Resource Concern	Rank 4	Rank 3	Rank 2	Rank 1
LONG - TERM STORAGE (180 days or more)
Steel, glass - lined (liquid - tight design, above ground) OR	Designed and installed according to accepted engineering standards and spec - ifications. Properly maintained.	Designed and installed according to accepted engineering standards and spec - ifications. Not maintained.	Leaking tank on Medium - textured soils (silt loam, loam).	Leaking tank on coarse - textured soils (sands, sandy loam). Water table to fractured bedrock shallower than 20 feet.
Concrete stave (liquid - tight design) OR	Designed and installed according to accepted engineering standards and spec - ifications. Properly maintained.	Designed and installed according to accepted engineering standards and spec - ifications. Not maintained.	Concrete cracked, Medium - textured soils (silt loam, loam). Water table deeper than 20 feet.	Concrete cracked, coarse - textured soils (sands, sandy loam). Water table or fractured bedrock shallower than 20 feet.
Poured concrete (liquid - tight design) OR	Designed and installed according to accepted standards and spec - ifications. Properly maintained.	Designed and installed according to accepted engineering standards and spec - ifications. Not maintained.	Concrete cracked, Medium - textured soils (silt loam, loam). Water table deeper than 20 feet.	Concrete cracked, coarse - textured soils (sands, sandy loam). Water table or fractured bedrock shallower than 20 feet.
Earthen waste storage pit (below ground)		Designed and installed according to accepted engineering standards and spec - ifications. Properly maintained.	Not designed to engineering standards. Constructed in medium- or fine - textured dense materials (silt loam, loam, clay loams, silty clay). Water table deeper than 20 feet. Earthen lining eroding.	Not designed to engineering standards. Constructed in coarse - textured materials (sands, sandy loam). Fractured bedrock or water table shallower than 20 feet. More than 10 years old. Earthen lining perforated.
SHORT - TERM STORAGE (usually 30-90 days; in some cases, up to 180 days)
Stacked in field (on soil base)			Stacked on high ground. Medium- or fine - textured soils (silt loam, loam, clay loams, silty clay). Water table is deeper than 20 feet.	Stacked on high ground. Coarse - textured soils (sands, sandy loam). Fractured bedrock or water table shallower than 20 feet.
Stacked in yard*	Covered concrete yard with curbs, gutters and settling basin.	Concrete yard with curbs and gutters. Grass filter strips installed and maintained.	Earthen yard with medium- or fine - textured soils (silt loam, loam, clay loams, silty clay). Water table deeper than 20 feet.	Stacked on high ground. Coarse - textured soils (sands, sandy loam). Fractured bedrock or water table shallower than 20 feet.
Water - tight structure designed to accepted engineering standards and spec - ifications	Designed and installed according to engineering standards. All liquids retained.	Designed and installed according to engineering standards on medium- and fine - textured soils (silt loam, loam, clay loams, silty clay). Water table deeper than 20 feet.	Designed and installed according to engineering standards on coarse - textured soils (sands, sandy loam). Water table or fractured bedrock shallower than 20 feet.	Designed and installed according to engineering standards. Not properly maintained. Water treatment and diversion and terrace structures allowed to deteriorate.
Stacked in open housing	Building has concrete floor, protected from surface water runoff. Adequate bedding provided.	Building has earthen or concrete floor on medium- or fine - textured soils (silt loam, loam, clay loams, silty clay), protected from surface water runoff. Water table deeper than 20 feet.	Building has earthen or concrete floor on medium- or fine - textured soils (silt loam, loam, clay loams, silty clay), subject to surface water runoff. Water table or fractured bedrock shallower than 20 feet.	Building has earthen floor or coarse - textured soils (sands, sandy loam), subject to surface water runoff. Water table or fractured bedrock shallower than 20 feet.
LOCATION
Location of livestock waste storage in relation to drinking water well	Manure stack or earthen waste storage pit more than 250 feet downslope from well. Manure storage structure (liquid tight) more than 100 feet downslope from well.	Manure stack or earthen waste storage pit more than 250 feet upslope from well. Manure storage structure (liquid tight) more than 100 feet upslope from well.	Manure stack or earthen waste storage pit less than 250 feet downslope from well. Manure storage structure (liquid tight) less than 100 feet* downslope from well.	Manure stack or earthen waste storage pit less than 250 feet upslope from well. Manure storage structure (liquid tight) less than 100 feet* upslope from well.

July 16, 1998
Dennis Hoffman, Project Leader
Steve Dagitz, Webmaster