HomeMy WebLinkAboutAs-built Site Plan 04.02.2019MACKEY Design Calculations OWTS
GENERAL NOTES:
k` The design flow is calculated as follows for low useage commercial facility onsite wastewater
treatment system (OWTS) 1. THE OWTS AS SHOWN ON THE PLAN AND THE DETAILS WERE DESIGNED BY SOPRIS ENGINEERING.
- 1
•, Existing 8ted Dome Building •.y
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85.E
20
GRAPHIC
0 10 20
SCALE
40 80
From the Regulation 43 usage Table 6-2 :
Max. Design flow (Qd) _ # of people x (avg.per capita flow) 2. THE EXISTING/ PROPOSED LOT CONDITIONS AND SURVEY/PLAT INFORMATION SHOWN IS BASED ON
Qd=daily worker office: 5 persons @ 15 gpd = 5 x 15 = 75 gpd THE SITE PLAN SHEET 1 OF 1, BY SEXTON SURVEY COMPANY, DATED 10/31/18
Qd=transient Vistor: 5 persons @ 5 gpd = 5 x 5 = 25 gpd 3. PRIMARY OWNER NAME AND ADDRESS: MACKEY, GREGG, PO BOX 398, BASALT, CO, 81621
Total Design flow Qd =100 gpd 4. SITE ADDRESS: 50 110 COUNTY RD, GLENWOOD SPRINGS
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. 07OQ �./5,,.
I /4'
(ft/..
•4:1)Septic
Tank Design:5. Legal Summary: SECTION: 7 TOWNSHIP: 7 RANGE: 88 TR IN LOTS 5 & 1
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/- ;
Use a 1000 gallon, two compartment concrete septic tank with an effluent filter outlet sanitary 6. Parcel 2393-074-00-012
( IN FEET) tee in the second chamber. Tank shall be installed with sealed concrete risers and lids to the
1 inch = 20 ft. finish grade surface. 7. Parcel GARFIELD Number: SEPTIC PERMIT#: permit # SEPT11 18 5581 ISSUED11 29 18
Sub Surface Conditions and Testing: 8. CONTRACTOR: TALLY HO CONSTRUCTION 970 625 0208
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SS1ONAL "e
Subsurface soil investigations and USDA soil texture method tests were performed by Sopris
Engineering on October 25, 2018. The soils in the area of the proposed absorption field were OWTS SYSTEM NOTES
sampled and characterized by application of the USDA soil texture method analysis. The soils
3.872 Ams 1 were tested to determine the hydraulic loading rate and to confirm the appropriate absorptive 1. ALL MATERIALS AND INSTALLATION SHALL CONFORM TO STATE AND COUNTY ONSITE
28,6' fik surface suitable for conventional absorption systems in native soils. A shallow and deep WASTEWATER TREATMENT SYSTEM (OWTS) REGULATIONS.
' W e - 7 excavated pit was observed in the East central portion of the site adjacent to the proposed field
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location. The soils below 4 to 9 inches of mixed surface fill & topsoil consist of medium dense 2. IT IS THE RESPONSIBILITY OF THE CONTRACTOR TO CONTACT ALL UTILITY COMPANIES FOR
sandy silt loam with moderate granular to slightly blocky structure with some cobbles and FIELD LOCATIONS OF UTILITIES PRIOR TO CONSTRUCTION AND EXCAVATION.
INITIALS DATE
DESIGNED BY
DRAWN BY
CHECKED BY
05 Building 20,0. �" gravels. The percentage of cobbles and gravest below 24 inches was less than 20% in the sandy
r (Steel'•� silt loam to the 7 foot depth explored. The soil appears to be consistent across the site. 3. ALL SEWER LINES TO BE SDR 35 OR SCHEDULE 40 P.V.C. PIPE UNLESS NOTED OTHERWISE.
�+ 4. INSTALL A TWO-WAY CLEAN OUT ON THE SERVICE LINE FROM THE HOUSE AND AN
" *� - 7 ]�� The native soils sampled from 2-3 feet below the surface are characterized as a soil type 2
8.I consisting of silt loam texture with moderate granular structure. This soil has an effective ADDITIONAL CLEANOUT WITHIN 100' SECTION OF EFFLUENT DISCHARGE PIPE .
