2008-05-15_REVISION - C1981008 ‎(2)‎

• Permit No: C1981008
• IBM Index Class Name: Revision
• Doc Date: 5/15/2008
• Doc Name: Review Memo
• From: Dan Mathews
• To: Marcia Talvitie
• Type & Sequence: TR57
• Email Name: DTM
• Media Type: D
• Archive: No

11. The topsoil stripping procedures for the non-prime farmland areas north of BB road are
somewhat unclear, in that narrative on page 2.04.9-23 describes salvage of Lift A, followed
by salvage of a mixed lift composed of subsoil and bench 1 overburden. Topsoil
Replacement Map (2.05.4-4), however, indicates that a single "mixed soil" lift would be
replaced over "Bench 1 subsoil". Please clarify this apparent discrepancy, specify the
horizons that will constitute Lift A, and describe how the bottom of Lift A and bottom
of Lift B will be defined for site foremen and equipment operators in the field.
12. We have some questions regarding information presented on the Soil Baseline Map (Map
2.04.9-1).
a) In several locations along the northern and western perimeter of the permit boundary
there are clusters of what appear to be random numbers and associated short line segments.
These appear to be extraneous, erroneous inclusions, but result in some clutter and confusion
on the map. Please revise the map to eliminate the extraneous numbers and figures.
b) 98E is the dominant soil map unit in the Morgan property within the permit area, with
small areas of 98D and NST immediately adjacent to 2700 Road. However, there are
several small delineated areas on the property, where it is not clear what map unit is
represented (i.e. 0.16 ac., 4.58 ac., 3.06 ac., and 4.13 ac. parcels). Please revise the map to
ensure that all units depicted are properly identified.
c) Three soil survey boundaries are delineated on the map, 1988, 1996, and 1999. There is a
substantial acreage located immediately south of the Morgan property portion of the permit
area, with map unit boundaries depicted, although the area appears to be located outside any
of the soil survey boundaries. Please revise the map to clarify the survey upon which the
soil mapping in this area was based.
13. Page 2.04.9-24 through 2.04.9-28 includes soil balance narrative and related Tables 2.04.9-5
and 2.04.9-6. New Map 2.04.9-2 "Topsoil Balance Map As Of February 2008" was
submitted in addition to the narrative and tables. We have the following questions regarding
this information.
a) Map 2.04.9-2 depicts current status (location, type of soil, and volume) of topsoil
stockpiles. Location of any additional proposed soil stockpiles should also be provided on a
map (either amended Map 2.04.9-2) or an additional permit area map. Also projected
maximum volume of each existing and proposed stockpile should also be indicated (either
on tables or maps). Please submit the requested information, or provide reference if the
correct information is included on approved permit area maps or tables.
b) Table 2.04.9-6 indicates that for the Morgan property that has not yet been disturbed, an
average 40 inch thickness of subsoil material will be salvaged (referred to as "Lift B +
Suitable Subsoil" on Table 2.04.9-6). Please address what differentiates Lift B material
from "suitable subsoil" material, and how the bottom of Lift B is defined for the purposes of
field operations. Presumably, the "suitable subsoil" is essentially synonymous with "Bench
1"overburden, which is the unconsolidated deposits immediately underlying the native
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