Appendix_6_-_Geosyntec_Soil_Test_Results_Memo.pdf

19321 U.S. Highway 19 North, Building C, Suite 200 Clearwater FL 33764

PH 813.792.4820

www.geosyntec.com

Technica l Memorandum Date: 24 March 2020

To: Josie Benwell, M.S., ENV SP – Pinellas County Public Works, Stormwater and Vegetation Division

From: Mark Ellard, PE, CFM, D.WRE, ENV SP - Geosyntec Consultants

Subject: Soil Characterization Testing Results Summary M10 Starkey SMF Retrofit Design Pinellas County, Florida

This memorandum summarizes the result of soil characterization activities pertaining to the M10 Starkey Stormwater Management Facility (SMF) Retrofit. Geosyntec Consultants was tasked by the Pinellas County Stormwater and Vegetation Division to perform this work. The work was performed under the Pinellas County Professional Engineering and Environmental Consulting Services Contract 156-0095-CN.

Soil borings were performed on October 25, 2019 from 5 locations. These locations were chosen to collect soils considered representative of the areas that will likely be excavated as part of the project. The characterization would allow for evaluation of the potential for soil reuse.

• Three locations (P-1, P-2, and P-3) were collected form the uplands in the proposed storage expansion excavation area. Composite samples were collected from each location from the approximate depth interval of land surface to 7’ depth (the approximate surface water table).

• Two locations (W-1 and W-2) were collected from the outfall ditch downstream of the wetland mitigation area in the approximate location of the proposed weir structure.

Composite samples were collected from each location from the approximate depth interval of land surface to 3’ depth (the approximate surface water table).

The approximate locations are shown on Figure 1.

The soil characterization results were screened against the “Dredge Sediment Testing Decision Tree” and “Pinellas County Solid Waste Dredged Material Testing Guidelines” documentation provided to Geosyntec by the County to determine any restrictions on the reuse of these excavated soils on other sites. This guidance documentation reflecting project specific results markups is included as Attachment A.

Soil Characterization Testing Results Summary M10 Starkey SMF Retrofit Design Pinellas County, Florida 24 March 2020

The following evaluation and analysis were performed on the samples based on the guidance:

• First an initial soil hydrometer and grain size analysis was performed on the samples to determine the gradation of the soils. Per the County guidance, if the soils have less than 10% fines, the soils are suitable for any reuse purpose and no further analysis is necessary.

o Analysis of 4 of the 5 soil samples (P-1 21%, P-3 21%, W-1 11%, W-2 19%) resulted in fines in excess of 10%, therefore additional chemical analysis was performed to further characterize the soils to determine appropriate reuse methods or if landfill disposal was necessary.

• The soil samples were then subjected to the following laboratory chemical analysis methods in accordance with the guidance documents:

o Toxicity Characteristic Leaching Procedure (TCLP) volatiles, semi-volatiles, and metals (Pinellas County Solid Waste Dredged Material Testing Guidelines). The TCLP results were compared to the TCLP maximum contaminant levels criteria (40 CFR 261.24) and indicated no detections of volatile or semi-volatile constituents. Barium, chromium, and lead were detected in several samples, but below the referenced maximum contaminant levels. These results are summarized on Table 1.

o Synthetic Precipitate Leaching Procedure (SPLP) semi-volatiles (PAHs) and metals (Dredge Sediment Testing Decision Tree). The SPLP results were compared to groundwater and surface water criteria to evaluate the potential impacts from soil leaching (62-777, FAC cleanup levels and 62-302.550, FAC Class III criteria). This comparison indicated no detections of semi-volatile PAHs, but several detections of metals including arsenic, barium, cadmium, chromium, copper, lead, nickel, selenium, and zinc. In all 5 samples several of the metals, chromium, copper, lead, nickel, and zinc, exceeded one or more of the criteria. These results are summarized on Table 2.

o Total (non-leaching) semi-volatiles (PAHs), metals, and TRPH (Dredge Sediment Testing Decision Tree). The Total results indicated some detections of semi-volatile PAHs and TRPH, but all were below the Residential Direct Exposure (RDE) and Leachability criteria (Table II, 62-777, FAC) included in the “Dredge Sediment Testing Decision Tree” guidance. Numerous metals were also detected in all the samples including arsenic, barium, cadmium, chromium, selenium, copper, lead, nickel, selenium, zinc, and mercury. Chromium, selenium, and mercury were found above the freshwater leachability criteria but below the RDE

Pinellas County, Florida 24 March 2020 criteria in soils samples from both the proposed excavation expansion area (P-3) and the ditch (W-1 and W-2). Mercury was found also above the marine surface water leachability criteria in one of the 2 ditch samples (W-1). These results are summarized on Table 3.

Laboratory analysis was performed by Eurofins/Test America laboratories. The laboratory reports with chain of custody are included as Attachment B.

Based on the foregoing and the “Dredge Sediment Testing Decision Tree” guidance, soils from the sampling areas do not exhibit RDE exceedances but do exhibit leachability criteria exceedances. Based on the decision tree, the excavated soils may be candidates for reuse but may not be permanently placed where runoff can reach freshwater or marine waters (i.e., uplands adjacent to freshwater or marine surface waters).

With regard to the “Pinellas County Solid Waste Dredged Material Testing Guidelines”, the TCLP results indicated no exceedances. As such, it appears it would meet acceptance criteria at the Pinellas County Solid Waste/Bridgeway Acres Facility.

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Infrastructure: Pinellas County, 2018 Parcels, Roads: Pinellas County, 2010 Contours: Pinellas County, 2017 Aerial Imagery: ESRI

0 15075

Feet

Legend

Site

2-foot Contour

Parcel

Drainage Easement

Right-of-Way

!. Control Structure

!. Inlet

Culvert

Proposed Weir Locatio Composite soils samples at tw

(2) cations to a depth of 3 feet belowland surfac

M10 Starkey SMF Retrofit

Proposed Site Composite soil samples at three

(3) locations to a depth of ' below land surface.

