HomeMy Public PortalAbout460954etro oiiT :gin
St. Louis Sewer
istrict
2350 Market Street
St, Louis, MO 63103-2555
(314) 768-6200
October 10, 2011
Mr. Michael Kimberlain
KriStar Enterprises, Inc.
360 Sutton Place
Santa Rosa, CA 95407
Fax (206) 338-5966
RE: Kristar F1oGard® Perk Filter Media Filtration Device
General Use Level (GUL) Approval within District
Dear Mr. Kimberlain,
The Metropolitan St. Louis Sewer District (MSD) has reviewed your application regarding the Perk Filter for
use as a Best Management Practice for stormwater management. MSD is pleased to provide General Use Level
(GUL) approval for use of the Perk Filter as a stand-alone water quality BMP, subject to the following
provisions.
• The Perk Filter is approved for use on new development and redevelopment sites of any size. This
approval is based on compliance with requirements listed in MSD's Proprietary Water Quality Products
and the MSD's Stoiiuwater Management Program (Rev. Jan. 2009). Proprietary devices should be
treated as a supplementary (rather than a primary) means of meeting small MS 4 requirements.
• Proposed uses and designs of the device must be in general conformance with the information and
methodologies provided in Kristar's application dated July 16, 2010, the addendum dated April 18,
2011, and the details provided October 7, 2011.
• The use of buried filters shall be avoided on residential type projects.
• The Perk Filter must be sized to capture all floatable trash and free oil, and remove 80% of the total
suspended solids for the site Water Quality Volume (WQ,,). Procedures for calculating WQv are
provided in Volume I of the Maryland Stormwater Design Manual (2000). All units shall be installed
with adequate storage to treat 75% of the WQ,.
• The Perk Filter cartridges shall be designed in accordance with the following parameters:
Table 1: Perk Filter Cartridge Flow and Sediment Loads
Stack Ht.
(in)
Flow
(gpm)
Mass Cap
(lb)
Flow
(gpm)
Mass Cap
(lb)
12
6.8
37.7
12.0
21.4
18
10.2
56.6
18.0
32.1
24
13.6
75.4
24.0
42.7
30
17.0
94.3
30.0
53.4
• The device must be configured so that the filter vault is closed off from the outfall. All units including
pretreatment should be configured in an off-line layout.
• All units shall be installed with an "auxiliary flow control manifold" as indicated in the details provided
October 7, 2011. The "auxiliary flow control manifold" shall be installed in such a manner as to
prevent conflict with maintenance of the unit or removal or installation of the filter cartridges.
" A d e q u a t e p r e t r e a t m e n t s h a l l b e p r o v i d e d i n a l l s i t e d e s i g n s i n t h i s c a s e t h i s w i l l l i k e l y i n c l u d e K r i s t a r
F l o G a r d � D u a l - V o r t e x H D S u n i t . N o r e d u c t i o n i n t h e n u m b e r o f f i l t e r c a r t r i d g e s s h a l l b e m a d e f o r t h e
i n s t a l l a t i o n o f p r e t r e a t m e n t . T h e D u a l - V o r t e x H D S s h a l l b e s i z e d t o r e m o v e 5 0 % o f t h e T S S ( O K 1 1 0
P S D ) a t t h e w a t e r q u a l i t y f l o w r a t e ( W Q f ) .
" A l l p r o p r i e t a r y l i d s a n d c o v e r s s h o u l d b e c a p t i v e c o m p o n e n t s . A t l e a s t o n e " o v e r s i z e d " a c c e s s s h a l l b e
p r o v i d e d o n t h e f i l t e r v a u l t a n d s t o r a g e c h a m b e r ( e a c h ) . T h e N e e n a h M H 1 7 4 1 - F 1 , c o v e r , o r
e q u i v a l e n t , M S D a p p r o v e d c o v e r i s r e q u i r e d .
" P r o j e c t s p e c i f i c d e s i g n c a l c u l a t i o n s a n d m a i n t e n a n c e p l a n s f u r n i s h e d b y K r i S t a r m u s t b e i n c l u d e d
w i t h i n t h e p r o j e c t ' s " S t o r m w a t e r M a n a g e m e n t F a c i l i t i e s R e p o r t " p r e p a r e d b y t h e c o n s u l t i n g e n g i n e e r .
