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BAFFLETOP (ISPWC SECTION 2050.2.3.A. a- o � W Z
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20" 18" WIDE ASTM C33 FILTER SAND MENEM�
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BOTTOM ENV - - _ - �5 4S° �5 4S° W 0
OF GAFFE N III-III-III III-III-III-III-III-III-III-III-III-III-I -III-III-III-III-III-I 0 R w W
11=1 11=1 -I 1=1 1=111-11 El 11=1 11=1 I 1=1 1=1 1=1 1=1 1=1 F
ayA III=1 III III-1 I-III-III-III-III=1 =1 =1 I =1 =1 III-III=1 -III III=1 C� W
-W OVERFLOW - - W2= - �s F R �s
III III III III III-III III III=III III III III III III III -1 -1 -111- 1 18" PERF PIPE
ALL SAND AND GREASE TRAPS - - - - - - - - �
ARE 1000 GALLON UNLESS TYPICAL 1000 GALLON Cb C� Cb Cb Cb Cb C� Cb Cb Cb Cb C� Cb o 0 0 o SEE PERFORATION F
OTHERWISE NOTED. SAND/GREASE TRAP BYPASS PIPE 12" SDR-35 TO BYPASS o 0 0 0 0 0 0 0 0 0 0 o w S NA G
0 0 0 0 0 0 0 0 0 0 0 0 0 o ANGULAR SCHEDULE BELOW. a S�� N
PRIVATE (PER ISPWC SD-6241 MH. BYPASS MANHOLES ARE TO BE 30" CRUSHED ROCK* �� G�STF �iJi
SEE PLAN VIEW FOR -NTS-
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PRECAST MANHOLES W 1 SUMP = ���� g o � Q- O
ORIENTATION. ANGULAR 09/01/2023
TRAFFIC-RATED 'STORM DRAIN' LID. 12" �� ��� o 0 o Q
w o o CRUSHED ROCK* o 0 0 0 0 0 0 0 0 _ `s 17 8 8 2
PERF PIPE OUT OF BYPASS MANHOLES TO �o
BE AT 0.00% SLOPE. � ��7?DD
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0 0 0 0 0 0 0 0 0 0 0 0 0 _�
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DESCRIPTION INV. IN. TOP OF BAFFLE INV. OUT IBYPASS BYPASSNV OUT INV NMH BYPASS INV OUMH �F�F OF �P\�
0 0 0 0 0 o c1% o 0 0 1�
180°
N S. C
S&G TRAP #1 2543.89 (12") 2543.79 2543.04 (18") 2544.39 (12") 2544.29 (12") 2543.54 (12") 5 EA. 3/8" DIA. 8 EA. 3/8" DIA.
MONITORING WELL PERFORATIONS IN EACH PERFORATIONS IN EACH CHECKED BY:
" 2544.44 (12") 2544.34 (12") 2543.59 (12") PER ACHD SD-627. 12" PERF PIPE [BYPASS] CORRUGATED PIPE. CORRUGATED PIPE.VALLEY OF VALLEY OF DRA A. BAILEY P.E.
S&G TRAP #2 2543.94 (12 ) 2543.84 2543.09 (18 ) EXTEND 1' BELOW DRAWN BY:
TRENCH. SEE PERFORATION PVC LINER, ACROSS 18" PIPE PERFORATIONS 12" PIPE PERFORATIONS KSC
S&G TRAP #3 2544.29 (12") 2544.19 2543.44 (18") 2544.79 (12") 2544.69 (12") 2543.94 (12") SCHEDULE BELOW. BOTTOM OF ROCK AND
ALONG OUTSIDE EDGES
S&G TRAP #4 2544.86 (12") 2544.76 2544.01 (18") 2545.36 (12") 2545.26 (12") 2544.51 (12") OF ROCK. LINER SHALL SOLID WALL PIPING FROM SAND AND GREASE TRAP OR MANHOLE, TRANSITIONS TO
*NOTE: 0.75"-2" ANGULAR WOVEN GEOTEXTILE FABRIC BE CONTINUOUS (SEAMS PERFORATED PIPE W/IN FIRST FIVE (5) FEET OF VERTICAL SAND FILTER.
S&G TRAP #5 NOT USED ROCK REQUIRED W/ MIN. TYPE II MATERIAL PER ISPWC OR FACTORY SEALED) OR
50% SINGLE FRACTURED SECTION 2050.2.3.A. PROVIDE 12" OVERLAP AT
FACE. (TO BE PLACED BETWEEN S&G TRAP #6 2546.15 (12") 2546.05 2545.30 (18") 2546.65 (12") 2546.55 (12") 2545.80 (12") DRAIN ROCK & SAND) SEAMS.
