NCG021039_Application_20240521

FORAG7E CX�EfNLY R8
NCG02 (J_ � �
pR0\ FRO MRO RRO WARD WIRO WSRO 'j"'�� v
�J Division of Energy, Mineral, and Land Resources Land Quality Sectionsr0"wa[erp���
National Pollutant Discharge Elimination System ai
NCG020000 Notice of Intent
This General Permit covers STORMWATER AND/OR WASTEWATER DISCHARGES associated with activities under
SIC(Standard Industrial Classification)Code 14[Mineral Mining Industry]except for:peat mining, coal mining,
metal mining, oil and gas extraction, tourist gem mines, NCDOT borrow pits, in-stream sand mining, and
discharges from mining operations which are intermixed on site with stormwater from concrete operations. you
can find information on the DEMLR Stormwater Program at deq.nc.gov/SW.
Directions: Print or type all entries on this application. Send the original,signed application with all required
items listed in Item (9) below to: NCDEMLR stormwater Program, 1612 MSC,Raleigh, NC 27699-1612. The
submission of this application does not guarantee coverage under the General Permit. Prior to coverage under
this General Permit a site inspection will be conducted.
1. Owner/Operator(to whom all permit correspondence will be mailed):
Name of leg I organizational entity: Legally responsible person as signed in Item (10)below:
usa A�Fa
Street address: City: State: Zip Code:
Telephone number: Email address:
jj z a'- C15/z-'.'
Type of Ownership:
Government
❑County ❑ Fedei
Non-government
I$Business(If ownersl rt must be included with this application)
❑ Individual
2. Industrial Facility (fac
Facility name: Facility environmental contact:
MIA-)A .1el,N �ill/cB
$itee addddres�s: R aye Cit ^ State: Zip Code:
1TJ CNl i. x 3�q t2oa l p(te f//N�t e Y777
Parcel Identification Number PIN) Cou ty_
/ l)ell
Telephone number: Email address:
26- - �979
Latitude of entrance: p LonV�,itude of entrance: o
� N �dZ• p793i� uJ
4-digit SIC code: Facility is: Date operation is tq begin or began-
,/ X New ❑ Proposed 4P zmZY — ti
�7y ❑ Existing
Types of minerals mined at this facility:
❑ Clay ❑ Feldspar Ore ❑ Lithium Ore ❑ Phosphate ❑/Soil ❑ Construction Sand 1-1Industrial Sand
❑ Other: Jto MIAiJof © VP_ 'g34Lf4 E Jay/
Page 1 of 11

Is this a processing-only facility for materials mined elsewhere? Is this an inactive mine site?
❑Yes ❑Yes
K No X No
Does total area of this mine site include ready-mixed concrete plant and/or asphalt plant areas?
❑Yes,and has separate NPDES stormwater permits(provide permit numbers):
❑Yes,and does not have separate NPDES stormwater permits
$I No
Does this facility already have a valid Mining Permit from DEMLR's Land Quality Section?
❑Yes(please provide the Mining Permit Number)
9 No(please indicate the status of the Mining Permit application) aAft A11 11
Are you applying for a discharge permit in the same location as a previously permitted mine?
❑Yes(please provide permit number and mine name)
® No
If the stormwater discharges to a municipal separate storm sewer system(MS4),name the operator of the MS4:
IN N/A
3. Consultant(if applicable):
Name of consultant: Consulting firm:
Street address: City: State Zip Code
Telephone number: Email address:
4. Development Activities and Buffers
Mining operation will precede development activities at this site:
❑Yes
N No
Mine is located within one of the 20 Coastal Counties,and will it add more than 10,000 ftz of impervious surface:
❑Yes(to both)
❑ No,this mine is within one of the 20 Coastal Counties,but will not at more than 10,000 ftZ of impervious surface
1K No,this mine is not within one of the 20 Coastal Counties
Mine is in the Neuse,Tar-Pamlico,or Catawba River Basins,OR in the Randleman or Jordan Water supply Watersheds?
❑Yes(specify size of stream buffers)
K No
Mine site will include wastewater discharges from a ready-mix concrete batch plant?
❑Yes(please seek additional coverage under General Permit NCG140000:Ready-Mix Concrete)
X No
S. Mine Dewatering
Mine dewatering will occur at this site:
❑Yes X No(mark N/A for the rest of this section)
Mine dewatering from this facility will be discharged to:
❑Surface Waters and/or Wetlands
❑Other(specify)
❑Mine will not discharge dewatering to Surface Waters and/or Wetlands;specify how dewatering will occur and where
water will be directed:
®N/A
Page 2 of 11

Wetlands and/or Surface Waters are within 4W of the mine pit perimeter: 404/401 Certification permits required:
❑Yes(specify distance) ❑Yes(briefly describe)
❑ No ❑ No
SI N/A ® N/A
Have you been required to obtain a wetland delineation certified by the US Army Corps of Engineers?
15 Yes(please attach to this application) ❑ No
6. Wastewater Treatment
Will this facility wash mined materials?
❑Yes p No
Will discharges of process wastewater treatment systems occur(including possible recycle system overflows)
❑Yes(please describe)
QS No
Will this facility employ chemical additives to flocculate suspended solids?
❑Yes(specify name/manufacturer/quantity of daily use)
® No
Note:please visit:https•//files nc gov/ncdeo/Water+Quality/Environmental+Sciences/ATU/PAM8 30 18 pdf for list of
approved PAMS
Will any of the wastewater treatment facilities at this mine overflow only during rainfall events that exceed the 10-yr,24-hr
rainfall event?
❑Yes(specify which systems)
A No
Are wastewater treatment facilities(including recycle systems) planned in the 100-year flood plain?
❑Yes K No
Wastewater Treatment Alternative Review as required by 15A NCAC 211-1.0105(c)(2)
Types of wastewater this mine site will discharge: ❑ Mine Dewatering ❑ Process Wastewater
Types of wastewater considered for this alternative review: ❑ Mine Dewatering ❑ Process Wastewater
Are there existing sewer lines within a one-mile radius?
1.Yes
❑Wastewater treatment plant will accept wastewater
❑ Is feasible to connect(explain)
X Is not feasible to connect(explain)
❑Wastewater treatment plant will not accept wastewater(please attach letter documenting this)
❑ No
Page 3 of 11

Are you already proposing a closed-loop recycle system (CLRS)that meets design requirements of 15A NCAC 2T.10000?
❑Yes,for dewatering
❑Yes,for process wastewater
❑Yes,for both
❑ No,this option is technologically feasible(explain)
❑ No,this option is not technologically feasible(explain)
❑ No,this option is otherwise feasible(explain) t
HI No,this option is otherwise not feasible(explain) ate it GO_w'w", SAT Oa2
KJNs`� wfRkAS KltiiC� {!yrll h� COM1r4lA�(ec) 'ln o�L �61W
What is the feasibility of building a CLRS compared to direct surface water discharge?
/*W
Surface or Subsurface Disposal System
❑ A surface or subsurface disposal system is technologically feasible(explain)
❑ A surface or subsurface disposal system is not technologically feasible(explain)
❑ A surface or subsurface disposal system is otherwise feasible to implement(explain)
19 A surface of subsurface disposal system is not otherwise feasible to implement(explain) --5p*ee ElVAAci li. q
✓ 10me -a F Rif
What is the feasibility of employing a subsurface of surface discharge as compared to a direct discharge to surface waters?
AAAdir
Direct Discharge to surface waters is the most environmentally sound alternative to all reasonably cost-effective options
for the wastewaters being considered?
❑Yes
® No 9 3 > iq �,� scv�/b� dN ,> Zorw1liaegrAgies
If this review included all wastewater discharge types,would excluding some types make any oft the above non-discharge
options feasible for some the wastewaters?
❑Yes
No
7. Outfalls(s)At least one outfall is required to be eligible for coverage.
3-4 digit identifier: Name of receiving water Classification: ❑This water is impaired.
I-f3o � �J tO[
Z 1D I�llX�P' t27 C.- ! ❑This watershed has a TMDL.
Discharge from this outfall is from:
K Stormwater ❑ Mine Dewatering ❑ Process Wastewater
7Q10 Flow of receiving waterbody(if dischar i*n Mine Dewaterin or Process ja_stJ water to waters classified as HOW,
ORW,Tr,WS-I,WS-II,WS-III,SA,or PNA): /O S mp n �.r y�'�i
Discharge occurs from this outfall:
® Only
eduring a rainfall event ❑ Intermittently(indicate how often) ❑ Continuously(indicate flow in CFS)
d 0. g41V I4 Al L&V yrt.07A outfall:
W
Brief description of th a irulystrial ti 'ties that drag to this outfa�a
.4✓ /J/ r
Do Vehicle Maintenance Activities occur in the drainage area of this outfall? ❑ Yes IN No
If yes,how many gallons of new motor oil are used each month when averaged over the calendar year?
3-4 digit identifier: Name of receiving water: Classification: ❑This water is impaired.
❑This watershed has a TMDL.
Page 4 of 11