Figure

W-1

W-2

P-1 P-2

P-3

Volatiles by 8260B TCLP

1,1-Dichloroethene mg/l 0.0026 U 0.0026 U 0.0026 U 0.0026 U 0.0026 U - -

1,2-Dichloroethane mg/l 0.0031 U 0.0031 U 0.0031 U 0.0031 U 0.0031 U 0.5

1,4-Dichlorobenzene mg/l 0.0022 U 0.0022 U 0.0022 U 0.0022 U 0.0022 U 75

2-Butanone (MEK) mg/l 0.032 U 0.032 U 0.032 U 0.032 U 0.032 U - -

Benzene mg/l 0.0025 U 0.0025 U 0.0025 U 0.0025 U 0.0025 U 0.5

Carbon tetrachloride mg/l 0.0023 U 0.0023 U 0.0023 U 0.0023 U 0.0023 U 0.5

Chlorobenzene mg/l 0.0027 U 0.0027 U 0.0027 U 0.0027 U 0.0027 U 100

Chloroform mg/l 0.0029 U 0.0029 U 0.0029 U 0.0029 U 0.0029 U 6

Tetrachloroethene mg/l 0.0050 U 0.0050 U 0.0050 U 0.0050 U 0.0050 U 0.7

Trichloroethene mg/l 0.0061 U 0.0061 U 0.0061 U 0.0061 U 0.0061 U 0.5

Vinyl chloride mg/l 0.0026 U 0.0026 U 0.0026 U 0.0026 U 0.0026 U 0.2

Semivolatiles by 8270D TCLP

1,4-Dichlorobenzene mg/l 0.0026 U 0.0026 U 0.0024 U 0.0024 U 0.0024 U 7.5

2,4,5-Trichlorophenol mg/l 0.0020 U 0.0020 U 0.0018 U 0.0018 U 0.0018 U 400

2,4,6-Trichlorophenol mg/l 0.0024 U 0.0024 U 0.0022 U 0.0022 U 0.0022 U 2

2,4-Dinitrotoluene mg/l 0.0036 U 0.0036 U 0.0033 U 0.0033 U 0.0033 U 0.13

2-Methylphenol mg/l 0.0022 U 0.0022 U 0.0020 U 0.0020 U 0.0020 U - -

3 & 4 Methylphenol mg/l 0.0021 U 0.0021 U 0.0019 U 0.0019 U 0.0019 U - -

Hexachlorobenzene mg/l 0.0013 U 0.0013 U 0.0012 U 0.0012 U 0.0012 U 0.13

Hexachlorobutadiene mg/l 0.0043 U 0.0043 U 0.0039 U 0.0039 U 0.0039 U 0.5

Hexachloroethane mg/l 0.0023 U 0.0023 U 0.0021 U 0.0021 U 0.0021 U 3

Nitrobenzene mg/l 0.0012 U 0.0012 U 0.0011 U 0.0011 U 0.0011 U 2

Pentachlorophenol mg/l 0.0063 U 0.0063 U 0.0059 U 0.0059 U 0.0059 U 100

Pyridine mg/l 0.0074 U 0.0074 U 0.0068 U 0.0068 U 0.0068 U 5

GC Semivolatiles by 8081B TCLP

Chlordane (technical) mg/l 0.00015 U 0.00015 U 0.00014 U 0.00015 U 0.00015 U 0.03

Endrin mg/l 0.000016 U 0.000015 U 0.000014 U 0.000015 U 0.000016 U 0.02 gamma-BHC (Lindane) mg/l 0.0000075 U 0.0000072 U 0.0000069 U 0.0000072 U 0.0000075 U 0.4

Heptachlor mg/l 0.000011 U 0.000010 U 0.0000097 U 0.000010 U 0.000011 U 0.008

Methoxychlor mg/l 0.0000095 U 0.0000091 U 0.0000088 U 0.0000091 U 0.0000095 U 10

Toxaphene mg/l 0.00046 U 0.00044 U 0.00043 U 0.00044 U 0.00046 U 0.5

GC Semivolatiles by 8151A TCLP

2,4-D mg/l 0.0035 U 0.0035 U 0.0037 U 0.0035 U 0.0034 U 10

Pentachlorophenol mg/l 0.0035 U 0.0035 U 0.0037 U 0.0035 U 0.0034 U 100

Silvex (2,4,5-TP) mg/l 0.0058 U 0.0058 U 0.0062 U 0.0058 U 0.0057 U - -

Metals by 6010D TCLP

Arsenic mg/l 0.0093 U 0.0093 U 0.0093 U 0.0093 U 0.0093 U 5

Barium mg/l 0.35 0.36 0.15 0.24 0.19 100

Cadmium mg/l 0.0023 U 0.0023 U 0.0023 U 0.0023 U 0.0023 U 1

Chromium mg/l 0.081 0.11 0.0055 U 0.0068 I 0.0055 U 5

Lead mg/l 0.17 0.15 0.073 0.041I 0.059 5

Selenium mg/l 0.025 U 0.025 U 0.025 U 0.025 U 0.025 U 1

Silver mg/l 0.0073 U 0.0073 U 0.0073 U 0.0073 U 0.0073 U 5

Metals by 7470A TCLP

Mercury mg/l 0.00050 U 0.00050 U 0.00050 U 0.00050 U 0.00050 U 0.2

Notes:

Red text indicates detection. Results exceeds TCLP MCL Criteria mg/l - milligrams per liter ug/l - micrograms per liter

I - The reported value is between the laboratory method detection limit and the laboratory practical quantitation limit.

U - Indicates that the compound was analyzed for but not detected.

Parameter Reporting Units P-1 P-2

TABLE 1 - SOIL SAMPLE TCLP RESULTS

M10 Starkey SMF Retrofit Design

Pinellas County, Florida

P-3 W-1 W-2

TCLP MCL (40CFR

261.24) mg/l

Groundwater Criteria ug/l

Freshwater Surface Water Criteria ug/l

Marine Surface Water Criteria ug/l

Groundwater of Low Yield / Poor Quality Criteria ug/l

Predominantly Fresh Waters ug/l

Predominantly Marine Waters ug/l

Semivolatiles by 8270D SIM

Acenaphthylene ug/L 0.081 U Q 0.081 U Q 0.081 U Q 0.081 U Q 0.081 U Q 210 * 62-302 annual average * 62-302 annual average 2100 130 130

Benzo[a]anthracene ug/L 0.050 U Q 0.050 U Q 0.050 U Q 0.050 U Q 0.050 U Q 0.05 * 62-302 annual average * 62-302 annual average 0.5 0.014 0.014

Benzo[a]pyrene ug/L 0.073 U Q 0.073 U Q 0.073 U Q 0.073 U Q 0.073 U Q 0.2 * 62-302 annual average * 62-302 annual average 2 0.0014 0.0014

Benzo[b]fluoranthene ug/L 0.050 U Q 0.050 U Q 0.050 U Q 0.050 U Q 0.050 U Q 0.05 * 62-302 annual average * 62-302 annual average 0.5 0.014 0.014

Benzo[g,h,i]perylene ug/L 0.070 U Q 0.070 U Q 0.070 U Q 0.070 U Q 0.070 U Q J3 210 * 62-302 annual average * 62-302 annual average 2100 - - - -

Benzo[k]fluoranthene ug/L 0.083 U Q 0.083 U Q 0.083 U Q 0.083 U Q 0.083 U Q 0.5 * 62-302 annual average * 62-302 annual average 5 0.14 0.14

Chrysene ug/L 0.068 U Q 0.068 U Q 0.068 U Q 0.068 U Q 0.068 U Q 4.8 * 62-302 annual average * 62-302 annual average 48 1.4 1.4

Dibenz(a,h)anthracene ug/L 0.077 U Q J3 0.077 U Q J3 0.077 U Q J3 0.077 U Q J3 0.077 U Q J3 0.005 * 62-302 annual average * 62-302 annual average 0.05 0.0014 0.0014

Indeno[1,2,3-cd]pyrene ug/L 0.050 U Q 0.050 U Q 0.050 U Q 0.050 U Q 0.050 U Q J3 0.05 * 62-302 annual average * 62-302 annual average 0.5 0.014 0.014

Phenanthrene ug/L 0.86 U Q 0.86 U Q 0.86 U Q 0.86 U Q 0.86 U Q 210 * 62-302 annual average * 62-302 annual average 2100 - - - -

ADDITION OF PAHs * ug/L

ALL NON-

DETECT

ALL NON-

DETECT

ALL NON-

DETECT

ALL NON-

DETECT

ALL NON-

DETECT

0.031 *

(old 62-302, FAC criteria)

0.031 *

(old 62-302, FAC criteria)

Metals by 6010D SPLP

Arsenic ug/l 2.4 I 4.4 I 4.5 I 6.7 I 8.4 I 10 (primary) 50 62-302 50 62-302 100 50 50

Barium ug/l 120 110 87 110 100 2000 (primary) NA NA 20000 - - - -

Cadmium ug/l 0.46 U 0.46 U 0.65 I 0.48 I 0.46 U 5 (primary) 62-302 f,g 9.3 62-302 g 50 Cd ≤e(0.7409[lnH]-4.719) 8.8

Chromium ug/l 94 110 93 62 71 100 (primary) 11 h 50 h 1000 11 50

Copper ug/l 8.0 I 11 6.8 I 23 20 1000 (secondary) 62-302 f,g 2.9 62-302 g 10000 Cu ≤e(0.8545[lnH]-1.702) 3.7

Lead ug/l 42 37 31 70 62 15 (primary) 62-302 f,g 8.5 62-302 g 150 Pb ≤e(1.273 [lnH] -4.705) 8.5

Nickel ug/l 27 22 26 16 5 15 100 (primary) 62-302 f,g 8.3 62-302 g 1000 Ni ≤ e(0.846[lnH]+0.0584) 8.3

Selenium ug/l 5.0 U 6.3 I 5.0 U 5.0 U 5.0 U 50 (primary) 5 62-302 71 62-302 500 5 71

Silver ug/l 1.5 U 1.5 U 1.5 U 1.5 U 1.5 U 100 (secondary) 0.07 0.4 toxicity criteria g 1000 0.07 Minimum criteria 62-302.500(1)(c), FAC

Zinc ug/l 57 45 46 92 92 5000 (secondary) 62-302 f,g 86 62-302 g 50000 Zn ≤ e(0.8473[lnH]+0.884) 86

Metals by 7470A SPLP

Mercury ug/l 0.50 U 0.50 U 0.50 U 0.50 U 0.50 U 2 0.012 62-302 0.025 62-302 20 0.012 0.025

Notes:

mg/l - milligrams per liter ug/l - micrograms per liter Indicates result exceeds one or more GSWCTLs or Class III Surface Water Criteria

I - The reported value is between the laboratory method detection limit and the laboratory practical quantitation limit.

