ADvTECH Environmental, Inc.
                                                        632 S. Azusa Avenue
                                                                                             West Covina, California  92821
STATEMENT OF
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  ENVIRONMENTAL SERVICES

ADvTECH ENVIRONMENTAL, INC. has extensive experience in conducting all aspects of environmental investigations, from initial surveys and site remediation to final negotiations with the regulatory agencies for site closure.  Our clients are offered a broad range of environmental consulting services that enables compliance with the requirements of CERCLA/SARA, RCRA, and other federal, state and local environmental programs.  ADvTECH  offers its clients the following services:

    »  Property Transfer Assessments (Phase I - III), Environmental Audits

      »  Site Hydrogeological Investigations

      »  Underground Storage Tank Management Programs

      »  RCRA/CERCLA/ RI/FS/Feasibility Studies

      »  Remedial Engineering Services, Facility Closure Programs

      »  Groundwater Modeling Assessment

     »  Solid Waste and Landfill Studies

      »  Wastewater Engineering and Groundwater Supply

      »  Stormwater Pollution Prevention Plans, NPDES

      »  Regulatory and Litigation Support

A brief description of each service follows.

Property Transfer Assessments, Environmental Audits

ADvTECH has been involved with numerous property transfer assessments under various state regulatory programs.  ADvTECH performs these assessments to the highest standards, meeting or exceeding the standards set forth by the American Standards Testing Materials (ASTM) for conducting property transfer assessments.  An environmental site assessment for a property transfer is an evaluation of potential liabilities associated with current and past practices which have taken place on or near the property.  The key elements of an assessment include research of site history, past operations and waste disposal practices, soil and ground-water conditions, and proximity of the site to surface or ground-water drinking water supplies and known sources of contamination.  Depending on the clients needs, a property transfer assessment can range from a one day activity to a much more detailed investigation of the site.

Site assessments are generally carried out in one or more distinct phases.  The initial phase (Phase 1) helps to identify areas of concern, where significant potential contamination may have occurred.  A more detailed assessment may be necessary to confirm or deny the presence or absence of contamination (Phase II).  If the results of such an investigation confirms the presence of contamination, a detailed site investigation (Phase III) would be recommended.

Site Hydrogeological Investigations

In order to select an appropriate remedy for an environmental problem, an understanding of the physical site conditions and the potential impact of the problem must be fully understood.  The first step in a hydrogeologic investigation of a site is the collection of soils, geologic, and ground-water resources information, test boring data, well logs, and water-quality data.  Data from such surveys would more than likely be combined with drilling and sampling to confirm the preliminary findings.  ADvTECH has the experience to develop solutions to the environmental problems acceptable to the appropriate regulatory agencies.  Typically, a work plan would be prepared to address the following types of issues:

    »  Data assessment and identification of sources of chemicals, both in the soil
       and ground water.

    »  Risk assessment of the impacts of chemicals on drinking supplies, human
       health, and the environment.

    »  Installation and maintenance of monitoring devices to assess ground-water
       quality, and recovery systems.

ADvTECH will assist our clients with the following stages of an investigation: Site Investigation Planning, Field Investigations, and Data Management and Interpretation.  

Underground Storage Tank Management Programs

ADvTECH has provided assistance in the installation and removal of underground storage tanks for both private and public sector clients.  Our staff engineers will prepare required plans and specifications for approval by the appropriate regulatory agency.  Projects performed have included single tank removal and investigation to complex multi-tank farm upgrades.  These projects demand a close alliance with various contractors to assist our clients in implementing a cost-effective program.

The success of our tank management program is a result of thoroughly understanding the clients current demand of any given fuel or chemical product, and projecting usage well into the future.  Our project team has work very closely with the regulatory agencies and local fire departments to assure the timely completion and compliance of such projects.

