We've started here and as I mentioned, we're being recorded
and Therese Walters is here and all set up and
so please be careful of the cords. Uh as
far as your, your movement, I think we've
got two cameras going, um, the screen looks like it's
high enough, you won't be impeding the view,
but I guess trying to stay out of the center
of that as far as your microphone, we've got
a center of mike that's kind of fanning out.
So I think you'll be good with your sound.
Um I've got a clicker working. So everybody's,
I think you used this before on the first presentation
right forward backwards. There's a blackout. Don't hit
it; if you do hit it again. Um and
there is a little pointer here if you want to
make an emphasis point on it, so that's running.
Um everybody's power point is up and running, so
you just have to find it. You don't have
to double click it and get it running again except
The prexy one wherever you guys are sitting, you guys will have
to do that. So alright, um as far
as timing, I'm gonna start my stopwatch and I
will stand at nine minutes. You have 10 minutes
to do it. If you're almost done in 10
minutes, I'll be a little lenient, right,
but we don't want you droning on and on into
15 minutes. That's not gonna happen. All of,
all of the mentors have sheets that they're gonna
be taking notes on about different things, you guys
have all done presentations multiple times in the past.
Um for some of you, this is the last
final of your college career, am I Right?
And so this should be the very best presentation of
your college career. So I'm looking forward to seeing
that. No pressure, no pressure. But that's
what we're looking forward to. Are you guys good
to go. Alright, let me sit down and
get my stop rolling here. Mm hmm. I'm Greg,
and we're working on Burgess and Niple.
I'm Doug. Steve [inaudible]. So we were working
on a site looking at 4350 Pleasant Valley Road
in Fairfax County. You can see it's located up
near D.C. In the northern part of
Virginia. It's separated by the Loudoun County and Fairfax
County uh County line. And we focused on not
developing in that Loudoun County site to make sure that
we didn't cross over any regulations between the counties or
zoning ordinances. Um Down here, this is the
comp plan, land use map. We focused on
making sure that we stuck with the comp plan and
made sure that we were meeting the regulations and and
things they focused on the comp plan. The zoning
ordinance. The site actually had to be rezoned and
had to receive a special use permit. It was
zoned residential conservation which in Fairfax County, they look
to preserve the ecology and it's roughly 5 to 10
acre lots. Um they're a special use permit was
given because we're developing a church and it's roughly 33,000
square feet. And that falls under the special use
permit as a place of worship is also it's gonna
have a nursery and a future development of a playground.
Um We did our feasibility analysis, we used
our wetlands delineation. Uh There are no wetlands located
on site. We also use our web soil survey.
There are no protected farmland soils also located on
site but we do have 100 year floodplain on site
which we had to make sure that we can't undeveloped
to ensure the safety of the development and the preservation
of the ecology. Um The existing site conditions,
we do have existing water across the street, sewer across
the street, and there is a connection to the
public storm water down at the um northeast corner there.
We also have an environmental quality corridor that is
to remain perpetually undisturbed. However, you can put
passive BMPs as well as unpaved trails and stuff through
the E. Q. C. We also have
a resource protection area which in this location is to
preserve its in the Occoquan um reservoir watershed so as
to preserve the water quality and stormwater runoff. So
we start with our grading. Um We had to
focus on the parking lot as that was going to
be our biggest part of the development. The site
is located on a ridge. So we focused on
placing the parking lot in the areas of low slopes
to ensure that it would be less earthwork as well
as focusing on using that that ridge to maintain our
runoff for storm water and to ensure that we were
going to minimize the cost for earthworks since that is
roughly one third of our cost. Um the building
plot was set at 268 ft. We figured that
268 ft for our building plot elevation would best
meet our stormwater runoff and grading plan to minimize cost
for the parking lot. Um we also have our
step off of one ft for the 1st 10 ft
to ensure that no water is going to be running
towards the building. R eight Ea. Access is
located right here and it goes to the west entrance
of the building. It is met all A.
D. A. Requirements and regulations as an introvert
foot and it consists of six A. D.
