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DEPARTMENT OF PLANNING SERVICES
PHONE(303)356-4000,EXT.4400
91510th STREET
WI GREELEY,COLORADO 80631
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COLORADO
April 26, 1991
Roggen Disposal
Attention: Mike Cervi
P.O. Box 5714
Denver, Colorado 80217
Subject: Retention pond, USR #481 located in part of Section 33, Township 3
North and part ofSection 4, Township 2 North, all in Range 62 West
of the 6th P.M. , Weld County, Colorado.
Dear Mr. Cervi:
Thank you for your letter of April 15. The Department of Planning Services'
staff and the Environmental Protection Services' staff have reviewed your request
to construct a third retention pond, 4.36 acres in size, on the property
described as USR #481. The Planning Department staff has determined that the
4.36 acre pond would not be considered a material deviation from the approved
plans of USR #481.
This determination is based on compliance with the following:
1. Building permits being applied for and approved.
2. Bench marks of 1 inch intervals being added to the concrete pad for a
permanent pond measuring device.
3. All construction on the pond will be supervised by a• responsible
registered professional engineer.
4. A complete as-constructed plat with an engineer's certification that the
pond is constructed as proposed and has an infiltration rate of less than
or equal to 1 x 10 -7 cm/sec as specified in the proposal, is submitted to
the Environmental Protection Services.
5. Prior to the use of the newly constructed pond, the Environmental
Protection Service shall conduct an on-site inspection and provide you
with a letter of authorization.
-pi_014 11
°I17-0114
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April 26, 1991
Page 2
6. Upon completion and approval of the newly constructed pond, the water from
Pond C is to be transferred to the new pond again.
7. Upon completion of the new pond and the transfer of water, the facility is
not to use Ponds A or C until sufficient certification and documentation
assuring the integrity of those ponds has been submitted to and approved
in writing by the Environmental Protection Services.
Please call or write me if you have any questions.
Sincerely,
eit A. c u t
Current Planner
pc: case file
Wes Potter
Board of County Commissioners
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Keith Schuett, Current Planner April 26, 1991
Wilk To Date
Ed Stoner, Lead Combination Inspector E
COLORADO From
Roggen Disposal USR-481
Subject:
A grading permit will be required for the construction of this pond. This
permit will not be issued, however, until the Weld County Health Department
has approved the design.
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To Department of Planning Svc_ Date •
COLORADO From Wes Potter, Director, Environmental Protection Svcs.
subject: Roggen Dis op sal, Request- for Expansion
Staff has reviewed the proposal submitted by Roggen Disposal to expand the
existing facility. Special use permit for the facility authorizes the
construction of four (4) ponds. At present there are two (2) ponds constructed
on the site. Since the permit clearly authorizes four (4) ponds the proposal is
consistent with the existing permit. The staff approves of the proposal as
submitted with the condition that all construction of the ponds will be
supervised by a responsible, Registered Professional Engineer. Mr. Cervi will
be responsible to submit a complete as-constructed plat with an engineers'
certification that the pond is constructed as proposed and has an infiltration
rate of less than or equal to 1 x 10 -7 cm/sec as specified in the proposal.
Upon completion and approval of the new constructed pond, the water from pond C
is to be transferred to the new pond and pond C is to be evaluated by a
registered professional engineer to certify its integrity before it is used.
Upon completion of the new pond and the transfer of water, the facility is not
to use ponds A or C until sufficient certification has been submitted and
approved by the department assuring the integrity of those ponds.
WP/lam-59
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