Mayor
Pro-tem Josh Garvin called the meeting of the Meggett Town Council to order.
Present were Councilmen Tom Hutto, Keith McCarty, and Buster Herrington. Also present were Attorney Dennis Rhoad and
Town Clerk Gail Seabrook. Attorney
Dennis Rhoad led the prayer and the Pledge of Allegiance.
DHEC Presentation on Septic
Systems
Mayor
Pro-tem Josh Garvin introduced Richard Threat, with DHEC, who was invited to
speak at tonight’s meeting on septic systems with special focus on engineered
type systems. Mr. Threat thanked the
council for having him to speak at the meeting.
His position at DHEC is the Onsite Wastewater Supervisor. Attending with him is Mr. Crosby who is the Regional
Environmental Health Director for
Procedure for application for septic
system
1) Submit application form along with a deed or plat, a detail
scale site plan, and $150 fee.
2) DHEC will then ask the applicant to place a site sign
to identify the lot, flag property corners, and stake out the four corners of
the proposed location of the house.
3) Once DHEC has been notified that the above process has
been completed they will then do an on-site visit and evaluate the property in
compliance with standards and regulations to determine what type of system can
be placed on that property. Their
recommendation will be based on soil analysis, topographic features and
setbacks. If the evaluation of the
property should fail to meet the standards required for a permit, the property
owner has two avenues that they can proceed with at that point. They can request an administrative field
review from the
Types of septic systems
There
are three types of septic systems that DHEC will issue permits for: The conventional type system, the modified
system and the mounded system. There are
two types of mounded type systems. One type
is referred to as the elevated infiltration system and the other is the above
grounded or mounded field system. The
later is not used much because it uses a lot of sand and the cost of sand
pushes the cost of the system high.
There are four parts to a septic system.
The house is the source, the tank collects all the solids and liquids,
the drain field is the disposal area for all of the waste water and important
is the soil for absorbtion. If you do
not have ideal soil conditions the septic systems will not work
efficiently. Two factors that can
prevent soil absorption are high water table and tight textures such as
clay. Both of these conditions are quite
common in the low country along the coastal areas which includes the Meggett
area.
Working mechanism of septic systems
The
working mechanism of a septic system is that the water enters the tank from the
source area. The retention time in the
tank is usually 2 to 3 days. This allows
time for the water and solids and grease to separate with solids settling at
the bottom, grease at the top and liquid in the middle. The liquid then goes into the drain field and
then is absorbed into the ground area.
The dryer the soil the faster the absorption rate; whereas
with wetness the soil will take a long time for absorption. What you want is an aerated zone between
the bottom of the drain field and the ground water level. This determines the depth of the drain
field. It is important that the water
released from the drain field is purified before it goes into the ground water. This is the main purpose for the soil testing
when approving a septic system.
Engineered Designed Systems
The
Engineered Designed Systems were adopted for use by the state about 2 years ago
because of so many non buildable lots.
When a property doesn’t meet the requirements for a standard type septic
system, an alternative solution is a engineered design system. A couple of things that are required for a
permit to be issued for engineered type systems are that a soil classifier who
is licensed through DNR would need to do a soils report and that the design must be
done by a registered professional engineer.
The design must meet the requirements stipulated in section 6156. DHEC will review and issue a permit provided
all regulations are met by the design. When
an engineered design system is placed, the liability is placed on the engineer
that did the design rather than the department.
These designed systems are limited to a flow of 1500 GPD (gallons per
day). An average 4 bedroom home
generally is sized on 480 GPD. So technically
1500 GPD is a pretty high flow rate. The
Engineered systems are designed to have a cleaner effluent coming out than a
normal septic system would. These
engineered systems go through different processes to clean up the wastewater such
as aeration, and filtration. The key
factor in the engineered type systems working properly is the operation and
maintenance. It is most important to
have an ongoing maintenance plan with these systems. Actually one of the requirements by DHEC is
for the engineer to submit with his package a detail of how he is to achieve an
ongoing maintenance plan of these systems.
The engineered systems are a little more costly than conventional type
systems. Generally they range from about
$16,000 to about $30,000 which includes the soil classifier, surveyor, and
licensed engineer and the actually installation of the system. Mr. Threat showed diagrams of the different
types of engineered systems and went through the procedure of how each
worked. The first diagram he presented
demonstrated how the aerobic treatment unit works. For the most part the waste water goes into a
holding tank where solids, grease, and liquid are separated. Then the liquid goes into a second
chamber. In the second chamber a pump
with a fan aerates the water and this process breaks down the bacteria. It then goes into the third chamber and is
pushed through a filtration system to remove any other waste particles and then
it leaves this chamber and goes into the drain field. The next type of system is a filtration type
system in which the liquid waste water leaves the holding chamber and spray
nozzles distribute the water through a box type chamber where there are
multiple panels of filters. Bacteria
live on these sheet type filters and break down the waste water. It is circulated a couple of times through the
system and then goes into the drain field.