Discharge from this outfall is from:
❑Stormwater ❑ Mine Dewatering ❑ Process Wastewater
7Q10 Flow of receiving waterbody(if discharging Mine Dewatering or Process Wastewater to waters classified as HQW,
ORW,Tr,WS-I,WS-II,WS-III,SA,or PNA):
Discharge occurs from this outfall:
❑Only during a rainfall event ❑ Intermittently(indicate how often) ❑ Continuously(indicate flow in CFS)
Latitude of outfall: Longitude of outfall:
Brief description of the industrial activities that drain to this outfall:
Do Vehicle Maintenance Activities occur in the drainage area of this outfall? ❑Yes ❑ No
If yes,how many gallons of new motor oil are used each month when averaged over the calendar year?
3-4 digit identifier: Name of receiving water: Classification: ❑This water is impaired.
❑This watershed has a TMDL.
Discharge from this outfall is from:
❑Stormwater ❑ Mine Dewatering ❑ Process Wastewater
7Q10 Flow of receiving waterbody,(if discharging Mine Dewatering or Process Wastewater to waters classified as HOW,
ORW,Tr,WS-I,WS-II,WS-III,SA,or PNA):
Discharge occurs from this outfall:
❑ Only during a rainfall event ❑ Intermittently(indicate how often) ❑ Continuously(indicate flow in CFS)
Latitude of outfall: Longitude of outfall:
Brief description of the industrial activities that drain to this outfall:
Do Vehicle Maintenance Activities occur in the drainage area of this outfall? ❑Yes ❑ No
If yes, how many gallons of new motor oil are used each month when averaged over the calendar year?
3-4 digit identifier: Name of receiving water: Classification: ❑This water is impaired.
❑This watershed has a TMDL.
Discharge from this outfall is from:
❑ Stormwater ❑ Mine Dewatering ❑ Process Wastewater
7Q30 Flow of receiving waterbody(if discharging Mine Dewatering or Process Wastewater to waters classified as HOW,
ORW,Tr,WS-I,WS-11,WS-III,SA,or PNA):
Discharge occurs from this outfall:
❑ Only during a rainfall event ❑ Intermittently(indicate how often) ❑ Continuously(indicate flow in CFS)
Latitude of outfall: Longitude of outfall:
Brief description of the industrial activities that drain to this outfall:
Do Vehicle Maintenance Activities occur in the drainage area of this outfall? ❑ Yes ❑ No
If yes,how many gallons of new motor oil are used each month when averaged over the calendar year?
3-4 digit identifier: Name of receiving water: Classification: ❑This water is impaired.
❑This watershed has a TMDL.
Discharge from this outfall is from:
❑Stormwater ❑ Mine Dewatering ❑Process Wastewater
7Q10 Flow of receiving waterbody(if discharging Mine Dewatering or Process Wastewater to waters classified as HOW,
ORW,Tr,WS-1,WS-II,WS-III,SA,or PNA):
Discharge occurs from this outfall:
Page 5 of 11

❑ Only during a rainfall event ❑ Intermittently(indicate how often) ❑ Continuously(indicate flow in CFS)
Latitude of outfall: Longitude of outfall:
Brief description of the industrial activities that drain to this outfall:
Do Vehicle Maintenance Activities occur in the drainage area of this outfall? []Yes ❑ No
If yes,how many gallons of new motor oil are used each month when averaged over the calendar year?
All outfalls must be listed and at least one outfall is required.Additional outfalls may be added in the section
"Additional Outfalls"found on the last page of this NOI.
8. Other Facility Conditions (check all that apply and explain accordingly):
❑This facility has other NPDES permits.If checked,list the permit numbers for all current NPDES permits:
❑This facility has Non-Discharge permits(e.g.recycle permit). If checked,list the permit numbers for all current Non-
Discharge permits:
la This facility uses best management practices or structural stormwater control measures. l;SW , L
If checked, briefly describe the practices/measures and show on site diagram: /r � J�lQiw S= �3/� Po�.ts
®This facility has a Stormwater Pollution Prevention Plan(SWPPP). i4kA64/ 1114
If checked, please list the date the SWPPP was implemented:
❑This facility stores hazardous waste in the 100-year floodplain.
If checked,describe how the area is protected from flooding:
❑Thisfacility is a(mark all that apply)
❑ Hazardous Waste Generation Facility
❑ Hazardous Waste Treatment Facility
❑ Hazardous Waste Storage Facility
❑ Hazardous Waste Disposal Facility
If checked,indicate:
Kilograms of waste generated each month: Type(s)of waste:
How material is stored: Where material is stored:
Number of waste shipments per year: Name of transport/disposal vendor:
Transport/disposal vendor EPA ID: Vendor address:
❑This facility is located on a Brownfield or Superfund site
If checked,briefly describe the site conditions:
❑ Facility provides appropriate secondary containment for bulk storage of liquid materials
If checked,briefly describe these measures:
❑ Site has an active landfill within the mining permit boundary
If checked, please indicate type:
a) ❑ LCID(Land clearing and Inert Debris)
b) ❑ other(specify)
Page 6 of 11

9. Required Items(Application will be returned unless all of the following items have been included):
® Check for$120 made payable to NCDEQ
® Copy of most recent Annual Report to the NC Secretary of State(if applicable)
I@ This completed application and any supporting documentation
�l Copy of the approved mining permit or indication of mining permit application status
Copy of US Army Corps—approved wetland delineation(if applicable)
* Line drawing of the water flow through the facility or block flow diagram
* Pictorial description of the nature of any sources of water and any collection and treatment measures
DO A site diagram showing,at a minimum,existing and proposed:
a) outline of drainage areas
b) surface waters
c) stormwater management structures
d) location of stormwater outfalls corresponding to the drainage areas
e) runoff conveyance features
f) areas where process materials are stored
g) impervious areas
h) site property lines
® 2 copies of large scale(24"x36"minimum)site plan showing:
a) topographical lines
b) all outfall locations
c) applicable buffers and delineated wetlands
d) receiving waters
e) 100-year flood plain(if applicable)
56 Copy of county map or USGS quad sheet with the location of the facility clearly marked
If mines site is in one of the 20 Coastal Counties(if applicable)
❑ Applicant has check with the appropriate regional office to verity the need for a Coastal State Stormwater permit.
a) Indicate the Regional Office Contact:
❑ Detailed list of:
a) impervious surface areas and percentages
b) sub-drainage areas
c) total drainage area
If mine is dewatering and near wetlands,or may otherwise impact surface waters or groundwater
❑ 2 copies of large scale(24"x36"minimum)plans delineating areas on the listing acreage including:
a) wetlands
b) ditches
c) well-placements
d) pits
e) borrow areas
f) overburden storage
g) stormwater controls/BMPs
h) vehicle maintenance areas
i) settling basins
j) product process(such as screening,stockpiles,and waste piles)
k) total drainage area
1) impervious surface percentages(if state Stormwater programs apply)
m) applicable buffers
n) access and/or haul roads
❑ Pump dewatermg size and information on its specifications
Page 7 of 11