_ i loading rate for conventional soil treatment of 0,60 gal/S.F./day fora level 1 conventional
cl, 5. THE SEPTIC TANK SHALL BE INSTALLED LEVEL ON COMPACTED EARTH. INSTALL WATERTIGHT
#pvic ofL-Gravel � treatment system. The equivalent percolation rate is assumed to be approximately 16-25
I I RISERS AS NECESSARY TO BRING ALL REQUIRED ACCESS POINTS TO THE FINISHED SURFACE
F' minutes per inch. Increased quantities of cobbles and gravel are encountered at shallow depths
within 2 -feet of the existing surface grade. No free water was encountered in the excavations GRADE. BACKFILL WITH SUITABLE NATIVE SOIL FREE OF BOULDER AND ROCK IN EXCESS OF 3"
1.ser
DIAMETER,
on site. Groundwater levels are expected to be well below 10 feet from the existing surface
{ 5% grades. The soils appear suitable for a conventional shallow absorption field consisting of
ABSORPTION/TREATMENT FIELD INSTALLATION NOTE: 6. A SANITARY BAFFLE TEE IS REQUIRED ON THE SEPTIC TANK INLET AND OUTLET. INSTALL THE
gravelless infiltration chamber units.. INLET AND OUTLET TEES PLUMB AND IN A POSITION TO ALLOW EASY INSPECTION AND
1. THE BOTTOM OF EACH TRENCH WAS EXCAVATED TO A MAXIMUM DEPTH OF MAINTENANCE OF TANK FROM THE TANK RISERS.
r Treatment Soil Treatment Unit/Absorption System Design:
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*4044.
36 -INCHES BELOW THE EXISTING SURFACE GRADES, WITHIN THE NATIVE SANDY SILT
LOAM SOILS. THE TRENCHES WERE EXCAVATED TO THE SPECIFIED DEPTH WITH THE 7. INSTALL A 4" EFFLUENT FILTER ON THE 4" OUTLET TEE OF THE SEPTIC TANK. THE FILTER
BOTTOM ABSORPTIVE SURFACE SCARIFIED BY A FINAL PASS OF THE EXCAVATOR The treatment/absorption field is designed based on utilizing the effective Long Term SHOULD BE INSPECTED EVERY SIX MONTHS. THE EFFLUENT FILTER SHALL BE MAINTAINED
Acceptance Rate (LTAR) for the native soils and the application of appropriate loading factors AND CLEANED WHEN THE TANK IS PERIODICALLY PUMPED OR AS NECESSARY. INSTALL A
BUCKET TEETH.
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4�EXISTING DRIVEWAY•
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\ .--. . Proposed '- . 1
- Gravel -• +�
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for a soil treatment unit system utilizing gravity distribution to gravelless chamber trenches. The SUITABLE EXTENSION ON THE FILTER WITH A HANDLE TO BE WITHIN 6" BELOW THE ACCESS
{) new treatment system and absorption field will consist of gravity distribution of septic tank LID,
2. THE CHAMBERS WERE INSTALLED ON LEVEL GRADE IN EACH TRENCH. THE INSTALLED effluent via a distribution box to individual chamber trenches with treatment across the scarified
CHAMBERS & END CAPS WERE COVERED WITH NON -WOVEN FILTER FABRIC &
INSTALLED 2 COMPARTMENT 1000 GALLON CONCRETE SEPTIC TANK BACKFILLED WITH A MINIMUM 12 INCHES OF COVER OVER THE TOP OF THE native soil absorptive surface. 8. THE CONTRACTOR SHALL ENSURE THAT THE SEWER LINES, SEPTIC TANK AND RISERS ARE
(VALLEY PRECAST ITEM-1000T-2CP-EF) CHAMBERS. WATERTIGHT. ALL PLUMBING FIXTURES AND OWTS COMPONENTS SHALL BE INSTALLED AND
INSTALLED INLET SANITARY TEE & OUTLET EFFLUENT FILTER ASSEMBLY. Long Term Acceptance Rate (LTAR) MAINTAINED TO AVOID SURFACE OR GROUNDWATER FROM ENTERING THE SYSTEM AND TO
INSTALLED WITH (2) 24" DIA, BY 24" DEEP CONCRETE RISERS WITH LIDS. 3. THE FINISH GRADE ACROSS THE FIELD ARE SLIGHTLY MOUNDED ABOVE EXISTING Wastewater Treatment Level 1; loading rate for silt loam is (0,60 gal./S.F./day) for soil type 2,; PREVENT LEAKAGE FROM THE SYSTEM, IN-HOUSE PLUMBING FIXTURES SHALL BE
1 ADJACENT GRADES A MINIMUM 9 -INCHES ALONG THE CENTER OF THE FIELD & A Loading factors; (Table 10-2, Gravity application trenches = 1.0) and MAINTAINED TO PREVENT EXCESS WATER FROM ENTERING THE SEPTIC SYSTEM.
