WORCESTER — While the state Department of Public Health continues to investigate "concerns about the use of pesticides" at a Worcester medical marijuana dispensary's cultivation operation in Bellingham, a company spokesman said Friday that the DPH has not identified any specific, immediate or serious threats to the public’s health, safety or welfare through its testing of the company’s products.

The spokesman for Good Chemistry of Massachusetts, Dominic Slowey of Slowey/McManus Communications, said the state DPH is exercising its authority to review any organic products used in the cultivation process which, in their view, has not been previously approved.

“We’ve gone through every process that the DPH has set up. We have indicated to them what we use at our growing process during the licensing process and we got licensed. We have gone through every hoop, in terms of getting our products on the shelf. So everything we put on our shelves has been approved by the labs that were set up to make sure that everything was safe,” Mr. Slowey said Friday. “And, now, last week, an inspector runs across the organic compounds that we are using in the grow facility (in Bellingham) and said, ‘Have we ever tested this before?’ And, so DPH takes the giant step of them shutting us down and saying, ‘You can’t sell any of your product.”

On Friday, Marybeth McCabe, a spokeswoman for the state DPH, said Good Chemistry of Massachusetts is still an ongoing investigation and DPH cannot provide any additional details on the matter.

According to a summary cease and desist and quarantine order issued Aug. 30, Good Chemistry of Massachusetts, located at 9 Harrison St. in Worcester and 20 Williams Way in Bellingham, was ordered to immediately cease and desist the sale and/or distribution of any marijuana and immediately quarantine and preserve within its facilities all marijuana. On Sept. 5, the state amended the cease-and-desist order to allow Good Chemistry to sell marijuana and marijuana-infused products from other registered dispensaries. All marijuana cultivated at the Bellingham location remains quarantined and preserved at Good Chemistry’s facilities.

The initial order was given after a DPH inspector determined marijuana cultivated and prepared by Good Chemistry in Bellingham could pose “an immediate or serious threat to the public’s health, safety or welfare,” citing possible violation of 105 CMR 725.105 (B)(1)(d), which provides that application of any pesticide not approved by the DPH in the cultivation of marijuana is prohibited.

Mr. Slowey said Good Chemistry is using organic compounds that are safe and have been approved by many federal and state departments. He also said he is not authorized to publicly release the name of the specific product(s) in question.

“They are organic. They have been approved by the (Environmental Protection Agency). They have been approved by the U.S. Department of Agriculture,” Mr. Slowey said. “And, I’m also pretty sure they have been approved by the Massachusetts Department of Agriculture for use in agricultural production in Massachusetts.”

The DPH said it has referred the matter to the state Department of Agricultural Resources, the state agency responsible for pesticide enforcement and regulation. A spokeswoman for the DAR said on Friday that it does not comment on ongoing investigations.

On July 12, Good Chemistry became the first medical marijuana dispensary in Worcester.

In addition, Ms. McCabe said DPH is looking into allegations that Good Chemistry of Massachusetts’ location in Worcester was charging sales tax on medical marijuana.

Massachusetts voters passed a ballot initiative in November 2016 legalizing adult use marijuana in the state. In general, a sale of medical marijuana to a purchaser is not subject to tax, as long as the purchaser presents his or her Medical Use of Marijuana Program ID Card and valid government-issued identification at the time of sale.

Mr. Slowey denied Good Chemistry has charged sales tax, and attributed the allegation to a misunderstanding.

"When we first opened we wanted to have the 1.5 percent community host fee we have to pay as part of our community host agreement with the city reflected on our receipts so our patients knew we had that obligation," he said in a statement. "It was causing confusion and frustration so we took it off the receipt, we just absorbed the fee and did not raise our prices."