PERMFILE62703

• Permit No: C1981029
• IBM Index Class Name: Permit File
• Doc Date: 11/21/1986
• Doc Name: AS BUILT LOWER IMPOUNDMENT NO 1
• Section_Exhibit Name: MAP 13
• Media Type: M
• Archive: No

L
OUTLET RISER, SEE DETAIL C
EXISTING GROUND - -�
(ASSUMED DATUM)
EXCAVATEW
18 INCH LOW LEVEL OUTLET GATE
DAM SECTION, IMPOUNDMENT #1
SCALE: NONE
DAM CREST 7:
7:
7
SPILL\
73:
~
w 7
w
TOP OF RISER Z
0
F
a
>
w 7
J
w
W
O
a
LL
N
7
7
2'
7323.53
ALIGNMENT AND GRADE OF OUTLET PIPE
WERE DETERMINED IN FIELD DURING
CONSTRUCTION
I
CAPACITY (ACRE FEET)
2 -5 --30 —'1st ELEV. 7336_0
PROTECTIVE VEGETATION
I
3' MIN. J1
1
0.6 0.5 0.4 0.3 0.2 011 0
AREA (ACRES)
APPROXIMATE CAPACITY CURVES, IMPOUNDMENT #1
i,'!'Lity, L1c•,11 (111 ^I\r !k rvl,„U1C, tlknt thl, IlLtlr
.,:, Owen prt•u,er'eu In accoru.lnce with standard
.q,Lreering nr.e(:tict -s and under tree direction
ail a re_gai te'rewl U"ui rns lUl Lil civjin• ter Or geolO—
;:st aria 1S at'ClmAtt' E11U! rt'Ure-;t_ntdtl Ve. -
t
�.Leunen P. Antony
_H%. d,) Ri,n.ster'esl Prote,:sior"] Engineer
ANTI SEEP COLLARS
KEY TRENCH
REBARSCREEN
It 4 BARS AT 2"
CC SPACING
2'
3'
RIP- RAP
THE EMBANKMENT AND THE OUTLET PIPE WERE FOUNDED ON BEDROCK
OR COMPETENT FOUNDATION MATERIAL AS DETERMINED IN THE FIELD BY
EXISTING GROUND THE ENGINEER. FOUNDATION STRIPPING AND PREPARATION OF THE
)ASSUMED DATUM) FOUNDATION AND ABUTMENTS WHERE SUBJECT TO THE APPROVAL OF THE
ENGINEER.
7323.53 THE EMBANKMENT WAS CONSTRUCTED IN ACCORDANCE WITH APPROVED
180CMP SPECIFICATIONS. THE FOLLOWING ARE MINIMUM REQUIREMENTS
AND ARE NOT ALL INCLUSIVE OF THE SPECIFICATIONS
AI THE EMBANKMENT WAS CONSTRUCTED OF RELATIVELY IMPER-
VIOUS MATERIALS CONTAINING AT LEAST 30 PERCENT PASSING THE
NO 200 SIEVE AND SHALL HAVE NO PARTICLES LARGER THAN 5 INCHES
BI THE EMBANKMENT WAS COMPACTED TO AT LEAST 90 PERCENT
RELATIVE COMPACTION IN ACCORDANCE WITH ASTM D -1557.
OUTLET RISER DETAIL
SCALE: NONE
LTG
George M.L. Robinson
Certiried Protessional Geologist
ELEVATION
COMPACTED EMBANKME
18" Ch
..____COMPETENT FOUNDAT_H
MATERIAL
36 "0 16 GAGE GALVANIZED CMP OR
36 "0 RCP OPEN AT TOP
d'
4 ROWS (MIN.) OF SLOTS IN IR
TOP PORTION OF RISER.
EACH SLOT 2" WIDE BY 6" LONG,
9 SLOTS PER ROW AT
APPROXIMATELY 12.5 "C -C SPACING.
A LINED OPEN- CHANNEL EMERGENCY SPILLWAY WAS CONSTRUCTED
TO PROVIDE A RESIDUAL FREEBOARD OF AT LEAST 1 FOOT DURING THE.
100 YEAR, 24 HOUR STORM EVENT. THE ALIGNMENT AND CONFIGURATION
OF THE EMERGENCY SPILLWAY WAS DETERMINED DURING FINAL DESIGN
AND AFTER THE FINAL DESIGN FIELD AND LABORATORY INVESTIGATIONS
WERE COMPLETED.
( 4 FOOT
'.P COLLARS
%X jVe1D
NOV 2 � 19E�
M1NE0 LAND VISIOi�I
Rt�� peMAT10N
NOTE,' PIPE WAS INSTALLED IN COMPETENT FOUNDATION
MATERIAL. DEPTH OF TRENCH WAS
DETERMINED IN THE FIELD.,
DRAINAGE AREA - 43.1 ACRES
010 (PEAK FLOW 10 YEAR 124 HR STORM) - 9.8 CUBIC FEET PER SECOND (cfs)
01OTot,(TOTAL FLOW 10 YEAR /24 HR STORM) - 0.72ACRE FEET (Ac/ft).
025- 18.2;ofa
025To1: - 1.38 Aa /ft
0100 -28.4cfv
O100Tot.- 1.9 Ac /ft
OUTLET PIPE SECTION
SCALE: NONE
SPILLWAY WIDTH - 10'
SPILLWAY GRADE -12%
SIDE SLOPES 2:1
0100- DEPTH OF FLOW= .67
V100 - 3.12fps
FROUDE NUMBER - .84
nec ❑T
SUN COAL COMPANY
MAP NO: 1
Illln IIIII IIIII )III Illu IIIII )III IIN