RCRA/CERCLA/ RI/FS/ Feasibility Studies

ADvTECH has provided environmental consulting services in response to CERCLA/SARA and RCRA regulations since the regulations became effective.  Our project team has gained experience in developing and managing the complex requirements of the Remedial Investigation/Feasibility Studies (RI/FS) and Remedial Design/Risk Assessment (RD/RA) processes at National Priority Listing (NPL) Sites and have conducted numerous RCRA facility investigation studies (RFI/RFA).

Our approach has been to delineate the cause and extent of the problem, and determine the appropriate and most economical remedial action that provides a lasting solution at minimum cost to the client.  ADvTECH breaks our projects into small controllable segments and uses a phased approach that creates greater control over scheduling, cost allocation among Potentially Responsible Parties (PRPs), and often reduces the long-term liabilities and complexity of the final site remedy.  This approach has been successfully applied to numerous RI/FS investigations, RFAs and RFIs, ground-water and surface water contamination assessments, and solid and hazardous waste facility siting, design and monitoring projects.

          Aspects involved in these studies include: 

      »  Developing and Negotiating Work Plans with State and Federal
      Environmental Agencies; 

      »  Conducting Hydrogeologic and Contamination Assessments for
      Soil and Ground Water; 

      »  Identifying, Evaluating and Developing Remedial Actions; 

      »  Providing Oversight of Remedial Investigations and Review of
      Work Plans Prepared by other PRPs.

 Remedial Engineering Services, and Facility Closure Programs

ADvTECH's multi-disciplinary staff, upon completion of the site characterization, can assess a broad range of remediation alternatives including facility closure and decontamination, soil removal, underground tank removal, ground-water treatment, soil venting, and bioremediation.

Typical cleanup activities provided/coordinated by ADvTECH include the design and installation of ground-water recovery, treatment and recharge systems; treatment of contaminated soil; design and installation of containment structures like slurry walls and hydraulic barriers.  Our experience in ground-water treatment systems ranges from small facilities such as gasoline stations with leaking underground storage tanks to large industrial complexes with contamination problems requiring large-scale aquifer restoration.  Our systems are designed to meet your site conditions.

The proper closure and decommissioning of facilities where hazardous materials and wastes have been in use or stored generally results in a secure environment.  Our closure plans are aimed at mitigating any past contamination problems and minimizing the risk of future releases, building in safeguards so that any potential releases are promptly detected and controlled.


Groundwater Modeling Assessment

Both saturated and unsaturated modeling tools have been applied at a variety of sites to assess the nature and extent of chemicals in the subsurface.  Planning and management of groundwater resources and the protection and cleanup of aquifers depend on the ability to quantify groundwater flow and contaminant transport.  Quantification can be conducted by field measurements and or mathematical modeling.  The models developed for groundwater are a series of equations that simulate and predict the physico-chemical responses of an aquifer subject to stresses such as pumping or injection or migration of chemicals in the subsurface.  

A variety of groundwater modeling codes have been developed to assess and evaluate conditions at the site, used in conjunction with initial development of a site conceptual model.  The available models today continue to be improved, allowing for more accurate predictions of both the past, present and future conditions of a site, particularly as it relates to the cleanup and restoration of the site.

 Solid Waste and Landfill Studies

A landfill is a complex facility requiring sophisticated monitoring, operation, and maintenance techniques.  The process of siting a new land disposal facility is an iterative process, from the geologic/hydrogeologic, environmental, geotechnical, and socio-economic impacts.  ADvTECH has supported land disposal facility applications by  conducting site evaluations, including on-site surface and subsurface investigations, alternative studies, regulatory and community meetings, and administrative hearings.  ADvTECH utilizes a fully-integrated, multi-disciplinary team to conduct these studies from the initial siting and feasibility studies, through permitting, closure and remediation.

ADvTECH is prepared to assist with the full permit document development, design, and construction management services associated with monitoring systems which address releases into the environmental media. 

