20070776 Ver 1_More Info Received_20080424

[~] w~ET~M
April 23, 2008
401 Oversite/Express Review Permitting Unit
NCDENR -Division of Water Quality
Parkview Building
2321 Crabtree Boulevard, Suite 250
Raleigh, North Carolina 27604
Attention: Ms. Annette Lucas
Re: Waynesville Commons, Haywood County
Dear Ms. Lucas:
We have previously submitted documentation on the `Snouts' and proposed to use them as pre-
treatment to our sand filters. Due to logistical and site constraints, we can not use the snouts as
originally proposed.
In-lieu of the snouts, we are proposing to use the Kristar F1oGard+plus Catch Basin Insert Filter. The
Flo-Gard+Plus has the hydraulic capacity, provides better TSS removal, and is easier to install and
maintain. We have attached a performance summary, Product Specifications and Installation Guide,
Specifications for Maintenance, and detail sheets for your review. We are requesting this
modification to the approved plans.
If you have any questions or comments, please contact us at 1.828.665.1288.
Sincerely,
WADE TRIM, INC. d
• -~~ ~~l~ ?jx;t~i i ,~ -~
~_ ~~~` ~
Charles J. Christ , E ~ ~ ~~ ~ '~ ~ ~ ~ ~
Associate
'w~,'t?i ~.iV~~..;h.i; c,~nC~"~+,4h'^~{tl? 13'Z~<!v';;ti
CJC
CDW2009-01 E
wteim:projectwise\Documents\Land Development\Projects\Cdw2009\Ole\Docs\Storm Water\2008-State 401UNs. Mnette Lucas 2008-04-23.doc
Enclosures
cc: Mr. David Scarnati, Cedarwood Development, Inc.
Wade Trim, Inc.
1200 Ridgefield Boulevard
Suite 145
Asheville, NC 28806
828.665.1288
828.665.9566 fax
www.wadetrim.com

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9satla tteWi, CA
93401
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Independent field tests conducted in Hawaii and New Zealand on FloGard
+PLUS® Catch Basin Insert Filters to determine TSS removal efficiency.
Results were extrapolated to a typical street deposited sediment particle
size. Removal efficiencies were plotted and reflect effective TSS removal
over the typical range of operating flow rates. Results are shown below
as a function of unit internal surface area.
FloGard +Plus®
TSS Removal
Typical Urban Runoff Distribution'
'extrapolated from available field test data
YC = 20C
E
0 20 ao so eo too ~o tao
Flux (gpm/sq ft)
• FloGard +Plus -Linear (FloGard +Plus)
Street Deposited Sediment
Typical Particle Size Distribution
from urban runoff TSS survey data
c ~,at! ao.o
~ a V 60.0 -
~ `m L ao.o
m c
LL LL m 20.0 ,...
3 0.0
to too tooo toooo
Particle Size (micron)
-~-Woodward-Clyde (1997) t Honolulu Street Sediment (2004)
Units are sized to fit most common
styles of drainage inlet grate frames
or inlet widths. Rated filtered flow
capacities for each model typically
exceed the required "first flush"
treatment flow rate, and account for
reduction in capacity as the unit
accumulates suspended pollutants.
Rated bypass capacity for each
model also typically exceeds the
inlet capacity of the catch basin.
Kristar's FloGard +PLUS® Catch Basin Insert
Filter is an efficient inlet prefilter designed to
remove suspended sediment and floatable trash
and hydrocarbons from stormwater runoff in new
or retrofit applications. It is ideally suited for
removal of primary pollutants from paved
surfaces in commercial and residential areas, or
may form part of a treatment train. The device
features a unique dual-bypass design, durable
components, flexible installation options and
easy maintenance access.
FloGard +PLUS® Test R~uRs Summary
Testing Agency %TSS Removal ~ OII ti Grease
Removal
ucu- eo' 7o-eo
U of Auckland
Tonkin d Taylor Ltd 95"
(for City of Audc- 78-86"'
land
U of Hawaii (for Cfty ~...
of Honolulu
'Sand larger than -575 tun
.,sand J~trla,tlon -ioo-tooo l,m
'«L.ocal street sweep material (d'istributton consistent with NURP)
KRISTAR ENTERPRISES INC.

Flat grated inlet
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FloGard+PLUS /Product Specifications
The FloGard+PLUSO is a multipurpose catch basin insert designed to capture sediment,
debris, trash & oils/grease from low (first flush) flows.
A (dual) high-flow bypass allows flows to bypass the device while retaining sediment and
larger floatables (debris & trash) AND allows sustained maximum design flows under extreme
weather conditions.
