ENFORCE23263

• Permit No: M1977210
• IBM Index Class Name: Enforcement
• Doc Date: 4/20/1990
• Doc Name: FN M-77-210 SNYDER QUARRY SEDIMENT BASIN
• From: OBERING WURTH & ASSOCIATES
• To: MLRD
• Violation No.: MV1989015
• Media Type: D
• Archive: No

3
Letter: MLRD
Re: File No. M-77-210
4/20/90
Project No. 89002
The Important features of this pond are a need to have it in just the
right location to fntercept the runoff and to have a sufficient volume to
handle the runoff. Any alteration in the design of the pond could
compromise the effectiveness of this pond to controlling sedimeni~.
In short, we feel we have made all necessary attempts to keep as
much of the pond inside the "approximate permit boundary" and still
maintain the effectiveness of the pond. To alter the dee:igned
characteristics significantly could result in a less effective control.
Therefore, we Peel the minimal amount of disturbance beyond the
"approximate permit boundary" line is necessary and would urge the
Division and the Board to accept Lhe design as presented.
QUESTION NO. 4, TOPSOIL SALVAGE. Heffner.
RESPONSE: Virtually sll the pond will be excavated into already
disturbed land. where excavation will occur on virgin land, what little
soil is present wilt be saved. However, keep in mind that the undisturbed
areas have quite steep slopes and the amount of soil present is very small
to none. The topsoil will be used in reclaiming the land around they pond
that is not needed for pond maintenance. Stockpiling oP the soil will only
be done until the pond is completely constructed.
QUESTION NO. 6, SEDIMENT BASIN RECLAMATION. Heffner
RESPONSE: Please refer to pages 19 and 20 in the October 1989
Corrective Action Plan document for a description of the reclamation of
the sediment basin area. In essence, areas around the pond not needed
for maintenance will be revegetated upon completion of the pond. Once
the pond is no longer needed the remaining area will be reclaimed
according to the description in the CAP.
QUESTION N0. 6, CONTRIBUTING AREA DISCREPANCY. OWA.
RESPONSE: The areas used for drainage calculations and sediment load
calculations are correct as shown. The difference between the two areas
of 1.77 acres occurs since sediment load calculations were completed only
on those areas in active mining or in reclamation. The 1.77 acres
represents the portion oP the contributing drainage basin that is in its
natural undisturbed condition. Sediment loading from the natural
undisturbed area will be minimal and was therefore not included in the
sediment pond design.