Dwayne Ziegler

Over the course of his environmental career, Mr. Ziegler has advanced from an environmental field technician, to staff geologist, project geologist and project manager. He brings his technical experience together with his business management skills to fulfill his current role as Manager of Operations.

In his current capacity, Mr. Ziegler is responsible for the technical proficiency of the field methods employed on projects and for the training and efficiency of the firms field personnel. He also coordinates field operations with the accounting department. His duties include logistics, operational support, quality control, resource allocation, and budget management. Mr. Ziegler coordinates the firms resources with Project Managers to complete projects on-time, on-budget and within regulatory requirements.

Mr. Ziegler has developed a positive relationship with government regulatory authorities and interacts with them on behalf of TRGs clients. Recently, he was a member of the California Underground Storage Tank Clean-Up Fund (USTCF) Task Force. The Task Force convened to recommend improvements to USTCF administrative procedures to help manage the current cash shortage of the USTCF. Mr. Ziegler remains an advisor to the USTCUF as it transitions to a new business model.

Human Health Risk Assessment (6425XIII)

Client:	SILVERCREEK PROPERTIES
Proj Mgr:	Dwayne Ziegler	Completed:	08/01/2005
Industry:	Real Estate Developers	Service:	Health Risk Assessments Brownfields/redevelopment Soil Remediation Regulatory Response & Negotiation
TRGs involvement in a major shopping center development saved the owner of the project potentially hundreds of thousands of dollars. Two environmental issues arose during the development of an orange orchard into a large retail shopping center in Corona. One was associated with the past use of the land as an orchard and the other was associated with electric transformers formerly located on the property. During grading activities, soil heavily stained by oil was encountered. TRG tested the soil and confirmed the substance was smudge pot oil based on the chemical make-up and the former land use. The burning of oil in smudge pots helped prevent frost from forming on the fruit in the orchard. There had been extensive remediation of smudge pot oil at the site prior to the recent purchase of the property. However, the newly discovered stained soil was outside of the boundaries of the area cleaned up in the past. The Santa Ana Regional Water Quality Control Board (SARWQCB) was the lead regulatory agency on the past and current smudge pot issues. While TRG was assessing the smudge pot oil, the construction activities at the site caught the attention of representatives of the County of Riverside, who later contacted the owner and informed him of a former electrical substation that used to be on the site. The substation transformers had exploded and the potential of PCB contamination was never properly investigated to the Countys satisfaction. TRG engaged the County and the SARWQCB on the substation issue as well. The SARWQCB conceded oversight of both issues to the County. TRG performed a Health Risk Analysis for both issues and was able to show that leaving the contamination in place would not pose an elevated health risk to the future occupants of the site. By using this approach, TRG obtained closure for the site and saved the project $100,000 of unforeseen costs.

Relocation of Food Production/Unwindiing of Tenant Lease (6924.IV)

Client:	FRESH START BAKERIES
Proj Mgr:	Dwayne Ziegler Ed Reynolds Jr.	Completed:	12/30/2007
Industry:	Manufacturers	Service:	Soil Remediation Site Assessment Regulatory Response & Negotiation Asbestos/ Lead/ Mold Consulting
One of the largest national suppliers of baked products to McDonalds Restaurants needed to assess and mitigate soil contaminated with petroleum hydrocarbons (hydraulic oil) inside of their leased Southern California production site. In addition, TRG was requested to provide asbestos related pre-demolition consulting advice. Approximately two years before its lease expired, Fresh Start Bakeries began the process of evaluating potential environmental impairment caused during its operation of an industrial bakery at the site. Fresh Start engaged The Reynolds Group because of our prudent approach to assessing and dealing with environmental liabilities. After performing a complete assessment, TRG quantified and budgeted the cost of remediation. To ensure there would be no issues with the landlord/property owner upon the expiration of it lease, Fresh Start Bakeries asked The Reynolds Group to proactively engage the regulatory agency, the County of Los Angeles Fire Department, to approve an expedited Remedial Action Plan. The Reynolds Group demolished the concrete floor and excavated approximately 400 tons of soil from the interior of the production building in confined conditions. Excavation was advanced until on-site laboratory analysis of the soils confirmed that levels of hydraulic oil met the cleanup levels pre-established by the Fire Department. In the end, Fresh Start Bakeries received a "No Further Action" letter with no restrictions on the sites future use. The Reynolds Group arranged for the safe transportation and disposal of the contaminated soils and restored the floor inside the building to its original condition. All of the work was completed under a tight timeline over a Thanksgiving Holiday. During decommissioning and demolition of the manufacturing equipment and tenant improvement, issues related to potential asbestos containing materials in building products and kilns arose. The Reynolds Group was engaged to assess the issues, provide solutions and engage and manage a contractor to abate the issues as required for Fresh Start Bakeries to move out of the premises with no residual liability.

