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_ a / goo 0 __ INDEX ® F DRAWINGS
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=� �. *� ` , ,, . 1. b Ni PITTSBORO PBOR-888-C-001 INDEX SHEET
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;: , r r - . p ° I \ CHATHAM PBOR-888—C-003 PROJECT SPECIFICATIONS
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A. `P. ��_ � : � Q° �� BUILDING 888 — SITE DRAWINGS F
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4 ' -� PBOR-888-C-2X3AOVERALL PLAN, AREA 3
`' fig: • PBOR-888-C-2X3B OVERALL PLAN, ALL AREAS OF IMPACT
s PBOR-888-C-6X1 MISC DETAILS BASIN 4
` )LI:i , p PBOR-888-C-6X2 MISC DETAILS BASIN 4
{ ,} _ \ PBOR-888-C-6X3 MISC DETAILS AND SECTIONS, STOCKPILE CHANNEL
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- AREA OF CONSTRUCTION T • �- PLOT P L�,. SCALE: 1 =750 EI ,� -
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NORTH ��06--�� L-�°
B _. -. APR 13 2021
PROJECT NAME: PBOR - SPPP PROJECT DRAWING NUMBERING SYSTEM LP.NDD ,,,,),.,,,rk.A.,,,,,,,,, ,,-_y__, B
ADDRESS:
PBOR-888-C-XXX
4191 HIGHWAY 87 SOUTH SHEET NUMBER ACCESS
CODES US081 US182 1 1 DESIGN REFERENCE NEXT ASSEMBLY
MONCURE, NORTH CAROLINA 27559 BUILDING NUMBER C - CML
•
M - MECHANICAL 2 4/6/21 ISSUED FOR MINING PERMIT M❑DIFICATI❑N TCC
3M CIVIL ENGINEER: S — STRUCTURAL TREVOR CRAWFORD, P.E. (3M) (651) 737-2766
1 2/5/21 ❑RIGINAL ISSUE - ISSUED FOR BID TCC TCC
PROJECT MANAGER: DANIEL DVORAK (651) 230-1563
E - ELECTRICAL REV PROJECT ID DATE DESCRIPTION DRWN CHKD
ONSLLTANT NAME/LOGO DRWN DATE MFG DATE
- TCC D /D5/21
CHKD DATE APPVD DATE
COPYRIGHT© 3M 20, 1
' ArTI JTTE' ENGINEERING 3M CENTER This document and the informa Ion itr contains ore
St. PAUL, 3M property and may .,,. a> r4 nrnrtu:e�' o
SCALE MN 55144 further distributed without 3M permission, or used
AS SHOWN or disclosed other than for 3M authorized
purposes. All rights reserved.
TITLE /�
REGISTRATIEIN,eirAtf; I.S. CERTIFICATI❑N INDEX SHEET �-j
`„•®P�FE S o��/��r
9 SPPP PROJECT
t�A.-4- S AL
l u 4 ; BLDG. NO.
�,��L•_ NGINEe:••gip; PITTSBORO 888 NORTH CAROLINA
0,9• • •__•• vh1 SIZE DRAWING NUMBER SHEET REV
--,, C• C?` %0 E ' PBOR - 888 — C - 001 1
6 5 4 3 2 n
1

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b i 5 4I 3
1 2 1
CONSTRUCTION NOTES AND GENERAL SPECIFICATIONS
RESPONSIBLE PARTIES:
C. Mix designs shall be based on Type I cement.
1. OWNER: This shall be the property OWNER. Currently 3M Company.
C. Hot Weather Conditions:
2. OPERATOR: This shall be the party responsible for day to day mining related operations of the quarry and reclamation stockpiles. 1 . All work shall adhere to ACI 305.
3. CONTRACTOR: This shall be the responsible P party hired by the OWNER for construction of the project herein. D. Cold Weather Conditions: µ GENERAL CONSTRUCTION NOTES: 1. When ambient temperature is 40 degrees Fahrenheit or less, the followingprecautions r
P g are to be adhered to:
1 . This plan set is submitted "For Bid". Prior to construction of the perimeter channels andponds, a. Refer to previously cited ACI 306 for minimum thickness of thermalprotection required.
H
affect the overall size, designed OWNER'S engineer will issue a "Construction Grade" plan and specification. Potential changes in the Construction Grade plan will not q
g performance, or function of the proposed stormwater infrastructure. C. Apply the following surface finish after surface sheen or excess
2. OPERATOR/CONTRACTOR shall field verify all information related to design including, but not limited to, existing site conditions, existing topography, existing stream and buffer locations, proposedmoisture has disappeared:
etc. Notify the OWNER/engineer with any discrepancies. development locations and elevations,
1 . Wood float or magnesium float finish.
3. Erosion and Sediment Control devices and practices shall be in-place prior to any land disturbing activities related to this project. OPERATOR/CONTRACTOR responsible forallerosion
phases of this project. and sediment control during construction of all
D. Curing methods shall consist of one of the following:
4. CONTRACTOR shall restore all disturbed areas outside of the proposed development area to existing conditions unless otherwise noted.
1 . Keep concrete surface continuously wet by ponding with water.
CONTRACTOR shall field verify locations of all potential utilities (above and below ground). OWNER will provide guidance as best as their ability; however, it shall be the CONTRACTOR'S sole res onsibil'ty to protect any existing utilities.
5.