FloGard+PLUS® inserts are available in sizes to fit most industry-standard drainage inlets
(...flat grated, combination, curb and round inlets).
FloGard+PLUS® catch basin inserts are recommended for areas subject to silt and debris as
well as low-to-moderate levels of petroleum hydrocarbon (oils and grease). Examples of such
areas are vehicle parking lots, aircraft ramps, truck and bus storage yards, corporation yards,
subdivision streets and public streets.
Questions? Contact KriStar at [phone] 4/07
Curb inlet

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Flat grated inlet
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FloGard+PLUST"' /Installation Guide
FloGard+PLUST"" Catch Basin Insert Filters are designed for installation in flat grated catch
basins, combination (grated and curb opening) catch basins and curb opening catch basins.
They may be "Frame" mounted or "Wall" mounted depending on the type of catch basin.
Key elements of installation of the various devices and mounting methods are:
Frame Mount Insert Filter (for standard or irregular-dimensioned flat grated inlets):
• Remove the inlet grate and clean and remove any collected debris and trash from the catch
basin.
• Clean off the grate bearing ledge and lower the filter assembly onto the ledge.
• Insure that the two floatable adsorbent pouches are tethered to the D-rings in the bottom
corners of the assembly.
• Replace the inlet grate.
Questions? Contact KriStar at [phone] 4/07
Curb inlet

-- ~._.
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• ~~
GENERAL SPECIFICATIONS FOR MAINTENANCE OF
FLO-GARD+PLUS® CATCH BASIN INSERT FILTERS
SCOPE:
Federal, State and Local Clean Water Act regulations and those of inswance carriers require that
stormwater filtration systems be maintained and serviced on a recurring basis. The intent of the
regulations is to ensure that the systems, on a continuing basis, efficiently remove pollutants from
stormwater runoff thereby preventing pollution of the nation's water resowces. These specifications apply
to the F1oGard+Plus Catch Basin Insert Filter.
RECOMMENDED FREQUENCY OF SERVICE:
Drainage Protection Systems (DPS) recommends that installed Flo-Gard+Plus° Catch Basin Insert
Filters be serviced on a recurring basis. Ultimately, the frequency depends on the amount of runoff,
pollutant loading and interference from debris (leaves, vegetation, cans, paper, etc.); however, it is
recommended that each installation be serviced a minimum of three times per year, with a change of filter
medium once per year. DPS technicians are available to do an on-site evaluation, upon request.
RECOMMENDED TIMING OF SERVICE:
DPS guidelines for the timing of service are as follows:
1. For areas with a definite rainy season: Prior to, dwing and following the rainy season.
2. For areas subject to year-round rainfall: On a recurring basis (at least three times per year).
3. For areas with winter snow and summer rain: Prior to and just after the snow season and during
the summer rain season.
4. For installed devices not subject to the elements (washracks, parking garages, etc.): On a recurring
basis (no less than three times per years).
SERVICE PROCEDURES:
1. The catch basin grate shall be removed and set to one side. The catch basin shall be visually
inspected for defects and possible illegal dumping. If illegal dumping has occurred, the proper
authorities and property owner representative shall be notified as soon as practicable.
2. Using an industrial vacuum, the collected materials shall be removed from the liner. (Note: DPS
uses atruck-mounted vacuum for servicing Flo-Gard+Plus° catch basin inserts.)
3. When all of the collected materials have been removed, the filter medium pouches shall be
removed by unsnapping the tether from the D-ring and set to one side. The filter liner, gaskets,
stainless steel frame and mounting brackets, etc. shall be inspected for continued serviceability.
Minor damage or defects found shall be corrected on-the-spot and a notation made on the
Maintenance Record. More extensive deficiencies that affect the efficiency of the filter (torn liner,
etc.), if approved by the customer representative, will be corrected and an invoice submitted to the
representative along with the Maintenance Record.
4. The filter medium pouches shall be inspected for defects and continued serviceability and replaced
as necessary and the pouch tethers re-attached to the liner's D-ring. See below.
5. The grate shall be replaced.

REPLACEMENT AND DISPOSAL OF EXPOSED FILTER MEDIUM AND COLLECTED
DEBRIS
The frequency of filter medium pouch exchange will be in accordance with the existing DPS-Customer
Maintenance Contract. DPS recommends that the medium be changed at least once per year. During the
appropriate service, or if so determined by the service technician during anon-scheduled service, the filter
medium pouches will be replaced with new pouches. Once the exposed pouches and debris have been
removed, DPS has possession and must dispose of it in accordance with local, state and federal agency
requirements.