MINIMUM 6 -INCHES AROUND THE PERIMETER ABOVE EXISTING GRADES, (Table 10-3, gravelless chambers =0.7)
9, THE DIMENSIONS AND NOTES SHOWN ON THE PLAN INDICATE MINIMUM AREA, LENGTH,
4. INSTALLED 4" PVC RISER PIPE INSPECTION PORT AT EACH QUICK -4 CHAMBER TRENCH A(sf) = Qd .: A =Area; WIDTHS AND SEPARATION DISTANCES FOR THE TRENCHES, BED OR MOUNDED ABSORPTION
• + IN THE TOP PENETRATION CUT OUT ON EACH END CHAMBER UNIT. RISER EXTEND W/ LTAR LTAR = 0.60 Gal/S.F./day for silt loam FIELD.
• .. • + THREADED CAP MIN. 12" ABOVE FINISH GRADE. Qd = flow (gal/day) =100 gpd
. 4" SCHD-40 PVC EFFLUENT L.F.1=1.0 Gravity Distribution 10, THE ABSORPTION TRENCHES SHALL BE EXCAVATED TO LEVEL GRADE IN NATIVE EARTH, THE
PIPE @MIN. 2%, ty TRENCH BOTTOM AND SIDEWALLS SHALL BE SCARIFIED AND/OR RACKED IF SMEARING
'RIS E NGINEERING, LLC.
CIVIL CONSULTANTS
502 MAIN STREET
CARBONDALE, CO 81623
(970) 704-0311
FAX: (970)-704-0313
5. ENGINEER INSPECTED EXCAVATION AT TIME OF CONSTRUCTION TO VERIFY SOIL L.F.2=0.7 Chambers
° \ CONDITIONS & LAYOUT OF TRENCH, ALL WORK WAS APPROVED BY THE ENGINEER OCCURS. IF EXCESSIVE LARGE COBBLES OR BOULDERS ARE ENCOUNTERED IN ANY PART OF
. , 4" PVC DISTRIBUTION PIPE, INSTALL PRIOR TO BACKFILL OF TANK, PIPING AND CHAMBERS. A(sf) = 100 gpd x 1.0 x 0.7 = 70 S.F. THE EXCAVATION OVER 6" FROM THE PROPOSED TRENCH BOTTOM SURFACE, OVER
, EXCAVATE AND BACKFILL WITH SAND.
�• . , • . 4 INTO UPPER END PENETRATION 0.60 Gal/S.F./day
`
. , a OF END CAP (TYP.) Faiating
r • • • ' INSTALL CHAMBER END CAP Number of quick -4 chambers: 11, THE LEACHING CHAMBERS SHALL BE INSTALLED LEVEL WITH A MINIMUM COVER OF 10
� �' 1 q INCHES NOT TO EXCEED 24 INCHES.
II ` • .. • ON ALL END CHAMBERS 70 S.F = 5.8 chambers, Use 6 Quick -4 Infiltrator or 5 Biodiffuser chambers
0
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" �` EXCAVATION DEPTH APPROX, � F 12 S.F./Chamber 12. LEACHING CHAMBERS WILL BE PLACED IN THE EXCAVATION OVER THE NATIVE SOIL OR
k# SELECT SOIL REPLACEMENT OR ASTM 33 SAND LEVELING COURSE. END CAPS SHALL BE
3' BELOW EXISTING GRADE
N• . Use Use 6 Quick -4 Infiltrator or 5 Biodiffuser chambers in a single trench 25' long by 3' wide INSTALLED ON THE END CHAMBERS IN EACH TRENCH.
