HEALTH CONSULTATION
GRAND TRAVERSE COMMONS/BUILDING 50 AREA
[a/k/a GRAND TRAVERSE COMMONS (GTC50)]
TRAVERSE CITY, GRAND TRAVERSE COUNTY, MICHIGAN
Table 1. Concentrations of chemicals of concern in subsurface soil samples collected from the Grand Traverse Commons/Building 50 Area property during the Phase II Environmental Site Assessment (May 2000) and the Brownfield Redevelopment Assessment (April 2001).A
| Chemical | Date(s)B | Concentration Range | No. positive detections / No. samples analyzed | Residential and Commercial I DCCC (No. samples above criterion) | Residential and Commercial I DWPCC (No. samples above criterion) | GSIPCC (No. samples above criterion) |
| Acenaphthene | 5/24/2000 | ND | 0 / 15 | 41,000 (0) | 300 (0) | 4.4 (0) |
| 4/10-12/01 | 2.6 | 1 / 12 | 41,000 (0) | 300 (0) | 4.4 (0) | |
| Aluminum | 4/10-12/01 | 876-3,970 | 12 / 12 | 50,000 (0) | 6,900D (0) | NA |
| Arsenic | 5/24/2000 | 0.23-7.5 | 15 / 15 | 7.6 (0) | 23 (0) | 16E (0) |
| 4/10-12/01 | 1-3.7 | 11 / 12 | 7.6 (0) | 23 (0) | 16E (0) | |
| Barium | 5/24/2000 | 0.78-57 | 15 / 15 | 37,000 (0) | 1,300 (0) | 290F (0) |
| 4/10-12/01 | 3.9-31.5 | 12 / 12 | 37,000 (0) | 1,300 (0) | 290F (0) | |
| benzo(a)anthracene | 5/24/2000 | 0.4 | 1 / 15 | 20 (0) | NLL | NLL |
| 4/10-12/01 | 0.043-8 | 3 / 12 | 20 (0) | NLL | NLL | |
| benzo(a)pyrene | 5/24/2000 | ND | 0 / 15 | 2 (0) | NLL | NLL |
| 4/10-12/01 | 7.6 | 1 / 12 | 2 (1) | NLL | NLL | |
| benzo(b)fluoranthene | 5/24/2000 | ND | 0 / 15 | 20 (0) | NLL | NLL |
| 4/10-12/01 | 0.04-7.6 | 3 / 12 | 20 (0) | NLL | NLL | |
| bis(2-ethylhexyl)phthalate | 4/10-12/01 | 0.16-18G | 3 / 12 | 2,800 (0) | NLL | NLL |
| Carbazole | 4/10-12/01 | 18G | 1 / 12 | 530 (0) | 9.4 (1) | 1.1 (1) |
| Chromium | 5/24/2000 | 0.66-7.1 | 15 / 15 | 2,500 (0) | 30 (0) | 18D (0) |
| 4/10-12/01 | 1.8-6.3 | 12 / 12 | 2,500 (0) | 30 (0) | 18D (0) | |
| Copper | 5/24/2000 | 0.77-23 | 15 / 15 | 20,000 (0) | 5,800 (0) | 52F (0) |
| 4/10-12/01 | 2-5.1 | 12 / 12 | 20,000 (0) | 5,800 (0) | 52F (0) | |
| Cyanide | 4/10-12/01 | 0.1 | 1 / 12 | 12 (0) | 4 (0) | 0.4 (0) |
| dibenzo(a,h)anthracene | 5/24/2000 | ND | 0 / 15 | 2 (0) | NLL | NLL |
| 4/10-12/01 | 2.3 | 1 / 12 | 2 (1) | NLL | NLL | |
| Fluoranthene | 5/24/2000 | 0.79-1.8 | 2 / 15 | 46,000 (0) | 730 (0) | 5.5 (0) |
| 4/10-12/01 | 0.066-16 | 3 / 12 | 46,000 (0) | 730 (0) | 5.5 (1) | |
| Fluorine | 5/24/2000 | ND | 0 / 15 | 27,000 (0) | 390 (0) | 5.3 (0) |
