WQ0030668_Regional Office Historical File Pre 2018

Mr. James Guffey„ Assist, City Manager
City of Mount Holly
131 South Main Street
Post Office Box 406
Mount Holly, NC 28120
North Carolina Depaitment n
August 16, 2006
Mich
ncr
William G. Ross ir., See rcacy°
nnrnent and Natural Resources
Alan W. Klimek, P.E. Director
Division of Water Quality
Subject: Permit No. WQ0030668
National Gypsum
City of Mount Holly
Wastewater Collection System Permit
Gaston County, North Carolina
Dear Mr. Guffey:
In accordance with your application received on August 7, 2006, we are forwarding herewith
Permit No, W00030668, dated August 16, 2006, to the City of Mount Holly for the construction and
operation of the subject wastewater collection system extension. This permit shall be effective from the
date of issuance until rescinded„ and shall be subject to the conditions and limitations as specified.
therein. This cover letter shall be considered a part of this permit and is therefore incorporated therein
by reference.
Please pay particular attention to Permit Condition 3, which requires that the wastewater
collection facilities be properly operated and maintained in accordance with 15A NCAC 2H .0227 or any
individual system -wide collection system permit issued to the Permittee.
Permitting of this project does not constitute an acceptance of any part of the project that does
not meet 1) 15A NCAC 2H .0200; 2) the Division of Water Quality's (Division) Gravity Sewer Minimum
Design Criteria adopted February 12, 1996, as applicable; 3) and the Division's Minimum Design
Criteria for the Fast -Track Permitting of Pump Stations and Force Mains adopted June 1, 2000, as
applicable, unless specifically mentioned herein. Division approval is based on acceptance of the
certification provided by a North. Carolina -licensed Professional Engineer in the application. It shall be
the Permittee's responsibility to ensure that the as -constructed project meets the appropriate design
criteria and rules. Failure to comply may result in penalties in accordance with North Carolina General
Statute §143-215.6A through §143-215.6C, construction of additional or replacement wastewater
collection facilities, andlor referral of the North Carolina -licensed Professional Engineer to the licensing
board.
vlcoresviile Regional Office 610 East Center Ave., Strite 301 S'l�ores�rttte,
tnterne1: www.ncwaterquality.or Customer Service: 1-877-623-6748
An Equal Opportunity/AfrhmatV Action Employer - 50% Recycted110% Post Consumer Paper
NC 28115 Phone: [phone]
"704, 6 3-6040
Ni tthCarolii
i atural

Mr, Guffey
August 16, 2006
Page 2
In accordance with the provisions of Article 21 of Chapter 143, General Statutes of North
Carolina as amended, and other applicable Laws, Rules, and Regulations, permission is hereby
granted to the City of Mount Hotly for the construction and operation of approximately .052 miles of 8-
inch gravity sewer, as part of the National Gypsum project, and the discharge of 4,375 gallons per day
of collected domestic wastewater into the City of Mount Holly's existing sewerage system, pursuant to
the application received August 7, 2006, and in conformity with 15A NCAC 2H .0200; the Division's
Gravity Sewer Minimum Design Criteria adopted February 12, 1996, as applicable; the Division's
Minimum Design Criteria for the Fast -Track Permitting of Pump Stations and Force Mains adopted
June 1, 2000, as applicable; and other supporting data subsequently filed and approved by the
Department of Environment and Natural Resources and considered a part of this permit.
The sewage and wastewater collected by this system shall be treated in the City of Mount
Holly's WWTP (NPDES Permit No. NC0021156) prior to being discharged into the receiving stream,
if any parts, requirements, or limitations contained in this permit are unacceptable, you have the
right to request an adjudicatory hearing upon written request within 30 days following receipt of this
permit. This request must be in the form of a written petition, conforming to Chapter 150B of North
Carolina General Statutes, and filed with the Office of Administrative Hearings, 6714 Mail Service
Center, Raleigh, NC 27699-6714. Unless such demands are made, this permit shall be final and
binding.
If you need additional information concerning this matter, please contact Ms. Dee Browder at
[phone].
Sincerely,
/9. aci
for Alan W, Klimek, P.E.
cc: Mooresville Regional Office, Surface Water Protection (WWTP Permit No, NC0021156)
Vincent Keene, PBS & J
Surface Water Protection Central Files
Marie Doklovic, PERCS