❑ Well information(design,depths,maintenance)
fl Physical monitoring for the wetland areas
❑Settling pond size information,if applicable
❑ Level spreader design,if applicable
❑ Details about dewatering method
❑ Cone of influence calculations
❑ Description of measures to prevent erosion and flooding
❑ Description and information about 401/404 permits that have been obtained
❑ Copy of US Army Corps of Engineers wetlands delineations or approved wetland delineation(if applicable)
❑ 1 have contacted my local regional office about a Pumping Operation and Monitoring(POM)plan.
a) Regional Office Contact:
b) Date Contacted:
10.Applicant Certification:
North Carolina General Statute 143-215.68(i)provides that: Any person who knowingly makes any false statement,
representation,or certification in any application,record,report,plan,or other document filed or required to be maintained
under this Article or a rule implementing this Article...shall be guilty of a Class 2 misdemeanor which may include a fine not
to exceed ten thousand dollars($10,000).
Under penalty of law,I certify that:
1 am the person responsible for the permitted industrial activity,for satisfying the requirements of this permit,and for any
civil or criminal penalties incurred due to violations of this permit.
ISThe information submitted in this NOI is,to the best of my knowledge and belief,true,accurate,and complete based on
my inquiry of the person or persons who manage the system,or those persons directly responsible for gathering the
information.
® I will abide by all conditions of the NCG020000 permit.I understand that coverage under this permit will constitute the
permit requirements for the discharge(s)and is enforceable in the same manner as an individual permit.
* I hereby request coverage under
t_he NCG020000 General Permit.
Printed Name of Applicant: nd�ti� T�e�
Title: �C.�£ p 2, I
s/1317Y
(SignatUdre of Applicant) (Date Signed)
Mail the entire package to: DEMLR—Stormwater Program
Department of Environmental Quality
1612 Mail Service Center
Raleigh,NC 27699-1612
Page 8of11

BUSINESS CORPORATION ANNUAL REPORT
NAME OF BUSINESS CORPORATION: The Quartz Corp USA
0073741 ing Office Use only
SECRETARY OF STATE ID NUMBER: STATE OF FORMATION: NC E-Filed Annual Report
0073741
REPORT FOR THE FISCAL YEAR END: 12131/2022 CA202310706029
4/17/2023 11:00
SECTION A: REGISTERED AGENT'S INFORMATION 0 Changes
1. NAME OF REGISTERED AGENT: CT Corporation System
2.SIGNATURE OF THE NEW REGISTERED AGENT:
SIGNATURE CONSTITUTES CONSENT TO THE APPOINTMENT
3. REGISTERED AGENT OFFICE STREET ADDRESS&COUNTY 4.REGISTERED AGENT OFFICE MAILING ADDRESS
160 Mine Lake Ct Ste 200 160 Mine Lake Ct Ste 200
Raleigh, NC 27615-6417 Wake County Raleigh, NC 27615-6417
SECTION B: PRINCIPAL OFFICE INFORMATION
1.DESCRIPTION OF NATURE OF BUSINESS: Mining
2.PRINCIPAL OFFICE PHONE NUMBER: [phone] x 3.PRINCIPAL OFFICE EMAIL: Privacy Redaction
4.PRINCIPAL OFFICE STREET ADDRESS 5.PRINCIPAL OFFICE MAILING ADDRESS
8342 South 226 By-Pass P.O.Box 309
Spruce Pine,NC 28777 Spruce Pine,NC 28777
6.Select one of the following If applicable.(Optional see instructions)
❑ The company is a veteran-owned small business
❑ The company is a service-disabled veteran-owned small business
SECTION C:OFFICERS(Enter additional officers in Section E.)
NAME: Michael Yarborough NAME: ,Jae Ahn NAME: Jeffrey Curtis
TITLE: President TITLE: Vice President TITLE: Treasurer
ADDRESS: ADDRESS: ADDRESS:
--8342 South 226 By-Pass —8342 South 226 By-Pass 8342 South 226 By-Pass
Spruce Pine,NC 28777 Spruce Pine,NC 28777 Spruce Pine,NC 28777
SECTION D:CERTIFICATION OF ANNUAL REPORT. Section D must be completed in its entirety by a person/business
entity.
Reece 4/24/2023
SIGNATURE DATE
Form must be signed by an officer listed under Section C of this farm.
Scott Reece Secretary
Print or Type Name of Officer Print or Type Title of Officer
MAIL TO:Secretary of State, Business Registration Division,Post Office Box 29525.Raleigh,NC Z7626-0525

SECTION E: ADDITIONAL OFFICERS
NAME: Scott Reece NAME: NAME:
TITLE: Secretary TITLE: TITLE:
ADDRESS: ADDRESS: ADDRESS:
8342 South 226 By-Pass
Spruce Pine,NC 28777
NAME: NAME: NAME:
TITLE: TITLE: TITLE:
ADDRESS: ADDRESS: ADDRESS:
NAME: NAME: NAME:
TITLE: TITLE: TITLE:
ADDRESS: ADDRESS: ADDRESS:
NAME: NAME: NAME:
TITLE: TITLE: TITLE:
ADDRESS: ADDRESS: ADDRESS:
NAME: NAME: Name:
TITLE: TITLE: TITLE:
ADDRESS: ADDRESS: ADDRESS:
NAME: NAME: NAME:
TITLE: TITLE: TITLE:
ADDRESS: ADDRESS: ADDRESS:

ROY COOPER
Governor
-ELIZABETH S.-BISER
Secretary
WILLIAM E.TOBY VINSON,JR. NORTH CAROLINA
Interim Director Environmental Quality
November 15, 2023
Certified Mail
Return Receipt Requested
7022 0410 0003 1130 7700
John Silver
The Quartz Corp USA
PO Box 309
Spruce Pine,NC 28777
RE: Olerud Mine
Mitchell County
French Broad River Basin
Dear Mr. Silver:
We have reviewed the application your company submitted for the referenced mine site. In order for this office to
complete its review of the referenced project in accordance with N.C.G.S. §74-50 and§74-51 of the Mining Act of
1971,please provide the additional or revised information in accordance with the following comments:
1. Details map sheet show mining activities, however, there was no overall map showing the complete
project. Please provide an overview Mine map showing the complete permit boundary, buffers,
affected areas,etc.
2. Please clearly identify and label on the mine map all streams,wetlands,and waterways. The North Toe
River west of the property is not labeled.
3. Please clearly identify and label on the mine map the location of the 100-year flood plain limits.
4. Please clearly identify and label on the mine map the property lines and names of owners of record for
the adjoining landowners.
5. It is understood that there is no excavation at this proposed site,however,to evaluate potential physical
hazard of the fill activity,please clearly identify and label on the mine map the location of neighboring
dwellings,houses,public road, or public commercial or industrial buildings.
6. You've indicated that fuel tanks, solvent, or other chemical reagents will be stored on site. Please
describe the material, how they will be stored and method of containment in case of spills. Please
clearly identify and label on the mine map the location of all storage facilities.
7. Please complete the affected area table in the mine permit application.
8. Please clarify the type of material that will be placed on site. Please clarify if there will be processed
material or only stripping and overburden. Please provide the mine permit# for the location of the
source material.
D_E Q North Carolina Department of Environmental Quality I Division of Energy.Mineral and Land Resources
512 North Salisbury Street 11612 Mail Service Center I Raleigh,North Carolina 27699-1612
919.707.9200
�xncn=ou+a