T h e d e v i c e s m a i n t e n a n c e p l a n s h a l l b e c o n s i s t e n t w i t h t h e p l a n s p r e s e n t e d i n K r i s t a r ' s a p p l i c a t i o n d a t e d
J u l y 1 6 , 2 0 1 0 , a n d a d d e n d u m d a t e d A p r i l 1 8 , 2 0 1 1 .
" T h e i n i t i a l i n s t a l l a t i o n o f t h e P e r k F i l t e r i n t h e M S D s h a l l i n c l u d e t h e f o l l o w i n g :
1 ) A m a n u f a c t u r e r ' s o r v e n d o r ' s r e p r e s e n t a t i v e m u s t b e o n s i t e d u r i n g t h e p r o p r i e t a r y B M P
i n s t a l l a t i o n t o e n s u r e t h e p r o d u c t ' s i n s t a l l a t i o n r e q u i r e m e n t s a r e m e t .
2 ) S h o p d r a w i n g s i n d i c a t i n g e l e v a t i o n s o f f l o w l i n e s , w e i r s , p i p e i n v e r t s , e t c . w i l l b e r e q u i r e d p r i o r
t o i n s t a l l a t i o n .
3 ) T h e m a n u f a c t u r e r o r v e n d o r m u s t a r r a n g e f o r a n a s - b u i l t s u r v e y o f t h e p r o p r i e t a r y B M P t o b e
p e r f o r m e d b y a M i s s o u r i - r e g i s t e r e d P r o f e s s i o n a l L a n d S u r v e y o r o n c e t h e d e v i c e h a s b e e n
i n s t a l l e d , a n d p r i o r t o a n y t e s t i n g o r m o n i t o r i n g .
4 ) U p o n c o n s t r u c t i o n a p p r o v a l o f t h e i n i t i a l i n s t a l l a t i o n o f t h i s d e v i c e t h e m a n u f a c t u r e r s h a l l
p r e p a r e a n d s u b m i t a Q A P P ( Q u a l i t y A s s u r a n c e P e r f o r m a n c e P l a n ) t o t h e B M P c o m m i t t e e f o r
r e v i e w . A t a m i n i m u m t h e Q A P P s h a l l a d d r e s s :
4 a ) T h e m a n u f a c t u r e r o r v e n d o r m u s t p e r f o r m q u a r t e r l y i n s p e c t i o n s o f t h e p r o p r i e t a r y B M P
d u r i n g i t s ' f i r s t y e a r o f o p e r a t i o n , w h i c h w i l l i n c l u d e v i s u a l i n s p e c t i o n s a n d q u a n t i t a t i v e
a n a l y s i s o f t h e s e r v i c e ' s s e d i m e n t r e m o v a l e f f i c i e n c y , e s p e c i a l l y a s c o m p a r e d t o i t s d e s i g n
e f f i c i e n c y . M S D r e q u e s t s t o b e i n v i t e d t o t h e s e i n s p e c t i o n s t o f u r t h e r e n h a n c e f a m i l i a r i t y
a n d u n d e r s t a n d i n g o f t h e d e v i c e .
4 b ) F o r m a l r e p o r t s s h a l l b e s u b m i t t e d t o M S D , i n c l u d i n g a s - b u i l t s a n d a t e a c h q u a r t e r l y
i n s p e c t i o n . T h e r e p o r t s s h a l l i n c l u d e s u m m a r i e s , q u a n t i t a t i v e a n a l y s i s m e n t i o n e d i n i t e m 4 ,
p h o t o g r a p h s o f t h e s t r u c t u r e , i n l e t , i n t e r n a l c o n d i t i o n s o f t h e s t r u c t u r e , t h e f i l t e r s , a n d o u t f a l l
c o n d i t i o n s , e t c . T h e r e p o r t s s h a l l a l s o e v a l u a t e t h e p e r f o r m a n c e o f t h e o w n e r ' s a d h e r e n c e t o
t h e a p p r o v e d m a i n t e n a n c e p r o g r a m , a n d o f f e r s u g g e s t i o n s f o r a n y a r e a s o f i m p r o v e m e n t .
5 ) U p o n a p p r o v a l o f t h e Q A P P , t h e m a n u f a c t u r e r s h a l l c a r r y o u t t h e p l a n .
M S D r e s e r v e s t h e a b i l i t y t o w i t h d r a w o r m o d i f y t h i s a p p r o v a l b a s e d o n s u b s e q u e n t i n f o r m a t i o n , i n c l u d i n g
i n f o r m a t i o n i n d i c a t i n g t h a t t h i s B M P d o e s n o t s a t i s f y M S D r u l e s , r e q u i r e m e n t s , o r c o n s t r u c t i o n s p e c i f i c a t i o n s .