6. OWNER will supply all riprap and/or aggregate materials.
2. Apply moistureproof fabric to entire area lapping joints and edges at least 3 inches. Tape interior joints and weight edges down with sand or other approved material.
p l
PROPERTY MEASUREMENTS: 3. Apply liquid membrane curing compound to the finished surface in a 2 coat continuous operation with second application applied transversely to the direction of the first application, and in accordance with the manufacturer's
directions. Replace damaged areas with equal applications of membrane using compound. Liquid membrane curing compound shall not be permitted where the surface will be subjected to an application of waterproof coatings,
The existing topography shown is from Chatham County GIS and historic 3M Pittsboro site data. bonding agents, treating oil or paint.
1.2. OWNER will provide updated aerial survey and "Construction Grade" plan prior to construction.
3. CONTRACTOR shall establish site control points (benchmarks) as needed by engaging survey services per a North Carolina licensed surveyor. SOILS:
G4. Site Datum and Project Drawings are in North Carolina State Plane NGVD 29, NAD 27. Several benchmarks are regularly used on-site for aerial surveys. Utilize existing control 1. Soils on the site consist of generally a range of clayey, rocky type soils to weak weathered rock.
points which are planned to be used, set additional control as needed. points for layout. Verify accuracy of existing control
5. CONTRACTOR shall provide all survey services required for project layout, either self-performing, or hiring of additional survey resources.
6. OWNER will provide layout in AutoCAD format for CONTRACTOR'S convenience. RECLAMATION PLANTINGS:
1. LIME - RATE OF APPLICATION (tons/acre):
C
a. Lime should be applied at a rate of 2 tons/acre for the establishment of grasses. However, these rates may vary upon the results of analysis samples that may be submitted to the North Carolina Department of Agriculture
ONTRACTOR GRADING WORK, limited to Perimeter Channels, Ponds, and related Infrastructure: vi
Pittsboro Extension Office). The soil analysis reports will P (via
} Y P provide recommendations for liming.
1. OWNER/OPERATOR is responsible for constructing general fill inside of the proposed perimeter channels. This section shall apply only to perimeter stormwater infrastructure. -2. FERTILIZERANALYSIS AND RATE OF APPLICATION (pounds/acre):
. However,nitrogen.for
2. Grading work related to perimeter channel and pond construction shall be within the acceptable tolerances listed below:
a. General fertilizer application rates for the site are 120 lbs/acre for phosphorus and 68 lbs/acre g these rates may vary upon the results of analysis of soil samples that may be submitted to the North
Horizontal Measure Vertical Measure Carolina Department of Agriculture (via the Pittsboro Extension Office). The soil analysis reports will provide recommendations for liming
. If a test is not used, the 1000 lbs/acre of 8-8-8 or 10-10-10 will be used.
Cut/Fill slopes (general grading): 1.0' 0.10' 3. SEEDING - TYPE(S) AND RATE(S) OF APPLICATION INCLUDING YEAR-ROUND SEEDING SCHEDULE (pounds/acre) (note: includes Legumes):
Ditch Bottom: 0.5' 0.10'
Cut/Fill in Roadbeds: 0.5' 0 5' Dates Species Rate, !bs acre
Cut/Fill at Structures: 0.0' 0.05'
/
Feb. 15 - April 1 Korean Lespedeza 10
F 3. Where appropriate, the grading tolerances as listed may be exceeded providing OWNER approval, and no drainage issues develop. Fescue 40
Re4. Soil selection and inspection may be done by a qualified 3rd party geotechnical consulting firm. Win top 10
5. All topsoil in the areas of construction as shown on Drawings shall be stripped. F
9 OWNER'S Designated Representative will determine the actual depth of topsoil to be stripped; however, in no case shall the depth of strippingbe Winter Rye (grain) 15
less than 6 inches. The topsoil shall be stockpiled for later use where shown on Drawings or where designated by OWNER'S Designated Representative. A+�r i! 1 -- 31 July Common Bermuda 50
6. Scarifying Filled Areas: After topsoil and unsatisfactory materials have been removed from the surface upon which the fill is to be placed, and if OWNER'S Designated Representative deems itAug, 1 - Oct. 25 Lespedeza (unscarified) 30
plowed or scarified to a depth of at least 4 inches or until the surface is free from ruts, hummocks, or other uneven features which would tend toprevent uniform P necessary, the surface shall then be
compaction by the equipment to be used. German Millet 40
a. Where the embankment is made on a hillside or slope, the ground upon which the fill is to be placed, shall be plowed or scarified deeply. Where the slope ratio of the ground is steeper than five
p to one (5:1) horizontal to Oct. 25 - Feb. 15 Rye (grain-temporary) 120
vertical, the bank shall be stepped or benched.
7. Compacting Filled Areas: After the area for the embankment has been cleared and plowed or scarified, it shall be disced or bladed until it is uniform and free from lar a clods, brought to the proper moisture content, and a. Where possible native warm
m season grasses such as Switch Grass, Indian Grass, Bluestem Grass, and Gamma Grass shall be used to stabilize disturbed areas. Seeding rates and planting dates will be discussed with the NC
compacted to a density equal to or greater than the density requirements for the proposed embankment as specified. g9
8. General excavation shall include all materials of every nature and description, encountered in obtaining lines and grades shown on Drawings. Wildlife Resources Commission to match the site conditions.
9. All suitable materials removed from the excavation, if any, shall be used as far as practicable in the formation of the embankment, shoulders, slopes and other areas stockpiledb. Additional plantings for Wildlife Enhancement:
10. CONTRACTOR shall, at their own expense, form all dams, construct temporary ditches, for reuse as designated by OWNER.