U - Indicates that the compound was analyzed for but not detected.

J3 - Estimated value; value may not be accurate. Spike recovery or RPD outside of criteria.

Q - Sample held beyond the accepted holding time.

f = Hardness-dependent per Chapter 62-302, F.A.C.

h = In the absence of concentration data specific for the III and VI valence states of chromium, total chromium concentrations in surface water should be compared to the criteria for Chromium (hexavalent).

NA = Not available at time of Rule adoption.

* = There are no surface water standards for these individual polycyclic aromatic hydrocarbons. Per Chapter 62-302, F.A.C., the surface water criterion for Polycyclic Aromatic Hydrocarbons (PAHs) shall apply to the total concentration of Acenaphthylene, Benzo(a)anthracene, Benzo(a)pyrene, Benzo(fluoranthene, Benzo(g,i,h)perylene, Benzo(k)fluoranthene, Chrysene, Dibenzo(a,h,)anthracene, Indeno(1,2,3-cd)pyrene, and Phenanthrene.

g = Criteria for these metals are measured as total recoverable metal. However, they may be applied as dissolved metals when, as part of a permit application, a dissolved metals translator has been established according to the procedures described in the document, “Guidance for Establishing a Metals Translator”, Florida Department of Environmental Protection, December 17, 2001.

Soil Leaching Results Compared to Class III and Class III-Limited Criteria Annotated Rule 62-302.530, FAC (proposed revised 4/19)

Soil Leaching Results Compared to Groundwater and Surface Water Claenup Levels (GSWCTLs)

62-777, FAC

P-1 P-2 P-3 W-1 W-2Parameter Reporting

Units

TABLE 2 - SOIL SAMPLE SPLP RESULTS

Pinellas County, Florida

P-1 P-2 P-3 W-1 W-2 Residential Commercial / Industrial Groundwater Freshwater Surface

Water Marine Surface Water

Groundwater of Low Yield/ Poor Quality

Semivolatiles by 8270D SIM

Acenaphthene mg/kg 0.0017 U 0.0017 U 0.0017 U 0.0017 U 0.0016 U 2400 20000 2.1 0.3 0.3 21

Acenaphthylene mg/kg 0.0017 U 0.0018 U 0.0017 U 0.0046 I 0.0028 I 1800 20000 27 NA NA 270

Anthracene mg/kg 0.00071 U 0.00073 U 0.00072 U 0.011 0.0047 I 21000 300000 2500 0.4 0.4 25000

Benzo[a]anthracene mg/kg 0.0017 I 0.0018 U 0.0018 U 0.068 0.04 # # 0.8 NA NA 8

Benzo[a]pyrene mg/kg 0.0028 I 0.0019 U 0.0031 I 0.1 0.066 0.1 0.7 8 NA NA 80

Benzo[b]fluoranthene mg/kg 0.0057 I 0.0019 U 0.0067 I 0.17 0.11 # # 2.4 NA NA 24

Benzo[g,h,i]perylene mg/kg 0.0019 I 0.0020 U 0.0023 I 0.076 0.041 2500 52000 32000 NA NA 320000

Benzo[k]fluoranthene mg/kg 0.0021 U 0.0022 U 0.0022 I 0.055 0.04 # # 24 NA NA 240

Chrysene mg/kg 0.0031 I 0.0019 U 0.0036 I 0.095 0.063 # # 77 NA NA 770

Dibenz(a,h)anthracene mg/kg 0.0019 U 0.0019 U 0.0019 U 0.02 0.0088 # # 0.7 NA NA 7

Fluoranthene mg/kg 0.0055 U 0.0057 U 0.0056 U 0.13 0.08 3200 59000 1200 1.3 1.3 12000

Fluorene mg/kg 0.0040 U 0.0041 U 0.0040 U 0.0040 U 0.0038 U 2600 33000 160 17 17 1600

Indeno[1,2,3-cd]pyrene mg/kg 0.0017 U 0.0018 U 0.0018 I 0.063 0.031 # # 6.6 NA NA 66

1-Methylnaphthalene mg/kg 0.0020 U 0.0021 U 0.0020 U 0.0020 U 0.0019 U 200 1800 3.1 10 10 31

2-Methylnaphthalene mg/kg 0.0035 U 0.0036 U 0.0035 U 0.0035 U 0.0034 U 210 2100 8.5 9.1 9.1 85

Naphthalene mg/kg 0.0036 U 0.0038 U 0.0037 U 0.0036 U 0.0035 U 55 300 1.2 2.2 2.2 12

Phenanthrene mg/kg 0.0053 U 0.0055 U 0.0054 U 0.036 0.021 2200 36000 250 NA NA 2500

Pyrene mg/kg 0.0037 I 0.0022 I 0.0039 I 0.11 0.069 2400 45000 880 1.3 1.3 8800

Metals by 6010D TOTAL

Arsenic mg/kg 0.13 I 0.13 I 0.34 I 1.3 1.1 2.1 12 *** *** *** ***

Barium mg/kg 4.5 4.3 4.8 12 8.8 120** 130000 1600 NA NA 16000

Cadmium mg/kg 0.037 I 0.034 U 0.042 I 0.11 I 0.087 I 82 1700 7.5 NA 14 75

Chromium mg/kg 3.5 4.1 4.4 5.7 4.6 210 470 38 4.2 19 380

Copper mg/kg 0.69 I 0.55 I 0.49 I 6.1 3.9 150** 89000 *** NA *** ***

Lead mg/kg 2.4 1.7 2 13 8.6 400 1400 *** NA *** ***

Nickel mg/kg 0.90 I 0.83 I 1.3 I 1.9 I 1.5 I 340** 35000 130 NA 11 1300

Selenium mg/kg 0.46 U 0.45 U 0.45 U 0.72 I 0.42 I 440 11000 5.2 0.5 7.4 52

Silver mg/kg 0.24 U 0.23 U 0.23 U 0.22 U 0.22 U 410 8200 17 0.01 0.06 170

Zinc mg/kg 2.1 I 1.7 I 2.2 I 16 11 26000 630000 *** NA *** ***

Metals by 7470A TOTAL

Mercury mg/kg 0.0080 U Q 0.0084 U Q 0.0082 U Q 0.040 Q 0.025 Q 3 17 2.1 0.01 0.03 21

FL-PRO

Total Petroleum Hydrocarbons (C8-C40) mg/kg 16 I 40 U Q 18 I 79 44 460 2700 340 340 340 3400

Notes:

Red values indicate detections Indicates result exceeds one or more SCTLs mg/kg - milligrams per kilogram ug/kg - micrograms per kilogram

I - The reported value is between the laboratory method detection limit and the laboratory practical quantitation limit.

U - Indicates that the compound was analyzed for but not detected.

Q - Sample held beyond the accepted holding time.

** Direct exposure value based on acute toxicity considerations. This criterion is applicable in scenarios where children might be exposed to soils (e.g. residences, schools, playgrounds)

*** Leachability values may be derived using the SPLP Test to calculate site-specific SCTLs or may be determined using TCLP in the event oily wastes are present.

NA = Not available at time of rule adoption.

