VI.Reporting Results of Vulnerability Assessment

PHASE I

It is our intent to “phase” the assessment process in such a fashion as to meet the federal statutory time frame and provide an assessment that will be meaningful. “Phase I”, to be completed by the statutory deadline, will provide completed assessments that will allow the initiation of local source water protection plans and provide a priority ranking system for the refinement of the original assessments on a continuing basis. The final vulnerability assessment reports will be mailed to each water system, which should then notify their customers of the report’s availability. A notice of completion, the corresponding date of completion, and a brief summary of a system's Source Water Assessment is required by federal regulations to be included in the water system's next Consumer Confidence Report to its customers. Technical assistance and guidance will be provided to water systems as necessary to include this notice and other requirements of the CCR Rule.

REPORTING RESULTS

At the conclusion of “Phase I”, completed assessment reports will be sent to each applicable public water system. The reports will also be available over the Internet on the ADH/DOE SWP Home Page and provide copies upon individual request, as appropriate. A notice of the availability of the final vulnerability assessment may also be reported to customers, government agencies, and others via the Internet, and postings at public libraries.

A standardized format of reporting will be utilized to convey results to PWSs and consumers. The report will provide a summary indicating each source’s intrinsic susceptibility rating in order to give a general indication of the system’s overall susceptibility. The outline below depicts the general structural content of each report.

  1. Purpose for Conducting Assessments
  1. Providing Education and Information.
  2. Protection for the Future.
  1. How Assessments Were Conducted
  1. Who Conducted the Assessments.
  2. Where and How the Information was Obtained.
  1. Results of the Assessment
  1. Methodologies Used.
  2. Susceptibility Analysis.
  1. Map of Source and PSOC Locations.
  2. List of PSOCs by Health Risk Category and Zone within the Assessment Area. This will be demonstrated in a table format. (See example on page 6-2.)
  3. Example of Potential Types of Contamination that can be found at a Common PSOC (see example on page 6-2).
  1. How Assessment Results Can Be Used
  1. Education and Information for You and Your Customers.
  2. A Tool for Prioritization, Planning, and Preparation for the Future.
  3. Developing a Source Water Protection Plan.
  1. Other Assessment Information and How to Get It
  1. How to Obtain Additional Assessment Data.
  2. Who to Contact if You Need Help

VI.Example of Notice of Report Availability for Customer

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(Example)

TABLE OF SUSCEPTIBILITY FINDINGS

PHEASANTVILLE, ARKANSAS

Well #1

The table below lists the number of PSOCs relative to distance from Well #1 identified within the assessment area. The inherent risk posed by the PSOC is ranked by Health Risk Categories 1 through 10, (“1” representing the highest risk). The intrinsic sensitivity value for the geologic setting of the assessment area for Well #1 is ranked as a high susceptibility.

PSOCs appearing in the upper left corner pose the greatest risk to well #1. PSOCs appearing in the lower right corner pose the lowest risk.

Well #1-- Susceptibility based on PSOC location and Health Risk Category

PSOC
Health Risk Category /

Intrinsic Susceptibility Rating -- High

Zone 1

(0 – 440 feet from well) / Zone 2
(441 – 880 feet from well) / Zone 3
(881 – 1320 feet from well)
1 / (PSOCs entered here) / (PSOCs entered here) / (PSOCs entered here)
2
3
4
5
6
7
8
9
10

(Example)

POTENTIAL TYPES OF CONTAMINATION THAT CAN BE FOUND AT A COMMON PSOC

TYPE OF PSOC

/

Automobile - Body Shops / Repair Shops

/ / /

POSSIBLE CHEMICALS RELATED TO TYPE OF PSOC

/

Arsenic

Barium

Benzene

Copper
Creosote
Fluoride
Lead
Nickel
Tin /

Ammonium Persulfate

Cadmium

cis 1,2-Dichloroethylene

Chlorobenzene
Ethylene Glycol
Nitric Acid
Sulfuric Acid
Xylene (Mixed Isomers) /

trans 1,2-Dichloroethylene

1,4 Dichlorobenzene or P Dichlorobenzene

1,1,1-Trichloroethane or Methyl Chloroform

Dichloromethane or Methylene Chloride

Phosphoric Acid (Ortho )

1,1,2,2-Tetrachloroethane

Tetrachloroethylene or Perchlorethylene (Perk)

Trichloroethylene or TCE

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