Certified Mail
7022 0410 0003 1130 7700
Mr. Silver
Page 2 -
9. Question 11 on the mine permit application was left blank. However, the narrative and blasting plan
indicated that there could be potential blasting for road or infrastructure construction. Please complete
question 11 in the application.
10. Please provide proof, such as copy of the signed return receipts from certified mail, that all adjoining
landowners and chief administrative officer of each county and municipality have been properly
notified.
11. Please clarify the name, email, and phone for the contact on the application as well as the SWPP.
During a recent call to the permttee, it was discovered that the contact information provided in the
application is no longer valid.
12. Please clarify the name of the mine. The Duncan mine was referenced in the narrative,while the Olerud
mine was referenced in the application.
13. Please provide proof that you have submitted your NOI for your NPDES Stormwater permit.
14. Please provide a general timeline for each phase of the project including construction sequence,years,
etc.
15. Please provide proof you have submitted your 401/404 application for the stream and wetlands impacts.
16. Please provide proof of a preliminary jurisdictional determination from the USACE.
17. Please clarify construction details for diversion ditch ORPl-D13R_Route B and sediment basins
ORP12-BIR and ORP13-BIIR. These measures appear to extend into a wetland/stream complex.
18. The fill slope in the vicinity of diversion ditch ORPl-D13R_Route B appears to extend into a stream
in an area not depicted as a stream impact in the figures included in the 404/401 section of the mine
permit application. A minimum 25-foot buffer should be applied in this area.
19. DWR is aware that there are a number of pre-existing stream culverts on the property that may not be
subject to 404/401 permitting. However,there is no figure that depicts the location of these culverts.
There are a number of culverts depicted as part of the erosion control plans within streams in the vicinity
of ORPDEE-D1 and ORPDEE-C3. However,it's not clear whether these culverts are pre-existing.
20. Please see the enclosed comments from the US Fish and Wildlife Service. Please provide a biological
assessment and/or biological evaluation for the listed species as well as mitigation measures to mitigate
potential adverse impacts.
Please note, this office may request additional information, not included in this letter, as the mining application
review progresses. Be advised that our review cannot be completed unfit all of the items listed above have been
fully addressed.
In order to complete the processing of your application,please forward two(2)copies of the requested information
to my attention at the following address:
Division of Energy,Mineral and Land Resources
Department of Environmental Quality
1612 Mail Service Center
Raleigh,NC 27699-1612
If hand delivering or delivering by shipping company(e.g.,FedEx,UPS),please deliver to our physical address:

Certified Mail
7022 0410 0003 1130 7700
Mr. Silver
Page 3
Division of Energy,Mineral, and Land Resources
Department of Environmental Quality
512 N. Salisbury Street, 5th Floor
Raleigh,NC 27604
As required by 15A NCAC 513.0113,you are hereby advised that you have 180 days from the date of your receipt
of this letter to submit all of the requested information. If you are unable to meet this deadline and wish to request
additional time,you must submit information,in writing,to the Director clearly indicating why the deadline cannot
be met and request that an extension of time be granted. If an extension of time is not granted, a decision will be
made to grant or deny the mining permit based upon the information currently in the Departments files at the end
of the 180-day period.
Though the preceding statement cites the maximum time limit for your response,we encourage you to provide the
additional information requested by this letter as soon as possible. Your prompt response will help us to complete
processing your application sooner.
Please contact me at(919) 707-9220 if you have any questions.
Sincerely,,
1-7
Adam Parr,PE
State Mining Engineer
Enclosures: USFWS Letter
cc: Ms. Shawna Riddle

7wETLANDSi
& WATERS
August 30,2023
To: Todd Mickleborough
From: Chris Huysman
RE: Army Corps and DWR Wetland and Stream Permitting
Section 404 and 401
The purpose of this memo is to summarize the pre-application teleconference on August 22, 2023 for
the Section 404 and 401 permit to impact wetlands and streams on the Olerud Site located in Spruce
Pine.
Attending the call-
Amanda Jones, US Army Corps of Engineers
Sue Homewood,NC DWR
Joey Winston, NC DWR
Drew Lucas,W&W
Perry Isner, W&W
Chris Huysman,W&W
Documents shared in advance of the call-(attached)
30 day Prefile
Olerud Resource Maps
Olerud Wetland Base Map
Olerud Mine Drawings
The meeting opened with a review of the project location and a review of the site conditions based on
the Resource Maps. In particular,the discussions related to prior land uses on the site that diminished
the ecological and water resources values.
The Wetland Base Maps were utilized to show the approximate impact areas based on the Mine
Drawings. Discussions focused on the haul roads that are necessary to access high ground and the
wetland stream impacts that are necessary to "stack"the overburden in a safe manner. The agencies
were receptive to locating proposed haul roads at locations where crossings already exist; particularly
at the entrance to the site. The agencies wanted supporting documentation for the fills associated
with overburden wasting in impact areas S1,W1,and W2.
The Mine Drawings included cross-sections that support the impacts associated with the overburden
wasting areas. However, more narrative and figures will be needed to clarify our position that the
areas need to be impacted to have a viable project. We can generate lost volume and economic
implications for these impacts. The agencies concurred that the plans that will be submitted for the
WETLANDS Be WATERS,INC.

mine application have avoided and minimized impacts based on earlier drawings that showed all of the
valleys being filled as waste areas.
The Corps is prepared for us to submit a permit application between the middle and end of September
2023.
The State has recommended that we engage with the NC Wildlife Resource Commission before the
application is submitted.
The application will likely be the catalyst for an on-site meeting to review the plan.
CHRISTOPHER HUYSMAN HUYSMAN&BANDY,INC. TAMP BANDY
170 DEW DROP ROAD 4108 LB PROPST DRIVE
SPARTA,NC 28675 CONOVER,NC 28613
336.406.0906 828.302.3437
_____ [e-mail] [e-mail]

r
1:
i i Cnao�iNt
DWR Pre-Filing Meeting Request Form
nnmvnmalpualrp
Contact Name Meagan Jolly
Contact Email Address [e-mail]
Project Owner* The Quartz Corp USA
Project Name* Olerud
Project County* Mitchell
Owner Address:* S1,,A nddi�,
P.O. Box 309
Add,Ele t i,e 2
f]1u State/Ra elRejan
Spruce Pine NO
rbsrA ,.;1x� C-nbry
28777 USA
Is this a transportation project?* r Yes r No
Type(s)of approval sought from the DWR:
r 401 Water Quality Certification- r 401 Water Quality Certification-
Regular Express
* Individual Permit r Modification
r Shoreline Stabilization
Does this project have an existing project ID#?
C Yes r No
Do you know the name of the staff member you would like to request a meeting with?
Please give a brief project description below.*
Creation of mining disposal area to facilitate the company's continued
mining operations for high-purity quartz.
Please give a couple of dates you are available for a meeting.
12/7/2020
12/9/2020
12/10/2020
12/11/2020
Please attach the documentation you would like to have the meeting about.
4 ra,

By digitally signing below, I certify that I have read and understood that per the Federal Clean Water Act Section
401 Certification Rule the following statements;_
• This form completes the requirement of the Pre-Filing Meeting Request in the Clean Water Act Section 401 Certification
Rule.
• I understand by signing this form that I cannot submit my application until 30 calendar days after this pre-filing
meeting request.
• I also understand that DWR is not required to respond or grant the meeting request.
Your project's thirty-day clock started upon receipt of this application. You will receive notification regarding meeting location
and time if a meeting is necessary. You will receive notification when the thirty-day clock has expired,and you can submit an
application. }
Signature*
Submittal Date 11/11/2020 \

Ledger
Normanville
19E
14E
y
Wing J
226
h
}
J5
Penland Kalmia
Minpro 9E
1
Spruce Pine
19E
E Estatoe
226
0 3,000 6.000 12.000 Feet
I I I I I I I I I Grassy Creek
State of North Cardma DOT Esn.HERE.Germin S.f.G.o G.TechWooles inc METIINASA❑SGS.EPA.NPS USDA N
Project Name: Olerud N
�WETInHOs Owner/Developer. The Ouartz Coro W+E
6 n WnT ERS. Ive City/County: Spruce PlnelMitchell
Site Vicinity Tax PIN(s): 0880-12-95�9898 Acreage: 114 S
Coordinates: Let: 35.92571WN Lang: 82.0734490"W Date: 05-30-2023

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ProjectName: Olerud
• Developer:

m �
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W-W,�ITERS. INC.

