HomeMy WebLinkAbout5606-1TRACT N0. 19960
WATER QUALITY MANAGEMENT PLAN
STORM DRAIN IMPROVEMENT PLANS
IN THE CITY OF FONTANA, COUNTY OF SAN BERNARDINO,
STATE OF CALIFORNIA
APN: 0239-131-06, 0239-131-09, 0239-131-10, 0239-131-35, 0239-131-36, 0239-131-38, & 0239-131-39
LIST OF LID BMPS
VICINITY MAP
NOT TO SCALE
CONTECH HS72 CLARIFIER (OR APPROVED EQUAL) CONNECTED TO 96"0 PERFORATED RETENTION PIPE AND TWO (2) TORRENT RESOURCES MAXWELL
A IV INJECTION WELLS. THE CLARIFIER WILL REMOVE SEDIMENT, DEBRIS, TRASH, OILS, AND POLLUTANTS, FROM THE STORMWATER RUNOFF BEFORE
ROUTING IT INTO THE 96" RETENTION PIPE. THE 96" PIPE WILL DRAIN VIA INFILTRATION THROUGH PERFORATIONS AND AN UNDERLYING GRAVEL BED.
THE SYSTEM DRAINAGE WILL BE ASSISTED BY TWO CONNECTED MAXWELL INJECTION WELLS. THE INJECTION WELLS WILL FILL AND INFILTRATE
THROUGH THE BOTTOM. IF IT FILLS THERE WILL BE AN OVERFLOW PIPE THAT WILL DIRECT FLOWS INTO A DEEP GRAVEL DRYWELL FOR INFILTRATION
C) (SEE DETAIL - SHEET 2).
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UNDERGROUND INFILTRATION TRENCH. WATER QUALITY FLOWS WILL BE INTERCEPTED VIA A WATER QUALITY STORM DRAIN SYSTEM. THE TRENCH
B WILL HAVE PERFORATED PIPE SYSTEM THAT WILL SPREAD OUT INCOMING FLOWS FROM THE CDS 5653-10-C CLARIFIER (SEE DETAIL - SHEET 2)
DA1 - DMA A: PARTIAL ON -LOT INFILTRATION:: ON -LOT FLOWS WITHIN THE DA1 - DMA A DRAINAGE
C AREA BOUNDARY WILL BE INTERCEPTED ON -LOT THROUGH THE USE OF PERFORATED
AREA DRAIN LINES SURROUNDED BY GRAVEL. THE SMALL GRAVEL PIT WILL PARTIALLY
RETAIN AND INFILTRATE RUNOFF VOLUME, BEFORE IT LEAVES THE LOT AND TRAVELS TO THE
RETENTION/INFILTRATION SYSTEM IN CITRUS AVENUE. (SEE DETAIL ON SHT 6.)