P ry provide pumps or do whatever other Work is necessaryduringthe i. KoreanVA-7 Shrub Lespedeza, 20 lb/acre
surface and perched water which accumulates in the excavation areas. P P progress of the Work to keep the excavation area clear of or to remove all
ii. Lespedeza, 20 lb,/ac
11. Disposal of unsuitable materials and excess rnaterk,is, rif any,] shcrff be as directed by OWNER'S Designated Representative.
iii. Partridge Pea, 15 lb/ac
E 13. All dewatering to achieve grades that may be necessary shall be by means and methods of the contractor.
c. Additional plantings are to be used on 25% of non-critical slope areas to provide food and additional habitat for wildlife. A professional wildlife biologist with the NC Wildlife
14. Fill materials: Fill materials shall consist of suitable and/or granular onsite or borrow materials free from organic matter and other deleterious substances. When more than one soil type is availablepost-project wildlife habitat, per the Land Qualitymine 9 Resources Commission shall be consulted to enhance
types exhibiting the better structural characteristics shall be used in embankment areas where some type of loading will be superimposed, whether under this Contract or in the future,yas shown on Drawings. Fill the type and
permit requirements. E
stones or fragmentary rock measured in their greatest dimension larger than the following sizes: shall not contain 4. MULCH - TYPE AND RATE OF APPLICATION (pounds/acre) AND METHOD OF ANCHORING:
a. For information supplied by the University of North Carolina Extension Service agent for Chatham County, typically mulching is not necessary if seeding is completed during the spring or fall seeding times. Otherwise, mulch can be
FILL LOCATION applied at a rate of 2,000 lbs/acre and anchored appropriately.
UPPER 24 INCHES OF FILL(INCHES) BELOW THE UPPER 24 INCHES OF FILL(INCHES)
Under building areas including 5.
1
future expansion as noted on Drawings: 6
Under
EROSION AND SEDIMENT CONTROL (E&SC):
roads, pavements, parking lots,
railroads, walks and storage yards: 4 1. Perimeter erosion and sediment control measures shall be installed prior to any site disturbing activities. These measures shall include silt fence, rock*12 dams, temporary diversions, etc. These shall be placed at the "construction
limits" delineation as noted on the project drawings. Field verify any other measures that should be taken in order to provent off-site sediment laden stormwater runoff.
disturbed area not contained
Under grassed areas: 6
*12 2. Perimeter E&SC measures shall be maintained by the CONTRACTOR until the perimeter channels are constructed AND then
by
channels Weis has reached 70% vegetated cover.
(*May be exceeded if approved in writing by OWNER.) 3. CONTRACTOR shall remove these measures when they are no longer needed.
15. Fill Construction:
4. All E&SC measures and devices shall meet North Carolina requirements. �'
N a. The selected fill material shall be placed in horizontal layers which, when loose, shall not exceed 8 inches. Each layer shall be spread evenly and shall be thoroughly blade mixed during5. Extra care shall be taken around all streams & buffers. No work h
Li material in each layer. Each layer shall be compacted to a density not less than the percentage of maximum dry density as specified. g Y the spreading to obtain uniformity of
shall be allowed within stream buffers unless noted.
D
b. Embankment construction shall start at the lowest plane and progress upward.
c. When the fill material includes stones, no large stones shall be allowed to nest and all voids must be carefully filled with small stones or earth and properly compacted.
d. If necessary, the material shall be brought to the
g proper moisture content as determined by the Soils Technician by either aerating the material if it is too wet and if weather conditions permit or spraying or sprinkling with water
if it is too dry. Each lift shall be mixed thoroughly if drying or wetting is required to insure uniform distribution of the moisture.
14. Seasonal Limits:
a. No frozen fill material shall be placed, spread or rolled in the embankment nor shall any fill material be placed on frozen ground or duringunfavorable
conditions, fill operations shall not be resumed until the Soils Technician indicates that the moisture content and densityof the weather conditions. When Work is interrupted by unfavorable weather
15. Compaction:
previously placed fill are as specified.
a. Compaction equipment shall be of a size and type permitting efficient compaction of the subgrade and/or base layer.
b. Compaction performed over or immediately adjacent to culverts, walls, columns, structures and miscellaneous foundations shall be accomplished by compactingwith hand tampers
c. Inspection and testing by OWNER'S Designated Representative and/or Soils Technician, or by hand-operated mechanical tampers.
/ hired and paid for by OWNER, will be conducted as required during soil compaction operations, to assure compliance with this Specification.
When tests indicate that the density of any layer or portion thereof is not within the requirements of this Specification, the particular layer or y portion shall be reworked until the required results have been obtained.
d. Minimum Densities (ASTM D1557 or AASHTO test T180 by Modified Proctor Method):
. ? Sub-grade in excavation (cut areas):
1 . Under structures: 95%
C2. Grassed Areas: Not Required
ii. Sub-grade in embankment (fill areas):
1. Fill under roads: 95%
2. Fill under structures: 95% - ''''1::'.'''' ' '-__.. , -;.-:F,
3. Fill under grassed areas: 85%
iii. Crushed Rock Base under structures: 95% ,_ ,,,e;',,r..