Soil Map—Mitchell County,North Carolina
(Review Area)
s» +pam aalrm wasoo aoAm <rcom emwo roam aomr ammo eum avno mmo emen aomo ao1oD
ss Warn g@ ( )I m ssasn
4.
s Map Unit Legend
pg� Map Unit symboi NaP unk Name Acres in A01 Percent of A01
BmA
# w
Bdmwre sand,0l0 3 percent i OA' 0.1
e slopes,frequently flooded
II 1
CeE IChandler-Mieaville complex - -- 4.2 3.7%
3D W 50 percRM slopes,
crony
t ----- ---- —
� SnB 'Saunook sift bam.2 to 1.31 1.1
percent slopes
�$cC Saunook sl0 loam,8to 15 7:5 67%
percent slopes,a"
SdD Samook-Thunder complex 15 6.9 6.1%
to 30 percent slopes,alorry
s ssrvn 'a Ud Udonhents,loamy 4.0 3.6%
norm edam edam worm a®m a®oo aorm aa¢n a®o aom
s Un I UdoMents,loamy,story 31.6 26.0%
ry Map S¢l 1:7AMfpilai mA4»Cpn(11'x&5751eG w9c — Watauga sandy loam,8 to 15 12.6 11.2%
6 N Maaz percent slopes,stony,
0 10 XG 40() O�B
A as W9D Watauga sandy loam,15 to 30 32.6 28.9%
0 3s l00 fa00 21m percent slops&a"
Ms peRdpn:Nkb M00• Cmre'ownia6s:wG584 Edged.; RAZY VNVKa591 —
WgE Watauga sandy loam,30 to 50 12.1 10.7%,
percent slopes,story
Totals for Aral of Inbred 112.9 100.0%
Project Name: Olerud
Owner/ Developer: The Quartz Corp
WETuallos city/county: Spruce Pine/Mitchell
—L Y& WATERS, INC. Tax PIN(s): 0880-12-95-9898
Coordinates: Scale: Date:
Figure 4: NRCS Soil Survey Lat: 35.925719 Long: -82.073449 graphic OS 30.2023

COE
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0 500 1.000 2,000 Feet
"' n Gle of Diet n USDS. usC « gx�re Rd �TRr SWEEP oro,i NC f -
Protect Name-. Olerud N
WETLANDS Owner i Developer: The Quartz Corp W E
1 —L 6 WATERS. INC.
City i County: Spruce Pine/Mitchell
Tax PIN(s): A 0860-12-95-9898 re 114 S
Figure 4k NRCS Paper Soil Survey
Coordinates: Laf. 35.9257196"N Long: 7
62.0734490`W Date: 05-30-2023

A
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40, Legend
USA Wetlands
Marine
m . y Estuarine
Riverine
Lacustrine
linpro
y
r ... •• ,
:'�> •� / dt� � ' �~e � Air
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4fiT ,. .T •. , ,�.. r r 'fir
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The Quartz Corp
W.ww.'TERS. INC
• •-
1 .•1- •, 1 1 1

a F p> LegendRL
14 x ,} q
USA Flood Hazard
Areas
"1� yyot R.
I%Annual Chance
Flood Hazard
• x
t.. e
r
1 '. Annual Chance
Flood Hazard
linpro, ��.. - ,� if t r ""� Wi w Special
Floodway
Future Conditions
Flood
lip •t-ems w -
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'Wetland Sketch provided for illustrative purposes for preliminary
planning use only. Not intended to be relied upon for exact Legend
f{ location,dimensions,or orientation. All findings and assessments
... made by wetland consultants regarding limits of jurisdiction or
permitting requirements are subject to verification by the US Army
Corps of Engineers and other appropriate state and local r Review Area
authorities. ; Wetlands
'GPS approximations only,NOT surveyed v, Excavated Pit
- --- Perennial Tributary
0 500 1,000 2,000 Feet
I I I I
ONM04.NSG9,H aN,NAk C AN�I..,N I., meemp aN l,eGS uur e==A, .E&1CmnwRy Mope WAbtlda,SMedNaEiGFAie Wi.lmrcsue TSG *CaenM, ap.MM.r ,EM.NEP GmW,.59[G ,GORN21gIei.iK METNi0.50.Y M.EC W5,NCemw Mlrypp
Project Name: E Olerud N
TLANDS Owner/Developer:Mn The Quartz Corp W+E
Fww-ATCR Se INC. City/County: Spruce Pine/Mitchell
Figure is Approximate Delineation of Tax PIN(st: 0880-12-95-9898 Acreage:114 S
Surface Waters and Wetlands Coordinates: Lat: 35.9257196°N Long: -82.0734490'W Date: 08-21-2023

i
�n m..y:.s••Ya a...,r�..-...r -. mpact'.N2
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npa�i , -
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y`
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*Weiland Sketch provided for illustrative purposes for preliminary
"a ! planning use only. Not intended to be relied upon for exact Legend
lj location,dimensions,or orientation. All findings and assessments
} _ made by wetland consultants regarding limits ofjurisdiction or 0 aad cm
permitting requirements are subject to verification by the US Army Approximate Impact
Corps of Engineers and other appropriate state and local Awe
authorities. Approximate Tributary
Impacts
1- •GPS approximations only,NOT surveyed 'weua'ms
•y„ E.titecl Pe
,( —••Perenniat Tributary
1
0 500 1,000 2.000 Feet
Sva Fsn,zmSVS.VSCS.x wSA WIN. s'n QASM IFN.CaWaGCN+aa�M KWWtl.raF ��mW NYefAua�taxMtrEN(umwb��Y•W^K+Ms mLa,cUa Wrimxxe5T5GiS.00RKmeeWV.EbovA.Evt K1E.C+„E,.SYeC�MIGmTNKEga.K.uE1X0. V5E.5.EK x3.U5Cmin&rcew v.W
Project Name: Olerud N
WETLAN IDS Owner/Developer. The Quartz Corp W�E
WATER9, INC.'Awf- Cfty/Crun : Spruce Pine/Mitchell
Figure 1:Approximate Delineation of Tax PIN(s): G880-12-95-9898 Acreage:114 S
Surface Waters and Wetlands Coordinates: Lat: 35.9257196-N Long: -82.0734490'W Date: 08-21-2023

F
Impact
-0.07 ac r t
'r ��Impact Wi
- lull
Im S2 ....-
-40 LF --------
Impact W3
c -
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n e
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Impact St �I
' l
185 LF ��` t .wrxgr_ _ u,.. — -
p ,
i t
4 ,
n "Wetland Sketch provided for illustrative purposes for preliminary
planning use only. Not intended to be relied upon for exact Legend
lyl, location,dimensions,or orientation. All findings and assessments
t ,,^ made by wetland consultants regarding limits of jurisdiction or Ip naomaArea
�� lY permitting requirements are subject to verification by the US Army Approximate Impact
Corps of Engineers and other appropriate slate and local Areas
authorities. Approximate Tributary
Impacts
`GPS approximations only,NOT surveyed r,�- Wetlands
\� Excavated Pit
Perennial Tributary
/
- -
/ 'r 0 500 1,000 2,000 Feet
,;lr
.SmrtK.EUINLU P4.IBG4.NG N.CCt,a, CeWax¢.n,Nil4w'+IaaWt.G4i,.41,1W&..Ma me Go uurmmrtunM.Wumes'r.irx9Game rW.AWAU9'S.aCpn5lRHNy Nmlplas.mq,4 e,sWw<mM�nW
Project Name: Olerud N
We:TTnnos Owner/Developer: The Quartz Corp W�E
Wnreas, Inc. City/County: Spruce Pine/Mitchell
Site Overlay Tax PIN(s): 0880-12-95-9898 Acreage:114 S
Coordinates: Let: 35.9257196'N Long: -82.073449o`W Date: 08-21-2023

0-Branch Ro
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...oe.o
a `' _ .. _ — SSn Uedbw.EeJtWler
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US Army Corps of Engineers/NC Division of Water Resources
Wetland Impact Table
August 22,2023 "` �°"•"
1 ' Rw.:.+ew ".,`� • canes
nm _..i..._.. -
- n —
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ulf�o�Mn Rood
C011is R' J
a�n ons l^ )v J
a
9
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See sheets 3 of 9
through 8 of 9 for cross
sections of the disposal 0
`� � , areas.