| 4/10-12/01 | 2.4 | 1 / 12 | 27,000 (0) | 390 (0) | 5.3 (0) | |
| indeno(1,2,3-cd)pyrene | 5/24/2000 | ND | 0 / 15 | 20 (0) | NLL | NLL |
| 4/10-12/01 | 5.5 | 1 / 12 | 20 (0) | NLL | NLL | |
| Iron | 4/10-12/01 | 1,600-6,970 | 12 / 12 | 160,000 (0) | 12,000D (0) | NA |
| Lead | 5/24/2000 | 3.7-72 | 5 / 15 | 400 (0) | 700 (0) | 1,800F (0) |
| 4/10-12/01 | 1.2-128 | 12 / 12 | 400 (0) | 700 (0) | 1,800F (0) | |
| Magnesium | 4/10-12/01 | 350-16,200 | 12 / 12 | 1,000,000H (0) | 8,000 (5) | NA |
| Manganese | 4/10-12/01 | 42.3-449 | 12 / 12 | 25,000 (0) | 440D (1) | 440D (1) |
| Mercury | 5/24/2000 | 0.12I | 2 / 15 | 160 (0) | 1.7 (0) | 100 (0) |
| 4/10-12/01 | 0.07-0.1 | 2 / 12 | 160 (0) | 1.7 (0) | 100 (0) | |
| Naphthalene | 5/24/2000 | 0.9-3.4 | 2 / 15 | 16,000 (0) | 35 (0) | 0.87 (2) |
| 4/10-12/01 | 4.7 | 1 / 12 | 16,000 (0) | 35 (0) | 0.87 (1) | |
| Nickel | 4/10-12/01 | 2.1-8.2 | 12 / 12 | 40,000 (0) | 100 (0) | 54F (0) |
| Phenanthrene | 5/24/2000 | 0.59 | 1 / 15 | 1,600 (0) | 56 (0) | 2.3 (0) |
| 4/10-12/01 | 0.097-17 | 3 / 12 | 1,600 (0) | 56 (0) | 2.3 (1) | |
| Silver | 5/24/2000 | ND | 0 / 15 | 2,500 (0) | 4.5 (0) | 500 (0) |
| 4/10-12/01 | 0.19-0.39 | 4 / 12 | 2,500 (0) | 4.5 (0) | 500 (0) | |
| Thallium | 4/10-12/01 | 0.96 | 1 / 12 | 35 (0) | 2.3 (0) | 4.2 (0) |
| Vanadium | 4/10-12/01 | 2.5-8.3 | 12 / 12 | 750 (0) | 72 (0) | 190 (0) |
| Zinc | 5/24/2000 | 6.2-260 | 15 / 15 | 170,000 (0) | 2,400 (0) | 120F (1) |
| 4/10-12/01 | 6-23 | 12 / 12 | 170,000 (0) | 2,400 (0) | 120F (0) |
References: MDEQ 2001b, The Traverse Group 2000
Acronyms:
DCC Direct Contact Criteria
DWPC Drinking Water Protection Criteria
GSIPC Groundwater-Surface Water Interface Protection Criteria
ND not detected
NLL not likely to leach into groundwater
NA not available
Notes:
A. All concentrations are in ppm.
B. The Traverse Group sampled May 24, 2000. MDEQ sampled April 10-12, 2001.
C. Based on the most recent (2000) MDEQ criteria update.
D. The criterion defaults to the background value for Michigan soil, which is higher than the health-based criterion (MDNR 1991, 1993, MDEQ 2000).
E. Computed to protect surface water used as a drinking water source.
F. The GSIPC (derived from the GSI) was calculated assuming a typical hardness for surface water in the Northern Lower Peninsula of Michigan of 100 ppm (MDEQ 2000). The hardness of the surface water at the GTC50 property at the time of sampling was not reported.