CONCRETE WORK
vi
.,y
A. Referenced Standards:
1. The current editions of the following American Concrete Institute(ACI) publications shall govern all Work
performed hereunder, unless otherwise specified:
a. Recommended Practice for Concrete Floor and Slab Construction - ACI 302.
b. Recommended Practice for Hot Weather Concreting - ACI 305.
REcEp ` .)
B c. Recommended Practice for Cold Weather Concreting - ACI 306.
APR 13 gin
LAr>iD QUALITY
d. Recommended Practice for Construction of Concrete Pavements and Concrete Bases - ACI 316.
B
e. Building Code Requirements for Reinforced Concrete - ACI 318. MINING pp r�rm B. Design Criteria:
1. CONTRACTOR shall employ an approved independent materials testinglaboratoryand pay for the service of setting up the design mixes and to analyze the fine and coarse aggregate for the various uses of concrete utilized on the
project. Design mixes shall be in accordance with the previously cited AC1 318 publication and in compliance with this Specification. The proposed mixes shall be submitted to OWNER forAccess
The approved mixes established by the laboratory shall be used in the Work as long as the characteristics of the ingredients approval prior to placing of anyconcrete. usosi usI82 �
CODES DESIGN REFERENCE NEXT ASSEMBLY
and submitted to OWNER for approval. g edients remain unchanged. If any significant change is made in the ingredients, new mixes shall be prepared
3 4/4/21 ISSUED FOR MINE PERMIT SUBMITTAL TCC)
of portland cement, aggregate, air entraining admixture, water and an air content2 2/18/21 ISSU
ED FOR BULLETIN TCC
concrete shall have a range of 2 to 4 inches. ranging from 5 to 7 percent. Slump of
1 2/5/21 ❑RIGINAL ISSUE - ISSUED FOR BID TCC
Concrete shall consist of a minimum 28 day compressive design strength of 4,000 psi using 6 bags
a. If any of the conditions vary from those as described, CONTRACTOR shall submit a revised mix design prepared by the testing laboratory along with a written request for the variance REV PROJECT ID DATE DESCRIPTI❑N DRWN CHKD
approval.
q desired to OWNER for their consideration and CONSULTANT NAME/LOGO
DRWN DATE MFG DATE
b. Concrete for portions of the structure required to be watertight, such as water storage and waste treatment tanks, shall be air-entrained and have a water-cement ratio not exceedingT KC DATE2/5 21
. CHKD DATE APPVD DATE
0.48
COPYRIGHT© 3M 20a1
ACILITIES ENGINEERING 3M CENTER
This document and the information it contains are
ST. PAUL, 31 aroper'y and may nct -tmr::rf::o r
further distributed without 3M permission, or used
SCALE MN 55144
AS SHOWN or disclosed other than for 3M authorized
purposes. All rights reserved.
TITLE A
REGISTRAT,113 WSTpMP IS. CERTIFICATI❑N
PROJECT ❑ TES.,.' CAo,',,,
�, •NitSR
0 " S°*..:4/ "'= PITTS3CR - SPPPR -
- JECT*
1 " S AL G _ \ERAL S ECIFICATICNS 442179 =
':,��-• '�'ciNE`��'�0, ` PITTSB❑R❑ 888 NORTH CAR❑LIN
O • • S� SIZE DRAWING NUMBER SHEET REV
6 "'',R,-�„„„,` �'' E PBCR - 888 - C - 003
5 4 1 I. a
3 2
1

8 7 6 5 4 3 8 1
6" FAIRCLOTH SKIMMER (OR EQUIVALENT), 6" L2x2x3/16" TRASH RACK
SKIMMER WITH 5.7" ORIFICE, & 2.8" ORIFICE 3/8"x6" CONT. P 6'-0" (L) 10" i" CHAMFER
RADIUS, SEE ADDITIONAL DETAILS W/ (2)-1/2"0 S.S EXP. (TIP•)
PVC VENT ANCH. AT THIRD PTS. 3/4n0 BAR
PIPE ® 6" O.C. (TIP.) TOP EL 441.00N , %
H FLOAT
1 \ H
DEPTH AT OVERFLOW \7 TOP EL. 439.50 \I ° ,,,,\. ----- \ 01111
ELEV 439.50 =
#4 BARS 0 TACK WELD N.
12" O.C. (TIP.)
E.W., E.F. -\ '
1111Q.1110
1 �� 1 N. , T/WATER 434.00
In illitip
o 14-64v *) ____ ________/-
FLEXIBLE HOSE , • • 4
• EXISTING 54" RCP WATER ENTRY UNIT
7•7, . \ WITH TRASH SCREEN
MAN1*
\ . Ina
IE.434.00 ,C\
i
------„,„„iAPPROX ELEV. 434.00 i ' PVC VENT PIPE
SCHEDULE 40 PVC PIPE I.E. 433.55 \. .6- , " __ i
(BARREL OR ARM) 6" (TIP.) ►I -s■ / a ■ ■■i!t■■■A i a
G rot 1 1 ..- _4 G EL. 433.05 _ - �
/ \‘.0).