NORTH CAROLINA
ENVIRONMENTAL MANAGEMENT COMMISSION
DEPARTMENT OF ENVIRONMENT AND NATURAL RESOURCES
RALEIGH
WASTEWATER COLLECTtON SYSTEM EXTENSION PERMIT
This permit shall be effective from the date of issuance until rescinded and shall be subject to the
following specified conditions and limitations:
1. This permit shall become voidable unless the wastewater collection facilities are constructed in
accordance with the conditions of this permit; 15A NCAC 2H ,0200; the Division of Water Quality's
(Division) Gravity Sewer Minimum Design Criteria adopted February 12, 1996, as applicable; the
Division's Minimum Design Criteria for the Fast -Track Permitting of Pump Stations and Force
Mains adopted June 1, 2000, as applicable; and other supporting materials unless specifically
mentioned herein.
2. This permit shall be effective only with respect to the nature and volume of wastes described in the
application and other supporting data.
3, The wastewater collection facilities shall be properly maintained and operated at all times. The
Permittee shall maintain compliance with an individual system -wide collection system permit for the
operation and maintenance of these facilities as required by 15A NCAC 2H .0227. If an individual
permit is not required, the following performance criteria shall be met as provided in 15A NCAC 2H
,0227.
a.
The sewer system shall be effectively maintained and operated at all times to prevent
discharge to land or surface waters, and any contravention of the groundwater standards in
15A NCAC 2L .0200 or the surface water standards in 15A NCAC 2B .0200.
b. A map of the sewer system shall be developed and shall be actively maintained.
c. An operation and maintenance plan shall be developed and implemented.
1 Pump stations that are not connected to a telemetry system shall be inspected every day (i.e,
365 days per year). Pump stations that are connected to a telemetry system shall be
inspected at least once per week.
e. High -priority sewer lines shall be inspected at least once per every six-month period of time.
f. A general observation of the entire sewer system shall be conducted at least once per year.
g. Inspection and maintenance records shall be maintained for a period of at least three years.
h. Overflows and bypasses shall be reported to the appropriate Division regional office in
accordance with 15A NCAC 2B .0506(a), and public notice shall be provided as required by
North Carolina General Statute §143-215,1C.

4. This permit is not transferable. In the event there is a desire for the wastewater collection
facilities to change ownership, or there is a name change of the Permittee, a formal permit request
shall be submitted to the Division accompanied by documentation from the parties involved, and
other supporting materials as may be appropriate. The approval of this request shall be
considered on its merits and may or may not be approved.
5. Construction of the gravity sewers, pump stations, and force mains shall be scheduled so as not to
interrupt service by the existing utilities nor result in an overflow or bypass discharge of wastewater
to the surface waters of the State,
6. Per 15A NCAC 2H .0220, upon completion of construction and prior to operation of these
permitted facilities, the completed Engineering Certification form attached to this permit shall be
submitted with the required supporting documents to the address provided on the form, A complete
certification is one where the form is fully executed and the supporting documents are provided as
applicable.
7. A copy of the construction record drawings shall be maintained on file by the Permittee for the life
of the wastewater collection facilities.
Failure to abide by the conditions and limitations contained in this permit; 15A NCAC 2H .0200, the
Division's Gravity Sewer Design Criteria adopted February 12, 1996 as applicable; the Division's
Minimum Design Criteria for the Fast -Track Permitting of Pump Station and Force Mains adopted
June 1, 2000 as applicable; and other supporting materials may subject the Permittee to an
enforcement action by the Division, in accordance with North Carolina General Statutes §143-
215.6A through §143-215.6C.
9. In the event that the wastewater collection facilities fail to perform satisfactorily, including the
creation of nuisance conditions, the Permittee shall take immediate corrective action, including
those as may be required by this Division, such as the construction of additional or replacement
facilities.
10. The issuance of this permit shall not exempt the Permittee from complying with any and all
statutes, rules, regulations, or ordinances that may be imposed by other government agencies
(local, state and federal) which have jurisdiction, including but not limited to applicable river buffer
rules in 15A NCAC 2B ,0200, erosion and sedimentation control requirements in 15A NCAC Ch. 4
and under the Division's General Permit NCG010000, and any requirements pertaining to wetlands
under 15A NCAC 2B .0200 and 15A NCAC 2H .0500,
11. Noncompliance Notification:
The Permittee shall verbally report to a Division of Water Quality employee at the Mooresville
Regional Office, telephone number [phone], as soon as possible, but in no case more than
24 hours or on the next working day, following the occurrence or first knowledge of the occurrence
of either of the following:
a. Any process unit failure, due to known or unknown reasons, that renders the facility incapable
of adequate wastewater transport, such as mechanical or electrical failures of pumps, line
blockage or breakage, etc.; or