G. The 18 ppm detections for bis(2-ethylhexyl)phthalate and carbazole were from a sample with an elevated limit of detection greater than the criterion. Therefore, the compound may be present at up to the limit of detection.
H. Using health effect information to calculate this criterion yields a result larger than 1,000,000,000 ppb or 1,000,000 ppm, that is, above 100%. The MDEQ reduces the value by default to 1,000,000,000 ppb, 1,000,000 ppm or 100% (MDEQ 2000). No real concentration can therefore exceed the criterion.
I. Both samples of mercury were detected at equal concentrations.
Table 2. Concentrations of chemicals of
concern in surface soil samples collected from the Grand Traverse Commons/Building
50 Area property during the Brownfield Redevelopment Assessment (April 2001).A
| Chemical | Concentration Range | No. positive detections / No. samples analyzed | Residential and Commercial I DCCB (No. samples above criterion) | Residential and Commercial I DWPCB (No. samples above criterion) | GSIPCB (No. samples above criterion) |
| Acenaphthene | 0.11-8 | 2 / 30 | 41,000 (0) | 300 (0) | 4.4 (1) |
| Aluminum | 1,130-4,650 | 30 / 30 | 50,000 (0) | 6,900C (0) | NA |
| Arsenic | 1.3-13.4 | 29 / 30 | 7.6 (1) | 23 (0) | 16D (0) |
| Barium | 10.9-431 | 30 / 30 | 37,000 (0) | 1,300 (0) | 290E (1) |
| benzo(a)anthracene | 0.08-51 | 20 / 30 | 20 (1) | NLL | NLL |
| benzo(a)pyrene | 0.088-44 | 20 / 30 | 2 (2) | NLL | NLL |
| benzo(b)fluoranthene | 0.1-33 | 20 / 30 | 20 (1) | NLL | NLL |
| bis(2-ethylhexyl)phthalate | 0.076-5.3 | 8 / 30 | 2,800 (0) | NLL | NLL |
| carbazole | 0.09-16 | 5 / 30 | 530 (0) | 9.4 (1) | 1.1 (2) |
| chromium | 1.8-88.3 | 30 / 30 | 2,500 (0) | 30 (10) | 18C (12) |
| copper | 3.2-38.3 | 30 / 30 | 20,000 (0) | 5,800 (0) | 52E (0) |
| cyanide | 0.15-1 | 20 / 30 | 12 (0) | 4 (0) | 0.4 (15) |
| dibenzo(a,h)anthracene | 0.18-9.8 | 2 / 30 | 2 (1) | NLL | NLL |
| fluoranthene | 0.041-110 | 24 / 30 | 46,000 (0) | 730 (0) | 5.5 (2) |
| fluorene | 0.091-12 | 3 / 30 | 27,000 (0) | 390 (0) | 5.3 (1) |
| indeno(1,2,3-cd)pyrene | 0.089-23 | 11 / 30 | 20 (1) | NLL | NLL |
| iron | 2,450-11,400 | 30 / 30 | 160,000 (0) | 12,000C (0) | NA |
| lead | 4.3-2,750 | 30 / 30 | 400 (6) | 700 (3) | 1,800E (1) |
| magnesium | 300-31,100 | 30 / 30 | 1,000,000F (0) | 8,000 (4) | NA |
| manganese | 79.6-401 | 30 / 30 | 25,000 (0) | 440C (0) | 440C (0) |
| mercury | 0.06-0.2 | 24 / 30 | 160 (0) | 1.7 (0) | 100 (0) |
| naphthalene | 0.04-15 | 3 / 30 | 16,000 (0) | 35 (0) | 0.87 (1) |
| nickel | 2.2-16.6 | 30 / 30 | 40,000 (0) | 100 (0) | 54E (0) |
| phenanthrene | 0.14-94 | 19 / 30 | 1,600 (0) | 56 (1) | 2.3 (3) |
| silver | 0.16-1.1 | 30 / 30 | 2,500 (0) | 4.5 (0) | 500 (0) |
| thallium | ND | 0 / 30 | 35 (0) | 2.3 (0) | 4.2 (0) |
| vanadium | 3.1-13.6 | 30 / 30 | 750 (0) | 72 (0) | 190 (0) |
| zinc | 14.6-489 | 30 / 30 | 170,000 (0) | 2,400 (0) | 120E (6) |
Reference: MDEQ 2001b
Acronyms:
DCC Direct Contact Criteria
DWPC Drinking Water Protection Criteria
GSIPC Groundwater-Surface Water Interface Protection Criteria
ND not detected
NLL not likely to leach into groundwater
NA not available
Notes:
A. All concentrations are in ppm.
B. Based on the most recent (2000) MDEQ criteria update.
C. The criterion defaults to the background value for Michigan soil, which is higher than the health-based criterion (MDNR 1991, 1993, MDEQ 2000).
D. Computed to protect surface water used as a drinking water source.
E. The GSIPC (derived from the GSI) was calculated assuming a typical hardness for surface water in the Northern Lower Peninsula of Michigan of 100 ppm (MDEQ 2000). The hardness of the surface water at the GTC50 property at the time of sampling was not reported.
F. Using health effect information to calculate this criterion yields a result larger than 1,000,000,000 ppb or 1,000,000 ppm, that is, above 100%. The MDEQ reduces the value by default to 1,000,000,000 ppb, 1,000,000 ppm or 100% (MDEQ 2000). No real concentration can therefore exceed the criterion.
Table 3. Concentrations of chemicals of
concern in groundwater samples collected from temporary monitoring wells on
the Grand Traverse Commons/Building 50 Area property during the Brownfield Redevelopment
Assessment (April 2001).A
| Chemical | Concentration Range | No. positive detections / No. samples analyzed | DWCB, MCLC, or SMCLC (No. samples above criterion) | GSIB (No. samples above criterion) |
| acenaphthene | ND | 0 / 7 | 1,300 (0) | 19 (0) |
| aluminum | 185-9,610 | 7 / 7 | 50D (7) | NA |
| arsenic | 3.7-25.6 | 5 / 7 | 50 (0) | 50E (0) |
| barium | 16.8-306 | 7 / 7 | 2,000 (0) | 440F (0) |
| benzo(a)anthracene | ND | 0 / 7 | 2.1 (0) | NA |
| benzo(a)pyrene | ND | 0 / 7 | 5 (0) | NA |
| benzo(b)fluoranthene | ND | 0 / 7 | 2 (0) | NA |
| bis(2-ethylhexyl)phthalate | 3-49 | 5 / 7 | 6 (4) | 32 (2) |
| carbazole | ND | 0 / 7 | 85 (0) | 10 (0) |
| chromium | 3.4-748 | 6 / 7 | 100 (3) | 11 (4) |
| copper | 1.1-429 | 7 / 7 | 1,000 (0) | 9F (5) |
| cyanide | 1.2-3.6 | 6 / 7 | 200 (0) | 20 (0) |
| dibenzo(a,h)anthracene | ND | 0 / 7 | 5 (0) | NA |
| fluoranthene | ND | 0 / 7 | 210 (0) | 1.6 (0) |
| fluorene | ND | 0 / 7 | 880 (0) | 12 (0) |
| indeno(1,2,3-cd)pyrene | ND | 0 / 7 | 5 (0) | NA |
| iron | 184-121,000 | 7 / 7 | 300D (6) | NA |
| lead | 3.5-11.3 | 5 / 7 | 4 (4) | 10F (1) |
| magnesium | 14,000-50,200 | 7 / 7 | 400,000 (0) | NA |
| manganese | 53.5-933 | 7 / 7 | 50D (7) | 3,600H (0) |
| mercury | 0.1-0.15 | 6 / 7 | 2 (0) | 0.0013 (6) |
| naphthalene | ND | 0 / 7 | 520 (0) | 13 (0) |
| nickel | 1.3-301 | 7 / 7 | 100 (1) | 52F (4) |
| phenanthrene | ND | 0 / 7 | 52 (0) | 5 (0) |
| silver | 3.4 | 1 / 7 | 34 (0) | 0.2G (1) |
| thallium | 8.2 | 1 / 7 | 2 (1) | 1.2E (1) |
| vanadium | 2.3-17.6 | 6 / 7 | 4.5 (5) | 12 (2) |
| zinc | 6.9-9,440 | 7 / 7 | 2,400 (1) | 120F (4) |
Reference: MDEQ 2001b
Acronymns:
DWC Drinking Water Criteria
GSI Groundwater-Surface Water Interface Criteria
MCL U.S. EPA Safe Drinking Water Act Maximum Contaminant Level
NA not available
ND not detected
SMCL U.S. EPA Safe Drinking Water Act Secondary Maximum Contaminant Level
Notes:
A. All concentrations are in ppb.
B. Based on the most recent (2000) MDEQ criteria update.
C. Based on the most recent (1996) U.S. EPA levels.
D. The DWC is the SMCL or other comparison value based on non-health related considerations such as appearance, taste, and odor (MDEQ 2000, U.S. EPA 1996).
E. GSI based on protection of drinking water supplies.
F. The GSI was calculated assuming a typical hardness for surface water in the Northern Lower Peninsula of Michigan of 100 ppm (MDEQ 2000). The hardness of the surface water at the GTC50 property at the time of sampling was not reported.
G. Calculated criterion is lower than Target Detection Limit (TDL) for analysis, and reverts to TDL.
H. Value updated by MDEQ Surface Water Quality Division 10/24/2001.
Table 4. Concentrations of chemicals of
concern in sediment samples collected from water bodies on and near the Grand
Traverse Commons/Building 50 Area property during the Brownfield Redevelopment
Assessment (April 2001).A
| Chemical | Concentration Range | No. positive detections / No. samples analyzed | Residential and Commercial I DCCB (No. samples above criterion) |
| acenaphthene | ND | 0 / 4 | 41,000 (0) |
| aluminum | 450-2,100 | 4 / 4 | 50,000 (0) |
| arsenic | 1.4-4.8 | 3 / 4 | 7.6 (0) |
| barium | 6.7-27.7 | 4 / 4 | 37,000 (0) |
| benzo(a)anthracene | 0.24 | 1 / 4 | 20 (0) |
| benzo(a)pyrene | 0.3 | 1 / 4 | 2 (0) |
| benzo(b)fluroanthene | 0.28 | 1 / 4 | 20 (0) |
| bis(2-ethylhexyl)phthalate | 0.072-1.7 | 2 / 4 | 2,800 (0) |
| carbazole | ND | 0 / 4 | 530 (0) |
| chromium | 1.1-6.3 | 4 / 4 | 2,500 (0) |
| copper | 1-6.4 | 4 / 4 | 20,000 (0) |
| cyanide | ND | 0 / 4 | 12 (0) |
| dibenzo(a,h)anthracene | ND | 0 / 4 | 2 (0) |
| fluoranthene | 0.045-0.52 | 3 / 4 | 46,000 (0) |
| fluorene | ND | 0 / 4 | 27,000 (0) |
| indeno(1,2,3-cd)pyrene | 0.25 | 1 / 4 | 20 (0) |
| iron | 2,060-8,060 | 4 / 4 | 160,000 (0) |
| lead | 1.9-3.4 | 4 / 4 | 400 (0) |
| magnesium | 1,340-3,960 | 4 / 4 | 1,000,000C (0) |
| manganese | 41.8-135 | 4 / 4 | 25,000 (0) |
| mercury | 0.07 | 1 / 4 | 160 (0) |
| naphthalene | 0.044 | 1 / 4 | 16,000 (0) |
| nickel | 0.9-4.9 | 4 / 4 | 4,000 (0) |
| phenanthrene | 0.22 | 1 / 4 | 1,600 (0) |
| silver | 0.26-0.47 | 3 / 4 | 2,500 (0) |
| thallium | ND | 0 / 4 | 35 (0) |
| vanadium | 1.7-6.3 | 4 / 4 | 750 (0) |
| zinc | 5.3-84.7 | 4 / 4 | 170,000 (0) |
Reference: MDEQ 2001b
Acronym:
DCC Direct Contact Criteria
ND not detected
Notes:
A. All concentrations are in ppm.
B. Based on the most recent (2000) MDEQ criteria update.
C. Using health effect information to calculate this criterion yields a result larger than1,000,000,000 ppb or 1,000,000 ppm, that is, above 100%. The MDEQ reduces the value by default to 1,000,000,000 ppb, 1,000,000 ppm or 100% (MDEQ 2000). No real concentration can therefore exceed the criterion.
Table 5. Concentrations of chemicals of
concern in surface water samples collected from water bodies on and near the
Grand Traverse Commons/Building 50 Area property during the Brownfield Redevelopment
Assessment (April 2001).A
| Chemical | Concentration Range | No. positive detections / No. samples analyzed | AWQVB (No. samples above criterion) |
| acenaphthene | ND | 0 / 4 | 19 |
| aluminum | 238-781 | 4 / 4 | NA |
| arsenic | 3.2-4.4 | 3 / 4 | 50C (0) |
| barium | 31.1-46.4 | 4 / 4 | 440D (0) |
| benzo(a)anthracene | ND | 0 / 4 | NA |
| benzo(a)pyrene | ND | 0 / 4 | NA |
| benzo(b)fluoranthene | ND | 0 / 4 | NA |
| bis(2-ethylhexyl)phthalate | 2-7 | 2 / 4 | 32 (0) |
| carbazole | ND | 0 / 4 | 10 (0) |
| chromium | 1.9 | 1 / 4 | 11 (0) |
| copper | 1.3-3.7 | 4 / 4 | 9D (0) |
| cyanide | 1.1-1.6 | 3 / 4 | 20 (0) |
| dibenzo(a,h)anthracene | ND | 0 / 4 | NA |
| fluoranthene | ND | 0 / 4 | 1.6 (0) |
| fluorene | ND | 0 / 4 | 12 (0) |
| indeno(1,2,3-cd)pyrene | ND | 0 / 4 | NA |
| iron | 1,360-2,490 | 4 / 4 | NA |
| lead | 4-5.2 | 3 / 4 | 10D (0) |
| magnesium | 9,450-14,000 | 4 / 4 | NA |
| manganese | 46.9-99 | 4 / 4 | 3,600E (0) |
| mercury | ND | 0 / 4 | 0.0013 (0) |
| naphthalene | ND | 0 / 4 | 13 (0) |
| nickel | 2 | 1 / 4 | 52D (0) |
| phenanthrene | ND | 0 / 4 | 5 (0) |
| silver | ND | 0 / 4 | 0.2 (0) |
| thallium | ND | 0 / 4 | 1.2C (0) |
| vanadium | 1.4 | 1 / 4 | 12 (0) |
| zinc | 22-33.8 | 4 / 4 | 120D (0) |
Reference: MDEQ 2001b
Acronyms:
AWQV MDEQ Ambient Water Quality Value
NA not available
ND not detected
Notes:
A. All concentrations are in ppb.
B. Based on the most recent (1999) AWQV update.
C. Calculated for protection of drinking water supplies (MDEQ 2000).
D. The AWQV (equal to the GSI) was calculated assuming a typical hardness for surface water in the Northern Lower Peninsula of Michigan of 100 ppm (MDEQ 2000). The hardness of the surface water at the GTC50 property at the time of sampling was not reported.
E. Value updated by MDEQ Surface Water Quality Division 10/24/2001.