_ ORIFICE OPENING INSIDE THE
_ KEYWAY (TIP.) i f;0/0i �' HORIZONTAL TUBE WITH A
ENIAL. II
NIP CONSTANT HYDRAULIC HEAD
if
0 C.BARS TdcB,®.W2 9" COMPACTED 0 / SCHEDULE 40 PVC PIPE
GRANULAR i 01.. / BARREL OR ARM)
DEMOLISH EXISTING HEADWALL, WATER ENTRY UNIT FLOAT ( )
NOTES. �.,/;`
CLEAR/REMOVE ANY TREES OR
1. ALUMINUM OR HOT DIPPED GALVANIZED BARS/PLATES MAYBE USED FOR TRASH \ VEGETATION THAT !S NECESSARY°
RACK - PRESERVE 54" RCP
lIl
2. ALL ALUMINUM SURFACES MOUNTED DIRECTLY TO CONCRETE MUST BE PAINTED , "`� EN ® VIEW FLEXIBLE HOSE
WITH A HEAVY COAT OF ALUMINUM PIGMENTED ALKALINE RESISTANT , ...„:
e
BITUMINOUSPAINT EQUAL TO MILITARY SPECIFICATION "MIL—P-6883". ` __,------
3.
ALL ANCHOR BOLTS SHALL. BE STAINLESS STEEL AS NOTED `, ,
DETAIL — OUTLET STRUCTUR E - ;
6X2 F1�2°=1°-o" -- ,
, \ vr,
, \
TOP VIEW
'; ra,)SKIMMER :DETAILS
a ,
_ C 1
1 LEGEND: 1 k sx4 .�.
NO SC E
i co -- EXISTING CONTOUR (1' INTERVALS) -�- ��� ,
EXISTING ACCESS ROAD OR TIE 2[ PROPOSED CONTOUR (1' INTERVALSq ----'—"-
IN ELEV, SEE GRADING PLAN - - 1 ,
f
VEGETATE SLOPES ; VEGETATE SLOPES
TOP OF BASIN \ / ACCESS AREA
u '' 4 _ ELEV.. ±441.00 /
I11 �T� II1 I� I� \I ' ; / �' TOE ELEV. 4 , 0 s PARTIAL PLAN OUTLET STRUCTURE1
- TOE OF BE'i'�-s !9 '=``-0'
'I " / ELEV. 436.40 /
111 i1=1i - /
11-111 /
/ flig % BOTTOM OF BENCHEE1 1 _1 ,—\i11II I I1 — I —I11 II_II ,. II5III_
EXISTING NATIVE III-III I11- 111 111-1111II-I1 I1, ,i___ II i
— ---
2
•
MATERIAL. 1 111- _ — 1 — — I — — I II - \II I H II \ 1 i
iI-III-III- II II I I I I I III I I III I I-1II V PERM. POOL -
ELEV. 434.00—, , -TT--I l i 1 T1f 1 1
APPROX 18' \ III
MAINT. ACCESS 1 I 1 1 .
\I /,
111---111- 1
iI. 11-111
11111-
r
11 I m=1111
ELEV. 429.50 .•
r II i i i ,I 1� _ilI III tI -1 IIIiII_ � -�: -
rs \ i I = " _- =i
2 POND SECTION — � WITH ACC
sx2 SCALE Fp l -
NO t
NOTE: "L" = THE DISTANCE SUCH THAT POINTS
"A" AND "B" ARE OF EQUAL ELEVATION. L
- SHALL BE AT A MAXIMUM 100'.
D EXISTING ACCESS ROAD OR TIE Alp, "L" = 100' MAXIMUM I D
IN ELEV. SEE GRADING PLAN FLOw� -eirt*:
- - _
i
J_ _ - • co, POINT "A" POINT' "E"
TOP OF BASIN ----1 1 f , ; _ _
r: . , , r �� , - VEGETATE SLOPES _ -I I (,I
4 .1.. _ _, ��-�.- � ,��.. ELEV. f441.00 ' - j
I_I11111 111=111 11I-111 11 111E111 .._. —1 1 \ �y
I !=1 I-1 I I III III III=1 I_II l i-(I I. ;I I-III-
111-1- -i i=III-1 I-1 I I_ I I I-1 I=1 I-I 11=I 1 i i fs .., �4
III III III1\= ,_2S '—� 1 1-- =I I �—
I��;;IIi Ii11IiE ROCK CHECK SPACING •—III\III I 1� BOTTOM of BENCH i
1—1 li I-1 =i ELEV. 434.00
--III=
'� —1 I l_-1 I I-1�- `
111_ 11 I
ROCK,
1 .Ii1-11i,
EXISTING NATIVE PERM. POOL D50=6'
i,,1 I 1 - ELEV. 434.00 6
MATERIAL III I��i- w � j
'1 =1!\ j;,.' �' z NOTE LOW POINT 6" LOWER THAN
FLOW \ ��0° IP �• m TOP OF CHECK DAM SHALL BE
I' % CREATED AS el,l OVERFLOW
1
k
1 - -� �; -:r NI
1 ELEV. 429.50 - 1
C '11=1T1,\1111-III-III\Ilflil!I
=111—I!1—i I — i
3 POND SECTION — WITHOUT ACCESS ROCK CHECK DAM DETAIL
6x2 NO SCALE
sx2 '
NO SCALE
1
455 I
j
45 = -
` / APPROX._ RECEIVED
EXISTING
GRADE APR 13 7011
B 445 —- —- -- — B
—
1
2 i ---- _._ e_____ _ __ ___!__ MINING PROC--
-- ®-" LAND QUALITY
44-0
ACCESS II
5Sb caDEq . . L
DESIGN REFERENCE NEXT ASSEMBLY
435 T/WATER _ - ! __-. _, �_
2 4/2/21 ISSUED FOR MINE PERMIT SUBMITTAL - REV 2 TCC
'\,,. —
, 1 2/5/21 ORIGINAL ISSUE - ISSUED FOR BID TCC
430 - -- POND BOTTOM 429.50 -
REV PROJECT ID DATE DESCRIPTION DRWN CHKD
ONSLLTANT NAME/LOGO DRWN DATE MFG DATE
T, CRAWFORD 2/5/21
425 I HKD DATE APPVD DATE
0 25 50 75 100 125 150 175 200 i
- COPYRIGHT© 3M 2020
" I �. s °� t p ACIL.ITIES ENGINEERING 3T CENTER mi 3,M pro ergs a dtmainnot#aeoenroducedd sr are
NORTH — EAST .-, ����� MI SF. ENT further distn uteri writho .'iw !ar^+�ta�eiu.�, .,: :�a:sc
pw
SCALE MN 55144 or disclosed other than for 3M authorized
A 4 OVERALL POND SECTION AS SHOWN purposes. All rights reserved.