Pinellas County, Florida

Soil Cleanup Target Level (SCTLs) per Ch. 62-777, FAC

Soil Sample

# = Site concentrations for carcinogenic polycyclic aromatic hydrocarbons must be converted to Benzo(a)pyrene equivalents before comparison with the appropriate direct exposure SCTL for Benzo(a)pyrene using the approach described in the February 2005 'Final Technical Report: Development of Cleanup Target Levels (CTLs) for Chapter 62-777, F.A.C.

Parameter Reporting Units

Direct Exposure (mg/kg) Leachability (mg/kg)

TABLE 3 - SOIL SAMPLE TOTAL RESULTS

M10 Starkey SMF Retrofit Design

Technical Report: Development of Cleanup Target Levels (CTLs) For Chapter 62‐777, F.A.C., FDEP 2005

Pinellas County, Florida 24 March 2020

ATTACHMENT A

Dredge Sediment Testing Decision Tree

Request sediment cores be taken to 2 feet below proposed dredge depth at worst case and representative locations.

Request sediment grain size analysis be done at 6 inch intervals (or 1 foot if no stratification) along the cores.

Evaluate results of grain size analysis for each sample interval: Does sample contain less than 10% fines?

Yes, the sample contains less than 10% fines. No, the sample contains more than 10% fines.

No further analysis is required.

These sediments may be used for any authorized fill project.

Further analysis is needed.

Go to Page 2.

Sediment Sampling and Appropriate Disposal – Decision Trees

Continue to Page 3

Sediments with more than 10% fines require further analysis. Testing guidance documents can be found at: http://www.dep.state.fl.us/labs/library

Always request:

RCRA metals (Arsenic, Barium, Cadmium, Chromium, Lead, Mercury, Selenium, Silver)

Zinc, Copper, Nickel

Polycyclic Aromatic Hydrocarbons (PAH’s)

Total Recoverable Petroleum Hydrocarbons (TRPH’s)

Note: NEVER substitute oil & grease analysis for PAH analysis.

In freshwater sediments, or if sediments are to be stored next to a freshwater body, also request:

Surface water hardness in mg/L (Calcium Carbonate hardness equivalent)

Synthetic Precipitate Leaching Procedure (SPLP) for Cadmium, Chromium, Copper, Lead, Nickel, and Zinc

Check results against the Soil Cleanup Target Level (SCTL) table (excerpt from Table II, 62- 777, F.A.C. – attached). Note any exceedances for Residential Direct Exposure (RDE) Criteria, Commercial Direct Exposure (CDE) Criteria, leachability to groundwater, leachability to freshwater surface water, and leachability to marine surface water.

If one or more of the carcinogenic PAH’s is detected in the sample at a concentration equal to or higher than the Method Detection Limit (MDL), use the Benzo(a)pyrene BaP) Toxicity Equivalence Conversion spreadsheet to determine if there are any exceedances of the BAP Equivalent SCTL.

Are the sediments from a freshwater body or will dredged sediments be stored adjacent to a freshwater body?

Yes No

Run hardness based calculations using the excel spreadsheet. Check hardness based freshwater standard results against the values provided by the SPLP results.

Note any exceedances.

Proceed to Page 4 for disposal options.

Does any result exceed Residential Direct Exposure (RDE) limits or default leachability criteria listed in Table II of 62-777, F.A.C.?

Yes No

The dredged and dewatered sediments may be used for any authorized fill project or sold as fill if appropriate (muck or mucky sediment is generally not an appropriate fill material) or may be stored in uplands.

Only leachability exceedances.

There are RDE limit exceedances.

What are the exceedances? (RDE or Leachability) PAH’s must be added together and compared to 62-302.530(56)(a), F.A.C.

Sediments must be disposed of at an appropriate disposal facility (Class I, lined landfill).

Applicant should call disposal facilities to determine what their maximum contaminant levels are. Facility usually requires copies of lab results.

Groundwater, marine surface water, or fresh surface water leachability exceedances?

(Could exceed more than one)

Groundwater Marine surface water Fresh surface water

May not be permanently placed where leachate would affect groundwater. May require Class I Disposal.

May not be permanently placed where runoff can reach marine waters (i.e., uplands adjacent to marine surface waters)

May not be permanently placed where runoff can reach fresh waters (i.e., uplands adjacent to fresh surface waters)

The dredged and dewatered sediments may be used for g y any authorized fill project or sold as fill if appropriate y p j pp (muck or mucky sediment is generally not an ( y g y appropriate fill material) or may be stored in uplands.

Excerpt from Table II, 62-377, F.A.C.

Residential

Commercial/ Industrial

(mg/kg) (mg/kg) (mg/kg) (mg/kg) (mg/kg) (mg/kg) Arsenic NOCAS 2.1 12 *** *** *** *** -Carcinogen -Cardiovascular -Skin Barium (soluble salts) (b)

7440-39-3

120** 130000 1600 NA NA 16000

-Cardiovascular

Cadmium (b,c,h)

7440-43-9

82 1700 7.5 NA 14 75

-Carcinogen -Kidney

Chromium (total) (b,g)

NOCAS

210 470 38 4.2 19 380

-Carcinogen

Copper 7440-50-8 150** 89000 *** NA *** *** -Gastrointestinal Lead (d)

7439-92-1

400 1400 *** NA *** ***

-Neurological

Mercury (c)

7439-97-6 3 17 2.1 0.01 0.03 21

-Neurological

Nickel (b,c)

7440-02-0 340** 35000 130 NA 11 1300 -Body Weight

Selenium (b,c)

7782-49-2 440 11000 5.2 0.5 7.4 52

-Hair Loss -Neurological -Skin

Silver (b)

7440-22-4 410 8200 17 0.01 0.06 170

-Skin

TRPH NOCAS 460 2700 340 340 340 3400 -Multiple Endpoints Mixed Contaminants Zinc (b,c)

7440-66-6

26000 630000 *** NA *** ***

-Blood

Leachability Based on

Groundwater of Low Yield/ Poor Quality

Target Organs/Systems or Effects†

Contaminants CAS#s

Direct Exposure Leachability Based on

Groundwater Criteria

Leachability Based on

Freshwater Surface Water

Criteria

Leachability Based on Marine Surface Water

Criteria

** Direct exposure value based on acute toxicity considerations.

*** Leachability values may be derived using the SPLP Test to calculate site-specific SCTLs or may be determined using TCLP in the event oily wastes are present.

(b) = Leachability values derived from USEPA Soil Screening Guidance (1996). These values were derived assuming soil pH 6.8.

These leachability values are dependent upon both the metal concentration in soil and soil characteristics. Thus, if site-specific soil characteristics are different than the defaults, these leachability values may not apply. If this is the case, site-specific leachability values should be derived using methods such as TCLP or SPLP.

(c) = Phytotoxicity must be considered.

(d) = Residential direct exposure value from USEPA Revised Interm Soil Guidance for CERCLA Sites and RCRA Corrective Action Facilities. OSWER Directive 9355.4-12 (1994). The industrial direct exposure value was derived using methodologies outlined in USEPA 'Recommendations of the Technical Review Workgroup for Lead for an Interim Approach to Assessing Risks Associated with Adult Exposures to Lead in Soil', December 1996; and in 'Blood Lead Concentrations of U.S. Adult Females: Summary Statistics from Phases 1 and 2 of the NHANES III', March 2002.

(g) = Unless concentrations for both chromium III and VI are known, total chromium concentrations should by compared with direct exposure SCTLs for chromium VI.

(h) = Residential chronic SCTL for cadmium should be used as a not-to-exceed value because the residential chronic SCTL for cadmium is indistinguishable from the SCTL based on acute toxicity.

62-302.530(56)(a), F.A.C.

Parameter Units Class I Class II Class III:

Fresh

Class III:

Marine

Class IV Class V

(56) (a) Polycyclic Aro-matic Hydrocar-bons (PAHs).