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LEG END FOR CROSS SECTIONS
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8

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LEGEND FOR CROSS SECTIONS
PMs Surtue 31
IPbtw$ur`J�u 30
— Prue Slrtue t5
Mau Sv�rMelP
- PNUSryrtaaS
- PWne SgrHul
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LEGEND FOR CROSS SEcnONS
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PSux SurfuttI
- PLaee SurneeI
IN.S..x
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MEND FOR CROSS f ECTIONS
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17
Cl
_ Ornsite Avoidance and Minimization.
The applicant has avoidetl t site impacts to ap cation. Th st acres of
wst ands and 3001inear feel of streams at this location. the stream and
!I wetlantl impact would allow for Mx disposal of up to 850.000 tons of
waste rock,or 7 years of capacity,in the area shown in orange.
I s�
K r E i

Practice Standards and Specifications
6.40
3.
Definition A non-erosive outlet for concentrated runoff constructed to disperse flow
uniformly across a slope.
Purpose To convert concentrated flow to sheet flow and release it uniformly over a sta-
bilized area.
Conditions Where Where sediment-free storm runoff can be released in sheet flow down a stabi-
P.ractice Applies lized slope without causing erosion.
Where a level lip can be constructed without filling.
Where the area below the spreader lip is uniform with the slope of 10%or less
and is stable for anticipated flow conditions,preferably well-vegetated.
Where the runoff water will not re-concentrate after release.
Where there will be no traffic over the spreader.
Planning The level spreader is a relatively low-cost structure to release small volumes of
Considerations concentrated flow where site conditions are suitable(Figure 6.40a).The outlet
area must be uniform and well-vegetated with slopes of 10%or less.Particular
s> r care must be taken to construct the outlet lip completely level in a stable,undis-
turbed soil.Any depressions in the lip will concentrate the flow,resulting in
erosion.Evaluate the outlet system to be sure that flow does not concentrate
below the outlet(Figure 6.40b).The level spreader is most often used as an out-
let for temporary or permanent diversions and diversion dikes.Runoff water
containing high sediment loads must be treated in a sediment trapping device
before release in a level spreader.
Design Criteria Capacity—Determine the capacity of the spreader by estimating peak flow
from the 10-yr storm.Restrict the drainage area so that maximum flows into the
spreader will not exceed 30 cfs.
Spreader dimensions—When water enters the spreader from one end,as from
a diversion,select the appropriate length,width,and depth of the spreader from
Table 6.40a.
Construct a 20-ft transition section in the diversion channel so the width of the
diversion will smoothly meet the width of the spreader to ensure uniform
outflow.
Table 6.40a
Minimum Dimensions for Design Flow Entrance Width Depth End Width Length
Level Spreader cfs ---minimum dimension in feet----
0-10 10 0.5 3 10
10-20 16 0.6 3 20
� '- 20-30 24 0.7 3 30
6.40.1

Level Spreader(not to scale)
Vegetated ti` 4 �:aa `. ;:.,s,.•,.,..,..
\' ":'C a. .", Transition
diversion F X44e x,Y� , ,.,, to 0 grade
d �—� I'•
n�F•"�il�/u�n �' o �\w• dig
m.y v 4, ^� b�•
y1, an b, aln 31 .1r•
hh 1 4 \ a,..
rw•4,.:-,�..,�:�a , �,. ,Ja"• <�
4a, a{t•x„ t•r ,vu,�•+ slope
Stabilized
Stable `I ai. aYi, �'w11.P1 �,. a4• \'n.l, yV \� \ 11° do �'�
undisturbed ��:: �� d.�"�„ �' hi,l4 4. �•� �A`, �, �, :;' �,,,•
outlet .�I" _ 1. wU, .d 6, J. U,..u. pl. / �� " \.S •u°' ]a J ,1�
- 4r.ltn 4t, .4 u.1 .f,.w �,. n•1 qi.."ql.�' y,r,' y,n!,. k• .,ln 1, Jli. ..L.. ; .�� Ulu / li., v
°' ttl.. ,J.i, a..• ,IMP ..i( 't!. .11 lit. lt,wl"
•+� li.�'w M' \^, ALA M,,. td
Figure 6.40a Level spreader is designed to disperse small volumes of concentrated flow across stable slopes.
Ir1
Grade—The grade of the last 20 feet of the diversion channel should provide
a,smooth transition from channel grade to level at the spreader.The grade of the
spreader should be 0%.
Spreader lip—Construct the level lip on undisturbed soil to uniform height and
zero grade over the length of the spreader.Protect it with an erosion-resistant
material,such as fiberglass matting,to prevent erosion and allow vegetation to
become established.
Outlet area—The outlet disposal area must be generally smooth and
well-vegetated with a maximum slope of 10%.
Vegetate all disturbed areas.
Construction 1. The matting should be a minimum of 4 ft wide extending 6 inches over the
Specifications— lip and buried 6 inches deep in a vertical trench on the lower edge.The upper
edge should butt against smoothly cut sod and be securely held in place with
closely spaced heavy duty wire staples at least 12 inches long.
2. Ensure that the spreader lip is level for uniform spreading of storm runoff.
3. Construct the level spreader on undisturbed soil(not on fill).
4. Construct a 20-ft transition section from the diversion channel to blend
smoothly to the width and depth of the spreader.
6.40.2

Practice Standards and Specifications
n
Cross Section
Material E Variable
stapled in
place - ------ _�
6 --
- min
s!�Ifl _11�-111F Illl=11 I Illl=lli' '
Level
rea of spreader�Iillllll=(1111= �Ifl _�III�fIIt=JII= i '
U11�(11�1111==1►' 1, -11111 — L I �111-=
Buried =11f1r llf 1-1111
6,, min
Figure 6.40b Detail of level spreader cross secfion. -
5. Disperse runoff from the spreader across a properly stabilized slope not to
exceed 10%.Make sure the slope is sufficiently smooth to keep flow from con-
centrating.
6. Immediately after its construction,appropriately seed and mulch the entire
disturbed area of the spreader.
Maintenance Inspect level spreaders after every rainfall until vegetation is established,and
promptly make needed repairs.After the area has been stabilized,make peri-
odic inspections and keep vegetation in a healthy,vigorous condition.
References Surface Stabilization
6.10,Temporary Seeding
6.11,Permanent Seeding
Runoff Control Measures
6.20,Temporary Diversions
6.21,Permanent Diversions
6A0.3

Practice Standards and Specifications
6.64 SKIMMER SEDIMENT BASIN
Definition An earthen embankment suitably located to capture runoff,with a trapezoidal
spillway lined with an impermeable geotextue or laminated plastic membrane,
and equipped with a floating skimmer for dewatering.
Purpose Sediment basins are designed to provide an area for runoff to pool and settle
out a'portion of the sediment carried down gradient. Past designs used a
perforated riser for dewatering,which allowed water to leave the basin from
all depths. One way to improve the sediment capture rate is to have an outlet
which dewaters the basin from the top of the water column where the water
is cleanest. A skimmer is probably the most common method to dewater a
sediment basin from the surface. The basic concept is that the skimmer does
not dewater the basin as fast as runoff enters it,but instead allows the basin
to fill and then slowly drain over hours or days. This process has two effects.
First,the sediment in the runoff has more time to settle out prior to discharge.
Second,a pool of water forms early in a storm event and this further increases
sedimentation rates in the basin. Many of the storms will produce more
volume than the typical sediment basin capacity and flow rates in excess of
the skimmer capability;resulting inflow over the emergency spillway. This
water is also coming from the top of the water column and has thereby been
"treated"to remove sediment as much as possible. (Adapted from SoilFacts
Dewatering Sediment Basins Using Surface Outlets. N. C. State University,
Soil Science Department.)
i
Conditions Where Skimmer sediment basins are needed where drainage areas are too large
for temporary sediment traps. Do not locate the skimmer sediment basin in
Practice Applies
intermittent or perennial streams.
Planning Select locations for skimmer basins during initial site evaluation. Install
skimmer sediment basins before any site grading takes place within the
Considerations drainage area.
Select skimmer sediment basin sites to capture sediment from all areas that are
not treated adequately by other sediment control measures. Always consider
access for cleanout and disposal of the trapped sediment. Locations where
a pond can be formed by constructing a low dam across a natural swale are
generally preferred to sites that require excavation. Where practical, divert
sediment-free runoff away from the basin.
A skimmer is a sedimentation basin dewatering control device that withdraws
water from the basin's water surface,thus removing the highest quality water
for delivery to the uncontrolled environment.A skimmer is shown in Figure
6.64a. By properly sizing the skimmer's control orifice, the skimmer can be
made to dewater a design hydrologic event in a prescribed period. Because the
spillway is actually used relatively frequently,it should be carefully stabilized
using geotextiles,or rock if necessary,that can withstand the expected flows.
The spillway should be placed as far from the inlet of the basin as possible to
maximize sedimentation before discharge. The spillway should be located in
J` natural groundcover to the greatest extent possible
---Rev.6i0fi _ 6.64.1