TITLE /'�
REGISTRA ,�t3 o S'taAMQ I.S. CERTIFICATION f'!
6X2 1/8"=1'-0" I . ..`.'� CARo i,,, MISC . DETAILS
`'6Ck 'ESS1p C/ti "
F BASIN 4
• SEAL SPPP PROJECT
042179 i
a'. ,�J!f /,L( Q BLDG. NO.
�c``•.fi'Ng/ ��F 'OQ;` 'ITTSBORO 888 NC
LQ -g1N••' �� ` SIZE DRAWING NUMBER SHEET REV
R PBDR - 888 — C -6X2
8 7 6 5 4 3 2 1

8 7 6 4
3 2 1
—
G
G
A
,
F
F
ii
e
IT
r
455
STOCKPILE, ---FE 11114.1014 ,I. _. <0,..,6' .._ ,,-, di'-
iI
1 EXISTING GRADE
Y
440
r
F
SLOPE AREA WITH SUITABLE
CLAY AND VEGETATE — 7
435 + '
1111.4"7-
430
REMOVE ALL VEGETATION PRIOR
TO FILLING, INCLUDING STUMPS MSHA BERM
425 -
TIE SLOPING INTO k� / AI
COVER ANY
420 EXISTING LOWER DITCH — ►e �``; SLOPES IN
I \
6'
415 - 2�� /
SILT
�FENCE
410 — _ _AL _ /u.
C 400
•
C
3 SECTION C
6X3
1/8"=1.'-0" (PLOTTED ON 30"X42")
,
4
l'
430
I
425 — -- _
- 2.1 OR 1;1 SLOPE, RECEIVEra
SEE SECTION
APR 1
420
.1 ;� ?�
dolly* / EROSION RESISTANT CHANNEL (TYP.)
LAND CIIIAI.ITY
1 " •.:- (D) MINING P17 A. l
i' / ��,���l��I�' CHANNEL DEPTH r�^n
415 ? EXISTING GRADE �- __ _ - s _ _T -—
--\,,,,,,,
ACCESS
c(D?:-DC _ CODES —I
—I DESIGN REFERENCE NEXT ASSEMBLY
410 �� �` /- a \t- 3 z
:\ z3 ISSUED FOR BULLETIN TCC
/ —_., x x x x i 1 2/5/21 ❑RIGINAL. ISSUE — ISSUED FOR BID TCC
405 NATIVE SUBGRADE, NOTIFY
CHANNEL WIDTH (W) ENGINEER IF SUB—GRADE IS ANY REV PROJECT ID DATE DESCRIPTION DRWN CHKD
1 SEE PLAN VIEW SORT OF FILL OR FINES MATERIAL tONSLLTANTNAME/LOGO MFG DATE
NOTE: T. CRAWFClRD 2/5/21
400 SEE PLAN VIEW CHANNEL SCHEDULE FOR GEOTFTiLE FABRIC,___ i
CHKD DATE APPVD DATE
�-{ T _ -- "D , "W & "T" DESIGN INFORMATION. SUITABLE FOR DUTY
_ _ COPYRIGHT` 3 ! 2Oa1
ST CENTER 7,s do .)ment and the infcrnatian i ::s: ani.: ,-e
__-- TYPICAL CHANNEL S E C Tl , • AL,�L1 s iES ENGINEERING 3M property and rraay not reproduced or
395 '`- - -- 6X3 SCALE sT. PAuI, further distributed without 3M permission, or used
MN 55144 or disclosed other than for 3M authorized
NO SCALE AS SHOWN purposes. Ali rights reserved.
TITLE /�
REGISTRATION A P I.S. CERTIFICATION - f
>`.b`N jCARo
390
MISC , DETAILS
�' `, PLAN/PRUIPILE CHAN\ EL
4SECTION D -
SEAL SPPP PROJECT
6X3
BLDG. NO.
/ (PLO'1"!°I;U ON 3®"X42") �)4?, �Q PITTSBI�R ! 888 NC
- L� •.Cir�EL � SIZE DRAWING NUMBER SHEET REV
8 7
/',,;� C. CBPo' EP3ER - 888 ® C - 6X3_
5 4 3 2 1

8
6 5 4 3 2 1
FL,
4.5' - 5' MIN. LENGTH POST _
10'
WIRE MESH AT 6' MAX. SPACING PROVIDE FILL, FINAL GRADE EX{STING ROCKDAM, TO BE PARTIALLY REINFORCEMENT TO SLOPES INDICATED, AND
1.5' -_ , VEGETATE, SEE GRADING REMOVED FOR SUCCESSFUL VEGETATION
:_ • •';` :•; .;:•: ., : • , OF SLOPE AND VEGETATED SHELF.