Total of: Ace-naphthylene;

Ben-zo(a)anthracene;

Benzo(a)pyrene;

Benzo(b)fluoran-thene; Benzo- (ghi)perylene;

Benzo(k)fluorant hene; Chrysene;

Dibenzo- (a,h)anthracene;

Indeno(1,2,3-cd)pyrene; and Phenanthrene

Micrograms/L < 0.0028 annual avg.

< 0.031 annual avg.

< 0.031annual avg.

< 0.031 annual avg.

Class III:

Fresh

For disposal at Pinellas County Solid Waste/Bridgeway Acres:

Full TCLP for metals and organics (see table below for parameters and MCLs) The material must pass the paint filter test

Generator must provide Pinellas County with a description of the source of the material, previous use of site, location of site, nature of possible contaminants, and method of treatment (if applicable) If the material is too wet, there will be a $100.00 surcharge added to the load and the material will be rejected and not allowed to dump in the future.

Material must be clean and free of debris, waste, stone, etc.

Dredged material must have less than 10% organic material content and it is the Generators responsibility to provide the County supportive documentation upon request If Pinellas County determines that the material is acceptable for cover, a 48 hr notice must be provided to the County prior to delivery, including the anticipated volume to be delivered, and the schedule (frequency and volume per load) for delivery If material arriving onsite does not meet the criteria of this policy, a disposal fee of $37.50 per ton (non-negotiable) will be charged and/or rejection of the material Loads with strong/objectionable odors may also be subject to a $100 surcharge per load for the cost to immediately cover.

Janie Armstrong, Solid Waste Compliance Inspector, will be reviewing lab results and scheduling incoming loads to solid waste:

3095 114th Avenue North St. Petersburg, FL 33716 Phone (727) 464-7728 Fax (727) 464-7559 jaarmstrong@pinellascounty.org

* Important Note: Test results must be less than or equal to 1 year old at the time of submittal to Solid Waste for review.

Dredged material must have less than 10% organic material c

Pinellas County, Florida 24 March 2020

ATTACHMENT B

ANALYTICAL REPORT

Eurofins TestAmerica, Burlington 30 Community Drive Suite 11 South Burlington, VT 05403 Tel: (802)660-1990

Laboratory Job ID: 200-51218-1 Client Project/Site: M10 Starkey, Pinellas County

For:

Geosyntec Consultants, Inc.

3525 West Lake Mary Blvd Suite 306 Lake Mary, Florida 32746

Attn: Erin Reed

Authorized for release by:

11/5/2019 9:43:58 AM

Jess Hornsby, Project Manager II (813)280-8340 jess.hornsby@testamericainc.com

The test results in this report meet all 2003 NELAC and 2009 TNI requirements for accredited parameters, exceptions are noted in this report. This report may not be reproduced except in full, and with written approval from the laboratory. For questions please contact the Project Manager at the e-mail address or telephone number listed on this page.

This report has been electronically signed and authorized by the signatory. Electronic signature is intended to be the legally binding equivalent of a traditionally handwritten signature.

Results relate only to the items tested and the sample(s) as received by the laboratory.

https://secure.testamericainc.com/TotalAccess/login.aspx http://www.testamericainc.com/services-we-offer/ask-the-expert http://www.testamericainc.com mailto:jess.hornsby@testamericainc.com

Table of Contents

Client: Geosyntec Consultants, Inc.

Project/Site: M10 Starkey, Pinellas County

Laboratory Job ID: 200-51218-1

Eurofins TestAmerica, Burlington

11/5/2019

Cover Page

Table of Contents

Sample Summary

Detection Summary

Case Narrative

Definitions/Glossary

Client Sample Results

QC Association Summary

Lab Chronicle

Method Summary

Certification Summary

Chain of Custody

Field Data Sheets

Receipt Checklists

Sample Summary Job ID: 200-51218-1Client: Geosyntec Consultants, Inc.

Project/Site: M10 Starkey, Pinellas County

Lab Sample ID Client Sample ID ReceivedCollectedMatrix Asset ID 200-51218-1 P-1 Solid 10/25/19 08:30 10/28/19 12:49

200-51218-2 P-2 Solid 10/25/19 09:20 10/28/19 12:49

200-51218-3 P-3 Solid 10/25/19 10:00 10/28/19 12:49

200-51218-4 W-1 Solid 10/25/19 11:10 10/28/19 12:49

200-51218-5 W-2 Solid 10/25/19 11:25 10/28/19 12:49

Eurofins TestAmerica, Burlington

Page 3 of 32 11/5/2019

Detection Summary

Project/Site: M10 Starkey, Pinellas County

Client Sample ID: P-1 Lab Sample ID: 200-51218-1

Total Organic Matter

PQL

MDLAnalyte Result Qualifier Unit Dil Fac D Method Prep Type Total/NA10.72 D2974

Gravel % Total/NA10.00 D422

Sieve Size 3 inch - Percent Finer % Passing Total/NA1100 D422

Sand % Total/NA179 D422

Sieve Size 2 inch - Percent Finer % Passing Total/NA1100 D422

Coarse Sand % Total/NA10.10 D422

Sieve Size 1.5 inch - Percent Finer % Passing Total/NA1100 D422

Medium Sand % Total/NA13.0 D422

Sieve Size 1 inch - Percent Finer % Passing Total/NA1100 D422

Fine Sand % Total/NA176 D422

Sieve Size 0.75 inch - Percent Finer % Passing Total/NA1100 D422

Sieve Size 0.375 inch - Percent Finer % Passing Total/NA1100 D422

Silt % Total/NA116 D422

Clay % Total/NA14.6 D422

Sieve Size #4 - Percent Finer % Passing Total/NA1100 D422

Sieve Size #10 - Percent Finer % Passing Total/NA1100 D422

Sieve Size #20 - Percent Finer % Passing Total/NA1100 D422

Sieve Size #40 - Percent Finer % Passing Total/NA197 D422

Sieve Size #60 - Percent Finer % Passing Total/NA186 D422

Sieve Size #80 - Percent Finer % Passing Total/NA170 D422

Sieve Size #100 - Percent Finer % Passing Total/NA152 D422

Sieve Size #200 - Percent Finer % Passing Total/NA121 D422

Hydrometer Reading 1 - Percent Finer % Passing Total/NA15.1 D422

Hydrometer Reading 2 - Percent Finer % Passing Total/NA14.6 D422

Hydrometer Reading 3 - Percent Finer % Passing Total/NA14.6 D422

Hydrometer Reading 4 - Percent Finer % Passing Total/NA14.6 D422

Hydrometer Reading 5 - Percent Finer % Passing Total/NA14.6 D422

Hydrometer Reading 6 - Percent Finer % Passing Total/NA14.1 D422

Hydrometer Reading 7 - Percent Finer % Passing Total/NA13.6 D422

Client Sample ID: P-2 Lab Sample ID: 200-51218-2

Total Organic Matter

PQL

MDLAnalyte Result Qualifier Unit Dil Fac D Method Prep Type Total/NA10.66 D2974

Gravel % Total/NA10.00 D422

Sieve Size 3 inch - Percent Finer % Passing Total/NA1100 D422

Sand % Total/NA194 D422

Sieve Size 2 inch - Percent Finer % Passing Total/NA1100 D422

Coarse Sand % Total/NA10.00 D422

Sieve Size 1.5 inch - Percent Finer % Passing Total/NA1100 D422

Medium Sand % Total/NA13.2 D422

Sieve Size 1 inch - Percent Finer % Passing Total/NA1100 D422

Fine Sand % Total/NA191 D422

Sieve Size 0.75 inch - Percent Finer % Passing Total/NA1100 D422

Sieve Size 0.375 inch - Percent Finer % Passing Total/NA1100 D422

Silt % Total/NA11.8 D422

Clay % Total/NA14.5 D422

Sieve Size #4 - Percent Finer % Passing Total/NA1100 D422

Sieve Size #10 - Percent Finer % Passing Total/NA1100 D422

Sieve Size #20 - Percent Finer % Passing Total/NA1100 D422

Sieve Size #40 - Percent Finer % Passing Total/NA197 D422

Eurofins TestAmerica, Burlington

This Detection Summary does not include radiochemical test results.