S i n c e r e l y ,
J a s o n T . P e t e r e i n , P . E .
C i v i l E n g i n e e r ( B M P C o m m i t t e e C h a i r m a n )
E n g i n e e r i n g / P l a n n i n g
M e t r o p o l i t a n S t . L o u i s S e w e r D i s t r i c t
A t t a c h e m e n t s : C o n c r e t e V a u l t D e t a i l s ( 3 s h e e t s )
PF-V-4-SL 0001
BOLTED & GASKETED ACCESS HATCH.
SIZE, QUANTITY & PLACEMENT AS REQUIRED.
SEE NOTE 2.
024.00" —
BOLTED & GASKETED ACCESS COVER.
SEE NOTE 2.
018" MAXIMUM."
SEE NOTE 3.
Notes:
1.
2.
FILTERED DRAIN DOWN
DEVICE. SEE NOTE 4,
INLET GALLERY. -
St. Louis Metropolitan
Sewer District
General Use Level *
VENT HOSES MOUNTED WITH CLIPS
1,00" FROM CEILING OF VAULT.
- VENTED OUTLET HOOD.
018" MAXIMUM.
SEE NOTE 3.
AUXILIARY FLOW
CONTROL MANIFOLD.
BASE SECTION.
PERK FILTER'" CARTRIDGES/STACKS
WITH AUXILIARY FLOW CONTROL MANIFOLD.
'------CONCRETE FALSE FLOOR.
OUTLET CHAMBER.
CONCRETE DIVIDER WALL.
-- 2X 04.00" INLET FEED—THRU CAST INTO DIVIDER WALL.
INLET/FLOATABLES WEIR.
Precast concrete structure shall be manufactured in accordance with ASTM Designation C857 and C858.
Filter system shall be supplied with traffic rated (H20) bolted & gasketed access covers. At least one "oversized"
access shall be provided for the media bay and the pre-treatment bay. (Minimum 2 each total per vault.) Field Poured
concrete collar as required, by others.
3. Inlet & outlet pipe(s) (0 18" maximum) may enter device on all three sides of the inlet & outlet chambers respectively.
Connections to be made with compression gasket fittings. For pipe sizes greater than 0 18", contact
Kristar Enterprises for engineering assistance.
4. Inlet chamber shall be supplied with drain down device, designed to remove standing water between storm events.
5. Perk -Filter systems may be supplied with individual or multiple 18" or 12" high Perk -Filter cartridge. Filter cartridge
may be stacked to accommodate higher flow rates.
6. For depths less than specified minimums contact Kristar Enterprises for engineering assistance.
* Treatment Flow Rates & Mass Capacities shown conform to St. Louis Metropolitan Sewer District
General Use Level.
TITLE
® Perk Filter TM
4' WIDE CONCRETE VAULT
(St. Louis Metropolitan Sewer District Configuration)
THREE TO SEVEN CARTRIDGES / STACKS
KR,S KriStar Enterprises, Inc.
360 Sutton Place, Santa Rosa, CA 95407
Ph 800.579.8819. Fax: 707.524.8186, www.kristar.com
DRAWING NO
P F-V-4-S L-0001
REV
NR
Eco
0096 NEW 9/20/11
GATE
JPR 9/20/11
PF-V-6-Si0001
BOLTED & GASKETED ACCESS HATCH.- -
SIZE, QUANTITY & PLACEMENT AS REQUIRED.
SEE NOTE 2.
TOP SLAB. -
BASE.
024" MAXIMUM.
SEE NOTE 3.
Notes:
1.
2.
FILTERED DRAIN DOWN
DEVICE. SEE NOTE 4.
INLET GALLERY. /
St. Louis Metropolitan
Sewer District
General Use Level *
VENTED OUTLET HOOD.
VENT HOSES MOUNTED WITH CLIPS
1.00" FROM CEILING OF VAULT.
— 024" MAXIMUM.
SEE NOTE 3,
AUXILIARY FLOW
CONTROL MANIFOLD.
- - BASE SECTION.
-- PERK FILTER- CARTRIDGES/STACKS
WITH AUXILIARY FLOW CONTROL.
CONCRETE FALSE FLOOR.
OUTLET CHAMBER.
-- CONCRETE DIVIDER WALL.
