MA0032 SOIL INTERPRETATIONS RECORD BROCKTON SERIES
MLRA(S): 144A, 149B
REV. RJS, 12-94
TYPIC HUMAQUEPTS, SANDY, MIXED, MESIC
The Brockton series consists of very deep, very poorly drained soils on uplands. They formed in glacial till. Typically these soils have a very dark brown organic surface layer 3 inches thick. The subsurface layer from 3 to 14 inches is a mottled black sandy loam. The upper substratum from 14 to 20 inches is a gray gravelly loamy sand. The lower substratum from 20 to 65 inches is a very firm mottled gray gravelly loamy sand. Slopes range from 0 to 3 percent.
LANDSCAPE AND CLIMATE PROPERTIES
ANNUAL AIR TEMP. (F) | FROST FREE DAYS | ANNUAL PRECIPITATION | ELEVATION (FT) | DRAINAGE CLASS | SLOPE (PCT) |
45-50 | 160-220 | 40-50 | 0-1000 | VP | 0-3 |
ESTIMATED SOIL PROPERTIES (A)
DEPTH (IN.) | USDA TEXTURE | UNIFIED | AASHTO | FRACT. >10 IN |
FRACT. 3-10 IN |
CLAY (PCT) |
0-14 | SL,FSL,LS | SM,ML,OL | A-1,A-2,A-4 | 0 | 0-10 | 2-8 |
0-14 | GR-SL,GR-FSL,GR-LS | SM,ML,OL | A-1,A-2,A-4 | 0 | 0-15 | 2-8 |
0-14 | MK-SL,MK-FSL,MK-LS | SM,ML,OL | A-1,A-2,A-4 | 0 | 0-10 | 2-8 |
14-17 | GR-LS,LCOS | SM,SP-SM | A-1,A-2 | 0 | 0-20 | 1-5 |
17-65 | LS,GR-LCOS,SL | SM,SP-SM | A-1,A-2 | 0 | 0-20 | 1-5 |
DEPTH (IN.) |
LIQUID LIMIT | PLAS- TICITY INDEX | MOIST BULK
DENSITY (G/CM3) |
PERME- ABILITY (IN/HR) |
AVAILABLE WATER CAPACITY (IN/IN) |
SOIL REACTION (PH) |
0-14 | 0-14 | NP | 1.10-1.30 | 2.0-6.0 | 0.10-0.23 | 3.6-6.0 |
0-14 | 0-14 | NP | 1.20-1.30 | 2.0-6.0 | 0.04-0.20 | 3.6-6.0 |
0-14 | 0-14 | NP | 1.00-1.20 | 2.0-6.0 | 0.12-0.25 | 3.6-6.0 |
14-17 | 0-14 | NP | 1.30-1.60 | 2.0-6.0 | 0.04-0.07 | 3.6-6.0 |
17-65 | 0-14 | NP | 1.60-2.00 | 0.06-0.2 | 0.02-0.04 | 3.6-6.0 |
DEPTH (IN.) |
ORGANIC MATTER (PCT) |
SHRINK- SWELL POTENTIAL |
EROSION FACTORS (K, Kf, T) |
CORROSIVITY STEEL/CONCRETE |
0-14 | 2-8 | LOW | .24, .24, 2 | HIGH/HIGH |
0-14 | 2-8 | LOW | .17, .24, 2 | |
0-14 | 5-10 | LOW | .24, .24, 2 | |
14-17 | LOW | .17, .20 | ||
17-65 | LOW | .17, .20 |
FLOODING FREQUENCY |
HIGH WATER
TABLE DEPTH (ft)/ KIND/ MONTHS |
BEDROCK DEPTH (IN) |
HYDOLOGIC GROUP |
POTEN- TENTIAL FROST ACTION |
NONE | +1 to -1.0/ PERCHED/ SEP-JUN | >60 | D | MODERATE |