b. Any failure of a pumping station or sewer lire resulting in a by-pass directly to receiving waters
without treatment of all or any portion of the influent to such station or facility.
Voice mail messages or faxed information is permissible, but shall not be considered as the
initial verbal report. Overflows and spills occurring outside normal business hours may also be
reported to the Division of Emergency Management at telephone number [phone] or
[phone]. Persons reporting any of the above occurrences shall file a spill report by
completing Part 1 of Form C - (or the most current Division approved form), within five days
following first knowledge of the occurrence, This report shall outline the actions taken or
proposed to ensure that the problem does not recur. Part II of Form CS-SSO (or the most
current Division approved form) can also be completed to show that the SSO was beyond
control.
Permit issued this the 1 th day of August, 2006.
NORTH CAROLINA ENVIRONMENTALMANAGEMENT COMMISSION
for Alan W. E., Director
Division of Water Quality
By Authority of the Environmental Management ornrnision
Permit Number WQ0030668

Fast Track Engineerinq Certification
City of Mount Holly
Permit No. WQ0030668
August 16, 2006
Complete and submit this form to the permit issuing regional office with the foliowing:
One copy of the project record drawings (plan & profile views of sewer lines) of the wastewater collection
system extension
Supporting design calculations (selected pumps, system curve, operating point, available storage if portable
generator(s) or storage greater than longest past three year outage reliability option selected) for any pump
stations permitted as part of this project
Changes to the project should be clearly identified on the record drawings or En written summary form. Permit
modifications are re uired for an chap es resultin in non-com fiance with this ermit re ulations or
minimum design criteria.
This project shall not be considered complete nor allowed to operate until this Engineer"s Certification and all
required supporting documentation have been received by the Division. Therefore, it is highly recommended
that this certification be sent in a manner that provides proof of receipt by the Division.
ENGINEERS CERTIFICATION
LI Partial El Final
, as a duly registered Professional Engineer in the State of North Carolina, having
been authorized to observe al periodically, ] weekly, 0 full time) the construction of the National Gypsum,
Gaston County project for the Permittee hereby state that, to the best of my abilities, due care and diligence was
used in the observation of the construction such that the construction was observed to be built within substantial
compliance of this permit; 15A NCAC 2H .0200; the Division of Water Quality's (Division) Gravity Sewer Minimum
Design Criteria adopted February 12, 1996 as applicable; the Division's Minimum Design Criteria for the Fast -
Track Permitting of Pump Stations and Force Mains adopted June 1, 2000 as applicable; and other supporting
materials.
North Carolina Professional Engineer's
seal, signature, and date:
SEND THIS FORM & SUPPORTING DOCUMENTATION
WITH REQUIRED ATTACHMENTS TO THE FOLLOWING ADDRESS
MOORESVILLE REGIONAL OFFICE
SURFACE WATER PROTECTION
610 EAST CENTER AVENUE, SUITE 301
MOORESVILLE NC 28115
The Permittee i responsible for tracking all partial certifications up until a final certification is received. Any
wastewater flow made tributary to the wastewater collection system extension prior to completion of this
Engineers Certification shall be considered a violation of the permit and shall subject the Permittee to appropriate
enforcement actions.