N plus two end caps as delineated on the plan. The septic tank effluent will be gravity distributed
TOP PERIMETER OF FIELD SURFACE IS
1 flto the head of the chamber row via a 4" distribution pipe from the septic tank. Additional soil 13, VERTICAL INSPECTION PORTS SHALL BE INSTALLED FROM THE PRE MARKED HOLE ON THE
*�ir iii. 4, MOUNDED 6" ABOVE SURFACE GRADES evaluation will be performed during construction to verify the soils in the excavation. TOP OF EACH END CHAMBER CAP , (TYP. BOTH ENDS OF EACH ROW) THE PORTS MAY HAVE
ABSORPTION/TREATMENT FIELD THREADED CAPS AT GRADE.
DATE
_ •
' y INSTALLED 6 QUICK -4 CHAMBERS IN 1 TRENCH
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rt , 26.00'IIIII 3.00' FOR A TOTAL ABSORPTION AREA OF 75 S.F. 14. THE CHAMBERS WILL BE BACKFILLED WITH EXCAVATED MATERIAL VOID OF ROCKS, THE
- k BACKFILL MATERIAL SHALL NOT EXCEED 2 1/2" DIAMETER AND SHALL BE PLACED TO AT
m
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1 , • . f�' ' : - INSTALLED 4" ii 1
Ili
LEAST 6 INCHES ABOVE THE TOP OF THE CHAMBERS. THE TOP OF THE PLACED BACKFILL
SHALL BE COVERED WITH A LAYER OF FILTER FABRIC. A MINIMUM 4" DEPTH OF TOPSOIL IS
t I , r` - -
2 -WAY CLEANOUT;' 5 1
+ + r '� ).
. ' .1 n 5 y
+: f •- rr 4" PVC GRAVITY SEWER INSTALLED 4" RISER PIPE INSPECTION PORT 11
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l' • y � t PIPE. 2%SLOPE±, BED &• EXTEND RISER W/ THREADED CAP MIN. 12" ABOVE 4
'1000 Callon Top Seam
#
Two CompartmentMANUFACTURES
I T'ZC+P
TO BE PLACED ABOVE THE BACKFILL TO THE SURFACE & RE VEGETATED.
15. INSTALLATION OF LEACHING CHAMBERS SHALL BE IN CONFORMANCE WITH THE
INSTALLATION INSTRUCTIONS.
{ , 1 , BACKFILL W/ CLASS -6 '- FINISH GRADE (TYP. EACH CHAMBER END CAP) li
t • • • is . %;
Y 4
16. THE ABSORPTION TRENCHES/BED OR MOUND MUST BE GENERALLY MARKED AT THE FOUR
CORNERS WITH INSPECTION PORTS AND/OR BURIED REBAR, THE FIELDS MUST BE PROTECTED
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RPSIrN inr 5 111
nes9ry Top
FROM VEHICULAR AND LIVESTOCK TRAFFIC,
` I „ •~ •-. -PROTECT OWTS FIELD AREA FROM
i•
- VEHICULAR TRAFFIC OR ANY
'• � °L 1 , '� , i rL � DISTURBANCE BY PLACEMENT OF
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17. THE ABSORPTION FIELD SURFACES MUST BE SLOPED OR SLIGHTLY MOUNDED TO DIVERT
SURFACEDRAINAGEAWAYFROMTHEFIELD.
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z j CONCRETE BARRIERS OR BOLLARDS �' 1
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• Trek to be set on r mm, sand
bed or Pea gravel
• Tank to be backriled uniformly on
alli lifts less than 24' and
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18. THE ENTIRE ABSORPTION FIELD SURFACE MUST BE RE VEGETATED,
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19. THE ABSORPTION FIELD SHALL BE INSTALLED PER THE REQUIRED SETBACK DISTANCES: 10
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with PVC rPump args Phan metallPp
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feet from any property line.
25 feet from any potable water supply line.
20 feet from any occupied dwelling,
100 feet from any well, spring or cistern.