Note: As the generator, the landowner is ultimately responsible for the proper disposal of the exposed filter meduun and
debris. Because the filter media likely contain petroleum hydrocarbons, heavy metals and other ham fi+l polh~tants, the
matenals must be treated as an EPA Class 2 Haut-roi~s Waste and properly disposed of. DPS relieves the landowner of the
acnral disposal task, and provides ce~tificatron of its completion in accordance with appropriate regulations.
DPS also has the capability of servicing all manner of catch basin inserts and catch basins
without inserts, underground oiUwater separators, stormwater interceptors and other such devices.
All DPS personnel are highly qualified technicians and are confined space trained and certified.
Call us at [phone] for further information and assistance.

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U.S. PATENT # 6,00,023 ~ 6,877,029
GRATE
"ULTIMATE" BYPASS
FEATURES
GASKET
STAINLESS STEEL
SUPPORT BASKET
Fossil Rock '"'
ABSORBENT POUCHES
LINER
SUPPORT
BASKET
CATCH BASIN
(FLAT GRATE STYLE)
E;
NOTES:
1. FloGard®+Plus (frame mount) high capacity catch basin inserts
are available in most sizes and styles (see specifier chart, sheet
2 of 2). Refer to the FbGard®+Plus (wall mount) insert for
devices to fit nonstandard, or combination style catch basins.
2. Filter insert shall have both an "initial" filtering bypass
and "ultimate" high fbw bypass feature.
3. Filter support frame shall be constructed from stainless steel
Type 304.
4. Allow a minimum of 2.0 feet, of clearance between
the bottom of the grate and top of outlet pipe(s), or refer to the
FloGard® insert for "shallow" installations.
5. Filter medium shall be Fossil Rock '"', installed and
maintained in accordance with manufacturer speciflcatans .
6. Storage capacity reflects 80% of maximum solids collection prior
to impeding filtering bypass.
7. Filtered flow r~rate includes a safety factor of two.
~~~~~ ~~~~®+PLUS KriStar Enterprises, Inc.
KRISTAR
CATCH BASIN FILTER INSERT P.O. Box 6419, Santa Rosa, CA 95406
(Frame MOlJf1t) Ph: 800.579.8819, Fax: [phone], www.kristar.com
FLAT GRATED INLET DRAWING N0. nEV Eco wrE
FGP-0001 A 0001 JPR 09/01/06 SHt~T 1 of 2

FLOGARD+PLUS® FILTER
-INSTALLED INTO CATCH BASIN-

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'ULTIMATE' BYPASS FEATURE
(LOWERS At OPENINGS)
SEE DETAIL C
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' MANY OTHER STANDARD 6 CUSTOM SIZES 8 DEPTHS AVAILABLE UPON REQUEST.
SPECIFIER CHART

MODEL NO. STANDARD b SHALLOW
DEPTH
IDam w, ttbae colurrrs b tlw sam. tar
both STANDARD 6 SHALLOW versbns) STANDARD DEPTH
-20 Inches-

MODEL NO. SHALLOW DEPTH
-121nches-
STANDARD

DEPTH
INLET ID
Inside
Dimension
(inch x Inch)
GRATE OD
Outside
Dimension
(inch x inch)
TOTAL
BYPASS
CAPACITY
(~, ft,) SOLIDS

STORAGE
CAPACITY
(cu. ft.) FILTERED

FLOW

(cu. ft. /sec.) SHALLOW

DEPTH SOLIDS

STORAGE
CAPACITY
(cu. fl.) FILTERED

FLOW

(cu. ft. /sec.)