Page 4 of 32 11/5/2019

Project/Site: M10 Starkey, Pinellas County

Client Sample ID: P-2 (Continued) Lab Sample ID: 200-51218-2

Sieve Size #60 - Percent Finer

PQL

% Passing

MDLAnalyte Result Qualifier Unit Dil Fac D Method Prep Type Total/NA186 D422

Sieve Size #80 - Percent Finer % Passing Total/NA171 D422

Sieve Size #100 - Percent Finer % Passing Total/NA150 D422

Sieve Size #200 - Percent Finer % Passing Total/NA16.3 D422

Hydrometer Reading 1 - Percent Finer % Passing Total/NA14.9 D422

Hydrometer Reading 2 - Percent Finer % Passing Total/NA14.5 D422

Hydrometer Reading 3 - Percent Finer % Passing Total/NA14.5 D422

Hydrometer Reading 4 - Percent Finer % Passing Total/NA14.5 D422

Hydrometer Reading 5 - Percent Finer % Passing Total/NA14.5 D422

Hydrometer Reading 6 - Percent Finer % Passing Total/NA14.0 D422

Hydrometer Reading 7 - Percent Finer % Passing Total/NA13.5 D422

Client Sample ID: P-3 Lab Sample ID: 200-51218-3

Total Organic Matter

PQL

MDLAnalyte Result Qualifier Unit Dil Fac D Method Prep Type Total/NA10.69 D2974

Gravel % Total/NA11.9 D422

Sieve Size 3 inch - Percent Finer % Passing Total/NA1100 D422

Sand % Total/NA177 D422

Sieve Size 2 inch - Percent Finer % Passing Total/NA1100 D422

Coarse Sand % Total/NA11.0 D422

Sieve Size 1.5 inch - Percent Finer % Passing Total/NA1100 D422

Medium Sand % Total/NA13.4 D422

Sieve Size 1 inch - Percent Finer % Passing Total/NA1100 D422

Fine Sand % Total/NA172 D422

Sieve Size 0.75 inch - Percent Finer % Passing Total/NA1100 D422

Sieve Size 0.375 inch - Percent Finer % Passing Total/NA1100 D422

Silt % Total/NA116 D422

Clay % Total/NA15.4 D422

Sieve Size #4 - Percent Finer % Passing Total/NA198 D422

Sieve Size #10 - Percent Finer % Passing Total/NA197 D422

Sieve Size #20 - Percent Finer % Passing Total/NA197 D422

Sieve Size #40 - Percent Finer % Passing Total/NA194 D422

Sieve Size #60 - Percent Finer % Passing Total/NA183 D422

Sieve Size #80 - Percent Finer % Passing Total/NA169 D422

Sieve Size #100 - Percent Finer % Passing Total/NA152 D422

Sieve Size #200 - Percent Finer % Passing Total/NA121 D422

Hydrometer Reading 1 - Percent Finer % Passing Total/NA15.8 D422

Hydrometer Reading 2 - Percent Finer % Passing Total/NA15.4 D422

Hydrometer Reading 3 - Percent Finer % Passing Total/NA15.4 D422

Hydrometer Reading 4 - Percent Finer % Passing Total/NA15.4 D422

Hydrometer Reading 5 - Percent Finer % Passing Total/NA15.4 D422

Hydrometer Reading 6 - Percent Finer % Passing Total/NA14.9 D422

Hydrometer Reading 7 - Percent Finer % Passing Total/NA14.0 D422

Client Sample ID: W-1 Lab Sample ID: 200-51218-4

Total Organic Matter

PQL

MDLAnalyte Result Qualifier Unit Dil Fac D Method Prep Type Total/NA12.4 D2974

Gravel % Total/NA11.5 D422

Sieve Size 3 inch - Percent Finer % Passing Total/NA1100 D422

Sand % Total/NA187 D422

Eurofins TestAmerica, Burlington

This Detection Summary does not include radiochemical test results.

Page 5 of 32 11/5/2019

Project/Site: M10 Starkey, Pinellas County

Client Sample ID: W-1 (Continued) Lab Sample ID: 200-51218-4

Sieve Size 2 inch - Percent Finer

PQL

% Passing

MDLAnalyte Result Qualifier Unit Dil Fac D Method Prep Type Total/NA1100 D422

Coarse Sand % Total/NA10.60 D422

Sieve Size 1.5 inch - Percent Finer % Passing Total/NA1100 D422

Medium Sand % Total/NA14.5 D422

Sieve Size 1 inch - Percent Finer % Passing Total/NA1100 D422

Fine Sand % Total/NA182 D422

Sieve Size 0.75 inch - Percent Finer % Passing Total/NA1100 D422

Sieve Size 0.375 inch - Percent Finer % Passing Total/NA1100 D422

Silt % Total/NA13.5 D422

Clay % Total/NA17.7 D422

Sieve Size #4 - Percent Finer % Passing Total/NA199 D422

Sieve Size #10 - Percent Finer % Passing Total/NA198 D422

Sieve Size #20 - Percent Finer % Passing Total/NA197 D422

Sieve Size #40 - Percent Finer % Passing Total/NA193 D422

Sieve Size #60 - Percent Finer % Passing Total/NA183 D422

Sieve Size #80 - Percent Finer % Passing Total/NA168 D422

Sieve Size #100 - Percent Finer % Passing Total/NA148 D422

Sieve Size #200 - Percent Finer % Passing Total/NA111 D422

Hydrometer Reading 1 - Percent Finer % Passing Total/NA111 D422

Hydrometer Reading 2 - Percent Finer % Passing Total/NA19.6 D422

Hydrometer Reading 3 - Percent Finer % Passing Total/NA19.1 D422

Hydrometer Reading 4 - Percent Finer % Passing Total/NA18.6 D422

Hydrometer Reading 5 - Percent Finer % Passing Total/NA17.7 D422

Hydrometer Reading 6 - Percent Finer % Passing Total/NA16.7 D422

Hydrometer Reading 7 - Percent Finer % Passing Total/NA15.7 D422

Client Sample ID: W-2 Lab Sample ID: 200-51218-5

Total Organic Matter

PQL

MDLAnalyte Result Qualifier Unit Dil Fac D Method Prep Type Total/NA11.8 D2974

Gravel % Total/NA11.7 D422

Sieve Size 3 inch - Percent Finer % Passing Total/NA1100 D422

Sand % Total/NA180 D422

Sieve Size 2 inch - Percent Finer % Passing Total/NA1100 D422

Coarse Sand % Total/NA10.70 D422

Sieve Size 1.5 inch - Percent Finer % Passing Total/NA1100 D422

Medium Sand % Total/NA14.0 D422

Sieve Size 1 inch - Percent Finer % Passing Total/NA1100 D422

Fine Sand % Total/NA175 D422

Sieve Size 0.75 inch - Percent Finer % Passing Total/NA1100 D422

Sieve Size 0.375 inch - Percent Finer % Passing Total/NA199 D422

Silt % Total/NA112 D422

Clay % Total/NA16.3 D422

Sieve Size #4 - Percent Finer % Passing Total/NA198 D422

Sieve Size #10 - Percent Finer % Passing Total/NA198 D422

Sieve Size #20 - Percent Finer % Passing Total/NA197 D422

Sieve Size #40 - Percent Finer % Passing Total/NA194 D422

Sieve Size #60 - Percent Finer % Passing Total/NA183 D422

Sieve Size #80 - Percent Finer % Passing Total/NA168 D422

Sieve Size #100 - Percent Finer % Passing Total/NA152 D422

Sieve Size #200 - Percent Finer % Passing Total/NA119 D422

Eurofins TestAmerica, Burlington

This Detection Summary does not include radiochemical test results.