Above Ground Storage Tank Installation (6902)

Client:	LOS ANGELES COMMUNITY COLLEGE DISTRICT
Proj Mgr:	Dwayne Ziegler	Completed:	12/30/2006
Industry:	School Districts/private Educators	Service:	Underground Storage Tank Removals
The Reynolds Group has successfully removed underground fuel storage tanks and/or installed above ground fuel storage tanks at a number of schools in the Los Angeles Community College District.

UST REMOVAL LOS ANGELES (7121.XII)

Client:	ALAD
Proj Mgr:	Dwayne Ziegler	Completed:	02/05/2007
Industry:	Non-profit Organizations	Service:	Underground Storage Tank Removals
The Reynolds Group was hired by the Association for Los Angeles Sheriffs (ALADS) in 2007 to resolve what appeared to be a rather complicated underground storage tank (UST) matter. During due diligence for the pending sale of the ALADS property, a UST was found under the city right of way immediately adjacent to the site. The UST held the potential to sour the deal. The previous consultant on the case encountered several setbacks and was estimating the project would cost about $200,000 to resolve over a long time frame. The UST lay beneath the public sidewalk with several telephone cables and high voltage electric lines running above it. The discovery of the tank placed tremendous pressure on the Executive Director of ALADS to obtain closure of the issue from the City of Los Angeles Fire Department . Abandoning the tank in place would have required a revocable permit and ALADS would have been liable for removing the UST at any point in the future if the City revoked the permit. Therefore, The Reynolds Group navigated through several city agencies to permit the project including the Los Angeles Fire Department, Bureau of Engineering, Street Lighting Division, Urban Forestry Division and the Department of Water and Power, in addition to the SBC and Verizon telecommunication companies. The removal of the UST involved the coordination of a dozen trades over two separate phases, the first of which was conducted while the project permit applications were in process. The Reynolds Group saved the client $120,000 and obtained a No Further Action letter (closure letter) after removing the UST.

Brownfield Spill Response & Closure (7063.XIV)

Client:	7TH STREET DEVELOPMENT
Proj Mgr:	Dwayne Ziegler	Completed:	01/11/2007
Industry:	Real Estate Managers/owners	Service:	Regulatory Response & Negotiation Brownfields/redevelopment
Following the release of a significant quantity of PCB containing oils from a former electrical switching building, TRG assisted the Brownfield property owner with spill cleanup, documentation and closure activities. TRG followed protocols specified in TSCA and 40 CFR 761 to decontaminate and wipe test the building from which the PCBs were released. In addition, TRG oversaw the excavation and disposal of PCB impacted soils and solid wastes. Timing was critical at this Brownfield site because the release occurred at an abandoned building slated for immediate demolition. Without an agency release from spill response obligations, the grading and building at the site would have stopped, causing costly delays in the redevelopment. To expedite cleanup and closure, TRG informed the oversight agency (Los Angeles County Fire Department Hazardous Materials Division) of the on-going cleanup progress and confirmation testing results. Once it was decontaminated to strict regulatory standards, TRG negotiated with the LACFD to obtain an expeditious release of the building, so that it could be demolished. Closure was granted within a week of TRGs report submittal.

Major Retail Center (6013.VI)

Client:	PACIFIC SOUTHWEST GROUP
Proj Mgr:	Dwayne Ziegler	Completed:	03/01/2002
Industry:	Drycleaners	Service:	Soil Remediation
Our clients property was impacted with PCE from a dry cleaning operation on site. The contamination was limited to the soil and did not impact groundwater. TRG negotiated cleanup standards with the Orange County Health Care Agency (OCHCA) and submitted a workplan to remove the contaminated soil from beneath the tenant space while the dry cleaner was in operation. TRG arranged to move the dry cleaning equipment, demolish a section of the concrete floor that measured 20 feet by 15 feet and excavate the soil to a depth of four to five feet. Once the soil was removed, backfilled the hole and repaired the floor. The dry cleaner remained in operation during the entire process. Closure was obtained from the OCHCA.

Benzene Air Exchange Rates (6626)

Client:	PACIFIC SOUTHWEST GROUP
Proj Mgr:	Dwayne Ziegler	Completed:	03/15/2005
Industry:	Real Estate Managers/owners	Service:	Vapor Intrusion Mitigation
While developing a site for a senior living facility, TRGs client encountered soil and groundwater impacted with gasoline. The contaminated groundwater was flowing from a gasoline station uphill from our clients construction site. Among the various issues presented by the migrating gasoline contamination was the concern of intrusion of benzene into the residences. Benzene is a component of gasoline and can off-gas from groundwater. In a vapor phase, benzene can then intrude into indoor environments. Several options were available to address the concern, but the most cost effective was to use the design of the proposed facility and not add to the cost of the project. The senior apartments were to be built over subterranean parking. Parking garages are required to have ventilation systems in place to mitigate carbon monoxide associated with vehicle exhaust. TRG was able to show that the ventilation system of the garage would adequately mitigate the residents exposure to benzene from the contaminated groundwater. This approach saved the project thousands of dollars in changes.

Environmental Consulting & Environmental Contracting