the proposed well location may be granted by the Department only
after all required water quality analyses are completed and it is further
determined that the well is in compliance with all applicable Primary Drinking
Water Regulations.
ii. Untreated
water samples shall be collected and analyzed by a certified laboratory, prior
to source approval, and after proper well development and determination of safe
yield for the following parameters:
* Microbiological Contaminants Total Coliform.
If total coliform results are positive, then samples must be analyzed for E.
Coli. If the Department determines that there is potential groundwater under
the influence of surface water, then samples must be analyzed for Microscopic
Particulate Analysis (MPA), per approved methods authorized in 40 C.F.R.§
141.21);
* Inorganic Contaminants:Antimony, arsenic,
barium, beryllium, cadmium, chloride, chromium, color, copper, cyanide (as free
cyanide), fluoride, hardness, iron, lead, manganese, mercury, nickel, nitrates,
nitrites, selenium, silver, sodium, sulfate, thallium, turbidity & zinc
(Per approved methods authorized in 40 C.F.R. § 141.23);
* Volatile Organic Compounds (VOC)
Screen:1,2,4-Trichlorobenzene, Cis-1,2-Dichloroethylene, Xylenes, Total
Dichloromethane, O-Dichlorobenzene, P-Dichlorobenzene, Vinyl Chloride,
1,1-Dichloroethylene, Trans-1,2-Dichloroethylene, 1,2-Dichloroethane,
1,1,1-Trichloroethane, Carbon Tetrachloride, 1,2-Dichloropropane
Trichloroethylene, 1,1,2-Trichloroethane, Tetrachloroethylene, Chlorobenzene,
Benzene, Toluene, Ethylbenzene, Styrene, &Methyl Tert-Butyl Ether (MTBE),
per approved methods authorized in 40 C.F.R. § 141.24;
* Synthetic-Volatile Organics (SOC)
Screen:2,4-D, 2,4,5-TP (Silvex), adipate, atrazine, BHC-Gamma (Lindane),
Carbofuran, Dalapon, Di(2-ethylhexyl) Di(2-ethylhexyl) phthalate, Dinoseb,
Endrin, Heptachlor, Heptachlor epoxide, Hexachlorobenzene,
Hexachlorocyclopentadiene, Lasso(Alachlor), Methoxychlor, Simazine, PCBs (as
decachlorobiphenyl), or PCBs (as aroclors), Pentachlorophenol, Picloram, Oxamyl
(Vydate), &Velpar and
* Radionuclides: gross alpha, radon and uranium,
per approved methods authorized in 40 C.F.R. § 141.25.
f.
Community Public Water Systems
Serving 250 People or More
i.
Community Public Water Systems serving 250 people or more shall submit a
completed Preliminary Approval Form (Note: the Preliminary Approval Form may be
obtained from the Department) along with required documentation at least 30
days prior to the proposed date of installation. Required documentation shall
include but is not limited to the following: the Preliminary Approval Form,
location map, estimated quantity of water required from the well in gallons per
minute, and a site plan showing all potential sources of contamination within
2,500 feet of the proposed well location. The Department may require a
preliminary hydrogeologic investigation of a site if it determines that
additional information is required to evaluate the adequacy of the well to
provide a safe and healthful supply of water to the public or otherwise to
protect the public health.
ii. The
Preliminary Approval Form must be reviewed by the Department to determine the
adequacy of the well location to provide safe and healthy drinking water to the
public. No production well shall be installed prior to Preliminary Approval
being granted by the Department.
iii. New wells must be located at least 300
feet away from potential contamination sources and at least 1,000 feet from
Underground Storage Tanks regulated by DEP Chapter 691, unless a waiver is
obtained from the Department and DEP, after both departments evaluate geologic
conditions, individual land and use and other factors potentially affecting
water quality. If the Department determines that a setback distance greater
than 300 feet is required to protect public health, a greater setback distance
may be required.
iv. If
circumstances exist where a proposed well location must be placed closer than
the setback distance of 300 feet from a potential contamination source, then
the Department may grant a setback waiver on a case-by-case basis, based on an
evaluation of geologic conditions, individual land use and other factors
potentially affecting water quality. The Department must receive information
from an appropriate qualified professional sufficient to make a determination
on all waiver requests. Any well proposed less than 150 feet from one or more
subsurface disposal fields must include a Maine Certified Geologist's
hydrogeologic assessment that is presented to the Department for review and
approval, which includes a description of the local surficial geology (and
bedrock geology, if applicable), a pre-pumping water table contour map, a map
showing the water table contours under pumping conditions and an evaluation of
the physical characteristics of the site which mitigate any potential impacts
to the well from the disposal field(s), or submit plans for an Advanced
Treatment Unit (ATU) designed to pre-treat all septic system effluent prior to
discharge to the septic system disposal field, to be reviewed and evaluated by
the Department.