S&G TRAP #7 2546.18 (12") 2546.08 2545.33 (18") 2546.68 (12") 2546.58 (12") 2545.83 (12")
S&G TRAP #8 2547.14 (12") 2547.04 2546.29 (18") 2547.64 (12") 2547.54 (1 TYPICAL VERTICAL SAND FILTER SECTION2") 2546.79 (12") -NTS- o
" ) 2547.51 (12") 2547.41 (12") 2546.66 (12") NO
S&G TRAP #9 2547.01 (12 ) 2546.91 2546.16 (18 NOT USED.
» 2. GROUNDWATER WAS ENCOUNTERED IN TEST EXCAVATIONS ON THIS SITE. IF GROUNDWATER IS ENCOUNTERED HIGHER THAN INDICATED ON THE o
S&G TRAP #10 2543.32 (12 ) 2543.22 2542.47 (18 ) 2543.52 (12 ) 2543.42 (12 ) 2542.97 (12") PLANS, THE CONTRACTOR SHALL NOTIFY THE ENGINEER IMMEDIATELY FOR REDESIGN BETWEEN GROUNDWATER AND SEEPAGE TRENCH BOTTOM.
UNTIMELY NOTIFICATION OF THE ENGINEER MAY RESULT IN ADDITIONAL COSTS TO THE CONTRACTOR. NO BEDROCK WAS ENCOUNTERED IN ANY OF p w
S&G TRAP #11 2547.12 (12") 2547.02 2546.27 (18") 2547.62 (12") 2547.52 (12") 2546.77 (12") THE TEST PITS. REFER TO GEOTECHNICAL REPORT PREPARED BY ATLAS, DATED FEBRUARY 25, 2022 AND SUBSEQUENT GROUNDWATER MONITORING N o
LOGS.
S&G TRAP #12N 2547.35 (12") 2547.25 2546.50 (18") 2547.85 (12") 2547.75 (12") 2547.00 (12") -TP-1 IN NW CORNER OF DEVELOPMENT SITE - HIGH GW: 2542.50 Li Z
-TP-4 IN SW CORNER OF DEVELOPMENT SITE - HIGH GW: 2543.48
S&G TRAP #12S 2547.35 (12") 2547.25 2546.50 (18") 2547.85 (12") 2547.75 (12") 2547.00 (12") BOTTOM OF ALL VERTICAL SAND FILTERS SET ABOVE MONITORED ELEVATIONS, LESS FILTER #10; SET DEEPER DUE TO CONNECTION TO EXISTING
CONDITIONS. BOTTOM OF SAND LENS SET HIGHER THAN BOTTOM OF ADJACENT EXISTING VERTICAL SAND LENS IN AVIATOR SUB. P )
3. ALL MONITOR WELLS SHALL HAVE A CONCRETE APRON POURED AROUND THE CAP. Z
4. CONTRACTOR TO HAVE PERCOLATION TEST PERFORMED BY SOILS ENGINEER AFTER SEEPAGE TRENCH IS FULLY EXCAVATED. QUALIFIED
1 2 GEOTECHNICAL ENGINEER MUST VERIFY THE INFILTRATION RATE AFTER THE FACILITY IS FULLY EXCAVATED. IF THE PERCOLATION IS LESS THAN
FINISH GRADE SPECIFIED BY THE SOILS REPORT AND ENGINEER (4"/HOUR), CONTRACTOR MAY NEED TO BLAST OR BORE TO CREATE CONDUIT FOR DRAINAGE TO
LEGEND: OCCUR OR REDESIGN THE SYSTEM TO ACHIEVE THE REQUIRED INFILTRATION.
=III = 1. WELL COVER, 8" DIAM. WATERTIGHT
GALVANIZED STEEL COVER AND CANISTER. 5. EXCAVATION OF TRENCH IS TO OCCUR WITH A QUALIFIED GEOTECHNICAL ENGINEER AND/OR PROJECT ENGINEER ON-SITE. RECORD OF EXCAVATION
III I' 7
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� 2. 2 OR 3 BOLT LID WITH his" HEAD AND SAE IS REQUIRED FOR ALL DRAINAGE FACILITIES, COMPLETED BY SAID QUALIFIED GEOTECHNICAL ENGINEER OR PROJECT ENGINEER. L II w�i THREADS, GASKETED.
® 3. CONCRETE (COLLAR), CLASS 3000 (ISPWC W Q
3 _ SECTION 703).
1 4. %" DIAMETER HOLES OR SLOTS CUT INTO PIPE
AT 3" ON CENTER.