WATER QUALITY CONSTRUCTION NOTES
QUANTITY
O INSTALL JENSEN PRECAST 24"X24" DRAIN INLET PER DETAIL SHEET 6 _ - - - - - - _ 3 EA
O INSTALL 18" RCP STORM DRAIN (D -LOAD PER PROFILE) - - - - - - - - - - - - 64 LF
O INSTALL 24" RCP STORM DRAIN (D -LOAD PER PROFILE) - - - - - - - - - - - - 1,454 LF
O INSTALL CONTECH CDS5653-10-C CLARIFIER (DETAIL SHEET 6) - - - - - - - - - - 1 EA
O INSTALL 18" HDPE STORM DRAIN - - - - - - - - - - - - - - - - - - - 388 LF
O CONSTRUCT WATER QUALITY INFILTRATION TRENCH PER DETAILS SHEET 2 _ - - - - _ N/A
O CONSTRUCT STORM DRAIN MANHOLE PER CITY OF FONTANA STD PLAN NO. 3013 - - - - 5 EA
O CONSTRUCT JUNCTION STRUCTURE PER CITY OF FONTANA STD PLAN NO 3010 - - - - 1 EA
O CONSTRUCT TRANSITION STRUCTURE PER CITY OF FONTANA STD PLAN NO. 3026- - - - 3 EA
10 INSTALL FLOGARD CATCH BASIN FILTER PER DETAIL SHEET 6 - - - - - - - - - - 3 EA (CFD)
11 CONSTRUCT CONCRETE COLLAR PER CITY OF FONTANA STD PLAN NO 3022 - - - - 2 EA
12 CONSTRUCT GRAVEL TRENCH WITH PERFORATED AREA DRAIN LINE ON -LOT - - - 95 EA.
PER DETAILS ON SHT 6
13 CONSTRUCT MODIFIED MANHOLE PER PLAN AND CITY OF FONTANA STD. 3011- - - - - 1 EA.
NOTES:
1. MAXWELL SYSTEM SHOWN ON THIS PLAN TO TREAT ONLY AREA SHOWN WITHIN THE DA1
TREATMENT AREA BOUNDARY AND HALF WIDTH OF CITRUS AVENUE UP TO DUNCAN CANYON
ROAD. THE RETENTION INFILTRATION SYSTEM WILL TREAT A TOTAL OF 3.5 CFS AND 63,410 CF OF
WATER QUALITY RUNOFF VOLUME.
2. INFILTRATION TRENCH IN FUTURE PARK (PART OF TRACT 19962) WILL TREAT WATER QUALITY
FLOWS FROM DA2 AS WELL AS FLOWS FROM THE FUTURE ARBORETUM PROJECT TO THE NORTH,
AS WELL AS GARDENS STREET AND ARBORETUM AVENUE THE TOTAL WATER QUALITY FLOW
RATE TO BE TREATED WITHIN THE TRENCH IS 12.8 CFS AND 236,517 CF WATER QUALITY RUNOFF
VOLUME. THE TRENCH WILL HAVE AN OVERALL CAPACITY OF 346,335 CF. THE TRENCH IS SIZED
WITH A CONTINGENCY FOR THE FINAL DESIGN OF THE ARBORETUM PROJECT TO THE NORTH.
3. INJECTION WELL DESIGN AND INFILTRATING OUTFLOW RATES FOR STRUCTURAL BMPS ARE BASED
ON A CONSTANT HEAD PERCOLATION TEST PERFORMED ON AN EXISTING MAXWELL PLUS
INJECTION WELL SYSTEM LOCATED IN VESTA WAY APPROXIMATELY 50.0 FT NORTH OF KNOX
AVENUE.
4. CITY OF FONTANA HAS AGREED TO USE AN INFILTRATING SAFETY FACTOR OF 1.0 IN THE DESIGN
OF DEEP INFILTRATION SYSTEMS DUE TO THE HIGH PERFORMANCE OF THE SOILS.
DRAINAGE
AREA
AREA
(SF)
AREA
(ACRES)
DCV(CF)
Qbmp
(CFS)
DA1 - DMAA
777,623
17.9
49,138
2.89
DA1 - DMA B
19,904
0.5
524
0.03
DA2
1,167,297
26.8
73,762
3.9
SHEET INDEX
TITLE - DRAINAGE AREAS 1
INFILTRATION TRENCH/CITRUS AVE BMPS_2
LINE WQA 3
LINE WQB AND LINE WQC 4
LINE WQX 5
DETAILS 6
OWNERMEVELOPER
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NORTH FONTANA INVESTMENT COMPANY, LLC
1156 NORTH MOUNTAIN AVENUE
UPLAND, CA 91786
PHONE: (909) 985-0971
CONTACT: STACEY SASSAMAN
ENGINEER
MADOLE & ASSOCIATES, INC
9302 PITTSBURGH AVENUE, #230
RANCHO CUCAMONGA, CA 91730
PHONE: (909) 481-6322
CONTACT: MARK BERTONE
WOMP17-000005
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