H � � / �EOTEXTILE FABRIC PLAN. FILL WITH 12" LIFTS . . `:�. %°Y" • �'-`:: {:•�:`�'''' � � ' ':'' `-:=�� •
4.5' 8" j SUITABLE FOR DUTY) AND COMPACT TO 95% �FS ; '''" r. , • "«•�
� "':' •' • `= REMOVE TO 2' BELOW FINAL GRADE
= FABRIC ANCHORAGE - ~ � • 2'1
` '� • PROPOSED PERMANENT
1.5' w rn TRENCH. BACKFILL WITH y c •r;,
TAMPED NATURAL SOIL. ? ..a:•' •"'' .. ..... ...
18" CMP o w DIRECTION OF .` . ':!.;:: -.,,:}•M :`•:;4 ,•-.``:; ' �. [ POOL ELEV. 395.50
RUNOFF FLOW ••..:: ::•.4.:'•.::•::.f' 4 : •j: ,- r
:'•~; '. WATER,
:\\,\\,�\� ;: .;: APPROX ELEV. 97.00
' �'"'"�• � EXISTING
TYP. OF 2 0 12 O.C. " ;' ,:
( ) 6 MIN. ' •'•..: ' .: ''.
AN TI SEEP COLLAR ,.�_: .,..
DETAIL �, SILT z ;..~.� y.o
s WIRE MESH / M •.,;
7 z TO EXTEND / 6" FENCE // . . , ��..- . '';'.
J
6X4 NO SCALE 5 03INTO TRENCH - MIN. , / — — -
N Lv sn / -.
„- - - - - - - SIT -IILIII ,
-1 ' 1 ' -iI I I f I i \ 1..
IIIIIIIi � IIiIIt�i ill lii� � � i.
54" CMP EROSION CONTROL NOTES
NATIVE
G FLANGE CONNECTION /48" CMP 1. CONTRACTOR SHALL INSTALL EROSION CONTROL BARRIER AS SHOWN MATERIAL (TYP,) G
SEE DETAIL A ON DRAWINGS PRIOR TO ANY EXCAVATION ON THE SITE.
2. EROSION CONTROL BARRIER SHALL REMAIN UNTIL 80% COVERAGE g � VEGETATION HAS BEEN ESTABLISHED ON EFFECTED AREAS TO PREVENT
-- --� EROSION. SEE GRADING & DRAINAGE DRAWINGS, CONSTRUCTION NOTES BOTTOM APPROX
AND SPECIFICATIONS. [ ELEV 390.002" 3. SILT TRAPPED BY EROSION CONTROL BARRIER SHALL BE REMOVED
/
AS NECESSARY TO PREVENT MOVEMENT OF SILT INTO THE ADJACENT
j 1/4" BOLT AREAS.
HOLES PLAN VIEW
1.d DETAIL A ANTI-VORTEX COLLAR 4 SILT FENCE DETAIL — NORMAL DUTY
/ `� I 1 I I
& RISER CONNECTION 6X4
•
6 BRACKET DETAIL NO SCALE
6X4
NO SCALE RIPRAP TYPICAL EMBANKMENT SECTION
(-2-)
XANCHOR INTO SOIL, NP._ „ NO SCALE
F C-7 a) t
F
-GEOTEXTILE FABRIC, SUITABLE FOR DUN
SECTION B—B
•
2'
)...----------------------
RIPRAP
5" FAIRCLOTH SKIMMER (OR
WATER ENTRY UNIT 5" 4.5"
WITH TRASH SCREEN 1'i 54"� CMP UPPER ANT -VORTEX EQUIVALENT), SKIMMER WITH
Aill lb GRATING' ORIFICE, AND 2.2" ORIFICE RADIUS,
NM COLLAR, SEE BRACKET DETAIL
7 �f �� SEE ADDITIONAL DETAILS
PVC VENT PIPE , oa ��
FLARED ENDI C <
"7---
__ SECTION x
PVC VENT
/-401.00 48"0 CMP RISER PIPE
a �''� �R 'a I GEOTEXTILE FABRIC, SUITABLE FOR DUN 10' ' EMEIE'ID D IN
___ �-q SECrIC PROVIDE FILL, 17iNAL RAGE FLOAT
/ CONCRETE BASE
� ORIFICE OPENING INSIDE THE TO SLOPES INDICATED, AND 54" CMP
FLARED END DATA VEGETATE, SEE GRADING
-
HORIZONTAL TUBE WITH A PLAN. FILL WITH 12" LIFTS
E j� II111, CONSTANT HYDRAULIC HEAD DIA. I_ MATERIAL
_� ��_ AND COMPACT TO 9590 -- - - \ i E
18" ' RCP FLARED END SECTION �'T
24' 1 RCP ±398.00 MIN ~
(VARIES) ~-�_
SCHEDULE ~~ �~ -- 399.00 '+ ° DEPTH AT OVERFLOW
_1,1
DULE 40 PVC PIPE ��__ � = ELEV. 399.00
IV
WATER ENTRY UNIT FLOAT (BARREL OR ARM) B s __-
1 EXISTING E?OCKD.AM - �� ��7���� c�t•;
END VIEW J 2�_0» 1 Lr� 7-7 IE 395.00 ,_ ,i- `� �o o CONNECTION PER ;n=
FLEXIBLE HOSE 0
.-_.I _2] _, -, _`� CMP MANUF.�`,1,, \ •
\. '_ EXISTING WATER
.--- FLEXIBLE HOSE _ )� Cvv} RIPRAP OUTLET �/
C CII
= APPROX ELEV. 397.00
FLAf�ED END- I REINFORCEMENT, ,
A JJN /� � I I � I i I I 5
A SEE DETAIL
IE 396.50'-- 395.50-� �.��_._.__._
, _ •;7.- i!iI 1 2 MP 32 LF ` \ ��
'4
Q
7--Z OZ-- . 1 I I f I I >' N '�irik �.: T/PERM POLL.