FGP-12F 12 X 12 12 X 14 2.8 0.3 0.4 FGP-12F8 .15 .25
FGP-1530F 15X30 15 X 35 6.9 2.3 1.6 FGP-1530F8 1.3 .9
FGP-16F 16 X 16 16 X 19 4.7 0.8 0.7 FGP-16F8 .45 .4
FGP-1624F 16 X 24 16 X 26 5.0 1.5 1.2 FGP-1624F8 .85 .7
FGP-18F 18 X 18 18 X 20 4.7 0.8 0.7 FGP-18F8 .45 .4
FGP-1820F 16 X 19 18 X 21 5.9 2.1 1.4 FGP-1820F8 1.2 .8
FGP-1824F 16 X 22 18 X 24 5.0 1.5 1.2 FGP-1824F8 .85 .7
FGP-1836F 18X36 18 X 40 6.9 2.3 1.6 FGP-1836F8 1.3 .9
FGP-2024F 18 X 22 20 X 24 5.9 1.2 1.0 FGP-2024F8 .7 .55
FGP-21 F 22 X 22 22 X 24 6.1 2.2 1.5 FGP-21 F8 1.25 .85
FGP-2142F 21 X 40 24 X 40 9.1 4.3 2.4 FGP-2142F8 2.45 1.35
FGP-2148F 19 X 46 22 X 48 9.8 4.7 2.6 FGP-2148F8 2.7 1.5
FGP-24F 24 X 24 24 X 27 6.1 2.2 1.5 FGP-24F8 1.25 .85
FGP-2430F 24 X 30 26X30 7.0 2.8 1.8 FGP-2430F8 1.6 1.05
FGP-2436F 24X36 24 X 40 8.0 3.4 2.0 FGP-2436F8 1.95 1.15
FGP-2448F 24 X 48 26 X 48 9.3 4.4 2.4 FGP-2448F8 2.5 1.35
FGP-28F 28 X 28 32 X 32 6.3 2.2 1.5 FGP-28F8 1.25 .85
FGP-2440F 24 X 36 28 X 40 8.3 4.2 2.3 FGP-2440F8 2.4 1.3
FGP-30F 30 X 30 30 X 34 8.1 3.6 2.0 FGP.30F8 2.05 1.15
FGP~6F 36X36 36 X 40 9.1 4.6 2.4 FGP~6F8 2.65 1.35
FGP-3648F 36 X 48 40 X 48 11.5 6.8 3.2 FGP-3848F8 3.9 1.85
FGP-48F 48 X 48 48X54 13.2 9.5 3.9 FGP~48F8 5.45 2.25
FGPSD24F 24 X 24 28 X 28 6.1 2.2 1.5 FGPSD24F8 1.25 .85
FGP-1836FG0 18 X 38 20 X 40 6.9 2.3 1.8 FGP-1836F8G0 1.3 .9
FGP-2436FG0 20X36 24X40 8.0 3.4 2.0 FGP-2436F8G0 1.95 1.15
FGP-48FG0 18 X 48 20X54 6.3 2.2 1.5 FGP~8F8G0 1.25 .85
"ULTIMATE' BYPASS FEATURE
(LOUVERS e~ oPENINGS)
oEPTH
STANDARD = 20 INCHES
SHALLOW a 12 INCHES
•CUSTOM
DETAIL B
SECTION VIEW
FLO-GARD®+FILTER
-INSTAILED-
U.S. PATENT # 6,00,023 8 6,877,029
IIILC ~~~~®+PLUS KriStar Enterprises, Inc.
KRISTAR
CATCH BASIN FILTER INSERT P.O. Box 6419, Santa Rosa, CA 95406
(Fram@ MOUnt) Ph: 800.579.8819, Fax: [phone], wrww.kristar.com
FLAT GRATED INLET DRAWING N0. aEV cca aTE
FGP-0001 A QQQ~ JPR 09/01/06 SHEET 2 OF 2
DETAIL C
"ULTIMATE"
BYPASS FEATURES

BOARD OF
BUILDING AND SAFETY
COMMISSIONERS
MARSHA L. BROWN
PRESIDENT
PEDRO BIRBA
VICE-PRESIDENT
VAN AMBATIELOS
HELENAJUBANY
ELENORE A. WILLIAMS
CITY OF LOS ANGELES
CALIFORNIA
"9~-
ANTONIO R. VILLARAIGOSA
MAYOR
January 18, 2007
Jonathan McDonald
Kristar Enterprises, Inc.
1219 Briggs Av.
Santa Rosa, CA 95401
DEPARTMENT OF
BUILDING AND SAFETY
2319 DORRIS PLACE
LOS ANGELES. CA 90031
ANDREW A. ADELMAN, P.E.
GENERAL MANAGER
RAYMOND CHAN
EXECUTIVE OFFICER
RESEARCH REPORT: RR 591
EFFECTIVE DATE: 01/O1i07
EXPIRATION DATE: 0l /0l %08
Telephone: [phone]
GENERAL APPROVAL - "F1oGard" Series Catch Basin Insert Filters manufactured by Kristar
Enterprises, Inc. See attachment for list of approved model number.
DETAILS
Flo Gard Plus is a catch basin insert designed to treat rainwater runoff. These filters include a
stainless steel frame, and geotextile fabric liner encapsulating an adsorbent which maybe
replaced. They are designed to collect particulate, debris, metals and petroleum hydrocarbons
1TOm stormwater runoff with abuilt-in flow bypass.
The approval is subject to the following conditions:
This product may be installed in a storm water treatment system outside of a building
(commercial or a residential) structure.
