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PATNA
OIL&GAS CORPORATION
1625 Broadway, Suite 2000
Denver, Colorado 80202
(303) 389-3600
(303) 389-3680 Fax
October 5, 2004 C'cld County Pir.rnh; IY ..r,rtnent
GREELEY OFFICE
OCT 1 2 2004
Via Fax (970-304-6498) & U.S. MAIL
°,ECCLVED
Weld County-Department of Planning Services
Attn: Chris Gathman
1555 N. 17th Avenue
Greeley, CO 80634
Re: USR-729
Dear Mr. Gathman:
As you know, Patina Oil & Gas Corporation ("Patina") has requested that USR-729 be amended
to allow an average of twenty (20) truck trips per day to the water disposal facility. Patina has
reviewed memoranda from the Department of Environmental Health Services (attached as
Exhibit A) and from the Public Works Department (attached as Exhibit B) regarding this
proposed request. Pursuant to Exhibit B, Patina has negotiated a Long-Term Road Maintenance
and Improvements Agreement (attached as Exhibit C).
Based upon Patina's acceptance of the conditions set forth in the memoranda and the execution
of the Long-Term Road Maintenance Improvements Agreement, we request that the Department
of Planning Services approve the requested amendment to USR-729 as a minor change. Patina
understands that, upon approval, these conditions and the Long-Term Road Maintenance
Improvements Agreement would become enforceable standards of USR-729. Please indicate
such approval of the Department of Planning Services by countersigning the enclosed copy of
this letter and returning it to the attention of the undersigned. Furthermore, please contact the
undersigned if you have any comments or questions regarding this request.
Sincerely,
PAT hOIL & AS CORPORATION
avid W. S. le
Vice President
0 C
MEMORANDUM
a 14(iit TO: : CHRIS GATEMAN, PL G SERVICES
FROM: CINDI ETCHEVERRSONMENTAL HEALTH
11 I SUBJECT:LYERWELL
Ce CC: STTREVOR JIRICEK,DIRECTOR ENV HEALTH SERVICES
COLORADO MONICA MIKA,DIRECTOR PLANNING SERVICES
KIM OGLE,PLANNING SERVICES
LEE MORRISON,WELD COUNTY ATTORNEYS OFFICE
ED DIMATTIO, COGCC
Environmental Health Services has reviewed the Lyster Family Farms injection well permitted by Use by
Special Review No. 729. It is our understanding that the facility owner has requested to increase the
number of disposal trips to an average of 20 trucks per day from the existing use of approximately two
trucks per day. Below is a summary of physical improvements that Environmental Health Services
suggests be required should approval be granted to increase the number of truck to an average of 20 per
day. Our suggestions are based upon similar existing facilities under the same ownership and with input
from Ed Dimatteo of the Colorado Oil and Gas Conservation Commission.
1. A sufficient concrete receiving pad should be constructed. The pad should be constructed to ensure
that spilled waste and wash down water is contained within the receiving area. A sump may need
to be constructed and installed.
2. Disposal of waste should only be allowed by hose-type connections. No intentional dumping of
waste water should be allowed upon the receiving pad.
3. Secondary containment structures, made of concrete, surrounding each tank or battery of tanks
should be required. The volume of each containment structures should be 150% greater than the
volume of the largest tank in the structure. Realizing the initial cost of this type of permanent
installation, it would be acceptable to allow this construction to be completed at a later date.
4. Appropriate records concerning truck trips and disposal quantities should be maintained for
inspection.
5. It is suggested a monitoring well network be installed and routine monitoring of groundwater be
conducted to detect possible contamination from the operation.
Also,below please find a listing of operational-type standards that would normally be suggested as a part
of any recommendation from this Department:
1. The facility shall be constructed and operated to ensure that contamination of soil and groundwater
does not occur.
2. A manager, knowledgeable in operating an injection well, shall be on site when the facility is
receiving waste.
3. No disposal of waste, other than Class II, as defined by the Environmental Protection Agency is
permitted. Any change from the approved Class II use would require an amendment to this Special
Review Permit.
I
4. The maximum permissible noise level shall not exceed 70 db(A), as measured according to Section
25-12-102, C.R.S.
5. Fugitive dust must be controlled on this site.
6. All chemicals stored on-site must be in locked buildings, on an impervious surface, provided
manufacturer recommendations for safe storage and handling are in accord. In any event,
manufacturer recommendations will take precedence.
7. The surfaces around the disposal area shall be constructed of an impervious material, and graded to
insure that all spilled waste is contained within the unloading pad.
8. Any analysis of waste will be forwarded to the Weld county Department of Public Health and
Environment. The Department reserves the right to require monitoring at a later date.
9. This facility must comply with the laws, standards, rules and regulations of the Air Quality Control
Commission, the Water Quality Control Commission, the Hazardous Materials and Solid Waste
Division,the Colorado Oil and Gas Conservation Commission, any other applicable agency, and all
applicable Weld County zoning laws and ordinances.
10. Any petroleum contaminated soils on the facility shall be removed and disposed in accordance with
all applicable rules and regulations.
11. The concrete receiving pad shall be cleaned at a frequency that prevents oils and other wastes from
building up on the pad.
12. During winter months,the facility shall maintain the receiving pad free of ice.
13. A safe and adequate sewage disposal system shall be available on the facility premises.
14. A safe and adequate fresh water supply shall be available on the facility premises.
If you have any questions,please don't hesitate to give me a call.
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