A. Accessible parking spots as well as one van
accessible parking spot. And we're using a retention pond
on site for our storm water. And just moving
that up to, we had, we initially had
it lower than that. Once we moved it up
to 264, we actually reduced our grading cost$500,000
. So it was pretty interesting to see how such
a small thing can save your cost. Mm hmm
. Alright, so I'm here to talk to you
about the way utilities on site as Greg was talking
about, there was a water main connection through a
two inch blow off valve located right across the blue
screen blue spring road That was connected and run with
a 6" ductile iron pipe all the way to the
building. One of the fire code regulations, is
that a fire hydrant be within 50 ft of the
building. So we place that right across our egress
access or egress access way and that consisted of the
fire hydrant itself and a six inch valve right before
we got to the building. As you can see
there's a three inch valve and a 1.5 inch water
meter before the water is actually fed to the building
. Now another fire regulation was that you need a
fire line also going in a separate way. So
we have that coming off right there as you can
see from the picture. The connection was actually made
at 250 253 ft in elevation Um at that point
and made the connection with the building at 259.
Now, the other way utility is sanitary sewer.
This was a little more complicated than the simple lateral
line that was connected with water. It was an
8" PVC And as you can see, we connected
at 252. This manhole that connected in with city
water or the city sewage And we had the case
that with a 24 in corrugated metal pipe and that
was in order to to to provide structural stability as
across the um the right of way right here with
the increased pressure of the road and vehicles for vehicular
traffic. Once we got out there was a clean
out placed every 50 ft as per regulation, it
crossed the stormwater stormwater pipe right here and all clearances
and code, all clearances and covers were to code
And it ties into the building right in the very
back. Um and as I said again, these
are clean out's not manholes every 50ft that had to
we weren't allowed to put one in the access way
. So, of the 50 ft regulation I was
talking about was just for the first, the first
kind of stretch of the pipe. Next, I'm
gonna talk to you about the stormwater management system we
put in place, which comprised of two main two
main pipelines, one running both running from west to
east, one on the northern border of the site
, the other on the southern border consisted of 15"
reinforced concrete pipes, inlets, grates on the two
greats located here on the ground for the two islands
and a retention pond that Greg was talking to you
about. And as you can see the two outlets
empty into the retention pond, an elevation of 254
ft and as because of his retention pond, we
want to keep A few feet of water in there
at all times. So the outlet structure of the
drainage structure right here, which leads to the 36"
reinforced concrete pipe that leads to the sewer or to
the city's stormwater management system is located 254 ft above
elevation. So that's going to keep a little bit
of water in there for us. Other than that
, you can see it's it's not the most complex
system, but it provides the means to keep the
peak discharge of our site adequate with the pre development
number. So it was it was a success um
for erosion and sediment control. We deployed basic methods
including temporary stones and um entrance silk fence diversion dykes
sediment basin as well as a retention pond for the
flow path, as you can see right here directs
this way and we have constructed a diversion dike right
here, which is called a right of way diversion
dyke composed mainly of soil, but where it crosses
our construction entrance right here, it's gonna be made
of stone and we're gonna have an entrance right here
. That's also gonna be made of stone for easier
crossing. Um As you can see, we have
a diversion dyke down here to the south. Both
are intended to route water over here to our sediment
basement um sediment basin was chosen over sediment trap because
of the increased area over here. This is a
large construction area and the sediment basin would be able
to handle more water than a sediment trap would um
Some of the methods used for the erosion smith settlement
control phase two for inlet structures we have right here
, we're going to be our drop for our curb
inlet structures. We're gonna be using a wire mesh
and stone and then for our yard drain inlets,
we're gonna be using a fabric drop. Um Over
here you can see, we've converted to our retention
pond, which has outlet structure protection, which is
composed of riprap, which will help reduce the velocity
of the water going into the pond. Um We
have standard seating right here and that will also be
right here in between the building and the parking lot
, as well as the parking lot and the diversion
dyke. Um for the cost estimate, we estimated
it to be about$1.8 million. We uh we
also came up with some cost reductions earthwork. We
we realized we could reduce it$100,000. We could
do this simply by reducing the earthwork by one ft
by half a foot. Um we came up with
the second method, which would be removal of the
islands, which would save about$10,000. Um We
believe that this is uh and aesthetically pleasing and optimized
plan and that concludes our presentation questions, I can't
take it easy on the first layout of the parking
field. What's what's going on in the middle of
the islands. They wanted to focus a lot on
storm water quality and reduce runoff. So we decided
to put vegetated islands to provide an aesthetically pleasing area
, as well as reduce some of the impervious area
within the parking lot. Great, thank you guys 219 --> A:middle L:90% .