This is probably one of the most common used systems in this area. Another type system seen a lot in this area
is a two chamber in which at the second tank the filtration material is similar to
the type of material that is used in bean bag chairs. The water is sprayed and is filtered through
these bean type filters several times and the water is cleaned as it passes
through the filtering and then goes into the drain field. Another system uses peat moss which is a more
natural type of material as a filtering system rather than a synthetic type of
filters. Almost all of these types of
systems are electronic somewhat in nature because they require pumps. Some of these systems are actually monitored
through the phone lines to the companies that provide the maintenance to the
systems. This helps them to detect
problems and provide quick repairs when needed.
Most of them also have a high water alarm should the water get too high
in the tank. After the water is
processed through the filtering system it is pushed out into a drain field that
distributes the clean water through a drip type irrigation flexible pipe that
is about 1” in diameter with holes that allows release about every 2”. Companies that provide maintenance for these
systems will usually have on site inspection two to four times a year. The filters for the engineered systems only
need to be cleaned anywhere from a year up to three years depending on the
amount of use. The system that uses the
peat type filtering system will need to have the peat replaced about every five
years whereas the systems that use some type of synthetic filtering can usually just be hosed off and replaced.
Question: What is the
history of use for these systems?
Response:
Question: What safeguards
can be taken to insure that the maintenance contract is maintained by the
homeowner.
Response: Mr. Thread
stated that when a permit is issued, a requirement by DHEC is to have a copy of
the maintenance contract. A lot of the
companies also notify DHEC if the maintenance contract is dropped by the
homeowner. Technically DHEC has no
recourse to force the homeowner to have a maintenance contract except at the
time of permitting. However, basically
just like a conventional type system, when a problem occurs and there is a
backup, you are going to get someone out to fix the problem or be faced with a
sewer back up in your home.
Question: Since these
systems obviously need electricity to operate the pumps what happens with a
power outage and is a backup generator required.
Response: The generators
are not required but are recommended.
Question: What is an
average cost for a maintenance contract?
Response: The cost
usually will range from about $300 to $425 per year.
Question: Without
electricity how long will it take the system to back up and fail?
Response: Generally
these systems are placed on property where public water is not available and
therefore well water is used. Without
electricity, the wells won’t work and therefore if no water is put into the
system no problems would occur. The only
problem that may occur is with the air aerobic type system. With this system if power failure should
occur for a long extended time the bacteria may die and may have to be reseeded.
Question: How often will
the solids need to be pumped out of these types of system?
Response: The time frame
is pretty much the same as a normal type of septic system. It is recommended that every 3 to 5 years a
system be pumped. You want to keep the
solids from getting into your drain fields whether it be a conventional type
septic system or an engineered type system.
Question: Are any of
these systems designed to handle subdivisions?
Response: These systems
are mainly designed to handle individual residents. Generally they are designed to only handle up
to 1500 GPD. Soil requirements for large
scale type systems that could handle a subdivision are a lot different than
these type systems.
Question: What is the
water quality of the effluent water?
Response: A lot of the
companies claim that the water distributed into the ground from the drain hose
is actually drinkable even through this is not recommended. Some companies actually have a chlorination
process and some actually use an ultra violent light to kill bacteria. A lot of these systems are very high
tech. Bottom line is that it is much
cleaner than a normal septic type system.
Question: According to
the presentation diagrams it appears some of the systems are actually above
ground. Are they above or below ground?
Response: The diagrams
are just for clarity of how they work and the systems are placed below
ground. The drain field is placed only
about 9” under the ground. However parts
of the system may be at ground level such as the access to the filtering system
for easy access.
Question: With the drain
field being so close to the surface has problems occurred with it being cut and
could it be detected should a cut be made?
Response: If you are not
aware of the location of the line, it is possible that if you are digging in
the area it could be cut. We have had
some utilities companies that have cut right through the drain fields before
when they were not aware of their locations.
Since the drain field in under pressure you would probably know the
location of the cut because when the pump turned on to push the water through
the drain field it would spray out in that area.
Question: Are the
companies required to be licensed that are in this type of business.
Response: Most of the
companies are reputable and have been in this type of business for a long
time. Basically they would not be able
to sell the product if they did not stand behind their product and provide good
service. Remember these systems require
being designed by a professional engineer who has researched the system and is
required to uphold the design.
Question: Are there
other states that use these systems other than
Response: Yes, pretty
much they are used nation wide. Some of
the states are
Question: If the drain
field is damaged how easy is it to be repaired and would the entire pipe for
the drain field need to be replaced.
Response: Depending on
where the pipe was cut. If it was cut in
the middle you may be better off replacing the whole pipe which is pretty easy
to do. However, if just one line was cut
they do have adapter kits for repairs.
Another good feature with this flexible polyethylene type pipe is that
the inside is impregnated with a bacteria side and a fugue side that kills any
roots that may try to grow into the line.
Question: How do
septic systems, whether conventional or engineered, compare to public sewer in
regards to public health and environmental concerns?
