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0 2 WASHE� D GEOTEXTILES SHALL CONFORM TO THE REQUIREMENTS DRAIN�OCKM OF ACHD POLICY MANUAL SECTION 8202.23. SEAMS J
� �/ w SHALL OVERLAP A MINIMUM OF 1'. 12" INLET PIPE PER PLAN BAFFLE 'C' i E
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� MIN. ~ ELEVATION ELEVATION 18" OUTLET PIPE PER PLAN
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OUTLET PIPE PER PLAN I
NOT ENCOUNTERED
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PORTION OF OBSERVATION WELL LYING o > w
o IN DRAINAGE SAND MUST BE WRAPPED > z w p
WITH TYPE I DRAINAGE GEOTEXTILE PER Q J PLAN VIEW °
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(ACHD BMP SEE < STRUCTURE NAME SIZE RIM ELEV. INV. ELEV. IN BAFFLE "B" ELEV. BAFFLE "C" ELEV. INV. ELEV. OUT w
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DETAIL 2 THISIS SHEET. z z
o o ACHD SG TRAP #1-1 1000 GALLON 2706.84' 2701.85' 2701.75' 2701.25' 2701.00'
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0 5' J ACHD SG TRAP #2-1 1500 GALLON 2710.73' 2704.35' 2704.25' 2703.75' 2703.50' cj
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w 18" PERFORATED PIPE WITH PERFORATIONS TOP HALF ONLY � ACHD SG TRAP #3-1 1000 GALLON 2699.04' 2694.85' 2694.75' 2694.25' 2694.00' W N
O O ACHD SG TRAP #4-1 1000 GALLON 2694.39' 2690.85' 2690.75' 2690.25' 2690.00' DESIGNED: C. GRAHAM
0 o ACHD SG TRAP #5-1 1000 GALLON 2697.26' 2693.35 2693.25' 2692.75' 2692.50' DRAWN: L. HAASE
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j INLET PIPE PER PLAN ACHD SG TRAP #6-1 1500 GALLON 2711.71' 2707.85' 2707.75' 2707.25' 2707.00'Ld
CHECKED: C. GRAHAM
APPROVED: C. GRAHAM
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0 50' MIN. PLAN VIEW OBSERVATION WELL 5' MIN. SAND AND GREASE TRAP DETAIL (ACHD BMP #01 ) 2
PER ACHD SD-627 ELECTRONIC MARKERS PLACED ON CORNER SCALE: NOT TO SCALE C9 2 PREPARED FOR:
o OF FACILITY. COORDINATE WITH ACHD G20 LLC
INSPECTION STAFF FOR PLACEMENT OF
a M INSTALL 20 MIL HDPE LINER ALONG MARKERS DURING CONSTRUCTION PRIOR PO BOX 593
al�Ld SOUTH SIDE AND ENDS OF SEEPAGE TO BACKFILLING. EAGLE, ID 83616
BED #4 FOR REDUCED SEPARATION
>_ TO WATER MAIN
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Q OBSERVATION WELL
PER ACHD SD-627
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J NOTES
J a 100-YEAR WATER SURFACE ELEVATION
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1. ACCORDING TO THE PROJECT GEOTECHNICAL REPORT PREPARED BY CMT ENGINEERING LABORATORIES w TEMP SWALE #7A=2693.00'
0 DATED SEPTEMBER 12, 2019, GROUNDWATER WAS NOT ENCOUNTERED DURING GEOTECHNICAL 100-YEAR VOLUME=437 CF
EXPLORATION. CONTRACTOR SHALL NOTIFY THE ENGINEER IMMEDIATELY IF GROUNDWATER IS
w ENCOUNTERED WITHIN 3-FEET OF THE BOTTOM DESIGN ELEVATION FROM ANY INFILTRATION FACILITY `O TEMP SWALE #7B=2693.00'
V) AND/OR IF IT IS HIGHER THAN ANTICIPATED. \ \ 100-YEAR VOLUME=204 CF \ \
j 2. REFER TO ACHD BMP 20 FOR ADDITIONAL INFORMATION REGARDING SEEPAGE BED CONSTRUCTION. /\�\\\j\\\\ \\\\\\1\\N\
w 3. ACHD STAFF MUST VERIFY FACILITY INFILTRATION RATE AFTER FACILITY IS FULLY EXCAVATED. // r\ \ \/r �� O (�
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4. IF ROCK IS ENCOUNTERED DURING FACILITY EXCAVATION, CONTRACTOR TO HAVE TEST PERFORMED BY //\\//\\ \ w w `��' /r\/r�\/� V)
SOILS ENGINEER AFTER SEEPAGE TRENCH IS FULLY EXCAVATED. IF THE PERCOLATION TEST IS LESS \ J
// // S% ' < // //, / z Z Q
w THAN SPECIFIED w CREATE CONDUIT BY THE
HDRAINAGE REPORT
OCCURDORN RIEDESIGN CONTRACTOR
TEM TO ACHIEVE HE BLAST
REQUIREDRE TO \ \\/ \\ F SODA = w �� \ \/ O Q
\ o N BOTTOM ELEV V
INFILTRATION. /r r F w r\/r\/ J Q
TEMP SWALE #7A=2691.50'
j\ TEMP SWALE #76=2692.00' / \\ \\/`� > Z z
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SEEPAGE BED TABLE ��///////////////////////////////////// pip Q
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SEEPAGE BED NO. SEEPAGE BED DIMS TOP OF ROCK ELEV. BOTTOM OF ROCK ELEV. BOTTOM OF SAND ELEV. PERF. PIPE INVERT PERF. PIPE DIAMETER 100-YEAR VOLUME DESIGN INFILTRATION RATE
z ACHD SEEPAGE BED #1 8'Wx42'Lx6'D 2705.00' 2699.00' 2697.50' 2701.00' (1) 18" 1,067 CF 8 IN/HR TEMPORARY SWALE SUMMARY 0
cn SWALE TOP SWALE BOTTOM 0
= ACHD SEEPAGE BED #2 15'Wx95'Lx8'D 2706.00' 2698.00' 2696.50' 2703.50' (1) 18" 5,547 CF 8 IN/HR SWALE NO. AVERAGE DEPTH (FT) ce 2 O
DIMENSIONS (WxL) DIMENSIONS (WxL)
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J ACHD SEEPAGE BED #3 15'Wx64'Dx8'D 2797.50' 2689.50' 2688.00' 2694.00' (1) 18" 3,738 CF 8 IN/HR #7A 1.50 16x42 430 z V)
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cn #7B 1.00 12x38 4x30
Y ACHD SEEPAGE BED #4 12'Wx72'Lx8'D 2693.00' 2685.00' 2683.50' 2690.00' (1) 18" 3,368 CF 8 IN/HR
ACHD SEEPAGE BED #5 12'Wx56'Lx8'D 2695.50' 2687.50' 2686.00' 2692.50' (1) 18" 2,618 CF 8 IN/HR
TEMPORARY SWALE CROSS SECTION 3
�n ACHD SEEPAGE BED #6 12'Wx97'Lx11'D 2710.00' 2699.00' 2697.50' 2707.00' (1) 18" 5,930 CF 8 IN/HR SCALE: NOT TO SCALE C9.2
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SEEPAGE BED DETAIL (ACHD BMP #20) V) CSW PROJECT NO. 19022
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I- SCALE: NOT TO SCALE C9.2 Q DRAWING DATE 04/10/2024
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