WQ0018519_Final Permit_20001026

State of North Carolina
Department of Environment
and Natural Resources
,division of Water Quality
James B. Hunt, Jr., Governor
Bill Holman, Secretary
Kerr T. Stevens, Director
October 26, 2000
Jack Williams, District Environmental Manager
Colonial Pipeline Company
7524 Kenstead Circle
Paw Creek, North Carolina 28130
Dear Mr. Williams:
NCDENR
NORTH CAROLINA DEPARTMENT OF
ENv3RONmE:Nr AND NATURAL RESOURCE5
Subject: Permit No. WQ0018519
Colonial Pipeline Company
Kannapolis Booster Station
Groundwater Remediation Facilities
Cabarrus County
As per your request to the Groundwater Section to allow the use of piezometers to manually test the
water levels in the infiltration gallery we have modified condition 8 of the Groundwater Requirements of
Permit Number WQ0019519. Please replace page 4 with the enclosed page 4 into Permit No. WQ0018519
issued August 11, 2000.
If you need any additional information concerning this matter, please contact Teresa Rodriguez at
[phone] extension 358.
Sin re ,
G
,Kerr T. Stevens
cc: Cabarrus County Health Department
Progressive Engineering and Construction Inc_
Mooresville Regional Office, Water Quality Section
Mooresville Regional Office, Groundwater Section
Bob Cheek, Groundwater Section, Central Office
Technical Assistance and Certification Unit
Non -Discharge Compliance/Enforcement Unit
1617 Mail Service Center, Raleigh, North Carolina 27699-1617 Telephone [phone] Fax [phone]
An Equal Opportunity Affirmative Action Employer 50% recycled/10% post -consumer paper

4.4 Existing monitor wells MW-1, MW-3, MW-4, MW-5, MW-6, MW-7, MW-S, MW-9, MW-10,
MW-12, MW-13, MW-14, MW-15 and MW-16 shall be sampled prior to start-up and daily for
the first three days for the following parameters:
Water Level
5. Existing monitor wells MW-I, MW-3, MW-4, MW-5, MW-6, MW-7, MW-8, MW-9, MW-10,
MW-12, MW-13, MW-14, MW-15 and MW-16 shall be sampled every February and August for
the following parameters:
BTEX (by EPA Method 602)
MTBE (by EPA Method 602)
Water Level
6. Monitor well MW-15 (recovery well) shall be sampled every February, May, August and
November for the following parameters:
BTEX (by EPA Method 602)
MTBE (by EPA Method 602)
Water Level
The groundwater treatment system shall consistently achieve Class GA Groundwater Standards in
the treated effluent, as outlined under Title 15A, Subchapter 2L, Section .0202(g), prior to
discharge to the infiltration gallery. The treated water discharged into the infiltration gallery must
not violate the Class GA Groundwater Quality Standards for any constituent beyond the
compliance boundary, nor cause the migration of contamination into unaffected areas. if the
treatment system fails to consistently achieve these standards, additional treatment units or
changes in operational methods may be required.
Two piezometers shall be installed in each leg of the infiltration gallery to manually test the water
levels, initially after start-up, daily for three days, weekly for the remainder of the month, and
monthly thereafter. 1f the water level is within one (1) vertical foot of the distribution line, the
system shall be shut down and an evaluation of the reasons for the elevated water level shall
commence. The appropriate corrective steps shall be taken so that the water level remains at least
two (2) vertical feet below the distribution line. After the corrective measures are taken, manual
water levels shall be collected daily for three days, weekly for the remainder of the month and
monthly thereafter to demonstrate compliance. All water level measurements shall be
documented, maintained on -site and provided to the Groundwater Section upon request.
9. Within sixty (60) days of completion of the groundwater remediation system, the permittee shall
submit two original copies of a scaled topographic map (scale no greater than 1":100) signed and
sealed by a professional engineer or a state licensed land surveyor that indicates all of the
following information:
a. the location and identity of each monitoring well (using renamed well names),
b. the location of all components of the waste disposal system,
c. the location of all property boundaries,
d. the latitude and longitude of the established horizontal control monument,
e. the relative elevation of the top of the well casing (which shall be known as the "measuring
point"), and
f. the depth of water below the measuring point at the time the measuring point is
established.
4

Permit No. WQO418519
Subjed.- Permit No. WQ0018519
Date: Thu, 7 Sep 2000 11:47:16 EDT
From: [e-mail]
To: [e-mail]
CC: [e-mail], [e-mail]
Salam
As we discussed and agreed to this morning we are requesting a modification
to Permit No. WQ0018519 Colonial. Pipeline Company - Kannapolis Booster Station
We are requesting that condition
IV Groundwater Requirements 8. be modified as presented below:
Water levels from the two piezometers in each leg of the infiltration gallery
will be manually collected in accordance with the following schedule:
Initially at startup, daily for three days, weekly for the remainder of the
month, and monthly thereafter. If the water level is within one (1) vertical
foot of the distribution line the system will be shut down and an evaluation
of the reasons for the elevated will commence. The appropriate corrective
steps shall be taken so that the water level remains at least two (2)
vertical feet below the distribution .line. If corrective measures need to be
taken manual water levels shall be collected daily for three days, weekly for
the remainder of the month and monthly thereafter to demonstrate compliance.
We hope you find this language and terms acceptable.
Thank you for your assistance. Please do not hesitate to contact either Jack
Williams at [phone] or myself at [phone] if you have any
questions.
Gregory Rorech
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