J� ) _� �� }� co�}o`�c� �.. SCHEDULE 40 PVC PIPE APPROX ELEV. 395.50
TOP VIEW �C��< C_-_ ,,-_,e, � �-.'LQ- i I II , a (BARREL OR ARM)
CID° s.- .vacs .; 4A
�r � ,�; .�-jti �' )� o o RIPRAP, D 50=9"
D 8 ►J 1Vl�'�.[�� }C�/ ��� � i I I I NATIVE H A "
_..�-. 2'_0» 70c_J c_�, MATERIAL (TYPO 5 ► (OR 5 X5 ), 6 D
INSTALL ANTI-SEEP THICK CONCRETE W/
4 NO SCALE + • W DIMENSION AS PER 1 C� COLLARS 0 12' /
4 BARS 12" O.C. E.W.
MANUFACTURER. L J O.C., SEE DETAIL
• BOTH ENDS OF ALL 1-4.-1-1B
BOTTOM APPFOX
PIPES. PLAN6" THICK CRUSHED ROCK BASE ELEV 390.00
3 SECTION
6X4 NO SCALEI
NOTE: REVIEW FINAL LOCATION WITH ENGINEER
1I II
1 . OUTLET STRUCTURE SECTION
6X4 `° 0 SCALE
1
C
C
COMPACTED
/,-EMBANKMENT
FILL
SPILLWAY WIDTH (10') di
-/c_� ? • , 9" 2 : \ �
- CD -/_>_0,7 v0 Cam' ?
-)Of - i-cl -r-1-.\- -,_---k---- -/--,-1-C -41 Z--y-- ..-,--'4."
2 -- ;--11111-11E_=-2- ---j--<?(---H- 17-5C'117/---\(-72 i
---:
I i—I RE 72:EIVED
-
- 18 THICK Ci-- ---7(:::)UC::: :) ---
B 12" THICK, D5o=6" EMBANAcTED PII:RAP, D51? 9" G1rOTE T'i_F FABRIC AP 13 I
RIPRAP 0 TOP OF FILL LAND QUALITY B
SPILLWAY SURFACE. BREADTH (±10') SECTION MIN►�tG PROGRAM
TOP OF BASIN ELEV. = 401.00
— �.T ` _ EMERGENCY. 111111111E-7-----1—I—. DESIGN REFERENCE NEXT ASSEMBLY
on 7! U FT > ,�; - - «: ^;= - ,)o SPILLWAY ELEV. ® 399.50
-�1- 18" 3 4/5/21 ISSUED FOR MINE PERMIT M❑DIFICATI❑N TCC
��, _, " 2 2/18121 ISSUED FOR BULLETIN 1 TCC
�- ` FILTER FABRIC EXTENDED «�*� 1 2/5/21 ❑RIGINAL ISSUE - ISSUED FOR BID
THROUGH TOP OF 30"
SPILLWAY. �� �� _ ,� 2; " REV PROJECT ID DATE DESCRIPTI❑N DRWN CHKD
- , o-?g�c / 18 THICKI EXTEND FILTER FABRIC o o RIPRAP, DSQ=9" EXISTING GRADE., ❑NSLLTANT NAME/LOG❑ DRWN DATE MFG DATE
AND RIPRAP TO TOP OF L I I"I !II ;I �_ �c �` ``!li % EXTEND RIPRAP
SPILLWAY EMBANKMENT PER PLAN HKD DATE APPVD DATE
COMPACTED _ `-�_ `-y<>., 30"
EMBANKMENTS �. � � - - / coPYRtGHT© sM201>\_ TI TT
FILL • -`4 A`AT ATES ENGINEERING 3H CENTER This
document and the ir.�7-rmn rr tsfulfhu.:freloatzarei:nui7s
prr,�_ - �(-c C I� -- ST. PAUL, furtherdistrtbuted without�3Moe �SCALE MN 55144ordisclosed other than foreM iea'\ ��`J� � u osea. AtI rt htareser
C -i c AS SHOWN a e
PROFILE TITLE A
REGISTRATIq1) S�T I„ ,QMP I.S. CERTIFICATI❑N MISCELLANEOUS DETAILS
FILTER FABRIC
5 EMERGENCY SPILLWAY DETAIL ,,.,‘, VACAtia''•,,
6X4 o�•F�ssro-t�ti =
NO SCALE BASIN 5
� e�- �'
: 042179
AREA 4 SPPP PRUJET
BLDG, NO.
= Vitt( ITTSB❑R❑ 888 NORTH CAR❑LINA
Q� //`��
. L •..GIi�F`�••'- `. SIZE DRAWING NUMBER SHEET REV
,�°R C. .CP0`s'
8 7
,,,,•....•,,,. _ PBEIR - 888 - C - 6X4
- 6 5 4 3 2 1