The costs of using a skimmer system are similar, or occasionally less, than
a conventional rock outlet or perforated riser. However, the basin is more
efficient in removing sediment. Another advantage of the skimmer is that it
can be reused on future projects. The main disadvantage of the skimmer is
that it does require frequent maintenance,primarily in removing debris from
the inlet
A skimmer must dewater the basin from the top of the water surface. The rate
of dewatering must be controlled. A dewatering time of 24 to 72 hours is
required. Any skimmer design that dewaters from the surface at a con-
trolled rate is acceptable.
Arm Assembly
4— "C"Enclosure
Water Entry
PERSPECTIVE VIEW Unit
PVC End PVC Vent
PVC Elbow Schedule 40
Cap Pipe
PVC Pipe
Water Surface
�. PVC End r
Cap
Schedule 40
PVC Tee PVC Pipe PVC Pipe
$"Holes in - PVC Tee Orifice
Underside Flexible, Plate
Hose
O
Bottom Surface
END VIEW FRONT VIEW
Figure 6.64a Schematic of a skimmer,from Pennsylvania Erosion and Sediment Pollution Control Manual,
March,2000.
6.64.2 -- -- — Rev.6106

Practice Standards and Specifications
SKIMMER ORIFICE DIAMETER
In order to streamline the orifice sizing procedure, Figure 6.64b, may be
used. This design chart assumes the designer knows or has determined the
sedimentation basin's water storage volume in cubic feet and the desired
dewatering time (in days) for the basin under consideration. The skimmer
orifice size (in inches) can be read by entering Figure 6.64b from the x-axis
with the basin's water storage volume(in cubic feet),moving vertically to the
line that represents the basin's desired dewatering time(in days),then moving
to the left to they-axis.
Figure 6.64b Skimmer
orifice diameter as a function
of the basin volume and
basin dewatering time. '31 AD
0.25
.5
I
2
3
s — 0 0.25 day t 0.5 day A, I day
7
10
—X 2 days 3 days. 0 7 days
+5 days — 10 days
0.1
1000 10000 100000 1000000
DESIGN EXAMPLE
Example: The design professional in charge of designing the sedimentation
basin for a 10-acre construction site desires to use a skimmer to control
dewatering of a sedimentation basin. The sedimentation basin for a 10-acre
disturbed area requires a water storage volume of 18,000 cubic feet. The
desired dewatering time is 1-3 days.
Solution: Using the water storage volume of 18,000 cubic feet and the 1-3
day dewatering time on Figure 6.64b, a 2-inch orifice diameter is required.
(Adapted from Proper Sizing of the Control Orifice for the Faircloth Skimmer.
Pennsylvania State University Department of Agricultural and Biological
Engineering Fact Sheet#252.)
Rev.6106 - - 6.64.3

0
Design Criteria Summary: Skimmer Sediment Basin
Primary Spillway: Trapezoidal spillway with impermeable
membrane
Maximum Drainage Area: 10 acres
Minimum Volume: 1800 cubic feet per acre of disturbed area
Minimum Surface Area: 325 square feet per cfs of Qua peak inflow
Minimum L/W Ratio: 2:1
Maximum L/W Ratio: 6:1
Minimum Depth: 2 feet
Dewatering Mechanism: Skimmer
Minimum Dewatering Time: 24 hours
Baffles Required: 3 baffles
Drainage areas—Limit drainage areas to 10 acres.
Design basin life—Ensure a design basin life of 3 years or less.
Dam height—Limit dam height to 5 feet.
Basin locations—Select areas that:
• Provide capacity for storage of sediment from as much of the planned
disturbed area as practical;
•Exclude runoff from undisturbed areas where practical;
•Provide access for sediment removal throughout the life of the project;
•Interfere minimally with construction activities.
Basin shape—Ensure that the flow length to basin width ratio is at least 2:1
to improve trapping efficiency. Length is measured at the elevation of the
principal spillway.
Storage volume—Ensure that the sediment storage volume of the basin, as
measured to the elevation of the crest of the principal spillway, is at least
1,800 cubic feet per acre for the disturbed area draining into the basin(1,800
cubic feet is equivalent to half an inch of sediment per acre of basin disturbed
area).
Remove sediment from the basin when approximately one-half of the storage
volume has been filled.
Spillway capacity—The spillway system must carry the peak runoff from
the 10-year storm with a minimum 1 foot of freeboard in the spillway. Base
runoff computations on the disturbed soil cover conditions expected during
the effective life of the structure.
Sediment cleanout elevation—Determine the elevation at which the invert of
the basin would be half-full. This elevation should also be marked in the field
with a permanent stake set at this ground elevation(not the top of the stake).
6.64.4 Rev.6/06

Practice Standards and Specifications
Basin dewatering—The basin should be provided with a surface outlet. A
floating skimmer should be attached to a Schedule 40 PVC barrel pipe of the
same diameter as the skimmer arm. The orifice in the skimmer will control
the rate of dewatering. The skimmer should be sized to dewater the basin in
24-72 hours(1-3 days).
Outlet Protection—Discharge velocities must be within allowable limits for
the receiving stream(References: Outlet Protection).
Basin spillway—Construct the entire flow area of the spillway in undisturbed
soil if possible. Make the cross section trapezoidal with side slopes of 3:1 or
flatter.
•Capacity—The minimum design capacity of the spillway must be the peak
rate of runoff from the 10-year storm. Maximum depth of flow during the
peak runoff should be 6 inches. In no case should the freeboard of the
spillway be less than 1 foot above the design depth of flow.
• Velocity—Ensure that the velocity of flow discharged from the basin
is nonerosive for the existing conditions. When velocities exceed that
allowable for the receiving areas,provide outlet protection (References:
Outlet Protection).
Embankment—Ensure that embankments for skimmer sediment basins do
not exceed 5 feet in height (measured at the center line from the original
ground surface to the top of the embankment). Keep the crest of the spillway
outlet a minimum of 1.5 feet below the top of the embankment. Additional
freeboard may be added to the embankment height which allows flow through
a designated bypass location. Construct embankments with a minimum
top width of 5 feet and side slopes of 2:1 or flatter. Machine compact the
embankments.
Excavation—Where sediment pools are formed or enlarged by excavation,
keep side slopes at 2:1 or flatter for safety.
Erosion protection—Stabilize all areas disturbed by construction (except
the lower half of the sediment pool) by suitable means immediately after
completing the basin(References:Surface Stabilization).
Trap efficiency—Improve sediment basin trapping efficiency by employing
the following considerations in the basin design:
•Surface area—In the design of the settling pond,allow the largest surface
area possible.
•Length—Maximize the length-to-width ratio of the basin to prevent short
circuiting,and ensure use of the entire design settling area.
• Baffles—Provide a minimum of three porous baffles to evenly distribute
flow.across the basin and reduce turbulence.
•Inlets—Area between the sediment inlets and the basin should be stabilized
by geotextile material,with of without rocks(Figure 6.64c shows the area
with rocks). The inlet to basin should be located the greatest distance
possible from the principal spillway.
Rev.6/06 6.64.5