3 5. TRACER WIRE SHALL BE PLACED ON OUTSIDE
w 5 PLAN CONCRETE COLLAR OF PVC PIPE, MINIMUM 18 GAUGE, INSULATED,
SINGLE-CONDUCTOR COPPER WIRE, INSULATION TABLE OF VERTICAL SAND FILTER DIMENSIONS I I
z COLOR SHALL BE GREEN WITH THREE 6" W
DIAMETER COILS.
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6. PIPE SHALL BE PERFORATED PVC, ASTM ' ^ 0
off' N ��18 �� D-3035, SDR 35. WELLS BACKFILLED IN A PIT BOTTOM OF TOP OF VOID V
w '; REQUIRE 6" PIPE. DRILLED WELLS MAY USE 4" DEPTH LENGTH WIDTH WIDTH MIN. FINISHED V50 TOTAL CAPACITY TOTAL
o a %. Fl[ CO PIPE. DESCRIPTION (FT) (FT) (2-YR, FT) (OVERFLOW, FT) VOID STORAGE STORAGE GRADE ELEV. (FT-3) (FT-3)
> ELEVATION ELEVATION Q
N��`' 1 8 7. NONWOVEN FILTER FABRIC AROUND OPENINGS
o,� 1 AND BOTTOM, FABRIC OVER CHIPS/DRAIN VERTICAL SAND FILTER #1 3.5' 116' 8.0' 11.0' 2542.54 2546.04 2547.54 2,909 3,086
0 3 ROCK. W
8. POLYPROPYLENE FIVER REINFORCEMENT AT 1
r(A 6 Xi LBS/CY. VERTICAL SAND FILTER #2 3.5' 120' 6.0' 8.0' 2542.59 2546.09 2547.59 2,049 2,352
m 3 SECTION CONCRETE COLLAR 9• BACKFILL MATERIAL TO MATCH STORAGE MEDIA Q
o FOR OBSERVATION WELLS LOCATED WITHIN A VERTICAL SAND FILTER #3 3.5' 125' 8.0' 11.0' 2542.94 2546.44 2547.94 3123 3,325 Q
3 w BMP FACILITY. USE PIPE BEDDING CHIPS FOR
w OBSERVATION WELLS LOCATED OUTSIDE BMP
m� 0 0 , 4 FACILITIES. VERTICAL SAND FILTER #4 3.5' 230' 6.0' 7.0' 2543.51 2547.01 2548.51 3,692 4,186
N o o NO
VJ W
0 ,> g MONITORING WELL A. T GROUNDWATER OBSERVATION WELLS ARE FOR VERTICAL SAND FILTER #5 - NOT USED
PER ACHD SD MEASUREMENT OF GROUNDWATER LEVELS
0 0 WITHIN VERTICAL SAND FILTER 6 II ..
w o o > NOT TO SCALE OR NEAR STORM DRAINAGE FACILITIES. # 3.5' 65' 6.0' 9.0' 2544.80 2548.30 2549.80 1,265 1,365 L.L
p "� o o B. THIS DETAIL IS FOR WELLS INSTALLED BY
0 0 , DRILLING OR BY EXCAVATED PITS. VERTICAL SAND FILTER #7 3.5' 50' 6.0' 8.0' 2544.83 2548.33 2549.83 798 980
0 0 C. LOCATION OF GROUNDWATER WELLS SHALL BE
0 0 APPROVED BY ACHD
0 0 D. OBSERVATION WELLS NOT ALLOWED IN CURB VERTICAL SAND FILTER #8 3.5' 55' 6.0' 8.0' 2544.79 2548.29 2549.79 1,009 1,078
MONITOR WELL LOCATIONS 0R VALLEY GUTTER SECTION. VERTICAL SAND FILTER #9 4.0' 126' 5.0' 6.0' 2545.66 2549.16 2550.66 1,928 2,200
7 _ TWO (2) WELLS PER SEEPAGE TRENCH. ' 20' 9.0' 13.0 VERTICAL SAND FILTER #10 3.5 2541.97 2545.47 2546.97 584 616
8 ONE (1) WELL 5' FROM END OF TRENCH '
WELL SECTION ONE (1) WELL 50'+ FROM TRENCH, TYPICALLY ACROSS Z
STREET IN SIDEWALK VERTICAL SAND FILTER #11 3.5' 60' 6.0' 7.0' 2545.27 2548.77 2550.27 951 1,092 z
0.
VERTICAL SAND FILTER #12 4.5' 92' 7.0' 7.0' 2545.00 2549.50 2551.00 1,793 2,318 C) WI I
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DATE:
8-25-2023
PROJECT:
C2022-006
SHEET