FAST -TRACK APPLICATION for GRAVITY SEWERS, PUMP STATIONS, AND FORCE MAINS
PAGE 3
USE THE TAB KEY TO MOVE FROM FIELD TO FIELD!
Owner:
la. City of Mt. Holly Wastewater Treatment Facility (WWTF)
Full Legal Name (company, municipality, HOA, utility, etc.)
Application Number:
(to be completed by DWQ)
O 1 b„ James puffey, Assist, City Manager
- Signing Official Name and Title (Please review 15A NCAC 2H .0206(b) for authorized signing officials!)
• 1 c. The legal entity who will ow this system is:
Individual Ej Federal 'Municipality 0 State/County 0 Private Partnership 0 Corporation LI Other p cify :
O 1d. 131 South Main Street le. Mt, Holly
LL City
if, lg. 28120
Zip Code
O lh. 1j. jamieguffe
4:( Facsimile E-mail
O 2.
Q.
a.
2a.
3,
3a,
3b.
1.
Mailing Address
North Carolina
State
704-827-3931 11,
Telephone
Project (Facility) Information:
National Gypsum Sanita
Brief Project Name (perm
Contact Person:
Vincent G. Keene
Name and Affiliation o
704-522-7275
Phone Number
Project is KO/New
er Project
refer to this name)
Someone
2b, Gaston
County Where Project is Located
Jho Can Answer Questions About this Application
_3c. [e-mail]
0 Modification (of an existing permit)
E-mail
If Modification, Permit No.:
For modifications, attach a separate sheet clearly explaining the reason for the modification (i.e. adding another
phase, changing line size/length, etc.). Only include the modified information in this permit application - do not
duplicate project information in B(7) and B(10-11) that has already been included in the original permit.
2. Owner is 5/Public (skip to Item B(3)) 0 Private (go to Item 2(a))
2a. If private, applicant will be: 2b. If sold, facilities owned by a (must choose
e
El Retaining Ownership (i.e. store, church, single office, etc.) or El Public Utility (Instruction III)
Z Ej Leasing units (lots, townhomes, etc. - skip to Item B(3)) EI Homeowner Assoc./Developer (Instruction IV)
O El Selling units (lots, townhomes, etc. - go to Item B(2b))
I— 3, Cit_y_of Mt. Ho
Owner of Wastewater Treatment FacilityWWTF) Treating Wastewater From This Project
2
re 4a, City of Mt. Holly WWTF 4b. NC 0021156
O Name ofWWTF WWTF Permit No.
U. 5a, City of Mt, Holly 5b. 8" VGravity 5c.
Z Owner of Downstream Sewer Receiving Sewer Size El Force Main
6. The origin of this wastewater is (check all that apply):
ai
El Residential Subdivision
0 Apartments/Condominiums
0 Mobile Home Park
LI School
0 Restaurant
Q1Dffice
El Car Wash
0 Institution
O Hospital
O Church
O Nursing Home
El Other (specify):
Permit Number of Downstream Sewer (if known)
100 % Domestic/Commercial
% Industrial
% Other (specify):
7. Volume of wastewater to be allocated for this particular project. 4375 gallons per day
*Do not include previously permitted allocations
8. If the permitted flow is zero, indicate why:
El Interceptor Line - Flow will be permitted in subsequent permits that connect to this line
0 Flow has already been allocated in Permit No.
Ej Rehabilitation or replacement of existing sewer with no new flow expected
FTA 02./03 - Rev, 3 04/05

FAST -TRACK APPLICATION for GRAVITY SEWERS, PUMP STATIONS, AND FORCE MAINS PAGE 4
kTION (CONTINUED)
ce
0
LL
z
9. Provide the wastewater flow calculations used in determining the permitted flow in accordance with 15A NCAC 2H
.0219(1) for Item B(7) or the design flow for line or pump station sizing if zero flow in the space below. Values other than
that in 15A NCAC 2H .0219(1)(1-2) must be supported with actual water or wastewater use data in accordance with 15A
NCAC 2H .0219(1)(3).
Manufacturing - 3 shifts with 40 employees per shift at 35 gpd/employee = 4200 gpd.
Office — 1 shift with 7 employees at 25 gpd/employee = 175 gpd Total = 4,375 gpd
10. Summary of Sewer Lines to be Permitted (attach additional sheets if necessary)
Size (inches) Length (feet)
8
Gravity or Force Main
(use the pull down menu)
2284 Gravity
ENTER TOTAL LINE LENGTH IN MILES 0.052 miles
ummary of Pump Stations to be Permitted (attach additional sheets as necessary)
Location ID Power Reliability Option
(self chosen - as shown on Design Flow Operational Point (1- dual line feed; 2- permanent generator w/ATS; 3-
plans for cross-reference) (MGD) GPM @ TDH portable generator witelemetry; 4-wet well storage)
E 12.
Ca
N/A
Does the sewer system comply with the Minimum Design Criteria for the Fast Track Permitting of Pump Stations and Force
Majns (latest version), the Gravity Sewer Minimum Design Criteria (latest version) and 15A NCAC 2H .0200 as applicable?
Yes El No If no, please reference the pertinent minimum design criteria or regulation and indicate why a
variance is requested. SUBMIT TWO COPIES OF PLANS, SPECIFICATIONS OR CALCULATIONS
PERTINENT TO THE VARIANCE WITH YOUR APPLICATION
13. Have the following permits/certifications been submitted for approval?
Wetland/Stream Crossings - General Permit or 401 Certification? 'Yes Eli No E] NIA
Sedimentation and Erosion Control Plan? g-Yes El No [i] N/A
Stormwater? 2/Yes El No El N/A
14. Does this project involve aerial lines or siphons? Check if yes: Lil
These lines will be considered hiah priority and must be checked once every six months
15. Does this project have gravity sewer lines designed at minimum slopes? ID
Be aware that the Division will not accept installed lines more than 10% flatter than the minimum slope, Lines installed outside this tolerance should be
corrected prior to submitting the final engineering certification.,
FTA 02/03 - Rev. 3 04 05