Page 6 of 32 11/5/2019

Project/Site: M10 Starkey, Pinellas County

Client Sample ID: W-2 (Continued) Lab Sample ID: 200-51218-5

Hydrometer Reading 1 - Percent Finer

PQL

% Passing

MDLAnalyte Result Qualifier Unit Dil Fac D Method Prep Type Total/NA18.1 D422

Hydrometer Reading 2 - Percent Finer % Passing Total/NA17.6 D422

Hydrometer Reading 3 - Percent Finer % Passing Total/NA17.2 D422

Hydrometer Reading 4 - Percent Finer % Passing Total/NA16.7 D422

Hydrometer Reading 5 - Percent Finer % Passing Total/NA16.3 D422

Hydrometer Reading 6 - Percent Finer % Passing Total/NA15.4 D422

Hydrometer Reading 7 - Percent Finer % Passing Total/NA14.5 D422

Eurofins TestAmerica, Burlington

This Detection Summary does not include radiochemical test results.

Page 7 of 32 11/5/2019

Case Narrative Client: Geosyntec Consultants, Inc. Job ID: 200-51218-1 Project/Site: M10 Starkey, Pinellas County

Job ID: 200-51218-1 Laboratory: Eurofins TestAmerica, Burlington

Narrative

Receipt The samples were received on 10/26/2019 11:10 AM; the samples arrived in good condition, properly preserved and, where required, on ice. The temperature of the cooler at receipt was 0.4º C.

Geotechnical No analytical or quality issues were noted, other than those described in the Definitions/Glossary page.

Eurofins TestAmerica, Burlington Page 8 of 32 11/5/2019

Definitions/Glossary

Project/Site: M10 Starkey, Pinellas County

Glossary These commonly used abbreviations may or may not be present in this report.

¤ Listed under the "D" column to designate that the result is reported on a dry weight basis

Abbreviation

%R Percent Recovery

CFL Contains Free Liquid

CNF Contains No Free Liquid

DER Duplicate Error Ratio (normalized absolute difference)

Dil Fac Dilution Factor

DL Detection Limit (DoD/DOE)

DL, RA, RE, IN Indicates a Dilution, Re-analysis, Re-extraction, or additional Initial metals/anion analysis of the sample

DLC Decision Level Concentration (Radiochemistry)

EDL Estimated Detection Limit (Dioxin)

LOD Limit of Detection (DoD/DOE)

LOQ Limit of Quantitation (DoD/DOE)

MDA Minimum Detectable Activity (Radiochemistry)

MDC Minimum Detectable Concentration (Radiochemistry)

MDL Method Detection Limit

ML Minimum Level (Dioxin)

NC Not Calculated

ND Not Detected at the reporting limit (or MDL or EDL if shown)

PQL Practical Quantitation Limit

QC Quality Control

RER Relative Error Ratio (Radiochemistry)

RL Reporting Limit or Requested Limit (Radiochemistry)

RPD Relative Percent Difference, a measure of the relative difference between two points

TEF Toxicity Equivalent Factor (Dioxin)

TEQ Toxicity Equivalent Quotient (Dioxin)

Eurofins TestAmerica, Burlington

Page 9 of 32 11/5/2019

Client Sample Results

Project/Site: M10 Starkey, Pinellas County

Lab Sample ID: 200-51218-1Client Sample ID: P-1 Matrix: SolidDate Collected: 10/25/19 08:30

Date Received: 10/28/19 12:49

Method: D2974 - Moisture, Ash and Organic Matter

PQL MDL

Total Organic Matter 0.72 % 10/29/19 17:58 1

Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier

Method: D422 - Grain Size

PQL MDL

Gravel 0.00 % 10/29/19 18:37 1

Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier

% Passing 10/29/19 18:37 1Sieve Size 3 inch - Percent Finer 100 % 10/29/19 18:37 1Sand 79 % Passing 10/29/19 18:37 1Sieve Size 2 inch - Percent Finer 100 % 10/29/19 18:37 1Coarse Sand 0.10 % Passing 10/29/19 18:37 1Sieve Size 1.5 inch - Percent Finer 100 % 10/29/19 18:37 1Medium Sand 3.0 % Passing 10/29/19 18:37 1Sieve Size 1 inch - Percent Finer 100 % 10/29/19 18:37 1Fine Sand 76 % Passing 10/29/19 18:37 1Sieve Size 0.75 inch - Percent

Finer

% Passing 10/29/19 18:37 1Sieve Size 0.375 inch - Percent Finer

% 10/29/19 18:37 1Silt 16 % 10/29/19 18:37 1Clay 4.6 % Passing 10/29/19 18:37 1Sieve Size #4 - Percent Finer 100 % Passing 10/29/19 18:37 1Sieve Size #10 - Percent Finer 100 % Passing 10/29/19 18:37 1Sieve Size #20 - Percent Finer 100 % Passing 10/29/19 18:37 1Sieve Size #40 - Percent Finer 97 % Passing 10/29/19 18:37 1Sieve Size #60 - Percent Finer 86 % Passing 10/29/19 18:37 1Sieve Size #80 - Percent Finer 70 % Passing 10/29/19 18:37 1Sieve Size #100 - Percent Finer 52 % Passing 10/29/19 18:37 1Sieve Size #200 - Percent Finer 21 % Passing 10/29/19 18:37 1Hydrometer Reading 1 - Percent

Finer 5.1

% Passing 10/29/19 18:37 1Hydrometer Reading 2 - Percent Finer

4.6

% Passing 10/29/19 18:37 1Hydrometer Reading 3 - Percent Finer

4.6

% Passing 10/29/19 18:37 1Hydrometer Reading 4 - Percent Finer

4.6

% Passing 10/29/19 18:37 1Hydrometer Reading 5 - Percent Finer

4.6

% Passing 10/29/19 18:37 1Hydrometer Reading 6 - Percent Finer

4.1

% Passing 10/29/19 18:37 1Hydrometer Reading 7 - Percent Finer

3.6

Eurofins TestAmerica, Burlington

Page 10 of 32 11/5/2019

Project/Site: M10 Starkey, Pinellas County

Lab Sample ID: 200-51218-2Client Sample ID: P-2 Matrix: SolidDate Collected: 10/25/19 09:20

Date Received: 10/28/19 12:49

Method: D2974 - Moisture, Ash and Organic Matter

PQL MDL

Total Organic Matter 0.66 % 10/29/19 17:58 1

Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier

Method: D422 - Grain Size

PQL MDL

Gravel 0.00 % 10/29/19 18:39 1

Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier

% Passing 10/29/19 18:39 1Sieve Size 3 inch - Percent Finer 100 % 10/29/19 18:39 1Sand 94 % Passing 10/29/19 18:39 1Sieve Size 2 inch - Percent Finer 100 % 10/29/19 18:39 1Coarse Sand 0.00 % Passing 10/29/19 18:39 1Sieve Size 1.5 inch - Percent Finer 100 % 10/29/19 18:39 1Medium Sand 3.2 % Passing 10/29/19 18:39 1Sieve Size 1 inch - Percent Finer 100 % 10/29/19 18:39 1Fine Sand 91 % Passing 10/29/19 18:39 1Sieve Size 0.75 inch - Percent

Finer

% Passing 10/29/19 18:39 1Sieve Size 0.375 inch - Percent Finer

% 10/29/19 18:39 1Silt 1.8 % 10/29/19 18:39 1Clay 4.5 % Passing 10/29/19 18:39 1Sieve Size #4 - Percent Finer 100 % Passing 10/29/19 18:39 1Sieve Size #10 - Percent Finer 100 % Passing 10/29/19 18:39 1Sieve Size #20 - Percent Finer 100 % Passing 10/29/19 18:39 1Sieve Size #40 - Percent Finer 97 % Passing 10/29/19 18:39 1Sieve Size #60 - Percent Finer 86 % Passing 10/29/19 18:39 1Sieve Size #80 - Percent Finer 71 % Passing 10/29/19 18:39 1Sieve Size #100 - Percent Finer 50 % Passing 10/29/19 18:39 1Sieve Size #200 - Percent Finer 6.3 % Passing 10/29/19 18:39 1Hydrometer Reading 1 - Percent