Wastewater Engineering and Groundwater Supply 

ADvTECH has practical knowledge and experience in environmental and wastewater engineering, including design and installation of air strippers, activated carbon adsorbers, flare/catalytic incinerators, bioremediation systems, and venting systems for wastewater treatment and or groundwater/soil remediation.  Areas of research in environmental engineering include: chlorination of halogenated aromatics by ultrasound, fines/bacteria migration through porous media, biodegradability of bitumen, surface properties of composite mineral oxides, kinetics of activated carbon adsorption, wastewater filtration, UV disinfection, and design of flanged joints to meet the stringent fugitive emission requirements.

With regard to groundwater supply, staff members have completed comprehensive studies in various regions of California in evaluating alternatives to develop additional water supply from both surface and groundwater sources.  Elements of review included physiographic conditions of the study area, basin geology and hydrogeologic characteristics, aquifer and storage parameters, land-use and urbanization projections, water reclamation potential, conjunctive-use operations, water quality concerns, and legal and institutional aspects of water resources planning and management. 

Stormwater Pollution Prevention Plans, NPDES

The focus of the Stormwater Pollution Prevention Plan (SWPPP) is to characterize the water quality of discharges from storm sewers that drain residential, commercial and industrial sites and to provide mitigation of water quality impacts in order to comply with NPDES permit requirements.  Sediments and priority pollutants often found in urban runoff such as metals and organics, pesticides, halogenated aliphatic hydrocarbons, phenols, cresols, esters and hydrocarbons, etc. are tested for their concentrations and frequencies of occurrence.  Oil, grease and hydrocarbons, among others, are often important sources of pollution to receiving waters because of their non biodegradable nature.  These tend to accumulate in bottom sediments where they may persist for long periods of time and can adversely affect benthic organisms.

In California, the applicable Regional Water Quality Control Boards recommend the incorporation of appropriate Best Management Practices (BMPs) for mitigation of potential pollution of urban runoff as an integral part of the SWPPP.

ADvTECH can assist our clients in the preparation of SWPPPs.  One of the significant steps in the preparation of the SWPPP is to develop a program to monitor the performance of the BMPs, and evaluate whether additional BMPs are required.  The construction general permit requires that a monitoring, inspection, and maintenance plan with the following objectives be a component of the SWPPP to: 1) inspect BMPs annually, as well as prior to and after a storm event; 2) aid in implementation of the SWPPP; and 3) measure the effectiveness of the BMPs.

Regulatory and Litigation/Technical Support

Our technical team can assist our clients in determining the presence and magnitude of an environmental problem and regulatory impact.  Our systematic approach helps us develop cost-effective responses that meet government clean-up and safety requirements.  Our project team maintains extensive experience and a sophisticated working knowledge of environmental regulations on a local, state, and federal level.  This regulatory support assists our clients with effective negotiations and informed decision-making.

ADvTECH has provided litigation support for industrial clients in cases involving ground-water development, ground-water contamination of water supply, and waste disposal practices and its effect on human health and the environment.  The firm has extensive experience in assisting in the negotiation of consent agreements and administrative orders, assisting responsible parties at Superfund sites, completing site closure, and preparing Remedial Investigations/Feasibility Studies.  This technical litigation support is provided to the firm's clients in critical areas where the most proven, experienced, and talented support is needed.  Depending on the circumstances, a number of investigations have involved liaison with an array of regulatory agencies, completion of complex permitting requirements, or testimony before judicial committees.  Successful programs are a result of the depth of experience of the individuals involved and the ability to communicate that knowledge and experience to others.  The areas of support include: 

    Litigation Support - Expert Witness, Technical Planning and Trial Graphics. 

    Regulatory Negotiations - Local, State, Federal Compliance, Post-Closure and Closure Monitoring, and Cleanup Criteria for Contaminated Sites. 

    Environmental Management Consulting - Remedial Strategies, Technology Assessment, and Property Transfers.



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ADvTECH Environmental, Inc.
632 S. Azusa Avenue
West Covina, California  91791

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