50 feet from any stream or water course.
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DISTRIBUTION SYSTEM NOTES:
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COMPARTMENT OF THE SEPTIC TANK.
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➢iggenq Specs Invert Dimensions Net Capacity
13' Lnng y S' Wein In Ini awtlat Langth Width Meigh1 Weft Side Oullal Tefel
56" hakes/ inlet 56" 53" 111" 513 68- 587 gal 323 gal 1010 gal
Net Weight
Lid Tnnk Intel
2520 Lha 9380 Ihs 12000 Ihs
TEM PLAN
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4• -t °° 1 3492- L " '•" •. OF THE SIXTH PRINCIPAL MERrD
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COUNTY OF GARFIELD, STATE OF' CO,
50 County Road 110
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DIVERT SURFACE
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TRENCH TO
WATER
4" PVC INLET PORT
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WATER TREA
RUCTED OWTS F
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IN END CAP
6'
.w.w.rr ¢� __ �.' w __ p 3.872 Acre.:
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3' MIN
' MIN
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BACKFILL WITH SCREENED •
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7 `� °"
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OWTS 1��',S'IGN PLAN NATIVE, YARD OR LANDSCAPED SURFACE ONSITE SOILS FREE OF ROCKS IN EXCESS
• • •
/A/�VA��� <<;�A
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ONSITE WASTE
AS CONST
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OF 3" DIAMETER OR USE 3/4" TO 1.5'
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\/ 12"-36"
••8 ararar.
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/S SCREENED ROCK
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CONNECT INDIVIDUAL 4" DISTRIBUTION PIPE
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TO HEAD OF EACH CHAMBER TRENCH (TYPICAL EACH TRENCH).
INSTALL CONNECTION AS NEEDED FROM END OR SIDE INLET
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/��/. �/v , FILTER FABRIC
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LEACHING
CHAMBER
v% 12"
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PORT OF EACH INFILTRATOR CHAMBER END CAP. 6" MIN.
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EXCAVATED MATERIAL COMPACTED BACKFILL LAYER NATURAL ONSITE
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TO 90% STANDARD PROCTOR SOILS FREE OF ROCKS
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CHAMBER END CAP
4" MIN.
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SCARIFY/TILL BOTTOM SURFACE TOA DEPTH
OF 3" AND PLACE MIN. 3" OF ASTM -33
SAND LEVELING COURSE. NOTE: ALL CHAMBERS
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LOAM SOIL,
IN EACH TRENCH MUST BE INSTALLED ON LEVEL
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PROPERTY D R`FITON ~~
'11 SUITABLE BACKFILL OR GRADE OVER 3" ASTM -33 FILTER SAND LEVELING COURSE.
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4" MAXIMUM DEPTH OF TRENCHES NOT TO EXCEED 36" BELOW PROPOSED
,mA= m „ 6O A�a ®„
�'��\' r~ CLASS 6 ROAD BASE
SURFACE GRADES. INLET AND END CAPS ARE TO BE INSTALLED ON EACH
omr...ErwesvuopponarAmysTcruep•WDLCIT ,S........., v ro �„ a
YrannUir LW ALM, 15fee 14•7 ALONG Tx s Amc a, CM. TO 173I 161.4,011a•a, RIUNlia Of • TIM .e,
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COMPACTED SUBGRADE END CHAMBER ROW, IF EXCESSIVE LARGE COBBLES OR BOULDERS ARE
l*1`�(�l, ENCOUNTERED IN ANY PART OF THE EXCAVATION, OVER EXCVATE AND
DATE: APR 2, 2019
-_� BACKFILL WITH SAND OR SUITABLE SCREENED NATIVE SOILS.
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TRENCH CROSS-SECTION FOR
JOB NO. 18197.01
"9.....10eCHAMBER
°rv.°a.r�.,.ar�,�.r.�dr�r�-=-� "�
END CAP CONNECTION DETAIL
SDR -35,26 OR SCHD-40 PIPES CHAMBER TRENCH CROSS SECTION DETAIL
N.T.S.
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N.T.S. N.T.S. G:\2016\16094\CIVIL\CivilDWGs\DE\23930700012-AC-RECORD-OWTSDwg-Mackey.dwg
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