Dewatering—Allow the maximum reasonable detention period before the
basin is completely dewatered(at least 24 hours).
• Inflow rate—Reduce the inflow velocity and divert all sediment-free
runoff.
Plan View "
IN 2K
Inflow. g
"
structure
LU
ji���'
Offil
err " t Emergency spillway
Average _ Area*
Width W L �
* Area of basin water surface at Baffles
top of principal spillway elevation
Inflow Baffles
I'Freeboard Embankment
structure
W, c x
Dewaterm * � > r
F ' �' », . .; 6f�mm.•invertelevntionof
rb- . .kt�-
-"9i:;emergeneyspillway
Emergency
FilRer fnbric �e spillway
Sediment Cross-Section
storage zone
View
Figure 6.64c Example of a sediment basin with a skimmer outlet and emergency spillway. From Pennsylvania
Erosion and Sediment Pollution Control Manual,March,2000.
6.64.6 Rev.6/06

Practice Standards and Specifications
Construction 1. Clear,grub,and strip the area under the embankment of all vegetation and
root mat. Remove all surface soil containing high amounts of organic matter
Specifications and stockpile or dispose of it properly. Haul all objectionable material to the
designated disposal area. Place temporary sediment control measures below
basin as needed
2. Ensure that fill material for the embankment is free of roots, woody
vegetation, organic matter, and other objectionable material. Place the fill in
lifts not to exceed 9 inches,and machine compact it. Over fill the embankment
6 inches to allow for settlement.
3. Shape the basin to the specified dimensions. Prevent the skimming device
from settling into the mud by excavating a shallow pit under the skimmer or
providing a low support under the skimmer of stone or timber.
4. Place the barrel(typically 4-inch Schedule 40 PVC pipe)on a firm,smooth
foundation of impervious soil. Do not use pervious material such as sand,
gravel, or crushed stone as backfill around the pipe. Place the fill material
around the pipe spillway in 4-inch layers and compact it under and around
the pipe to at least the same density as the adjacent embankment. Care must
be taken not to raise the pipe from the firm contact with its foundation when
compacting under the pipe haunches.
Place a minimum depth of 2 feet of compacted backfill over the pipe spillway
before crossing it with construction equipment. In no case should the pipe
conduit be installed by cutting a trench through the dam after the embankment
is complete.
5. Assemble the skimmer following the manufacturers instructions, or as
designed.
6. Lay the assembled skimmer on the bottom of the basin with the flexible
joint at the inlet of the barrel pipe. Attach the flexible joint to the Barrel pipe
and position the skimmer over the excavated pit or support. Be sure to attach
a rope to the skimmer and anchor it to the side of the basin. This will be used
to pull the skimmer to the side for maintenance.
7. Earthen spillways—Install the spillway in undisturbed soil to the greatest
extent possible. The achievement of planned elevations,grade, design width,
and entrance and exit channel slopes are critical to the successful operation
of the spillway. The spillway should be lined with laminated plastic or
impermeable geotextile fabric. The fabric must be wide and long enough to
cover the bottom and sides and extend onto the top of the dam for anchoring.
in a trench.The edges may be secured with 8-inch staples or pins.The fabric
must be long enough to extend down the slope and exit onto stable ground.
The width of the fabric must be one piece, not joined or spliced; otherwise
water can get under the fabric.If the length of the fabric is insufficient for the
entire length of the spillway,multiple sections,spanning the complete width,
may be used. The upper section(s) should overlap the lower section(s) so
that water cannot flow under the fabric. Secure the upper edge and sides
of the fabric in a trench with staples or pins. (Adapted from "A Manual for
Designing,Installing and Maintaining Skimmer Sediment Basins." February,
1999. J.W.Faircloth& Son.).
8. Inlets—Discharge water into the basin in a manner to prevent erosion. Use
temporary slope drains or diversions with outlet protection to divert sediment-
laden water to the upper end of the pool area to improve basin trap efficiency
(References:Runoff Control Measures and Outlet Protection).
Rev.6/06 6.64.7

0
9. Erosion control—Construct the structure so that the disturbed area is
minimized. Divert surface water away from bare areas. Complete the
embankment before the area is cleared. Stabilize the emergency spillway
embankment and all other disturbed areas above the crest of the principal
spillway immediately after construction(References:Surface Stabilization).
10. Install porous baffles as specified in Practice 6.65,Porous Baffles.
11. After all the sediment-producing areas have been permanently stabilized,
remove the structure and all the unstable sediment. Smooth the area to
blend with the adjoining areas and stabilize properly (References: Surface
Stabilization).
Maintenance Inspect skimmer sediment basins at least weekly and after each significant
(one-half inch or greater) rainfall event and repair immediately. Remove
sediment and restore the basin to its original dimensions when sediment
accumulates to one-half the height of the first baffle. Pull the skimmer to
one side so that the sediment underneath it can be excavated. Excavate the
sediment from the entire basin, not just around the skimmer or the first cell.
Make sure vegetation growing in the bottom of the basin does not hold down
the skimmer.
Repair the baffles if they are damaged. Re-anchor the baffles if water is
flowing underneath or around them.
If the skimmer is clogged with trash and there is water in the basin, usually
jerking on the rope will make the skimmer bob up and down and dislodge
the debris and restore flow. If this does not work, pull the skimmer over to
the side of the basin and remove the debris. Also check the orifice inside the
skimmer to see if it is clogged;if so remove the debris.
If the skimmer arm or barrel pipe is clogged, the orifice can be removed and
the obstruction cleared with a plumber's snake or by flushing with water. Be
sure and replace the orifice before repositioning the skimmer.
Check the fabric lined spillway for damage and make any required repairs
with fabric that spans the full width of the spillway. Check the embankment,
spillways, and outlet for erosion damage, and inspect the embankment for
piping and settlement. Make all necessary repairs immediately. Remove all
trash and other debris from the skimmer and pool areas.
Freezing weather can result in ice forming in the basin. Some special
precautions should be taken in the winter to prevent the skimmer from
plugging with ice.
6.64.8 Rev.6/06

Practice Standards and Specifications
Reference Jarrett,A.R. Proper Sizing of the Control Orifice for the Faircloth Skimmer.
Pennsylvania State University Department of Agricultural and Biological
Engineering Fact Sheet#252.
http://www.age.psu.edu/extension/factsheets/f/F252.pdf
Jarrett,A.R. Controlling the Dewatering of Sedimentation Basins. Pennsy-
lvania State University Department of Agricultural and Biological Engine-
ering Fact Sheet#253.
http://www.age.psu.edu/extension/factsheets/f/F253.pdf
Erosion and Sediment Pollution Control Manual, March,2000. Common-
wealth of Pennsylvania Dept. of Environmental Protection, Office of Water
Management,Document#363-2134-008.
http://www.co.centre.pa.us/conservation/esmanual.pdf.
McLaughlin,Richard. SoilFacts: Dewatering Sediment Basins Using Surface
Outlets. N.C. State University, Soil Science Department.
A Manual for Designing,Installing and Maintaining Skimmer Sediment
Basins. February, 1999. J.W.Faircloth& Son.
Surface Stabilization
6.10,Temporary Seeding
6.11,Permanent Seeding
6.12, Sodding
6.13,Trees, Shrubs,Vines, and Ground Covers
Runoff Control Measures
6.20,Temporary Diversions
6.21,Permanent Diversions
6.22,Perimeter Dike
Outlet Protection
6.41,Outlet Stabilization Structure
Sediment Traps and Barriers
6.65,Porous Baffles
Appendices
8.03,Estimating Runoff
8.07, Sediment Basin Design
i
Rev.6/06 6.64.9

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