**PERSONAL      and CONFIDENTIAL**

| ·   | This                offer is valid through June 5, 2006** **and                we must have your written acceptance by that date. Please sign the                enclosed copy of this letter. |
|--------------------|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

| **·  ** | Within                the next two (2) working days from receipt of this letter **call                800-760-8378, National Drug Screen, Inc**.                Tell them you are candidate for employment at PPL and are calling                to                schedule a pre-employment drug screen. They will schedule you and                provide                you with a location and time to go for the screening. If you experience                any problems in scheduling your drug screen call the PPL Dispensary,                484-634-4028. |
|------------------------|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

| ·   | On                the enclosed copy of this letter, write the date, time and name of                the                facility where you made arrangements for your drug screen. |
|--------------------|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

| ·   | Complete                the enclosed PPL Application Form. |
|--------------------|------------------------------------------------------------|

| ·   | Complete                the enclosed HR/Payroll Employment Information                Form. |
|--------------------|---------------------------------------------------------------------------------------------|

| **DATE                OF DRUG SCREEN** | **FACILITY                COMPLETING DRUG SCREEN** |
|----------------------------------------|----------------------------------------------------|
|                                   |                                               |

----

| **William                  H. Spence**                    |
|-----------------------------------------------------------|
| **PPL                  Offer**                            |
|                                                      |   |   |   |   |   |   |   |   |   |
| **Illustrative                  Compensation Term Sheet** |   |   |   |   |   |
|                                                      |   |   |   |   |   |   |   |   |   |
| **I.**                                                    |   | **Cash                  Compensation:** |   |   |   |   |   |   |   |
|                                                      |   |   |   |   |   |   |   |   |   |
|                                                      |   | Annual                  Base Salary: |   |   |   |   | $525,000 |   |   |
|                                                      |   | Annual                  Cash Incentive @ 75% Target*: |   |   | $393,750 |   |   |
|                                                      |   |   |   |   |   |   |   |   |
|                                                      |   | Annual                  Total Cash at Target: |   |   |   | $918,750 |   |   |
|                                                      |   |   |   |   |   |   |   |   |   |
| **II.**                                                   |   | **Annual                  Restricted Stock**                  @                  120%Target*: |   |   | $630,000 |   |   |
|                                                      |   | Grant                  (3-year restriction) Value |   |   |   |   |   |   |
|                                                      |   |   |   |   |   |   |   |   |   |
| **III.**                                                  |   | **Annual                  Stock Option Value**                  @                  120% Target*: |   |   | $630,000 |   |   |
|                                                      |   |   |   |   |   |   |   |   |   |
|                                                      |   | ***Annual                  Total Direct Compensation at Target:*** |   |   | **$2,178,750** |   |
|                                                      |   |   |   |   |   |   |   |   |   |
| **I****IV.**                                              |   | **Special                  Consideration Values:** |   |   |   |   |   |   |
|                                                      |   |   |   |   |   |   |   |   |   |
|                                                      |    | · Sign                  on: |   |   |   |   | $500,000 |   |   |
|                                                      |   | *$200,000                  in cash* |   |   |   |   |   |   |   |
|                                                      |   | *$300,000                  in restricted stock units (3-year restriction)* |   |   |   |   |   |
|                                                      |   |   |   |   |   |   |   |   |   |
|                                                      |    | · 2006                  Annual Cash                  Incentive: |   |   |   | $196,875 |   |   |
|                                                      |   | *Value                  of full-year award over pro-rata award;* |   |   |   |   |   |
|                                                      |   | *(assuming                  July 1 start date)* |   |   |   |   |   |   |
|                                                      |   |   |   |   |   |   |   |   |
|                                                      |    | · 2006                  Long-term                  Incentive: |   |   |   | $630,000 |   |   |
|                                                      |   | *Value                  of full-year award over pro-rata award;* |   |   |   |   |   |
|                                                      |   | *50%                  restricted stock units (3-year restriction)* |   |   |   |   |
|                                                      |   | *50%                  stock options* |   |   |   |   |
|                                                      |   | *(assuming                  July 1 start date)* |   |   |   |   |
|                                                      |   |   |   |   |   |   |   |   |
|                                                      |    |  · Additional                  service for purposes of                  determining PPL retirement benefits. |   |
|                                                      |   |   |   |   |   |   |   |   |
|                                                      |   | ***Offer                  Grand Total Value*** |   |   |   |   | **$3,505,625**** |   |
|                                                      |   |   |   |   |   |   |   |   |   |

| **V.** |         | **Other:**                                                                                                                                                                                                                                                                                                                                                                    |   |   |   |   |   |   |   |
|--------|--------------|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|--------|--------|--------|--------|--------|--------|--------|
|   |    | · Executive                  Financial                  Planning                                                                                                                                                                                                                                                                                                    |   |   |   |   |   |   |
|   |    | · Matching                  (100% on 3%)                  Savings/401(k) Plan                                                                                                                                                                                                                                                                                       |   |   |   |   |
|   |    | · Pension                  Plans - Qualified and                  Supplemental                                                                                                                                                                                                                                                                                      |   |   |   |   |   |
|   |    | · Six                  Weeks                  Vacation                                                                                                                                                                                                                                                                                                              |   |   |   |   |   |
|   |    | · Health/Dental/Life                  Coverage                                                                                                                                                                                                                                                                                                                      |   |   |   |   |   |
|   |    | · Company-paid                  Sickness,                  Short-term and Long-term Disability                                                                                                                                                                                                                                                                      |   |   |
|   |    | · Vision                  Care                                                                                                                                                                                                                                                                                                                                      |   |   |   |   |   |
|   |    | · Prescription                  Drug                  Coverage                                                                                                                                                                                                                                                                                                      |   |   |   |   |   |
|   |         | · Retiree                  Medical and Life                  Insurance                                                                                                                                                                                                                                                                                              |   |   |   |   |   |
|   |         |                                                                                                                                                                                                                                                                                                                                                                          |   |   |   |   |   |   |   |
| *      |         | This                  illustration is based on a full year of plan participation; partial                  year                  participation will be determined in accordance with the employment                  offer                  letter. Incentive awards for 2006 performance period are made in                  2007 are                  for 2006 performance. |
|   |         |                                                                                                                                                                                                                                                                                                                                                                          |   |   |   |   |   |   |   |
| ****** |         | Excluding                  the value of additional retirement service.                                                                                                                                                                                                                                                                                                        |   |   |   |   |   |