Any pretreatment system proposed as mitigation for reduced
setbacks from septic system components must be shown to significantly reduce
nitrate, nitrite, and bacteria levels and include a plan for ongoing
maintenance. The Department may waive these requirements on a case-by-case
review or require additional information to insure the suitability of the
proposed well for use as a public water supply source. This waiver is only
granted, after an evaluation of geologic conditions, individual land use and
other factors potentially affecting water quality. The Department may place
conditions on a setback waiver which may include increased water quality
monitoring for specific contaminants at a schedule and frequency to be
determined by the Department.
v. Treatment for all new wells may also be
required as described in Section(3)(G)(2(j).
vi. The Department may deny a proposed well
location after determining that a proposed well location is not safe from
threats of contamination or potential threats of contamination even with
increased monitoring for those contaminants.
vii. For all proposed wells, a prolonged pump
test shall be required prior to Final Approval. The requirements of the pump
test are described in subsequent parts of this section.
viii. For all production wells for community
water systems serving more than 250 people a plan showing all test well
locations and a description of the pump test methodology shall be submitted to
the Drinking Water Program for approval at least two weeks prior to the running
of the prolonged pump test. Drawdown readings must be taken in the production
well.
ix. For all surficial wells
the pump test shall be run for at least 48 hours and continue until
stabilization has been reached or for 5 days, whichever is less. Stabilization
is considered to be reached when the drawdown reading at an observation well
near the production well or the production well has not varied by more than 1/2
inch during the preceding 24 hour period. An alternative definition of
stabilization may be proposed by the applicant and must be reviewed and
approved by the Department prior to implementation. The proposal must be
prepared by an appropriately qualified person or firm.
x. For all surficial wells, a report
describing and evaluating the pump test shall be prepared by an appropriately
qualified person or firm and shall include: a description of the site geology
and all potential sources of contamination in the area; a map showing the
locations of all monitoring and production wells used for the pump test, the
pre-pumping ground water contours, potential sources of contamination in the
area; a map showing ground water contours under pumping conditions; and
wellhead protection area delineations. Wellhead protection area delineations
must be made using one or more methodologies approved by the
Department.
xi. For all surficial
wells, the safe yield, area of influence, and minimum protective zone of the
well must be presented in the pump test report.
xii. For all bedrock wells, a prolonged pump
test of not less than 48 hours shall be performed terminating when the safe
yield of the well can be reasonably estimated by an appropriately qualified
person of firm.
xiii. For all
bedrock wells, a report describing and evaluating the pump test shall be
prepared by a Certified Geologist or Professional Engineer and shall include: a
description of the site geology and all potential sources of contamination in
the area; a map showing the locations of all monitoring and production wells,
and recommendations for wellhead protection.
xiv.
A. For
all production wells, for community water systems serving more than 250 people
the owner, operator or other duly responsible representative of the public
water supply shall by some legal document acquire sufficient land use controls
of, at least, all land within the minimum wellhead protection areas specified
in the pump test report prior to Final Approval. Sufficient land use control
shall be deemed as either:
1) Ownership of
the property;
2) A contractual
agreement or easement with the owners of the property that ensures that the
well shall not be negatively impacted by activities in the contributing area;
or
3) A plan presented to the
Department for review and approval showing how the contributing area shall be
sufficiently protected. The plan shall be submitted to the Department in
writing and be prepared by an appropriately qualified individual.
B. In addition, a description of
public education procedures and materials the system plans to implement or
distribute to inform its consumers and owners of property within the identified
protection areas of water quality and wellhead protection issues shall be
provided to the Department. The Department may provide technical assistance to
water systems drafting these educational strategies.
xv. Water quality samples are to be collected
at the conclusion of the prolonged pump test. Final Approval of the proposed
well may be granted only after all required water quality analyses have been
completed and it is further determined that the well is in compliance with all
applicable Primary Drinking Water Regulations.
xvi. A Final Approval Form or equivalent must
be submitted along with all water quality analyses results, evidence of land
use controls (xiv), all required maps and reports and a completed Wellhead
Protection Self Evaluation Form to the Department for review and
approval.
xvii. Unless final
approval of the proposed well is granted in writing by the Department, no water
may be served. The Department may grant conditional approval on a case-by-case
basis, based on an evaluation of geologic conditions, individual land use and
other factors potentially affecting water quality. The Department may also
require additional treatment, testing or other requirements that the Department
deems necessary for the protection of the public health.
g. Water quality parameters to be completed
for all Community Water Systems Serving More Than 250 People.
i. Final Approval of the proposed well
location may be granted only after all required water quality analyses have
been completed and it is further determined that the well is in compliance with
all applicable Primary Drinking Water Regulations.
ii. Untreated water samples shall be analyzed
by a certified laboratory, prior to source approval and after proper well
development and safe-yield determination for the following
parameters:
* Microbiological Contaminants: Total Coliform.
