Exhibit II Environmental Drill

DEPARTMENT OF TRANSPORTATION

STATE OF GEORGIA

GEOTECHNICAL ENGINEERING BUREAU

ENVIRONMENTAL DRILLING AND SAMPLING GUIDELINES

Phase II Environmental Site Assessment: Drilling, Sampling and Special Notes

A. Field Investigation

1. A field investigation should be performed at sites identified as potential UST or hazardous waste sites during the Phase I Environmental Site Assessment.

2. Property Owners should be notified and utilities located prior to beginning the field investigation by OMAT, the Prime Design Engineer or the Environmental Consultant.

3. For properties where the right-of-way is adjacent to a confirmed Recognized Environmental Condition (REC) site or adjacent to a potential REC site, but a release has not been documented in readily available environmental databases:

a Drilling should be conducted in the proposed right-of-way as follows:

• For right-of-way adjacent to a confirmed REC site, or a limited right-of-way acquisition of a confirmed REC with a No Further Action (NFA) from GA EPD, drill at a maximum spacing of 100’ between borings, with a minimum of three (3) borings.

• For right-of-way adjacent to a potential REC site, but a release has not been documented in readily available environmental databases,

• Right-of-way <500’, a maximum spacing of 100’ between borings, with a minimum of three (3) borings.

• 500’> right-of-way <1000’, a maximum spacing of 200’ between borings, with a minimum of four (4) borings.

• Right-of-way >1000’, a maximum spacing of 300’ between borings, with a minimum of five (5) borings.

b. Drilling should be conducted to a depth of 25 feet below ground surface or refusal on rock, whichever is less. If groundwater is encountered, groundwater samples should be collected and analyzed for environmental impacts. For soil and groundwater sampling see section A.5.

• Soil samples should be screened at 5 feet intervals to a depth of 25 feet if above static groundwater level and no auger refusal. All soil samples will be screened with a Photo-Ionization detector (PID), Flame-Ionization Detector (FID) or other GAEPD approved method.

• If impacts are visually detected or an odor is encountered, the soil sample should be collected and analyzed for environmental impacts.

• For REC’s and potential REC’s that are associated with gasoline and/or diesel sources, the soil sample with the highest PID/FID reading throughout the boring shall be collected and analyzed.

• In the case of suspected non-volatile contaminants, the soil sample exhibiting discoloration, deleterious composition (i.e. debris, slag, ash) or other visual indicators shall be collected and analyzed.

• For all other REC’s and potential REC’s sources such as Hazardous Waste Sites, soil samples should be collected at a depth of 5 feet and 25 feet or auger refusal, whichever is less. If visual contamination or high PID readings are observed between 5 and 25 feet, an additional soil sample should be collected.

c. Soil and groundwater sample analytical protocol should be as follows:

• For REC’s and potential REC’s that are associated with gasoline and/or diesel sources only; BTEX (benzene, toluene, ethyl-benzene and xylene) and PAH (Polynuclear Aromatic Hydrocarbons)

• For all other REC’s and potential REC’s sources; VOC (volatile organic compounds) and SVOC (semi-volatile organic compounds). Soil should also be tested for Total RCRA 13 Metals. Each site should be individually considered and tested for other constituents (Pesticides, Herbicides, PCBs, etc.) as necessary based on the findings from the Phase I Environmental Site Assessment report.

4. All sampling, written records and field notes shall be in general conformance with this guideline and US Environmental Protection Agency (EPA), Region IV, Soil and Groundwater Sampling Operating Procedures which can be found online at https://www.epa.gov/quality/quality-system-and-technical-procedures-sesd-field-branches#fsp

B. Visual Assessment and Notes

1. If UST systems are located on the right-of-way property, document the system location in a field log. If UST systems are thought to exist on site, but locations are unknown, document this in the field log.

2. The boring logs should document the screening results.

3. FHWA has expressed concerns for the location of possible releases and monitoring wells in relation to GDOT projects. Identify and reference the location of any monitoring wells.

https://www.epa.gov/quality/quality-system-and-technical-procedures-sesd-field-branches#fsp https://www.epa.gov/quality/quality-system-and-technical-procedures-sesd-field-branches#fsp