FAST -TRACK APPLICATION for GRAVITY —ERS, PUMP ST. T OM, AND FORCE MAINS PAGE 5
0
LU
0
(I)
0
1. Use the Division's guidance document entitled, "DETERMINING STREAM CLASSIFICATIONS FOR FORM FTA 02/03
(FAST -TRACK SEWER SYSTEMS)" to collect and record the stream classification data below (attach additional sheets as
necessary). This document is available from our web site or by contacting the appropriate Division of Water Quality
regional office (see instructions for addresses) OR indicate the following:
A Stream Classification is not needed because all parts of the project are at least 100 feet away from any down slope
waterbody; AND,
LI A Stream Classification is not needed because the design does not depend on wet well storage as a power reliability
option for any pump station near a Class C down slope waterbody.
Location ID on Map
(self chosen - as shown on Name of Waterbody Stream Waterbody
map for cross-reference) Waterbody County River Basin Index Classification
F UT to Catwaba River Gaston Catawba C
Submit the 8.5" x 11" COLOR topographic map as required in Instruction VI
regardless of whether a classification is provided!
1. Applicant's Certification:
1, James Guffey, attest that this application for National Gypsum Sanitary Sewer Project
has been reviewed by me and is accurate and complete to the best of my knowledge, 1 understand that if all required
parts of this application are not completed and that if all required supporting documentation and attachments are not
included, this application package is subject to being returned as incomplete, Note: In accordance with North Carolina
General Statutes 143-215,6A and 143-215,6B, any person who knowingly makes any false statement, representation, or
certification in any application shall be guilty of a Class 2 misdemeanor which may include a fine not to exceed $10„000
as w#as civil penalties up $25,000 per violation,
la, V/ V 07C,
Sighing Official Sign u
2. Arofessional Engineer's Certification:
Date
attest that this application for National Gypsum Sanitary Sewer Project has been reviewed by me and is accurate,
complete and consistent with the information in the engineering plans, calculations, and all other supporting documentation
to the best of my knowledge, I further attest that to the best of my knowledge the proposed design has been prepared in
accordance with the applicable regulations, Gravity Sewer Minimum Design Criteria for Gravity Sewers adopted February
12, 1996, and the Minimum Design Criteria for the Fast -Track Permitting of Pump Stations and Force Mains adopted June
1, 2000 and the watershed classification in accordance with Division guidance. Although certain portions of this submittal
package may have been developed by other professionals, inclusion of these materials under my signature and seal
signifies that 1 have reviewed this material and have judged it to be consistent with the proposed design, Note: In
accordance with NC General Statutes 143-215.6A and 143-215,6B, any person who knowingly makes any false statement,
representation, or certification in any application shall be guilty of a Class 2 misdemeanor which may include a fine not to
exceed $10,000 as well as civil penalties up to $25,000 per violation,
2a. Vincent G. Keene
Professional Engineer Name
2b, PBS&J
Engineering Firm
2c, 5200 77 Center Drive, Suite 500
Mailing Address
2d, Charlotte
City
2e, NC 2f. 28217
State Zip
2g. 704-522-7275 2h, 704-523-6116 2i, [e-mail]
Telephone
Facsimile E-mail
Seal, Signature & Date
1-01, A ft At