Finer 4.9

% Passing 10/29/19 18:39 1Hydrometer Reading 2 - Percent Finer

4.5

% Passing 10/29/19 18:39 1Hydrometer Reading 3 - Percent Finer

4.5

% Passing 10/29/19 18:39 1Hydrometer Reading 4 - Percent Finer

4.5

% Passing 10/29/19 18:39 1Hydrometer Reading 5 - Percent Finer

4.5

% Passing 10/29/19 18:39 1Hydrometer Reading 6 - Percent Finer

4.0

% Passing 10/29/19 18:39 1Hydrometer Reading 7 - Percent Finer

3.5

Eurofins TestAmerica, Burlington

Page 11 of 32 11/5/2019

Project/Site: M10 Starkey, Pinellas County

Lab Sample ID: 200-51218-3Client Sample ID: P-3 Matrix: SolidDate Collected: 10/25/19 10:00

Date Received: 10/28/19 12:49

Method: D2974 - Moisture, Ash and Organic Matter

PQL MDL

Total Organic Matter 0.69 % 10/29/19 17:58 1

Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier

Method: D422 - Grain Size

PQL MDL

Gravel 1.9 % 10/29/19 18:42 1

Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier

% Passing 10/29/19 18:42 1Sieve Size 3 inch - Percent Finer 100 % 10/29/19 18:42 1Sand 77 % Passing 10/29/19 18:42 1Sieve Size 2 inch - Percent Finer 100 % 10/29/19 18:42 1Coarse Sand 1.0 % Passing 10/29/19 18:42 1Sieve Size 1.5 inch - Percent Finer 100 % 10/29/19 18:42 1Medium Sand 3.4 % Passing 10/29/19 18:42 1Sieve Size 1 inch - Percent Finer 100 % 10/29/19 18:42 1Fine Sand 72 % Passing 10/29/19 18:42 1Sieve Size 0.75 inch - Percent

Finer

% Passing 10/29/19 18:42 1Sieve Size 0.375 inch - Percent Finer

% 10/29/19 18:42 1Silt 16 % 10/29/19 18:42 1Clay 5.4 % Passing 10/29/19 18:42 1Sieve Size #4 - Percent Finer 98 % Passing 10/29/19 18:42 1Sieve Size #10 - Percent Finer 97 % Passing 10/29/19 18:42 1Sieve Size #20 - Percent Finer 97 % Passing 10/29/19 18:42 1Sieve Size #40 - Percent Finer 94 % Passing 10/29/19 18:42 1Sieve Size #60 - Percent Finer 83 % Passing 10/29/19 18:42 1Sieve Size #80 - Percent Finer 69 % Passing 10/29/19 18:42 1Sieve Size #100 - Percent Finer 52 % Passing 10/29/19 18:42 1Sieve Size #200 - Percent Finer 21 % Passing 10/29/19 18:42 1Hydrometer Reading 1 - Percent

Finer 5.8

% Passing 10/29/19 18:42 1Hydrometer Reading 2 - Percent Finer

5.4

% Passing 10/29/19 18:42 1Hydrometer Reading 3 - Percent Finer

5.4

% Passing 10/29/19 18:42 1Hydrometer Reading 4 - Percent Finer

5.4

% Passing 10/29/19 18:42 1Hydrometer Reading 5 - Percent Finer

5.4

% Passing 10/29/19 18:42 1Hydrometer Reading 6 - Percent Finer

4.9

% Passing 10/29/19 18:42 1Hydrometer Reading 7 - Percent Finer

4.0

Eurofins TestAmerica, Burlington

Page 12 of 32 11/5/2019

Project/Site: M10 Starkey, Pinellas County

Lab Sample ID: 200-51218-4Client Sample ID: W-1 Matrix: SolidDate Collected: 10/25/19 11:10

Date Received: 10/28/19 12:49

Method: D2974 - Moisture, Ash and Organic Matter

PQL MDL

Total Organic Matter 2.4 % 10/29/19 17:58 1

Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier

Method: D422 - Grain Size

PQL MDL

Gravel 1.5 % 10/29/19 18:45 1

Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier

% Passing 10/29/19 18:45 1Sieve Size 3 inch - Percent Finer 100 % 10/29/19 18:45 1Sand 87 % Passing 10/29/19 18:45 1Sieve Size 2 inch - Percent Finer 100 % 10/29/19 18:45 1Coarse Sand 0.60 % Passing 10/29/19 18:45 1Sieve Size 1.5 inch - Percent Finer 100 % 10/29/19 18:45 1Medium Sand 4.5 % Passing 10/29/19 18:45 1Sieve Size 1 inch - Percent Finer 100 % 10/29/19 18:45 1Fine Sand 82 % Passing 10/29/19 18:45 1Sieve Size 0.75 inch - Percent

Finer

% Passing 10/29/19 18:45 1Sieve Size 0.375 inch - Percent Finer

% 10/29/19 18:45 1Silt 3.5 % 10/29/19 18:45 1Clay 7.7 % Passing 10/29/19 18:45 1Sieve Size #4 - Percent Finer 99 % Passing 10/29/19 18:45 1Sieve Size #10 - Percent Finer 98 % Passing 10/29/19 18:45 1Sieve Size #20 - Percent Finer 97 % Passing 10/29/19 18:45 1Sieve Size #40 - Percent Finer 93 % Passing 10/29/19 18:45 1Sieve Size #60 - Percent Finer 83 % Passing 10/29/19 18:45 1Sieve Size #80 - Percent Finer 68 % Passing 10/29/19 18:45 1Sieve Size #100 - Percent Finer 48 % Passing 10/29/19 18:45 1Sieve Size #200 - Percent Finer 11 % Passing 10/29/19 18:45 1Hydrometer Reading 1 - Percent

Finer

% Passing 10/29/19 18:45 1Hydrometer Reading 2 - Percent Finer

9.6

% Passing 10/29/19 18:45 1Hydrometer Reading 3 - Percent Finer

9.1

% Passing 10/29/19 18:45 1Hydrometer Reading 4 - Percent Finer

8.6

% Passing 10/29/19 18:45 1Hydrometer Reading 5 - Percent Finer

7.7

% Passing 10/29/19 18:45 1Hydrometer Reading 6 - Percent Finer

6.7

% Passing 10/29/19 18:45 1Hydrometer Reading 7 - Percent Finer

5.7

Eurofins TestAmerica, Burlington

Page 13 of 32 11/5/2019

Project/Site: M10 Starkey, Pinellas County

Lab Sample ID: 200-51218-5Client Sample ID: W-2 Matrix: SolidDate Collected: 10/25/19 11:25

Date Received: 10/28/19 12:49

Method: D2974 - Moisture, Ash and Organic Matter

PQL MDL

Total Organic Matter 1.8 % 10/29/19 17:58 1

Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier

Method: D422 - Grain Size

PQL MDL

Gravel 1.7 % 10/29/19 18:49 1

Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier

% Passing 10/29/19 18:49 1Sieve Size 3 inch - Percent Finer 100 % 10/29/19 18:49 1Sand 80 % Passing 10/29/19 18:49 1Sieve Size 2 inch - Percent Finer 100 % 10/29/19 18:49 1Coarse Sand 0.70 % Passing 10/29/19 18:49 1Sieve Size 1.5 inch - Percent Finer 100 % 10/29/19 18:49 1Medium Sand 4.0 % Passing 10/29/19 18:49 1Sieve Size 1 inch - Percent Finer 100 % 10/29/19 18:49 1Fine Sand 75 % Passing 10/29/19 18:49 1Sieve Size 0.75 inch - Percent

Finer

% Passing 10/29/19 18:49 1Sieve Size 0.375 inch - Percent Finer

% 10/29/19 18:49 1Silt 12 % 10/29/19 18:49 1Clay 6.3 % Passing 10/29/19 18:49 1Sieve Size #4 - Percent Finer 98 % Passing 10/29/19 18:49 1Sieve Size #10 - Percent Finer 98 % Passing 10/29/19 18:49 1Sieve Size #20 - Percent Finer 97 %…