2. The storm water treatment system shall be sized in accordance with the manufacturer's
recommendations, Table -1 shown of Page 3, Table-2 of Page 4 and Chapter 11 and
Appendix D, of Los Angeles Plumbing Code (LAPC), 2002 Edition.
3.
4.
S.
6.
7.
LADBS G-5 (Rev. 7/06)
Storm water drainage piping plans shall be submitted to Mechanical Plan Check and
permit shall be obtained prior to installation of this product.
This product shall be maintained periodically per manufacturer's printed instructions.
The storm water systems shall be accessible for inspection and maintenance purposes.
A permit from Watershed Protection Division (Phone #: [phone]), Department of
Public Works, shall be required for each installation.
Each storm water quality device shall be permanently identified with the name "Kristar
Enterprises," and appropriate model number.
RR-5 ~9 I
AN EQUAL EMPLOYMENT OPPORTUNITY -AFFIRMATIVE ACTION EMPLOYER Page 1 of 4

DISCUSSION
File and reports were examined by the Mechanical Testing Laboratory. The materials are
equivalent to that prescribed by the Los Angeles Municipal Code (LANG) in quality, strength,
effectiveness, durability and safety.
For this General Approval to he valid on any individual construction project in the City of Los
Angeles, an engineer or inspector of the Department of Building and Safety must make a
determination that all conditions of the General Approval required to provide equivalency have
been met in the case of each construction project under consideration.
This approval is granted under Sections 94.101.3, 94.301.1, 94.301.2, 94.307.0, 94.1101.1 and
94.1 101.3 of LAPC, 2002 Edition.
Prepared by:
/ ,~~,
i
~f
Mark Wang, est En ~ er~
`Mechanical ~ ~ Laboratory
Engineering Bureau
Recommended by:
l C_....------
l%
° Thomas Liu, Director
Mechanical Testing Laboratory
F,ngineering Bureau
Approved by:
~- f'~
yv-~Y~-- ~G+~j~.
A tr abakh, Chief
Mechanical Engineering Section
Engineering Bureau
Concu nce By:
Michael Tharpe, Chief
Plumbing /Mechanical Inspection
Inspection Bureau
RR-5 ~ 9 l
Page 2 of 4

Kristar Enterprises, Inc.
Research Report RR 5591: F1oGard Plus Catch Basin Insert Capacity Tables
A. Table-1: FloGard+plus©
Model Number Filtered Flow Capacity
(cubic feet per second) Bypass Flow Capacity
(cubic feet per second)
FGP-12F 0.14 0.8
FGP-1530F 0.33 1.7
FGP-16F 0.23 1.2
FGP-18F 0.23 1.2
FGP1820F 0.24 1.2
FGP-1824F 0.24 1.2
FGP-1836F 0.33 1.2
FGP-1836FGO 0.33 1.7
FGP-1836W 0.33 1.7
FGP-1836WE 0.33 1.7
FGP-2024F 029 1.5
FGP-21 F 0.31 1.5
FGP-2142F 0.46 2.1
FGP-2148F 0.52 2.3
FGP-24F 0.31 1.5
FGP-24DF 0.31 1.5
FGP-24W 0.31 1.5
FGP-2430F 0.36 1.7
FGP-2436F 0.41 1.9
FGP-2436FGO 0.41 1.9
FGP-2436W 0.41 1.9
FGP-2436VVE 0.41 1.9
FGP-2448F 0.52 2.3
FGP-28F 0.37 1.7
RR-5591
Page 3 of 4

FGP-28W 0.37 1.7
FGP-2840F 0.46 2.1
FGP-30F 0.38 1.5
FGP-36F 0.66 3.3
FGP-36W 0.66 3.3
FGP-36WE 0.66 3.3
FGP-3648F 0.82 3.8
FGP-3648W 0.82 3.8
FGP-3648WE 0.82 3.8
FGP-48F 1.04 4.7
B. Table-2: FloGard®
Model Number Filtered Flow Capacity
(cubic feet per second) Bypass Flow Capacity
(cubic feet per second)
FF-12 D 0.11 0.3
FF-V64D 0.1.1 0.3
FF-16D 0.16 0.7
FF-1624D 023 1.1
FF-18D 0.19 0.9
FF-1824D 0.23 1.1
FF-1836SD 0.35 1.8
FF-1836DGO 0.35 1.8
FF-1848DGO 0.43 2.4
FF-21 D 0.25 1.2
FF-24D 0.30 1.5
FF-24DGO 0.30 1.5
FF-2430D 0.34 1.8
FF-30D 0.39 2.1
FF-36D 0.48 2.7
FF-FB24 0.05 0.4
RR-5591
Page 4 of 4