Pacific State Bancorp (PSBC) 10-Q 2010 Q2 Quarterly report

Exhibit 31.2CERTIFICATION

Under Section 302 of the Sarbanes-Oxley Act of 2002 Regarding Quarterly Report on Form 10-Q for the Quarter Ended March 30, 2010

I, Donald Kalkofen, Vice President, Director of Finance of Pacific State Bancorp certify that:

1. I have reviewed this quarterly report on Form 10-Q of Pacific State Bancorp;

1. In reliance upon the controls and procedures in place when I commenced employment on April 28, 2010, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;
2. In reliance upon the controls and procedures in place when I commenced employment on April 28, 2010, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the Company as of, and for, the periods presented in this report;
3. The Company’s prior financial officers and other certifying officer established the existing disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e)) for the Company and have:

(a)

Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the Company, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

(b)

Evaluated the effectiveness of the Company’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

(c)

Disclosed in this report any change in the Company’s internal control over financial reporting that occurred during the Company’s most recent fiscal quarter (the Company’s fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect the Company’s internal control over financial reporting; and

5. The Company’s other financial officers and other certifying officer disclosed, based on their most recent evaluation of internal control over financial reporting, to the Company’s auditors and the audit committee of the Company’s board of directors (or persons performing the equivalent functions):

(a)

All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the Company’s ability to record, process, summarize and report financial information; and

(b)

Any fraud, whether or not material, that involves management or other employees who have a significant role in the Company’s internal control over financial reporting.

Date: May 18, 2010 /s/ Donald A. Kalkofen Donald A. Kalkofen Vice President, Director of Finance (Principal Financial and Accounting Officer) Pacific State Bancorp