4X 04.00" INLET FEED—THRU CAST INTO DIVIDER WALL.
2X INLET/FLOATABLES WEIR.
Precast concrete structure shall be manufactured in accordance with ASTM Designation C857 and C858.
Filter system shall be supplied with traffic rated (H20) bolted & gasketed access covers. At least one "oversized"
access shall be provided for the media bay and the pre-treatment bay. (Minimum 2 each total per vault.) Field Poured
concrete collar as required, by others.
3. Inlet & outlet pipe(s) (0 24" maximum) may enter device on all three sides of the inlet & outlet chambers respectively.
Connections to be made with compression gasket fittings. For pipe sizes greater than 0 24", contact
Kristar Enterprises for engineering assistance.
4. Inlet chamber shall be supplied with drain down device, designed to remove standing water between storm events.
5. Perk -Filter systems may be supplied with individual or multiple 18" or 12" high Perk -Filter cartridge. Filter cartridge
may be stacked to accommodate higher flow rates.
6. For depths less than specified minimums contact Kristar Enterprises for engineering assistance.
* Treatment Flow Rates & Mass Capacities shown conform to St. Louis Metropolitan Sewer District
General Use Level.
TITLE
; ® Perk Filter TM
6' WIDE CONCRETE VAULT
(St. Louis Metropolitan Sewer District Configuration)
FOUR TO ELEVEN CARTRIDGES / STACKS
KriStar Enterprises, Inc.
360 Sutton Place, Santa Rosa, CA 95407
Ph. 800.579.8819, Fax: 707.524.8186, www.kristar.com
DRAWING NO.
PF-V-6-SL-0001
REV
NR
EC C
0096 NEW 9/20/11
DATE
JPR 9/20/11
PF-V-8 SL-0001
BOLTED & GASKETED ACCESS HATCH. --
SCE, QUANTITY & PLACEMENT AS REQUIRED.
SEE NOTE 2.
TOP SLAB.
BASE.
024" MAXIMUM.
SEE NOTE 3.
FILTERED DRAIN DOWN --
DEVICE. SEE NOTE 4.
Notes:
1.
2.
INLET GALLERY.
St. Louis Metropolitan
Sewer District
General Use Level *
VENT HOSES MOUNTED WITH CLIPS
%' 1.00" FROM CEILING OF VAULT.
- VENTED OUTLET HOOD.
- - TOP SLAB.
024" MAXIMUM.
SEE NOTE 3.
AUXILIARY FLOW
CONTROL MANIFOLD.
BASE SECTION.
PERK FILTER"' CARTRIDGES/STACKS
WITH AUXILIARY FLOW CONTROL.
- CONCRETE FALSE FLOOR.
OUTLET CHAMBER.
CONCRETE DIVIDER WALL.
6X 04.00" INLET FEED-THRU CAST INTO DIVIDER WALL.
3X INLET/FLOATABLES WEIR.
Precast concrete structure shall be manufactured in accordance with ASTM Designation C857 and C858.
Filter system shall be supplied with traffic rated (H20) bolted & gasketed access covers. At least one "oversized"
access shall be provided for the media bay and the pre-treatment bay. (Minimum 2 each total per vault.) Field Poured
concrete collar as required, by others.
3. Inlet & outlet pipe(s) (0 24" maximum) may enter device on all three sides of the inlet & outlet chambers respectively.
Connections to be made with compression gasket fittings. For pipe sizes greater than 0 24", contact
Kristar Enterprises for engineering assistance.
4. Inlet chamber shall be supplied with drain down device, designed to remove standing water between storm events.
5. Perk -Filter systems may be supplied with individual or multiple 18" or 12" high Perk -Filter cartridge. Filter cartridge may
be stacked to accommodate higher flow rates.
6. For depths less than specified minimums contact Kristar Enterprises for engineering assistance.
* Treatment Flow Rates & Mass Capacities shown conform to St. Louis Metropolitan Sewer District
General Use Level.
TITLE ® Perk Filter TM
8' WIDE CONCRETE VAULT
(St. Louis Metropolitan Sewer District Configuration)
SIX TO THIRTY ONE CARTRIDGES / STACKS
KriStar Enterprises, Inc.
360 Sutton Place, Santa Rosa, CA 95407
Ph. 800.579.8819, Fax: 707.524.8186, www.kristar.com
DRAWING NO.
PF-V-8-SL-0001
REV
NR
ECO
0096 NEW 9/20/11
NEE
JPR 9/20/11