20. i Top a+, us d
Scala. 1 26,000 Map Flotation, 0" Magnetic Declination: 6.61W

Permit Number 00030668
Program ate oryr
Non -discharge
Permit Type
Gravity Sewer Extension„ Pump Stt
Extensions
Primary Reviewer
de.browder
Permitted plow
4375
d ty
Facility Maine
National Gypsum
Location Address
Owner
Owner Name
City of Mount Hilly
Dates/erls
orig issue App Received
08/07/06
Regulated Activities
industriallCurnmercial wiiaikhwvater
w f tewatei collection
utfall NULL
ni
uro Sewer
Scheduled
t issuance
eniral Fries. APS SwJr
i8116/06
Permit Tracking Slip
tatus Project Type
in review New Project
Version
A
Permit Classifiati�iri
Individual
Permit Contact Affiliation
Vincent Keene, PE
5200 77 Center Dr
Charlotte
NC 8 1
l ajor/Minor _ Region
Minor Mooresville
County
Gaston
Facility Contact 4,ffila"tion
Own r Type
Government - Municipal
Owner Affiliation
David Krauss
PO Box 406 1 S Main
Mount Hotly
Pahl tc Notice
u
NC 81
Effective Expired'i
d(Ree tyen ..
Additional inloririatior re uesied
Additional infori ation received
Waterbody Name
Stream Index Number Currant Class
Subbasiri

Fast Track Engineering Certification
City of Mount Holly
Permit No, WQ0030668
August 16, 2006
Complete and submit this form to the permit issuing regional office with the following:
• One copy of the project record drawings (plan & profile views of sewer lines) of the wastewater collection
system extension
• Supporting design calculations (selected pumps, system curve, operating point, available storage if portable
generator(s) or storage greater than longest past three year outage reliability option selected) for any pump
stations permitted as part of this project
Changes to the project should be clearly identified on the record drawings or in written summary form, Permit
modifications are required for any changes resulting in non-compliance with this permit, regulations or
minimum design criteria,
This project, shall not be considered complete nor allowed to operate until this Engineer's Certification and all
required supporting documentation have been received by the Divisiom Therefore, it is highly recommended,
that this certification be sent in a manner that provides proof of receipt by the Division,
ENGINEER'S CERTIFICATION
Partial EKFinaI
1,1—, as a duly registered Professional Engineer in the State of North Carolina, having
been authorized to observe (2 periodically, LJ weekly, E] full time) the construction of the National Gypsum,
Gaston County project for the Permittee hereby state that, to the best of my abilities, due care and diligence was
used in the observation of the construction such that the construction was observed to be built within substantial
compliance of this permit: 15A NCAC 2H .0200, the Division ofWater Quality's (Division) Gravity Sewer Minimum
Design Criteria adopted February 12, 1996 as applicable; the Division's Minimum Design Criteria for the Fast -
Track Permitting of Pump Stations and Force Mains adopted June 1, 2000 as applicable; and other supporting
materials.
North Carolina Professional Engineer's
seal, signature, and date:
CARO(/
144%
SEND THIS FORM & SUPPORTING DOCUMENTATION
WITH REQUIRED ATTACHMENTS TO THE FOLLOWING ADDRESS
MOORESVILLE REGIONAL OFFICE
SURFACE WATER PROTECTION
610 EAST CENTER AVENUE, SUITE 301
MOORESVILLE NC 28115
The Permittee is responsible for tracking all partial certifications up until a final certification is received. Any
wastewater flow made tributary to the wastewater collection system extension prior to completion of this
Engineers Certification shall be considered a violation of the permit and shall subject the Permittee to appropriate
enforcement actions.

�crv°i[le Regional nl c
1 rfl ce Water Pr atcctitm
610 East Center Avenue, Suite 301
Mooresville, 1 l
RE; National ypsu F1 Salutary Sewe En i11 Curs Certification
M. De c Browder,
`larch April , 2007
Please fi111 the enclosed Engineers el ficaticlu and CD of llc a -built project drawi
for the National Gypsum sanitary sew r system. Please call rC1e if you need additional
information.
PBS
5200 77 Center r)rive NC 11 17 ta>st 104.5._ 7275 Fax tl4. ? fit 16 * ra°% P Si,C(