Response: On tests that
have been done, it was found that septic systems were comparable to pubic sewer
as far as health and safety of disposal water.
It all goes back again to maintenance.
If they are maintained they work very efficiently.
At
this point, with no further questions from the residents, Tom Hutto thanked Mr.
Threat for coming and giving the presentation to the council and the resident.
Approval of minutes
Pro-tem
Josh Garvin asked for a motion to approve the minutes from the July council
meeting. Councilman Keith McCarty made a
motion to accept the minutes as written. Councilman Buster Herrington seconded
the motion. All approved.
Proclamation:
Pro-tem
Josh Garvin read aloud the proclamation #06-2007 proclaiming
Old Business
Pro-tem
Josh Garvin announced that Mayor Coffin was attending a meeting regarding
Harmony Hall being conveyed to
Pro-tem
Josh Garvin asked if there was any other old business. Gail Seabrook said that he may want to
mention that the Charleston County Police had declined the use of the room
downstairs in the
Councilman
Tom Hutto inquired what the council needed to do to move forward with the
issues that were discussed at the special council meeting held on August
8. These issues included land
requirements for horses, height requirements for buildings and should an
Architectural Review Board be formed.
Attorney Rhoad spoke up and said that the proper procedure would be for Council
to notify the Planning Commissioners of these issues and have the Planning
Commissioners hold a public meeting and come up with recommendations that they
would in turn present to Council. Tom
Hutto said that there were several areas in our existing ordinances that needed
to be looked at to have a clearer understanding of the wording such as the
buffer area in the historical district and the horse issue as well as height
restrictions. Mayor Coffin who had
arrived at the meeting asked if he could interrupt and stated that a workshop
needed to be set up and have Andrea from Charleston County Planning to
attend. Andrea had indicated to Mayor
Coffin that she had come across some things in our document that are not in
accordance with state laws. These issues
could be addressed at the same time. A work shop needs to be set up with Andrea
and the information noted and given to the Planning Commission for their review
and recommendations.
Councilman
Tom Hutto asked Mayor Coffin if he had heard back from
New Business
No
new business
Miscellaneous Report:
Gail
Seabrook in Ellie Prentiss’s absence provided the miscellaneous report
1) August 8th David Bushmire came by to
determine the best location for the high speed internet connection. The cost will be $100 plus wiring cost.
2) The April in Meggett Festival will sponsor an art
contest for students in the Low Country.
Grades K-12th. The
application was sent to
3) The punch list for the
4) It appears the leaks have been stopped in the
5) The audit agreement letter from Killen & Assoc. is
in your folder for year ending in June, 2006. (FYI: The GASB34 is a new financial
reporting required for state and local governments. This is the first year that Meggett has been
required to use the GASB34.)
6) Metal Trades is considering using the
7)
8) Yoga classes will begin again this Thursday from
9) Next Council meeting
10) The estimate from Chris Wilson for adding A/C return
vent is in your folders.
Scheduled
Meetings:
|
DATE |
TIME |
EVENT |
|
|
|
Continuing Education for
Planning Comm., Town Council, & BZA |
|
|
5-6:30 |
Yoga Classes |
|
|
|
Town Hall Closed |
|
9/11/07 10/2/07 |
|
Christmas Events Planning
Meeting |
|
|
|
|
At
this point a motion was made to amend the agenda to state that Council would go
into executive session after this meeting to discuss a contractual matter. The motion was second and all approved.
Public Comments
1) Mayor Coffin offered to share with everyone what he
had found out about at the meeting he attended tonight regarding Harmony
Hall. He said he wasn’t sure that the
transaction would take place with the purchase of Harmony Hall by the Parks and
Recreation Committee but it was clear that they did intend to do what ever was
necessary from a legal stand point to make sure that Mr. Stanley complies with
the contract for the sale of the property.
A resident asked if there was a problem on Mr. Stanley’s part. Mayor Coffin indicated that Mr. Stanley had
not come to the closing. Attorney Rhoad explained
that from a legal stand point the general rule is that the buyer can force the
seller to perform the terms of the contract and force the property to be sold
to the buyer. Attorney Rhoad did
indicate that he had not seen the actually contract between Mr. Stanley and the
Parks and Recreation Department and was not familiar with what the terms of
this contract stated. Mayor Coffin
continued with the information stating that it was announced that there was a
30 day postponement of the closing.
Attorney Rhoad asked if the PRC actually took a public vote. Mayor Coffin said that the PRC went into
executive session to discuss the matter and then came out and directed their
attorney to take all legal action to protect the interest of the PRC. It was voted on unanimously. Mayor Coffin stressed that this is such an important
issue for the community and he will keep everyone posted with any updateds of
the situation as soon as he hears anything.
He said he had been told by the Director of the PRC that they plan to
hold Mr. Stanley to the contract.
With
no further comments, Councilman Keith McCarty made a motion to go into
executive session. Second by Tom Hutto
and all voted in favor. Regular public
meeting was adjourned.
Submitted by Town Clerk: Gail Seabrook