If total coliform results are positive, then samples must be analyzed for E.
Coli. If the Department determines that there is potential groundwater under
the influence of surface water, then samples must be analyzed for Microscopic
Particulate Analysis(MPA), per approved methods authorized in 40 C.F.R. §
141.21);
* Inorganic Contaminants: nitrate, nitrite,
chloride, hardness, fluoride, copper, iron, manganese, zinc, arsenic, barium,
cadmium, chromium, lead, mercury, silver, selenium, sodium, color, nickel,
antimony, beryllium, sulfate, cyanide, thallium and turbidity (Per approved
methods authorized in 40 C.F.R. § 141.23);
* Volatile Organic
Compounds;1,2,4-Trichlorobenzene, Cis-1,2-Dichloroethylene, Xylenes,
TotalDichloromethane, O-Dichlorobenzene, P-Dichlorobenzene, Vinyl Chloride,
1,1-Dichloroethylene, Trans-1,2-Dichloroethylene, 1,2-Dichloroethane,
1,1,1-Trichloroethane, Carbon Tetrachloride, 1,2-Dichloropropane
Trichloroethylene, 1,1,2-Trichloroethane, Tetrachloroethylene, Chlorobenzene,
Benzene, Toluene, Ethylbenzene, Styrene, &Methyl Tert-Butyl Ether
(MTBE)(Per approved methods authorized in 40 C.F.R. § 141.24);
·
Synthetic Volatile Organics Screen:
2,4-D, 2,4,5-TP (Silvex), adipate, atrazine, BHC-Gamma (Lindane), Carbofuran,
Dalapon, Di(2-ethylhexyl) Di(2-ethylhexyl) phthalate, Dinoseb, Endrin,
Heptachlor, Heptachlor epoxide, Hexachlorobenzene, Hexachlorocyclopentadiene,
Lasso(Alachlor), Methoxychlor, Simazine, PCBs (as decachlorobiphenyl), or PCBs
(as aroclors), Pentachlorophenol, Picloram, Oxamyl (Vydate), &Velpar (Per
approved methods authorized in 40 C.F.R. § 141.24);
and
* Radionuclides: gross alpha, uranium and radon,
per approved methods authorized in 40 C.F.R. § 141.25).
h.
New Dug Wells and Springs for all
Public Water Systems
i. All proposed
dug wells and springs shall be considered surface water supplies and meet the
requirements of the surface water source approval section of these rules
(Section
3(G)(1)
).
i.
Well
Terminationi. All public water system
wells shall terminate no less than 18 inches above the ground surface or be
contained in a sealed, water tight pit, and have a sanitary seal well cap with
a protected, screened vent at the termination of the well
casing.
j.
Treatment Required
i. All
community water systems that use ground water sources and serve municipalities
and/or districts must have chlorination facilities.
ii. All new community ground water supplies
serving municipalities and/or districts may be required by the Department to
continuously chlorinate for a period of 2 months following initial utilization.
The Department may require further raw water testing following the 2-month
period of chlorination.
iii. Prior
to source approval, a treatment technique, approved by the Department, shall be
installed for any contaminant found to be in excess of the maximum contaminant
level. This section shall not apply to sodium. See Section (7)(E)(2) regarding
sodium.
iv. The Department may, at
its option, require the installation of treatment equipment if a contaminant is
present in sufficient quantity to constitute a public health concern in the
future, even if the contaminant level does not exceed the current maximum
contaminant level. The Department, in such cases, shall provide opportunity for
appeals, hearings and reviews.
v.
All public drinking water systems determined to be ground water sources under
the direct influence of surface waters shall comply with the requirements
listed in Section (7)(H) regarding filtration and disinfection.
k. Review period for plans
submitted either for preliminary or final well approval.
i. The Department will review and make a
decision on an application within 30 days. The review and approval period shall
begin after the Department has received all information requested and the
information provided is sufficient for the Department to make an informed
decision.